CN107940876A - The control method of air conditioner and air conditioner - Google Patents
The control method of air conditioner and air conditioner Download PDFInfo
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- CN107940876A CN107940876A CN201711069292.4A CN201711069292A CN107940876A CN 107940876 A CN107940876 A CN 107940876A CN 201711069292 A CN201711069292 A CN 201711069292A CN 107940876 A CN107940876 A CN 107940876A
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- air conditioner
- pipeline
- refrigerant
- valve body
- throttling device
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Classifications
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
-
- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The embodiment provides a kind of air conditioner, air conditioner includes：First pipeline, the both ends of the both ends of the first pipeline respectively with the first throttling device of air conditioner are connected, so that the refrigerant in air conditioner enters the outdoor heat exchanger of air conditioner by the first pipeline；Second pipeline, is arranged in parallel between the four-way valve first exit end of air conditioner and the gas-liquid separator of air conditioner, second throttling device is provided with the second pipeline.In defrosting, condensation is directly fed directly in outdoor heat exchanger by the first pipeline by indoor heat exchanger, and the refrigerant being flowed into outdoor heat exchanger is the high temperature and pressure refrigerant being depressured without throttling arrangement, it can realize and be defrosted using the self-contained heat of refrigerant to outdoor heat exchanger, and the running route of refrigerant will not be allowed to produce change and cause indoor heating to temporarily cease, it ensure that normal use of the user to air conditioner.
Description
Technical field
The present invention relates to art of refrigeration units, more specifically, is related to a kind of control method of air conditioner and air conditioner.
Background technology
When heating operation, refrigerant absorbs heat evaporation air-conditioning system in outer machine heat exchanger, in certain outdoor temperature
Under damp condition, the vapor in air can be condensed in gradually on the tube wall and fin of outer machine heat exchanger, roll up frost layer, drop
The coefficient of heat transfer of low outer machine heat exchanger, so as to reduce the heating effect of system.Therefore external machine heat exchanger is needed to defrost.Mesh
Preceding Defrost mode is the flow path for changing refrigerant, the refrigerant of high temperature and pressure is flowed through outer machine heat exchanger exothermic condensation, then flows through
Indoor unit heat absorption evaporation returns to compressor, and being circulated with this eliminates the frost layer on outer machine condenser.This Defrost mode needs to stop
The only heating of a period of time, adverse effect is brought to user.In addition, during refrigerant flow is changed, the high-pressure side of system
Switch rapidly in a short time with low pressure survey, gas phase zone and liquid phase region, larger impact is caused to system, be easy to cause device
Damage, adds the operation risk of air-conditioning system.
The content of the invention
It is contemplated that at least solve one of technical problem existing in the prior art.
For this reason, one aspect of the present invention provides a kind of air conditioner.
One aspect of the present invention provides a kind of control method of air conditioner.
In view of it is above-mentioned, a kind of air conditioner is provided according to an embodiment of the invention, and air conditioner includes：First pipeline, first
Both ends of the both ends of pipeline respectively with the first throttling device of air conditioner are connected, so that the refrigerant in air conditioner passes through the first pipe
Road enters the outdoor heat exchanger of air conditioner；Second pipeline, is arranged in parallel four-way valve first exit end and air conditioner in air conditioner
Gas-liquid separator between, be provided with second throttling device on the second pipeline.
Include the first pipeline and the second pipeline the present invention provides a kind of air conditioner, the both ends of the first pipeline respectively with air-conditioning
The both ends of the first throttling device of device are connected so that when needing defrosting, original refrigerant is flowing through indoor heat exchanger and outdoor
First throttling device between heat exchanger when, refrigerant can be selected without first throttling device but directly by the first pipe
Route indoor heat exchanger is fed directly in outdoor heat exchanger, and the refrigerant being flowed into outdoor heat exchanger is to be filled without throttling
Put the high temperature and pressure refrigerant of decompression, it is possible to achieve defrosted using the self-contained heat of refrigerant to outdoor heat exchanger, and not
The running route of refrigerant can be allowed to produce change and cause indoor heating to temporarily cease, ensure that user makes the normal of air conditioner
With.
