Heat exchanger and dishwasher

Abstract

The utility model discloses a heat exchanger and a dish-washing machine with the heat exchanger, the heat exchanger comprises a shell, a shunting assembly and a converging assembly, the shell is internally provided with a first flow channel and a second flow channel which are distributed at an interval; the flow dividing assembly is connected with one end of the shell and provided with a first water inlet communicating with the first flow channel and a second water inlet communicating with the second flow channel. The confluence assembly is connected with the other end of the shell and provided with a first water outlet communicated with the first flow channel and a second water outlet communicated with the second flow channel. According to the heat exchanger provided by the embodiment of the utility model, water mixing among the flow channels can be prevented, so that the water quality of the flow channels can be prevented from being polluted.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, and particularly relates to a heat exchanger and a dishwasher having the heat exchanger. Background Art

[0002] Currently, a washing cavity can be communicated with a water tank, so as to supply water to the washing cavity. The heat exchanger can realize the heat exchange between the liquid in the washing cavity and the liquid in the water tank, thereby realizing the waste heat recovery of the liquid in the washing cavity.

[0003] In the related art, the heat exchanger is generally installed in the water tank. When the liquid in the washing cavity exchanges heat with the liquid in the water tank, there is a phenomenon of water cross-flow between the heat exchange channels in the heat exchanger, resulting in water quality pollution. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems in the related art to some extent. For this reason, an object of the utility model is to provide a heat exchanger having independent first and second channels, which can ensure that the water quality of the channels is not polluted.

[0005] Another object of the utility model is to provide a dishwasher including the aforementioned heat exchanger.

[0006] The heat exchanger according to an embodiment of the utility model includes: a housing, a flow splitting component and a flow converging component. The housing is provided with a first channel and a second channel which are spaced apart; the flow splitting component is connected to one end of the housing and is provided with a first water inlet communicating with the first channel and a second water inlet communicating with the second channel; the flow converging component is connected to the other end of the housing and is provided with a first water outlet communicating with the first channel and a second water outlet communicating with the second channel.

[0007] The heat exchanger according to an embodiment of the utility model can construct independent first and second channels in the heat exchanger by arranging a flow splitting component and a flow converging component connected to the housing, and can prevent water cross-flow between the channels, thereby ensuring that the water quality of the channels is not polluted.

[0008] In addition, the heat exchanger according to the above embodiment of the utility model may further have the following additional technical features:

[0009] In some examples of the utility model, the flow splitting component and the housing are of a split structure.

[0010] In some examples of the utility model, the flow converging component and the housing are of a split structure.

[0011] In some examples of the utility model, one end of the housing is provided with a first opening, and the flow splitting component includes a first end cover which covers the first opening.

[0012] In some examples of the present utility model, a second opening is provided at the other end of the housing, and the current collecting assembly includes a second end cover that covers the second opening.

[0013] In some examples of the present utility model, the current dividing assembly further includes a current divider disposed on the first end cover; the current collecting assembly further includes a current collector disposed on the second end cover.

[0014] In some examples of the present utility model, a first flanging is provided at one end of the housing, and a second flanging is provided at the other end. The first end cover includes a third flanging, and the second end cover includes a fourth flanging. The first flanging is connected to the third flanging, and the second flanging is connected to the fourth flanging.

[0015] In some examples of the present utility model, the current divider is in interference fit with the housing and the first end cover.

[0016] In some examples of the present utility model, the current collector is in interference fit with the housing and the second end cover.

[0017] In some examples of the present utility model, the current divider and / or the current collector is a flexible member.

[0018] In some examples of the present utility model, the first end cover is provided with a first rib that abuts against the current divider, and the current divider is provided with a second rib that abuts against the housing; the second end cover is provided with a third rib that abuts against the current collector, and the current collector is provided with a fourth rib that abuts against the housing.

[0019] In some examples of the present utility model, the current divider is provided with a first rib that abuts against the first end cover, and the housing is provided with a second rib that abuts against the current divider; the current collector is provided with a third rib that abuts against the second end cover, and the housing is provided with a fourth rib that abuts against the current collector.

[0020] In some examples of the present utility model, the heat exchanger further includes a heat exchange portion that includes a plurality of heat exchange tubes. The plurality of heat exchange tubes are disposed in the housing, and a plurality of first flow channels that are separated from each other are formed in the plurality of heat exchange tubes. A plurality of second flow channels that are separated from each other are formed between the plurality of heat exchange tubes and / or between the plurality of heat exchange tubes and the housing.

[0021] In some examples of the present invention, a partition plate is provided in the shell, the partition plate connects two side walls of the shell along the height direction and divides the internal space of the shell into multiple sub-cavities, and the multiple heat exchange tubes are respectively arranged in the multiple sub-cavities.

[0022] In some examples of the present invention, the shell includes a first inner side surface and a second inner side surface opposite to each other along the width direction, the first inner side surface is provided with a first positioning groove, the second inner side surface is provided with a second positioning groove, one side edge of the heat exchange tube along the width direction is positioned at the first positioning groove, and the other side edge is positioned at the second positioning groove.

[0023] In some examples of the present invention, one end of the heat exchange tube is penetrated and matched with the diverter; the other end of the heat exchange tube is penetrated and matched with the concentrator.

[0024] In some examples of the present invention, the plurality of heat exchange tubes are arranged along a width direction of the heat exchanger.

[0025] In some examples of the present invention, the diverter includes a first diverter groove and a second diverter groove, one side of the first diverter groove is connected to the first water inlet, and the other side is connected to the multiple first flow channels; one side of the second diverter groove is connected to the second water inlet, and the other side is connected to the multiple second flow channels; the confluence groove includes a first confluence groove and a second confluence groove, one side of the first confluence groove is connected to the first water outlet, and the other side is connected to the multiple first flow channels; one side of the second confluence groove is connected to the second water outlet, and the other side is connected to the multiple second flow channels.

[0026] In some examples of the present invention, in the height direction of the shell, the second diverter groove is arranged on the upper side of the diverter, and the second confluence groove is arranged on the lower side of the confluence.

