Integrated heat exchanger and heat pump system

Abstract

The invention relates to the technical field of heat management systems, in particular to an integrated heat exchanger and a heat pump system. The integrated heat exchanger comprises a plurality of heat exchange units which are arranged in a stacked mode. Each heat exchange unit comprises an upper-layer flow channel and a lower-layer flow channel which are arranged in the stacking direction. Each of the upper-layer flow channel and the lower-layer flow channel comprises a first edge heat exchange area, a middle heat exchange area and a second edge heat exchange area; the corresponding first edge heat exchange areas correspondingly achieve heat exchange, the corresponding middle heat exchange areas correspondingly achieve heat exchange, and the corresponding second edge heat exchange areas correspondingly achieve heat exchange. The first one of the first edge heat exchange area and the second edge heat exchange area is communicated with the middle heat exchange area; a medium can flow in from the first one of the first heat exchange area and the middle heat exchange area and flow out from the second one of the first heat exchange area and the middle heat exchange area; the second one of the first edge heat exchange area and the second edge heat exchange area is isolated from the middle heat exchange area; medium can flow in and out from the second part. The integrated heat exchanger is small in occupied space.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal management systems, and in particular to an integrated heat exchanger and heat pump system. Background Art

[0002] In an indirect heat pump system, the refrigerant absorbs and releases heat through the heat pump cycle, but is separated from the part that directly contacts the medium that needs to be heated or cooled (such as air or water). This means that there is an intermediate medium, usually water or other liquid, between the refrigerant cycle and the medium that needs to be temperature-controlled to transfer heat. The advantages of this design include improving the safety of the system. Usually, a heat pump system includes multiple heat exchangers such as an evaporator, a condenser, a subcooler, and an intermediate heat exchanger. It is necessary to set up a large number of connecting pipes to connect multiple heat exchangers according to needs. The structure of the entire heat pump system is complex and occupies a large space. Summary of the invention

[0003] The object of the present invention is to provide an integrated heat exchanger and a heat pump system, so as to solve the technical problems of the heat pump system in the prior art, such as the complex structure and large space occupied, to a certain extent.

[0004] The present invention provides an integrated heat exchanger, comprising: a heat exchange core, comprising a plurality of stacked heat exchange units; the heat exchange units comprise an upper flow channel and a lower flow channel arranged along a stacking direction; the upper flow channel and the lower flow channel both comprise a first edge heat exchange zone, a middle heat exchange zone and a second edge heat exchange zone; the first edge heat exchange zones of the upper and lower layers realize heat exchange correspondingly, the middle heat exchange zones of the upper and lower layers realize heat exchange correspondingly, and the second edge heat exchange zones of the upper and lower layers realize heat exchange correspondingly; the first edge heat exchange zone and the second edge heat exchange zone are connected to the middle heat exchange zone; a medium can flow in from the first of the first and the middle heat exchange zones and flow out from the second of the first and the middle heat exchange zones; the second of the first edge heat exchange zone and the second edge heat exchange zone is isolated from the middle heat exchange zone; a medium can flow in and out from the second.

[0005] Multiple heat exchange zones are formed in the same flow channel, which can achieve different heat exchange functions and heat exchange purposes. Compared with the related art that sets multiple independent heat exchangers to achieve different heat exchange functions, the integrated heat exchanger provided in this embodiment is more obviously compact in structure, reduces connecting pipes, and occupies less space. The integration provided in this embodiment is a high degree of integration of the heat exchanger, which can better meet the requirements of integration and miniaturization of heat exchange devices. When the integrated heat exchanger is used in a heat pump system, the heat pump system can be compact in structure, occupy less space, and have a high degree of integration. Moreover, the first of the first edge heat exchange zone and the second edge heat exchange zone is connected to the middle heat exchange zone, and the first of each layer of the heat exchange core is connected to the middle heat exchange zone. The medium can flow directly between the first and the middle heat exchange zone to directly achieve different heat exchange purposes. The medium does not need to flow through an entire heat exchanger before flowing into another heat exchanger, which not only saves the flow path and time, but also can further save connecting pipes, further reduce the occupied space, and further improve the degree of integration.

