CN109539616A - Prevent the compressor protection structure and air-conditioning system of refrigerant migration - Google Patents
Prevent the compressor protection structure and air-conditioning system of refrigerant migration Download PDFInfo
- Publication number
- CN109539616A CN109539616A CN201910001507.1A CN201910001507A CN109539616A CN 109539616 A CN109539616 A CN 109539616A CN 201910001507 A CN201910001507 A CN 201910001507A CN 109539616 A CN109539616 A CN 109539616A
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- CN
- China
- Prior art keywords
- compressor
- air
- valve
- protection structure
- air inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000003507 refrigerant Substances 0.000 title claims abstract description 52
- 238000004378 air conditioning Methods 0.000 title claims abstract description 19
- 230000005012 migration Effects 0.000 title abstract description 17
- 238000013508 migration Methods 0.000 title abstract description 17
- 239000007788 liquid Substances 0.000 claims description 13
- 230000008676 import Effects 0.000 claims description 8
- 210000004899 c-terminal region Anatomy 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010725 compressor oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
-
- 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
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses the compressor protection structures and air-conditioning system that prevent refrigerant migration; compressor protection structure includes: compressor with air entry and exhaust outlet, the air inlet pipe connect on air entry, the exhaust pipe connect on exhaust outlet, the intake valve for switching air inlet pipe on off operating mode, and intake valve turns off air inlet pipe when compressor shutdown.The present invention can prevent after compressor shutdown in refrigerant migration to compressor, effective protection compressor.
Description
Technical field
The present invention relates to Compressor Technology fields, more particularly to prevent compressor protection structure and the air-conditioning system of refrigerant migration
System.
Background technique
The equipment such as air-conditioning system or Teat pump boiler all have the refrigerant circulation circuits such as compressor, heat-exchanger rig, with air-conditioning
For system, there are power-off shutdown phenomenons for system in actual use, and in the state of power-off shutdown, compressor electric heating is lost
Heating function, at this time because outdoor heat exchanger, indoor heat exchanger environment temperature are different, refrigerant is under the action of the temperature difference and self gravity
Transport phenomena occurs, part refrigerant even can be migrated gradually into compressor, after refrigerant is assembled within the compressor, as temperature drops
Low to be gradually condensed into liquid refrigerants, when compressor is again started up, gently then dilute lubricating oil causes compressor oil return bad, it is heavy then
Compressed liquid refrigerant when because of starting, directly damage compression chamber.
Occur preventing the scheme of refrigerant migration in the prior art, such as notification number is the utility model of CN201050882Y
Patent is provided with expansion valve between the outlet of outdoor heat exchanger and the entrance of indoor heat exchanger, expands after compressor shutdown
Valve is in off state, and this scheme has two: 1, being operated normally under off-mode, part refrigerant can be left and change indoors
In hot device 3 and gas-liquid separator 4, this part refrigerant flows back into the problem in compressor there are still migration；2, this system uses
Electric expansion valve, in the case where Teat pump boiler direct power-off shutdown, electric expansion valve can also have little time closure because of power-off and close
Extremely, if refrigerant migration occurs, refrigerant will be directed into compressor, and when powering on booting again, there are great liquid hammer hidden danger for compressor.
Therefore, how to design that effectively prevent the compressor protection structure of refrigerant migration be that industry technology urgently to be resolved is asked
Topic.
Summary of the invention
Lead to the defect of liquid hammer failure to solve to exist in the prior art refrigerant migration to compressor, the present invention proposes anti-
The only compressor protection structure and air-conditioning system of refrigerant migration.
The technical solution adopted by the present invention is that design prevents the compressor protection structure of refrigerant migration, comprising: have air-breathing
The compressor of mouth and exhaust outlet, the air inlet pipe connect on air entry, the exhaust pipe connect on exhaust outlet, switching air inlet pipe on-off shape
The intake valve of state, intake valve turns off air inlet pipe when compressor shutdown.
Preferably, intake valve uses solenoid valve, closing when opening, powering off when intake valve powers on.
Preferably, the outlet of intake valve is connected to air entry by air inlet pipe, the import connection gas-liquid separator of intake valve
Gas outlet.
In a preferred embodiment, compressor protection structure further includes the check valve connecting with exhaust pipe, the import of check valve
Exhaust outlet is connected to by exhaust pipe.
