JP2017020734A - Ventilation air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the following problem: a conventional air cleaning machine is not driven at a high speed until contaminated air reaches a sensor and its contamination condition is detected even when part of indoor air becomes contaminated, because the air contaminated condition is detected by the sensor set in the air cleaning machine and then the machine operates, and therefore, a prescribed period of time is required until the indoor air becomes clean after being contaminated, and there is a fear that a person in a room has uncomfortable feeling even in one period of time.SOLUTION: A ventilation air cleaning device includes a human body detection part, and controls a blast volume to be increased when a condition where the human body is not detected is shifted to a condition where the human body is detected in a condition where the blast volume is small.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a ventilation air cleaning device that is installed in a building and purifies the air in the building.

  It is equipped with a sensor that detects the degree of contamination in the indoor air.If the output of this sensor is greater than the specified value, select the ventilation mode that exhausts the indoor air to the outside. The indoor air circulation mode is selected to circulate the indoor air via, and the air flow is controlled according to the output of the sensor, thereby discharging polluted air and changing the indoor temperature due to continuous ventilation. There has been an air cleaner that suppresses power consumption and noise (see, for example, Patent Document 1).

JP-A-9-299742

  However, conventional air purifiers operate by detecting the air pollution status with a sensor installed in the air purifier, so even if the indoor air is partially contaminated, the contaminated air is not It will not operate at high speed until it reaches the sensor and a contamination situation is detected. For this reason, there is a problem that a certain amount of time is required until the room air is contaminated until the room air is contaminated, and the occupants may feel uncomfortable even for a period of time.

  The present invention has been made in order to solve the above-described problems.There is no trouble of daily manual operation, and the indoor air is discharged at high speed before the room is filled with contaminants such as dust. An object of the present invention is to provide a ventilation air cleaning device that is kept clean and suppresses uncomfortable feelings in the occupants and suppresses operating power and noise when the air is not contaminated.

  In order to solve the above-described problem, in the ventilation air cleaning device of the present invention, a suction port for sucking air from inside the building, a blow-out port for blowing air into the building, an exhaust port for discharging air outside the building, The duct connecting the suction port and the blowout port and connecting the suction port and the exhaust port, the air blower provided in the duct, and the connection between the suction port and the blowout port of the duct are cut off and the suction port and the exhaust port are disconnected. Connects the duct switching section that switches between the ventilation mode that connects to the internal air circulation mode that cuts off the connection between the suction port and the exhaust port of the duct and connects the suction port and the blowout port, and the suction port and the blowout port of the duct The air purification unit provided in the part, the human detection unit that detects the presence or absence of people in the building, the air pollution detection unit that detects the degree of air pollution in the building, and the entire device A control unit that controls the air volume of the air blowing unit according to the air pollution level detected by the air pollution level detection unit, and the air pollution level exceeds a predetermined value. The duct switching unit is controlled to enter the ventilation mode, and when the air pollution level does not exceed a predetermined value, the duct switching unit is controlled to enter the inside air circulation mode. When shifting from a state in which no person is detected to a state in which a person is detected, the amount of air blown by the blower is increased.

  According to the present invention, when the flow rate of the ventilation unit of the ventilation air cleaning device is small, when the person detection unit shifts from a state where no person is detected in the building to a state where a person is detected, the flow rate of the blower unit is reduced. Because it is controlled so that it increases, it suppresses before the air pollution degree detection part detects that dust etc. is generated by people entering the building and acting, and the air pollution degree in the building rises Can do.

  Also, if the air pollution level in the building exceeds the specified level, the duct switching unit is controlled to connect the suction port and the exhaust port, and the air in the building is discharged outside the building without going through the air cleaning unit. Therefore, when the air pollution level is high, the air purifying unit is not used, and the filter of the air purifying unit is prevented from being contaminated and the maintenance interval can be extended. On the other hand, when the air pollution level in the building is less than the specified level and the load on the air cleaning unit is small, the duct switching unit is controlled to connect the suction port and the blowout port and operate in the inside air circulation mode via the air cleaning unit Therefore, the loss of air-conditioning energy associated with ventilation can be suppressed, and in particular, the power used for cooling in summer and heating in winter can be suppressed to save energy.

It is a control block block diagram of the ventilation air cleaner which concerns on Embodiment 1 of this invention. It is a figure which shows the internal air circulation and the air cleaning operation state (inside air circulation mode) of the ventilation air purification apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the ventilation operation state (ventilation mode) of the ventilation air cleaner which concerns on Embodiment 1 of this invention. It is a flowchart which shows an example of control operation | movement of the ventilation air cleaner which concerns on Embodiment 1 of this invention. It is a figure which shows the time chart of the control action of the ventilation air cleaner which concerns on Embodiment 1 of this invention. It is a control block block diagram of the ventilation air cleaner which concerns on Embodiment 2 of this invention. It is a figure which shows arrangement | positioning in the building of the ventilation air purification apparatus which concerns on Embodiment 2 of this invention. In the ventilation air purifying apparatus which concerns on Embodiment 2 of this invention, it is a figure which shows the duct switching threshold value about the air pollution degree in the building which switches ventilation mode and inside air circulation mode. It is a control block block diagram of the ventilation air cleaner which concerns on Embodiment 3 of this invention. It is a figure which shows arrangement | positioning in the building of the ventilation air purification apparatus which concerns on Embodiment 3 of this invention. It is a flowchart which shows an example of control operation | movement of the ventilation air cleaner which concerns on Embodiment 3 of this invention. It is a figure which shows the relationship between the dust density in the building detected with the dust sensor provided in the building of the ventilation air cleaner which concerns on Embodiment 3 of this invention, and the ventilation volume of a ventilation part. It is a flowchart which shows an example of control operation | movement of the ventilation air cleaner which concerns on Embodiment 4 of this invention. It is a figure which shows the relationship between the dust density in a building of the ventilation air cleaner which concerns on Embodiment 4 of this invention, the presence or absence of the person in a building, and the ventilation volume of a ventilation part. It is a control block block diagram of the ventilation air cleaner which concerns on Embodiment 5 of this invention. It is a figure which shows arrangement | positioning in the building of the ventilation air purification apparatus which concerns on Embodiment 5 of this invention. It is a figure which shows an example of the relationship between the temperature difference inside and outside the building of the ventilation air cleaner which concerns on Embodiment 5 of this invention, and the threshold value which switches ventilation mode / inside air circulation mode. It is a flowchart which shows an example of the control operation which switches the ventilation mode and internal air circulation mode of the ventilation air cleaner which concerns on Embodiment 5 of this invention. It is a figure which shows an example of the relationship between the temperature information outside the building of the ventilation air cleaner which concerns on Embodiment 6 of this invention, and the threshold value which switches ventilation mode and inside air circulation mode. It is a flowchart which shows an example of the control operation which switches the ventilation mode and internal air circulation mode of the ventilation air cleaner which concerns on Embodiment 6 of this invention. It is a control block block diagram of the ventilation air cleaner which concerns on Embodiment 7 of this invention. It is a flowchart which shows an example of the control operation which switches the ventilation mode and internal air circulation mode of the ventilation air cleaner which concerns on Embodiment 7 of this invention. It is a figure which shows an example of the relationship between the season in the building of the ventilation air cleaner which concerns on Embodiment 7 of this invention, and the threshold value which switches ventilation mode / inside air circulation mode. It is a flowchart which shows an example of the control operation which switches the ventilation mode and internal air circulation mode of the ventilation air cleaner which concerns on Embodiment 8 of this invention. It is a figure which shows an example of the relationship between the season in the building of the ventilation air cleaner which concerns on Embodiment 8 of this invention, and the threshold value which switches ventilation mode / inside air circulation mode. It is a control block block diagram of the ventilation air cleaner which concerns on Embodiment 9 of this invention. It is a flowchart which shows an example of control operation | movement of the ventilation air cleaner which concerns on Embodiment 9 of this invention. It is a figure which shows the relationship between the activity amount of the person in the building of the ventilation air cleaner which concerns on Embodiment 9 of this invention, and the ventilation volume in a ventilation part. It is a control block block diagram of the ventilation air cleaner which concerns on Embodiment 10 of this invention. It is a figure which shows arrangement | positioning in the building of the ventilation air purification apparatus which concerns on Embodiment 10 of this invention. It is a flowchart which shows an example of control operation of the ventilation air cleaner which concerns on Embodiment 10 of this invention. It is a figure which shows the time chart of control operation | movement of the ventilation air cleaner which concerns on Embodiment 10 of this invention. It is a control block block diagram of the ventilation air cleaner which concerns on Embodiment 11 of this invention. It is a figure which shows arrangement | positioning in the building of the ventilation air purification apparatus which concerns on Embodiment 11 of this invention. It is a flowchart which shows an example of control action of the ventilation air cleaner which concerns on Embodiment 11 of this invention. It is a figure which shows the time chart of the control action of the ventilation air cleaner which concerns on Embodiment 11 of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the element which is common or it corresponds, and the overlapping description is abbreviate | omitted. Note that the present invention is not limited to the embodiments.

