CN207514316U - Relief valve and air-conditioning system - Google Patents
Relief valve and air-conditioning system Download PDFInfo
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- CN207514316U CN207514316U CN201721358122.3U CN201721358122U CN207514316U CN 207514316 U CN207514316 U CN 207514316U CN 201721358122 U CN201721358122 U CN 201721358122U CN 207514316 U CN207514316 U CN 207514316U
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- fluid
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- relief
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Abstract
The utility model discloses a kind of relief valve and it is provided with the air-conditioning system of the relief valve, the relief valve includes valve body and the spool being arranged in the valve body, fluid inlet and fluid outlet are provided on the valve body, fluid inlet is connected with the high-pressure side of fluid；Fluid outlet is connected with the low-pressure side of fluid；When on high-tension side Fluid pressure is more than predetermined value, spool can move under the action of on high-tension side Fluid pressure so that fluid can be from high-pressure side aerial drainage to low-pressure side；Valve seat is further included, is provided at least two-stage relief hole that can connect the fluid inlet and fluid outlet on valve seat on the direction of the valve core movement, the series of the relief hole connection is different according to the difference of on high-tension side Fluid pressure.Relief valve in the application is suitable for the high pressure variation of fluid system, when high pressure changes in system, can ensure that relief valve has pressure release effect always, so as to systems stabilisation high pressure, allow system being capable of stable operation in high pressure.
Description
Technical field
The utility model is related to valve technology field, more particularly to a kind of relief valve and the air-conditioning system for being provided with the relief valve
System.
Background technology
Relief valve is usually used in unloading refrigerant reduction pressure in air-conditioning system, and principle is the high-pressure side that relief valve is connected to system
And low-pressure side, entrance connection high-pressure side, outlet connection low-pressure side；When system refrigerant pressure reaches certain value, relief valve is touched
Action, relief valve are opened, and high pressure refrigerant flows to system low-voltage side, reduce high-pressure side refrigerant so as to reduce system high pressure.It is existing
Relief valve relieving flowing volume is fixed, even if air-conditioning system high pressure gradually rises, pressure release effect is same, it is impossible to the high pressure of adaptive system
Variation, relief valve is equivalent to the effect of losing at this time.
Utility model content
In view of this, be to provide a kind of pressure release flow can be with the pressure of high pressure side liquid for one of the purpose of this utility model
Power increases and increased relief valve and the air-conditioning system for being provided with the relief valve.
In order to achieve the above objectives, on the one hand, the utility model adopts the following technical solution：
A kind of relief valve, including valve body and the spool that is arranged in the valve body,
Fluid inlet and fluid outlet are provided on the valve body, wherein,
The fluid inlet is connected with the high-pressure side of fluid；
The fluid outlet is connected with the low-pressure side of fluid；
When on high-tension side Fluid pressure is more than predetermined value, the spool can be under the action of on high-tension side Fluid pressure
Movement so that fluid can be from high-pressure side aerial drainage to low-pressure side；
Valve seat is further included, the fluid inlet can be connected by being provided on the direction of the valve core movement on the valve seat
With at least two-stage relief hole of fluid outlet, the grade for connecting the relief hole of the fluid inlet and the fluid outlet is several
It is different according to the difference of on high-tension side Fluid pressure.
Preferably, it when the on high-tension side Fluid pressure is less than or equal to the predetermined value, is let out described in the spool covering
Hole is pressed, blocks flowing of the fluid from high side to low side；
When the on high-tension side Fluid pressure is more than the predetermined value, the spool moves so that the fluid inlet,
Fluid outlet connects, and fluid can be flowed from high side to low side.
Preferably, it is arranged at intervals on the direction that at least two-stage relief hole is moved in the spool, the spool setting
For the displacement distance of the spool is bigger when the on high-tension side Fluid pressure is bigger.
Preferably, body cavity is provided in the valve body, the valve seat is arranged in the body cavity, the valve
Core can move between the valve body and valve seat.
Preferably, a part for the valve seat forms the rail plate of the spool movement.
Preferably, the valve seat is the first tubular construction being arranged on the valve body, first tubular construction it is interior
Portion is connected with the fluid outlet；And/or
The spool is band bottomless drum shape structure of the opening towards the valve seat, described on the moving direction of the spool
Fluid inlet is arranged on the open side of the spool.
Preferably, fluid cavity is provided between the end of the open side of the spool and the valve body, the fluid enters
Mouth is connected with the fluid cavity.
