CN114279111A

CN114279111A - Throttle device

Info

Publication number: CN114279111A
Application number: CN202011038053.4A
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Sanhua Automotive Components Co Ltd
Current assignee: Zhejiang Sanhua Automotive Components Co Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2022-04-05

Abstract

The invention discloses a throttling device, which comprises a valve body and a valve core assembly, wherein the valve body is provided with an accommodating cavity, a first interface, a second interface, a first channel and a second channel, the first interface is communicated with the first channel, the second interface is communicated with the second channel, the throttling device is provided with a connecting body, the connecting body is provided with a first accommodating part and a first connecting channel, the valve core assembly comprises a valve seat, and the valve seat is provided with a valve port; the throttling device is provided with a first valve cavity and a second valve cavity, the outer wall surface corresponding to the first accommodating part of the connecting body is part of the inner wall surface corresponding to the second valve cavity, the second passage is communicated with the first valve cavity, the second valve cavity is communicated with the first passage and the first pore passage, and the valve port can be communicated with the first valve cavity and the first connecting passage. The throttle device is relatively compact.

Description

Throttle device

Technical Field

The invention relates to the technical field of fluid control, in particular to a throttling device.

Background

The heat management system comprises a heat exchanger and an expansion valve, wherein the heat exchanger and the expansion valve are integrated, an outlet in a valve body of the expansion valve is directly communicated with a refrigerant inlet of the heat exchanger, and a refrigerant outlet of the heat exchanger is communicated with other components in the heat management system through a pipeline.

Disclosure of Invention

The application aims to provide a throttling device with a compact structure.

A throttling device comprises a valve body and a valve core assembly, and is characterized in that the valve body is provided with an accommodating cavity, a first interface, a second interface, a first channel and a second channel, wherein the first interface is communicated with the first channel, the second interface is communicated with the second channel, the throttling device is provided with a connecting body, the connecting body is provided with a first accommodating part and a first connecting channel, the valve core assembly comprises a valve seat, and the valve seat is provided with a valve port;

a part of the valve core assembly is located in the accommodating cavity, at least a part of the valve seat is located in the first accommodating part, the throttling device is provided with a first valve cavity and a second valve cavity, an outer wall surface corresponding to the first accommodating part of the connecting body is a part of an inner wall surface corresponding to the second valve cavity, the second passage is communicated with the first valve cavity, the second valve cavity is communicated with the first passage and the first pore passage, and the valve port is communicated with the first valve cavity and the first connecting passage.

The throttling device is provided with a connecting body, the throttling device is further provided with a first valve cavity and a second valve cavity, one end, far away from the valve seat, of the second valve cavity is open, the outer wall face, corresponding to the first accommodating portion, of the connecting body is a part of the inner wall face, corresponding to the second valve cavity, of the connecting body, the second channel is communicated with the first valve cavity, the second valve cavity is communicated with the first channel and the first pore passage, the valve port can be communicated with the first valve cavity and the first connecting channel, and the structure is relatively compact.

Drawings

FIG. 1 is a schematic cross-sectional view of one embodiment of a heat exchange device;

FIG. 2 is a schematic view of the enlarged partial structure of FIG. 1;

FIG. 3 is a schematic view of the structure of the linker of FIG. 1;

FIG. 4 is a schematic cross-sectional view of another embodiment of a heat exchange device;

FIG. 5 is a schematic cross-sectional view of a throttling device in yet another embodiment of a heat exchange device;

FIG. 6 is a schematic cross-sectional view of a throttling device in yet another embodiment of a heat exchange device;

FIG. 7 is a schematic cross-sectional view of a throttling device in yet another embodiment of a heat exchange device;

FIG. 8 is a schematic cross-sectional view of a throttling device in yet another embodiment of a heat exchange device.

Detailed Description

The following description of the embodiments refers to the accompanying drawings.

Please refer to fig. 3-11. Heat exchange device 1000 includes a heat exchange unit 1100 and a throttling device 1200, and heat exchange unit 1100 includes a plate body 1101 and a heat exchange core 1102. The heat exchange core 1102 comprises a plurality of stacked plates, and the plate body 1101 and the plurality of stacked plates of the heat exchange core 1102 may be fixed by welding such that the heat exchange unit 1100 is formed with first and second fluid passages isolated from each other.