Embodiment 1
FIG. 1 is a diagram showing a control block configuration of a ventilation air cleaning apparatus according to Embodiment 1 of the present invention, and FIG. 2 is an inside air circulation / air cleaning operation state (inside air circulation) of the ventilation air cleaning apparatus according to this embodiment. FIG. 3 is a diagram showing a ventilation operation state (ventilation mode) of the ventilation air purifying apparatus according to the present embodiment. The ventilation air cleaning device 100 shown in the figure is provided on the ceiling of a building, etc., and a suction port 1 for sucking air from the space in the building, a blowout port 2 for blowing air into the space in the building, and exhausting air to the outside of the building The suction port 1, the blowout port 2, and the exhaust port 3 are connected by a duct 4. A filter 5a and a dust remover 5b, which are air purifiers 5 for removing dust from the air passing through the air outlet 2 of the duct 4, are provided, and a fan 6a is provided on the air inlet 1 side. The fan 6a is driven by a motor 6b to constitute a blower 6 that sends air from the suction port 1 to the blowout port 2 or the exhaust port 3. A damper 7 serving as a duct switching unit for switching the connection of the duct 4 is provided at a portion where the duct 4 a from the suction port 1, the duct 4 b from the blowout port 2, and the duct 4 c from the exhaust port 3 are connected. In addition, an air pollution degree sensor 8 and a human sensor (human body detection sensor) 9 as a human detection unit are provided on the ceiling surface of the building where the ventilation air cleaning device 100 is installed. Detect the presence or absence. The control unit 10 includes a timer 11 that measures time, and controls the motor 6 b of the blower unit 6 and the damper 7 that is a duct switching unit based on information detected by the air pollution degree sensor 8 and the human sensor 9.

  When the position of the damper 7 is controlled so that the air in the building sucked from the suction port 1 is returned to the building through the air purifying unit 5 from the blowout port 2, the inside air circulation shown in FIG.・ Air purifying operation status. In the inside air circulation / air cleaning operation state, as shown in FIG. 2, the air sucked from the suction port 1 by the rotation of the fan 6 a of the blower 6 and flowing through the duct 4 a is blocked by the damper 7 and connected to the outlet port 2. It flows into the duct 4b and is returned from the outlet 2 into the building via the air purifier 5 formed by the filter 5a and the dust remover 5b.

  Further, when the position of the damper 7 is controlled to enter the ventilation mode in which the air sucked from the suction port 1 is discharged from the exhaust port 3 to the outside of the building, the ventilation operation state shown in FIG. In the ventilation operation state, as shown in FIG. 3, the air sucked from the suction port 1 by the rotation of the fan 6 a of the blower 6 and flowing through the duct 4 a flows into the duct c without being blocked by the damper 7, and is discharged from the discharge port 3. From the building. The duct 4b connected to the air outlet 2 is blocked by the damper 7, and the air from the duct 4a does not flow.

  Next, the operation of the ventilation air cleaning apparatus 100 will be described based on the flowchart of the control operation by the control unit 10 shown in FIG. 4 and the time chart shown in FIG. Note that the flowchart and time chart of the control operation shown in FIG. 5 are merely examples, and the scope of the invention is not limited to the contents shown in the figure. In the time chart of FIG. 5, (a) shows the output of the human sensor 9 that detects the presence of a person in the building, and (b) shows the operation of the air blowing unit 6 indicating the operation level of the ventilation air purifier. (C) shows the level of air pollution in the building detected by the air pollution sensor 8, and (d) shows the position of the damper 7 as a duct switching part. It is.

  In FIG. 4, it is assumed that the ventilation air cleaning apparatus 100 is in a stopped state in an initial state, and that there is no person in the building. First, the control unit 10 determines the presence or absence of a person in the building based on information from the human sensor 9 (step 1). If there are no people, just wait. When the presence of a person is detected, the motor 6b of the blower 6 is driven at a high output to increase the rotational speed of the fan 6a and increase the amount of blown air (step 2, FIG. 5: [a] and [c]). . Next, the air pollution level in the building is detected by a miscellaneous gas sensor, which is the air pollution level sensor 8, and is compared with a predetermined duct switching threshold, so that the pollution level is improved by ventilation outside the building. It is also determined whether the air in the building is at a level to be improved by passing through the filter 5a or the dust remover 5b, which is the air purifying unit 5 (step 3). As a result, when the degree of air pollution in the building is larger than the duct switching threshold, the damper 7 is controlled to be in the ventilation position (state in FIG. 3), and the air in the building sucked from the suction port 1 is sent from the discharge port 3 to the building. It discharges outside and ventilates (step 4, FIG. 5: [d]). If the air pollution level in the building is less than or equal to the duct switching threshold, the damper 7 is set to the inside air circulation position (the state shown in FIG. 2), and the air in the building sucked from the suction port 1 is filtered or removed. It passes through the machine 5b and returns to the building from the outlet 2 (step 5, FIG. 5: [e]). Thus, the position of the damper 7 is switched to select the ventilation operation state or the inside air circulation / air cleaning operation state, thereby improving the air pollution level in the building. When the air pollution level in the building is high, the filter 5a and the dust remover 5b constituting the air purifying unit 5 are prevented from being contaminated by directly discharging the air out of the building without passing through the air purifying unit 5, and the maintenance interval is increased. Can be prolonged. In addition, when the air pollution level in the building is below a predetermined level and the load on the air cleaning unit 5 is small, the damper 7 serving as the duct switching unit is controlled to connect the suction port 1 and the outlet port 2 to connect the air cleaning unit. Therefore, it is possible to save energy by suppressing an increase in air-conditioning energy loss due to ventilation.

  Next, the presence / absence of a person in the building is determined again (step 6). If there is a person in the building, it is determined whether the timer 11 is counting (step 7). The timer 11 is in a count stop state in the initial state, and starts counting when no person is detected after determining that there is a person in the building. If the timer 11 is not counting in step 7, the person continues to be detected in the building. In that case, the process returns to step 3 to continue monitoring the air pollution level in the building. If the timer 11 is counting in step 7, the presence sensor 9 detects again that there is a person in the building after the presence sensor 9 does not detect the presence of a person in the building. After stopping the count of the timer 11 (step 8), the process returns to step 2 to increase the air volume of the air blower 6 and continue monitoring the air pollution level in the building.

  If no person in the building is detected by the human sensor 9 in step 6, it is determined whether or not the timer 11 is counting (step 9). When the timer 11 is not counting, it is a case where the human sensor 9 has changed from a state in which a person in the building is detected to a state in which the person is not detected, and the timer 11 count is cleared (step 10). Is started (step 11), the drive of the motor 6b of the blower 6 is driven to a low output, the rotational speed of the fan 6a is lowered, the amount of blown air is reduced (step 12, FIG. 5: [b]), and the process goes to step 3. Return.

  If the timer 11 is counting in step 9, it is a case where a person in the building has not already been detected by the human sensor 9, and the timer 11 is counted up and the human sensor 9 The duration of the state in which no person is detected is updated (step 13), and it is determined whether or not the value of the timer 11 is equal to or greater than the predetermined value A (step 14). When the value is equal to or greater than the predetermined value A, it is a case where the presence of a person in the building is not continuously detected by the human sensor 9 for a predetermined time or more. The motor 5b is stopped, the rotation of the fan 5a is stopped, the ventilation of the ventilation air cleaning device 100 is stopped (step 15), and the process returns to step 1. If the counter value of the timer 11 is less than the predetermined value A in step 14, it is determined that it is not yet confirmed that there are no people in the building, and the process returns to step 3 to continue monitoring the air pollution level in the building. To do.

  According to the present embodiment, when the human sensor 9 detects a person in the building, the ventilation air cleaning device 100 is kept in a large air volume before the air pollution level detected by the air pollution level sensor 8 provided in the building increases. Since it operates, it can suppress that the CO2 density | concentration rises by the activity of the person in a building, or dust rises, and the air pollution degree in a building raises. In addition, if the human sensor 9 no longer detects a person in the building, the ventilation air cleaning device is set to a small air volume, and if the state in which no person is detected in the building is continued for a predetermined time, the ventilation air cleaning device stops blowing. The air pollution degree can be improved in preparation for a case where a person enters the building again while suppressing unnecessary power consumption.