[0027] In some examples of the present invention, the multiple heat exchange tubes are arranged along the width direction of the heat exchanger, the diverter extends along the width direction of the heat exchanger, the first diverter groove and the second diverter groove extend along the width direction of the heat exchanger and are distributed along the thickness direction; the confluence groove extends along the width direction of the heat exchanger, the first confluence groove and the second confluence groove extend along the width direction of the heat exchanger and are distributed along the thickness direction.

[0028] In some examples of the present utility model, a plurality of first grilles and a plurality of second grilles are provided on the diverter. A plurality of mutually separated first interfaces are formed between the plurality of first grilles. The plurality of first interfaces are communicated with the first water inlet and the plurality of first flow channels. A plurality of mutually separated second interfaces are formed between the plurality of second grilles. The plurality of second interfaces are communicated with the second water inlet and the plurality of second flow channels. A plurality of third grilles and a plurality of fourth grilles are provided on the current collector. A plurality of mutually separated third interfaces are formed between the plurality of third grilles. The plurality of third interfaces are communicated with the first water outlet and the plurality of first flow channels. A plurality of mutually separated fourth interfaces are formed between the plurality of fourth grilles. The plurality of fourth interfaces are communicated with the second water outlet and the plurality of second flow channels.

[0029] The dishwasher according to an embodiment of the present utility model includes: the heat exchanger described above.

[0030] By applying the heat exchanger described above in the dishwasher, the dishwasher according to an embodiment of the present utility model can improve the waste heat recovery effect of the dishwasher, which is beneficial to improving the cleaning effect of the dishwasher.

[0031] In some examples of the present utility model, the dishwasher further includes: a water tank and an inner container. The inner container includes a washing cavity. The washing cavity is communicated with the water tank. The first flow channel is communicated with the washing cavity. The second flow channel is communicated with the water tank. Description of the Drawings

[0032] Figure 1 is a schematic structural view of the heat exchanger in some embodiments of the present utility model;

[0033] Figure 2 is a cross-sectional view of the heat exchanger in some embodiments of the present utility model;

[0034] Figure 3 is an assembly view of the heat exchanger in some embodiments of the present utility model;

[0035] Figure 4 is a cross-sectional view of the heat exchanger in some embodiments of the present utility model (showing the flow mode of water entering the first flow channel);

[0036] Figure 5 is a cross-sectional view of the heat exchanger in some embodiments of the present utility model (showing the flow mode of water entering the second flow channel);

[0037] Figure 6 is a schematic structural view of the diverter in some embodiments of the present utility model;

[0038] Figure 7 is a schematic structural view of the diverter in some embodiments of the present utility model;

[0039] Figure 8 It is a schematic structural diagram of the first end cover in some embodiments of the present utility model.

[0040] Reference numerals:

[0041] 100, heat exchanger; 10, housing; 11, first end cover; 113, third flanging; 111, first rib; 12, second end cover; 101, first water inlet; 102, first water outlet; 103, second water inlet; 104, second water outlet; 124, fourth flanging; 13, housing; 105, first positioning groove; 106, second positioning groove; 131, first flanging; 132, second flanging; 133, partition plate; 20, heat exchange tube; 110, first flow channel; 120, second flow channel; 30, flow divider; 31, first flow dividing groove; 32, second flow dividing groove; 301, first interface; 302, second interface; 33, second rib; 34, first grid; 35, second grid; 40, confluence device; 43, first confluence groove; 44, second confluence groove. Detailed implementation manners

[0042] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.

[0043] Combined with Figure 1 and Figure 2 , the heat exchanger 100 according to the embodiments of the present utility model includes: a housing 10, a flow dividing assembly, and a confluence assembly. The housing 10 is provided with a first flow channel 110 and a second flow channel 120 which are spaced apart; the flow dividing assembly is connected to one end of the housing 10 and is provided with a first water inlet 101 communicating with the first flow channel 110 and a second water inlet 103 communicating with the second flow channel 120; the confluence assembly is connected to the other end of the housing 10 and is provided with a first water outlet 102 communicating with the first flow channel 110 and a second water outlet 104 communicating with the second flow channel 120.

[0044] Specifically, there are two flow channels in the housing 10. The two flow channels may be arranged in a form in which the first flow channel 110 and the second flow channel 120 are adjacent and spaced in turn. Thus, heat exchange can be carried out between the adjacent first flow channel 110 and the second flow channel 120, which is beneficial to improving the heat exchange effect and the structural compactness.

[0045] Further, the flow splitting component and the flow confluence component are connected to both ends of the housing 10. The flow splitting component and the flow confluence component are configured to have corresponding water inlets and water outlets respectively for two flow channels. During application, the medium can enter the first flow channel 110 corresponding to the first water inlet 101 or the second flow channel 120 corresponding to the second water inlet 103 after entering the flow splitting component from the water inlet. After flowing through the first flow channel 110 or the second flow channel 120 and entering the flow confluence component for confluence, the medium in the first flow channel 110 can be discharged from the corresponding first water outlet 102, and the medium in the second flow channel 120 can be discharged from the corresponding second water outlet 104. Thus, two independent heat exchange flow channels can be constructed on the heat exchanger 100, which is beneficial to improving the heat exchange effect and can avoid the phenomenon of water cross-flow between the heat exchange flow channels in the heat exchanger 100, resulting in water quality pollution.

[0046] In some embodiments of the present utility model, the flow splitting component and the housing 10 are of a split structure. The flow confluence component can also be of a split structure with the housing 10. Alternatively, both the flow splitting component and the flow confluence component are of a split structure with the housing 10. Specifically, the flow splitting component and the flow confluence component being of a split structure with the housing can facilitate manufacturing and assembly, and can also improve the tightness of the cooperation between the flow splitting component, the flow confluence component, the housing and the structures inside the housing. For example, the heat exchange tubes can be first installed into the housing. When assembling the flow splitting component and the flow confluence component, the housing and the heat exchange tubes inside the housing can be connected simultaneously. The split structure can also facilitate maintenance, thereby improving the flexibility and durability of the heat exchanger during use.

