CN109751417A - A kind of guide electromagnetic valve - Google Patents
A kind of guide electromagnetic valve Download PDFInfo
- Publication number
- CN109751417A CN109751417A CN201711060004.9A CN201711060004A CN109751417A CN 109751417 A CN109751417 A CN 109751417A CN 201711060004 A CN201711060004 A CN 201711060004A CN 109751417 A CN109751417 A CN 109751417A
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- valve
- plunger shaft
- piston
- sealing ring
- main body
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Abstract
The invention discloses ability strong guide electromagnetic valve is opened when a kind of low discharge.The guide electromagnetic valve includes main valve and pilot valve, there is import, plunger shaft and primary valve inside main valve, and the plunger shaft is internally provided with piston component, and the piston component includes piston main body and sealing ring；The piston main body can drive the sealing ring to slide axially in the plunger shaft, the cavity peripheral wall of plunger shaft described in the sealing ring resilient abutment, the plunger shaft is separated with sealing, cavity peripheral wall along the axial plunger shaft includes at least two sections, from the import to the primary valve direction, each section of the plunger shaft and the frictional force of the sealing ring are sequentially reduced；The guide electromagnetic valve rear end expansion valve flow becomes smaller, although the pressure difference at solenoid valve both ends becomes smaller, but the frictional resistance between sealing ring and plunger shaft becomes larger, therefore the state that guide electromagnetic valve still can be kept open, and can be effectively improved the ability that guide electromagnetic valve is kept it turned on.
Description
Technical field
The present invention relates to fluid control technology field, in particular to a kind of guide electromagnetic valve.
Background technique
Guide electromagnetic valve is the executive component for controlling fluid, it is played an important role in refrigeration systems, main
Effect are as follows: when restarting after compressor shutdown, the residual refrigerant (liquid) in evaporator enters compressor in order to prevent, causes
Compressor liquid hazards first close solenoid valve before compressor shutdown, store the refrigerant in system within the condenser.Refrigeration
When system is again started up, the liquid refrigerants in condenser enters after evaporator becomes gaseous state, enters back into inside compressor.
Summary of the invention
The present invention provides a kind of guide electromagnetic valve, including main valve and pilot valve, have inside the main valve import, plunger shaft and
Primary valve, the plunger shaft are internally provided with piston component, and the piston component includes piston main body and sealing ring；The piston
Main body can drive the sealing ring to slide axially in the plunger shaft, the chamber of plunger shaft described in the sealing ring resilient abutment
Body peripheral wall separates the plunger shaft with sealing, and the cavity peripheral wall along the axial plunger shaft includes at least two sections, from the import
To the primary valve direction, each section of the plunger shaft and the frictional force of the sealing ring are sequentially reduced.
In addition, the present invention still further provides a kind of guide electromagnetic valve, including main valve and pilot valve, inside the main valve
Have import, plunger shaft and a primary valve, the plunger shaft is internally provided with piston component, the piston component include piston main body and
Sealing ring；The piston main body can drive the sealing ring to slide axially in the plunger shaft, and the sealing ring elasticity is supported
By the cavity peripheral wall of the plunger shaft, the plunger shaft is separated with sealing, the cavity peripheral wall of the plunger shaft includes at least two sections,
From the import to the primary valve direction, the skin-friction coefficient of each section of the cavity peripheral wall is successively reduced.
In this way, guide electromagnetic valve rear end expansion valve flow becomes smaller, although the pressure difference at solenoid valve both ends becomes smaller, but sealing ring
Frictional resistance between plunger shaft becomes larger, therefore the state that guide electromagnetic valve still can be kept open, and can be effectively improved elder generation
The ability that guide electromagnetic valve is kept it turned on.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of guide electromagnetic valve in the prior art；
Fig. 2 is the cross-sectional view of guide electromagnetic valve other direction shown in Fig. 1；
Fig. 3 is the structural schematic diagram of the piston component of guide electromagnetic valve in an embodiment of the present invention；
Fig. 4 is the schematic cross-sectional view that guide electromagnetic valve primary valve is in close state in an embodiment of the present invention；
Fig. 5 is the schematic cross-sectional view that guide electromagnetic valve primary valve is in the open state in an embodiment of the present invention；
Fig. 6 is the partial schematic diagram of guide electromagnetic valve in an embodiment of the present invention.
