CN109990129A - Electromagnetic switching valve - Google Patents
Electromagnetic switching valve Download PDFInfo
- Publication number
- CN109990129A CN109990129A CN201711474948.0A CN201711474948A CN109990129A CN 109990129 A CN109990129 A CN 109990129A CN 201711474948 A CN201711474948 A CN 201711474948A CN 109990129 A CN109990129 A CN 109990129A
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- valve
- channel
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- 239000007769 metal material Substances 0.000 claims description 12
- 238000005553 drilling Methods 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 abstract description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 34
- 239000003507 refrigerant Substances 0.000 description 26
- 238000010586 diagram Methods 0.000 description 17
- 238000000034 method Methods 0.000 description 16
- 238000005057 refrigeration Methods 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 238000004378 air conditioning Methods 0.000 description 10
- 230000003068 static effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
Abstract
The invention discloses a kind of electromagnetic switching valves, which is characterized in that including main valve and pilot valve, the pilot valve includes the first pilot valve and the second pilot valve；First pilot valve includes mutually matched first valve body and first coil, and second pilot valve includes mutually matched second valve body and the second coil, and first valve body includes the first diversion division, and second valve body includes the second diversion division；The main valve includes main valve body, and the main valve body includes main valve chamber；It is fixedly connected respectively with first pilot valve and the second pilot valve in the two sides along center axis thereof direction of the main valve body；Using being press-fitted and being welded and fixed between first diversion division and the main valve body, is used between second diversion division and the main valve body and be press-fitted and be welded and fixed.Electromagnetic switching valve provided by the invention, it is possible to reduce the excessive existing potential risk to fail vulnerable to high pressure and vibration of the welding operation of adapter tube and welding position.
Description
Technical field
The present invention relates to refrigeration control fields, more particularly to a kind of electromagnetic switching valve.
Background technique
Referring to FIG. 1, Fig. 1 is a kind of structural schematic diagram of typical solenoid operated four-way valve of background technique.
As shown, conventional solenoid operated four-way valve is typically used for refrigeration system such as air-conditioning system comprising main valve 10' and
Pilot valve 20'；Main valve 10' includes valve body 11', and there is valve body 11' the exhaust pipe D connecting with exhaust outlet of compressor (to connect with higher-pressure region
Connect), the air intake duct S (being connect with low-pressure area) being connect with compressor air suction mouth, the adapter tube E being connect with indoor heat exchanger 30' and
The adapter tube C being connect with outdoor heat exchanger 40'；The both ends valve body 11' are equipped with end cap 12', are fixedly provided with valve seat 13', are additionally provided with logical
The sliding block 15' and piston 16' of connecting rod 14' drive, valve seat 13' contact and support slipper 15' are crossed, partner kinematic pair, piston
16' and valve body 11' partners kinematic pair.
The small valve body of pilot valve 20' is installed with the capillary d connecting with the exhaust pipe D of main valve 10', the i.e. inner cavity of pilot valve 20'
Also it is accordingly connected to the higher-pressure region of main valve；There are three valve ports for the small valve seat tool of pilot valve 20', and are installed with respectively and master according to from left to right
Capillary e, the capillary s, capillary c of the right end cap connection of the left end cap, air intake duct S, main valve 10' of valve 10'；Pilot valve 20''s
Small valve body right end is installed with casing, and outside of sleeve is equipped with electromagnetic coil 50'.
In a kind of working condition, when refrigeration system needs to freeze, electromagnetic coil 50' no power, the core of the inner cavity pilot valve 20'
Iron drives sliding bowl to be located at leftward position, communicates capillary e and capillary s, capillary c and hair under the effect of returning spring power
Tubule d is communicated, so that the left chamber of main valve 10' is low-pressure area, right chamber is higher-pressure region, forms pressure between the left and right chamber of main valve 10'
Difference pushes sliding block 15' and piston 16' to left side, communicates adapter tube E and air intake duct S, and exhaust pipe D is communicated with adapter tube C, at this point, system
The circulation path of refrigerant in cooling system are as follows: exhaust outlet of compressor → exhaust pipe D → 11 valve chambers of valve body → adapter tube C → outdoor heat exchanger
40' → restricting element 60' → indoor heat exchanger 30' → adapter tube E → the inner cavity sliding block 15' → air intake duct S → compressor air suction mouth, system
Cooling system is in refrigeration work state；
When refrigeration system needs to heat, electromagnetic coil 50' is powered, and the core iron of the inner cavity pilot valve 20' overcomes returning spring
Active force drives sliding bowl to move to right, and communicates capillary c and capillary s, and capillary e and capillary d are communicated, thus main valve 10'
Left chamber is higher-pressure region, and right chamber is low-pressure area, forms pressure difference between the left and right chamber of main valve 10', sliding block 15' and piston 16' are pushed away
To the right, adapter tube C and air intake duct S are communicated, exhaust pipe D is communicated with adapter tube E, at this point, in refrigeration system refrigerant circulation path
Are as follows: exhaust outlet of compressor → exhaust pipe D → 11 valve chambers of valve body → adapter tube E → indoor heat exchanger 30' → restricting element 60' → outdoor
Heat exchanger 40' → adapter tube C → the inner cavity sliding block 15' → air intake duct S → compressor air suction mouth, refrigeration system are in heating work shape
State.
As above, the commutation of main valve 10' can be realized by the collective effect of pilot valve 20' and electromagnetic coil 50' etc., to switch
The switching of refrigeration system heating working condition and refrigeration work state is realized in the flow direction of refrigerant.
Above-mentioned solenoid operated four-way valve is suitable for the refrigeration system of domestic air conditioning, but with the development of technology, electromagnetic switching valve
Application field constantly extend, such as in the field of air conditioning for automobiles, it is also desirable to use electromagnetic switching valve to carry out refrigerant flow direction
Switching, the especially common carbon dioxide refrigerant of air conditioning for automobiles, use condition is different from normal domestic use air-conditioning, if directly will be upper
It states solenoid operated four-way valve to be applied in air conditioning for automobiles, is unable to satisfy relevant work condition.
Therefore, a kind of electromagnetic switching valve how is designed, the automotive air-conditioning system of high temperature and pressure refrigerant can be suitable for, be
Those skilled in the art's technical problem urgently to be resolved.
