CN106196763A - Three-position four-way valve and there is its air-conditioner - Google Patents
Three-position four-way valve and there is its air-conditioner Download PDFInfo
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- CN106196763A CN106196763A CN201510220413.5A CN201510220413A CN106196763A CN 106196763 A CN106196763 A CN 106196763A CN 201510220413 A CN201510220413 A CN 201510220413A CN 106196763 A CN106196763 A CN 106196763A
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- valve
- interface
- spool
- low pressure
- condenser
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Abstract
The invention discloses a kind of three-position four-way valve, including valve body, spool and driving means, described valve body includes forming valve pocket therein and exhaust port, low pressure valve interface, return-air interface and the condenser interface connected respectively with described valve pocket, in described spool is movably arranged as described valve pocket and has the first switching position, the second switching position and the centre position between described first switching position and described second switching position by the driving of described driving means.The invention also discloses a kind of air-conditioner.The coolant injection passage connected can be formed between low pressure valve with condenser by this three-position four-way valve, therefore, it is possible to utilize low pressure valve to fill coolant, coolant is directly entered condenser by coolant injection passage in this process, without entering compressor, therefore enormously simplify on the premise of ensureing refrigeration system reliability and fill fluorine technique, not only increase production efficiency, and ensure that the safety filling fluorine operation.
Description
Technical field
The present invention relates to refrigeration technology field, particularly relate to a kind of three-position four-way valve and there is its air-conditioner.
Background technology
Along with popularizing of domestic air conditioner, the yield of air-conditioner presents the trend increased year by year always, is working as
Under the background of front social need, manufacturability, production efficiency and production safety that air-conditioner produces seem
Particularly important.It is limited to the version of existing cross valve, in air-conditioner production process, fills fluorine link,
It is usually on certain refrigerant pipeline between condenser and high pressure valve and connects one and fill fluorine process duct, profit
Fill fluorine process duct with this to be charged in condenser by coolant, thus avoid leading because coolant is directly entered compressor
Cause compressor and abnormal situation occurs.But, based on the existing fluorine process of filling filling fluorine process duct it is: first
It is welded to the one end filling fluorine process duct specify on pipeline, then at the other end filling fluorine process duct, spy is installed
Surely fluorine angle valve is filled；Open compressor evacuation and carry out coolant injection, will fill with clamp after coolant is full of
The middle part of fluorine process duct is unloaded after pressing from both sides flat sealing and is filled fluorine angle valve；Finally use solder will fill fluorine process duct
On unload fill fluorine angle valve pipe end sealing weld closure.Obviously, existing fluorine technique of filling not only affects production efficiency,
Use the mode pressing from both sides flat sealing to easily cause coolant leakage, there is the coolant that ignites when secondary welding seals
Risk.
Summary of the invention
Present invention is primarily targeted at a kind of three-position four-way valve of offer, it is intended to solve existing to fill fluorine technique
Cause production efficiency low and the technical problem of processing safety difference.
For achieving the above object, the present invention provides a kind of three-position four-way valve, including valve body, spool and driving
Device, described valve body includes that the valve pocket formed therein connects with the aerofluxus connected with described valve pocket respectively
Mouth, low pressure valve interface, return-air interface and condenser interface, described spool is movably arranged as described valve
Intracavity is also had the first switching position, the second switching position by the driving of described driving means and is positioned at
Centre position between described first switching position and described second switching position, wherein:
When described spool is positioned at described first switching position, described low pressure valve interface and described return-air interface it
Between connected by the first passage formed on described spool, and described exhaust port connects with described condenser
Connected by described valve pocket between Kou；
When described spool is positioned at described second switching position, described condenser interface and described return-air interface it
Between connected by described first passage, by described valve between described exhaust port and described low pressure valve interface
Chamber connects；
When described spool is positioned at described centre position, between described low pressure valve interface and described condenser interface
Connected by the second channel formed on described spool.
Preferably, described valve pocket has the face that is slidably matched abutting with described spool and forming sealing cooperation,
Described low pressure valve interface, return-air interface and condenser interface are slidably matched on face described in being successively set on.
Preferably, described spool includes insert body and is formed at the determining of opposite end of described insert body
End, position, described insert body has the bottom surface contacted with the described formation face, face that is slidably matched, described location
End is slidably matched with described valve pocket, and described bottom surface and described cunning under the effect of described retaining tips
Dynamic cooperation face remains sealing mated condition, positioning end described in the executive component of described driving means and two
At least one in portion connects, to drive described spool to move in described valve pocket.
