CN102691820B - A kind of bidirectional electromagnetic valve - Google Patents
A kind of bidirectional electromagnetic valve Download PDFInfo
- Publication number
- CN102691820B CN102691820B CN201110069844.8A CN201110069844A CN102691820B CN 102691820 B CN102691820 B CN 102691820B CN 201110069844 A CN201110069844 A CN 201110069844A CN 102691820 B CN102691820 B CN 102691820B
- Authority
- CN
- China
- Prior art keywords
- axial
- valve
- hole
- radial
- branch road
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
-
- 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
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
- F16K31/406—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston
- F16K31/408—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston the discharge being effected through the piston and being blockable by an electrically-actuated member making contact with the piston
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a kind of bidirectional electromagnetic valve, including the valve seat (1) being provided with primary valve (11) and valve pocket, described valve pocket is provided with piston (2), it is epicoele (12) and cavity of resorption (13) that described piston (2) separates described valve pocket, and the upper end of described piston (2) is provided with pilot valve mouth (21)；There is between the circumferential side wall of described piston (2) with the inwall of corresponding described valve pocket passage gaps (14)；Described piston (2) is provided with can by the described epicoele (12) the first branch road to horizontal adapter (31) one end one-way conduction and can by the described epicoele (12) the second branch road to vertical joint pipe (32) one end one-way conduction；Being additionally provided with on described piston (2) can by described vertical joint pipe (32) one end to the 3rd branch road of described epicoele (12) one-way conduction.The structural design of this bidirectional electromagnetic valve can substantially reduce the quantity of parts, simplifies assembly technology and reduces manufacturing cost.
Description
Technical field
The present invention relates to Solenoid Valve Technology field, particularly to a kind of bidirectional electromagnetic valve.
Background technology
General electromagnetic valve, due to the restriction of structure, can only one-way flow, cut-off.Within air-conditioning systems, particularly in heat pump, coolant refrigeration, heat time the flow direction contrary, thus general single-pass electromagnetic valve need with check valve with the use of.But, bidirectional electromagnetic valve can realize two-way admittance, cut-off, because of without coordinating check valve, it is possible to directly use in system pipeline, thus have comparatively significantly cost advantage.
In the prior art, Japan Patent " Unexamined Patent 6-101780 " discloses a kind of bidirectional electromagnetic valve, and specifically refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of a kind of bidirectional electromagnetic valve in prior art；Fig. 2 is the structural representation of the first non-return valve of bidirectional electromagnetic valve in Fig. 1 and the second non-return valve；Fig. 3 is the partial structurtes schematic diagram that the piston of bidirectional electromagnetic valve in Fig. 1, the first non-return valve and the second non-return valve are constituted.
The work process of the bidirectional electromagnetic valve in the prior art is as follows:
Forward closure state: as shown in figures 1 and 3, when the coil 4 ' 4 of electromagnetic valve is not powered on, when horizontal adapter 3 ' 2 logical high pressure coolant, high pressure coolant enters internal piston through the balance pipe 2 ' 3 of piston 2 ', high pressure coolant opens the first pilot valve mouth 2 ' 1 sealed by the first non-return valve 5 ' 1, entering the epicoele 1 ' 2 of the valve seat 1 ' of piston 2 ' top, high pressure coolant is filled with whole epicoele 1 ' 2；Now, owing to the second non-return valve 5 ' 2 is under the effect of epicoele 1 ' 2 mesohigh coolant, seals the second pilot valve mouth 2 ' 2, thus epicoele 1 ' 2 is high-pressure side；Now, owing in epicoele 1 ' 2, the lifting surface area of piston 2 ' is more than the lifting surface area of piston 2 ' in the cavity of resorption 1 ' 3 of valve seat 1 ', and owing to vertical joint pipe 3 ' 1 one end is low-pressure end, thus under the effect of pressure differential, piston 2 ' closes the primary valve 1 ' 1 of valve seat 1 ', closed electromagnetic valve.
Forward opening: as shown in figures 1 and 3, when electromagnetic valve coil 4 ' 4 is energized, dynamic iron core 4 ' 2 in sleeve pipe 4 ' 1 moves upward under the effect of electromagnetic valve power, with static iron core 4 ' 3 adhesive, dynamic iron core 4 ' 2 moves upward after one section of idle stroke, driving support 5 ' to move upward, support 5 ' and then drive the second non-return valve 5 ' 2 open the second pilot valve mouth 2 ' 2；Now, high pressure coolant passes through the second pilot valve mouth 2 ' 2, and then washes nonreturn valve core 2 ' 4 open, enters vertical joint pipe 3 ' 1 one end, owing to the circulation area of the balance pipe 2 ' 3 on piston 2 ' is less than the circulation area of the second pilot valve mouth 2 ' 2, thus the pressure in epicoele 1 ' 2 declines, form low-pressure end, now cavity of resorption 1 ' 3 is high-pressure side, under the effect of pressure differential, piston 2 ' moves upward, and opens primary valve 1 ' 1, and electromagnetic valve is opened.
Reverse closure state: when coil 4 ' 4 is not powered on, as shown in figures 1 and 3, when horizontal adapter 3 ' 2 logical high pressure coolant, high pressure coolant enters the second pilot valve mouth 2 ' 2 by the aperture on the nonreturn valve core 2 ' 4 of piston 2 ' inside, and open the second pilot valve mouth 2 ' 2 sealed by the second non-return valve 5 ' 2, enter epicoele 1 ' 2, now high pressure coolant is filled with whole epicoele 1 ' 2, and owing to the first non-return valve 5 ' 1 closes the first pilot valve mouth 2 ' 1 under the effect of epicoele 1 ' 2 mesohigh coolant, thus epicoele 1 ' 2 forms high-pressure side；Now, epicoele 1 ' 2 and vertical joint pipe 3 ' 1 one end are high-pressure side, but due in epicoele 1 ' 2 lifting surface area of piston 2 ' more than the lifting surface area of vertical joint pipe 3 ' 1 determined piston 2 ' of one end primary valve 1 ' 1, and owing to cavity of resorption 1 ' 3 and horizontal adapter 3 ' 2 one end are low-pressure end, thus under the effect of pressure differential, piston 2 ' closes primary valve 1 ' 1, closed electromagnetic valve.