Summary of the invention
The object of the present invention is to provide a kind of electromagnetic switching valve of automotive air-conditioning system that can be suitably used for high temperature and pressure refrigerant,
For this purpose, the invention adopts the following technical scheme:
Electromagnetic switching valve, which is characterized in that including main valve and pilot valve, the pilot valve includes the first pilot valve and the
Two pilot valves；
First pilot valve includes the first valve body and the first coil that matches with first valve body, and described second
Pilot valve includes the second valve body and the second coil for matching with second valve body, and first valve body includes the first water conservancy diversion
Portion, second valve body include the second diversion division；
The main valve includes main valve body, and the main valve body includes main valve chamber；In the main valve body along center axis thereof side
To two sides be respectively fixedly connected with first pilot valve and the second pilot valve；
Between first diversion division and the main valve body using be press-fitted and be welded and fixed, second diversion division with it is described
It is used between main valve body and is press-fitted and is welded and fixed.
Based on the above technical solution, some technical characteristics can also be further improved or is refined, from
And following technical solution is formed, following each technical characteristics both can be separately from can also combine applicable:
The main valve body forms integral structure using metal material, and in the inside straight forming of the main valve body or adds
Work forms first runner, second flow channel, third flow channel, the 4th runner, and the second flow channel, third flow channel, the 4th runner are located at
The same side, the first runner are located at opposite side.
First diversion division forms integral structure using metal material, and offers the first flow-guiding channel and second lead
Circulation road；Second diversion division forms integral structure using metal material, and offers third honeycomb duct and the 4th water conservancy diversion
Channel.
First flow-guiding channel, second flow-guiding channel, the third flow-guiding channel, the 4th flow-guiding channel are equal
It is composed of two or more beeline channels, the beeline channel is formed by the way of drilling.
First flow-guiding channel is connect with the third flow channel of the main valve body by the first connecting tube, the 4th water conservancy diversion
Channel is connect with the third flow channel of the main valve body by the second connecting tube.
First diversion division is provided with external screw thread, and second diversion division is provided with external screw thread, and the two of the main valve body
Side is respectively arranged with corresponding internal screw thread, and first diversion division, second diversion division and the main valve body pass through screw thread
Implement to be welded and fixed with merging.
Electromagnetic switching valve provided by the invention, using press-fitting between the first diversion division and the main valve body of the first pilot valve
And be welded and fixed, it is used between the second diversion division and the main valve body of the second pilot valve and is press-fitted and is welded and fixed.Without such as carrying on the back
Is connected using adapter tube documented by scape technology, it is possible to reduce the welding operation of adapter tube and welding position it is excessive present in it is easy
The potential risk to be failed by high pressure and vibration.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of typical solenoid operated four-way valve of background technique；
Fig. 2 is the first working state structure schematic diagram of electromagnetic switching valve provided by first embodiment of the invention；
Fig. 3 is the second working state structure schematic diagram of electromagnetic switching valve provided by first embodiment of the invention；
Fig. 4 is electromagnetic switching valve appearance diagram provided by first embodiment of the invention；
Fig. 5 is the structural schematic diagram of link assembly provided by another embodiment of the present invention；
Fig. 6 is piston structure schematic diagram provided by another embodiment of the present invention；
Fig. 7 is electromagnetic switching valve structural schematic diagram provided by another embodiment of the present invention.
Specific embodiment
In order that those skilled in the art will better understand the technical solution of the present invention, with reference to the accompanying drawing and it is specific real
The mode of applying is described in further detail.
Fig. 2, Fig. 3, Fig. 4 are please referred to, Fig. 2 provides the first working condition of electromagnetic switching valve by first embodiment of the invention
Structural schematic diagram, Fig. 3 are the second working state structure schematic diagram of electromagnetic switching valve provided by first embodiment of the invention, figure
4 be electromagnetic switching valve appearance diagram provided by first embodiment of the invention.
Electromagnetic switching valve includes main valve and pilot valve.Main valve 1 includes main valve body 11, and main valve body 11 can be using metal if not
The modes such as the casting of rust steel or forging process from strand, and main valve body 11 can be integral structure, cooperate with pilot valve and fix, thus
Main valve chamber 111 is formed in the inside of main valve body.And along main valve chamber 111 to extending first runner 101, second outside main valve body
Runner 102, third flow channel 103, the 4th runner 104.Second flow channel 102, third flow channel 103, the 4th runner 104 are located at same
Side, first runner 101 are then located at opposite side.Wherein, first runner 101 (can be pressed with the high-pressure side in refrigeration system
The exhaust outlet of contracting machine) communicate, third flow channel 103 with the low-pressure side (i.e. the air entry of compressor is connected to side) in refrigeration system
It communicates, in this way, refrigerant when work at first runner 101 remains high temperature and pressure, and the refrigerant at third flow channel 103 begins
Relative low temperature low pressure is remained eventually.
Main valve body 11 uses metal material moulding and directly forms four runners of four runners or processed formation, with background
Technology is compared, without the mode of valve body and adapter tube welding, reduce welding position influenced by factors such as high pressure and vibrations and
Existing failure hidden danger, overall structural strength is higher, works more reliable.
In main valve chamber 111, it is provided with the main valve seat 12 being fixedly connected with main valve body 11, main valve seat 12 is correspondingly provided with
One through-hole 121, the second through-hole 122, third through-hole 123, main valve seat 12 have the flat part 124 slided for sliding block, and above-mentioned the
One through-hole 121, the second through-hole 122, third through-hole 123 run through flat part 124, and respectively with second flow channel 102, third flow channel
103, the 4th runner 104 is connected.First through hole 121, the second through-hole 122, third through-hole 123 either straight section through-hole,
Section be can also be in step-like not isometrical through-hole, or be the through-hole of irregular shape, need to only meet can be by main valve chamber 111
Each corresponding site is penetrated through with second flow channel 102, third flow channel 103, the 4th runner 104 respectively.
In main valve chamber 111, sliding block 13, connecting rod 14 and two pistons 15 are provided with, wherein sliding block 13 includes a plane
Portion is bonded for the flat part 124 with main valve seat, and can under the drive of connecting rod 14 along flat part 124 in respective range
Interior opposite sliding, there are two operating positions for piston tool, and sliding block 13 further includes the recess portion to concave from planar portions, recess portion and master
Valve seat cooperatively forms the chamber that can be used for being connected, as shown in figure 3, third flow channel 103, the 4th runner 104 can pass through 13 and of sliding block
The chamber connection that main valve seat is formed.As shown in Fig. 2, second can be made when sliding block 13 is located at leftward position (the first operating position)
Road 102 is not connected to main valve chamber 111, and the chamber for forming second flow channel 102 with sliding block 13 and main valve seat 12 is connected to；At this time
Four runners 104 are connected with main valve chamber 111, while being also connected indirectly with first runner 101, are defined as the first operating position at this time.