Preferably, described first passage be described bottom surface cave inward formed axial notch, described second
Passage is the axial cavity of the inside being formed at described insert body, and described axial cavity has and runs through described
Two openings of bottom surface.
Preferably, the shape of cross section of described valve pocket in " D " font, described in the face of being slidably matched be described valve
The planar section of the internal face in chamber.
Preferably, described driving means drives described executive component action by electromagnetic force, or described in drive
Dynamic device drives described executive component action by air pressure.
Preferably, described spool by copper material or has the plastics of self-lubricating property and makes.
Additionally, for achieving the above object, the present invention also provides for a kind of air-conditioner, is sequentially connected with including head and the tail
With constitute the compressor of refrigerant circulation circuit, three-position four-way valve, condenser, throttling arrangement, vaporizer with
And low pressure valve, described three-position four-way valve is the three-position four-way valve described in any of the above-described technical scheme, institute
State exhaust port to connect with the air vent of described compressor, described return-air interface and the air-breathing of described compressor
Mouth connection, described condenser interface connects with described condenser, described low pressure valve interface and described low pressure valve
Connection.
A kind of three-position four-way valve provided by the present invention and have its air-conditioner, due to can be by switching valve
The coolant injection passage that the position of core and being formed between low pressure valve with condenser connects, therefore at air-conditioner
Filling fluorine link low pressure valve can be utilized to fill coolant in production process, coolant passes through coolant in this process
Filled passage is directly entered condenser, without entering compressor, therefore is ensureing refrigeration system reliability
Enormously simplify under premise and fill fluorine technique, not only increase production efficiency, and ensure that and fill fluorine operation
Safety.
Accompanying drawing explanation
Fig. 1 is the coolant circulating system schematic diagram of the air-conditioner of the present invention；
Fig. 2 is that internal structure when being in the first switching position of the spool in the three-position four-way valve of the present invention is shown
It is intended to；
Fig. 3 be the spool in the three-position four-way valve of the present invention in an intermediate position time internal structure schematic diagram；
Fig. 4 is that internal structure when being in the second switching position of the spool in the three-position four-way valve of the present invention is shown
It is intended to；
Fig. 5 is the structural representation of the spool shown in Fig. 2,3,4；
Fig. 6 is that location status when being in the first switching position of the spool in the three-position four-way valve of the present invention shows
It is intended to；
Fig. 7 be the spool in the three-position four-way valve of the present invention in an intermediate position time location status schematic diagram；
Fig. 8 is that location status when being in the second switching position of the spool in the three-position four-way valve of the present invention shows
It is intended to.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, see accompanying drawing and do further
Explanation.
Detailed description of the invention
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit
Determine the present invention.
The present invention provides a kind of air-conditioner, sees Fig. 1, and in one embodiment, this air-conditioner includes that head and the tail depend on
Secondary connection is to constitute the compressor 200 of refrigerant circulation circuit, three-position four-way valve 100, condenser 300, joint
Stream device 400, vaporizer 500 and low pressure valve 600, made by the commutation of this three-position four-way valve 100
Coolant flows in described refrigerant circulation circuit forward or backwards, thus realizes refrigeration and heat-production functions, joint
Stream device 400 can be electric expansion valve, it is also possible to is capillary tube, the most also can also is that other are any
The restricting element being suitable for, to realize the expenditure and pressure to coolant.In the present embodiment, three-position four-way valve 100
Can also be had by switch operating state between low pressure valve 600 with condenser 300, form connect cold
Matchmaker fills passage, the coolant from low pressure valve 600 filling can be made to enter condensation by this coolant injection passage
Device 300, without entering compressor 200, thus ensures the reliability of refrigeration system, it is to avoid coolant is direct
Enter compressor 200 and cause compressor 200 that abnormal situation occurs.It is understood that the present invention
Air-conditioner also include other indispensable but for existing known parts, such as blower fan, numerous to list herein.
Seeing Fig. 2 to Fig. 6, in one embodiment, this three-position four-way valve 100 includes valve body 110, spool
120 and driving means (not shown), valve body 110 include being formed valve pocket 111 therein and respectively with
Exhaust port 112, low pressure valve interface 113, return-air interface 114 and the condenser of this valve pocket 111 connection
Interface 115, in spool 120 is movably arranged as valve pocket 111 and has the by the driving of driving means
One switching position, the second switching position and the centre between the first switching position and the second switching position
Position, in the present embodiment, spool 120 for linear motion and the first switching position, centre position and
Any switching laws between second switching position, thus realize the switching to refrigerant flow.When specifically applying, row
Gas interface 112 connects with the air vent of compressor 200, return-air interface 114 and the air-breathing of compressor 200
Mouth connection, condenser interface 115 connects with condenser 300, low pressure valve interface 113 and low pressure valve 600
Connection.
