WO2024251293A1

WO2024251293A1 - Heat exchanger

Info

Publication number: WO2024251293A1
Application number: PCT/CN2024/098363
Authority: WO
Inventors: 李华; 焦举
Original assignee: Shaoxing Sanhua Automotive Thermal Management Technology Co Ltd
Current assignee: Shaoxing Sanhua Automotive Thermal Management Technology Co Ltd
Priority date: 2023-06-09
Filing date: 2024-06-11
Publication date: 2024-12-12
Anticipated expiration: 2025-12-09
Also published as: CN119103897A

Abstract

A heat exchanger provided in the embodiments of the present application comprises a flat pipe and a plurality of plate pieces, the plurality of plate pieces being stacked, and the flat pipe being arranged between at least one group of adjacent plate pieces; the flat pipe is provided with a plurality of through holes; a first inter-plate channel is provided between at least one other group of adjacent plate pieces; the heat exchanger comprises a first flow channel and a second flow channel, the first flow channel being not communicated with the second flow channel; a fluid in the first flow channel can exchange heat with a fluid in the second flow channel; combining the flat pipe with the plate pieces helps to simplify the structure of the heat exchanger.

Description

A heat exchanger

本申请要求于2023年06月09日提交中国专利局、申请号为202310684625.3、发明名称为“一种换热器”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent application filed with the China Patent Office on June 9, 2023, with application number 202310684625.3 and invention name “A Heat Exchanger”, all contents of which are incorporated by reference into this application.

Technical Field

本申请涉及热交换技术领域，具体涉及一种换热器。The present application relates to the field of heat exchange technology, and in particular to a heat exchanger.

Background Art

换热器包括壳体和芯体，芯体包括第一集流管、第二集流管、翅片板以及扁管，第一集流管、第二集流管之间均匀布置若干水平放置的扁管，相邻扁管之间插接有竖直方向阵列分布的翅片，扁管和集流管设有冷媒流道，翅片板具有冷却液流道，芯体放置在壳体的容纳腔中，实现冷媒和制冷剂间热能交换，芯体要装配在壳体的容纳腔，这样换热器的整体结构复杂。The heat exchanger includes a shell and a core. The core includes a first header, a second header, a fin plate and a flat tube. A number of horizontally placed flat tubes are evenly arranged between the first header and the second header. Fins distributed in a vertical array are inserted between adjacent flat tubes. The flat tubes and the header are provided with refrigerant flow channels. The fin plate has a coolant flow channel. The core is placed in the accommodating cavity of the shell to realize heat energy exchange between the refrigerant and the refrigerant. The core must be assembled in the accommodating cavity of the shell, so the overall structure of the heat exchanger is complicated.

发明内容Summary of the invention

本申请的目的在于提供一种结构简单的换热器。The purpose of the present application is to provide a heat exchanger with a simple structure.

为实现上述目的，本申请的一种实施方式采用如下技术方案：To achieve the above purpose, an implementation method of the present application adopts the following technical solution:

一种换热器，包括扁管和多个板片，多个所述板片堆叠设置，沿所述板片的堆叠方向，至少一组相邻的所述板片之间设置有所述扁管，所述扁管具有若干通孔，至少另一组相邻的所述的板片之间具有第一板间通道,所述换热器包括第一流道和第二流道，所述第一流道和所述第二流道不连通，所述第一流道内的流体能够与所述第二流道内的流体热交换，所述扁管的通孔是所述第一流道的一部分,所述第一板间通道是所述第二流道的一部分。A heat exchanger includes a flat tube and a plurality of plates, wherein the plurality of plates are stacked, and along the stacking direction of the plates, the flat tube is arranged between at least one group of adjacent plates, and the flat tube has a plurality of through holes, and a first inter-plate channel is provided between at least another group of adjacent plates. The heat exchanger includes a first flow channel and a second flow channel, wherein the first flow channel and the second flow channel are not connected, and the fluid in the first flow channel can exchange heat with the fluid in the second flow channel, and the through holes of the flat tube are part of the first flow channel, and the first inter-plate channel is part of the second flow channel.

本申请提供的一种实施方式中，换热器包括扁管和多个板片，多个板片堆叠设置，至少一组相邻的板片之间设置有扁管，扁管具有若干通孔，至少另一组相邻的板片之间具有第一板间通道,换热器包括第一流道和第二流道，第一流道和所述第二流道不连通，第一流道内的流体能够与第二流道内的流体热交换，将扁管与板片结合，这样设置有利于简化换热器的结构。In one embodiment provided by the present application, a heat exchanger includes a flat tube and a plurality of plates, the plurality of plates are stacked, a flat tube is arranged between at least one group of adjacent plates, the flat tube has a plurality of through holes, at least another group of adjacent plates has a first inter-plate channel, the heat exchanger includes a first flow channel and a second flow channel, the first flow channel and the second flow channel are not connected, and the fluid in the first flow channel can flow with the second The fluid in the flow channel exchanges heat, and the flat tubes are combined with the plates. This arrangement is conducive to simplifying the structure of the heat exchanger.

BRIEF DESCRIPTION OF THE DRAWINGS

图1是本申请提供的换热器的第一种实施例的换热单元A一个视角的立体结构示意图；FIG1 is a schematic diagram of a three-dimensional structure of a heat exchange unit A of a first embodiment of a heat exchanger provided by the present application from one viewing angle;

图2是本申请提供的换热器的第一种实施例的换热单元A的爆炸结构示意图；FIG2 is a schematic diagram of an exploded structure of a heat exchange unit A of a first embodiment of a heat exchanger provided by the present application;

图3是本申请提供的换热器的第一种实施例的换热单元A的一个视角的结构示意图；FIG3 is a structural schematic diagram of a heat exchange unit A of a first embodiment of a heat exchanger provided by the present application from one perspective;

图4是图3中换热单元A沿A-A的剖视结构示意图；FIG4 is a schematic cross-sectional view of the heat exchange unit A along line A-A in FIG3 ;

图5是图3中换热单元A沿B-B的剖视结构示意图；FIG5 is a schematic cross-sectional view of the heat exchange unit A along B-B in FIG3 ;

图6是图1中第三板片的一个视角的立体结构示意图；FIG6 is a schematic diagram of the three-dimensional structure of the third plate in FIG1 from one viewing angle;

图7是图1中第三板片的另一视角的立体结构示意图；FIG7 is a schematic diagram of the three-dimensional structure of the third plate in FIG1 from another perspective;

图8是图1中第二板片的一个视角的立体结构示意图；FIG8 is a schematic diagram of the three-dimensional structure of the second plate in FIG1 from one viewing angle;

图9是图1中第二板片的另一视角的立体结构示意图；FIG9 is a schematic diagram of the three-dimensional structure of the second plate in FIG1 from another perspective;

图10扁管和第三板片的组合结构的一个视角的立体结构示意图；FIG10 is a schematic three-dimensional structural diagram of a combined structure of a flat tube and a third plate from one viewing angle;

图11另一实施例中扁管和第三板片的组合结构的一个视角的立体结构示意图；FIG11 is a schematic three-dimensional structural diagram of a combined structure of a flat tube and a third plate in another embodiment from one viewing angle;

图12另一实施例中扁管和第三板片的组合结构的一个视角的立体结构示意图；FIG12 is a schematic three-dimensional structural diagram of a combined structure of a flat tube and a third plate in another embodiment from one viewing angle;

图13是本申请提供的换热器的第二种实施例的换热单元A的爆炸结构示意图；FIG13 is a schematic diagram of an exploded structure of a heat exchange unit A of a second embodiment of a heat exchanger provided by the present application;

图14是图13中第一板片的一个视角的立体结构示意图；FIG14 is a schematic diagram of the three-dimensional structure of the first plate in FIG13 from one viewing angle;

图15是图13中第一板片的另一视角的立体结构示意图；FIG15 is a schematic diagram of the three-dimensional structure of the first plate in FIG13 from another perspective;

图16是图13中第二板片的一个视角的立体结构示意图；FIG16 is a schematic diagram of the three-dimensional structure of the second plate in FIG13 from one viewing angle;

图17是图13中第二板片的另一视角的立体结构示意图。FIG. 17 is a schematic diagram of the three-dimensional structure of the second plate in FIG. 13 from another viewing angle.