After 13 Slideslip to the right of sliding block, third flow channel 103 and the 4th runner 104 can be connected, while first runner 101 passes through master
Valve chamber 111 and second flow channel 102 are connected.It is defined as the second operating position at this time.Connecting rod 14 and the piston 15 at 14 both ends of connecting rod are solid
Fixed connection, piston 15 include the first piston 151 positioned at 111 left side of main valve chamber and the second piston on the right side of main valve chamber
152, main valve chamber 111 is divided into three relatively independent spaces by first piston 151 and second piston 152.
The two sides of the central axial direction along main valve chamber 111 of main valve body 11 be separately installed with the first pilot valve 21 with
And second pilot valve 31, the structure of the first pilot valve 21 and the second pilot valve 31 can be set to identical.
First pilot valve 21 includes the first valve body 211 and first coil 212, and the first valve body 211 includes the first static iron core
2111, the first dynamic iron core 2112, the first diversion division 2113, the first dynamic iron core 2112 are connected with the first closure part 2114, and
The first returning spring 2118, the first static iron core 2111 and first set are provided between one dynamic iron core 2112 and the first static iron core 2111
Cylinder 2119 is fixedly connected, and the first dynamic iron core 2112 can be in 2119 internal slide of first sleeve, when first sleeve 2119 and first
When diversion division 2113 is fixed, it is formed the first pilot valve cavity 2119a between the two；It, can in the movement of the first dynamic iron core 2112
To drive the movement of the first closure part 2114, in 212 no power of first coil, the first closure part 2114 blocks the first diversion division
2113 the first valve port portion 2115.
Second pilot valve 31 includes the second valve body 311 and the second coil 312, and the second valve body 311 includes the second static iron core
3111, the second dynamic iron core 3112, the second diversion division 3113, the second dynamic iron core 3112 are connected with the second closure part 3114, and
It is provided with the second returning spring 3118 between two dynamic iron cores 3112 and the second static iron core 3111, the second static iron core 3111 and second set
Cylinder 3119 is fixedly connected, and the second dynamic iron core 3112 can be in 3119 internal slide of second sleeve, when second sleeve 3119 and second
When diversion division 3113 is fixed, it is formed the second pilot valve cavity 3119a between the two；It, can in the movement of the second dynamic iron core 3112
To drive the movement of the second closure part 3114, in the second 312 no power of coil, the second closure part 3114 blocks the second diversion division
3113 the second valve port portion 3115.
First diversion division 2113 and the second diversion division 3113 are sealedly and fixedly connected respectively in the two sides of main valve body 11, such as can be with
By being welded and fixed, main valve chamber 111 is just divided into three parts by such first piston 151 and second piston 152: where first
The first cavity 1111, structure between first piston 151 and second piston 152 are constituted between diversion division 2113 and first piston 151
At the second cavity 1112, third cavity 1113 is constituted between second piston 152 and the second diversion division 3113.It needs to illustrate
It is that the space size of the first cavity 1111 and third cavity 1113 can change with the relative movement of piston 15.
First diversion division 2113 can be integrally formed using metal material such as stainless steel or machine-shaping, and offers the
One valve port portion 2115, and the first flow-guiding channel 2116 and the second flow-guiding channel inside the first diversion division 2113 are set
2117, the first flow-guiding channel 2116 and the second flow-guiding channel 2117 are real by the first pilot valve cavity 2119a, the first valve port portion 2115
It is now connected to, one end of the second flow-guiding channel 2117 is connected to the first pilot valve cavity 2119a, and the other end of the second flow-guiding channel 2117 exists
Electromagnetic switching valve is connected to the first cavity 1111 when being in the second operating position.It, can be using modes such as drillings in specific processing
Form above-mentioned first flow-guiding channel 2116 and the second flow-guiding channel 2117.In the present embodiment, the first flow-guiding channel 2116 with
Connection, the other end of the first flow-guiding channel 2116 and the first valve port portion are realized by the first connecting tube 22 between third flow channel 103
2115 connections, 22 main body of the first connecting tube can be located at the outside of main valve body 11.
It should be noted that the first flow-guiding channel 2116 and the second flow-guiding channel 2117 can be in the first diversion divisions
Opened up on 2113 ontology, the present invention not to channel it is specific towards, open up or the combination of plurality of passages carry out
Limitation, it is only necessary to which meet the following conditions: one end of the second flow-guiding channel 2117 is in the second work shape in electromagnetic switching valve
It is connected when state with the first cavity 1111.First flow-guiding channel 2116, the second flow-guiding channel 2117 can be straight by two or more
Line passage is composed, which can be formed by the way of drilling.
In this way, when the first dynamic iron core 2112 drives the first closure part 2114 to abut with the first valve port portion 2115 to block the
When one valve port portion 2115, dissengaged positions is between the first flow-guiding channel 2116 and the second flow-guiding channel 2117.
Second diversion division 3113 can be integrally formed using metal material or processed molding, and offers the second valve port portion
3115, and third flow-guiding channel 3116 and the 4th flow-guiding channel 3117 inside the second diversion division 3113, third are set
Flow-guiding channel 3116 is connected to the 4th flow-guiding channel 3117 by the second valve port portion 3115, the second pilot valve cavity 3119a realization.?
When specific processing, above-mentioned third flow-guiding channel 3116 and the 4th flow-guiding channel 3117 can be formed using modes such as drillings.?
In the present embodiment, it is connected between the 4th flow-guiding channel 3117 and third flow channel 103 by the realization of the second connecting tube 32, the 4th water conservancy diversion
3117 other end of channel is connected to the second valve port portion 3115, and 32 main body of the second connecting tube can be located at the outside of main valve body 11.Third
One end of flow-guiding channel 3116 is connected to the second pilot valve cavity 3119a, and the other end of third flow-guiding channel 3116 is in the first work shape
Third cavity 1113 is connected to when state.
For the prefixes such as " first, second, third, fourth " in the names of the parts in this specification, it is only for be convenient for
The naming method distinguishing different components and introducing, and specific precedence is not present, for example the second diversion division 3113 is arranged
There are third flow-guiding channel 3116 and the 4th flow-guiding channel, is not meant to that the second diversion division 3113 must be additionally provided with first simultaneously
Flow-guiding channel or the second flow-guiding channel.