It is meanwhile in parallel on the pipeline that is connected with the gas-liquid separator of air conditioner of four-way valve first exit end of air conditioner
Second pipeline, is provided with second throttling device in the second management, enters outdoor around first throttling device in refrigerant and change
After heat release defrosting being carried out in condenser in hot device so that refrigerant at this time have passed through the condenser of indoor heat exchanger and outdoor
Liquid is condensed into after the condensing twice of the condenser of heat exchanger, can be due to if refrigerant is returned directly in compressor at this time
Liquid hammer and the damage for causing compressor, even if the risk that compressor returns liquid can not be being reduced completely using gas-liquid separator, also
It can cause the reduction of the refrigerant circulation in system, greatly weaken heating and defrosting effect, therefore set on the second pipeline
There is second throttling device so that the refrigerant of liquid is becoming two state refrigerants of low temperature after second throttling device, i.e., in liquid
When refrigerant passes through second throttling device, can due to low-temp low-pressure is changed into from high temperature and pressure and cause form from liquid be changed into gaseous state and
Two state refrigerants of liquid mixing, at this time two state refrigerants most of liquid refrigerants can be divided by gas-liquid separator again
From reducing liquid coolant and enter directly into situation in compressor, and can also ensure the gaseous coolant energy for having sufficient amount
Come back in compressor, avoid the reduction of refrigerant circulation, ensure that the normal service life of compression, it is possible to achieve without
The continuously heating and defrosting of refrigerant flow conversion, increases the comfort and reliability of air-conditioning system.
In addition, the air conditioner that above-described embodiment provides according to the present invention also has following additional technical feature：
In any of the above-described technical solution, it is preferable that air conditioner further includes：First valve body, the first valve body are arranged on first
On pipeline.
In the technical scheme, the first valve body is additionally provided with the first pipeline, the first valve body normally freezes in air conditioner
Or be turned off when normally heating, and opened when air conditioner enters defrosting mode, this ensure that air conditioner is in non-defrosting mould
During formula, refrigerant can be throttled by first throttling device so that in defrosting mode and non-defrosting mode, refrigerant will not be sent out
The situation of raw flow path mistake, ensure that the normal operation of air conditioner.
In any of the above-described technical solution, it is preferable that the second valve body, the second valve body be arranged on four-way valve first exit end with
Between the gas-liquid separator of air conditioner, and the second valve body is arranged in parallel with second throttling device.
In the technical scheme, the second valve body be arranged on four-way valve first exit end and air conditioner gas-liquid separator it
Between be provided with the second valve body, with second throttle to be arranged in parallel, the pipeline where the second valve body exists the second valve body for air conditioner
When non-defrosting mode, the pipeline of refrigerant operation, the second valve body is set on the pipeline, is ensured for refrigeration mode and heating mode
Air conditioner is refrigeration mode or heating mode when non-defrosting mode, which is opening, refrigerant by the pipeline into
Enter into gas-liquid separator, and in defrosting mode, the second valve body is closed, and refrigerant must be to first pass through second throttling device entrance
Into separator of getting up in the night to urinate so that in defrosting mode and non-defrosting mode, refrigerant will not ensure that there is a situation where flow path mistake
The normal operation of air conditioner.
In any of the above-described technical solution, it is preferable that air conditioner further includes：3rd pipeline, one end and four of the 3rd pipeline
The arrival end of port valve is connected, and the other end of the 3rd pipeline is connected with gas-liquid separator.
In the technical scheme, air conditioner further includes the 3rd pipeline, one end of the 3rd pipeline and the arrival end phase of four-way valve
Connection, the other end of the 3rd pipeline are connected with gas-liquid separator so that in defrosting mode, the refrigerant of a part of high pressure-temperature
Do not enter and indoor heat exchanger and outdoor heat exchanger are flowed in four-way valve, but is flowed directly into by the refrigerant exit end of compressor
The end of two pipelines so that the refrigerant that the port of export of the two state refrigerants flowed out at the second pipeline and compressor flows out mutually converges
Close, the refrigerant of the port of export outflow of compressor heats the refrigerant of two states so that the refrigerant of two states is heated into saturation
Steam or superheated steam, then returned to by gas-liquid separator in compressor, the refrigerant for ensureing to return to compressor is in saturation or mistake
Warm status, ensure that the operating status of compressor.
In any of the above-described technical solution, it is preferable that air conditioner further includes：3rd valve body, the 3rd valve body are arranged on the 3rd
On pipeline.
In the technical scheme, air conditioner further includes the 3rd valve body, and the 3rd valve body is arranged on the 3rd pipeline, the 3rd valve
Body is turned off when air conditioner normally freezes or normally heats, and is opened when air conditioner enters defrosting mode, is so ensured
In non-defrosting mode, refrigerant can be entered in indoor heat exchanger and outdoor heat exchanger and be changed air conditioner by four-way valve
Heat, ensure that refrigerant circulation abundance, and then ensure that the normal operation of air conditioner.
In any of the above-described technical solution, it is preferable that the first valve body, the second valve body and the 3rd valve body are solenoid valve；And/or
First throttling device and second throttling device are electric expansion valve or capillary.
In the technical scheme, by the first valve body, the second valve body or the 3rd valve body to be arranged to solenoid valve, can play pair
Refrigerant flow direction opening and closing control, it is contemplated that, by the first valve body, the second valve body or the 3rd valve body be arranged to other allow or
The valve body of cut-out refrigerant circulation can also realize technical scheme, and first throttling device and second throttling device are electronics
Expansion valve or capillary, can play the role of throttling, it is contemplated that, first throttling device and second throttling device are set
Technical scheme can be also realized for other throttling arrangements.