Reverse opening: when coil 4 ' 4 is energized, as shown in figures 1 and 3, dynamic iron core 4 ' 2 moves upward under the effect of electromagnetic valve power, with static iron core 4 ' 32 adhesive, dynamic core iron 4 ' 2 moves upward after one section of idle stroke, drives support 5 ' to move upward, and support 5 ' and then drive the first non-return valve 5 ' 1 open the first pilot valve mouth 2 ' 1, high pressure coolant in epicoele 1 ' 2, through the first pilot valve mouth 2 ' 1 and balance pipe 2 ' 3, flows into horizontal adapter 3 ' 2 one end；Now, owing to the circulation area of the aperture on nonreturn valve core 2 ' 4 is less than the circulation area of balance pipe 2 ' 3, thus the pressure in epicoele 1 ' 2 declines, form low-pressure end, now vertical joint pipe 3 ' 1 one end is still high-pressure side, and under the effect of pressure differential, piston 2 ' moves upward, opening primary valve 1 ' 1, electromagnetic valve is opened.
But, above-mentioned electromagnetic valve of the prior art has the drawback that
First, in order to realize electromagnetic valve bidirectional open or closedown, piston 2 ' is provided with two pilot valve mouths: the first pilot valve mouth 2 ' 1 and the second pilot valve mouth 2 ' 2, correspondingly, it is provided with two non-return valves: the first non-return valve 5 ' 1 and the second non-return valve 5 ' 2 at support 5 ', thus resulting in parts more, structure is complex；
Second, in order to ensure that two non-return valves coordinate with corresponding pilot valve mouth respectively, it is necessary to prevent support 5 ' from circumferentially rotating；In consideration of it, as shown in Figure 2, it is necessary on support 5 ', it is provided with two location bars 5 ' 3, is provided with on piston accordingly simultaneously and positions the hole, two location that bar 5 ' 3 coordinates, thus preventing support 5 ' from rotating.But this kind of structural design to not only result in parts more, and difficulty of processing is big, and assembly technology is complicated, and manufacturing cost is higher；
3rd, by above-mentioned two point defects it can be seen that the electromagnetic valve parts in the prior art are more, assembly technology is complicated, and assembly difficulty is big, and the reliability thus resulting in work is relatively poor.
Summary of the invention
The technical problem to be solved in the present invention is for providing a kind of bidirectional electromagnetic valve, and the structural design of this bidirectional electromagnetic valve can substantially reduce the quantity of parts on the one hand, simplifies assembly technology, reduces manufacturing cost, can improve the reliability of work on the other hand.
For solving above-mentioned technical problem, the present invention provides a kind of bidirectional electromagnetic valve, including the valve seat being provided with primary valve and valve pocket, described valve pocket is provided with the piston coordinated with described primary valve, it is epicoele and cavity of resorption that described piston separates described valve pocket, and the upper end of described piston is provided with the pilot valve mouth being turned on and off by pilot valve components；Described bidirectional electromagnetic valve also includes the horizontal adapter connected with described cavity of resorption and the vertical joint pipe connected by described primary valve with cavity of resorption；Between the circumferential side wall of described piston with the inwall of corresponding described valve pocket, there is passage gaps；Described piston is provided with and all connects with described pilot valve mouth and can by the described epicoele the first branch road to described horizontal adapter one end one-way conduction and can by the described epicoele the second branch road to described vertical joint pipe one end one-way conduction；Being additionally provided with on described piston can by described vertical joint pipe one end to the 3rd branch road of described epicoele one-way conduction；Described pilot valve mouth and the described second determined circulation area of branch road are more than circulation area more than described 3rd branch road of the circulation area of described passage gaps, described pilot valve mouth and the described first determined circulation area of branch road.
Preferably, described piston offers the pilot passage connected with described pilot valve mouth vertically further, described pilot valve mouth by described pilot passage respectively with described first branch road and described second branch road one-way conduction.
Preferably, described first branch road includes the first radial hole, and described first radial hole one end connects with described pilot passage, and its other end is communicated with the second radial hole that aperture becomes big；It is provided with radial sealing surfaces between described second radial hole and described first radial hole, described second radial hole is provided with the radial seal body sealing this radial sealing surfaces；Described second radial hole is provided with radial stop parts away from one end of described radial sealing surfaces, and described radial stop parts are communicated with the radial direction through hole of described second radial hole and described horizontal adapter one end.
Preferably, described second radial hole is round platform hole, and the miner diameter end in this round platform hole connects described radial sealing surfaces, and its bigger diameter end is connected to the 3rd radial hole that aperture becomes big, and described radial stop parts are assemblied in the 3rd radial hole.
Preferably, described second branch road includes the axial cavity connected with described pilot passage, is provided with the first axial seal face between this axial cavity and described pilot passage, is provided with the first axial seal body sealing this first axial seal face in described axial cavity；Described axial cavity is provided with the first axial retention parts away from the one end in described first axial seal face, and these the first axial retention parts are communicated with the first axially extending bore of described axial cavity and described vertical joint pipe one end.
Preferably, described first axial seal body is nonreturn valve core, and described nonreturn valve core is provided with the spool radial hole and spool axial hole that are interconnected, and described spool radial hole connects with described axial cavity, and described spool axial hole connects with described first axially extending bore.
Preferably, described axial cavity is connected to, away from the one end in described first axial seal face, the first axial hole that aperture becomes big, and described piston is provided with caulking part, and described first axial retention parts are riveted in described first axial hole by described caulking part.
Preferably, described 3rd branch road includes the second axial hole connected with described vertical joint pipe one end, and the other end in this second axial hole is communicated with the 3rd axial hole that aperture becomes big；It is provided with the second axial seal face between second axial hole and the 3rd axial hole, and the 3rd axial hole is provided with the second axial seal body sealing this second axial seal face；Described 3rd axial hole is provided with the second axial retention parts away from the one end in described second axial seal face, and these the second axial retention parts are communicated with second axially extending bore in the 3rd axial hole and described epicoele.
