CN106766412A - Four-way valve reversing protection system, compressor system and air conditioning system - Google Patents
Four-way valve reversing protection system, compressor system and air conditioning system Download PDFInfo
- Publication number
- CN106766412A CN106766412A CN201611062347.4A CN201611062347A CN106766412A CN 106766412 A CN106766412 A CN 106766412A CN 201611062347 A CN201611062347 A CN 201611062347A CN 106766412 A CN106766412 A CN 106766412A
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- CN
- China
- Prior art keywords
- way valve
- valve
- protection system
- pressure
- switch
- 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.)
- Pending
Links
- 238000004378 air conditioning Methods 0.000 title claims description 14
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 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
- 230000035484 reaction time Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
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
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/06—Damage
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention provides a four-way valve reversing protection system, a compressor system and an air conditioner system. Wherein the four-way valve commutation protection system comprises an unloading branch arranged in parallel between a high-pressure inlet and a low-pressure outlet of the four-way valve, wherein the unloading branch is arranged as follows: when the four-way valve is reversed, the four-way valve is conducted to unload when the pressure difference between the high-pressure inlet and the low-pressure outlet exceeds a preset value. The invention can effectively reduce the risk that the sliding block in the four-way valve is damaged when the four-way valve is reversed, thereby enlarging the application range of the original four-way valve and being more beneficial to the control of the four-way valve.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of four-way valve communtation protection system, compressor assembly and sky
Adjusting system.
Background technology
In existing air-conditioning system, four-way valve is played a very important role in terms of refrigerant flow direction is controlled.Meanwhile, four-way valve
Sliding block inside main valve, the problem broken because pressure is too high in commutation, also always not yet solves at present inside industry
Problem.
The content of the invention
In view of this, it is an object of the invention to provide a kind of four-way valve protection system, compressor assembly and air-conditioning system,
Reach timely release, it is to avoid four-way valve sliding block in commutation is broken.
The invention provides a kind of four-way valve protection system, using following technical scheme：
A kind of four-way valve communtation protection system, it includes that the high pressure entry for being arranged on the four-way valve in parallel goes out with low pressure
Off-load branch road between mouthful, wherein, the off-load branch road is arranged to：When the four-way valve commutates, when high pressure entry and low pressure
Pressure difference between outlet turns on to carry out off-load when exceeding preset value.
Preferably, the off-load branch road includes the switch valve and unloading valve that are arranged in series, wherein, the switch valve is set
Into the front opening commutated in four-way valve.
Preferably, the switch valve is closed after being provided in four-way valve commutation.
Preferably, after four-way valve commutation in T seconds, the switch valve is closed, wherein, T=0~5.
Preferably, the switch valve is provided in t seconds in advance when four-way valve commutates and opens, wherein, t=5~10.
Preferably, the off-load branch road includes switch valve and the pressure-detecting device for being arranged on the switch valve upstream side,
When the pressure that the pressure-detecting device detects the high pressure entry of the four-way valve exceedes preset security value, opened described in control
Valve is closed to open.
Preferably, the allowable pressure upper limit when four-way valve commutates is P1, and the operating pressure of the unloading valve is P2, its
In, P2≤P1.
Preferably, the switch valve is magnetic valve.
Present invention also offers a kind of compressor assembly, using following technical scheme：
A kind of compressor assembly, including compressor and four-way valve, also protect including foregoing four-way valve commutation of the invention
Protecting system.
Preferably, the high pressure entry of the four-way valve is connected with the exhaust outlet of the compressor, the low pressure of the four-way valve
Outlet is connected with the air entry of the compressor.
Present invention also offers a kind of air-conditioning system, using following technical scheme：
A kind of air-conditioning system, including foregoing compressor assembly of the invention.
The four-way valve protection system that the present invention is provided, by setting release branch road, when can effectively reduce four-way valve commutation,
The risk that sliding block in four-way valve is broken, expands the range of application of original four-way valve, is more beneficial for the control to four-way valve.
