CN105570988B - Air conditioner and its control method - Google Patents
Air conditioner and its control method Download PDFInfo
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- CN105570988B CN105570988B CN201511034561.4A CN201511034561A CN105570988B CN 105570988 B CN105570988 B CN 105570988B CN 201511034561 A CN201511034561 A CN 201511034561A CN 105570988 B CN105570988 B CN 105570988B
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- heat exchanger
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- indoor heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/006—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing frost
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of air conditioner and its control methods, wherein, air conditioner includes: the compressor, outdoor heat exchanger and indoor heat exchanger for being sequentially connected with and being formed circulation, by the first piping connection between the outlet and outdoor heat exchanger of compressor, pass through the second piping connection between outdoor heat exchanger and indoor heat exchanger.Air conditioner further include: the first branch, the first end of the first branch are connected on the first pipeline, and the second end of the first branch is connected on the second pipeline；First valve, the first valve are arranged on the first leg；Second valve, the second valve are arranged on the first pipeline and are located between the first end and outdoor heat exchanger of the first branch.Technical solution of the present invention efficiently solves the problems, such as that air conditioner in the prior art indoor heat exchanger in worst cold case operation is easy frosting.
Description
Technical field
The present invention relates to the technical fields of air conditioner, in particular to a kind of air conditioner and its control method.
Background technique
In the prior art, air conditioner is in cold operation, when the inlet pipe temperature of indoor heat exchanger is less than or equal to certain temperature
When, the phenomenon that indoor heat exchanger will appear frosting.
Summary of the invention
The main purpose of the present invention is to provide a kind of air conditioner and its control methods, to solve air-conditioning in the prior art
Device worst cold case run when indoor heat exchanger be easy frosting the problem of.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of air conditioner, comprising: be sequentially connected with
And the compressor, outdoor heat exchanger and indoor heat exchanger of circulation are formed, by the between the outlet and outdoor heat exchanger of compressor
One piping connection passes through the second piping connection between outdoor heat exchanger and indoor heat exchanger；Air conditioner further include: the first branch,
The first end of the first branch is connected on the first pipeline, and the second end of the first branch is connected on the second pipeline；First valve, the
One valve is arranged on the first leg；Second valve, the second valve are arranged on the first pipeline and are located at the first of the first branch
Between end and outdoor heat exchanger.
Further, air conditioner further includes throttle part, second branch and pressure-regulating valve, and throttle part is arranged second
On pipeline and it is located between the second end and indoor heat exchanger of the first branch, the first end of second branch is connected to the first branch
Between first end and the first valve or between the second valve and compressor, the second end of second branch be connected to throttle part and
Between indoor heat exchanger, pressure-regulating valve is arranged in second branch.
Further, air conditioner further includes third valve, and the second of the first valve and the first branch is arranged in third valve
Between end, third valve is check valve, and the flow direction of third valve is second end of first valve to the first branch.
Further, the second valve is check valve, and the flow direction of the second valve is the first end of the first branch to outdoor heat exchange
Device.
Further, the first valve is solenoid valve.
Further, air conditioner further includes oil eliminator, and the first branch that is exported to of compressor is arranged in oil eliminator
Between first end, the oil that oil eliminator is isolated is back to the entrance of compressor.
Further, air conditioner further includes gas-liquid separator, and the outlet and pressure of heat exchanger indoors is arranged in gas-liquid separator
On pipeline between contracting machine entrance.
Further, outdoor heat exchanger is water cooling heat exchanger.
According to another aspect of the present invention, a kind of control method of air conditioner is provided, air conditioner is above-mentioned air conditioner,
The control method of air conditioner includes: the Current Temperatures for obtaining the indoor heat exchanger of air conditioner；According to the indoor heat exchanger of air conditioner
Current Temperatures, judge whether the first valve of air conditioner meets open condition；If the first valve meets the condition opened,
Open the first valve.
According to another aspect of the present invention, a kind of control method of air conditioner is provided, air conditioner is above-mentioned air conditioner,
The control method of air conditioner includes: the Current Temperatures for obtaining the indoor heat exchanger of air conditioner；According to the indoor heat exchanger of air conditioner
Current Temperatures, judge whether the first valve of air conditioner meets open condition；If the first valve meets the condition opened,
Open the first valve.
