JP6153398B2 - Heating equipment and operation method thereof - Google Patents

Description

  The present invention includes a temperature detection means for detecting an indoor temperature, a setting unit for setting a set temperature as a heating target temperature, and a temperature detected by the temperature detection means is raised to a set temperature and maintained. Control means for performing energy saving operation for reducing energy consumption in the heating operation, and the control means, after the detected temperature reaches the set temperature in the energy saving operation, The present invention relates to a heating device that lowers a control target temperature below the set temperature with the operation time of the device, and an operation method thereof.

In recent years, due to increasing interest in energy problems, many heating appliances focusing on energy saving have been developed. Such a heating device has an energy saving operation mode, and in this energy saving operation mode, by adjusting the control target temperature so as not to impair the user's experience (the user does not feel cold), the air conditioning In order to reduce the energy consumed by the device, it is known.
For example, in the heating device disclosed in Patent Document 1, if the save operation (energy-saving operation) switch is turned on when the room temperature reaches a set temperature after a while after activation, the energy saving of the heating device is performed. It is configured to be able to perform driving that enhances the performance. In the energy saving operation, the control target temperature of the heating device is controlled to be set to a temperature lower than the set temperature set by the user, and the control target temperature of the device is set to a set time (for example, 30 minutes). ), The temperature is 1 ° C. lower than the set temperature, and finally 2 ° C. lower than the set temperature. In the heating equipment, by reducing the control target temperature step by step in this way, it is possible to prevent the control target temperature from being lowered at once and impair the user's experience (making the user feel cold). Yes.
Further, the technology disclosed in Patent Document 2 is a heating system capable of performing floor heating operation, and when the floor heating operation continues for a predetermined time, the correction operation in which the set floor temperature is lowered by the correction set value can be performed. It is configured. Further, in the correction operation, the correction set value is set to be larger as the duration time of the floor heating operation is longer.

JP-A-60-243432 JP 2003-097813 A

In the energy-saving operation of the heating device described in Patent Document 1, the operation is not considered even in the surrounding environment such as the room temperature where the heating device is installed, and there is room for improvement in terms of energy-saving performance. . For example, in a situation where energy saving operation is being performed and the target control temperature of the device is set to a temperature 2 ° C lower than the set temperature, immediately after the automatic fire extinguishing timer is activated and fire extinguishes or the operation is stopped due to an erroneous operation In addition, when the operation is restarted, the indoor walls and the like have been warmed by the operation so far, and the user feels that the walls are sufficiently warm due to the radiant heat from the walls and the like. Operation is executed from the beginning. In this case, the control target temperature of the device is lowered by 1 ° C. every set time (for example, 30 minutes) after being raised from the temperature 2 ° C. lower than the set temperature to the set temperature again. From the viewpoint of not impairing the user's experience (not making the user feel cold) until the temperature becomes 2 ° C lower than the set temperature (1 hour in this example), energy-saving operation is performed at an unnecessarily high temperature. As a result, there is a problem that the energy saving performance is impaired by the amount of energy associated therewith.
Also in the heating system of Patent Document 2, when the floor heating operation continues for a predetermined time, only the correction operation in which the set floor temperature is lowered by the correction setting value is executed, and the heating device disclosed in Patent Document 1 is disclosed. In the same manner as the above, the operation was not considered in consideration of the surrounding environment such as the room temperature where the heating device such as the floor heating system was installed, and there was room for improvement from the viewpoint of energy saving.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a heating device capable of further improving energy saving while appropriately preventing a user from experiencing a bodily sensation, and an operation method thereof. Is to provide

