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CN115406086B - Fresh air quantity control method, device, equipment and storage medium - Google Patents

Fresh air quantity control method, device, equipment and storage medium Download PDF

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Publication number
CN115406086B
CN115406086B CN202211028174.XA CN202211028174A CN115406086B CN 115406086 B CN115406086 B CN 115406086B CN 202211028174 A CN202211028174 A CN 202211028174A CN 115406086 B CN115406086 B CN 115406086B
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China
Prior art keywords
temperature
air
fresh air
exhaust
area
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CN202211028174.XA
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CN115406086A (en
Inventor
刘志文
刘杨
张靖
蔡汝克
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Guangdong Phnix Energy Technology Co ltd
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Guangdong Phnix Energy Technology Co ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/50Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61Control or safety arrangements characterised by user interfaces or communication using timers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The embodiment of the application provides a fresh air volume control method, a device, equipment and a storage medium, which relate to the technical field of fresh air, and the fresh air volume control method comprises the following steps: acquiring an outdoor temperature, and determining an annular temperature operation interval to which the outdoor temperature belongs, wherein the annular temperature operation interval is set according to the heat exchange efficiency of a heat exchange core of the fresh air machine; determining the exhaust quantity of the fresh air machine according to the ring temperature operation interval; acquiring an indoor temperature and determining a room temperature interval to which the indoor temperature belongs; determining the air supply quantity of the fresh air machine according to the room temperature interval and the air discharge quantity; under the condition that the fresh air fan normally operates, the air supply amount is larger than the air exhaust amount, so that the fresh air system is in a micro-positive pressure state. The scheme realizes multi-area control of fresh air volume, improves the energy conservation of the fresh air machine, and provides better use experience of comfort for users.

Description

Fresh air quantity control method, device, equipment and storage medium
Technical Field
The embodiment of the application relates to the technical field of fresh air, in particular to a method, a device, equipment and a storage medium for controlling fresh air quantity.
Background
With the promotion of consumer upgrading of domestic market and national health consciousness, a new fan with ventilation, heat recovery and purification functions is paid attention to and rapidly and widely accepted by people. The fresh air machine has obvious market competitiveness due to the improvement of indoor energy conservation and comfort.
But new fan is at during operation to indoor environment introduction new trend and with indoor partial air discharge, because indoor and outdoor difference in temperature, the new trend of introducing can cause indoor air conditioner or ground heating equipment's load to increase, and in current new fan control scheme, also just according to the current load of air conditioner or ground heating equipment, carries out on-off control to new fan, can't control circulated new wind amount for the user experience is poor in the travelling comfort, and frequent start and stop, very easily reduces new fan's life.
Disclosure of Invention
The embodiment of the application provides a fresh air quantity control method, device, equipment and storage medium, solves the problem that fresh air quantity is difficult to control, realizes multi-region control of fresh air quantity, improves the energy conservation of a fresh air machine, and provides better use experience of comfort for users.
In a first aspect, an embodiment of the present application provides a fresh air volume control method, which is applied to a fresh air system including a fresh air fan, where the fresh air volume control method includes:
Acquiring an outdoor temperature, and determining an annular temperature operation interval to which the outdoor temperature belongs, wherein the annular temperature operation interval is set according to the heat exchange efficiency of a heat exchange core of the fresh air machine;
determining the exhaust quantity of the fresh air machine according to the ring temperature operation interval;
acquiring an indoor temperature and determining a room temperature interval to which the indoor temperature belongs;
Determining the air supply quantity of the fresh air machine according to the room temperature interval and the air discharge quantity;
under the condition that the fresh air fan normally operates, the air supply amount is larger than the air exhaust amount, so that the fresh air system is in a micro-positive pressure state.
In a second aspect, an embodiment of the present application provides a fresh air volume control device, which is applied to a fresh air system including a fresh air fan, where the fresh air volume control device includes:
the first temperature acquisition module is configured to acquire outdoor temperature, determine an annular temperature operation interval to which the outdoor temperature belongs, and set the annular temperature operation interval according to the efficiency of the heat exchange core of the fresh air machine;
the air exhaust quantity determining module is configured to determine the air exhaust quantity of the fresh air machine according to the ring temperature operation interval;
The second temperature acquisition module is configured to acquire the indoor temperature and determine a room temperature interval to which the indoor temperature belongs;
The air supply quantity determining module is configured to determine the air supply quantity of the fresh air machine according to the room temperature interval and the air exhaust quantity;
under the condition that the fresh air fan normally operates, the air supply amount is larger than the air exhaust amount, so that the fresh air system is in a micro-positive pressure state.
In a third aspect, an embodiment of the present application provides a fresh air volume control apparatus, including:
one or more processors;
storage means for storing one or more programs,
When one or more programs are executed by one or more processors, the one or more processors realize the fresh air volume control method of the embodiment of the application.
In a fourth aspect, the embodiment of the present application further provides a storage medium storing computer executable instructions, where the computer executable instructions are used to execute the fresh air volume control method according to the embodiment of the present application when executed by a processor.
According to the embodiment of the application, a plurality of ring temperature operation intervals are arranged for the outdoor temperature, the corresponding exhaust air quantity is determined by determining the ring temperature operation interval in which the outdoor temperature is positioned, and the room temperature interval corresponding to the indoor temperature is also determined, so that the air supply quantity is determined, the control and adjustment of the fresh air quantity are realized, the comfort and the energy conservation are improved, the service life of the heat exchange core is prolonged, and the use experience with better comfort is provided for users.
