CN116804523A - Plate heat exchanger - Google Patents
Plate heat exchanger Download PDFInfo
- Publication number
- CN116804523A CN116804523A CN202310772729.XA CN202310772729A CN116804523A CN 116804523 A CN116804523 A CN 116804523A CN 202310772729 A CN202310772729 A CN 202310772729A CN 116804523 A CN116804523 A CN 116804523A
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- Prior art keywords
- plate
- heat exchanger
- orifice
- plate heat
- pore canal
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- 239000011148 porous material Substances 0.000 claims abstract description 59
- 239000003507 refrigerant Substances 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The application discloses a plate heat exchanger, which comprises a plurality of plates stacked along the thickness direction of the plate heat exchanger, wherein the plates are stacked to form a first flow passage, a second flow passage and a throttling pore passage, the first flow passage and the second flow passage are mutually isolated in the plate heat exchanger, the throttling pore passage is communicated with the first flow passage, the first flow passage is used for circulating refrigerant, and the throttling pore passage is used for throttling the refrigerant. In the application, the plurality of plates of the plate heat exchanger are stacked to form the throttling pore canal, and the throttling pore canal is used for throttling the refrigerant, namely the plate heat exchanger is integrated with the throttling pore canal with throttling function, thereby being beneficial to the miniaturization design of products.
Description
Technical Field
The application relates to the technical field of heat exchange, in particular to a plate heat exchanger.
Background
In the related art, an expansion valve (or a throttling device) with a throttling channel is communicated with a plate heat exchanger through a pipeline, and the expansion valve and the pipeline both occupy a certain space, so that the combined occupied space of the plate heat exchanger and the expansion valve is large.
Disclosure of Invention
The application aims to provide a plate heat exchanger which is beneficial to miniaturization design.
In order to achieve the above purpose, the present application adopts the following technical scheme: the plate heat exchanger comprises a plurality of plates stacked along the thickness direction of the plate heat exchanger, wherein the plates are stacked to form a first flow passage, a second flow passage and a throttling pore passage, the first flow passage and the second flow passage are mutually isolated in the plate heat exchanger, the throttling pore passage is communicated with the first flow passage, the first flow passage is used for circulating refrigerant, and the throttling pore passage is used for throttling the refrigerant.
In the application, the plurality of plates of the plate heat exchanger are stacked to form the throttling pore canal, and the throttling pore canal is used for throttling the refrigerant, namely the plate heat exchanger is integrated with the throttling pore canal with throttling function, thereby being beneficial to the miniaturization design of products.
Drawings
FIG. 1 is a schematic view of an embodiment of a plate heat exchanger of the present application;
FIG. 2 is a schematic view in cross-section of an embodiment of a plate heat exchanger according to the application;
FIG. 3 is a schematic view of a plate heat exchanger of the present application in another angular section;
FIG. 4 is an exploded schematic view of an embodiment of a plate heat exchanger of the present application;
fig. 5 is a schematic view in cross-section of another embodiment of a plate heat exchanger according to the application.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with aspects of the application as detailed in the accompanying claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the terms first, second and the like used in the description and the claims do not denote any order, quantity or importance, but rather are used to distinguish one element from another. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one; "plurality" means two and more than two. Unless otherwise indicated, the terms "front," "rear," "lower," and/or "upper" and the like are merely for convenience of description and are not limited to one location or one spatial orientation. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded.
Hereinafter, a plate heat exchanger according to an exemplary embodiment of the present application will be described in detail with reference to the accompanying drawings. The features of the examples and embodiments described below may be supplemented or combined with one another without conflict.
An embodiment of a plate heat exchanger according to the application, as shown in fig. 1, comprises: the heat exchanger comprises a plurality of plates stacked along the thickness direction of the plate heat exchanger, wherein the plates are stacked to form a first flow passage B1, a second flow passage B2 and a throttling pore passage 5, the first flow passage B1 and the second flow passage B2 are mutually isolated in the plate heat exchanger, the throttling pore passage 5 is communicated with the first flow passage B1, the first flow passage B1 is used for circulating refrigerant, and the throttling pore passage 5 is used for throttling the refrigerant.
The plurality of plates of the plate heat exchanger are stacked to form the throttling pore canal 5, and the throttling pore canal 5 is used for throttling the refrigerant, namely the plate heat exchanger is integrated with the throttling pore canal 5 with throttling function, thereby being beneficial to the miniaturization design of products.
Referring to fig. 1 to 3, the plate heat exchanger includes a plurality of plates each having a substantially rectangular shape, the plurality of plates being stacked in a thickness direction of the plate heat exchanger. Optionally, the plate heat exchanger is used for realizing heat exchange between two fluids.
