CN106440583A - Hot water heater of air conditioning heat pump and antifreezing control method therefor - Google Patents

Hot water heater of air conditioning heat pump and antifreezing control method therefor Download PDF

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Publication number
CN106440583A
CN106440583A CN201611005369.7A CN201611005369A CN106440583A CN 106440583 A CN106440583 A CN 106440583A CN 201611005369 A CN201611005369 A CN 201611005369A CN 106440583 A CN106440583 A CN 106440583A
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CN
China
Prior art keywords
water
air conditioner
heat pump
pump hot
hot water
Prior art date
Application number
CN201611005369.7A
Other languages
Chinese (zh)
Inventor
王立友
刘树清
Original Assignee
广东美的暖通设备有限公司
美的集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 广东美的暖通设备有限公司, 美的集团股份有限公司 filed Critical 广东美的暖通设备有限公司
Priority to CN201611005369.7A priority Critical patent/CN106440583A/en
Publication of CN106440583A publication Critical patent/CN106440583A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B30/00Heat pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/005Arrangement or mounting of control or safety devices of safety devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2500/00Problems to be solved
    • F25B2500/06Damage

Abstract

The invention discloses an antifreezing control method for a hot water heater of an air conditioning heat pump. The method comprises the following steps of: collecting water temperature values of a water system of a unit of the hot water heater of the air conditioning heat pump at to-be-detected parts in a water circulating pipeline; and when the water temperature value at any one of the to-be-detected parts is smaller than a corresponding set temperature value, starting an auxiliary heating device at a corresponding part so as to raise the temperature of the part and the water temperature of the water system. The method disclosed by the invention can solve the problem that the hot water heater of the air conditioning heat pump is frozen as parts of the water system are frozen due to over-low water temperature in the water system.

Description

Air conditioner heat pump hot water and its antifreeze control method

Technical field

The present invention relates to air-conditioning technical field, more particularly, to a kind of air conditioner heat pump hot water and its antifreeze control method.

Background technology

In Central China, North China and Northeast Regional, because winter makes outdoor ambient temperature is relatively low, sometimes even up to water freezing point with Under.Under such low temperature environment, the unit of air conditioner heat pump hot water did not used or due to a variety of causes for a long time in winter And under short time powering-off state, if discharging water in unit water system in time and unit is standby and water of in water system does not flow Dynamic, then each part that can lead to unit water system is (as water-side heat, water circulating pump water flow switch, water charging system, differential water pressures are held Close etc.) inner icing and freezing.

When being in summer, when the unit of air conditioner heat pump hot water is in refrigeration mode, lead if water system design is lack of standardization Cause discharge less than normal, or unit is led to due to abnormal phenomena leaving water temperature too low in use and induces each portion of water system When part freezes, then occur that water system and coolant media system mutually immerse and the phenomenon of disorderly closedown, thus reducing user's body Test.

Content of the invention

Present invention is primarily targeted at providing a kind of air conditioner heat pump hot water and its antifreeze control method it is intended to solve empty Adjust heat pump water-heating machine too low because of the water temperature in water system, and the problem that freezing and freezing occur in each part of water system leading to.

For achieving the above object, the present invention provides a kind of antifreeze control method of air conditioner heat pump hot water, walks including following Suddenly:

Water temperature value at S1, unit water system part to be detected in water circulation pipe of collection air conditioner heat pump hot water;

S2, it is less than corresponding set temperature value when the water temperature value at any one part to be detected is detected, then start corresponding Assisted heating device at part, to improve the temperature of this part and the water temperature of water system.

Preferably, the described water temperature value detecting at any part of working as is less than corresponding set temperature value, then start phase Answer the assisted heating device at part, with improve the temperature of this part and the water temperature of water system step after also include:

Obtain the heat time heating time of described assisted heating device;

When being more than the predetermined heat time described heat time heating time, if detect water temperature value at any part still less than Corresponding set temperature value, then control described air conditioner heat pump hot water to open water pump, so that static water in described water system follows Circulation moves.