Preferably, described piston offers inclined hole further, and described second axial hole is connected with described vertical joint pipe one end by described inclined hole.
Preferably, described pilot valve components includes the sleeve pipe being connected on described valve seat, is provided with dynamic iron core in described sleeve pipe, and one end of described dynamic iron core is connected to the pilot valve spheroid sealing or opening described pilot valve mouth, its other end is connected to static iron core by elastomeric element, described sleeve pipe be provided externally with coil.
On the basis of existing technology, between the circumferential side wall of the piston of bidirectional electromagnetic valve provided by the present invention with the inwall of corresponding described valve pocket, there is passage gaps；Described piston is provided with and all connects with described pilot valve mouth and can by the described epicoele the first branch road to described horizontal adapter one end one-way conduction and can by the described epicoele the second branch road to described vertical joint pipe one end one-way conduction；Being additionally provided with on described piston can by described vertical joint pipe one end to the 3rd branch road of described epicoele one-way conduction；Described pilot valve mouth and the described second determined circulation area of branch road are more than circulation area more than described 3rd branch road of the circulation area of described passage gaps, described pilot valve mouth and the described first determined circulation area of branch road.
When the coil of bidirectional electromagnetic valve is not powered on, when high pressure coolant is entered the cavity of resorption of valve pocket by horizontal adapter, first branch road is closed, coolant enters the epicoele being positioned at above piston by described passage gaps, under the effect of high pressure coolant and gravity, pilot valve components closes pilot valve mouth, now owing to epicoele and cavity of resorption are high-pressure side, and due in epicoele the lifting surface area of piston more than the lifting surface area of piston in cavity of resorption, and owing to vertical joint pipe one end is low-pressure end, thus move downward at the effect lower piston of pressure differential, close primary valve.When the coil electricity of bidirectional electromagnetic valve, under the influence of a magnetic field, pilot valve components opens pilot valve mouth, and the high pressure coolant of upper intracavity flows into vertical joint pipe one end of low pressure by pilot valve mouth and the second branch road, owing to pilot valve mouth and the determined circulation area of the second branch road are more than the circulation area of described passage gaps, thus the pressure in epicoele declines, forming low-pressure end, and cavity of resorption is high-pressure side, piston moves upward under the effect of cavity of resorption and the pressure differential of epicoele, opening primary valve, electromagnetic valve is opened.During coil blackout, magnetic field disappears, and pilot valve components resets thus closing pilot valve mouth, and now the coolant in epicoele does not flow to vertical joint pipe one end again through pilot valve mouth and the second branch road, thus the pressure in epicoele rises, until equal with the pressure of the high pressure coolant of horizontal adapter one end；Now, piston upper chamber and cavity of resorption are high-pressure side, but in epicoele, the lifting surface area of piston is more than the lifting surface area of piston in cavity of resorption, and owing to vertical joint pipe one end is low-pressure end, thus under the effect of pressure differential, piston moves downward, and closes primary valve, closed electromagnetic valve.
When the coil of bidirectional electromagnetic valve is not powered on, when high pressure coolant is entered by vertical joint pipe one end, second branch road is closed, high pressure coolant enters epicoele by the 3rd branch road, now pilot valve components closes pilot valve mouth under the effect of high pressure coolant and gravity, epicoele and vertical joint pipe one end are high-pressure side, but due in epicoele the lifting surface area of piston more than the lifting surface area of vertical joint pipe one end determined piston of primary valve, and owing to horizontal adapter one end and cavity of resorption are low-pressure end, thus under the effect of pressure differential, piston closes primary valve, closed electromagnetic valve.When described coil electricity, under the influence of a magnetic field, pilot valve components opens pilot valve mouth, and the high pressure coolant in epicoele flows to horizontal adapter one end of low pressure by pilot valve mouth and the first branch road, owing to pilot valve mouth and the determined circulation area of the first branch road are more than the circulation area of the 3rd branch road, thus the pressure in epicoele declines, it is called low-pressure end, now under the effect of pressure differential, piston upwards, opening primary valve, electromagnetic valve is opened.When the coil is de-energized, magnetic field disappears, pilot valve components resets thus closing pilot valve mouth, now the high pressure coolant in epicoele can not flow to horizontal adapter one end of low pressure again through pilot valve mouth and the first branch road, thus pressure rises, form the high-pressure side equal with vertical joint pipe one end, but due in epicoele the lifting surface area of piston more than the lifting surface area of vertical joint pipe one end determined piston of primary valve, and owing to horizontal adapter one end and cavity of resorption are low-pressure end, thus under the effect of pressure differential, piston closes primary valve, closed electromagnetic valve.
Relative to the structural design of two pilot valve mouths of prior art and two non-return valves, bidirectional electromagnetic valve of the present invention be provided only with a pilot valve mouth and pilot valve components, thus decrease the quantity of parts, simplify assembly technology；In addition, the structural design of two non-return valves is not adopted due to the present invention, thus also just eliminate the structure of support, and then also eliminate the structure that two the location bars preventing its rotation are set at support, correspondingly, piston also just eliminates the structures in hole, two location, thus not only reduces the quantity of parts, and reduce difficulty of processing and assembly difficulty；Owing to the parts of the bidirectional electromagnetic valve of the present invention are less, the difficulty of assembly technology reduces, thus the reliability of its work is correspondingly improved.
In sum, bidirectional electromagnetic valve provided by the present invention can substantially reduce the quantity of parts on the one hand, simplifies assembly technology, reduces manufacturing cost, can improve the reliability of work on the other hand.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of bidirectional electromagnetic valve in prior art；
Fig. 2 is the structural representation of the first non-return valve of bidirectional electromagnetic valve in Fig. 1 and the second non-return valve；
Fig. 3 is the partial structurtes schematic diagram that the piston of bidirectional electromagnetic valve in Fig. 1, the first non-return valve and the second non-return valve are constituted；
Fig. 4 is the structural representation of bidirectional electromagnetic valve in an embodiment of the present invention；
Fig. 5 is the structural representation of the piston of bidirectional electromagnetic valve in Fig. 4.