The plurality of plates include a top plate A3, a bottom plate (not shown), a plurality of first plates A1, and a plurality of second plates A2, the first plates A1 and the second plates A2 being alternately stacked in the thickness direction of the plate heat exchanger, the top plate A3 and the bottom plate being both located at the outermost sides of the thickness direction of the plate heat exchanger, the top plate A3 and the bottom plate being respectively located at opposite sides of the thickness direction of the plate heat exchanger.
The first flow channel B1 comprises a first pore canal 1, a second pore canal 2 and a plurality of first inter-plate channels 6, the first pore canal 1 and the second pore canal 2 are respectively communicated with the first inter-plate channels 6, the second flow channel B2 comprises a third pore canal 3, a fourth pore canal 4 and a plurality of second inter-plate channels 7, the third pore canal 3 and the fourth pore canal 4 are respectively communicated with the second inter-plate channels 7, and the first inter-plate channels 6 and the second inter-plate channels 7 are mutually isolated in the plate heat exchanger. The first inter-plate channel 6 is located between the front face of the second plate A2 and the opposite face of the adjacent first plate A1, and the second inter-plate channel 7 is located between the opposite face of the second plate A2 and the front face of the adjacent first plate A1. The first pore canal 1, the second pore canal 2, the third pore canal 3, the fourth pore canal 4 and the throttling pore canal 5 extend along the thickness direction of the plate heat exchanger, and the first pore canal 1 and the throttling pore canal 5 are arranged in parallel.
In this embodiment, the second duct 2, the third duct 3, the fourth duct 4 and the throttling duct 5 all have openings provided on the bottom plate, the other sides of the second duct 2, the third duct 3 and the fourth duct 4 are all blocked by the top plate A3, the other side of the throttling duct 5 is blocked by the top plate A3 or a plate in the middle, the second duct 2 has an opening provided on the top plate A3, and the other side of the second duct 2 is blocked by the bottom plate. The openings of the second pore canal 2, the third pore canal 3, the fourth pore canal 4 and the throttling pore canal 5 are arranged on the same side, so that the parts assembled with the plate heat exchanger are arranged on the same side, the integration is facilitated, the distance between the parts is shortened, and the occupied space is further reduced.
The first plate A1 and the second plate A2 each have a first orifice K1, a second orifice K2, a third orifice K3, a fourth orifice K4, and a fifth orifice K5, the first orifice K1 of the first plate A1 and the first orifice K1 of the second plate A2 being stacked to form a first orifice 1, the second orifice K2 of the first plate A1 and the second orifice K2 of the second plate A2 being stacked to form a second orifice 2, the third orifice K3 of the first plate A1 and the third orifice K3 of the second plate A2 being stacked to form a third orifice 3, the fourth orifice K4 of the first plate A1 and the fourth orifice K4 of the second plate A2 being stacked to form a fourth orifice 4, the fifth orifice K5 of the first plate A1 and the fifth orifice K5 of the second plate A2 being stacked to form a throttle orifice 5. The aperture of the fifth aperture K5 is smaller than the apertures of other apertures of the plate heat exchanger, so that the aperture K5 can realize the throttling function.
The throttle bore 5 communicates with the first bore 1, and the extension length of the throttle bore 5 is smaller than or equal to the extension length of the first bore 1 in the length direction of the plate heat exchanger.
Referring to fig. 2 and 4, in the present embodiment, the expansion length of the throttle bore 5 is equal to the expansion length of the first bore 1, and each of the first plate A1 and each of the second plates A2 has a fifth orifice K5. The plate heat exchanger has third inter-plate channels 8, the third inter-plate channels 8 being located between the front face of the top plate A3 and the back face of the plate adjacent thereto, the throttle openings 5 and the first openings 1 communicating with the third inter-plate channels 8, respectively. In this embodiment, the sheet adjacent to the top plate A3 is the first plate A1.
In some possible embodiments, the extension of the throttling channels 5 is equal to the extension of the first channels 1, each first plate A1 and each second plate A2 having a fifth orifice K5. In the region of the plate heat exchanger which is farther from the top plate A3, the fifth porthole K5 is isolated from the first inter-plate channel 6 and the second inter-plate channel 7; in the region of the plate heat exchanger closer to the top plate A3, the fifth porthole K5 communicates with the first inter-plate channel 6, and the fifth porthole K5 is isolated from the second inter-plate channel 7.
In some possible embodiments, referring to fig. 5, the extension of the throttling channels 5 is smaller than the extension of the first channels 1, the throttling channels 5 being in communication with the first channels 1 through at least one first inter-plate channel 6. In the region of the plate heat exchanger which is further from the top plate A3, the first plate A1 and the second plate A2 are provided with fifth portholes K5, and the fifth portholes K5 are isolated from the first inter-plate channels 6 and the second inter-plate channels 7, and in the region of the plate heat exchanger which is further from the top plate A3, neither the first plate A1 nor the second plate A2 is provided with fifth portholes K5.