Preferably, described when described heat time heating time be more than the scheduled time when, if the water temperature value at any part is detected Still less than corresponding set temperature value, then described air conditioner heat pump hot water is controlled to open water pump, so that quiet in described water system Also include after the step of water circulation flowing only:

Obtain the run time of described water pump;

When described run time is more than the predetermined running time, if detect water temperature value at any part still less than Corresponding set temperature value, then control described air conditioner heat pump hot water to start shooting and run heating mode.

Preferably, described step S1 includes:

When described air conditioner heat pump hot water runs refrigeration mode, the unit water system of collection air conditioner heat pump hot water is followed in water Water temperature value at water-side heat in endless tube road.

Preferably, the antifreeze control method of described air conditioner heat pump hot water also includes:

When described air conditioner heat pump hot water is in standby mode, obtain current outdoor ambient temperature;

When described current outdoor ambient temperature is less than predetermined outdoor environment temperature, execution step S1.

For achieving the above object, the present invention also provides a kind of air conditioner heat pump hot water, and described air conditioner heat pump hot water includes Outdoor unit and water circulation system, described water circulation system assists at least provided with one at each part in water circulation pipe Heater.

Preferably, the water-side heat that described water circulation system includes being connected with described outdoor unit is changed with described water side Hot device successively and forms the terminal unit of loop, water flow switch, back water pump, and described terminal unit is connected to described water-side heat Influent side, and described back water pump is connected to the water outlet side of described water-side heat.

Preferably, described water circulation system is also included positioned between described water-side heat influent side and described terminal unit Water compensating valve, and one end connect described water-side heat influent side, the other end connect described water outlet side pressure difference switch.

Preferably, described water-side heat influent side and water outlet side, pressure difference switch, back water pump, water flow switch and moisturizing It is correspondingly provided with temperature sensor at valve.

Preferably, described assisted heating device is electrical heating wire or electrically heated rod.

Air conditioner heat pump hot water and its antifreeze control method that the present invention provides, by gathering the machine of air conditioner heat pump hot water Water temperature value at group water system part to be detected in water circulation pipe, when detecting the water temperature value at any one part to be detected Less than corresponding set temperature value, then start the assisted heating device at corresponding component, to improve temperature and the water of this part The water temperature of system.So, the present invention can solve air conditioner heat pump hot water because the water temperature in water system too low, and the water system leading to The problem freezing and freezing in each part of uniting, such that it is able to improve the stability of air conditioner heat pump hot water.

Brief description

Fig. 1 is the attachment structure schematic diagram of air conditioner heat pump hot water of the present invention;

Fig. 2 is the schematic flow sheet of the antifreeze control method first embodiment of air conditioner heat pump hot water of the present invention;

Fig. 3 is the schematic flow sheet of the antifreeze control method second embodiment of air conditioner heat pump hot water of the present invention;

Fig. 4 is the schematic flow sheet of the antifreeze control method 3rd embodiment of air conditioner heat pump hot water of the present invention;

Fig. 5 is the schematic flow sheet of the antifreeze control method fourth embodiment of air conditioner heat pump hot water of the present invention.

The realization of the object of the invention, functional characteristics and advantage will be described further in conjunction with the embodiments referring to the drawings.

Specific embodiment

It should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.

The present invention provides a kind of air conditioner heat pump hot water and its antifreeze control method, when air conditioner heat pump hot water is detected Unit water system in water circulation pipe, when water temperature value at any part to be detected is less than corresponding set temperature value, then Start the assisted heating device at corresponding component, to improve the temperature of this part and the water temperature of water system.Therefore, the present invention can With solution air conditioner heat pump hot water because the water temperature in water system is too low, and each part of water system leading to occurs freezing and freezes Problem.

The present invention provides a kind of air conditioner heat pump hot water 100, and with reference to Fig. 1, described air conditioner heat pump hot water 100 includes outdoor Unit 1 and water circulation system 2, described water circulation system 2 assists at least provided with one at each part in water circulation pipe Heater, when the water temperature value that described assisted heating device is used at any part is less than corresponding set temperature value, opens Dynamic heating, to improve the temperature of this part and the water temperature of water system.Preferably, described assisted heating device can be electrical heating Silk or the structure such as electrically heated rod, and described assisted heating device can coated each part in described water circulation pipe table Face, or stretch into each components interior setting.The present invention does not make specifically to the concrete structure of assisted heating device and installation site Limit, can rationally arrange according to actual needs.So, by each part at least provided with an assisted heating device, can In case part occurs freezing and freezes in water-stopping system.

