CN114234366A - Anti-freezing method, control device, air conditioner unit and storage medium - Google Patents
Anti-freezing method, control device, air conditioner unit and storage medium Download PDFInfo
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- CN114234366A CN114234366A CN202111557017.3A CN202111557017A CN114234366A CN 114234366 A CN114234366 A CN 114234366A CN 202111557017 A CN202111557017 A CN 202111557017A CN 114234366 A CN114234366 A CN 114234366A
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- 238000007710 freezing Methods 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 179
- 238000004378 air conditioning Methods 0.000 claims abstract description 4
- 230000002528 anti-freeze Effects 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 16
- 108010053481 Antifreeze Proteins Proteins 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000005868 electrolysis reaction Methods 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 238000009837 dry grinding Methods 0.000 abstract description 2
- 230000008014 freezing Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
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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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- 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
Abstract
The invention discloses an anti-freezing method, a control device, an air conditioner unit and a storage medium, wherein the anti-freezing method comprises the following steps: is applied to an air conditioning unit and comprises the following steps: detecting a temperature parameter, and judging the water quantity state of the unit according to the temperature parameter; wherein: the temperature parameters comprise high pressure temperature, water inlet temperature, water outlet temperature and anti-freezing temperature; and selecting an anti-freezing working mode of the unit according to the water quantity state. The invention heats the water in the heat exchanger by starting the compressor, which is more effective; and judging whether the unit is in a water state or a non-water state according to the temperature conditions of water inlet and outlet under high pressure, and if the unit is in the water state, normally preventing freezing under an automatic anti-freezing condition. If the water pump is in a water-free state, the unit is directly locked, and can be removed only after power is cut off and power is on, so that the water pump is prevented from idling and dry grinding, and the water pump is protected. By controlling the frequency of the compressor, the unit can heat a water system under the working condition of low ring temperature, and the anti-freezing purpose is achieved.
Description
Technical Field
The invention relates to the technical field of anti-freezing control, in particular to an anti-freezing method, a control device, an air conditioner unit and a storage medium.
Background
The prior art discloses an anti-freezing control method, which determines an anti-freezing operation mode by detecting a water flow rate value, and performs corresponding anti-freezing operation control according to the anti-freezing operation mode. The operation modes include a no-water operation mode, a water-shortage operation mode and a water operation mode. However, the detection is to judge whether water exists or not based on the detected flow value, and when the water flow is detected incorrectly, the unit is directly frozen due to false alarm
For a heat pump unit of a water system, the water flow value of the unit is detected for antifreezing, when the antifreezing operation is larger than the protection value of a water flow switch, the unit is subjected to antifreezing control, the water flow switch is disconnected due to the over-small flow value, and the requirement of the minimum water flow value of the unit is met, so that the antifreezing abnormality can be caused. The water flow value of the unit can only be detected through the water flow switch, and the water capacity of the unit cannot be accurately judged. And if the water flow switch fails, the water system can be directly frozen to cause frost damage to pipelines or components, or the water pump bearing is dry-ground due to the fact that no water exists in the system. The existing anti-freezing control of a heat pump water system mainly judges whether a unit has water or not through a water flow switch, but the water flow switch is used as a vulnerable component, and when the water flow switch fails, false alarm or failure is easy to occur, so that the conditions of frost crack of an evaporator of the unit, damage of a compressor and the like are caused.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a method for judging whether a unit is in a water state or a non-water state according to the conditions of high pressure temperature and water inlet and outlet temperature, and selecting an anti-freezing mode; the frequency of the compressor is controlled, so that the unit can heat a water system under the working condition of low ring temperature, and the anti-freezing method achieves the anti-freezing purpose.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method of freeze protection, wherein: is applied to an air conditioning unit and comprises the following steps:
detecting a temperature parameter, and judging the water quantity state of the unit according to the temperature parameter; wherein: the temperature parameters comprise high pressure temperature, water inlet temperature, water outlet temperature and anti-freezing temperature;
and selecting an anti-freezing working mode of the unit according to the water quantity state.
