Heat exchange device integrated with multiple heat exchange units

Abstract

The utility model belongs to the technical field of heat exchangers, particularly relates to a heat exchange device integrated with multiple heat exchange units, and solves the problem that a micro-channel heat exchanger and an evaporation plate are not connected through a pipeline to form a circulation loop. The heat exchange device integrated with the multiple heat exchange units comprises an evaporation plate and a micro-channel heat exchanger, two collecting pipes of the micro-channel heat exchanger are connected with the evaporation plate through connecting pipes respectively, and a circulation loop used for circulation of heat exchange media is formed between the micro-channel heat exchanger and the evaporation plate. The effects of circulating and continuous heat exchange of the heat exchange medium between the micro-channel heat exchanger and the evaporation plate are achieved, and the heat exchange cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger technology, and specifically relates to a heat exchange device integrating multiple heat exchange units. Background Technology

[0002] A heat exchanger is a device that transfers some of the heat from a hot fluid to a cold fluid. It is also called a heat exchanger and is used to achieve temperature control, such as cooling.

[0003] Heat exchange devices include microchannel heat exchangers and evaporators, which exchange and conduct heat through the flow of heat exchange medium. However, in the existing technology, most heat exchange devices that integrate microchannel heat exchangers and evaporators are set up independently, without forming a circulation loop through connecting pipelines. This makes it impossible to achieve the effect of continuous heat exchange by circulating the heat exchange medium between the microchannel heat exchanger and the evaporator. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a heat exchange device that integrates multiple heat exchange units.

[0005] To achieve the innovative objectives of this utility model, the following technical solutions can be used:

[0006] A heat exchange device integrating multiple heat exchange units includes an evaporator plate and a microchannel heat exchanger. The two manifolds of the microchannel heat exchanger are respectively connected to the evaporator plate through connecting pipes, and a circulation loop for the flow of heat exchange medium is formed between the microchannel heat exchanger and the evaporator plate.

[0007] The heat exchange device of this utility model integrates an evaporator plate and a microchannel heat exchanger. The two manifolds of the microchannel heat exchanger are connected to the evaporator plate, and the circulation loop formed between them is used to circulate the heat exchange medium. After absorbing heat in the evaporator plate, the heat exchange medium flows to one of the manifolds, and then flows through its flat tube to the other manifold. During the flow through the flat tube, the heat exchange medium exchanges heat with the air through the tube wall. After releasing heat, the heat exchange medium enters the other manifold and returns to the evaporator plate through the connecting pipe, realizing the circulation of the heat exchange medium and continuous heat exchange.

[0008] In the aforementioned heat exchange device integrating multiple heat exchange units, the microchannel heat exchanger includes two parallel manifolds and several flat tubes arranged at intervals between the two manifolds. The two manifolds have different lengths, including long tubes and short tubes. Both the long tubes and the short tubes are connected to an evaporator plate, which is located on the side of the microchannel heat exchanger near the short tubes.

[0009] The microchannel heat exchanger has two manifolds arranged in parallel, with a flat tube connecting the manifolds. The microchannels inside the flat tubes are connected to the manifold chambers of the manifolds. This is existing technology. In particular, the two manifolds here have different lengths, with the longer one being the long tube and the shorter one being the short tube. Both ends of the long tube extend beyond the short tube, and the extended portions can be fitted with corresponding connecting tubes to achieve a smooth connection between the long tube and the evaporator plate. In other words, the shorter length of the short tube can be used to make way for the connecting tubes on the long tube.

[0010] In the aforementioned heat exchange device integrating multiple heat exchange units, the connecting pipe includes two sets of side pipes and a set of intermediate pipes located between the two sets of side pipes. One end of the side pipe is connected to the end of the long pipe, and one end of the side pipe is connected to the middle of the short pipe. The other ends of the long pipe and the short pipe are connected to the width side of the evaporator plate near the microchannel heat exchanger.

[0011] The connecting pipe consists of a middle pipe and side pipes. The plane containing the middle pipe and side pipes is perpendicular to the manifold. The side pipes are connected to the longer portions of the shorter pipes at both ends of the long pipe, while the middle pipe is connected to the outside of the short pipe. Furthermore, the other ends of the side pipes and the middle pipes are connected to the same width side of the evaporator plate, which avoids obstructing the heat exchange plate surface of the evaporator plate and also avoids excessive bending of the connecting pipe.

