CN208952458U - Defrosting air conditioner - Google Patents
Defrosting air conditioner Download PDFInfo
- Publication number
- CN208952458U CN208952458U CN201821479824.1U CN201821479824U CN208952458U CN 208952458 U CN208952458 U CN 208952458U CN 201821479824 U CN201821479824 U CN 201821479824U CN 208952458 U CN208952458 U CN 208952458U
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- Prior art keywords
- heat exchanger
- air conditioner
- pipeline
- gas
- defrosting
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- 238000010257 thawing Methods 0.000 title claims abstract description 47
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 238000005057 refrigeration Methods 0.000 claims description 11
- 239000003507 refrigerant Substances 0.000 abstract description 39
- 238000001704 evaporation Methods 0.000 abstract description 9
- 239000012071 phase Substances 0.000 description 8
- 230000008020 evaporation Effects 0.000 description 7
- 230000005494 condensation Effects 0.000 description 5
- 238000009833 condensation Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
Landscapes
- Defrosting Systems (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The utility model provides a defrosting air conditioner relates to air conditioner technical field, and the unit does not have the evaporimeter when having solved current air conditioner defrosting mode operation, causes the technical problem that compressor liquid hit damaged easily. The defrosting air conditioner comprises a first heat exchanger, a second heat exchanger, a first pipeline and a second pipeline, wherein two ends of the first pipeline are respectively connected with two ends of a first throttling device, the second pipeline is connected between a first outlet end of a four-way valve and a gas-liquid separator in parallel, the second pipeline is provided with a second throttling device, and an evaporator is connected between an outlet end of the second pipeline and the gas-liquid separator in series. An evaporator is added, when the defrosting mode is operated, the gas-liquid two-phase refrigerant is evaporated into the gas refrigerant, and the gas and the liquid are separated through the gas-liquid separator, so that the liquid impact damage of the compressor can not be caused, and the reliability of the unit is greatly improved; and when in the refrigerating mode and the heating mode, the evaporating temperature is increased after the evaporator is added, and the capacity of the unit is improved.
Description
Technical field
The utility model relates to air conditioner technical fields, more particularly, to a kind of defrosting air conditioner.
Background technique
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 gradually be condensed 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, 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, so that 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 recycled with this eliminates the frost layer on outer machine condenser.This Defrost mode needs stop
The only heating of a period of time brings adverse effect to user.In addition, during changing refrigerant flow, the high-pressure side of system
Switch rapidly in a short time with low pressure survey, gas phase zone and liquid phase region, causes biggish impact to system, be easy to cause device
Damage, increases the operation risk of air-conditioning system.
As shown in Figure 1, increasing the pipe of the first pipeline 10' and second in systems to not suspend heating under defrosting mode
Road 22', refrigerant can choose without first throttling device 12' and flow directly into outdoor heat exchanger 14' when operation, to utilize
The self-contained heat of refrigerant defrosts to outdoor heat exchanger 14'.But when defrosting mode is run, unit without evaporator,
Gas-liquid two-phase refrigerant still be easy to cause compressor 18' liquid hammer even across gas-liquid separator 24', damages compressor 18', unit
Poor reliability.
And when defrost pattern operation, third valve body 34' connects the pressure value at gas-liquid separator 24' higher than the second throttling dress
Pressure value after setting 26' throttling can not flow to this circuit via the refrigerant of second throttling device 26', and flow path disconnects, and unit is reliable
Property decline.
Utility model content
The purpose of this utility model is to provide a kind of defrosting air conditioners, to solve defrosting mode existing in the prior art
The technical issues of unit is without evaporator when operation, be easy to cause compressor liquid hazards.Many technologies provided by the utility model
Many technical effects elaboration as detailed below that optimal technical scheme in scheme can be generated.
To achieve the above object, the utility model provides following technical scheme:
A kind of defrosting air conditioner provided by the utility model, including First Heat Exchanger, the second heat exchanger, the first pipeline and
The both ends of two pipelines, first pipeline are connected with the both ends of first throttling device respectively, and second pipeline is parallel to four-way
Between valve first exit end and gas-liquid separator, second throttling device is provided on second pipeline, second pipeline
Evaporator is in series between outlet end and the gas-liquid separator.