Wherein, Fig. 1 is into Fig. 6:
Inlet tube 1-1, valve body 11, plunger shaft 1a, balance hole 1b, primary valve 1c, piston 12, piston ring 13, sealing-plug
14, piston spring 15, outlet 1-2；
Quiet core iron 21, iron core 22, returning spring 23, sealing-plug 24, pilot valve mouth 2a；
Piston component 100, piston main body 101, spring mounting seat 1011, sealing ring 102, elastic support member 103, locking
Briquetting 104, mating surface 105；
Plunger shaft 3a, primary valve 3c, returning spring 35.
Specific embodiment
Fig. 1 and Fig. 2 are please referred to, Fig. 1 is the structural schematic diagram of guide electromagnetic valve in the prior art；Fig. 2 is first shown in Fig. 1
The cross-sectional view of guide electromagnetic valve other direction.
Guide electromagnetic valve mainly includes valve body and coil two large divisions, and wherein valve body includes pilot valve and main valve again.Pilot valve
Including quiet core iron 21, returning spring 23, iron core 22, sealing-plug 24, pilot valve mouth 2a etc..Main valve includes inlet tube 1-1, valve body
11, the components such as primary valve 1c, outlet 1-2.Wherein valve body 11 is internally provided with fluid channel, balance hole 1b, plunger shaft
1a；Plunger shaft 1a is internally provided with piston spring 15 and piston 12, and sealing-plug 14 is provided on piston 12.
When the coil is de-energized, no current in coil, electromagnetic force caused by corresponding coil disappear, the dynamic iron core of such pilot valve
Under the action of returning spring, moves downward and then sealing-plug 14 closes pilot valve mouth.Input end fluid static balance on main valve
Hole 1b enters plunger shaft 1a, and direction is as shown in Figure 1, P2=P1 > P4 at this time, under the action of pressure and piston spring 15, piston
The sealing-plug 14 of end closes primary valve 1c, and solenoid valve is in closed valve state.
When the coil is energized, electric current is generated in coil and form electromagnetic force, move iron core and static iron core 21 is attracted, sealing-plug 14 is de-
From pilot valve mouth, pilot valve mouth is opened.Liquid in valve chamber enters outlet end by pilot valve mouth.At this point, the pressure P2 in valve chamber declines
And it is suitable with P4；Since the fluid passage in valve body 11 is connected with arrival end, therefore P3=P1, P3 are greater than P2, i.e., on the right side of piston
Pressure is greater than left side, and piston 12 moves downward under the action of difference force, and sealing-plug 14 is detached from primary valve 1c, and solenoid valve is opened.
Refrigeration system generally includes the components such as compressor, condenser, evaporator, expansion valve and guide electromagnetic valve, guide
Formula solenoid valve in refrigeration systems, is typically mounted at after condenser, before expansion valve, it acts as: after compressor shutdown
When restarting, the residual refrigerant (liquid) in evaporator enters compressor in order to prevent, leads to compressor liquid hazards, is compressing
Before machine is shut down, solenoid valve is first closed, stores the refrigerant in system within the condenser.When refrigeration system is again started up, condenser
In liquid refrigerants enter after evaporator becomes gaseous state, enter back into inside compressor.
Flow due to being installed on the expansion valve of guide electromagnetic valve rear end is much smaller than the standard-sized sheet flow of solenoid valve, works as outlet
End segment stream is more serious (flow is smaller), and pressure P4 is closer to P1, at this point, the pressure difference of 12 two sides of piston is more difficult to be formed.Solenoid valve
After unlatching, when the cooling capacity load of refrigeration system declines, expansion valve opening reduces, and flow reduces, the pressure difference at solenoid valve both ends
Reduce therewith.When the sum of the frictional force between pressure difference and piston 12 and the cavity inner wall of plunger shaft is less than 15 elastic force of piston spring
When, piston 12 moves right, and primary valve 1c is closed, and refrigeration system cannot keep low cooling capacity operation.
