CN115289618A - Air conditioner control method and device, air conditioner and computer readable storage medium - Google Patents
Air conditioner control method and device, air conditioner and computer readable storage medium Download PDFInfo
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- CN115289618A CN115289618A CN202211000107.7A CN202211000107A CN115289618A CN 115289618 A CN115289618 A CN 115289618A CN 202211000107 A CN202211000107 A CN 202211000107A CN 115289618 A CN115289618 A CN 115289618A
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000007710 freezing Methods 0.000 claims abstract description 168
- 230000008014 freezing Effects 0.000 claims abstract description 62
- 238000007791 dehumidification Methods 0.000 claims abstract description 14
- 238000005057 refrigeration Methods 0.000 claims abstract description 11
- 238000004590 computer program Methods 0.000 claims description 7
- 108010053481 Antifreeze Proteins Proteins 0.000 claims 3
- 230000002528 anti-freeze Effects 0.000 claims 3
- 238000001514 detection method Methods 0.000 description 20
- 230000000694 effects Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 206010060904 Freezing phenomenon Diseases 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 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
- 230000002265 prevention Effects 0.000 description 1
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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
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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
- F24F11/62—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
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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
- F24F11/70—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
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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
- 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
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- 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
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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)
- 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 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 anti-freezing protection condition, performing anti-freezing operation. Because the freezing condition of the heat exchanger can influence the air speed of the air outlet of the air conditioner, the air conditioner can determine whether the anti-freezing protection of the air conditioner should be started according to the temperature of the inner coil and the air speed of the air outlet and the integral freezing condition of the heat exchanger, so that the anti-freezing protection can be started in time, and the starting precision of the anti-freezing protection of the air conditioner can be improved.
Description
Technical Field
The invention relates to the technical field of air conditioner control, in particular to an air conditioner control method and 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 of the air conditioner is often in a low-temperature state, under the condition, when indoor air flows through the heat exchanger, water vapor in the air is easy to condense into dew or even frost on the heat exchanger, so that the freezing phenomenon is caused, and at the moment, the air conditioner can relieve the freezing condition of the heat exchanger by starting 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 the temperature detection device is often arranged on a certain branch of an inner coil of the heat exchanger, so that the air conditioner can only start anti-freezing protection according to the freezing condition of the branch on which the temperature detection device is arranged. 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 start the anti-freezing protection in time, and the problem that the accuracy of the anti-freezing protection starting is low 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 an air conditioner control method, an air conditioner control device, an air conditioner, and a computer readable storage medium, so that the air conditioner can start the anti-freezing protection in time, and the starting accuracy of the anti-freezing protection is improved.
In a first aspect, the present invention provides a method for controlling an air conditioner, the method comprising:
under the condition that the air conditioner operates in a refrigeration mode or a dehumidification mode, obtaining the temperature of an inner coil of the air conditioner and the air speed of an air outlet;
and 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, performing anti-freezing operation.
In the air conditioner control method provided by the embodiment of the present invention, when the air conditioner operates in the cooling mode or the dehumidification mode, the temperature of the inner coil of the air conditioner and the air speed of the air outlet are obtained, and when the temperature of the inner coil and the air speed of the air outlet satisfy the anti-freezing protection condition, the anti-freezing operation is performed. 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 the anti-freezing protection according to the temperature of the inner coil and the air outlet air speed and the integral freezing condition of the heat exchanger, so that the anti-freezing protection can be started in time, and the starting precision of the anti-freezing protection of the air conditioner is improved.
In an alternative embodiment, in the case that the temperature of the inner coil and the wind speed of the outlet meet the anti-freezing protection condition, the performing of the anti-freezing operation 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 a preset freezing temperature and the air speed of the air outlet is lower than a first preset air speed;
and executing corresponding anti-freezing operation according to the air outlet wind speed, the exhaust saturation temperature and the bottom temperature of the compressor.