Embodiment 2. FIG.
The ventilation air cleaning apparatus 100 according to the first embodiment includes the air pollution degree sensor 8 that detects the air pollution degree only in the building, but also detects the air pollution degree outside the building, and the ventilation operation state ( It is good also as setting the duct switching threshold value about the air pollution degree in the building which switches between ventilation mode) and an inside air circulation / air-cleaning operation state (inside air circulation mode) based on the air pollution degree outside a building. FIG. 6 shows a control block configuration of the ventilation air cleaning apparatus 100 according to the second embodiment, FIG. 7 shows an arrangement of the ventilation air cleaning apparatus 100 according to the present embodiment in a building, and FIG. 7 shows a ventilation air cleaning apparatus according to the present embodiment. FIG. 8 shows the duct switching threshold for the air pollution level in the building where the ventilation mode and the inside air circulation mode of the apparatus 100 are switched.

  In the ventilation air cleaning apparatus 100 according to the present embodiment, as shown in FIGS. 6 and 7, in addition to the air pollution degree sensor 8a in the building for detecting the air pollution degree in the building, the pollution degree of the air outside the building. The outside-building air pollution degree sensor 8b is detected. Also in the ventilation air cleaning apparatus 100 according to the present embodiment, the control unit 10 operates with a large air volume when the presence sensor 9 detects that there is a person in the building, and reduces the air volume when there is no person in the building. Or stop blowing. The ventilation mode and the inside air circulation mode are selected by selecting a duct switching threshold determined based on the air pollution level detected by the air pollution level sensor 8b outside the building and an air pollution level inside the building detected by the air pollution level sensor 8a inside the building. In comparison, when the degree of air pollution in the building is greater than the duct switching threshold, the ventilation mode in which the air in the building sucked in from the suction port 1 is discharged from the exhaust port 3 to the outside of the building is set. When the degree of air pollution in the building is less than the duct switching threshold, the inside air circulation mode in which the air in the building sucked in from the suction port 1 is passed through the filter 5a and the dust remover 5b and returned from the blowing port 2 to the building. And The duct switching threshold is set to a level higher than the air pollution level outside the building detected by the outside air pollution level sensor 8b. For example, as shown in FIG. 8, the level may be a certain amount higher than the detected air pollution level outside the building, but is not limited thereto, and may be a level higher than the air pollution level outside the building. In addition, the air pollution degree information outside the building is not limited to information obtained by the outside air pollution degree sensor 8b, but may be obtained by collecting data available to the public through a telecommunication circuit.

  According to the ventilation air cleaning apparatus 100 according to the present embodiment, the duct switching threshold is set based on the outside air pollution degree detected by the outside air pollution degree sensor 8b, and the threshold and the air pollution degree inside the building are set. The air pollution degree in the building detected by the sensor 8a is compared. Since the duct switching threshold is detected based on the degree of air pollution outside the building, air pollution such as pollen scattering and PM2.5 is included in the air outside the building. Since the air pollution level in the building is lower than the air pollution level outside the building, the ventilation mode is not set, and the air pollution level in the building can be appropriately improved.

  Moreover, even if it is the ventilation air cleaning apparatus 100 which concerns on this Embodiment, if the air pollution degree in a building is more than a duct switching threshold value, the air purifying part 5 which comprises the air in a building with the filter 5a and the dust remover 5b. Since the exhaust air is discharged from the exhaust port 3 without going through the building, the filter 5a and the dust remover 5b can be prevented from being contaminated and the maintenance interval can be extended. And when the air pollution degree in a building is less than a duct switching threshold value, the air in the building taken in from the suction inlet 1 is returned into the building from the blower outlet 2 via the air purifying part 5. In this case, since the degree of air pollution in the building is not so high, the load on the air cleaning unit is light, the dirt of the filter 5a and the dust remover 5b does not progress significantly, and the degree of air pollution in the building is also reliably improved. be able to. Furthermore, when the temperature difference between the inside and outside of the building is large, an increase in the air conditioning load can be suppressed.

Embodiment 3 FIG.
FIG. 9 shows a control block configuration of the ventilation air cleaning apparatus 100 according to Embodiment 3, and FIG. 10 shows an arrangement in a building. The ventilation air cleaning apparatus 100 according to the present embodiment includes two types of sensors, that is, a CO2 sensor 8c and a dust sensor 8d as air pollution degree sensors. In addition, although the data type of the air pollution degree which the ventilation air cleaning apparatus 100 which concerns on this Embodiment detects was made into 2 types, it may be 3 or more types. By controlling the position of the damper 7 according to one or more types of air pollution data, switching the duct 4 to be ventilated and selecting the ventilation mode and the inside air circulation mode, the type different from the air pollution level data used for the duct switching It is good also as adjusting the ventilation volume of the ventilation part 6 of the ventilation air cleaning apparatus 100 using the data of air pollution degree of.

  FIG. 11 is a flowchart showing an example of the control operation of the ventilation air cleaning apparatus 100 according to the present embodiment, and FIG. 12 is a dust sensor 8d provided in the building of the ventilation air cleaning apparatus 100 according to the present embodiment. It is a figure which shows the relationship between the dust density in the building detected by (3), and the ventilation volume of the ventilation part 6. FIG. Hereinafter, the operation of the ventilation air cleaning apparatus 100 according to the present embodiment will be described based on the drawings.

  In FIG. 11, the ventilation air cleaning device 100 is in a stopped state in the initial state, and the control unit 10 determines the presence or absence of a person in the building based on information from the human sensor 9 (step 21). If there are no people, just wait. When the presence of a person is detected, the count of the timer 11 is cleared (step 22) and initialized, and then the count is started (step 23). And the motor 6b of the ventilation part 6 is driven by high output, the rotation speed of the fan 6a is enlarged, and ventilation volume is enlarged (step 24). Next, the CO2 concentration in the building is detected by the CO2 sensor 8c and compared with a predetermined duct switching threshold (step 25). If the detected CO2 concentration is less than the duct switching threshold, the damper 7 is controlled to circulate the inside air. Is set to the inside air circulation mode (step 26). On the other hand, if the CO2 concentration exceeds the duct switching threshold, the damper 7 is controlled to enter the ventilation mode (step 27).

  Next, it is determined whether or not the counter value of the timer 11 exceeds a predetermined value B (step 28), and it is determined whether or not a predetermined time has elapsed since a person was detected in the building. If the predetermined value B is not exceeded, the timer 11 is counted up (step 29). When the timer 11 exceeds the predetermined value B, the ventilation air cleaning device 100 is operated with a large air volume for a predetermined time after detecting a person in the building, and the air pollution level is prevented from rising. Therefore, air pollution generated in the building can be detected by the dust sensor 8d or the like without a large time delay. Therefore, the air flow rate of the air blowing unit 6 of the ventilation air cleaning device 100 is set based on the dust concentration detected by the dust sensor 8d. The relationship between the dust concentration and the blowing rate is shown in FIG. The dust concentration is compared with the first threshold value DS1 (step 30). If the dust concentration is higher than the first threshold value DS1, the air flow rate is increased (V1) (step 31), and the dust concentration is the first threshold value. If lower than DS1, it is compared with a second threshold value DS2 lower than the first threshold value DS1 (step 32). If the dust concentration is higher than the second threshold value DS2, the air flow rate is set to medium (V2) (step 2). 33) When the dust concentration is lower than the second threshold value DS2, it is compared with the third threshold value DS3 lower than the second threshold value DS2 (step 34). When the dust concentration is lower than the second threshold value DS2 and higher than the third threshold value DS3 Sets the air flow rate to a small value (V3) (step 35), and if it is lower than the third threshold, sets the air flow rate to a minute value (V4) (step 36). In addition, about the kind of air pollution degree which sets ventilation volume, it is good also as determining ventilation volume not only with said dust density | concentration but with the value etc. which considered both dust density | concentration and CO2 density | concentration.

  Next, it is determined whether or not a person in the building is detected by the human sensor 9 (step 37). If a person is detected, the process returns to step 25 to continue monitoring the CO2 concentration of the air in the building. On the other hand, if no person is detected, the blower 5 is controlled to stop the blowing (step 38), and the process returns to step 21 to wait for a person to be detected in the building.

