CN115289618B - Air conditioner control method, device, air conditioner and computer readable storage medium - Google Patents
Air conditioner control method, device, air conditioner and computer readable storage medium Download PDFInfo
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- CN115289618B CN115289618B CN202211000107.7A CN202211000107A CN115289618B CN 115289618 B CN115289618 B CN 115289618B CN 202211000107 A CN202211000107 A CN 202211000107A CN 115289618 B CN115289618 B CN 115289618B
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000007710 freezing Methods 0.000 claims abstract description 170
- 230000008014 freezing Effects 0.000 claims abstract description 85
- 230000002265 prevention Effects 0.000 claims abstract description 20
- 238000007791 dehumidification Methods 0.000 claims abstract description 10
- 238000005057 refrigeration Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims description 23
- 238000004590 computer program Methods 0.000 claims description 7
- 108010053481 Antifreeze Proteins Proteins 0.000 claims description 6
- 230000002528 anti-freeze Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 description 17
- 230000000694 effects Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 206010060904 Freezing phenomenon Diseases 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Classifications
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/43—Defrosting; Preventing freezing of indoor units
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
-
- 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
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
-
- 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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
-
- 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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/30—Velocity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- 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)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The embodiment of the invention provides an air conditioner control method and device, an air conditioner and a computer readable storage medium, and relates to the technical field of air conditioner control. Under the condition that the air conditioner operates in a refrigeration mode or a dehumidification mode, the temperature of an inner coil pipe of the air conditioner and the air speed of an air outlet are obtained; and under the condition that the temperature of the inner coil pipe and the wind speed of the air outlet meet the freezing prevention protection condition, performing freezing prevention operation. Because the freezing condition of the heat exchanger can influence the air outlet air speed of the air conditioner, the air conditioner can determine whether the air conditioner should start anti-freezing protection according to the temperature of the inner coil pipe and the air outlet air speed and the whole freezing condition of the heat exchanger, so that the anti-freezing protection is started in time, and the starting precision of the anti-freezing protection of the air conditioner is improved.
Description
Technical Field
The present invention relates to the field of air conditioner control technology, and in particular, to an air conditioner control method, an air conditioner control device, an air conditioner, and a computer readable storage medium.
Background
At present, when an air conditioner operates according to refrigeration or dehumidification, the outer surface of a heat exchanger of an indoor unit is always in a low-temperature state, in this case, when indoor air flows through the heat exchanger, water vapor in the air is easily condensed into dew and even frost on the heat exchanger, so that a freezing phenomenon is caused, and at the moment, the air conditioner can relieve the freezing condition of the heat exchanger by opening an anti-freezing protection mode.
In the prior art, a temperature detection device can be arranged on a heat exchanger of an indoor unit, so that whether the air conditioner should start anti-freezing protection or not is determined according to the temperature of the heat exchanger, but because the temperature detection device is often arranged on a certain branch of a coil pipe in the heat exchanger, the air conditioner can only start anti-freezing protection according to the freezing condition of the branch where the temperature detection device is positioned. However, in the practical application process, the freezing condition of the branch where the temperature detection device is located cannot reflect the whole freezing condition of the heat exchanger, so that the air conditioner cannot timely start anti-freezing protection, and the problem of low anti-freezing protection starting precision exists.
Disclosure of Invention
The invention solves the problem of how to timely start the anti-freezing protection of the air conditioner, thereby improving the anti-freezing protection starting precision.
In order to solve the above problems, embodiments of the present invention provide a method and apparatus for controlling an air conditioner, and a computer readable storage medium, so that the air conditioner can timely start anti-freezing protection, and the start accuracy of the anti-freezing protection is improved.
In a first aspect, the present invention provides a control method of an air conditioner, the method comprising:
Under the condition that the air conditioner operates in a refrigeration mode or a dehumidification mode, the temperature of an inner coil pipe of the air conditioner and the air speed of an air outlet are obtained;
And under the condition that the temperature of the inner coil pipe and the wind speed of the air outlet meet the freezing prevention protection condition, executing freezing prevention operation.
According to the air conditioner control method provided by the embodiment of the invention, under the condition that the air conditioner operates in a refrigeration mode or a dehumidification mode, the temperature of the inner coil pipe and the wind speed of the air outlet of the air conditioner are obtained, and under the condition that the temperature of the inner coil pipe and the wind speed of the air outlet meet the freezing prevention protection condition, freezing prevention operation is executed. Because the freezing condition of the heat exchanger can influence the air outlet air speed of the air conditioner, the air conditioner can determine whether the air conditioner should start anti-freezing protection according to the temperature of the inner coil pipe and the air outlet air speed and the whole freezing condition of the heat exchanger, so that the anti-freezing protection is started in time, and the starting precision of the anti-freezing protection of the air conditioner is improved.