DETAILED DESCRIPTION

下面结合附图和具体实施例对本申请作进一步说明： The present application is further described below with reference to the accompanying drawings and specific embodiments:

结合图1-图10，示意换热器的第一种实施例的局部结构，换热器包括多个板片101，多个板片101堆叠设置，相邻板片10之间具有供流体流通的空间。换热器包括扁管4，沿板片101的堆叠方向，至少一组相邻的板片101之间设置有扁管4，扁管4具有若干通孔41，至少另一组相邻的板片101之间具有第一板间通道S,换热器包括第一流道和第二流道，第一流道和第二流道不连通，第一流道内的流体能够与第二流道内的流体热交换，扁管4的通孔41是第一流道的一部分,第一板间通道S是第二流道的一部分。本实施例中，板片101与相邻的板片101之间具有扁管4，板片101与另一相邻的板片101之间具有第一板间通道S，第一板间通道S和扁管4交替设置，第一板间通道S供第一流体流通，通孔41供第二流体流通，通孔41和第一板间通道S不连通。将扁管4和板片101结合，有利于简化换热器的结构，扁管4的承压能力强，这样还有利于提高换热器的结构强度。In combination with FIG. 1 to FIG. 10 , the partial structure of the first embodiment of the heat exchanger is shown. The heat exchanger includes a plurality of plates 101, and the plurality of plates 101 are stacked. There is a space for fluid circulation between adjacent plates 10. The heat exchanger includes a flat tube 4. Along the stacking direction of the plates 101, a flat tube 4 is arranged between at least one group of adjacent plates 101. The flat tube 4 has a plurality of through holes 41. A first inter-plate channel S is provided between at least another group of adjacent plates 101. The heat exchanger includes a first flow channel and a second flow channel. The first flow channel and the second flow channel are not connected. The fluid in the first flow channel can exchange heat with the fluid in the second flow channel. The through holes 41 of the flat tube 4 are part of the first flow channel, and the first inter-plate channel S is part of the second flow channel. In this embodiment, a flat tube 4 is provided between a plate 101 and an adjacent plate 101, and a first inter-plate channel S is provided between a plate 101 and another adjacent plate 101. The first inter-plate channel S and the flat tube 4 are alternately arranged, the first inter-plate channel S is for the circulation of a first fluid, the through hole 41 is for the circulation of a second fluid, and the through hole 41 is not connected to the first inter-plate channel S. Combining the flat tube 4 and the plate 101 is conducive to simplifying the structure of the heat exchanger, and the flat tube 4 has a strong pressure bearing capacity, which is also conducive to improving the structural strength of the heat exchanger.

本实施例中，板片101包括本体1015和翻边1011，翻边1011沿本体1015的周向设置，翻边1011相对本体1015朝上凸起。多个板片101、扁管4与其他部件组装后形成芯体，芯体整体放进钎焊炉内进行钎焊，其他部件例如顶板、底板、安装板等，相邻板片101的翻边1011焊接连接并密封。本实施例中，扁管4的上、下两表面分别和相邻的板片101焊接连接，换热器通过焊接密封，这样结构的换热器换热效率高，且不需要设置额外的壳体用来容纳芯体，换热器的结构简单；另外，整体钎焊固定，换热器的成形工艺也简单。本申请中的第一流体指的是冷却液，冷却液主要为载冷剂，例如冷却水或冷却油，本申请中的第二流体指是冷媒，冷媒主要为制冷剂，例如氟烃制冷剂、二氧化碳。In this embodiment, the plate 101 includes a body 1015 and a flange 1011, the flange 1011 is arranged along the circumference of the body 1015, and the flange 1011 is upwardly protruding relative to the body 1015. A plurality of plates 101, a flat tube 4 and other components are assembled to form a core body, and the core body is put into a brazing furnace for brazing as a whole, and other components such as a top plate, a bottom plate, a mounting plate, etc., and the flanges 1011 of adjacent plates 101 are welded and sealed. In this embodiment, the upper and lower surfaces of the flat tube 4 are respectively welded to the adjacent plates 101, and the heat exchanger is sealed by welding. The heat exchanger of such a structure has high heat exchange efficiency, and does not need to set up an additional shell to accommodate the core body, and the structure of the heat exchanger is simple; in addition, the whole is brazed and fixed, and the forming process of the heat exchanger is also simple. The first fluid in this application refers to the coolant, which is mainly a coolant, such as cooling water or cooling oil. The second fluid in this application refers to the refrigerant, which is mainly a refrigerant, such as a fluorocarbon refrigerant and carbon dioxide.

在其他实施例中，还可以板片101和相邻的板片之间设置扁管4，板片101和另一相邻的板片101之间设置也是扁管4，下层板片101之间才设置第一板间通道S，扁管4的通孔41内流通冷媒，即连续设置两层冷媒板间通道，例如第一板片和第二板片之间设置扁管4，第二板片和第三板片之间也设置扁管4，第三板片和第四板片之间具有第一板间通道S，这样冷却液和冷媒之间的也可以进行热交换，但冷却液和冷媒之间的热交换效率较差，换热器的换热性能相对较差。这里第一板片、第二板片、第三板片、第四板片只表示四个临近的板片，不代表是换热器的板片顺序，在其他实施例中，也可以连续设置两层或更多层第一板间通道，然后才设置扁管4。在其他实施例中，还可以其中一组相邻的板片101之间设置扁管4，其他相邻板片101之间均设置第一板间通道S。为了方便描述，定义方向上、下为说明书附图中附图1的上、下方向，上、下仅表示相对位置；定义换热器的高度方向、长度方向、宽度方向为说明书附图中附图1的高度方向、长度方向、宽度方向，本申请中，换热器的高度方向与板片的堆叠方向一致；本申请中，扁管的长度方向与换热器的长度方向基本一致，基本一致包括一致和大致一致；本申请中，板片的长度方向与换热器的长度方向一致，板片的宽度方向与换热器的宽度方向一致；定义方向前、后为说明书附图中附图1的前、后方向，前、后仅表示相对位置。In other embodiments, a flat tube 4 may be provided between the plate 101 and an adjacent plate, a flat tube 4 may be provided between the plate 101 and another adjacent plate 101, and a first inter-plate channel S may be provided between the lower plates 101, and refrigerant may flow through the through holes 41 of the flat tube 4, that is, two layers of refrigerant inter-plate channels may be provided continuously, for example, a flat tube 4 may be provided between the first plate and the second plate, a flat tube 4 may be provided between the second plate and the third plate, and a first inter-plate channel S may be provided between the third plate and the fourth plate, so that heat exchange may be performed between the coolant and the refrigerant, but the heat exchange efficiency between the coolant and the refrigerant is poor, and the heat exchange performance of the heat exchanger is relatively poor. Here, the first plate, the second plate, and the third plate are provided as follows: The fourth plate only represents four adjacent plates, and does not represent the order of the plates of the heat exchanger. In other embodiments, two or more layers of the first inter-plate channels can be continuously set, and then the flat tubes 4 are set. In other embodiments, the flat tubes 4 can also be set between one group of adjacent plates 101, and the first inter-plate channels S can be set between other adjacent plates 101. For the convenience of description, the upper and lower directions are defined as the upper and lower directions of Figure 1 in the accompanying drawings of the specification, and the upper and lower directions only represent relative positions; the height direction, length direction, and width direction of the heat exchanger are defined as the height direction, length direction, and width direction of Figure 1 in the accompanying drawings of the specification. In this application, the height direction of the heat exchanger is consistent with the stacking direction of the plates; in this application, the length direction of the flat tube is basically consistent with the length direction of the heat exchanger, and basically consistent includes consistent and approximately consistent; in this application, the length direction of the plate is consistent with the length direction of the heat exchanger, and the width direction of the plate is consistent with the width direction of the heat exchanger; the front and rear directions are defined as the front and rear directions of Figure 1 in the accompanying drawings of the specification, and the front and rear only represent relative positions.

结合图6-图10，本实施例中，沿换热器的长度方向，板片101包括第一端1013和第二端1014，板片101的本体1015还包括第一角孔区6和第二角孔区7，第一角孔区6靠近第一端1013，第二角孔区7靠近第二端1014，换热区1012位于第一角孔区6和第二角孔区7之间。本实施例中，第一角孔区6位于换热区1012和靠近第一端1013的翻边1011之间，第二角孔区7位于换热区1012和靠近第二端1014的翻边1011之间。第一角孔区6包括第一角孔61和第二角孔62，第二角孔区7包括第三角孔71和第四角孔72。沿换热器的宽度方向，其中第一角孔61和第三角孔71位于板片101的同一侧，第二角孔62和第四角孔72位于板片101的另一侧，第一角孔61和第四角孔72成对角设置，第二角孔62和第三角孔71成对角设置。In conjunction with Fig. 6 to Fig. 10, in this embodiment, along the length direction of the heat exchanger, the plate 101 includes a first end 1013 and a second end 1014, and the body 1015 of the plate 101 also includes a first corner hole area 6 and a second corner hole area 7, the first corner hole area 6 is close to the first end 1013, the second corner hole area 7 is close to the second end 1014, and the heat exchange area 1012 is located between the first corner hole area 6 and the second corner hole area 7. In this embodiment, the first corner hole area 6 is located between the heat exchange area 1012 and the flange 1011 close to the first end 1013, and the second corner hole area 7 is located between the heat exchange area 1012 and the flange 1011 close to the second end 1014. The first corner hole area 6 includes a first corner hole 61 and a second corner hole 62, and the second corner hole area 7 includes a third corner hole 71 and a fourth corner hole 72. Along the width direction of the heat exchanger, the first corner hole 61 and the third corner hole 71 are located on the same side of the plate 101, the second corner hole 62 and the fourth corner hole 72 are located on the other side of the plate 101, the first corner hole 61 and the fourth corner hole 72 are diagonally arranged, and the second corner hole 62 and the third corner hole 71 are diagonally arranged.