Brief description of the drawings
By description referring to the drawings to the embodiment of the present invention, of the invention above-mentioned and other purposes, feature and
Advantage will be apparent from, in the accompanying drawings：
Fig. 1 is a kind of air-conditioning system schematic diagram that the present invention is provided；
1- compressors；2- evaporators；3- expansion valves；4- condensers；5- four-way valves；6- unloading valves；7- switch valves；8- vapour-liquids
Separator.
Specific embodiment
Below based on embodiment, present invention is described, but the present invention is not restricted to these embodiments.
The present invention provides a kind of four-way valve communtation protection system, and the four-way valve is preferably disposed in compressor assembly, with
It is lower to be illustrated by taking the applicable cases in compressor assembly as an example.
As shown in figure 1, the communtation protection system includes being arranged in parallel the first port (high pressure of the four-way valve 5
Entrance) off-load branch road and second port (low tension outlet) between, wherein, in compressor assembly using when, the first end
Mouth is for example communicated for the exhaust outlet with compressor 1, and the second port is for example communicated for the air entry with compressor 1, institute
Stating off-load branch road is used for：When the four-way valve 5 commutates, when the pressure difference between first port and second port exceedes preset value
Conducting reaches the purpose of protection four-way valve 5 to carry out off-load, especially avoids the inner slide (not shown) of four-way valve 5 from being beaten
It is bad.
Further, the off-load branch road can include the switch valve 7 and unloading valve 6 that are arranged in series, wherein, the switch
Valve 7 is provided in the front opening of the commutation of four-way valve 5, and (for example, T seconds interior, T after commutation preferably after the commutation of four-way valve 5
=0~5, also, T is smaller, is more conducive to avoiding energy loss) close.As shown in figure 1, before the commutation of four-way valve 5, switch
After valve 7 is opened, if pressure difference between the first port of four-way valve 5 and second port exceedes preset value (such as action pressure of unloading valve 6
Power), then unloading valve 6 can be acted to carry out release in the presence of the pressure difference, so as to protect four-way valve 5.In present embodiment,
The switch valve 7 preferably may be provided the upstream of the unloading valve 6, naturally it is also possible to be arranged on the downstream of the unloading valve 6.
In specific works, can be configured in the control logic of corresponding compressor assembly or air-conditioning system, with
Just it is first turned on switch valve 7 before four-way valve commutation so that unloading valve 6 is directly parallel in first port and second end of four-way valve
Between mouthful such that it is able to be controlled by the pressure at four-way valve two ends.
Alternatively, the off-load branch road can include switch valve (not shown) and be arranged on the switch valve upstream side
Pressure-detecting device (not shown), whether the switch valve is opened before four-way valve 5 commutates is controlled by pressure inspection
Survey the testing result of device.For example, before the commutation of four-way valve 5, when pressure-detecting device detects the pressure of four-way valve first port
When power (also implying that the pressure difference between first port and second port) exceedes preset security value, just can be beaten with controlling switch valve
Open, be done directly off-load；, whereas if pressure-detecting device detects the pressure of four-way valve first port and not up to default peace
Total head, then need not open switch valve, and four-way valve can directly be commutated, and will not be caused danger.In present embodiment, off-load branch
Road need not use unloading valve, can equally reach the purpose of safe off-load.
Further, in above two implementation method, the switch valve can use magnetic valve, be controlled with facilitating
System.
Further, as shown in figure 1, the allowable pressure upper limit when four-way valve 5 commutates is P1, the unloading valve 6
Operating pressure is P2, wherein, P2≤P1.Allowable pressure upper limit when being commutated according to four-way valve 5, selects suitable unloading valve 6, choosing
Select principle be unloading valve 6 operating pressure try one's best close to four-way valve 5 commutate when the allowable pressure upper limit, it is preferable that P1=P2.