Preferably, the relief hole is arranged on the side wall of first tubular construction, when relief valve is in non-pressure release shape
During state, the relief hole is located at the inside of the spool.
Preferably, on the same axial position of the side wall of first tubular construction, multiple relief holes are provided with.
Preferably, be provided with cavity between the bottom with bottomless drum shape and the inner wall of valve body, in the cavity filled with
Pressed gas is either provided with the biasing member pressed gas or biasing member and applies to close to the fluid to the spool
The mobile bias force of mouth.
Preferably, the valve body includes cylindrical portion, and the valve seat is arranged in the cylindrical portion, the cylinder of the valve body
Shape part and valve seat coaxial arrangement, the spool is arranged between the cylindrical portion of the valve body and the valve seat, described
The end of valve seat can limit the spool.
On the other hand, the utility model adopts the following technical solution：
A kind of air-conditioning system is provided with above-mentioned relief valve on the refrigerant flow of air-conditioning system.
In relief valve provided by the utility model, it can be unloaded by setting at least two-stage relief hole to change relief valve
Flow is suitable for the high pressure variation of fluid system, especially air-conditioning system, and when high pressure is higher, unloading cold medium flux also corresponds to
Increase, when high pressure is relatively low, unloading cold medium flux is also corresponding to be reduced, and ensures that relief valve has pressure release effect always, so as to stability series
System high pressure so that system being capable of stable operation in high pressure.
Description of the drawings
By referring to the drawings to the description of the utility model embodiment, the above-mentioned and other mesh of the utility model
, feature and advantage will be apparent from, in the accompanying drawings：
Fig. 1 shows the appearance diagram of relief valve provided by the utility model；
Fig. 2 shows the sectional views of relief valve provided by the utility model；
Fig. 3 shows the A-A sectional views of Fig. 1；
Fig. 4 shows the C-C sectional views of Fig. 1.
Specific embodiment
The utility model is described below based on embodiment, but the utility model is not restricted to these implementations
Example.It is detailed to describe some specific detail sections below in the datail description of the utility model.To people in the art
The description of part can also understand the utility model completely without these details for member.In order to avoid obscuring the utility model
Essence, there is no narrations in detail for well known method, process, flow, element.
In addition, it should be understood by one skilled in the art that provided herein attached drawing be provided to explanation purpose, and
What attached drawing was not necessarily drawn to scale.
Unless the context clearly requires otherwise, otherwise throughout the specification and claims " comprising ", "comprising" etc. are similar
Word should be construed to the meaning included rather than exclusive or exhaustive meaning；That is, it is containing for " including but not limited to "
Justice.
In the description of the present invention, it is to be appreciated that term " first ", " second " etc. are only used for description purpose,
And it is not intended that instruction or hint relative importance.In addition, in the description of the present invention, unless otherwise indicated, it is " more
It is a " it is meant that two or more.
This application provides a kind of relief valve and it is provided with the air-conditioning system of the relief valve.
As shown in Figs. 1-3, the relief valve that the application provides includes valve body 1 and the spool 2 being arranged in the valve body, in institute
It states and fluid inlet 11 and fluid outlet 12 is provided on valve body 1, wherein, the fluid inlet 11 is connected with the high-pressure side of fluid
Logical, the fluid outlet 12 is connected with the low-pressure side of fluid.In this way, when on high-tension side Fluid pressure is more than predetermined value, institute
Stating spool 2 can move under the action of the Fluid pressure of the fluid high-pressure side so that fluid can from high-pressure side aerial drainage to
Low-pressure side, so as to fulfill the pressure release to high pressure side liquid.It is readily appreciated that, which is the Opening pressure of relief valve, that is,
The maximum pressure of fluid system where relief valve.Preferably, the fluid inlet 11 is arranged on the side wall of the valve body 1, stream
Body outlet 12 is arranged on the bottom wall of valve body 1, can facilitate the installation to relief valve.
Preferably, valve seat 3 is provided in the valve body 1, the fluid can be connected by, which being provided on the valve seat 3, enters
At least two-stage relief hole 31 of mouth 11 and fluid outlet 12, for example, 2 grades, 3 grades, 4 grades or 5 grades are provided with, it is shown in Fig. 2
In embodiment, it is provided with 3 grades of relief holes 31.In these relief holes 31, the series of connection is according on high-tension side Fluid pressure
Difference and it is different.Such as on high-tension side Fluid pressure is bigger, the series of the relief hole 31 of connection is more, in this way, the unit interval
The interior Fluid pressure that can be laid down is bigger.Therefore, the series of the relief hole 31 of setting is more, and the range for being capable of pressure release is got over
Greatly.The movement of above-mentioned spool 2, which preferably refers to spool, to move, and can cut relief hole 31 by the movement of the spool 2
It is disconnected, it can also connect relief hole 31, so as to switch between pressure release and pressurize.
