CN105091435B - Defrosting control method - Google Patents
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- CN105091435B CN105091435B CN201410202130.3A CN201410202130A CN105091435B CN 105091435 B CN105091435 B CN 105091435B CN 201410202130 A CN201410202130 A CN 201410202130A CN 105091435 B CN105091435 B CN 105091435B
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Abstract
The present invention provides a kind of defrosting control methods.The defrosting control method includes step：Pre- judgment step：Judge whether unit meets defrost requirement, defrost requires to include：Unit heats continuous operation predetermined time T1, and the outer machine tube temperature of unit is less than the first preset value in predetermined time T2, and the inflow temperature of the end of unit is higher than the second preset value, and the leaving water temperature of the end of unit is higher than third preset value；Defrosting control step：If the operating status of unit meets defrost requirement, unit is made to enter defrost operating status.The defrosting control method of the present invention can be carried out rapidly and accurately, improve the defrost efficiency of unit.
Description
Technical field
The present invention relates to air-conditioning technical fields, more particularly, to a kind of defrosting control method.
Background technology
Indoor end (includes but not limited to that fan coil, grounding heat coil tube, low-temperature radiator, capillary network and radiation are hung
Top etc.) air-conditioning system (including multi-connected machine) that uses refrigerant, when heating defrost indoors, absorbs heat, often lead to from indoor environment
Indoor temperature declines 2 DEG C or more, influences indoor comfort.
Indoor end uses the air-conditioning system of water, when heating defrost indoors, lack corresponding intelligent control, only according to room
Outer machine tube temperature judges the case where being required into defrost and ignoring water side, this, which often leads to indoor heating amount, occurs in influence of fluctuations room
Comfort or defrost it is slow and with refrigerant/water- to-water heat exchanger by the danger of bursting by freezing.
Case above shows：Using indoor end defrost, water system has certain compared with coolant system on comfort
Advantage.But due to using water system defrost, there is complexity, lack corresponding intelligent control at present, often will appear interior
Fluctuating and influencing comfort occur in heating load, or causes defrost slow since water temperature is too low and refrigerant/water- to-water heat exchanger is being changed
There is the danger being damaged by frost during frost.Inventor has found, develops a kind of intelligent control method using indoor unit water system defrost,
It is necessary to.
Invention content
The present invention is intended to provide a kind of defrosting control method, can control the defrost of indoor unit water circulation system well
System.
In order to solve the above technical problems, the present invention provides a kind of defrosting control method, which includes step
Suddenly：Pre- judgment step：Judge whether unit meets defrost requirement, defrost requires to include：Unit heats the continuous operation predetermined time
T1, and the outer machine tube temperature of unit is less than the first preset value in predetermined time T2, and the inflow temperature of the end of unit is higher than the
Two preset values, and the leaving water temperature of the end of unit is higher than third preset value；Defrosting control step：If the operating status of unit
Meet defrost requirement, then unit is made to enter defrost operating status.
Further, in defrosting control step, if unit meets defrost requirement, the operating status of unit is maintained,
And the working frequency of the middle compressor of unit is adjusted according to environment temperature, and the auxiliary electrical heater in unit is not turned on to be changed
White operating status.
Further, during adjusting compressor frequency, the work frequency of compressor is made if environment temperature is lower
Rate is higher.
Further, defrosting control method further includes：Defrost exit step：According to the operating status of unit, unit is judged
Whether meet defrost and exit requirement, if unit meets defrost and exits requirement, unit is made to exit defrost operating status, if machine
Group is unsatisfactory for defrost and exits requirement, then continues to execute defrosting control step, until unit meets defrost and exits requirement；Defrost is exited
It requires to include：Unit defrost operation reaches predetermined time T3；Or the outer machine tube temperature of unit is pre- higher than the 4th in predetermined time T4
If value；Or the inflow temperature of the end of unit is less than the 5th preset value；Or the end inflow temperature of unit and the end of unit go out
The temperature difference between coolant-temperature gage is less than the 6th preset value Δ t；Or the refrigerant side low pressure of unit is less than preset value P.