  In the ventilating air cleaning apparatus 100 according to the present embodiment, as described above, when a person is detected in the building, the air blowing amount of the air blowing unit 6 of the ventilating air cleaning apparatus 100 is increased for a certain period. Therefore, it is possible to suppress the increase in the air pollution level in the building due to people entering the building, and to suppress the delay in detection of the increase in the air pollution level in the building by flowing the air in the building. it can. In addition, after a certain period of time has passed after a person has been detected in the building and the air blowing amount of the air blowing unit 6 of the ventilation air cleaning device 100 has been increased, the state of air pollution due to the person being in the building is the CO2 sensor 8c. Since it can be detected by the dust sensor 8d, the amount of electric power used can be suppressed and the noise caused by the blowing can be reduced by controlling the blowing amount according to the detected state. In addition, the air pollution level in the building is detected by dividing it into multiple types, and the ventilation mode and the inside air circulation mode are switched based on the type of air pollution that is improved by ventilation such as CO2 concentration. Since the air flow rate of the ventilation air cleaning device 100 is controlled in multiple stages in consideration of a different type of air pollution from that of switching the air, the indoor air cleaning state can be effectively and efficiently improved. it can.

Embodiment 4 FIG.
In the ventilation air cleaning apparatus 100 according to the third embodiment, as shown in the flowchart of the control operation in FIG. 11, when there is no person in the building, the ventilation is stopped, but there is no person in the building. Alternatively, the air blowing may be continued to improve the degree of air pollution in the building. FIG. 13 is a flowchart showing the control operation of the control unit 10 of the ventilation air cleaning apparatus 100 according to the fourth embodiment. FIG. 14 shows the dust concentration and ventilation in the building of the ventilation air cleaning apparatus 100 according to the present embodiment. It is a figure shown in the relationship with the ventilation volume of the ventilation part 6 of the air purifying apparatus 100. FIG. Hereinafter, based on FIG.13 and FIG.14, operation | movement of the ventilation air cleaning apparatus 100 which concerns on this Embodiment is demonstrated. In the ventilating air cleaning apparatus 100 according to the present embodiment, as shown in FIG. 14, not only the dust concentration detected by the dust sensor 8d but also the amount of air blown by the air blowing section 6 of the ventilating air cleaning apparatus 100 is within the building. It is adjusted according to the presence or absence of people.

  In the flowchart of FIG. 13, the control operation up to step 29 is the same as that of the ventilation air cleaning apparatus according to the third embodiment, and the description thereof is omitted. In step 28, when the counter value of the timer 11 exceeds the predetermined value B, the air blowing unit 6 of the ventilation air cleaning device 100 is continuously operated for a predetermined time or more, and the degree of air pollution increases. While suppressing the air in the building, the air pollution generated in the building can be detected by the dust sensor 8d or the like without a large time delay. Therefore, first, it is determined whether or not there is a person in the building by the human sensor 9 (step 39). If there is a person in the building, the dust concentration detected by the dust sensor 8d and the first threshold value DS1 are determined. In comparison (step 40), if the dust concentration is higher than the first threshold value DS1, the air flow rate is set to Va1 (step 41). If the dust concentration is lower than the first threshold value DS1 in step 40, it is compared with the second threshold value DS2 lower than the first threshold value DS1 (step 42). If the dust concentration is higher than the second threshold value DS2, The amount of blown air is Va2 (step 43). When the dust concentration is lower than the second threshold value DS2 in step 42, the dust concentration is compared with the third threshold value DS3 lower than the second threshold value DS2 (step 44), and the dust concentration is higher than the third threshold value DS3. In this case, the air flow rate is set to Va3 (step 45). If the dust concentration is lower than the third threshold value DS3 in step 44, the dust concentration is compared with the fourth threshold value DS4 lower than the third threshold value DS3 (step 46), and the dust concentration is higher than the fourth threshold value DS4. In this case, the air flow rate is set to Va4 (step 47). If the dust concentration is lower than the fourth threshold value DS4 in step 46, the air flow rate is set to Va5 (step 48).

  Even when it is determined in step 39 that there is no person in the building, the dust concentration detected by the dust sensor 8d is compared with the first threshold value DS1 (step 49), and the dust concentration is more than the first threshold value DS1. If it is high, the air flow rate is set to Vb1 (step 50). When the dust concentration is lower than the first threshold value DS1 in step 49, the dust concentration is compared with the second threshold value DS2 lower than the first threshold value DS1 (step 51), and the dust concentration is higher than the second threshold value DS2. If it is high, the air flow rate is set to Vb2 (step 52). If the dust concentration is lower than the second threshold value DS2 in step 51, the dust concentration is compared with the third threshold value DS3 lower than the second threshold value DS2 (step 53), and the dust concentration is higher than the third threshold value DS3. In this case, the air flow rate is set to Vb3 (step 54). If the dust concentration is lower than the third threshold value DS3 in step 53, the fourth threshold value DS4 lower than the third threshold value DS3 is compared with the dust concentration (step 55), and the dust concentration is higher than the fourth threshold value DS4. In this case, the air flow rate is set to Vb4 (step 56). If the dust concentration is lower than the fourth threshold value in step 55, the blowing is stopped (step 57), and the process returns to step 21 to wait for a person to be detected in the building. If the blowing is not stopped, the process returns to step 25 to continue the control performed by detecting the CO2 concentration and dust concentration of the air in the building and the presence or absence of people in the building.

  According to the ventilation air cleaning apparatus 100 according to the present embodiment, when a person is detected in the building from a state where no person is detected in the building and the air blowing unit 6 of the ventilation air cleaning apparatus 100 is not operating, a certain period of time is detected. Since the ventilation air cleaning apparatus 100 is operated with a large air volume, it is possible to suppress an increase in the air pollution level in the building and to suppress a delay in detection of an increase in the air pollution level. In addition, even if there is a transition from a person in the building to a state in which there is no person in the building, the ventilation air cleaner is operated with a small air volume until the air in the building becomes clean, so power consumption is reduced. However, when a person enters the building again, the air in the building can be cleaned.

Embodiment 5. FIG.
FIG. 15 shows the control block configuration of the ventilation air cleaning apparatus 100 according to the fifth embodiment, FIG. 16 shows the arrangement in the building, FIG. 17 shows an example of the relationship between the temperature difference inside and outside the building and the duct switching threshold, and FIG. FIG. 18 shows a flowchart of the control operation for switching between the inside air circulation mode. The ventilation air cleaning apparatus according to the present embodiment includes a building temperature sensor 12a that detects the temperature of air in the building (hereinafter referred to as air temperature), and an outside temperature sensor 12b that detects the temperature outside the building, Depending on the detected temperature inside the building and outside the building, the ventilation mode for discharging the air inside the building to the outside of the building and the inside air circulation mode for returning the air inside the building through the dust remover and deodorizing filter to the inside of the building are switched. The duct switching threshold is adjusted. In FIG. 16, the temperature sensor 12a in the building is shown on the ceiling surface on which the ventilation air cleaner 100 is installed. Any position can be used as long as it can detect the temperature in the building, such as in the duct 4a.

  As shown in FIG. 16, when an air conditioner 13 is installed in a building and heating or cooling is performed so that the air in the building has a comfortable temperature, the temperature in the building detected by the building temperature sensor 12a. And the temperature outside the building detected by the outside temperature sensor 12b may increase. When the temperature difference between the inside and outside of the building is large, the power consumption increases because the air-conditioning energy loss increases when the ventilation mode is selected. On the other hand, when the temperature difference between inside and outside the building is small, the air conditioning energy loss due to ventilation is small. Therefore, in the ventilation air cleaning apparatus 100 according to the present embodiment, the difference between the temperature inside the building detected by the building temperature sensor 12a and the temperature outside the building detected by the outside temperature sensor 12b is the first threshold value. In order to suppress the air-conditioning energy loss by ventilation when it is DT1 or more, the ratio at which the ventilation mode is selected is reduced with the duct switching threshold value to be compared with the air pollution degree being a larger value (threshold value C). On the other hand, when the temperature difference between the inside and outside of the building is less than the second threshold value DT2 which is smaller than the first threshold value DT1, the air-conditioning energy loss due to ventilation is small, so the air cleanliness inside the building is given priority. The duct switching threshold value to be compared with the contamination degree is set to a smaller value (threshold value A). Further, when the temperature difference between the inside and outside of the building is equal to or greater than the second threshold value DT2 and less than the first threshold value DT1, the duct switching threshold value to be compared with the air pollution degree is also set to an intermediate value (B).