In an alternative embodiment, the performing the anti-freezing operation in the case that the inner coil temperature and the wind speed of the wind outlet meet the anti-freezing protection condition includes:
acquiring the exhaust saturation temperature of the air conditioner and the bottom temperature of the compressor under the condition that the temperature of the inner coil is higher than the preset freezing temperature and the air speed of the air outlet is lower than the first preset air speed;
And executing corresponding anti-freezing operation according to the wind speed of the air outlet, the exhaust saturation temperature and the bottom temperature of the compressor.
According to the air conditioner control method provided by the embodiment of the invention, under the condition that the temperature of the inner coil pipe is higher than the preset freezing temperature and the air speed of the air outlet is lower than the first preset air speed, the exhaust saturation temperature of the air conditioner and the bottom temperature of the compressor are obtained, and then the corresponding anti-freezing operation is executed according to the air speed of the air outlet, the exhaust saturation temperature and the bottom temperature of the compressor. The method can execute corresponding anti-freezing operation according to the air outlet air speed, the exhaust saturation temperature and the bottom temperature of the compressor under the condition that the inner coil temperature and the air outlet air speed meet the anti-freezing protection condition, so that the corresponding anti-freezing operation can be executed according to the running state of the air conditioner, and the running safety and the anti-freezing effect of the air conditioner are ensured.
In an alternative embodiment, the performing the corresponding anti-freezing operation according to the wind speed of the wind outlet, the saturation temperature of the exhaust gas and the bottom temperature of the compressor includes:
When the air outlet air speed is larger than or equal to a second preset air speed and smaller than the first preset air speed, and the difference value between the exhaust saturation temperature and the bottom temperature of the compressor is larger than or equal to a first preset temperature, modifying the protection parameter of the compressor into a first protection parameter;
and controlling the compressor to run in a down-conversion mode according to the first protection parameter.
According to the air conditioner control method provided by the embodiment of the invention, when the air speed of the air outlet is larger than or equal to the second preset air speed and smaller than the first preset air speed, and the difference value between the exhaust saturation temperature and the bottom temperature of the compressor is larger than or equal to the first preset temperature, the protection parameters of the compressor are modified to be the first protection parameters, and the compressor is controlled to run in a frequency-reducing mode according to the first protection parameters. By the method, the protection parameters can be modified according to the current running state of the air conditioner, so that the safety of the down-conversion running process of the compressor and the anti-freezing effect of the air conditioner are ensured.
In an alternative embodiment, the performing the corresponding anti-freezing operation according to the wind speed of the wind outlet, the saturation temperature of the exhaust gas and the bottom temperature of the compressor includes:
When the air outlet air speed is smaller than a second preset air speed, and the difference value between the exhaust saturation temperature and the bottom temperature of the compressor is larger than or equal to the second preset temperature and smaller than the first preset temperature, modifying the protection parameter of the compressor into a second protection parameter;
and controlling the compressor to run in a frequency-reducing mode according to the second protection parameter, and sending out freezing prompt information.
According to the air conditioner control method provided by the embodiment of the invention, when the air speed of the air outlet is smaller than the second preset air speed, and the difference value between the exhaust saturation temperature and the bottom temperature of the compressor is larger than or equal to the second preset temperature and smaller than the first preset temperature, the protection parameters of the compressor are modified into the second protection parameters, the compressor is controlled to run in a frequency-reducing mode according to the second protection parameters, and freezing prompt information is sent out. By the method, the protection parameters can be modified according to the current running state of the air conditioner, so that the safety of the down-conversion running process of the compressor and the anti-freezing effect of the air conditioner are ensured. In addition, the air conditioner can send out freezing prompt information to prompt a user to freeze and overhaul the air conditioner.
In an alternative embodiment, the performing the corresponding anti-freezing operation according to the wind speed of the wind outlet, the saturation temperature of the exhaust gas and the bottom temperature of the compressor includes:
and controlling the air conditioner to stop running and sending out freezing prompt information under the condition that the air outlet air speed is smaller than a second preset air speed and the difference value between the exhaust saturation temperature and the bottom temperature of the compressor is smaller than the second preset temperature.