[0012] As an explanation, the orientation mentioned in the text refers to the horizontal arrangement of the microchannel heat exchanger and the vertical arrangement of the evaporator plate. The width side mentioned in the previous paragraph is also the top side of the evaporator plate.

[0013] In the aforementioned heat exchange device integrating multiple heat exchange units, the side tube includes a first connecting section connected to the side of the long tube near the short tube, and a second connecting section connected to the evaporator plate. The first connecting section and the second connecting section are connected by a first transition section. The first connecting section is parallel to the flat tube and its length is adapted to the length of the flat tube. The middle tube includes a third connecting section connected to the side of the short tube away from the long tube, and a fourth connecting section connected to the evaporator plate. The third connecting section and the fourth connecting section are connected by a second transition section. The second transition section is parallel to the first transition section.

[0014] The extension directions of the first and third connecting sections coincide with the plane of the microchannel heat exchanger, while the extension directions of the second and fourth connecting sections coincide with the plane of the evaporator plate. This prevents the connecting sections from protruding from the surface of the corresponding microchannel heat exchanger or evaporator plate, resulting in a smoother overall surface. The first and second transition sections are straight lines, used for the transition between the corresponding connecting sections. The first and second transition sections are arranged in parallel, which helps to improve aesthetics. Of course, the transition sections and connecting sections are smoothly connected by arc-shaped connecting sections.

[0015] In the aforementioned heat exchange device integrating multiple heat exchange units, two side plates located on both sides of the flat tubes are connected between the two manifolds. The side plates have a 90-degree folded edge on the side away from the evaporator plate. Several first connection holes for bolt fixing to the fan assembly are opened on the folded edge. Packaging positioning grooves extending along the arrangement direction of the flat tubes are also opened on the folded edge. Fins are provided between the flat tubes.

[0016] Side plates and side tubes are arranged between two manifolds, with the side plates located on the outermost side to protect the side tubes and ensure good structural strength in the connection between the manifolds. A folded edge is provided on the side plate for connecting the fan assembly. The connecting surface of the fan assembly is in contact with the outer side of the folded edge and is detachably fixed using bolts or other fasteners. Furthermore, the outer side of the folded edge protrudes beyond the line connecting the two manifolds, preventing interference between the connecting surface of the fan assembly and the manifolds. The packaging positioning slot facilitates product packaging and reflow in the furnace.

[0017] In the aforementioned heat exchange device integrating multiple heat exchange units, the evaporator plate is composed of two plate-shaped parts joined together. The two plate-shaped parts are connected by a welding structure and / or bolt structure, forming a flow cavity between them. The connecting pipe communicates with the flow cavity. The plate-shaped parts are provided with flow grooves, and the flow grooves of the two plate-shaped parts correspond to each other to form the flow cavity.

[0018] The evaporation plate is a modular design, consisting of two plate-shaped components, which reduces the difficulty of processing. The opposing surfaces of the two plate-shaped components are provided with flow grooves extending along the thickness direction, and the two grooves are joined together to form a sealed flow cavity.

[0019] In the aforementioned heat exchange device integrating multiple heat exchange units, the flow groove is U-shaped and includes two side grooves located on both sides, with the bottoms of the two side grooves connected by a connecting groove; the connecting pipe includes two side pipes and a middle pipe located between the two side pipes, with the middle pipe connected to the connecting groove, and the side pipes connected to the top side of the side grooves away from the connecting groove.

[0020] The connecting groove is mainly composed of two side grooves. The connecting groove connects the two side grooves from the bottom side. The side pipe is connected to the top side of the side groove, and the middle pipe is connected to the connecting groove, so that the heat exchange medium can effectively circulate between the top and bottom sides.

[0021] In the aforementioned heat exchange device integrating multiple heat exchange units, the plate-shaped split is provided with a first slot communicating with the top side of the side slot and a second slot communicating with the top side of the connecting slot on the width side near the microchannel heat exchanger. The two first slots are joined together to form a first insertion hole for inserting a side tube, and the two second slots are joined together to form a second insertion hole for inserting a middle tube. The two side slots are separated by a strip-shaped extension protrusion. One end of the extension protrusion is connected to the top side of the flow groove, and the other end forms the connecting slot with the bottom side of the flow groove. The second slot penetrates the extension protrusion.