In the heat exchange core 1102, adjacent plates are stacked to form a first interplate channel or a second interplate channel, one side of each plate is a first interplate channel, and the other side of each plate is a second interplate channel. The fluid of the first plate interspaces may be capable of heat exchange with the fluid of the second plate interspaces. It should be noted that the relative non-communication of the first inter-plate passages and the second inter-plate passages means that there may be a communication after the heat exchange device 1000 becomes part of the thermal management system without communication within the heat exchange unit 1100.

In this embodiment, the first fluid channel of the heat exchange unit 1100 is a refrigerant flow channel, the second fluid channel is a coolant flow channel (not shown in the figure), the first fluid channel includes a first porthole 1103, a second porthole 1104, a plurality of first inter-plate channels and third portholes 1105, the heat exchange core further has a blocking portion 1106, and in the stacking direction of the plates, the first porthole 1103 and the second porthole 1104 are located at two sides of the blocking portion 1106. It should be noted here that the blocking portion 1106 may be of unitary construction with one of the plates or may be fixed to the plate.

As shown in fig. 1, the throttle device 1200 includes a valve body 1201 and a valve core assembly 1211, and the valve body 1201 and the plate body 1101 are fixed by welding, screwing, or the like. The valve body 1201 has a first port 1241 and a second port 1242, a first passage 1203, and a second passage 1204, wherein the first port 1241 communicates with the first passage 1203, and the second port 1242 communicates with the second passage 1204. The valve body 1201 also has a receiving cavity 1205 with two open ends, in this embodiment, the receiving cavity 1205 includes a first opening 1212 opening toward the heat exchange unit and a second opening 1213 opening away from the heat exchange unit, a portion of the valve core assembly 1211 extends into the receiving cavity 1205 through the second opening 1213 of the receiving cavity 1205, and the valve core assembly 1212 is sealingly fixed with the valve body 1201. In the embodiment, the first port 1241, the second port 1242 and the opening end of the accommodating cavity far away from the heat exchange unit are located on the same side, and the arrangement mode is simple to process. In further embodiments, the first and

second ports

1241 and 1242 are located on the same side of the valve body, and the open end of the receiving chamber remote from the heat exchange unit may be located on the other side of the valve body. Because the first connector 1241 and the second connector 1242 are located on the same side, when the external connection pipe is installed, only one pressing block can be arranged to fix the external connection pipe, so that the installation is convenient, and the occupied space is small.

The poppet assembly 1211 includes a poppet 1214 and a valve seat 1206, the valve seat 1206 having a valve port 1207. In this embodiment, the valve element is a needle, and the needle is movable relative to the valve seat 1206 to adjust the opening degree of the valve port 1207.

The throttling device 1200 further comprises a connector, the connector comprises a tube body 1210, a fixing portion 1209 and a connecting portion 1208, the fixing portion 1209 is abutted to the connecting portion 1208, of course, the fixing portion 1209 and the connecting portion 1208 can be of an integral structure, and the fixing portion 1209 and the connecting portion 1208 can also be fixedly connected.

At least one part of the connecting body extends into the accommodating cavity 1205 through the first opening 1212, and the fixing portion 1209 of the connecting body is fixed in a sealing manner with the corresponding wall portion of the accommodating cavity 1205, so that the throttling device is formed with a first valve cavity 1212 and a second valve cavity 1213, the first valve cavity 1212 and the second valve cavity 1213 are isolated from each other and are not communicated, and the second valve cavity 1213 is communicated with the first aperture 1103. And the first passage 1203 communicates with the second valve chamber 1213, the second passage 1204 communicates with the first valve chamber 1212, the first port 1241 and the second valve chamber 1213 communicate through the first passage 1203, and the second port 1242 and the first valve chamber 1212 communicate through the second passage 1204. The end of the second valve cavity, which is far away from the valve seat, is opened, the open end of the second valve cavity is communicated with the first pore passage, and the outer wall surface corresponding to the first accommodating part of the connecting body is a part of the inner wall surface corresponding to the second valve cavity.