It is contemplated that, when setting the first valve body and the first section device in parallel, parallel way can be arranged to
The form of four-way valve, is that the flow path of refrigerant is controlled in normal mode (heating mode or refrigeration mode) or defrosting mode
System；When setting the second valve body in parallel and second throttling device, parallel way can be arranged to the form of four-way valve, be
The flow path of refrigerant is controlled in normal mode (heating mode or refrigeration mode) or defrosting mode.
A kind of control method of air conditioner is provided according to the second aspect of the invention, for such as any of the above-described technical solution
Air conditioner, therefore, the embodiment of the present invention provide air conditioner control method have first aspect any embodiment carry
Whole beneficial effects of the air conditioner of confession, it is numerous to list herein.
In any of the above-described technical solution, it is preferable that the control method of air conditioner includes：Received out in heating mode
Begin after defrosting instruction, close the first throttling device between the indoor heat exchanger of air conditioner and outdoor heat exchanger so that refrigerant leads to
Cross the outdoor heat exchanger that first pipeline in parallel with first throttling device enters air conditioner；The four-way valve first for opening air conditioner goes out
Second throttling device between mouth end and the gas-liquid separator of air conditioner.
In the technical scheme, received in heating mode after starting defrosting instruction, close the indoor heat exchange of air conditioner
First throttling device between device and outdoor heat exchanger so that refrigerant is entered by the first pipeline in parallel with first throttling device
The outdoor heat exchanger of air conditioner, opens second between the four-way valve first exit end of air conditioner and the gas-liquid separator of air conditioner
Throttling arrangement make it that when needing defrosting original refrigerant is flowing through the dress of the first throttle between indoor heat exchanger and outdoor heat exchanger
Put when, refrigerant can be selected without first throttling device but directly flowed directly into by the first pipeline by indoor heat exchanger
Into outdoor heat exchanger, and the refrigerant being flowed into outdoor heat exchanger is the high temperature and pressure refrigerant being depressured without throttling arrangement,
It can realize and be defrosted using the self-contained heat of refrigerant to outdoor heat exchanger, and the running route of refrigerant will not be allowed to produce
Change and cause indoor heating to temporarily cease, ensure that normal use of the user to air conditioner；Meanwhile in the four-way valve of air conditioner
Second pipeline in parallel on the pipeline that first exit end is connected with the gas-liquid separator of air conditioner, is provided with the in the second management
Two throttling arrangements, progress heat release defrosting in the condenser in outdoor heat exchanger is entered around first throttling device in refrigerant
Afterwards so that refrigerant at this time is cold after the condensation twice of the condenser and the condenser of outdoor heat exchanger that have passed through indoor heat exchanger
Liquid is congealed into, if refrigerant is returned directly in compressor at this time, the damage of compressor can be caused due to liquid hammer, even if
The risk of compressor time liquid can not be reduced completely using gas-liquid separator, also result in subtracting for the refrigerant circulation in system
It is few, greatly weaken heating and defrosting effect, therefore second throttling device is provided with the second pipeline so that the refrigerant of liquid
Becoming two state refrigerants of low temperature after second throttling device, i.e., can be due to when liquid refrigerants passes through second throttling device
From high temperature and pressure be changed into low-temp low-pressure and cause form from liquid be changed into gaseous state and liquid mixing two state refrigerants, two at this time
State refrigerant again can be separated most of liquid refrigerants by gas-liquid separator, reduced liquid coolant and entered directly into pressure
Situation in contracting machine, and can also ensure to have the gaseous coolant of sufficient amount can come back in compressor, avoid refrigerant and follow
The reduction of circular rector, ensure that the normal service life of compression, it is possible to achieve the continuously heating and defrosting changed without refrigerant flow,
Increase the comfort and reliability of air-conditioning system.
In any of the above-described technical solution, it is preferable that opening the four-way valve first exit end and air conditioner of air conditioner
Further included after the step of second throttling device between gas-liquid separator：Open four-way valve arrival end and gas-liquid separator it
Between the 3rd valve body.
In the technical scheme, the 3rd valve body between the arrival end of four-way valve and gas-liquid separator, the 3rd valve body are opened
On the 3rd pipeline, one end of the 3rd pipeline is connected with the arrival end of four-way valve, the other end and the gas-liquid point of the 3rd pipeline
It is connected from device so that in defrosting mode, the refrigerant of a part of high pressure-temperature does not enter the indoor heat exchange of flow direction in four-way valve
Device and outdoor heat exchanger, but the end of the second pipeline is flowed directly into by the refrigerant exit end of compressor so that from the second pipeline
The refrigerant that the port of export of the two state refrigerants and compressor of locating outflow flows out mutually converges, the refrigerant pair of the port of export outflow of compressor
The refrigerant of two states is heated so that and the refrigerant of two states is heated into saturated vapor or superheated steam, then by gas-liquid separation
Device is returned in compressor, and the refrigerant for ensureing to return to compressor is in saturation or superheat state, ensure that the operating status of compressor.
