WO2020238781A1

WO2020238781A1 - Plate heat exchanger

Info

Publication number: WO2020238781A1
Application number: PCT/CN2020/091712
Authority: WO
Inventors: 李华; 郑希茹
Original assignee: 浙江三花智能控制股份有限公司
Priority date: 2019-05-24
Filing date: 2020-05-22
Publication date: 2020-12-03
Also published as: CN111981876A

Abstract

Provided is a plate heat exchanger, comprising a heat exchange core and an integrated member. The integrated member comprises a matching member and a flow guide pipe, wherein the matching member comprises a first cavity, a first port and a second port, and the flow guide pipe comprises a second cavity, a fourth port and a fifth port. The matching member is fixedly connected to the flow guide pipe. The flow guide pipe passes through the first cavity and extends toward a first sub-pore passage, and the first cavity is spaced apart from the second cavity by means of a second matching part. A first blocking part and the second matching part are sealed so as to isolate the first sub-pore passage from a second sub-pore passage. A first flow channel comprises a first inter-plate sub-channel and a second inter-plate sub-channel. The first inter-plate sub-channel is separated from the second inter-plate sub-channel by means of a third plate. The first inter-plate sub-channel is in communication with the first sub-pore passage and the second sub-pore passage, the second inter-plate sub-channel is in communication with the second sub-pore passage and a second pore passage, and flow directions of fluids in the first inter-plate sub-channel and the second inter-plate sub-channel are the opposite of each other. The present application can facilitate the reduction of the space occupied by a pipeline matching a plate heat exchanger.

Description

板式换热器Plate heat exchanger

技术领域Technical field

本发明涉及热交换技术领域，尤其涉及一种板式换热器。The present invention relates to the field of heat exchange technology, in particular to a plate heat exchanger.

背景技术Background technique

板式换热器因其质轻、体积小的特点被应用于很多制冷领域，板式换热器由多张板片堆叠而成，板式换热器内部流动两种相互隔离的工质，两种工质包括制冷剂和载冷剂，二者在板式换热器内进行热交换。发明人所了解的一种方式是，制冷剂进入板式换热器的方式是沿板式换热器长度的一侧进入，然后从另一侧离开，板式换热器用于与外部元件对接的管路分布于板式换热器长度方向两侧，板式换热器配套管路占据空间较大。Plate heat exchangers are used in many refrigeration fields due to their light weight and small size. Plate heat exchangers are made up of multiple plates stacked. Two isolated working fluids flow inside the plate heat exchanger. The quality includes refrigerant and carrier refrigerant, and the two exchange heat in the plate heat exchanger. One way that the inventor knows is that the refrigerant enters the plate heat exchanger by entering along one side of the length of the plate heat exchanger, and then leaving from the other side. The plate heat exchanger is used for the pipeline connecting with external components. Distributed on both sides of the length of the plate heat exchanger, the supporting pipelines of the plate heat exchanger occupy a large space.

发明内容Summary of the invention

本申请提供的板式换热器，其结构有利于减小板式换热器配套管路所占用的空间。The structure of the plate heat exchanger provided by the present application is beneficial to reduce the space occupied by the supporting pipelines of the plate heat exchanger.

本申请实施例提供了一种板式换热器，包括换热芯体和位于所述换热芯体厚度方向一侧的集成件；所述换热芯体包括多张层叠设置的板片，所述多张板片包括多张第一板片、多张第二板片和一张第三板片；多张板片层叠形成不相通的第一流道和第二流道；第一板片和第二板片均包括第一孔口、第二孔口、第三孔口和第四孔口；第三板片包括第二孔口、第三孔口和第四孔口；其中，各所述第一板片的第一孔口和各所述第二板片的第一孔口至少部分区域相对形成第一孔道；各所述第一板片的第二、三、四孔口，各所述第二板片的第二、三、四孔口以及第三板片的第二、三、四孔口分别至少部分区域相对形成第二孔道、第三孔道和第四孔道；所述第一孔道和第二孔道为第一流道的一部分，所述第三孔道和所述第四孔道为第二流道的一部分；所述第三板片包括第一阻挡部；所述第一阻挡部至少部分位于所述第一孔道，所述第一孔道包括位于第一阻挡部两侧的第一子孔道和第二子孔道，第一子孔道比第二子孔道靠近集成件；所述第一流道还包括第一子板间通道和第二子板间通道，所述第一子板间通道和所述第二子板间通道通过所述第三板片分隔，所述第一子板间通道连通所述第一子孔道和所述第二孔道，所述第二子板间通道连通所述第二子孔道和所述第二孔道；The embodiment of the present application provides a plate heat exchanger, which includes a heat exchange core and an integrated part located on one side of the thickness direction of the heat exchange core; the heat exchange core includes a plurality of stacked plates, so The multiple plates include multiple first plates, multiple second plates, and one third plate; multiple plates are stacked to form a first flow channel and a second flow channel that are not connected; the first plate and The second plate includes a first orifice, a second orifice, a third orifice, and a fourth orifice; the third plate includes a second orifice, a third orifice, and a fourth orifice; where each The first hole of the first plate and the first hole of each of the second plates at least partly form a first hole; the second, third, and fourth holes of each of the first plates, each The second, third, and fourth orifices of the second plate and the second, third, and fourth orifices of the third plate respectively at least partially form a second channel, a third channel, and a fourth channel; A channel and a second channel are part of the first channel, the third channel and the fourth channel are a part of the second channel; the third plate includes a first blocking portion; the first blocking portion At least partly located in the first channel, the first channel includes a first sub channel and a second sub channel located on both sides of the first blocking portion, the first sub channel is closer to the integrated component than the second sub channel; the first flow The channel also includes a first inter-sub-board channel and a second inter-sub-board channel. The first inter-sub-board channel and the second inter-sub-board channel are separated by the third plate, and the first sub-board A channel connects the first sub-channel and the second channel, and the second inter-plate channel connects the second sub-channel and the second channel;

所述集成件包括配合件和导流管，所述配合件具有第一腔，所述配合件还开设有与所述第一腔连通的第一端口和第二端口，所述第一端口连通所述第一腔与所述第一子孔道，所述第二端口用于对接外部元件；The integrated piece includes a fitting piece and a draft tube, the fitting piece has a first cavity, the fitting piece is also provided with a first port and a second port communicating with the first cavity, the first port communicating The first cavity and the first sub-channel, and the second port is used for connecting external components;

所述导流管具有第二腔，所述导流管还开设有与所述第二腔连通的第四端口和第五端口；所述导流管包括与所述配合件固定连接的第一管部、以及自第一管部经第一腔并从第一端口伸入第一孔道的第二管部；所述第四端口设于所述第一管部；所述第四端口用于对接外部元件；所述第一阻挡部与所述第二管部固定连接且于连接处密封，以使得所述第二子孔道与所述第一子孔道相隔断，所述第五端口设于所述第二管部，所述第五端口连通所述第二腔与所述第二子孔道。The draft tube has a second cavity, and the draft tube is also provided with a fourth port and a fifth port communicating with the second cavity; the draft tube includes a first fixed connection with the fitting piece. The tube portion, and the second tube portion extending from the first tube portion through the first cavity and from the first port into the first channel; the fourth port is provided in the first tube portion; the fourth port is used for Butt the external components; the first blocking portion and the second pipe portion are fixedly connected and sealed at the connection, so that the second sub-channel is separated from the first sub-channel, and the fifth port is provided at In the second tube portion, the fifth port communicates with the second cavity and the second sub-channel.

本申请的板式换热器包括集成件，集成件有用于对接外部元件的集成件第二端口和第四端口，使得集成件能够同时满足针对第一流道内的流体的进出口的功能，有利于优化板式换热器配套管路所占用的安装空间；集成件包括配合件和导流管，所述导流管包括与所述配合件固定连接的第一管部、以及自第一管部经第一腔并从第一端口伸入第一孔道的第二管部，集成件占用空间较小。The plate heat exchanger of the present application includes an integrated part. The integrated part has a second port and a fourth port for connecting external components, so that the integrated part can simultaneously meet the function of importing and exporting fluid in the first flow channel, which is beneficial to optimization The installation space occupied by the supporting pipeline of the plate heat exchanger; the integrated part includes a matching part and a flow guide tube, the flow guide tube includes a first tube part fixedly connected with the matching part, and a A cavity extends from the first port into the second pipe part of the first channel, and the integrated piece occupies a small space.

附图说明Description of the drawings

图1为本申请板式换热器的一种立体结构示意图；Figure 1 is a schematic diagram of a three-dimensional structure of the plate heat exchanger of the application;

图2为本申请图1所示的板式换热器的剖面示意图；Figure 2 is a schematic cross-sectional view of the plate heat exchanger shown in Figure 1 of this application;

图3为本申请图1所示的板式换热器的***图；Figure 3 is an exploded view of the plate heat exchanger shown in Figure 1 of this application;

图4为本申请板式换热器做斜角对流的示意图；Figure 4 is a schematic diagram of oblique convection of the plate heat exchanger of the application;

图5为本申请板式换热器的导流管与第一阻挡部的固定方式示意图；Fig. 5 is a schematic diagram of the fixing method of the guide tube and the first blocking part of the plate heat exchanger of the present application;

图6为本申请板式换热器配合件与第一边板固定方式结构放大示意图；Fig. 6 is an enlarged schematic diagram of the structure of the fixing method of the plate heat exchanger fitting and the first side plate of the application;

图7为本申请板式换热器的另一种剖面结构示意图；FIG. 7 is a schematic diagram of another cross-sectional structure of the plate heat exchanger of this application;

图8为本申请板式换热器的又一种剖面结构示意图；FIG. 8 is a schematic diagram of another cross-sectional structure of the plate heat exchanger of the application;

图9为本申请图1中板式换热器的配合件的固定方式示意图；Fig. 9 is a schematic diagram of the fixing method of the mating parts of the plate heat exchanger in Fig. 1 of this application;

图10为图9中板式换热器的上壳体结构示意图；Figure 10 is a schematic diagram of the upper shell structure of the plate heat exchanger in Figure 9;

图11为图9中板式换热器的下壳体结构示意图；Figure 11 is a schematic diagram of the lower shell structure of the plate heat exchanger in Figure 9;

图12为本发明板式换热器作为蒸发器的一种流路示意图；Figure 12 is a schematic diagram of a flow path of the plate heat exchanger of the present invention as an evaporator;

图13为本发明板式换热器作为蒸发器的另一种流路示意图；Figure 13 is a schematic diagram of another flow path of the plate heat exchanger of the present invention as an evaporator;

图14为本发明板式换热器作为冷凝器的一种流路示意图；Figure 14 is a schematic diagram of a flow path of the plate heat exchanger of the present invention as a condenser;

图15为本发明板式换热器作为冷凝器的另一种流路示意图。Fig. 15 is a schematic diagram of another flow path of the plate heat exchanger of the present invention as a condenser.