结合图1-图2，换热器包括四个通道，换热器包括第一通道104、第二通道105、第三通道106以及第四通道107，多个板片101的第一角孔61沿板片101的堆叠方向至少部分对齐形成第一通道104，多个板片101的第二角孔62沿板片101的堆叠方向至少部分对齐形成第二通道105，多个板片101的第三角孔71沿板片101的堆叠方向至少部分对齐形成第三通道106，多个板片101的第四角孔72沿板片101的堆叠方向至少部分对齐形成第四通道107。沿换热器的宽度方向，第一通道104和第三通道106位于换热器的同一侧，第二通道105和第四通道107位于换热器的另一侧，第一通道104和第四通道107成对角设置，第二通道105和第三通道106成对角设置。In conjunction with FIG. 1-FIG. 2, the heat exchanger includes four channels, namely, a first channel 104, a second channel 105, a third channel 106 and a fourth channel 107. The first corner holes 61 of the plurality of plates 101 are at least partially aligned along the stacking direction of the plates 101 to form the first channel 104, the second corner holes 62 of the plurality of plates 101 are at least partially aligned along the stacking direction of the plates 101 to form the second channel 105, the third corner holes 71 of the plurality of plates 101 are at least partially aligned along the stacking direction of the plates 101 to form the third channel 106, and the fourth corner holes 72 of the plurality of plates 101 are at least partially aligned along the stacking direction of the plates 101 to form the fourth channel 107. Along the width direction of the heat exchanger, the first channel 104 and the third channel 106 are located on the same side of the heat exchanger, and the second channel 105 and the fourth channel 107 are located on the other side of the heat exchanger. The first channel 104 and the fourth channel 107 are arranged diagonally, and the second channel 105 and the third channel 106 are arranged diagonally.

本实施例中，第一通道104和第四通道107分别供冷媒流入和流出换热器，第二通道105和第三通道106分别供冷却液流入和流出换热器。板片101与扁管4等组装后，整体钎焊，相邻板片101的角孔区焊接连接，本实施例中，板片101和相邻的板片101在它们第一角孔61的外周采用点焊，沿与板片101堆叠方向垂直的方向，靠近第一角孔61的外周，板片101和这一相邻的板片101之间具有第一孔道63；板片101和另一相邻的板片101在它们第一角孔61的外周整圈焊接，沿与板片101堆叠方向垂直的方向，靠近第一角孔61的外周，板片101和另一相邻的板片101之间没有与第一板间通道S连通的第一孔道63。这样第一通道104可以通过第一孔道63和通孔41连通，第一通道104和第一板间通道S不连通。同理，通过这种焊接方案，靠近第四角孔72的外周，可以使板片101和其中一个相邻的板片101之间具有第四孔道74，第四通道107通过第四孔道74和通孔41连通；靠近第四角孔72的外周，板片101和另一相邻的板片101之间整圈焊接，第四通道107和第一板间通道S不连通；靠近第二角孔62的外周，板片101和其中一个相邻的板片101之间具有第二孔道64，板片101和另一相邻的板片101之间整圈焊接，第二通道105通过第二孔道64和第一板间通道S连通，第二通道105和通孔41不连通；靠近第三角孔71的外周，板片101和其中一个相邻的板片101之间具有第三孔道73，板片101和另一相邻的板片101之间整圈焊接，第三通道106通过第三孔道73和第一板间通道S连通，第三通道106和通孔41不连通。In this embodiment, the first channel 104 and the fourth channel 107 are respectively used for the refrigerant to flow into and out of the heat exchanger, and the second channel 105 and the third channel 106 are respectively used for the coolant to flow into and out of the heat exchanger. After the plate 101 is assembled with the flat tube 4, etc., it is brazed as a whole, and the corner hole areas of adjacent plates 101 are welded and connected. In this embodiment, the plate 101 and the adjacent plate 101 are spot welded at the periphery of their first corner holes 61, and along the direction perpendicular to the stacking direction of the plate 101, near the periphery of the first corner hole 61, there is a first channel 63 between the plate 101 and the adjacent plate 101; the plate 101 and another adjacent plate 101 are welded at the periphery of their first corner holes 61 in a full circle, and along the direction perpendicular to the stacking direction of the plate 101, near the periphery of the first corner hole 61, there is no first channel 63 connected to the first inter-plate channel S between the plate 101 and another adjacent plate 101. In this way, the first channel 104 can be connected to the through hole 41 through the first hole 63, and the first channel 104 is not connected to the first inter-plate channel S. Similarly, through this welding scheme, near the outer periphery of the fourth corner hole 72, the fourth channel 74 can be provided between the plate 101 and one of the adjacent plates 101, and the fourth channel 107 is connected to the through hole 41 through the fourth hole 74; near the outer periphery of the fourth corner hole 72, the plate 101 and another adjacent plate 101 are welded in a full circle, and the fourth channel 107 is not connected to the first inter-plate channel S; near the outer periphery of the second corner hole 62, the plate 101 and one of the adjacent plates 101 have the second hole 64 between them. 4. The plate 101 and another adjacent plate 101 are welded in a full circle, the second channel 105 is connected to the first inter-plate channel S through the second hole 64, and the second channel 105 is not connected to the through hole 41; near the outer periphery of the third corner hole 71, there is a third hole 73 between the plate 101 and one of the adjacent plates 101, the plate 101 and another adjacent plate 101 are welded in a full circle, the third channel 106 is connected to the first inter-plate channel S through the third hole 73, and the third channel 106 is not connected to the through hole 41.

本实施例中，第一通道104为冷媒的入口通道，第四通道107为冷媒的出口通道，第二通道105为冷却液的入口通道，第三通道106为冷却液的出口通道，第一通道104和第四通道107成对角设置，第二通道105和第三通道106成对角设置，这样能够增长冷媒和冷却液的流动路径，提高换热器的换热效率。冷媒自第一通道104的入口流入第一通道104，然后通过第一孔道63流入扁管4的通孔41，然后通过第四孔道74流入第四通道107，自第四通道107流出换热器。第一通道104、第四通道107、第一孔道63、扁管4的通孔41以及第四孔道74均是第一流道的一部分。冷却液自第二通道105的入口流入第二通道105，然后通过第二孔道64流入第一板间通道S，然后通过第三孔道73流入第三通道106，自第三通道106流出换热器。第二通道105、第三通道106、第三孔道73、第一板间通道S以及第二孔道64是第二流道的一部分。第一通道104、第二通道105、第三通道106、第四通道107的进、出口位于换热器的上方或者下方可以根据需要灵活选择。在其他实施例中，也可以第一通道104为冷媒的入口通道，第三通道106为冷媒的出口通道，第二通道105为冷却液的入口通道，第四通道107为冷却液的出口通道，还可以是第三通道106为冷却液的入口通道，第四通道107为冷却液的出口通道，第一通道101、第二通道102分别作出冷媒的入口通道、出口通道，冷媒或者冷却液的流入或者流出通道可以根据需要选择，只要换热器的四个通道中的其中两个供第一流体流通，四个通道中的另两个供第二流体流通即可。In this embodiment, the first channel 104 is the inlet channel of the refrigerant, the fourth channel 107 is the outlet channel of the refrigerant, the second channel 105 is the inlet channel of the coolant, and the third channel 106 is the outlet channel of the coolant. The first channel 104 and the fourth channel 107 are arranged diagonally, and the second channel 105 and the third channel 106 are arranged diagonally. This can increase the flow path of the refrigerant and the coolant and improve the heat exchange efficiency of the heat exchanger. The refrigerant flows into the first channel 104 from the inlet of the first channel 104, then flows into the through hole 41 of the flat tube 4 through the first hole 63, and then flows into the fourth channel 107 through the fourth hole 74, and flows out of the heat exchanger from the fourth channel 107. The first channel 104, the fourth channel 107, the first The hole 63, the through hole 41 of the flat tube 4 and the fourth hole 74 are all part of the first flow channel. The coolant flows into the second channel 105 from the inlet of the second channel 105, then flows into the first inter-plate channel S through the second hole 64, then flows into the third channel 106 through the third hole 73, and flows out of the heat exchanger from the third channel 106. The second channel 105, the third channel 106, the third hole 73, the first inter-plate channel S and the second hole 64 are part of the second flow channel. The inlet and outlet of the first channel 104, the second channel 105, the third channel 106 and the fourth channel 107 can be flexibly selected as needed, above or below the heat exchanger. In other embodiments, the first channel 104 can be the inlet channel of the refrigerant, the third channel 106 can be the outlet channel of the refrigerant, the second channel 105 can be the inlet channel of the coolant, and the fourth channel 107 can be the outlet channel of the coolant. Alternatively, the third channel 106 can be the inlet channel of the coolant, and the fourth channel 107 can be the outlet channel of the coolant. The first channel 101 and the second channel 102 can be respectively configured as the inlet channel and the outlet channel of the refrigerant. The inlet or outflow channel of the refrigerant or the coolant can be selected as needed, as long as two of the four channels of the heat exchanger are used for the circulation of the first fluid and the other two of the four channels are used for the circulation of the second fluid.

