CN-224230802-U - Heat exchanger

Abstract

The utility model relates to a heat exchanger, which comprises heat exchange plates and a welding layer, wherein the heat exchange plates are arranged in a stacked mode, the heat exchange plates comprise a first plate and a second plate, the first plate comprises a first substrate, the second plate comprises a second substrate, the welding layer comprises a first welding part, the first welding part is respectively welded with the first substrate and the second substrate, a first plate channel is arranged between the first substrate and the second substrate, the heat exchanger is provided with a fluid pore canal and a distribution hole, the distribution hole is arranged on the radial outer side of the fluid pore canal and communicated with the first plate channel and the fluid pore canal, and the wall forming the distribution hole comprises a part of the first welding part and a part of the first substrate. When the wall forming the distribution hole includes a part of the first welded portion and a part of the first substrate, that is, the second substrate has the first welded portion at the position of the distribution hole, and the first substrate has no welded portion at the position of the distribution hole, so that the flow cross-sectional area of the distribution hole can be increased.

Inventors

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• Request for anonymity
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Assignees

• 绍兴三花汽车热管理科技有限公司

Dates

Publication Date

20260512

Application Date

20241231

Claims (11)

1. 1. The heat exchanger is characterized by comprising heat exchange plates and a welding layer (9) which are arranged in a stacked manner, wherein the heat exchange plates comprise a first plate (10) and a second plate (11); The first plate (10) comprises a first substrate (12), the second plate (11) comprises a second substrate (13), the welding layer (9) comprises a first welding part (14), the first welding part (14) is respectively welded with the first substrate (12) and the second substrate (13), and a first inter-plate channel (6) is arranged between the first substrate (12) and the second substrate (13); The heat exchanger (1) is provided with a fluid pore canal (5) and a distribution hole (15), the distribution hole (15) is positioned on the radial outer side of the fluid pore canal (5), and the distribution hole (15) is communicated with the first plate-to-plate channel (6) and the fluid pore canal (5); the wall forming the distribution hole (15) comprises a part of the first welded part (14) and a part of the first substrate (12), or the wall forming the distribution hole (15) comprises a part of the first welded part (14) and a part of the second substrate (13).
2. 2. The heat exchanger according to claim 1, wherein the first base plate (12) has at least two protrusions (16) protruding in a direction toward the second base plate (13), at least two of the protrusions (16) being located radially outside the fluid port holes (5), the first welding portions (14) welding the protrusions (16) and the second base plate (13), respectively, and the distribution holes (15) are provided between adjacent two of the protrusions (16).
3. 3. The heat exchanger according to claim 2, wherein the heat exchanger (1) further has a heat exchanging zone (17), wherein at least two of the bosses (16) comprise a first boss (18) and a second boss (19), wherein the first boss (18) and the second boss (19) each extend in the circumferential direction of the fluid duct (5), wherein the distribution hole (15) is provided between the first boss (18) and the second boss (19) in the circumferential direction of the fluid duct (5), and wherein the opening (36) of the distribution hole (15) is directed towards the heat exchanging zone (17).
4. 4. A heat exchanger according to claim 2 or 3, wherein the first base plate (12) further has a first base portion (20), the projection (16) projects with respect to the first base portion (20) in the direction of the second base plate (13), and the wall forming the distribution hole (15) comprises a part of the first welded portion (14) and a part of the first base portion (20).
5. 5. The heat exchanger according to claim 4, wherein the heat exchanger (1) further comprises at least one second inter-plate channel (7), which second inter-plate channel (7) is arranged at a distance from the first inter-plate channel (6) in the stacking direction of the heat exchanger plates; The welding layer (9) further comprises a second welding part (21), wherein the second welding part (21) is positioned in the second inter-plate channel (7), and the second welding part (21) is respectively welded with the first substrate (12) and the second substrate (13); Or the welding layer (9) further comprises a third welding part (22), wherein the third welding part (22) is positioned in the second inter-plate channel (7), and the third welding part (22) is respectively welded with the first substrate (12) and the second substrate (13); Or the welding layer (9) further comprises a second welding part (21) and a third welding part (22), wherein the second welding part (21) and the third welding part (22) are positioned in the second inter-plate channel (7), the second welding part (21) is welded with the second substrate (13), the third welding part (22) is welded with the first substrate (12), the second welding part (21) and the third welding part (22) are welded, and the wall forming the second inter-plate channel (7) comprises at least part of the second welding part (21) and at least part of the third welding part (22).
