CN106196524B - Control device and control method for preventing air conditioner from freezing and air conditioner - Google Patents
Control device and control method for preventing air conditioner from freezing and air conditioner Download PDFInfo
- Publication number
- CN106196524B CN106196524B CN201610631297.0A CN201610631297A CN106196524B CN 106196524 B CN106196524 B CN 106196524B CN 201610631297 A CN201610631297 A CN 201610631297A CN 106196524 B CN106196524 B CN 106196524B
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- heat exchange
- freeze
- exchange branch
- branch pipe
- throttling device
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000007710 freezing Methods 0.000 title abstract description 12
- 230000008014 freezing Effects 0.000 title abstract description 9
- 239000003507 refrigerant Substances 0.000 claims abstract description 23
- 238000005057 refrigeration Methods 0.000 claims abstract description 10
- 230000002528 anti-freeze Effects 0.000 claims description 77
- 108010053481 Antifreeze Proteins Proteins 0.000 claims description 76
- 238000004378 air conditioning Methods 0.000 claims description 42
- 230000004907 flux Effects 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 13
- 238000000926 separation method Methods 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 10
- 230000009467 reduction Effects 0.000 claims description 6
- 230000007123 defense Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000006386 neutralization reaction Methods 0.000 claims 1
- 230000002265 prevention Effects 0.000 abstract 3
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 210000004243 sweat Anatomy 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009790 rate-determining step (RDS) Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a control device and a control method for preventing freezing of an air conditioner and the air conditioner, wherein the control device for preventing freezing of the air conditioner comprises a heat exchanger (1) for evaporation refrigeration, more than two heat exchange branch pipes (11) and a judging unit for judging whether at least one of the more than two heat exchange branch pipes (11) meets the condition of freezing prevention protection; and the adjusting unit is used for adjusting the flow of the heat exchange branch pipe reaching the anti-freezing protection condition so as to enable the flow not to meet the anti-freezing protection condition. By the control device and the control method for preventing the air conditioner from freezing and the air conditioner, whether the heat exchange branch pipe reaches the freezing prevention protection condition or not is judged, and the flow of the heat exchange branch pipe is adjusted, so that the flow of the refrigerant in at least one heat exchange branch pipe is effectively controlled, and the heat exchanger can perform normal refrigeration during freezing prevention protection.
Description
Technical field
The invention belongs to air-conditioning technical fields, and in particular to a kind of control device, control method and the sky of air-conditioning anti-freeze
It adjusts.
Background technique
Common interior machine anti-freezing method is using temperature sensing package detection temperature as interior machine currently on the market in the prior art
The control method of anti-freeze, but the control method of this interior machine anti-freeze is in operation, air-conditioner set can not normally freeze,
Then resulting in comfort level can decrease.
Since often exist cannot be just when carrying out anti-freeze protection control for the interior machine of air-conditioning system in the prior art
Often the technical issues of refrigeration, therefore researching and designing of the present invention goes out control device, control method and the air-conditioning of a kind of air-conditioning anti-freeze.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that air-conditioning system in the prior art is overcome to carry out anti-freeze guarantor
Shield control when can have the defects that normally to freeze, thus provide a kind of control device of air-conditioning anti-freeze, control method and
Air-conditioning.
The present invention provides a kind of control device of air-conditioning anti-freeze comprising for being evaporated the heat exchanger of refrigeration,
Including more than two heat exchange branch pipes,
Further include:
Judging unit, for judging whether at least one of more than two heat exchange branch pipes reach the item of anti-freeze protection
Part；
Unit is adjusted, for adjusting the flow for reaching the heat exchange branch pipe of anti-freeze protective condition so that it is unsatisfactory for anti-freeze
The condition of protection.
Preferably, more than two heat exchange branch pipes are connected to point by converging with the branch line being respectively connected respectively
One end of liquid component, the adjusting unit includes the first throttling device being arranged at least one described branch line.
Preferably, the other end of the liquid separation component connects main refrigerant pipeline, and the adjusting unit further includes being arranged in institute
State the second throttling device on main refrigerant pipeline.