In a preferred embodiment, the spool 2 can cover the valve seat 3, when the on high-tension side Fluid pressure
During less than or equal to the predetermined value, the spool 2 covers all relief holes 31, blocks stream of the fluid from high side to low side
It is dynamic；When the on high-tension side Fluid pressure is more than the predetermined value, the spool 2, which moves, causes the relief hole 31 to connect,
Fluid can be flowed from high side to low side.By covering of the spool 2 to valve seat 3, can realize under packing state, pressure release
The firm closing in hole 31, avoids fluid from leaking, and causes system operation unstable.
In the embodiment shown in Figure 2, spool 2 can upper and lower shown in Fig. 2 move up, three relief holes 31 exist
It is arranged at intervals on the direction that the spool 2 moves, the spool 2 is set as, described in when the on high-tension side Fluid pressure is bigger
The displacement distance of spool 2 is bigger.In this way, when on high-tension side Fluid pressure is bigger, the Fluid pressure for needing pressure release is bigger, together
When, for spool 2 under the action of the pressure of high pressure side liquid, the distance moved up is bigger, the number of relief hole 31 that can be connected
Amount is more, and the fluid laid down in the unit interval is more, enables to the quick aerial drainage of the high-pressure fluid in system, realizes to being
The quick protection of system.In the embodiment shown in Figure 2, the relief hole 31 is uniformly arranged on valve seat 3, other real
It applies in example, relief hole 31 can not also be uniformly arranged, such as the interval between the position relief hole 31 far from fluid inlet 11
It is smaller, that is to say, that the distance apart from fluid inlet 11 is more remote, and relief hole 31 is set closeer, in this way can be on high-tension side stream
When body pressure is higher, quick pressure release can be more realized.
As shown in Fig. 2, in a preferred embodiment, body cavity 13, the valve seat 3 are provided in the valve body 1
It is arranged in the body cavity 13, the spool 2 can move between the valve body 1 and valve seat 3.When 2 energy of spool
When enough moving, the valve seat 3 forms the rail plate that the spool 2 moves.This structure can realize the reliable fortune of spool 2
It is dynamic.
Specifically, as shown in Fig. 2, the valve seat 3 is the tubular being arranged on the valve body 1, which is preferably cylinder
Shape, the inside of the tubular are connected with the fluid outlet 12, and outside can be connected with fluid inlet 11.The tubular can be with valve
Body 1 is integrally formed, can also split molding, split molding after, be connected on the valve body 1, in this case, need to realize
The sealing of the link position of valve seat 3 and valve body 1, avoids fluid from leaking into low-pressure side from high-pressure side, causes system operation unstable.
The spool 2 is band bottomless drum shape of the opening towards the valve seat 3, and in embodiment as shown in Figure 2, the spool 2 is opening court
Band bottomless drum shape downwards, preferably cylindrical shape, inner wall are adapted with the outer wall of the valve seat 3.In the movement of the spool 2
On direction, the fluid inlet 11 is arranged on the open side of the spool 2.Preferably, in the end of the open side of the spool 2
Fluid cavity 14 is provided between the valve body 1, the fluid inlet 11 is connected with the fluid cavity 14, in this way can will be high
The fluid of side is pressed to introduce in the fluid cavity 14 so that the on high-tension side fluid can be acted on the end of the spool 2,
So that the spool 2 can move under the action of the on high-tension side fluid.
Preferably, the relief hole 31 is arranged on the side wall of the tubular valve seat 3, when relief valve is in non-pressure release state
When, the relief hole 31 is located at the inside of the spool 2 with bottomless drum shape, is blocked, closes by the spool 2 with bottomless drum shape, avoids
Fluid leaks.Preferably, sealing element (not shown) is provided between the inner wall of the spool 2 and the outer wall of valve seat 3, kept away
Exempt from fluid from the slot leakage between the spool 2 and valve seat 3.