It should be understood that the extension length of the orifice passage 5, and the aperture of the fifth orifice K5 are designed according to the required throttling capability, so long as the throttling function can be achieved, the present application is not limited.
In this embodiment, referring to fig. 2 and 4, the first plate A1 includes a first flange K51, the first flange K51 extends outwards from the peripheral edge of the fifth orifice K5 of the first plate A1, the first flange K51 is in sealing connection with the adjacent second plate A2, the first flange K51 isolates the throttling duct 5 and the second inter-plate channel 7, and the first flange K51 is of a hollow cylindrical structure. The second plate A2 comprises a second flanging K52, the second flanging K52 extends outwards from the periphery of a fifth orifice K5 of the second plate A2, the second flanging K52 is in sealing connection with the adjacent first plate A1, the second flanging K52 isolates the throttling duct 5 from the first inter-plate channel 6, and the first flanging K51 is of a hollow cylindrical structure. The first turn-ups K51 and the second turn-ups K52 are alternately arranged along the thickness direction of the plate heat exchanger, and the inner hollow areas of the first turn-ups K51 and the inner hollow areas of the second turn-ups K52 are communicated with each other, so that the throttle duct 5 is formed.
Referring to fig. 2, in the present embodiment, along the thickness direction of the plate heat exchanger and along the direction away from the top plate A3, the first flange K51 is in sealing connection with the adjacent second flange K52, and the second flange K52 is in sealing connection with the next adjacent first flange K51.
In some other embodiments, the first flange K51 may be in sealing connection with the flat plate area of the adjacent second plate A2, and the second flange K52 may be in sealing connection with the flat plate area of the next adjacent first plate A1.
Optionally, the first flange K51 and the second flange K52 are substantially tapered, so as to achieve installation positioning between the first flange K51 and the second plate A2 and between the second flange K52 and the first plate A1, and further, the tapered structure enables interference fit during installation, so that a sealing effect after welding can be ensured.
In some other embodiments, the first flange K51 may be omitted, and a sealing gasket or the like may be used to isolate the orifice passage 5 from the second plate-to-plate passage 7.
In some other embodiments, the second flange K52 may be omitted, and a sealing gasket or the like may be used to isolate the orifice passage 5 from the first plate-to-plate passage 6.
Based on the structure of the plate heat exchanger described above, in one possible embodiment, referring to fig. 1 to 4, when the plate heat exchanger is in an application state, one fluid enters the plate heat exchanger from the throttling hole channels 5, enters the first hole channels 1 after being throttled and cooled, then enters the second hole channels 2 along the plurality of first plate-to-plate channels 6, and finally flows out of the plate heat exchanger from the second hole channels 2; the other fluid enters the plate heat exchanger from the third pore canal 3, then enters the fourth pore canal 4 along the plurality of second plate-to-plate passages 7, finally flows out of the plate heat exchanger from the fourth pore canal 4, and the two fluids realize heat exchange in the plate heat exchanger.
In some possible embodiments, the above-mentioned plate heat exchanger is used as an economizer, and the fluid flowing in both the first flow channel B1 and the second flow channel B2 is a refrigerant. Specifically, the high-temperature and high-pressure refrigerant is divided into two paths: one of the two flows from the throttle bore 5 and the other flows from the third bore 3. The refrigerant flowing out of the second porthole 2 directly flows to the air-supplementing enthalpy-increasing inlet of the compressor, and the refrigerant flowing out of the fourth porthole 4 flows to the air inlet of the compressor after flowing through other parts of the system.
In some possible embodiments, the above-mentioned plate heat exchanger is used as an intermediate heat exchanger, the fluid flowing in both the first flow channel B1 and the second flow channel B2 being a refrigerant. Specifically, the high-temperature and high-pressure refrigerant flows in from the second orifice 2 and then flows out from the throttle orifice 5; the low-temperature low-pressure refrigerant flows in the second flow passage B2.
In some possible embodiments, the plate heat exchanger is used as a water-cooled heat exchanger, the fluid flowing in the first flow channel B1 is a refrigerant, and the fluid flowing in the second flow channel B2 is a cooling liquid.
The present application is not limited to the above-mentioned embodiments, but is not limited to the above-mentioned embodiments, and any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical matters of the present application can be made by those skilled in the art without departing from the scope of the present application.