Wherein, in Fig. 1 to Fig. 3, corresponding relation between accompanying drawing labelling and component names is:
1 ' valve seat；1 ' 1 primary valve；1 ' 2 epicoele；1 ' 3 cavity of resorption；
2 ' pistons；2 ' 1 first pilot valve mouths；2 ' 2 second pilot valve mouths；2 ' 3 balance pipes；2 ' 4 nonreturn valve cores；
3 ' 2 horizontal adapters；3 ' 1 vertical joint pipes；
4 ' 1 sleeve pipes；4 ' 2 dynamic iron cores；4 ' 3 static iron cores；4 ' 4 coils；
5 ' supports；5 ' 1 first non-return valves；5 ' 2 second non-return valves；5 ' 3 location bars.
In Fig. 4 and Fig. 5, the corresponding relation between accompanying drawing labelling and component names is:
1 valve seat；11 primary valves；12 epicoeles；13 cavity of resorptions；14 passage gaps；
2 pistons；21 pilot valve mouths；22 pilot passage；26 caulking parts；
231 first radial holes；232 second radial holes；233 radial sealing surfaces；234 radial seal bodies；235 radial stop parts；235a radial direction through hole；236 the 3rd radial holes；
241 axial cavity；242 first axial seal faces；243 first axial retention parts；243a the first axially extending bore；244 nonreturn valve cores；244a spool radial hole；244b spool axial hole；245 first axial hole；
251 inclined holes；252 second axial hole；253 the 3rd axial hole；254 second axial seal faces；255 second axial seal bodies；256 second axial retention parts；256a the second axially extending bore；
31 horizontal adapters；32 vertical joint pipes；
41 sleeve pipes；42 dynamic iron cores；43 pilot valve spheroids；44 elastomeric elements；45 static iron cores；46 coils.
Detailed description of the invention
The core of the present invention is for providing a kind of bidirectional electromagnetic valve, and the structural design of this bidirectional electromagnetic valve can substantially reduce the quantity of parts on the one hand, simplifies assembly technology, reduces manufacturing cost, can improve the reliability of work on the other hand.
In order to make those skilled in the art be more fully understood that technical scheme, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Refer to Fig. 4 and Fig. 5, Fig. 4 is the structural representation of bidirectional electromagnetic valve in an embodiment of the present invention；Fig. 5 is the structural representation of the piston of bidirectional electromagnetic valve in Fig. 4.
In one embodiment, as shown in Figure 4, bidirectional electromagnetic valve provided by the present invention, including valve seat 1, this valve seat 1 is provided with valve pocket, is formed with primary valve 11, and is provided with the piston 2 turning off or on primary valve 11 in valve pocket in valve pocket；As shown in Figure 4, piston 2 separates valve pocket and is the epicoele 12 being positioned at above piston 2 and is positioned at the cavity of resorption 13 below piston 2, and, in epicoele 12, the upper end of piston 2 is provided with pilot valve mouth 21, and this pilot valve mouth 21 is turned on and off by the pilot valve components of bidirectional electromagnetic valve；As shown in Figure 4, described bidirectional electromagnetic valve also includes horizontal adapter 31 and vertical joint pipe 32, and horizontal adapter 31 connects with cavity of resorption 13, and vertical joint pipe 32 connects with primary valve 11, and connects with cavity of resorption 13 when primary valve 11 is opened.
As shown in Figure 4 and Figure 5, on the basis of above-mentioned prior art, between the circumferential side wall of piston 2 with the inwall of corresponding described valve pocket, there is passage gaps 14；Piston 2 is provided with the first branch road and the second branch road that all connect with pilot valve mouth 21, and when pilot valve mouth 21 is opened, first route epicoele 12 to horizontal adapter 31 one end one-way conduction (that is coolant can pass through this first route epicoele 12 flow to horizontal adapter 31 one end, and epicoele 12 can not be flowed to by horizontal adapter 31 one end), second route epicoele 12 to vertical joint pipe 32 one end guiding conducting (that is coolant can pass through this second route epicoele 12 flow to vertical joint pipe 32 one end, and epicoele 12 can not be flowed to by vertical joint pipe 32 one end)；As shown in Figure 4 and Figure 5, piston 2 is additionally provided with can by the 3rd branch road from vertical joint pipe 32 one end to epicoele 12 one-way conduction (that is coolant can by the 3rd route vertical joint pipe 32 one end flow to epicoele 12, and vertical joint pipe 32 one end can not be flowed to by epicoele 12)；Meanwhile, pilot valve mouth 21 and the described second determined circulation area of branch road are more than circulation area more than described 3rd branch road of the circulation area of passage gaps 14, pilot valve mouth 21 and the described first determined circulation area of branch road.
When the coil 46 of bidirectional electromagnetic valve is not powered on, when high pressure coolant is entered the cavity of resorption 13 of valve pocket by horizontal adapter 31, first branch road is closed, coolant enters the epicoele 12 being positioned at above piston 2 by described passage gaps 14, under the effect of high pressure coolant and gravity, pilot valve components closes pilot valve mouth 21, now owing to epicoele 12 and cavity of resorption 13 are high-pressure side, and due in epicoele 12 lifting surface area of piston 2 more than the lifting surface area of piston 2 in cavity of resorption 13, and owing to vertical joint pipe 32 one end is low-pressure end, thus move downward at the effect lower piston 2 of pressure differential, close primary valve 11.When the coil 46 of bidirectional electromagnetic valve is energized, under the influence of a magnetic field, pilot valve components opens pilot valve mouth 21, high pressure coolant in epicoele 12 flows into vertical joint pipe 32 one end of low pressure by pilot valve mouth 21 and described second branch road, owing to pilot valve mouth 21 and the determined circulation area of the second branch road are more than the circulation area of passage gaps 14, thus the pressure in epicoele 12 declines, form low-pressure end, and cavity of resorption 13 is high-pressure side, piston moves upward under the effect of cavity of resorption 13 and the pressure differential of epicoele 12, opening primary valve 11, electromagnetic valve is opened.During coil blackout, magnetic field disappears, and pilot valve components resets thus closing pilot valve mouth 21, and now the coolant in epicoele 12 does not flow to vertical joint pipe 32 one end again through pilot valve mouth 21 and the second branch road, thus the pressure in epicoele 12 rises, until equal with the pressure of the high pressure coolant of horizontal adapter 31 one end；Now, piston upper chamber 12 and cavity of resorption 13 are high-pressure side, but in epicoele 12, the lifting surface area of piston 2 is more than the lifting surface area of piston 2 in cavity of resorption 13, and owing to vertical joint pipe 32 one end is low-pressure end, thus under the effect of pressure differential, piston 2 moves downward, close primary valve 11, closed electromagnetic valve.