It should be noted that third flow-guiding channel 3116 and the 4th flow-guiding channel 3117 can be in the second diversion divisions
Opened up on 3113 ontology, the present invention not to channel it is specific towards, open up or the combination of plurality of passages carry out
Limitation, it is only necessary to which meet the following conditions: one end of third flow-guiding channel 3116 is in the first working condition and third cavity
1113 are connected, and the other end of third flow-guiding channel 3116 is connected to the second pilot valve cavity 3119a；4th flow-guiding channel 3117
One end is connected with the second valve port portion 3115, and the third flow channel 103 that the other end is then arranged with main valve body 111 is directly or indirectly connected
It is logical.Third flow-guiding channel 3116, the 4th flow-guiding channel 3117 can be composed of two articles or more beeline channels, and the straight line is logical
Road can be formed by the way of drilling.
In this way, when the second dynamic iron core 3112 drives the second closure part 3114 to abut with the second valve port portion 3115 to block the
When two valve port portions 3115, dissengaged positions is between third flow-guiding channel 3116 and the 4th flow-guiding channel 3117.
First diversion division 2113 can be fixed with main valve body 11 using press-fitting and by the way of welding, during fabrication, first
The first flow-guiding channel 2116 and the second flow-guiding channel 2117 are processed on the first diversion division 2113, then by the first diversion division
2113 are packed into one end of main valve body, then implement to be welded and fixed, at this point, one end of the second flow-guiding channel 2117 is located at main valve body
Second flow-guiding channel 2117 is connected to by outside by way of welding the first connecting tube 22 with the third flow channel 103 of main valve body.
Similarly, the second diversion division 3113 can use same manufacturing method, and be fixed with main valve body 11, and use the second connection
The third flow channel 103 of the connection of pipe 32 the 4th flow-guiding channel 3117 and main valve body.
As a kind of interchangeable assembly method, external thread structure can also be set on the first diversion division 2113, and
Corresponding internal thread structure is set on main valve body 11, then by the first diversion division 2113 by way of being threadedly engaged and main valve body
11 is fixed, then implements welding.Similarly, the second diversion division 3113 can also using be threadedly coupled and implement welding by the way of and master
Valve body 11 is fixed.
Referring to figure 5., Fig. 5 is link assembly structural schematic diagram provided by another embodiment of the present invention.
Connecting rod 14 includes body part 140 and the first connecting portion 141 for being connected to 140 both ends of body part and the second connection
Portion 142.Body part 140 is substantially plate-like, and in the side of plate setting bending part as reinforcement part, body part 140 can make
With plate forming, holding section 1401 is offered at the middle part of body part 140, for fastening with sliding block 13, in this way, working as connecting rod 14
When mobile, so that it may act as the displacement of left and right directions with movable slider 13.In order to reduce the pressure loss, the two of holding section 1401
Notch section 1402 can also be arranged in side, and the number of notch section 1402 is unlimited, the convenience based on processing, in the present embodiment notch section
1402 quantity is 2, the setting of notch section 1402, so that about 140 two sides of body part have the more area that runs through, reduction
Connecting rod to the refrigerant in the second cavity 1112 flow caused by resistance.
First connecting portion 141 and second connecting portion 142 have been respectively fixedly connected at the both ends of body part 140.Wherein,
One interconnecting piece 141 can be used for being fixedly connected with first piston 151, and second connecting portion 142 can be used for and the fixed company of second piston 152
It connects.Specifically, the first mounting portion 1403 and the second mounting portion can be respectively set at the both ends of the body part 140 of plate
1404, specifically when processing, it can be formed by the way of drilling.
First connecting portion 141 include substantially in oblate plate-like first connecting portion ontology 1411 and with first connecting portion sheet
Body 1411 is fixedly connected or in the first integrated auxiliary section 1412.First connecting portion ontology 1411 is in annulus in the present embodiment
Remove opposite two parts composition on the basis of shape, the height of such first connecting portion ontology 1411 can reduce i.e. substantially relatively
In flat-shaped, annulus the distance between of the height less than two sides.It first auxiliary section 1412 both can be with first connecting portion ontology
1411 are manufactured by the integrally formed mode of material, can also be then each using welding, tight fit connection etc. using manufacture respectively
The means that kind is fixedly connected make one.First auxiliary section 1412 includes the first concave part 1414 and the first hole portion
1413, the first concave part 1414 is substantially in flat and adaptable with the shape of 140 end of con-rod only portion；First hole portion
1413 run through the first auxiliary section 1412, and the shape for the first mounting portion 1403 being arranged with body part 140 is adapted.In this way,
When installation, the first concave part 1414 can be inserted into the end of body part 140, and make the first mounting portion 1403 and the first hole portion
1413 alignment, then pass through the first hole portion 1413 and the first mounting portion 1403 using the first fixed part 143.First fixed part
143 are made of integral material, after the assembly is completed can be first by first specifically in assembly in the thick intermediate thin state in both ends
Fixed part 143 is arranged to the thick shape in one end, then passes through the first hole portion 1413 and the first mounting portion 1403, and makes first to consolidate
One end deformation that portion 143 passes through is determined, so that con-rod only portion 140 and first connecting portion 141 are fixed.
Above-mentioned first hole portion 1413 and the quantity of the first mounting portion 1403 can be set to 2, such bonding strength
It is opposite one higher.
Equally, as symmetrical structure, second connecting portion 142 also includes the second connecting portion ontology for being substantially in oblate plate-like
It 1421 and is fixedly connected with second connecting portion ontology 1421 or integrally formed second auxiliary section 1422.That is the second auxiliary section
1422 can both be manufactured with second connecting portion ontology 1421 by the integrally formed mode of material, can also be right using manufacture respectively
One is made using the various means being fixedly connected such as welding, tight fit connection afterwards.Second auxiliary section 1422 includes second
Concave part 1424 and the second hole portion 1423, the second concave part 1424 substantially in flat, and with 140 both ends of con-rod only portion
Shape is adapted or the shape adaptation of the height of the second concave part 1424 and 140 both ends of depth con-rod only portion；Second hole portion
1423 run through the second auxiliary section 1422, and the shape for the second mounting portion 1404 being arranged with body part 140 is adapted.In this way,
When installation, the second concave part 1424 can be inserted into the end of body part 140, and make the second mounting portion 1404 and the second hole portion
1423 alignment, then pass through the second hole portion 1423 and the second mounting portion 1404, the second fixed part using the second fixed part 144
144 are made of integral material, after the assembly is completed can be first by second specifically in assembly in the thick intermediate thin state in both ends
Fixed part 144 is arranged to the thick shape in one end, then passes through the second hole portion 1423 and the second mounting portion 1404, and by making
One end deformation that two fixed parts 144 pass through, so that con-rod only portion 140 and second connecting portion 142 are fixed.This fixation
The mode of connection has the advantages that not needing welding, reduces the environmental pollution in process.
