CN217541560U

CN217541560U - Heat exchanger

Info

Publication number: CN217541560U
Application number: CN202220769050.6U
Authority: CN
Inventors: 袁晶; 刘玉宝; 李艳星; 杨静
Original assignee: Danfoss AS
Current assignee: Danfoss AS
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-10-04
Anticipated expiration: 2032-04-02
Also published as: WO2023185343A1

Abstract

The utility model discloses a heat exchanger. The heat exchanger includes a first heat exchanger core including: a plurality of heat exchange tubes extending in a first direction; and a plurality of fins arranged alternately with the heat exchange tubes in the second direction, the fins comprising: a plurality of fin units arranged in a first direction, the fin units comprising: a fin unit main body; and fenestration pieces connected with the fin unit main body, at least some of the fenestration pieces having an angle of less than or equal to 45 degrees with respect to a plane defined by a first direction and a third direction, the third direction being perpendicular to the first direction and the second direction. According to the utility model discloses a heat exchanger has the drainage performance of reinforcing when using as the evaporimeter.

Description

Heat exchanger

Technical Field

The embodiment of the utility model relates to a heat exchanger.

Background

As shown in fig. 1 to 5, the conventional heat exchanger 100' includes: a collecting pipe 5; heat exchange tubes 10 such as flat tubes; two ends of the heat exchange tube 10 are connected with the collecting pipe 5 and are in fluid communication; and wavy fins 20 'alternately arranged with the heat exchange tubes 10, the fins having louvers 21'.

SUMMERY OF THE UTILITY MODEL

It is an object of embodiments of the present invention to provide a heat exchanger, for example, having enhanced drainage when used as an evaporator.

An embodiment of the utility model provides a heat exchanger, the heat exchanger includes first heat exchanger core, first heat exchanger core includes: a plurality of heat exchange tubes extending in a first direction; and a plurality of fins arranged alternately with the heat exchange tubes in the second direction, the fins including: a plurality of fin units arranged in a first direction, the fin units comprising: a fin unit main body; and fenestration pieces connected with the fin unit main body, wherein at least some fenestration pieces form an included angle of less than or equal to 45 degrees with a plane defined by the first direction and a third direction, and the third direction is perpendicular to the first direction and the second direction.

According to an embodiment of the present invention, the fin unit further includes a plurality of openings formed in the fin unit main body, the openings having opening edges, the louver protruding from the opening edges.

According to the utility model discloses an embodiment, the fin unit includes the many rows of window sheets, and each row of window sheet includes a plurality of window sheets that are parallel to each other who arranges along the second direction.

According to an embodiment of the present invention, each row of louvers is generally wavy in shape from one side to the other side in the second direction of the fin unit main body as viewed from the first direction.

According to an embodiment of the present invention, the louver has a parallelogram shape, the fin unit main body has a planar shape, the louver of the plurality of fin units of at least one fin has the same width, and the fin has a wavy shape when viewed from the third direction.

According to an embodiment of the present invention, the included angle between the length direction of at least some of the fenestration pieces and the plane defined by the first direction and the third direction is less than or equal to 45 degrees.

According to an embodiment of the present invention, the fin unit main body has a plurality of fin unit main body segments connected to each other in the third direction, and the fin unit main body has an undulating shape when viewed from one edge in the second direction of the fin unit main body to the direction of the other edge.

According to an embodiment of the present invention, the plurality of fin unit body segments of the fin unit body are inclined at an angle less than or equal to 45 degrees with respect to a plane defined by the second direction and the third direction.

According to the utility model discloses an embodiment, the window opening piece with the contained angle of fin unit main part is between 60 degrees to 90 degrees.

According to the utility model discloses an embodiment, the window opening piece with the contained angle of fin unit main part is between 85 degrees to 90 degrees.

According to an embodiment of the invention, the fin has a rectangular wave-like shape or a sine wave-like shape when viewed from the third direction.

According to an embodiment of the invention, the fenestration pieces of the at least one fin unit of the at least one fin protrude towards the same side in the first direction of the heat exchanger.

