CN105423495A - Air conditioner as well as freeze control method and device thereof - Google Patents
Air conditioner as well as freeze control method and device thereof Download PDFInfo
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- CN105423495A CN105423495A CN201510943080.9A CN201510943080A CN105423495A CN 105423495 A CN105423495 A CN 105423495A CN 201510943080 A CN201510943080 A CN 201510943080A CN 105423495 A CN105423495 A CN 105423495A
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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
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
- F24F11/64—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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- 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 an air conditioner as well as a freeze control method and device thereof. The freeze control method comprises the following steps of acquiring the coil temperature of an evaporator in an indoor unit and the back temperature of a compressor in an outdoor unit, and calculating the temperature difference value of the coil temperature and the back temperature; judging the coil temperature and the temperature difference value; and if the coil temperature is judged to be higher than a first temperature threshold and lower than or equal to a second temperature threshold and the temperature difference value is higher than or equal to a third temperature threshold, controlling the air conditioner to enter a freeze protection mode. By using the method, the air conditioner can be effectively prevented from entering the freeze protection mode, so that the air conditioner is prevented from having a fault, the service life the air conditioner is prolonged, and the user experience is improved.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly a kind of anti-freeze control method of air-conditioner, a kind of anti-freeze control device of air-conditioner and a kind of air-conditioner.
Background technology
At present, when air-conditioner is applied to some special occasions, during as still run in a chiller mode when off-premises station environment temperature is lower, the indoor heat exchanger in air-conditioner is easy to frosting and freezes, thus affects the normal operation of air-conditioner.Usually, when indoor heat exchanger occurs frosting and be icing, air-conditioner will perform anti-freeze defencive function.
In correlation technique, by the coil pipe middle portion temperature on a certain heat exchange stream in detection indoor evaporator (when refrigeration or dehumidifying run, indoor heat exchanger is evaporimeter) to judge whether air-conditioner enters anti-freeze defencive function.But; the heat exchange stream of usual indoor evaporator is more than 2 tunnels; when causing indoor evaporator to occur Biased flow phenomenon due to reasons such as the manufacturings; may occur that the temperature of a part of heat exchange stream of indoor evaporator is very low; and there is frosting and icing phenomenon in indoor evaporator; and coil pipe middle portion temperature is still higher; now cannot meet the condition entering anti-freeze defencive function; therefore; anti-freeze shielding failure; thus cause air-conditioner to break down, and then affect the service life of air-conditioner, reduce Consumer's Experience.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is the anti-freeze control method proposing a kind of air-conditioner, effectively can control air-conditioner and enter anti-freeze protected mode, thus prevent air-conditioner from breaking down, and improves service life and the Consumer's Experience of air-conditioner.
For achieving the above object, one aspect of the present invention embodiment proposes a kind of anti-freeze control method of air-conditioner, described air-conditioner comprises indoor set and off-premises station, said method comprising the steps of: the suction temperature obtaining compressor in the coil temperature of evaporimeter in described indoor set and described off-premises station, and calculate the temperature gap between described coil temperature and described suction temperature; Described coil temperature and described temperature gap are judged; If judge that described coil temperature is greater than the first temperature threshold and is less than or equal to the second temperature threshold, and described temperature gap is more than or equal to the 3rd temperature threshold, then controls described air-conditioner and enter anti-freeze protected mode.
According to the anti-freeze control method of the air-conditioner of the embodiment of the present invention; obtain the suction temperature of compressor in the coil temperature of evaporimeter in indoor set and off-premises station; and the temperature gap calculated between coil temperature and suction temperature; and coil temperature and temperature gap are judged; if coil temperature is greater than the first temperature threshold and be less than or equal to the second temperature threshold; and temperature gap is more than or equal to the 3rd temperature threshold, then controls air-conditioner and enter anti-freeze protected mode.Therefore; the anti-freeze control method of the embodiment of the present invention can effectively control air-conditioner according to coil temperature and the temperature gap between coil temperature and suction temperature and enter anti-freeze protected mode; avoid the problem of the anti-freeze shielding failure caused because indoor heat exchanger in air-conditioner occurs bias current; thus effectively prevent air-conditioner from breaking down; improve service life and the Consumer's Experience of air-conditioner, and Reliability comparotive is high.