In the air conditioner control method provided by the embodiment of the present invention, under the condition that the temperature of the inner coil pipe is greater than the preset freezing temperature and the air speed of the air outlet is less 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 performed according to the air speed of the air outlet, the exhaust saturation temperature and the bottom temperature of the compressor. According to the method, the corresponding anti-freezing operation can be executed according to the air outlet air speed, the exhaust saturation temperature and the bottom temperature of the compressor under the condition that the temperature of the inner coil pipe 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 guaranteed.
In an optional embodiment, the performing the corresponding anti-freezing operation according to the outlet wind speed, the exhaust saturation temperature and the compressor bottom temperature includes:
under the condition that the air speed of the air outlet is greater 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 temperature at the bottom of the compressor is greater 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 operate according to the first protection parameter in a frequency reduction mode.
According to the air conditioner control method provided by the embodiment of the invention, under the condition that the air speed of the air outlet is greater 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 greater than or equal to a first preset temperature, the protection parameter of the compressor is modified into a first protection parameter, and the compressor is controlled to operate in a frequency reduction mode according to the first protection parameter. By the method, the protection parameters can be modified according to the current operation state of the air conditioner, so that the safety of the compressor in the frequency reduction operation process and the anti-freezing effect of the air conditioner are ensured.
In an optional embodiment, the performing the corresponding anti-freezing operation according to the outlet wind speed, the exhaust saturation temperature and the compressor bottom temperature includes:
under the condition that the air speed of the air outlet is less than a second preset air speed, and the difference value between the exhaust saturation temperature and the temperature at the bottom of the compressor is greater than or equal to a second preset temperature and less than a first preset temperature, modifying the protection parameter of the compressor into a second protection parameter;
and controlling the compressor to operate in a frequency reduction 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, under the condition that the air speed of the air outlet is less than a second preset air speed, and the difference value between the exhaust saturation temperature and the temperature at the bottom of the compressor is greater than or equal to a second preset temperature and less than a first preset temperature, the protection parameter of the compressor is modified into the second protection parameter, the compressor is controlled to operate in a frequency reduction mode according to the second protection parameter, and the freezing prompt information is sent. By the method, the protection parameters can be modified according to the current operation state of the air conditioner, so that the safety of the compressor in the frequency reduction operation process and the anti-freezing effect of the air conditioner are ensured. In addition, the air conditioner can send out freezing prompt message to remind the user to freeze and overhaul the air conditioner.
In an optional embodiment, the performing the corresponding anti-freezing operation according to the outlet wind speed, the exhaust saturation temperature and the compressor bottom temperature includes:
and 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 a second preset temperature, controlling the air conditioner to stop running and sending out freezing prompt information.
According to the air conditioner control method provided by the embodiment of the invention, under the condition that the air speed of the air outlet is less than the second preset air speed and the difference value between the exhaust saturation temperature and the temperature at the bottom of the compressor is less than the second preset temperature, the air conditioner is controlled to stop running, and the freezing prompt information is sent out. By the method, the air conditioner can be controlled to stop running when the integral frosting condition of the air conditioner is serious, so that the freezing condition of the air conditioner is prevented from being aggravated, and the safety of the air conditioner is improved.
In an alternative embodiment, in the case that the temperature of the inner coil and the wind speed at the wind outlet meet the anti-freezing protection condition, the performing of the anti-freezing operation includes:
and controlling a compressor of the air conditioner to operate according to a preset anti-freezing frequency under the condition that the temperature of the inner coil is less than or equal to a preset freezing temperature. 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 runs 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 and the wind speed of the air outlet meet anti-freezing protection conditions.
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 of the air conditioner and the air speed of the air outlet under the condition that the air conditioner operates in the refrigeration mode or the dehumidification mode, and the operation module can execute the anti-freezing operation under the condition that the temperature of the inner coil pipe and the air speed of the air outlet meet the anti-freezing protection condition. Because the freezing condition of the heat exchanger can influence the air speed of the air outlet of the air conditioner, the air conditioner can determine whether the anti-freezing protection of the air conditioner should be started according to the temperature of the inner coil and the air speed of the air outlet and the integral freezing condition of the heat exchanger, so that the anti-freezing protection can be started in time, and the starting precision of the anti-freezing protection of the air conditioner can be improved.