To solve the above-mentioned problems, main method is the ring installation 13 on piston 12 at present, is reduced in valve body 11
Leakage of the high pressure refrigerant into valve chamber in refrigerant passage makes inside valve chamber in refrigerant and channel pressure difference easy to form between refrigerant.
Piston ring 13 is to have cyclic structure jaggy, and piston 12 is circumferential to offer annular groove, and when installation, piston ring 13 is from notch position
Clamping is set to inside grooves.Because refrigerant temperature is widely different under different operating conditions, the heat expansion demand and piston of piston ring 13 are taken into account
The flexibility of movement has scheduled radial clearance between usual piston ring 13 and groove.
Since there are gap and piston ring 13, there are notch, refrigerants between piston ring 13 and the groove bottom wall of piston 12
High pressure refrigerant still can be leaked from above-mentioned gap and notch into valve chamber in channel, i.e. the low cooling capacity of guide electromagnetic valve cannot transport
Capable occurrence probability is still bigger.
In addition, it can be seen from the foregoing description that the material of piston ring 13 is in addition to meeting in the refrigerant contact course of work
Stability except, it is also necessary to meet assembly when have it is larger elasticity to clamp from its notch to piston, the system of piston ring 13
It is accordingly relatively high to make cost.
For the above technical problem in the prior art, the present invention has carried out further further investigation, proposes a kind of solution
The certainly technical solution of above-mentioned technical problem, is described in detail below.
It is with reference to the accompanying drawing and specific real in order to make those skilled in the art more fully understand technical solution of the present invention
Applying example, the present invention is described in further detail.
Fig. 3 to Fig. 6 is please referred to, Fig. 3 is that the structure of the piston component of guide electromagnetic valve in an embodiment of the present invention is shown
It is intended to；Fig. 4 is the schematic cross-sectional view that guide electromagnetic valve primary valve is in close state in an embodiment of the present invention；Fig. 5 is
Guide electromagnetic valve primary valve schematic cross-sectional view in the open state in an embodiment of the present invention；Fig. 6 is that the present invention is a kind of
The partial schematic diagram of guide electromagnetic valve in embodiment.
In a specific embodiment, the guide electromagnetic valve in the present invention includes main valve and pilot valve, wherein pilot valve
Structure is essentially identical with foregoing description, and this will not be repeated here.Herein mainly for the structure of piston component in main valve and plunger shaft
It is described, the other structures in main valve may refer to above description or the prior art.
The piston component 100 of guide electromagnetic valve provided by the present invention, is set to inside plunger shaft 3a comprising living
It fills in main body 101 and sealing ring 102, the outer surface of piston main body 101 is usually cylindrical surface, the rear end of piston main body 101 is formed
With the mating surface 105 of primary valve 3c sealing cooperation, piston main body 101 moves back and forth inside plunger shaft 3a and can close or beat
Open primary valve 3c.
Cavity peripheral wall along axial piston chamber 3a includes at least two sections, and from import to the direction primary valve 3c, plunger shaft 3a is each
Section and the frictional force of sealing ring 102 are sequentially reduced.As shown in fig. 6, be divided to by plunger shaft 3a for for two sections, the first hole section L1 and the
Two hole section L2, sealing ring 102 slide suffered frictional force in the first hole section of plunger shaft 3a L1 and are greater than sealing ring 102 in plunger shaft
The suffered frictional force of sliding in the second hole section of 3a L2.
In this way, guide electromagnetic valve rear end expansion valve flow becomes smaller, although the pressure difference at solenoid valve both ends becomes smaller, but sealing ring
Frictional resistance between 102 and plunger shaft 3a becomes larger, therefore the state that guide electromagnetic valve still can be kept open, and can effectively change
The ability that kind guide electromagnetic valve is kept it turned on.