[0022] Both the first and second slots are semi-circular, and the two slots are joined together to form a circular insertion hole, ensuring smooth connection of the connecting pipe. The extension protrusion extends from the middle of the top side of the flow groove to the bottom side, but does not connect with the bottom side. The gap between them forms the connecting groove. The second slot is set on the top side of the plate-shaped split body and the extension protrusion, so that the middle pipe can pass directly through the connecting groove.

[0023] In the aforementioned heat exchange device integrating multiple heat exchange units, the side groove is provided with a plurality of spaced-apart guide protrusions. The end faces of the guide protrusions of two plate-shaped components are in contact with each other and correspond one-to-one. The guide protrusions are parallel to the extension protrusions, and the two ends of the guide protrusions are not in contact with the inner side of the flow groove. The plate-shaped components are provided with a second connecting hole. The second connecting hole extends along the thickness direction of the evaporation plate. The second connecting hole is provided on the plate-shaped components outside the flow groove, and / or on the connecting protrusions inside the flow groove. The end faces of the connecting protrusions of two plate-shaped components are in contact with each other and correspond one-to-one. The second connecting holes of two plate-shaped components correspond one-to-one.

[0024] The guide protrusions direct the flow of the heat exchange medium and increase the contact area with it, thus improving heat exchange efficiency. The second connecting hole is used to install components such as bolts, enabling connection and fixation between two spliced ​​components or between the evaporator plate and the corresponding mounting surface. This connection also offers flexible detachability. The second connecting holes can be distributed on the plate-shaped component outside the flow groove and on the connecting protrusion inside the flow groove, ensuring a stable connection and reducing the possibility of bulging.

[0025] In the aforementioned heat exchange device integrating multiple heat exchange units, a fan assembly is connected to the microchannel heat exchanger. The direction of action of the fan assembly is perpendicular to the thickness direction of the microchannel heat exchanger, and the evaporator plate is away from the direction of action of the fan assembly. The angle between the evaporator plate and the microchannel heat exchanger is greater than or equal to 90 degrees. At least one of the connecting pipes is provided with a refrigerant charging port.

[0026] The fan assembly is located on the side of the microchannel heat exchanger furthest from the evaporator plate, which increases the airflow velocity between the flat tubes, improving heat exchange efficiency. Furthermore, the evaporator plate is positioned outside the direction of the fan assembly's action, reducing air obstruction. The refrigerant charging port on the connecting pipe is used for the delivery of the heat exchange medium.

[0027] Compared with the prior art, the present invention has the following main advantages:

[0028] 1. This heat exchange device integrates an evaporator plate and a microchannel heat exchanger. The two manifolds of the microchannel heat exchanger are connected to the evaporator plate, and the circulation loop formed between them is used to circulate the heat exchange medium. After absorbing heat in the evaporator plate, the heat exchange medium flows to one of the manifolds, and then flows through its flat tube to the other manifold. During the flow through the flat tube, the heat exchange medium exchanges heat with the air through the tube wall. After releasing heat, the heat exchange medium enters the other manifold and returns to the evaporator plate through the connecting pipe, realizing the circulation of the heat exchange medium and continuous heat exchange.

[0029] 2. The two manifolds are of different lengths, with both ends of the longer manifold extending beyond the shorter manifold. This extended portion can be fitted with a corresponding connecting pipe to facilitate a smooth connection between the longer manifold and the evaporator plate. In other words, the shorter length of the shorter manifold can be used to make way for the connecting pipe on the longer manifold.

[0030] 3. The extension directions of the first and third connecting sections coincide with the plane of the microchannel heat exchanger, and the extension directions of the second and fourth connecting sections coincide with the plane of the evaporator plate. This prevents the connecting sections from protruding from the corresponding microchannel heat exchanger or evaporator plate surface, making the overall surface flatter. The parallel arrangement of the first and second transition sections also helps to increase aesthetics.

[0031] 4. A folded edge is provided on the side plate, which can be used to connect the fan assembly, and the packaging positioning slot can facilitate the packaging of products for passing through the furnace.

[0032] 5. The evaporator plate is a modular design, consisting of two separate plate-shaped parts, which reduces the difficulty of processing.