具体实施方式Detailed ways

本申请提供的板式换热器，通过优化板式换热器中流体的进出口，以及配合板式换热器内的两回程流道设计，有利于优化板式换热器配套管路占用的安装空间，提高板式换热器的换热效果。为了使本领域的技术人员更好的理解本发明的技术方案，下面结合附图和具体实施例对本发明作进一步的详细说明。The plate heat exchanger provided in this application optimizes the inlet and outlet of the fluid in the plate heat exchanger and cooperates with the design of the two-pass flow channel in the plate heat exchanger, which is beneficial to optimize the installation space occupied by the supporting pipelines of the plate heat exchanger. Improve the heat exchange effect of the plate heat exchanger. In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

如图1，2，3所示，板式换热器100包括换热芯体和集成件，换热芯体包括多张板片101，板片101大致呈矩形形状，多张板片101包括多个第一板片1011、多个第二板片1012以及一张第三板片1013，多张板片101层叠设置构成第一流道和第二流道，第一流道和第二流道不相通。As shown in Figures 1, 2, and 3, the plate heat exchanger 100 includes a heat exchange core and an integrated part. The heat exchange core includes a plurality of plates 101. The plates 101 are roughly rectangular in shape. A first plate 1011, a plurality of second plates 1012, and a third plate 1013, a plurality of plates 101 are stacked to form a first flow channel and a second flow channel, the first flow channel and the second flow channel are not connected .

第一板片1011和第二板片1012均包括第一孔口1、第二孔口2、第三孔口3、第四孔口4，第三板片1013包括第二孔口2、第三孔口3、第四孔口4。The first plate 1011 and the second plate 1012 each include a first orifice 1, a second orifice 2, a third orifice 3, and a fourth orifice 4. The third plate 1013 includes a second orifice 2, a second orifice Three orifices 3, and a fourth orifice 4.

多张第一板片1011的第一孔口1与多张第二板片1012的第一孔口1至少部分区域相对形成第一孔道103，第三板片1013还包括第一阻挡部13，第一阻挡部13的至少部分位于第一孔道103，第一阻挡部13开设有第二安装孔131，第二安装孔131的尺寸小于第一孔口1的尺寸。第一孔道103包括位于第一阻挡部13的两侧的第一子孔道123和第二子孔道124，第一子孔道123比第二子孔道124靠近集成件。第一板片1011的第二孔口2、第二板片1012的第二孔口2和第三板片1013的第二孔口2层叠构成第二孔道104。相应的，第一板片1011的第三孔口3、第二板片1012的第三孔口3和第三板片1013的第三孔口3至少部分区域形成第三孔道。第一板片1011的第四孔口4、第二板片1012的第四孔口4和第三板片1013的第四孔口4至少部分区域相对形成第四孔道。第一子孔道123、第二子孔道124和第二孔道104均属于第一流道的一部分。第三孔道和第四孔道为第二流道的一部分。The first apertures 1 of the plurality of first plates 1011 and the first apertures 1 of the plurality of second plates 1012 at least partially oppose each other to form a first channel 103, and the third plate 1013 also includes a first blocking portion 13, At least part of the first blocking portion 13 is located in the first channel 103, the first blocking portion 13 is provided with a second mounting hole 131, and the size of the second mounting hole 131 is smaller than the size of the first hole 1. The first channel 103 includes a first sub-channel 123 and a second sub-channel 124 located on both sides of the first blocking portion 13, and the first sub-channel 123 is closer to the integrated component than the second sub-channel 124. The second orifice 2 of the first plate 1011, the second orifice 2 of the second plate 1012 and the second orifice 2 of the third plate 1013 are stacked to form the second channel 104. Correspondingly, the third aperture 3 of the first plate 1011, the third aperture 3 of the second plate 1012, and the third aperture 3 of the third plate 1013 at least partially form a third channel. The fourth orifice 4 of the first plate 1011, the fourth orifice 4 of the second plate 1012, and the fourth orifice 4 of the third plate 1013 are at least partially opposed to form a fourth channel. The first sub-channel 123, the second sub-channel 124, and the second channel 104 all belong to a part of the first flow channel. The third channel and the fourth channel are part of the second flow channel.

第一流道还包括第一板间通道102、第一板间通道102通过第三板片1013分隔为第一子板间通道1021和第二子板间通道1022，第一子板间通道1021连通第一子孔道123和第二孔道104，第二子板间通道1022连通第二子孔道124和第二孔道104，第一子板间通道1021和第二子板间通道1022内的流体的流动方向相反。当然，第二流道包括第二板间通道，第二板间通道与第一板间通道不相连通。The first flow path also includes a first inter-board channel 102, the first inter-board channel 102 is divided into a first inter-sub-board channel 1021 and a second inter-sub-board channel 1022 by a third plate 1013, and the first inter-board channel 1021 is connected The first sub-channel 123 and the second channel 104, the second inter-sub-board channel 1022 connects the second sub-channel 124 and the second channel 104, the flow of fluid in the first inter-sub-channel 1021 and the second inter-sub-channel 1022 The direction is opposite. Of course, the second flow channel includes a second inter-plate passage, and the second inter-plate passage is not connected to the first inter-plate passage.

板式换热器100还包括集成件。集成件包括配合件11和导流管12，配合件11位于换热芯体厚度方向的一侧，配合件11具有第一腔110，配合件11还开设有与第一腔110连通的第一端口111和第二端口112，第一腔110通过第一端口111与第一子孔道123连通，第一腔110与第一子孔道123连通是直接连通，即第一端口111的一侧为第一腔110，另一侧为第一子孔道123，第一腔110通过第二端口112与板式换热器100的外部连通，第一腔110与板式换热器100的外部连通也是直接连通，即第二端口112一侧为第一腔，另一侧为板式换热器100的外部。第二端口112用于对接外部元件。The plate heat exchanger 100 also includes integrated parts. The integrated piece includes a fitting piece 11 and a draft tube 12. The fitting piece 11 is located on one side in the thickness direction of the heat exchange core. The fitting piece 11 has a first cavity 110, and the fitting piece 11 is also provided with a first cavity 110 communicating with the first cavity 110. Port 111 and the second port 112, the first cavity 110 communicates with the first sub-channel 123 through the first port 111, the first cavity 110 communicates with the first sub-channel 123 directly, that is, one side of the first port 111 is the first One cavity 110, the other side is the first sub-channel 123, the first cavity 110 communicates with the outside of the plate heat exchanger 100 through the second port 112, the first cavity 110 communicates with the outside of the plate heat exchanger 100 directly, That is, one side of the second port 112 is the first cavity, and the other side is the outside of the plate heat exchanger 100. The second port 112 is used to interface with external components.

导流管12包括第二腔120，导流管12具有与第二腔120连通的第四端口121和第五端口122，第二腔120通过第四端口121与板式换热器100的外部连通。第二腔120与板式换热器100的外部连通也是直接连通，即第四端口121一侧为第二腔120，另一侧为板式换热器100的外部。导流管12包括与配合件11固定连接的第一管部1201、以及自第一管部1201经第一腔110并从第一端口111伸入第一孔道103的第二管部1202。The draft tube 12 includes a second cavity 120. The draft tube 12 has a fourth port 121 and a fifth port 122 communicating with the second cavity 120. The second cavity 120 communicates with the outside of the plate heat exchanger 100 through the fourth port 121 . The second cavity 120 communicates with the outside of the plate heat exchanger 100 directly, that is, one side of the fourth port 121 is the second cavity 120, and the other side is the outside of the plate heat exchanger 100. The guide tube 12 includes a first tube 1201 fixedly connected to the fitting 11 and a second tube 1202 extending from the first tube 1201 through the first cavity 110 and extending from the first port 111 into the first channel 103.

第四端口121设于第一管部1201，第四端口121用于对接外部元件。第一阻挡部13与第二管部1202周向焊接固定连接，且于连接处密封，以使得第二子孔道124与第一子孔道123相隔断，第五端口122设于第二管部1202，第五端口122连通第二腔120与第二子孔道124。The fourth port 121 is provided in the first pipe portion 1201, and the fourth port 121 is used for docking with external components. The first blocking portion 13 and the second pipe portion 1202 are circumferentially welded and fixedly connected, and are sealed at the joint so that the second sub-channel 124 is separated from the first sub-channel 123, and the fifth port 122 is provided in the second pipe portion 1202 , The fifth port 122 communicates with the second cavity 120 and the second sub-channel 124.

沿板片101层叠的方向，可参考图2中带双箭头的实线所示意的方向，在图2中该方向大致竖直，导流管12的第二管部1202穿过第一腔110并经第一端口111向第一子孔道123延伸，第一腔110与第二腔120相隔断。第二腔120通过第五端口122与第二子孔道124连通。Along the stacking direction of the plates 101, refer to the direction indicated by the solid line with double arrows in FIG. 2. In FIG. 2, the direction is approximately vertical, and the second tube portion 1202 of the draft tube 12 passes through the first cavity 110 It extends to the first sub-hole 123 through the first port 111, and the first cavity 110 is separated from the second cavity 120. The second cavity 120 communicates with the second sub-channel 124 through the fifth port 122.