According to the air conditioner control method provided by the embodiment of the invention, when the air speed of the air outlet is smaller than the second preset air speed and the difference between the exhaust saturation temperature and the bottom temperature of the compressor is smaller than the second preset temperature, the air conditioner is controlled to stop running, and freezing prompt information is sent out. By the method, when the integral frosting condition of the air conditioner is serious, the air conditioner is controlled to stop running so as to prevent the freezing condition of the air conditioner from being aggravated and improve the safety of the air conditioner.
In an alternative embodiment, the performing the anti-freezing operation in the case that the inner coil temperature and the wind speed of the wind outlet meet the anti-freezing protection condition includes:
And under the condition that the temperature of the inner coil pipe is less than or equal to the preset freezing temperature, controlling the compressor of the air conditioner to operate according to the preset freezing prevention frequency. In a second aspect, the present invention provides an air conditioner control device, the device comprising:
The air conditioner comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the temperature of an inner coil pipe of the air conditioner and the air speed of an air outlet under the condition that the air conditioner operates in a refrigeration mode or a dehumidification mode;
And the operation module is used for executing anti-freezing operation under the condition that the temperature of the inner coil pipe and the wind speed of the air outlet meet the anti-freezing protection condition.
According to the air conditioner control device provided by the embodiment of the invention, the acquisition module can acquire the temperature of the inner coil pipe and the wind speed of the air outlet of the air conditioner under the condition that the air conditioner operates in a refrigerating mode or a dehumidifying mode, and the operation module can execute the freezing prevention operation under the condition that the temperature of the inner coil pipe and the wind speed of the air outlet meet the freezing prevention protection condition. Because the freezing condition of the heat exchanger can influence the air outlet air speed of the air conditioner, the air conditioner can determine whether the air conditioner should start anti-freezing protection according to the temperature of the inner coil pipe and the air outlet air speed and the whole freezing condition of the heat exchanger, so that the anti-freezing protection is started in time, and the starting precision of the anti-freezing protection of the air conditioner is improved.
In an optional embodiment, the operation module is further configured to determine that the inner coil temperature and the air outlet air speed meet an anti-freezing protection condition and obtain an exhaust saturation temperature and a bottom temperature of a compressor of the air conditioner when the inner coil temperature is greater than a preset freezing temperature and the air outlet air speed is less than a first preset air speed; and executing corresponding anti-freezing operation according to the wind speed of the air outlet, the exhaust saturation temperature and the bottom temperature of the compressor.
In a third aspect, the present invention provides an air conditioner comprising a controller implementing the method according to any one of the preceding embodiments by executing a computer program.
In a fourth aspect, the present invention provides a computer readable storage medium having stored thereon a computer program which, when executed by a controller, implements a method according to any of the preceding embodiments.
Drawings
Fig. 1 is a schematic block diagram of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a control method of an air conditioner according to an embodiment of the present invention;
Fig. 3 is a schematic flow chart of another control method of an air conditioner according to an embodiment of the present invention;
Fig. 4 is a schematic flow chart of another control method of an air conditioner according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of another control method of an air conditioner according to an embodiment of the present invention;
fig. 6 is a functional block diagram of an air conditioner control device according to an embodiment of the present invention.
Reference numerals illustrate:
10-an air conditioner; 100-indoor units; 101-a heat exchanger; 102-an air outlet; 110-an outdoor unit; a 111-compressor; 200-an acquisition module; 210-run module.
Detailed Description
At present, when an air conditioner operates according to refrigeration or dehumidification, the outer surface of a heat exchanger of an indoor unit of the air conditioner is often in a low-temperature state, in this case, when indoor air flows through the heat exchanger, water vapor in the air is easily condensed into dew and even frost on the heat exchanger, so that a freezing phenomenon is caused, and the freezing phenomenon can influence the operation effect of the air conditioner, so that the refrigerating capacity or the dehumidifying capacity of the air conditioner is weaker and weaker. In addition, the icing of the heat exchanger can cause the heat preservation of the external structure of the air conditioner to be poor, so that indoor vapor is condensed in an air duct of the air conditioner, and the air duct starts to blow water. At this time, the air conditioner can alleviate the freezing condition of the heat exchanger by opening the mode of preventing freezing and protecting.
In the prior art, a temperature detection device can be arranged on a heat exchanger of an indoor unit, so that whether the air conditioner should start anti-freezing protection or not is determined according to the temperature of the heat exchanger, but because the temperature detection device is often arranged on a certain branch of a coil pipe in the heat exchanger, the air conditioner can only start anti-freezing protection according to the freezing condition of the branch where the temperature detection device is positioned.