According to an embodiment of the present invention, the louver has a first edge connected to the fin unit main body, and a second edge opposite to the first edge, and for at least one fin, assuming that the plurality of fin units are arranged in order from one side to the other side in the first direction of the heat exchanger, at least one louver of at least one fin unit among the other fin units except the last fin unit protrudes toward the other side of the heat exchanger and the second edge of the at least one louver is adjacent to or in contact with the fin unit main body of the next fin unit.

According to the utility model discloses an embodiment, the second edge of at least one fenestration piece and the fin unit main part of next fin unit keep a distance apart, make can form the water bridge between the second edge of at least one fenestration piece and the fin unit main part of next fin unit.

According to the utility model discloses an embodiment, the fin unit main part of at least one fin unit of at least one fin is parallel to the second direction.

According to the utility model discloses an embodiment, the fin is first fin, and first heat exchanger core still includes: and the second fins are arranged on one side of the first fins in the third direction.

According to the utility model discloses an embodiment, the second fin includes: a plurality of fin units arranged in a first direction, the fin units comprising: a fin unit main body; and fenestration pieces connected to the fin unit body, at least some of the fenestration pieces being angled at greater than 45 degrees from a plane defined by the first direction and the third direction.

According to an embodiment of the present invention, the second fin has a wavy shape when viewed from the third direction.

According to the utility model discloses an embodiment, the heat exchanger still includes: a second heat exchanger core located on one side of the first heat exchanger core in the third direction.

According to the utility model discloses an embodiment, the second heat exchanger core includes: a plurality of heat exchange tubes extending in a first direction; and a plurality of fins arranged alternately with the heat exchange tubes in a second direction, the fins of the second heat exchanger core including: a plurality of fin units arranged in a first direction, the fin units comprising: a fin unit main body; and fenestration pieces connected to the fin unit body, at least some of the fenestration pieces being angled at greater than 45 degrees from a plane defined by the first direction and the third direction.

According to an embodiment of the invention, the fins of the second heat exchanger core have a corrugated shape when viewed from the third direction.

According to the utility model discloses a heat exchanger has the drainage performance of reinforcing when using as the evaporimeter.

Drawings

FIG. 1 is a schematic perspective view of a conventional heat exchanger;

FIG. 2 is a schematic perspective view of a portion of a conventional heat exchanger;

FIG. 3 is a schematic front view of a portion of the heat exchanger shown in FIG. 2;

FIG. 4 is a schematic side view of a portion of the heat exchanger shown in FIG. 2;

FIG. 5 is a schematic cross-sectional view of a portion of the heat exchanger taken along line AA in FIG. 3;

fig. 6 is a schematic perspective view of a heat exchanger according to an embodiment of the present invention;

FIG. 7 is a schematic perspective view of a portion of the heat exchanger shown in FIG. 6;

FIG. 8 is a schematic perspective view of a fin of a portion of the heat exchanger shown in FIG. 7;

FIG. 9 is a schematic front view of a portion of the heat exchanger shown in FIG. 7;

FIG. 10 is a schematic side view of a portion of the heat exchanger shown in FIG. 7;

FIG. 11 is a schematic cross-sectional view of a portion of the heat exchanger along line BB in FIG. 10;

fig. 12 is a schematic perspective view of a portion of a heat exchanger according to another embodiment of the present invention;

FIG. 13 is a schematic perspective view of a portion of the heat exchanger shown in FIG. 12 with the upper heat exchange tubes removed;

FIG. 14 is a schematic front view of a portion of the heat exchanger shown in FIG. 12;

FIG. 15 is a schematic side view of a portion of the heat exchanger shown in FIG. 12;

FIG. 16 is a schematic cross-sectional view of a portion of the heat exchanger taken along line CC in FIG. 15;

fig. 17 is a schematic perspective view of a portion of a heat exchanger according to yet another embodiment of the present invention;

FIG. 18 is a schematic perspective view of a portion of the heat exchanger shown in FIG. 17 with the upper heat exchange tubes removed;

FIG. 19 is a schematic front view of a portion of the heat exchanger shown in FIG. 17;

FIG. 20 is a schematic side view of a portion of the heat exchanger shown in FIG. 17;

FIG. 21 is a schematic cross-sectional view of a portion of the heat exchanger taken along line DD in FIG. 19;

fig. 22 is a schematic perspective view of a portion of a heat exchanger according to yet another embodiment of the present invention;