In any of the above-described technical solution, it is preferable that opening the four-way valve first exit end and air conditioner of air conditioner
Further included after the step of second throttling device between gas-liquid separator：Close second valve in parallel with second throttling device
Body.
In the technical scheme, between the four-way valve first exit end and the gas-liquid separator of air conditioner for opening air conditioner
Second throttling device the step of after, second valve body in parallel with second throttling device will be closed, the second valve body and second are saved
For stream valve to be arranged in parallel, the pipeline where the second valve body is air conditioner when refrigeration mode and heating mode are when non-defrosting mode,
The pipeline of refrigerant operation, sets the second valve body on the pipeline, ensures to remove for refrigeration mode or heating mode etc. are non-in air conditioner
During white pattern, which is opening, and refrigerant is entered in gas-liquid separator by the pipeline, and in defrosting mode,
Second valve body is closed, and refrigerant must be to first pass through second throttling device to enter in separator of getting up in the night to urinate so that in defrosting mode and
Refrigerant will not ensure that the normal operation of air conditioner there is a situation where flow path mistake during non-defrosting mode.
In any of the above-described technical solution, it is preferable that after the completion of defrosting, close the first valve body on the first pipeline and the
Two throttling arrangements；Open first throttling device and the second valve body.
In the technical scheme, after the completion of defrosting, the first valve body and second throttling device on the first pipeline are closed；Open
First throttling device and the second valve body are opened, ensures that refrigerant passes through first throttling device and the second valve body, and is no longer flow through the first valve
Body and second throttling device, without carrying out defrosting heating to outdoor unit heat exchanger again.
In any of the above-described technical solution, it is preferable that also wrapped after the step of opening first throttling device and the second valve body
Include：Close the 3rd valve body.
In the technical scheme, further included after the step of opening first throttling device and the second valve body：Close the 3rd valve
Body, this ensure that air conditioner, in non-defrosting mode, refrigerant indoor heat exchanger can be entered by four-way valve and outdoor is changed
Exchange heat in hot device, ensure that refrigerant circulation abundance, and then ensure that the normal operation of air conditioner.
Additional aspect and advantage according to the present invention will provide in following description section, partly by from following description
In become obvious, or by the present invention practice recognize.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 shows the schematic diagram for the air conditioner that one embodiment of the present of invention provides；
Fig. 2 shows the another schematic diagram for the air conditioner that one embodiment of the present of invention provides；
Fig. 3 shows the another schematic diagram for the air conditioner that one embodiment of the present of invention provides；
Fig. 4 shows a flow chart of the control method for the air conditioner that one embodiment of the present of invention provides；
Fig. 5 shows the another flow chart of the control method for the air conditioner that one embodiment of the present of invention provides.
Reference numeral：
Wherein, correspondences of the Fig. 1 into Fig. 3 between reference numeral and component names is：
10 first pipelines, 12 first throttling devices, 14 outdoor heat exchangers, 16 indoor heat exchangers, 18 compressors, 20 four-ways
Valve, 22 second pipelines, 24 gas-liquid separators, 26 second throttling devices, 28 first valve bodies, 30 second valve bodies, 32 the 3rd pipelines, 34
3rd valve body.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that aforementioned aspect of the present invention, feature and advantage
Mode is applied the present invention is further described in detail.It should be noted that in the case where there is no conflict, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
By using other different from implementing in a manner of described here, therefore, protection scope of the present invention and from following public tool
The limitation of body embodiment.
The control of air conditioner and air conditioner provided according to one embodiment of present invention is described referring to Fig. 1 to Fig. 5
Method processed.
As shown in Figure 1 to Figure 3, what wherein Fig. 2 showed refrigerant when air conditioner is defrosting mode flows to schematic diagram, Fig. 3 institutes
Be shown as air conditioner in normal heating mode refrigerant flow to schematic diagram, provide a kind of air-conditioning according to an embodiment of the invention
Device, air conditioner include：First pipeline 10, the both ends of the first pipeline 10 both ends phase with the first throttling device 12 of air conditioner respectively
Connection, so that the refrigerant in air conditioner enters the outdoor heat exchanger 14 of air conditioner by the first pipeline 10；Second pipeline 22, it is in parallel
It is arranged between 20 first exit end of four-way valve of air conditioner and the gas-liquid separator 24 of air conditioner, is set on the second pipeline 22
There is second throttling device 26.