In conjunction with Fig. 1, when spool 120 is positioned at the first switching position, low pressure valve interface 113 and return-air interface
Between 114, the first passage 121 by being formed on spool 120 connects, and exhaust port 112 and condensation
Being connected by valve pocket 111 between device interface 115, now the coolant from compressor 200 flows through three successively
Cross valve 100, condenser 300, throttling arrangement 400, vaporizer 500 and low pressure valve 600, and incite somebody to action
Refrigerant circulation circuit switches to kind of refrigeration cycle, thus realizes the refrigerating function of air-conditioner；In conjunction with Fig. 3, work as valve
When core 120 is positioned at the second switching position, by first between condenser interface 115 and return-air interface 114
Passage 121 connects, and is connected, now by valve pocket 111 between exhaust port 112 with low pressure valve interface 113
Coolant from compressor 200 flow through successively three-position four-way valve 100, low pressure valve 600, vaporizer 500,
Throttling arrangement 400 and condenser 300, and refrigerant circulation circuit is switched to and heats circulation, thus realize
The heat-production functions of air-conditioner；In conjunction with Fig. 2, when spool 120 is centrally located, low pressure valve interface 113
Connected by the second channel 122 formed on spool 120 with between condenser interface 115, now due to
The coolant injection passage connected is formed between low pressure valve 600 with condenser 300, and compressor 200
Air vent and air entry are all turned off, and therefore directly can fill coolant on low pressure valve 600, cold filling
May insure that during matchmaker that coolant is directly entered condenser 300 by coolant injection passage, without entering
Compressor 200.Fill fluorine process duct with existing employing and fill compared with the mode of coolant, it is not necessary to increase coolant and fill
Note accessory, mode of operation is simple and convenient, only need to switch the duty of three-position four-way valve 100,
Therefore enormously simplify on the premise of ensureing refrigeration system reliability and fill fluorine technique, not only increase production effect
Rate, and ensure that the safety filling fluorine operation.Additionally, the three-position four-way valve 100 of the present invention is possessing
Switching coolant realizes building the function of coolant injection passage on the basis of flowing to, substantially increase 3-position 4-way
The function degree of integration of valve 100 and utilization rate.
In alternate embodiments, valve pocket 111 has the cunning abutting with spool 120 and forming sealing cooperation
Dynamic cooperation face 116, and low pressure valve interface 113, return-air interface 114 and condenser interface 115 are successively
It is arranged on this to be slidably matched on face 116, such as arranges in line such that it is able to simplify three-position four-way valve
The internal structure of 100, the switch control logic simultaneously making its duty is simpler.If Fig. 2 is to figure
Shown in 4, exhaust port 112 and remaining interface are positioned at the two opposite sides of valve body 110, thus are conducive to reducing
The construction size of valve body 110.It is preferred that be slidably matched, face 116 is plane, and such as valve pocket 111 is transversal
Face shape is in " D " font, and the planar section of the internal face that face 116 is valve pocket 111 of being slidably matched, valve
Core 120 and the preload pressure keeping certain that is slidably matched between face 116, thus ensure both contact interfaces
The sealing formed coordinates reliable and stable.Internal face in view of spool 120 with valve pocket 111 directly contacts,
In order to ensure that spool 120 moves smooth and easy and sealing property, spool 120 is by copper material or has self-lubricating property
Plastics make, certain valve body 110 can also be made up of copper material, certainly uses other to meet requirement of strength
Material also may be used.
In conjunction with Fig. 5, spool 120 includes insert body 123 and be formed at this insert body 123 relative two
The retaining tips 124 of end, and insert body 123 has and forms, with the face of being slidably matched 116, the end that face contacts
Face 125, the face 116 that is slidably matched is plane with bottom surface 125, thus strengthens and seal the reliability coordinated,
The most this plane fit structure also can realize the location to spool 120, prevents spool 120 in use
Cause poorly sealed because producing rotation.Retaining tips 124 is slidably matched with valve pocket 111, it shall be guaranteed that
Both are in close contact, thus begin with the face of being slidably matched 116 at the effect bottom surface 125 of retaining tips 124
Keep eventually sealing mated condition.In order to simplify structure design, the executive component of driving means and two positioning ends
At least one in portion 124 connects, and to drive spool 120 to move in valve pocket 111, wherein drives dress
Put and can drive executive component action by electromagnetic force, it is also possible to drive executive component action by air pressure,
Certainly driving means can drive spool 120 to move to use other any suitable forms, the present invention couple
This is not restricted.Under the drive of the executive component of driving means, spool 120 moves along valve pocket 111,
Thus realize switching before the first switching position, centre position and the second switching position.