As in Figure 2-4, it is preferable that in the same axial direction of side wall of tubular valve seat 3, (axial direction in the application refers to cylinder
The direction of the axis extension of shape valve seat) on position, it is provided with multiple relief holes 31, in embodiment shown in Fig. 4 there are two settings,
There are three can also setting, four or more, flowing is more uniform when can cause fluid drainage in this way, and relief valve is avoided to transport
Row is unstable.
As shown in Fig. 2, in a preferred embodiment, in the bottom of the spool 2 with bottomless drum shape and the inner wall of valve body 1
Between be provided with cavity 4,41 pressed gas of biasing member or partially is either provided in the cavity 4 filled with pressed gas
Part 41 is put to the spool 2 to apply to the bias force close to the fluid inlet 11 movement.Below for biasing member 41 is set,
The movement of spool 2 is illustrated.When the spool 2 under the action of the Fluid pressure of high-pressure side to far from fluid inlet 11 side
To it is mobile when, such as when top shown in Fig. 2 is moved, spool 2 needs to overcome the bias force of biasing member 41 to move, and may be such that valve
The movement of core 2 is more steady, also, when on high-tension side fluid pressure release is completed, spool 2 can return under the action of biasing member 41
Home position covers all relief holes 31, realizes the pressurize to system.The distance between multiple relief holes 31 can be according to need to unload
The pressure and biasing member of load specifically determines, can be specific according to the pressure and the elastic force of spring that need to unload when biasing member is spring
It determines so that system can also realize stable unloading in the pressure maximum that need to be unloaded.
Preferably, the valve body 1 includes cylindrical portion 15, and the valve seat 3 is arranged in the cylindrical portion 15, also,
The cylindrical portion 15 and the valve seat 3 of the valve body are coaxially disposed, that is to say, that the axis of the cylindrical portion 15 and valve seat 3
Point-blank.The spool 2 is arranged between the cylindrical portion 15 of the valve body and the valve seat 3, the end of the valve seat 3
Portion 32 can limit the spool 2.Specifically, as shown in Fig. 2, when the spool 2 is located at lower side position, the valve
The end 32 of seat 3 is resisted against on the inner wall of the spool 2, and can be moved to the lowermost position to spool 2 limits so that
The operation of relief valve is relatively reliable.
Relief valve in the application is suitable in any fluid system, is particularly suitable in air-conditioning system, the application also provides
A kind of air-conditioning system, the relief valve being provided on the refrigerant flow of air-conditioning system in the application, it is ensured that air-conditioning system it is steady
Fixed operation.
For setting up the structure of three-level relief hole 31 by the attached side shown in Figure 2 moved in the spool 2 below,
The course of work of relief valve in the application is illustrated.31 corresponding unloading pressure of above three relief hole is respectively A1,
A2, A3.Limit unloading pressure is A4, i.e. biasing member 41 cannot recompress corresponding pressure.When system high pressure be more than A1, less than etc.
When A2, relief hole 31 is exposed connection by high-tension side 2 upward sliding of fluid forces spool, and fluid is flow to from relief hole 31
Low-pressure side, so as to ensure that system high pressure is stablized.When system high pressure rises, change to more than A2, during less than or equal to A3, high pressure effluent
Body pushes spool 2 to continue to slide up, and second level relief hole 31 is opened connection, high pressure side liquid is flowed from second level relief hole 31
Low-pressure side is moved, two-stage relief hole causes discharge area to increase, and unloading Fluid Volume also increases, so as to ensure that system high pressure is stablized.
It when system high pressure continues to rise, changes to more than A3, during less than A4, high-pressure side fluid forces spool 2 continues to slide up, by
Three-level relief hole connects, and high-pressure fluid flow to low-pressure side from third pole relief hole, and current-carrying is unloaded in the discharge area increase of relief hole
Body flow increases, so as to ensure the high-voltage-stable of system.
In the application, the flow that relief valve can unload is changed by setting at least two-stage relief hole, is suitable for fluid
The high pressure variation of system, especially air-conditioning system, when high pressure is higher, unloading cold medium flux is also corresponding to be increased, when high pressure is relatively low
When, unloading cold medium flux is also corresponding to be reduced, and ensures that relief valve has pressure release effect always, so as to systems stabilisation high pressure, allows system energy
Enough stable operation.
For those skilled in the art it is easily understood that under the premise of not conflicting, above-mentioned each preferred embodiment can be free
Ground combination, superposition.