Drawings
FIG. 1 is a flow chart of a fresh air volume control method according to an embodiment of the present application;
FIG. 2 is a flow chart of a method for controlling fresh air volume according to another embodiment of the present application;
FIG. 3 is a flowchart of a method for controlling fresh air volume according to another embodiment of the present application;
fig. 4 is a schematic structural diagram of a fresh air volume control device according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of fresh air volume control equipment according to an embodiment of the present application.
Detailed Description
Embodiments of the present application will be described in further detail below with reference to the drawings and examples. It should be understood that the particular embodiments described herein are illustrative only and are not limiting of embodiments of the application. It should be further noted that, for convenience of description, only some, but not all of the structures related to the embodiments of the present application are shown in the drawings.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. In the description of the present application, a plurality means two or more, and a plurality means one or more.
The fresh air volume control method, the device, the equipment and the storage medium can be applied to a fresh air system, a fresh air fan is arranged in the fresh air system, and the fresh air fan comprises a fresh air motor, an exhaust motor, an air inlet, an air return opening, an air supply opening, an air outlet, a filter screen and a heat exchange core. It is conceivable that outdoor fresh air enters an air duct inside the fresh air fan from the air inlet, outdoor impurities (such as PM2.5 and the like) are filtered through the filter screen, heat exchange is performed through the heat exchange core, finally, heat recovered and purified air is sent into a room from the air supply outlet, indoor dirty air passes through the air return opening, indoor impurities are filtered through the front section filter screen, heat exchange is performed between the indoor dirty air and the outdoor fresh air through the heat exchange core, and finally, the dirty air is discharged out of the room through the air outlet.
The heat exchange core realizes effective heat recovery, and circulating air must pass through a plurality of heat exchange channels to complete heat exchange, and the heat exchange process is accompanied by air flow resistance, and the air flow resistance also increases along with the increase of air quantity, so that the motor rotation speed and the running power increase.
It is conceivable that the fresh air system is usually used in combination with indoor temperature adjusting devices (such as air conditioners, floor warmers, etc.), so that comfortable indoor temperature is provided for users, and outdoor fresh air can be introduced at the same time, so that the use experience of users is improved.
Fig. 1 is a flowchart of a fresh air volume control method according to an embodiment of the present application, where the fresh air volume control method is executed by a computing device, and the computing device is used as a control device in a fresh air system and is used for controlling the volume of air of a fresh air fan, and the computing device may be used as an independent device and may be disposed in the fresh air system or may be integrally disposed with the fresh air fan. As shown in the figure, the fresh air volume control method comprises the following steps:
Step S110, acquiring the outdoor temperature and determining a ring temperature operation interval to which the outdoor temperature belongs.
The fresh air can be pre-cooled or preheated by the heat exchange core and then is led into the room, namely, the temperature difference exists between the indoor and the outdoor, so that the fresh air can be cooled or heated by the indoor air entering through the return air inlet. The efficiency (such as heat exchange efficiency) of the heat exchange core of each new fan has an influence on the air supply temperature, such as the higher the efficiency is, the closer the air supply temperature is to the indoor temperature, therefore, the initial temperature of the ring temperature operation interval can be adjusted according to the efficiency of the heat exchange core of different new fans, namely, the ring temperature operation interval is set according to the efficiency of the heat exchange core of the new fan. The starting temperature of the ring temperature operating interval corresponds to one outdoor temperature, i.e. for any outdoor temperature it should fall into one of the ring temperature operating intervals.
And step S120, determining the exhaust air quantity of the fresh air machine according to the ring temperature operation interval.
Different exhaust speeds are set corresponding to different ring temperature operation intervals. When the temperature interval to which the outdoor temperature belongs is determined, the corresponding air discharge amount of the fresh air machine can be determined, and it is conceivable that the air discharge amount is the air flow amount in unit time and the calculation unit is cubic meters per second, so that the air discharge amount is the air discharge amount of the fresh air machine in unit time, and the air discharge amount can be adjusted by controlling the rotating speed of an air discharge motor of the fresh air machine. Similarly, for the air supply quantity, the air supply quantity is the air quantity which is sent by the fresh air fan in unit time, and the air supply quantity can be adjusted by controlling the rotating speed of the fresh air motor of the fresh air fan.
For example, the outdoor temperature is divided into a low temperature freezing zone, a low temperature freeze prevention zone, a low temperature zone, a heat recovery zone, a high temperature pre-protection zone, and a high temperature protection zone from low to high. The low-temperature freezing zone, the low-temperature freezing prevention zone, the low-temperature zone, the heat recovery zone, the high-temperature pre-protection zone and the high-temperature protection zone are all ring temperature operation zones and respectively correspond to a temperature range, exhaust air quantity is correspondingly preset in each ring temperature operation zone, and when the obtained outdoor temperature is located in any one of the ring temperature operation zones, the fresh air machine is controlled to exhaust air with the corresponding exhaust air quantity.
And step S130, acquiring the indoor temperature and determining a room temperature interval to which the indoor temperature belongs.
Under the condition that fresh air is introduced into a room, the indoor temperature can be increased or reduced due to the temperature difference between the indoor and the outdoor and the heat exchange efficiency of the heat exchange core, and for the indoor temperature provided with temperature regulating equipment, the influence of the fresh air can be eliminated by the temperature regulating equipment, but the power consumption of the temperature regulating equipment can be increased; and for indoor temperature regulation equipment which is not arranged, the indoor temperature changes along with the continuous entering of fresh air, so that the comfort level of a user is affected. Therefore, it is necessary to acquire the indoor temperature, and a plurality of room temperature sections are also set in advance for the indoor temperature in the present application, and it is conceivable that the indoor temperature is divided into a plurality of room temperature sections from low to high.