A temperature detecting means for detecting the temperature in the room, a setting unit for setting a set temperature to be the heating target temperature,
In energy-saving operation in which the energy consumption is lower than that of the heating operation in which the detected temperature detected by the temperature detecting means is raised to the set temperature and maintained, the device control is performed after the detected temperature reaches the set temperature. In the heating equipment provided with the reduction rate adjusting means for lowering the target temperature below the set temperature with the operation time of the equipment, the characteristic configuration is:
Comprising a temperature change form detecting means for detecting a rising form of the detected temperature from the start of the heating operation until the detected temperature reaches the set temperature;
The temperature change mode detection means detects a rate of increase per unit time of the detected temperature at the start of the heating operation as the detected temperature rise mode,
The decrease rate adjusting means is configured to calculate a decrease rate per time of the control target temperature after the detected temperature has reached the set temperature based on the detected temperature increase form detected by the temperature change form detecting means. This is to perform the reduction rate adjustment process to be adjusted ,
In the decrease rate adjustment process, the decrease rate adjustment means is a unit time of the control target temperature after the detected temperature has reached the set temperature as the increase rate is small regardless of the temperature at the start of operation. It is in the point which adjusts the fall rate in hitting to the high side .

According to the above characteristic configuration, in particular, after the detected temperature reaches the set temperature, the decrease rate adjusting means is based on the detected temperature increasing mode from when the heating operation starts until the detected temperature reaches the set temperature. Therefore, for example, when the detected temperature reaches the set temperature and the device is in steady operation, immediately after the device stops, When operation is resumed and the detected temperature rises slowly (for example, when the rate of increase in detected temperature per unit time is slow), the room is sufficiently warm and the user's experience is impaired. Since it can be determined that there is no possibility of causing the user to feel cold, the rate of decrease of the control target temperature per unit time can be increased to improve energy saving.
On the other hand, when the temperature of the detected temperature rises steeply (for example, when the rate of rise of the detected temperature per unit time is steep) immediately after starting the heating operation of the device in a state where the room is relatively cold Since it can be determined that the room is not warm enough and the user's experience is likely to be impaired (the user feels cold), the rate of decrease of the control target temperature per unit time is reduced, It is possible to make it difficult to impair the user's experience (to make it difficult for the user to feel cold).
As a result, according to the above-described heating device, it is possible to realize a heating device that can improve energy saving while preventing the user's feeling from being impaired.

Normally, in energy saving operation, in order to inform the user of the set temperature, the set temperature is displayed on the display unit of the device even when the control target temperature of the device is lowered below the set temperature.
Therefore, in the present invention, in the energy saving operation, when the control target temperature of the device is set to a temperature 2 ° C. lower than the set temperature, the operation is restarted immediately after the heating device is stopped by automatic fire extinguishing or the like. Is executed, the control target temperature of the device immediately after that is controlled not to be 2 ° C. lower than the set temperature but to be set to the set temperature.
As a result, after the operation of the device is stopped, the control target temperature of the device is always set to the set temperature, so that it is displayed on the display unit of the actual room temperature and the device at the initial stage of energy saving operation. This prevents a deviation from temperature and prevents the user from misidentifying that the device has failed.

  According to the above characteristic configuration, the rate of decrease adjustment means, in the rate of decrease adjustment process, the smaller the rate of increase of the detected temperature per unit time at the start of heating operation, that is, the detected temperature at the start of heating operation. Is closer to the set temperature, and even if the control target temperature is lowered, the control target after the detected temperature reaches the set temperature is lower as the possibility that the user's experience is less likely (the user is less likely to feel cold) The rate of decrease in temperature per unit time can be adjusted to a higher side, energy consumption can be reduced, and energy saving performance in energy saving operation can be improved.

Further features of the heating device of the present application are as follows:
In the reduction rate adjustment process, the reduction rate adjustment means,
During the period until the detected temperature reaches the target lower limit temperature determined corresponding to the set temperature, the control target temperature is decreased at a constant decrease rate,
After the detected temperature reaches the target lower limit temperature, the control target temperature is maintained at the target lower limit temperature.

According to the above characteristic configuration, in the decrease rate adjustment processing, the control target temperature is decreased at a constant decrease rate until the detected temperature reaches the target lower limit temperature. Therefore, it is possible to prevent the user's feeling from being impaired (making the user feel cold).
In addition, after the detected temperature reaches the target lower limit temperature, that is, after the detected temperature has decreased to the maximum lower limit temperature that can be lowered from the set temperature, the control target temperature is maintained at the target lower limit temperature, thereby impairing the user's experience ( To prevent the user from feeling cold).