According to one embodiment of present invention; the anti-freeze control method of above-mentioned air-conditioner; also comprise: if judge that described coil temperature is less than or equal to described first temperature threshold and continues the first Preset Time, then control described air-conditioner and enter described anti-freeze protected mode.
According to one embodiment of present invention, when described air-conditioner enters described anti-freeze protected mode, control described compressor shutdown, and it is out of service to control outdoor fan in described off-premises station, and controls indoor fan in described indoor set and run with preset rotation speed.
According to one embodiment of present invention; after described air-conditioner enters described anti-freeze protected mode; if judge that described coil temperature is more than or equal to the 4th temperature threshold and continues the second Preset Time, then control described air-conditioner and exit described anti-freeze protected mode.
For achieving the above object, the present invention on the other hand embodiment proposes a kind of anti-freeze control device of air-conditioner, described air-conditioner comprises indoor set and off-premises station, described device comprises: temperature acquisition module, for obtaining the suction temperature of compressor in the coil temperature of evaporimeter in described indoor set and described off-premises station; Control module; for calculating the temperature gap between described coil temperature and described suction temperature; and described coil temperature and described temperature gap are judged; and judging that described coil temperature is greater than the first temperature threshold and is less than or equal to the second temperature threshold; and when described temperature gap is more than or equal to the 3rd temperature threshold, controls described air-conditioner and enter anti-freeze protected mode.
The anti-freeze control device of the air-conditioner of the embodiment of the present invention; the suction temperature of compressor in the coil temperature of evaporimeter in indoor set and off-premises station is obtained by temperature acquisition module; control module calculates the temperature gap between coil temperature and suction temperature; and coil temperature and temperature gap are judged; and judging that coil temperature is greater than the first temperature threshold and is less than or equal to the second temperature threshold; and when temperature gap is more than or equal to the 3rd temperature threshold, controls air-conditioner and enter anti-freeze protected mode.Therefore; the anti-freeze control device of the embodiment of the present invention can effectively control air-conditioner according to coil temperature and the temperature gap between coil temperature and suction temperature and enter anti-freeze protected mode; avoid the problem of the anti-freeze shielding failure caused because indoor heat exchanger in air-conditioner occurs bias current; thus effectively prevent air-conditioner from breaking down; improve service life and the Consumer's Experience of air-conditioner, and Reliability comparotive is high.
According to one embodiment of present invention, described control module, when judging that described coil temperature is less than or equal to described first temperature threshold and continues the first Preset Time, controls described air-conditioner and enters described anti-freeze protected mode.
According to one embodiment of present invention; described control module is when controlling described air-conditioner and entering described anti-freeze protected mode; described control module controls described compressor shutdown; and it is out of service to control outdoor fan in described off-premises station, and controls indoor fan in described indoor set and run with preset rotation speed.
According to one embodiment of present invention; described control module is after the described air-conditioner of control enters described anti-freeze protected mode; described control module, when judging that described coil temperature is more than or equal to the 4th temperature threshold and continues the second Preset Time, controls described air-conditioner and exits described anti-freeze protected mode.
In addition, embodiments of the invention also proposed a kind of air-conditioner, and it comprises the anti-freeze control device of above-mentioned air-conditioner.
The air-conditioner of the embodiment of the present invention; by the anti-freeze control device of above-mentioned air-conditioner; can effectively enter anti-freeze protected mode; avoid the problem of the anti-freeze shielding failure caused because indoor heat exchanger in air-conditioner occurs bias current; thus effectively prevent the generation of fault, improve service life and Consumer's Experience.
Accompanying drawing explanation
Fig. 1 is the flow chart of the anti-freeze control method of air-conditioner according to the embodiment of the present invention.
Fig. 2 is the block diagram of the anti-freeze control device of air-conditioner according to the embodiment of the present invention.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
The air-conditioner and anti-freeze control method thereof and device that propose according to the embodiment of the present invention are described with reference to the accompanying drawings.