Further, pre- judgment step further includes：If unit heats continuous operation predetermined time T1, and the outer machine of unit
Tube temperature is less than the first preset value in predetermined time T2, but the inflow temperature of the end of unit is less than the second preset value, and unit
End leaving water temperature be less than third preset value, then increase the frequency of the compressor in unit, unit made to meet defrost requirement.
Further, it in pre- judgment step, if after the frequency raising predetermined time T of compressor is peaceful, is still unsatisfactory for
Defrost requirement, then open the auxiliary electrical heater in unit, the inflow temperature of the end of unit made to add 5 DEG C higher than the second preset value,
And the outlet water at tail end temperature of unit is made to be higher than third preset value.
Further, in defrosting control step, if unit meets defrost requirement, and the end inflow temperature of unit with
The temperature difference of outlet water at tail end temperature is more than the 7th preset value, then the wind turbine of the mandatory end for closing unit, while making to press in unit
The working frequency of contracting machine improves the 8th predetermined value.
Further, during promoting compressor frequency, if between the current frequency and highest frequency of compressor
Difference be less than the 9th preset value, then open the auxiliary electrical heater in unit.
Further, after unit enters defrost operating status predetermined time T5, if detecting the water inlet of the end of unit
The temperature difference between the leaving water temperature of the end of temperature and unit adds 3 DEG C less than Δ t, then the frequency of the compressor of unit is reduced per 10s
Rate 5Hz.
Further, after unit enters defrost operating status predetermined time T5, if detecting, refrigerant side low pressure is less than
Preset value P1 then reduces the frequency 5Hz of the compressor of unit, wherein the corresponding saturations of the corresponding saturation temperature=P of P2 per 10s
+ 2 DEG C of temperature.
Further, during reducing the compressor of unit, the frequency reducing of compressor is no more than 20Hz.
It applies the technical scheme of the present invention, defrosting control method of the invention specifically defines the tool of defrost various stages
Body control measure, and the beginning of defrost is completed according to specific condition and carries out the control of process so that defrost process can
It rapidly and accurately carries out, improves the defrost efficiency of unit.
Description of the drawings
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 diagrammatically illustrates the defrosting system figure of the unit in the present invention.
Reference sign：10, compressor；20, four-way valve；30, refrigerant/water heat exchanger；40, throttling set；50, empty
Air source heat exchanger；60, electrical heating；70, end.
Specific implementation mode
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be defined by the claims
Implement with the multitude of different ways of covering.
Fig. 1 diagrammatically illustrates the defrosting system figure of the unit of the present invention, and the arrow direction in Fig. 1 indicates the flowing side of water
To.With reference to the specific work process of the defrosting system of the present invention：
One, normal heating process
Refrigerant side：The high-temperature high-pressure refrigerant gas come out from compressor 10 goes out from the D mouths of four-way valve 20 into E mouthfuls
Come, into refrigerant/water heat exchanger 30, after transferring heat to water, is condensed into geothermal liquid in high pressure, into throttling set 40,
Become two phase of low-temp low-pressure after throttling, the heat into draw air in air source heat exchanger 50 is gasificated into low-temp low-pressure
Gas comes out into S mouthfuls from the C mouths of four-way valve 20, is finally sucked by compressor 10, completes a heating cycle.
Water side：The high-temperature-hot-water come out from refrigerant/water heat exchanger 30 enters end 70, and in end 70, heat is passed
Pass ambient enviroment and temperature reduces, the water after temperature reduces enters refrigerant/water heat exchanger 30, the heat in draw refrigerant
As high-temperature-hot-water, a heating cycle is completed.
Two, defrost operational process
Refrigerant side：The high-temperature high-pressure refrigerant gas come out from compressor 10 goes out from the D mouths of four-way valve 20 into C mouthfuls
Come, into air source heat exchanger 50, after transferring heat to hoar crystal, be condensed into geothermal liquid in high pressure, into throttling set 40, section
Become two phase of low-temp low-pressure after stream, into refrigerant/water heat exchanger 30, the heat in extract water is gasificated into low-temp low-pressure gas
Body comes out into S mouthfuls from the E mouths of four-way valve 20, is finally sucked by compressor 10, completes a defrost cycle.
