CN106352100A - Pressure operating valve and frozen cycle - Google Patents
Pressure operating valve and frozen cycle Download PDFInfo
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- CN106352100A CN106352100A CN201610551152.XA CN201610551152A CN106352100A CN 106352100 A CN106352100 A CN 106352100A CN 201610551152 A CN201610551152 A CN 201610551152A CN 106352100 A CN106352100 A CN 106352100A
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Classifications
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- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Details Of Valves (AREA)
Abstract
The invention provides a pressure operating valve and a frozen cycle, capable of suppressing the vibration of a valve member (2), thereby preventing a needle-like portion (21) from repeatedly colliding with the valve port (13) or preventing the occurrence of an abnormal sound. A diaphragm (43) is operated by the pressure of the fluid of a primary side joint (11a), and a valve port (13) is opened and closed by the needle portion (21) of the valve member (2). At least a part of a projection portion (24) serving as the valve member (2) is disposed on the downstream side of the valve port (13). A force applying mechanism is provided for applying force of the fluid on the valve member (2) toward one side of an axis L. The force applying mechanism is a projection portion (24) having a D-shaped cross section (241) of the valve member (2). The flow rate of the refrigerant is increased on the D-shaped cross section (241) side of the valve member (2).
Description
Technical field
The present invention relates to making the pressure-operated valve of valve member action and freezing follow according to the Fluid pressure of primary side
Ring.
Background technology
At present, as pressure-operated valve, there is such as Japanese Unexamined Patent Publication 6-229481 publication (patent literary composition
Offer 1) disclosed in valve.Exceed the fluid of the setting pressure set by adjusting screw and adjustment spring in pressure
To flowing into, pipe flow is fashionable, and this pressure-operated valve makes ball valve lift off a seat and so that fluid is flowed out from effuser.In addition,
Sliding freely configure guide vane part in the cylinder above valve chamber, prevent from vibrating.
Prior art literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 6-229481 publication
Content of the invention
Invent problem to be solved
Although the valve port of the inner side in valve seat for the fluid and ball valve (valve member) in existing pressure-operated valve
Between flow, but, due to the disorder of the flowing of the cold-producing medium after this valve port, valve member slight vibration,
There is this vibration to be delivered to action axle etc. and the situation of abnormal sound occurs.In addition, being needle-like particularly in valve member
In the case of portion, due to this slight vibration, needle-like portion and valve port impact several times, there is valve port (valve seat) mill
Situation about damaging.The vibration of this valve member also produces because of the flowing of cold-producing medium.
The problem of the present invention is to provide a kind of pressure-operated valve and freeze cycle, can suppress shaking of valve member
Dynamic, and then prevent valve member and valve port impact several times or prevent abnormal sound.
For solving the scheme of problem
The pressure-operated valve of scheme 1 makes valve member action according to the pressure of the fluid of primary side, and above-mentioned pressure moves
Make valve to be characterised by,
This valve port is located at least a portion of the above-mentioned valve member that the valve port of the above-mentioned fluid that flows is opened and closed
Downstream, and possess using from above-mentioned valve port flowing fluid power to axis from this valve member to this valve port
Side force force application mechanism.
Pressure-operated valve according to scheme 1 for the pressure-operated valve of scheme 2 it is characterised in that
Above-mentioned force application mechanism is by above-mentioned valve member around above-mentioned axis non-rotationally-symmetric asymmetrical shape portion structure
Become.
Pressure-operated valve according to scheme 2 for the pressure-operated valve of scheme 3 it is characterised in that
Above-mentioned valve member has: needle-valve, its opposed with above-mentioned valve port and from the upstream side of fluid towards downstream
Undergauge；And lobe, it is linked with the downstream of this needle-like portion, and above-mentioned asymmetrical shape portion is formed at
State lobe.
The pressure-operated valve of scheme 4 according to the pressure-operated valve of scheme 2 it is characterised in that
Above-mentioned valve member have opposed with above-mentioned valve port and from the upstream side of fluid towards the pin of downstream undergauge
Shape portion, above-mentioned asymmetrical shape portion is formed at above-mentioned needle-like portion.
The pressure-operated valve of scheme 5 is according to the pressure-operated valve of scheme 1 it is characterised in that above-mentioned force machine
Structure is by forming asymmetrical shape non-rotationally-symmetric around above-mentioned axis on the valve seat around above-mentioned valve port
Portion is constituted.