FIG. 23 is a schematic perspective view of a portion of the heat exchanger shown in FIG. 22 with the upper heat exchange tubes removed;

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

Referring to fig. 6 to 23, a heat exchanger 100 according to an embodiment of the present invention includes a first heat exchanger core 101. The first heat exchanger core 101 comprises: a plurality of heat exchange tubes 10 such as flat tubes extending in the first direction D1; and a plurality of fins 20 arranged alternately with the heat exchange tubes 10 in the second direction D2. The fin 20 includes a plurality of fin units 21 arranged in the first direction D1. The fin unit 21 includes: a fin unit main body 210; and louver pieces 211 connected to the fin unit main body 210, at least some of the louver pieces 211 having an angle of 45 degrees or less with respect to a plane defined by a first direction D1 and a third direction D3, the third direction D3 being perpendicular to the first direction D1 and the second direction D2. The first direction D1 and the second direction D2 may be perpendicular to each other. The heat exchange tube 10 may be a flat tube, and a plane defined by the first direction D1 and the third direction D3 may be parallel to a surface of the heat exchange tube 10 contacting the fin 20 in fig. 6. The third direction D3 may be a width direction of the heat exchange pipe 10. For example, the lengthwise direction of at least some of the fenestration sheets may be angled less than or equal to 45 degrees from a plane defined by the first direction and the third direction. In the embodiment shown in fig. 6, the heat exchanger 100 comprises only one heat exchanger core, and the heat exchanger 100 further comprises a header 5, and both ends of the heat exchange tube 10 are connected to and in fluid communication with the header 5.

Referring to fig. 6 to 23, according to an embodiment of the present invention, the fin unit main body 210 of the at least one fin unit 21 of the at least one fin 20 is parallel to the second direction D2. In the embodiment shown in the figures, all of the fin unit main bodies 210 are substantially parallel to the second direction D2. Obviously, the fin unit main body 210 of the at least one fin unit 21 of the at least one fin 20 may also be inclined with respect to the second direction D2.

Referring to fig. 6 to 23, according to an embodiment of the present invention, an angle between the louver 211 and the fin unit main body 210 is between 60 degrees and 90 degrees, for example, an angle between the louver 211 and the fin unit main body 210 may be between 85 degrees and 90 degrees, or the louver 211 is perpendicular to the fin unit main body 210. The fin 20 has a rectangular wave-like shape or a sine wave-like shape when viewed from the third direction D3. The fenestration pieces 211 of the plurality of fin units 21 of at least one fin 20 may have the same width. The fin unit 21 may be a plurality of individual fin units 21, and each fin unit 21 may be welded to the heat exchange tube through a connection portion connected to the fin unit 21. Further, the fin 20 may have a rectangular wave-like shape, i.e., the fin is integral, in which case connection portions (e.g., flat portions) connecting adjacent fin units 21 are welded to the heat exchange tube, and the flat fin units 21 are connected between the connection portions. If the fin 20 has a corrugated shape, such as a sine-wave-like shape, i.e., the fin is integral, in this case, the connection portions (e.g., curved surface-like portions) to which the adjacent fin units 21 are connected are welded to the heat exchange tube, and the flat fin units 21 are connected between the connection portions.

Referring to fig. 7, 8, 11-13, 16-18, according to an embodiment of the present invention, the fin unit 21 further includes a plurality of openings 212 formed in the fin unit body 210, the openings 212 having opening edges 215, the louver 211 protruding from the opening edges 215.

Referring to fig. 7, 8, 10, 12, 13, 15, 17, 18, 20, and 21, according to an embodiment of the present invention, the fin unit 21 includes a plurality of rows of louvers 211, and each row of louvers 211 includes a plurality of louvers 211 arranged in parallel to each other along the second direction D2. Adjacent two rows of louvers 211 of the plurality of rows of louvers 211 are spaced apart in the third direction.