Further, according to the Current Temperatures of the indoor heat exchanger of air conditioner, judge whether the first valve of air conditioner is full
Sufficient opening condition includes: to judge that the first valve is full when the Current Temperatures of indoor heat exchanger are less than or equal to the first preset temperature
Foot opens condition, then opens the first valve；When the Current Temperatures of indoor heat exchanger are greater than the first preset temperature and are less than or equal to the
When two preset temperatures, then the Current Temperatures based on system high pressure side judge whether the first valve of air conditioner meets open item
Part；When the Current Temperatures of indoor heat exchanger are greater than the second preset temperature, judge that the first valve is unsatisfactory for opening condition, then the
One valve is closed.
Further, the Current Temperatures based on system high pressure side judge whether the first valve of air conditioner meets open item
Part includes: to judge that the first valve meets when the Current Temperatures of system high pressure side are less than or equal to third preset temperature and open item
Part then opens the first valve；When the Current Temperatures that third preset temperature is less than system high pressure side are less than or equal to the 4th preset temperature
When, the first valve maintains standing state；When the 4th preset temperature is less than system high pressure side, judge that the first valve is unsatisfactory for beating
Condition is opened, the first valve is closed.
Further, when the Current Temperatures of indoor heat exchanger are greater than the second preset temperature, and working as when system high pressure side
When preceding temperature is greater than the second preset temperature, the second valve is closed, and the pressure-regulating valve of air conditioner is opened.
It applies the technical scheme of the present invention, is additionally arranged the first branch, the first valve and the second valve.When air conditioner freezes
When, when the inlet temperature of indoor heat exchanger is lower than predetermined temperature, the first valve is opened, and the second valve is closed, the refrigerant of air conditioner
Heat exchange cooling is not carried out by outdoor heat exchanger, is increased by the refrigerant temperature of indoor heat exchanger, thus efficiently avoided
Air conditioner worst cold case run when indoor heat exchanger be easy frosting the problem of.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the structural schematic diagram of the embodiment of air conditioner according to the present invention.
Wherein, the above drawings include the following reference numerals:
10, compressor；20, outdoor heat exchanger；30, indoor heat exchanger；40, the first valve；50, the second valve；60, it throttles
Component；70, pressure-regulating valve；80, third valve；100, the first pipeline；200, the second pipeline；300, the first branch；400,
Two branches.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1, the air conditioner of the present embodiment includes: compressor 10, the outdoor heat exchange for being sequentially connected with and being formed circulation
Device 20 and indoor heat exchanger 30.It is connected between the outlet and outdoor heat exchanger 20 of compressor 10 by the first pipeline 100, outdoor is changed
It is connected between hot device 20 and indoor heat exchanger 30 by the second pipeline 200.Air conditioner further include: the first branch 300, the first valve
40 and second valve 50.The first end of the first branch 300 is connected on the first pipeline 100, and the second end of the first branch 300 connects
It connects on the second pipeline 200.First valve 40 is arranged in the first branch 300.Second valve 50 is arranged on the first pipeline 100
And it is located between the first end and outdoor heat exchanger 20 of the first branch 300.Wherein, the first branch 300 is high pressure bypass branch, the
Two branches 400 are high voltage protective branch.
Using the technical solution of the present embodiment, it is additionally arranged the first branch, the first valve and the second valve.When air conditioner system
When cold, when the inlet temperature of indoor heat exchanger 30 is lower than the first preset temperature, the first valve 40 is opened, and the second valve 50 is closed,
The refrigerant of air conditioner does not pass through outdoor heat exchanger 20 and carries out heat exchange cooling, is increased by the refrigerant temperature of indoor heat exchanger 30, this
Sample just efficiently avoid air conditioner worst cold case operation when indoor heat exchanger 30 be easy frosting the problem of.