The present invention provides a kind of air conditioner to include the first pipeline 10 and the second pipeline 22, the both ends difference of the first pipeline 10
It is connected with the both ends of the first throttling device 12 of air conditioner so that when needing defrosting, original refrigerant is flowing through indoor heat exchange
First throttling device 12 between device 16 and outdoor heat exchanger 14 when, refrigerant can select without first throttling device 12 and
It is directly to be fed directly to by the first pipeline 10 by indoor heat exchanger 16 in outdoor heat exchanger 14, and is flowed into outdoor heat exchanger
Refrigerant in 14 is the high temperature and pressure refrigerant being depressured without throttling arrangement, it is possible to achieve utilizes the self-contained heat pair of refrigerant
Outdoor heat exchanger 14 defrosts, and the running route of refrigerant will not be allowed to produce change and cause indoor heating to temporarily cease, and protects
Normal use of the user to air conditioner is demonstrate,proved；Meanwhile in 20 first exit end of four-way valve of air conditioner and the gas-liquid point of air conditioner
Second pipeline 22 in parallel on the pipeline being connected from device 24, second throttling device 26 is provided with the second management, refrigerant around
Cross first throttling device 12 and enter in the condenser in outdoor heat exchanger 14 after progress heat release defrosting so that refrigerant at this time
Liquid is condensed into after it have passed through the condensation twice of the condenser of the condenser of indoor heat exchanger 16 and outdoor heat exchanger 14, this
Refrigerant is returned directly in compressor 18 by Shi Ruruo, the damage of compressor 18 can be caused due to liquid hammer, even if using gas-liquid
Separator 24 can not reduce the risk that compressor 18 returns liquid completely, also result in the reduction of the refrigerant circulation in system, pole
Big weakening heating and defrosting effect, therefore it is provided with second throttling device 26 on the second pipeline 22 so that the refrigerant of liquid
Becoming two state refrigerants of low temperature after second throttling device 26, i.e., when liquid refrigerants passes through second throttling device 26, meeting
Form is caused to be changed into gaseous state and two state refrigerants of liquid mixing from liquid due to being changed into low-temp low-pressure from high temperature and pressure, at this time
Two state refrigerants can be separated most of liquid refrigerants by gas-liquid separator 24 again, reduce liquid coolant directly into
Enter to the situation in compressor 18, and can also ensure to have the gaseous coolant of sufficient amount can come back in compressor 18, keep away
Exempted from the reduction of refrigerant circulation, ensure that the normal service life of compression, it is possible to achieve without refrigerant flow conversion not between
Disconnected heating and defrosting, increases the comfort and reliability of air-conditioning system.
In one embodiment provided by the invention, it is preferable that air conditioner further includes：First valve body 28, the first valve body 28
It is arranged on the first pipeline 10.
In this embodiment, the first valve body 28 is additionally provided with the first pipeline 10, the first valve body 28 is normal in air conditioner
It is turned off when refrigeration or normal heating, and is opened when air conditioner enters defrosting mode, this ensure that air conditioner is removed non-
During white pattern, refrigerant can be throttled by first throttling device 12 so that the refrigerant in defrosting mode and non-defrosting mode
The normal operation of air conditioner will not be ensure that there is a situation where flow path mistake.
In one embodiment provided by the invention, it is preferable that the second valve body 30, the second valve body 30 are arranged on four-way valve 20
Between first exit end and the gas-liquid separator 24 of air conditioner, and the second valve body 30 is arranged in parallel with second throttling device 26.
In this embodiment, the gas-liquid separator of 20 first exit end of four-way valve and air conditioner is arranged in the second valve body 30
The second valve body 30 is provided between 24, the second valve body 30 is to be arranged in parallel with second throttle, the pipeline where the second valve body 30
It is air conditioner when refrigeration mode and heating mode are when non-defrosting mode, the pipeline of refrigerant operation, second is set on the pipeline
Valve body 30, when ensureing in air conditioner as refrigeration mode or heating mode when non-defrosting mode, which is opening,
Refrigerant is entered in gas-liquid separator 24 by the pipeline, and in defrosting mode, the second valve body 30 is closed, and refrigerant must be first to pass through
Cross second throttling device 26 to enter in separator of getting up in the night to urinate so that in defrosting mode and non-defrosting mode, refrigerant will not flow
The situation of road mistake, ensure that the normal operation of air conditioner.
In one embodiment provided by the invention, it is preferable that air conditioner further includes：3rd pipeline 32, the 3rd pipeline 32
One end be connected with the arrival end of four-way valve 20, the other end of the 3rd pipeline 32 is connected with gas-liquid separator 24.