[0006] Furthermore, for the flow channels at the same layer, different media flow through the first edge heat exchange area and the second edge heat exchange area; for the flow channels at different layers, different media flow through the two first edge heat exchange areas and different media flow through the two second edge heat exchange areas.

[0007] Furthermore, the upper flow channel includes an upper first edge heat exchange zone, an upper middle heat exchange zone, and an upper second edge heat exchange zone; the lower flow channel includes a lower first edge heat exchange zone, a lower middle heat exchange zone, and a lower second edge heat exchange zone; the number of the upper middle heat exchange zones is one more than the number of the lower middle heat exchange zones; there are two different upper middle heat exchange zones corresponding to the same lower middle heat exchange zone and are respectively connected to the upper first edge heat exchange zone and the upper second edge heat exchange zone.

[0008] Furthermore, the number of the upper intermediate heat exchange zones is two, one is the first upper intermediate heat exchange zone, and the other is the second upper intermediate heat exchange zone, the first upper intermediate heat exchange zone and the second upper intermediate heat exchange zone are isolated from each other, the first upper intermediate heat exchange zone is connected to the upper first edge heat exchange zone, and the second upper intermediate heat exchange zone is connected to the upper second edge heat exchange zone; the number of the lower intermediate heat exchange zone is one, and the lower intermediate heat exchange zone is connected to the lower first edge heat exchange zone.

[0009] Furthermore, the integrated heat exchanger also includes: a first fluid input channel, a first fluid output channel, a second fluid input channel, and a second fluid output channel; the first fluid input channel is connected to the first edge heat exchange zone of the lower layer, and the first fluid output channel is connected to the middle heat exchange zone of the lower layer; the second fluid input channel is connected to the second edge heat exchange zone of the upper layer, and the second fluid output channel is connected to the second middle heat exchange zone of the upper layer; a first medium input channel, a first medium output channel, a second medium input channel, and a second medium output channel; the first medium input channel is connected to the first middle heat exchange zone of the upper layer, and the first medium output channel is connected to the first edge heat exchange zone of the upper layer; the second medium input channel and the second medium output channel are both connected to the second edge heat exchange zone of the lower layer.

[0010] As an optional scheme, along the length direction of the heat exchange unit, the first upper intermediate heat exchange zone and the second upper intermediate heat exchange zone are located between the upper first edge heat exchange zone and the upper second edge heat exchange zone; along the width direction of the heat exchange unit, the first upper intermediate heat exchange zone and the second upper intermediate heat exchange zone are arranged side by side; along the length direction of the heat exchange unit, the lower intermediate heat exchange zone is arranged between the lower first edge heat exchange zone and the lower second edge heat exchange zone.

[0011] As an optional scheme, along the length direction of the heat exchange unit, the upper first edge heat exchange zone, the first upper middle heat exchange zone, the second upper middle heat exchange zone and the upper second edge heat exchange zone are arranged in sequence; along the length direction of the heat exchange unit, the lower first edge heat exchange zone, the lower middle heat exchange zone and the lower second edge heat exchange zone are arranged in sequence.

[0012] Furthermore, a guide strip is provided in the lower intermediate heat exchange zone to form at least an S-shaped flow path.

[0013] Furthermore, the heat exchange unit comprises three plates stacked in sequence, wherein two adjacent plates each form a flow channel; a plate flange is provided around the plate, and the plate flange of the next layer is welded to the plate flange of the upper layer;

[0014] A plurality of separation holes are provided on the plate, and the plurality of separation holes separate the flow channel into the first edge heat exchange zone, the middle heat exchange zone and the second edge heat exchange zone; hole flanges are provided at the edges of the separation holes, and the direction of the hole flanges is the same as that of the plate flanges; the hole flanges of the next layer of the plate are inserted into the corresponding separation holes of the previous layer of the plate and are welded to the corresponding hole flanges.

