阅读说明：本技术 分配阀、阀芯以及制冷系统 (Distribution valve, valve core and refrigerating system ) 是由 王海翔 T.克尔明 于 2019-03-29 设计创作，主要内容包括：本申请公开了一种分配阀、阀芯以及制冷系统。分配阀包括：壳体,其包括阀腔、壳体入口和壳体出口,所述壳体入口、所述壳体出口分别与所述阀腔连通；设置在所述阀腔中的阀芯,所述阀芯能够围绕纵向轴线相对于所述壳体旋转,所述阀芯包括侧壁、芯腔、阀芯横向口和阀芯纵向口,所述阀芯横向口和所述阀芯纵向口分别与所述芯腔连通,所述阀芯还包括位于上端的第一连接结构和位于下端的第二连接结构,所述第一连接结构和所述第二连接结构形状配合；以及设置在所述壳体与所述阀芯之间的中间构件,所述中间构件与所述壳体固定且相对于所述阀芯的侧壁密封,所述中间构件包括与所述壳体入口和/或所述壳体出口相对应的中间口,当所述阀芯横向口与所述壳体入口或所述壳体出口重叠时形成阀口,所述阀芯能够相对于所述中间构件转动使得所述阀芯横向口与所述中间口处于不同程度的叠合,从而改变所述阀口的开度。(The application discloses distribution valve, case and refrigerating system. The distribution valve includes: the shell comprises a valve cavity, a shell inlet and a shell outlet, and the shell inlet and the shell outlet are respectively communicated with the valve cavity; the valve core is arranged in the valve cavity, the valve core can rotate relative to the shell around a longitudinal axis, the valve core comprises a side wall, a core cavity, a valve core transverse port and a valve core longitudinal port, the valve core transverse port and the valve core longitudinal port are respectively communicated with the core cavity, the valve core further comprises a first connecting structure positioned at the upper end and a second connecting structure positioned at the lower end, and the first connecting structure and the second connecting structure are matched in shape; and an intermediate member disposed between the housing and the valve cartridge, the intermediate member being fixed to the housing and sealed with respect to a sidewall of the valve cartridge, the intermediate member including an intermediate port corresponding to the housing inlet port and/or the housing outlet port, the valve cartridge forming a valve port when the valve cartridge lateral port overlaps the housing inlet port or the housing outlet port, the valve cartridge being rotatable with respect to the intermediate member such that the valve cartridge lateral port overlaps the intermediate port to different degrees, thereby changing an opening degree of the valve port.)

1. A dispensing valve, characterized in that it comprises:

the valve comprises a shell (1) and a valve body (11), wherein the shell comprises a valve cavity (11), a shell inlet (12) and a shell outlet (13), and the shell inlet (12) and the shell outlet (13) are respectively communicated with the valve cavity (11);

the valve core (2) is arranged in the valve cavity (11), the valve core (2) can rotate around a longitudinal axis (Y) relative to the shell (1), the valve core (2) comprises a side wall (21), a core cavity (22), a valve core transverse port (23) and a valve core longitudinal port (24), the valve core transverse port (23) and the valve core longitudinal port (24) are respectively communicated with the core cavity (22), the valve core (2) further comprises a first connecting structure (32) located at the upper end and a second connecting structure (31) located at the lower end, and the first connecting structure (32) and the second connecting structure (31) are matched in shape;

and

an intermediate member (4) arranged between the housing (1) and the valve cartridge (2), the intermediate member (4) being fixed with the housing (1) and sealed with respect to a side wall (21) of the valve cartridge (2), the intermediate member (4) comprising an intermediate port (41) corresponding to the housing inlet (12) and/or the housing outlet (13),

when the lateral spool port (23) overlaps the housing inlet port (12) or the housing outlet port (13) to form a valve port, the spool (2) is rotatable relative to the intermediate member (4) such that the lateral spool port (23) and the intermediate port (41) overlap to different extents, thereby varying the degree of opening of the valve port.

2. Dispensing valve according to claim 1, characterized in that the valve cartridge comprises a connecting piece (3) with the first connecting structure (32) and the second connecting structure (31), the connecting piece (3) being fixedly or detachably connected to the valve cartridge (2).