It should be added that above-mentioned second hole portion 1423 and the quantity of the second mounting portion 1404 can be set to
2, such bonding strength is higher.
First connecting portion 141 is provided with the first threaded portion 145, and second connecting portion 142 is provided with the second threaded portion 146, the
For being fixedly connected with first piston 151, the second threaded portion 146 is fixedly connected for second piston 152 for one threaded portion 145.
Connecting rod 14 described in this embodiment includes body part 140, first connecting portion 141, second connecting portion 142, then
It is fixedly connected by the first fixed part 143 and the second fixed part 144 as an entirety.Simultaneously in first connecting portion sheet
The first threaded portion 145 and the second threaded portion 146 is arranged in body 1411 and second connecting portion ontology 1421, in this way when piston and company
When bar screw connects, receiving impacting with high pressure in head is relatively small during the work time for screw, effectively prevents main valve body internal pressure
The hidden danger such as toner screw occur when power is excessive.Meanwhile such structure setting, the first threaded portion 145 and the second threaded portion 146
Random length required for being processed into and quantity, to reach enough bonding strengths.Embodiment out shown in Fig. 5
In, the quantity of the first threaded portion 145 and the second threaded portion 146 is 4,4 are not limited in practical application certainly,
It can be 4 or more.In addition, connecting rod black box uniform force in action process, first connecting portion 141, second connecting portion
142 is relatively large with the contact surface of piston element, and stability is more preferable.
It should be noted that the embodiment of above-mentioned connecting rod 14 is not limited in electromagnetic switching valve used in the present invention,
It will be appreciated by those skilled in the art that the composite structure of connecting rod and piston for main valve body, is that one kind can be replaced integrally
Scheme, link mechanism provided in this embodiment can be suitably used for the environment of operating condition more severe high pressure and vibration, natural
Also it can be applied to the more superior environment of operating condition.It also means that, above-mentioned link mechanism is also applicable to household
The ordinary electromagnetic four-way valve product in the fields such as air-conditioning, such as in technical solution documented by background technique.
Piston 15 includes first piston 151 and second piston 152, the first connecting portion of first piston 151 and connecting rod 14
141 is fixed, and the second connecting portion 142 of second piston 152 and connecting rod 14 is fixed.
Fig. 6 is please referred to, Fig. 6 is piston structure schematic diagram provided by another embodiment of the present invention.
First piston 151 includes piston pad 1513 and piston tabletting 1515, and piston cup 1514 is arranged in piston pad
Between 1513 and piston tabletting 1515, wherein piston pad 1513 and piston tabletting 1515 are substantially in disk form and have
The plate of mounting hole, piston cup 1514 have piston bowl body 1514a substantially in the form of annular discs and roll over along piston bowl body
The piston sliding part 1514b of curved extension, after piston element is assembled in electromagnetic switching valve, connecting rod 14 is moved with piston 15
When, piston sliding part 1514b will be slided along the peripheral wall of main valve chamber 111, to change the first cavity 1111 with third cavity
1113 space size.
Piston spring piece 1518 is additionally provided between spring pressuring plate 1515 and piston cup 1514, piston spring piece 1518 can
To provide support force to piston sliding part 1514b.
Piston pad 1513, piston tabletting 1515, piston cup 1514 and piston spring piece 1518 are provided with intermediate logical
Hole, and be fixed by bushing 1517.Specifically, in the present embodiment, bushing 1517 has substantially tubular bushing
Ontology 1517a, and the first extension 1517b and the second extension 1517c are formed in the edge part at its both ends.After mounting,
By the first extension 1517b and the second extension 1517c by piston pad 1513, piston tabletting 1515, piston cup 1514, living
Plug spring leaf 1518 is fixed together.Wherein, the first extension 1517b and the second extension 1517c can be with bush bodies
1517a is process using integral material, for example, first carrying out crimping bending in one end of bushing 1517a, makes its deformation, is formed
First extension 1517b, and bushing 1517 is packed into piston pad 1513, piston tabletting 1515, piston cup 1514 and piston
In the intermediate throughholes of spring leaf 1518, crimping bending then is carried out to the other end of bushing again, makes its deformation, second is formed and extends
Portion 1517b, to achieve the purpose that fixed.As alternative scheme, it can also be shaped the second extension 1517c, assembled
The first extension 1517b is reshaped later.
Certainly, the first extension 1517b and the second extension 1517c can also carry out welding side using individual components
Formula be fixed on bush body 1517a or the first extension 1517b and the second extension 1517c in one using one plus
Work, another one is welded using individual part, it will be appreciated by those skilled in the art that opening in the technology that the present embodiment provides
Under showing, these alternative technological means equally can be realized the purpose of the present invention.
At the same time it can also further making further Structural Transformation to piston tabletting or piston pad, such as in piston
A tabletting step 1515a is arranged in the position of tabletting 1515 contacted with the second extension 1517c, so that the second extension
1517c is abutted against with tabletting step 1515a；Or it is set at the position of piston pad 1513 contacted with the first extension 1517b
A gasket step 1513a is set, so that the first extension 1517b is abutted against with gasket step 1513a, as shown in Figure 6.
It should be noted that above-mentioned tabletting step 1515a and gasket step 1513a can select a setting, it can also be simultaneously
Setting.
First piston 151 further includes fixing seat 1511, and fixing seat 1511 is fixedly connected with piston pad 1513, fixing seat
1511 have the fixing seat interconnecting piece 1511a being fixedly connected with piston pad 1513, specifically can be using the side welded or riveted
Formula is fixed, or is fixed using screw.Fixing seat 1511 further includes fixing seat body part 1511b, and tapered plug 1512
Set up separately and set in the inside of fixing seat body part 1511b, and there is part to stretch out fixing seat 1511, for when the movement of first piston 151
It when to the first operating position, is abutted against with the first diversion division 2113, and blocks the first flow-guiding channel 2116.In bushing 1517
Portion is additionally provided with tapered plug spring 1516, provides buffer function for tapered plug 1512.In this way, tapered plug can be along fixing seat 1511
It is central axial to be displaced, but cannot integrally deviate from fixing seat 1511.