As a further improvement of the invention: the water quantity state of the unit is a water state and a water-free state;
if the judgment result is that the water exists, the anti-freezing working mode enters an automatic anti-freezing mode;
if the judgment result is the anhydrous state, the anti-freezing working mode is exited, the unit is directly locked, and the standby unit is powered off and then is subjected to electrolysis to remove the locked state.
As a further improvement of the invention: the high pressure temperature is a saturation temperature value of the exhaust pressure of the compressor;
the anti-freezing temperature is a temperature value detected at any point except the water inlet and the water outlet in the water pipeline of the unit.
As a further improvement of the invention: setting the highest pressure protection time value of the compressor as a first preset time value a;
the water pump is turned off, and the heating mode is operated;
detecting the high-pressure protection time t and the first compressor frequency f of the compressor at the low-temperature environment temperature1；
According to the comparison result of the high-voltage protection time t and the first preset time value a;
adjusting the first compressor frequency f1Making the high-voltage protection time t be a first preset time value a;
recording the adjusted second compressor frequency f at the corresponding ambient temperature2And storing the valve step values of the electronic expansion valve into a database.
As a further improvement of the invention: the step of comparing the high-voltage protection time t with the first preset time value a is as follows:
when the high-voltage protection time t is less than a first preset time value a, increasing the first compressor frequency f1To a second compressor frequency f2So as to make high pressureProtection time t ═ a;
when the high-voltage protection time t is greater than a first preset time value a, the frequency f of the first compressor is reduced1To a second compressor frequency f2So that the high voltage protection time t is a.
As a further improvement of the invention: detecting a current environment temperature value;
obtaining a second compressor frequency of the compressor and a valve step value of the electronic expansion valve according to the current environment temperature value and the corresponding low-temperature environment temperature value matched with the database;
the compressor operates according to a second compressor frequency;
the electronic expansion valve opening is operated according to the current valve step value.
As a further improvement of the invention: operating the compressor according to the frequency of the second compressor corresponding to the current ambient temperature and the valve step value of the electronic expansion valve;
s1: and (3) carrying out first detection judgment:
when the detected water inlet temperature, the detected water outlet temperature and the detected anti-freezing temperature are greater than the water temperature threshold value, the high-pressure protection time value is smaller than the first preset time value;
judging that the water exists, controlling the water existence anti-freezing condition, and entering an automatic anti-freezing mode;
otherwise, go to step S2;
s2: starting up the computer after shutdown;
and (5) carrying out second detection judgment:
if the detected water inlet temperature, the detected water outlet temperature and the detected anti-freezing temperature are smaller than the water temperature threshold value, the high-pressure protection time value reaches the first preset time value;
judging that the water-free state exists, exiting the anti-freezing working mode, directly locking the unit, and removing the locking state by electrolysis after the standby unit is powered off;
otherwise, the process proceeds to step S3,
s3: and after the compressor operates for a second preset time value, carrying out third detection and judgment:
when the detected water inlet temperature, the detected water outlet temperature and the detected anti-freezing temperature are greater than the water temperature threshold value, the high-pressure protection time value is smaller than the first preset time value;
judging that the water exists, controlling the water existence anti-freezing condition, and entering an automatic anti-freezing mode;
otherwise, the process returns to step S2.
As another technical scheme of the invention: an antifreeze control apparatus, wherein: the device comprises a detection module, a judgment module and a control module;
the detection module is used for acquiring water inlet temperature, water outlet temperature, anti-freezing temperature and high-pressure temperature;
the judging module is used for comparing the water inlet temperature, the water outlet temperature, the anti-freezing temperature and the water temperature threshold value, and the high-pressure protection time value with the first preset time value so as to judge the water volume state;
and the control module is used for controlling the air conditioner to operate according to the corresponding target operation parameters when the air conditioner meets the corresponding judgment conditions.
As another technical scheme of the invention: an antifreeze control apparatus, comprising: a memory; and a processor coupled to the memory, the processor configured to perform operations implementing the anti-freeze control method of any of the above, based on instructions stored in the memory.
As another technical scheme of the invention: an anti-freeze air conditioner unit, wherein: the anti-freeze method as described above is used.
As another technical scheme of the invention: a computer readable storage medium, wherein the computer readable storage medium stores computer instructions for causing a computer to perform the anti-freeze method as described above.