Certainly, the cavity peripheral wall number of fragments of plunger shaft 3a is not limited to two sections, can be three sections or more multistage.
Realize that there are many mode of sealing ring 102 and plunger shaft 3a change frictional force, following present two ways:
First way are as follows: from import to the direction primary valve 3c, the internal diameter that each section of plunger shaft 3a is sequentially increased.With two-part
For, the internal diameter of the first hole section of plunger shaft 3a L1 is less than the internal diameter of the second hole section of plunger shaft 3a L2.
The second way are as follows: from import to the direction primary valve 3c, the coefficient of friction of each section surface of plunger shaft 3a is successively reduced,
Each section of inner surface of plunger shaft 3a can be processed as different roughness, different materials can also be coated in the inner surface of plunger shaft 3a
Material.
The cross section of cavity peripheral wall can be gradually increased for circle, both the first hole section L1 and the second hole section L2 internal diameter,
The maximum inner diameter of first hole section L1 is d1, and the maximum inner diameter d2 of the second hole section L2, the internal diameter of piston main body 101 is D, wherein
(d2-d1)/D range is 0.5%-5%.
It was verified that when the size of the first hole section L1 and the second hole section L2 are located in above range, guide electromagnetic valve
Unlatching ability with higher, performance reliability are preferable.
Wherein, the first hole section L1 and the second hole section L2 can be both designed as variable diameter hole section, can also be using one of them as variable diameter
At least partially variable diameter hole section in hole section, or both.Interior import without leave to the primary valve direction of variable diameter hole section becomes larger.
In this way, can further ensure can work normally when guide electromagnetic valve is in low flow state.
In the various embodiments described above, it can also pacify between the inner wall corresponding with plunger shaft 3a of the front end of piston component 100
Equipped with returning spring 35, when primary valve 3c is in opening procedure, compression reaction spring during piston component 100 is moved to the left
35, after coil blackout in pilot valve, under the restoring force effect of returning spring 35, piston component 100 is again against main valve
Mouth 3c, realizes the closing of primary valve 3c.
Sealing ring 102 in the present invention can specifically include fixed part and annular seal, fixed part and piston main body 101
Circumferential seal is fixed, elastic support member 103 press fitting in annular seal and piston main body 101 along axial internal perisporium it
Between, under the restoring force effect of elastic support member 103, outer peripheral surface and the plunger shaft 3a of annular seal are slidingly sealed；Annular
The outer peripheral surface of sealing is slidingly sealed with plunger shaft 3a along axial internal perisporium.
Pass through piston ring compared with piston clamping structure with the prior art, sealing ring in the piston component 100 in the present invention
102 annular seals that there is fixed part and be slidingly sealed with plunger shaft 3a, fixed part and 101 circumferential seal of piston main body,
Refrigerant is eliminated in this way from gap between the two circulation phenomenon, and pressure difference is more readily formed in the left and right sides of piston component 100, can be effective
The minimum movements pressure difference of raising guide electromagnetic valve and minimum holding pressure difference (flow)；And annular seal and piston main body
Elastic support member 103 is provided between 101, swell increment of such annular seal under refrigerant high temperature condition can pass through bullet
Property support member 103 deflection offset, do not influence between annular seal and plunger shaft 3a cooperate sliding, therefore the present invention mentioned
The guide electromagnetic valve of confession substantially increases low cooling capacity reliability of operation, and then ensures that refrigeration system works normally safely.
Realize that the structure of the sealing ring 102 of above-mentioned technical effect can specifically will introduce it herein below by diversified forms
A kind of middle specific structure.
In a kind of specific structure, fixed part is bonded fixation with the front end face of piston main body 101, and fixed part can be with ring junction
Structure, or enclosed construction, fixed part can be by being fixedly welded on the front end face of piston main body 101, naturally it is also possible to
It is fixedly connected with piston main body 101 by modes such as pin, screw or screw threads, hereinafter will be described in detail a kind of tool of fixed part
Body structure.