Further features of the heating device of the present application are as follows:
The decrease rate adjusting means is configured to prohibit the execution of the decrease rate adjusting process when the set temperature is set to a value lower than a predetermined lower limit threshold value of the decrease rate adjusting process.

According to the above characteristic configuration, when the set temperature is set to a value lower than the predetermined lower limit threshold value of the decrease rate adjustment process, the execution of the decrease rate adjustment process is prohibited and the detected temperature reaches the set temperature. By not adjusting the rate of decrease in the control target temperature of the device to the higher side, it is possible to avoid damaging the user's experience as much as possible.
Note that the lower limit threshold value of the reduction rate adjustment process is a threshold value that can vary depending on the outdoor temperature, the indoor temperature before the heating operation, and the like. In the present invention, the lower limit threshold value is about 12 ° C to 15 ° C. is there.

The operation method of the heating equipment of this application is
In energy-saving operation, which consumes less energy than heating operation, where the detected temperature detected in the room is maintained up to the set temperature, and after the detected temperature reaches the set temperature, the control target temperature of the device is The operation method of lowering the set temperature with the operation time of
Detecting a rising form of the detected temperature from the start of operation of the device until the detected temperature reaches the set temperature, and based on the detected temperature rise form, after the detected temperature has reached the set temperature A reduction rate adjustment process for adjusting a reduction rate per hour of the control target temperature is performed.

  According to the above-described operation method of the heating device, as described above, in the energy saving operation, the reduction rate adjustment process is executed without impairing the user's experience (making the user feel cold) Energy saving can be improved.

Schematic configuration diagram of heating equipment Schematic configuration diagram of the driving operation reception unit Block diagram showing the relationship between the controller and other components A graph illustrating the reduction rate adjustment process Control flow diagram for heating operation Control flow diagram of reduction rate adjustment processing Graph illustrating the reduction rate adjustment processing according to the implementation embodiments

  The heating device 100 and the operation method thereof according to the present invention can execute an energy saving operation, and in the energy saving operation, while suppressing the loss of the user's experience (making the user feel cold), the energy saving property. It relates to what can be further improved.

[Reference form]
As shown in FIG. 1 and FIG. 2, the heating device 100 of the present invention burns a fuel gas G together with combustion air A, and the outside air heated by the burner 20 with outside air sucked from outside is sent to the outside. A convection fan 40 that blows out, a driving operation reception unit 50 that receives an external driving operation, and a control device 80 that controls the burner 20 and the convection fan 40 based on the driving operation received by the driving operation reception unit 50. Etc.
As shown in FIG. 1 (b), the heating device 100 is provided with a suction port 70 for taking outside air as combustion air A on the back surface, and blows out combustion exhaust gas after combustion as warm air on the entire surface. An air outlet 72 is provided. An air filter 71 for capturing dust is set outside the suction port 70.

As shown in FIG. 1A, the burner 20 is connected to a fuel gas flow path 24 that leads the fuel gas G, and the fuel gas flow path 24 stops the flow of the fuel gas G, or The allowed first solenoid valve 26a and the second solenoid valve 26b, the proportional valve 25 capable of adjusting the flow rate of the fuel gas G, and the injection nozzle 23 for injecting the fuel gas G toward the burner 20 are downstream from the upstream side. In order. As described above, the reason why the two first electromagnetic valves 26a and the second electromagnetic valve 26b are provided as electromagnetic valves is that the fuel gas G leaks to the downstream side of the fuel gas flow path 24. This is to prevent more reliably.
The burner 20 includes an igniter 21 that ignites an air-fuel mixture of the fuel gas G and the combustion air A guided to the combustion chamber 22, and a flame sensor S 5 that can detect the flame extinguishing by detecting the formed flame. And.