As shown in Figure 1, in the technical scheme of this embodiment, air conditioner further includes throttle part 60,400 and of second branch
The second end on the second pipeline 200 and being located at the first branch 300 and indoor heat exchange is arranged in pressure-regulating valve 70, throttle part 60
Between device 30, the first end of second branch 400 is connected between the first end of the first branch 300 and the first valve 40.Certainly, make
For one skilled in the art will appreciate that the first end of second branch 400 is arranged between the second valve 50 and compressor 10 and can
With.The second end of second branch 400 is connected between throttle part 60 and indoor heat exchanger 30, and the setting of pressure-regulating valve 70 exists
In second branch 400.When the temperature of 30 entrance of indoor heat exchanger is greater than the second preset temperature, (system pressure is excessively high) is pressed
Force regulating valve, which is opened, carries out pressure release, while the power of compressor 10 increases the safe operation to guarantee air conditioner.
As shown in Figure 1, in the technical scheme of this embodiment, air conditioner further includes third valve 80, third valve 80 is set
It sets between the first valve 40 and the second end of the first branch 300, third valve 80 is check valve, and the flow direction of third valve 80 is
First valve 40 to the first branch 300 second end.When the refrigerant of air conditioner passes through outdoor heat exchanger 20, third valve 80 is certainly
Dynamic cut-off, above structure setting is simple, reduces the control component of automatic circuit, enhances the automatic control function of air conditioner
Energy.
As shown in Figure 1, in the technical scheme of this embodiment, the second valve 50 is check valve, the flow direction of the second valve 50
For the first branch 300 first end to outdoor heat exchanger 20.When the refrigerant of air conditioner passes through second branch 400, the second valve
50 automatic cut-offs, above structure setting is simple, reduces the control component of automatic circuit, enhances the automatic control of air conditioner
Function.Further, the first valve 40 is solenoid valve, and above structure realizes the first valve by pressure sensor, temperature-sensitive control
The open and close of door 40, above structure enhance the automatic control function of air conditioner.Further, outdoor heat exchanger 20 changes for water cooling
Hot device, water cooling heat exchanger are applied to the flow for efficiently avoiding often switching the cooling water of water cooling heat exchanger in the present embodiment.
As shown in Figure 1, in the technical scheme of this embodiment, air conditioner further includes oil eliminator, oil eliminator setting exists
Compressor 10 is exported between the first end of the first branch 300, and the oil that oil eliminator is isolated is back to entering for compressor 10
Mouthful.Gs-oil separator is provided with the clarity for being conducive to keep refrigerant.Specifically, the lubricating oil reflux that oil eliminator is separated
To the entrance of compressor 10, above structure ensure that the lubrication of compressor 10, not need to fill into lubrication again to compressor 10 again
Oil saves lubricating oil.
As shown in Figure 1, in the technical scheme of this embodiment, air conditioner further includes gas-liquid separator, gas-liquid separator is set
It sets on the pipeline between 10 entrance of outlet and compressor of indoor heat exchanger 30.It is come out from the outlet of indoor heat exchanger 30 cold
Matchmaker carries out the gas-liquid separation of refrigerant by gas-liquid separator, and the liquid hammer that the setting of above structure efficiently avoids compressor 10 is existing
The generation of elephant.
Present invention also provides a kind of control method of air conditioner, air conditioner is above-mentioned air conditioner, the control of air conditioner
Method includes: the Current Temperatures for obtaining the indoor heat exchanger 30 of air conditioner.
According to the Current Temperatures of the indoor heat exchanger 30 of air conditioner, judge whether the first valve 40 of air conditioner meets opening
Condition.If the first valve 40 meets the condition opened, the first valve 40 is opened.
In the technical scheme of this embodiment, according to the Current Temperatures of the indoor heat exchanger of air conditioner 30, judge air conditioner
The first valve 40 whether meet opening condition and include:
One, when the Current Temperatures of indoor heat exchanger 30 are less than or equal to the first preset temperature, judge that the first valve 40 is full
Foot opens condition, then opens the first valve 40.When compressor low-frequency operation, the first valve 40 is opened, and the first branch 300 is connected to,
System high pressure increases, and low pressure increases, and indoor heat exchanger 30 is not easy frosting, will not frequently occur anti-freeze protection, and avoid
The appearance of low-voltage variation.