Annular seal be along the circumferentially outwardly extending bending edges of fixed part outer rim, flexible support portion be set to bending edges with
The space interior that piston main body 101 surrounds.
It should be noted that piston main body 101 is defined as rear end close to the position of the primary valve 3c of plunger shaft 3a herein
Face, correspondingly, the position far from primary valve 3c are defined as front end face.
With in the prior art piston main body 101 surface process mounting groove fixing seal ring 102 compared with, the present invention in
Sealing ring 102 is directly fixed on the front end face of piston main body 101 by fixed part, without processing on the surface of piston main body 101
Mounting groove, greatly reduces the processing technology of piston main body 101, and with notch set is set on sealing ring 102 in the prior art
The mounting means of dress is compared, and the sealing ring 102 in the present invention is directly fixed on the front end face of piston main body 101, for sealing ring
The aeroelastic requirements of 102 materials are relatively low, reduce the requirement to 102 material of sealing ring, and talent-selecting field is more extensive, use cost
Also it compares lower.
Piston component 100 in the present invention can also include locking clamping block 104, and the fixed part of sealing ring 102 passes through locking
Briquetting 104 is pressed in the front end face of piston main body 101.Locking clamping block 104 has the locking locked with piston main body 101
Portion, fixed part is positioned between locking clamping block 104 and the front end face of piston main body 101 by the coupling mechanism force of tight lock part, and is locked
The outer diameter for pressing block 104 is less than or equal to the outer diameter of piston.
Locking clamping block 104 or ring structure, naturally it is also possible to be other structures.It is with locking clamping block 104 below
Continue to introduce technical solution for ring structure.
Locking clamping block 104 in the various embodiments described above may include annular body and inner edge from annular body axially outward
The tube body of extension, tight lock part are the external thread part being formed on tube body, and the front end face of piston main body 101 has concave internal cavity, recessed
The internal thread part being provided with external thread part cooperation is fallen on the cavity peripheral wall of inner cavity.
It is fixed on piston main body 101 that is, locking clamping block 104 is connected through a screw thread.Not only facilitate sealing in this way
The installation of ring 102, and when the annular seal abrasion loss of sealing ring 102 is larger, locking clamping block 104 and piston can be dismantled
The replacement of sealing ring 102 can be realized in main body 101, easy to maintenance.
In a specific embodiment, elastic support member 103 can be cyclic annular spring assembly, cyclic annular spring assembly packet
Fixed ring and at least one annular reed are included, each annular reed is fixedly connected with the outer rim of fixed ring, and fixed ring passes through tight lock part
Coupling mechanism force be positioned between the fixed part of sealing ring 102 and the front end face of piston main body 101.
The positioning of sealing ring 102 can be realized by locking briquetting in the embodiment, while can realize flexible support portion again
The positioning of part 103 simplifies the structure of piston component 100.
In the various embodiments described above, it is also provided with spring mounting seat 1011 in the concave internal cavity of piston main body 101, is used for
It is coupled with the one end of piston returning spring 35.Spring mounting seat 1011 is usually the cylinder axially extended, replys bullet
Spring 35 is helical spring, and for the end sleeve of helical spring loaded on cylinder, above-mentioned setting spring mounting seat 1011 can guarantee spring
Stablize deformation when compression, make sealing ring 102 and piston main body 101 axially movable, it is ensured that the two and plunger shaft 3a circumferential gap
Unanimously.
In order to guarantee that sealing ring 102 is circumferentially uniformly contacted with plunger shaft 3a, sealing ring 102 is by following in the various embodiments described above
Mode is installed: transversal cross-section locating for the center of gravity of piston component 100 is located at annular seal and the piston main body 101
Be slidably matched contact-segment.