It preferably, further include detection unit, for detecting the temperature of at least one of more than two described heat exchange branch pipes
Degree, and will test result and be transmitted to the judging unit.
Preferably, the detection unit includes temperature temperature sensing package.
The present invention provides a kind of control method of air-conditioning anti-freeze, the control device of air-conditioning anti-freeze above-mentioned, to sky
The heat exchanger of tune freezes to carry out defense controls comprising:
Judgment step, judges whether at least one of more than two heat exchange branch pipes reach the condition of anti-freeze protection；
Regulating step adjusts the flow for reaching the heat exchange branch pipe of anti-freeze protective condition so that it is unsatisfactory for anti-freeze protection
Condition.
Preferably, when adjusting unit includes first throttling device, and when the heat exchange branch pipe being attached thereto reaches anti-freeze
When the condition of protection, first throttling device is adjusted, the cold medium flux flowed through in the heat exchange branch pipe reduces.
Preferably, when adjusting unit further includes second throttling device, second throttling device is adjusted, the heat exchange branch is flowed through
Pipe neutralizes the cold medium flux flowed through in main refrigerant pipeline and reduces.
Preferably, further include detecting step, detect the temperature of at least one of more than two described heat exchange branch pipes, and
It will test result and be transmitted to the judgment step.
Preferably, when the heat exchange branch pipe temperature detected is lower than preset temperature, judge that it meets and enter anti-freeze control
Condition, then the aperture for adjusting first throttling device makes its reduction.
Preferably, when adjusting unit further includes second throttling device, while first throttling device and the second throttling being adjusted
The aperture of device reduces, to reduce the cold medium flux flowed through in heat exchange branch pipe.
The present invention also provides a kind of air-conditionings comprising the control device of air-conditioning anti-freeze above-mentioned.
Control device, control method and the air-conditioning of a kind of air-conditioning anti-freeze provided by the invention have the following beneficial effects:
1. control device, control method and the air-conditioning of air-conditioning anti-freeze through the invention are by judgement heat exchange branch pipe
It is no to reach anti-freeze protective condition and adjust heat exchange branch pipe flow, to effectively achieve at least one heat exchange branch pipe
Cold medium flux is controlled, and enables to heat exchanger that can also normally be freezed when carrying out anti-freeze protection；
2. control device, control method and the air-conditioning of air-conditioning anti-freeze through the invention, by least one heat exchange
First throttling device is set on the branch line of branch pipe, it can be at least one for needing most and be easiest to reach anti-freeze protection
The branch pipe that exchanges heat carries out throttling action, can be effectively reduced the flow flowed through in the heat exchange branch pipe, to carry out anti-freeze guarantor to it
Shield, while also can be carried out normal refrigeration, it realizes and accurately, is targetedly controlled；
3. control device, control method and the air-conditioning of air-conditioning anti-freeze through the invention, in the main refrigerant of liquid separation component
The mode of second throttling device is also set up on pipeline, it can be to the main refrigerant pipeline of the heat exchange branch pipe flowed through in each branch line
Throttling control is carried out, it is cold all the way or in a few road branch lines so as to be effectively prevented to control total cold medium flux
The case where matchmaker reduces, the cold medium flux in another way or a few road branch lines but increases, effectively avoids adjustment process from will lead to it
He exchanges heat branch pipe the occurrence of freezing frosting；
4. control device, control method and the air-conditioning of air-conditioning anti-freeze through the invention pass through detection heat exchange Zhi Guanwen
The mode of degree, can efficiently and accurately judge some or multiple heat exchange branch pipes in interior machine whether be in frozen state,
Or frozen state will be entered, to be judged in advance and be accurately controlled according to testing result, guarantee that each heat exchange branch pipe is equal
Can normally refrigerating operaton and frost-free or it freeze.
Detailed description of the invention
Fig. 1 is the system structure diagram of the control device of air-conditioning anti-freeze of the invention；
Fig. 2 is the flow diagram of the preferred method of the control method of air-conditioning anti-freeze of the invention.
Description of symbols:
1-heat exchanger, 11-heat exchange branch pipes, 2-branch lines, 3-liquid separation components, 4-first throttling devices, 5-is main
Refrigerant pipeline, 6-second throttling devices, 7-temperature temperature sensing packages, 8-gas collecting tubes.