Pressure-operated valve according to scheme 5 for the pressure-operated valve of scheme 6 it is characterised in that
Above-mentioned asymmetrical shape portion is countersink region, and this countersink region is formed at the valve seat of the surrounding of above-mentioned valve port, and
It is formed at the position amesiality with respect to above-mentioned axis.
Pressure-operated valve according to scheme 1 for the pressure-operated valve of scheme 7 it is characterised in that
Above-mentioned force application mechanism is made up of endless member, and this endless member is configured at the downstream of above-mentioned valve port, and
Have around above-mentioned axis non-rotationally-symmetric asymmetrical shape portion.
The freeze cycle of scheme 8 is characterised by possessing:
The compressor that cold-producing medium as fluid is compressed；Condenser；Vaporizer；In above-mentioned condenser
The expansion valve making cold-producing medium expand and above-mentioned vaporizer between and reducing pressure；And it is connected to the row of above-mentioned compressor
Go out the pressure any one of the scheme 1 to 7 between side line and the secondary side line of above-mentioned expansion valve to move
Make valve.
Invention effect
According to the pressure-operated valve of scheme 1, the flowing of the fluid after valve port is made to produce due to force application mechanism
Power valve member is asymmetricly acted on valve port axis both sides, therefore valve member is to the axis with valve port
The direction force intersected, can suppress the vibration of valve member.As a result, be prevented from valve member and valve port (or
Person's valve seat) impact several times, abnormal sound (collision sound) will not be produced, obtain quietness.In addition, being prevented from
Valve port weares and teares.
According to the pressure-operated valve of scheme 2,3,4, by setting the shape of valve member, thus obtaining and side
Case 1 identical effect.
According to the pressure-operated valve of scheme 5,6, by setting the shape of valve seat, thus obtaining and scheme 1
Identical effect.
According to the pressure-operated valve of scheme 7, by configuring endless member, thus obtaining and scheme 1 identical
Effect.
According to the refrigerating circulation system of scheme 8, obtain and scheme 1 to 7 identical effect.
Brief description
Fig. 1 is the longitudinal section of the pressure-operated valve of the first embodiment of the present invention.
Fig. 2 is the figure of the valve member representing first embodiment.
Fig. 3 is the side view of the variation of the valve member representing first embodiment.
Fig. 4 is the longitudinal section of the pressure-operated valve of second embodiment of the present invention.
Fig. 5 is amplification view and the upward view of the seat portion representing second embodiment.
Fig. 6 is the longitudinal section of the pressure-operated valve of third embodiment of the present invention.
Fig. 7 is the amplification view of endless member and the top view representing the 3rd embodiment.
Fig. 8 is the sketch structure figure of the freeze cycle of embodiments of the present invention.
The explanation of symbol
1 valve body, 11 pipe arrangement connecting holes, 12 pipe arrangement connecting holes, 13 valve ports, 13a valve seat,
14 valve chambers, 16 spring housing, 17 balancing orifices, 18 guide holes, 2 valve members, 21 needle-like portion,
22 valve rods, 23 cylindrical portion, 24 lobe (force application mechanism), 241 D-shaped facets, 25 pins
Shape portion, 251 notch (force application mechanism), 6 endless members (force application mechanism), 61 openings, 62
Wall portion, 10 pressure-operated valves, 20 vaporizers, 30 outdoor heat exchangers (condenser), 40 is swollen
Swollen valve, bis- side lines of 40a, 50 compressors, 50a discharges side line, 100 freeze cycle, l
Axis.
Specific embodiment
Hereinafter, referring to the drawings the embodiment of the pressure-operated valve of the present invention is illustrated.Fig. 1 is first
The longitudinal section of the pressure-operated valve of embodiment, Fig. 2 is the figure of the valve member representing first embodiment.
Fig. 2 (a) is the side view of valve member, and Fig. 2 (b) is the upward view of valve member.