Water side：The warm water come out from refrigerant/water heat exchanger 30 enters end 70, in end 70, transfers heat to
Ambient enviroment and temperature reduce, and the water after temperature reduces enters refrigerant/water heat exchanger 30, transfers heat to refrigerant, temperature
Degree reduces, and completes a defrost cycle.
It should be noted that this method uses the air-conditioning system heating defrost of water for indoor end.Here end packet
Include but be not limited to fan coil, grounding heat coil tube, low-temperature radiator, capillary network and radiation ceiling etc..Water circuit system setting is auxiliary
Electrical heating 60, refrigerant system is helped to use frequency-changeable compressor and frequency conversion fan, setting environment temperature sensing package (not shown), tube temperature
Temperature sensing package (not shown), end confession/return water temperature sensing package (not shown), refrigerant side low pressure sensor (do not show in figure
Go out), monitoring of environmental temperature, outdoor unit tube temperature temperature, end confession/return water temperature respectively, refrigerant side low pressure.
According to an embodiment of the invention, a kind of defrosting control method is provided, the step of defrosting control method includes：In advance
Judgment step：Judge whether unit meets defrost requirement, defrost requires to include：Unit heats continuous operation predetermined time T1, and
The outer machine tube temperature of unit is less than the first preset value in predetermined time T2, and the inflow temperature of the end 70 of unit is pre- higher than second
If value, and the leaving water temperature of the end 70 of unit is higher than third preset value；Defrosting control step：If the operating status of unit is full
The foot defrost requirement, then make unit enter defrost operating status.Defrost exit step：According to the operating status of unit, judge
Whether unit, which meets defrost, is exited requirement, if unit meets defrost and exits requirement, so that unit is exited defrost operating status, such as
Fruit unit is unsatisfactory for defrost and exits requirement, then continues to execute defrosting control step, until unit meets defrost and exits requirement.According to
The control method of the present embodiment specifies the control condition of defrost various stages so that defrost process can be rapidly and accurately
It carries out, improves the defrost efficiency of unit.
The specific control process for each step of defrosting control method that lower mask body introduces the present embodiment：
One, pre- judgment step
First, it is determined that whether the operating status of unit disclosure satisfy that defrost requirement, specifically, if unit heating is continuous
Predetermined time T1 is run, and the outer machine tube temperature t tube temperatures of unit are less than the first preset value, and the end of unit in predetermined time T2
70 inflow temperature tEnd intoHigher than the second preset value, and the 70 leaving water temperature t of end of unitEnd goes outHigher than third preset value, when unit is full
When sufficient above-mentioned condition, unit meets defrost and enters requirement, and unit is made to enter defrost operating status.In the present embodiment, first
Preset value be -1 DEG C, the second preset value within the scope of 40 DEG C to 45 DEG C, third preset value in the range of 15 DEG C to 20 DEG C,
Specifically it can make and change according to the operating condition of unit.T1 is used for defining the practical frosting situation of unit, and it is frequent to avoid the occurrence of unit
Defrost.The value determines by experiment, is according to unit in the case that severe defrosting (generally 0/0 DEG C), and continuous operation to outer machine is changed
All there is the time of 70% decaying to hot device in the full frost of knot, ability, and preferably T1 is 40~50min.T2 mainly considers tube temperature
Fluctuation interference, only continuous two data collection cycles all collect tube temperature be less than some numerical value, can just think that tube temperature is true
Real less than some numerical value, it is 1~2min generally to take two data collection cycles, preferably T2.