3. The dispensing valve according to claim 1, characterized in that the side wall (21) comprises a ball-like section (211), the spool transverse port (23) being located at a position where the ball-like section (211) has a maximum diameter in a cross section perpendicular to the longitudinal axis (Y) of the spool (2), or the spool transverse port (23) being located at a maximum wall thickness of the ball-like section (211).

4. The dispensing valve according to claim 1, wherein the spool lateral port (23) comprises one or more sub-ports comprising a first section (231) penetrating the side wall (21).

5. The dispensing valve according to claim 4, wherein the sub-port further comprises a second section (232) extending perpendicularly to the longitudinal axis (Y) of the valve spool (2) starting from the first section (231), the second section (232) not penetrating the side wall (21), optionally the thickness of the side wall (21) at the second section (232) increases with distance from the first section (231), optionally the first section (231) is circular and the second section (232) is rectangular.

6. Dispensing valve according to claim 1, characterized in that it further comprises a sealing element (5), said sealing element (5) being mounted elastically pre-compressed between said intermediate member (4) and said housing (1).

7. Dispensing valve according to claim 1, characterized in that it comprises a drive member (6) which is connected in a rotationally fixed manner to the first connection (32) or the second connection (31) in order to transmit a torque which in turn rotates the valve cartridge (2).

8. The distribution valve of claim 1 including a plurality of valve spools, wherein the first connection structure of one valve spool is rotationally fixed connectable with the second connection structure of another valve spool to transmit torque.

9. The valve core (2) is characterized in that the valve core (2) comprises a side wall (21), a core cavity (22), a valve core transverse port (23) and a valve core longitudinal port (24), the valve core transverse port (23) and the valve core longitudinal port (24) are respectively communicated with the core cavity (22), the valve core (2) further comprises a first connecting structure (32) located at the upper end and a second connecting structure (31) located at the lower end, and the first connecting structure (32) and the second connecting structure (31) are matched in shape.

10. A refrigeration system comprising a compressor in communication with the housing inlet, a heat exchanger in communication with the housing outlet, and the distribution valve of any one of claims 1-8.

Technical Field

The present application relates to the field of valves, and in particular, to a distributor valve, a valve cartridge and a refrigeration system with such a distributor valve.

Background

Expansion valves are often provided in fluid flow paths, particularly in refrigerant system flow paths, to control fluid flow. Common expansion valves are primarily in the form of needle valves. In a fluid flow path including a branch, it is a common design to provide two or more flow valves to control the flow rate of each flow path separately.

Disclosure of Invention

The main technical problem that this application will be solved is that the flow valve is in large quantity and the flexibility is poor.

To solve the above technical problem, the present application provides a dispensing valve, which includes:

the shell comprises a valve cavity, a shell inlet and a shell outlet, and the shell inlet and the shell outlet are respectively communicated with the valve cavity;

the valve core is arranged in the valve cavity, the valve core can rotate relative to the shell around a longitudinal axis, the valve core comprises a side wall, a core cavity, a valve core transverse port and a valve core longitudinal port, the valve core transverse port and the valve core longitudinal port are respectively communicated with the core cavity, the valve core further comprises a first connecting structure positioned at the upper end and a second connecting structure positioned at the lower end, and the first connecting structure and the second connecting structure are matched in shape; and

an intermediate member disposed between the housing and the valve cartridge, the intermediate member being fixed with the housing and sealed with respect to a sidewall of the valve cartridge, the intermediate member including an intermediate port corresponding to the housing inlet port and/or the housing outlet port,

when the lateral port of the valve core overlaps with the housing inlet or the housing outlet, a valve port is formed, and the valve core can rotate relative to the intermediate member to enable the lateral port of the valve core and the intermediate port to be overlapped to different degrees, so that the opening degree of the valve port is changed.

On the other hand this application provides a case, it includes lateral wall, core chamber, the horizontal mouth of case and the vertical mouth of case, the horizontal mouth of case with the vertical mouth of case respectively with the core chamber intercommunication, the case still includes the first connection structure that is located the upper end and the second connection structure that is located the lower extreme, first connection structure with the second connection structure form fit.

In yet another aspect the present application provides a refrigeration system including a compressor in communication with the housing inlet, a heat exchanger in communication with the housing outlet, and a distribution valve.