结合图1和图2，本实施例中，多个板片101包括第一板片1、第二板片2、第三板片3，第一板片1、第二板片2和第三板片3沿板片101的堆叠方向依次堆叠，即第一板片1、第二板片2、第三板片3自上而下堆叠，第二板片2位于第一板片1和第三板片3之间。本实施例中，换热器包括换热单元A，换热单元A包括第一板片1、第二板片2和第三板片3，换热单元A为换热器的局部结构。本实施例中，第一板片1和第三板片3的结构相同，这样只需要制造两种结构的板片101，便于板片101的成型，板片101的类型相对少，还便于换热器的组装。第一板片1和第二板片2之间具有第一板间通道S，能够供冷却液流通。扁管4位于第二板片2和第三板片3之间，扁管4包括若干通孔41，通孔41供冷媒流通，通孔41和第一板间通道S不连通。In conjunction with FIG. 1 and FIG. 2 , in this embodiment, a plurality of plates 101 include a first plate 1, a second plate 2, and a third plate 3, and the first plate 1, the second plate 2, and the third plate 3 are stacked in sequence along the stacking direction of the plates 101, that is, the first plate 1, the second plate 2, and the third plate 3 are stacked from top to bottom, and the second plate 2 is located between the first plate 1 and the third plate 3. In this embodiment, the heat exchanger includes a heat exchange unit A, and the heat exchange unit A includes a first plate 1, a second plate 2, and a third plate 3, and the heat exchange unit A is a local structure of the heat exchanger. In this embodiment, the first plate 1 and the third plate 3 have the same structure, so that only two structures of plates 101 need to be manufactured, which is convenient for the molding of the plates 101, and the types of the plates 101 are relatively few, which is also convenient for the assembly of the heat exchanger. There is a first inter-plate channel S between the first plate 1 and the second plate 2, which can be used for the circulation of the coolant. The flat tube 4 is located between the second plate 2 and the third plate 3 . The flat tube 4 includes a plurality of through holes 41 . The through holes 41 are for the circulation of the refrigerant. The through holes 41 are not connected to the first inter-plate channel S.

结合图1-图5，本实施例中，翻边1011和本体1015围成容纳腔。本申请中，第一板片1具有第一容纳腔13，第二板片2具有第二容纳腔25，第三板片3具有第三容纳腔36。本实施例中，扁管4包括一个扁管4，扁管4位于第三容纳腔36，本实施例中，扁管4位于换热区1012，这样设置方便扁管4的组装，还便于后续将冷媒引入到或者引出扁管4的通孔41。扁管4包括若干通孔41，通孔41沿着扁管4的长度方向贯穿扁管4，通孔41形成冷媒通道，扁管4的结构强度高，承压性强，采用扁管4结构能够提高换热器的结构强度，特别是当冷媒为二氧化碳制冷剂时，二氧化碳工作压力较大，扁管4结构可以承受二氧化碳的工作压强。在其他实施例中，还可以部分扁管4位于换热区1012，部分扁管4位于角孔区。In conjunction with Figures 1 to 5, in this embodiment, the flange 1011 and the body 1015 enclose a receiving cavity. In the present application, the first plate 1 has a first receiving cavity 13, the second plate 2 has a second receiving cavity 25, and the third plate 3 has a third receiving cavity 36. In this embodiment, the flat tube 4 includes a flat tube 4, and the flat tube 4 is located in the third receiving cavity 36. In this embodiment, the flat tube 4 is located in the heat exchange area 1012. This arrangement facilitates the assembly of the flat tube 4 and also facilitates the subsequent introduction of the refrigerant into or out of the through hole 41 of the flat tube 4. The flat tube 4 includes a plurality of through holes 41, which penetrate the flat tube 4 along the length direction of the flat tube 4, and the through holes 41 form a refrigerant channel. The flat tube 4 has high structural strength and strong pressure bearing capacity. The flat tube 4 structure can improve the structural strength of the heat exchanger, especially when the refrigerant is carbon dioxide refrigerant, the working pressure of carbon dioxide is relatively large, and the flat tube 4 structure can withstand the working pressure of carbon dioxide. In other embodiments, part of the flat tube 4 can be located in the heat exchange area 1012, and part of the flat tube 4 can be located in the corner hole area.

本实施例中，若干通孔41沿着换热器的宽度方向成一排布置，即若干通孔41沿着换热器的宽度方大致在同一直线，这样设置有利于控制冷媒的流动路径，提高换热性能。在其他实施例中，若干通孔41也可以沿着换热器的宽度方向呈波浪形排布，或者随机排布，这样也可以实现冷媒的流通，实现换热。本实施例中，扁管4的上板面和第二板片2接触设置并焊接，扁管4的下板面和第三板片3接触并焊接，这样可以防止冷媒流入扁管4的板面和板片101之间的间隙，影响冷媒分配，影响换热效率；另外，冷媒在扁管4的通孔41中流通，冷媒的工作压力主要作用于扁管4，这样还可以提高换热器的结构强度。In this embodiment, a plurality of through holes 41 are arranged in a row along the width direction of the heat exchanger, that is, a plurality of through holes 41 are roughly in the same straight line along the width direction of the heat exchanger, and such arrangement is conducive to controlling the flow path of the refrigerant and improving the heat exchange performance. In other embodiments, a plurality of through holes 41 may also be arranged in a wave shape or randomly along the width direction of the heat exchanger, which may also realize the circulation of the refrigerant and achieve heat exchange. In this embodiment, the upper plate surface of the flat tube 4 and the second plate 2 are contacted and welded, and the lower plate surface of the flat tube 4 and the third plate 3 are contacted and welded, which can prevent the refrigerant from flowing into the gap between the plate surface of the flat tube 4 and the plate 101, affecting the refrigerant distribution and the heat exchange efficiency; in addition, the refrigerant circulates in the through holes 41 of the flat tube 4, and the working pressure of the refrigerant mainly acts on the flat tube 4, which may also improve the structural strength of the heat exchanger.

参照图10，扁管4包括第一侧壁43和第二侧壁44，第一侧壁43和第二侧壁44沿扁管4的宽度方向的分别在扁管4两侧，第一侧壁43和第二侧壁44沿扁管4的长度方向延伸。本实施例中，第一侧壁43和翻边1011接触设置，第二侧壁44和翻边1011接触设置，这样设置冷媒在扁管4的通孔41内流动，冷媒的工作压力主要作用于扁管4，扁管4的承压能力强，有利于提高换热器的结构强度；另外，冷媒的工作压力较少作用于板片101，有利避免冷媒的工作压力过大时导致板片101变形，或者使得相邻板片101间焊缝开裂。在其他实施例中，第一侧壁43和翻边1011还可以间隙配合，第二侧壁44和翻边1011也可以间隙配合，第一侧壁43和翻边1011之间的间隙可以为冷媒提供流道，第二侧壁44和翻边1011之间的间隙也可以为冷媒提供流道，这样可以分配冷媒，为冷媒提供流动路径。10 , the flat tube 4 includes a first side wall 43 and a second side wall 44, which are respectively on both sides of the flat tube 4 along the width direction of the flat tube 4, and extend along the length direction of the flat tube 4. In this embodiment, the first side wall 43 is arranged in contact with the flange 1011, and the second side wall 44 is arranged in contact with the flange 1011, so that the refrigerant flows in the through hole 41 of the flat tube 4, and the working pressure of the refrigerant mainly acts on the flat tube 4, and the flat tube 4 has a strong pressure bearing capacity, which is conducive to improving the structural strength of the heat exchanger; in addition, the working pressure of the refrigerant acts less on the plate 101, which is conducive to avoiding deformation of the plate 101 or cracking of the weld between adjacent plates 101 when the working pressure of the refrigerant is too high. In other embodiments, the first side wall 43 and the flange 1011 may also be gap-fitted, and the second side wall 44 and the flange 1011 may also be gap-fitted. The gap between the first side wall 43 and the flange 1011 may provide a flow channel for the refrigerant, and the gap between the second side wall 44 and the flange 1011 may also provide a flow channel for the refrigerant. In this way, the refrigerant can be distributed and a flow path can be provided for the refrigerant.

在其他实施例中，扁管4也可以设置多排通孔41，通孔41沿着换热器的宽度方向成行排布，通孔41沿着换热器的高度方向成列排布，多排通孔41的设置可以增加冷媒的流动路径，提高换热效率。在其他实施例中，通孔41也可以沿着换热器的高度方向和宽度方向随机排布。本实施例中，通孔41为规则的圆形通孔，这样便于通孔41的成型。在其他实施例中，通孔41也可以为波浪型或其他形状的通孔41，即形成通孔41的内周壁成波浪形或其他形状。In other embodiments, the flat tube 4 may also be provided with multiple rows of through holes 41, the through holes 41 are arranged in rows along the width direction of the heat exchanger, and the through holes 41 are arranged in columns along the height direction of the heat exchanger. The arrangement of multiple rows of through holes 41 can increase the flow path of the refrigerant and improve the heat exchange efficiency. In other embodiments, the through holes 41 may also be randomly arranged along the height direction and the width direction of the heat exchanger. In this embodiment, The through hole 41 is a regular circular through hole, which facilitates the forming of the through hole 41. In other embodiments, the through hole 41 may also be a wavy or other shaped through hole 41, that is, the inner peripheral wall of the through hole 41 is wavy or other shaped.

在另一实施例中，换热器包括多个扁管4，多个扁管4沿板片101的堆叠方向层叠在一起，相邻扁管4之间焊接固定，每一扁管4都包括若干通孔41，这样设置也可以为冷媒提供更多流动路径，增强换热器的换热性能。In another embodiment, the heat exchanger includes a plurality of flat tubes 4, which are stacked together along the stacking direction of the plates 101, and adjacent flat tubes 4 are welded and fixed. Each flat tube 4 includes a plurality of through holes 41. Such a configuration can also provide more flow paths for the refrigerant, thereby enhancing the heat exchange performance of the heat exchanger.