导流管12沿其轴向贯穿第一腔110，导流管12的一部分位于第一腔110中，导流管12一端伸入第一子孔道123，另一端朝向板式换热器100的外部设置，导流管12通过其第一管部1201与配合件11之间配合固定连接，配合件11的第一腔110通过第一端口111与第一子孔道103连通，这样，导流管12的一部分位于第一腔110内，配合件11相当于套在导流管12的外部，相比沿板式换热器的长度方向设置接管的方式，有利于集成件的整体体积缩小，集成件整体都靠近第一子孔道123设置，第二端口112和第四端口121也集中靠近第一子孔道123设置，这样，板式换热器100在第二孔道104对应的位置上可以节省部分空间，有利于优化整个板式换热器100的安装空间，流体如制冷剂的进口和出口集成在一起，也有利于板式换热器100与其他组件的集成化安装，满足***紧凑性的需求，且对于配合件11而言，其结构简单，便于加工制造，且利于配合件11整体体积缩小。The draft tube 12 penetrates the first cavity 110 along its axial direction. A part of the draft tube 12 is located in the first cavity 110. One end of the draft tube 12 extends into the first sub-hole 123, and the other end faces the outside of the plate heat exchanger 100. Set, the draft tube 12 is fixedly connected to the mating part 11 through its first tube portion 1201, and the first cavity 110 of the mating part 11 communicates with the first sub-channel 103 through the first port 111, so that the draft tube 12 A part of the fitting part is located in the first cavity 110, and the fitting part 11 is equivalent to sleeve outside the flow guide tube 12. Compared with the way of arranging the connecting pipe along the length of the plate heat exchanger, it is beneficial to reduce the overall volume of the integrated part. They are all arranged close to the first sub-channel 123, and the second port 112 and the fourth port 121 are also concentratedly arranged close to the first sub-channel 123. In this way, the plate heat exchanger 100 can save some space at the position corresponding to the second channel 104. It is beneficial to optimize the installation space of the entire plate heat exchanger 100. The inlet and outlet of fluids such as refrigerant are integrated together. It is also conducive to the integrated installation of the plate heat exchanger 100 and other components, meeting the needs of system compactness, and for matching As far as the piece 11 is concerned, its structure is simple, which is convenient for processing and manufacturing, and facilitates the reduction of the overall volume of the matching piece 11.

第二管部1202位于第一孔道103的部分的外径L1小于第一孔道103的内径L2，第二管部1202与第一阻挡部13在连接处密封连接，使第一子孔道123与第二子孔道124相隔离。第一板片1011和第二板片1012可以为相同板片也可以为不同板片，在相同板片时，第一板片1011相对于第二板片1012旋转180°设置，第三板片1013相对于第一板片1011或者第二板片1012的第一孔口1位置处不进行冲孔设置，保留的部分板片结构可以构成第一阻挡部13，第一阻挡部13设置一小孔即为第二安装孔131，第二安装孔131的孔径与第二管部1202外径相匹配。当然，第一阻挡部13也可以为单独部件，第三板片1013也可以开设有第一孔口1，第一阻挡部13可以在第三板片1013对应第一孔口1的位置处通过焊接等方式与第三板片1013其他部分固定为一体。The outer diameter L1 of the portion of the second pipe portion 1202 located in the first hole 103 is smaller than the inner diameter L2 of the first hole 103, and the second pipe portion 1202 and the first blocking portion 13 are hermetically connected at the connection point, so that the first sub-hole 123 and the first hole The two sub-channels 124 are separated. The first plate 1011 and the second plate 1012 can be the same plate or different plates. When the same plate is used, the first plate 1011 is rotated 180° relative to the second plate 1012, and the third plate 1013 is not punched at the position of the first opening 1 of the first plate 1011 or the second plate 1012. The remaining part of the plate structure can constitute the first blocking portion 13, and the first blocking portion 13 is provided with a small The hole is the second mounting hole 131, and the diameter of the second mounting hole 131 matches the outer diameter of the second pipe 1202. Of course, the first blocking portion 13 can also be a separate component, and the third plate 1013 can also be provided with a first hole 1, and the first blocking portion 13 can pass through at the position of the third plate 1013 corresponding to the first hole 1. The other parts of the third plate 1013 are fixed as a whole by welding or the like.

第一阻挡部13与第一孔道103的轴向大致垂直。沿板片101层叠的方向，第一子板间通道1021相对靠近配合件11，第二子板间通道1022相对远离配合件11，第一子板间通道1021内流体流动方向与第二子板间通道1022内流体流动方向相反，流体在在第一子板间通道1021实现一个回程，在第二子板间通道1022实现另一个回程，这样，在板式换热器100体积较小的情况下，可以有效增长流体的流动路径，保证板式换热器较好的换热性能，同时，相比于整个板间通道，两回程的设置使得有利于流体的分配，特别针对气液两相的制冷剂而言，有利于改善制冷剂在板式换热器中气液分配不均的问题。The first blocking portion 13 is substantially perpendicular to the axial direction of the first hole 103. Along the stacking direction of the plates 101, the first inter-sub-board channel 1021 is relatively close to the mating member 11, the second inter-sub-board channel 1022 is relatively far away from the mating member 11, and the fluid flow direction in the first inter-sub-board channel 1021 is the same as that of the second sub-board. The flow direction of the fluid in the middle channel 1022 is opposite. The fluid realizes one return stroke in the first inter-sub-plate channel 1021, and another return stroke in the second inter-sub-plate channel 1022. In this way, in the case of a small plate heat exchanger 100 , Can effectively increase the flow path of the fluid and ensure the better heat transfer performance of the plate heat exchanger. At the same time, compared with the entire inter-plate channel, the two-return setting makes it beneficial to the distribution of fluid, especially for the gas-liquid two-phase refrigeration In terms of refrigerant, it helps to improve the uneven distribution of refrigerant in the plate heat exchanger.

相应的，第二管部1202的外径L1小于第一子孔道123的内径L2，在第一子孔道123，流体在第二腔120内的流动方向与第二腔120外的流动方向相反。Correspondingly, the outer diameter L1 of the second tube portion 1202 is smaller than the inner diameter L2 of the first sub-hole 123. In the first sub-hole 123, the flow direction of the fluid in the second cavity 120 is opposite to the flow direction outside the second cavity 120.

配合件11和导流管12可以为相互独立的部件，在装配时集成为一体，构成集成件，配合件11和导流管12的第一管部1201通过焊接等方式实现固定，二者不会发生相互位移，具体的，配合件11还具有与第一腔110连通的第一安装孔113，在第一安装孔113处，配合件11与导流管12的第一管部1201的外壁密封焊接使得第一腔110在第一安装孔113处与板式换热器100的外部隔离。或者集成件可以一体成型，如采用金属铸造工艺加工成型，或者集成件可采用注塑工艺一体成型等，这样，配合件11和导流管12本身即为一体连接的部件，二者可以固定连接。The mating piece 11 and the draft tube 12 may be independent components, and they are integrated into one body during assembly to form an integrated part. The mating part 11 and the first tube portion 1201 of the draft tube 12 are fixed by welding or other means. Mutual displacement occurs. Specifically, the mating member 11 also has a first mounting hole 113 communicating with the first cavity 110. At the first mounting hole 113, the mating member 11 and the outer wall of the first tube portion 1201 of the draft tube 12 The sealing welding makes the first cavity 110 isolated from the outside of the plate heat exchanger 100 at the first mounting hole 113. Or the integrated part can be integrally formed, such as being processed by a metal casting process, or the integrated part can be integrally formed by an injection molding process, etc., so that the mating part 11 and the draft tube 12 themselves are integrally connected parts, and the two can be fixedly connected.

当然，针对第二流道中流动的流体，例如作为载冷剂使用的乙二醇水溶液等，与第一流道类似，第二流道也可以通过类似的配合件11、导流管12以及第一阻挡部13等的结构位置关系在第二流道所对应的板间通道实现两个回程的流动方式；或者仍采用一个回程的流动方式，本发明对第二流道中流体的流动方式不做具体限制。Of course, for the fluid flowing in the second flow channel, such as the glycol aqueous solution used as a refrigerant, similar to the first flow channel, the second flow channel can also pass through the similar fitting 11, the flow guide tube 12 and the first flow channel. The structural positional relationship of the blocking portion 13 and the like realizes two return flow modes in the inter-plate channel corresponding to the second flow channel; or one return flow mode is still adopted, and the present invention does not make specific details about the flow mode of the fluid in the second flow channel. limit.

板式换热器100还包括第一边板21和第二边板22，第一边板21和第二边板22的厚度均大于板片101的厚度，多张板片101位于第一边板21和第二边板22之间。第一边板21可以包括焊接为一体的板主体和加强板，加强板位于板主体远离板片101的一侧。或者第一边板21采用厚度较厚的整块边板，第一边板21的厚度较厚能够提高第一边板21与配合件11的外壁之间的焊接强度，第一边板21和第二边板22与多张板片101之间通过焊接固定为一体，其中焊接可以是钎焊，从而有利于提高板式换热器100的强度和可靠性。第一边板21具有第一板孔211、第二板孔212和第三板孔213，第一板孔211、第二板孔212和第三板孔213均贯穿第一边板21，第一板孔211与第一子孔道123以及第二子孔道124同轴设置或者偏心设置，第二孔道104的两端通过第一边板21和第二边板22进行密封，即在第二孔道104内流动的流体不能通过第一边板21或者第二边板22直接与板式换热器100的外部连通，第二板孔212与第三孔道同轴设置或者偏心设置。第三板孔213与第四孔道同轴设置或者偏心设置The plate heat exchanger 100 further includes a first side plate 21 and a second side plate 22. The thicknesses of the first side plate 21 and the second side plate 22 are both greater than the thickness of the plate 101, and a plurality of plates 101 are located on the first side plate. Between 21 and the second side board 22. The first side plate 21 may include a plate main body and a reinforcing plate that are welded together, and the reinforcing plate is located on a side of the plate main body away from the plate 101. Or the first side plate 21 adopts a thicker whole side plate, and the thicker thickness of the first side plate 21 can improve the welding strength between the first side plate 21 and the outer wall of the mating part 11. The first side plate 21 and The second side plate 22 and the plurality of plates 101 are fixed as a whole by welding, wherein the welding may be brazing, which is beneficial to improve the strength and reliability of the plate heat exchanger 100. The first side plate 21 has a first plate hole 211, a second plate hole 212, and a third plate hole 213. The first plate hole 211, the second plate hole 212 and the third plate hole 213 all penetrate the first side plate 21. A plate hole 211 is arranged coaxially or eccentrically with the first sub-hole 123 and the second sub-hole 124, and both ends of the second hole 104 are sealed by the first side plate 21 and the second side plate 22, that is, in the second hole The fluid flowing in 104 cannot directly communicate with the outside of the plate heat exchanger 100 through the first side plate 21 or the second side plate 22, and the second plate hole 212 and the third channel are arranged coaxially or eccentrically. The third plate hole 213 is arranged coaxially or eccentrically with the fourth hole