And step 140, determining the air supply quantity of the fresh air machine according to the room temperature interval and the air supply quantity.
After the current outdoor temperature and the indoor temperature are obtained, the ring temperature operation interval to which the current outdoor temperature and the current indoor temperature belong can be determined according to the outdoor temperature, and then the air discharge quantity is determined; also, the room temperature section to which it belongs can be determined based on the room temperature. Therefore, the air supply amount of the fresh air machine can also be determined, for example, under the condition that the air exhaust amount is determined, different room temperature intervals correspond to different air supply strategies, so that the fresh air machine is controlled to supply air with different air supply amounts. Moreover, under the condition that the fresh air fan normally operates, namely, the fresh air fan is not stopped, and the air exhaust amount is not 0, the air supply amount is larger than the air exhaust amount, so that the fresh air system is in a micro-positive pressure state, and therefore, purified air entering the room is more than polluted air outside the room to be exhausted, the air quality in the indoor environment is better, and the comfort experience of a user is improved.
It is contemplated that the acquisition of outdoor and indoor temperatures may be detected by a temperature detection device such as a temperature sensor or a five-in-one environmental sensor (a sensor that detects temperature, humidity, barometric pressure, illumination intensity, and ultraviolet intensity) and calculated by a computing device.
In some embodiments, after the room temperature interval and the air exhaust amount have been determined, the corresponding air supply amount may also be determined, for example, the fresh air machine is controlled to supply air with a first air supply amount, where the ratio of the first air supply amount to the air exhaust amount is a first preset parameter, that is, in the case that the air exhaust amount of the fresh air machine is not 0, the air supply amount and the air exhaust amount are in a multiple relationship, where the multiple is the first preset parameter, and it is conceivable that the first preset parameter is greater than 1, that is, the air supply amount is greater than the air exhaust amount, and the fresh air system still maintains the micro-positive pressure state.
In special cases, the fresh air fan needs to stop air supply, for example, when the air discharge amount is 0, that is, the outdoor temperature is located in a low-temperature freezing area or a high-temperature protection area, the fresh air fan stops air discharge, and it can be understood that when the outdoor temperature is located in the low-temperature freezing area, if air discharge is still performed, the heat exchange core has freezing risk; and when outdoor temperature is located high temperature protection zone, if still exhaust, the temperature of the air that gets into indoor is higher, can lead to the consumption promotion of air conditioner under the indoor condition that is provided with the air conditioner, and can influence user's comfort level under the condition to not setting up the air conditioner. When the air discharge quantity is 0, the fresh air fan can be controlled to stop exhausting.
In addition, for the condition that the indoor temperature is in a preset excessively low room temperature interval and the outdoor temperature is less than 0 ℃, the fresh air machine is controlled to stop supplying air. It can be understood that, for the preset excessively low room temperature interval, a plurality of room temperature intervals can be included, and in the setting process of the fresh air machine, a plurality of room temperature intervals divided from low to high in sequence can be selected, for example, a plurality of continuous room temperature intervals are selected from the room temperature interval with the lowest room temperature as the excessively low room temperature interval.
For example, the indoor temperature T1 is divided into 5 room temperature sections, and the temperature threshold value of each section is 4 ℃, 12 ℃, 18 ℃ and 28 ℃, and correspondingly, the room temperature sections I (T1 <4 ℃), room temperature section II (4 ℃ < = T1<12 ℃), room temperature section III (12 ℃ < = T1<18 ℃), room temperature section IV (18 ℃ < = T1<28 ℃) and room temperature section V (T1 >28 ℃) are divided, so that the room temperature section I and the room temperature section II can be selected as preset excessively low room temperature sections. And when the current outdoor temperature is less than 0 ℃, the fresh air fan stops supplying air so as to avoid freezing of the heat exchange core.
When the indoor temperature is in a preset intermittent operation interval and the outdoor temperature is in a low-temperature freezing prevention area or a low-temperature area, the fresh air machine is controlled to intermittently supply air with different air volumes. Similarly, for the preset intermittent operation interval, a plurality of room temperature intervals may be included, for example, room temperature interval III is selected as the preset intermittent operation interval, when the outdoor temperature is in the low-temperature freezing prevention area or the low-temperature area, the air supply amount of the fresh air machine is intermittently supplied with different air amounts, that is, the first air amount is operated in a first operation duration, the second air amount is operated in a second operation duration, and the operation duration of supplying the air amounts can be flexibly adjusted.
According to the scheme, the fresh air volume control method can effectively adjust the air volume according to the indoor and outdoor temperatures so as to control the fresh air volume of the outdoor fresh air passing through the heat exchange core, improve the comfort and the energy conservation, and simultaneously improve the service life of the heat exchange core. The scheme of the application realizes multi-area control of fresh air volume, improves the energy conservation of the fresh air machine, and provides a user with better use experience of comfort.
In some embodiments, the exhaust air volume for each of the ring temperature operation intervals needs to be determined according to the ring temperature operation interval to which the current outdoor temperature belongs. It is noted that the ring temperature operation zone to which the outdoor temperature belongs may be any one of a low temperature freezing zone, a low temperature freeze prevention zone, a low temperature zone, a heat recovery zone, a high temperature pre-protection zone, and a high temperature protection zone, which are divided in order from low temperature to high temperature.
