CN215059491U

CN215059491U - Stop valve and air conditioning system with same

Info

Publication number: CN215059491U
Application number: CN202120176857.4U
Authority: CN
Inventors: 陈狄永; 楼峰; 袁兴洋; 冯光华
Original assignee: Zhejiang Dunan Artificial Environment Co Ltd
Current assignee: Zhejiang Dunan Artificial Environment Co Ltd
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2021-12-07
Anticipated expiration: 2031-01-22

Abstract

The utility model relates to an air conditioning technology field especially relates to a stop valve and have its air conditioning system. The utility model provides a stop valve, which comprises a valve body, wherein a first circulation port is arranged on the valve body, a valve cavity and a valve port are arranged in the valve body, a valve core is arranged in the valve cavity, a supporting part is arranged in the valve body, the valve port is arranged at the supporting part, and the caliber of the valve port is d; the minimum thickness of the abutting part along the axial direction of the valve cavity is H, and the H satisfies the following relational expression: 0.1d ≦ H ≦ 0.4 d. The utility model also provides an air conditioning system, it includes above-mentioned stop valve. Compared with the prior art, the utility model has the advantages of: by enabling the aperture d of the valve port and the minimum thickness of the abutting portion to be H, the condition that H is less than or equal to 0.1d and less than or equal to 0.4d is met, and the larger the aperture d of the valve port is, the larger the torque for screwing the valve core is, so that the valve core has proper torque when being screwed towards the valve port, the valve core cannot be collapsed due to the fact that the thickness of the abutting portion is too thin, and the strength of the structure is enhanced.

Description

Stop valve and air conditioning system with same

Technical Field

The utility model relates to an air conditioning technology field especially relates to a stop valve and have its air conditioning system.

Background

The air conditioning system mainly comprises components such as a compressor, an indoor heat exchanger, an outdoor heat exchanger, a stop valve and the like, wherein the stop valve is mainly used for connecting an indoor unit and an outdoor unit and plays a role in controlling the on-off of a refrigerant flow path.

In the existing stop valve, the caliber of a valve port usually cannot reach a proper numerical value, and the overlarge valve port usually causes the torque for screwing the valve core to be increased, so that unnecessary cost is increased; and too small results in too thin a thickness of the abutting portion, and the valve element is easily crushed when being screwed down.

SUMMERY OF THE UTILITY MODEL

In view of this, to the above technical problem, the utility model provides a stop valve that fluid flow is smooth-going, pressure loss is little.

In order to solve the technical problem, the utility model provides a following technical scheme:

a stop valve comprises a valve body, wherein a first through hole is formed in the valve body, a valve cavity and a valve port are formed in the valve body, the valve port is located between the first through hole and the valve cavity, a valve core is arranged in the valve cavity, and the valve core can slide in the valve cavity to open/close the valve port; the valve body is internally provided with an abutting part, the valve port is arranged on the abutting part, and the caliber of the valve port is d; the minimum thickness of the abutting part along the axial direction of the valve cavity is H, and H satisfies the following relational expression: h is more than or equal to 0.1d and less than or equal to 0.4 d.

It can be understood that, the application makes the aperture d of the valve port and the minimum thickness of the abutting part H satisfy the condition that H is more than or equal to 0.1d and less than or equal to 0.4d, and the larger the aperture d of the valve port is, the larger the torque for screwing the valve core is, so that when the valve core is screwed towards the valve port, the proper torque is provided, and the valve core is not crushed due to the too thin thickness of the abutting part, and the strength and the reliability of the structure are enhanced.

In one embodiment, the abutting portion is provided with a step, and the valve core abuts against the step so as to close the valve port.

In one embodiment, the number of the steps is at least 2, one end of the valve core close to the valve port is provided with a sealing surface, and when the valve core moves towards the valve port and closes the valve port, the sealing surface abuts against at least 2 steps.

It will be appreciated that when the sealing face abuts at least 2 of the steps, at least 2 seals are formed, enhancing the seal and reducing the leak rate.

In one embodiment, the valve body is internally provided with an annular groove which is positioned on one side of the valve port close to the valve core and is communicated with a fluid passage in the valve cavity (13).

In one embodiment, the aperture of the annular groove is larger than the aperture d of the valve port.

It can be understood that, the volume of the flow channel cavity on both sides of the valve port is increased, so that the fluid has a more sufficient flowing space, the throttling effect generated when the fluid flows through the valve port is reduced, the pressure loss is further reduced, and the energy consumption loss is reduced.

In one embodiment, a junction of an inner wall of the first flow port and an inner wall of the valve port is provided with a recess, and the recess is located between the first flow port and the valve port.