Claims (10)
1. A plate heat exchanger, comprising: the heat exchanger comprises a plurality of plates stacked along the thickness direction of the plate heat exchanger, wherein the plates are stacked to form a first flow passage, a second flow passage and a throttling pore passage, the first flow passage and the second flow passage are mutually isolated in the plate heat exchanger, the throttling pore passage is communicated with the first flow passage, the first flow passage is used for circulating refrigerant, and the throttling pore passage is used for throttling the refrigerant.
2. A plate heat exchanger according to claim 1, wherein the first flow passages comprise a first porthole, a second porthole and a plurality of first plate interspaces, the first porthole and the second porthole being in communication with the first plate interspaces, respectively; the second flow passage comprises a third pore canal, a fourth pore canal and a plurality of second plate-to-plate passages, the third pore canal and the fourth pore canal are respectively communicated with the second plate-to-plate passages, and the first plate-to-plate passages and the second plate-to-plate passages are mutually isolated in the plate heat exchanger;
the first pore canal and the throttling pore canal extend along the thickness direction of the plate heat exchanger, the first pore canal and the throttling pore canal are arranged in parallel, the extending length of the throttling pore canal is smaller than or equal to that of the first pore canal, and the throttling pore canal is communicated with the first pore canal.
3. The plate heat exchanger of claim 2, wherein the plurality of plates comprises a plurality of first plates and a plurality of second plates, the first plates and the second plates being alternately stacked along a thickness direction of the plate heat exchanger; the first inter-plate channel is located between the front face of the second plate and the adjacent back face of the first plate, and the second inter-plate channel is located between the back face of the second plate and the adjacent front face of the first plate;
the first plate and the second plate each have a first orifice, a second orifice, a third orifice, a fourth orifice, and a fifth orifice, the first orifice of the first plate and the first orifice of the second plate are stacked to form the first porthole, the second orifice of the first plate and the second orifice of the second plate are stacked to form the second porthole, the third orifice of the first plate and the third orifice of the second plate are stacked to form the third porthole, the fourth orifice of the first plate and the fourth orifice of the second plate are stacked to form the fourth porthole, the fifth orifice of the first plate and the fifth orifice of the second plate are stacked to form the throttle porthole, and the aperture of the fifth orifice is smaller than the aperture of the first orifice, and the second porthole, the third porthole, and the fourth porthole each extend in the thickness direction of the plate heat exchanger.
4. A plate heat exchanger according to claim 3, wherein at least part of the first plate comprises a first flange extending outwardly from the perimeter of the fifth porthole of the first plate, the first flange isolating the throttle duct from the second plate interspaces; and/or the number of the groups of groups,
at least a portion of the second plate includes a second flange extending outwardly from a perimeter of the fifth aperture of the second plate, the second flange isolating the orifice passage from the first plate-to-plate passage.
5. A plate heat exchanger as claimed in claim 4, wherein the plate heat exchanger comprises the first flange extending in the thickness direction of the plate heat exchanger and the second flange being in sealing connection with the adjacent second plate, the second flange extending in the thickness direction of the plate heat exchanger and the second flange being in sealing connection with the adjacent first plate.
6. A plate heat exchanger according to claim 5, wherein the first flange is in sealing connection with the adjacent second flange in the thickness direction of the plate heat exchanger, the second flange is in sealing connection with the next adjacent first flange, and the first flange and the second flange are arranged alternately.
7. A plate heat exchanger according to any one of claims 3-6, wherein the plate heat exchanger comprises a top plate, which is located at the outermost side in the thickness direction of the plate heat exchanger, and wherein the plate heat exchanger has third plate interspaces, which are located between the front side of the top plate and the back side of the plate adjacent thereto;
the extension length of the throttling pore canal is equal to that of the first pore canal, and the throttling pore canal and the first pore canal are respectively communicated with the third inter-plate channel.
8. A plate heat exchanger according to any one of claims 3-6, wherein the throttle openings have an extension smaller than the extension of the first openings, the throttle openings being in communication with the first openings through at least one of the first plate interspaces.
9. A plate heat exchanger according to claim 1, wherein the inlet of the second flow channel and the inlet of the porthole are located on the same side of the plate heat exchanger.
10. A plate heat exchanger according to claim 1 or 9, wherein the inlet of the second flow channel and the outlet of the second flow channel are located on the same side of the plate heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310772729.XA CN116804523A (en) | 2023-06-27 | 2023-06-27 | Plate heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310772729.XA CN116804523A (en) | 2023-06-27 | 2023-06-27 | Plate heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116804523A true CN116804523A (en) | 2023-09-26 |
Family
ID=88080581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310772729.XA Pending CN116804523A (en) | 2023-06-27 | 2023-06-27 | Plate heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116804523A (en) |
-
2023
- 2023-06-27 CN CN202310772729.XA patent/CN116804523A/en active Pending
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