Fig. 1 is the flow chart of the anti-freeze control method of air-conditioner according to the embodiment of the present invention, and wherein, air-conditioner comprises indoor set and off-premises station.As shown in Figure 1, the anti-freeze control method of this air-conditioner comprises the following steps:
S1, obtains the suction temperature of compressor in the coil temperature of evaporimeter in indoor set and off-premises station, and calculates the temperature gap between coil temperature and suction temperature.
S2, judges coil temperature and temperature gap.
S3, if judge that coil temperature is greater than the first temperature threshold and is less than or equal to the second temperature threshold, and temperature gap is more than or equal to the 3rd temperature threshold, then control air-conditioner and enter anti-freeze protected mode.Wherein, the first temperature threshold, the second temperature threshold and the 3rd temperature threshold can be demarcated according to actual conditions, and such as, the first temperature threshold can be 2 DEG C, and the second temperature threshold can be 7 DEG C, and the 3rd temperature threshold can be 10 DEG C.
According to one embodiment of present invention, if judge that coil temperature is less than or equal to the first temperature threshold and continues the first Preset Time, then control air-conditioner and enter anti-freeze protected mode.Wherein, the first Preset Time can be demarcated according to actual conditions, and such as, the first Preset Time can be 5min.
According to one embodiment of present invention, when air-conditioner enters anti-freeze protected mode, control compressor shutdown, and it is out of service to control outdoor fan in off-premises station, and in control indoor set, indoor fan runs with preset rotation speed.Wherein, preset rotation speed can be demarcated according to actual conditions.
Particularly, when air-conditioner in a chiller mode or dehumidifier mode operation time, the suction temperature Th of compressor in the coil temperature T2 of evaporimeter and off-premises station in Real-time Obtaining indoor set.If the first temperature threshold TE1 < T2≤the second temperature threshold TE2 and T2-Th >=the 3rd temperature threshold TE3; or T2≤TE1 and continue the first preset time t 1; then control air-conditioner and enter anti-freeze protected mode; now compressor shutdown; outdoor fan is out of service, and indoor fan runs according to preset rotation speed.
According to one embodiment of present invention, after air-conditioner enters anti-freeze protected mode, if judge that coil temperature is more than or equal to the 4th temperature threshold and continues the second Preset Time, then control air-conditioner and exit anti-freeze protected mode.Namely say, after air-conditioner enters anti-freeze protected mode, the coil temperature of Real-time Obtaining evaporimeter also judges it, when continuing the second preset time t 2 as coil temperature >=the 4th temperature threshold TE4, controls air-conditioner and exits anti-freeze protected mode.
According to the anti-freeze control method of the air-conditioner of the embodiment of the present invention; obtain the suction temperature of compressor in the coil temperature of evaporimeter in indoor set and off-premises station; and the temperature gap calculated between coil temperature and suction temperature; and coil temperature and temperature gap are judged; if coil temperature is greater than the first temperature threshold and be less than or equal to the second temperature threshold; and temperature gap is more than or equal to the 3rd temperature threshold, then controls air-conditioner and enter anti-freeze protected mode.Therefore; the anti-freeze control method of the embodiment of the present invention can effectively control air-conditioner according to coil temperature and the temperature gap between coil temperature and suction temperature and enter anti-freeze protected mode; avoid the problem of the anti-freeze shielding failure caused because indoor heat exchanger in air-conditioner occurs bias current; thus effectively prevent air-conditioner from breaking down; improve service life and the Consumer's Experience of air-conditioner, and Reliability comparotive is high.
Fig. 2 is the block diagram of the anti-freeze control device of air-conditioner according to the embodiment of the present invention, and wherein, air-conditioner comprises indoor set and off-premises station.As shown in Figure 2, the anti-freeze control device of this air-conditioner comprises: temperature acquisition module 10 and control module 20.
Wherein, temperature acquisition module 10 is for obtaining the suction temperature of compressor in the coil temperature of evaporimeter in indoor set and off-premises station.Control module 20 is for calculating the temperature gap between coil temperature and suction temperature; and coil temperature and temperature gap are judged; and judging that coil temperature is greater than the first temperature threshold and is less than or equal to the second temperature threshold; and when temperature gap is more than or equal to the 3rd temperature threshold, controls air-conditioner and enter anti-freeze protected mode.