  In the flowchart of the control operation of FIG. 18, the difference between the temperature inside the building detected by the temperature sensor 12a inside the building and the temperature outside the building detected by the outside temperature sensor is compared with the first threshold value DT1 (step 101). When the temperature difference is equal to or greater than the threshold value DT1, the air pollution level in the building detected by the air pollution level sensor is compared with the duct switching threshold value C (step 102), and the air pollution level is equal to or lower than the duct switching threshold value C. The damper is arranged at the position of the inside air circulation (step 103), and if the air pollution degree is larger than the duct switching threshold C, the damper is arranged at the ventilation position (step 104). If the temperature difference between the air inside the building and the air outside the building is smaller than the threshold value DT1 in step 101, it is compared with the threshold value DT2 (step 105). If the temperature difference is greater than or equal to the threshold value DT2, the air pollution degree sensor detects The air pollution level in the building is compared with the duct switching threshold B smaller than the duct switching threshold C (step 106). If the air pollution level is equal to or lower than the duct switching threshold B, the damper is disposed at the position of the inside air circulation. If the air pollution degree is larger than the duct switching threshold B (step 107), the damper is disposed at the ventilation position (step 108). If the temperature difference between the air inside the building and the air outside the building is smaller than the threshold value DT2 in step 105, the air pollution degree in the building is compared with the duct switching threshold A smaller than the duct switching threshold B (step 109). When the air pollution level is equal to or lower than the duct switching threshold A, the damper is disposed at the inside air circulation position (step 110), and when the air pollution level is greater than the duct switching threshold A, the damper is disposed at the ventilation position. (Step 111).

  As described above, in the ventilation air purifying apparatus according to the present embodiment, the temperature inside the building and the temperature outside the building are detected, and the larger the temperature difference is, the more the ventilation mode is selected. Is enlarged as shown in FIG. Therefore, if the temperature difference between inside and outside the building is large and the loss of air-conditioning energy due to ventilation increases, the range of air pollution that selects the inside air circulation mode is widened to suppress the energy loss and maintain the environment inside the building. Energy conservation can be achieved while maintaining a balance.

Embodiment 6 FIG.
The ventilation air cleaning apparatus 100 according to the fifth embodiment includes a building temperature sensor 12a that detects the temperature inside the building and an outside temperature sensor 12b that detects the temperature outside the building, and these temperature sensors detect the temperature. Ventilation designed to save energy while maintaining the environment inside the building by adjusting the threshold of the air pollution level inside the building used to determine the switching between ventilation mode and inside air circulation mode using the temperature difference between inside and outside the building Although the example of the air purifying apparatus 100 has been shown, switching between the ventilation mode and the inside air circulation mode may be determined only by detecting the temperature outside the building without detecting the temperature inside the building. FIG. 19 shows the relationship between the temperature outside the building and the duct switching threshold, and FIG. 20 shows a flowchart of the control operation for switching between the ventilation mode and the inside air circulation mode for the ventilation air cleaning apparatus 100 according to the present embodiment.

  Next, based on FIG. 19 and FIG. 20, the operation | movement which selects ventilation mode or internal air circulation mode in the ventilation air cleaning apparatus which concerns on this Embodiment is demonstrated. First, the outside air temperature detected by the building outside temperature sensor is compared with a first threshold value OT1 (for example, 28 ° C.) (step 201). When the outside air temperature is lower than the threshold value OT1, it is compared with a second threshold value OT2 (for example, 20 ° C.) (step 202). If the outside air temperature is equal to or higher than the threshold OT2 in step 202, the temperature is almost optimal, and the air-conditioning energy loss is small even if ventilation is performed. In this case, the air pollution level in the building detected by the air pollution level sensor 8 is compared with the duct switching threshold value E (step 203). If the air pollution level is equal to or lower than the duct switching threshold level E, the damper 7 is installed. When the air pollution degree is larger than the duct switching threshold E, the damper 7 is placed at the ventilation position (step 205). If the outside air temperature is equal to or higher than the threshold OT1 in step 201, it is hot and the air conditioning energy loss due to ventilation is large, so the air pollution degree in the building detected by the air pollution degree sensor 8 and the duct switching threshold E The larger duct switching threshold D is compared (step 206). If the air pollution level is equal to or lower than the duct switching threshold D, the damper 7 is placed at the position of the inside air circulation (step 207), and the air pollution level is switched to the duct. If it is larger than the threshold value D, the damper 7 is placed at the ventilation position (step 208).

  As described above, in the ventilation air cleaning apparatus 100 according to the present embodiment, the temperature outside the building is detected, and the outside temperature is high (for example, hotter than 28 ° C) or low (for example, less than 20 ° C). If the temperature outside the building is equal to or higher than a predetermined threshold OT1, or less than a predetermined threshold OT2 lower than the threshold OT1, as shown in FIG. 19, the air conditioning energy loss due to ventilation increases. The ratio of selecting the ventilation mode is reduced by setting the threshold value D to be compared with the air pollution level in the building to a value larger than the threshold value E when the temperature outside the building is not less than OT2 and less than OT1. Therefore, it is possible to obtain a ventilation air cleaning device that suppresses air-conditioning energy loss due to ventilation while maintaining the air environment in the building.

  In the above embodiment, OT1 (for heat determination) and OT2 (for cold determination) are provided as thresholds for determining a state in which the air-conditioning energy loss due to ventilation is greater than the outside air temperature, and compared with the air pollution degree. Although the example in which the threshold value to be performed is two stages of D and E is shown, the number of threshold values to be compared with the outside air temperature may be increased, and the number of threshold values to be compared with the air pollution degree may be three or more stages. Moreover, about the building outside temperature, although the example acquired with the building outside temperature sensor 12b was shown in the said Example, it is good also as what is acquired based on the weather information acquired from a cloud etc. FIG.

Embodiment 7 FIG.
The ventilation air cleaning apparatus 100 according to the seventh embodiment has a function of the calendar 14, and according to the season, the ventilation mode in which the air in the building is discharged outside the building, and the air in the building is removed from the dust remover 5b and the filter 5a. The duct switching threshold value used for the determination of switching to the inside air circulation mode for passing the air and returning it to the building is adjusted. FIG. 21 is a diagram showing a control block configuration of the ventilation air cleaning apparatus 100 according to the present embodiment, and FIG. 22 is a diagram showing a flowchart of a control operation for switching between the ventilation mode and the inside air circulation mode. FIG. 23 is a diagram illustrating an example of the relationship between the season and the duct switching threshold. As shown in FIG. 21, the ventilation air cleaning apparatus 100 according to the present embodiment includes a calendar 14, and estimates air-conditioning energy loss due to ventilation based on seasonal information obtained from the calendar 14, as shown in FIG. 23. Thus, in the season when the loss becomes large (for example, summer / winter), the threshold used for selecting the ventilation mode or the inside air circulation mode is increased, and the ratio of the air pollution degree for selecting the ventilation mode is reduced. It suppresses energy loss. Note that the determination of the season for switching the threshold value to be compared with the air pollution degree does not have to be fixedly set according to the date, but the usage status of the air conditioner 13 in the target building and the weather in the area. The season may be set in consideration of conditions and the like (for example, summer: 7/1 to 9/10, winter: 12/10 to 3/15).

  Next, a control operation for selecting the ventilation mode or the inside air circulation mode in the ventilation air cleaning apparatus 100 according to the present embodiment will be described based on FIG. First, the season is determined from the information acquired from the calendar 14 (step 301). As a result, when the season is summer or winter, the air-conditioning energy loss due to ventilation is generally large, and when the season is spring or autumn, the air-conditioning energy loss due to ventilation is generally small. Therefore, when the season is summer or winter, the air pollution degree in the building detected by the air pollution degree sensor 8 is compared with the duct switching threshold F (the threshold F is larger than the threshold G described later) (step 302). If the air pollution level is less than or equal to the duct switching threshold F, the damper 7 is placed at the inside air circulation position (step 303). If the air pollution level is greater than the duct switching threshold F, the damper 7 is set to the ventilation position. (Step 304). If the season is spring or autumn in step 301, the air pollution level in the building detected by the air pollution level sensor 8 is compared with the duct switching threshold value G smaller than the duct switching threshold value F (step 305). If the degree of contamination is less than or equal to the duct switching threshold G, the damper 7 is placed at the inside air circulation position (step 306), and if the degree of air pollution is greater than the duct switching threshold G, the damper 7 is placed at the ventilation position. (Step 307).

  As described above, in the ventilating air cleaning apparatus 100 according to the present embodiment, the calendar 14 is used to determine the season, and in the season when the air-conditioning energy loss due to ventilation increases, the threshold value F compared with the air pollution degree in the building. Is a value larger than the threshold value G in the other seasons, and the ratio of selecting the ventilation mode is reduced. Therefore, the air-conditioning energy loss by ventilation can be suppressed as a whole, maintaining the air environment in a building.