6. 6. The heat exchanger according to any one of claims 2 to 5, wherein the boss (16) has a top wall portion (23) and a side wall portion (24), the wall forming the distribution hole (15) includes at least a part of the side wall portion (24), a connection portion of the top wall portion (23) and the side wall portion (24) has a chamfer (25), a drainage groove (26) is provided between the chamfer (25) and the second substrate (13), and the drainage groove (26) communicates with the distribution hole (15).
7. 7. The heat exchanger is characterized by comprising heat exchange plates and a welding layer (9) which are arranged in a stacked manner, wherein the heat exchange plates comprise a first plate (10) and a second plate (11); The welding layer (9) comprises a first welding part (14), the first sheet (10) comprises a first base plate (12) and the first welding part (14), the first base plate (12) and the first welding part (14) are welded, the welding layer (9) further comprises a fourth welding part (29), the second sheet (11) comprises a second base plate (13) and a fourth welding part (29), the second base plate (13) and the fourth welding part (29) are welded, at least part of the first welding part (14) and at least part of the fourth welding part (29) are welded, and a first inter-plate channel (6) is arranged between the first base plate (12) and the second base plate (13); The heat exchanger (1) is provided with a fluid pore canal (5) and a distribution hole (15), the distribution hole (15) is positioned on the radial outer side of the fluid pore canal (5), and the distribution hole (15) is communicated with the first plate-to-plate channel (6) and the fluid pore canal (5); The wall forming the distribution hole (15) comprises a part of the first welding part (14) and a part of the fourth welding part (29), wherein the thickness of the first welding part (14) is D 1 , and the thicknesses of the fourth welding part (29) are D 2 ,D 1 and D 2 , and the relation of 0< D 1 ≤0.4D 2 or 0< D 2 ≤0.4D 1 is satisfied.
8. 8. The heat exchanger according to claim 7, wherein the first base plate (12) has at least two protrusions (16) protruding in the direction of the second base plate (13), at least two of the protrusions (16) being located radially outside the fluid duct (5), and wherein the distribution holes (15) are provided between adjacent two of the protrusions (16).
9. 9. The heat exchanger according to claim 8, wherein the heat exchanger (1) further has a heat exchanging zone (17), wherein at least two of the bosses (16) comprise a first boss (18) and a second boss (19), wherein the first boss (18) and the second boss (19) each extend in the circumferential direction of the fluid duct (5), wherein the distribution hole (15) is provided between the first boss (18) and the second boss (19) in the circumferential direction of the fluid duct (5), and wherein the opening (36) of the distribution hole (15) is directed towards the heat exchanging zone (17).
10. 10. The heat exchanger according to claim 8 or 9, wherein the heat exchanger (1) further comprises at least one second inter-plate channel (7), which second inter-plate channel (7) is arranged at a distance from the first inter-plate channel (6) in the stacking direction of the heat exchanger plates; The welding layer (9) further comprises a second welding part (21), wherein the second welding part (21) is positioned in the second inter-plate channel (7), and the second welding part (21) is respectively welded with the first substrate (12) and the second substrate (13); Or the welding layer (9) further comprises a third welding part (22), wherein the third welding part (22) is positioned in the second inter-plate channel (7), and the third welding part (22) is respectively welded with the first substrate (12) and the second substrate (13); Or the welding layer (9) further comprises a second welding part (21) and a third welding part (22), wherein the second welding part (21) and the third welding part (22) are positioned in the second inter-plate channel (7), the second welding part (21) is welded with the second substrate (13), the third welding part (22) is welded with the first substrate (12), the second welding part (21) and the third welding part (22) are welded, and the wall forming the second inter-plate channel (7) comprises at least part of the second welding part (21) and at least part of the third welding part (22).
11. 11. Heat exchanger according to claim 10, wherein the bulge (16) has a top wall portion (23) and a side wall portion (24), the wall forming the distribution hole (15) comprising at least part of the side wall portion (24), the junction of the top wall portion (23) and the side wall portion (24) having a chamfer (25), the chamfer (25) and the second base plate (13) having a drainage groove (26) therebetween, the drainage groove (26) being in communication with the distribution hole (15).

