CN111141013B - Air conditioner control method and air conditioning unit control system - Google Patents

Air conditioner control method and air conditioning unit control system Download PDF

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Publication number
CN111141013B
CN111141013B CN201911397908.XA CN201911397908A CN111141013B CN 111141013 B CN111141013 B CN 111141013B CN 201911397908 A CN201911397908 A CN 201911397908A CN 111141013 B CN111141013 B CN 111141013B
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China
Prior art keywords
temperature
return air
air inlet
correction
indoor unit
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CN201911397908.XA
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CN111141013A (en
Inventor
陈彬茜
苏闯
王婕
徐铁兵
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Ningbo Aux Electric Co Ltd
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Ningbo Aux Electric Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • F24F11/58—Remote control using Internet communication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature

Abstract

The invention provides an air conditioner control method which comprises the steps of obtaining the ambient temperature and the temperature of a return air inlet, calculating the corrected temperature of the return air according to the working state of an indoor unit and the ambient temperature, and controlling the unit to work. Directly come the start-up of control unit according to the return air inlet temperature among the prior art, there is the deviation because the refrigerant still can understand the heat that gives off including the quick-witted flow, so calculate the corrected value of return air inlet temperature through ambient temperature and return air inlet temperature in this application, make it accord with actual conditions to control the unit according to the above. In addition, in order to correct the temperature of the air return opening more accurately, the working state of the indoor unit is divided into a state that the indoor unit is in a temperature-reaching shutdown state and a state that the indoor unit is in a temperature-reaching shutdown restart state.

Description

Air conditioner control method and air conditioning unit control system
Technical Field
The invention relates to air conditioner control, in particular to an air conditioner control method and an air conditioning unit control system.
Background
When the multi-connected air conditioning unit is used for heating, the conditions that one part of the internal machines are operated and one part of the internal machines are shut down or shut down when the temperature is reached frequently exist.
Because the expansion valve of the shutdown internal machine or the shutdown internal machine at the temperature needs to keep a certain opening degree during heating, the operation requirement of the refrigerant of the whole system can be conveniently adjusted. Therefore, the refrigerant can also dissipate heat to the outside when circulating in the shutdown/to-temperature shutdown internal machine. And the fans of these indoor units are all in the off-state this moment, therefore the heat that gives off all can gather inside the unit, especially some furred ceiling indoor units to make the return air sensor detected value of indoor unit on the high side, distortion.
The detection value of the return air sensor is distorted due to heat accumulation, and the return air sensor is judged to be high in ambient temperature by mistake and does not need to be started when the temperature is higher than the set value, so that the return air sensor is not started. To solve this problem, a fixed value is usually used for correction. Due to the fact that the adaptive range of the correction value is limited, various scenes used by a user cannot be met, and the comfort experience of the user is poor.
Disclosure of Invention
In order to solve at least one of the problems, the invention provides an air conditioner control method which comprises the steps of obtaining the ambient temperature and the temperature of a return air inlet, calculating the return air correction temperature according to the working state of an indoor unit and the ambient temperature, and controlling the unit to work.
Directly come the start-up of control unit according to the return air inlet temperature among the prior art, there is the deviation because the refrigerant still can understand the heat that gives off including the quick-witted flow, so calculate the corrected value of return air inlet temperature through ambient temperature and return air inlet temperature in this application, make it accord with actual conditions to control the unit according to the above.
In addition, in order to correct the temperature of the air return opening more accurately, the working state of the indoor unit is divided into a state that the indoor unit is in a temperature-reaching shutdown state and a state that the indoor unit is in a temperature-reaching shutdown restart state.
Preferably, the working state of the indoor unit comprises that the indoor unit is in a temperature-reaching shutdown state, and the ambient temperature value T and the return air inlet temperature T are obtained at the momentGo back toAccording to the ambient temperature value T and the return air inlet temperature TGo back toCalculating the corrected temperature T of the return airCorrection ofWhen the return air is corrected for temperature TCorrection ofAnd when the preset condition is met, restarting the unit.
When the working state of the indoor unit is in a temperature-reaching shutdown state, the return air correction temperature is calculated according to the ambient temperature and the temperature of the return air inlet, wherein the preset condition can be set temperature for a user, and in order to compensate errors, the temperature can be two degrees centigrade lower than the set temperature of the user. Or adjusted according to other circumstances.
Preferably, the condition for determining that the indoor unit is in the temperature-reaching shutdown state is that the outdoor unit is turned on and the indoor electronic expansion valve is opened, and/or other indoor units are in the on state.
The temperature-reaching shutdown state is set to be a stable state, so that the acquired parameters are representative, and errors in control caused by unrepresentative acquired parameters due to the fact that the device goes out of an unstable state are avoided.
Preferably, according to said ambient temperature value T1And obtaining the temperature T of the return air inletHui 1Calculating the corrected temperature T of the return airCorrection ofThe method comprises the following steps:
after the indoor unit is in a temperature-reaching shutdown state, the time period t is set every time1Measuring the temperature T of the return air inletGo back to iAnd taking n groups of data, then:
K＝(Thui 1+T2 coming back+TGo back to i+…+TBack to n)/(n-1)t1
△T＝K*t
TCorrection of＝TSide of returning to real-△T
Wherein: k is the correction coefficient of the return air temperature, Delta T is the correction value of the return air temperature, T is the time length when the distance reaches the shutdown of the thermal shutdown at the current moment, and T isSide of returning to realThe actual temperature of the air return inlet at the current moment is measured.
And (3) taking values of the return air inlet temperature for many times, calculating the values according to the formula to further obtain a correction parameter, and correcting the return air inlet temperature to reflect the actual return air inlet temperature.
Preferably, the operation state of the indoor unit includes that the indoor unit is in a warm shutdown restart state, and the ambient temperature T and the return air inlet temperature T are acquired at the momentGo back toAccording to the ambient temperature T and the return air inlet temperature TGo back toCalculating the corrected temperature T of the return airCorrection of。
When the working state of the indoor unit is in a shutdown and restart state when the indoor unit reaches the temperature, the temperature of the indoor unit is increased according to the ambient temperature T and the temperature of the air return inlet T at the momentGo back toAnd calculating the return air correction temperature.
This is now divided into two cases:
preferably, when the return air inlet temperature T is lower than the air inlet temperature TGo back toWhen the difference value with the environment temperature T is not less than the preset temperature, the return air correction temperature TCorrection ofIs the ambient temperature T.
Preferably, when the return air inlet temperature T is lower than the air inlet temperature TGo back toWhen the difference value with the environment temperature T is less than the preset temperature, the return air correction temperature TCorrection ofIs the ambient temperature T and the return air inlet temperature TGo back toAverage value of (a).
For the above two cases to the return air inlet temperature TGo back toAnd determining different modes of the return air correction temperature according to different conditions of the difference value of the environmental temperature T, so that the return air correction temperature is more fit with the actual condition, and the unit control is better taken as a reference.
The preset temperature can be taken to be 3 ℃.
Preferably, the return air inlet temperature TGo back toRestarting a time interval t for the indoor unit to be in a shutdown reaching a temperature2And (4) internal acquisition.
T here due to instability of various parameters at initial set start2Can get 3min, each parameter tends to stably in the system this moment, and return air temperature revises for the control of unit is more close to reality, can improve user's travelling comfort.
The application also provides an air conditioning unit control system, which comprises an ambient temperature detection module and a control module, wherein the control module applies the air conditioning control method according to the technical scheme.
Preferably, the environment temperature detection module is arranged in a remote controller or a wire controller.
The temperature measured by the remote controller or the wire controller is controlled as the return air temperature, so that the phenomenon that heat is coked due to the fact that the machine is in a temperature shutdown state is avoided, the heating effect of the machine set is poor, and the comfort of a user is influenced.
This application scheme can avoid because the heat collection leads to return air temperature to detect the deviation big, and control is not accurate, avoids the fan to frequently start the comfortable experience nature that influences the user.
Drawings
FIG. 1 is a control block diagram;
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In one embodiment, the air conditioner control method comprises the steps of obtaining the ambient temperature and the temperature of a return air inlet, calculating the corrected temperature of the return air according to the working state of an indoor unit and the ambient temperature, and controlling the unit to work. Directly come the start-up of control unit according to the return air inlet temperature among the prior art, there is the deviation because the refrigerant still can understand the heat that gives off including the quick-witted flow, so calculate the corrected value of return air inlet temperature through ambient temperature and return air inlet temperature in this application, make it accord with actual conditions to control the unit according to the above.
In addition, in order to correct the temperature of the air return opening more accurately, the working state of the indoor unit is divided into a state that the indoor unit is in a temperature-reaching shutdown state and a state that the indoor unit is in a temperature-reaching shutdown restart state.
When the indoor unit is in a temperature-reaching shutdown state according to the working state of the indoor unit, acquiring an environmental temperature value T and a return air inlet temperature T at the momentGo back toAccording to the ambient temperature value T and the return air inlet temperature TGo back toCalculating the corrected temperature T of the return airCorrection ofWhen the return air is corrected for temperature TCorrection ofAnd when the preset condition is met, restarting the unit. When the working state of the indoor unit is in a temperature-reaching shutdown state, the return air correction temperature is calculated according to the ambient temperature and the temperature of the return air inlet, wherein the preset condition can be set temperature for a user, and in order to compensate errors, the temperature can be two degrees centigrade lower than the set temperature of the user. Or adjusted according to other circumstances.
In addition, the condition for judging that the indoor unit is in the temperature-reaching shutdown state is that the outdoor unit is started to operate and the indoor electronic expansion valve is opened, and/or other indoor units are in the startup state. The temperature-reaching shutdown state is set to be a stable state, so that the acquired parameters are representative, and errors in control caused by unrepresentative acquired parameters due to the fact that the device goes out of an unstable state are avoided.
The specific scheme of correcting the return air temperature at the moment is that the environment temperature value T is obtained according to the obtained environment temperature value T1And obtaining the temperature T of the return air inletHui 1Calculating the corrected temperature T of the return airCorrection ofThe method comprises the following steps:
after the indoor unit is in a temperature-reaching shutdown state, the time period t is set every time1Measure backTuyere temperature TGo back to iAnd taking n groups of data, then:
K＝(Thui 1+T2 coming back+TGo back to i+…+TBack to n)/(n-1)t1
△T＝K*t
TCorrection of＝TSide of returning to real-△T
Wherein: k is the correction coefficient of the return air temperature, Delta T is the correction value of the return air temperature, T is the time length when the distance reaches the shutdown of the thermal shutdown at the current moment, and T isSide of returning to realThe actual temperature of the air return inlet at the current moment is measured.
In one particular embodiment, the return air temperature T is measured five times, K ═ T (T ═ T)Hui 1+T2 coming back+T3 of Chinese character Hui+THui 4+THui 5)/4t2. And calculating the return air correction temperature according to K.
And (3) taking values of the return air inlet temperature for many times, calculating the values according to the formula to further obtain a correction parameter, and correcting the return air inlet temperature to reflect the actual return air inlet temperature.
When the indoor unit is in a temperature-reaching shutdown restart state according to the working state of the indoor unit, acquiring the ambient temperature T and the return air inlet temperature T at the momentGo back toAccording to the ambient temperature T and the return air inlet temperature TGo back toCalculating the corrected temperature T of the return airCorrection of。
When the working state of the indoor unit is in a shutdown and restart state when the indoor unit reaches the temperature, the temperature of the indoor unit is increased according to the ambient temperature T and the temperature of the air return inlet T at the momentGo back toAnd calculating the return air correction temperature.
This is now divided into two cases:
when the temperature T of the return air inlet is higher than the temperature T of the return air inletGo back toWhen the difference value with the environment temperature T is not less than the preset temperature, the return air correction temperature TCorrection ofIs the ambient temperature T.
When the temperature T of the return air inlet is higher than the temperature T of the return air inletGo back toAnd the ambient temperature T1-2When the difference value is less than the preset temperature, the return air correction temperature TCorrection ofIs the ambient temperature T and the return air inlet temperature TGo back toAverage value of (a).
For the aboveTwo condition pairs for the return air inlet temperature TGo back toAnd determining different modes of the return air correction temperature according to different conditions of the difference value of the environmental temperature T, so that the return air correction temperature is more fit with the actual condition, and the unit control is better taken as a reference.
The preset temperature can be taken to be 3 ℃.
If TGo back to-T is greater than or equal to 3 ℃ and then TCorrection of＝T，TGo back to-T < 3 ℃, then TCorrection of＝(T+TGo back to)/2。
In order to make the control of the unit closer to reality and improve user comfort, the return air inlet temperature TGo back toRestarting a time interval t for the indoor unit to be in a shutdown reaching a temperature2And (4) internal acquisition.
T here due to instability of various parameters at initial set start2Can get 3min, each parameter tends to stably in the system this moment, and return air temperature revises for the control of unit is more close to reality, can improve user's travelling comfort.
The application also provides an air conditioning unit control system, which comprises an ambient temperature detection module and a control module, wherein the control module applies the air conditioning control method according to the technical scheme.
In the system, the environment temperature detection module is arranged in a remote controller or a wire controller.
The temperature measured by the remote controller or the wire controller is controlled as the return air temperature, so that the phenomenon that heat is coked due to the fact that the machine is in a temperature shutdown state is avoided, the heating effect of the machine set is poor, and the comfort of a user is influenced.
This application scheme can avoid because the heat collection leads to return air temperature to detect the deviation big, and control is not accurate, avoids the fan to frequently start the comfortable experience nature that influences the user.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (8)

1. The air conditioner control method comprises the steps of obtaining the ambient temperature and the return air inlet temperature, and is characterized in that: calculating the return air correction temperature according to the working state of the indoor unit and the ambient temperature, and controlling the unit to work; the working state of the indoor unit comprises that the indoor unit is in a temperature-reaching shutdown state and the indoor unit is in a temperature-reaching shutdown restart state;
when the indoor unit is in a temperature-reaching shutdown state, the ambient temperature value T and the return air inlet temperature T are obtained at the momentGo back toAccording to the ambient temperature value T and the return air inlet temperature TGo back toCalculating the corrected temperature T of the return airCorrection ofWhen the return air is corrected for temperature TCorrection ofWhen a preset condition is met, restarting the unit;
obtaining the ambient temperature value T and the return air inlet temperature T according to the temperature valuesGo back toCalculating the corrected temperature T of the return airCorrection ofThe method comprises the following steps:
after the indoor unit is in a temperature-reaching shutdown state, the time period t is set every time1Measuring the temperature T of the return air inletGo back to iAnd taking n groups of data, then:
K＝(Thui 1+T2 coming back+TGo back to i+…+TBack to n)/(n-1)t1
△T＝K*t
TCorrection of＝TBack measurement-△T
Wherein: k is the correction coefficient of the return air temperature, Delta T is the correction value of the return air temperature, T is the time length when the distance reaches the shutdown of the thermal shutdown at the current moment, and T isBack measurementThe actual temperature of the air return opening at the current moment is measured;
the judgment condition that the indoor unit is in the temperature-reaching shutdown state is that the outdoor unit is started to operate and the indoor electronic expansion valve is opened, and/or other indoor units are in the startup state.
2. The air conditioner control method according to claim 1, characterized in that: the judgment condition that the indoor unit is in the temperature-reaching shutdown state is that the outdoor unit is started to operate and the indoor electronic expansion valve is opened, and/or other indoor units are in the startup state.
3. The air conditioner control method according to claim 1, characterized in that: when the indoor unit is in a temperature-reaching shutdown restart state, the ambient temperature T and the return air inlet temperature T are obtained at the momentGo back toAccording to the ambient temperature T and the return air inlet temperature TGo back toCalculating the corrected temperature T of the return airCorrection of。
4. The air conditioner control method according to claim 3, characterized in that: when the temperature T of the return air inlet is higher than the temperature T of the return air inletGo back toWhen the difference value with the environment temperature T is not less than the preset temperature, the return air correction temperature TCorrection ofIs the ambient temperature T.
5. The air conditioner control method according to claim 4, wherein: when the temperature T of the return air inlet is higher than the temperature T of the return air inletGo back toWhen the difference value with the environment temperature T is less than the preset temperature, the return air correction temperature TCorrection ofIs the ambient temperature T and the return air inlet temperature TGo back toAverage value of (a).
6. The air conditioner control method according to claim 3, characterized in that: the temperature T of the air return inletGo back toRestarting a time interval t for the indoor unit to be in a shutdown reaching a temperature2And (4) internal acquisition.
7. The utility model provides an air conditioning unit control system, includes ambient temperature detection module and control module, its characterized in that: the control module applies the air conditioner control method according to any one of claims 1 to 6.
8. The air conditioning unit control system according to claim 7, wherein: the environment temperature detection module is arranged in the remote controller or the wire controller.
CN201911397908.XA 2019-12-30 2019-12-30 Air conditioner control method and air conditioning unit control system Active CN111141013B (en)