板式换热器100还包括第一外接管23和第二外接管24，第一外接管23通过第二板孔212与第二流道连通，第二外接管24通过第三板孔213与第二流道连通。第一边板21上开设了三个板孔，一个板孔用于对接集成件，另外两个板孔分别用于对接第一外接管23和第二外接管24。第一外接管23和第二外接管24位于板式换热器100宽度方向的一侧。或者第一外接管23和第二外接管24呈对角设置，可参考图4所示，这样流体如制冷剂在第一流道两个回程的基础上，又采用斜角对流的方式来优化分配的作用，可以达到充分换热的效果，图4以制冷剂从第四端口121流入板式换热器，从第二端口112流出板式换热器示意，当然制冷剂也可以从第二端口112流入板式换热器，并从第四端口121流出板式换热器。第一外接管23、第二外接管24，以及集成为整体组件的配合件11与导流管12，可以位于板式换热器100的同一侧设置，也可以基于板式换热器100的安装需要位于不同侧，例如，第一外接管23和第二外接管24位于板式换热器100的一侧，集成为整体组件的配合件11与导流管12位于板式换热器100相对的另一侧。The plate heat exchanger 100 further includes a first external pipe 23 and a second external pipe 24. The first external pipe 23 communicates with the second flow channel through the second plate hole 212, and the second external pipe 24 communicates with the second channel through the third plate hole 213. The two runners are connected. Three plate holes are defined on the first side plate 21, one plate hole is used to connect the integrated component, and the other two plate holes are used to connect the first external tube 23 and the second external tube 24 respectively. The first external pipe 23 and the second external pipe 24 are located on one side in the width direction of the plate heat exchanger 100. Or the first external pipe 23 and the second external pipe 24 are arranged diagonally, as shown in Figure 4, so that the fluid, such as refrigerant, on the basis of the two return strokes of the first flow channel, uses the oblique convection method to optimize the distribution The effect of, can achieve the effect of sufficient heat exchange. Figure 4 shows that the refrigerant flows into the plate heat exchanger from the fourth port 121 and flows out of the plate heat exchanger from the second port 112. Of course, the refrigerant can also flow into the plate heat exchanger from the second port 112. Plate heat exchanger, and flow out of the plate heat exchanger from the fourth port 121. The first external pipe 23, the second external pipe 24, and the fitting 11 and the guide pipe 12 integrated as an integral component can be located on the same side of the plate heat exchanger 100, or based on the installation requirements of the plate heat exchanger 100 Located on different sides, for example, the first external pipe 23 and the second external pipe 24 are located on one side of the plate heat exchanger 100, and the mating piece 11 and the flow guide tube 12 integrated as an integral assembly are located on the other side of the plate heat exchanger 100. side.

参考图5所示，第一阻挡部13设有第二安装孔131和翻边部125，翻边部125位于第二安装孔131的***。翻边部125自第一阻挡部13沿第二安装孔131的边缘朝向远离第一子孔道123的方向翘起，导流管12的第二管部1202穿过第二安装孔131伸入第二子孔道124，翻边部125与第二管部1202的外壁周向密封固定。具体的，在制造加工时，将导流管12压入第二安装孔131，可采用胀管工艺使得导流管12直径胀大，消除或减少了导流管12和翻边部125之间的缝隙，提高密封性，或者不采用胀管工艺，可以直接在翻边部125和第二管部1202的外壁填充焊料条进行密封焊接。Referring to FIG. 5, the first blocking portion 13 is provided with a second mounting hole 131 and a flanged portion 125, and the flanged portion 125 is located at the periphery of the second mounting hole 131. The flanging portion 125 is tilted from the first blocking portion 13 along the edge of the second mounting hole 131 toward the direction away from the first sub-hole 123, and the second tube portion 1202 of the guide tube 12 extends through the second mounting hole 131 into the The two sub-channels 124, the flange portion 125 and the outer wall of the second tube portion 1202 are sealed and fixed in the circumferential direction. Specifically, during manufacturing and processing, the guide tube 12 is pressed into the second mounting hole 131, and the tube expansion process can be used to expand the diameter of the guide tube 12, eliminating or reducing the gap between the guide tube 12 and the flange 125. To improve the sealing performance, or without using the tube expansion process, solder strips can be directly filled in the outer wall of the flanging portion 125 and the second tube portion 1202 for sealing welding.

参考图6所示的配合件11的结构示意，配合件11包括第一本体115以及与第一本体115连接并沿板片101层叠方向延伸的凸起部116，凸起部116包括相连接的第一凸台1161和第二凸台1162，第一凸台1161比第二凸台1162靠近第一子孔道123，第一端口111设于第一凸台1161远离第一本体115的端部，以图6示意的视图方向而言，第一端口111位于凸起部116的底侧。凸起部116具有第一缺口117，在垂直于板片101层叠方向，图6以带双箭头的实线示意，该方向大致为水平方向，第一缺口117与第一凸台1161相邻，且第一缺口117比第一凸台1161远离导流管12，也即第一凸台1161的外径小于第二凸台1162的外径，使得凸起部116的外壁呈台阶设置。在第一板孔211处，第一边板21与第一凸台1161的外侧壁周向焊接实现密封固定，第一本体115通过第二凸台1162与第一边板21相间隔，在一些实施方式中，第一边板21可以包括焊接为一体的板主体和加强板，加强板位于板主体远离板片101的一侧。第二凸台1162与加强板的顶面焊接固定，所述第一凸台1161的外侧壁在第一板孔211处与加强板焊接的内侧壁焊接固定。这样，板式换热器100的换热芯体部分与配合件11之间可以通过凸起部116和第一边板21实现固定，而第一本体115与第一边板21之间并不直接接触，有利于减少第一本体115给板式换热器100的换热芯体部分的压力，进而有利于减少配合件11对板式换热器100内流体在板间通道内流动阻力的影响，能够提高板式换热器100的换热效果。参考图7所示，针对配合件11而言，配合件11可以为一体成型的部件，第一本体115包括第一顶壁1151、第一底壁(未图示)和第一侧壁1152，第一边板包括板面210，板面210大致为平面，板面210为第一边板远离板片的端面，第一顶壁1151和第一底壁为与第一边板21的板面210平行或者大致平行的一组相对的端面，也即第一顶壁1151和第一底壁均沿垂直于板片101层叠方向延伸，第一顶壁1151比第一底壁远离板片101。在图7中，第一顶壁1151位于配合件11上侧，第一底壁与第一边板21的板面210之间存在间隙，第一侧壁1152连接于第一顶壁1151和第一底壁之间，第一侧壁1152可以如图7中示意与第一边板21垂直或者大致垂直，第一侧壁1152也可以倾斜设置，配合件11的第一顶壁1151可以大致为矩形，相应的，第一侧壁也对应为矩形，或者第一顶壁1151大致为椭圆形或者类椭圆形，第一侧壁相应的为弧形，配合件11的具体形状本申请并不做具体限制。第一安装孔113设于第一顶壁1151，第一安装孔113与第一端口111同轴设置或者偏心设置，第二端口112设于第一侧壁1152，从而第一端口111的轴向与第二端口112的轴向相垂直。由于导流管12需要在第一安装孔113处与配合件11实现密封连接，那相应的，第四端口121靠近第一顶壁1151，这样，第四端口121与第二端口112朝向不同的方向设置，方便加工和制造，配合件11的体积也可以进一步缩小，且第四端口121与第二端口112朝向不同方向设置，使得端口与管道连接时可以减少相互干涉，有利于优化板式换热器100的安装空间。With reference to the schematic structure of the mating member 11 shown in FIG. 6, the mating member 11 includes a first body 115 and a protrusion 116 connected to the first body 115 and extending along the stacking direction of the plate 101. The protrusion 116 includes a connected The first boss 1161 and the second boss 1162, the first boss 1161 is closer to the first sub-channel 123 than the second boss 1162, and the first port 111 is provided at the end of the first boss 1161 away from the first body 115, In terms of the view direction shown in FIG. 6, the first port 111 is located on the bottom side of the protrusion 116. The protruding portion 116 has a first notch 117, which is perpendicular to the stacking direction of the plates 101. FIG. 6 is indicated by a solid line with a double arrow. The direction is roughly horizontal. The first notch 117 is adjacent to the first boss 1161. And the first notch 117 is farther away from the guide tube 12 than the first boss 1161, that is, the outer diameter of the first boss 1161 is smaller than the outer diameter of the second boss 1162, so that the outer wall of the boss 116 is arranged in steps. At the first plate hole 211, the first side plate 21 is circumferentially welded to the outer side wall of the first boss 1161 to achieve sealing and fixation. The first body 115 is spaced from the first side plate 21 by the second boss 1162. In an embodiment, the first side plate 21 may include a plate main body and a reinforcing plate that are welded together, and the reinforcing plate is located on the side of the plate main body away from the plate 101. The second boss 1162 is welded to the top surface of the reinforcing plate, and the outer side wall of the first boss 1161 is welded to the inner side wall of the reinforcing plate at the first plate hole 211. In this way, the heat exchange core part of the plate heat exchanger 100 and the mating member 11 can be fixed by the protrusion 116 and the first side plate 21, while the first body 115 and the first side plate 21 are not directly fixed. The contact is beneficial to reduce the pressure of the first body 115 on the heat exchange core part of the plate heat exchanger 100, thereby helping to reduce the influence of the fitting 11 on the flow resistance of the fluid in the plate heat exchanger 100 in the channel between the plates. Improve the heat exchange effect of the plate heat exchanger 100. Referring to FIG. 7, for the fitting piece 11, the fitting piece 11 may be an integrally formed part. The first body 115 includes a first top wall 1151, a first bottom wall (not shown), and a first side wall 1152, The first side board includes a board surface 210, the board surface 210 is substantially flat, the board surface 210 is the end surface of the first side board away from the board, the first top wall 1151 and the first bottom wall are the board surfaces of the first side board 21 A set of opposite end faces 210 parallel or substantially parallel, that is, the first top wall 1151 and the first bottom wall extend along the direction perpendicular to the stacking direction of the plate 101, and the first top wall 1151 is farther from the plate 101 than the first bottom wall. In FIG. 7, the first top wall 1151 is located on the upper side of the fitting 11, there is a gap between the first bottom wall and the surface 210 of the first side plate 21, and the first side wall 1152 is connected to the first top wall 1151 and the second Between a bottom wall, the first side wall 1152 can be perpendicular or substantially perpendicular to the first side plate 21 as shown in FIG. 7, and the first side wall 1152 can also be arranged obliquely. The first top wall 1151 of the fitting 11 can be roughly Rectangular. Correspondingly, the first side wall is also rectangular, or the first top wall 1151 is roughly elliptical or elliptical, and the first side wall is correspondingly curved. The specific shape of the fitting 11 is not discussed in this application. Specific restrictions. The first mounting hole 113 is provided on the first top wall 1151, the first mounting hole 113 is arranged coaxially or eccentrically with the first port 111, and the second port 112 is provided on the first side wall 1152, so that the axial direction of the first port 111 It is perpendicular to the axial direction of the second port 112. Since the flow guiding tube 12 needs to be connected to the mating member 11 in a sealed connection at the first mounting hole 113, correspondingly, the fourth port 121 is close to the first top wall 1151, so that the fourth port 121 and the second port 112 face different directions. The direction setting is convenient for processing and manufacturing. The volume of the fitting 11 can be further reduced, and the fourth port 121 and the second port 112 are arranged in different directions, so that the mutual interference can be reduced when the ports are connected with the pipes, which is beneficial to optimize the plate heat transfer The installation space of the device 100.