In possible embodiments, compressor protection structure further includes the exhaust valve for switching exhaust pipe on off operating mode, compressor
Exhaust valve turns off exhaust pipe when shutdown, and exhaust valve uses solenoid valve, closing when opening, powering off when exhaust valve powers on.
Preferably, intake valve connects air inlet pipe before compressor start.
Preferably, air inlet pipe restarts compressor after connecting preset time, and preset time is 3 minutes.
The invention also provides air-conditioning systems, including above-mentioned compressor protection structure.
Preferably, air-conditioning system further include: the refrigerant that exhaust pipe flows out is sent to the heat-exchanging component in air inlet pipe, is exchanged heat
Component includes concatenated first heat-exchanger rig and the second heat-exchanger rig.
Preferably, air-conditioning system further includes the four-way valve for switching heat-exchanging component refrigerant flow direction.
Preferably, expansion valve is in series between the first heat-exchanger rig and the second heat-exchanger rig.
Preferably, at least one filter is also in series between the first heat-exchanger rig and the second heat-exchanger rig.
Preferably, the quantity of filter is two, and expansion valve is set between two filters.
Preferably, gas-liquid separator is in series between the refrigerant exit and air inlet pipe of heat-exchanging component.
Compared with prior art, the invention has the following advantages that
1, the air inlet pipe of compressor is connected with the intake valve for switching its on off operating mode, effectively prevents the refrigerant migration of refrigerant to compression
In machine；
2, intake valve uses solenoid valve, even if in the case where system unexpected power-off shutdown, due to the spy of solenoid valve power-off closing
Property remain to cutting air inlet pipeline, prevent possibility of the refrigerant migration into compressor.
Detailed description of the invention
Below with reference to embodiment and attached drawing, the present invention is described in detail, in which:
Fig. 1 is the structural schematic diagram of compressor protection structure in the present invention.
Specific embodiment
As shown in Figure 1, compressor protection structure proposed by the present invention, comprising: compressor 1, air inlet pipe 11 and exhaust pipe 12,
Compressor 1 has air entry and exhaust outlet, and the import of exhaust pipe 12 connects on exhaust outlet, and the outlet of air inlet pipe 11 connects in air entry
On, the import of air inlet pipe 11 is equipped with intake valve 2, and air inlet pipe 11 is connected when intake valve 2 is opened, air inlet pipe when intake valve 2 is closed
11 shutdowns, intake valve 2 connects air inlet pipe 11 when compressor 1 works normally, and intake valve 2 cuts off air inlet pipe 11 when compressor 1 is shut down,
It is equivalent to the refrigerant passage that air entry is led in cutting, even if refrigerant can be also blocked there are refrigerant migration phenomenon after shutting down at this time
Outside air inlet pipe 11, it can not be migrated from air entry to compressor 1.
Preferably, intake valve 2 uses solenoid valve, and intake valve 2 is automatically closed when automatically opening, powering off when powering on, even if
In the case where the 2 unexpected power-off shutdown of place equipment of compressor 1 and intake valve, intake valve 2 also can while the power-off of compressor 1 is shut down
It is automatically closed rapidly because of power-off, 1 liquid hammer failure of compressor caused by preventing because of refrigerant migration.Further, intake valve 2 is being pressed
Air inlet pipe 11 is connected before the starting of contracting machine 1, air inlet pipe 11 restarts compressor 1 after connecting preset time, and preset time is preferably 3
Minute, to guarantee that compressor 1 operates normally.
In a preferred embodiment, check valve 3 is installed, the import of check valve 3 meets going out in exhaust pipe 12 on exhaust pipe 12
To be connected to exhaust outlet on mouthful, the refrigerant of exhaust outlet discharge is flowed out by exhaust pipe 12 from the outlet of check valve 3, and check valve 3 is only permitted
Perhaps refrigerant is flowed to from its import and is exported, and check valve 3 is equivalent to cut-out switch when refrigerant reverse flow, and refrigerant is blocked in check valve
Outside 3, prevent refrigerant from migrating from exhaust outlet to compressor 1, check valve 3 has the advantages that at low cost, high reliablity, effective guarantee
The safe operation of compressor 1.