Embodiment 8 FIG.
Note that, as shown in the flowchart of the control operation for switching between the ventilation mode and the inside air circulation mode shown in FIG. 24 and the example of the duct switching threshold shown in FIG. 25, not only the season but also the time zone may be considered. For example, even in summer, the outside air temperature often falls in the middle of the night or early morning. Therefore, by setting the duct switching threshold to be the same as that in spring or autumn, for example, in the late night and early morning in summer, The rise can be suppressed. Hereinafter, switching operation between the ventilation mode and the inside air circulation mode of the ventilation air cleaning apparatus 100 according to the present embodiment will be described based on the flowchart of the control operation of FIG.

  In FIG. 24, the season is determined based on the information of the calendar 14 (step 401), and when it is determined that it is summer, the time is also determined whether the outside temperature is not hot from midnight to early morning (for example, 0:00 to 6:00). Step 402). As a result, if it is determined in step 401 that it is winter, the outside air temperature is low (cold) and the air conditioning energy is large, and if it is determined in step 402 that it is not late night to early morning, the outside temperature is high (hot), Air conditioning energy is large. In these cases, the air pollution level in the building detected by the air pollution level sensor 8 is compared with the duct switching threshold value H (step 403). If the air pollution level is equal to or lower than the duct switching threshold level H, the damper 7 is used. Is placed at the position of the inside air circulation (step 404), and when the air pollution level is larger than the duct switching threshold H, the damper 7 is placed at the position of ventilation (step 405). If it is determined in step 401 that it is spring or autumn, or if it is determined in step 402 that it is from midnight to early morning, the air conditioning energy of the building is relatively small, and in these cases, it is smaller than the threshold value H. The threshold value I is compared with the air pollution level in the building detected by the air pollution level sensor 8 (step 406). If the air pollution level is equal to or lower than the duct switching threshold level I, the damper 7 is disposed at the position of the inside air circulation. (Step 407) If the air pollution level is larger than the duct switching threshold I, the damper 7 is placed at the ventilation position (Step 408).

  As described above, in the ventilation air cleaning apparatus 100 according to the present embodiment, the calendar 14 determines the season and the time zone, and the air pollution in the building occurs in the season / time zone when the air-conditioning energy loss due to ventilation increases. The ratio at which the ventilation mode is selected is reduced by setting the threshold value H to be compared with the degree to a value larger than the threshold value I in the other seasons. Therefore, the air-conditioning energy loss by ventilation can be suppressed as a whole, maintaining the air environment in a building.

Embodiment 9 FIG.
The ventilation air cleaner 100 according to the ninth embodiment includes an activity sensor 15 that detects the amount of activity of a person in the building, and the amount of air blown from the blower 6 of the ventilation air cleaner 100 according to the detected amount of activity. It is something to control. FIG. 26 shows a control block configuration of the ventilation air cleaner 100 according to the present embodiment, and FIG. 27 is a flowchart of a control operation for adjusting the air flow rate of the ventilation air cleaner 100 according to the amount of activity of people in the building. It shows. FIG. 28 is a diagram showing a relationship between the activity amount detection value of the person in the building detected by the activity amount sensor 15 and the air blowing amount of the air blowing unit 6, and dust is generated in the building as the activity amount is larger. Since the amount of soaring may increase, the ventilation amount of the ventilation air cleaning device 100 is increased. Hereinafter, operation | movement of the ventilation air cleaning apparatus 100 which concerns on this Embodiment is demonstrated using these figures.

  In FIG. 27, in the initial state, the ventilation air cleaning apparatus 100 is in a stopped state, and the control unit 10 determines the presence or absence of a person in the building based on information from the human sensor 9 (step 501). If there are no people, just wait. When the presence of a person is detected, the count of the timer 11 is cleared (step 502) and initialized, and then the count is started (step 503). And the motor 6b of the ventilation part 6 is driven by high output, the rotation speed of the fan 6a is enlarged, and ventilation volume is enlarged (step 504). Next, the detection value by the air pollution degree sensor 8 is compared with a predetermined duct switching threshold value (step 505). If the detected air pollution degree is less than the duct switching threshold value, the damper 7 is controlled to control the position of the inside air circulation. And the inside air circulation mode is set (step 506). On the other hand, when the detected air pollution level exceeds the duct switching threshold, the damper 7 is controlled to enter the ventilation mode (step 507).

  Next, by determining whether or not the timer 11 has exceeded a predetermined value T1, it is determined whether or not a predetermined time has elapsed since a person was detected in the building (step 508). If the predetermined value T1 is not exceeded, the timer 11 is counted up (step 509), and the process returns to step 505. When the timer 11 exceeds the predetermined value T1 in step 508, the activity amount of the person in the building detected by the activity sensor 15 is compared with a predetermined threshold (AC1 to AC4) (step 510 to step 500). 513). As a result, when the amount of activity is greater than AC1, the amount of air blown by the blower 6 is set to Vc1 (step 514), and when the amount of activity is AC2 to AC1, the amount of blown air of the fan 6 is set to Vc2 (step 515). When the activity amount is AC3 to AC2, the blowing amount of the blowing unit 6 is set to Vc3 (step 516). When the activity amount is AC4 to AC3, the blowing amount of the blowing unit 6 is set to Vc4 (step 517). T1 is set as the counter value of, and the count of the period when the activity amount of the person in the building is AC4 or less is cleared (step 518). If it is determined in step 513 that the activity amount of the person in the building is AC4 or less, it is considered that the person in the building has stopped the activity or has not gone out of the building. The air volume is set to Vc5 (step 519), and the timer 11 is counted up (step 520). Next, it is determined whether the counter value of the timer 11 has reached a predetermined value (T1 + T2) (step 521). If the counter value is not less than the predetermined value (T1 + T2), the process returns to step 505. In step 521, if the activity amount detected by the activity amount sensor 15 continues for a predetermined time (T2) at a level equivalent to the state where there is no person in the building, the state in which there is no person in the building is determined. As a result, the ventilation of the air blowing unit 6 is stopped (step 522), the process returns to step 501, and waits for a person to be detected in the building.

  As described above, in the ventilation air cleaning apparatus 100 according to the present embodiment, when a person is detected in the building, the amount of air blown by the blower 6 is increased, and the degree of air pollution in the building due to human activity is increased. While suppressing the rise, it is possible to reduce the delay in detecting the rise in the degree of contamination of the air in the building by blowing air. In addition, after a predetermined time has elapsed since the start of driving of the air blower 6, the air flow of the air blower 6 is adjusted according to the amount of activity of people in the building. When the possibility of an increase in the degree of pollution is low, it is possible to reduce the amount of air blown according to the amount of activity, thereby saving energy and suppressing noise.

  FIG. 26 shows an example in which a human sensor 9 that detects the presence or absence of a person in the building and an activity sensor 15 that detects the amount of activity of a person in the building are separately provided. In addition to detecting whether or not there is a person in the building, the structure may also serve as the activity amount sensor 15 that detects the amount of activity (movement amount) of the person in the building based on the detection level. The activity amount sensor 15 may be configured by an image sensor different from the human sensor 9, a position sensor worn by a person, a heart rate monitor, a respiration sensor, or the like, and detect the activity amount. .

Embodiment 10 FIG.
The ventilation air cleaning apparatus 100 according to the tenth embodiment detects not only the presence or absence of a person in the building but also the sleeping state of the person in the building and adjusts the amount of air blown by the blower 6 according to the state. It is a thing. As for the ventilation air cleaning apparatus 100 according to the present embodiment, the control block configuration thereof is shown in FIG. 29, the arrangement in the building is shown in FIG. 30, the flowchart of the control operation by the control unit 10 is shown in FIG. FIG. 32 shows a time chart regarding the detection information of the bedding pressure sensor (sleeping detection sensor) 16 and the air pollution degree sensor 8, the amount of air blown by the air blowing unit 6, and the duct position state (ventilation mode / inside air circulation mode). . As shown in FIGS. 29 and 30, the air pollution degree sensor 8a in the building, the air pollution degree sensor 8b outside the building, and the human sensor 9 for detecting people in the building are provided. In addition to detecting the presence or absence of a person, a bed 17 pressure sensor 16 that is a bed detection sensor is provided in the bed 17 that is a bedcloth to detect whether or not the person is in a sleeping state located on the bedclothes. In addition, since the bedding pressure sensor 16 is located in the bedding 17 separated from the ventilation air cleaner main body 100a, the detected bedtime information is transmitted from the transmitter 18 to the receiver 19 of the ventilator air cleaner main body 100a. Hereinafter, based on FIG.31 and FIG.32, operation | movement of the air purifying apparatus 100 which concerns on this Embodiment is demonstrated.