[0033] 6. The connecting groove is mainly composed of two side grooves. The connecting groove connects the two side grooves from the bottom side. The side pipe is connected to the top side of the side groove, and the middle pipe is connected to the connecting groove, so that the heat exchange medium can effectively circulate between the top and bottom sides. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure provided by this utility model;

[0035] Figure 2 This is a schematic diagram of the plate-shaped split structure provided by this utility model;

[0036] Figure 3This is a schematic diagram of the side plate provided by this utility model.

[0037] In the figure, evaporator plate 1, microchannel heat exchanger 2, manifold 3, connecting pipe 4, flat pipe 5, long pipe 6, short pipe 7, side pipe 8, middle pipe 9, first connecting section 10, second connecting section 11, first transition section 12, third connecting section 13, fourth connecting section 14, second transition section 15, side plate 16, folded edge 17, first connecting hole 18, packaging positioning groove 19, plate-shaped split body 20, flow groove 21, side groove 22, connecting groove 23, first slot 24, second slot 25, first insertion hole 26, second insertion hole 27, extension protrusion 28, flow guiding protrusion 29, second connecting hole 30, connecting boss 31, refrigerant charging port 32. Detailed Implementation

[0038] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0039] Specific implementation examples Figure 1-3 As shown, the heat exchange device integrated with multiple heat exchange units includes an evaporator plate 1 and a microchannel heat exchanger 2 arranged at a 90-degree angle. The two manifolds 3 of the microchannel heat exchanger 2 are connected to the evaporator plate 1 through connecting pipes 4, and a circulation loop for the flow of heat exchange medium is formed between the microchannel heat exchanger 2 and the evaporator plate 1.

[0040] Specifically, this heat exchange device integrates an evaporator plate 1 and a microchannel heat exchanger 2. The two manifolds 3 of the microchannel heat exchanger 2 are connected to the evaporator plate 1, and the circulation loop formed between them is used to circulate the heat exchange medium. After absorbing heat in the evaporator plate 1, the heat exchange medium flows to one of the manifolds 3, and then flows through its flat tube 5 to the other manifold 3. During the flow through the flat tube 5, the heat exchange medium exchanges heat with the air through the tube wall. After releasing heat, the heat exchange medium enters the other manifold 3 and returns to the evaporator plate 1 through the connecting pipe 4, so as to realize the circulation and continuous heat exchange of the heat exchange medium.

[0041] like Figure 1 , 3As shown, the microchannel heat exchanger 2 includes two parallel manifolds 3 and several flat tubes 5 arranged at intervals between the two manifolds 3. Fins are provided between the flat tubes 5. The two manifolds 3 have different lengths, including a long tube 6 and a short tube 7. The evaporator plate 1 is located on the side of the microchannel heat exchanger 2 near the short tube 7. The connecting pipe 4 includes two sets of side tubes 8 and a set of intermediate tubes 9 located between the two sets of side tubes 8. One of the side tubes 8 is provided with a refrigerant charging port 32. One end of the side tube 8 is connected to the end of the long tube 6, and one end of the side tube 8 is connected to the middle of the short tube 7. The other ends of the long tube 6 and the short tube 7 are connected to the width side of the evaporator plate 1 near the microchannel heat exchanger 2. Two side plates 16 are connected between the two manifolds 3 and located on both sides of the flat tube 5. The side plate 16 has a 90-degree folded edge 17 on the side away from the evaporator plate 1. Several first connection holes 18 are opened on the folded edge 17. The fan assembly is installed on the folded edge 17. A packaging positioning groove 19 extending along the arrangement direction of the flat tube 5 is also opened on the folded edge 17.