参照图11，在另一实施例中，多个扁管4沿板片101的长度方向间隔排布，扁管4的通孔41沿板片101的长度方向设置，相邻扁管4之间具有供冷媒流动的间隙，这样设置冷媒可以从一个扁管4的通孔41通过间隙流到下一个扁管4的通孔41，这样有利于增加冷媒的流道路径，提高换热面积，提高换热器的换热效率。在其他实施例中，沿板片101的长度方向设置，还可以在相邻扁管4之间的间隙设置引流结构，例如凸起，将一个扁管4的通孔41内的冷媒引流到另一个扁管4的通孔41内，便于冷媒的分配。Referring to FIG. 11 , in another embodiment, a plurality of flat tubes 4 are arranged at intervals along the length direction of the plate 101 , and the through holes 41 of the flat tubes 4 are arranged along the length direction of the plate 101 , and there is a gap between adjacent flat tubes 4 for the flow of refrigerant, so that the refrigerant can flow from the through hole 41 of one flat tube 4 through the gap to the through hole 41 of the next flat tube 4 , which is conducive to increasing the flow path of the refrigerant, increasing the heat exchange area, and improving the heat exchange efficiency of the heat exchanger. In other embodiments, the plate 101 is arranged along the length direction, and a drainage structure, such as a protrusion, can also be arranged in the gap between adjacent flat tubes 4 to drain the refrigerant in the through hole 41 of one flat tube 4 to the through hole 41 of another flat tube 4 , so as to facilitate the distribution of the refrigerant.

参照图12，在另一实施例中，换热器包括多个扁管4，多个扁管4沿板片101的宽度方向间隔排布，相邻扁管4之间的间隙可以供冷媒流动，这样也可以实现冷媒和冷却液之间进行热交换。12 , in another embodiment, the heat exchanger includes a plurality of flat tubes 4 , which are arranged at intervals along the width direction of the plate 101 , and the gaps between adjacent flat tubes 4 can allow the refrigerant to flow, so that heat exchange between the refrigerant and the coolant can be achieved.

在其他实施例中，多个扁管4沿板片101的长度方向间隔排布，沿板片101的长度方向排布的扁管4之间具有间隙，同时其他多个扁管4沿板片101的宽度方向间隔排布，沿板片101的宽度方向排布的扁管之间具有间隙，这样能够进一步增长冷媒的流动路径，提高换热器的换热效率。In other embodiments, a plurality of flat tubes 4 are arranged at intervals along the length direction of the plate 101, and there are gaps between the flat tubes 4 arranged along the length direction of the plate 101. At the same time, another plurality of flat tubes 4 are arranged at intervals along the width direction of the plate 101, and there are gaps between the flat tubes arranged along the width direction of the plate 101. This can further increase the flow path of the refrigerant and improve the heat exchange efficiency of the heat exchanger.

结合图6-图9，本实施例中，第三板片3包括若干引流部31，引流部31位于第一角孔区6，引流部31位于第一角孔61的外周。本实施例中，引流部31靠近换热区1012设置，若干引流部31沿第一角孔61的外周间隔设置。本实施例中，引流部31具有凹槽，引流部31具有朝上开口，引流部31包括引流槽311，第一通道104通过引流槽311和扁管4上的通孔41连通，引流部31的设置可以将冷媒多路线分配到扁管4的通孔41，满足第一角孔区6对冷媒的分配，提高换热效果。本实施例中，引流部31 设置多个，这样有利于提高冷媒的分配。In conjunction with Figures 6 to 9, in this embodiment, the third plate 3 includes a plurality of drainage portions 31, and the drainage portions 31 are located in the first corner hole area 6, and the drainage portions 31 are located at the periphery of the first corner hole 61. In this embodiment, the drainage portions 31 are arranged close to the heat exchange area 1012, and a plurality of drainage portions 31 are arranged at intervals along the periphery of the first corner hole 61. In this embodiment, the drainage portion 31 has a groove, and the drainage portion 31 has an upward opening. The drainage portion 31 includes a drainage groove 311, and the first channel 104 is connected to the through hole 41 on the flat tube 4 through the drainage groove 311. The setting of the drainage portion 31 can distribute the refrigerant to the through hole 41 of the flat tube 4 in multiple routes, so as to meet the distribution of the refrigerant in the first corner hole area 6 and improve the heat exchange effect. In this embodiment, the drainage portion 31 Setting multiple ones is helpful to improve the distribution of refrigerant.

本实施例中，第三板片3还包括若干第一凸台部33，第一凸台部33位于第一角孔区6，第一凸台部33位于第一角孔61的外周，第一凸台部33相对第三板片3的上板面朝上凸起，若干第一凸台部33和若干引流部31绕第一角孔61的外周间隔设置，第一凸台部33相对第三板片3的上板面朝上凸起。In this embodiment, the third plate 3 also includes a plurality of first boss portions 33, the first boss portions 33 are located in the first corner hole area 6, the first boss portions 33 are located at the outer periphery of the first corner hole 61, the first boss portions 33 protrude upward relative to the upper plate surface of the third plate 3, a plurality of first boss portions 33 and a plurality of drainage portions 31 are spaced around the outer periphery of the first corner hole 61, and the first boss portions 33 protrude upward relative to the upper plate surface of the third plate 3.

本实施例中，第二板片2包括若干与引流部31配合的第三凸起部26，第二板片2还包括若干与第一凸台部33配合的第二凸台部21，若干第三凸起部26和若干第二凸台部21沿第一角孔61的外周间隔设置，第三凸起部26具有凹槽。第二凸台部21相对第二板片2的下板面朝下凸起，第二凸台部21和第一凸台部33接触并焊接，第三凸起部26和引流部31围成第一孔道63，第一孔道63和扁管4的通孔41连通，引流部31将冷媒引流到扁管4的通孔41。In this embodiment, the second plate 2 includes a plurality of third protrusions 26 that cooperate with the drainage portion 31, and the second plate 2 also includes a plurality of second bosses 21 that cooperate with the first bosses 33. The plurality of third protrusions 26 and the plurality of second bosses 21 are arranged at intervals along the outer periphery of the first angular hole 61, and the third protrusions 26 have grooves. The second bosses 21 protrude downward relative to the lower plate surface of the second plate 2, the second bosses 21 and the first bosses 33 are in contact and welded, the third protrusions 26 and the drainage portion 31 enclose a first channel 63, the first channel 63 is connected to the through hole 41 of the flat tube 4, and the drainage portion 31 guides the refrigerant to the through hole 41 of the flat tube 4.

本实施例中，第三板片3的第二角孔区7包括若干引出部32，若干引出部3位于第四角孔72的外周，引出部32靠近换热区1012设置，若干引出部32环绕第四角孔72的外周间隔设置。引出部32具有凹槽，引出部32具有朝上开口。本实施例中，引出部32包括引出槽321，第四通道107通过引出槽321和扁管4上的通孔41连通，引出槽321的设置可以将扁管4的通孔41内冷媒引流到第四通道107，冷媒从第四通道107流出换热器，这样有利于降低冷媒的流动阻力，减小冷媒的压降。本实施例中，引出槽321设置多个，这样有利于增加冷媒的流出路径，降低冷媒流出阻力。In this embodiment, the second corner hole area 7 of the third plate 3 includes a plurality of lead-out portions 32, and the plurality of lead-out portions 3 are located at the periphery of the fourth corner hole 72. The lead-out portions 32 are arranged close to the heat exchange area 1012, and the plurality of lead-out portions 32 are arranged at intervals around the periphery of the fourth corner hole 72. The lead-out portion 32 has a groove, and the lead-out portion 32 has an upward opening. In this embodiment, the lead-out portion 32 includes a lead-out groove 321, and the fourth channel 107 is connected to the through hole 41 on the flat tube 4 through the lead-out groove 321. The setting of the lead-out groove 321 can guide the refrigerant in the through hole 41 of the flat tube 4 to the fourth channel 107, and the refrigerant flows out of the heat exchanger from the fourth channel 107, which is conducive to reducing the flow resistance of the refrigerant and reducing the pressure drop of the refrigerant. In this embodiment, a plurality of lead-out grooves 321 are provided, which is conducive to increasing the outflow path of the refrigerant and reducing the outflow resistance of the refrigerant.