Referring to fig. 12, 13, and 15, according to the embodiment of the present invention, each row of louvers 211 generally has a wave shape from one side to the other side of the fin unit body 210 in the second direction D2, when viewed from the first direction D1. Adjacent two rows of louvers 211 of the plurality of rows of louvers 211 are spaced apart in the third direction. The louver 211 may have a parallelogram shape. The fin unit body 210 may be substantially in one plane. According to an embodiment of the invention, the wind flows along an S-shaped path when flowing through the fins. Therefore, under the condition of not influencing the drainage performance, the disturbance to wind can be increased, the stroke of the wind is increased, and the heat exchange performance is enhanced.

Referring to fig. 6 to 16, according to an embodiment of the present invention, the fin unit main body 210 has a planar shape. That is, the fin unit main body 210 is substantially in one plane.

Referring to fig. 17, 18, 21, according to an embodiment of the present invention, the fin unit main body 210 has a plurality of fin unit main body segments 210S connected to each other in the third direction D3, and the fin unit main body 210 has a shape of an undulating broken line when viewed from one edge 2101 to the other edge 2102 in the second direction D2 of the fin unit main body 210. In the embodiment shown in the drawings, the fin unit main body 210 has a shape of an undulating broken line as viewed in the second direction D2. The plurality of fin unit body segments 210S of the fin unit body 210 may be inclined at an angle less than or equal to 45 degrees with respect to a plane defined by the second direction D2 and the third direction D3. According to an embodiment of the present invention, the fin unit main body 210 has a wave shape, and the wind flows along an S-shaped path when flowing through the fin. Therefore, under the condition of not influencing the drainage performance, the disturbance to wind can be increased, the stroke of the wind is increased, and the heat exchange performance is enhanced.

For example, the embodiment shown in fig. 12 to 16 and the embodiment shown in fig. 17 to 21 may be combined to form a new embodiment, in which case each row of louvers 211 has an overall wavy shape as viewed from the first direction D1 from one side to the other side in the second direction D2 of the fin unit main body 210, while the fin unit main body 210 has a plurality of fin unit main body segments 210S connected to each other in the third direction D3, and the fin unit main body 210 has a wavy shape as viewed from one edge 2101 to the other edge 2102 in the second direction D2 of the fin unit main body 210. According to the utility model discloses an embodiment carries out the vortex to wind in a plurality of wind-directions, has further strengthened heat transfer performance from this.

According to an embodiment of the present invention, the fenestration piece 211 of the at least one fin unit 21 of the at least one fin 20 protrudes towards the same side in the first direction D1 of the heat exchanger 100.

Referring to fig. 7, 8, 17, 18, and 21, the louver 211 may have a rectangular shape according to an embodiment of the present invention. The louver 211 may have any suitable shape such as a parallelogram shape.

Referring to fig. 9, 11, 14, 16, 19, 21, according to an embodiment of the present invention, the louver 211 has a first edge 2111 connected to the fin unit main body 210, and a second edge 2112 opposite to the first edge 2111, and for at least one fin 20, assuming that the plurality of fin units 21 are arranged in order from one side to the other side in the first direction D1 of the heat exchanger 100, at least one louver 211 of at least one fin unit 21 of the other fin units 21 except the last fin unit 21 protrudes toward the other side of the heat exchanger 100 and the second edge 2112 of the at least one louver 211 is adjacent to or in contact with the fin unit main body 210 of the next fin unit 21. In some examples of the invention, the second edge 2112 of the at least one louver 211 is spaced a distance from the fin unit body 210 of the next fin unit 21 such that a water bridge may be formed between the second edge 2112 of the at least one louver 211 and the fin unit body 210 of the next fin unit 21. Thus, when small water droplets are formed on the fin unit 21, the water droplets may flow to the fin unit main body 210 or the louver 211 of the lower fin unit 21 through the louver 211 of the upper fin unit 21, thereby achieving a water drainage function. In addition, the obstruction of water drops to wind and fin heat exchange is reduced, and the heat exchange performance is enhanced while the drainage function is strengthened.

In some embodiments of the present invention, the fin 20 has a rectangular wave shape when viewed from the third direction D3, so that the heights of the plurality of louver blades 211 protruding from the fin unit are the same, thereby facilitating formation of a plurality of drainage channels and facilitating processing.