According to one embodiment of present invention, control module 20, when judging that coil temperature is less than or equal to the first temperature threshold and continues the first Preset Time, controls air-conditioner and enters anti-freeze protected mode.
According to one embodiment of present invention; control module 20 is when controlling air-conditioner and entering anti-freeze protected mode; control module 20 controls compressor shutdown, and it is out of service to control outdoor fan in off-premises station, and in control indoor set, indoor fan runs with preset rotation speed.
Particularly, when air-conditioner in a chiller mode or dehumidifier mode operation time, can by the suction temperature Th of compressor in the coil temperature T2 of evaporimeter in temperature sensor respectively Real-time Obtaining indoor set and off-premises station.If the first temperature threshold TE1 < T2≤the second temperature threshold TE2 and T2-Th >=the 3rd temperature threshold TE3; or T2≤TE1 and continue the first preset time t 1; then control module 20 controls air-conditioner and enters anti-freeze protected mode; now compressor shutdown; outdoor fan is out of service, and indoor fan runs according to preset rotation speed.
According to one embodiment of present invention; control module 20 is after control air-conditioner enters anti-freeze protected mode; control module 20, when judging that coil temperature is more than or equal to the 4th temperature threshold and continues the second Preset Time, controls air-conditioner and exits anti-freeze protected mode.Namely say; after air-conditioner enters anti-freeze protected mode; the coil temperature of Real-time Obtaining evaporimeter also judges it, as coil temperature >=the 4th temperature threshold TE4 and when continuing the second preset time t 2, control module 20 controls air-conditioner and exits anti-freeze protected mode.
The anti-freeze control device of the air-conditioner of the embodiment of the present invention; the suction temperature of compressor in the coil temperature of evaporimeter in indoor set and off-premises station is obtained by temperature acquisition module; control module calculates the temperature gap between coil temperature and suction temperature; and coil temperature and temperature gap are judged; and judging that coil temperature is greater than the first temperature threshold and is less than or equal to the second temperature threshold; and when temperature gap is more than or equal to the 3rd temperature threshold, controls air-conditioner and enter anti-freeze protected mode.Therefore; the anti-freeze control device of the embodiment of the present invention can effectively control air-conditioner according to coil temperature and the temperature gap between coil temperature and suction temperature and enter anti-freeze protected mode; avoid the problem of the anti-freeze shielding failure caused because indoor heat exchanger in air-conditioner occurs bias current; thus effectively prevent air-conditioner from breaking down; improve service life and the Consumer's Experience of air-conditioner, and Reliability comparotive is high.
In addition, embodiments of the invention also proposed a kind of air-conditioner, and it comprises the anti-freeze control device of above-mentioned air-conditioner.
The air-conditioner of the embodiment of the present invention; by the anti-freeze control device of above-mentioned air-conditioner; can effectively enter anti-freeze protected mode; avoid the problem of the anti-freeze shielding failure caused because indoor heat exchanger in air-conditioner occurs bias current; thus effectively prevent the generation of fault, improve service life and Consumer's Experience.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (9)
1. an anti-freeze control method for air-conditioner, is characterized in that, described air-conditioner comprises indoor set and off-premises station, said method comprising the steps of:
Obtain the suction temperature of compressor in the coil temperature of evaporimeter in described indoor set and described off-premises station, and calculate the temperature gap between described coil temperature and described suction temperature;
Described coil temperature and described temperature gap are judged;
If judge that described coil temperature is greater than the first temperature threshold and is less than or equal to the second temperature threshold, and described temperature gap is more than or equal to the 3rd temperature threshold, then controls described air-conditioner and enter anti-freeze protected mode.
2. the anti-freeze control method of air-conditioner as claimed in claim 1, is characterized in that, also comprise:
If judge that described coil temperature is less than or equal to described first temperature threshold and continues the first Preset Time, then control described air-conditioner and enter described anti-freeze protected mode.
3. the anti-freeze control method of air-conditioner as claimed in claim 1 or 2; it is characterized in that; when described air-conditioner enters described anti-freeze protected mode; control described compressor shutdown; and it is out of service to control outdoor fan in described off-premises station, and controls indoor fan in described indoor set and run with preset rotation speed.