It is of course also possible to which exhaust valve cuts off gas exhaust piping, phase when compressor 1 is shut down check valve 3 is replaced with exhaust valve
When the refrigerant passage for leading to exhaust outlet in cutting, even if refrigerant can be also blocked in there are refrigerant migration phenomenon after shutting down at this time
Outside exhaust pipe 12, it can not be migrated from air inlet to compressor 1.Preferably, exhaust valve uses solenoid valve, principle and intake valve
Identical, when the unexpected power-off shutdown of equipment where compressor 1, intake valve 2 and exhaust valve, exhaust valve also can be automatic rapidly due to power-off
It closes.Likewise, exhaust valve connects exhaust pipe 12 before the starting of compressor 1.
The invention also provides air-conditioning systems, including above-mentioned compressor protection structure.
As shown in Figure 1, air-conditioning system further include: the heat exchange group being sent to the refrigerant that exhaust pipe 12 flows out in air inlet pipe 11
Part, heat-exchanging component include concatenated first heat-exchanger rig and the second heat-exchanger rig, and the first heat-exchanger rig is outdoor heat exchanger 4, the
Two heat-exchanger rigs are indoor heat exchanger 5, and the refrigerant flow direction of heat-exchanging component is switched by four-way valve 6, and there are four the tools of four-way valve 6
C, tetra- ports D, E, S, C-terminal are connected to C connecting tube 61, and D is terminated with D connecting tube 62, and E is terminated with E connecting tube 63, and S is terminated with S company
Adapter tube 64.In a preferred embodiment, gas-liquid separator 7, refrigerant are in series between the refrigerant exit of heat-exchanging component and air inlet pipe 11
When flowing to indoor heat exchanger 5 from outdoor heat exchanger 4, D connecting tube 62 connects the outlet of check valve 3, and C connecting tube 61 connects indoor heat exchanger
5 refrigerant exit, E connecting tube 63 connect the refrigerant inlet of outdoor heat exchanger 4, and S connecting tube 64 meets the air inlet of gas-liquid separator 7, D
End is connected to the end E, C-terminal is connected to the end S；When refrigerant flows to outdoor heat exchanger 4 from indoor heat exchanger 5, D connecting tube 62 connects check valve
3 outlet, C connecting tube 61 connect the refrigerant inlet of indoor heat exchanger 5, and E connecting tube 63 connects the refrigerant exit of outdoor heat exchanger 4, and S connects
Adapter tube 64 connects the air inlet of gas-liquid separator 7, and the end D is connected to C-terminal, the end E is connected to the end S.
Expansion valve 8, the first heat-exchanger rig and the second heat exchange dress are in series between first heat-exchanger rig and the second heat-exchanger rig
At least one filter 9 is also in series between setting, in a preferred embodiment, the quantity of filter 9 is two, and expansion valve 8 is set to
Between two filters 9, no matter to guarantee refrigerant forward flow or reverse flow in heat-exchanging component, refrigerant can all first pass through filtering
The filtering of device 9 enters back into expansion valve 8, prevents the impurity in refrigerant from blocking expansion valve 8.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (16)
1. a kind of compressor protection structure, comprising: there is the compressor (1) of air entry and exhaust outlet, connect on the air entry
Air inlet pipe (11), the exhaust pipe (12) connect on the exhaust outlet, which is characterized in that further include switching the air inlet pipe (11)
The intake valve (2) of on off operating mode, the compressor (1) intake valve (2) shutdown air inlet pipe (11) when shutting down.
2. compressor protection structure as described in claim 1, which is characterized in that the intake valve (2) uses solenoid valve, described
Closing when opening, powering off when intake valve (2) powers on.
3. compressor protection structure as described in claim 1, which is characterized in that the outlet of the intake valve (2) passes through described
Air inlet pipe (11) is connected to the air entry, the gas outlet of import connection gas-liquid separator (7) of the intake valve (2).
4. compressor protection structure as described in claim 1, which is characterized in that further include being connect with the exhaust pipe (12)
The import of check valve (3), the check valve (3) is connected to the exhaust outlet by the exhaust pipe (12).
5. compressor protection structure as described in claim 1, which is characterized in that further include switching the exhaust pipe (12) on-off
The exhaust valve of state, the compressor (1) exhaust valve shutdown exhaust pipe (12) when shutting down.
6. compressor protection structure as claimed in claim 5, which is characterized in that the exhaust valve uses solenoid valve, the row
Closing when opening, powering off when air valve powers on.
7. such as compressor protection structure as claimed in any one of claims 1 to 6, which is characterized in that the intake valve (2) is described
The air inlet pipe (11) are connected before compressor (1) starting.