In a preferred embodiment, second channel 122 is inside axial being formed at insert body 123
Cavity, i.e. axial cavity extend along the length direction of insert body 123, and this axial cavity has and runs through
Two openings of bottom surface 125, can make low pressure valve interface 113 with condenser interface 115 even by this two opening
Logical, and the axial notch of first passage 121 be bottom surface 125 cave inward formation, have simple and reliable
Feature, this first passage 121 can also carry out similar Design with reference to second channel 122 certainly, but this
Plant version and be unfavorable for reducing the size of spool 120.
Technical scheme according to embodiments of the present invention, due to can by switching spool 120 position and low
Form the coolant injection passage connected between pressure valve 600 with condenser 300, therefore produced at air-conditioner
Filling fluorine link low pressure valve 600 can be utilized to fill coolant in journey, coolant is filled by coolant in this process
Note passage is directly entered condenser 300, without entering compressor 200, therefore is ensureing that refrigeration system is reliable
Enormously simplify on the premise of property and fill fluorine technique, not only increase production efficiency, and ensure that and fill fluorine behaviour
The safety made.
These are only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every
Utilize equivalent structure or equivalence flow process conversion that description of the invention and accompanying drawing content made, or directly or
Connect and be used in other relevant technical fields, be the most in like manner included in the scope of patent protection of the present invention.
Claims (8)
1. a three-position four-way valve, it is characterised in that include valve body, spool and driving means, described valve
Body includes that the valve pocket formed therein connects with exhaust port, the low pressure valve connected with described valve pocket respectively
Mouthful, return-air interface and condenser interface, in described spool is movably arranged as described valve pocket and pass through institute
State the driving of driving means and there is the first switching position, the second switching position and be positioned at described first switching
Centre position between position and described second switching position, wherein:
When described spool is positioned at described first switching position, described low pressure valve interface and described return-air interface it
Between connected by the first passage formed on described spool, and described exhaust port connects with described condenser
Connected by described valve pocket between Kou；
When described spool is positioned at described second switching position, described condenser interface and described return-air interface it
Between connected by described first passage, by described valve between described exhaust port and described low pressure valve interface
Chamber connects；
When described spool is positioned at described centre position, between described low pressure valve interface and described condenser interface
Connected by the second channel formed on described spool.
2. three-position four-way valve as claimed in claim 1, it is characterised in that described valve pocket has with described
Spool abuts and forms the face that is slidably matched coordinated that seals, described low pressure valve interface, return-air interface and cold
Condenser interface is slidably matched on face described in being successively set on.
3. three-position four-way valve as claimed in claim 2, it is characterised in that described spool includes that spool is originally
Body and be formed at the retaining tips of opposite end of described insert body, described insert body has with described
Be slidably matched formation face, face contact bottom surface, described retaining tips is slidably matched with described valve pocket, and
Under the effect of described retaining tips, described bottom surface and the described face of being slidably matched remain sealing mated condition,
At least one in retaining tips described in the executive component of described driving means and two connects, described to drive
Spool moves in described valve pocket.
4. three-position four-way valve as claimed in claim 3, it is characterised in that described first passage is described
Bottom surface cave inward formed axial notch, described second channel is the inside being formed at described insert body
Axial cavity, described axial cavity has two openings running through described bottom surface.
5. three-position four-way valve as claimed in claim 3, it is characterised in that the cross section shape of described valve pocket
Shape in " D " font, described in the face of being slidably matched be the planar section of internal face of described valve pocket.
6. the three-position four-way valve as described in claim 3,4 or 5, it is characterised in that described driving fills
Put and drive described executive component action by electromagnetic force, or described driving means drives by air pressure described
Executive component action.
7. the three-position four-way valve as according to any one of claim 1 to 5, it is characterised in that described valve
Core is by copper material or has the plastics of self-lubricating property and makes.