4. the anti-freeze control method of air-conditioner as claimed in claim 3; it is characterized in that; after described air-conditioner enters described anti-freeze protected mode; if judge that described coil temperature is more than or equal to the 4th temperature threshold and continues the second Preset Time, then control described air-conditioner and exit described anti-freeze protected mode.
5. an anti-freeze control device for air-conditioner, is characterized in that, described air-conditioner comprises indoor set and off-premises station, and described device comprises:
Temperature acquisition module, for obtaining the suction temperature of compressor in the coil temperature of evaporimeter in described indoor set and described off-premises station;
Control module; for calculating the temperature gap between described coil temperature and described suction temperature; and described coil temperature and described temperature gap are judged; and judging that described coil temperature is greater than the first temperature threshold and is less than or equal to the second temperature threshold; and when described temperature gap is more than or equal to the 3rd temperature threshold, controls described air-conditioner and enter anti-freeze protected mode.
6. the anti-freeze control device of air-conditioner as claimed in claim 5; it is characterized in that; described control module, when judging that described coil temperature is less than or equal to described first temperature threshold and continues the first Preset Time, controls described air-conditioner and enters described anti-freeze protected mode.
7. the anti-freeze control device of the air-conditioner as described in claim 5 or 6; it is characterized in that; described control module is when controlling described air-conditioner and entering described anti-freeze protected mode; described control module controls described compressor shutdown; and it is out of service to control outdoor fan in described off-premises station, and controls indoor fan in described indoor set and run with preset rotation speed.
8. the anti-freeze control device of air-conditioner as claimed in claim 7; it is characterized in that; described control module is after the described air-conditioner of control enters described anti-freeze protected mode; described control module, when judging that described coil temperature is more than or equal to the 4th temperature threshold and continues the second Preset Time, controls described air-conditioner and exits described anti-freeze protected mode.
9. an air-conditioner, is characterized in that, comprises the anti-freeze control device of the air-conditioner according to any one of claim 5-8.
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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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| CN201510943080.9A CN105423495B (en) | 2015-12-16 | 2015-12-16 | Air conditioner and its anti-freeze control method and device |
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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 |
| CN106196428A (en) * | 2016-07-01 | 2016-12-07 | 美的集团武汉制冷设备有限公司 | Air-conditioner and anti-freeze control method thereof |
| CN106196455A (en) * | 2016-07-15 | 2016-12-07 | 珠海格力电器股份有限公司 | Motor control method and system and air-conditioner |
| CN106288160A (en) * | 2016-08-08 | 2017-01-04 | 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 |
| CN108317669A (en) * | 2018-02-14 | 2018-07-24 | 青岛海尔空调器有限总公司 | Indoor unit anti-freeze control method for air conditioner |
| CN108413564A (en) * | 2018-02-14 | 2018-08-17 | 青岛海尔空调器有限总公司 | Indoor unit anti-freeze control method and air conditioner for air conditioner |
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| CN108518805A (en) * | 2018-05-10 | 2018-09-11 | 广东美的制冷设备有限公司 | Progress control method, device, air conditioner and computer readable storage medium |
| CN110953689A (en) * | 2019-11-14 | 2020-04-03 | 合肥海尔空调器有限公司 | Air conditioner anti-freezing protection method and device and air conditioner |
| CN111189177A (en) * | 2018-11-14 | 2020-05-22 | 青岛海尔空调器有限总公司 | Air conditioner and anti-freezing control method thereof |
| CN111397103A (en) * | 2020-04-16 | 2020-07-10 | 宁波奥克斯电气股份有限公司 | Air conditioner anti-freezing control method and device and air conditioner |
| CN112178888A (en) * | 2020-09-28 | 2021-01-05 | 青岛海尔空调器有限总公司 | Method and device for controlling air conditioner and air conditioner |
| CN113310172A (en) * | 2020-02-27 | 2021-08-27 | 青岛海尔空调器有限总公司 | Method and device for controlling freezing prevention of air conditioner and air conditioner |
| CN113915734A (en) * | 2021-09-27 | 2022-01-11 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device and air conditioner |
| CN115823786A (en) * | 2022-12-08 | 2023-03-21 | 珠海格力电器股份有限公司 | Unit anti-freezing control method and device and water chilling unit |
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