[0047] Combined Figure 2 , in some embodiments of the present utility model, a first opening is provided at one end of the housing 10. The flow splitting component includes a first end cover 11, and the first end cover 11 covers the first opening. A second opening is provided at the other end of the housing 10. The flow confluence component includes a second end cover 12, and the second end cover 12 covers the second opening. Specifically, the housing 10 is provided as a straight cylinder extending along the length direction of the heat exchanger 100, which can facilitate placing heat exchange structures for realizing the heat exchange effect, such as a plurality of heat exchange tubes 20, inside the housing 10. The two ends of the housing 10 are respectively connected to the first end cover 11 and the second end cover 12. The first water inlet 101 and the second water inlet 103 are provided on the first end cover 11, and the first water outlet 102 and the second water outlet 104 are provided on the second end cover 12. In this way, the water inlets and water outlets are respectively provided at both ends of the housing 10, which can increase the length of the heat exchange flow channels, thereby increasing the contact time between the inlet water and the heat exchange flow channels, and thus improving the heat exchange effect. More specifically, a plurality of heat exchange tubes 20 are provided in the housing 10, and the housing 10 extends in the same direction as the heat exchange tubes 20, which can facilitate the assembly of the heat exchange tubes 20, thereby being beneficial to spatial arrangement and beneficial to reducing the volume of the heat exchanger 100.

[0048] In some embodiments of the present utility model, the shunt assembly further includes a shunt, and the shunt is disposed on the first end cover; the confluence assembly further includes a confluence, and the confluence is disposed on the second end cover. That is to say, the shunt 30 can be disposed between the first end cover 11 and the housing 10, and the shunt 30 can achieve a shunting effect between the water inlet and the flow channel; the confluence 40 can be disposed between the second end cover 12 and the housing 10, and the confluence 40 can achieve a confluence effect between the water outlet and the flow channel, thereby facilitating the improvement of the separation effect between the two flow channels.

[0049] Specifically, in some embodiments of the present utility model, a part of the shunt 30 extends into the first end cover 11, and the other part extends into the housing 10; a part of the confluence 40 extends into the second end cover 12, and the other part extends into the housing 10, which can improve the tightness of the connection between the shunt and the housing 10. The shunt 30 can be disposed between the first end cover 11 and the housing 10. One side of the shunt 30 can be connected to the water inlet of the first end cover 11, and the other side can be communicated with the heat exchange flow channel in the housing 10. The confluence 40 can be disposed between the second end cover 12 and the housing 10. One side of the confluence 40 can be connected to the water outlet of the second end cover 12, and the other side can be communicated with the heat exchange flow channel in the housing 10. Thus, it is convenient to realize the sealing fit between the shunt 30 and the first water inlet 101 and the second water inlet 103, and the sealing fit between the shunt 30 and the first flow channel 110 and the second flow channel 120, so as to ensure that the water at the first water inlet 101 only enters the first flow channel 110, and the water at the second water inlet 103 only enters the second flow channel 120. Similarly, the confluence 40 can be in sealing fit with the first water outlet 102 and the second water outlet 104, and the confluence 40 can be in sealing fit with the first flow channel 110 and the second flow channel 120, thereby preventing water from flowing between the two heat exchange flow channels at the water outlet.

[0050] More specifically, in combination with Figure 1 and Figure 2 , in some embodiments of the present utility model, one end of the housing 10 is provided with a first flanging 131, and the other end is provided with a second flanging 132. The first end cover 11 includes a third flanging 113, and the second end cover 12 includes a fourth flanging 124. The housing 10 and the first end cover 11 can be connected through the first flanging 131 and the third flanging 113, and the housing 10 and the second end cover 12 can be connected through the second flanging 132 and the fourth flanging 124, which is convenient for connection. Specifically, the housing 10 includes a main body, a first flanging 131 and a second flanging 132. The first flanging 131 and the second flanging 132 are connected to opposite sides of the main body, and positioning parts for accommodating the shunt 30 and the confluence 40 can be constructed on opposite sides of the housing 10, so that a part of the shunt 30 and the confluence 40 can extend into the housing 10. In combination with Figure 2, the diverter 30 and the manifold 40 can be respectively abutted against the main body, the first flanging 131 and the second flanging 132 surround the diverter 30 and the manifold 40, and the first end cover 11 and the second end cover 12 are connected to the housing 10 through the flanging, so that the interface end will not interfere with the diverter.

[0051] Furthermore, the heat exchanger 100 further includes a diverter 30 and a manifold 40. Both the diverter 30 and the manifold 40 are disposed in the housing 10. The diverter 30 and the manifold 40 can selectively communicate with a plurality of first flow channels 110 and a plurality of second flow channels 120. The diverter 30 connects the first water inlet 101 and a plurality of first flow channels 110 and connects the second water inlet 103 and a plurality of second flow channels 120; the manifold 40 connects the first water outlet 102 and a plurality of first flow channels 110 and connects the second water outlet 104 and a plurality of second flow channels 120. That is to say, the diverter 30 communicates with the first water inlet 101 and the second water inlet 103, and can divert the water from the first water inlet 101 into a plurality of first flow channels 110, and divert the water from the second water inlet 103 into a plurality of second flow channels 120, thereby improving the heat exchange effect between the inlet water and the plurality of first flow channels 110. The manifold 40 communicates with the first water outlet 102 and the second water outlet 104, and can converge the water after heat exchange in the plurality of first flow channels 110 and the plurality of second flow channels 120 in the manifold 40 and discharge it from the first water outlet 102 or the second water outlet 104. Thus, the diverter 30 and the manifold 40 can achieve a diverting or converging effect at the water inlet and the water outlet of the heat exchanger 100, thereby improving the heat exchange effect.

[0052] Furthermore, both the diverter 30 and the manifold 40 are in sealed cooperation with the housing 10. Specifically, as described above, the diverter 30 communicates with the water inlet and the heat exchange flow channel, and the manifold 40 communicates with the water outlet and the heat exchange flow channel. In this way, after the diverter 30 and the manifold 40 are in sealed cooperation with the housing 10, a seal can be formed between the water inlet and the diverter 30, and a seal can be formed between the diverter 30 and the heat exchange flow channel. A seal can also be formed between the water outlet and the manifold 40, and a seal can be formed between the manifold 40 and the heat exchange flow channel, so as to achieve a sealed isolation between the first flow channel 110 and the second flow channel 120. The water between the first flow channel 110 and the second flow channel 120 can flow independently, and water mixing or water quality pollution can be prevented.