Compared with the prior art, the invention has the beneficial effects that:
by adjusting the frequency of the compressor, the high-temperature and high-pressure refrigerant directly heats the water channel, so that a good heating effect can be achieved, and the water channel is more effective, more direct and faster than the traditional electric heating;
the water-cooled water pump is characterized in that whether the unit is in a water state or a water-free state is judged by detecting the conditions of the high-pressure temperature and the water inlet and outlet temperature of the unit, the unit normally enters automatic anti-freezing state if the water state is judged, and the unit is locked and not started if the water state is detected, so that the water pump is prevented from idling and dry grinding, and the water pump is protected.
Drawings
FIG. 1 is a flow chart of an embodiment of the present invention;
FIG. 2 is a flowchart of an embodiment of the present invention.
Detailed Description
The invention will now be further described with reference to the accompanying description and examples:
a method of freeze protection, wherein: is applied to an air conditioning unit and comprises the following steps:
detecting a temperature parameter, and judging the water quantity state of the unit according to the temperature parameter; wherein: the temperature parameters comprise high pressure temperature, water inlet temperature, water outlet temperature and anti-freezing temperature;
and selecting an anti-freezing working mode of the unit according to the water quantity state.
The water quantity state of the unit is a water state and a water-free state;
if the judgment result is that the water exists, the anti-freezing working mode enters an automatic anti-freezing mode;
if the judgment result is the anhydrous state, the anti-freezing working mode is exited, the unit is directly locked, and the standby unit is powered off and then is subjected to electrolysis to remove the locked state.
The high pressure temperature is a saturation temperature value of the exhaust pressure of the compressor;
the anti-freezing temperature is a temperature value detected at any point except the water inlet and the water outlet in the water pipeline of the unit.
The first embodiment is as follows: anti-freezing method for air conditioner unit
Referring to fig. 1:
step 101: detecting a temperature parameter, and judging whether to enter an anti-freezing working mode according to the temperature parameter;
the temperature parameters comprise environment temperature, water inlet temperature, water outlet temperature, anti-freezing temperature, high pressure temperature and the like, wherein the water inlet temperature, the water outlet temperature and the anti-freezing temperature of the waterway pipeline of the unit are detected in real time through a temperature sensing bulb; wherein:
the water inlet temperature and the water outlet temperature are the water temperatures of a water inlet and a water outlet of a waterway pipeline of the water pump system;
the anti-freezing temperature is a temperature value detected by removing any point of a water inlet and a water outlet from a water channel pipeline of the unit, and a detection point can be arranged at any point of the pipeline, so that the purpose of preventing a temperature sensing bulb of the water inlet or the water outlet from being damaged or inaccurate in detection is realized, and the judgment is wrong.
The high-pressure temperature is the saturation temperature of the exhaust gas of the compressor, namely the saturation temperature corresponding to the high-pressure, and a high-pressure sensor can be arranged to detect and calculate the value.
Step 102: adjusting compressor frequency, building database
Under the working condition of low ambient temperature, the water pump is turned off, and the unit operates in a heating mode;
setting the highest pressure protection time value of the compressor as a first preset time value a;
the first preset time value a is the time for the compressor to start at a certain fixed frequency and operate to the highest pressure protection value, and the highest pressure protection value is set to be smaller than the actual highest pressure protection value of the compressor, so that the compressor is prevented from being damaged due to too high pressure. The fixed frequency can be optimized according to specific conditions, and the specific solid frequency value in the scheme is not limited.
Detecting the high-pressure protection time t and the first compressor frequency f correspondingly obtained by the compressor under different low-temperature environment temperatures1Collecting enough data under low-temperature environmental temperature values to obtain a mapping number set TAmbient temperature→【t，f1H ]; wherein T isAmbient temperatureLess than or equal to 0 ℃; the high-voltage protection time t is the time taken for the compressor to run to enter the high-voltage protection from the current frequency starting.
The high voltage protection time t is compared with a,
when the high-pressure protection time t is less than a first preset time value a, increasing the first compressor frequency f1 to a second compressor frequency f2 until the high-pressure protection time t is equal to a;
when the high-voltage protection time t is greater than the first preset time value a, the first compressor frequency f1 is decreased to the second compressor frequency f2, so that the high-voltage protection time t is a.