In an optional embodiment, the operation module is further configured to determine that the temperature of the inner coil and the wind speed at the wind outlet satisfy an anti-freezing protection condition and obtain an exhaust saturation temperature of the air conditioner and a bottom temperature of the compressor when the temperature of the inner coil is greater than a preset freezing temperature and the wind speed at the wind outlet is less than a first preset wind speed; and executing corresponding anti-freezing operation according to the air outlet wind speed, 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, on which a computer program is stored, which, when executed by a controller, implements the 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 method for controlling an air conditioner according to an embodiment of the present invention;
fig. 3 is another schematic flow chart of an air conditioner control method according to an embodiment of the present invention;
fig. 4 is another schematic flow chart of an air conditioner control method according to an embodiment of the present invention;
fig. 5 is another schematic flow chart of a 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.
Description of the reference numerals:
10-an air conditioner; 100-indoor unit; 101-a heat exchanger; 102-an air outlet; 110-an outdoor unit; 111-a compressor; 200-an obtaining module; 210-running the 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, and under the condition, when indoor air flows through the heat exchanger, water vapor in the air is easy to condense into dew or even frost on the heat exchanger, so that a freezing phenomenon is caused, the freezing phenomenon influences the operation effect of the air conditioner, and the refrigeration capacity or the dehumidification 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 water vapor is condensed in an air duct of the air conditioner, and the air duct starts to blow water. At the moment, the air conditioner can relieve the freezing condition of the heat exchanger by starting the 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 the temperature detection device is often arranged on a certain branch of an inner coil of the heat exchanger, so that the air conditioner can only start anti-freezing protection according to the freezing condition of the branch on which the temperature detection device is arranged.
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 actually, that is, there may be a case that other branches of the inner coil pipe are frozen, but the branch where the temperature detection device is located is not frozen, and at this time, the whole freezing condition of the heat exchanger may be serious, but since 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, and therefore, the problems that the anti-freezing protection is not started in time and the accuracy of starting the anti-freezing protection is low exist.
On this basis, the embodiment of the invention provides an air conditioner control method, so that the air conditioner can start the anti-freezing protection in time, and the accuracy of the anti-freezing protection starting is improved.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, which is a block schematic diagram of an air conditioner 10 according to an embodiment of the present invention, 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 multiple branches, and a temperature detection device is disposed on one branch for detecting the temperature of the branch. In a 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 disposed at a bottom of the compressor 111 for detecting a temperature at the bottom 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 in the embodiment of the present invention by executing a computer program.
Embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a controller, can implement the air conditioner control method provided by the embodiments of the present invention.
Next, taking the air conditioner 10 in fig. 1 as an execution subject, an exemplary description is given of an air conditioner control method according to an embodiment of the present invention with reference to a flowchart, specifically, fig. 2 is a flowchart of an air conditioner control method according to an embodiment of the present invention, and please refer to fig. 2, where 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 of the air conditioner and the air speed of an air outlet;
optionally, the temperature of the inner coil is the temperature collected by a temperature collecting device arranged on the inner coil of the air conditioner; the air outlet air speed is the air speed obtained by the speed detection device. It will be understood 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 may acquire the temperature of the inner coil pipe and the wind speed at 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 may determine whether the air conditioner satisfies the anti-freezing protection condition according to the received temperature of the inner coil and the wind speed of the air outlet. It can be understood that if the temperature of the inner coil and the air speed of the air outlet meet the anti-freezing protection condition, it indicates that the heat exchanger has a certain freezing condition, and the air conditioner needs to perform anti-freezing operation at this time to avoid aggravation of the freezing condition, thereby ensuring the reliability and stability of the air conditioner.