When the outdoor temperature is in the low-temperature freezing area or the high-temperature protection area, the fresh air fan is controlled to stop exhausting air, namely the air quantity is 0; when the outdoor temperature is in the low-temperature freezing prevention area or the high-temperature pre-protection area, the fresh air machine is controlled to exhaust air with the minimum running air quantity; when the outdoor temperature is in a low temperature area, the fresh air machine is controlled to exhaust air with a first variable air volume; when the outdoor temperature is located in the heat recovery area, controlling the fresh air fan to exhaust air with the maximum running air quantity; when the outdoor temperature is in a high temperature area, the fresh air machine is controlled to exhaust air with the second variable air volume. It should be noted that, the maximum operation air volume and the minimum operation air volume are preset air volume values, and do not represent the extremum of the air volume that can be provided by the fresh air machine.
The first variable air volume and the second variable air volume are positioned between the minimum operation air volume and the maximum operation air volume, the temperature value of the first variable air volume and the temperature value of the low temperature area meet a first linear relation, and the temperature value of the second variable air volume and the temperature value of the high temperature area meet a second linear relation. The first variable air volume in the first linear relation increases with the temperature, and the second variable air volume in the second linear relation decreases with the temperature.
For example, for the outdoor temperature T2, the outdoor temperature may be divided into a plurality of ring temperature operation intervals, such as a low temperature freezing zone (t2 < = -20 ℃) a low temperature prevention freezing zone (-20 ℃) a low temperature zone (-15 ℃) a low temperature zone (-T2 < = -5 ℃) a heat recovery zone (-5 ℃) a high temperature zone (35 ℃) a low temperature zone (t2 < = 35 ℃) a high temperature zone (35 ℃) a high temperature pre-protection zone (43 ℃) a high temperature protection zone (43 ℃) a low temperature zone (t2= 46 ℃) and a high temperature protection zone (t2 > -46 ℃) as well. In the process that the outdoor temperature T2 is increased from the low-temperature freezing zone to the high-temperature protection zone, the exhaust air quantity of the fresh air machine is converted from 0 to the minimum operation air quantity (the outdoor temperature enters the low-temperature freezing prevention zone), and then the fresh air machine is gradually increased from the minimum operation air quantity (the outdoor temperature enters the low-temperature zone) along with the temperature increase; in the heat recovery area, the fresh air fan exhausts air with the maximum running air quantity; when the outdoor temperature is continuously increased, the exhaust air quantity of the fresh air machine is gradually reduced from the maximum operation air quantity (the outdoor temperature enters a high temperature zone); when the outdoor temperature falls into a high-temperature pre-protection area, the fresh air machine exhausts air with the minimum running air quantity; if the outdoor temperature is continuously increased, the air exhaust of the fresh air machine is stopped (the outdoor temperature enters a high-temperature protection zone).
Therefore, by setting different air discharge amounts, the fresh air machine discharges air in different air discharge amounts in the ring temperature operation intervals corresponding to different outdoor temperatures, so that the air discharge amount control of the fresh air machine in multiple intervals is realized, and the freezing risk of the heat exchange core is reduced.
In some embodiments, for intermittently supplying air at different air volumes, the amount of supply air may also be controlled according to the change in the exhaust air temperature. As shown in fig. 2, the specific steps are as follows:
step S210, acquiring and recording a first exhaust temperature of the fresh air machine when the fresh air machine operates in an intermittent operation interval.
Step S220, after the fresh air fan runs for a preset time with the first air supply amount, the second exhaust temperature is obtained.
And step S230, controlling the fresh air machine to supply air with the second air supply amount when the second air exhaust temperature is smaller than the first air exhaust temperature.
When the indoor temperature is located in an intermittent operation interval and the outdoor temperature is located in a low-temperature freezing prevention area or a low-temperature area, correspondingly, acquiring the current exhaust air temperature, recording the current exhaust air temperature as a first exhaust air temperature, and controlling the fresh air machine to supply air with a first air supply amount. After the fresh air machine runs for a preset time with the first air supply quantity, the current air exhaust temperature needs to be acquired and used as a second air exhaust temperature, if the second air exhaust temperature is smaller than the first air exhaust temperature, the fresh air machine is controlled to supply air with the second air supply quantity, wherein the ratio of the second air supply quantity to the corresponding air exhaust quantity is a second preset parameter, and the second air supply quantity is smaller than the first air supply quantity, namely, the second preset parameter is smaller than the first preset parameter.
It should be noted that, the control of the air volume may be performed continuously, that is, the second air exhaust temperature obtained after the current fresh air fan operates for a preset time is greater than or equal to the first air exhaust temperature, and correspondingly, the air exhaust temperature obtained after the current fresh air fan operates for the preset time is taken as the second air exhaust temperature, and then the judgment is performed to adjust the air volume.
It can be understood that during the process of continuously supplying air into the room, the supplied air will affect the indoor temperature, such as raise or lower, for example, when the outdoor temperature is in the low temperature freezing prevention area or the low temperature area, the temperature of the discharged air decreases after heat exchange with the supplied air, so that the indoor temperature decreases continuously, the exhaust temperature also decreases continuously, the freezing risk of the heat exchange core increases continuously, and the user experience of the comfort of the fresh air ventilator also decreases; as for the temperature adjusting device, since it is necessary to maintain the indoor temperature, power consumption of the temperature adjusting device is also increasing.
Therefore, through the detection to the temperature of airing exhaust, under the condition of temperature variation of airing exhaust, control fresh air machine adjusts the air supply volume, if under the condition of temperature decline of airing exhaust, control fresh air machine reduces the air supply volume to play and prevent that the heat exchange core freezes, and can also play energy-conserving effect.
