CN105423495B - Air conditioner and its anti-freeze control method and device - Google Patents
Air conditioner and its anti-freeze control method and device Download PDFInfo
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- CN105423495B CN105423495B CN201510943080.9A CN201510943080A CN105423495B CN 105423495 B CN105423495 B CN 105423495B CN 201510943080 A CN201510943080 A CN 201510943080A CN 105423495 B CN105423495 B CN 105423495B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 108010053481 Antifreeze Proteins Proteins 0.000 title claims abstract 7
- 230000002528 anti-freeze Effects 0.000 title claims abstract 7
- 238000007710 freezing Methods 0.000 claims description 82
- 230000008014 freezing Effects 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000006467 substitution reaction 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
- F24F11/62—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
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of air conditioner and its anti-freeze control method and device, the described method comprises the following steps：The suction temperature of compressor in the coil temperature and outdoor unit of evaporator in indoor set is obtained, and calculates the temperature gap between coil temperature and suction temperature；Coil temperature and temperature gap are judged；If it is determined that coil temperature is more than the first temperature threshold and is less than or equal to second temperature threshold value, and temperature gap is more than or equal to the 3rd temperature threshold, then controls air conditioner to enter anti-freeze protected mode.This method can effectively control air conditioner to enter anti-freeze protected mode, so as to prevent air conditioner from breaking down, improve the service life and Consumer's Experience of air conditioner.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an anti-freezing control method of an air conditioner, an anti-freezing control device of the air conditioner and the air conditioner.
Background
At present, when the air conditioner is applied to some special occasions, for example, when the outdoor unit is still operated in a cooling mode when the ambient temperature of the outdoor unit is relatively low, an indoor heat exchanger in the air conditioner is easy to frost and freeze, thereby affecting the normal operation of the air conditioner. Generally, when frost and ice formation occurs to an indoor heat exchanger, an air conditioner performs an anti-freezing protection function.
In the related art, whether the air conditioner has the anti-freezing protection function or not is judged by detecting the temperature of the middle part of a coil pipe on a certain heat exchange flow path in an indoor evaporator (when the indoor heat exchanger is used for refrigeration or dehumidification operation). However, the heat exchange flow path of the indoor evaporator is usually more than 2 paths, when the indoor evaporator has a drift phenomenon due to reasons such as production and manufacturing, the temperature of a part of the heat exchange flow path of the indoor evaporator is already low, the indoor evaporator has frosting and icing phenomena, the temperature of the middle part of the coil is still high, and the condition of entering the anti-freezing protection function cannot be met at this moment, so that the anti-freezing protection fails, thereby causing the air conditioner to malfunction, further affecting the service life of the air conditioner, and reducing user experience.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, an object of the present invention is to provide an anti-freezing control method for an air conditioner, which can effectively control the air conditioner to enter an anti-freezing protection mode, thereby preventing the air conditioner from malfunctioning, and improving the service life and user experience of the air conditioner.
In order to achieve the above object, an embodiment of an aspect of the present invention provides an anti-freezing control method for an air conditioner, where the air conditioner includes an indoor unit and an outdoor unit, and the method includes the following steps: acquiring the temperature of a coil of an evaporator in the indoor unit and the return air temperature of a compressor in the outdoor unit, and calculating the temperature difference between the coil temperature and the return air temperature; judging the temperature of the coil pipe and the temperature difference value; and if the temperature of the coil is judged to be greater than the first temperature threshold value and less than or equal to the second temperature threshold value, and the temperature difference value is greater than or equal to a third temperature threshold value, controlling the air conditioner to enter an anti-freezing protection mode.
According to the anti-freezing control method of the air conditioner, the temperature of the coil of the evaporator in the indoor unit and the return air temperature of the compressor in the outdoor unit are obtained, the temperature difference between the temperature of the coil and the return air temperature is calculated, the temperature of the coil and the temperature difference are judged, and if the temperature of the coil is larger than a first temperature threshold and smaller than or equal to a second temperature threshold, and the temperature difference is larger than or equal to a third temperature threshold, the air conditioner is controlled to enter an anti-freezing protection mode. Therefore, the anti-freezing control method provided by the embodiment of the invention can effectively control the air conditioner to enter the anti-freezing protection mode according to the temperature of the coil and the temperature difference between the temperature of the coil and the return air temperature, and avoid the problem of anti-freezing protection failure caused by bias flow of the indoor heat exchanger in the air conditioner, so that the air conditioner is effectively prevented from malfunctioning, the service life of the air conditioner is prolonged, the user experience of the air conditioner is improved, and the reliability is higher.