Further, described water circulation system 2 includes the water-side heat 3 being connected with described outdoor unit 1 and described water Side heat exchanger 3 successively and forms the terminal unit 4 of loop, water flow switch 5, back water pump 6, and described terminal unit 4 is connected to described The influent side Tin of water-side heat 3, and described back water pump 6 is connected to the water outlet side Tout of described water-side heat 3.

Further, described water circulation system 2 is also included positioned at described water-side heat 3 influent side and described terminal unit Water compensating valve 7 between 4, and the influent side of the described water-side heat 3 of one end connection, the other end connects the pressure reduction of described water outlet side Switch 8.

Further, described water-side heat 3 influent side and water outlet side, pressure difference switch 8, back water pump 6, water flow switch 5 with And it is correspondingly provided with temperature sensor T1~T6 at water compensating valve 7, with the corresponding water temperature value detecting at each part.

Above-mentioned temperature sensor is due in for detecting the water temperature value at all parts, therefore, it can be defined as Temperature sensor, and the temperature sensor of described outdoor unit 1 surface setting is used for detecting outdoor environment temperature, therefore, it can Orientate outer temperature sensor as.

Wherein, the interior temperature sensor at described back water pump 6 and described water flow switch 5, separated by described back water pump 6 and Every setting.

Further, described temperature sensor is welded on the tube wall of described water circulation pipe, or stretches into described water circulation Setting in the body of pipeline.Specifically can rationally arrange according to actual needs, the present invention to this and is not especially limited.

Further, described water circulation system 2 is also included positioned at the water between described pressure difference switch 8 and described water compensating valve 7 Pressure table 9, the heater 11 between relief valve 10, and described pressure difference switch 8 and described back water pump 6, expansion drum 12.

The present invention also provides a kind of antifreeze control method of air conditioner heat pump hot water, with reference to Fig. 2, in one embodiment, institute The antifreeze control method stating air conditioner heat pump hot water comprises the following steps:

Water temperature at step S1, unit water system part to be detected in water circulation pipe of collection air conditioner heat pump hot water Value;

In the present embodiment, part to be detected includes water-side heat 3, water flow switch 5, back water pump 6, water compensating valve 7, pressure reduction are opened Close the structures such as 8, in order to prevent these parts in water circulation pipe from occurring freezing, can be according to the respective performance parameter of these parts And construction size, correspond to and set up corresponding assisted heating device.

It is correspondingly provided with temperature sensor at these parts, as water-side heat 3 influent side and water outlet side, pressure difference switch 8, return It is correspondingly provided with temperature sensor M1 at water pump 6, water flow switch 5 and water compensating valve 7Enter、M1Go out, M2~M5, to be checked by gathering each Survey the water temperature value at part, and the magnitude relationship according to water temperature value and corresponding design temperature, it is determined whether the corresponding auxiliary of unlatching Heater.

Step S2, when detect the water temperature value at any one part to be detected be less than corresponding set temperature value, then start Assisted heating device at corresponding component, to improve the temperature of this part and the water temperature of water system.

In the present embodiment, it is less than corresponding set temperature value when the water temperature value at any one part to be detected is detected, then Start the assisted heating device at corresponding component, temperature sensor M1Enter、M1Go out, M2~M5 detection temperature be respectively TWater inlet、TWater outlet、 T2、T3、T4、T5, specific as follows:

1st, when Min (T is detectedWater outlet,TWater inlet)<TSet 1In the case of, 1. the assisted heating device of water-side heat 3 is opened, when Min(TWater outlet,TWater inlet)≥TSet 1+N1Then close;

2nd, when T is detected2<TSet 2In the case of device 2. open, work as T2≥TSet 2+N2Then 2. assisted heating device closes;

3rd, when T is detected3<TSet 3In the case of device 3. open, work as T3≥TSet 3+N3Then 3. assisted heating device closes;

4th, assisted heating device no matter unit operation or holding state, when detecting T4<TSet 4In the case of, then start and add 4. thermal, works as T4≥TSet 4+N4Then 4. assisted heating device closes;

5th, when T is detected5<TSet 5In the case of device 5. open, work as T5≥TSet 5+N5Then 5. assisted heating device closes.