Preferably, before unit enters defrost operating status, as unit continuous operation predetermined time T1, and unit is outer
Machine tube temperature tTube temperatureIt is less than the first preset value in predetermined time T2, but the inflow temperature of the end 70 of unit is less than the second preset value
When, and the leaving water temperature of the end 70 of unit is less than third preset value, then increases the frequency of the compressor 10 in unit, make unit
Meet defrost requirement, and then the hoar crystal in machine set system is melted.It should be noted that in order to make unit satisfaction as early as possible
Frost require, and in view of compressor 10 performance itself, in the working frequency of the compressor 10 in increasing unit, be not by
10 moment of compressor is increased to some frequency values, but uses periodically raised mode, i.e., raising 5Hz in each cycle, and one
A period is preferably 40S.
Preferably, if after the frequency raising predetermined time T of compressor 10 is peaceful, it is still unsatisfactory for defrost requirement, then is opened
Auxiliary electrical heater 60 heats the water in unit pipeline, and the inflow temperature of the end 70 of unit is made to be higher than the second preset value
Add 5 DEG C, and 70 leaving water temperature of end of unit is made to be higher than third preset value.Then unit is made to enter defrost operating status, at this point,
The operating status of end 70 is constant, and compressor 10 and auxiliary electrical heater 60 are also constant.In the present embodiment, why make unit
The inflow temperature of end 70 add 5 DEG C higher than the second preset value, allow for the demand heat of script unit very it is big (
Need to open the auxiliary heat of electricity), if only reaching the second preset value, water temperature will soon be drawn after entering defrost operating status
Low, heat can be seriously inadequate, and 5 DEG C are mainly considered that the standard of the disengaging water temperature difference of end 70 is 5 DEG C, adds other temperature values
When, too small to influence heat, too big meeting waste of energy again.
Two, defrosting control step
When unit meets defrost requirement, defrost operation is opened, and maintain the working condition of unit constant, at this time, it may be necessary to
The working frequency of compressor 10 in unit is adjusted according to environment temperature, and opens the auxiliary electrical heater 60 in unit.According to outdoor
Environment temperature, so that compressor 10 is used corresponding defrost frequency, specific choice mode is：Outdoor environment temperature is lower, then presses
The frequency of contracting machine 10 will be opposite it is higher, avoid defrosting operation influence environmental amenity.
Above-mentioned defrost operating status is the normal defrost operating status of unit, and in actually controlling, there is also some for unit
Special operating status, according to the special operating status of unit, the defrosting control step of the application also has special controlling party
Formula, the special defrosting control step specifically include：
(1) if unit meets defrost requirement, and the temperature difference of 70 inflow temperature of end and 70 leaving water temperature of end of unit
More than the 7th preset value, then the wind turbine (not marked in figure) of the mandatory end 70 for closing unit, while making compressor in unit
10 working frequency improves the 8th predetermined value, and the 7th preset value here is 30 DEG C, and the 8th preset value is 10Hz, the present invention's
In other embodiment, it can be made the appropriate adjustments according to the working condition of unit.In the present embodiment, when the end of unit 70 intakes
Ability, which exports, when temperature and the temperature difference of 70 leaving water temperature of end are more than 30 DEG C, then when unit enters defrost is not enough to maintain end system
Heat+defrost demand heat, therefore mandatory closing tail-end blower fan is wanted after entering defrost, while making the frequency of compressor 10 in unit
It carries out improving 10Hz on the basis of normal defrost.
Preferably, during promoting 10 frequency of compressor, if the compressor 10 when love by frequency with
Difference between highest frequency is less than the 9th preset value, i.e. 15Hz then opens auxiliary electrical heater 60, avoids 10 working frequency of compressor
It is excessively high and damage compressor 10.
(2) in defrosting control step, when unit enters defrost predetermined time T5, i.e. after 1min, if detecting unit
The temperature difference between the inflow temperature of end 70 and the leaving water temperature of the end 70 of unit is less than t+3 DEG C of Δ, and Δ t here generally takes
, then the frequency 5Hz of the compressor 10 of unit is reduced per 10s, maintain the stability of itself frequency reducing of compressor 10, avoid by 8~12 DEG C
The water inlet end and water outlet excessive temperature differentials of end 70 and influence indoor comfort.