Description

Heat exchanger Technical Field The utility model relates to the technical field of heat management, in particular to a heat exchanger. Background When the plate heat exchanger is used as an evaporator, the state of the refrigerant at the inlet is in a gas-liquid two-phase state, and when the flow rate of the refrigerant is low, the phenomenon of gas-liquid phase separation is easy to occur, so that the refrigerant among heat exchange channels is unevenly distributed, and the heat exchange performance is seriously reduced. In order to solve the problems, the distribution holes are usually arranged at the inlet of the heat exchanger, so that the flow velocity of the refrigerant can be greatly improved, the gas-liquid mixing effect is improved, and the distribution of the refrigerant in the heat exchange channel is optimized. Disclosure of utility model In the related art, the distribution hole is formed by welding two adjacent plates, and the applicant finds that, during welding, the distribution hole is easily influenced by the flow of the solder due to the small size of the distribution hole, the solder is accumulated at the distribution hole, the welded hole diameter is obviously reduced, and the flow of the refrigerant in the heat exchange channel corresponding to the distribution hole is also obviously reduced. In view of the above, it is necessary to provide a heat exchanger in which the flow cross-sectional area of the distribution holes is increased. On one hand, the technical scheme adopted by the utility model is as follows: The heat exchanger comprises heat exchange plates and a welding layer which are arranged in a stacked manner, wherein each heat exchange plate comprises a first plate and a second plate; The welding layer comprises a first welding part, wherein the first welding part is respectively welded with the first substrate and the second substrate, and a first inter-plate channel is arranged between the first substrate and the second substrate; The heat exchanger is provided with a fluid pore canal and a distribution hole, the distribution hole is positioned at the radial outer side of the fluid pore canal, and the distribution hole is communicated with the first inter-plate channel and the fluid pore canal; The wall forming the dispensing hole includes a portion of the first weld and a portion of the first substrate, or the wall forming the dispensing hole includes a portion of the first weld and a portion of the second substrate. When the wall forming the distribution hole comprises a part of first welding parts and a part of first base plate, the first base plate and the second base plate are welded through the first welding parts, the wall forming the distribution hole comprises a part of first welding parts and a part of first base plate, namely, the part of the second base plate positioned in the distribution hole is provided with the first welding parts, and the part of the first base plate positioned in the distribution hole is not provided with the welding parts, so that the flow cross section area of the distribution hole can be increased. When the wall forming the distribution hole comprises a part of the first welding part and a part of the second substrate, the first substrate and the second substrate are welded through the first welding part, and the wall forming the distribution hole comprises a part of the first welding part and a part of the second substrate, namely, the part of the second substrate, which is positioned in the distribution hole, is free of the welding part, and the part of the first substrate, which is positioned in the distribution hole, is provided with the first welding part, so that the flow cross section area of the distribution hole can be increased. On the other hand, the utility model adopts the following technical scheme: The heat exchanger comprises heat exchange plates and a welding layer which are arranged in a stacked manner, wherein each heat exchange plate comprises a first plate and a second plate; The welding layer comprises a first welding part, the first plate comprises a first substrate and the first welding part, and the first substrate and the first welding part are welded; the welding layer further comprises a fourth welding part, the second plate comprises a second substrate and a fourth welding part, and the second substrate and the fourth welding part are welded; at least part of the first welding part is welded with at least part of the fourth welding part, and a first inter-plate channel is arranged between the first substrate and the second substrate; The heat exchanger is provided with a fluid pore canal and a distribution hole, the distribution hole is positioned at the radial outer side of the fluid pore canal, and the distribution hole is communicated with the first inter-plate channel and the fluid pore canal; The wall forming the dispensing orifice includes a portion of the first weld having a thickness D 1 and a portio