Two, when the Current Temperatures of indoor heat exchanger 30 are greater than the first preset temperature and are less than or equal to the second preset temperature,
(Current Temperatures of system high pressure side refer to that compressor 10 is vented to outdoor heat exchanger 20 to Current Temperatures then based on system high pressure side
Between pipeline the corresponding saturation temperature of pressure) judge whether the first valve 40 of air conditioner meets open condition, be divided into
Three kinds of situations, specific as follows:
1, when the Current Temperatures of system high pressure side are less than or equal to third preset temperature, judge that the first valve 40 satisfaction is beaten
Condition is opened, then opens the first valve 40, the first branch 300 is connected to.
2, when the Current Temperatures that third preset temperature is less than system high pressure side are less than or equal to four preset temperatures, the first valve
Door 40 maintains standing state, and the first branch 300 maintains standing state.
3, when the 4th preset temperature is less than system high pressure side, the first valve 40 is closed, and the first branch 300 disconnects.
Three, when the Current Temperatures of indoor heat exchanger 30 are greater than the second preset temperature, judge that the first valve 40 is unsatisfactory for
Opening condition, then the first valve 40 is closed, and the first branch 300 disconnects, and compressor output at this time is big.
Preferably, when system high pressure is greater than the second preset temperature, the second valve 50 is closed, and pressure-regulating valve 70 is opened,
Second branch 400 is connected to, and plays the role of release, protects compressor reliability service.
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, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (12)
1. a kind of air conditioner, comprising:
It is sequentially connected with and is formed the compressor (10), outdoor heat exchanger (20) and indoor heat exchanger (30) of circulation, the compressor
(10) connected between outlet and the outdoor heat exchanger (20) by the first pipeline (100), the outdoor heat exchanger (20) and
It is connected between the indoor heat exchanger (30) by the second pipeline (200)；
It is characterized in that, the air conditioner further include:
The first branch (300), the first end of the first branch (300) are connected on first pipeline (100), and described first
The second end of branch (300) is connected on second pipeline (200)；
First valve (40), first valve (40) are arranged on the first branch (300)；
Second valve (50), second valve (50) are arranged on first pipeline (100) and are located at the first branch
(300) between first end and the outdoor heat exchanger (20)；
The air conditioner further includes throttle part (60), second branch (400) and pressure-regulating valve (70), the throttle part
(60) second end and the indoor heat exchanger of the setting on second pipeline (200) and positioned at the first branch (300)
(30) between, the first end of the second branch (400) be connected to the first branch (300) first end and first valve
Between door (40) or between second valve (50) and the compressor (10), the second end of the second branch (400)
It is connected between the throttle part (60) and the indoor heat exchanger (30), the pressure-regulating valve (70) setting is described the
On two branches (400).
2. air conditioner according to claim 1, which is characterized in that the air conditioner further includes third valve (80), described
Third valve (80) is arranged between first valve (40) and the second end of the first branch (300), the third valve
Door (80) is check valve, and the flow direction of the third valve (80) is first valve (40) extremely the first branch (300)
Second end.
3. air conditioner according to claim 1, which is characterized in that second valve (50) be check valve, described second
The flow direction of valve (50) is the first end of the first branch (300) to the outdoor heat exchanger (20).
4. air conditioner according to claim 1, which is characterized in that first valve (40) is solenoid valve.
5. air conditioner according to any one of claim 1 to 4, which is characterized in that the air conditioner further includes oily separation
Device, being exported between the first end of the first branch (300) in the compressor (10) is arranged in the oil eliminator, described
The oil that oil eliminator is isolated is back to the entrance of the compressor.
6. air conditioner according to any one of claim 1 to 4, which is characterized in that the air conditioner further includes gas-liquid point
From device, pipe of the gas-liquid separator setting between the outlet and the compressor (10) entrance of the indoor heat exchanger (30)
On the road.
7. air conditioner according to any one of claim 1 to 4, which is characterized in that the outdoor heat exchanger (20) is water
Cold heat exchanger.