Further, as shown in figure 1, the switch valve 7 is provided in t seconds in advance opening when four-way valve 5 commutates, its
In, t=5~10.Preferably, when needing to perform 5 commutation action of four-way valve, switch valve 7 is opened for 10 seconds in advance, then unloading valve 6
Conducting carries out release.After the completion of the commutation of four-way valve 5, switch valve 7 is closed immediately.Specifically, can be in corresponding compressor system
It is configured in the control logic of system or air-conditioning system, for example, needing to control four-way when the instruction for receiving operational mode change
When valve commutates, can first controlling switch valve 7 open, after postponing t second, then perform the action that four-way valve commutates.The setting of time t,
Primarily to ensure that unloading valve 6 has the enough reaction time to complete off-load, if the time is too short, it is likely that happens is that,
Although pressure transfinite, but unloading valve 6 not yet completes off-load action, so that four-way valve is still commutated at elevated pressures,
And cannot sufficiently protect.
As shown in figure 1, present invention also offers a kind of compressor assembly, including compressor 1 and four-way valve 5, also including this
Invent foregoing four-way valve communtation protection system, the first port of the exhaust outlet of the compressor 1 and the four-way valve 5
(high pressure entry) is connected, and the second port (low tension outlet) of the four-way valve 5 is connected with the air entry of the compressor 1, energy
It is enough to realize protection four-way valve 5, prevent the inner slide of four-way valve 5 from being broken.The compressor assembly is widely used in heat pump, air-conditioning system
System etc..
As shown in figure 1, present invention also offers a kind of air-conditioning system, including foregoing compressor assembly of the invention.
Preferably, as shown in figure 1, air-conditioning system is included by compressor 1, evaporator 2, expansion valve 3, condenser 4, four-way valve 5 and vapour-liquid
The circulation loop that separator 8 is constituted, and the release branch road being preferably made up of unloading valve 6 and switch valve 7, release branch road and four-way
Valve 5 is in parallel.
The present invention provides a kind of four-way valve communtation protection system, when the four-way valve 4 commutates, when first port and second
When pressure difference between port exceedes preset value, release is bypassed by off-load branch road in time, reach the purpose of protection four-way valve 4, kept away
Exempt from sliding block to be broken, improve the reliability of system operation.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for those skilled in the art
For, the present invention can have various changes and change.It is all any modifications made within spirit and principles of the present invention, equivalent
Replace, improve etc., should be included within the scope of the present invention.
Claims (11)
1. a kind of four-way valve communtation protection system, it is characterised in that the high pressure entry including being arranged on the four-way valve in parallel
Off-load branch road between low tension outlet, wherein, the off-load branch road is arranged to：When the four-way valve commutates, when height is pressed into
Pressure difference between mouth and low tension outlet turns on to carry out off-load when exceeding preset value.
2. four-way valve communtation protection system according to claim 1, it is characterised in that the off-load branch road sets including series connection
The switch valve and unloading valve put, wherein, the switch valve is provided in the front opening of four-way valve commutation.
3. four-way valve communtation protection system according to claim 2, it is characterised in that the switch valve is provided in four
Closed after port valve commutation.
4. four-way valve communtation protection system according to claim 3, it is characterised in that after four-way valve commutation T second it is interior,
The switch valve is closed, wherein, T=0~5.
5. four-way valve communtation protection system according to claim 2, it is characterised in that the switch valve is provided in four
Port valve shifts to an earlier date t seconds opening when commutating, wherein, t=5~10.
6. four-way valve communtation protection system according to claim 1, it is characterised in that the off-load branch road includes switch valve
With the pressure-detecting device for being arranged on the switch valve upstream side, when the pressure-detecting device detects the height of the four-way valve
When the pressure for being pressed into mouth exceedes preset security value, the switch valve is controlled to open.
7. according to the four-way valve communtation protection system that one of claim 2-5 is described, it is characterised in that when the four-way valve commutates
The allowable pressure upper limit be P1, the operating pressure of the unloading valve is P2, wherein, P2≤P1.
8. according to the four-way valve communtation protection system that one of claim 2-6 is described, it is characterised in that the switch valve is electromagnetism
Valve.