  The convection fan 40 includes a cross flow fan 41 and a motor 42 that rotates the cross flow fan 41 in the circumferential direction. As shown in FIG. 1B, when the motor 42 rotates the cross flow fan 41, outside air is taken in from the suction port 70, and a part of the outside air is supplied to the combustion chamber 22 of the burner 20 as combustion air A. The other part is heated by the flame formed in the burner 20. Then, the combustion exhaust gas after combustion is blown out from the blowout port 72 as warm air.

On the outer surface of the main body 10, an indoor temperature sensor S2 for detecting the indoor temperature is provided. The control device 80 to be described later controls the operating state of the burner 20 and the convection fan 40 based on the measurement result of the indoor temperature sensor S2.
The main body 10 is provided with a main body temperature sensor S3 that measures the internal temperature. For example, the control device 80 has a temperature measured by the main body temperature sensor S3 reaching an abnormally high temperature range. In this case, control such as stopping the burner 20 is performed.
Further, the circuit constituting the control device 80 and the like is provided with a circuit temperature fuse S1 that disconnects the circuit when the temperature of the circuit becomes a predetermined temperature or higher. Thereby, when the temperature which the circuit can withstand is exceeded, the circuit is protected by disconnecting the circuit.

[Driving operation reception part]
On the top surface of the main body 10, a driving operation reception unit 50 that receives operation control of the driving state is provided. As the operation switch operated by the user or the like, the operation switch 61 for switching between the operation state and the operation stop state, the target temperature, and the good morning timer operation start time are set in the operation operation receiving unit 50 as shown in FIG. Temperature setting / time setting switch 60, energy saving switch 58 for switching between an energy saving operation state and a non-energy saving operation state in heating operation, a good night timer switch 56 that can be set to stop operation after a predetermined time has elapsed, and operation start after a predetermined time has elapsed A good morning timer switch 57 and the like which can be set are provided.
Furthermore, in the said driving operation reception part 50, as a display part which shows the state of the heating apparatus 100, the operation display lamp 55 which shows an operation state, the air filter cleaning lamp 54 which turns on when dust accumulates in the air filter 71, It is possible to display the energy saving lamp 53 that lights up in the energy saving operation state, the setting display lamps 51 and 52 indicating that the good night timer and the good morning timer are set, the current temperature, the set temperature, the set time, and the error number. A 7-segment display unit 59 and the like are provided.

〔Control device〕
As shown in FIG. 3, the control device 80 is electrically connected to each operation switch and each display unit of the driving operation reception unit 50, and an operation state is displayed on each display unit based on the operation of each operation switch. Is displayed. In addition, since control, such as lighting / flashing to each display part by the control device 80 when operating the above various switches, is not different from ordinary heating equipment, the detailed description thereof will be omitted below and characteristic Only the detailed control will be described.
When the operation switch 61 is operated to switch the heating device 100 from the operation stop state to the operation state, the control device 80 opens the first electromagnetic valve 26a and the second electromagnetic valve 26b and opens the proportional valve 25 to a predetermined open state. The fuel gas G is injected from the injection nozzle 23 into the combustion chamber 22 of the burner 20. At the same time, the motor 42 is driven to operate the convection fan 40, and the combustion air A is guided to the combustion chamber 22. Then, the air-fuel mixture of the fuel gas G and the combustion air A is ignited and burned by the igniter 21. Such operation control of the heating device 100 is not different from the conventional one.