Referring to fig. 22, 23, according to an embodiment of the present invention, the fin 20 is a first fin 20, and the first heat exchanger core 101 further includes: and a plurality of second fins 30 alternately arranged with the heat exchange tube 10 in the second direction D2, the first fins 20 and the second fins 30 being arranged side by side in the third direction D3, and the second fins 30 being located at one side of the first fins 20 in the third direction D3.

Referring to fig. 22 and 23, according to an embodiment of the present invention, the second fin 30 includes: a plurality of fin units 31 arranged in a first direction D1, the fin units 31 including: a fin unit main body 310; and the windowing sheets 311 are connected with the fin unit main body 310, and the included angle between at least some of the windowing sheets 311 and the plane defined by the first direction D1 and the third direction D3 is more than 45 degrees, so that the disturbance of the fins to wind is increased, and the heat exchange performance is improved. For example, the lengthwise direction of at least some of the fenestrations 311 is at an angle of greater than 45 degrees to the plane defined by the first direction D1 and the third direction D3. The second fin 30 may have a wave-like shape, for example, a sine-like wave-like shape, when viewed from the third direction D3. For example, the second fin 30 may be a conventional corrugated fin as mentioned in the background. Therefore, according to fig. 22, the heat exchanger 100 of the embodiment shown in fig. 23 enhances the heat exchange performance while enhancing the drainage function.

According to the embodiment of the present invention, the heat exchanger 100 further includes: a second heat exchanger core located on one side of the first heat exchanger core 101 in the third direction D3. According to the utility model discloses an embodiment, the second heat exchanger core includes: a plurality of heat exchange tubes extending in a first direction; and a plurality of fins arranged alternately with the heat exchange tubes in a second direction, the fins of the second heat exchanger core including: a plurality of fin units arranged in a first direction, the fin units comprising: a fin unit main body; and the windowing sheets are connected with the fin unit main body, and included angles between at least some windowing sheets and a plane defined by the first direction and the third direction are larger than 45 degrees, so that the disturbance of the fins to wind is increased, and the heat exchange performance is improved. For example, the lengthwise direction of at least some of the fenestration sheets is at an angle of greater than 45 degrees to the plane defined by the first direction and the third direction. According to an embodiment of the invention, the fins of the second heat exchanger core have a corrugated shape, e.g. a sine-like corrugated shape, when seen from the third direction D3. This embodiment may be formed by replacing the fin 20' of one of the two cores of the heat exchanger of fig. 1 mentioned in the background with a fin 20 according to an embodiment of the invention, such as the fin 20 of fig. 6. Therefore, the heat exchanger 100 according to the embodiment of the present invention enhances the heat exchange performance while enhancing the drainage function.

According to the utility model discloses a heat exchanger in practical application, the heat exchanger can be single heat exchanger, double heat exchanger or multirow heat exchanger to can be used as the evaporimeter. For a single row heat exchanger, the fins 20 may be used for some fins, and the fins 30 may be used for other fins (e.g., conventional corrugated fins as mentioned in the background section). For a dual-row heat exchanger or a multi-row heat exchanger, some rows of heat exchanger cores may employ fins 20, while other rows of heat exchanger cores may employ fins 30 (e.g., conventional corrugated fins as mentioned in the background).

According to the utility model discloses a heat exchanger is when using as the evaporimeter, to the single heat exchanger, and the fin of windward side can adopt fin 20, and the fin of leeward side can adopt fin 30 (for example, the traditional wave fin mentioned in the background art). For a dual or multi-row heat exchanger, the upwind side row or rows of the heat exchanger core may employ fins 20, while the leeward side row or rows of the heat exchanger core may employ fins 30 (e.g., conventional corrugated fins as mentioned in the background).

Through the arrangement mode, when air passes through the heat exchanger, the air firstly passes through the fins 20 beneficial to water drainage, reduces air humidity during heat exchange, and then exchanges heat again through the fins 30. Thereby achieving the maximization of heat exchange efficiency.

While the above embodiments have been described, some of the features of the above embodiments may be combined to form new embodiments. Furthermore, some of the above-described embodiments may also be combined to form new embodiments.