After first piston 151 manufactures, by screw fixation method, by the fixed company in one end of first piston and connecting rod 14
It connects.Specifically, the first connecting portion 141 by the piston tabletting of first piston 151 and connecting rod abuts against, and is then screwed into using screw
The first threaded portion being arranged in first connecting portion 141, so that first piston 151 and connecting rod 14 are fixed as an entirety.
The description of structure is carried out by taking first piston 151 as an example above, second piston 152 can use and first piston
151 identical structures, those skilled in the art are on the basis of above disclosure, similarly it will be appreciated that second piston 152
Structure, and second piston 152 and the second connecting portion 142 of connecting rod are fixed.
It should be noted that the embodiment of above-mentioned piston 15 (including first piston 151 and second piston 152) also not office
It is limited in electromagnetic switching valve documented by first embodiment of the invention, it will be appreciated by those skilled in the art that connecting rod and piston
Composite structure is a kind of scheme that can integrally replace for main valve body, and piston structure provided in this embodiment can be applicable in
In the environment of operating condition more severe high pressure and vibration, the more superior environment of operating condition naturally also can be applied to
In.It also meaning that, above-mentioned piston structure is also applicable to the ordinary electromagnetic four-way valve product in the fields such as domestic air conditioning, than
In the technical solution as documented by background technique.
Fig. 7 is please referred to, Fig. 7 is electromagnetic switching valve structural schematic diagram provided by another embodiment of the present invention.
In order to avoid specification is excessively tediously long, in the description of the present embodiment, component identical for appended drawing reference can be with
Referring to the description of other embodiments above, no longer it is developed in details, difference is described herein only.
Be formed with inside main valve body 11 main valve chamber 111 and first runner 101, second flow channel 102, third flow channel 103,
4th runner 104；Second flow channel 102, third flow channel 103, the 4th runner 104 are located at the same side, and first runner 101 is then located at phase
Anti- side.First runner 101 can communicate, third flow channel with the high-pressure side (i.e. the exhaust outlet of compressor) in refrigeration system
103 with the low-pressure side (i.e. the air entry of compressor is connected to side) in refrigeration system to communicate, in this way, first runner when work
Refrigerant at 101 remains high temperature and pressure, and the refrigerant at third flow channel 103 remains relative low temperature low pressure.
Main valve body 11 uses metal material moulding and directly forms four runners of four runners or processed formation, with background
Technology is compared, without the mode of valve body and adapter tube welding, reduce welding position influenced by factors such as high pressure and vibrations and
Existing failure hidden danger, overall structural strength is higher, works more reliable.
Main valve chamber 111 is provided with the main valve seat 12 being fixedly connected with main valve body 11, the sliding block that can be slided on main valve seat 12
13, and the connecting rod 14 with the movement of movable slider 13, the first piston 151 and second piston 152 that are fixed on 14 both ends of connecting rod.
First pilot valve 21 includes the first diversion division 2113, and the second pilot valve 31 includes the second diversion division 3113.First leads
Stream portion 2113 can be integrally formed using metal material such as stainless steel or machine-shaping, and offers the first valve port portion 2115,
And the first flow-guiding channel 2116 and the second flow-guiding channel 2117 inside the first diversion division 2113 are set.Second diversion division
3113 can also be using metal material such as stainless steel integrated molding or machine-shaping, and offers the second valve port portion 3115, with
And third flow-guiding channel 3116 and the 4th flow-guiding channel 3117 inside the second diversion division 3113 are set.
The internal structure of above-mentioned first pilot valve 21 and the second pilot valve 31 is referred to above other embodiments
Description understood that details are not described herein again.
Main valve body 11 is processed from strand using metal such as stainless steel or the modes such as aluminum material casting or forging, main valve body
11 can be integral structure, and be also provided with the first main valve flow-guiding channel 112 and the second main valve flow-guiding channel inside it
113, the first main valve flow-guiding channel 112 and the second main valve flow-guiding channel 113 can be formed by two using modes such as drillings
Beeline channel more than item is composed.
Wherein, one end of the first main valve flow-guiding channel 112 and 2116 phase of the first flow-guiding channel on the first diversion division 2113
Connection, the other end are then connected with the third flow channel 103 on main valve body 11.Equally；One end of second main valve flow-guiding channel 113 with
The 4th flow-guiding channel 3117 on second diversion division 2113 is connected, the other end then with 103 phase of third flow channel on main valve body 11
Connection.
First diversion division 2113 can be fixed with main valve body 11 using press-fitting and by the way of welding, during fabrication, first
The first flow-guiding channel 2116 and the second flow-guiding channel 2117 are processed on the first diversion division 2113, then by the first diversion division
2113 are packed into one end of main valve body, and make one end of the first flow-guiding channel 2116 and the first main valve flow-guiding channel of main valve body
112 are aligned and are connected to, and then implement to be welded and fixed.Similarly, the second diversion division 3113 can also be using press-fitting simultaneously with main valve body 11
The mode of welding is fixed, and during fabrication, third flow-guiding channel 3116 and the 4th is first processed on the second diversion division 3113
Second diversion division 3113, is then packed into the other end of main valve body by flow-guiding channel 3117, and makes the 4th flow-guiding channel 3117
One end is aligned and is connected to the second main valve flow-guiding channel 113 of main valve body, then implements to be welded and fixed.
Due to being provided with the first main valve flow-guiding channel 112 and the second main valve flow-guiding channel 113 on main valve body, no longer need to
Connecting tube is arranged in the external of main valve body, keeps the structure of entire product more compact, and the welding position for reducing connecting tube exists
Failure risk under high pressure and vibration working environment.
Electromagnetic switching valve working principle provided by the above embodiment is briefly described as follows:
1, first coil 212 is powered, 312 no power of the second coil.
Second coil, 312 no power, does not generate electromagnetic force, and the second dynamic iron core 3112 is in the second returning spring 3118 at this time
Elastic force effect is lower to drive the second closure part 3114 to block the second valve port portion 3115, so that third flow-guiding channel 3116 and the 4th water conservancy diversion
Channel 3117 is in dissengaged positions.