In particular, the control device 80 of the present application is detected by the indoor temperature sensor S2 in order to execute the energy saving operation that is executed when the energy saving switch 58 is pressed in the state where the heating operation described above is being executed. Based on the temperature rise time measuring unit 81 that measures the time until the temperature reaches the set temperature T set by the temperature setting switch 60, and the temperature rise time measured by the temperature rise time measuring unit 81, And a reduction rate adjusting means 82 for adjusting a reduction rate of the control target temperature Tc of the device after the detected temperature reaches the set temperature T.
When the description is added, as shown in FIG. 4, the temperature rise time measurement unit 81 is configured such that when the operation switch 61 is pressed and the heating operation is started, the detected temperature detected by the indoor temperature sensor S2 is the temperature. The temperature rise time t1 until reaching the set temperature T set by the setting switch 60 is measured as the detected temperature rise mode. In this reference form, the room temperature sensor S2 and the temperature rise time measurement unit 81 function as temperature rise form detection means.
The temperature rise time t1 is shorter as the difference between the detected temperature (room temperature) at the start of the heating operation and the set temperature T is smaller. The shorter the temperature rise time t1, the lower the detected temperature in energy saving operation. When the control target temperature Tc is lowered below the set temperature T after the temperature reaches the set temperature T, it is difficult for the user to experience a bad experience (the user is less likely to feel cold).
Therefore, the decrease rate adjusting means 82 controls the device after the detected temperature (room temperature) reaches the set temperature T as the temperature increase time t1 measured by the temperature increase time measurement unit 81 is shorter in the energy saving operation. A decrease rate adjustment process for adjusting the decrease rate of the target temperature Tc to the higher side is executed. Thereby, energy saving can be improved by lowering the control target temperature Tc, while preventing the user's feeling from being impaired (making the user feel cold).

In the present application, adjusting the rate of decrease of the control target temperature Tc to the higher side (increasing the angle α in FIG. 4) means a process until the unit temperature (1 ° C. in FIG. 4) is decreased. This means that the time t2 is shortened.
If a description is added, when the start-up temperature of the device becomes high (in FIG. 4, when the first start-up temperature T01 becomes the third start-up temperature T03), the temperature rise measured by the temperature rise time measuring unit 81 The time is shortened (in FIG. 4, the temperature rise time t1 becomes the temperature rise time t3), and the decreasing rate of the control target temperature Tc is changed to a higher side (changed from the angle α to the angle β in FIG. 4). t2 is shortened.

Further, in the reference form, after the detected temperature (room temperature) reaches the set temperature T, the process of lowering the unit temperature after the elapsed time t2 is executed twice, and the control target of the device The temperature Tc is finally maintained at a temperature 2 ° C. lower than the set temperature T.

A case where the present invention works particularly effectively will be described.
In the state where energy-saving operation is being executed, when the automatic fire extinguishing timer is activated and fire extinguishes automatically, or when the operation switch 61 is accidentally operated and stopped, the operation is resumed immediately after stopping. In this case, the user is sufficiently warmed by the effect of the previous heating operation, and is also warmed by the radiant heat from the indoor wall or the like, so that the control target temperature Tc of the device is higher than the set temperature T. Even if the rate of decrease is reduced, the user's experience is unlikely to be impaired (the user is less likely to feel cold).
Therefore, in the heating device 100 of the present application, the startup temperature of the device is higher than the first startup temperature T01 that is the startup temperature of the normal startup operation, like the second startup temperature T02 shown in FIG. If the detected temperature (room temperature) reaches the set temperature T, the control target temperature Tc of the device after the detected temperature (room temperature) reaches the set temperature T is adjusted to the higher side. The elapsed time t2 until the unit temperature (1 ° C. in the example shown in FIG. 4) is reduced is shortened.
By the way, when the outside air temperature is 5 degrees, when the gas fan heater with a heating capacity of 2.44 kW is operated at a set temperature of 22 ° C. for 6 hours in a wooden 6 tatami room, when the energy saving operation described above is not performed, In comparison, the consumption of the fuel gas G can be reduced by about 10%.

In the energy saving operation described above, the control target temperature Tc of the device is lowered below the set temperature T. However, in order to prevent the user from misidentifying that the device has failed, the 7-segment display unit 59 has The set temperature T is displayed as it is.
Therefore, as described above, when the device is restarted immediately after being stopped for some reason, if the control target temperature Tc of the device is immediately set to a temperature lower than the set temperature T, the detected temperature (room temperature) ) Does not reach the set temperature T, which may cause the user to misunderstand that the device has failed. Therefore, in the present application, as described above, even when the device is restarted immediately after being stopped for some reason, the control of the device is performed until the detected temperature (room temperature) reaches the set temperature T. The target temperature Tc is maintained at the set temperature T.