When the coil 46 of bidirectional electromagnetic valve is not powered on, when high pressure coolant is entered by vertical joint pipe 32 one end, second branch road is closed, high pressure coolant enters epicoele 12 by the 3rd branch road, now pilot valve components closes pilot valve mouth 21 under the effect of high pressure coolant and gravity, epicoele 12 and vertical joint pipe 32 one end are high-pressure side, but due in epicoele 12 lifting surface area of piston 2 more than the lifting surface area of the determined piston 2 of vertical joint pipe 32 one end primary valve 11, and owing to horizontal adapter 31 one end and cavity of resorption 13 are low-pressure end, thus under the effect of pressure differential, piston 2 closes primary valve 11, closed electromagnetic valve.When coil 46 is energized, under the influence of a magnetic field, pilot valve components opens pilot valve mouth 21, and the high pressure coolant in epicoele 12 flows to horizontal adapter 31 one end of low pressure by pilot valve mouth 21 and the first branch road, owing to pilot valve mouth 21 and the determined circulation area of the first branch road are more than the circulation area of the 3rd branch road, thus the pressure in epicoele 12 declines, forming low-pressure end, now under the effect of pressure differential, piston 2 moves upward, opening primary valve 11, electromagnetic valve is opened.When coil 46 power-off, magnetic field disappears, pilot valve components resets thus closing pilot valve mouth 21, now the high pressure coolant in epicoele 12 can not flow to horizontal adapter 31 one end of low pressure again through pilot valve mouth 21 and the first branch road, thus pressure rises, form the high-pressure side equal with vertical joint pipe 32 one end, but due in epicoele 12 lifting surface area of piston more than the lifting surface area of the determined piston 2 of vertical joint pipe 32 one end primary valve 11, and owing to horizontal adapter 31 one end and cavity of resorption 13 are low-pressure end, thus under the effect of pressure differential, piston 2 closes primary valve 11, closed electromagnetic valve.
Relative to the structural design of two pilot valve mouths of prior art and two non-return valves, bidirectional electromagnetic valve of the present invention be provided only with a pilot valve mouth 21 and pilot valve components, thus decrease the quantity of parts, simplify assembly technology；In addition, the structural design of two non-return valves is not adopted due to the present invention, thus also just eliminate the structure of support, and then also eliminate the structure that two the location bars preventing its rotation are set at support, correspondingly, piston also just eliminates the structures in hole, two location, thus not only reduces the quantity of parts, and reduce difficulty of processing and assembly difficulty；Owing to the parts of the bidirectional electromagnetic valve of the present invention are less, the difficulty of assembly technology reduces, thus the reliability of its work is correspondingly improved.
In sum, bidirectional electromagnetic valve provided by the present invention can substantially reduce the quantity of parts on the one hand, simplifies assembly technology, reduces manufacturing cost, can improve the reliability of work on the other hand.
In the above-described embodiments, it is possible to pilot valve components is made specific design.As shown in Figure 4, pilot valve components includes sleeve pipe 41, dynamic iron core 42, pilot valve spheroid 43, elastomeric element 44, static iron core 45 and coil 46；Sleeve pipe 41 is connected on valve seat 1, and one end of dynamic iron core 42 is provided with the pilot valve spheroid 43 being turned on and off pilot valve mouth, and its other end is connected with static iron core 45 by elastomeric element 44, and the outside of sleeve pipe 41 is located at by coil 46.When coil 46 is energized, under the influence of a magnetic field, dynamic iron core 42 overcomes the elastic force of elastomeric element 44, to static iron core 45 1 end motion, thus driving pilot valve spheroid 43 to open pilot valve mouth 21；When the coil is de-energized, magnetic field disappears, and now under the effect of the elastic force of elastomeric element 44, dynamic iron core 42 resets, and then drives pilot valve spheroid 43 to close pilot valve mouth 21.
In the above-described embodiments, connect with described first branch road and described second branch road for the ease of pilot valve mouth 21, can being provided with the pilot passage 22 connected with pilot valve mouth 21 on piston 2 axially further, pilot valve mouth 21 is connected with described first branch road and described second branch road respectively by this pilot passage 22.
It should be noted that in the above-described embodiments, no matter the first branch road of which kind of structure, it is merely able to when pilot valve mouth 21 is opened by epicoele 12 to horizontal adapter 31 one end one-way conduction, just all should within protection scope of the present invention；Meanwhile, no matter the second branch road of which kind of structure, it is merely able to when pilot valve mouth 21 is opened by epicoele 12 to vertical joint pipe 32 one end one-way conduction, also all should within protection scope of the present invention.
Specifically, it is possible to the structure of a kind of first branch road of specific design.As it is shown in figure 5, described first branch road includes the first radial hole 231 and the second radial hole 232, first radial hole 231 one end connects with pilot passage 22, and its other end and the second radial hole 232 connect；Being provided with radial sealing surfaces 233 between second radial hole 232 and the first radial hole 231, be provided with the radial seal body 234 sealing this radial sealing surfaces 233 in the second radial hole 232, this radial seal body 234 is specifically as follows spheroid；Second radial hole 232 is provided with radial stop parts 235 away from one end of radial sealing surfaces 233, and radial stop parts 235 are communicated with the radial direction through hole 235a of the second radial hole 232 and horizontal adapter 31 one end.During work, high pressure coolant is entered the first radial hole 231 by pilot passage 22, then washes radial seal body 234 open, enters in the second radial hole 232, and then enters horizontal adapter 31 one end by the radial direction through hole 235a of radial stop parts 235.