So, by starting the assisted heating device at corresponding component, temperature and the water system of this part can be improved Water temperature, such that it is able to prevent part to be detected from freezing.

The antifreeze control method of the air conditioner heat pump hot water that the present invention provides, by gathering air conditioner heat pump hot water 100 Water temperature value at unit water system part to be detected in water circulation pipe, when detecting the water temperature at any one part to be detected Value be less than corresponding set temperature value, then start corresponding component at assisted heating device, with improve this part temperature and The water temperature of water system.So, the present invention can solve air conditioner heat pump hot water 100 because the water temperature in water system too low, and lead to The each part of water system occur freezing and the problem freezed, such that it is able to improve the stability of air conditioner heat pump hot water 100.

In the first embodiment, as shown in figure 3, on the basis of shown in above-mentioned Fig. 2, also including after described step S2:

Step S3, the heat time heating time of the described assisted heating device of acquisition;

Step S4, when described heat time heating time be more than the predetermined heat time when, if the water temperature value at any part is detected Still less than corresponding set temperature value, then described air conditioner heat pump hot water 100 is controlled to open water pump, so that in described water system Static water circulation flowing.

In the present embodiment, after starting corresponding assisted heating device, assisted heating device can be obtained regularly or in real time Heat time heating time.After starting corresponding assisted heating device, can timing or real-time obtain assisted heating device heating when Between and any part at water temperature value, if being more than the predetermined heat time heat time heating time as 5min, and any detecting Water temperature value at part still less than corresponding set temperature value, then can control air conditioning hot pump hot water machine to open water pump, so that Static water circulation flowing in water system, thus improving the overall water temperature of water system, and then prevents each part from freezing.

It is understood that the concrete value of predetermined heat time is not limited to the numerical value enumerated in the present embodiment, can Rationally to arrange according to actual needs.

In a second embodiment, as shown in figure 4, on the basis of shown in above-mentioned Fig. 3, also including after described step S4:

Step S5, the run time of the described water pump of acquisition;

Step S6, when described run time be more than the predetermined running time when, if the water temperature value at any part is detected Still less than corresponding set temperature value, then described air conditioner heat pump hot water 100 is controlled to start shooting and run heating mode.

In the present embodiment, after air conditioning hot pump hot water machine opens water pump unlatching operation, water pump can be detected in real time or regularly Run time and any part at water temperature value, if the run time of water pump is more than the scheduled time as 5min, and detect Any part at water temperature value still less than corresponding set temperature value, then control described air conditioner heat pump hot water 100 to open Machine simultaneously runs heating mode, plays the purpose of antifreeze effect to reach the quick water temperature improving water system.

In one embodiment, on the basis of shown in above-mentioned Fig. 1, described step S1 further includes:

When described air conditioner heat pump hot water 100 runs refrigeration mode, the unit water system of collection air conditioner heat pump hot water 100 Water temperature value at water-side heat 3 in water circulation pipe.

The present embodiment is applied to summer, when air conditioner heat pump hot water 100 runs refrigeration mode, due to water system and coolant Various lack of standardization installation of system leads to the discharge of water system low with reasons such as misoperations, all can lead in air-conditioner water system Water temperature too low and freeze.In order to solve this technical problem, can only gather the unit water system of air conditioner heat pump hot water 100 Water temperature value at water-side heat 3 in water circulation pipe, when detecting Min (TWater outlet,TWater inlet)<TSet 1When, water side can be controlled 1. the assisted heating device of heat exchanger 3 is opened, as Min (TWater outlet,TWater inlet)≥TSet 1+N1Then close assisted heating device 1..

When open the assisted heating device of water-side heat 3 1. when, unit report water side water temperature can be controlled too low simultaneously Error protection and shut down, with reach remind user's shutdown inspection maintenance purpose.