Specific embodiment
As shown in Figure 1, the present invention provides a kind of control device of air-conditioning anti-freeze comprising for being evaporated refrigeration
Heat exchanger 1 comprising more than two heat exchange branch pipes 11, further includes:
Judging unit, for judging whether at least one of more than two heat exchange branch pipes 11 reach anti-freeze protection
Condition；
Unit is adjusted, for adjusting the flow for reaching the heat exchange branch pipe of anti-freeze protective condition so that it is unsatisfactory for anti-freeze
The condition of protection.
The control device of air-conditioning anti-freeze through the invention, by the more than two heat exchange branch pipes for being directed to sweat cooling
(i.e. evaporator) is controlled, and judges whether at least one heat exchange branch pipe reaches anti-freeze protective condition and adjust heat exchange branch
Pipe flow is controlled to effectively achieve cold medium flux in exchange hot leg pipe, heat exchanger is enabled to carry out anti-freeze
Can also normally it be freezed when protection, to will not influence indoor level of comfort.
Preferably, one end of more than two heat exchange branch pipes 11 with the branch line 2 being respectively connected respectively by converging
Conjunction is connected to one end of liquid separation component 3, the other end converges and is connected to gas collecting tube 8, and the adjustings unit includes setting at least one
First throttling device 4 on a branch line 2.By the way that first segment is arranged on the branch line of at least one heat exchange branch pipe
Device is flowed, it can be to needing most and being easiest to reach at least one heat exchange branch pipe progress throttling action of anti-freeze protection, it can
The flow flowed through in the heat exchange branch pipe is effectively reduced, to carry out anti-freeze protection to it, while also can be carried out normal refrigeration, it is real
Now accurately, targetedly controlled.
Preferably, the other end of the liquid separation component 3 connects main refrigerant pipeline 5, and the adjusting unit further includes that setting exists
Second throttling device 6 on the main refrigerant pipeline.Second throttling device is also set up on the main refrigerant pipeline of liquid separation component
Mode can carry out throttling control to the main refrigerant pipeline of the heat exchange branch pipe flowed through in each branch line, to total refrigerant
Flow is controlled, and is reduced so as to be effectively prevented refrigerant all the way or in a few road branch lines, another way or a few road branched pipes
The case where cold medium flux in road but increases effectively avoids adjustment process from will lead to the hair that other heat exchange branch pipes freeze frosting situation
It is raw.
Preferably, further include detection unit, changed for detecting at least one of more than two described heat exchange branch pipes 11
The temperature of hot leg pipe 11, and will test result and be transmitted to the judging unit.By setting detection unit to detect heat exchange branch pipe
The mode of temperature, can efficiently and accurately judge whether some or the multiple heat exchange branch pipes in interior machine are in and freeze shape
State will guarantee each heat exchange branch pipe into frozen state to be judged in advance and be accurately controlled according to testing result
Can normally refrigerating operaton and frost-free or it freeze.
Preferably, the detection unit includes temperature temperature sensing package 7.Will test Unit selection is temperature temperature sensing package, this is inspection
The preferred kind and structure type of the detection unit of testing temperature.
It is further preferred that the first throttling device 4 and second throttling device 6 are electric expansion valve；The liquid separation portion
Part 3 is liquid-dividing head；The heat exchanger 1 is indoor set heat exchanger.
As shown in Figure 1, it is further preferred that the heat exchanger 1 include two heat exchange branch pipes, including first heat exchange branch pipe with
Second heat exchange branch pipe, the first heat exchange branch pipe are connected to one end of the liquid separation component 3, described second by the first branch line
Heat exchange branch pipe is connected to one end of the liquid separation component 3 by second branched pipe road, and is provided on first branch line
The first throttling device 4.
The present invention also provides a kind of control methods of air-conditioning anti-freeze, are filled using the control of air-conditioning anti-freeze above-mentioned
It sets, the heat exchanger of air-conditioning is freezed to carry out defense controls comprising:
Judgment step, judges whether at least one of more than two heat exchange branch pipes 11 reach the item of anti-freeze protection
Part；
Regulating step adjusts the flow for reaching the heat exchange branch pipe of anti-freeze protective condition so that it is unsatisfactory for anti-freeze protection
Condition.