According to the technical scheme of the application, the connecting piece connected with the valve cores in a rotation-resistant manner comprises the connecting bulges and the connecting depressions which are matched in shape, so that a plurality of valve cores in the distribution valve can be connected in a rotation-resistant manner through the connecting bulges and the connecting depressions, different valve cores correspond to different heat exchangers, and different heat exchangers can be controlled through one distribution valve; in addition, the valve core transverse port of each valve core can be flexibly designed according to the control requirement of the heat exchanger, on one hand, the number of the valve cores only needs to be increased or reduced when the number of the heat exchangers needing to be controlled is changed, on the other hand, the design of the valve core transverse port of a single valve core only needs to be changed when the control requirement of the heat exchanger needing to be controlled is changed, and therefore high flexibility is brought to the design and application of the distribution valve.

Drawings

The disclosure of the present application is explained with reference to the drawings. It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the application. In the drawings, like reference numerals are used to refer to like parts unless otherwise specified. Wherein:

fig. 1 shows schematically in an exploded view a dispensing valve according to one embodiment of the present application;

FIG. 2 schematically shows the dispensing valve of FIG. 1 in a cross-sectional view;

FIG. 3 schematically shows a valve cartridge of the dispensing valve of FIG. 1 in a cross-sectional view;

figure 4 schematically shows in cross-section a dispensing valve according to another embodiment of the present application;

figure 5 schematically shows in cross-section a dispensing valve according to yet another embodiment of the present application;

fig. 6 schematically illustrates in perspective view an assembly formed using a plurality of valve cartridges according to the present application.

Detailed Description

Referring to fig. 1 to 3, a distribution valve according to an embodiment of the present application includes a housing 1 including a valve chamber 11, a housing inlet 12 and a housing outlet 13, where the housing inlet 12 and the housing outlet 13 are respectively communicated with the valve chamber 11, so that a fluid to be distributed, such as a cooling medium, can sequentially flow through the housing inlet 12, the valve chamber 11 and the housing outlet 13. The distribution valve further comprises a valve spool 2 arranged in said valve chamber 11, said valve spool 2 being rotatable relative to said housing 1 about a longitudinal axis Y. The valve core 2 comprises a side wall 21, a core cavity 22, a valve core transverse port 23 and a valve core longitudinal port 24, and the valve core transverse port 23 and the valve core longitudinal port 24 are respectively communicated with the core cavity 22. The valve cartridge 2 further comprises a first connecting structure 32 at an upper end and a second connecting structure 31 at a lower end, the first connecting structure 32 and the second connecting structure 31 being form-fit. "form-fitting" means that, for example in the case of a plurality of valve spools, the first connection structure of one valve spool can be connected in a rotationally fixed manner to the second connection structure of another valve spool in order to transmit torque; or a first connection (or second connection) of, for example, a valve slide can be connected in a rotationally fixed manner to a second connection (or first connection) of the drive element in order to transmit torque. Illustratively, the valve cartridge includes a connector with the first and second connection structures. For example, the valve cartridge 2 further comprises a connecting piece 3 connected in a rotationally fixed manner thereto, the connecting piece 3 comprising a connecting projection (second connecting structure) 31 and a connecting recess (first connecting structure) 32, the connecting projection 31 and the connecting recess 32 being form-fitting. For example, the coupling protrusion 31 is configured as a rectangular pin, and the coupling recess 32 is configured as a rectangular hole. The connecting piece 3 is fixedly connected with the valve core 2, for example, the connecting piece 3 and the valve core 2 are integrally formed; alternatively, the connecting element 3 is detachably connected to the valve slide 2, for example, the connecting element 3 can be inserted into a bearing seat in the valve slide 2. Furthermore, the distribution valve comprises an intermediate member 4 arranged between the housing 1 and the valve cartridge 2, the intermediate member 4 being fixed to the housing 1 and sealed with respect to the side wall 21 of the valve cartridge 2, the intermediate member 4 comprising an intermediate port 41 corresponding to the housing inlet 12 and/or the housing outlet 13 (e.g. the intermediate port 41 overlapping the housing inlet 12 and/or the housing outlet 13). When the spool lateral port 23 overlaps the housing inlet port 12 or the housing outlet port 13 to form a valve port, the spool 2 can rotate relative to the intermediate member 4 such that the spool lateral port 23 and the intermediate port 41 overlap to different degrees, thereby changing the opening of the valve port. In this embodiment, the spool lateral port 23 includes a first spool lateral port 233 and a second spool lateral port 234, the first spool lateral port 233 being capable of communicating with the first housing outlet 131 through a first intermediate port 411 in the intermediate member 4 (forming a first valve port), the second spool lateral port 234 being capable of communicating with the second housing outlet 132 through a second intermediate port 412 in the intermediate member 4 (forming a second valve port), and the lower spool longitudinal port 24 being in direct communication with the housing inlet 12.