Optionally, the first valve body is provided on first pipeline.
Optionally, second pipeline is parallel with the second valve body, and second valve body is set to the four-way valve first and goes out
Between mouth end and the gas-liquid separator.
Optionally, first valve body, the second valve body, first throttling device and second throttling device with air conditioner
Controller electrical connection.
Optionally, when defrosting mode, the First Heat Exchanger and second heat exchanger are condenser.
Optionally, when heating mode, the First Heat Exchanger is evaporator, and second heat exchanger is condenser.
Optionally, when refrigeration mode, the First Heat Exchanger is condenser, and second heat exchanger is evaporator.
Optionally, the First Heat Exchanger is outdoor heat exchanger.
Optionally, second heat exchanger is indoor heat exchanger.
A kind of defrosting air conditioner provided by the utility model increases an evaporator, when defrosting mode is run, by gas
Liquid two-phase refrigerant evaporation is damaged at gas coolant using the liquid hammer that by gas-liquid separation, not will cause compressor after gas-liquid separator
Bad, the reliability of unit increases substantially；And in refrigeration mode and heating mode, evaporation is improved after increasing an evaporator
Temperature promotes unit capacity.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of schematic diagram for the air conditioner that defrosts of the prior art；
Fig. 2 is the schematic diagram for the defrosting air conditioner that one specific embodiment of the utility model provides；
Fig. 3 is defrosting air conditioner refrigerant flow circuits in defrosting mode in Fig. 2, and arrow is the flow direction of refrigerant in figure；
Fig. 4 is defrosting air conditioner refrigerant flow circuits in refrigeration mode in Fig. 2, and arrow is the flow direction of refrigerant in figure；
Fig. 5 is defrosting air conditioner refrigerant flow circuits in heating mode in Fig. 2, and arrow is the flow direction of refrigerant in figure；
Fig. 6 is a kind of defrosting air conditioner of the utility model compared with existing air conditioner, and refrigerating capacity promotes situation comparison
Figure.
10', the first pipeline in Fig. 1；12', first throttling device；14', outdoor heat exchanger；16', indoor heat exchanger；18',
Compressor；20', four-way valve；22', the second pipeline；24', gas-liquid separator；26', second throttling device；28', the first valve body；
30', the second valve body；32', third pipeline；34', third valve body；
1, compressor in Fig. 2-Fig. 4；2, four-way valve；3, First Heat Exchanger；4, the first valve body；5, first throttling device；6,
Second heat exchanger；7, gas-liquid separator；8, the second valve body；9, second throttling device；10, evaporator.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below by the technology to the utility model
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
As shown in Fig. 2, the utility model provides a kind of defrosting air conditioner, including First Heat Exchanger 3, the second heat exchanger 6,
First pipeline and the second pipeline, the both ends of the first pipeline are connected with the both ends of first throttling device 5 respectively, and the second pipeline is parallel to
Between 2 first exit end of four-way valve and gas-liquid separator 7, second throttling device 9 is provided on the second pipeline, the second pipeline goes out
Evaporator 10 is in series between mouth end and gas-liquid separator 7.
Increase an evaporator 10 by gas-liquid two-phase refrigerant evaporation at gas coolant, then to pass through when defrosting mode is run
It crosses gas-liquid separation after gas-liquid separator 7, not will cause the liquid hazards of compressor 1, the reliability of unit increases substantially；And
And in refrigeration mode and heating mode, evaporating temperature is improved after increasing an evaporator 10, promotes unit capacity.
First Heat Exchanger 3 is outdoor heat exchanger, and the second heat exchanger 6 is indoor heat exchanger.
Optionally embodiment is provided with the first valve body 4 on the first pipeline.
The first valve body 4 is additionally provided on the first pipeline, the first valve body 4 is equal when air conditioner normally freezes or normally heats
It closes, and the opening when air conditioner enters defrosting mode, this ensure that air conditioner, in non-defrosting mode, refrigerant can lead to
It crosses first throttling device 5 to throttle, so that the feelings of flow path mistake will not occur for refrigerant in defrosting mode and non-defrosting mode
Condition ensure that the normal operation of air conditioner.