In a 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 or not according to a preset time interval; in another possible implementation manner, the air conditioner can judge whether the temperature of the inner coil and the air speed of the air outlet meet the anti-freezing protection condition in real time.
In the air conditioner control method provided by the embodiment of the present invention, when the air conditioner operates in the cooling mode or the dehumidification mode, the temperature of the inner coil of the air conditioner and the air speed of the air outlet are obtained, and when the temperature of the inner coil and the air speed of the air outlet satisfy the anti-freezing protection condition, the anti-freezing operation is performed. Because the freezing condition of the heat exchanger can influence the air speed of the air outlet of the air conditioner, the air conditioner can determine whether the anti-freezing protection of the air conditioner should be started according to the temperature of the inner coil and the air speed of the air outlet and the integral freezing condition of the heat exchanger, so that the anti-freezing protection can be started in time, and the starting precision of the anti-freezing protection of the air conditioner can be improved.
Optionally, because a temperature detection device is disposed on one of the branches of the heat exchanger of the air conditioner, if the temperature acquired by the temperature acquisition device is low, it indicates that a freezing condition may exist on the branch, and at this time, an anti-freezing operation needs to be performed regardless of the wind speed of the air outlet. That is, the anti-freezing protection condition includes that the temperature of the inner coil is equal to or lower than the preset freezing temperature, and the step S21 can be realized by the following steps in addition to fig. 2:
and controlling a compressor of the air conditioner to operate according to the preset anti-freezing frequency under the condition that the temperature of the inner coil pipe is less than or equal to the preset freezing temperature.
Alternatively, the preset freezing temperature and the preset anti-freezing frequency may be preset according to the actual operation condition 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, it is determined that the air conditioner satisfies the anti-freezing protection condition no matter whether the obtained wind speed of the air outlet is large or small, and therefore, the compressor of the air conditioner may 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, that is, if the temperature of the inner coil is less than or equal to the preset freezing temperature, the compressor should be operated in a frequency reduction mode. In one example, the predetermined freeze prevention 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 the air speed of the air outlet is reduced, so that if the temperature of the inner coil is larger 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 air speed can be set according to the practical application condition of the air conditioner 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 is higher than the preset freezing temperature, and the air speed of the air outlet is lower than the first preset air speed. In addition, in order to ensure the anti-freezing effect of the air conditioner, the air conditioner can also execute corresponding anti-freezing operation according to the actual running state under the condition that the temperature of the inner coil 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 schematic flow chart of the air conditioner control method according to the embodiment of the present invention, please refer to fig. 3, and the step S21 can be further implemented by the following steps:
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 the inner coil is higher than a preset freezing temperature and the air speed of the air outlet is lower than a first preset air speed;
optionally, if the temperature of the inner coil pipe is greater than the preset freezing temperature and the air speed of the air outlet is less than a first preset air speed, it is indicated that the air conditioner meets the anti-freezing protection condition.
In one example, the first preset wind speed may be 3m/s.
Optionally, the temperature of the bottom of the compressor is detected by a temperature detection device arranged at the bottom of the compressor; the exhaust saturation temperature is a temperature corresponding to the exhaust pressure detected by the pressure detection device.
In this embodiment, the air conditioner may obtain a current compressor bottom temperature from a temperature detecting device disposed at a bottom of the compressor and a current exhaust pressure from a pressure detecting device in a case where the temperature of the inner coil is greater than a preset freezing temperature and the air speed of the air outlet is less than a first preset air speed, and determine a current exhaust saturation temperature according to the exhaust pressure.
In one example, a calculation formula may be set in advance in the air conditioner, 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 the corresponding exhaust saturation temperature may be stored in the air conditioner in advance, and the air conditioner may find the corresponding exhaust saturation temperature according to the exhaust pressure after obtaining the exhaust pressure.