It can be understood that, as the passage of the fluid is increased at the recess, when the fluid flows through the first and second flow ports, there is no obvious obstruction, i.e., no stepped flow passage is generated, thereby facilitating smooth passage of the fluid and reducing additional pressure loss caused by increased fluid resistance.

In one embodiment, the valve body further defines a second flow opening, the second flow opening has a first axis, the valve cavity has a second axis, the first axis and the second axis (131) form an included angle α, and the following relationship is satisfied: alpha is more than 30 degrees and less than 60 degrees.

It will be appreciated that this facilitates the machining of the abutment.

In one embodiment, a connecting pipe is connected to the end, away from the valve port, of the second circulation port, and a single joint is arranged at the end, away from the second circulation port, of the connecting pipe and is hermetically mounted on the connecting pipe; and a sealing cover is arranged at one end of the first circulation port, which is far away from the valve port, and the sealing cover is arranged at the first circulation port in a sealing manner.

It is understood that the single connector is used to connect the shut-off valve to an air conditioning system through the connection pipe, and the cap is used to prevent foreign materials such as dust, water, etc. from entering the first circulation port.

In one embodiment, the stop valve further comprises a filling piece, the valve body is provided with a mounting hole, the filling piece is hermetically arranged in the mounting hole, and the axis of the mounting hole is perpendicular to the plane formed by the first axis and the second axis.

It will be appreciated that the charge allows refrigerant to be charged into the refrigeration system of the split air conditioner through the charge when it is desired to charge the refrigerant.

The utility model discloses still provide following technical scheme:

an air conditioning system includes a shutoff valve.

Compared with the prior art, the utility model provides a stop valve, through making the bore d of valve port with the minimum thickness of support portion satisfies for H that 0.1d is less than or equal to H and is less than or equal to 0.4 d's condition, because the bore d of valve port is big more, then screws up the moment of torsion of case is big more, consequently can make like this work as the case orientation when the valve port is screwed up, have suitable moment of torsion, and can not because the thickness of support portion is too thin and is collapsed, has strengthened the intensity and the reliability of structure.

Drawings

Fig. 1 is a schematic structural view of a stop valve according to the present invention;

fig. 2 is a schematic structural diagram of another view angle of the stop valve provided by the present invention.

The symbols in the drawings represent the following meanings:

100. a stop valve; 10. a valve body; 101. an annular groove; 11. a first circulation port; 111. sealing the cover; 12. a second flow port; 121. a first axis; 122. taking over a pipe; 123. a single joint; 13. a valve cavity; 131. a second axis; 14. an abutting portion; 141. a step; 15. a valve port; 151. a recessed portion; 20. a valve core; 21. a sealing surface; 22. a seal member; 30. a bonnet; 40. and (4) filling the piece.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 2, the present invention provides a stop valve 100, wherein the stop valve 100 is disposed on a refrigerant circuit between an indoor unit and an outdoor unit of an air conditioning system, and is used for opening or closing the refrigerant circuit, and also can be used for vacuumizing or filling a refrigerant during maintenance of the air conditioner. Of course, in other embodiments, the shut-off valve 100 may be used in fields other than air conditioning systems, such as fluid piping, petrochemical industry, and aerospace.

Specifically, the stop valve 100 includes a valve body 10, a first circulation port 11 is formed in the valve body 10, a valve cavity 13 and a valve port 15 are formed in the valve body 10, the valve port 15 is located between the first circulation port 11 and the valve cavity 13, a valve core is arranged in the valve cavity, and the valve core can slide in the valve cavity to open/close the valve port; the valve body 10 is internally provided with an abutting part 14, the valve port 15 is arranged on the abutting part 14, and the caliber of the valve port 15 is d; the minimum thickness of the abutting portion 14 in the axial direction of the valve chamber 13 is H, and H satisfies the following relation: h is more than or equal to 0.1d and less than or equal to 0.4 d.

It should be noted that, in the existing shutoff valve, the aperture of the valve port usually does not reach a proper value, and an excessively large valve port usually causes an increased torque for tightening the valve core, which increases unnecessary cost; and too small results in too thin a thickness of the abutting portion, and the valve element is easily crushed when being screwed down. In the embodiment, the condition that the minimum thickness H of the abutting part 14 and the caliber d of the valve port 15 satisfy 0.1d ≦ H ≦ 0.4d is satisfied, and the larger the caliber d of the valve port 15 is, the larger the torque for screwing the valve element 20 is, so that when the valve element 20 is screwed towards the valve port 15, the appropriate torque is obtained, the valve element is not crushed due to the too thin thickness of the abutting part 14, and the strength and reliability of the structure are enhanced.