与图7所示意的结构类似，参考图8所示，第二端口112与第一安装孔113同样也设于第一顶壁1151，第一腔110包括相连通的第一子腔1101和第二子腔1102，第一子腔1101通过第一端口111与第一子孔道123连通，且第二子腔1102自第二端口112向第一子腔1101倾斜的延伸。矩形结构的配合件11相对较好加工，第一子腔1101和第二子腔1102可通过机加工等工艺方式制造，即第一子腔1101和第二子腔1102可以具有相对呈直线的通道中心线，方便加工制造，且第二子腔1102自第二端口112相对倾斜的向第一子腔1101延伸，流体在第二子腔1102中流体流动顺畅，流动路径较短，有利于减少流动阻力，提高换热性能。Similar to the structure shown in FIG. 7, referring to FIG. 8, the second port 112 and the first mounting hole 113 are also provided on the first top wall 1151. The first cavity 110 includes a first subcavity 1101 and a Two sub-cavities 1102, the first sub-cavity 1101 communicates with the first sub-channel 123 through the first port 111, and the second sub-cavity 1102 extends obliquely from the second port 112 to the first sub-cavity 1101. The mating part 11 with a rectangular structure is relatively well processed. The first subcavity 1101 and the second subcavity 1102 can be manufactured by machining and other processes, that is, the first subcavity 1101 and the second subcavity 1102 can have relatively straight passages. The center line is convenient for processing and manufacturing, and the second sub-cavity 1102 extends from the second port 112 to the first sub-cavity 1101 relatively obliquely. The fluid flows smoothly in the second sub-cavity 1102 and the flow path is short, which is beneficial to reduce the flow Resistance to improve heat transfer performance.

当然，配合件11也可以通过零部件拼接成型，参考图9、图10、图11所示，第一本体115包括冲压成型或者机加工等方式制造的上壳体33和下壳体44，上壳体33和下壳体44相固定，上壳体33包括沿垂直于板片层叠方向延伸的第一子部331和自第一子部331的边缘沿板片层叠方向延伸的第二子部332，第一安装孔113和第二端口112均设于第一子部331。这样方便针对上壳体进行机加工。Of course, the mating member 11 can also be formed by splicing parts. With reference to Figures 9, 10, and 11, the first body 115 includes an upper shell 33 and a lower shell 44 manufactured by stamping or machining. The housing 33 and the lower housing 44 are fixed. The upper housing 33 includes a first sub-part 331 extending perpendicular to the plate stacking direction and a second sub-part extending from the edge of the first sub-part 331 in the plate stacking direction 332. The first mounting hole 113 and the second port 112 are both provided in the first sub-portion 331. This facilitates machining of the upper shell.

下壳体44包括凸起部116以及与凸起部116一体连接的第三子部441，第三子部441比凸起部116远离板片101，第三子部441开设有相连通的第一凹槽443和第一通道442，第一通道442与第一端口111连通，第一凹槽443沿垂直于板片层叠方向延伸，第一通道442和第一安装孔113同轴设置或者偏心设置。在垂直于,板片的层叠方向的平面上，第一凹槽443的投影与第二端口112的投影至少部分重合。上壳体33和下壳体44通过第二子部332和第三子部441之间相对的侧面焊接固定。在上壳体33和下壳体44拼接时，第一凹槽443连通第二端口112与第一通道442，流体进入第二端口112后，可经第一凹槽443流入第一通道442，再通过第一端口111进入第一子孔道123其中，上壳体33和下壳体44通过第二子部332和第三子部441之间相对的侧面焊接固定，上壳体33和下壳体44焊接为一整体件。The lower housing 44 includes a raised portion 116 and a third sub-portion 441 integrally connected with the raised portion 116. The third sub-portion 441 is farther away from the plate 101 than the raised portion 116. The third sub-portion 441 is provided with a communicating first A groove 443 and a first channel 442, the first channel 442 is in communication with the first port 111, the first groove 443 extends in the direction perpendicular to the plate stacking direction, the first channel 442 and the first mounting hole 113 are arranged coaxially or eccentrically Set up. On a plane perpendicular to the stacking direction of the plates, the projection of the first groove 443 and the projection of the second port 112 at least partially overlap. The upper housing 33 and the lower housing 44 are fixed by welding on the opposite side surfaces between the second sub-part 332 and the third sub-part 441. When the upper housing 33 and the lower housing 44 are spliced, the first groove 443 communicates with the second port 112 and the first channel 442. After the fluid enters the second port 112, it can flow into the first channel 442 through the first groove 443. Then enter the first sub-hole 123 through the first port 111, the upper shell 33 and the lower shell 44 are welded and fixed by the opposite sides between the second sub-part 332 and the third sub-part 441, the upper shell 33 and the lower shell The body 44 is welded as an integral piece.

参考图9所示的导流管12与配合件11安装结构示意，导流管12的第一管部1201包括第二本体127以及自第二本体127向垂直于板片层叠方向延伸的第三凸台129，沿板片101层叠方向，所述第四端口121位于第一管部1201远离换热芯体的端部。第三凸台129的外径L3大于第一安装孔113的内径L4，第三凸台129位于配合件11远离第一腔110的外侧，第三凸台129与配合件11焊接固定，第二本体127的至少部分位于第一安装孔113。且在第一安装孔113处，第一本体115与第二本体127的外壁周向焊接实现密封固定。第二本体127与第一安装孔113的内径相匹配，方便配合件11在第一安装孔113处与导流管12之间进行焊接。第一管部1201的第二本体127以及第二管部1202均呈圆筒状，且第一管部1201的第二本体127的外径(第一安装孔113的内径L4)大于第二管部1202的外径L1。并且可以提高密封的可靠性，第三凸台129相比第二本体127凸出于第一本体115，在与节流部件如电子膨胀阀安装时，电子膨胀阀可套设于第三凸台129的外周，通过机械连接等方式实现与电子膨胀阀直接安装。Referring to the installation structure of the guide tube 12 and the fitting 11 shown in FIG. 9, the first tube portion 1201 of the guide tube 12 includes a second body 127 and a third body 127 extending from the second body 127 perpendicular to the stacking direction of the plates. The boss 129 is along the stacking direction of the plates 101, and the fourth port 121 is located at the end of the first tube 1201 away from the heat exchange core. The outer diameter L3 of the third boss 129 is greater than the inner diameter L4 of the first mounting hole 113. The third boss 129 is located on the outside of the mating part 11 away from the first cavity 110. The third boss 129 is fixed to the mating part 11 by welding. At least part of the body 127 is located in the first mounting hole 113. And at the first mounting hole 113, the outer walls of the first body 115 and the second body 127 are circumferentially welded to achieve a sealed fixation. The inner diameter of the second body 127 is matched with the inner diameter of the first mounting hole 113 to facilitate the welding of the matching piece 11 between the first mounting hole 113 and the guide tube 12. The second body 127 of the first pipe portion 1201 and the second pipe portion 1202 are both cylindrical, and the outer diameter of the second body 127 of the first pipe portion 1201 (the inner diameter L4 of the first mounting hole 113) is larger than that of the second pipe The outer diameter L1 of the portion 1202. In addition, the reliability of the seal can be improved. Compared with the second body 127, the third boss 129 protrudes from the first body 115. When installed with a throttling component such as an electronic expansion valve, the electronic expansion valve can be sleeved on the third boss The outer periphery of 129 can be directly installed with the electronic expansion valve through mechanical connection.

基于前述描述的板式换热器100的结构，在一种实施方式中，参考图12，板式换热器100作为蒸发器使用，相应的，第一流道用于制冷剂的流通，第二流道用于载冷剂的流通，第四端口121作为制冷剂的进口，第二端口112作为制冷剂的出口，第一子板间通道1021 的通道数量大于第二子板间通道1022的通道数量，在板式换热器100的板片结构构成的通道尺寸和结构基本相似时，可参考图12所示即沿板片101的层叠方向，第一子板间通道1021形成的换热段的高度H1大于第二子板间通道1022形成的换热段的高度H2。Based on the structure of the plate heat exchanger 100 described above, in one embodiment, referring to FIG. 12, the plate heat exchanger 100 is used as an evaporator. Correspondingly, the first flow path is used for the circulation of refrigerant, and the second flow path For the circulation of the refrigerant, the fourth port 121 is used as the refrigerant inlet and the second port 112 is used as the refrigerant outlet. The number of channels 1021 between the first sub-plates is greater than the number of channels 1022 between the second sub-plates, When the size and structure of the channel formed by the plate structure of the plate heat exchanger 100 are basically similar, refer to the height H1 of the heat exchange section formed by the first inter-plate channel 1021 along the stacking direction of the plates 101 as shown in FIG. 12 It is greater than the height H2 of the heat exchange section formed by the passage 1022 between the second sub-plates.