[0042] Specifically, the two manifolds 3 of the microchannel heat exchanger 2 are arranged in parallel, and a flat tube 5 is connected between the manifolds 3. The microchannels inside the flat tube 5 are connected to the collection chambers of the manifolds 3. In particular, the two manifolds 3 are of different lengths, with the longer one being the long tube 6 and the shorter one being the short tube 7. Both ends of the long tube 6 extend beyond the short tube 7, and the extended portions can be fitted with corresponding connecting tubes 4 to achieve a smooth connection between the long tube 6 and the evaporator plate 1. In other words, the shorter length of the short tube 7 can make way for the connecting tube 4 on the long tube 6. The connecting tube 4 consists of a middle tube 9 and a side tube 8. The plane containing the middle tube 9 and the side tube 8 is perpendicular to the manifolds 3. The side tube 8 is connected to the extended portions of the long tube 6 that extend beyond the short tube 7, while the middle tube 9 is connected to the outside of the short tube 7. Moreover, the other ends of the side tube 8 and the middle tube 9 are connected to the same width side of the evaporator plate 1, avoiding obstruction of the heat exchange plate surface of the evaporator plate 1 and avoiding excessive bending of the connecting tube 4. Side plate 16 and side tube 8 are arranged between two manifolds 3, with side plate 16 located on the outermost side to protect the side tube 8 and provide good structural strength for the connection between the manifolds 3. A folded edge 17 is provided on side plate 16 for connecting the fan assembly. The connecting surface of the fan assembly is in contact with the outer surface of the folded edge 17 and is detachably fixed using bolts or other fasteners. Furthermore, the outer surface of the folded edge 17 protrudes beyond the line connecting the two manifolds 3, preventing interference between the connecting surface of the fan assembly and the manifolds 3. The packaging positioning groove 19 facilitates product packaging and furnace transfer.

[0043] As an optimization of this embodiment, the side tube 8 includes a first connecting section 10 connected to the side of the long tube 6 near the short tube 7, and a second connecting section 11 connected to the evaporating plate 1. The first connecting section 10 and the second connecting section 11 are connected by a first transition section 12. The first connecting section 10 is parallel to the flat tube 5 and its length is adapted to the length of the flat tube 5. The middle tube 9 includes a third connecting section 13 connected to the side of the short tube 7 away from the long tube 6, and a fourth connecting section 14 connected to the evaporating plate 1. The third connecting section 13 and the fourth connecting section 14 are connected by a second transition section 15. The second transition section 15 is parallel to the first transition section 12.

[0044] Specifically, the extension directions of the first connecting segment 10 and the third connecting segment 13 coincide with the plane of the microchannel heat exchanger 2, and the extension directions of the second connecting segment 11 and the fourth connecting segment 14 coincide with the plane of the evaporator plate 1. This prevents the connecting segments from protruding from the corresponding microchannel heat exchanger 2 or evaporator plate 1, making the overall surface flatter. The first transition segment 12 and the second transition segment 15 are straight lines, used for the connection and transition between the corresponding connecting segments. The first transition segment 12 and the second transition segment 15 are arranged in parallel, which helps to increase aesthetics. Of course, the transition segments and connecting segments are smoothly connected by arc-shaped connecting segments.

[0045] like Figure 1 , 2 As shown, the evaporator plate 1 is composed of two plate-shaped parts 20 joined together. The two plate-shaped parts 20 are connected by a welding structure and a bolt structure, forming a flow cavity between them. The connecting pipe 4 communicates with the flow cavity. The plate-shaped parts 20 are provided with flow grooves 21, and the flow grooves 21 of the two plate-shaped parts 20 correspond to each other to form a flow cavity. The flow grooves 21 are U-shaped and include two side grooves 22 located on both sides. The bottoms of the two side grooves 22 are connected by a connecting groove 23. The middle pipe 9 communicates with the connecting groove 23, and the side pipes 8 communicate with the top side of the side grooves 22 away from the connecting groove 23. The plate-shaped split body 20 has a first slot 24 communicating with the top side of the side slot 22 and a second slot 25 communicating with the top side of the connecting slot 23 on the width side near the microchannel heat exchanger 2. The two first slots 24 are joined together to form a first insertion hole 26 for inserting the side tube 8, and the two second slots 25 are joined together to form a second insertion hole 27 for inserting the middle tube 9. The two side slots 22 are separated by a strip-shaped extension protrusion 28. One end of the extension protrusion 28 is connected to the top side of the flow groove 21, and the other end forms a connecting slot 23 between the extension protrusion 28 and the bottom side of the flow groove 21. The second slot 25 penetrates the extension protrusion 28.