According to an embodiment of the present invention, the above-mentioned freezing prevention control method for an air conditioner further includes: and if the temperature of the coil pipe is judged to be less than or equal to the first temperature threshold value and lasts for a first preset time, controlling the air conditioner to enter the anti-freezing protection mode.
According to an embodiment of the present invention, when the air conditioner enters the anti-freezing protection mode, the compressor is controlled to stop, the outdoor fan in the outdoor unit is controlled to stop operating, and the indoor fan in the indoor unit is controlled to operate at a preset rotation speed.
According to an embodiment of the present invention, after the air conditioner enters the anti-freezing protection mode, if it is determined that the temperature of the coil is greater than or equal to a fourth temperature threshold value for a second preset time, the air conditioner is controlled to exit the anti-freezing protection mode.
In order to achieve the above object, an embodiment of another aspect of the present invention provides an anti-freezing control device for an air conditioner, the air conditioner including an indoor unit and an outdoor unit, the device including: the temperature acquisition module is used for acquiring the temperature of a coil pipe of an evaporator in the indoor unit and the return air temperature of a compressor in the outdoor unit; and the control module is used for calculating a temperature difference value between the temperature of the coil pipe and the return air temperature, judging the temperature of the coil pipe and the temperature difference value, and controlling the air conditioner to enter an anti-freezing protection mode when the temperature of the coil pipe is judged to be greater than a first temperature threshold value and less than or equal to a second temperature threshold value and the temperature difference value is greater than or equal to a third temperature threshold value.
According to the anti-freezing control device of the air conditioner, the temperature of the coil of the evaporator in the indoor unit and the return air temperature of the compressor in the outdoor unit are obtained through the temperature obtaining module, the control module calculates the temperature difference between the coil temperature and the return air temperature, judges the coil temperature and the temperature difference, and controls the air conditioner to enter the anti-freezing protection mode when the coil temperature is judged to be greater than the first temperature threshold value and smaller than or equal to the second temperature threshold value and the temperature difference is larger than or equal to the third temperature threshold value. Therefore, the anti-freezing control device provided by the embodiment of the invention can effectively control the air conditioner to enter the anti-freezing protection mode according to the temperature of the coil and the temperature difference between the temperature of the coil and the return air temperature, and avoid the problem of anti-freezing protection failure caused by bias flow of the indoor heat exchanger in the air conditioner, so that the air conditioner is effectively prevented from malfunctioning, the service life of the air conditioner is prolonged, the user experience of the air conditioner is improved, and the reliability is higher.
According to one embodiment of the invention, the control module controls the air conditioner to enter the anti-freezing protection mode when the coil temperature is judged to be less than or equal to the first temperature threshold value and lasts for a first preset time.
According to an embodiment of the present invention, when the control module controls the air conditioner to enter the anti-freezing protection mode, the control module controls the compressor to stop, controls the outdoor fan in the outdoor unit to stop operating, and controls the indoor fan in the indoor unit to operate at a preset rotation speed.
According to an embodiment of the invention, after the control module controls the air conditioner to enter the anti-freezing protection mode, the control module controls the air conditioner to exit the anti-freezing protection mode when the control module determines that the temperature of the coil is greater than or equal to a fourth temperature threshold value and lasts for a second preset time.
In addition, the embodiment of the invention also provides an air conditioner, which comprises the anti-freezing control device of the air conditioner.
According to the air conditioner, the anti-freezing protection mode can be effectively entered through the anti-freezing control device of the air conditioner, the problem that anti-freezing protection is invalid due to the fact that the indoor heat exchanger in the air conditioner is deflected is solved, accordingly, faults are effectively prevented, the service life is prolonged, and user experience is improved.
Drawings
Fig. 1 is a flowchart of an anti-freezing control method of an air conditioner according to an embodiment of the present invention.
Fig. 2 is a block diagram of an anti-freezing control apparatus of an air conditioner according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
An air conditioner and an anti-freezing control method and apparatus thereof according to an embodiment of the present invention will be described with reference to the accompanying drawings.
Fig. 1 is a flowchart of an anti-freezing control method of an air conditioner according to an embodiment of the present invention, wherein the air conditioner includes an indoor unit and an outdoor unit. As shown in fig. 1, the anti-freezing control method of the air conditioner includes the following steps:
and S1, acquiring the coil temperature of an evaporator in the indoor unit and the return air temperature of a compressor in the outdoor unit, and calculating the temperature difference between the coil temperature and the return air temperature.
And S2, judging the temperature of the coil and the temperature difference value.
And S3, if the temperature of the coil is judged to be greater than the first temperature threshold value and less than or equal to the second temperature threshold value, and the temperature difference value is greater than or equal to the third temperature threshold value, controlling the air conditioner to enter an anti-freezing protection mode. The first temperature threshold, the second temperature threshold, and the third temperature threshold may be calibrated according to actual conditions, for example, the first temperature threshold may be 2 ℃, the second temperature threshold may be 7 ℃, and the third temperature threshold may be 10 ℃.
According to one embodiment of the invention, if the temperature of the coil is judged to be less than or equal to the first temperature threshold value for the first preset time, the air conditioner is controlled to enter the anti-freezing protection mode. The first preset time may be calibrated according to an actual situation, for example, the first preset time may be 5 min.
According to one embodiment of the present invention, when the air conditioner enters the anti-freezing protection mode, the compressor is controlled to stop, the outdoor fan in the outdoor unit is controlled to stop operating, and the indoor fan in the indoor unit is controlled to operate at a preset rotation speed. The preset rotating speed can be calibrated according to actual conditions.
Specifically, when the air conditioner is operated in the cooling mode or the dehumidifying mode, the coil temperature T2 of the evaporator in the indoor unit and the return air temperature Th of the compressor in the outdoor unit are obtained in real time. If the first temperature threshold TE1 is greater than or equal to the T2 and less than or equal to the second temperature threshold TE2, T2-Th is greater than or equal to the third temperature threshold TE3, or T2 and less than or equal to the TE1 and lasts for a first preset time T1, the air conditioner is controlled to enter an anti-freezing protection mode, at the moment, the compressor is stopped, the outdoor fan stops running, and the indoor fan runs according to the preset rotating speed.
According to an embodiment of the invention, after the air conditioner enters the anti-freezing protection mode, if the temperature of the coil is judged to be greater than or equal to the fourth temperature threshold value for a second preset time, the air conditioner is controlled to exit the anti-freezing protection mode. That is, after the air conditioner enters the anti-freezing protection mode, the temperature of the coil of the evaporator is obtained in real time and is judged, and when the temperature of the coil is greater than or equal to the fourth temperature threshold TE4 and lasts for the second preset time t2, the air conditioner is controlled to exit the anti-freezing protection mode.
According to the anti-freezing control method of the air conditioner, the temperature of the coil of the evaporator in the indoor unit and the return air temperature of the compressor in the outdoor unit are obtained, the temperature difference between the temperature of the coil and the return air temperature is calculated, the temperature of the coil and the temperature difference are judged, and if the temperature of the coil is larger than a first temperature threshold and smaller than or equal to a second temperature threshold, and the temperature difference is larger than or equal to a third temperature threshold, the air conditioner is controlled to enter an anti-freezing protection mode. Therefore, the anti-freezing control method provided by the embodiment of the invention can effectively control the air conditioner to enter the anti-freezing protection mode according to the temperature of the coil and the temperature difference between the temperature of the coil and the return air temperature, and avoid the problem of anti-freezing protection failure caused by bias flow of the indoor heat exchanger in the air conditioner, so that the air conditioner is effectively prevented from malfunctioning, the service life of the air conditioner is prolonged, the user experience of the air conditioner is improved, and the reliability is higher.
Fig. 2 is a block diagram of an anti-freezing control apparatus of an air conditioner according to an embodiment of the present invention, wherein the air conditioner includes an indoor unit and an outdoor unit. As shown in fig. 2, the freezing prevention control device of the air conditioner includes: a temperature acquisition module 10 and a control module 20.
The temperature obtaining module 10 is configured to obtain a temperature of a coil of an evaporator in the indoor unit and a temperature of return air of a compressor in the outdoor unit. The control module 20 is configured to calculate a temperature difference between the coil temperature and the return air temperature, determine the coil temperature and the temperature difference, and control the air conditioner to enter an anti-freezing protection mode when it is determined that the coil temperature is greater than the first temperature threshold and less than or equal to the second temperature threshold, and the temperature difference is greater than or equal to the third temperature threshold.
According to one embodiment of the invention, the control module 20 controls the air conditioner to enter the anti-freezing protection mode when the coil temperature is judged to be less than or equal to the first temperature threshold value for the first preset time.
According to an embodiment of the present invention, when the control module 20 controls the air conditioner to enter the anti-freezing protection mode, the control module 20 controls the compressor to stop, controls the outdoor fan in the outdoor unit to stop operating, and controls the indoor fan in the indoor unit to operate at the preset rotation speed.
Specifically, when the air conditioner operates in the cooling mode or the dehumidifying mode, the coil temperature T2 of the evaporator in the indoor unit and the return air temperature Th of the compressor in the outdoor unit may be respectively obtained in real time by the temperature sensors. If the first temperature threshold TE1 is greater than or equal to the T2 and less than or equal to the second temperature threshold TE2, the T2-Th is greater than or equal to the third temperature threshold TE3, or the T2 is less than or equal to the TE1 and lasts for a first preset time T1, the control module 20 controls the air conditioner to enter an anti-freezing protection mode, at the moment, the compressor is stopped, the outdoor fan stops running, and the indoor fan runs according to a preset rotating speed.
According to an embodiment of the present invention, after the control module 20 controls the air conditioner to enter the anti-freezing protection mode, the control module 20 controls the air conditioner to exit the anti-freezing protection mode when the control module 20 determines that the temperature of the coil is greater than or equal to the fourth temperature threshold for the second preset time. That is, after the air conditioner enters the anti-freezing protection mode, the temperature of the coil of the evaporator is obtained in real time and is judged, and when the temperature of the coil is greater than or equal to the fourth temperature threshold TE4 and lasts for the second preset time t2, the control module 20 controls the air conditioner to exit the anti-freezing protection mode.
According to the anti-freezing control device of the air conditioner, the temperature of the coil of the evaporator in the indoor unit and the return air temperature of the compressor in the outdoor unit are obtained through the temperature obtaining module, the control module calculates the temperature difference between the coil temperature and the return air temperature, judges the coil temperature and the temperature difference, and controls the air conditioner to enter the anti-freezing protection mode when the coil temperature is judged to be greater than the first temperature threshold value and smaller than or equal to the second temperature threshold value and the temperature difference is larger than or equal to the third temperature threshold value. Therefore, the anti-freezing control device provided by the embodiment of the invention can effectively control the air conditioner to enter the anti-freezing protection mode according to the temperature of the coil and the temperature difference between the temperature of the coil and the return air temperature, and avoid the problem of anti-freezing protection failure caused by bias flow of the indoor heat exchanger in the air conditioner, so that the air conditioner is effectively prevented from malfunctioning, the service life of the air conditioner is prolonged, the user experience of the air conditioner is improved, and the reliability is higher.
In addition, the embodiment of the invention also provides an air conditioner, which comprises the anti-freezing control device of the air conditioner.
According to the air conditioner, the anti-freezing protection mode can be effectively entered through the anti-freezing control device of the air conditioner, the problem that anti-freezing protection is invalid due to the fact that the indoor heat exchanger in the air conditioner is deflected is solved, accordingly, faults are effectively prevented, the service life is prolonged, and user experience is improved.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (7)
1. An anti-freezing control method of an air conditioner is characterized in that the air conditioner comprises an indoor unit and an outdoor unit, and the method comprises the following steps:
acquiring the temperature of a coil of an evaporator in the indoor unit and the return air temperature of a compressor in the outdoor unit, and calculating the temperature difference between the coil temperature and the return air temperature;
judging the temperature of the coil pipe and the temperature difference value;
if the temperature of the coil is judged to be larger than a first temperature threshold value and smaller than or equal to a second temperature threshold value, and the temperature difference value is larger than or equal to a third temperature threshold value, controlling the air conditioner to enter an anti-freezing protection mode; or,
and if the temperature of the coil pipe is judged to be less than or equal to the first temperature threshold value and lasts for a first preset time, controlling the air conditioner to enter the anti-freezing protection mode.
2. The freezing prevention control method of an air conditioner as claimed in claim 1, wherein when the air conditioner enters the freezing prevention protection mode, the compressor is controlled to stop, an outdoor fan of the outdoor unit is controlled to stop operating, and an indoor fan of the indoor unit is controlled to operate at a preset rotation speed.
3. The method as claimed in claim 2, wherein after the air conditioner enters the anti-freeze protection mode, if it is determined that the coil temperature is greater than or equal to a fourth temperature threshold for a second preset time, the air conditioner is controlled to exit the anti-freeze protection mode.
4. An anti-freezing control device of an air conditioner, the air conditioner comprising an indoor unit and an outdoor unit, the device comprising:
the temperature acquisition module is used for acquiring the temperature of a coil pipe of an evaporator in the indoor unit and the return air temperature of a compressor in the outdoor unit;
the control module is used for calculating a temperature difference value between the temperature of the coil and the return air temperature, judging the temperature of the coil and the temperature difference value, and controlling the air conditioner to enter an anti-freezing protection mode when the temperature of the coil is judged to be greater than a first temperature threshold value and smaller than or equal to a second temperature threshold value and the temperature difference value is greater than or equal to a third temperature threshold value; or the control module controls the air conditioner to enter the anti-freezing protection mode when judging that the temperature of the coil is less than or equal to the first temperature threshold value and lasts for a first preset time.
5. The apparatus of claim 4, wherein the control module controls the compressor to stop, controls the outdoor fan of the outdoor unit to stop, and controls the indoor fan of the indoor unit to operate at a predetermined speed when the control module controls the air conditioner to enter the anti-freeze protection mode.
6. The apparatus of claim 5, wherein after the control module controls the air conditioner to enter the freeze protection mode, the control module controls the air conditioner to exit the freeze protection mode when the control module determines that the coil temperature is greater than or equal to a fourth temperature threshold for a second predetermined time.
7. An air conditioner characterized by comprising the anti-freezing control device of the air conditioner as claimed in any one of claims 4 to 6.
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| CN201510943080.9A CN105423495B (en) | 2015-12-16 | 2015-12-16 | Air conditioner and its anti-freeze control method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510943080.9A CN105423495B (en) | 2015-12-16 | 2015-12-16 | Air conditioner and its anti-freeze control method and device |
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| CN105423495B true CN105423495B (en) | 2018-03-27 |
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| CN106016586A (en) * | 2016-05-18 | 2016-10-12 | 珠海格力电器股份有限公司 | Over-temperature protection method and system |
| CN106196428B (en) * | 2016-07-01 | 2019-04-26 | 美的集团武汉制冷设备有限公司 | Air conditioner and its anti-freeze control method |
| CN106196455B (en) * | 2016-07-15 | 2019-02-05 | 珠海格力电器股份有限公司 | Motor control method and system and air conditioner |
| CN106288160B (en) * | 2016-08-08 | 2019-04-09 | 美的集团武汉制冷设备有限公司 | A kind of cryogenic refrigeration control method, low-temperature refrigeration control device and air conditioner |
| CN107152758A (en) * | 2017-05-22 | 2017-09-12 | 广东美的制冷设备有限公司 | Air conditioner anti-freeze protects control method and device |
| CN108224703A (en) * | 2017-12-25 | 2018-06-29 | 青岛海尔空调电子有限公司 | The control method of air-conditioning |
| CN108444046A (en) * | 2018-02-14 | 2018-08-24 | 青岛海尔空调器有限总公司 | Indoor unit anti-freeze control method for air conditioner |
| CN108317669B (en) * | 2018-02-14 | 2020-08-25 | 青岛海尔空调器有限总公司 | Anti-freezing control method for indoor unit of air conditioner |
| CN108413564B (en) * | 2018-02-14 | 2020-11-27 | 青岛海尔空调器有限总公司 | Indoor unit antifreeze control method for air conditioner and air conditioner |
| CN108518805B (en) * | 2018-05-10 | 2021-03-16 | 广东美的制冷设备有限公司 | Operation control method, operation control device, air conditioner and computer readable storage medium |
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