In this embodiment, air conditioner further includes the 3rd pipeline 32, one end of the 3rd pipeline 32 and the entrance of four-way valve 20
End is connected, and the other end of the 3rd pipeline 32 is connected with gas-liquid separator 24 so that in defrosting mode, a part of high pressure is high
The refrigerant of temperature, which is not entered in four-way valve 20, flows to indoor heat exchanger 16 and outdoor heat exchanger 14, but by the refrigerant of compressor 18
The port of export flows directly into the end of the second pipeline 22 so that the two state refrigerants flowed out at the second pipeline 22 and compressor 18
The refrigerant of port of export outflow mutually converges, and the refrigerant of the port of export outflow of compressor 18 heats the refrigerant of two states so that
The refrigerant of two states is heated into saturated vapor or superheated steam, then is returned to by gas-liquid separator 24 in compressor 18, ensures back
Refrigerant to compressor 18 is in saturation or superheat state, ensure that the operating status of compressor 18.
In one embodiment provided by the invention, it is preferable that air conditioner further includes：3rd valve body 34, the 3rd valve body 34
It is arranged on the 3rd pipeline 32.
In this embodiment, air conditioner further includes the 3rd valve body 34, and the 3rd valve body 34 is arranged on the 3rd pipeline 32, the
Three valve bodies 34 are turned off when air conditioner normally freezes or normally heats, and are opened when air conditioner enters defrosting mode, this
Sample ensure that air conditioner in non-defrosting mode, and refrigerant can enter indoor heat exchanger 16 and outdoor heat exchange by four-way valve 20
Exchange heat in device 14, ensure that refrigerant circulation abundance, and then ensure that the normal operation of air conditioner.
In one embodiment provided by the invention, it is preferable that the first valve body 28, the second valve body 30 and the 3rd valve body 34 are
Solenoid valve；And/or first throttling device 12 and second throttling device 26 are electric expansion valve or capillary.
In this embodiment, by the first valve body 28, the second valve body 30 or the 3rd valve body 34 to be arranged to solenoid valve, Ke Yiqi
To the control of the opening and closing flowed to refrigerant, it is contemplated that, the first valve body 28, the second valve body 30 or the 3rd valve body 34 are arranged to
The valve body that other allow or cut-out refrigerant circulates can also realize technical scheme, and first throttling device 12 and second saves
It is electric expansion valve or capillary to flow device 26, can play the role of throttling, it is contemplated that, by 12 He of first throttling device
Second throttling device 26, which is arranged to other throttling arrangements, can also realize technical scheme.
It is contemplated that, when setting the first valve body 28 and the first section device in parallel, parallel way can be set
For the form of four-way valve 20, be in normal mode (heating mode or refrigeration mode) or defrosting mode to the flow path of refrigerant into
Row control；When setting the second valve body 30 in parallel and second throttling device 26, parallel way can be arranged to four-way valve 20
Form, be that the flow path of refrigerant is controlled in normal mode (heating mode or refrigeration mode) or defrosting mode.
A kind of control method of air conditioner is provided according to the second aspect of the invention, for such as any of the above-described technical solution
Air conditioner, therefore, the embodiment of the present invention provide air conditioner control method have first aspect any embodiment carry
Whole beneficial effects of the air conditioner of confession, it is numerous to list herein.
Fig. 4 shows a flow chart of the control method for the air conditioner that one embodiment of the present of invention provides；
As shown in figure 4, the control method of air conditioner includes：
S402, receives after starting defrosting instruction, the indoor heat exchanger and outdoor of closing air conditioner are changed in heating mode
First throttling device between hot device so that refrigerant enters the room of air conditioner by the first pipeline in parallel with first throttling device
External heat exchanger；
S404, opens the second throttling dress between the four-way valve first exit end of air conditioner and the gas-liquid separator of air conditioner
Put.