First coil 212 is powered, and generates electromagnetic force, the first dynamic iron core 2112 is made to overcome the bullet of the first returning spring 2118
Power is attracted with the first static iron core 2111, to drive the first closure part 2114 far from the first valve port portion 2115, the first water conservancy diversion at this time
Channel 2116 and the second flow-guiding channel 2117 are in connected state.Since the second flow-guiding channel 2117 is by the first connecting tube 22
It is connected to third flow channel 103, and third flow channel 103 is connected with the air entry of compressor, therefore the first pilot valve
Inner cavity is in low-pressure state, in the case where the first cavity 1111 is connected to the inner cavity of the first pilot valve, in the first cavity 1111
It is also at low-pressure state, and the second cavity 1112 is connected with first runner 101, the exhaust outlet of first runner 101 and compressor
It is connected, therefore the second cavity 1112 is in high pressure conditions, under the action of difference force, pushes first piston 151 to diagram
Left side is mobile, until the tapered plug of first piston 151 and the first diversion division 2113 abut against and block the second flow-guiding channel 2117, from
And it is mobile with movable slider 13, and cover the first through hole 121 of valve seat.At this point, first runner 101 passes through the second cavity 1112 and the
Four runners 103 are connected.Electromagnetic switching valve is in the first working condition.
Refrigerant flow direction inside electromagnetic switching valve at this time are as follows: the high temperature and pressure refrigerant of compressor discharge is through first runner 101
Into the second cavity 1112, then flowed out from the 4th runner 104.
2,212 no power of first coil, the second coil 312 are powered.
212 no power of first coil, does not generate electromagnetic force, and the first dynamic iron core 2112 is in the first returning spring 2118 at this time
Elastic force effect is lower to drive the first closure part 2114 to block the first valve port portion 2115, so that the first flow-guiding channel 2116 and the second water conservancy diversion
Channel 2117 is in dissengaged positions.
Second coil 312 is powered, and generates electromagnetic force, the second dynamic iron core 3112 is made to overcome the bullet of the second returning spring 3118
Power is attracted with the second static iron core 3111, to drive the second closure part 3114 far from the second valve port portion 3115, third water conservancy diversion at this time
Channel 3116 and the 4th flow-guiding channel 3117 are in connected state.Since the 4th flow-guiding channel 3117 is by the second connecting tube 32
It is connected to third flow channel 103, and third flow channel 103 is to be connected with the air entry of compressor, therefore pass through third water conservancy diversion
The third cavity 1113 that channel 3116 is connected to the inner cavity of the second pilot valve is also at low-pressure state, and the second cavity 1112 and first
Runner 101 is connected, and first runner 101 is connected with the exhaust outlet of compressor, therefore the second cavity 1112 is in high pressure conditions,
Under the action of difference force, push piston and with movable slider 13 to the mobile tapered plug until second piston 152 in the right side of diagram with
Second diversion division 3113 abuts against and blocks third flow-guiding channel 3116, and sliding block recess portion is cooperatively formed with main valve seat and can be used at this time
It is connected to simultaneously with third flow channel 103, the 4th runner 104 in the chamber of conducting, so that third flow channel 103 and the 4th runner 104 be made to connect
It is logical, while first runner 101 is connected by the second cavity 1112 with second flow channel 102.Electromagnetic switching valve is in the second work
State.
Refrigerant flows at this time are as follows: and the high temperature and pressure refrigerant of compressor discharge enters the second cavity 1112 through first runner 101,
Then it is flowed out from second flow channel 102, and from the inflow electromagnetic switching valve of third flow channel 103 after throttle valve, heat exchanger, and from
4th runner 104 outflows back to compressor, forms a circulation.
The refrigerant flow direction of electromagnetic switching valve at work is described with a kind of specific embodiment above, with background technique
Documented refrigerant flow direction switching has differences, and flows to requirement to be suitable for the refrigerant of vehicle-mounted refrigerating system.Certainly, this field skill
Art personnel, can also without creative efforts, to second flow channel under the technical inspiration that the present embodiment provides
102, third flow channel 103, the 4th runner 104 the position that opens up reset, and make sliding block 13 move on to left side first
When operating position, second flow channel 102 and third flow channel 103 are connected, when sliding block 13 is moved to right side, in the second operating position
When, third flow channel 103 and the 4th runner 104 are connected, to form new embodiment.The electromagnetic switching valve of the new embodiment
Working principle are as follows:
1, first coil 212 is powered, 312 no power of the second coil.
Second coil, 312 no power, does not generate electromagnetic force, and the second dynamic iron core 3112 is in the second returning spring 3118 at this time
Elastic force effect is lower to drive the second closure part 3114 to block the second valve port portion 3115, so that third flow-guiding channel 3116 and the 4th water conservancy diversion
Channel 3117 is in dissengaged positions.
First coil 212 is powered, and generates electromagnetic force, the first dynamic iron core 2112 is made to overcome the bullet of the first returning spring 2118
Power is attracted with the first static iron core 2111, to drive the first closure part 2114 far from the first valve port portion 2115, the first water conservancy diversion at this time
Channel 2116 and the second flow-guiding channel 2117 are in connected state.Since the second flow-guiding channel 2117 is by the first connecting tube 22
It is connected to third flow channel 103, and third flow channel 103 is connected with the air entry of compressor, therefore the first pilot valve
Inner cavity is in low-pressure state, in the case where the first cavity 1111 is connected to the inner cavity of the first pilot valve, in the first cavity 1111
It is also at low-pressure state, and the second cavity 1112 is connected with first runner 101, the exhaust outlet of first runner 101 and compressor
It is connected, therefore the second cavity 1112 is in high pressure conditions, under the action of difference force, pushes the sidesway to the left of first piston 151
It is dynamic, until tapered plug and the first diversion division 2113 of first piston 151 abut against and block the second flow-guiding channel 2117, to drive
Sliding block 13 is moved to the left, and sliding block recess portion and main valve seat cooperatively form the chamber that can be used for being connected for second flow channel 102 and third stream
Road 103 is connected, at this point, first runner 101 is connected by the second cavity 1112 with the 4th runner 103.
Refrigerant flows at this time are as follows: and the high temperature and pressure refrigerant of compressor discharge enters the second cavity 1112 through first runner 101,
Then it is flowed out from the 4th runner 104, and from the inflow electromagnetic switching valve of third flow channel 103 after throttle valve, heat exchanger, and from
Second flow channel 102 outflows back to compressor, forms a circulation.