It should be appreciated that above-mentioned embodiment is only exemplary, and not restrictive, without departing from the utility model
In the case of basic principle, those skilled in the art can be directed to the various apparent or equivalent modification that above-mentioned details is made
Or replace, all it is included in the right of the utility model.
Claims (12)
1. a kind of relief valve, including valve body and the spool being arranged in the valve body, which is characterized in that
Fluid inlet and fluid outlet are provided on the valve body, wherein,
The fluid inlet is connected with the high-pressure side of fluid；
The fluid outlet is connected with the low-pressure side of fluid；
When on high-tension side Fluid pressure is more than predetermined value, the spool can be transported under the action of on high-tension side Fluid pressure
It is dynamic so that fluid can be from high-pressure side aerial drainage to low-pressure side；
Valve seat is further included, the fluid inlet and stream can be connected by being provided on the direction of the valve core movement on the valve seat
At least two-stage relief hole of body outlet, connects the series of the relief hole of the fluid inlet and the fluid outlet according to height
Press the difference of Fluid pressure of side and different.
2. relief valve according to claim 1, which is characterized in that
When the on high-tension side Fluid pressure is less than or equal to the predetermined value, the spool covers the relief hole, blocks stream
Body is from the flowing of high side to low side；
When the on high-tension side Fluid pressure is more than the predetermined value, the spool moves so that the fluid inlet, fluid
Outlet, fluid can be flowed from high side to low side.
3. relief valve according to claim 2, which is characterized in that
It is arranged at intervals on the direction that at least two-stage relief hole is moved in the spool, the spool is set as, the high pressure
The displacement distance of the spool is bigger when the Fluid pressure of side is bigger.
4. relief valve according to claim 3, which is characterized in that
Body cavity is provided in the valve body, the valve seat is arranged in the body cavity, and the spool can be in institute
It states and is moved between valve body and valve seat.
5. relief valve according to claim 4 a, which is characterized in that part for the valve seat forms the spool movement
Rail plate.
6. relief valve according to claim 4, which is characterized in that
The valve seat is the first tubular construction being arranged on the valve body, the inside of first tubular construction and the fluid
Outlet；And/or
The spool is band bottomless drum shape structure of the opening towards the valve seat, on the moving direction of the spool, the fluid
Entrance is arranged on the open side of the spool.
7. relief valve according to claim 6, which is characterized in that in the end of the open side of the spool and the valve body
Between be provided with fluid cavity, the fluid inlet is connected with the fluid cavity.
8. relief valve according to claim 6, which is characterized in that the relief hole is arranged on first tubular construction
On side wall, when relief valve is in non-pressure release state, the relief hole is located at the inside of the spool.
9. relief valve according to claim 8, which is characterized in that in the same axial direction of the side wall of first tubular construction
On position, it is provided with multiple relief holes.
10. relief valve according to claim 6, which is characterized in that in the bottom with bottomless drum shape and the inner wall of valve body
Between be provided with cavity, the biasing member pressed gas or biasing member are either provided with filled with pressed gas in the cavity
Apply to the spool to the bias force close to fluid inlet movement.
11. according to the relief valve described in one of claim 6-10, which is characterized in that the valve body includes cylindrical portion, described
Valve seat is arranged in the cylindrical portion, and the cylindrical portion of the valve body and valve seat coaxial arrangement, the spool are arranged on
Between the cylindrical portion of the valve body and the valve seat, the end of the valve seat can limit the spool.
12. a kind of air-conditioning system, which is characterized in that one of claim 1-11 institutes are provided on the refrigerant flow of air-conditioning system
The relief valve stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721358122.3U CN207514316U (en) | 2017-10-20 | 2017-10-20 | Relief valve and air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721358122.3U CN207514316U (en) | 2017-10-20 | 2017-10-20 | Relief valve and air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207514316U true CN207514316U (en) | 2018-06-19 |
Family
ID=62534866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721358122.3U Active CN207514316U (en) | 2017-10-20 | 2017-10-20 | Relief valve and air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207514316U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763260A (en) * | 2017-10-20 | 2018-03-06 | 珠海格力电器股份有限公司 | Relief valve and air-conditioning system |
-
2017
- 2017-10-20 CN CN201721358122.3U patent/CN207514316U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763260A (en) * | 2017-10-20 | 2018-03-06 | 珠海格力电器股份有限公司 | Relief valve and air-conditioning system |
| CN107763260B (en) * | 2017-10-20 | 2023-12-26 | 珠海格力电器股份有限公司 | Pressure relief valve and air conditioning system |
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