In this embodiment, received in heating mode after starting defrosting instruction, close the indoor heat exchanger of air conditioner
First throttling device between outdoor heat exchanger so that refrigerant is entered empty by the first pipeline in parallel with first throttling device
The outdoor heat exchanger of device is adjusted, opens the second section between the four-way valve first exit end of air conditioner and the gas-liquid separator of air conditioner
Stream device make it that original refrigerant is flowing through the first throttling device between indoor heat exchanger and outdoor heat exchanger when needing defrosting
When, refrigerant can be selected without first throttling device but is directly fed directly to by the first pipeline by indoor heat exchanger
In outdoor heat exchanger, and the refrigerant being flowed into outdoor heat exchanger is the high temperature and pressure refrigerant being depressured without throttling arrangement, can
Defrosted with realizing using the self-contained heat of refrigerant to outdoor heat exchanger, and the running route of refrigerant will not be allowed to produce change
Change and cause indoor heating to temporarily cease, ensure that normal use of the user to air conditioner；Meanwhile in the four-way valve of air conditioner
Second pipeline in parallel on the pipeline that one port of export is connected with the gas-liquid separator of air conditioner, second is provided with the second management
Throttling arrangement, enters in the condenser in outdoor heat exchanger after progress heat release defrosting in refrigerant around first throttling device,
So that refrigerant at this time condenses after the condensation twice of the condenser and the condenser of outdoor heat exchanger that have passed through indoor heat exchanger
Into liquid, if refrigerant is returned directly in compressor at this time, the damage of compressor can be caused due to liquid hammer, even if making
The risk of compressor time liquid can not be reduced completely with gas-liquid separator, also result in the reduction of the refrigerant circulation in system,
Greatly weaken heating and defrosting effect, therefore second throttling device is provided with the second pipeline so that the refrigerant of liquid exists
Become two state refrigerants of low temperature after second throttling device, i.e., when liquid refrigerants passes through second throttling device, can due to by
High temperature and pressure is changed into low-temp low-pressure and causes form to be changed into gaseous state and two state refrigerants of liquid mixing from liquid, at this time two states
Refrigerant again can be separated most of liquid refrigerants by gas-liquid separator, reduced liquid coolant and entered directly into compression
Situation in machine, and can also ensure to have the gaseous coolant of sufficient amount can come back in compressor, avoid refrigerant circulation
The reduction of amount, ensure that the normal service life of compression, it is possible to achieve without the continuously heating and defrosting of refrigerant flow conversion, increase
Add the comfort and reliability of air-conditioning system.
Fig. 5 shows a flow chart of the control method for the air conditioner that one embodiment of the present of invention provides；
As shown in figure 5, the control method of air conditioner includes：
S502, receives after starting defrosting instruction, the indoor heat exchanger and outdoor of closing air conditioner are changed in heating mode
First throttling device between hot device so that refrigerant enters the room of air conditioner by the first pipeline in parallel with first throttling device
External heat exchanger；
S504, opens the second throttling dress between the four-way valve first exit end of air conditioner and the gas-liquid separator of air conditioner
Put；
S506, opens the 3rd valve body between the arrival end of four-way valve and gas-liquid separator；
S508, closes second valve body in parallel with second throttling device；
S510, after the completion of defrosting, closes the first valve body and second throttling device on the first pipeline；Open first throttle
Device and the second valve body；
S512, closes the 3rd valve body.
In this embodiment, the 3rd valve body between the arrival end of four-way valve and gas-liquid separator, the 3rd valve body position are opened
In on the 3rd pipeline, one end of the 3rd pipeline is connected with the arrival end of four-way valve, the other end of the 3rd pipeline and gas-liquid separation
Device is connected so that in defrosting mode, the refrigerant of a part of high pressure-temperature, which does not enter, flows to indoor heat exchanger in four-way valve
And outdoor heat exchanger, but the end of the second pipeline is flowed directly into by the refrigerant exit end of compressor so that at the second pipeline
The refrigerant that two state refrigerants of outflow are flowed out with the port of export of compressor mutually converges, and the refrigerant of the port of export outflow of compressor is to two
The refrigerant of item state is heated so that and the refrigerant of two states is heated into saturated vapor or superheated steam, then by gas-liquid separator
Return in compressor, the refrigerant for ensureing to return to compressor is in saturation or superheat state, ensure that the operating status of compressor.
In this embodiment, between the four-way valve first exit end and the gas-liquid separator of air conditioner for opening air conditioner
After the step of second throttling device, second valve body in parallel with second throttling device, the second valve body and the second throttling will be closed
For valve to be arranged in parallel, the pipeline where the second valve body is air conditioner when refrigeration mode and heating mode are when non-defrosting mode, cold
The pipeline of matchmaker's operation, sets the second valve body on the pipeline, ensures that in air conditioner be the non-defrostings such as refrigeration mode or heating mode
During pattern, which is opening, and refrigerant is entered in gas-liquid separator by the pipeline, and in defrosting mode, the
Two valve bodies are closed, and refrigerant must be to first pass through second throttling device to enter in separator of getting up in the night to urinate so that in defrosting mode and non-
Refrigerant will not ensure that the normal operation of air conditioner there is a situation where flow path mistake during defrosting mode., after the completion of defrosting, close
Close the first valve body and the second throttling device on the first pipeline；First throttling device and the second valve body are opened, ensures that refrigerant passes through
First throttling device and the second valve body, and the first valve body and second throttling device are no longer flow through, without again to outdoor unit heat exchanger
Carry out defrosting heating.Further included after the step of opening first throttling device and the second valve body：The 3rd valve body is closed, is so ensured
In non-defrosting mode, refrigerant can be entered in indoor heat exchanger and outdoor heat exchanger and be changed air conditioner by four-way valve
Heat, ensure that refrigerant circulation abundance, and then ensure that the normal operation of air conditioner.