Specifically, in order to improve reliability and the radially movable stability that radial seal body 234 seals, the second radial hole 232 can be round platform hole, and the aperture of the miner diameter end in this round platform hole is slightly larger than the external diameter of radial seal body 234, and connects radial sealing surfaces 233；Additionally, as it is shown in figure 5, the bigger diameter end in described round platform hole is connected to the 3rd radial hole 236 that aperture becomes big, radial stop parts 235 are assemblied in the 3rd radial hole 236, and specifically, radial stop parts 235 can in interference fit with in the 3rd radial hole 236.
Additionally, in the above-described embodiments, it is also possible to the second branch road is made specific design.Such as, as shown in Figure 5, described second branch road includes the axial cavity 241 connected with pilot passage 22, is provided with the first axial seal face 242 between this axial cavity 241 and pilot passage 22, is provided with the first axial seal body sealing this first axial seal face 242 in axial cavity 241；Axial cavity 241 is provided with the first axial retention parts 243 away from the one end in the first axial seal face 242, and these the first axial retention parts 243 are communicated with the first axially extending bore 243a of axial cavity 241 and vertical joint pipe 32 one end.
Specifically, as it is shown in figure 5, this first axial seal body can be nonreturn valve core 244, nonreturn valve core 244 is provided with the spool radial hole 244a and spool axial hole 244b that are interconnected, spool radial hole 244a connects with axial cavity 241, spool axial hole 244b and the first axially extending bore 243a connection.During work, high pressure coolant is entered in pilot passage 22 by pilot valve mouth 21, then the nonreturn valve core 244 sealing to the first axial seal face 242 is washed open, enter in axial cavity 241, then high pressure coolant is through spool radial hole 244a and spool axial hole 244b, and the first axially extending bore 243a again through the first axial retention parts 243 enters vertical joint pipe 32 one end.
Specifically, as shown in Figure 5, in order to improve the reliability that the first axial retention parts 243 connect, axial cavity 241 can be connected to, away from the one end in the first axial seal face 242, the first axial hole 245 that aperture becomes big, piston 2 is provided with caulking part 26, and the first axial retention parts 243 are riveted in the first axial hole 245 by caulking part 26.
Furthermore, it is necessary to explanation, in the above-described embodiments, no matter the 3rd branch road of which kind of structure, can only by vertical joint pipe 32 one end to epicoele 12 one-way conduction, just all should within protection scope of the present invention.
Specifically, it is possible to a kind of 3rd branch structure of specific design.Such as, as it is shown in figure 5, described 3rd branch road includes the second axial hole 252 and the 3rd axial hole 253, the one end in the second axial hole 252 connects with vertical joint pipe 32 one end, its other end and the 3rd axial hole 253 connect, and the aperture in the 3rd axial hole 253 is more than the aperture in the second axial hole 252；In addition, as shown in Figure 5, being provided with the second axial seal face 254 between second axial hole 252 and the 3rd axial hole 253, and be provided with the second axial seal body 255 sealing this second axial seal face 254 in the 3rd axial hole 253, this second axial seal body 255 can sealed spheroid；Furthermore, as it is shown in figure 5, the 3rd axial hole 253 is provided with the second axial retention parts 256 away from the one end in the second axial seal face 254, and these the second axial retention parts 256 are communicated with the second axially extending bore 256a in the 3rd axial hole 253 and epicoele 12.
Specifically, as shown in Figure 4 and Figure 5, connecting with vertical joint pipe 32 one end for the ease of the second axial hole 252, piston 2 can be further provided with inclined hole 251, and the second axial hole 252 is by connecting with vertical joint pipe 32 one end by inclined hole 251.
During work, as shown in Figure 4 and Figure 5, high pressure coolant is entered in inclined hole 251 by vertical joint pipe 32 one end, and wash the sealing to the second axial seal face 254 of the second axial seal body 255 open, enter in the second axial hole 252, and then entered in epicoele 12 by the second axially extending bore 256a of the second axial retention parts 256.
Finally, it should be noted that, in the first branch road, the first radial hole 231, radial sealing surfaces 233, radial seal body the 234, second radial hole 232 and radial stop parts 235 have effectively formed the first one-way valve structures, and this first one-way valve structures makes the first branch road one-way conduction；In the second branch road, axial cavity the 241, first axial seal face 242, nonreturn valve core 244 and the first axial retention parts 243 have effectively formed one-way valve structures in second, and this second one-way valve structures makes the second branch road one-way conduction；In the 3rd branch road, second the 254, second axial seal body the 255, the 3rd axial hole, the 252, second axial seal face, axial hole 253 and the second axial retention parts 256 have effectively formed the third one-way valve structures, and this third one-way valve structures makes the 3rd branch road one-way conduction.
Obviously, under meeting the premise of function of one-way conduction, the first one-way valve structures above-mentioned, the second one-way valve structures and the third one-way valve structures can be exchanged, that is first branch road can adopt described the second one-way valve structures or the third one-way valve structures described, second branch road can adopt the first one-way valve structures described or the third one-way valve structures described, and the 3rd branch road can adopt the first one-way valve structures described or described the second one-way valve structures；Certainly, under meeting the premise of function of one-way conduction, described first branch road, the second branch road or the 3rd branch road can also adopt the check valve of other structures, and the check valve of these other structures obviously also should within protection scope of the present invention.
Above a kind of bidirectional electromagnetic valve provided by the present invention is described in detail.Principles of the invention and embodiment are set forth by specific case used herein, and the explanation of above example is only intended to help to understand method and the core concept thereof of the present invention.It should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention, it is also possible to the present invention carries out some improvement and modification, these improve and modify in the protection domain also falling into the claims in the present invention.