[0053] According to the heat exchanger 100 of the embodiment of the present invention, by providing a diverter 30 and a manifold 40 that are in sealed cooperation with the housing 10 in the housing 10, independent first flow channels 110 and second flow channels 120 can be constructed in the heat exchanger 100, and water mixing between the flow channels can be prevented, so that the water quality of the flow channels can be ensured not to be polluted.

[0054] In some embodiments of the present utility model, the diverter can be a flexible member, so that the diverter has a certain deformation ability or elasticity, which is convenient for assembling with the housing 10, facilitating the interference fit between the diverter and the housing 10, thereby facilitating the realization of the sealed connection between the diverter and the housing 10 and having a simple structure and being easy to construct. Specifically, the diverter 30 can be in interference fit with the housing 10. The current collector 40 can be in interference fit with the housing 10.

[0055] Combined with Figure 3 , the first end cap 11 and the second end cap 12 can be detachably connected to the housing 10. Thus, it is convenient to install the diverter 30 between the first end cap 11 and the housing 10, and install the current collector 40 between the second end cap 12 and the housing 10, which is convenient for assembly and maintenance.

[0056] Furthermore, combined with Figure 2 and Figure 8 , in some embodiments of the present utility model, the first end cap 11 is provided with a first rib 111, the first rib 111 abuts against the diverter 30, the diverter 30 is provided with a second rib 33, and the second rib 33 abuts against the housing 10; the second end cap 12 is provided with a third rib, the third rib abuts against the current collector 40, and the current collector 40 is provided with a fourth rib, and the fourth rib abuts against the housing 10.

[0057] That is to say, when the diverter 30 cooperates with the first end cap 11, the first rib 111 of the first end cap 11 can be in extrusion fit with the diverter 30 to achieve a sealed connection. When the diverter 30 cooperates with the housing 10, the second rib 33 of the diverter 30 is in extrusion fit with the housing 10 to achieve a sealed connection. Thus, a first sealing area can be constructed at the connection between the diverter 30 and the first end cap 11, and a second sealing area can be constructed at the connection between the current collector 40 and the housing 10.

[0058] When the current collector 40 cooperates with the second end cap 12, the third rib of the second end cap 12 can be in extrusion fit with the current collector 40 to achieve a sealed connection. When the current collector 40 cooperates with the housing 10, the fourth rib of the current collector 40 is in extrusion fit with the housing 10 to achieve a sealed connection. Thus, a third sealing area can be constructed at the connection between the current collector 40 and the second end cap 12, and a fourth sealing area can be constructed at the connection between the current collector 40 and the housing 10.

[0059] Of course, it can also be that the diverter 30 is provided with a first rib, the first rib abuts against the first end cap 11, the housing 10 is provided with a second rib, and the second rib abuts against the diverter 30; the current collector 40 is provided with a third rib, the third rib abuts against the second end cap 12, and the housing 10 is provided with a fourth rib, and the fourth rib abuts against the current collector 40.

[0060] In some embodiments of the present utility model, the first rib 111, the second rib 33, the third rib, and the fourth rib can all be triangular ribs. The triangular ribs can enhance the support effect, facilitate increasing the contact area, and improve the tightness of the fit. When the diverter 30 and the current collector 40 are flexible members, the triangular ribs can be in extrusion fit with the diverter, which can improve the connection tightness, can directly achieve sealing after assembly, and is beneficial to simplifying the structure.

[0061] In some embodiments of the present utility model, the heat exchanger 100 further includes a heat exchange part. The heat exchange part includes a plurality of heat exchange tubes 20. The plurality of heat exchange tubes 20 are arranged in the housing 10. A plurality of mutually separated first flow channels 110 are formed in the plurality of heat exchange tubes 20. A plurality of mutually separated second flow channels 120 are formed between the plurality of heat exchange tubes 20 and / or between the plurality of heat exchange tubes 20 and the housing 10. In other words, the housing 10 can be used to accommodate the plurality of heat exchange tubes 20, and the second flow channels 120 can also be constructed between the inner wall of the housing 10 and the heat exchange tubes 20. In this way, by arranging a plurality of heat exchange tubes 20 in the housing 10, a plurality of first flow channels 110 are formed in the heat exchange tubes 20, and a plurality of second flow channels 120 can be formed between the plurality of heat exchange tubes 20 and between the plurality of heat exchange tubes 20 and the housing 10, so that two non-communicating first flow channels 110 and second flow channels 120 can be formed in the heat exchanger 100, improving the heat exchange effect of the heat exchanger 100. More specifically, the first water inlet 101 and the first water outlet 102 can be communicated with the plurality of first flow channels 110, and the second water inlet 103 and the second water outlet 104 can be communicated with the plurality of second flow channels 120. In this way, when the heat exchanger 100 is in use, the first flow channel 110 or the second flow channel 120 can be selectively connected according to the actual situation to improve the heat exchange effect. In addition, since the second flow channels 120 can be arranged between the plurality of heat exchange tubes 20, the plurality of first flow channels 110 and the plurality of second flow channels 120 are arranged in an alternating manner, which can improve the heat exchange effect, can also improve the compactness of the flow channel arrangement, and further reduce the volume of the heat exchanger 100 on the basis of the same heat exchange capacity.

[0062] Optionally, the heat exchange tube 20 can be a microchannel flat tube to facilitate improving the heat exchange effect.

[0063] Combined with Figure 3, in some embodiments of the present utility model, a partition plate 133 is provided inside the housing 10. The partition plate 133 connects two side walls of the housing 10 along the height direction, and the internal space of the housing 10 is divided into multiple sub-chambers at intervals. A plurality of heat exchange tubes 20 are respectively arranged in the multiple sub-chambers. That is to say, the partition plate 133 can provide support inside the housing 10 to improve the structural stability of the housing 10. The partition plate 133 can also construct multiple sub-chambers inside the housing 10, and a plurality of heat exchange tubes 20 can be distributed in the multiple sub-chambers, so as to facilitate assembly and maintenance and improve the overall structural stability of the heat exchanger 100. Specifically, the frames of the flow divider 30 and the flow collector 40 are connected to the frame of the housing 10, and the first rib 111 of the flow divider 30 and the fourth rib of the flow collector 40 can abut against the partition plate 133, thereby improving the tightness of the connection.