[0015] The present invention provides a heat pump system, comprising the above-mentioned integrated heat exchanger.

[0016] As an optional solution, the first edge heat exchange zone is a condensation zone, and the second edge heat exchange zone is an evaporation zone.

[0017] It should be understood that both the foregoing general description and the following specific embodiments are for the purpose of example and illustration and do not necessarily limit the present disclosure. The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate the subject matter of the present disclosure. At the same time, the specification and the drawings are used to explain the principles of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of an integrated heat exchanger from a first perspective according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 A schematic structural diagram of the integrated heat exchanger from a second perspective shown;

[0021] Figure 3 for Figure 1 A partially exploded view of the integrated heat exchanger shown in a first perspective;

[0022] Figure 4 for Figure 1 A partially exploded view of the integrated heat exchanger from a second perspective;

[0023] Figure 5 for Figure 1 A schematic diagram of the structure of a plate in the integrated heat exchanger shown;

[0024] Figure 6 for Figure 1 A schematic diagram of the structure of another plate in the integrated heat exchanger shown.

[0025] icon:

[0026] 1-heat exchange core; 101-upper first edge heat exchange zone; 102-upper second edge heat exchange zone; 103-upper first intermediate heat exchange zone; 104-upper second intermediate heat exchange zone; 105-lower first edge heat exchange zone; 106-lower second edge heat exchange zone; 107-lower intermediate heat exchange zone; 108-first fluid input channel; 109-first fluid output channel; 110-second fluid input channel; 111-second fluid output channel; 112-first medium input channel; 113-first medium output channel; 114-second medium input channel; 115-second medium output channel; 116-partition hole; 117-hole flange; 118-plate flange; 119-partitioning piece;

[0027] 2-first fluid input interface; 3-first fluid output interface; 4-second fluid input interface; 5-second fluid output interface; 6-first medium input interface; 7-first medium output interface; 8-second medium input interface; 9-second medium output interface; 10-upper cover plate; 11-lower cover plate. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0030] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] like Figures 1 to 6 As shown, an embodiment of the present invention provides an integrated heat exchanger, including a heat exchange core 1, including a plurality of stacked heat exchange units, the stacking direction of the plurality of heat exchange units can be understood as the height direction of the heat exchange core 1; the heat exchange unit includes an upper flow channel and a lower flow channel arranged along the stacking direction; the upper flow channel and the lower flow channel both include a first edge heat exchange zone, an intermediate heat exchange zone, and a second edge heat exchange zone; the first edge heat exchange zones corresponding to the upper flow channel and the lower flow channel correspond to heat exchange (that is, the media in the first edge heat exchange zones of the upper flow channel and the lower flow channel correspond to heat exchange), and the intermediate heat exchange zones corresponding to the upper flow channel and the lower flow channel correspond to heat exchange Heat (that is, the media in the middle heat exchange zone of the upper flow channel and the lower flow channel exchange heat correspondingly), the second edge heat exchange zone corresponding to the upper flow channel and the lower flow channel exchanges heat correspondingly (that is, the media in the second edge heat exchange zone of the upper flow channel and the lower flow channel exchange heat correspondingly); the first of the first edge heat exchange zone and the second edge heat exchange zone is connected to the middle heat exchange zone; the medium can flow into the first of the first and the middle heat exchange zone and flow out of the second of the first and the middle heat exchange zone; the second of the first edge heat exchange zone and the middle heat exchange zone is isolated from the middle heat exchange zone; the medium can flow in and out of the second.

[0035] It should be noted that, for the entire integrated heat exchanger, a plurality of heat exchange units are provided along the height direction of the integrated heat exchanger, and the lower flow channel in the heat exchange unit located in the upper layer is close to the upper flow channel in the heat exchange unit in the lower layer. It can be understood that the first edge heat exchange zone in the heat exchange unit located in the lower layer can exchange heat not only with the first edge heat exchange zone of the lower layer of the heat exchange unit, but also with the first edge heat exchange zone of the lower layer of the heat exchange unit in the upper layer; similarly, the second edge heat exchange zone in the heat exchange unit located in the lower layer can exchange heat not only with the second edge heat exchange zone of the lower layer of the heat exchange unit, but also with the second edge heat exchange zone of the lower layer of the heat exchange unit in the upper layer. In other words, for the entire integrated heat exchanger, the heat exchange zone can exchange heat with the corresponding heat exchange zones in the upper and lower layers.