However, in the practical application process, the freezing condition of the branch where the temperature detection device is located cannot reflect the whole freezing condition of the heat exchanger in practice, that is, the situation that other branches of the inner coil are frozen, but the branch where the temperature detection device is located is not frozen, at this time, the whole freezing condition of the heat exchanger may be serious, but because the branch where the temperature detection device is located is not frozen, the air conditioner cannot start the anti-freezing protection according to the temperature obtained by the temperature detection device, so that the air conditioner is not started in time to start the anti-freezing protection, and the problem of lower anti-freezing protection starting precision exists.
On the basis, the embodiment of the invention provides a control method of an air conditioner, so that the air conditioner can timely start anti-freezing protection, and the anti-freezing protection starting precision is improved.
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
Referring to fig. 1, a block diagram of an air conditioner 10 according to an embodiment of the invention is shown, and referring to fig. 1, the air conditioner 10 includes an indoor unit 100 and an outdoor unit 110.
Optionally, the indoor unit 100 includes a heat exchanger 101 and an air outlet 102, and an inner coil is disposed on the heat exchanger 101, where the inner coil includes a plurality of branches, and a temperature detecting device is disposed on one of the branches for detecting the temperature of the branch. In one possible implementation, the temperature detection means may be a temperature sensor.
Optionally, a speed detecting device is disposed on the air outlet 102, for detecting the air speed of the air outlet. In one possible implementation, the speed detection device may be a tachometer.
Alternatively, the outdoor unit 110 includes a compressor 111, and a temperature detecting device is provided at the bottom of the compressor 111 to detect a bottom temperature of the compressor.
Optionally, the outdoor unit 110 further includes a pressure detecting device for detecting a discharge pressure. In one possible implementation, the pressure detection device may be a pressure sensor.
Optionally, the outdoor unit 110 further includes a controller, and the controller may implement the air conditioner control method provided by the embodiment of the present invention by executing a computer program.
The embodiment of the invention also provides a computer readable storage medium, on which a computer program is stored, which when executed by a controller can realize the air conditioner control method provided by the embodiment of the invention.
Next, the air conditioner control method according to the embodiment of the present invention will be described by way of example with reference to the air conditioner 10 in fig. 1 as an execution subject, and specifically, fig. 2 is a schematic flow chart of the air conditioner control method according to the embodiment of the present invention, and please refer to fig. 2, wherein the method includes:
Step S20, under the condition that the air conditioner operates in a refrigeration mode or a dehumidification mode, obtaining the temperature of an inner coil pipe of the air conditioner and the air speed of an air outlet;
optionally, the temperature of the inner coil is the temperature acquired by a temperature acquisition device arranged on the inner coil of the air conditioner; the wind speed of the air outlet is the wind speed obtained by the speed detection device. It will be appreciated that the inner coil temperature is the temperature of one of the legs of the inner coil.
Optionally, the temperature acquisition device and the speed detection device can acquire the temperature of the inner coil pipe and the wind speed of the air outlet in real time, and send the temperature and the wind speed to the controller.
And S21, executing anti-freezing operation under the condition that the temperature of the inner coil pipe and the wind speed of the air outlet meet the anti-freezing protection condition.
Optionally, the air conditioner can determine whether the air conditioner meets the anti-freezing protection condition according to the received temperature of the inner coil pipe and the wind speed of the air outlet. It can be understood that if the temperature of the inner coil and the wind speed of the air outlet meet the anti-freezing protection condition, it indicates that the heat exchanger has a certain freezing condition at this time, and the air conditioner needs to execute anti-freezing operation at this time so as to avoid aggravation of the freezing condition, thereby ensuring the reliability and stability of the air conditioner.
In one possible implementation manner, the air conditioner may determine, according to a preset time interval, whether the temperature of the inner coil and the wind speed of the air outlet meet the anti-freezing protection condition; in another possible implementation manner, the air conditioner can judge whether the temperature of the inner coil pipe and the wind speed of the air outlet meet the anti-freezing protection condition in real time.
According to the air conditioner control method provided by the embodiment of the invention, under the condition that the air conditioner operates in a refrigeration mode or a dehumidification mode, the temperature of the inner coil pipe and the wind speed of the air outlet of the air conditioner are obtained, and under the condition that the temperature of the inner coil pipe and the wind speed of the air outlet meet the freezing prevention protection condition, freezing prevention operation is executed. Because the freezing condition of the heat exchanger can influence the air outlet air speed of the air conditioner, the air conditioner can determine whether the air conditioner should start anti-freezing protection according to the temperature of the inner coil pipe and the air outlet air speed and the whole freezing condition of the heat exchanger, so that the anti-freezing protection is started in time, and the starting precision of the anti-freezing protection of the air conditioner is improved.