  In FIG. 31, in the initial state, the ventilation air cleaner 100 is in a stopped state with no people in the building. First, the control unit 10 determines whether or not there is a person in the building based on information from the human sensor 9 (step 601). If no person is detected in the building, wait. When a person is detected in the building, the motor 6b of the blower 6 is driven at a high output to increase the amount of blown air (step 602). Next, the air pollution level detected by the building air pollution level sensor 8a is compared with the duct switching threshold (step 603). In the ventilation air cleaning apparatus 100 according to the present embodiment, as shown in FIG. 32 (d), the outside air pollution degree detected by the outside air pollution degree sensor 8b is detected during operation in the inside air circulation mode. “Off-building air pollution degree + p” with offset p added to the above, and “off-building air pollution degree with offset q (p> q> 0) added to outside building air pollution degree during operation in the ventilation mode” + Q ”. When the air pollution level in the building is larger than the duct switching threshold “outside the building air pollution level + p”, the damper 7 is placed in the ventilation position and is taken into the ventilation air purifier 100 from the suction port 1 in the building as a ventilation mode. The air inside the building is discharged out of the building through the exhaust port 3 (step 604). On the other hand, when the air pollution level in the building is equal to or less than the duct switching threshold “air pollution level outside the building + q”, the damper 7 is placed in the inside air circulation position to enter the inside air circulation mode. It returns to the building from the outlet 2 via the dust remover 5b and the filter 5a (step 605).

  Next, it is determined whether or not a person in the building is in a sleeping state (step 606). Specifically, whether or not a person is on the bed is detected by the bedding pressure sensor 16 provided on the bed 17, and the receiving unit of the ventilation air cleaning device main body 100 a is connected to the transmitting unit 18 connected to the bedding pressure sensor 16. The sleeping state is determined based on the information transmitted to 19. If it is determined that the patient is in the sleeping state, the motor 6b of the blowing unit 6 is controlled to reduce the blowing amount (step 607), and if the sleeping state is not determined, the motor 6b of the blowing unit 6 is controlled to increase the blowing amount (step). 608).

  Next, it is determined whether or not there is a person in the building based on the detection information of the human sensor 9 (step 609). If a person is detected, whether the counter of the timer 11 is being counted (whether no person exists) (Step 610). If it is not counting, in a state where there is a person in the building, the process returns to step 603 to continue monitoring the air pollution level and the sleeping state. If it is counting, it is detected again from the state in which no person is detected in the building, and after counting of the counter of the timer 11 is stopped (step 611), the process returns to step 602 to increase the air flow rate.

  Even if no person in the building is detected in step 609, it is determined whether or not the counter of the timer 11 is counting (step 612). If the counter is counting, the timer 11 is counted up (step 613). It is determined whether or not the value is equal to or greater than T3 (614). If it is less than the predetermined value T3, the process returns to step 603 to continue monitoring the degree of air pollution, the presence of people in the building, and the sleeping state. On the other hand, if it is equal to or greater than the predetermined value T3, it means that a predetermined time has passed since the person is no longer sensed in the building, and it is determined that the person in the building has disappeared, and the motor 6b of the blower 6 is driven. Stop and stop the ventilation of the ventilation air cleaner 100 (step 615), and return to step 601.

  When the counter of the timer 11 is not counting in step 612, it is a case where the state is changed from the state in which a person is detected in the building to the state in which no person is detected, and after the counter of the timer 11 is cleared (step 616), Counting is started (step 617), and the motor 6b of the blower 6 is controlled to reduce the blown amount (step 618). Then, after returning to step 603, the air pollution level in the building, the sleeping state, and the presence of people in the building are monitored for a while.

  As described above, according to the ventilation air cleaning apparatus 100 according to the present embodiment, the bedding pressure sensor 16 serving as a bedtime detection unit is provided, and when it is detected that a person in the building has gone to bed, the blower 6 Therefore, while maintaining the air environment in the building, energy saving and noise suppression can be achieved, and a ventilation air cleaning device that does not disturb the user's sleep can be obtained.

Embodiment 11 FIG.
The ventilation air cleaning apparatus 100 according to the eleventh embodiment adjusts the amount of air blown from the blower 6 according to the operating state of the specific electrical equipment load 20 so as to suppress an increase in the degree of air pollution in the building. It is a thing. FIG. 33 shows a control block configuration of ventilation air cleaning apparatus 100 according to the present embodiment, FIG. 34 shows an arrangement in a building, and FIG. 35 shows a flowchart of control operations in control unit 10. Also, in FIG. 36, (a) is the human detection state of the human sensor 9, (b) is the operating state of the air conditioner 20a that is the specific electric load, and (c) is the IH cooking heater 20b that is the specific electric load. Operation state, (d) is the operation state of the vacuum cleaner 20c, which is a specific electric load, (e) is the air pollution degree and damper switching threshold in the building, (f) is the position of the damper 7, and (g) Is a time chart of the operation (air flow rate) state of the air blowing unit 6. In the present embodiment, the air conditioner 20a, the IH cooking heater 20b, and the cleaner 20c are specific electrical equipment loads 20 that affect the control operation of the ventilation air cleaning device 100. The operation information of the air conditioner 20a, the IH cooking heater 20b, and the cleaner 20c is transmitted from the transmission units (18a to 18c) provided in the respective electric equipment loads to the reception unit 19a provided in the ventilation air cleaner main body 100b, and is controlled. The unit 10 performs the control operation using the received operation information of the electric equipment load. The specific electric equipment load 20 is not limited to the air conditioner 20a, the IH cooking heater 20b, and the vacuum cleaner 20c, and may be an electric equipment load such as a washing dryer, a dish dryer, or a rice cooker. Hereinafter, the control operation of the ventilation air cleaning apparatus 100 according to the present embodiment will be described with reference to FIGS.

  In FIG. 35, in the initial state, the ventilation air cleaning apparatus 100 is in a stopped state with no people in the building, and determines whether there is a person in the building based on information from the human sensor 9 (step 701). If no person is detected in the building, wait. When a person is detected in the building, the motor 6b of the blower 6 is driven at a high output to increase the amount of blown air (step 702). Next, the duct switching threshold is set as a predetermined threshold (step 703), and it is determined from the operation information of the air conditioner 20a received by the reception unit 19a (step 704). Is increased by adding a predetermined value α to the duct switching threshold (step 705). As a result, the ratio of operating in the ventilation mode is lowered, and an increase in air conditioning energy loss is suppressed. The operation information of the IH cooking heater 20b is also received by the receiving unit 19a, and it is determined whether it is operating (step 706). If the IH cooking heater 20b is in operation, the level of air pollution in the building, such as steam and oily smoke, is expected to increase, so the ratio of operating in the ventilation mode is increased by reducing the duct switching threshold by reducing the predetermined value β. (Step 707), the deterioration of the air environment in the building is suppressed. Next, the air pollution level detected by the building air pollution level sensor 8a is compared with the duct switching threshold (step 708). If the detected air pollution level is less than or equal to the duct switching threshold, the damper is placed at the position of the internal air circulation to enter the internal air circulation mode (step 709). If the detected air pollution level is greater than the duct switching threshold, the damper is set. Is placed in the ventilation position to enter the ventilation mode (step 710). In the ventilation air cleaning apparatus 100 according to the present embodiment, the duct switching threshold is adjusted according to the operating state of the specific electrical equipment load 20 as shown in FIG. In the ventilation air cleaning apparatus 100 according to the present embodiment, when the air conditioner 20a is in an operating state, the temperature difference between the inside and outside of the building becomes large due to heating or cooling, and air conditioning by ventilation when operated in the ventilation mode. Since energy loss increases and power consumption also increases, the duct switching threshold is adjusted to a larger value to increase the operating ratio in the inside air circulation mode and suppress the increase in power consumption. On the other hand, in the operating state of the IH cooking heater 20b, oil smoke, water vapor, and the like are generated by cooking, so the necessity of ventilating the air in the building is increased. Therefore, during the operation of the IH cooking heater 20b, the duct switching threshold value is adjusted to be small, the ratio of operation in the ventilation mode is increased, and the ventilation mode operation is performed early, thereby suppressing deterioration of the air environment in the building. it can. Moreover, it prevents that the filter 5a and the dust remover 5b become dirty with water vapor or oily smoke generated by cooking. Thereby, the maintenance interval of the ventilation air cleaner 100 can be lengthened. As with the IH cooking heater 20b, in the case of the vacuum cleaner 20c, it is expected that dust will rise in the room during operation. Therefore, by reducing the predetermined value β and reducing it to increase the ratio of operating in the ventilation mode, the air environment in the building Can be prevented, and the maintenance interval of the ventilation air cleaner 100 can be lengthened.