Optionally embodiment, the second pipeline are parallel with the second valve body 8, and the second valve body 8 is set to four-way valve 2 first
Between outlet end and gas-liquid separator 7.
In the non-defrosting mode such as refrigeration mode and heating mode, the pipeline of refrigerant operation is arranged second on the pipeline
Valve body 8 guarantees that, when air conditioner is the non-defrosting modes such as refrigeration mode or heating mode, which is open state, cold
Matchmaker is entered in gas-liquid separator 7 by the pipeline, and in defrosting mode, and the second valve body 8 is closed, and refrigerant must be to first pass through the
Two throttling sets 9 enter in gas-liquid separator 7, so that flow path mistake will not occur for refrigerant in defrosting mode and non-defrosting mode
Accidentally the case where, it ensure that the normal operation of air conditioner.
Optionally embodiment, the first valve body 4, the second valve body 8, first throttling device 5 and second throttling device 9
It is electrically connected with the controller of air conditioner.
The first valve body 4, the second valve body 8, first throttling device 5 and the second throttling dress are controlled by the controller of air conditioner
9 are set, guarantees that air conditioner swimmingly realizes the switching of various modes, ensures the reliability service of air conditioner.
Optionally embodiment, when defrosting mode, First Heat Exchanger 3 and the second heat exchanger 6 are condenser.
Optionally embodiment, when heating mode, First Heat Exchanger 3 is evaporator, and the second heat exchanger 6 is condensation
Device.
Optionally embodiment, when refrigeration mode, First Heat Exchanger 3 is condenser, and the second heat exchanger 6 is evaporation
Device.
A kind of control method for any of the above defrosting air conditioner: air conditioner is realized in the switching by controlling refrigerant flow
Switching between refrigeration mode, heating mode and defrosting mode.
Either refrigeration mode, heating mode also when defrost pattern, can form a complete reliable circuit.
Optionally embodiment when refrigeration mode, closes the first valve body 4 and second throttling device 9, opens first segment
Device 5 and the second valve body 8 are flowed, enters the second heat exchanger 6 by first throttling device 5 via the refrigerant of First Heat Exchanger 3, then pass through
It crosses four-way valve 2 and the second pipeline enters evaporator 10.
As shown in figure 4, refrigerating circuit: flowing through First Heat Exchanger 3 by the high temperature and high pressure gas refrigerant of compressor 1, make height
The cold coal of the gas of warm high pressure is condensed into highly pressurised liquid condensation, throttles using first throttling device 5 (closing of the first valve body 4) into gas
The refrigerant of liquid two-phase is steamed by the second heat exchanger 6 and evaporator 10 (second throttling device 9 is closed at this time, and the second valve body 8 is opened)
The gas for sending out into low-temp low-pressure enters compressor 1 after gas-liquid separator 7 and compresses.
Optionally embodiment when heating mode, closes the first valve body 4 and second throttling device 9, opens first segment
Device 5 and the second valve body 8 are flowed, enters First Heat Exchanger 3 by first throttling device 5 via the refrigerant of the second heat exchanger 6, then pass through
It crosses four-way valve 2 and the second pipeline enters evaporator 10.
As shown in figure 5, heating circuit: the high temperature and high pressure gas refrigerant come out by compressor 1 flows through First Heat Exchanger 3, cold
Highly pressurised liquid refrigerant is congealed into, using first throttling device 5 (closing of the first valve body 4) throttling at the refrigerant of gas-liquid two-phase, is passed through
First Heat Exchanger 3 and evaporator 10 (second throttling device 9 is closed at this time, and the second valve body 8 is opened) flash to the gas of low-temp low-pressure
Body enters compressor 1 after the separation of gas-liquid separator 7 and compresses.
Optionally embodiment when defrosting mode, closes first throttling device 5 and the second valve body 8, opens the first valve
Body 4 and second throttling device 9 enter First Heat Exchanger 3 by the first pipeline via the refrigerant of the second heat exchanger 6, using four
Port valve 2 and the second valve body 8 enter evaporator 10.