[0046] Specifically, the evaporator plate 1 is a spliced ​​type, composed of two plate-shaped parts 20, reducing processing difficulty. Flow grooves 21 extending along the thickness direction are provided on the opposite surfaces of the two plate-shaped parts 20, and the two grooves are spliced ​​to form a sealed flow cavity. The connecting groove 21 mainly consists of two side grooves 22, and a connecting groove 23 connects the two side grooves 22 from the bottom side. The side pipe 8 is connected to the top side of the side groove 22, and the middle pipe 9 is connected to the connecting groove 23, allowing the heat exchange medium to effectively circulate between the top and bottom sides. The first slot 24 and the second slot 25 are both semi-circular, and the two slots are joined to form a circular insertion hole, ensuring smooth connection of the connecting pipe 4. The extending protrusion 28 extends from the middle of the top side of the flow groove 21 to the bottom side, but does not connect to the bottom side; the gap between them forms the connecting groove 23. The second slot 25 is located on the top side of the plate-shaped part 20 and on the extending protrusion 28, allowing the middle pipe 9 to pass directly through the connecting groove 23.

[0047] As an optimization of this embodiment, the side groove 22 is provided with a plurality of spaced-apart guide protrusions 29. The end faces of the guide protrusions 29 of the two plate-shaped parts 20 are in contact with each other and correspond one-to-one. The guide protrusions 29 are parallel to the extension protrusions 28. The two ends of the guide protrusions 29 are not in contact with the inner side of the flow groove 21. The plate-shaped parts 20 are provided with a second connecting hole 30. The second connecting hole 30 extends along the thickness direction of the evaporation plate 1. The second connecting hole 30 is provided on the plate-shaped parts 20 outside the flow groove 21 and on the connecting boss 31 inside the flow groove 21. The end faces of the connecting bosses 31 of the two plate-shaped parts 20 are in contact with each other and correspond one-to-one. The second connecting holes 30 of the two plate-shaped parts 20 correspond one-to-one.

[0048] Specifically, the guide protrusion 29 guides the flow of the heat exchange medium and increases the contact area with the medium, which helps improve heat exchange efficiency. Gaps exist between the two ends of the guide protrusion 29 and the inner wall of the flow groove 21 to ensure smooth fluid flow. Second connection holes 30 are distributed on the plate-shaped split 20 outside the flow groove 21 and on the connecting protrusion 31 inside the flow groove 21, ensuring a stable connection and reducing the possibility of bulging.

[0049] Specific working principle: In this embodiment, the microchannel heat exchanger 2 is horizontally arranged, and the evaporator plate 1 is vertically arranged and located below the microchannel heat exchanger 2. A heat exchange medium flows in the circulation loop between the evaporator plate 1 and the microchannel heat exchanger 2. On the evaporator plate 1 side, the heat exchange medium absorbs external heat through the plate wall of the evaporator plate 1. Due to the thermosiphon effect, the heated heat exchange medium moves upward, flows through the side pipe 8 to the short pipe 7, and then splits into each flat pipe 5. It releases heat by exchanging heat with the air through the pipe wall of the flat pipe 5. The cooled heat exchange medium enters the long pipe 6 and flows back to the evaporator plate 1 through the middle pipe 9. It flows in from the connecting groove 23 on the bottom side of the flow cavity, and then the heat exchange medium absorbs heat and flows to the top side through the guide protrusion 29 to achieve circulation.

[0050] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A heat exchange device integrating multiple heat exchange units, characterized in that, It includes an evaporator plate (1) and a microchannel heat exchanger (2). The two manifolds (3) of the microchannel heat exchanger (2) are connected to the evaporator plate (1) through connecting pipes (4). A circulation loop for the flow of heat exchange medium is formed between the microchannel heat exchanger (2) and the evaporator plate (1).

2. The heat exchange device integrating multiple heat exchange units according to claim 1, characterized in that, The microchannel heat exchanger (2) includes two parallel manifolds (3) and several flat tubes (5) connected between the two manifolds (3) and arranged at intervals. The two manifolds (3) have different lengths, including a long tube (6) and a short tube (7). The long tube (6) and the short tube (7) are both connected to the evaporator plate (1). The evaporator plate (1) is located on the side of the microchannel heat exchanger (2) near the short tube (7).

3. The heat exchange device integrating multiple heat exchange units according to claim 2, characterized in that, The connecting pipe (4) includes two sets of side pipes (8) and a set of intermediate pipes (9) located between the two sets of side pipes (8). One end of the side pipe (8) is connected to the end of the long pipe (6), and one end of the side pipe (8) is connected to the middle of the short pipe (7). The other ends of the long pipe (6) and the short pipe (7) are connected to the width side of the evaporator plate (1) near the microchannel heat exchanger (2).