As shown in fig. 1 and 2, the valve body 10 is a main component of the stop valve 100, and different mechanical manufacturing methods are available for different pressure levels, in this embodiment, the valve body 10 is produced by a casting process, but in other embodiments, the valve body 10 may be produced by forging or other processes.

Specifically, the valve body 10 is made of metal, is suitable for industries such as refrigeration, water treatment, light industry, petroleum and chemical industry, and has good sealing performance.

Further, an annular groove 101 is formed in the valve body 10, the annular groove 101 is located on the side of the valve port 15 close to the valve element 20, and the annular groove 101 communicates with a fluid passage in the valve chamber 13.

Specifically, the aperture of the annular groove 101 is larger than the aperture d of the valve port 15, the aperture d of the valve port 15 is usually smaller than the diameters of the first through hole 11, the second through hole 12 and the valve cavity 13, and the annular groove 101 and the first through hole 11 are respectively arranged on two sides of the valve port 15, so that the volume of the flow channel cavity on two sides of the valve port 15 is increased, the fluid has a more sufficient flowing space, the throttling effect of the fluid when flowing through the valve port 15 is reduced, the pressure loss is further reduced, and the energy consumption loss is reduced.

Further, a bonnet 30 is further arranged at one end, away from the valve port 15, of the valve body 10, and the bonnet 30 and the valve body 10 are in threaded fit, so that a metal hard seal is formed between the bonnet 30 and the valve body 10, and the sealing performance of the stop valve 100 is ensured.

As shown in fig. 1, the abutting portion 14 is provided with at least 2 steps 141, one end of the valve core 20 close to the valve port 15 is provided with a sealing surface 21, and when the valve core 20 moves towards the valve port 15 and closes the valve port 15, the sealing surface 21 abuts against the at least 2 steps 141; so when sealing face 21 is leaned on at least 2 steps 141, at least 2 times of sealing is formed, the sealing performance is enhanced, and the leakage rate is reduced.

Preferably, in the present embodiment, the shape of the sealing surface 21 is preferably a conical sealing surface, so that the sliding degree of the valve core 20 into the valve port 15 is increased, the sealing load of the valve core 20 will be increased, and the elastic-plastic deformation of the conical sealing surface 21 will also be increased, thereby improving the sealing performance of the product and reducing the leakage rate; of course, in other embodiments, the sealing surface 21 may take other shapes, and is not limited herein.

It should be noted that, since the abutting portion 14 is provided with at least 2 steps 141, that is, the number of the steps 141 may be 2, 3, 4 or even more, which is not limited herein; in the present embodiment, the number of the steps 141 is 2, and the abutting point between the sealing surface 21 and the step 141 is 2, and the minimum thickness H of the abutting portion 14 described in this application is specifically the minimum thickness of the abutting point of the abutting portion 14 close to the valve port along the axial direction of the valve chamber 13.

Further, a sealing element 22 is arranged between the valve core 20 and the cavity wall of the valve cavity 13, so that the sealing performance of the valve core 20 in the movement of the valve cavity 13 is ensured, and the leakage rate is reduced.

Optionally, in this embodiment, the material of the sealing member 22 may be rubber or plastic, so that a soft seal is formed between the valve element 20 and the valve body 10, and the valve has the characteristics of simple structure, small volume, light weight, and the like.

In this embodiment, the aperture d of the valve port 15 is adapted to the diameter of the first through hole 11, the valve port 15 is directly adjacent to the first through hole 11, the fluid can directly flow into the valve port 15 along the first through hole 11, and the fluid flows into the valve port 15 after flowing into the first through hole 11 and passing through the transition inside the valve body 10.

As shown in fig. 1, a concave portion 151 is disposed at a connection portion between an inner wall of the first through hole 11 and an inner wall of the valve port 15, and the concave portion 151 is located between the first through hole 11 and the valve port 15, so that a channel of a fluid at the concave portion 151 is increased, and when the fluid flows through the first through hole 11 and the second through hole 12, there is no significant obstruction, that is, a stepped flow channel is not generated, thereby facilitating smooth passage of the fluid, and reducing extra pressure loss caused by increase of fluid resistance.

Furthermore, one end of the first circulation port, which is far away from the valve port, is provided with a sealing cover, the sealing cover is arranged on the first circulation port in a sealing manner, and the sealing cover is used for preventing impurities such as dust, water and the like from entering the first circulation port.

As shown in fig. 1, the valve body 10 further defines a second fluid opening 12, the second fluid opening 12 has a first axis 121, the valve cavity 13 has a second axis 131, the first axis 121 and the second axis 131 form an included angle α, and satisfy the following relation: 30 ° < α < 60 °, i.e. the angle α may be 40 °, 45 ° or 50 °, which may facilitate the machining of the abutment 14; of course, in other embodiments, the included angle α between the first axis 121 and the second axis 131 may be in other ranges, and is not limited herein.