9. a kind of compressor assembly, including compressor and four-way valve, it is characterised in that also described including one of claim 1-8
Four-way valve communtation protection system.
10. compressor assembly according to claim 9, it is characterised in that the high pressure entry of the four-way valve and the pressure
The exhaust outlet of contracting machine is connected, and the low tension outlet of the four-way valve is connected with the air entry of the compressor.
11. a kind of air-conditioning systems, it is characterised in that including the compressor assembly described in claim 9 or 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611062347.4A CN106766412A (en) | 2016-11-25 | 2016-11-25 | Four-way valve reversing protection system, compressor system and air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611062347.4A CN106766412A (en) | 2016-11-25 | 2016-11-25 | Four-way valve reversing protection system, compressor system and air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106766412A true CN106766412A (en) | 2017-05-31 |
Family
ID=58901739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611062347.4A Pending CN106766412A (en) | 2016-11-25 | 2016-11-25 | Four-way valve reversing protection system, compressor system and air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106766412A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401851A (en) * | 2017-09-08 | 2017-11-28 | 海信（广东）空调有限公司 | Air conditioner system and control method for defrosting without stopping air conditioner system |
| CN109059173A (en) * | 2018-07-25 | 2018-12-21 | 广东美的制冷设备有限公司 | Air conditioner and its defrosting control method, computer readable storage medium |
| CN109405337A (en) * | 2018-11-13 | 2019-03-01 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN111076447A (en) * | 2019-12-30 | 2020-04-28 | 珠海格力电器股份有限公司 | Four-way valve mechanism, air conditioner and regulation and control method |
| CN114234368A (en) * | 2021-12-27 | 2022-03-25 | 珠海格力电器股份有限公司 | Control method, control device, and nonvolatile storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202092388U (en) * | 2011-04-28 | 2011-12-28 | 青岛海信日立空调系统有限公司 | Air-conditioning refrigeration loop and air conditioner provided with same |
| CN204006307U (en) * | 2014-04-21 | 2014-12-10 | 广东美的集团芜湖制冷设备有限公司 | The air-conditioner with unloading function |
| CN105928265A (en) * | 2016-05-31 | 2016-09-07 | 广东美的制冷设备有限公司 | Air conditioner system and defrosting control method thereof |
| CN206247718U (en) * | 2016-11-25 | 2017-06-13 | 珠海格力电器股份有限公司 | Four-way valve reversing protection system, compressor system and air conditioning system |
-
2016
- 2016-11-25 CN CN201611062347.4A patent/CN106766412A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202092388U (en) * | 2011-04-28 | 2011-12-28 | 青岛海信日立空调系统有限公司 | Air-conditioning refrigeration loop and air conditioner provided with same |
| CN204006307U (en) * | 2014-04-21 | 2014-12-10 | 广东美的集团芜湖制冷设备有限公司 | The air-conditioner with unloading function |
| CN105928265A (en) * | 2016-05-31 | 2016-09-07 | 广东美的制冷设备有限公司 | Air conditioner system and defrosting control method thereof |
| CN206247718U (en) * | 2016-11-25 | 2017-06-13 | 珠海格力电器股份有限公司 | Four-way valve reversing protection system, compressor system and air conditioning system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401851A (en) * | 2017-09-08 | 2017-11-28 | 海信（广东）空调有限公司 | Air conditioner system and control method for defrosting without stopping air conditioner system |
| CN109059173A (en) * | 2018-07-25 | 2018-12-21 | 广东美的制冷设备有限公司 | Air conditioner and its defrosting control method, computer readable storage medium |
| CN109405337A (en) * | 2018-11-13 | 2019-03-01 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN111076447A (en) * | 2019-12-30 | 2020-04-28 | 珠海格力电器股份有限公司 | Four-way valve mechanism, air conditioner and regulation and control method |
| CN114234368A (en) * | 2021-12-27 | 2022-03-25 | 珠海格力电器股份有限公司 | Control method, control device, and nonvolatile storage medium |
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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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |