CN212566983U - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
- Publication number
- CN212566983U CN212566983U CN202021462968.3U CN202021462968U CN212566983U CN 212566983 U CN212566983 U CN 212566983U CN 202021462968 U CN202021462968 U CN 202021462968U CN 212566983 U CN212566983 U CN 212566983U
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- China
- Prior art keywords
- header
- heat exchanger
- heat exchange
- supply portion
- exchange tubes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000005192 partition Methods 0.000 description 6
- 239000003507 refrigerant Substances 0.000 description 4
- 238000010257 thawing Methods 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
An embodiment of the utility model discloses a heat exchanger. This heat exchanger includes: a header comprising opposing first and second ends and an inner cavity; the heat exchange tubes are arranged along the axial direction of the collecting pipe, and the end parts of the heat exchange tubes are connected with the collecting pipe; and a connection pipe including a connection portion and a supply portion connected to the connection portion and connected to the first end of the header, the supply portion being configured such that a flow direction of a heat exchange medium supplied to a predetermined number of heat exchange tubes through the inner cavity of the header is not parallel to an axis of the header, the predetermined number of heat exchange tubes being the predetermined number of heat exchange tubes counted from the first end of the header. Adopt according to the utility model discloses a heat exchanger can improve heat exchanger's performance.
Description
Technical Field
The embodiment of the utility model relates to a heat exchanger.
Background
The heat exchanger comprises a collecting pipe, a heat exchange pipe and a connecting pipe. When the heat exchanger is used as an evaporator of a heat pump unit, the connecting pipe is usually used as an outlet pipe of the heat exchanger. In the case of the heat exchanger as a condenser, the connection pipe serves as an inlet pipe of the heat exchanger.
Disclosure of Invention
It is an object of an embodiment of the present invention to provide a heat exchanger, whereby for example the performance of the heat exchanger can be improved.
An embodiment of the utility model provides a heat exchanger, this heat exchanger includes: a header comprising opposing first and second ends and an inner cavity; the heat exchange tubes are arranged along the axial direction of the collecting pipe, and the end parts of the heat exchange tubes are connected with the collecting pipe; and a connection pipe including a connection portion and a supply portion connected to the connection portion and connected to the first end of the header, the supply portion being configured such that a flow direction of a heat exchange medium supplied to a predetermined number of heat exchange tubes through the inner cavity of the header is not parallel to an axis of the header, the predetermined number of heat exchange tubes being the predetermined number of heat exchange tubes counted from the first end of the header.
According to an embodiment of the present invention, at least a part of the supply portion is inserted into the first end portion of the header, and the end surface of the supply portion, which is away from the end portion of the connection portion, is located at one side of the second end portion of the header, which is away from the first heat exchange tube, of the predetermined number of heat exchange tubes in the axial direction of the header.
According to the embodiment of the present invention, the supply portion is inserted into the first end portion of the header pipe, and the end surface of the end portion of the supply portion, which is away from the connection portion, is located between the first heat exchange pipe of the heat exchange pipes of the predetermined number to the last heat exchange pipe of the heat exchange pipes of the predetermined number in the axial direction of the header pipe.
According to an embodiment of the invention, the supply part of the connecting tube comprises an opening through the tube wall and/or at an end of the supply part remote from the connection part.
According to an embodiment of the invention, the cross section of the opening is parallel or inclined with respect to the axis of the collecting main.
According to the utility model discloses an embodiment, the axis of the supply part of connecting pipe is parallel with the axis of pressure manifold, perhaps the axis of the supply part of connecting pipe inclines for the axis of pressure manifold.
According to an embodiment of the invention, the end of the supply part of the connecting pipe remote from the connection part is closed, or the cross-sectional area of the end of the supply part of the connecting pipe remote from the connection part is smaller than the cross-sectional area of the other parts of the supply part of the connecting pipe.
According to an embodiment of the invention, the end face of said end of the supply part is inclined with respect to the axis of the collecting main.
According to an embodiment of the present invention, the end surface of the end of the supply portion remote from the connection portion faces the ends of the predetermined number of heat exchange tubes inserted into the header.
According to an embodiment of the invention, the axis of the supply part of the connecting pipe is inclined with respect to the axis of the collecting main.
According to an embodiment of the present invention, the axis of the supply portion of the connection pipe is inclined with respect to the axis of the header pipe in a direction from the first end to the second end of the header pipe toward the ends of the predetermined number of heat exchange tubes inserted into the header pipe.
According to an embodiment of the invention, the end surface of the end of the supply part remote from the connection part is inclined with respect to the axis of the supply part.
According to an embodiment of the invention, the end of the supply part of the connecting tube remote from the connection part is bent relative to the other parts of the supply part.
According to an embodiment of the present invention, an end of the supply portion of the connection pipe, which is away from the connection portion, is bent with respect to other portions of the supply portion toward ends of a predetermined number of heat exchange pipes inserted into the header.
According to the utility model discloses an embodiment, the heat exchanger still include: a baffle provided in the header, the baffle being provided at a side of the end of the supply part remote from the connection part, and the baffle allowing a part of the heat exchange medium supplied from the connection pipe to flow along the header to the side of the baffle remote from the supply part.
According to an embodiment of the invention, the cross-sectional area of the supply portion of the connecting pipe gradually increases in a direction from the first end to the second end of the collecting main.
According to an embodiment of the present invention, the axis of the supply portion of the connection pipe is inclined with respect to the axis of the header pipe in a direction from the first end to the second end of the header pipe toward the ends of the predetermined number of heat exchange tubes inserted into the header pipe.
According to the utility model discloses an embodiment, the heat exchanger is under the condition as the condenser, the connecting pipe is the import pipe of heat exchanger for input heat transfer medium to the heat exchanger.
According to an embodiment of the invention, the predetermined number is less than or equal to 10, or the supply part comprises a pipe section within the collecting main, the pipe section having a length in the axial direction of the collecting main, the number of heat exchange pipes within the range of the length being less than or equal to 10.
According to the utility model discloses an embodiment, the pressure manifold still has the setting and is in the end cover of the first end of pressure manifold, the supply part of connecting pipe with the end cover is connected or passes through opening in the end cover inserts in the pressure manifold.
According to the utility model discloses an embodiment, the insertion of connecting pipe the part of the inner chamber of pressure manifold is in the ascending length of axial direction of pressure manifold with the inner chamber of pressure manifold is in the ratio of the ascending length of axial direction of pressure manifold is less than 1/5.
With the heat exchanger according to an embodiment of the present invention, for example, the performance of the heat exchanger can be improved.
Drawings
Fig. 1 is a schematic front view of a heat exchanger according to an embodiment of the present invention;
fig. 2 is a schematic perspective view, partially in cross-section, of a heat exchanger according to an embodiment of the present invention;
fig. 3 is a schematic perspective view, partially in section, of a heat exchanger according to another embodiment of the present invention;
fig. 4 is a schematic perspective view, partially in cross-section, of a heat exchanger according to yet another embodiment of the present invention; and
fig. 5 is a schematic perspective view, partially in cross-section, of a heat exchanger according to yet another embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 to 5, a heat exchanger 100 according to an embodiment of the present invention includes: the collecting pipe 1 comprises a first end part 11, a second end part 12 and an inner cavity, wherein the first end part and the second end part are opposite; the heat exchange tubes 2 are arranged along the axial direction of the collecting tube 1, and the end parts 20 of the heat exchange tubes 2 are connected with the collecting tube 1; and a connection pipe 3, the connection pipe 3 including a connection portion 31 and a supply portion 32 connected to the connection portion 31 and connected to the first end 11 of the header 1, the supply portion 32 being configured such that a flow direction of a heat exchange medium supplied to a predetermined number of the heat exchange tubes 2 through the inner cavity of the header 1 is not parallel to an axis of the header 1, the predetermined number of the heat exchange tubes 2 being the predetermined number of the heat exchange tubes 2 counted from the first end 11 of the header 1. For example, the supply portion 32 is configured such that the flow direction of the heat exchange medium supplied to a predetermined number of the heat exchange tubes 2 is at an angle of more than 30 degrees with respect to the axis of the header 1. In the embodiment shown in fig. 1 to 5, the predetermined number of heat exchange tubes 2 is the predetermined number of heat exchange tubes 2 from the left end of the header 1. The heat exchanger 100 may further include fins arranged alternately with the heat exchange tubes 2. The predetermined number is 10 or less, or the supply portion 32 includes tube segments within the header 1, the tube segments having a length in the axial direction of the header 1 within which the number of heat exchange tubes 2 is 10 or less. Further, the predetermined number may be selected on a case-by-case basis, and may be, for example, 3, 4, 5, 6, 7, 8, or more.
In some embodiments of the present invention, the insertion of the connecting pipe 3 the portion of the inner cavity of the collecting main 1 is located the ratio of the length of the collecting main 1 in the axial direction to the length of the collecting main 1 in the axial direction is less than 1/5. In the embodiment shown in the drawings, there is no partition plate in the header 1, so the length of the inner cavity of the header 1 in the axial direction of the header 1 is the length of the header 1 between two end covers, that is, the length of the entire inner cavity, and if there is a partition plate in the header 1, the length of the inner cavity of the header 1 in the axial direction of the header 1 is the length between the end cover 15 at the first end and the partition plate (provided with one partition plate), or the length between the end cover 15 at the first end and the partition plate (provided with a plurality of partition plates) of the end cover 15 closest to the first end.
In some embodiments of the present invention, the heat exchanger 100 is used as a condenser, and the connecting pipe 3 is an inlet pipe of the heat exchanger for inputting a heat exchange medium to the heat exchanger.
Referring to fig. 1 and 5, in some embodiments of the present invention, at least a portion of the supply portion 32 is inserted into the first end 11 of the header 1, and the end surface 33 of the supply portion 32, which is away from the end 30 of the connection portion 31, is located on a side of the first heat exchange tube 2 of the predetermined number of heat exchange tubes 2, which is away from the second end 12 of the header 1, in the axial direction of the header 1, or on a side of the first heat exchange tube 2 of the predetermined number of heat exchange tubes 2, which is toward the first end 11 of the header 1, in the axial direction of the header 1. For example, the header 1 further has an end cap 15 disposed at the first end 11 of the header 1, and the supply portion 32 of the connection pipe 3 is connected to the end cap 15 or inserted into the header 1 through an opening in the end cap 15. For example, the supply portion 32 is inserted into the first end 11 of the header 1 through an opening in the end cap 15 of the header 1. The first heat exchange tube 2 is the leftmost heat exchange tube 2 in the drawing.
Referring to fig. 2 to 5, in some embodiments of the present invention, the supply portion 32 is inserted into the first end portion 11 of the header 1, and the end surface 33 of the end portion 30 of the supply portion 32, which is away from the connection portion 31, is between the first heat exchange tube 2 of the predetermined number of heat exchange tubes 2 to the last heat exchange tube 2 of the predetermined number of heat exchange tubes 2 in the axial direction of the header 1. For example, the supply portion 32 of the connecting tube 3 comprises an opening 34 through the tube wall and/or an opening at the end of the supply portion 32 remote from the connection portion. The cross-section of the openings is parallel or inclined with respect to the axis of the header 1. The opening 34 may face in any direction in the radial direction of the connecting tube 3, and the opening 34 may have any suitable shape. According to some examples of the invention, the end 30 of the supply portion 32 of the connecting tube 3 remote from the connection portion 31 is closed, or the cross-sectional area of the end 30 of the supply portion 32 of the connecting tube 3 remote from the connection portion 31 is smaller than the cross-sectional area of the other portions of the supply portion 32 of the connecting tube 3. Whereby the heat exchange medium distributed to the predetermined number of heat exchange tubes 2 can be increased. The last heat exchange tube 2 is the rightmost one 2 shown in the drawing among the predetermined number of heat exchange tubes 2.
Referring to fig. 2, in some embodiments of the present invention, the axis of the supply portion 32 of the connecting pipe 3 is parallel to the axis of the header 1.
Referring to fig. 3 and 4, in some embodiments of the present invention, the end face 33 of the end 30 of the supply portion 32, which is remote from the connection portion 31, faces the end 20 of a predetermined number of heat exchange tubes 2 inserted into the header 1, and the end face 33 of said end 20 of the supply portion 32 is inclined with respect to the axis of the header 1. Alternatively, the end face 33 of the supply portion 32 remote from the end 30 of the connection portion 31 may not face the ends 20 of a predetermined number of heat exchange tubes 2 inserted into the header 1. For example, an end face 33 of the supply portion 32 remote from the end 30 of the connection portion 31 is inclined with respect to the axis of the supply portion 32.
Referring to fig. 1, 3 and 5, in some embodiments of the invention, the axis of the supply portion 32 of said connecting pipe 3 is inclined with respect to the axis of the header 1. For example, the axis of the supply portion 32 of the connecting pipe 3 is inclined with respect to the axis of the header 1 in the direction from the first end 11 to the second end 12 of the header 1 toward the ends 20 of a predetermined number of heat exchange tubes 2 inserted into the header 1.
Referring to fig. 4, in some embodiments of the present invention, the end 30 of the supply portion 32 of the connecting tube 3, which is distal from the connecting portion 31, is bent with respect to the other portions of the supply portion 32. For example, the end 30 of the supply portion 32 of the connection pipe 3, which is remote from the connection portion 31, is bent with respect to the other portion of the supply portion 32 toward the ends 20 of a predetermined number of heat exchange tubes 2 inserted into the header 1.
Referring to fig. 4, in some embodiments of the present invention, the heat exchanger 100 further includes a baffle 4 disposed in the header 1, the baffle 4 is disposed on a side of the end 30 of the supply portion 32 away from the connection portion 31, and the baffle 4 may be spaced apart from the end 30 of the supply portion 32, the baffle 4 allowing a portion of the heat exchange medium supplied from the connection pipe 3 to flow along the header 1 to a side of the baffle 4 away from the supply portion 32. Whereby the heat exchange medium distributed to the predetermined number of heat exchange tubes 2 can be increased.
Referring to fig. 5, in some embodiments of the present invention, the cross-sectional area of the supply portion 32 of the connecting pipe 3 gradually increases in a direction from the first end 11 to the second end 12 of the header 1. For example, the axis of the supply portion 32 of the connecting pipe 3 is inclined with respect to the axis of the header 1 in the direction from the first end 11 to the second end 12 of the header 1 toward the ends 20 of a predetermined number of heat exchange tubes 2 inserted into the header 1.
Adopt according to the utility model discloses a heat exchanger can improve heat exchanger's performance.
For example, when a heat exchanger such as a microchannel heat exchanger is used as an external unit of a heat pump unit, frost is formed on the surface (in this case, the heat exchanger is an evaporator) in winter, the frost is formed to a certain amount, the unit operates in a reverse direction to defrost, and the heat exchanger becomes a condenser. When defrosting is performed, a refrigerant with high temperature enters the upper header 1 from the connecting pipe 3, and then flows to the lower header along the heat exchange pipe 2 such as a flat pipe, and meanwhile, frost on the heat exchange pipe 2 is removed.
When the refrigerant enters the upper header 2 from the connecting pipe 3, a vortex low-pressure area is generated at the inlet of the header 2, which may cause a small refrigerant flow rate in the corresponding heat exchange tubes 2 (the heat exchange tubes at the extreme edge of the heat exchanger), and thus cause incomplete frost removal on the heat exchange tubes.
According to the utility model discloses an embodiment, when the heat exchanger was in the defrosting state (condenser this moment), the fluid flow direction of tip department export of change connecting pipe got rid of its vortex low-pressure area in the entrance of pressure manifold, improved the high temperature gaseous state refrigerant volume in the local heat exchange tube of entry, has accelerateed the defrosting.
While the above embodiments have been described, some of the features of the above embodiments may be combined to form new embodiments.
Claims (21)
1. A heat exchanger, characterized by comprising:
a header comprising opposing first and second ends and an inner cavity;
the heat exchange tubes are arranged along the axial direction of the collecting pipe, and the end parts of the heat exchange tubes are connected with the collecting pipe; and
a connection pipe including a connection portion and a supply portion connected to the connection portion and connected to the first end of the header, the supply portion being configured such that a flow direction of a heat exchange medium supplied to a predetermined number of heat exchange tubes through the inner cavity of the header is not parallel to an axis of the header, the predetermined number of heat exchange tubes being the predetermined number of heat exchange tubes counted from the first end of the header.
2. The heat exchanger of claim 1, wherein:
at least a portion of the supply portion is inserted into the first end portion of the header, and an end face of the end portion of the supply portion remote from the connection portion is on a side of a first one of the predetermined number of heat exchange tubes remote from the second end portion of the header in the axial direction of the header.
3. The heat exchanger of claim 1, wherein:
the supply portion is inserted into the first end portion of the header, and an end face of the end portion of the supply portion remote from the connection portion is between a first heat exchange tube of the predetermined number of heat exchange tubes to a last heat exchange tube of the predetermined number of heat exchange tubes in an axial direction of the header.
4. The heat exchanger of claim 3, wherein:
the supply portion of the connecting tube comprises an opening through the wall of the tube and/or an opening at the end of the supply portion remote from the connecting portion.
5. The heat exchanger of claim 4, wherein:
the cross section of the opening is parallel or inclined relative to the axis of the collecting main.
6. The heat exchanger according to any one of claims 1 to 3, wherein:
the axis of the supply part of the connecting pipe is parallel to the axis of the collecting main, or the axis of the supply part of the connecting pipe is inclined relative to the axis of the collecting main.
7. The heat exchanger of claim 4, wherein:
the end of the supply part of the connection pipe remote from the connection part is closed, or the cross-sectional area of the end of the supply part of the connection pipe remote from the connection part is smaller than the cross-sectional area of the other part of the supply part of the connection pipe.
8. The heat exchanger according to any one of claims 1 to 3, wherein:
the end face of said end of the supply portion is inclined with respect to the axis of the header.
9. The heat exchanger of claim 8, wherein:
the end face of the end of the supply portion remote from the connection portion faces the ends of a predetermined number of heat exchange tubes inserted into the header.
10. The heat exchanger according to any one of claims 1 to 3, wherein:
the axis of the supply portion of the connection pipe is inclined with respect to the axis of the header in a direction from the first end to the second end of the header toward the ends of a predetermined number of heat exchange tubes inserted into the header.
11. The heat exchanger according to any one of claims 1 to 3, wherein:
the end face of the end of the supply portion remote from the connection portion is inclined with respect to the axis of the supply portion.
12. The heat exchanger according to any one of claims 1 to 3, wherein:
an end of the supply portion of the connection pipe, which is remote from the connection portion, is bent with respect to the other portion of the supply portion.
13. The heat exchanger according to any one of claims 1 to 3, wherein:
an end of the supply portion of the connection pipe, which is remote from the connection portion, is bent with respect to the other portion of the supply portion toward ends of a predetermined number of heat exchange tubes inserted into the header.
14. The heat exchanger according to any one of claims 1 to 3, characterized by further comprising:
a baffle provided in the header, the baffle being provided at a side of the end of the supply part remote from the connection part, and the baffle allowing a part of the heat exchange medium supplied from the connection pipe to flow along the header to the side of the baffle remote from the supply part.
15. The heat exchanger according to any one of claims 1 to 3, wherein:
the cross-sectional area of the supply portion of the connection pipe gradually increases in a direction from the first end to the second end of the header.
16. The heat exchanger of claim 15, wherein:
the axis of the supply portion of the connection pipe is inclined with respect to the axis of the header in a direction from the first end to the second end of the header toward the ends of a predetermined number of heat exchange tubes inserted into the header.
17. The heat exchanger of claim 1, wherein:
and when the heat exchanger is used as a condenser, the connecting pipe is an inlet pipe of the heat exchanger and is used for inputting a heat exchange medium to the heat exchanger.
18. The heat exchanger of claim 1, wherein:
the predetermined number is less than or equal to 10, or the supply portion includes tube segments within the header, the tube segments having a length in the axial direction of the header within which the number of heat exchange tubes is less than or equal to 10.
19. The heat exchanger of claim 1, wherein:
the supply portion is configured such that a flow direction of the heat exchange medium supplied to the predetermined number of heat exchange tubes is at an angle of more than 30 degrees with respect to an axis of the header.
20. The heat exchanger of claim 1, wherein:
the header also has an end cap disposed at a first end of the header, and the supply portion of the connecting tube is connected to the end cap or inserted into the header through an opening in the end cap.
21. The heat exchanger of claim 1, wherein:
the ratio of the length of the part of the connecting pipe inserted into the inner cavity of the collecting pipe in the axial direction of the collecting pipe to the length of the inner cavity of the collecting pipe in the axial direction of the collecting pipe is less than 1/5.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021462968.3U CN212566983U (en) | 2020-07-22 | 2020-07-22 | Heat exchanger |
| PCT/CN2021/102076 WO2022017117A1 (en) | 2020-07-22 | 2021-06-24 | Heat exchanger |
| MX2023000676A MX2023000676A (en) | 2020-07-22 | 2021-06-24 | Heat exchanger. |
| US18/005,690 US20230280113A1 (en) | 2020-07-22 | 2021-06-24 | Heat exchanger |
| EP21845993.1A EP4187190A1 (en) | 2020-07-22 | 2021-06-24 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021462968.3U CN212566983U (en) | 2020-07-22 | 2020-07-22 | Heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212566983U true CN212566983U (en) | 2021-02-19 |
Family
ID=74630360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021462968.3U Expired - Fee Related CN212566983U (en) | 2020-07-22 | 2020-07-22 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212566983U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113970258A (en) * | 2020-07-22 | 2022-01-25 | 丹佛斯有限公司 | Heat exchanger |
| WO2022017117A1 (en) * | 2020-07-22 | 2022-01-27 | 丹佛斯有限公司 | Heat exchanger |
-
2020
- 2020-07-22 CN CN202021462968.3U patent/CN212566983U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113970258A (en) * | 2020-07-22 | 2022-01-25 | 丹佛斯有限公司 | Heat exchanger |
| WO2022017117A1 (en) * | 2020-07-22 | 2022-01-27 | 丹佛斯有限公司 | Heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210219 |