本实施例中，第三板片3的第二角孔区7还包括若干第三凸台部34，第三凸台部34相对第三板片3的上板面朝上凸起，第三凸台部34位于第四角孔72的外周，第三凸台部34靠近换热区1012设置，若干第三凸台部34和若干引出部32沿第四角孔72的外周间隔设置。本实施例中，第二板片2包括若干与第三凸台部34配合的第四凸台部22，第二板片2包括若干与引出部32配合第四凸起部27，若干第四凸起部27和若干第四凸台部22沿第四角孔72的外周间隔设置。第四凸起部27具有凹槽。第四凸台部22相对第二板片2的下板面朝下凸起，第三凸台部34和第四凸台部22接触并焊接连接。第四凸起部27和引出部32围成孔道，即第四孔道74，供冷媒从扁管4的通孔41，通过第四孔道74流入第四通道107，引出部32将通孔41内的第二流体引流到第四通道107。In this embodiment, the second corner hole area 7 of the third plate 3 also includes a plurality of third boss portions 34, the third boss portions 34 protrude upward relative to the upper plate surface of the third plate 3, the third boss portions 34 are located at the periphery of the fourth corner hole 72, the third boss portions 34 are arranged close to the heat exchange area 1012, and a plurality of third boss portions 34 and a plurality of lead-out portions 32 are arranged at intervals along the periphery of the fourth corner hole 72. In this embodiment, the second plate 2 includes a plurality of fourth boss portions 22 that cooperate with the third boss portions 34, the second plate 2 includes a plurality of fourth protrusions 27 that cooperate with the lead-out portions 32, and a plurality of fourth protrusions 27 and a plurality of fourth protrusions 22 are arranged at intervals along the periphery of the fourth corner hole 72. The fourth protrusion 27 has a groove. The fourth boss portion 22 protrudes downward relative to the lower plate surface of the second plate 2, and the third boss portion 34 and the fourth boss portion 22 are connected. The fourth protrusion 27 and the lead-out portion 32 form a channel, namely the fourth channel 74 , for the refrigerant to flow from the through hole 41 of the flat tube 4 through the fourth channel 74 into the fourth channel 107 , and the lead-out portion 32 guides the second fluid in the through hole 41 to the fourth channel 107 .

本实施例中，第二板片2和第三板片3在靠近第二角孔62的外周整圈焊接，第二通道105和扁管4的通孔41不连通，第二板片2和第三板片3在靠近第三角孔71的外周整圈焊接，第三通道106和扁管4的通孔41不连通。In this embodiment, the second plate 2 and the third plate 3 are welded in a whole circle around the outer circumference near the second corner hole 62, and the second channel 105 and the through hole 41 of the flat tube 4 are not connected. The second plate 2 and the third plate 3 are welded in a whole circle around the outer circumference near the third corner hole 71, and the third channel 106 and the through hole 41 of the flat tube 4 are not connected.

本实施例中，第一板片1和第二板片2在靠近第二角孔62的外周具有第二孔道64，第二孔道64和第一板间通道S连通，第二通道105通过第二孔道64和第一板间通道S连通；第一板片1和第二板片2在靠近第三角孔71的外周具有第三孔道73，第三孔道73和第一板间通道S连通，第三通道106通过第三孔道73和第一板间通道S连通。第一板片1和第二板片2在靠近第一角孔61的外周整圈焊接，第一通道104和第一板间通道S不连通，第一板片1和第二板片2在靠近第四角孔72的外周整圈焊接，第四通道107和第一板间通道S不连通。In this embodiment, the first plate 1 and the second plate 2 have a second hole 64 on the periphery near the second corner hole 62, the second hole 64 is connected to the first inter-plate channel S, and the second channel 105 is connected to the first inter-plate channel S through the second hole 64; the first plate 1 and the second plate 2 have a third hole 73 on the periphery near the third corner hole 71, the third hole 73 is connected to the first inter-plate channel S, and the third channel 106 is connected to the first inter-plate channel S through the third hole 73. The first plate 1 and the second plate 2 are welded in a full circle around the periphery near the first corner hole 61, and the first channel 104 is not connected to the first inter-plate channel S. The first plate 1 and the second plate 2 are welded in a full circle around the periphery near the fourth corner hole 72, and the fourth channel 107 is not connected to the first inter-plate channel S.

本实施例中，引流槽311为狭窄的槽，引流槽311的面积较小，这样第一凸台部33的面积相对较大，第一凸台部33的面积远大于引流部31的面积，这样有利于提高第一凸台部33和第二凸台部21的焊接面积，增加第一角孔61的焊点密度，保证第二板片2和第三板片3焊接后的结构可靠性，从而提高换热器的结构强度，提高其对冷媒的承压能力，第一凸台部33的设置还可以确保第一通道104的壁厚和焊接后结构的强度。另外，第一凸台部33和第二凸台部21围成孔道，即第一孔道63，供冷媒从第一通道104，通过第一孔道63流入扁管4的通孔41。在其他实施例中，引流部31也可以只设置一个。In this embodiment, the drainage groove 311 is a narrow groove, and the area of the drainage groove 311 is small, so that the area of the first boss portion 33 is relatively large, and the area of the first boss portion 33 is much larger than the area of the drainage portion 31, which is conducive to increasing the welding area of the first boss portion 33 and the second boss portion 21, increasing the density of the welding points of the first corner hole 61, and ensuring the structural reliability of the second plate 2 and the third plate 3 after welding, thereby improving the structural strength of the heat exchanger and its pressure bearing capacity for the refrigerant. The setting of the first boss portion 33 can also ensure the wall thickness of the first channel 104 and the strength of the structure after welding. In addition, the first boss portion 33 and the second boss portion 21 surround a channel, namely the first channel 63, for the refrigerant to flow from the first channel 104 through the first channel 63 into the through hole 41 of the flat tube 4. In other embodiments, only one drainage portion 31 can be set.

本实施例中，引出槽321为狭窄的槽，这样第三凸台部34的面积相对较大，这样也有利于增加第三板片3和第二板片2之间的焊接面积，增加第四角孔72周边的焊点密度，进一步提高换热器的结构强度，第三凸台部34的设置还可以确保第四通道107的壁厚和焊接后的结构的强度。第一凸台部33、第二凸台部21、第三凸台部34以及第四凸台部22的设置还可以保证第三板片3和第二板片2之间的距离，便于部分角孔之间的密封。在其他实施例中，引出部32也可以只设置一个。In this embodiment, the lead-out groove 321 is a narrow groove, so that the area of the third boss portion 34 is relatively large, which is also conducive to increasing the welding area between the third plate 3 and the second plate 2, increasing the density of welding points around the fourth corner hole 72, and further improving the structural strength of the heat exchanger. The arrangement of the third boss portion 34 can also ensure the wall thickness of the fourth channel 107 and the strength of the structure after welding. The arrangement of the first boss portion 33, the second boss portion 21, the third boss portion 34 and the fourth boss portion 22 can also The distance between the third plate 3 and the second plate 2 is ensured to facilitate the sealing between some corner holes. In other embodiments, only one lead-out portion 32 may be provided.

本实施例中，第一角孔61外周的焊点密度、第四角孔72外周的焊点密度相对大于第二角孔62外周的焊点密度，第一角孔61外周的焊点密度、第四角孔72外周的焊点密度相对大于第三角孔71的外周的焊点密度，这样设置可以提高换热器对冷媒的工作压力的承受能力，特别是二氧化碳冷媒，第二角孔62、第三角孔71外周的焊点密度少，可以节省焊料，同时满足换热器对冷却液的工作压强的承受能力。当然，在其他实施例中，四个角孔外周的焊点密度基本相同。In this embodiment, the density of solder joints around the first corner hole 61 and the density of solder joints around the fourth corner hole 72 are relatively greater than the density of solder joints around the second corner hole 62, and the density of solder joints around the first corner hole 61 and the density of solder joints around the fourth corner hole 72 are relatively greater than the density of solder joints around the third corner hole 71. This arrangement can improve the heat exchanger's ability to withstand the working pressure of the refrigerant, especially the carbon dioxide refrigerant. The density of solder joints around the second corner hole 62 and the third corner hole 71 is small, which can save solder and meet the heat exchanger's ability to withstand the working pressure of the coolant. Of course, in other embodiments, the density of solder joints around the four corner holes is basically the same.

在其他实施例中，部分扁管4位于换热区1012，部分扁管4位于第一角孔区6和/或第二角孔区7时，相应的在第一角孔区6和/或第二角孔区7靠近翻边1011的一侧也需设置引流部31和引出部32，这样可以增加冷媒和扁管4的接触面积，增加换热器的强度。In other embodiments, when part of the flat tube 4 is located in the heat exchange area 1012 and part of the flat tube 4 is located in the first corner hole area 6 and/or the second corner hole area 7, a drainage portion 31 and a lead-out portion 32 are also required to be provided on the side of the first corner hole area 6 and/or the second corner hole area 7 close to the flange 1011, so as to increase the contact area between the refrigerant and the flat tube 4 and increase the strength of the heat exchanger.