The pressure-operated valve 10 of this embodiment is the discharge side to the compressor of freeze cycle as described later
High pressure the example of pressure-regulating valve that is adjusted of pressure.This pressure-operated valve 10 has metal
Valve body 1.It is formed with pipe arrangement connecting hole 11, pipe arrangement connecting hole 12, valve port 13, valve chamber in valve body 1
14th, side ports 15, spring housing 16, balancing orifice 17 and guide hole 18.Pacify in pipe arrangement connecting hole 11
Equipped with the side connector 11a flowing into as shown by arrows for fluid, in pipe arrangement connecting hole 12, confession is installed
The secondary side connector 12a that fluid flows out as shown by arrows.Additionally, a side connector 11a and secondary side joint
Head 12a is assembled integral by solder brazing etc. and valve body 1.
One time side connector 11a is connected with valve chamber 14 via side ports 15, secondary side connector 12a via
Valve port 13 is connected with valve chamber 14.In addition, side ports 15 are via balancing orifice 17 with spring housing 16 even
Logical.Additionally, valve port 13 is the hole (the circular hole of section) of the drum centered on axis l, should
The surrounding composition valve seat 13a of valve port 13.
It is configured with valve member 2 in valve port 13, valve chamber 14 and guide hole 18.Valve member 2 is by needle-like portion
21st, valve rod 22, cylindrical portion 23 and lobe 24 are constituted.Needle-like portion 21 is opposed with valve port 13, and
Be formed as the shape towards downstream undergauge from upstream side.And, by the effect of diaphragm portion 4 described later,
The needle-like portion 21 of valve member 2 is made to retreat in valve port 13, thus being opened and closed to valve port 13.Valve member
2 at least a portion (cylindrical portion 23 and lobe 24) is located at the downstream of valve port 13.
Spring housing 16 is formed as the deep trouth of ring-type around guide hole 18, is configured with disc spring 3 in this spring housing 16.
It is fixed with flange shape spring support 22a in the end of the valve rod 22 of valve member 2, disc spring 3 is compressed in
Between the bottom of spring housing 16 and spring support 22a.Thus, disc spring 3 to valve member 2 to film described later
Piece 43 side exerts a force, and valve rod 22 is extruded to diaphragm 43.Guide hole 18 is the cylindrical shape of coupling valve rod 22
Shape, valve rod 22 can slide along axis l direction in guide hole 18 exactly.
On the top of valve body 1, diaphragm portion 4 is installed.Diaphragm portion 4 passes through upper lid 41 and lower cover 42 is constituted
Housing, this housing is embedded in the circular rib 1a on the top of valve body 1 by the installing hole 42a of lower cover 42,
It is fixed on valve body 1 by implementing solder brazing.In addition, possessing diaphragm between upper lid 41 and lower cover 42
43, by this diaphragm 43 and lower cover 42, delimit the pressure chamber 44 connecting with spring housing 16.In Shang Gai
It is configured with the pressing plate 45 abutting with diaphragm 43, the ball of this pressing plate 45 and pressure adjustment unit 5 described later in 41
55 abuttings.
Then, the pressure of pressure chamber 44 and the side ports being imported by spring housing 16, balancing orifice 17 are made
The pressure of 15 cold-producing medium is equal, if the pressure of this cold-producing medium is to set more than pressure, diaphragm 43 action
The amount corresponding with the pressure of the cold-producing medium in side ports 15, valve member 2 lifts off a seat 13a and shape
Become valve opening state.Additionally, as described later, rising to predetermined value in the pressure of the high pressure of the discharge side of compressor
When above, in the case of the purposes for making entrance side that cold-producing medium branches to vaporizer, by a side joint
Head 11a is connected with the discharge side line of the compressor of freeze cycle, by secondary side connector 12a and vaporizer
Entrance side connects.
On the top of diaphragm portion 4, pressure adjustment unit 5 is installed.Pressure adjustment unit 5 has substantially cylindrical shape
Spring box 51, spring support 52, adjusting screw 53, disc spring 54 and ball 55.Ball 55 is inserted to film
In the inserting hole 41a of the upper lid 41 in piece portion 4.
It is formed with internal thread part 41a in the top inner peripheral surface of spring box 51, in the periphery shape of adjusting screw 53
Become to have external thread part 53a.Then, by external thread part 53a is threaded into internal thread part 51a, from
And adjusting screw 53 is installed on spring box 51.In addition, adjusting screw 53 has slot 53b at top,
Fixture etc. can be made to be sticked in this slot 53a and rotate adjusting screw 53, so that adjusting screw 53 exists
Axis l side moves up.In addition, disc spring 54 embeds lobe 521 and the adjustment spiral shell of spring support 52
The lobe 531 of nail 53, and be configured between this spring support 52 and adjusting screw 53 with compressive state.