In some embodiments, the mode of operation of the fresh air machine is adjustable, such as by a remote control, control switch, or the like. For different operation modes, different air volume conversion coefficients can be set, and the air volume conversion coefficients are used for determining the air volume discharged in the current operation mode, so as to determine the air volume.
As shown in fig. 3, the specific steps include:
Step S310, receiving the mode switching information, and determining the operation mode of the fresh air fan according to the mode switching information, wherein different operation modes correspond to different air volume conversion coefficients.
Step S320, according to the air volume conversion coefficient and the ring temperature operation interval, the air volume is determined.
The mode switching information is used for indicating the new fan to switch the operation modes, taking a remote controller as an example, a user can select different operation modes through keys on the touch remote controller, so that a signal carrying the mode switching information is sent through the remote controller, after the current signal is received by the computing equipment, the operation mode of the new fan to be switched currently can be determined through analysis of the signal, and accordingly the corresponding air volume conversion coefficient is determined.
In addition, the exhaust air quantity is different according to different operation modes. The exhaust air volume needs to be determined according to the current air volume conversion coefficient and the ring temperature operation interval.
The ring temperature operation region corresponding to the current outdoor temperature corresponds to a heat recovery region, and the fresh air machine is controlled to exhaust air at a first target air quantity; and when the annular temperature operation region is a low temperature region or a high temperature region, the fresh air fan is controlled to exhaust air at the second target air quantity. The first target air volume is the product of the maximum operation air volume and the air volume conversion coefficient corresponding to the current operation mode, the second target air volume is smaller than the first target air volume, and the second target air volume and the temperature value of the low temperature area or the high temperature area meet the linear relation, for example, the second target air volume rises along with the rising of the temperature in the low temperature area; in the high temperature region, the second target air volume decreases as the temperature increases.
For example, for some operation modes, such as the first operation mode and the second operation mode, the air volume conversion coefficients corresponding to the two operation modes are different, so that the air volume discharged in the first operation mode is different from the air volume discharged in the second operation mode, and further the air volume supplied by the two operation modes is also different. For example, if the air volume conversion coefficient u1=0.5 in the first operation mode, the corresponding first target air volume q1=u1×qmax, qmax is the maximum operation air volume; and the second target air volume q2=u1 (k×tw+b) (corresponding to the outdoor temperature of the low temperature region) or U1 (-k×tw+b) (corresponding to the outdoor temperature of the high temperature region), where tw is the outdoor temperature, and k and b are fixed values. Similarly, the air volume conversion coefficient may be replaced with u2=0.6 for the air volume discharged in the second operation mode. It should be noted that the first operation mode may be an away-from-home mode, the second operation mode may be a sleep mode, and the air volume conversion coefficients of the operation modes may be preset in the control device.
According to the scheme, different air volume conversion coefficients are configured for different operation modes, so that in different ring temperature operation intervals, the fresh air machine exhausts air by the product of the air volume conversion coefficient corresponding to the current operation mode and the air volume corresponding to the ring temperature operation interval, the fresh air requirement of a user in different operation modes is met, and more comfortable use experience is provided for the user.
In some embodiments, for a preset operation mode, when a mode switching signal corresponding to the preset operation mode is received, the exhaust air temperature needs to be detected to obtain the current exhaust air temperature. Further, the outdoor temperature is detected to determine the corresponding exhaust air amount. It is conceivable that the predetermined operating mode likewise corresponds to an air quantity conversion factor.
After the outdoor temperature is obtained, determining a current outdoor temperature-related ring temperature operation interval, and if the current ring temperature operation interval is a temperature prevention freezing area, a high temperature pre-protection area, a low temperature area or a high temperature area and the exhaust temperature is higher than the preset freezing temperature, controlling the fresh air machine to exhaust air at a third target air quantity, wherein the third target air quantity is the product of the maximum operation air quantity and an air quantity conversion coefficient.
It can be understood that the preset freezing temperature is the freezing temperature of the heat exchange core, when the exhaust temperature is higher than the freezing temperature, the heat exchange core has no freezing risk, and at the moment, the fresh air machine can be controlled to exhaust air with larger air quantity, and the air quantity of the fresh air machine is improved.
The third target air quantity is larger than the first target air quantity, and the air quantity conversion coefficient corresponding to the preset operation mode can be a numerical value larger than 1, so that the third target air quantity is larger than the maximum operation air quantity, and further the air quantity is also larger, fresh air entering the room is increased, more air subjected to heat recovery and purification is provided for a user, a more comfortable environment is provided for the user, and the use experience of the user is improved.
Fig. 4 is a schematic structural diagram of a fresh air volume control device according to an embodiment of the present application, where the device is configured to execute the fresh air volume control method provided in the foregoing embodiment, and has corresponding functional modules and beneficial effects of the execution method, and as shown in the drawing, the fresh air volume control device specifically includes: a first temperature acquisition module 401, an exhaust air amount determination module 402, a second temperature acquisition module 403, and an air supply amount determination module 404.
A first temperature acquisition module 401 configured to acquire an outdoor temperature, determine an annular temperature operation interval to which the outdoor temperature belongs, and set the annular temperature operation interval according to the efficiency of the heat exchange core of the fresh air machine;
the air exhaust quantity determining module 402 is configured to determine the air exhaust quantity of the fresh air machine according to the ring temperature operation interval;
a second temperature acquisition module 403 configured to acquire an indoor temperature and determine a room temperature interval to which the indoor temperature belongs;
the air supply quantity determining module 403 is configured to determine the air supply quantity of the fresh air machine according to the room temperature interval and the air exhaust quantity;
under the condition that the fresh air fan normally operates, the air supply amount is larger than the air exhaust amount, so that the fresh air system is in a micro-positive pressure state.