In order to ensure indoor comfort, similarly, in defrosting control step, when unit enters defrost predetermined time T5
Afterwards, if detecting, refrigerant side low pressure is less than preset value P1, and the frequency 5Hz of the compressor 10 of unit is reduced per 10s, wherein
Corresponding+2 DEG C of the saturation temperatures of the corresponding saturation temperature=P of P2, the corresponding refrigerant saturation temperatures of P are 1~2 DEG C.
Preferably, during reducing compressor 10 of unit, the frequency reducing of compressor 10 is no more than 20Hz, if drop
Frequency is more than 20Hz, then defrost frequency is very low at this time, is not enough to provide the energy needed for defrost, the defrost time can be very long.
Therefore, make the frequency reducing of compressor 10 no more than 20Hz, it is ensured that the energy output needed for defrost, it is ensured that the defrost time will not
Drag very long.
Three, defrost exit step
In this step, the operating status according to unit is needed, judges whether unit meets defrost and exit requirement, if
Unit meets defrost and exits requirement, then so that unit is exited defrost operation, if unit is unsatisfactory for defrost and exits requirement, continue to hold
Row defrosting control step, until meeting defrost exits requirement.
Specifically, can to carry out the case where operation is exited in defrost as follows：
(1) unit defrost operation reaches predetermined time T3, and tube temperature detects when the setting of T3 is mainly prevented due to defrost
Show failure and defrost cannot be exited for a long time.The value is determined that the required time cleaner than outer machine defrost under normal circumstances is long by experiment,
Generally take 8min.
(2) outer machine tube temperature is higher than the 4th preset value in predetermined time T4, and the 4th preset value here is 15 DEG C, and T4's sets
It is fixed similar with T2, mainly consider the interference of tube temperature fluctuation, generally takes two data collection cycles.T4 is usually 5S.T4 is remote
Less than T2, shorten defrost detection time as possible.
(3) 70 inflow temperature of end of unit is less than the 5th preset value, and the 5th preset value here is 9 DEG C, avoids temperature
Difference is excessive and influences environmental amenity.
(4) temperature difference between 70 inflow temperature of end of unit and 70 leaving water temperature of end of unit is less than Δ t, Δ t master
If considering the problems of indoor comfort, if the value is excessive, prove that indoor leaving air temp cannot meet comfort need
It asks, generally takes 8~12 DEG C.
(5) the refrigerant side low pressure of unit be less than P, P values be plate be damaged by frost when critical pressure, the corresponding system of the value
Cryogen saturation temperature is 1~2 DEG C.
When the operating status of unit meets any one in the above situation, unit is made to exit defrost operating status, changed
White process is completed.
According to the abovementioned embodiments of the present invention it is recognised that the present invention can realize following effect：
(1) clearly enter the condition that defrost should meet.This method passes through the Inlet and outlet water temperature conditions for detecting end and outer machine
Tube temperature, complete machine continuous operating time judge whether meet into defrost condition.
(2) condition that defrost should meet clearly is exited.This method by detect end Inlet and outlet water situation and outer machine tube temperature,
Defrost run time and medium side low pressure judge whether to meet and release defrost condition.
(3) ensure the rapidity of defrost.This method is by relatively low in end inflow temperature, and outer machine reaches defrost condition
When, water temperature is improved in advance, ensures quick defrost.
(4) in defrost, indoor comfort is maintained.This method is carried when end disengaging water temperature difference is larger by water system
Preceding accumulation of heat and control indoor fan operating condition are combined, and indoor comfort is maintained in defrost.