结合图2-图5，本实施例中，换热器还包括翅片5，翅片5位于第二容纳腔25，至少部分翅片5位于换热区1012，形成第一板间通道S的壁包括翅片5。翅片5的上端面和第一板片1的下板面焊接固定，翅片5的下端面和第二板片2的上板面焊接固定。本实施例中，翅片5包括若干第五凸起部51和第一凹槽部52，第五凸起部51具有朝下开口，第一凹槽部52具有朝上开口，相邻第五凸起部51之间至少具有一个第一凹槽部52，第五凸起部51和第一凹槽部52形成冷却液流动通道，翅片5的设置能够增加冷却液的流动路径，有利于提高冷媒和冷却液的热量交换。本申请只是示意一种翅片5的结构，在其他实施例中，翅片5也可以只设置第五凸起部51或者只设置第一凹槽部52，翅片5的形式可以是多种多样的。在其他实施例中，换热器也可以不设置翅片，第一板片1和第二板片2之间不具有扰流结构，冷却液在第一板片1和第二板片2的板面之间流动。In conjunction with Figures 2 to 5, in this embodiment, the heat exchanger further includes fins 5, the fins 5 are located in the second accommodating cavity 25, at least part of the fins 5 are located in the heat exchange zone 1012, and the wall forming the first inter-plate channel S includes the fins 5. The upper end surface of the fins 5 is welded and fixed to the lower plate surface of the first plate 1, and the lower end surface of the fins 5 is welded and fixed to the upper plate surface of the second plate 2. In this embodiment, the fins 5 include a plurality of fifth protrusions 51 and first grooves 52, the fifth protrusions 51 have a downward opening, the first grooves 52 have an upward opening, and there is at least one first groove 52 between adjacent fifth protrusions 51. The fifth protrusions 51 and the first grooves 52 form a coolant flow channel, and the arrangement of the fins 5 can increase the flow path of the coolant, which is conducive to improving the heat exchange between the refrigerant and the coolant. This application only illustrates a structure of the fins 5. In other embodiments, the fins 5 can also be provided with only the fifth protrusions 51 or only the first grooves 52, and the forms of the fins 5 can be various. In other embodiments, the heat exchanger may not be provided with fins, there is no turbulent structure between the first plate 1 and the second plate 2 , and the coolant flows between the plate surfaces of the first plate 1 and the second plate 2 .

图13-图17示意换热器的第二种实施例中，换热器不设置翅片5，板片101为点波式板片。本实施例中，第二板片2具有若干第一凸起部24，若干第一凸起部24间隔设置，第一凸起部24相对第二板片2的上板面朝上凸起，第一凸起部24朝向第一板片1凸起，第一凸起部24在朝向第三板片3的一侧具有凹槽，相邻第一凸起部24之间形成沟槽，冷却液流动需要绕过第一凸起部24，第一凸起部24的设置有利于增加第二板片2对冷却液的扰流效果，还可以增大冷却液的流动路径，增加冷却液和冷媒的接触面积，提高换热效率。相应的，第一板片1上设置第二凸起部12，第二凸起部12相对第一板片1的下板面朝下凸起，第二凸起部12朝向第二板片2凸起，第二凸起部12在背离第二板片2的一侧具有凹槽，相邻第二凸起部12之间形成沟槽，至少部分第二凸起部12的底端和第一凸起部24的顶端接触并焊接，第一凸起部24和第二凸起部12之间形成冷却液通道，这样可以增大冷却液的流动空间；另外，冷却液流动需要绕过第二凸起部12的凸起，这样可以进一步增大冷却液的流动路径，并增加板片101对冷却液的扰流效果，第二凸起部12和第一凸起部24焊接还可以增强板片101的连接强度。在其他实施例中，还可以第二板片2具有第一凸起部24，第一板片1不具有第二凸起部12，第二凸起部和板片2的下板面接触并焊接；或者，第二板片2不具有第一凸起部24，第一板片1具有第二凸起部12，第二凸起部12和第二板片2的上板面接触并焊接，这样也可以增加冷却液的流动路径。FIG. 13 to FIG. 17 illustrate a second embodiment of a heat exchanger, in which the heat exchanger is not provided with fins 5, and the plate 101 is a point wave plate. In this embodiment, the second plate 2 has a plurality of first protrusions 24, and the plurality of first protrusions 24 are arranged at intervals. The first protrusions 24 protrude upward relative to the upper plate surface of the second plate 2, and the first protrusions 24 protrude toward the first plate 1. The first protrusions 24 protrude toward the third plate 1. One side of the plate 3 has a groove, and a groove is formed between adjacent first protrusions 24. The coolant needs to flow around the first protrusions 24. The setting of the first protrusions 24 is beneficial to increasing the turbulence effect of the second plate 2 on the coolant, and can also increase the flow path of the coolant, increase the contact area between the coolant and the refrigerant, and improve the heat exchange efficiency. Correspondingly, a second protrusion 12 is provided on the first plate 1, and the second protrusion 12 protrudes downward relative to the lower plate surface of the first plate 1, and the second protrusion 12 protrudes toward the second plate 2, and the second protrusion 12 has a groove on the side away from the second plate 2, and a groove is formed between adjacent second protrusions 12, and the bottom end of at least part of the second protrusion 12 is in contact with and welded to the top end of the first protrusion 24, and a coolant channel is formed between the first protrusion 24 and the second protrusion 12, which can increase the flow space of the coolant; in addition, the coolant flow needs to bypass the protrusion of the second protrusion 12, which can further increase the flow path of the coolant and increase the turbulence effect of the plate 101 on the coolant, and the welding of the second protrusion 12 and the first protrusion 24 can also enhance the connection strength of the plate 101. In other embodiments, the second plate 2 may have a first protrusion 24, the first plate 1 may not have a second protrusion 12, and the second protrusion may contact and weld with the lower plate surface of the plate 2; or, the second plate 2 may not have a first protrusion 24, the first plate 1 may have a second protrusion 12, and the second protrusion 12 may contact and weld with the upper plate surface of the second plate 2, which may also increase the flow path of the coolant.

本实施例中，第三板片3和第一板片1具有第一凸部37，第三板片3的角孔区具有第一凸部37，第一凸部37朝向第二板片2凸起的第一凸部37，第一凸部37在背离第二板片2的一侧具有凹槽，第一凸部37设置于第三板片3的第一角孔61的外周和第四角孔72的外周。靠近第三板片3的第一角孔61的外周，相邻第一凸部37之间形成沟槽，将冷媒从第一通道104引流到扁管4的通孔41，靠近第三板片3的第四角孔72的外周，相邻第一凸部37之间形成沟槽，将冷媒从扁管4的通孔41引流到第四通道107。In this embodiment, the third plate 3 and the first plate 1 have a first convex portion 37, the corner hole area of the third plate 3 has a first convex portion 37, the first convex portion 37 is the first convex portion 37 protruding toward the second plate 2, the first convex portion 37 has a groove on the side away from the second plate 2, and the first convex portion 37 is arranged on the outer periphery of the first corner hole 61 of the third plate 3 and the outer periphery of the fourth corner hole 72. A groove is formed between adjacent first convex portions 37 near the outer periphery of the first corner hole 61 of the third plate 3, and the refrigerant is guided from the first channel 104 to the through hole 41 of the flat tube 4, and a groove is formed between adjacent first convex portions 37 near the outer periphery of the fourth corner hole 72 of the third plate 3, and the refrigerant is guided from the through hole 41 of the flat tube 4 to the fourth channel 107.

本实施例中，第二板片2的角孔区具有与第一凸部37配合的第二凸部28，第二凸部28设置于第一板片1的第一角孔61的外周和第四角孔72的外周，第二凸部28朝向第三板片3凸起，第二凸部28在靠近第一板片1的一侧具有凹槽。靠近第一角孔61的外周，板片2的第二凸部28和板片3的第一凸部37接触并焊接固定，这样可以增加第三板片3和第二板片 2的连接强度，提高换热器的强度，增加换热器的承压能力。In this embodiment, the corner hole area of the second plate 2 has a second convex portion 28 that cooperates with the first convex portion 37. The second convex portion 28 is arranged on the outer periphery of the first corner hole 61 of the first plate 1 and the outer periphery of the fourth corner hole 72. The second convex portion 28 protrudes toward the third plate 3, and the second convex portion 28 has a groove on the side close to the first plate 1. Close to the outer periphery of the first corner hole 61, the second convex portion 28 of the plate 2 and the first convex portion 37 of the plate 3 are in contact and welded to fix, so that the third plate 3 and the second plate 3 can be increased. 2. The connection strength is improved, the strength of the heat exchanger is improved, and the pressure bearing capacity of the heat exchanger is increased.

在其他实施例中，第三板片3不设置第一凸部37、第二板片2不设置第二凸部28，第三板片3的第一角孔61的外周设置引流部31和第一凸台部33，第三板片3第四角孔72的外周设置引出部32和第三凸台部34，在第二板片2的第一角孔61的外周设置第三凸起部26和第二凸台部21，在第二板片2第四角孔72的外周设置第四凸起部27和第四凸台部22，这样也可以实现对冷媒的引流作用，以及增强换热器的强度。In other embodiments, the third plate 3 is not provided with the first protrusion 37, and the second plate 2 is not provided with the second protrusion 28. The drainage portion 31 and the first boss portion 33 are provided on the periphery of the first corner hole 61 of the third plate 3, the lead-out portion 32 and the third boss portion 34 are provided on the periphery of the fourth corner hole 72 of the third plate 3, the third protrusion 26 and the second boss portion 21 are provided on the periphery of the first corner hole 61 of the second plate 2, and the fourth protrusion 27 and the fourth boss portion 22 are provided on the periphery of the fourth corner hole 72 of the second plate 2. In this way, the drainage effect on the refrigerant can be achieved and the strength of the heat exchanger can be enhanced.