On the basis of the embodiment, the outdoor temperature is divided into a low-temperature freezing area, a low-temperature freezing prevention area, a low-temperature area, a heat recovery area, a high-temperature pre-protection area and a high-temperature protection area from low to high in sequence; correspondingly, the exhaust volume determination module 402 is further configured to:
Correspondingly, according to the ring temperature operation interval, the exhaust air quantity of the fresh air machine is determined, and the method comprises the following steps:
when the outdoor temperature is in the low-temperature freezing area or the high-temperature protection area, the fresh air machine is controlled to stop exhausting air;
When the outdoor temperature is in the low-temperature freezing prevention area or the high-temperature pre-protection area, the fresh air machine is controlled to exhaust air with the minimum running air quantity;
When the outdoor temperature is in a low-temperature area, controlling the fresh air machine to exhaust air at a first variable air volume, wherein the temperature value of the first variable air volume and the temperature value of the low-temperature area meet a first linear relation;
when the outdoor temperature is in the heat recovery area, controlling the fresh air fan to exhaust air with the maximum running air quantity;
when the outdoor temperature is in the high temperature area, the fresh air machine is controlled to exhaust air with a second variable air volume, and the temperature value of the second variable air volume and the temperature value of the high temperature area meet a second linear relation.
On the basis of the above embodiment, the air supply amount determination module 403 is further configured to:
controlling the fresh air machine to supply air with a first air supply quantity, wherein the ratio of the first air supply quantity to the air discharge quantity is a first preset parameter;
when the indoor temperature is in a preset excessively low room temperature interval and the outdoor temperature is less than 0 ℃, controlling the fresh air blower to stop supplying air;
when the indoor temperature is in a preset intermittent operation interval and the outdoor temperature is in a low-temperature freezing prevention area or a low-temperature area, the fresh air machine is controlled to intermittently supply air with different air volumes.
On the basis of the above embodiment, the air supply amount determination module 403 is further configured to:
acquiring and recording a first exhaust temperature of the fresh air machine when the fresh air machine operates in an intermittent operation interval;
after the fresh air fan runs for a preset time with the first air supply quantity, acquiring a second exhaust temperature;
When the second exhaust temperature is smaller than the first exhaust temperature, the fresh air machine is controlled to supply air with a second air supply quantity, the ratio of the second air supply quantity to the exhaust air quantity is a second preset parameter, and the second air supply quantity is smaller than the first air supply quantity.
On the basis of the above embodiment, the exhaust amount determination module 402 is further configured to:
receiving mode switching information, determining the operation mode of the fresh air fan according to the mode switching information, wherein different operation modes correspond to different air volume conversion coefficients;
and determining the exhaust air quantity according to the air quantity conversion coefficient and the ring temperature operation interval.
On the basis of the above embodiment, the exhaust amount determination module 402 is further configured to:
Determining a current ring temperature operation interval according to the outdoor temperature;
if the ring temperature operation region is a heat recovery region, controlling the fresh air machine to exhaust air with a first target air quantity, wherein the first target air quantity is the product of the maximum operation air quantity and an air quantity conversion coefficient corresponding to the current operation mode;
If the annular temperature operation region is a low temperature region or a high temperature region, the fresh air machine is controlled to exhaust air with a second target air quantity, the temperature value of the second target air quantity and the temperature value of the low temperature region or the temperature value of the high temperature region meet a linear relation, and the second target air quantity is smaller than or equal to the first target air quantity.
On the basis of the above embodiment, the exhaust amount determination module 402 is further configured to:
when receiving mode switching information corresponding to a preset operation mode, acquiring the exhaust temperature of the fresh air machine;
If the ring temperature operation region is a low temperature pre-freezing region, a high temperature pre-protection region, a low temperature region or a high temperature region, and the exhaust temperature is higher than the preset freezing temperature, the fresh air machine is controlled to exhaust air with a third target air quantity, and the third target air quantity is the product of the maximum operation air quantity and an air quantity conversion coefficient corresponding to a preset operation mode.
It should be noted that, in the embodiment of the fresh air volume control device, each unit and module included are only divided according to the functional logic, but not limited to the above division, so long as the corresponding functions can be realized; in addition, the specific names of the functional units are also only for distinguishing from each other, and are not used to limit the protection scope of the present application.
Fig. 5 is a schematic structural diagram of a fresh air volume control device according to an embodiment of the present application, where the device may be used to execute the fresh air volume control method provided in the foregoing embodiment, and has functional modules and beneficial effects corresponding to the execution method, and as shown in the drawing, the device includes a processor 501, a memory 502, an input device 503, and an output device 504, where the number of processors 501 in the device may be one or more, and in the drawing, one processor 501 is taken as an example; the processor 501, memory 502, input means 503 and output means 504 in the device may be connected by a bus or other means, in the figure by way of example. The memory 502 is used as a computer readable storage medium for storing software programs, computer executable programs and modules, such as program instructions/modules corresponding to the fresh air volume control method in the embodiment of the present application. The processor 501 executes various functional applications and data processing of the device by running software programs, instructions and modules stored in the memory 502, that is, implements the fresh air volume control method described above.