4. The heat exchange device integrating multiple heat exchange units according to claim 3, characterized in that, The side tube (8) includes a first connecting section (10) connected to the side of the long tube (6) near the short tube (7), and a second connecting section (11) connected to the evaporation plate (1). The first connecting section (10) and the second connecting section (11) are connected by a first transition section (12). The first connecting section (10) is parallel to the flat tube (5) and its length is adapted to the length of the flat tube (5). The intermediate tube (9) includes a third connecting section (13) connected to the side of the short tube (7) away from the long tube (6), and a fourth connecting section (14) connected to the evaporation plate (1). The third connecting section (13) and the fourth connecting section (14) are connected by a second transition section (15), which is parallel to the first transition section (12).

5. The heat exchange device integrating multiple heat exchange units according to claim 2, characterized in that, Two side plates (16) located on both sides of the flat tube (5) are connected between the two manifolds (3). The side plates (16) have a 90-degree folded edge (17) on the side away from the evaporator plate (1). The folded edge (17) has several first connection holes (18) for bolt fixing to the fan assembly. The folded edge (17) also has a packing positioning groove (19) extending along the arrangement direction of the flat tube (5). Fins are provided between the flat tubes (5).

6. The heat exchange device integrating multiple heat exchange units according to claim 1, characterized in that, The evaporation plate (1) is composed of two plate-shaped parts (20) joined together. The two plate-shaped parts (20) are connected by a welding structure and / or bolt structure, forming a flow cavity between them. The connecting pipe (4) is connected to the flow cavity. The plate-shaped parts (20) are provided with flow grooves (21). The flow grooves (21) of the two plate-shaped parts (20) correspond to each other and are joined together to form the flow cavity.

7. The heat exchange device integrating multiple heat exchange units according to claim 6, characterized in that, The flow groove (21) is U-shaped and includes two side grooves (22) located on both sides. The bottoms of the two side grooves (22) are connected by a connecting groove (23). The connecting pipe (4) includes two side pipes (8) and a middle pipe (9) located between the two side pipes (8). The middle pipe (9) is connected to the connecting groove (23), and the side pipes (8) are connected to the top side of the side groove (22) away from the connecting groove (23).

8. The heat exchange device integrating multiple heat exchange units according to claim 7, characterized in that, The plate-shaped split (20) has a first slot (24) communicating with the top side of the side slot (22) and a second slot (25) communicating with the top side of the connecting slot (23) on the width side near the microchannel heat exchanger (2). The two first slots (24) are joined together to form a first insertion hole (26) for inserting the side tube (8), and the two second slots (25) are joined together to form a second insertion hole (27) for inserting the middle tube (9). The two side grooves (22) are separated by a strip-shaped extension protrusion (28). One end of the extension protrusion (28) is connected to the top side of the flow groove (21), and the other end forms the connecting groove (23) between the flow groove (21) and the bottom side of the flow groove (21). The second groove (25) passes through the extension protrusion (28).

9. The heat exchange device integrating multiple heat exchange units according to claim 8, characterized in that, The side groove (22) is provided with a number of spaced-apart guide protrusions (29), and the end faces of the guide protrusions (29) of the two plate-shaped split bodies (20) are in contact with each other and correspond one-to-one. The guide protrusions (29) are parallel to the extension protrusions (28). The plate-shaped sub-body (20) is provided with a second connecting hole (30). The second connecting hole (30) extends along the thickness direction of the evaporation plate (1). The second connecting hole (30) is provided on the plate-shaped sub-body (20) outside the flow groove (21) and / or on the connecting boss (31) inside the flow groove (21). The end faces of the connecting bosses (31) of the two plate-shaped sub-body (20) are in contact with each other and correspond one-to-one. The second connecting holes (30) of the two plate-shaped sub-body (20) correspond one-to-one.

10. The heat exchange device integrating multiple heat exchange units according to any one of claims 1-9, characterized in that, The microchannel heat exchanger (2) is connected to a fan assembly, the direction of action of the fan assembly is perpendicular to the thickness direction of the microchannel heat exchanger (2), and the evaporator plate (1) is away from the direction of action of the fan assembly; the angle between the evaporator plate (1) and the microchannel heat exchanger (2) is greater than or equal to 90 degrees; at least one of the connecting pipes (4) is provided with a refrigerant charging port (32).

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