Optionally, since one of the branches of the heat exchanger of the air conditioner is provided with the temperature detection device, if the temperature collected by the temperature collection device is lower, it is indicated that the branch may have freezing condition, and no matter the wind speed of the air outlet, the freezing prevention operation needs to be performed. That is, the anti-freezing protection condition includes that the temperature of the inner coil is less than or equal to the preset freezing temperature, and on the basis of fig. 2, the above step S21 may be further implemented by the following steps:
And under the condition that the temperature of the inner coil pipe is less than or equal to the preset freezing temperature, controlling the compressor of the air conditioner to operate according to the preset freezing prevention frequency.
Alternatively, the preset freezing temperature and the preset freezing prevention frequency may be set in advance according to actual operation conditions and stored in the air conditioner. In one example, the preset freezing temperature may be 5 ℃.
In this embodiment, if the air conditioner determines that the temperature of the inner coil is less than or equal to the preset freezing temperature, whether the obtained air outlet wind speed is larger or smaller, it is determined that the air conditioner meets the anti-freezing protection condition, so that the compressor of the air conditioner can be controlled to operate according to the preset anti-freezing frequency.
Optionally, in order to ensure the anti-freezing effect of the air conditioner, the preset anti-freezing frequency should be less than the normal operation frequency of the compressor, i.e., if the temperature of the inner coil is less than or equal to the preset freezing temperature, the compressor should be down-operated. In one example, the preset anti-freeze frequency may be a lowest frequency of compressor operation, such as 22HZ.
Optionally, the air inlet of the air conditioner is not smooth due to the fact that the heat exchanger is frozen, and at the moment, the air speed of the air outlet is reduced, so that if the temperature of the inner coil is higher than the preset freezing temperature, the whole freezing condition of the heat exchanger can be determined according to the air speed of the air outlet. On the basis, a first preset wind speed can be set according to the actual application condition of the air conditioner so as to determine whether the air conditioner meets the anti-freezing protection condition, namely, the anti-freezing protection condition comprises that the temperature of the inner coil pipe is higher than a preset freezing temperature, and the wind speed of the air outlet is lower than the first preset wind speed. In addition, in order to ensure the anti-freezing effect of the air conditioner, the air conditioner can execute corresponding anti-freezing operation according to the actual running state under the condition that the temperature of the inner coil pipe and the wind speed of the air outlet meet the anti-freezing protection condition.
Specifically, on the basis of fig. 2, fig. 3 is another flow chart of the air conditioner control method provided in the embodiment of the present invention, please refer to fig. 3, and the step S21 may be further implemented by:
S21-1, acquiring the exhaust saturation temperature of the air conditioner and the bottom temperature of the compressor under the condition that the temperature of an inner coil is higher than a preset freezing temperature and the air speed of an air outlet is lower than a first preset air speed;
optionally, if the temperature of the inner coil is greater than the preset freezing temperature and the wind speed of the air outlet is less than the first preset wind speed, the air conditioner is indicated to meet the anti-freezing protection condition.
In one example, the first preset wind speed may be 3m/s.
Optionally, the bottom temperature of the compressor is the temperature detected by a temperature detecting device arranged at the bottom of the compressor; the exhaust saturation temperature is a temperature corresponding to the exhaust pressure detected by the pressure detecting means.
In this embodiment, the air conditioner may obtain the current bottom temperature of the compressor from the temperature detecting device disposed at the bottom of the compressor, obtain the current discharge pressure from the pressure detecting device, and determine the current discharge saturation temperature according to the discharge pressure when the temperature of the inner coil is greater than the preset freezing temperature and the wind speed of the wind outlet is less than the first preset wind speed.
In one example, a calculation formula may be set in the air conditioner in advance, and the air conditioner may calculate according to the exhaust pressure and the calculation formula to obtain the exhaust saturation temperature; in another example, each exhaust pressure and its corresponding exhaust saturation temperature may be stored in the air conditioner in advance, and the air conditioner may search for the corresponding exhaust saturation temperature according to the exhaust pressure after obtaining the exhaust pressure.
And S21-2, performing corresponding anti-freezing operation according to the wind speed of the air outlet, the exhaust saturation temperature and the bottom temperature of the compressor.
Alternatively, the air conditioner may determine an anti-freezing operation that should be currently performed according to the outlet wind speed, the discharge saturation temperature, and the compressor bottom temperature, and perform the anti-freezing operation.