Recording the adjusted second compressor frequency f at the corresponding ambient temperature2And when the unit operates at the frequency, the valve step number n of the opening corresponding to the electronic expansion valve is obtained; the valve step numerical value is the step number of the opening degree of the electronic expansion valve, the valve steps are used for adjusting the flow of the refrigerant, the flow is different under different working conditions, and the corresponding protection time is different.
Updating the mapping value TAmbient temperature→【a，f2N is; forming a database;
step S103, acquiring the frequency of the compressor and the valve step value of the electronic expansion valve to start the compressor under the condition of reaching the anti-freezing condition; when the water way temperature control device is used, the high-pressure temperature of the compressor is used for heating the water way, the temperature change of the water way in a water-existing or water-free state is obtained, the condition of the water system is judged according to the temperature difference between the high-pressure temperature and the water inlet, outlet and anti-freezing temperatures after a period of time, and a water temperature threshold value T is set and is a temperature value at which the unit exits the anti-freezing working mode. The frequency of the compressor is adjusted by setting the high-pressure protection time, the frequency of the compressor at the current ring temperature and the valve step fixed numerical value of the electronic expansion valve corresponding to the frequency are obtained, and the electronic expansion valve operates according to the fixed numerical value after the electronic expansion valve is prevented from freezing.
Step S104, comparing the data to obtain an anti-freezing working mode;
setting a water temperature threshold T of a unit which exits an anti-freezing working mode;
comparing and judging the detected water inlet temperature, the detected water outlet temperature and the detected anti-freezing temperature with a water temperature threshold T;
comparing and judging the detected high-voltage protection time value with a first preset time value a;
in actual operation, detecting the current ambient temperature, and reading the numerical value of the corresponding condition in the database;
when the detected inlet water temperature, outlet water temperature and anti-freezing temperature are higher than the water temperature threshold value T, the high-pressure protection value is smaller than a first preset time value a;
judging that the water exists, controlling the water existence anti-freezing condition, and entering an automatic anti-freezing mode;
if the detected inlet water temperature, outlet water temperature and anti-freezing temperature are less than the water temperature threshold value T, the high-pressure protection value reaches a first preset time value a;
judging that the water-free state exists, exiting the anti-freezing working mode, directly locking the unit, and removing the locking state by electrolysis after the standby unit is powered off.
The working principle is as follows: the unit is under the anhydrous state of having water, and the temperature variation in water route after the start compressor is very different, and the heat transfer effect of water is better very much than the air, and the water route intensifies fast under the condition of having water, and is the air in the anhydrous state, and the air intensifies slowly, just can judge the unit according to the temperature difference after the heating under the fixed time for water or anhydrous. As shown in figure 1, under the working condition of low ring temperature (below 0 ℃), the water pump is firstly closed, the unit is started in a heating mode, and the high-pressure protection time and the compressor frequency of the compressor under different ring temperatures are recorded. The high-pressure protection time of the unit at different ring temperatures is all a by adjusting the frequency of the compressor, and the frequency of the compressor at the current ring temperature and the valve step of the electronic expansion valve are recorded; in actual anti-freezing operation, the current ambient temperature is detected, the same or similar ambient temperature working conditions in the database are read, and the compressor frequency and the electronic expansion valve operate in a valve step mode under the anti-freezing condition.
Referring to fig. 2, when the unit reaches the anti-freezing condition and the water flow switch is not in failure, water is in the water channel, and anti-freezing is performed according to the normal anti-freezing working mode;
when the water flow switch is in failure, such as the water pump is broken, water is leaked, the water flow switch is broken, and the like. And starting the compressor at a fixed compressor frequency and the valve of the electronic expansion valve under the current environment temperature, if the water inlet temperature, the water outlet temperature and the anti-freezing temperature are all greater than T, and the high-pressure protection time value does not reach the high-pressure protection time of the first preset time value, judging that the unit is in a water state at the moment, and normally controlling the anti-freezing condition. If the water inlet temperature, the water outlet temperature and the anti-freezing temperature do not reach T, the high-pressure protection time value of the unit reaches the high-pressure protection time of the first preset time value first, the unit is stopped and then started up for a certain time, the compressor is operated for a period of time and then detected, and the result is that the high-pressure protection time value reaches the high-pressure protection time of the first preset time value first, the water-free state is judged at the moment, the anti-freezing working mode is exited, the unit is locked and is not started up, the water pump is protected, and the memory can be cleared only when the power is off and on. And if the inlet water temperature, the outlet water temperature and the anti-freezing temperature are all larger than T and the high-pressure protection time is not up to the high-pressure protection time of the first preset time value during the operation after the startup, judging that a water state exists, and working under a normal anti-freezing condition.