The control method of air-conditioning anti-freeze through the invention, by the more than two heat exchange branch pipes for being directed to sweat cooling
(i.e. evaporator) is controlled, and is judged whether wherein at least one heat exchange branch pipe reaches anti-freeze protective condition and adjust and is changed
Hot leg pipe flow is controlled to effectively achieve cold medium flux in exchange hot leg pipe, heat exchanger is enabled to be prevented
Can also normally it be freezed when freeze protection, to will not influence indoor level of comfort.
Preferably, when adjusting unit includes first throttling device, and when the heat exchange branch pipe being attached thereto reaches anti-freeze
When the condition of protection, first throttling device is adjusted, the cold medium flux flowed through in the heat exchange branch pipe reduces.Pass through above adjusting
Mode can be effectively reduced by first throttling device flow through this reach anti-freeze protection heat exchange branch pipe in flow, thus right
It carries out anti-freeze protection, while also can be carried out normal refrigeration, realizes and accurately, is targetedly controlled.
Preferably, when adjusting unit further includes second throttling device, second throttling device is adjusted, the heat exchange branch is flowed through
Pipe neutralizes the cold medium flux flowed through in main refrigerant pipeline and reduces.It can be to flowing through each branched pipe by above regulative mode
The main refrigerant pipeline of heat exchange branch pipe in road carries out throttling control, to control total cold medium flux, so as to effectively
Prevent the feelings that all the way or refrigerant reduces, the cold medium flux in another way or a few road branch lines but increases in a few road branch lines
Condition effectively avoids the occurrence of that adjustment process will lead to other heat exchange branch pipes and freeze frosting.
Preferably, further include detecting step, detect the temperature of at least one of more than two described heat exchange branch pipes, and
It will test result and be transmitted to the judgment step.Through setting detecting step in a manner of detecting heat exchange branch pipe temperature, Neng Gouyou
Effect and accurately judge whether some or multiple heat exchange branch pipes in interior machine are in frozen state or will be into freezing shape
State guarantees that each heat exchange branch pipe can normally freeze fortune to be judged in advance and be accurately controlled according to testing result
Row and frost-free freeze.
Preferably, when the heat exchange branch pipe temperature detected is lower than preset temperature, judge that it meets and enter anti-freeze control
Condition, then the aperture for adjusting first throttling device makes its reduction.This is the specific preferred control of control method of the invention
Step, (performance of the preset temperature according to heat exchange branch pipe, indoor and outdoor surroundings when detecting heat exchange branch pipe temperature lower than preset temperature
The parameters such as temperature and set, under usual terms when be lower than preset temperature when, start defrost), judge its meet enter it is antifreeze
The condition for tying control, the aperture by adjusting first throttling device make its reduction, can effectively reduce through the heat exchange branch pipe
In refrigerant flow, further reduced the probability and possibility of frosting, and also ensure that it can normally freeze.
Preferably, when adjusting unit further includes second throttling device, while first throttling device and the second throttling being adjusted
The aperture of device reduces, to reduce the cold medium flux flowed through in heat exchange branch pipe.This is the further of control method of the invention
Preferred rate-determining steps judge it when further including second throttling device and detecting heat exchange branch pipe temperature lower than preset temperature
Meet the condition for entering anti-freeze control, the aperture by adjusting first throttling device makes its reduction, can effectively reduce logical
The flow of the refrigerant in the heat exchange branch pipe is crossed, but is likely to affect the cold medium flux of other pipelines, may result in stream
Cold medium flux into other branches and increase, therefore in order to reduce a possibility that this case occurs, the present invention is adjusted
The aperture of first throttling device and second throttling device reduces, then can effectively reduce and flow through the heat exchange branch pipe for needing anti-freeze
Cold medium flux, simultaneously guarantee that the cold medium flux of the heat exchange branch pipe in other branches is unlikely to increase, effectively avoid adjustment process
It will lead to the occurrence of other heat exchange branch pipes freeze frosting.