[0064] In some embodiments of the present utility model, one end of the heat exchange tube 20 is inserted and fitted with the flow divider 30, so as to realize the communication between the first flow channel 110 in the heat exchange tube 20 and the flow divider 30; the other end of the heat exchange tube 20 is inserted and fitted with the flow collector 40, so as to realize the communication between the first flow channel 110 in the heat exchange tube 20 and the flow collector 40, which can improve the tightness of the fit and facilitate the construction of an independent first flow channel 110, so that the first flow channel 110 can be separated from the second flow channel 120. Combining the foregoing, during assembly, after a part of the flow divider 30 and the flow collector 40 extends into the housing 10, the relative two ends of the heat exchange tube 20 can be directly fitted with the flow divider 30 and the flow collector 40, thereby realizing the connection tightness and being beneficial to improving the sealing effect.

[0065] Combined with Figure 3 , in some embodiments of the present utility model, the housing 10 includes a first inner side surface and a second inner side surface opposite to each other along the width direction. The first inner side surface is provided with a first positioning groove 105, and the second inner side surface is provided with a second positioning groove 106. One side edge of the heat exchange tube 20 in the width direction is positioned in the first positioning groove 105, and the other side edge is positioned in the second positioning groove 106. Thus, the relative two sides of the heat exchange tube 20 can be positioned by the first positioning groove 105 and the second positioning groove 106, which can facilitate the assembly of the heat exchange tube 20 and also improve the structural stability of the heat exchanger 100 after the heat exchange tube 20 is assembled.

[0066] Combined with Figure 4 and Figure 5, in some embodiments of the present utility model, the diverter 30 includes a first diversion groove 31 and a second diversion groove 32. One side of the first diversion groove 31 communicates with the first water inlet 101, and the other side is connected to a plurality of first flow channels 110; one side of the second diversion groove 32 communicates with the second water inlet 103, and the other side communicates with a plurality of second flow channels 120. Thus, the first diversion groove 31 can achieve the diversion of the first water inlet 101 to the plurality of first flow channels 110, and the second diversion groove 32 can achieve the diversion of the second water inlet 103 to the plurality of second flow channels 120.

[0067] The collector 40 includes a first collection groove 43 and a second collection groove 44. One side of the first collection groove 43 communicates with the first water outlet 102, and the other side is connected to a plurality of first flow channels 110; one side of the second collection groove 44 communicates with the second water outlet 104, and the other side communicates with a plurality of second flow channels 120. Thus, the water in the plurality of first flow channels 110 can be collected in the first collection groove 43 and discharged from the first water outlet 102, and the water in the plurality of second flow channels 120 can be collected in the second collection groove 44 and discharged from the second water outlet 104.

[0068] In some embodiments of the present utility model, in combination with Figure 4 and Figure 5 , in the height direction of the housing 10, the second diversion groove 32 is provided on the upper side of the diverter 30, and the second collection groove 44 is provided on the lower side of the collector 40, which can improve the water outlet effect. Especially when the second flow channel 120 flows through wastewater, the position of the second diversion groove 32 is relatively high, which is conducive to the discharge of wastewater.

[0069] In addition, according to Figure 4 and Figure 5 it can be seen that the first diversion groove 31 and the first collection groove 43 are arranged staggeredly in the height direction of the housing 10, and the second diversion groove 32 and the second collection groove 44 are arranged staggeredly in the height direction of the housing 10. In this way, when the heat exchange medium enters the first flow channel 110, during the flow process of the medium from the first diversion groove 31 to the first collection groove 43, the heat exchange medium can fully fill the heat exchanger 100 (see Figure 4 ), thereby improving the heat exchange effect of the heat exchanger 100. The flow path of the heat exchange medium in the second flow channel 120 is the same, which will not be elaborated here (see Figure 5 ).

[0070] Figure 4 and Figure 5The state when the heat exchanger 100 is placed horizontally is shown. In actual applications, the heat exchanger 100 may need to be placed vertically. Therefore, one of the first shunt grooves 31 and the first confluence groove 43 is arranged on the upper side, and the other is arranged on the lower side, and the arrangement method of arranging one of the second shunt grooves 32 and the second confluence groove 44 on the upper side and the other on the lower side enables the heat exchange medium to fully flow into the plurality of first flow channels 110 and the plurality of second flow channels 120 based on gravity, thereby facilitating the improvement of the heat exchange effect.

[0071] In some embodiments of the present invention, the plurality of heat exchange tubes 20 are arranged along the width direction of the heat exchanger 100, the shunt device 30 extends along the width direction of the heat exchanger 100, the first shunt groove 31 and the second shunt groove 32 extend along the width direction of the heat exchanger 100 and are distributed along the thickness direction to be suitable for connecting the first flow channel 110 and the second flow channel 120 and improving the shunt effect; the confluence device 40 extends along the width direction of the heat exchanger 100, the first confluence groove 43 and the second confluence groove 44 extend along the width direction of the heat exchanger 100 and are distributed along the thickness direction to be suitable for connecting the first flow channel 110 and the second flow channel 120 and improving the confluence effect. That is to say, the shunt device 30 and the confluence device 40 can be of the same structure. When the shunt device is connected to the water inlet, it plays a shunt role, and when the shunt device is connected to the water outlet, it plays a confluence role.

[0072] Optionally, the width direction of the heat exchanger 100 can refer to Figure 2 the left - right direction in Figure 2 the length direction of the heat exchanger 100 can refer to Figure 2 the front - back direction in

[0073] Combined with Figure 6 and Figure 7, in some embodiments of the present utility model, a plurality of first gratings 34 and a plurality of second gratings 35 are provided on the diverter 30. A plurality of first interfaces 301 are formed between the plurality of first gratings 34 and are spaced apart from each other. The plurality of first interfaces 301 are communicated with the first water inlet 101 and the plurality of first flow channels 110. A plurality of second interfaces 302 are formed between the plurality of second gratings 35 and are spaced apart from each other. The plurality of second interfaces 302 are communicated with the second water inlet 103 and the plurality of second flow channels 120. That is to say, the plurality of first gratings 34 on the diverter 30 can block the plurality of second flow channels 120, and the first interfaces 301 between the plurality of first gratings 34 can communicate with the plurality of first flow channels 110, so as to prevent the water in the first water inlet 101 or the first diversion groove 31 from entering the second flow channels 120. The plurality of second gratings 35 can block the plurality of first flow channels 110, and the second interfaces 302 between the plurality of second gratings 35 can communicate with the plurality of second flow channels 120, so as to prevent the water in the second water inlet 103 or the second diversion groove 32 from entering the first flow channels 110, thereby realizing the separation of the first flow channels 110 and the second flow channels 120.