A kind of guide electromagnetic valve provided by the present invention and its piston component are described in detail above.Herein
Apply that a specific example illustrates the principle and implementation of the invention, the explanation of above example is only intended to help
Understand method and its core concept of the invention.It should be pointed out that for those skilled in the art, not taking off
, can be with several improvements and modifications are made to the present invention under the premise of from the principle of the invention, these improvement and modification also fall into this
In invention scope of protection of the claims.
Claims (10)
1. a kind of guide electromagnetic valve, including main valve and pilot valve, which is characterized in that have import, plunger shaft inside the main valve
(3a) and primary valve (3c), the plunger shaft (3a) are internally provided with piston component (100), and the piston component (100) includes
Piston main body (101) and sealing ring (102)；The piston main body (101) can drive the sealing ring (102) in the plunger shaft
It slides axially in (3a), the cavity peripheral wall of plunger shaft (3a) described in sealing ring (102) resilient abutment separates institute with sealing
Plunger shaft (3a) is stated, the cavity peripheral wall along the axial plunger shaft (3a) includes at least two sections, from the import to the main valve
Mouthful direction (3c), each section of the plunger shaft (3a) and the frictional force of the sealing ring (102) are sequentially reduced.
2. guide electromagnetic valve as described in claim 1, which is characterized in that the cross section of the cavity peripheral wall is circle, from
To the direction the primary valve (3c), the peripheral wall includes the first hole section and the second hole section, and first hole section for the import
Internal diameter be less than the internal diameter of second hole section, the maximum inner diameter of first hole section is d1, the most imperial palace of second hole section
Diameter is d2, the internal diameter D of the piston main body (101), wherein the range of (d2-d1)/D is 0.5%-5%.
3. guide electromagnetic valve as claimed in claim 2, which is characterized in that first hole section and/or second hole section
The two includes at least one section of variable diameter hole section, and the interior import described without leave to the primary valve direction of the variable diameter hole section becomes larger.
4. guide electromagnetic valve as described in any one of claims 1 to 3, which is characterized in that the piston component (100) is also wrapped
Include elastic support member (103)；The sealing ring (102) includes fixed part and annular seal, the fixed part and the work
Plug main body (101) circumferential seal is fixed, and elastic support member (103) press fitting is in the annular seal and the piston master
Body (101) between axial internal perisporium, the cavity peripheral wall of the outer peripheral surface of the annular seal and the plunger shaft (3a)
It is slidingly sealed.
5. guide electromagnetic valve as claimed in claim 4, which is characterized in that it further include locking clamping block (104), the locking pressure
Block (104) has the tight lock part locked with the piston main body (101), the locking that the fixed part passes through the tight lock part
Power is positioned between the locking clamping block (104) and the front end face of the piston main body (101), and the locking clamping block
(104) outer diameter is less than or equal to the outer diameter of the piston.
6. guide electromagnetic valve as claimed in claim 5, which is characterized in that the locking clamping block (104) includes annular body
With from the axially outwardly extending tube body in annular body inner edge, the tight lock part is the external screw thread being formed on the tube body
Portion, the front end face of the piston main body (101) have concave internal cavity, be provided on the cavity peripheral wall of the concave internal cavity with it is described
The internal thread part of external thread part cooperation.
7. guide electromagnetic valve as claimed in claim 6, which is characterized in that the elastic support member (103) is cyclic annular spring
Piece component, the ring-type spring assembly include fixed ring and at least one annular reed, and each annular reed is fixedly connected with
The outer rim of the fixed ring, the fixed ring are positioned at the fixation of the sealing ring (102) by the coupling mechanism force of the tight lock part
Between portion and the front end face of the piston main body (101).
8. guide electromagnetic valve as claimed in claim 7, which is characterized in that be provided with spring mounting seat in the concave internal cavity
(1011), it is coupled for the one end with piston returning spring (35).
9. piston component as claimed in claim 4, which is characterized in that transversal cross-section position locating for the center of gravity of the piston component
In the contact-segment that is slidably matched of the annular seal and the piston main body (101).