8. an air-conditioner, it is characterised in that include that head and the tail are sequentially connected with to constitute refrigerant circulation circuit
Compressor, three-position four-way valve, condenser, throttling arrangement, vaporizer and low pressure valve, described three four
Logical valve is the three-position four-way valve according to any one of claim 1 to 7, described exhaust port and described pressure
The air vent connection of contracting machine, described return-air interface connects with the air entry of described compressor, described condenser
Interface connects with described condenser, and described low pressure valve interface connects with described low pressure valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510220413.5A CN106196763B (en) | 2015-05-04 | 2015-05-04 | Three-position four-way valve and with its air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510220413.5A CN106196763B (en) | 2015-05-04 | 2015-05-04 | Three-position four-way valve and with its air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106196763A true CN106196763A (en) | 2016-12-07 |
| CN106196763B CN106196763B (en) | 2018-06-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510220413.5A Active CN106196763B (en) | 2015-05-04 | 2015-05-04 | Three-position four-way valve and with its air conditioner |
Country Status (1)
| Country | Link |
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| CN (1) | CN106196763B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105419A (en) * | 2017-12-12 | 2018-06-01 | 珠海格力电器股份有限公司 | Four-way valve, air-conditioner set and control method |
| CN108705984A (en) * | 2018-08-17 | 2018-10-26 | 福建工程学院 | A kind of device and method of confined space fire prevention and anti-suffocation |
| CN111442115A (en) * | 2020-03-19 | 2020-07-24 | 珠海格力电器股份有限公司 | Four-way valve and air conditioning system using same |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5779366A (en) * | 1980-10-31 | 1982-05-18 | Matsushita Electric Ind Co Ltd | Four-way valve of refrigerator |
| JPH11325634A (en) * | 1998-05-20 | 1999-11-26 | Fujitsu General Ltd | Four-way valve cooler of air conditioner |
| CN101084401A (en) * | 2004-09-08 | 2007-12-05 | 开利公司 | Hot gas bypass through four-way reversing valve |
| JP2008138995A (en) * | 2006-12-05 | 2008-06-19 | Hitachi Appliances Inc | Four-way selector valve and air-conditioner using the same |
| CN101205984A (en) * | 2006-12-19 | 2008-06-25 | 日立空调·家用电器株式会社 | Four-port conversion value and air conditioner using the same |
| KR20100026263A (en) * | 2008-08-29 | 2010-03-10 | 김영관 | Four way switching valve for heating and cooling system |
| CN203374885U (en) * | 2013-07-25 | 2014-01-01 | 珠海格力电器股份有限公司 | Four-way valve and air conditioner |
| CN204678746U (en) * | 2015-05-04 | 2015-09-30 | 美的集团武汉制冷设备有限公司 | Three-position four-way valve and there is its air-conditioner |
-
2015
- 2015-05-04 CN CN201510220413.5A patent/CN106196763B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5779366A (en) * | 1980-10-31 | 1982-05-18 | Matsushita Electric Ind Co Ltd | Four-way valve of refrigerator |
| JPH11325634A (en) * | 1998-05-20 | 1999-11-26 | Fujitsu General Ltd | Four-way valve cooler of air conditioner |
| CN101084401A (en) * | 2004-09-08 | 2007-12-05 | 开利公司 | Hot gas bypass through four-way reversing valve |
| JP2008138995A (en) * | 2006-12-05 | 2008-06-19 | Hitachi Appliances Inc | Four-way selector valve and air-conditioner using the same |
| CN101205984A (en) * | 2006-12-19 | 2008-06-25 | 日立空调·家用电器株式会社 | Four-port conversion value and air conditioner using the same |
| KR20100026263A (en) * | 2008-08-29 | 2010-03-10 | 김영관 | Four way switching valve for heating and cooling system |
| CN203374885U (en) * | 2013-07-25 | 2014-01-01 | 珠海格力电器股份有限公司 | Four-way valve and air conditioner |
| CN204678746U (en) * | 2015-05-04 | 2015-09-30 | 美的集团武汉制冷设备有限公司 | Three-position four-way valve and there is its air-conditioner |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105419A (en) * | 2017-12-12 | 2018-06-01 | 珠海格力电器股份有限公司 | Four-way valve, air-conditioner set and control method |
| CN108105419B (en) * | 2017-12-12 | 2019-05-03 | 珠海格力电器股份有限公司 | Four-way valve, air-conditioner set and control method |
| CN108705984A (en) * | 2018-08-17 | 2018-10-26 | 福建工程学院 | A kind of device and method of confined space fire prevention and anti-suffocation |
| CN111442115A (en) * | 2020-03-19 | 2020-07-24 | 珠海格力电器股份有限公司 | Four-way valve and air conditioning system using same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106196763B (en) | 2018-06-19 |
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