Optionally, the air conditioner can realize anti-freezing operation by controlling the down-conversion operation mode of the compressor, so that the operation safety of the air conditioner is endangered due to the phenomena of overvoltage, overload and the like when the compressor is operated, and the compressor can be controlled to operate according to a certain protection parameter so as to ensure the operation effect of the compressor. Under the condition, in order to ensure the anti-freezing effect of the air conditioner, the air conditioner can modify the protection parameters of the compressor according to the wind speed of the air outlet, the exhaust saturation temperature and the bottom temperature of the compressor, so that the safety of the down-conversion operation process of the compressor and the anti-freezing effect of the air conditioner are ensured.
Specifically, fig. 4 is a schematic flow chart of another air conditioner control method according to an embodiment of the present invention, referring to fig. 4, the step S21-2 may be implemented by:
step S21-2-1, modifying the protection parameters of the compressor into first protection parameters under the condition that the air speed of the air outlet is larger than or equal to a second preset air speed and smaller than a first preset air speed, and the difference value between the exhaust saturation temperature and the bottom temperature of the compressor is larger than or equal to the first preset temperature;
alternatively, the second preset wind speed and the first preset temperature may be set in advance according to actual operation conditions and stored in the air conditioner. It will be appreciated that the second preset wind speed is less than the first preset wind speed.
In one example, if the first preset wind speed is 3m/s, the second preset wind speed may be 1m/s; the first preset temperature may be consistent with the preset freezing temperature, for example, 5 ℃, or may be inconsistent with the preset freezing temperature, which is not limited in the present invention.
Optionally, the protection parameters of the compressor include a down-conversion parameter, which in one possible implementation may be a compressor coil down-conversion temperature, and a shutdown parameter, which may be a protection shutdown temperature.
In this embodiment, the air conditioner may modify the current compressor coil down-conversion temperature to a first compressor coil down-conversion temperature and modify the current protection shutdown temperature to a first protection shutdown temperature when the air outlet wind speed is greater than or equal to a second preset wind speed and less than a first preset wind speed, and the difference between the exhaust saturation temperature and the compressor bottom temperature is greater than or equal to the first preset temperature.
Alternatively, the first compressor coil down-conversion temperature may be a sum of a current compressor coil down-conversion temperature and a preset first down-conversion temperature, and the first protection shutdown temperature may be a sum of a current protection shutdown temperature and a preset first protection temperature.
In one example, the preset first down-conversion temperature and the preset first protection temperature may be 1 ℃.
And S21-2-2, controlling the compressor to run in a down-conversion mode according to the first protection parameters.
In this embodiment, the air conditioner may control the compressor to operate down to a minimum frequency according to the first protection parameter. In one example, the minimum frequency may be 22HZ.
In addition, fig. 5 is a schematic flow chart of another air conditioner control method according to an embodiment of the present invention, please refer to fig. 5, wherein the step S21-2 may be implemented by:
S21-2-3, when the air speed of the air outlet is smaller than a second preset air speed, and the difference value between the exhaust saturation temperature and the bottom temperature of the compressor is larger than or equal to the second preset temperature and smaller than the first preset temperature, modifying the protection parameter of the compressor into a second protection parameter;
Alternatively, the second preset temperature may be set in advance according to an actual operation condition and stored in the air conditioner. It is understood that the second preset temperature is less than the first preset temperature.
In one example, if the first preset temperature is 5 ℃, the second preset temperature may be 0 ℃.
Optionally, the protection parameters of the compressor include a down-conversion parameter, which in one possible implementation may be a compressor coil down-conversion temperature, and a shutdown parameter, which may be a protection shutdown temperature.
In this embodiment, the air conditioner may modify the current compressor coil down-conversion temperature to a second compressor coil down-conversion temperature and modify the current protection shutdown temperature to a second protection shutdown temperature when the air outlet air speed is less than a second preset air speed and a difference between the exhaust saturation temperature and the compressor bottom temperature is greater than or equal to the second preset temperature and less than the first preset temperature.
Alternatively, the second compressor coil down-conversion temperature may be a sum of a current compressor coil down-conversion temperature and a preset second down-conversion temperature, and the second protection shutdown temperature may be a sum of a current protection shutdown temperature and a preset second protection temperature.
In one example, the preset second down-conversion temperature and the preset second protection temperature may be 2 ℃.
And S21-2-4, controlling the compressor to run in a frequency-reducing mode according to the second protection parameter, and sending out freezing prompt information.
In this embodiment, the air conditioner may control the compressor to operate down to a minimum frequency according to the second protection parameter. In one example, the minimum frequency may be 22HZ.
Optionally, the freeze prompt message is sent by the air conditioner and is used for prompting a user that overhauling should be performed. In one possible implementation, the air conditioner may be provided with a freezing prompt device, such as an indicator light, and the controller may control the indicator light to light so as to send out a freezing prompt message.
Optionally, in order to ensure the safety of the air conditioner, the air conditioner can also stop running when the freezing condition of the heat exchanger is serious, so that the aggravation of the freezing condition and the harm to the running safety are avoided. Specifically, on the basis of fig. 3, the above step S21-2 may be further implemented by:
and controlling the air conditioner to stop running and sending out freezing prompt information under the condition that the air speed of the air outlet is smaller than a second preset air speed and the difference value between the exhaust saturation temperature and the bottom temperature of the compressor is smaller than the second preset temperature.
In this embodiment, if the air speed of the air outlet is less than the second preset air speed and the difference between the exhaust saturation temperature and the bottom temperature of the compressor is less than the second preset temperature, it is indicated that the heat exchanger has serious freezing condition at this time, so that the air conditioner can be controlled to stop running and a freezing prompt message is sent.
Optionally, the freeze prompt message is sent by the air conditioner and is used for prompting a user that overhauling should be performed. In one possible implementation manner, the air conditioner may send the freezing prompt information to the intelligent remote controller or the air conditioner control APP disposed on the terminal device, and then the intelligent remote controller or the air conditioner control APP may notify the user to perform maintenance.
In order to perform the respective steps in the above embodiments and in each possible manner, an implementation of an air conditioner control device is given below. Further, referring to fig. 6, fig. 6 is a functional block diagram of an air conditioner control device according to an embodiment of the present invention. It should be noted that, the basic principle and the technical effects of the air conditioner control device provided in this embodiment are the same as those of the above embodiment, and for brevity, reference should be made to the corresponding contents of the above embodiment. The air conditioner control device comprises: the acquisition module 200 and the operation module 210.
The obtaining module 200 is configured to obtain an inner coil temperature and an air outlet wind speed of the air conditioner when the air conditioner is operated in a cooling mode or a dehumidifying mode;
It is understood that the obtaining module 200 may be configured to perform the step S20 described above;
the operation module 210 is configured to perform an anti-freezing operation when the temperature of the inner coil and the wind speed of the air outlet meet the anti-freezing protection condition.
It is understood that the operation module 210 may be configured to perform the above step S21.
Optionally, the operation module 210 is further configured to determine that the inner coil temperature and the air outlet air speed meet the anti-freezing protection condition and obtain an exhaust saturation temperature of the air conditioner and a bottom temperature of the compressor when the inner coil temperature is greater than a preset freezing temperature and the air outlet air speed is less than a first preset air speed; and executing corresponding anti-freezing operation according to the wind speed of the air outlet, the exhaust saturation temperature and the bottom temperature of the compressor.
It is understood that the operation module 210 may be configured to perform the steps S21-1 to S21-2.
Optionally, the operation module 210 is further configured to modify the protection parameter of the compressor to a first protection parameter when the air outlet air speed is greater than or equal to a second preset air speed and less than a first preset air speed, and a difference between the exhaust saturation temperature and the bottom temperature of the compressor is greater than or equal to the first preset temperature; the compressor is controlled to run down in frequency according to the first protection parameter.
It is understood that the operation module 210 may be used to perform the steps S21-2-1 to S21-2-2 described above.
Optionally, the operation module 210 is further configured to modify the protection parameter of the compressor to a second protection parameter when the air outlet air speed is less than a second preset air speed, and the difference between the exhaust saturation temperature and the bottom temperature of the compressor is greater than or equal to the second preset temperature and less than the first preset temperature; and controlling the compressor to run in a frequency-reducing mode according to the second protection parameter, and sending out freezing prompt information.
It is understood that the operation module 210 may be used to perform the steps S21-2-3 to S21-2-4 described above.
Optionally, the operation module 210 is further configured to control the air conditioner to stop operating and send out a freezing prompt message when the air outlet air speed is less than a second preset air speed and the difference between the exhaust saturation temperature and the bottom temperature of the compressor is less than the second preset temperature.
Optionally, the operation module 210 is further configured to control the air conditioner to operate at a preset freezing prevention frequency when the temperature of the inner coil is less than or equal to a preset freezing temperature.
According to the air conditioner control device provided by the embodiment of the invention, the acquisition module can acquire the temperature of the inner coil pipe and the wind speed of the air outlet of the air conditioner under the condition that the air conditioner operates in a refrigerating mode or a dehumidifying mode, and the operation module can execute the freezing prevention operation under the condition that the temperature of the inner coil pipe and the wind speed of the air outlet meet the freezing prevention protection condition. Because the freezing condition of the heat exchanger can influence the air outlet air speed of the air conditioner, the air conditioner can determine whether the air conditioner should start anti-freezing protection according to the temperature of the inner coil pipe and the air outlet air speed and the whole freezing condition of the heat exchanger, so that the anti-freezing protection is started in time, and the starting precision of the anti-freezing protection of the air conditioner is improved.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Claims (8)
1. An air conditioner control method, comprising:
Under the condition that the air conditioner operates in a refrigeration mode or a dehumidification mode, the temperature of an inner coil pipe of the air conditioner and the air speed of an air outlet are obtained;
Executing anti-freezing operation under the condition that the temperature of the inner coil pipe and the wind speed of the air outlet meet the anti-freezing protection condition; and under the condition that the temperature of the inner coil pipe and the wind speed of the air outlet meet the freezing prevention protection condition, executing freezing prevention operation, and comprising the following steps:
acquiring the exhaust saturation temperature of the air conditioner and the bottom temperature of the compressor under the condition that the temperature of the inner coil is higher than the preset freezing temperature and the air speed of the air outlet is lower than the first preset air speed;
And executing corresponding anti-freezing operation according to the wind speed of the air outlet, the exhaust saturation temperature and the bottom temperature of the compressor.
2. The method of claim 1, wherein the performing the corresponding anti-freeze operation based on the outlet wind speed, the discharge saturation temperature, and the compressor bottom temperature comprises:
When the air outlet air speed is larger than or equal to a second preset air speed and smaller than the first preset air speed, and the difference value between the exhaust saturation temperature and the bottom temperature of the compressor is larger than or equal to a first preset temperature, modifying the protection parameter of the compressor into a first protection parameter;
and controlling the compressor to run in a down-conversion mode according to the first protection parameter.
3. The method of claim 1, wherein the performing the corresponding anti-freeze operation based on the outlet wind speed, the discharge saturation temperature, and the compressor bottom temperature comprises:
When the air outlet air speed is smaller than a second preset air speed, and the difference value between the exhaust saturation temperature and the bottom temperature of the compressor is larger than or equal to the second preset temperature and smaller than the first preset temperature, modifying the protection parameter of the compressor into a second protection parameter;
and controlling the compressor to run in a frequency-reducing mode according to the second protection parameter, and sending out freezing prompt information.
4. The method of claim 1, wherein the performing the corresponding anti-freeze operation based on the outlet wind speed, the discharge saturation temperature, and the compressor bottom temperature comprises:
and controlling the air conditioner to stop running and sending out freezing prompt information under the condition that the air outlet air speed is smaller than a second preset air speed and the difference value between the exhaust saturation temperature and the bottom temperature of the compressor is smaller than the second preset temperature.
5. The method of claim 1, wherein said performing an anti-freeze operation if said inner coil temperature and said outlet wind speed meet anti-freeze protection conditions comprises:
And under the condition that the temperature of the inner coil pipe is less than or equal to the preset freezing temperature, controlling the compressor of the air conditioner to operate according to the preset freezing prevention frequency.
6. An air conditioner control apparatus for performing the method of any one of claims 1 to 5, the apparatus comprising:
The air conditioner comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the temperature of an inner coil pipe of the air conditioner and the air speed of an air outlet under the condition that the air conditioner operates in a refrigeration mode or a dehumidification mode;
The operation module is used for executing anti-freezing operation under the condition that the temperature of the inner coil pipe and the wind speed of the air outlet meet the anti-freezing protection condition; the operation module is further used for determining that the temperature of the inner coil and the wind speed of the air outlet meet the anti-freezing protection condition and obtaining the exhaust saturation temperature of the air conditioner and the bottom temperature of the compressor under the condition that the temperature of the inner coil is higher than the preset freezing temperature and the wind speed of the air outlet is lower than the first preset wind speed; and executing corresponding anti-freezing operation according to the wind speed of the air outlet, the exhaust saturation temperature and the bottom temperature of the compressor.
7. An air conditioner comprising a controller implementing the method of any one of claims 1-5 by executing a computer program.
8. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when executed by a controller, implements the method according to any of claims 1-5.
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