板式换热器100作为蒸发器使用时，气液两相的制冷剂从第四端口121进入第二腔120，进而从第五端口122流出第二腔120并进入第二子孔道124，再经第二子板间通道1022，进入第二孔道104，再经第一子板间通道1021进入第一子孔道123，再经第一端口111进入第一腔110，并最终以气相或者气液两相的状态从第二端口112流出板式换热器100，制冷剂在第一子板间通道1021形成的换热段的流动方向为自第二孔道104指向第一子孔道123的方向，制冷剂在第二子板间通道1022形成的换热段的流动方向为自第一子孔道123指向第二孔道104的方向。两个回程的流路设计使得制冷剂的流动路径增长，在第一流道内流动的气液两相的制冷剂，与第二流道内流动的载冷剂进行热交换，由于气液两相的制冷剂在第一流道内换热时，气态制冷剂的比重逐渐增大，第一子板间通道1021的通道数量大于第二子板间通道1022的通道数量，一方面，第二子板间通道1022形成的换热段的通道数量较少，更有利于解决制冷剂在各通道分配不均匀的问题。另一方面，第一子板间通道1021占总的板间通道的比例较大，因而不会有较大的压降损失，有利于气态比重增大的制冷剂快速流出板式换热器100，提高制冷剂的换热系数，最终提高板式换热器100的换热效果。When the plate heat exchanger 100 is used as an evaporator, the gas-liquid two-phase refrigerant enters the second cavity 120 from the fourth port 121, and then flows out of the second cavity 120 from the fifth port 122 and enters the second sub-channel 124, and then passes through The second inter-sub-plate channel 1022 enters the second channel 104, and then enters the first sub-channel 123 via the first inter-sub-plate channel 1021, and then enters the first cavity 110 via the first port 111, and finally enters the gas or liquid The state of phase flows out of the plate heat exchanger 100 from the second port 112. The flow direction of the refrigerant in the heat exchange section formed by the channel 1021 between the first sub-plates is from the second channel 104 to the first sub-channel 123. The flow direction of the heat exchange section formed in the channel 1022 between the second sub-plates is from the first sub-channel 123 to the second channel 104. The design of the two return flow paths makes the flow path of the refrigerant increase. The gas-liquid two-phase refrigerant flowing in the first flow path exchanges heat with the refrigerant flowing in the second flow path. Due to the gas-liquid two-phase cooling When the refrigerant exchanges heat in the first flow channel, the specific gravity of the gaseous refrigerant gradually increases. The number of channels 1021 between the first sub-plates is greater than the number of channels 1022 between the second sub-plates. On the one hand, the channels 1022 between the second sub-plates The formed heat exchange section has fewer channels, which is more conducive to solving the problem of uneven distribution of refrigerant in each channel. On the other hand, the first inter-plate passages 1021 account for a large proportion of the total inter-plate passages, so there will be no large pressure drop loss, which is conducive to the rapid flow of the refrigerant with increased gas specific gravity out of the plate heat exchanger 100. The heat exchange coefficient of the refrigerant is improved, and finally the heat exchange effect of the plate heat exchanger 100 is improved.

在另一实施方式中，参考图13所示，板式换热器100作为蒸发器使用，相应的，所述第一流道用于制冷剂的流通，第二流道用于载冷剂的流通，第二端口112作为制冷剂的进口，第四端口121作为制冷剂的出口，第一子板间通道1021的通道数量小于第二子板间通道1022的通道数量，在板式换热器100的板片结构构成的通道尺寸和结构基本相似时，可参考图13所示即沿板片101的层叠方向，第一子板间通道1021形成的换热段的高度H1小于第二子板间通道1022形成的换热段的高度H2。In another embodiment, referring to FIG. 13, the plate heat exchanger 100 is used as an evaporator. Accordingly, the first flow path is used for the circulation of refrigerant, and the second flow path is used for the circulation of refrigerant. The second port 112 is used as the refrigerant inlet, and the fourth port 121 is used as the refrigerant outlet. The number of channels of the first inter-sub-plate passage 1021 is smaller than that of the second inter-sub-plate passage 1022. In the plate heat exchanger 100 When the size and structure of the channels formed by the sheet structures are basically similar, refer to Figure 13 that is along the stacking direction of the sheets 101, the height H1 of the heat exchange section formed by the first inter-sub-board passage 1021 is smaller than the second inter-sub-board passage 1022 The height of the formed heat exchange section H2.

板式换热器100作为蒸发器使用时，气液两相的制冷剂从第二端口112进入第一腔110，进而从第一端口111流出第一腔110并进入第一子孔道123，再经第一子板间通道1021，进入第二孔道104，再经第二子板间通道1022进入第二子孔道124，再经第五端口122进入第二腔120，并最终以气相或者气液两相的状态从第四端口121流出板式换热器100，制冷剂在第一子板间通道1021形成的换热段的流动方向为自第一子孔道123指向第二孔道104的方向，制冷剂在第二子板间通道1022形成的换热段的流动方向为自第二孔道104指向第一子孔道123的方向。两个回程的流路设计使得制冷剂的流动路径增长，在第一流道内流动的气液两相的制冷剂，与第二流道内流动的载冷剂进行热交换，由于气液两相的制冷剂在第一流道内换热时，气态制冷剂的比重逐渐增大，第二子板间通道1022的通道数量大于第一子板间通道1021的通道数量，一方面，第一子板间通道1021形成的换热段的通道数量较少，更有利于解决制冷剂在各通道分配不均匀的问题。另一方面，第二子板间通道1022占总的板间通道的比例较大，因而不会有较大的压降损失，有利于气态比重增大的制冷剂快速流出板式换热器100，提高制冷剂的换热系数，最终提高板式换热器100的换热效果。When the plate heat exchanger 100 is used as an evaporator, the gas-liquid two-phase refrigerant enters the first cavity 110 from the second port 112, and then flows out of the first cavity 110 from the first port 111 and enters the first sub-channel 123, and then passes through The first inter-sub-plate channel 1021 enters the second channel 104, and then enters the second sub-channel 124 via the second inter-sub-plate channel 1022, and then enters the second cavity 120 via the fifth port 122, and finally enters the gas or liquid phase. The state of the phase flows out of the plate heat exchanger 100 from the fourth port 121. The flow direction of the refrigerant in the heat exchange section formed by the first inter-sub-plate passage 1021 is from the first sub-channel 123 to the second channel 104, and the refrigerant The flow direction of the heat exchange section formed by the channel 1022 between the second sub-plates is from the second channel 104 to the first sub-channel 123. The design of the two return flow paths makes the flow path of the refrigerant increase. The gas-liquid two-phase refrigerant flowing in the first flow path exchanges heat with the refrigerant flowing in the second flow path. Due to the gas-liquid two-phase cooling When the refrigerant exchanges heat in the first flow channel, the specific gravity of the gaseous refrigerant gradually increases. The number of channels 1022 between the second sub-plates is greater than the number of channels 1021 between the first sub-plates. On the one hand, the channels 1021 between the first sub-plates The formed heat exchange section has fewer channels, which is more conducive to solving the problem of uneven distribution of refrigerant in each channel. On the other hand, the second sub-plate passage 1022 accounts for a larger proportion of the total inter-plate passages, so there will be no large pressure drop loss, which is conducive to the rapid flow of the refrigerant with an increased gaseous specific gravity out of the plate heat exchanger 100. The heat exchange coefficient of the refrigerant is improved, and finally the heat exchange effect of the plate heat exchanger 100 is improved.

在又一实施方式中，参考图14所示，板式换热器100作为冷凝器使用，第一流道用于制冷剂的流通，第二流道用于载冷剂的流通，第四端口121作为制冷剂的进口，第二端口112作为制冷剂的出口，第一子板间通道1021的通道数量小于第二子板间通道1022的通道数量，在板式换热器100的板片结构构成的通道尺寸和结构基本相似时，可参考图14所示，沿板片101的层叠方向，第一子板间通道1021形成的换热段的高度H1小于第二子板间通道1022形成的换热段的高度H2。In another embodiment, referring to FIG. 14, the plate heat exchanger 100 is used as a condenser, the first flow path is used for the circulation of refrigerant, the second flow path is used for the circulation of the refrigerant, and the fourth port 121 is used as The inlet of the refrigerant, the second port 112 is used as the outlet of the refrigerant. The number of channels of the first inter-sub-plate passage 1021 is smaller than the number of the second inter-sub-plate passage 1022, which is formed by the plate structure of the plate heat exchanger 100 When the size and structure are basically similar, refer to Figure 14, along the stacking direction of the plates 101, the height H1 of the heat exchange section formed by the first inter-sub-plate passage 1021 is smaller than the heat exchange section formed by the second inter-sub-plate passage 1022 The height H2.

板式换热器100作为冷凝器使用时，气态的制冷剂从第四端口121进入第二腔120，进而从第五端口122流出第二腔120并进入第二子孔道124，再经第二子板间通道1022，进入第二孔道104，再经第一子板间通道1021进入第一子孔道124，再经第一端口111进入第一腔110，并可以以液态的状态从第二端口112流出板式换热器100，制冷剂在第一子板间通道1021形成的换热段的流动方向为自第二孔道104指向第一子孔道123的方向，制冷剂在第二子板间通道1022形成的换热段的流动方向为自第一子孔道123指向第二孔道104的方向。气态制冷剂从第四端口121进入，在第一流道内流动，与第二流道内流动的载冷剂换热冷凝为液态或者气液两态，两个回程的流路设计使得制冷剂的流动路径增长，且为了使制冷剂在尺寸较小的板式换热器100的出口即第二端口112仍具有较好的过冷度，第二子板间通道1022的通道数量大于第一子板间通道1021的通道数量，有助于制冷剂的流量分配以及达到较好的换热效果。When the plate heat exchanger 100 is used as a condenser, the gaseous refrigerant enters the second cavity 120 from the fourth port 121, and then flows out of the second cavity 120 from the fifth port 122 and enters the second sub-channel 124, and then passes through the second sub-channel 124. The inter-plate channel 1022 enters the second channel 104, and then enters the first sub-channel 124 through the first inter-sub-channel 1021, and then enters the first cavity 110 through the first port 111, and can enter the second port 112 in a liquid state. Out of the plate heat exchanger 100, the flow direction of the refrigerant in the heat exchange section formed by the first inter-sub-plate passage 1021 is from the second channel 104 to the first sub-channel 123, and the refrigerant flows in the second inter-sub-plate channel 1022 The flow direction of the formed heat exchange section is from the first sub-channel 123 to the second channel 104. The gaseous refrigerant enters from the fourth port 121, flows in the first flow channel, exchanges heat with the refrigerant flowing in the second flow channel and condenses into a liquid or gas-liquid state. The two return flow paths are designed to make the flow path of the refrigerant The number of channels between the second sub-plates 1022 is greater than that of the first sub-plates in order to ensure that the refrigerant still has a better degree of subcooling at the outlet of the smaller plate heat exchanger 100, that is, the second port 112. The number of channels of 1021 helps the flow distribution of refrigerant and achieves better heat exchange effect.