Memory 502 may include primarily a program storage area and a data storage area, wherein the program storage area may store an operating system, at least one application program required for functionality; the storage data area may store data created according to the use of the terminal device, etc. In addition, memory 502 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, memory 502 may further include memory located remotely from processor 310, which may be connected to the terminal device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof. The input device 503 may be used to receive input numeric or character information. The output device 504 can be used for controlling a control signal of fresh air quantity.
The embodiment of the application also provides a storage medium for storing computer executable instructions, which are used for executing the fresh air volume control method described in the embodiment when being executed by a processor.
Computer-readable storage media, including both permanent and non-permanent, removable and non-removable media, may be implemented in any method or technology for storage of information. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable storage media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
Note that the above is only a preferred embodiment of the present application and the technical principle applied. It will be understood by those skilled in the art that the present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the application. Therefore, while the application has been described in connection with the above embodiments, the application is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the application, which is set forth in the following claims.

Claims (7)

1. The fresh air volume control method is characterized by being applied to a fresh air system comprising a fresh air fan, and comprises the following steps of:
Acquiring an outdoor temperature, and determining an annular temperature operation interval to which the outdoor temperature belongs, wherein the annular temperature operation interval is set according to the heat exchange efficiency of a heat exchange core of the fresh air machine;
determining the exhaust air quantity of the fresh air machine according to the ring temperature operation interval;
acquiring an indoor temperature and determining a room temperature interval to which the indoor temperature belongs;
Determining the air supply quantity of the fresh air machine according to the room temperature interval and the air exhaust quantity;
Under the condition that the fresh air fan normally operates, the air supply quantity is larger than the air exhaust quantity, so that the fresh air system is in a micro-positive pressure state;
the outdoor temperature is divided into a low-temperature freezing area, a low-temperature freezing prevention area, a low-temperature area, a heat recovery area, a high-temperature pre-protection area and a high-temperature protection area from low to high in sequence;
correspondingly, the determining the exhaust air quantity of the fresh air machine according to the ring temperature operation interval comprises the following steps:
When the outdoor temperature is located in the low-temperature freezing area or the high-temperature protection area, controlling the fresh air fan to stop exhausting air;
when the outdoor temperature is located in the low-temperature pre-freezing area or the high-temperature pre-protection area, controlling the fresh air fan to exhaust air with the minimum running air quantity;
when the outdoor temperature is in the low temperature area, the fresh air fan is controlled to exhaust air with a first variable air volume, the first variable air volume and the temperature value of the low temperature area meet a first linear relation, and the first variable air volume in the first linear relation rises along with the rising of the temperature;
when the outdoor temperature is in the heat recovery area, controlling the fresh air fan to exhaust air at the maximum running air quantity;
When the outdoor temperature is in the high temperature area, the fresh air machine is controlled to exhaust air with a second variable air volume, the second variable air volume and the temperature value of the high temperature area meet a second linear relation, and the second variable air volume in the second linear relation is reduced along with the increase of the temperature;
and determining the air supply quantity of the fresh air machine according to the room temperature interval and the air exhaust quantity, wherein the method comprises the following steps of:
controlling the fresh air fan to supply air with a first air supply amount under the condition that the air exhaust amount is not 0, wherein the ratio of the first air supply amount to the air exhaust amount is a first preset parameter, and the first preset parameter is larger than 1;
when the indoor temperature is in a preset excessively low room temperature interval and the outdoor temperature is less than 0 ℃, controlling the fresh air fan to stop blowing;
When the indoor temperature is in a preset intermittent operation interval and the outdoor temperature is in a low-temperature freezing prevention area or a low-temperature area, controlling the fresh air machine to intermittently supply air with different air volumes;
when the indoor temperature is in a preset intermittent operation interval and the outdoor temperature is in the low-temperature freezing prevention area or the low-temperature area, controlling the fresh air machine to intermittently supply air with different air volumes comprises:
acquiring and recording a first exhaust temperature of the fresh air fan when the fresh air fan operates in the intermittent operation interval;
After the new fan runs for a preset time with the first air supply amount, acquiring a second exhaust temperature;
when the second exhaust temperature is smaller than the first exhaust temperature, the fresh air machine is controlled to supply air with second air supply quantity, the ratio of the second air supply quantity to the exhaust air quantity is a second preset parameter, the second air supply quantity is smaller than the first air supply quantity, and the second preset parameter is smaller than the first preset parameter.
2. The fresh air volume control method according to claim 1, further comprising, before the determining the exhaust volume of the fresh air fan according to the ring temperature operation interval:
Receiving mode switching information, and determining the operation modes of the fresh air fan according to the mode switching information, wherein different operation modes correspond to different air volume conversion coefficients;
and determining the air discharge quantity according to the air quantity conversion coefficient and the ring temperature operation interval.
3. The fresh air volume control method according to claim 2, wherein the determining the exhaust volume according to the volume conversion coefficient and the ambient temperature operation interval includes:
determining the current ring temperature operation interval according to the outdoor temperature;
If the ring temperature operation zone is the heat recovery zone, controlling the fresh air fan to exhaust air with a first target air quantity, wherein the first target air quantity is the product of the maximum operation air quantity and an air quantity conversion coefficient corresponding to the current operation mode;
and if the annular temperature operation region is the low temperature region or the high temperature region, controlling the fresh air fan to exhaust air with a second target air volume, wherein the second target air volume and the temperature value of the low temperature region or the high temperature region meet a linear relation, and the second target air volume is smaller than or equal to the first target air volume.