Furthermore, one end, far away from the valve port, of the second circulation port is connected with a connecting pipe, one end, far away from the second circulation port, of the connecting pipe is provided with a single connector, the single connector is hermetically installed on the connecting pipe, and the single connector is used for connecting the stop valve in an air conditioning system through the connecting pipe.

It should be noted that, in the present embodiment, since the first circulation port 11 and the second circulation port 12 are substantially parallel, the path of the fluid has no large turn, the flow is relatively smooth, and the vortex is not easily generated, so that the pressure loss is small, and the energy consumption is reduced.

As shown in fig. 2, the stop valve 100 further includes an injection member 40, and the valve body 10 is provided with a mounting hole (not shown), the injection member 40 is sealingly disposed in the mounting hole, and an axis of the mounting hole is perpendicular to a plane formed by the first axis 121 and the second axis 131.

It will be appreciated that the charge 40 is such that when it is desired to charge refrigerant, refrigerant can be charged through the charge 40 into the refrigeration system of the split air conditioner.

The utility model also provides an air conditioning system (not shown), including stop valve 100.

The air conditioning system also has the advantages of the shut-off valve 100 described above.

When the size of the stop valve 100 is designed, the condition that the diameter d of the valve port 15 and the minimum thickness of the abutting portion 14 are H and satisfy 0.1d ≦ H ≦ 0.4d is met, and the larger the diameter d of the valve port 15 is, the larger the torque for screwing the valve element 20 is, so that when the valve element 20 is screwed towards the valve port 15, the appropriate torque is obtained, the valve element is not crushed due to the too thin thickness of the abutting portion 14, and the strength and the reliability of the structure are enhanced.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A stop valve comprises a valve body (10), wherein a first through hole (11) is formed in the valve body (10), a valve cavity (13) and a valve port (15) are formed in the valve body (10), the valve port (15) is located between the first through hole (11) and the valve cavity (13), a valve core (20) is arranged in the valve cavity (13), and the valve core (20) can slide in the valve cavity (13) to open/close the valve port (15);

the valve is characterized in that an abutting part (14) is arranged in the valve body (10), the valve port (15) is arranged on the abutting part (14), and the caliber of the valve port (15) is d; the minimum thickness of the abutting part (14) along the axial direction of the valve cavity (13) is H, and the H satisfies the following relational expression:

0.1d≤H≤0.4d。

2. a shut-off valve according to claim 1, characterised in that the abutment (14) is provided with a step (141), the spool (20) abutting against the step (141) to close the valve port (15).

3. A shut-off valve according to claim 2, characterized in that the number of steps (141) is at least 2, and that the valve element (20) has a sealing surface (21) at the end adjacent to the valve port (15), the sealing surface (21) abutting against at least 2 of the steps (141) when the valve element (20) is moved towards the valve port (15) and closes the valve port (15).

4. A shut-off valve according to claim 1, characterised in that the valve body (10) has an annular groove (101) therein, the annular groove (101) being located on the side of the valve port (15) adjacent the valve spool (20), and the annular groove (101) being in communication with a fluid passage in the valve chamber (13).

5. A shut-off valve according to claim 4, characterised in that the aperture of the annular groove (101) is larger than the aperture d of the valve port (15).

6. A shut-off valve according to claim 1, characterised in that the junction of the inner wall of the first through opening (11) and the inner wall of the valve port (15) is provided with a recess (151), the recess (151) being located between the first through opening (11) and the valve port (15).

7. The stop valve according to claim 1, wherein the valve body (10) further defines a second flow opening (12), the second flow opening (12) has a first axis (121), the valve cavity (13) has a second axis (131), the first axis (121) and the second axis (131) form an included angle α, and the following relationship is satisfied:

30°＜α＜60°。

8. a stop valve according to claim 7, characterized in that a connecting pipe (122) is connected to the end of the second flow opening (12) remote from the valve port (15), a single joint (123) is arranged at the end of the connecting pipe (122) remote from the second flow opening (12), and the single joint (123) is hermetically mounted on the connecting pipe (122); a sealing cover (111) is arranged at one end, away from the valve port (15), of the first circulation port (11), and the sealing cover (111) is arranged on the first circulation port (11) in a sealing mode.

9. The shut-off valve according to claim 7, characterized in that it further comprises an inflation piece (40), said valve body (10) being provided with a mounting hole, said inflation piece (40) being sealingly arranged in said mounting hole, and the axis of said mounting hole being perpendicular to the plane formed by said first axis (121) and said second axis (131).

10. An air conditioning system, characterized in that it comprises a shut-off valve according to any of claims 1-9.