Further, when the set temperature T is quite low, such as 15 ° C., for example, the heating operation is started, and the temperature rise time t1 until the detected temperature (room temperature) reaches the set temperature T is shortened. When the rate adjusting means 82 adjusts the rate of decrease of the control target temperature Tc to the higher side based on the temperature rise time t1, the control target temperature Tc of the device is not felt even though the user does not feel that it is sufficiently warm. Since the rate of decrease of the image quality becomes high, there is a risk of impairing the user's experience (making the user feel cold).
Therefore, the decrease rate adjusting means 82 is set when the set temperature T is set to a value lower than a decrease rate adjustment process lower limit threshold (for example, 15 ° C.) that is determined in advance and stored in a storage unit (not shown) or the like. The decrease rate adjustment process is not executed.
That is, when the energy saving operation is performed in a state where the set temperature T is set to a value lower than the lowering threshold value adjustment process lower limit threshold, after the detected temperature (room temperature) reaches the set temperature T, The elapsed time t2 is set to the longest elapsed time (for example, 30 minutes) set in advance as a specified value.

  Next, in order to explain the specific control of the reduction rate adjustment process, the flow of control related to the heating operation of the heating device 100 will be described based on FIG. 5, and the control in the energy saving operation will be described based on FIG. A control flow of the reduction rate adjustment process related to the reduction rate of the target temperature Tc will be described.

[Heating operation]
When the operation switch 61 is pressed by the driving operation reception unit 50 while the heating device 100 is stopped (# 101), the control device 80 opens the first electromagnetic valve 26a and the second electromagnetic valve 26b. The proportional valve 25 is opened, and the mixture of the fuel gas G and the combustion air A is supplied to the burner 20, and the mixture is ignited by the igniter 21, and the motor 42 of the convection fan 40 is operated to heat the mixture. Operation is started (# 102).
The control device 80 confirms the detection result by the flame sensor S5 in order to confirm that the burner 20 has not disappeared. If the extinction has occurred, the controller 80 stops the heating operation and 7 segments. “11”, which is the error number of the “blank error”, is displayed on the display unit 59, and when the vanishing has not occurred, the heating operation is maintained and the operation display lamp 55 is lit (# 103, # 104). , # 105).
When the heating operation is started normally, the temperature rise time measuring unit 81 measures the time until the detected temperature (room temperature) reaches the set temperature T (# 106, # 107).

  When the energy saving switch 58 is ON after the detected temperature (room temperature) reaches the set temperature T, the control device 80 executes a lowering rate adjustment process, which will be described later, and performs control when the energy saving switch 58 is OFF. Target temperature Tc is maintained at set temperature T (# 108, # 109, # 200).

[Decrease rate adjustment processing]
When the set temperature T is lower than the decrease rate adjustment lower limit threshold value, the controller 80 determines the longest predetermined time t2 to prohibit the decrease rate adjustment process from being executed when the set temperature T is too low. The elapsed time of 30 minutes is set (# 201, # 202).
On the other hand, when the set temperature T is equal to or lower than the decrease rate adjustment lower limit threshold, the decrease rate adjusting means 82 as the control device 80 adjusts the elapsed time t2 based on the temperature increase time t1 measured in # 106 (# 203). ). When the explanation is added, the decrease rate adjusting means 82 sets the elapsed time t2 to be shorter so that the decrease rate of the control target temperature Tc of the device is adjusted to be higher as the temperature increase time t1 is shorter. Here, a description will be added to the relationship between the temperature rise time t1 and the elapsed time t2 indicated by # 203 in the control flow.
When the temperature rise time t1 is 15 minutes or more, the detected temperature (room temperature) at the start of the heating operation is low, and there is a high possibility that the user's sensation will be impaired (the user feels cold), the elapsed time t2 is set to the longest 30 Set to minutes to minimize the rate of decrease of the control target temperature Tc of the device.
When the temperature rise time t1 is 5 minutes or more and less than 15 minutes, the detected temperature (room temperature) at the start of heating operation is relatively low, and the possibility of impairing the user's experience (the user feels cold) is relatively high. In this case, the elapsed time t2 is set to a relatively long 10 minutes to reduce the rate of decrease in the control target temperature Tc of the device.
The temperature rise time t1 is 2 minutes or more and less than 5 minutes, the detected temperature (room temperature) at the start of heating operation is relatively high, and the possibility of impairing the user's experience (the user feels cold) is relatively low In this case, the elapsed time t2 is set to a relatively short 3 minutes to increase the rate of decrease in the control target temperature Tc of the device.
If the temperature rise time t1 is less than 2 minutes, the detected temperature (room temperature) at the start of the heating operation is high, and the possibility of impairing the user's sensation (the user feels cold) is sufficiently low, the elapsed time t2 is set to 0 minute Set to. In this case, the control target temperature Tc of the device is set to “set temperature T−2 ° C.” that is the target lower limit temperature of the energy saving operation immediately after the detected temperature (room temperature) reaches the set temperature T. It becomes.