Then, by the elastic force of disc spring 54, spring support 52 is exerted a force to ball 55 side, and via this ball 55,
Pressing plate 45 exerts a force to valve closing direction to diaphragm 43.
As described above, in pressure adjustment unit 5, rotating adjusting screw 53, according to the axle of adjusting screw 53
The inlet in line l direction, can adjust the decrement of disc spring 54, can adjust disc spring 54 to diaphragm 43
The active force applying.Therefore, it is possible to the rising of the pressure of the fluid according to valve chamber 14, valve opening will be started
Pressure (setting pressure) precision is set as desired pressure well.After setting, by riveting, welding will
Adjusting screw 53 is fixing.
The lobe 24 of valve member 2 is formed with the face cut-out parallel with axis l in one part
D-shaped facet 241.That is, the part of this D-shaped facet 241 of valve member 2 is formed around the non-rotation of axis l
Turn symmetrical asymmetrical shape portion.Thus, power produced by the flowing of the cold-producing medium after making by valve port 13
Valve member 2 is asymmetricly acted on the both sides (left and right sides in Fig. 1) of the axis l of valve port 13.Thus,
Lobe 24 constitutes " force application mechanism ".
In this embodiment, the flow of the cold-producing medium due to passing through in D-shaped facet 241 side becomes big,
Therefore in the left and right directions of the asymmetrical part of composition of lobe 24, Fluid pressure produces pressure differential, right
Valve member 2 is to side (direction intersecting with axis l) active force.Thereby, it is possible to suppress valve member 2
Vibration.As a result, being prevented from valve member 2 and valve seat 13a impact several times, no longer produce abnormal sound, and
Obtain quietness.In addition, be prevented from valve port 13 wearing and tearing.
Fig. 3 represents the side view of the variation of valve member 2.The valve member 2 of this variation is by needle-like portion 25
Constitute with valve rod 26, be formed with notch 251 in the front end of needle-like portion 25.This notch 251 is only formed
Side in axis l.That is, the needle-like portion 25 with this notch 251 of valve member 2 is constituted around axis
L non-rotationally-symmetric asymmetrical shape portion.Thus, the flowing of the cold-producing medium after making by valve port 13 is produced
Raw power asymmetricly acts on the both sides of the axis l of valve port 13 to valve member 2 (needle-valve 25).Thus,
The notch 251 of the front end of needle-like portion 25 constitutes " force application mechanism ".
In this variation, the flow of the cold-producing medium due to passing through in notch 251 side becomes big, therefore in pin
The left and right directions of the asymmetrical part of composition in shape portion 25, Fluid pressure produces pressure differential, to valve member 2
To side (direction intersecting with axis l) active force.Thereby, it is possible to suppress the vibration of valve member 2,
Can obtain and first embodiment identical effect.
Fig. 4 is the longitudinal section of the pressure-operated valve of second embodiment, and Fig. 5 is the pressure of second embodiment
The major part amplification view of power operating valve.Fig. 5 (b) is the a-a direction view of Fig. 5 (a).Should
The second embodiment different structures that are valve member and valve seat 13a larger from first embodiment.Hereinafter,
In second and third embodiment, to first embodiment identical unit and corresponding unit labelling phase
Same symbol, and the repetitive description thereof will be omitted.
The valve member 2 of this second embodiment is valve member 2 same shape with variation.That is,
Valve member 2 is the shape eliminating the notch 251 of needle-like portion valve 25 in variation, and it has generally
Shape needle-like portion 27.In the valve body 1 of this second embodiment, in the secondary joint 12a of valve seat 13
Side, in the position of the axle l deviateing valve port 13, is formed with the countersink region 131 scraping out partial circle column.That is,
The countersink region 131 of valve seat 13 is formed at the position of the side being biased against axis l in the downstream of valve port 13.
And, this countersink region 131 is configured to around axis l non-rotationally-symmetric asymmetrical shape portion.