[0074] A plurality of third gratings and a plurality of fourth gratings (not shown in the figure) are provided on the current collector 40. A plurality of third interfaces are formed between the plurality of third gratings and are spaced apart from each other. The plurality of third interfaces are communicated with the first water outlet 102 and the plurality of first flow channels 110. A plurality of fourth interfaces are formed between the plurality of fourth gratings and are spaced apart from each other. The plurality of fourth interfaces are communicated with the second water outlet 104 and the plurality of second flow channels 120. The cooperation mode of the plurality of third gratings of the current collector 40 with the first water outlet 102 or the first current collecting groove 43 and the plurality of fourth gratings with the second water outlet 104 or the second current collecting groove 44 is the same as that of the diverter 30, and will not be described in detail here.

[0075] Combined with the foregoing, a plurality of second flow channels 120 can be formed between the plurality of heat exchange tubes 20. Therefore, on the diverter 30, the plurality of first gratings 34 and the plurality of second gratings 35 can be arranged along the thickness direction of the heat exchanger 100 and staggered along the width direction of the heat exchanger 100. In this way, when the first grating 34 connects the first flow channel 110, the second grating 35 blocks the second flow channel 120. The same is true for the third grating and the fourth grating of the current collector 40.

[0076] More specifically, combined with Figure 2 , the heat exchange tube 20 and the diverter can be sealed by end surface extrusion so that the diverter blocks the first flow channel 110 and connects the second flow channel 120; the heat exchange tube 20 and the diverter can be sealed by circumferential surface extrusion so that the diverter blocks the second flow channel 120 and connects the first flow channel 110.

[0077] A dishwasher according to an embodiment of the present utility model includes the aforementioned heat exchanger 100. By applying the aforementioned heat exchanger 100 in the dishwasher, the waste heat recovery effect of the dishwasher can be improved, which is conducive to improving the cleaning effect of the dishwasher.

[0078] In some embodiments of the present utility model, the dishwasher further includes a water tank and an inner container. The inner container includes a washing cavity, the washing cavity is communicated with the water tank, the first flow channel 110 is communicated with the washing cavity, the second flow channel 120 is communicated with the water tank, the first water inlet 101 and the first water outlet 102 are communicated with the washing cavity, and the second water inlet 103 and the second water outlet 104 are communicated with the water tank.

[0079] Specifically, the washing cavity can be communicated with the water tank to supply water to the washing cavity to realize the cleaning of tableware. Among them, the first water inlet 101 and the first water outlet 102 are communicated with the washing cavity, so that the high-temperature liquid in the washing cavity can circulate in the first flow channel 110 through the first water inlet 101 and the first water outlet 102. The second water inlet 103 and the second water outlet 104 are communicated with the water tank, so that the liquid in the water tank can circulate in the second flow channel 120, thereby realizing the heat exchange between the liquid in the washing cavity and the liquid in the water tank and realizing the waste heat recovery of the liquid in the washing cavity.

[0080] In specific applications, when the heat exchanger 100 is applied in the dishwasher for waste heat recovery, the high-temperature liquid in the washing cavity flows through the first water inlet 101 to the first shunt groove 31, flows to the first flow channel 110 after being shunted by the first shunt groove 31, and then flows from the first flow channel 110 to the second confluence groove 44, and flows out of the first water outlet 102 under the shunting action of the second confluence groove 44 to realize the flow of the high-temperature side flow path; the liquid in the water tank enters the first confluence groove 43 through the second water inlet 103, enters the second flow channel 120 under the shunting action of the first confluence groove 43, and then flows from the second flow channel 120 to the second shunt groove 32, and flows out of the second outlet under the shunting action of the second shunt groove 32 to realize the flow of the low-temperature side flow path. Among them, the liquid in the washing cavity of the dishwasher is a liquid with a higher temperature, and the liquid in the water tank is a liquid with a lower temperature. Therefore, through the above heat exchange cycle, the temperature of the liquid in the water tank is increased, that is, the waste heat recovery of the liquid in the dishwasher is realized, the heat utilization rate of the dishwasher is improved, and the energy consumption of the dishwasher is reduced. Specifically, the liquid in the washing cavity is heated during the main washing stage of the dishwasher, so the temperature is higher.

[0081] It can be understood that the dishwasher includes at least a main washing stage and a rinsing stage. In the main washing stage, liquid is conveyed into the washing cavity of the dishwasher and heated to improve the cleaning effect on the kitchen utensils in the washing cavity; in the rinsing stage, the kitchen utensils are cleaned with clean water to improve the cleaning degree. Among them, the water used in the rinsing stage is heated after heat exchange with the high-temperature water in the main washing stage, thereby improving the rinsing effect on the kitchen utensils and shortening the rinsing time.

[0082] The heat exchanger 100 of a specific embodiment of the present invention will be described below with reference to the accompanying drawings.