Claims (10)
1. a bidirectional electromagnetic valve, including the valve seat (1) being provided with primary valve (11) and valve pocket, described valve pocket is provided with the piston (2) coordinated with described primary valve (11), it is epicoele (12) and cavity of resorption (13) that described piston (2) separates described valve pocket, and the upper end of described piston (2) is provided with the pilot valve mouth (21) being turned on and off by pilot valve components；Described bidirectional electromagnetic valve also includes the horizontal adapter (31) connected with described cavity of resorption (13) and the vertical joint pipe (32) that can be connected by described primary valve (11) with cavity of resorption (13)；It is characterized in that there is between the circumferential side wall of described piston (2) with the inwall of corresponding described valve pocket passage gaps (14)；Described piston (2) is provided with and all connects with described pilot valve mouth (21) and can by the described epicoele (12) the first branch road to described horizontal adapter (31) one end one-way conduction and can by the described epicoele (12) the second branch road to described vertical joint pipe (32) one end one-way conduction；Being additionally provided with on described piston (2) can by described vertical joint pipe (32) one end to the 3rd branch road of described epicoele (12) one-way conduction；Described pilot valve mouth (21) and the described second determined circulation area of branch road are more than circulation area more than described 3rd branch road of the circulation area of described passage gaps (14), described pilot valve mouth (21) and the described first determined circulation area of branch road.
2. bidirectional electromagnetic valve as claimed in claim 1, it is characterized in that, described piston (2) offers the pilot passage (22) connected with described pilot valve mouth (21) vertically further, described pilot valve mouth (21) by described pilot passage (22) respectively with described first branch road and described second branch road one-way conduction.
3. bidirectional electromagnetic valve as claimed in claim 2, it is characterized in that, described first branch road includes the first radial hole (231), described first radial hole (231) one end connects with described pilot passage (22), and its other end is communicated with the second radial hole (232) that aperture becomes big；It is provided with radial sealing surfaces (233) between described second radial hole (232) and described first radial hole (231), described second radial hole (232) is provided with the radial seal body (234) sealing this radial sealing surfaces (233)；Described second radial hole (232) is provided with radial stop parts (235) away from one end of described radial sealing surfaces (233), and described radial stop parts (235) are communicated with the radial direction through hole (235a) of described second radial hole (232) and described horizontal adapter (31) one end.
4. bidirectional electromagnetic valve as claimed in claim 3, it is characterized in that, described second radial hole (232) is round platform hole, the miner diameter end in this round platform hole connects described radial sealing surfaces (233), its bigger diameter end is connected to the 3rd radial hole (236) that aperture becomes big, and described radial stop parts (235) are assemblied in the 3rd radial hole (236).
5. the bidirectional electromagnetic valve as described in any one of claim 2 to 4, it is characterized in that, described second branch road includes the axial cavity (241) connected with described pilot passage (22), it is provided with the first axial seal face (242) between this axial cavity (24) and described pilot passage (22), in described axial cavity (241), is provided with the first axial seal body sealing this first axial seal face (242)；Described axial cavity (241) is provided with the first axial retention parts (243) away from one end of described first axial seal face (242), and this first axial retention parts (243) is communicated with first axially extending bore (243a) of described axial cavity (241) and described vertical joint pipe (32) one end.
6. bidirectional electromagnetic valve as claimed in claim 5, it is characterized in that, described first axial seal body is nonreturn valve core (244), described nonreturn valve core (244) is provided with the spool radial hole (244a) and spool axial hole (244b) that are interconnected, described spool radial hole (244a) connects with described axial cavity (241), and described spool axial hole (244b) connects with described first axially extending bore (243a).
7. bidirectional electromagnetic valve as claimed in claim 5, it is characterized in that, described axial cavity (241) is connected to, away from one end of described first axial seal face (242), the first axial hole (245) that aperture becomes big, described piston (2) is provided with caulking part (26), and described first axial retention parts (243) are riveted in described first axial hole (245) by described caulking part (26).
8. the bidirectional electromagnetic valve as described in any one of Claims 1-4, it is characterized in that, described 3rd branch road includes the second axial hole (252) connected with described vertical joint pipe (32) one end, and the other end in this second axial hole (252) is communicated with the 3rd axial hole (253) that aperture becomes big；It is provided with the second axial seal face (254) between second axial hole (252) and the 3rd axial hole (253), and the 3rd axial hole (253) is provided with the second axial seal body (255) sealing this second axial seal face (254)；Described 3rd axial hole (253) is provided with the second axial retention parts (256) away from one end of described second axial seal face (254), and this second axial retention parts (256) is communicated with second axially extending bore (256a) in the 3rd axial hole (253) and described epicoele (12).
9. bidirectional electromagnetic valve as claimed in claim 8, it is characterized in that, described piston (2) offers inclined hole (251) further, and described second axial hole (252) is connected with described vertical joint pipe (32) one end by described inclined hole (251).