2,212 no power of first coil, the second coil 312 are powered.
212 no power of first coil, does not generate electromagnetic force, and the first dynamic iron core 2112 is in the first returning spring 2118 at this time
Elastic force effect is lower to drive the first closure part 2114 to block the first valve port portion 2115, so that the first flow-guiding channel 2116 and the second water conservancy diversion
Channel 2117 is in dissengaged positions.
Second coil 312 is powered, and generates electromagnetic force, the second dynamic iron core 3112 is made to overcome the bullet of the second returning spring 3118
Power is attracted with the second static iron core 3111, to drive the second closure part 3114 far from the second valve port portion 3115, third water conservancy diversion at this time
Channel 3116 and the 4th flow-guiding channel 3117 are in connected state.Since the 4th flow-guiding channel 3117 is by the second connecting tube 32
It is connected to third flow channel 103, and third flow channel 103 is to be connected with the air entry of compressor, therefore pass through third water conservancy diversion
The third cavity 1113 that channel 3116 is connected to the inner cavity of the second pilot valve is also at low-pressure state, and the second cavity 1112 and first
Runner 101 is connected, and first runner 101 is connected with the exhaust outlet of compressor, therefore the second cavity 1112 is in high pressure conditions,
Under the action of difference force, pushes piston and moved to the right with movable slider 13 until the tapered plug of second piston 152 is led with second
Stream portion 3113 abuts against and blocks third flow-guiding channel 3116, and sliding block recess portion is cooperatively formed with main valve seat at this time can be used for being connected
Chamber simultaneously be connected to third flow channel 103, the 4th runner 104, to make third flow channel 103 be connected to the 4th runner 104, simultaneously
First runner 101 is connected by the second cavity 1112 with second flow channel 102.Electromagnetic switching valve is in the second working condition.
Refrigerant flows at this time are as follows: and the high temperature and pressure refrigerant of compressor discharge enters the second cavity 1112 through first runner 101,
Then it is flowed out from second flow channel 102, and from the inflow electromagnetic switching valve of third flow channel 103 after throttle valve, heat exchanger, and from
4th runner 104 outflows back to compressor, forms a circulation.
The refrigerant flow handoff procedure of the electromagnetic switching valve of the new embodiment is similar to documented by background technique.
" connection " described in present specification and claims refers to connection physically, that is, allows to flow refrigerant from channel
In flow through or certain specified conditions under can flow through, even if a certain item is connected to channel temporarily disconnected (such as first block
When portion 2114 blocks the first valve port portion 2115), it nor affects on the first flow-guiding channel 2116 and passes through with the second flow-guiding channel 2117
It sets up described in this specification " connection " in the first valve port portion 2115；Only it is impossible between space or runner to beginning to whole at two
Just regarded in the case where passing through refrigerant as " not being connected to ".
Here, noun of locality up, down, left and right are defined on the basis of diagram shown in Figure of description, are intended merely to manage
Solution and statement are convenient, should not limit the protection scope of the application.
Electromagnetic switching valve provided by the present invention is described in detail above.Specific case used herein is to this
The principle and embodiment of invention is expounded, method of the invention that the above embodiments are only used to help understand and
Its core concept.It should be pointed out that for those skilled in the art, in the premise for not departing from the principle of the invention
Under, it can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection of the claims in the present invention
In range.
Claims (6)
1. electromagnetic switching valve, which is characterized in that including main valve and pilot valve, the pilot valve include the first pilot valve (21) and
Second pilot valve (31)；
First pilot valve includes mutually matched first valve body (211) and matches with first valve body (211)
First coil (212), second pilot valve include mutually matched second valve body (311) and with second valve body
(311) the second coil (312) matched, first valve body (211) include the first diversion division (2113), second valve body
(311) include the second diversion division (3113)；
The main valve includes main valve body (11), and the main valve body (11) includes main valve chamber (111)；On the edge of the main valve body (11)
The two sides in center axis thereof direction are respectively fixedly connected with first pilot valve (21) and the second pilot valve (31)；
It is used between first diversion division (2113) and the main valve body (11) and is press-fitted and is welded and fixed, second diversion division
(3113) it is used between the main valve body (11) and is press-fitted and is welded and fixed.
2. electromagnetic switching valve as described in claim 1, which is characterized in that the main valve body (11) forms one using metal material
Body structure, and in the inside straight forming of the main valve body (11) or machine-shaping first runner (101), second flow channel
(102), third flow channel (103), the 4th runner (104), the second flow channel (102), third flow channel (103), the 4th runner
(104) it is located at the same side, the first runner (101) is located at opposite side.
3. electromagnetic switching valve as described in claim 1, which is characterized in that first diversion division (2113) uses metal material
Integral structure is formed, and offers the first flow-guiding channel (2116) and the second flow-guiding channel (2117)；Second diversion division
(3113) integral structure is formed using metal material, and offers third honeycomb duct (3116) and the 4th flow-guiding channel
(3117)。
4. electromagnetic switching valve as claimed in claim 3, which is characterized in that first flow-guiding channel (2116), described second
Flow-guiding channel (2117), the third flow-guiding channel (3116), the 4th flow-guiding channel (3117) are by two articles or more straight lines
Combination of channels forms, and the beeline channel is formed by the way of drilling.
5. electromagnetic switching valve as claimed in claim 3, which is characterized in that first flow-guiding channel (2116) and the main valve
The third flow channel (103) of body (11) is connected by the first connecting tube (22), the 4th flow-guiding channel (3117) and the main valve
The third flow channel (103) of body (11) is connected by the second connecting tube (32).
6. electromagnetic switching valve as described in claim 1, which is characterized in that first diversion division (2113) is provided with outer spiral shell
Line, second diversion division (3113) are provided with external screw thread, and the two sides of the main valve body (11) are respectively arranged with spiral shell in corresponding
Line, first diversion division (2113), second diversion division (3113) are with the main valve body (11) by being threadedly engaged simultaneously
Implementation is welded and fixed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711474948.0A CN109990129A (en) | 2017-12-29 | 2017-12-29 | Electromagnetic switching valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711474948.0A CN109990129A (en) | 2017-12-29 | 2017-12-29 | Electromagnetic switching valve |
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| CN109990129A true CN109990129A (en) | 2019-07-09 |
Family
ID=67109593
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022161457A1 (en) * | 2021-02-01 | 2022-08-04 | 浙江三花智能控制股份有限公司 | Electromagnetic switching valve |
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