[0083] Combined with Figures 1 to 8 , the heat exchanger 100 includes a housing 10, a first interface 301 end 11, a second interface 302 end 12, a diverter 30, a collector 40, and a plurality of heat exchange tubes 20. Among them, the main functions of the first interface 301 end 11 and the second interface 302 end 12 are to be externally connected to connecting pipelines, and they are made of rigid materials as a whole and are incompressible; the first water inlet 101 is an inlet for a water flow, which is communicated with the first interface 301 end 11; the first water outlet 102 is an outlet for a water flow, which is communicated with the second interface 302 end 12; the second water inlet 103 is an inlet for another water flow, which is communicated with the first interface 301 end 11; the first water outlet 102 is an outlet for another water flow, which is communicated with the second interface 302 end 12. The main function of the diverter 30 is to divide the water flow. The structure formed by combining it with the first interface 301 end 11 can realize the separation of cold and hot water, and it is made of flexible materials as a whole and has a certain elasticity. The main function of the housing 10 is to connect the diverter and the plurality of heat exchange tubes 20, and it is made of rigid materials as a whole and is incompressible. The main function of the plurality of heat exchange tubes 20 is to serve as the cold end or the hot end of the heat exchanger 100 and provide a flow channel area for one of the water flows. They are made of stainless steel materials as a whole and are in the shape of oval heat exchange tubes 20. The wall thickness of the heat exchange tubes 20 is greater than 0.4 mm, the distance between the heat exchange tubes 20 is greater than 0.5 mm, and they are incompressible as a whole; a plurality of second flow channels 120, whose main function is to serve as the hot end or the cold end of the heat exchanger 100 (depending on the plurality of heat exchange tubes 20. If the plurality of heat exchange tubes 20 are the cold end of the heat exchanger 100, the plurality of second flow channels 120 are the hot end, otherwise vice versa), and provide a flow channel area for one of the water flows. Its overall structure is formed by combining the structure of the plurality of heat exchange tubes 20 and the housing 10, and is in the shape of rectangular heat exchange tubes 20. The distance between them is greater than 0.5 mm, and they are incompressible as a whole; the collector 40 has the same structure as the diverter 30, but their arrangement positions in the overall structure of the heat exchanger 100 are different. The structure formed by combining it with the second interface 302 end 12 can realize the separation of cold and hot water.

[0084] The assembly form / sequence of the above components is as follows: 1. First, a plurality of stainless-steel heat exchange tubes 20 are assembled into the housing 10 (positioning grooves are reserved inside the housing 10, and the group can be directly installed in the preset position); 2. The flow divider is assembled into the first interface 301 end 11 and the second interface 302 end 12 respectively according to the Figure 2 shown positions to form a flow dividing device with a cold and hot water separation structure; 3. The first interface 301 end 11 with the flow divider 30 and the second interface 302 end 12 with the flow collector 40 are aligned with both ends of the housing 10 equipped with a plurality of heat exchange tubes 20 through a tooling (see Figure 3 ), and by applying a certain pressure, the cross-sections of the first interface 301 end 11 and the second interface 302 end 12 are fully contacted with the end faces of both ends of the housing 10, and they can be connected by welding / clamping / screws, etc., and finally form an integral structure as shown in Figure 1 .

[0085] As Figure 8 shown, it is an elevation view of the first interface 301 end 11. The structures of the first interface 301 end 11 and the second interface 302 end 12 can be the same. Its main internal feature is that a set of raised triangular ribs are made along the inner wall surface and the center line. The size of the ribs is (width: 1 mm to 2 mm, height 1 mm), and the material used is the same as the port structure itself. The overall structures of the first interface 301 end 11 and the second interface 302 end 12 are the same.

[0086] As Figure 6 and Figure 7 shown, it is an elevation view of the flow divider 30. Its main internal feature is that a set of raised triangular ribs are made along the inner wall surface and the center line. The size of the ribs is (width: 1 mm to 2 mm, height 1 mm), and the material used is the same as the flow divider structure itself (soft flexible material). The overall structures of the flow divider 30 and the flow collector 40 are the same. When the flow divider 30 and the flow collector 40 are respectively installed at the water inlet end and the water outlet end of the heat exchanger 100, the installation directions of the flow divider 30 and the flow collector 40 are opposite along the thickness direction or the up and down direction.

[0087] The heat exchanger 100 includes four sealing zones. The first sealing zone is the seal achieved by extrusion between the end 11 of the first interface 301 and the diverter 30. The fourth sealing zone is the seal achieved by extrusion between the end 12 of the second interface 302 and the manifold 40. The second sealing zone is the seal achieved by hot plate welding between the end 11 of the first interface 301 and the port of the housing 10. Meanwhile, it can also be the seal achieved by extrusion between the diverter 30 and the inner port of the housing 10. The third sealing zone is the seal achieved by hot plate welding between the end 12 of the second interface 302 and the port of the housing 10. Meanwhile, it is also the seal achieved by extrusion between the manifold 40 and the inner port of the housing 10. That is to say, the sealing cooperation between the diverter and the interface end and the housing can be that one of the diverter and the interface end and the housing achieves an interference fit by extrusion, and the other achieves a sealing fit by fixed connection; it can also be that the diverter, the interface end, and the housing all achieve a sealing fit by extrusion fit or fixed connection. When the diverter is made of a flexible material, the sealing effect can be directly achieved by extrusion. Combining the above, ribs can be provided on the diverter, the interface end, or the housing. After the diverter deforms, it can cooperate with the ribs or improve the effect of extrusion or interference fit through the ribs.

[0088] As Figure 2 shown, it is the seal achieved by extrusion between multiple heat exchange tubes 20 and the end face of the diverter. At this time, the fluid 2 can enter the diverter through the outer flow channel; it can also be the seal achieved by extrusion between multiple heat exchange tubes 20 and the circumferential surface of the diverter. At this time, the fluid 1 can enter the diverter through the internal flow channels of the multiple heat exchange tubes 20.

[0089] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "circumferential", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0090] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0091] In the present utility model, unless otherwise clearly defined or limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0092] In the present utility model, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0093] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0094] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. A heat exchanger (100), characterized in that: include: A housing (10), wherein a first flow channel (110) and a second flow channel (120) are arranged in the housing (10) at intervals; A flow diversion component, the flow diversion component is connected to one end of the housing (10) and is provided with a first water inlet (101) connected to the first flow channel (110) and a second water inlet (103) connected to the second flow channel (120); A confluence assembly is connected to the other end of the shell (10) and is provided with a first water outlet (102) connected to the first flow channel (110) and a second water outlet (104) connected to the second flow channel (120).

2. The heat exchanger (100) according to claim 1, characterized in that: The flow dividing component and the housing (10) are of a split structure; and / or the flow converging component and the housing (10) are of a split structure.

3. The heat exchanger (100) according to claim 1, characterized in that: A first opening is provided at one end of the shell (10), and the flow diversion assembly includes a first end cover (11), and the first end cover (11) covers the first opening; and / or a second opening is provided at the other end of the shell (10), and the flow confluence assembly includes a second end cover (12), and the second end cover (12) covers the second opening.