8. a kind of control method of air conditioner, which is characterized in that the air conditioner is air conditioner described in claim 1, described
The control method of air conditioner includes:
Obtain the Current Temperatures of the indoor heat exchanger (30) of air conditioner；
According to the Current Temperatures of the indoor heat exchanger (30) of the air conditioner, judge the air conditioner the first valve (40) whether
Meet the condition opened；
If first valve (40) meets the condition of the opening, first valve (40) is opened.
9. a kind of control method of air conditioner, which is characterized in that the air conditioner is described in any one of claims 1 to 7
The control method of air conditioner, the air conditioner includes:
Obtain the Current Temperatures of the indoor heat exchanger (30) of air conditioner；
According to the Current Temperatures of the indoor heat exchanger (30) of the air conditioner, judge the air conditioner the first valve (40) whether
Meet the condition opened；
If first valve (40) meets the condition of the opening, first valve (40) is opened.
10. control method according to claim 9, which is characterized in that according to the indoor heat exchanger (30) of the air conditioner
Current Temperatures, judge whether first valve (40) of the air conditioner meets opening condition and include:
When the Current Temperatures of the indoor heat exchanger (30) are less than or equal to the first preset temperature, first valve is judged
(40) meet the opening condition, then open first valve (40)；
When the Current Temperatures of the indoor heat exchanger (30) are greater than the first preset temperature and are less than or equal to the second preset temperature, then
Current Temperatures based on system high pressure side judge whether the first valve (40) of the air conditioner meets the condition of the opening；
When the Current Temperatures of the indoor heat exchanger (30) are greater than second preset temperature, first valve is judged
(40) it is unsatisfactory for the opening condition, then first valve (40) is closed.
11. control method according to claim 10, which is characterized in that the Current Temperatures based on the system high pressure side are sentenced
Whether the first valve (40) of the air conditioner of breaking meets the condition of the opening and includes:
When the Current Temperatures of the system high pressure side are less than or equal to third preset temperature, judge that first valve (40) is full
The foot opening condition, then open first valve (40)；
It is described when the Current Temperatures that the third preset temperature is less than the system high pressure side are less than or equal to four preset temperatures
First valve (40) maintains standing state；
When the 4th preset temperature is less than the system high pressure side, judge that first valve (40) is unsatisfactory for described beat
Condition is opened, first valve (40) is closed.
12. control method according to claim 10, which is characterized in that when the Current Temperatures of the indoor heat exchanger (30)
When greater than second preset temperature, and when the Current Temperatures of the system high pressure side are greater than second preset temperature, institute
The second valve (50) closing is stated, the pressure-regulating valve (70) of the air conditioner is opened.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511034561.4A CN105570988B (en) | 2015-12-31 | 2015-12-31 | Air conditioner and its control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511034561.4A CN105570988B (en) | 2015-12-31 | 2015-12-31 | Air conditioner and its control method |
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| CN105570988A CN105570988A (en) | 2016-05-11 |
| CN105570988B true CN105570988B (en) | 2018-12-11 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106482378A (en) * | 2016-10-19 | 2017-03-08 | 广东美的制冷设备有限公司 | Air conditioning system and its control method |
| CN107166643A (en) * | 2017-05-17 | 2017-09-15 | 青岛海尔空调器有限总公司 | A kind of control method and device of air-conditioning |
| CN110793159B (en) * | 2019-11-19 | 2021-10-26 | 宁波奥克斯电气股份有限公司 | Air conditioner refrigeration anti-freezing protection control method and device and air conditioner |
| CN111306852A (en) * | 2020-02-26 | 2020-06-19 | 珠海格力电器股份有限公司 | Air conditioning system for preventing heat exchanger from frosting and control method thereof |
| CN111442503B (en) * | 2020-04-09 | 2021-09-17 | 宁波奥克斯电气股份有限公司 | Control method and device for outdoor fan of air conditioner and air conditioner |
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| CN202630535U (en) * | 2012-06-07 | 2012-12-26 | 珠海格力电器股份有限公司 | Pressure-regulating valve assembly and water source multi-connected machine air conditioner provided with same |
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| CN205619430U (en) * | 2015-12-31 | 2016-10-05 | 珠海格力电器股份有限公司 | Air -conditioner |
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| CN105570988A (en) | 2016-05-11 |
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