(5) when defrost, refrigerant/water- to-water heat exchanger is protected.This method passes in and out water temperature difference and cold by detecting refrigerant/water- to-water heat exchanger
Matchmaker side low pressure adjusts press running frequency, protects heat exchanger, keeps defrost safe and reliable.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of defrosting control method, which is characterized in that including step：
Pre- judgment step：Judge whether unit meets defrost requirement, the defrost requires to include：
The unit heats continuous operation predetermined time T1, and the outer machine tube temperature of the unit is less than first in predetermined time T2
Preset value, and the inflow temperature of the end (70) of the unit is higher than the second preset value, and end (70) of the unit go out
Coolant-temperature gage is higher than third preset value；
Defrosting control step：If the operating status of the unit meets the defrost requirement, the unit is made to enter defrost
Operating status；
The defrosting control method further includes：
Defrost exit step：According to the operating status of the unit, judge whether the unit meets defrost and exit requirement, if
The unit meets the defrost and exits requirement, then the unit is made to exit the defrost operating status, if the unit is not
Meet the defrost and exit requirement, then continue to execute the defrosting control step, until the unit meets the defrost and exits
It is required that；
The defrost, which is exited, to be required to include：
The temperature difference between end (70) inflow temperature of the unit and end (70) leaving water temperature of the unit is less than the 6th
Preset value Δ t.
2. defrosting control method according to claim 1, which is characterized in that in defrosting control step, if the machine
Group meets the defrost requirement, then maintains the defrost operating status of the unit, and adjust the unit according to environment temperature
The working frequency of middle compressor, and the auxiliary electrical heater (60) being not turned in the unit is to carry out the defrost operating status.
3. defrosting control method according to claim 2, which is characterized in that in the process for adjusting the compressor frequency
In, make the working frequency of the compressor higher if environment temperature is lower.
4. defrosting control method according to claim 1, which is characterized in that the pre- judgment step further includes：If institute
Predetermined time T1 described in unit heating continuous operation is stated, and the outer machine tube temperature of the unit is less than institute in the predetermined time T2
The first preset value is stated, but the inflow temperature of the end (70) of the unit is less than second preset value, and the end of the unit
It holds the leaving water temperature of (70) to be less than the third preset value, then increases the frequency of the compressor (10) in the unit, make described
Unit meets the defrost requirement.
5. defrosting control method according to claim 4, which is characterized in that in the pre- judgment step, if described
The frequency of compressor (10) increases predetermined time TIt is peacefulAfterwards, it is still unsatisfactory for the defrost requirement, then opens the auxiliary in the unit
Electrical heating (60) makes the inflow temperature of the end (70) of the unit add 5 DEG C higher than second preset value, and makes the unit
End (70) leaving water temperature be higher than the third preset value.
6. defrosting control method according to claim 1, which is characterized in that in the defrosting control step, if institute
It states unit and meets the defrost requirement, and end (70) inflow temperature of the unit and the temperature difference of end (70) leaving water temperature are big
In the 7th preset value, then the wind turbine of the mandatory end (70) for closing the unit, while making compressor (10) in the unit
Frequency improve the 8th predetermined value.
7. defrosting control method according to claim 6, which is characterized in that in the mistake for promoting compressor (10) frequency
Cheng Zhong opens institute if the difference between the current frequency and highest frequency of the compressor (10) is less than the 9th preset value
State the auxiliary electrical heater (60) in unit.
8. defrosting control method according to claim 1, which is characterized in that run shape when the unit enters the defrost
After state predetermined time T5, if detecting the water outlet of the inflow temperature of the end (70) of the unit and the end (70) of the unit
The temperature difference between temperature adds 3 DEG C less than Δ t, then the frequency 5Hz of the compressor (10) of the unit is reduced per 10s.
9. defrosting control method according to claim 1, which is characterized in that when to enter defrost operating status pre- for the unit
It fixes time after T5, if detecting, refrigerant side low pressure is less than preset value P1, and the compressor (10) of the unit is reduced per 10s
Frequency 5Hz, wherein corresponding+2 DEG C of the saturation temperatures of the corresponding saturation temperature=P of P1.
10. defrosting control method according to claim 8 or claim 9, which is characterized in that in the compressor for reducing the unit
(10) during, the frequency reducing of the compressor (10) is no more than 20Hz.