在其他实施例中，第二板片2还可以是单重人字波式板片或者多重人字波式板片(图中未示出)，单重人字波指的是第一凸起部24包括呈角度设置的两个延伸段(图中未示出)，每个延伸段相对于板片101的长度方向倾斜设置，两延伸段可以沿板片101的宽度方向对称设置，也可以非对称设置。多重人字波指的是第一凸起部24包括多个呈角度设置的延伸段，各延伸段相对于板片101的长度方向倾斜设置，延伸段的数量为大于两个。当然，在其他实施例中，板片101还可以设置其他形式的结构来增长冷却液的流动路径。本申请中只是示例两种点波式板片101的结构，第一凸起部24、第二凸起部12的形式也不限于上述描述，第一凸起部24、第二凸起部12可以是多样的。In other embodiments, the second plate 2 can also be a single herringbone wave plate or a multiple herringbone wave plate (not shown in the figure), and the single herringbone wave means that the first protrusion 24 includes two extension sections (not shown in the figure) set at an angle, each extension section is inclined relative to the length direction of the plate 101, and the two extension sections can be symmetrically set along the width direction of the plate 101, or asymmetrically set. Multiple herringbone waves mean that the first protrusion 24 includes a plurality of extension sections set at an angle, each extension section is inclined relative to the length direction of the plate 101, and the number of extension sections is greater than two. Of course, in other embodiments, the plate 101 can also be provided with other forms of structures to increase the flow path of the coolant. The present application only illustrates the structure of two point wave plates 101, and the forms of the first protrusion 24 and the second protrusion 12 are not limited to the above description, and the first protrusion 24 and the second protrusion 12 can be diverse.

在其他实施例中，相邻板片之间均设置扁管4，板片101与其相邻板片101之间的通孔41流通冷却液，板片101与另一相邻板片101之间的通孔41流通冷媒，冷却液和冷媒在扁管4的通孔41内流动进行热量交换。例如，第一板片1和第二板片2之间设置扁管4，第二板片2和第三板片3之间也设置扁管4，第一板片1和第二板片2之间的扁管4供冷媒流动，第二板片2和第三板片3之间的扁管4供冷夜流动，这样也可以实现冷媒和冷却液进行热量交换。In other embodiments, flat tubes 4 are provided between adjacent plates, and cooling liquid flows through the through holes 41 between the plate 101 and its adjacent plate 101, and refrigerant flows through the through holes 41 between the plate 101 and another adjacent plate 101, and the cooling liquid and the refrigerant flow in the through holes 41 of the flat tubes 4 to exchange heat. For example, a flat tube 4 is provided between the first plate 1 and the second plate 2, and a flat tube 4 is also provided between the second plate 2 and the third plate 3, and the flat tube 4 between the first plate 1 and the second plate 2 is for the refrigerant to flow, and the flat tube 4 between the second plate 2 and the third plate 3 is for the refrigerant to flow, so that heat exchange between the refrigerant and the cooling liquid can also be achieved.

需要说明的是：需要说明的是：以上实施例仅用于说明本申请而并非限制本申请所描述的技术方案，尽管本说明书参照上述的实施例对本申请已进行了详细的说明，但是，本领域的普通技术人员应当理解，所属技术领域的技术人员仍然可以对申请进行修改或者等同替换，而一切不脱离本申请的精神和范围的技术方案及其改进，均应涵盖在本申请的权利要求范围内。 It should be noted that: It should be noted that: the above embodiments are only used to illustrate the present application and are not intended to limit the technical solutions described in the present application. Although the present application has been described in detail in this specification with reference to the above embodiments, it should be understood by those skilled in the art that they can still modify or replace the application with equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present application should be included in the scope of the claims of the present application. Within the enclosure.

Claims

A heat exchanger, characterized in that it comprises a flat tube (4) and a plurality of plates (101), wherein the plurality of plates (101) are stacked and arranged, and along the stacking direction of the plates (101), the flat tube (4) is arranged between at least one group of adjacent plates (101), and the flat tube (4) has a plurality of through holes (41), and at least another group of adjacent plates (101) has a first inter-plate channel (S), and the heat exchanger comprises a first flow channel and a second flow channel, wherein the first flow channel and the second flow channel are not connected, and the fluid in the first flow channel can exchange heat with the fluid in the second flow channel, and the through holes (41) of the flat tube (4) are part of the first flow channel, and the first inter-plate channel (S) is part of the second flow channel.

The heat exchanger according to claim 1 is characterized in that the flat tube (4) is provided between at least one of the plates (101) and an adjacent plate (101), and a first inter-plate channel (S) is provided between the plate (101) and another adjacent plate (101).

The heat exchanger according to claim 1 or 2 is characterized in that the flat tube (4) is provided between the plate (101) and an adjacent plate (101), and a first inter-plate channel (S) is provided between the plate (101) and another adjacent plate (101), and the first inter-plate channel (S) and the flat tube (4) are alternately arranged along the stacking direction of the plates (101).

The heat exchanger according to any one of claims 1 to 3 is characterized in that the multiple plates (101) include a first plate (1), a second plate (2), and a third plate (3), and the first plate (1), the second plate (2), and the third plate (3) are stacked in sequence, and the heat exchanger also includes a fin (5), and the fin (5) is located between the second plate (2) and the first plate (1) adjacent thereto, and the wall forming the first inter-plate channel (S) includes the fin (5), and the flat tube (4) is located between the second plate (2) and the third plate (3) adjacent thereto.

The heat exchanger according to claim 4 is characterized in that the flat tube (4) and the plate surface of the plate (101) are parallel, the upper surface of the flat tube (4) and the second plate (2) are welded together, the lower surface of the flat tube (4) and the third plate (3) are welded together, and the through hole (41) penetrates the flat tube (4) along the length direction of the flat tube (4).

The heat exchanger according to claim 5, characterized in that the flat tube (4) comprises one flat tube (4), and the flat tube (4) comprises a plurality of the through holes (41);

Alternatively, the flat tube (4) comprises a plurality of flat tubes (4), each of the plurality of flat tubes (4) comprising a plurality of The through holes (41) are formed in a stacked manner along the height direction of the heat exchanger; or, the plurality of flat tubes (4) are arranged at intervals along the width direction of the heat exchanger, and/or, the flat tubes (4) are arranged at intervals along the length direction of the heat exchanger.

The heat exchanger according to claim 6 is characterized in that the plate (101) comprises a body (1015) and a flange (1011), the body (1015) comprises a heat exchange zone (1012), the flange (1011) is arranged along the circumference of the body (1015), the flange (1011) protrudes upward relative to the body (1015), at least part of the flat tube (4) is located in the heat exchange zone (1012), the flat tube (4) comprises a first side wall (43) and a second side wall (44), the first side wall (43) and the second side wall (44) are located on both sides of the flat tube (4) along the width direction of the flat tube (4), the first side wall (43) and the flange (1011) are clearance-fitted or contact-arranged, and the second side wall (44) and the flange (1011) are clearance-fitted or contact-arranged.

The heat exchanger according to claim 7 is characterized in that the heat exchanger has four channels, the heat exchanger comprises a first channel (104), a second channel (105), a third channel (106) and a fourth channel (107); along the width direction of the heat exchanger, the first channel (104) and the third channel (106) are located on the same side of the heat exchanger, the second channel (105) and the fourth channel (107) are located on the same side of the heat exchanger, the first channel (104) and the fourth channel (107) are arranged diagonally, the second channel (105) and the third channel (106) are arranged diagonally, two of the four channels of the heat exchanger are for the first fluid to flow, which are connected through the through holes (41) of the flat tubes (4) and are not connected to the first inter-plate channels (S); the other two of the four channels are for the second fluid to flow, which are connected through the first inter-plate channels (S) and are not connected to the through holes (41).

The heat exchanger according to claim 8 is characterized in that the third plate (3) includes a plurality of guide portions (31) and a plurality of first boss portions (33), the plurality of guide portions (31) and the plurality of first boss portions (33) are arranged at intervals along the outer periphery of the first angular hole (61), the guide portion (31) has a groove, the first boss portion (33) protrudes upward relative to the upper plate surface of the third plate (3), the second plate (2) includes a plurality of third protrusions (26) cooperating with the guide portion (31), the second plate (2) also includes a plurality of second boss portions (21) cooperating with the first boss portion (33), the plurality of third protrusions (26) and the plurality of second boss portions (21) are arranged at intervals along the outer periphery of the first angular hole (61), the third protrusion (26) has a groove, the second boss portion (21) protrudes upward relative to the upper plate surface of the third plate (3), The lower plate surface of the second plate (2) is raised downward, the second boss portion (21) and the first boss portion (33) are in contact and welded, the third boss portion (26) and the drainage portion (31) form a first channel (63), and the first channel (63) is connected to the through hole (41) of the flat tube (4);

And/or, the third plate (3) includes a plurality of lead-out portions (32) and a plurality of third boss portions (34), the plurality of third boss portions (34) and the plurality of lead-out portions (32) are arranged at intervals along the outer periphery of the fourth corner hole (72), the lead-out portion (32) has a groove, the third boss portion (34) protrudes upward relative to the upper plate surface of the third plate (3), and the second plate (2) also includes a plurality of fourth protrusions (27) and a plurality of fourth boss portions (22), the plurality of fourth protrusions The fourth boss portion (27) and a plurality of the fourth boss portions (22) are arranged at intervals along the outer periphery of the fourth corner hole (72), the fourth boss portion (27) has a groove, the fourth boss portion (22) protrudes downward relative to the lower plate surface of the second plate (2), the third boss portion (34) and the fourth boss portion (22) are welded, the fourth boss portion (27) and the lead-out portion (32) form a fourth channel (74), and the fourth channel (74) is connected to the through hole (41) of the flat tube (4).