在再一实施方式中，参考图15所示，板式换热器100作为冷凝器使用，第一流道用于制冷剂的流通，第二流道用于载冷剂的流通，第二端口112作为制冷剂的进口，第四端口121作为制冷剂的出口，第一子板间通道1021的通道数量大于第二子板间通道1022的通道数量，在板式换热器100的板片结构构成的通道尺寸和结构基本相似时，可参考图14所示，沿板片101的层叠方向，第一子板间通道1021形成的换热段的高度H1大于第二板间通道1022形成的换热段的高度H2。In still another embodiment, referring to FIG. 15, the plate heat exchanger 100 is used as a condenser, the first flow path is used for the circulation of refrigerant, the second flow path is used for the circulation of refrigerant, and the second port 112 is used as The inlet of the refrigerant, the fourth port 121 is used as the outlet of the refrigerant. The number of channels of the first inter-sub-plate passage 1021 is greater than that of the second inter-sub-plate passage 1022, which is formed by the plate structure of the plate heat exchanger 100 When the size and structure are basically similar, refer to Figure 14, along the stacking direction of the plates 101, the height H1 of the heat exchange section formed by the first inter-plate passage 1021 is greater than that of the heat exchange section formed by the second inter-plate passage 1022 Height H2.

板式换热器100作为冷凝器使用时，单相气态的制冷剂从第二端口112进入第一腔110，进而从第一端口111流出第一腔110并进入第一子孔道123，再经第一子板间通道1021，进入第二孔道104，再经第二子板间通道1022进入第二子孔道124，再经第五端口122进入第二腔120，并最终以单相液态的状态从第四端口121流出板式换热器100，制冷剂在第一子板间通道1021形成的换热段的流动方向为自第一子孔道123指向第二孔道104的方向，制冷剂在第二子板间通道1022形成的换热段的流动方向为自第二孔道104指向第一子孔道123的方向。气态制冷剂从第二端口112进入，在第一流道内流动，与第二流道内流动的载冷剂换热冷凝为液态或者气液两态，两个回程的流路设计使得制冷剂的流动路径增长，且为了使制冷剂在尺寸较小的板式换热器100的出口即第二端口112仍具有较好的过冷度，第一子板间通道1021的通道数量大于第二子板间通道1022的通道数量，有助于制冷剂的流量分配以及达到较好的换热效果。When the plate heat exchanger 100 is used as a condenser, the single-phase gaseous refrigerant enters the first cavity 110 from the second port 112, then flows out of the first cavity 110 from the first port 111 and enters the first sub-channel 123, and then passes through the An inter-sub-board channel 1021 enters the second channel 104, and then enters the second sub-channel 124 via the second inter-sub-board channel 1022, and then enters the second cavity 120 via the fifth port 122, and finally exits from the single-phase liquid state. The fourth port 121 flows out of the plate heat exchanger 100. The flow direction of the refrigerant in the heat exchange section formed by the channel 1021 between the first sub-plates is from the first sub-channel 123 to the second channel 104, and the refrigerant flows in the second sub-channel 104. The flow direction of the heat exchange section formed by the inter-plate passage 1022 is from the second channel 104 to the first sub-channel 123. The gaseous refrigerant enters from the second port 112, flows in the first flow channel, exchanges heat with the refrigerant flowing in the second flow channel and condenses into a liquid or gas-liquid state. The two return flow paths are designed to make the flow path of the refrigerant In order to ensure that the refrigerant has a better degree of subcooling at the outlet of the smaller plate heat exchanger 100, that is, the second port 112, the number of channels 1021 between the first sub-plates is greater than that of the second sub-plates The number of channels of 1022 helps the flow distribution of refrigerant and achieves a better heat exchange effect.

以上对本发明所提供板式换热器进行了详细介绍。本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以对本发明进行若干改进和修饰，这些改进和修饰也落入本发明权利要求的保护范围内。The plate heat exchanger provided by the present invention has been described in detail above. Specific examples are used in this article to illustrate the principle and implementation of the present invention. The description of the above examples is only used to help understand the core idea of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

一种板式换热器，包括换热芯体和位于所述换热芯体厚度方向一侧的集成件；所述换热芯体包括多张层叠设置的板片，所述多张板片包括多张第一板片、多张第二板片和一张第三板片；多张板片层叠形成不相通的第一流道和第二流道；第一板片和第二板片均包括第一孔口、第二孔口、第三孔口和第四孔口；第三板片包括第二孔口、第三孔口和第四孔口；其中，各所述第一板片的第一孔口和各所述第二板片的第一孔口至少部分区域相对形成第一孔道；各所述第一板片的第二、三、四孔口，各所述第二板片的第二、三、四孔口以及第三板片的第二、三、四孔口分别至少部分区域相对形成第二孔道、第三孔道和第四孔道；所述第一孔道和第二孔道为第一流道的一部分，所述第三孔道和所述第四孔道为第二流道的一部分；所述第三板片包括第一阻挡部；所述第一阻挡部至少部分位于所述第一孔道，所述第一孔道包括位于第一阻挡部两侧的第一子孔道和第二子孔道，第一子孔道比第二子孔道靠近集成件；所述第一流道还包括第一子板间通道和第二子板间通道，所述第一子板间通道和所述第二子板间通道通过所述第三板片分隔，所述第一子板间通道连通所述第一子孔道和所述第二孔道，所述第二子板间通道连通所述第二子孔道和所述第二孔道；A plate heat exchanger includes a heat exchange core and an integrated part located on one side of the heat exchange core in the thickness direction; the heat exchange core includes a plurality of stacked plates, the plurality of plates including Multiple first plates, multiple second plates, and one third plate; multiple plates are stacked to form a first flow channel and a second flow channel that are not connected; both the first plate and the second plate include The first orifice, the second orifice, the third orifice, and the fourth orifice; the third plate includes the second orifice, the third orifice, and the fourth orifice; wherein, each of the first plate At least part of the first orifice and the first orifice of each of the second plates form a first channel; the second, third, and fourth orifices of each of the first plates, each of the second plates The second, third, and fourth orifices of the third plate and the second, third, and fourth orifices of the third plate respectively at least partially form a second, third, and fourth channel; the first and second channels Is a part of the first flow channel, the third channel and the fourth channel are part of the second flow channel; the third plate includes a first blocking portion; the first blocking portion is at least partially located in the first A channel, the first channel includes a first sub-channel and a second sub-channel located on both sides of the first blocking portion, the first sub-channel is closer to the integrated component than the second sub-channel; the first channel also includes a first sub-channel The inter-board passage and the second inter-sub-board passage, the first inter-sub-board passage and the second inter-sub-board passage are separated by the third plate, and the first inter-sub-board passage communicates with the first A sub-channel and the second channel, and the channel between the second sub-plates communicates the second sub-channel and the second channel;

所述集成件包括配合件和导流管，所述配合件具有第一腔，所述配合件还开设有与所述第一腔连通的第一端口和第二端口，所述第一端口连通所述第一腔与所述第一子孔道，所述第二端口用于对接外部元件；The integrated piece includes a fitting piece and a draft tube, the fitting piece has a first cavity, the fitting piece is also provided with a first port and a second port communicating with the first cavity, the first port communicating The first cavity and the first sub-channel, and the second port is used to connect external components;