In the present embodiment, the fixing portion 1209 and the connecting portion 1208 are provided separately. Specifically, a wall portion corresponding to the receiving cavity 1205 is formed with a first step surface 1215, the connecting portion 1208 includes a first fitting portion 1216 and a second fitting portion 1217, the second fitting portion 1217 protrudes from the first fitting portion 1216 in a direction toward the plate body 1101, and an upper end surface of the first fitting portion 1216 is fixed to or abuts against or contacts the first step surface 1313. The lower end surface of the first engaging portion 1216 is fixed to or abutted against the fixing portion 1209, and the fixing portion is fixed to or abutted against the board body.

A first accommodation portion 1218 and a second accommodation portion 1219 are formed in the second fitting portion 1217, and the second accommodation portion 1219 is adjacent to the plate body 1101 with respect to the first accommodation portion 1218. Wherein, a part of the valve seat 1206 stretches into the first containing part 1218, and the outer wall surface of the valve seat 1206 and the inner wall surface of the first containing part 1218 are arranged in a sealing manner, specifically, a sealing ring can be used for sealing.

A part of the tube body 1210 is located in the second accommodating portion 1219, and the outer wall surface of the tube body 1210 and the inner wall surface of the second accommodating portion 1219 are sealed and fixed, specifically, they may be sealed and fixed by riveting, welding, or the like. In this embodiment, the inner diameter of the second accommodating portion 1219 is smaller than the inner diameter of the first accommodating portion 1218, and the tube body 1210 has a large diameter portion, and the outer diameter of the large diameter portion is smaller than the inner diameter of the first accommodating portion 1218 and larger than the inner diameter of the second accommodating portion 1219, so that the large diameter portion of the tube body 1210 extends into and is accommodated in the connecting portion 1208.

A portion of the tube 1210 is located in the first bore, and a portion of the tube 1210 extends through the blocking portion 1106, such that the first connection passage 1220 in the tube 1210 is communicated with the second bore 1104, and when the valve port 1207 is opened by the valve spool 1214, the second port 1242 is communicated with the second bore 1104 after passing through the second passage 1204, the first valve chamber 1212, the valve port 1207, and the first connection passage 1220. So that the refrigerant flowing from the second port 1242 is throttled by the throttling device 1200 and then can directly flow into the second orifice 1104, which is far from the plate body 1101 with respect to the first orifice 1103. And the position of the blocking part 1106 and the length of the tube body 1210 can be changed according to the requirements of application scenarios, so as to adjust the lengths of the first hole and the second hole.

For example, as shown in the embodiment of fig. 4, the length of the first aperture 1103 is greater than that of the second aperture 1104 by arranging the blocking portion 1106 such that the second blocking portion is arranged in the first aperture, the third blocking portion is arranged in the third aperture to divide the first aperture into a plurality of sub-apertures and the third aperture into a plurality of sub-apertures, thereby extending the flow path of the fluid. In this embodiment, the number of the sub-orifices into which the first orifice is divided is the same as the number of the sub-orifices into which the third orifice is divided, so that the inlet of the refrigerant into the heat exchange unit and the outlet of the refrigerant out of the heat exchange unit can be regions corresponding to the same orifice, the restriction on the installation position of the throttling device is small, and installation controls can be saved.

At least part of fixed part 1209 is located and holds the chamber 1205, and the outer wall of fixed part 1209 is fixed with the internal face seal that holds the chamber 1205 and correspond, and mode seal such as spiro union, riveting, excessive cooperation, welding can be specifically passed through. The fixing portion 1209 further has a second connection passage 1221, the second connection passage 1221 communicates with the first passage 1203 and the second valve chamber 1213, and the first port 1241 can communicate with the first port 1103 through the first passage 1203, the second connection passage 1221, and the second valve chamber 1213, so that the refrigerant subjected to heat exchange in the heat exchange unit 1100 can flow out of the heat exchange device from the first port 1103 through the second valve chamber 1213, the second connection passage 1221, the first passage 1203, and the first port 1241.

In this embodiment, the fixing portion 1209 is fixed to the inner wall surface of the accommodating chamber 1205 by welding, and the heat exchange unit, the valve body, the fixing portion, the connecting portion, the pipe body, and the like are fixed together by brazing welding.