And S21-2, executing corresponding anti-freezing operation according to the air outlet air speed, the exhaust saturation temperature and the bottom temperature of the compressor.
Optionally, the air conditioner may determine an anti-freezing operation that should be currently performed according to the air outlet air speed, the exhaust saturation temperature, and the compressor bottom temperature, and perform the anti-freezing operation.
Optionally, the air conditioner may perform anti-freezing operation by controlling the compressor to perform frequency-down operation, so as to avoid the phenomena of overvoltage, overload and the like during the operation of the compressor, thereby endangering the operation safety of the air conditioner, and the air conditioner may be controlled to operate according to certain protection parameters to ensure the operation effect of the compressor. In this case, in order to ensure the anti-freezing effect of the air conditioner, the air conditioner may modify the protection parameters of the compressor according to the air speed at the air outlet, the exhaust saturation temperature and the bottom temperature of the compressor, so as to ensure the safety of the frequency reduction operation process of the compressor and the anti-freezing effect of the air conditioner.
Specifically, on the basis of fig. 3, fig. 4 is another schematic flow chart of the air conditioner control method according to the embodiment of the present invention, please refer to fig. 4, where the step S21-2 can be further implemented by the following steps:
s21-2-1, modifying the protection parameter of the compressor into a first protection parameter under the conditions that the air speed of the air outlet is greater than or equal to a second preset air speed and smaller than a first preset air speed, and the difference between the exhaust saturation temperature and the bottom temperature of the compressor is greater than or equal to a first preset temperature;
alternatively, the second preset wind speed and the first preset temperature may be set in advance according to an actual operating condition and stored in the air conditioner. It will be appreciated that the second predetermined wind speed is less than the first predetermined 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 the same as the preset freezing temperature, for example, 5 ℃, or may not be the same as the preset freezing temperature, which is not limited in the present invention.
Optionally, the protection parameters of the compressor include a downconversion parameter, which may be a compressor coil downconversion temperature, and a shutdown parameter, which may be a protection shutdown temperature, in one possible implementation.
In this embodiment, the air conditioner may modify the current compressor coil down-frequency temperature to the first compressor coil down-frequency temperature and modify the current protection shutdown temperature to the first protection shutdown temperature when the air speed at the air outlet is greater than or equal to the second preset air speed and less than the first preset air speed and the difference between the exhaust saturation temperature and the temperature at the bottom of the compressor is greater than or equal to the first preset temperature.
Optionally, the first compressor coil downconversion temperature may be a sum of the current compressor coil downconversion temperature and a preset first downconversion temperature, and the first protection shutdown temperature may be a sum of the current protection shutdown temperature and a preset first protection temperature.
In one example, the predetermined first downconversion temperature and the predetermined first protection temperature may both be 1 ℃.
And S21-2-2, controlling the compressor to perform frequency reduction operation according to the first protection parameter.
In this embodiment, the air conditioner may control the compressor to operate in a frequency down to a minimum frequency according to the first protection parameter. In one example, the minimum frequency may be 22HZ.
In addition, on the basis of fig. 3, fig. 5 is another schematic flow chart of the air conditioner control method according to the embodiment of the present invention, please refer to fig. 5, and the step S21-2 can be further implemented by the following steps:
s21-2-3, modifying the protection parameter of the compressor into a second protection parameter under the conditions that the air speed of the air outlet is less than a second preset air speed, and the difference between the exhaust saturation temperature and the temperature at the bottom of the compressor is greater than or equal to the second preset temperature and less than the first preset temperature;
alternatively, the second preset temperature may be set in advance according to actual operating conditions and stored in the air conditioner. It will be appreciated that the second predetermined temperature is less than the first predetermined 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 downconversion parameter, which may be a compressor coil downconversion temperature, and a shutdown parameter, which may be a protection shutdown temperature, in one possible implementation.