The dispensing valve further comprises a sealing member 5, which sealing member 5 is mounted elastically pre-compressed between the intermediate member 4 and the housing 1. In the illustrated embodiment, seals 5 are provided between the first intermediate port 411 and the first housing outlet 131 and between the second intermediate port 412 and the second housing outlet 132.

The distributor valve further comprises a drive element 6, which is connected in a rotationally fixed manner to the first connection structure 32 or the second connection structure 31 in order to transmit torque. For example, the drive element 6 is positively engaged with the coupling recess 32 of the coupling element 3 (which may of course also be provided positively engaged with the coupling projection 31 of the coupling element 3) and thereby drives the valve cartridge 2 in rotation. In the case where the driver 6 is form-fitted to the connection recess 32 of the connector 3, the connection projection 31 end of the spool 2 may serve as an inlet for the fluid, and a larger flow rate may be possible than in the case where the connection recess 32 end of the spool 2 serves as an inlet for the fluid.

The housing 1 has a top opening to allow the intermediate member 4 and the valve cartridge 2 to be mounted into the housing 1, which is then closed by a cover 7, where a pressure plate 8 and a sealing ring 9 are also arranged for supporting and sealing the driver 6. The valve element 2 may be connected to a driving device such as a stepping motor through a driving member 6, and the driving device may be further controlled by a controller, whereby the rotation angle of the valve element 2 with respect to the housing 1 may be precisely controlled. In some embodiments, the spool 2 may rotate 360 degrees relative to the housing 1; in other embodiments, the valve cartridge 2 can only rotate a limited degree, such as only in the range of 0 to 180 or other suitable range.

When the valve body 2 rotates relative to the valve body, the overlap state of the first valve body lateral port 233 and the first intermediate port 411 changes, thereby changing the first valve port opening degree; similarly, the overlap state of the second spool lateral port 234 and the second intermediate port 412 is changed, thereby changing the opening degree of the second valve port. In addition, since the intermediate member 4 is fixed relative to the housing 1, during rotation of the spool 2, the first intermediate port 411 remains in communication with the first housing outlet 131, while the second intermediate port 412 remains in communication with the second housing outlet 132. Fluid entering through the housing inlet 12 and the lower spool longitudinal port 24 is split based on the degree of opening of the first and second ports and exits from the first and second ports in a certain proportion. The opening degrees of the first valve port and the second valve port and the angular position of the valve core 2 relative to the housing 1 have a one-to-one correspondence relationship, which can be obtained through simulation or actual tests, so that the proportion and the flow rate of the fluid flowing out of the first valve port and the second valve port can be adjusted by adjusting the rotation angle of the valve core 2 relative to the housing 1. The first valve port and the second valve port can be respectively connected with two branches at the downstream, so that the distribution valve according to the embodiment realizes the flow distribution control of the two branches through a single valve. The adjustability of the flow distribution can be achieved by designing the shape and position of the first housing outlet 131 and the first spool lateral port 233 and the second housing outlet 132 and the second spool lateral port 234, respectively, etc.

The spool lateral port 23 includes one or more sub-ports including a first section 231 that penetrates the sidewall 21. The sub-port may also comprise a second section 232 extending perpendicularly to the longitudinal axis Y of the valve slide 2, starting from the first section 231, the second section 232 not penetrating the side wall 21. Optionally, the thickness of the sidewall 21 at the second section 232 increases with distance from the first section 231, facilitating continuous control of the change in flow. Optionally, the first section 231 is circular and the second section 232 is rectangular. In alternative embodiments, the first and second sections 231, 232 in the sub-ports of the spool 2 may also have other suitable shapes. The number and position of the sub-ports can be changed according to actual requirements. The design of the position and number of different individual ports or sub-ports allows different flow distributions. With this arrangement, when the spool 2 is rotated relative to the housing 1, there are many cases, such as when the first section 231 of the sub-port fully or partially overlaps the first housing outlet 131, then the cross-sectional area of the first valve port is substantially equal to the overlapping portion area; also for example, when the second section 232 of the sub-port overlaps the first housing outlet 131, then fluid flows out along the second section 232 of the sub-port, which now defines a first valve port having a smaller cross-sectional area. This configuration enables a wide range of proportioning and fine adjustments between the first and second ports of the distributor valve.