8. compressor protection structure as claimed in claim 7, which is characterized in that after the air inlet pipe (11) connects preset time
Restart the compressor (1).
9. compressor protection structure as claimed in claim 8, which is characterized in that the preset time is 3 minutes.
10. a kind of air-conditioning system characterized by comprising compressor protection structure as described in any one of claim 1 to 9.
11. air-conditioning system as claimed in claim 10, which is characterized in that further include: by the cold of the exhaust pipe (12) outflow
Matchmaker is sent to the heat-exchanging component in the air inlet pipe (11), and the heat-exchanging component includes that concatenated first heat-exchanger rig and second are changed
Thermal.
12. air-conditioning system as claimed in claim 11, which is characterized in that further include switching heat-exchanging component refrigerant flowing side
To four-way valve (6).
13. air-conditioning system as claimed in claim 11, which is characterized in that the refrigerant exit of the heat-exchanging component and the air inlet
Gas-liquid separator (7) are in series between pipe (11).
14. air-conditioning system as claimed in claim 11, which is characterized in that first heat-exchanger rig and the second heat-exchanger rig it
Between be in series with expansion valve (8).
15. air-conditioning system as claimed in claim 14, which is characterized in that first heat-exchanger rig and the second heat-exchanger rig it
Between be also in series at least one filter (9).
16. air-conditioning system as claimed in claim 15, which is characterized in that the quantity of the filter (9) is two, described swollen
Swollen valve (8) is set between described two filters (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910001507.1A CN109539616A (en) | 2019-01-02 | 2019-01-02 | Prevent the compressor protection structure and air-conditioning system of refrigerant migration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910001507.1A CN109539616A (en) | 2019-01-02 | 2019-01-02 | Prevent the compressor protection structure and air-conditioning system of refrigerant migration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109539616A true CN109539616A (en) | 2019-03-29 |
Family
ID=65834036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910001507.1A Withdrawn CN109539616A (en) | 2019-01-02 | 2019-01-02 | Prevent the compressor protection structure and air-conditioning system of refrigerant migration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109539616A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595098A (en) * | 2019-10-08 | 2019-12-20 | 珠海格力电器股份有限公司 | Air conditioning system and control method |
| CN110595096A (en) * | 2019-10-08 | 2019-12-20 | 珠海格力电器股份有限公司 | Air conditioning system and control method |
| CN111237979A (en) * | 2020-03-04 | 2020-06-05 | 珠海格力电器股份有限公司 | Control method for improving circulating refrigerant quantity and air conditioner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202328964U (en) * | 2011-12-13 | 2012-07-11 | Tcl空调器(中山)有限公司 | Device for protecting heat pump water heater compressor |
| CN106369719A (en) * | 2016-10-08 | 2017-02-01 | 珠海格力电器股份有限公司 | Heat pump system, control method of heat pump system and air conditioner |
| CN106369891A (en) * | 2016-11-03 | 2017-02-01 | 珠海格力电器股份有限公司 | Air conditioning unit and control method thereof |
| CN209355521U (en) * | 2019-01-02 | 2019-09-06 | 格力电器（合肥）有限公司 | Prevent the compressor protection structure and air-conditioning system of refrigerant migration |
-
2019
- 2019-01-02 CN CN201910001507.1A patent/CN109539616A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202328964U (en) * | 2011-12-13 | 2012-07-11 | Tcl空调器(中山)有限公司 | Device for protecting heat pump water heater compressor |
| CN106369719A (en) * | 2016-10-08 | 2017-02-01 | 珠海格力电器股份有限公司 | Heat pump system, control method of heat pump system and air conditioner |
| CN106369891A (en) * | 2016-11-03 | 2017-02-01 | 珠海格力电器股份有限公司 | Air conditioning unit and control method thereof |
| CN209355521U (en) * | 2019-01-02 | 2019-09-06 | 格力电器（合肥）有限公司 | Prevent the compressor protection structure and air-conditioning system of refrigerant migration |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595098A (en) * | 2019-10-08 | 2019-12-20 | 珠海格力电器股份有限公司 | Air conditioning system and control method |
| CN110595096A (en) * | 2019-10-08 | 2019-12-20 | 珠海格力电器股份有限公司 | Air conditioning system and control method |
| CN111237979A (en) * | 2020-03-04 | 2020-06-05 | 珠海格力电器股份有限公司 | Control method for improving circulating refrigerant quantity and air conditioner |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190329 |