In one embodiment, as shown in figure 5, on the basis of shown in any one of above-mentioned Fig. 2 to Fig. 4, described air conditioner heat The antifreeze control method of pump hot water machine also includes:

When step S7, described air conditioner heat pump hot water are in standby mode, obtain current outdoor ambient temperature;

Step S8, when described current outdoor ambient temperature be less than predetermined outdoor environment temperature when, execution step S1.

The present embodiment is applied to winter low temperature standby mode, can detect current outdoor ambient temperature in real time or regularly, when When current outdoor ambient temperature is less than predetermined outdoor environment temperature such as zero degree, the assisted heating device at all parts can be controlled Opened according to corresponding condition.Ibid, here is omitted for concrete grammar.

These are only the preferred embodiments of the present invention, not thereby limit the present invention the scope of the claims, every using this Equivalent structure or equivalent flow conversion that bright description and accompanying drawing content are made, or directly or indirectly it is used in other related skills Art field, is included within the scope of the present invention.

Claims (10)

1. a kind of antifreeze control method of air conditioner heat pump hot water is it is characterised in that the antifreeze control of described air conditioner heat pump hot water Method processed comprises the following steps:
Water temperature value at S1, unit water system part to be detected in water circulation pipe of collection air conditioner heat pump hot water;
S2, when detect the water temperature value at any one part to be detected be less than corresponding set temperature value, then start corresponding component The assisted heating device at place, to improve the temperature of this part and the water temperature of water system.
2. the antifreeze control method of air conditioner heat pump hot water as claimed in claim 1 is it is characterised in that described take office when detection Water temperature value at what part is less than corresponding set temperature value, then start the assisted heating device at corresponding component, to improve Also include after the step of the water temperature of the temperature of this part and water system:
Obtain the heat time heating time of described assisted heating device;
When being more than the predetermined heat time, if water temperature value at any part is detected still less than correspondence described heat time heating time Set temperature value, then control described air conditioner heat pump hot water to open water pump, so that static water circulation stream in described water system Dynamic.
3. air conditioner heat pump hot water as claimed in claim 2 antifreeze control method it is characterised in that described when described heating When time is more than the scheduled time, if water temperature value at any part is detected still less than corresponding set temperature value, control Make described air conditioner heat pump hot water and open water pump, so that also wrapping after the static step of water circulation flowing in described water system Include:
Obtain the run time of described water pump;
When described run time is more than the predetermined running time, if water temperature value at any part is detected still less than correspondence Set temperature value, then control described air conditioner heat pump hot water to start shooting and run heating mode.
4. the antifreeze control method of air conditioner heat pump hot water as claimed in claim 1 is it is characterised in that described step S1 bag Include:
When described air conditioner heat pump hot water runs refrigeration mode, the unit water system of collection air conditioner heat pump hot water is in water-circulating pipe Water temperature value at water-side heat in road.
5. the antifreeze control method of air conditioner heat pump hot water as claimed in claim 1 is it is characterised in that described air-conditioning heat pump is warm The antifreeze control method of water dispenser also includes:
When described air conditioner heat pump hot water is in standby mode, obtain current outdoor ambient temperature;
When described current outdoor ambient temperature is less than predetermined outdoor environment temperature, execution step S1.
6. a kind of air conditioner heat pump hot water is it is characterised in that described air conditioner heat pump hot water includes outdoor unit and water circulation System, described water circulation system is at each part in water circulation pipe at least provided with an assisted heating device.
7. air conditioner heat pump hot water as claimed in claim 6 is it is characterised in that described water circulation system includes and described outdoor The water-side heat that unit connects and described water-side heat successively and form the terminal unit of loop, water flow switch, backwater Pump, described terminal unit is connected to the influent side of described water-side heat, and described back water pump is connected to described water-side heat Water outlet side.
8. air conditioner heat pump hot water as claimed in claim 7 is it is characterised in that described water circulation system is also included positioned at described Water compensating valve between water-side heat influent side and described terminal unit, and the water inlet of the described water-side heat of one end connection Side, the other end connects the pressure difference switch of described water outlet side.
9. air conditioner heat pump hot water as claimed in claim 8 is it is characterised in that described water-side heat influent side and water outlet It is correspondingly provided with temperature sensor at side, pressure difference switch, back water pump, water flow switch and water compensating valve.
10. air conditioner heat pump hot water as claimed in claim 6 is it is characterised in that described assisted heating device is electrical heating wire Or electrically heated rod.
CN201611005369.7A 2016-11-14 2016-11-14 Hot water heater of air conditioning heat pump and antifreezing control method therefor CN106440583A (en)