Thus, power produced by the flowing of the cold-producing medium after making by valve port 13 is to valve member 2 asymmetricly
Act on the both sides (left and right sides in Fig. 4) of the axis l of valve port 13.Thus, countersink region 131 constitutes
" force application mechanism ".And, in this second embodiment, due to the refrigeration passed through in countersink region 131 side
The flow of agent becomes big, therefore in the left and right directions of the asymmetrical part of composition in the downstream of valve port 13, stream
Body pressure produces pressure differential, to valve member 2 (needle-like portion 27) to side (direction intersecting with axis l)
Active force.Thereby, it is possible to suppress the vibration of valve member 2, can obtain imitating with first embodiment identical
Really.
Fig. 6 is the longitudinal section of the pressure-operated valve of the 3rd embodiment, and Fig. 7 is to represent the 3rd embodiment
Endless member figure.Fig. 7 (a) is the sectional view of endless member, and Fig. 7 (b) is bowing of endless member
View.Additionally, illustrating valve member 2 with chain-dotted line in Fig. 7 (a).3rd embodiment and second is in fact
The larger difference applying mode is, possesses endless member between valve seat 13a and secondary side connector 12a
6.Additionally, valve member 2 is identical with second embodiment.
As shown in fig. 7, endless member 6 has the maximum gauge opening 61 bigger than valve port 13.Opening 61
Form horseshoe-shaped shape, have in the part with this horseshoe-shaped line correspondences and bloat to axis l side
Wall portion 62.The wall portion 62 of this endless member 6 is formed in the downstream of valve port 13 and is biased against the one of axis l
The position of side, endless member 6 is formed around axis l non-rotationally-symmetric asymmetrical shape portion.
Thus, power produced by the flowing of the cold-producing medium after making by valve port 13 is to valve member 2 asymmetricly
Act on the both sides (left and right sides in Fig. 6) of the axis l of valve port 13.Thus, endless member 6 constitutes
" force application mechanism ".And, in the 3rd embodiment, for by the opening 61 of endless member 6
Cold-producing medium flow, the opposition side of wall portion 62 becomes big, therefore asymmetrical in the composition of endless member 6
Partial left and right directions, Fluid pressure produce pressure differential, to valve member 2 (needle-like portion 27) to side (with
The direction that axis l intersects) active force.Thereby, it is possible to suppress the vibration of valve member 2, can obtain with
First embodiment identical effect.
Fig. 8 is the sketch structure figure of the freeze cycle of embodiment.This freeze cycle 100 is used for room air
The air conditioners such as actuator.In fig. 8,10 is the pressure-operated valve of each embodiment, and 20 is vaporizer (room
Interior heat exchanger), 30 be condenser (outdoor heat exchanger), 40 is the expansion valve that cold-producing medium is throttled,
50 is compressor.Condenser 30 is flowed into by the cold-producing medium that compressor 50 have compressed, is entered by expansion valve 40
Row throttling, is flowed to compressor 50 after vaporizer 20, is sequentially circulated with this.Thus, formed indoor
Deng refrigeration.
Connect a side connector 11a of pressure-operated valve 10 in the discharge side line 50a of compressor 50, should
The secondary side connector 12a of pressure-operated valve 10 is connected with the secondary side connector 40a of expansion valve 40.Then,
When the pressure from the cold-producing medium that compressor 50 flows out becomes more than setting pressure, pressure-operated valve 10 action,
Make the secondary side connector 40a shunting of the cold-producing medium of high pressure to expansion valve 40.
In above each embodiment, entered with the pressure to the high pressure of the discharge side of the compressor of freeze cycle
It is illustrated as a example the pressure-regulating valve of row adjustment, but, the pressure-operated valve of the present invention also can be applied
That situation being controlled in the flowing of other convection cells.For example it is also possible to be used in following this kind of feelings
Condition, is arranged at the pipe arrangement that fluid is liquid, prevents the fluid-tight of pipe arrangement.
More than, referring to the drawings detailed narration is carried out to embodiments of the present invention, but specific structure is not
It is limited to these embodiments, the change etc. without departing from the design of the scope of the purport of the present invention is both contained in this
Bright.
Claims (8)
1. a kind of pressure-operated valve, its pressure according to the fluid of primary side and make valve member action,
Above-mentioned pressure-operated valve is characterised by,
This valve port is located at least a portion of the above-mentioned valve member that the valve port of the above-mentioned fluid that flows is opened and closed
Downstream, and possess force application mechanism, this force application mechanism is using the power of the fluid from the flowing of above-mentioned valve port, phase
Axis for this valve port exerts a force to side to this valve member.