It should be noted that the plate 1101 may be various plates or similar plates located at the end side of the heat exchange unit 1100, such as an end plate, a bottom plate, a mounting plate, etc., where the plate 1101 does not necessarily completely cover the end side of the heat exchange unit 1100, and the plate 1101 may have a larger thickness, and may be modified according to actual needs, and the plate 1101 may be called as long as the portion capable of being fixed to the valve body is satisfied.

The heat exchange device 1000 specifically operates such that when the valve port 1207 is opened by the valve core 1214, the refrigerant can flow in from the second port 1242, can flow directly into the second port 1104 of the heat exchange unit 1100 after being throttled by the throttle device 1200, then flows in to the third port 1105 through a part of the inter-plate passages, and flows in to the first port 1103 through a part of the inter-plate passages after passing through the third port 1105, and when passing through the heat exchange unit 1100, the throttled refrigerant exchanges heat with the coolant in the coolant flow passage to absorb heat of the coolant, and then flows out of the heat exchange device through the second valve chamber 1213, the second connection passage 1221, the first passage 1203, and the first port 1241.

Fig. 5 shows a throttle device 1200 of another structure, which is different from the above-described embodiment, in which the fixing portion and the connecting portion are of an integral structure, the outer peripheral side of the first engaging portion extends toward the heat exchange unit 1100 to form the fixing portion, and a second valve chamber is formed between the inner wall portion of the fixing portion and the outer wall portion of the second engaging portion. Other structures of the fixing portion and the connecting portion are the same as or similar to those of the above embodiments, and are not described in detail here.

In this embodiment, to facilitate machining of the valve body 1201, the second passage 1204 is an inclined bore that communicates the second port 1242 with the first valve chamber 1212. And first passage 1203 includes a hole portion 1222 and a slot portion 1223, where hole portion 1222 is in communication with first port 1241 and slot portion 1223 opens toward plate 1101, and the opening of slot portion 1223 is closed by plate 1101.

In this embodiment, fixed part and connecting portion structure as an organic whole, and body and connecting portion be the components of a whole that can function independently structure, and this kind of structure is convenient for connector and valve body fixed, and the connector is fixed through brazing with integrative through valve body, heat exchange unit etc. to can set up the size of body according to the size in first pore, prevent that the body from stretching into first pore part and leading to the fluid pressure drop in first pore too big, the suitability is comparatively nimble.

Fig. 6 shows a further construction of a throttle device 1200, differing from the embodiment shown in fig. 5 in which the fixing portion and the connecting portion are of one piece construction and in which there is no tubular body. The second fitting portion 1217 of the connection portion extends to the heat exchange unit and passes through the blocking portion. As shown in fig. 7, the first engaging portion may also function as a fixing portion, in which case the thickness of the first engaging portion is greater than that of the first engaging portion in the embodiment shown in fig. 5, and the outer wall surface of the first engaging portion is fixed by interference fit, or by screwing, or by welding to the inner wall surface of the accommodating chamber. The installation of the connecting body in this way is relatively simple.

Fig. 8 shows a throttle device 1200 with another structure, which is different from the embodiment shown in fig. 5, in which a valve body 1201 and a connecting body are in a single structure, the valve body has a connecting portion 1208, the connecting portion 1208 has a first accommodating portion 1218, a portion of a valve seat 1206 is located in the first accommodating portion, a portion of the valve seat 1206 extends into the first accommodating portion 1218, an outer wall surface of the valve seat 1206 and an inner wall surface of the first accommodating portion 1218 are arranged in a sealing manner, the connecting portion 1208 further has a first connecting passage 1220, the first connecting passage 1220 is a portion of an accommodating chamber, and a first opening 1212 of the accommodating chamber communicates with a second duct 1104. The embodiment has fewer parts and is simple to mount.

It should be noted that: although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the present invention may be modified and equivalents may be substituted for those skilled in the art, and all technical solutions and modifications that do not depart from the spirit and scope of the present invention should be covered by the claims of the present invention.