In the description of this specification, the orientation or position relationship of the instruction such as term " on ", " under " are based on shown in attached drawing
Orientation or position relationship, be for only for ease of the description present invention and simplify description, rather than instruction or imply signified device
Or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not considered as limiting the invention；
Term " connection ", " installation ", " fixation " etc. should all be interpreted broadly, for example, " connection " can be fixedly connected or can
Dismantling connection, or be integrally connected；It can be directly connected, can also be indirectly connected by intermediary.For this area
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean to combine at least one reality that the particular features, structures, materials, or characteristics that the embodiment or example describe are contained in the present invention
Apply in example or example.In the present specification, schematic expression of the above terms is not necessarily referring to identical embodiment or reality
Example.Moreover, description particular features, structures, materials, or characteristics can in any one or more embodiments or example with
Suitable mode combines.
It these are only the preferred embodiment of the present invention, be not intended to limit the invention, for those skilled in the art
For member, the invention may be variously modified and varied.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (11)
1. a kind of air conditioner, it is characterised in that the air conditioner includes：
First pipeline, the both ends of the both ends of first pipeline respectively with the first throttling device of the air conditioner are connected, with
The refrigerant in the air conditioner is set to enter the outdoor heat exchanger of the air conditioner by first pipeline；
Second pipeline, be arranged in parallel four-way valve first exit end in the air conditioner and the air conditioner gas-liquid separator it
Between, it is provided with second throttling device on second pipeline.
2. air conditioner according to claim 1, it is characterised in that the air conditioner further includes：
First valve body, first valve body are arranged on first pipeline.
3. air conditioner according to claim 2, it is characterised in that the air conditioner further includes：
Second valve body, second valve body be arranged on the four-way valve first exit end and the air conditioner gas-liquid separator it
Between, and second valve body is arranged in parallel with the second throttling device.
4. air conditioner according to claim 3, it is characterised in that the air conditioner further includes：
3rd pipeline, one end of the 3rd pipeline are connected with the arrival end of the four-way valve, the 3rd pipeline it is another
End is connected with the gas-liquid separator.
5. air conditioner according to claim 4, it is characterised in that the air conditioner further includes：
3rd valve body, the 3rd valve body are arranged on the 3rd pipeline.
6. air conditioner according to claim 5, it is characterised in that
First valve body, second valve body and the 3rd valve body are solenoid valve；And/or
The first throttling device and the second throttling device are electric expansion valve or capillary.
A kind of 7. control method of air conditioner, for the air conditioner as any one of claim 1 to 6, it is characterised in that
The control method：
Received in heating mode after starting defrosting instruction, close the indoor heat exchanger of the air conditioner and outdoor heat exchanger it
Between first throttling device so that refrigerant enters the air conditioner by the first pipeline in parallel with the first throttling device
Outdoor heat exchanger；
Open the second throttling dress between the four-way valve first exit end of the air conditioner and the gas-liquid separator of the air conditioner
Put.
8. the control method of air conditioner according to claim 7, it is characterised in that opening the four-way valve of the air conditioner
Further included after the step of second throttling device between the gas-liquid separator of first exit end and the air conditioner：
Open the 3rd valve body between the arrival end of the four-way valve and the gas-liquid separator.
9. the control method of the air conditioner according to claim 8 or 7, it is characterised in that opening the four of the air conditioner
Further included after the step of second throttling device between the gas-liquid separator of port valve first exit end and the air conditioner：
Close second valve body in parallel with the second throttling device.
10. the control method of air conditioner according to claim 9, it is characterised in that
After the completion of defrosting, the first valve body on first pipeline and the second throttling device are closed；
Open the first throttling device and second valve body.
11. the control method of air conditioner according to claim 10, it is characterised in that opening the first throttling device
And further included after the step of second valve body：
Close the 3rd valve body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711069292.4A CN107940876A (en) | 2017-11-03 | 2017-11-03 | The control method of air conditioner and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711069292.4A CN107940876A (en) | 2017-11-03 | 2017-11-03 | The control method of air conditioner and air conditioner |
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| CN109520169A (en) * | 2018-09-11 | 2019-03-26 | 珠海格力电器股份有限公司 | A kind of control method of air conditioner and air conditioner |
| CN109737662A (en) * | 2018-12-25 | 2019-05-10 | 西安交通大学 | A kind of horizontal frostless refrigeration system of refrigerator of compact and defrosting control method |
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Inventor after: Xu Yongfeng Inventor after: Xiong Meibing Inventor after: Yang Yuantao Inventor after: Huang Wen Inventor after: Li Guancun Inventor after: Guo Jian Inventor before: Guo Jian Inventor before: Xu Yongfeng Inventor before: Xiong Meibing Inventor before: Yang Yuantao Inventor before: Huang Wen Inventor before: Li Guancun |
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Application publication date: 20180420 |