2. pressure-operated valve according to claim 1 it is characterised in that
Above-mentioned force application mechanism is by above-mentioned valve member around above-mentioned axis non-rotationally-symmetric asymmetrical shape portion structure
Become.
3. pressure-operated valve according to claim 2 it is characterised in that
Above-mentioned valve member has: needle-valve, its opposed with above-mentioned valve port and from the upstream side of fluid towards downstream
Undergauge；And lobe, it is linked with the downstream of this needle-like portion, and above-mentioned asymmetrical shape portion is formed at
State lobe.
4. pressure-operated valve according to claim 2 it is characterised in that
Above-mentioned valve member has needle-like portion, and this needle-like portion is opposed with above-mentioned valve port and upstream side direction from fluid
Downstream undergauge, above-mentioned asymmetrical shape portion is formed at above-mentioned needle-like portion.
5. pressure-operated valve according to claim 1 it is characterised in that
Above-mentioned force application mechanism is non-rotating right around above-mentioned axis by being formed on the valve seat around above-mentioned valve port
The asymmetrical shape portion claiming is constituted.
6. pressure-operated valve according to claim 5 it is characterised in that
Above-mentioned asymmetrical shape portion is countersink region, and this countersink region is formed at the valve seat of the surrounding of above-mentioned valve port, and
It is formed at the position amesiality with respect to above-mentioned axis.
7. pressure-operated valve according to claim 1 it is characterised in that
Above-mentioned force application mechanism is made up of endless member, and this endless member is configured at the downstream of above-mentioned valve port, and
Have around above-mentioned axis non-rotationally-symmetric asymmetrical shape portion.
8. a kind of freeze cycle is it is characterised in that possess:
Compressor, it is compressed to the cold-producing medium as fluid；
Condenser；
Vaporizer；
Expansion valve, it makes cold-producing medium expand and reduce pressure between above-mentioned condenser and above-mentioned vaporizer；
And the pressure-operated valve any one of claim 1 to 7, it is connected to above-mentioned compressor
Discharge between side line and the secondary side line of above-mentioned expansion valve.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015143222A JP6367164B2 (en) | 2015-07-17 | 2015-07-17 | Pressure operated valve and refrigeration cycle |
| JP2015-143222 | 2015-07-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106352100A true CN106352100A (en) | 2017-01-25 |
| CN106352100B CN106352100B (en) | 2019-02-01 |
Family
ID=57843164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610551152.XA Active CN106352100B (en) | 2015-07-17 | 2016-07-13 | Pressure-operated valve and refrigerating circulation system |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6367164B2 (en) |
| CN (1) | CN106352100B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167459A (en) * | 2017-12-11 | 2018-06-15 | 浙江大学 | A kind of voltage stabilizing pin structure for being used to compensate in-flow inserted valve closing direction hydraulic power |
| CN110410542A (en) * | 2018-04-26 | 2019-11-05 | 北越工业株式会社 | Pressure retaining valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SG11201901267WA (en) | 2016-08-16 | 2019-03-28 | Fisher & Paykel Healthcare Ltd | Pressure regulating valve |
| JP6817914B2 (en) * | 2017-08-28 | 2021-01-20 | 株式会社鷺宮製作所 | Squeezer and refrigeration cycle system |
| CN108302030A (en) * | 2018-01-30 | 2018-07-20 | 浙江大农实业股份有限公司 | High pressure check valve suitable for cleaning machine high-pressure plunger pump |
| JP7384386B2 (en) * | 2019-11-11 | 2023-11-21 | 株式会社不二工機 | Expansion valve and refrigeration cycle equipment |
| CN113775794B (en) * | 2021-06-30 | 2023-09-26 | 荆门市格林美新材料有限公司 | Waste gas sprays atmospheric pressure protection device |
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| CN110410542A (en) * | 2018-04-26 | 2019-11-05 | 北越工业株式会社 | Pressure retaining valve |
| CN110410542B (en) * | 2018-04-26 | 2022-12-30 | 北越工业株式会社 | Pressure retaining valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106352100B (en) | 2019-02-01 |
| JP2017025975A (en) | 2017-02-02 |
| JP6367164B2 (en) | 2018-08-01 |
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