Claims

1. A throttling device comprises a valve body and a valve core assembly, and is characterized in that the valve body is provided with an accommodating cavity, a first interface, a second interface, a first channel and a second channel, wherein the first interface is communicated with the first channel, the second interface is communicated with the second channel, the throttling device is provided with a connecting body, the connecting body is provided with a first accommodating part and a first connecting channel, the valve core assembly comprises a valve seat, and the valve seat is provided with a valve port;

a part of the valve core assembly is located in the accommodating cavity, at least a part of the valve seat is located in the first accommodating portion, the throttling device is provided with a first valve cavity and a second valve cavity, one end, far away from the valve seat, of the second valve cavity is open, the outer wall surface, corresponding to the first accommodating portion, of the connecting body is a part of the inner wall surface, corresponding to the second valve cavity, of the connecting body, the second passage is communicated with the first valve cavity, the second valve cavity is communicated with the first passage and the first pore passage, and the valve port can be communicated with the first valve cavity and the first connecting passage.

2. The throttle device of claim 1, wherein the receiving chamber has a first opening and a second opening that open toward the first passage, the connecting body and the valve body are of a separate structure, the connecting body includes a fixing portion and a connecting portion, the connecting portion has the first receiving portion, at least a portion of the connecting body extends into the receiving chamber through the first opening, and the fixing portion is sealingly fixed to a wall portion of the receiving chamber, such that the throttle device forms the first valve chamber and a second valve chamber, and the second valve chamber is located between the fixing portion and the connecting portion.

3. The throttle device according to claim 2, wherein the fixing portion is provided separately from the connecting portion, a first step surface is formed on a wall portion corresponding to the accommodating chamber, the connecting portion includes a first engaging portion and a second engaging portion, the second engaging portion protrudes from the first engaging portion, an upper end surface of the first engaging portion is fixed to or abuts against or contacts the first step surface, and a lower end surface of the first engaging portion is fixed to or abuts against the fixing portion.

4. The throttling device according to claim 3, wherein the outer wall surface of the fixing portion and the inner wall surface corresponding to the accommodating cavity are hermetically fixed in a screwing mode, a riveting mode, an over-fitting mode, a welding mode and the like, the fixing portion is provided with a second connecting passage, the second connecting passage is communicated with the first passage and the second valve cavity, and the first interface is communicated with the second valve cavity through the first passage and the second connecting passage.

5. The throttle device of claim 4, wherein the connecting body further has a tube body, the first connecting passage is located in the tube body, the first receiving portion and the second receiving portion are formed in the second fitting portion, the second receiving portion is close to the valve seat relative to the first receiving portion, a portion of the tube body is located in the second receiving portion, and an outer wall surface of the tube body and an inner wall surface of the second receiving portion are sealingly fixed.

6. The throttle device according to claim 5, wherein an inner diameter of the second housing portion is smaller than an inner diameter of the first housing portion, the pipe body has a large diameter portion having an outer diameter smaller than the inner diameter of the first housing portion and larger than the inner diameter of the second housing portion, and an outer wall surface of the pipe body and an inner wall surface of the second housing portion are welded or riveted.

7. The throttling device according to claim 2, wherein the fixing portion and the connecting portion are of an integral structure, a wall portion corresponding to the accommodating chamber is formed with a first step surface, the connecting portion comprises a first engaging portion and a second engaging portion, the second engaging portion protrudes from the first engaging portion, an upper end surface of the first engaging portion is fixed to or abutted against or in contact with the first step surface, an outer peripheral side of the first engaging portion extends in a direction away from the valve seat to form the fixing portion, and the second valve chamber is located between an inner wall surface of the fixing portion and an outer wall surface of the second engaging portion.

8. A flow restriction device according to any of claims 1-7, wherein the second opening, the first port and the second port are located on the same side of the valve body, the connecting body is integral with the valve body, the second passage is an inclined passage, and the first passage comprises a bore portion communicating with the first port and a groove portion communicating with the bore portion and the second valve chamber.

9. A throttling device according to any one of claims 1 to 7, wherein the connecting portion and the pipe body are of an integral structure, the fixing portion and the first engaging portion are of an integral structure, the outer wall surface of the first engaging portion and the inner wall surface of the accommodating cavity are fixed in an interference fit manner or in a screw joint manner or in a welding manner, the second opening, the first interface and the second interface are located on the same side of the valve body, the connecting body and the valve body are of an integral structure, the second channel is an inclined channel, the first channel comprises a hole portion and a groove portion, the hole portion is communicated with the first interface, and a part of the groove portion is the second valve cavity.