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| CN201410202130.3A CN105091435B (en) | 2014-05-13 | 2014-05-13 | Defrosting control method |
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| CN105509377A (en) * | 2015-12-22 | 2016-04-20 | 珠海格力电器股份有限公司 | Transcritical co2 circulating system, heat pump water heater and defrosting method |
| CN105823280A (en) * | 2016-03-29 | 2016-08-03 | 青岛海信日立空调系统有限公司 | Defrosting device, defrosting control method, controller and air source heat pump system |
| CN109974296A (en) * | 2017-12-28 | 2019-07-05 | 杭州先途电子有限公司 | A kind of air energy water heater and its Defrost method |
| CN109386966A (en) * | 2018-09-21 | 2019-02-26 | 珠海格力电器股份有限公司 | Defrosting control method, device, storage medium and the heat pump unit of heat pump unit |
| CN109405183B (en) * | 2018-09-25 | 2021-12-24 | 青岛海尔空调电子有限公司 | Air conditioner defrosting method and device, air conditioner, computer equipment and storage medium |
| CN109458700B (en) * | 2018-11-08 | 2020-08-25 | 珠海格力电器股份有限公司 | Multi-online defrosting method and device, storage medium, computer equipment and air conditioner |
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| CN109945399B (en) * | 2019-03-20 | 2020-03-10 | 珠海格力电器股份有限公司 | Defrosting method and air conditioner |
| CN110319631B (en) * | 2019-07-18 | 2020-09-01 | 珠海格力电器股份有限公司 | Defrosting control method and device, storage medium and heat pump unit |
| CN111895606B (en) * | 2020-08-06 | 2021-05-25 | 珠海格力电器股份有限公司 | Anti-freezing control method and air conditioner |
| CN113405288B (en) * | 2021-05-18 | 2022-09-23 | 浙江中广电器集团股份有限公司 | Quick defrosting control method of air source heat pump system |
| CN114963291B (en) * | 2021-06-29 | 2023-11-17 | 青岛海尔新能源电器有限公司 | Heating machine control method, device, equipment and storage medium |
| CN115614927B (en) * | 2022-11-11 | 2024-06-04 | 珠海格力电器股份有限公司 | Air conditioning system and defrosting control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519186A (en) * | 2011-12-21 | 2012-06-27 | 青岛海尔空调电子有限公司 | Defrosting method of air conditioner air-cooled heat pump unit and air conditioner air-cooled heat pump unit |
| CN102997525A (en) * | 2011-09-09 | 2013-03-27 | 珠海格力电器股份有限公司 | Air conditioner and defrosting method and device thereof |
| CN103363614A (en) * | 2012-03-26 | 2013-10-23 | 珠海格力电器股份有限公司 | Air-cooling chilled and hot water air conditioning unit, and defrosting control method and device therefor |
| CN103528188A (en) * | 2013-11-04 | 2014-01-22 | Tcl空调器(中山)有限公司 | Air source hot water machine system and control method thereof |
| CN103574832A (en) * | 2012-07-25 | 2014-02-12 | 珠海格力电器股份有限公司 | Control method, device and system for defrosting of air conditioner |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012013354A (en) * | 2010-07-02 | 2012-01-19 | Panasonic Corp | Heat-pump type hot-water heating device |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997525A (en) * | 2011-09-09 | 2013-03-27 | 珠海格力电器股份有限公司 | Air conditioner and defrosting method and device thereof |
| CN102519186A (en) * | 2011-12-21 | 2012-06-27 | 青岛海尔空调电子有限公司 | Defrosting method of air conditioner air-cooled heat pump unit and air conditioner air-cooled heat pump unit |
| CN103363614A (en) * | 2012-03-26 | 2013-10-23 | 珠海格力电器股份有限公司 | Air-cooling chilled and hot water air conditioning unit, and defrosting control method and device therefor |
| CN103574832A (en) * | 2012-07-25 | 2014-02-12 | 珠海格力电器股份有限公司 | Control method, device and system for defrosting of air conditioner |
| CN103528188A (en) * | 2013-11-04 | 2014-01-22 | Tcl空调器(中山)有限公司 | Air source hot water machine system and control method thereof |
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