4. The heat exchanger (100) according to claim 3, characterized in that: The flow splitter assembly further comprises a flow splitter (30), and the flow splitter (30) is arranged on the first end cover (11); the flow converging assembly further comprises a flow converging device (40), and the flow converging device (40) is arranged on the second end cover (12).

5. The heat exchanger (100) according to claim 3, characterized in that: One end of the shell (10) is provided with a first flange (131), and the other end is provided with a second flange (132); the first end cover (11) includes a third flange (113), and the second end cover (12) includes a fourth flange (124); the first flange (131) is connected to the third flange (113), and the second flange (132) is connected to the fourth flange (124).

6. The heat exchanger (100) according to claim 4, characterized in that: The flow divider (30) is interference fit with the shell (10) and the first end cover (11); and / or the flow converging device (40) is interference fit with the shell (10) and the second end cover (12).

7. The heat exchanger (100) according to claim 4, characterized in that: The flow divider (30) and / or flow converging device (40) is a flexible member.

8. The heat exchanger (100) according to claim 4, characterized in that: The first end cover (11) is provided with a first convex rib (111), the first convex rib (111) abuts against the diverter (30), the diverter (30) is provided with a second convex rib (33), the second convex rib (33) abuts against the shell (10); the second end cover (12) is provided with a third convex rib, the third convex rib abuts against the confluence (40), the confluence (40) is provided with a fourth convex rib, the fourth convex rib abuts against the shell (10); or The flow divider (30) is provided with a first convex rib (111), the first convex rib (111) abuts against the first end cover (11), the shell (10) is provided with a second convex rib (33), the second convex rib (33) abuts against the flow divider (30); the flow converging device (40) is provided with a third convex rib, the third convex rib abuts against the second end cover (12), the shell (10) is provided with a fourth convex rib, the fourth convex rib abuts against the flow converging device (40).

9. The heat exchanger (100) according to claim 4, characterized in that: The invention also comprises a heat exchange part, wherein the heat exchange part comprises a plurality of heat exchange tubes (20), wherein the plurality of heat exchange tubes (20) are arranged in the shell (10), wherein a plurality of first flow channels (110) separated from each other are formed in the plurality of heat exchange tubes (20), and a plurality of second flow channels (120) separated from each other are formed between the plurality of heat exchange tubes (20) and / or between the plurality of heat exchange tubes (20) and the shell (10).

10. The heat exchanger (100) according to claim 9, characterized in that: A partition plate (133) is provided in the shell (10), the partition plate (133) connects two side walls of the shell (10) in a height direction and separates the internal space of the shell (10) into a plurality of sub-cavities, and the plurality of heat exchange tubes (20) are respectively arranged in the plurality of sub-cavities; and / or The shell (10) comprises a first inner side surface and a second inner side surface which are opposite to each other in the width direction; the first inner side surface is provided with a first positioning groove (105) and the second inner side surface is provided with a second positioning groove (106); one side edge of the heat exchange tube (20) in the width direction is positioned in the first positioning groove (105) and the other side edge is positioned in the second positioning groove (106).

11. The heat exchanger (100) according to claim 9, characterized in that: One end of the heat exchange tube (20) is inserted through the flow divider to match the flow divider; the other end of the heat exchange tube (20) is inserted through the flow combiner to match the flow combiner; and / or The plurality of heat exchange tubes (20) are arranged along a width direction of the heat exchanger (100).

12. The heat exchanger (100) according to claim 9, characterized in that: The flow divider (30) comprises a first flow divider groove (31) and a second flow divider groove (32); one side of the first flow divider groove (31) is connected to the first water inlet (101), and the other side is connected to the plurality of first flow channels (110); one side of the second flow divider groove (32) is connected to the second water inlet (103), and the other side is connected to the plurality of second flow channels (120); The confluence device (40) comprises a first confluence groove (43) and a second confluence groove (44); one side of the first confluence groove (43) is connected to the first water outlet (102), and the other side is connected to the plurality of first flow channels (110); one side of the second confluence groove (44) is connected to the second water outlet (104), and the other side is connected to the plurality of second flow channels (120).

13. The heat exchanger (100) according to claim 12, characterized in that: In the height direction of the shell (10), the second flow dividing groove (32) is arranged on the upper side of the flow divider (30), and the second flow converging groove (44) is arranged on the lower side of the flow converging groove (40).

14. The heat exchanger (100) according to claim 12, characterized in that: The flow divider (30) extends along the width direction of the heat exchanger (100), and the first flow divider groove (31) and the second flow divider groove (32) extend along the width direction of the heat exchanger (100); The flow collector (40) extends along the width direction of the heat exchanger (100), and the first flow collector groove (43) and the second flow collector groove (44) extend along the width direction of the heat exchanger (100).

15. The heat exchanger (100) according to claim 9, characterized in that: The flow divider (30) is provided with a plurality of first grids (34) and a plurality of second grids (35); a plurality of first interfaces (301) separated from each other are formed between the plurality of first grids (34); the plurality of first interfaces (301) are in communication with the first water inlet (101) and the plurality of first flow channels (110); a plurality of second interfaces (302) separated from each other are formed between the plurality of second grids (35); the plurality of second interfaces (302) are in communication with the second water inlet (103) and the plurality of second flow channels (120); The confluence device (40) is provided with a plurality of third grids and a plurality of fourth grids, wherein a plurality of third interfaces separated from each other are formed between the plurality of third grids, and the plurality of third interfaces are in communication with the first water outlet (102) and the plurality of first flow channels (110), and a plurality of fourth interfaces separated from each other are formed between the plurality of fourth grids, and the plurality of fourth interfaces are in communication with the second water outlet (104) and the plurality of second flow channels (120).

16. A dishwasher, characterized in that: include: A heat exchanger (100) according to any one of claims 1 to 15.

17. The dishwasher according to claim 16, characterized in that Also includes: Water tank; The inner tank comprises a washing chamber, the washing chamber is connected to the water tank, the first flow channel (110) is connected to the washing chamber, and the second flow channel (120) is connected to the water tank.

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