Example two:
an antifreeze control apparatus, wherein: the device comprises a detection module, a judgment module and a control module;
the detection module is used for acquiring water inlet temperature, water outlet temperature, anti-freezing temperature and high-pressure temperature; the detection module can detect the water inlet temperature, the water outlet temperature and the anti-freezing temperature by adopting a temperature sensing bulb; the high-pressure sensor detects a high-pressure temperature value;
the judging module is used for comparing the water inlet temperature, the water outlet temperature, the anti-freezing temperature and the water temperature threshold T, and the high-pressure protection time value at the high-pressure temperature with the high-pressure protection time of a first preset time value so as to judge the water quantity state;
and the control module is used for controlling the air conditioner to operate according to the corresponding target operation parameters when the air conditioner meets the corresponding judgment conditions.
Example three:
an antifreeze control apparatus, comprising: a memory; and a processor coupled to the memory, the processor configured to perform operations implementing the anti-freeze control method of any of the above embodiments based on instructions stored in the memory.
Example four:
an anti-freeze air conditioner unit, wherein: the antifreeze method as described in one of the above embodiments is used.
Example five:
a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions,
the computer instructions are for causing a computer to perform the freeze protection method as described in the above embodiments.
In summary, after reading the present disclosure, those skilled in the art can make various other corresponding changes without creative mental labor according to the technical solutions and concepts of the present disclosure, and all of them are within the protection scope of the present disclosure.
Claims (11)
1. An anti-freezing method is characterized in that: is applied to an air conditioning unit and comprises the following steps:
detecting a temperature parameter, and judging the water quantity state of the unit according to the temperature parameter; wherein: the temperature parameters comprise high pressure temperature, water inlet temperature, water outlet temperature and anti-freezing temperature;
and selecting an anti-freezing working mode of the unit according to the water quantity state.
2. The antifreeze method according to claim 1, wherein:
the water quantity state of the unit is a water state or a water-free state;
if the judgment result is that the water exists, the anti-freezing working mode enters an automatic anti-freezing mode;
if the judgment result is the anhydrous state, the anti-freezing working mode is exited, the unit is directly locked, and the standby unit is powered off and then is subjected to electrolysis to remove the locked state.
3. The antifreeze method according to claim 1, wherein:
the high pressure temperature is a saturation temperature value of the exhaust pressure of the compressor;
the anti-freezing temperature is a temperature value detected at any point except the water inlet and the water outlet in the water pipeline of the unit.
4. The antifreeze method according to claim 2, wherein:
setting the highest pressure protection time value of the compressor as a first preset time value a;
the water pump is turned off, and the heating mode is operated;
detecting the high-pressure protection time t and the first compressor frequency f of the compressor at the low-temperature environment temperature1；
According to the comparison result of the high-voltage protection time t and the first preset time value a;
adjusting the first compressor frequency f1Making the high-voltage protection time t be a first preset time value a;
recording the adjusted second compressor frequency f at the corresponding ambient temperature2And storing the valve step values of the electronic expansion valve into a database.
5. The antifreeze method according to claim 4, wherein: the step of comparing the high-voltage protection time t with the first preset time value a is as follows:
when the high-pressure protection time t is less than a first preset time value a, increasing the first compressor frequency f1 to a second compressor frequency f2Making the high-voltage protection time t equal to a;
when the high-pressure protection time t is greater than the first preset time value a, the first compressor frequency f1 is decreased to the second compressor frequency f2So that the high voltage protection time t is a.