The present invention also provides a kind of air-conditionings comprising the control device of air-conditioning anti-freeze above-mentioned.Sky through the invention
It adjusts, using the control device of air-conditioning anti-freeze above-mentioned, for more than two heat exchange branch pipes (i.e. evaporator) of sweat cooling
It is controlled, judges whether at least one heat exchange branch pipe reaches anti-freeze protective condition and adjust heat exchange branch pipe flow, thus
It effectively achieves cold medium flux in exchange hot leg pipe to be controlled, enables to heat exchanger can also when carrying out anti-freeze protection
Normally freezed, to will not influence indoor level of comfort.
The working principle of the invention and preferred embodiment is described below
The present invention preferably, is filled by installing throttling additional before and after the liquid separation component 3 (preferably liquid-dividing head) that heat exchanger 1 is connected
The control for realizing heat exchanging device branch refrigerant flow is set, so that reaching unit while interior machine prevents frosting also can normally make
It is cold.
Due to using interior machine anti-freeze control method of the invention, after entering anti-freeze, unit will not exit unit
Refrigeration mode, unit can normally freeze, and avoid the problem of unit does not freeze during entering anti-freeze, greatly improve use
Family comforts of use.
Specific embodiment is as follows:
1, equipment: electronic expansion can be used in the throttling set of a complete indoor unit, two same models, throttling set
Valve.
2, as shown in Figure 1, installing throttling set additional before and after liquid-dividing head respectively.For to be arranged in after how determining liquid-dividing head
Which branch, this just needs to confirm when matching test early period which is easiest to enter frosting state.
3, when the pipeline temperature sensing package on heat exchanger detects that line temperature reaches setting value, mainboard receives information, and opens
Beginning makes electronic expansion valve events.In order to solve the problems, such as frosting pipeline, the refrigerant of the pipeline can be suitably reduced, it is possible to make
Throttling set after liquid-dividing head is beaten small.If liquid-dividing head comes in view of the restriction effect for only increasing a certain pipeline after liquid-dividing head
Total flow it is constant, then being easy for causing the coolant quantity of other pipelines to increase, influence whether the frosting feelings of other pipelines in this way
Condition.So in order to guarantee that other branch coolant quantities remain unchanged when reducing wherein certain cold medium flux all the way, it is necessary to
Also a throttling set is installed before liquid-dividing head additional, and when the two throttling sets movement of installation, the throttling played
Effect is same.When the temperature that heat exchange manifold temperature sensing package detects reaches disengaging value, mainboard receives information, and makes installation
The two throttling sets restPose.When line temperature reaches again into anti-freeze condition, then recycle according to this.
So machine anti-freeze in controlling in this manner, unit equally can normally freeze, comfort level is improved.
The control method that the control method can substitute interior machine anti-freeze common currently on the market but unit does not freeze.
Those skilled in the art will readily recognize that above-mentioned each advantageous manner can be free under the premise of not conflicting
Ground combination, superposition.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.With
It is only the preferred embodiment of the present invention described in upper, it is noted that for those skilled in the art, not
Under the premise of being detached from the technology of the present invention principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as this
The protection scope of invention.
Claims (11)
1. a kind of control device of air-conditioning anti-freeze, it is characterised in that:
Including the heat exchanger (1) for being evaporated refrigeration comprising more than two heat exchange branch pipes (11),
Further include:
Judging unit, for judging whether at least one of more than two heat exchange branch pipe (11) reach the item of anti-freeze protection
Part；
Unit is adjusted, reaches the flow of the heat exchange branch pipe of anti-freeze protective condition so that it is unsatisfactory for anti-freeze protection for adjusting
Condition；
It further include detection unit, for detecting the temperature of at least one of more than two described heat exchange branch pipe (11), and will
Testing result is transmitted to the judging unit；When the heat exchange branch pipe temperature detected be lower than preset temperature when, judge its meet into
Enter the condition of anti-freeze control, then the aperture for adjusting first throttling device makes its reduction；The adjusting unit further includes that setting exists
Second throttling device (6) on main refrigerant pipeline, while the aperture for adjusting first throttling device and second throttling device reduces,
To reduce the cold medium flux flowed through in heat exchange branch pipe.