The decrease rate adjusting means 82 sets the control target temperature Tc to “set temperature T−1 ° C.” when the elapsed time t2 set as described above has elapsed after the detected temperature (room temperature) reaches the set temperature T. Thereafter, when the elapsed time t2 has elapsed (# 204, # 205), the control target temperature Tc is set to “set temperature T−2 ° C.” (# 208, # 209).
That is, the decrease rate adjusting means 82 decreases the control target temperature Tc by the unit temperature (1 ° C. in the control) for each elapsed time t2, and finally the target lower limit temperature of “the set temperature T−2 ° C.” To lower.

  When the energy saving switch 58 is pressed during the reduction rate adjustment process and the energy saving operation is stopped, the control device 80 controls the control target temperature Tc to shift from the energy saving operation to the normal heating operation. Is maintained at the set temperature T (# 206, # 207, # 210, # 211).

  When the operation switch 61 is pressed during the reduction rate adjustment process (# 212) or the automatic fire extinguishing timer is activated (# 214), the control device 80 stops the energy saving operation and the heating operation. (# 213, # 215).

[Implementation Embodiment
Above Symbol Reference Embodiment, reduction ratio adjusting means 82, the reduction ratio adjusting processing, based on the temperature rise time t1, there is shown an example of adjusting the elapsed time t2, the reduction rate adjusting unit 82 according to the embodiment, as shown in FIG. 7, on the basis of other indicators, adjust the elapsed time t2.
As an example of another index, the rate of increase in the detected temperature (room temperature) per unit time at the start of heating operation can be employed.
That is, the control device 80 obtains the rate of increase of the detected temperature (room temperature) per unit time at the start of the heating operation based on the temperature detected by the room temperature sensor S2, and the detected temperature is set as the rate of increase is smaller. The rate of decrease per unit time of the control target temperature Tc after reaching the temperature T is adjusted to the higher side.
When the explanation is added based on FIG. 7, when the slope of the temperature rise at the start of the heating operation is relatively large (β in FIG. 7), the room temperature (first start temperature T01 in FIG. 7) is low, and thereafter In the decrease rate adjustment process, the control device 80 sets the elapsed time t2 to be relatively long because there is a high possibility of impairing the user's experience (making the user feel cold). On the other hand, when the slope of the temperature rise at the start of the heating operation is relatively small (γ in FIG. 7), the room temperature (second start-up time T02 in FIG. 7) is high, and in the subsequent reduction rate adjustment processing, the user Therefore, the control device 80 sets the elapsed time t2 to be relatively short.

[Another embodiment]
( 1 ) In the above reference mode, in the energy saving operation, the control target of the device after the detected temperature (room temperature) reaches the set temperature T as the temperature rise time t1 measured by the temperature rise time measuring unit 81 is shorter. An example of executing control to lower the control target temperature Tc by 1 ° C. unit temperature every elapsed time t2 when adjusting the decrease rate of the temperature Tc to a higher side (increasing the angle α in FIG. 4). Indicated.
However, the unit temperature may be a unit smaller than 1 ° C. such as 0.5 ° C., for example. In this case, the elapsed time t2 is half the time when the unit temperature is set to 1 ° C. Thereby, in the case of changing the control target temperature Tc in the energy saving operation, the temperature decrease width at the temperature decrease timing can be reduced, so that the user's feeling is further impaired (the user feels cold). Can be prevented.