  Next, it is determined whether or not there is a person in the building based on the detection information of the motion sensor 9 (step 711). If no person is detected, the blowing by the blowing unit 6 is stopped (step 712). Return to 701. If it is determined in step 711 that there is a person in the building, the operation state of the specific electric equipment load 20 is determined (step 713). As a result, as shown in FIG. 36 (g), if any specific electric equipment load 20 is in an operating state, dust easily rises in the building, so the counter of the timer 11 is cleared (step 714), The motor 6b of the blower 6 is controlled to increase the blown amount (step 715). If none of the specific electrical loads 20 is in an operating state in step 713, it is determined whether or not the counter value of the timer 11 is equal to or greater than a predetermined value T4 (step 716). The timer 11 is counted up without changing (Step 717), and when the counter value is equal to or greater than a predetermined value, the air flow rate of the air blowing unit 6 is reduced (Step 718), and the process returns to Step 703 to return to a specific electric device. Continue monitoring the operating state of the load 20, the presence of people in the building, and the degree of air pollution in the building.

  As described above, according to the ventilation air cleaning apparatus 100 according to the present embodiment, the threshold value of the air pollution level for selecting the ventilation mode and the inside air circulation mode according to the operation state of the specific home appliance load 20 is set. Since the air volume of the air blower 6 is adjusted, the air environment in the building is maintained, the air-conditioning energy loss due to ventilation is suppressed, and a ventilation air cleaning device that extends the maintenance interval is obtained. Can do. Moreover, when it stops after operating a specific electric equipment load, since the ventilation part 6 maintains air volume for a while, the influence by operation | movement of an electric equipment load can be suppressed, and the air environment in a building is made into a favorable state. Can be maintained.

  In the above-described embodiment, the air conditioner 20a, the IH cooking heater 20b, and the vacuum cleaner 20c are shown as the specific electric equipment load 20, but are not limited thereto. Etc. may be used as a specific electric equipment load. Since rice cookers, washing dryers, and tableware dryers generate water vapor even in their operating state, the threshold value for switching ducts should be reduced if these electric devices are in a specific electric device load 20 in the operating state. It is good also as adjusting so that the ventilation volume of the ventilation part 6 may be enlarged. The value of the predetermined value β may be a value different from βa, the IH cooking heater βb, and the cleaner βc, depending on the device with a specific device load.

  1 suction port, 2 outlet port, 3 discharge port, 4 duct, 5 air cleaning unit, 5a filter, 5b dust remover, 6 air blowing unit, 6a fan, 6b motor, 7 damper, 8 air pollution sensor, 8c CO2 sensor, 8d Dust sensor, 9 Human sensor, 10 Control unit, 11 Timer, 12a Building temperature sensor, 12b Outside temperature sensor, 13 Air conditioner, 14 Calendar, 15 Activity sensor, 16 Sleep detection sensor, 17 Bed (bedding) ), 18 transmitter, 19 receiver, 20 specific electrical equipment load, 20a air conditioner, 20b IH cooking heater, 20c vacuum cleaner, 100 ventilation air purifier.

Claims (12)

A suction port for sucking air from inside the building,
An outlet for blowing air into the building;
An exhaust port for discharging air outside the building;
A duct connecting the suction port and the outlet and connecting the suction port and the exhaust port;
A blower provided in the duct;
A ventilation mode in which the connection between the suction port and the blowout port of the duct is cut off to connect the suction port and the exhaust port, and a connection between the suction port and the exhaust port of the duct is cut off and the suction is made A duct switching unit for switching between the inside air circulation mode for connecting the mouth and the outlet, and
An air purifier provided in a portion connecting the suction port and the outlet of the duct;
A human detection unit for detecting the presence or absence of a person in the building;
An air pollution degree detection unit for detecting the degree of air pollution in the building;
A control unit for controlling the entire apparatus;
With
The control unit controls the air volume of the air blowing unit according to the air pollution level detected by the air pollution level detection unit, and controls the duct switching unit when the air pollution level exceeds a predetermined value. When the ventilation mode is set and the air pollution level does not exceed the predetermined value, the duct switching unit is controlled to enter the internal air circulation mode. The ventilation air purifying apparatus is characterized in that when the state shifts from a state where no air is detected to a state where a person is detected, the amount of air blown by the air blowing unit is increased. Electric equipment state detection means for detecting the operating state of the electric equipment in the building,
The ventilation air cleaning apparatus according to claim 1, wherein the control unit controls an air flow rate of the air blowing unit according to an operation state of a specific electric device detected by the electric device state detection unit. Electric equipment state detection means for detecting the operating state of the electric equipment in the building,
The control unit adjusts a predetermined value to be compared with the air pollution level detected by the air pollution level detection unit when controlling the duct switching unit according to an operation state of a specific electrical device detected by the electrical device state detection unit. The ventilation air cleaning apparatus according to claim 1 or 2, wherein It has a timer that counts time,
When the control unit detects that the operation state of the specific electric device in the room has shifted from the operation state to the stop state by the electric device state detection unit, the air volume of the air blowing unit is held for a certain period of time. The ventilation air cleaning apparatus according to claim 2. The air pollution level detection unit detects a plurality of types of air pollution levels,
The control unit is an air pollution level detected by the air pollution level detection unit, and the first type of air pollution level has a higher degree of improvement when operating in the internal air circulation mode when operating in the ventilation mode. When the air pressure exceeds a predetermined value, the duct switching unit is controlled to enter the ventilation mode, and when the first type of air pollution does not exceed the predetermined value, the duct switching unit is controlled to control the inside air circulation. The ventilation air cleaning device according to claim 1, wherein the ventilation amount is controlled in accordance with a second type of air pollution level detected by the air pollution level detection unit. The person detection unit detects the presence or absence of a person in the building and detects the amount of activity of the person in the building,
The ventilation air cleaning apparatus according to claim 1, wherein the control unit controls the amount of air blown from the air blowing unit according to the amount of activity of the person detected by the human detection unit. Comprising a bedtime detecting means for detecting a bedtime state of the person in the building,
The ventilation air cleaning apparatus according to claim 1, wherein the control unit controls the air flow rate of the air blowing unit based on a sleeping state of a person in the building by the bedtime detection unit. The air pollution level detection unit detects the air pollution level inside the building and the air pollution level outside the building,
The controller determines the air pollution level in the building detected by the air pollution level detection unit based on the air pollution level outside the building detected by the air pollution level detection unit when operating the air blowing unit. When it exceeds a predetermined value, the duct switching unit is controlled to enter the ventilation mode, and when the air pollution level in the building detected by the air pollution level detection unit does not exceed the predetermined value, the duct The ventilation air purifier according to any one of claims 1 to 7, wherein a switching unit is controlled to enter the inside air circulation mode. Temperature information acquisition means for acquiring temperature information inside the building and outside the building,
When the difference between the temperature inside the building acquired by the temperature information acquisition unit and the temperature outside the building is large, the control unit has a small difference between the temperature inside the building and the temperature outside the building. The ventilation air purifier according to any one of claims 1 to 8, wherein the predetermined value to be compared with the indoor air pollution level detected by the air pollution level detection unit is increased. Temperature information acquisition means for acquiring temperature information outside the building,
When the temperature outside the building acquired by the temperature information acquisition unit is higher than a first predetermined temperature and lower than a second predetermined temperature, the control unit is less than the first predetermined temperature or the second predetermined temperature. The ventilation air according to any one of claims 1 to 8, wherein the predetermined value to be compared with the indoor air pollution level detected by the air pollution level detection unit is made smaller than in the above case. Cleaning device. With a calendar that can distinguish the four seasons,
The control unit determines the predetermined value to be compared with the indoor air pollution level detected by the air pollution level detection unit when the calendar determines that it is summer / winter than when it is determined spring / autumn. The ventilation air cleaning device according to any one of claims 1 to 7, wherein the ventilation air cleaning device is enlarged. When the control unit shifts from a state in which a person is detected in the building by the human detection unit to a state in which a person is not detected in the building in a state where the amount of air blown by the air blowing unit is a predetermined amount or more, It controls so that ventilation volume may be reduced, The ventilation air cleaning apparatus of Claims 1-10 characterized by the above-mentioned.

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