4. The fresh air volume control method according to claim 2 or 3, wherein the determining the exhaust volume according to the volume conversion coefficient and the ambient temperature operation interval further comprises:
When the mode switching information corresponding to a preset operation mode is received, the exhaust temperature of the fresh air fan is obtained;
and if the annular temperature operation region is the low temperature prevention freezing region, the high temperature pre-protection region, the low temperature region or the high temperature region, and the exhaust temperature is higher than the preset freezing temperature, controlling the fresh air machine to exhaust air with a third target air volume, wherein the third target air volume is the product of the maximum operation air volume and an air volume conversion coefficient corresponding to a preset operation mode.
5. The utility model provides a new trend amount of wind controlling means, its characterized in that is applied to the new trend system including the new fan, new trend amount of wind controlling means includes:
The first temperature acquisition module is configured to acquire outdoor temperature, determine an annular temperature operation interval to which the outdoor temperature belongs, and set the annular temperature operation interval according to the efficiency of the heat exchange core of the fresh air machine;
The air exhaust quantity determining module is configured to determine the air exhaust quantity of the fresh air machine according to the ring temperature operation interval;
The second temperature acquisition module is configured to acquire indoor temperature and determine a room temperature interval to which the indoor temperature belongs;
the air supply quantity determining module is configured to determine the air supply quantity of the fresh air machine according to the room temperature interval and the air exhaust quantity;
Under the condition that the fresh air fan normally operates, the air supply quantity is larger than the air exhaust quantity, so that the fresh air system is in a micro-positive pressure state;
the outdoor temperature is divided into a low-temperature freezing area, a low-temperature freezing prevention area, a low-temperature area, a heat recovery area, a high-temperature pre-protection area and a high-temperature protection area from low to high in sequence, and the exhaust air quantity determining module is further configured to:
When the outdoor temperature is located in the low-temperature freezing area or the high-temperature protection area, controlling the fresh air fan to stop exhausting air;
when the outdoor temperature is located in the low-temperature pre-freezing area or the high-temperature pre-protection area, controlling the fresh air fan to exhaust air with the minimum running air quantity;
when the outdoor temperature is in the low temperature area, the fresh air fan is controlled to exhaust air with a first variable air volume, the first variable air volume and the temperature value of the low temperature area meet a first linear relation, and the first variable air volume in the first linear relation rises along with the rising of the temperature;
when the outdoor temperature is in the heat recovery area, controlling the fresh air fan to exhaust air at the maximum running air quantity;
When the outdoor temperature is in the high temperature area, the fresh air machine is controlled to exhaust air with a second variable air volume, the second variable air volume and the temperature value of the high temperature area meet a second linear relation, and the second variable air volume in the second linear relation is reduced along with the increase of the temperature;
The air supply amount determination module is further configured to:
controlling the fresh air fan to supply air with a first air supply amount under the condition that the air exhaust amount is not 0, wherein the ratio of the first air supply amount to the air exhaust amount is a first preset parameter, and the first preset parameter is larger than 1;
when the indoor temperature is in a preset excessively low room temperature interval and the outdoor temperature is less than 0 ℃, controlling the fresh air fan to stop blowing;
When the indoor temperature is in a preset intermittent operation interval and the outdoor temperature is in a low-temperature freezing prevention area or a low-temperature area, controlling the fresh air machine to intermittently supply air with different air volumes;
The air supply amount determination module is further configured to:
acquiring and recording a first exhaust temperature of the fresh air fan when the fresh air fan operates in the intermittent operation interval;
After the new fan runs for a preset time with the first air supply amount, acquiring a second exhaust temperature;
when the second exhaust temperature is smaller than the first exhaust temperature, the fresh air machine is controlled to supply air with second air supply quantity, the ratio of the second air supply quantity to the exhaust air quantity is a second preset parameter, the second air supply quantity is smaller than the first air supply quantity, and the second preset parameter is smaller than the first preset parameter.
6. Fresh air volume control equipment, characterized by, include:
one or more processors;
And the storage device is used for storing one or more programs, and when one or more programs are executed by one or more processors, the one or more processors realize the fresh air quantity control method according to any one of claims 1-4.
7. A storage medium storing computer-executable instructions, which when executed by a processor are for performing the fresh air volume control method of any one of claims 1-4.
CN202211028174.XA 2022-08-25 2022-08-25 Fresh air quantity control method, device, equipment and storage medium Active CN115406086B (en)

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CN110207340A (en) * 2019-06-10 2019-09-06 广东美的暖通设备有限公司 The new blower of Total heat exchange and its control method
CN110925953A (en) * 2019-12-11 2020-03-27 南京晶华智能科技有限公司 Exhaust heat recovery anti-freezing control method, device and system

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Publication number Priority date Publication date Assignee Title
JP6274869B2 (en) * 2014-01-16 2018-02-07 三菱電機株式会社 Ventilation equipment
CN112665111B (en) * 2019-10-15 2022-12-20 广东美的制冷设备有限公司 Fresh air fan control method and system, fresh air fan and storage medium
CN114110966A (en) * 2020-08-25 2022-03-01 广东美的制冷设备有限公司 Temperature control method and device for fresh air machine, fresh air machine and storage medium

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Publication number Priority date Publication date Assignee Title
CN110207340A (en) * 2019-06-10 2019-09-06 广东美的暖通设备有限公司 The new blower of Total heat exchange and its control method
CN110925953A (en) * 2019-12-11 2020-03-27 南京晶华智能科技有限公司 Exhaust heat recovery anti-freezing control method, device and system

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