2. control device according to claim 1, it is characterised in that: more than two heat exchange branch pipes (11) are led to respectively
Cross the one end converged with the branch line (2) being respectively connected and be connected to liquid separation component (3), the adjusting unit include setting to
First throttling device (4) on a few branch line (2).
3. control device according to claim 2, it is characterised in that: the other end connection master of the liquid separation component (3) is cold
Matchmaker's pipeline (5).
4. control device according to claim 3, it is characterised in that: the detection unit includes temperature temperature sensing package (7).
5. a kind of control method of air-conditioning anti-freeze, it is characterised in that: use air-conditioning anti-freeze described in one of claim 1-4
Control device, to the heat exchanger of air-conditioning freeze carry out defense controls comprising:
Judgment step, judges whether at least one of more than two heat exchange branch pipe (11) reach the condition of anti-freeze protection；
Regulating step adjusts the flow for reaching the heat exchange branch pipe of anti-freeze protective condition so that its item for being unsatisfactory for anti-freeze protection
Part.
6. control method according to claim 5, it is characterised in that: when adjusting unit includes first throttling device, and
When the heat exchange branch pipe being attached thereto reaches the condition of anti-freeze protection, first throttling device is adjusted, the heat exchange branch pipe is flowed through
In cold medium flux reduce.
7. control method according to claim 6, it is characterised in that: when adjusting unit further includes second throttling device,
Second throttling device is adjusted, the cold medium flux that heat exchange branch pipe neutralization flows through in main refrigerant pipeline is flowed through and reduces.
8. the control method according to one of claim 5-7, it is characterised in that: further include detecting step, detect two with
On at least one of the heat exchange branch pipe temperature, and will test result and be transmitted to the judgment step.
9. control method according to claim 8, it is characterised in that: when the heat exchange branch pipe temperature detected is lower than default temperature
When spending, judge that it meets the condition for entering anti-freeze control, then the aperture for adjusting first throttling device makes its reduction.
10. control method according to claim 9, it is characterised in that: when adjusting unit further includes second throttling device,
It adjusts first throttling device simultaneously and the aperture of second throttling device reduces, to reduce the refrigerant stream flowed through in heat exchange branch pipe
Amount.
11. a kind of air-conditioning, it is characterised in that: the control device including air-conditioning anti-freeze described in one of claim 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610631297.0A CN106196524B (en) | 2016-08-01 | 2016-08-01 | Control device and control method for preventing air conditioner from freezing and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610631297.0A CN106196524B (en) | 2016-08-01 | 2016-08-01 | Control device and control method for preventing air conditioner from freezing and air conditioner |
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| CN106196524A CN106196524A (en) | 2016-12-07 |
| CN106196524B true CN106196524B (en) | 2019-04-02 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844143A (en) * | 2018-07-20 | 2018-11-20 | 珠海格力电器股份有限公司 | Heat exchanger assembly, air conditioner and control method of air conditioner |
| CN109210699B (en) * | 2018-09-10 | 2020-11-27 | 青岛海尔空调器有限总公司 | Control method for anti-freezing protection of air conditioner |
| KR20210100461A (en) * | 2020-02-06 | 2021-08-17 | 엘지전자 주식회사 | Air conditioning apparatus |
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| CN103388881A (en) * | 2013-06-28 | 2013-11-13 | 广东美的电器股份有限公司 | Heat pump and air-conditioning system as well as control method thereof |
| CN104728999A (en) * | 2013-12-23 | 2015-06-24 | 珠海格力电器股份有限公司 | Anti-freezing control method and device for heat exchanger of air conditioner |
| CN104634032A (en) * | 2015-01-30 | 2015-05-20 | 广东美的制冷设备有限公司 | Defrosting speed adjusting method, defrosting speed adjusting device and air conditioner |
| CN104807229A (en) * | 2015-04-27 | 2015-07-29 | 广东美的暖通设备有限公司 | Multi-split air conditioner and control method thereof |
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