As shown in figure 3, defrosting circuit: the high temperature and high pressure gas refrigerant come out by compressor 1 flows through the second heat exchanger 6, cold
Highly pressurised liquid refrigerant is congealed into, by the first valve body 4 (without first throttling device 5), and is used as condenser (to make when heating at this time
For evaporator) First Heat Exchanger 3 carry out heat exchange, the frost on First Heat Exchanger 3 is removed, so that refrigerant at this time have passed through
The condensation of First Heat Exchanger 3 and the condensation of the second heat exchanger 6, i.e., be condensed into low temperature liquid after condensing twice.At this time by the
It is low to flash to low temperature by evaporator 10 at the low pressure refrigerant of gas-liquid two-phase for two throttling sets 9 (closing of the second valve body 8), throttling
Gaseous coolant is pressed, after gas-liquid separation, is compressed into compressor 1.
As shown in fig. 6, the gas-liquid two-phase refrigerant after throttling becomes cryogenic gaseous refrigerant after twice evaporation exchanges heat, two
Secondary heat exchange improves the degree of superheat of refrigerant, and refrigerating capacity is promoted by 5-1 in figure to 5-7, increases 1-7, heating capacity is mentioned by 4-2
It is raised to 4-8, promotes 2-8.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be wanted with right
Subject to the protection scope asked.
Claims (9)
1. a kind of defrosting air conditioner, including First Heat Exchanger, the second heat exchanger, the first pipeline and the second pipeline, first pipe
The both ends on road are connected with the both ends of first throttling device respectively, and second pipeline is parallel to four-way valve first exit end and gas-liquid
Between separator, be provided with second throttling device on second pipeline, which is characterized in that the outlet end of second pipeline with
Evaporator is in series between the gas-liquid separator.
2. a kind of defrosting air conditioner according to claim 1, which is characterized in that be provided with the first valve on first pipeline
Body.
3. a kind of defrosting air conditioner according to claim 2, which is characterized in that second pipeline is parallel with the second valve
Body, second valve body are set between the four-way valve first exit end and the gas-liquid separator.
4. a kind of defrosting air conditioner according to claim 3, which is characterized in that first valve body, the second valve body, first
Throttling set and second throttling device are electrically connected with the controller of air conditioner.
5. a kind of defrosting air conditioner according to claim 1, which is characterized in that when defrosting mode, the First Heat Exchanger
It is condenser with second heat exchanger.
6. a kind of defrosting air conditioner according to claim 1, which is characterized in that when heating mode, the First Heat Exchanger
For evaporator, second heat exchanger is condenser.
7. a kind of defrosting air conditioner according to claim 1, which is characterized in that when refrigeration mode, the First Heat Exchanger
For condenser, second heat exchanger is evaporator.
8. a kind of defrosting air conditioner according to claim 1, which is characterized in that the First Heat Exchanger is outdoor heat exchange
Device.
9. a kind of defrosting air conditioner according to claim 1, which is characterized in that second heat exchanger is indoor heat exchange
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821479824.1U CN208952458U (en) | 2018-09-11 | 2018-09-11 | Defrosting air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821479824.1U CN208952458U (en) | 2018-09-11 | 2018-09-11 | Defrosting air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208952458U true CN208952458U (en) | 2019-06-07 |
Family
ID=66737530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821479824.1U Active CN208952458U (en) | 2018-09-11 | 2018-09-11 | Defrosting air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208952458U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520169A (en) * | 2018-09-11 | 2019-03-26 | 珠海格力电器股份有限公司 | Air conditioner and control method thereof |
-
2018
- 2018-09-11 CN CN201821479824.1U patent/CN208952458U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520169A (en) * | 2018-09-11 | 2019-03-26 | 珠海格力电器股份有限公司 | Air conditioner and control method thereof |
| CN109520169B (en) * | 2018-09-11 | 2024-06-14 | 珠海格力电器股份有限公司 | Air conditioner and control method thereof |
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| GR01 | Patent grant |