In this embodiment, the air conditioner may modify the current compressor coil down-frequency temperature to a second compressor coil down-frequency temperature and modify the current protection shutdown temperature to a second protection shutdown temperature when the air speed at the air outlet is less than a second preset air speed, and the difference between the exhaust saturation temperature and the temperature at the bottom of the compressor is greater than or equal to the second preset temperature and less than the first preset temperature.
Optionally, the second compressor coil downconversion temperature may be a sum of the current compressor coil downconversion temperature and a preset second downconversion temperature, and the second protection shutdown temperature may be a sum of the current protection shutdown temperature and a preset second protection temperature.
In one example, the preset second downconversion temperature and the preset second protection temperature may both be 2 ℃.
And S21-2-4, controlling the compressor to perform frequency reduction operation according to the second protection parameter, and sending out freezing prompt information.
In this embodiment, the air conditioner may control the compressor to operate at the 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 the user should perform maintenance. In a possible implementation manner, the air conditioner may be provided with a freeze indicator, such as an indicator light, and the controller may control the indicator light to be turned on to send out a freeze indicator.
Optionally, in order to ensure the safety of the air conditioner, the air conditioner may also stop running when the freezing condition of the heat exchanger is severe, so as to avoid aggravation of the freezing condition and harm to the running safety. Specifically, on the basis of fig. 3, the step S21-2 may be further implemented by:
and under the condition that the air speed of the air outlet is less than a second preset air speed and the difference value between the exhaust saturation temperature and the bottom temperature of the compressor is less than a second preset temperature, controlling the air conditioner to stop running and sending out freezing prompt information.
In this embodiment, if the air speed at the air outlet is less than the second preset air speed, and the difference between the exhaust saturation temperature and the temperature at the bottom of the compressor is less than the second preset temperature, it indicates that the freezing condition of the heat exchanger is severe at this time, so that the air conditioner can be controlled to stop operating, and a freezing prompt message is sent.
Optionally, the freeze prompt message is sent by the air conditioner to prompt a user that the air conditioner should be overhauled. In a possible implementation mode, the air conditioner can send the freezing prompt message to the intelligent remote controller or the air conditioner control APP arranged on the terminal equipment, and then the intelligent remote controller or the air conditioner control APP can inform a user of overhauling.
In order to implement the corresponding steps in the above-described embodiments and various possible modes, an implementation mode of the 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 the present embodiment are the same as those of the above embodiments, and for the sake of brief description, no part of the present embodiment is mentioned, and reference may be made to the corresponding contents in the above embodiments. The air conditioner control device includes: an acquisition module 200 and an execution module 210.
The acquiring module 200 is configured to acquire an inner coil temperature and an air outlet air speed of the air conditioner when the air conditioner operates in a cooling mode or a dehumidification mode;
it is understood that the obtaining module 200 may be configured to perform the step S20;
the operation module 210 is configured to execute 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 can be used to execute the step S21.
Optionally, the operation module 210 is further configured to determine that the temperature of the inner coil and the wind speed of the wind outlet meet an anti-freezing protection condition and obtain an exhaust saturation temperature of the air conditioner and a bottom temperature of the compressor under the condition that the temperature of the inner coil is greater than a preset freezing temperature and the wind speed of the wind outlet is less than a first preset wind speed; and executing corresponding anti-freezing operation according to the air outlet air speed, the exhaust saturation temperature and the bottom temperature of the compressor.
It is understood that the operation module 210 can be used to execute the steps S21-1 to S21-2.
Optionally, the operation module 210 is further configured to modify the protection parameter of the compressor into the first protection parameter when the air speed at the air outlet is greater than or equal to a second preset air speed and less than the first 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 first preset temperature; and controlling the compressor to operate according to the first protection parameter in a frequency reduction mode.
It is understood that the operation module 210 can be used to execute the above steps S21-2-1 to S21-2-2.
Optionally, the operation module 210 is further configured to modify the protection parameter of the compressor into a second protection parameter when the air speed at the air outlet is less than a second preset air speed, and the difference between the exhaust saturation temperature and the temperature at the bottom of the compressor is greater than or equal to a second preset temperature and less than the first preset temperature; and controlling the compressor to operate in a frequency reduction mode according to the second protection parameter, and sending freezing prompt information.