10. a kind of guide electromagnetic valve, including main valve and pilot valve, which is characterized in that have import, plunger shaft inside the main valve
(3a) and primary valve (3c), the plunger shaft (3a) are internally provided with piston component (100), and the piston component (100) includes
Piston main body (101) and sealing ring (102)；The piston main body (101) can drive the sealing ring (102) in the plunger shaft
It slides axially in (3a), the cavity peripheral wall of plunger shaft (3a) described in sealing ring (102) resilient abutment separates institute with sealing
It states plunger shaft (3a), the cavity peripheral wall of the plunger shaft includes at least two sections, from the import to the direction the primary valve (3c),
The skin-friction coefficient of each section of the cavity peripheral wall successively reduces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711060004.9A CN109751417B (en) | 2017-11-01 | 2017-11-01 | Pilot-operated type electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711060004.9A CN109751417B (en) | 2017-11-01 | 2017-11-01 | Pilot-operated type electromagnetic valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109751417A true CN109751417A (en) | 2019-05-14 |
| CN109751417B CN109751417B (en) | 2020-03-06 |
Family
ID=66399098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711060004.9A Active CN109751417B (en) | 2017-11-01 | 2017-11-01 | Pilot-operated type electromagnetic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109751417B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040261866A1 (en) * | 2003-06-30 | 2004-12-30 | Toyoda Koki Kabushiki Kaisha | High pressure valve for hydrogen gas and decompression device for hydrogen gas |
| US20090256092A1 (en) * | 2008-04-15 | 2009-10-15 | Robert Scott Nordstrom | Electrohydraulic valve having a solenoid actuator plunger with an armature and a bushing |
| CN102537480A (en) * | 2010-12-25 | 2012-07-04 | 浙江三花股份有限公司 | Pilot-operated solenoid valve |
| CN202402759U (en) * | 2011-01-25 | 2012-08-29 | 株式会社鹭宫制作所 | Electromagnetic valve and pilot-operated electromagnetic valve |
| CN103291957A (en) * | 2012-02-24 | 2013-09-11 | 浙江三花制冷集团有限公司 | Main valve of four-way reversing valve and four-way reversing valve provided with main valve |
| US20150034187A1 (en) * | 2012-01-23 | 2015-02-05 | Fmc Technologies, Inc. | Force multiplying solenoid valve |
| CN205534354U (en) * | 2016-04-01 | 2016-08-31 | 成都科盛石油科技有限公司 | A pressure regulating guide mechanism for in high pressure pneumatic system |
-
2017
- 2017-11-01 CN CN201711060004.9A patent/CN109751417B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040261866A1 (en) * | 2003-06-30 | 2004-12-30 | Toyoda Koki Kabushiki Kaisha | High pressure valve for hydrogen gas and decompression device for hydrogen gas |
| US20090256092A1 (en) * | 2008-04-15 | 2009-10-15 | Robert Scott Nordstrom | Electrohydraulic valve having a solenoid actuator plunger with an armature and a bushing |
| CN102537480A (en) * | 2010-12-25 | 2012-07-04 | 浙江三花股份有限公司 | Pilot-operated solenoid valve |
| CN102537480B (en) * | 2010-12-25 | 2015-08-12 | 浙江三花股份有限公司 | A kind of guide electromagnetic valve |
| CN202402759U (en) * | 2011-01-25 | 2012-08-29 | 株式会社鹭宫制作所 | Electromagnetic valve and pilot-operated electromagnetic valve |
| US20150034187A1 (en) * | 2012-01-23 | 2015-02-05 | Fmc Technologies, Inc. | Force multiplying solenoid valve |
| CN103291957A (en) * | 2012-02-24 | 2013-09-11 | 浙江三花制冷集团有限公司 | Main valve of four-way reversing valve and four-way reversing valve provided with main valve |
| CN205534354U (en) * | 2016-04-01 | 2016-08-31 | 成都科盛石油科技有限公司 | A pressure regulating guide mechanism for in high pressure pneumatic system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109751417B (en) | 2020-03-06 |
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