( 2 ) In the above reference embodiment, a fan heater capable of performing heating of the air-conditioning target space is shown as an example of the heating device. However, the heating device of the present application includes a heat pump type air conditioner, and the operation method of the present invention can be satisfactorily implemented also in the air conditioner.

( 3 ) In the above reference mode, the energy saving operation is performed when the energy saving switch 58 is pressed in the case where the heating operation is executed. The heating operation may be started and the energy saving operation may be performed accordingly.

( 4 ) In the above reference embodiment, in the energy saving operation, the example in which the control target temperature of the device is once lowered to the set temperature by 2 ° C. after reaching the set temperature.
However, in the heating device of the present application, the control target temperature of the device may be configured to be lowered to a temperature lower than the set temperature by 2 ° C., and the user may set how much the temperature is lowered. You may comprise.

  INDUSTRIAL APPLICABILITY The heating device and the operation method thereof according to the present invention can be effectively used as a heating device and an operation method thereof that can further improve energy saving while appropriately preventing the user's feeling from being impaired.

DESCRIPTION OF SYMBOLS 10: Main body 20: Burner 60: Temperature / time setting switch 80: Control apparatus 81: Temperature rise time measurement part 82: Decrease rate adjustment means 100: Heating equipment S2: Indoor temperature sensor

Claims (4)

A temperature detecting means for detecting the temperature in the room, a setting unit for setting a set temperature to be the heating target temperature,
In energy-saving operation in which the energy consumption is lower than that of the heating operation in which the detected temperature detected by the temperature detecting means is raised to the set temperature and maintained, the device control is performed after the detected temperature reaches the set temperature. In the heating equipment provided with the reduction rate adjusting means for lowering the target temperature below the set temperature with the operation time of the equipment,
Comprising a temperature change form detecting means for detecting a rising form of the detected temperature from the start of the heating operation until the detected temperature reaches the set temperature;
The temperature change mode detection means detects a rate of increase per unit time of the detected temperature at the start of the heating operation as the detected temperature rise mode,
The decrease rate adjusting means is configured to calculate a decrease rate per time of the control target temperature after the detected temperature has reached the set temperature based on the detected temperature increase form detected by the temperature change form detecting means. This is to perform the reduction rate adjustment process to be adjusted ,
In the decrease rate adjustment process, the decrease rate adjustment means is a unit time of the control target temperature after the detected temperature has reached the set temperature as the increase rate is small regardless of the temperature at the start of operation. Heating equipment that adjusts the rate of decline at the top to the higher side . In the reduction rate adjustment process, the reduction rate adjustment means,
During the period until the detected temperature reaches the target lower limit temperature determined corresponding to the set temperature, the control target temperature is decreased at a constant decrease rate,
Heating device according to claim 1 after the detected temperature has reached the target lower limit temperature, maintaining said control target temperature to the target lower limit temperature. 3. The decrease rate adjustment unit according to claim 1 , wherein the decrease rate adjustment unit prohibits execution of the decrease rate adjustment process when the set temperature is set to a value lower than a predetermined lower limit threshold value of the decrease rate adjustment process . Heating equipment. In energy-saving operation, which consumes less energy than heating operation, where the detected temperature detected in the room is maintained up to the set temperature, and after the detected temperature reaches the set temperature, the control target temperature of the device is In the operation method of lowering the set temperature with the operation time of
  The rate of increase of the detected temperature per unit time at the start of operation of the heating operation is detected as a form of increase in the detected temperature from the start of operation of the device until the detected temperature reaches the set temperature, and the detection In the decrease rate adjustment process for adjusting the decrease rate per time of the control target temperature after the detected temperature reaches the set temperature based on the temperature increase mode, regardless of the temperature at the start of the operation, The operation method of adjusting the decreasing rate per unit time of the control target temperature after the detected temperature reaches the set temperature to a higher side as the increasing rate is smaller.

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