It is understood that the operation module 210 can be used to execute the above steps S21-2-3 to S21-2-4.
Optionally, the operation module 210 is further configured to control the air conditioner to stop operating and send a freezing prompt message when the air speed at the air outlet 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 a second preset temperature.
Optionally, the operation module 210 is further configured to control the air conditioner to operate according to a preset anti-freezing frequency when the temperature of the inner coil is less than or equal to the 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 of the air conditioner and the air speed of the air outlet under the condition that the air conditioner operates in the refrigeration mode or the dehumidification mode, and the operation module can execute the anti-freezing operation under the condition that the temperature of the inner coil pipe and the air speed of the air outlet meet the anti-freezing 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 the anti-freezing protection according to the temperature of the inner coil and the air outlet air speed and the integral freezing condition of the heat exchanger, so that the anti-freezing protection can be 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 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 (10)
1. An air conditioner control method, characterized in that the method comprises:
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 anti-freezing protection condition, performing anti-freezing operation.
2. The method of claim 1, wherein the performing a freeze-proof operation in the event that the inside coil temperature and the outlet wind speed satisfy a freeze-proof condition comprises:
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 a preset freezing temperature and the air speed of the air outlet is lower than a first preset air speed;
and executing corresponding anti-freezing operation according to the air outlet air speed, the exhaust saturation temperature and the bottom temperature of the compressor.
3. The method of claim 2, wherein the performing the corresponding anti-freeze operation as a function of the outlet wind speed, the exhaust saturation temperature, and the compressor bottom temperature comprises:
under the condition that the air speed of the air outlet is greater 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 temperature at the bottom of the compressor is greater 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 perform frequency reduction operation according to the first protection parameter.
4. The method of claim 2, wherein the performing the corresponding anti-freeze operation as a function of the outlet wind speed, the exhaust saturation temperature, and the compressor bottom temperature comprises:
under the condition that the air speed of the air outlet is less than a second preset air speed, and the difference value between the exhaust saturation temperature and the temperature at the bottom of the compressor is greater than or equal to a second preset temperature and less than a first preset temperature, modifying the protection parameter of the compressor into a second protection parameter;
and controlling the compressor to operate in a frequency reduction mode according to the second protection parameter, and sending out freezing prompt information.
5. The method of claim 2, wherein the performing a corresponding anti-freeze operation as a function of the outlet wind speed, the exhaust saturation temperature, and the compressor bottom temperature comprises:
and under the condition that the air speed of the air outlet is less than a second preset air speed and the difference value between the exhaust saturation temperature and the bottom temperature of the compressor is less than a second preset temperature, controlling the air conditioner to stop running and sending out freezing prompt information.
6. The method of claim 1, wherein the performing an anti-freezing operation in case the inner coil temperature and the outlet wind speed satisfy an anti-freezing protection condition comprises:
and controlling a compressor of the air conditioner to operate according to a preset anti-freezing frequency under the condition that the temperature of the inner coil is less than or equal to a preset freezing temperature.
7. An air conditioner control device, characterized in that the device comprises:
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 runs 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.
8. The device of claim 7, wherein the operation module is further configured to determine that the temperature of the inner coil and the wind speed at the wind outlet satisfy an anti-freezing protection condition and obtain an exhaust saturation temperature of the air conditioner and a bottom temperature of the compressor when the temperature of the inner coil is greater than a preset freezing temperature and the wind speed at the wind outlet is less than a first preset wind speed; and executing corresponding anti-freezing operation according to the air outlet wind speed, the exhaust saturation temperature and the bottom temperature of the compressor.
9. An air conditioner comprising a controller that implements the method of any one of claims 1-6 by executing a computer program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a controller, carries out the method according to any one of claims 1-6.
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