Claims

1. A heat exchanger, characterized by:

the heat exchanger includes a first heat exchanger core including:

a plurality of heat exchange tubes extending in a first direction; and

a plurality of fins arranged alternately with the heat exchange tubes in a second direction, the fins comprising:

a plurality of fin units arranged in a first direction, the fin units comprising:

a fin unit main body; and

and the windowing sheets are connected with the fin unit main body, at least some windowing sheets form an included angle with a plane defined by the first direction and a third direction which is less than or equal to 45 degrees, and the third direction is perpendicular to the first direction and the second direction.

2. The heat exchanger of claim 1, wherein:

the fin unit further includes a plurality of openings formed in the fin unit body, the openings having opening edges from which the louver pieces protrude.

3. The heat exchanger of claim 1, wherein:

the fin unit comprises a plurality of rows of louvers, and each row of louvers comprises a plurality of louvers arranged in parallel to each other in the second direction.

4. The heat exchanger of claim 3, wherein:

each row of louvers is generally wave-shaped from one side to the other side of the fin unit body in the second direction as viewed from the first direction.

5. The heat exchanger according to any one of claims 1 to 4, wherein:

the louver blades have a parallelogram shape, the fin unit main body has a planar shape, the louver blades of the plurality of fin units of at least one fin have the same width, and the fin has a wavy shape when viewed from the third direction.

6. The heat exchanger of claim 1, wherein:

at least some of the fenestration sheets have a length direction that is less than or equal to 45 degrees from a plane defined by the first direction and the third direction.

7. The heat exchanger according to any one of claims 1 to 4, wherein:

the fin unit body has a plurality of fin unit body segments connected to each other in a third direction, and the fin unit body has a wavy shape when viewed in a direction from one edge to the other edge of the fin unit body in a second direction.

8. The heat exchanger of claim 7, wherein:

the plurality of fin unit body segments of the fin unit body are inclined at an angle less than or equal to 45 degrees with respect to a plane defined by the second direction and the third direction.

9. The heat exchanger of claim 1, wherein:

the included angle between the window opening sheet and the fin unit main body is between 60 degrees and 90 degrees.

10. The heat exchanger of claim 9, wherein:

the included angle between the window opening sheet and the fin unit main body is between 85 degrees and 90 degrees.

11. The heat exchanger of claim 1, wherein:

the fin has a rectangular wave-like shape or a sine wave-like shape when viewed from the third direction.

12. The heat exchanger of claim 1, wherein:

the fenestration piece of at least one fin unit of the at least one fin projects toward the same side in the first direction of the heat exchanger.

13. The heat exchanger of claim 1, wherein:

the louver has a first edge connected to the fin unit body and a second edge opposite to the first edge, and

for at least one fin, assuming that the plurality of fin units are arranged in order from one side to the other side in the first direction of the heat exchanger, at least one louver of at least one of the fin units other than the last fin unit protrudes toward the other side of the heat exchanger and a second edge of the at least one louver is adjacent to or in contact with a fin unit body of the next fin unit.

14. The heat exchanger of claim 13, wherein:

the second edge of the at least one louver is spaced a distance from the fin unit body of the next fin unit such that a water bridge may be formed between the second edge of the at least one louver and the fin unit body of the next fin unit.

15. The heat exchanger of claim 1, wherein:

the fin unit body of at least one fin unit of the at least one fin is parallel to the second direction.

16. The heat exchanger of claim 1, wherein:

the fin is a first fin, and

the first heat exchanger core further comprises:

and the second fins are arranged on one side of the first fins in the third direction.

17. The heat exchanger of claim 16, wherein:

the second fin includes:

a fin unit body; and

and at least some of the fenestration sheets are angled more than 45 degrees from a plane defined by the first direction and the third direction.

18. The heat exchanger of claim 16 or 17, wherein:

the second fin has a wavy shape when viewed from the third direction.

19. The heat exchanger of claim 1, further comprising:

a second heat exchanger core located on one side of the first heat exchanger core in the third direction.

20. The heat exchanger of claim 19, wherein:

the second heat exchanger core includes:

a plurality of heat exchange tubes extending in a first direction; and

a plurality of fins arranged alternately with heat exchange tubes in a second direction, the fins of the second heat exchanger core comprising:

a fin unit main body; and

21. The heat exchanger of claim 20, wherein:

the fins of the second heat exchanger core have a corrugated shape when viewed from the third direction.