所述导流管具有第二腔，所述导流管还开设有与所述第二腔连通的第四端口和第五端口；所述导流管包括与所述配合件固定连接的第一管部、以及自第一管部经第一腔并从第一端口伸入第一孔道的第二管部；所述第四端口设于所述第一管部；所述第四端口用于对接外部元件；所述第一阻挡部与所述第二管部固定连接且于连接处密封，以使得所述第二子孔道与所述第一子孔道相隔断，所述第五端口设于所述第二管部，所述第五端口连通所述第二腔与所述第二子孔道。The draft tube has a second cavity, and the draft tube is also provided with a fourth port and a fifth port communicating with the second cavity; the draft tube includes a first fixed connection with the fitting piece. The tube portion, and the second tube portion extending from the first tube portion through the first cavity and from the first port into the first channel; the fourth port is provided in the first tube portion; the fourth port is used for Butt the external components; the first blocking portion and the second pipe portion are fixedly connected and sealed at the connection, so that the second sub-channel is separated from the first sub-channel, and the fifth port is provided at In the second tube portion, the fifth port communicates with the second cavity and the second sub-channel.
根据权利要求1所述的板式换热器，其特征在于，所述换热芯体还包括第一边板和第二边板，所述多张板片位于所述第一边板和所述第二边板之间；所述第一边板设有第一板孔、第二板孔和第三板孔，所述第一板孔与所述第一孔道同轴设置或者偏心设置，所述第二孔道的两端通过所述第一边板和所述第二边板密封，所述第二板孔和所述第三板孔分别与所述另外两个孔道同轴设置或者偏心设置，所述集成件与所述第一边板固定连接。The plate heat exchanger according to claim 1, wherein the heat exchange core body further comprises a first side plate and a second side plate, and the plurality of plates are located between the first side plate and the Between the second side plates; the first side plate is provided with a first plate hole, a second plate hole and a third plate hole, the first plate hole and the first hole are arranged coaxially or eccentrically, so Both ends of the second hole are sealed by the first side plate and the second side plate, and the second plate hole and the third plate hole are arranged coaxially or eccentrically with the other two holes respectively , The integrated part is fixedly connected with the first side plate.
根据权利要求2所述的板式换热器，其特征在于，所述配合件包括第一本体以及自所述第一本体沿所述板片层叠方向延伸的凸起部，所述凸起部包括第一凸台和第二凸台，所述第一凸台比所述第二凸台靠近所述第一子孔道，所述第一端口设于所述第一凸台远离所述第一本体的端部，所述第一凸台外径小于所述第二凸台的外径，从而所述凸起部呈台阶设置；在所述第一板孔处，所述第一边板与所述第一凸台的外侧壁周向焊接实现密封固定，且所述第一本体通过所述第二凸台与所述第一边板相间隔。The plate heat exchanger according to claim 2, wherein the matching member includes a first body and a protrusion extending from the first body along the plate stacking direction, and the protrusion includes A first boss and a second boss, the first boss is closer to the first sub-channel than the second boss, and the first port is provided on the first boss away from the first body The outer diameter of the first boss is smaller than the outer diameter of the second boss, so that the boss is arranged in steps; at the first plate hole, the first side plate and the The outer side wall of the first boss is welded circumferentially to achieve sealing and fixation, and the first body is spaced from the first side plate by the second boss.
根据权利要求3所述的板式换热器，其特征在于，所述配合件还设有与所述第一腔连通的第一安装孔；在所述第一安装孔处，所述配合件与所述第一管部的外管壁密封焊接。The plate heat exchanger according to claim 3, wherein the matching piece is further provided with a first mounting hole communicating with the first cavity; at the first mounting hole, the matching piece and The outer tube wall of the first tube part is hermetically welded.
根据权利要求4所述的板式换热器，其特征在于，所述第一管部包括第二本体和自所述第二本体向垂直于板片层叠方向延伸的第三凸台；所述第三凸台的外径大于所述第一安装孔的内径；所述第三凸台位于所述配合件远离所述第一腔的外侧，所述第三凸台与所述配合件焊接固定；所述第二本体的至少部分位于所述第一安装孔；且在所述第一安装孔处，所述第一本体与所述第二本体的外壁周向焊接实现密封固定。The plate heat exchanger according to claim 4, wherein the first tube portion includes a second body and a third boss extending from the second body in a direction perpendicular to the stacking direction of the plates; The outer diameter of the three bosses is greater than the inner diameter of the first mounting hole; the third boss is located on the outer side of the mating part away from the first cavity, and the third boss is fixed to the mating part by welding; At least a part of the second body is located in the first mounting hole; and at the first mounting hole, the first body and the outer wall of the second body are circumferentially welded to achieve sealing and fixing.
根据权利要求5所述的板式换热器，其特征在于，所述第一管部的第二本体以及所述第二管部均呈圆筒状，且所述第一管部的第二本体的外径大于所述第二管部的外径。The plate heat exchanger according to claim 5, wherein the second body of the first tube part and the second tube part are both cylindrical, and the second body of the first tube part The outer diameter of is greater than the outer diameter of the second tube portion.
根据权利要求4所述的板式换热器，其特征在于，所述配合件一体成型，所述第一本体包括第一顶壁、第一底壁、以及连接于所述第一顶壁和所述第一底壁之间的第一侧壁，所述第一顶壁和所述第一底壁均沿垂直于板片层叠方向延伸，所述第一顶壁比所述第一底壁远离所述换热芯体；所述第一安装孔设于所述第一顶壁，所述第一安装孔与所述第一端口同轴设置或者偏心设置，所述凸起部自所述第一底壁朝向所述第一板孔延伸。The plate heat exchanger according to claim 4, wherein the fitting piece is integrally formed, and the first body includes a first top wall, a first bottom wall, and is connected to the first top wall and the The first side wall between the first bottom wall, the first top wall and the first bottom wall both extend in a direction perpendicular to the stacking direction of the plates, and the first top wall is farther away than the first bottom wall The heat exchange core; the first mounting hole is provided on the first top wall, the first mounting hole is arranged coaxially or eccentrically with the first port, and the protrusion is from the first A bottom wall extends toward the first plate hole.
根据权利要求7所述的板式换热器，其特征在于，所述第二端口设于所述第一侧壁，所述第一端口的轴向与所述第二端口的轴向相垂直。The plate heat exchanger according to claim 7, wherein the second port is provided on the first side wall, and the axial direction of the first port is perpendicular to the axial direction of the second port.
根据权利要求7所述的板式换热器，其特征在于，所述第二端口设于所述第一顶壁，所述第一腔包括相连通的第一子腔和第二子腔，所述第一子腔通过所述第一端口与所述第一子孔道连通，所述第二子腔自所述第二端口向所述第一子腔倾斜的延伸。The plate heat exchanger according to claim 7, wherein the second port is provided on the first top wall, and the first cavity includes a first sub-cavity and a second sub-cavity that are connected, so The first sub-cavity communicates with the first sub-channel through the first port, and the second sub-cavity extends obliquely from the second port to the first sub-cavity.
根据权利要求4所述的板式换热器，其特征在于，所述第一本体包括固定连接的上壳体和下壳体，所述上壳体包括沿垂直于板片层叠方向延伸的第一子部和自所述第一子部的边缘沿板片层叠方向延伸的第二子部，所述第一安装孔和所述第二端口均设于所述第一子部；The plate heat exchanger according to claim 4, wherein the first body includes an upper shell and a lower shell that are fixedly connected, and the upper shell includes a first body extending in a direction perpendicular to the stacking direction of the plates. A sub-portion and a second sub-portion extending from the edge of the first sub-portion along the plate stacking direction, the first mounting hole and the second port are both provided in the first sub-portion;

所述下壳体包括所述凸起部以及与所述凸起部一体连接的第三子部，所述第三子部开设有相连通的第一凹槽和第一通道，所述第一通道与所述第一端口连通；所述第一凹槽沿垂直于板片层叠方向延伸，所述第一通道和所述第一安装孔同轴设置或者偏心设置；在垂直于所述板片的层叠方向的平面上，所述第一凹槽的投影与所述第二端口的投影至少部分重合；所述上壳体和所述下壳体通过所述第二子部和所述第三子部之间相对的侧面焊接固定。The lower housing includes the protruding portion and a third sub-portion integrally connected with the protruding portion, and the third sub-portion is provided with a first groove and a first channel that are communicated with each other. The channel communicates with the first port; the first groove extends along the direction perpendicular to the plate stacking direction, and the first channel and the first mounting hole are arranged coaxially or eccentrically; On the plane of the stacking direction, the projection of the first groove and the projection of the second port at least partially overlap; the upper housing and the lower housing pass through the second sub-part and the third The opposite sides between the sub-parts are welded and fixed.
根据权利要求1所述的板式换热器，其特征在于，所述第一阻挡部设有第二安装孔和翻边部，所述翻边部位于第二安装孔的***，且所述翻边部自所述第一阻挡部沿第二安装孔的边缘朝向远离所述第一子孔道的方向翘起；所述第二管部穿过所述第二安装孔伸入所述第二子孔道，且所述翻边部与第二管部的外壁周向密封固定。The plate heat exchanger according to claim 1, wherein the first blocking portion is provided with a second mounting hole and a flanged portion, the flanged portion is located on the periphery of the second mounting hole, and the flange The edge portion is tilted from the first blocking portion along the edge of the second mounting hole toward the direction away from the first sub-channel; the second pipe portion extends through the second mounting hole into the second sub-channel A hole, and the flanged portion and the outer wall of the second tube portion are sealed and fixed circumferentially.
根据权利要求3所述的板式换热器，其特征在于，所述第一边板包括板主体以及与板主体焊接为一体的加强板；所述加强板位于所述板主体远离所述板片的一侧，所述第一板孔、所述第二板孔和所述第三板孔均贯穿所述板主体以及所述加强板；所述第二凸台与所述加强板的顶面焊接固定，所述第一凸台的外侧壁在所述第一板孔处与所述加强板焊接的内侧壁焊接固定。The plate heat exchanger according to claim 3, wherein the first side plate includes a plate main body and a reinforcing plate welded to the main body; the reinforcing plate is located on the main body away from the plate. On one side, the first plate hole, the second plate hole, and the third plate hole all penetrate the plate body and the reinforcing plate; the second boss and the top surface of the reinforcing plate The outer side wall of the first boss is welded and fixed to the inner side wall of the reinforcing plate at the first plate hole.
根据权利要求2所述的板式换热器，其特征在于，所述板式换热器还包括第一外接管和第二外接管，所述第一外接管和所述第二外接管均与所述第一边板相固定，所述第一外接管通过所述第二板孔与所述第二流道连通，所述第二外接管通过所述第三板孔与所述第二流道连通。The plate heat exchanger according to claim 2, wherein the plate heat exchanger further comprises a first external pipe and a second external pipe, and the first external pipe and the second external pipe are both connected to the The first side plate is fixed, the first external pipe communicates with the second flow channel through the second plate hole, and the second external pipe communicates with the second flow channel through the third plate hole Connected.
根据权利要求13所述的板式换热器，其特征在于，所述第一外接管和所述第二外接管位于所述板式换热器宽度方向的同一侧；或者所述第一外接管和所述第二外接管呈对角设置。The plate heat exchanger according to claim 13, wherein the first external pipe and the second external pipe are located on the same side in the width direction of the plate heat exchanger; or the first external pipe and The second external pipe is arranged diagonally.
根据权利要求1至14任一所述的板式换热器，其特征在于，所述板式换热器为蒸发器，所述第一流道用于制冷剂的流通；所述第四端口作为所述制冷剂的进口，所述第二端口作为所述制冷剂的出口，所述第一子板间通道的通道数量大于所述第二子板间通道的通道数量。The plate heat exchanger according to any one of claims 1 to 14, wherein the plate heat exchanger is an evaporator, the first flow channel is used for the circulation of refrigerant; and the fourth port is used as the A refrigerant inlet, the second port serves as an outlet of the refrigerant, and the number of channels between the first sub-plates is greater than the number of channels between the second sub-plates.
根据权利要求1至14任一所述的板式换热器，其特征在于，所述板式换热器为蒸发器，所述第一流道用于制冷剂的流通；所述第二端口作为所述制冷剂的进口，所述第四端口作为所述制冷剂的出口，所述第一子板间通道的通道数量小于所述第二子板间通道的通道数量。The plate heat exchanger according to any one of claims 1 to 14, wherein the plate heat exchanger is an evaporator, the first flow channel is used for the circulation of refrigerant; the second port is used as the A refrigerant inlet, the fourth port serves as an outlet of the refrigerant, and the number of channels between the first sub-plates is smaller than the number of channels between the second sub-plates.
根据权利要求1至14任一所述的板式换热器，其特征在于，所述板式换热器为冷凝器，所述第一流道用于制冷剂的流通；所述第四端口作为所述制冷剂的进口，所述第二端口作为所述制冷剂的出口，所述第一子板间通道的通道数量小于所述第二子板间通道的通道数量。The plate heat exchanger according to any one of claims 1 to 14, wherein the plate heat exchanger is a condenser, the first flow path is used for the circulation of refrigerant; the fourth port is used as the The refrigerant inlet, the second port serves as the refrigerant outlet, and the number of channels between the first sub-plates is smaller than the number of channels between the second sub-plates.
根据权利要求1至14任一所述的板式换热器，其特征在于，所述板式换热器为冷凝器，所述第一流道用于制冷剂的流通；所述第二端口作为所述制冷剂的进口，所述第四端口作为所述制冷剂的出口，所述第一子板间通道的通道数量大于所述第二子板间通道的通道数量。The plate heat exchanger according to any one of claims 1 to 14, wherein the plate heat exchanger is a condenser, the first flow channel is used for the circulation of refrigerant; the second port is used as the The refrigerant inlet, the fourth port serves as the refrigerant outlet, and the number of channels between the first sub-plates is greater than the number of channels between the second sub-plates.