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CN113669858A (en) * 2020-05-14 2021-11-19 青岛海尔空调器有限总公司 Air conditioner and temperature reaching control method of air conditioner in heating mode
CN113719983A (en) * 2020-05-26 2021-11-30 青岛海尔空调器有限总公司 Air conditioner and refrigeration temperature-reaching control method of air conditioner
CN111895583A (en) * 2020-08-14 2020-11-06 珠海格力电器股份有限公司 Control method and device of air conditioner and air conditioner
CN114251803B (en) * 2020-09-22 2023-03-31 广东美的精密模具科技有限公司 Air conditioner, air conditioner control method and device and readable storage medium
CN113339942B (en) * 2021-06-11 2022-03-18 珠海格力电器股份有限公司 Air conditioner and correction method for detecting ambient temperature thereof

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US9845963B2 (en) * 2014-10-31 2017-12-19 Honeywell International Inc. Economizer having damper modulation
CN106979597A (en) * 2017-05-08 2017-07-25 广东美的暖通设备有限公司 Control method and device when air-conditioning system and its temperature sensor fault
CN110594982B (en) * 2019-09-19 2021-07-06 宁波奥克斯电气股份有限公司 Air conditioner return air temperature detection, correction and control method
CN110500741A (en) * 2019-09-29 2019-11-26 芜湖美智空调设备有限公司 Control method, system and the air-conditioning of air-conditioning

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