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CN201611005369.7A CN106440583A (en) 2016-11-14 2016-11-14 Hot water heater of air conditioning heat pump and antifreezing control method therefor

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Application Number Priority Date Filing Date Title
CN201611005369.7A CN106440583A (en) 2016-11-14 2016-11-14 Hot water heater of air conditioning heat pump and antifreezing control method therefor

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
CN107192184A (en) * 2017-05-25 2017-09-22 重庆美的通用制冷设备有限公司 Antifreeze method, device and the water-cooling screw rod unit of water-cooling screw rod unit
CN107461925A (en) * 2017-08-14 2017-12-12 宁波奥克斯电气股份有限公司 A kind of heat pump machine and antifreeze control method
CN107726633A (en) * 2017-10-12 2018-02-23 广东美的暖通设备有限公司 Heat pump water-heating machine and its anti-freeze control method and device
CN107940665A (en) * 2017-11-10 2018-04-20 广东志高暖通设备股份有限公司 A kind of intelligent control method of air-conditioning temperature control heating
CN108317687A (en) * 2018-02-05 2018-07-24 珠海格力电器股份有限公司 Anti-freezing energy-saving control method, device and air-conditioner set
CN109269166A (en) * 2017-07-18 2019-01-25 同方人工环境有限公司 A kind of heat pump system winter shuts down antifreeze control method

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CN104676993A (en) * 2015-02-13 2015-06-03 广东芬尼克兹节能设备有限公司 Standby anti-freezing control method
CN204923352U (en) * 2015-08-25 2015-12-30 北京振兴华龙制冷设备有限责任公司 Air conditioning equipment unit water pump protection device that prevents frostbite

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CN201392015Y (en) * 2009-02-13 2010-01-27 海尔集团公司 Anti-freezing structure of outdoor hot water apparatus
CN101738036A (en) * 2009-12-28 2010-06-16 哈尔滨工业大学 Water chilling unit with self freeze-proofing function
WO2012164684A1 (en) * 2011-05-31 2012-12-06 三菱電機株式会社 Temperature adjusting system, air conditioning system, and control method
CN104676993A (en) * 2015-02-13 2015-06-03 广东芬尼克兹节能设备有限公司 Standby anti-freezing control method
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107192184A (en) * 2017-05-25 2017-09-22 重庆美的通用制冷设备有限公司 Antifreeze method, device and the water-cooling screw rod unit of water-cooling screw rod unit
CN109269166A (en) * 2017-07-18 2019-01-25 同方人工环境有限公司 A kind of heat pump system winter shuts down antifreeze control method
CN107461925A (en) * 2017-08-14 2017-12-12 宁波奥克斯电气股份有限公司 A kind of heat pump machine and antifreeze control method
CN107461925B (en) * 2017-08-14 2019-10-29 宁波奥克斯电气股份有限公司 A kind of heat pump machine and antifreeze control method
CN107726633A (en) * 2017-10-12 2018-02-23 广东美的暖通设备有限公司 Heat pump water-heating machine and its anti-freeze control method and device
CN107940665A (en) * 2017-11-10 2018-04-20 广东志高暖通设备股份有限公司 A kind of intelligent control method of air-conditioning temperature control heating
CN107940665B (en) * 2017-11-10 2020-06-02 广东志高暖通设备股份有限公司 Intelligent control method for temperature control and heating of air conditioner
CN108317687A (en) * 2018-02-05 2018-07-24 珠海格力电器股份有限公司 Anti-freezing energy-saving control method, device and air-conditioner set

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Application publication date: 20170222