The side wall 21 comprises a ball-like section 211, the cartridge transverse port 23 being located at the position where the ball-like section 211 has the largest diameter in a cross-section perpendicular to the longitudinal axis Y of the cartridge 2, or the cartridge transverse port 23 being located at the largest wall thickness of the ball-like section 211, in order to provide better sealing. In this embodiment, the center point or center line of the sub-port is located in the center line of the up-down symmetry of the side wall 21 of the spool 2. It will be appreciated that the cooperation of the intermediate member 4 and the valve spool 2 having the ball-like section 211 enables the intermediate member 4 to wrap around the valve spool 2, achieving a good seal during the rotation process of the valve spool 2.

The distribution valve includes a plurality of valve cartridges (see fig. 5 and 6), in which the coupling projection of the coupling piece of one valve cartridge is capable of being form-fitted with the coupling recess of the coupling piece of the other valve cartridge. For example, the connecting projections are configured as rectangular pins and the connecting recesses as rectangular holes, wherein the rectangular pins of the connecting pieces of one valve core can be inserted into the rectangular holes of the connecting pieces of the other valve core, so that the two valve cores are connected in a rotationally fixed manner, and the rotation of one valve core can drive the rotation of the other valve core.

Referring to fig. 3, a valve element 2 according to an embodiment of the present disclosure includes a sidewall 21, a core chamber 22, a valve element lateral port 23, and a valve element longitudinal port 24, where the valve element lateral port and the valve element longitudinal port are respectively communicated with the core chamber 22, the valve element further includes a connecting member 3 connected to the connecting member in a rotation-proof manner, the connecting member 3 includes a connecting protrusion 31 and a connecting recess 32, and the connecting protrusion 31 and the connecting recess 32 are matched in shape.

Referring to fig. 4, in the distribution valve according to another embodiment of the present application, a housing inlet 12 and a housing outlet 13 are respectively located at left and right sides, and accordingly, a spool has two spool lateral ports, and a spool longitudinal port is sealed by a housing 1.

Referring to fig. 5, in the dispensing valve according to the present application, a housing inlet 12 is formed at the bottom of a housing 1, and a housing outlet 13 is formed at each of the lower left and upper right portions of the housing 1. The lower spool longitudinal port communicates with the housing inlet 12. The upper valve element is inserted into the connecting recess 32 of the lower valve element via the connecting projection 31, so that the two valve elements are connected in a rotationally fixed manner, so that they can be rotated synchronously by means of a drive 6. By means of different designs of the transverse port of the valve element on each valve element, different control of the fluid flow out of the two housing outlets 13 is achieved.

Referring to fig. 6, in an assembly formed by using a plurality of valve cores according to the present application, four valve cores are connected together in a rotation-proof manner by the connecting member 3, the valve core transverse ports on each valve core can be designed independently as required, and the number of valve cores can also be designed as required.

In the distributor valve according to the application, the connection 3 connected in a rotationally fixed manner to the valve cartridges 2 comprises form-fitting connection projections 31 and connection recesses 32 in such a way that a plurality of valve cartridges in the distributor valve can be connected in a rotationally fixed manner by means of the connection projections and the connection recesses, while different valve cartridges correspond to different heat exchangers, so that different heat exchangers can be controlled by means of one distributor valve; in addition, the valve core transverse port of each valve core can be flexibly designed according to the control requirement of the heat exchanger, on one hand, the number of the valve cores only needs to be increased or reduced when the number of the heat exchangers needing to be controlled is changed, on the other hand, the design of the valve core transverse port of a single valve core only needs to be changed when the control requirement of the heat exchanger needing to be controlled is changed, and therefore high flexibility is brought to the design and application of the distribution valve.

There is also provided a refrigeration system, such as may be used in an automotive or other environment, including a dispensing valve according to various embodiments of the present invention. The refrigeration system further includes a compressor in communication with the housing inlet, and a heat exchanger in communication with the housing outlet.