6. The antifreeze method according to claim 4 or 5, wherein:
detecting a current environment temperature value;
obtaining a second compressor frequency of the compressor and a valve step value of the electronic expansion valve according to the current environment temperature value and the corresponding low-temperature environment temperature value matched with the database;
the compressor operates according to a second compressor frequency;
the electronic expansion valve opening is operated according to the current valve step value.
7. An antifreeze method according to claim 6, wherein:
operating the compressor according to the frequency of the second compressor corresponding to the current ambient temperature and the valve step value of the electronic expansion valve;
s1: and (3) carrying out first detection judgment:
when the detected water inlet temperature, the detected water outlet temperature and the detected anti-freezing temperature are greater than the water temperature threshold value, the high-pressure protection time value is smaller than the first preset time value;
judging that the water exists, controlling the water existence anti-freezing condition, and entering an automatic anti-freezing mode;
otherwise, go to step S2;
s2: starting up the computer after shutdown;
and (5) carrying out second detection judgment:
if the detected water inlet temperature, the detected water outlet temperature and the detected anti-freezing temperature are smaller than the water temperature threshold value, the high-pressure protection time value reaches the first preset time value;
judging that the water-free state exists, exiting the anti-freezing working mode, directly locking the unit, and removing the locking state by electrolysis after the standby unit is powered off;
otherwise, the process proceeds to step S3,
s3: and after the compressor operates for a second preset time value, carrying out third detection and judgment:
when the detected water inlet temperature, the detected water outlet temperature and the detected anti-freezing temperature are greater than the water temperature threshold value, the high-pressure protection time value is smaller than the first preset time value;
judging that the water exists, controlling the water existence anti-freezing condition, and entering an automatic anti-freezing mode;
otherwise, the process returns to step S2.
8. An anti-freezing control device is characterized in that: the device comprises a detection module, a judgment module and a control module;
the detection module is used for acquiring water inlet temperature, water outlet temperature, anti-freezing temperature and high-pressure temperature;
the judging module is used for comparing the water inlet temperature, the water outlet temperature, the anti-freezing temperature and the water temperature threshold value, and the high-pressure protection time value with the first preset time value so as to judge the water volume state;
and the control module is used for controlling the air conditioner to operate according to the corresponding target operation parameters when the air conditioner meets the corresponding judgment conditions.
9. An antifreeze control apparatus, comprising: a memory; and a processor coupled to the memory, the processor configured to perform operations to implement the anti-freeze control method of any of claims 1-7 based on instructions stored in the memory.
10. An air conditioner unit, characterized in that: comprising an antifreeze control apparatus as claimed in claim 7 or 8.
11. A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer instructions for causing a computer to execute the antifreeze method according to any one of claims 1 to 7.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115096015A (en) * | 2022-06-30 | 2022-09-23 | 广东纽恩泰新能源科技发展有限公司 | Heat pump refrigeration anti-freezing method, device and control system |
| CN115247891A (en) * | 2022-06-28 | 2022-10-28 | 浙江中广电器集团股份有限公司 | Anti-freezing control method for heat pump water heater |
| CN117490280A (en) * | 2023-12-28 | 2024-02-02 | 珠海格力电器股份有限公司 | Anti-freezing control method and device for heat pump unit and heat pump unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115247891A (en) * | 2022-06-28 | 2022-10-28 | 浙江中广电器集团股份有限公司 | Anti-freezing control method for heat pump water heater |
| CN115096015A (en) * | 2022-06-30 | 2022-09-23 | 广东纽恩泰新能源科技发展有限公司 | Heat pump refrigeration anti-freezing method, device and control system |
| CN115096015B (en) * | 2022-06-30 | 2023-10-20 | 广东纽恩泰新能源科技发展有限公司 | Heat pump refrigeration anti-freezing method, device and control system |
| CN117490280A (en) * | 2023-12-28 | 2024-02-02 | 珠海格力电器股份有限公司 | Anti-freezing control method and device for heat pump unit and heat pump unit |
| CN117490280B (en) * | 2023-12-28 | 2024-03-22 | 珠海格力电器股份有限公司 | Anti-freezing control method and device for heat pump unit and heat pump unit |
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