10. the bidirectional electromagnetic valve as described in any one of Claims 1-4, it is characterized in that, described pilot valve components includes the sleeve pipe (41) being connected on described valve seat (1), dynamic iron core (42) it is provided with in described sleeve pipe (41), one end of described dynamic iron core (42) is connected to the pilot valve spheroid (43) sealing or opening described pilot valve mouth (21), its other end is connected to static iron core (45) by elastomeric element (44), described sleeve pipe (41) be provided externally with coil (46).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110069844.8A CN102691820B (en) | 2011-03-22 | 2011-03-22 | A kind of bidirectional electromagnetic valve |
| PCT/CN2012/072713 WO2012126368A1 (en) | 2011-03-22 | 2012-03-21 | Two-way electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110069844.8A CN102691820B (en) | 2011-03-22 | 2011-03-22 | A kind of bidirectional electromagnetic valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102691820A CN102691820A (en) | 2012-09-26 |
| CN102691820B true CN102691820B (en) | 2016-07-27 |
Family
ID=46857463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110069844.8A Active CN102691820B (en) | 2011-03-22 | 2011-03-22 | A kind of bidirectional electromagnetic valve |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102691820B (en) |
| WO (1) | WO2012126368A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013139187A1 (en) * | 2012-03-21 | 2013-09-26 | 浙江三花股份有限公司 | Bidirectional solenoid valve |
| EP2937608B1 (en) * | 2013-03-28 | 2019-06-05 | Zhejiang Sanhua Climate & Appliance Controls Group Co., Ltd. | Linear bidirectional electromagnetic valve |
| CN104074998B (en) * | 2013-03-28 | 2019-01-04 | 浙江三花制冷集团有限公司 | Linear type bidirectional electromagnetic valve |
| CN106523767B (en) * | 2015-09-10 | 2019-12-31 | 浙江盾安禾田金属有限公司 | Two-way electromagnetic valve |
| CN107965584B (en) * | 2016-10-20 | 2020-06-19 | 浙江三花智能控制股份有限公司 | Electronic expansion valve and refrigeration system with same |
| CN109998166A (en) * | 2019-05-09 | 2019-07-12 | 东莞朗勤电子科技有限公司 | A kind of Water pipe and its air pressure control method |
| CN110618022B (en) * | 2019-09-17 | 2021-05-18 | 东北大学 | One-way quick electromagnetic unloading device suitable for true triaxial testing machine |
| CN111878588B (en) * | 2020-07-20 | 2022-04-12 | 江苏中伟节能科技有限公司 | Stop valve suitable for high-temperature fluid |
| CN216743076U (en) * | 2021-12-07 | 2022-06-14 | 浙江盾安机械有限公司 | Electromagnetic valve and air conditioning system with same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0204666A1 (en) * | 1985-05-31 | 1986-12-10 | EDI SYSTEM Srl | A two-way reversible-flow hydraulic control valve |
| CN2675970Y (en) * | 2003-05-12 | 2005-02-02 | 浙江三花股份有限公司 | Fore running type bidirectional current electromagnetic valve |
| CN101663523A (en) * | 2007-01-22 | 2010-03-03 | Imi韦伯有限公司 | Solenoid valve having a two piece moving valve element |
| CN201672129U (en) * | 2010-06-08 | 2010-12-15 | 北京众博达石油科技有限公司 | Secondary unloading device for electromagnetic valve |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2392954Y (en) * | 1999-05-19 | 2000-08-23 | 张军伟 | Double-way electromagnetic valve |
| US6328275B1 (en) * | 2000-02-04 | 2001-12-11 | Husco International, Inc. | Bidirectional pilot operated control valve |
| US8256739B2 (en) * | 2008-12-22 | 2012-09-04 | Husco International, Inc. | Poppet valve operated by an electrohydraulic poppet pilot valve |
| CN101893098B (en) * | 2009-05-22 | 2013-03-13 | 浙江三花股份有限公司 | Pilot-operated type two-way circulated solenoid valve |
-
2011
- 2011-03-22 CN CN201110069844.8A patent/CN102691820B/en active Active
-
2012
- 2012-03-21 WO PCT/CN2012/072713 patent/WO2012126368A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0204666A1 (en) * | 1985-05-31 | 1986-12-10 | EDI SYSTEM Srl | A two-way reversible-flow hydraulic control valve |
| CN2675970Y (en) * | 2003-05-12 | 2005-02-02 | 浙江三花股份有限公司 | Fore running type bidirectional current electromagnetic valve |
| CN101663523A (en) * | 2007-01-22 | 2010-03-03 | Imi韦伯有限公司 | Solenoid valve having a two piece moving valve element |
| CN201672129U (en) * | 2010-06-08 | 2010-12-15 | 北京众博达石油科技有限公司 | Secondary unloading device for electromagnetic valve |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012126368A1 (en) | 2012-09-27 |
| CN102691820A (en) | 2012-09-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102691820B (en) | A kind of bidirectional electromagnetic valve | |
| CN103322273B (en) | Bidirectional electromagnetic valve | |
| CN103322205B (en) | A kind of bidirectional electromagnetic valve | |
| CN104676081A (en) | Electromagnetic valve | |
| CN103542647B (en) | A kind of Bidirectional throttling electronic expansion valve | |
| CN208605418U (en) | A kind of pilot type electromagnetic switch valve | |
| CN204985944U (en) | Your bi -pass high frequency electric magnet valve | |
| CN104500789B (en) | Anti-backflow twin-core integral type valve | |
| CN203516580U (en) | Self-sealing magnetorheological damper | |
| CN106523884B (en) | Anti- clamping stagnation high-low pressure pressure limiting valve for dual protection and lubricating oil pump | |
| CN106523767B (en) | Two-way electromagnetic valve | |
| CN105402468B (en) | A kind of solenoid valve box oil-way switching apparatus | |
| CN206846045U (en) | Mechanical water leakage protects threshold switch | |
| CN109538561A (en) | A kind of guide proportion control formula switch valve | |
| CN204176095U (en) | Large discharge bi-bit bi-pass miniature valve | |
| CN204459575U (en) | Triplate line magnetic cleaning pipe joint | |
| CN204592501U (en) | Band quick inserting joint direct action solenoid valve | |
| CN204253484U (en) | A kind of novel mass flow Bidirectional balanced valve | |
| CN104235474B (en) | A kind of two-bit triplet magnetic valve | |
| CN204371623U (en) | Oil-well pump | |
| CN102313023B (en) | Electromagnetic valve and automobile air conditioning system | |
| CN202992231U (en) | Self-sealing high-pressure valve | |
| CN205401759U (en) | Compound control valve | |
| CN206972643U (en) | A kind of electromagnetism hydraulic control one-way valve | |
| CN204459612U (en) | Straight-through pipeline magnetic cleaning pipe joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170210 Address after: 312500 Zhejiang city of Shaoxing province Xinchang County Chengguan town of Liquan Patentee after: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. Address before: 312500 Liquan village of Chengguan Zhejiang city of Shaoxing province Xinchang County town Patentee before: ZHEJIANG SANHUA Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220816 Address after: 312500 Daming new area, Zhejiang Xinchang Economic Development Zone, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Sanhua Commercial Refrigeration Co.,Ltd. Address before: Xia Li Quan, Chengguan Town, Xinchang County, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right |