[0036] It should be noted that the heat exchange unit may include only two layers of flow channels, one layer is the upper flow channel, and the other layer is the lower flow channel. The heat exchange unit may also include an intermediate flow channel, which is arranged between the upper flow channel and the lower flow channel; the heat exchange unit may also include an outer flow channel, an outer flow channel is arranged on the outer side of the upper flow channel (the side away from the lower flow channel), or an outer flow channel is arranged on the outer side of the lower flow channel (the side away from the upper flow channel), or an outer flow channel is arranged on the outer side of the upper flow channel and the outer side of the lower flow channel. The structure of the intermediate flow channel and the outer flow channel can be set as the flow channel structure as needed. The intermediate flow channel and the outer flow channel can also have the same structure as one of the upper flow channel and the lower flow channel, and the same heat exchange area is connected accordingly. This is just an example, and more variations can be made based on the embodiments of the present invention, which will not be repeated here.

[0037] It should be noted that the first and the second do not indicate an order, but only indicate one of the two and the other. The first and the second do not indicate an order, but only indicate one of the two and the other.

[0038] The first of the first edge heat exchange zone and the second edge heat exchange zone is connected to the intermediate heat exchange zone, and the second of the first edge heat exchange zone and the second edge heat exchange zone is isolated from the intermediate heat exchange zone. It can be that: the intermediate heat exchange zone is connected to the first edge heat exchange zone and isolated from the second edge heat exchange zone; or, the intermediate heat exchange zone is connected to the second edge heat exchange zone and isolated from the first edge heat exchange zone.

[0039] The medium can flow into the first one of the first and the intermediate heat exchange zone and flow out of the second one of the first and the intermediate heat exchange zone. It can be: the medium can flow into the first one and flow out of the intermediate heat exchange zone; or the medium flows into the intermediate heat exchange zone and flows out of the first one.

[0040] In this embodiment, multiple heat exchange zones are formed in the same flow channel, which can achieve different heat exchange functions and heat exchange purposes. Compared with the related art that multiple independent heat exchangers are set to achieve different heat exchange functions, the integrated heat exchanger provided in this embodiment is more obviously compact in structure, reduces connecting pipes, and occupies less space. The integration provided in this embodiment is a high degree of integration of the heat exchanger, which can better meet the requirements for integration and miniaturization of heat exchange devices. When the integrated heat exchanger is used in a heat pump system, the heat pump system can be compact in structure, occupy less space, and have a high degree of integration. Moreover, the first of the first edge heat exchange zone and the second edge heat exchange zone is connected to the middle heat exchange zone, and the first of each layer of the heat exchange core 1 is connected to the middle heat exchange zone. The medium can flow directly between the first and the middle heat exchange zone to directly achieve different heat exchange purposes. The medium does not need to flow through an entire heat exchanger before flowing into another heat exchanger, which not only saves the flow path and time, but also can further save connecting pipes, further reduce the occupied space, and further improve the degree of integration.

[0041] For ease of understanding, the "upper" and "lower" in the upper flow channel and the lower flow channel are only for distinguishing the two layers of flow channels, rather than limiting the orientation), accordingly: the first edge heat exchange zone of the upper flow channel is the upper first edge heat exchange zone 101, the middle heat exchange zone of the upper flow channel is the upper middle heat exchange zone, and the second edge heat exchange zone of the upper flow channel is the upper second edge heat exchange zone 102; the first edge heat exchange zone of the lower flow channel is the lower first edge heat exchange zone 105, the middle heat exchange zone of the lower flow channel is the lower middle heat exchange zone 107, and the second edge heat exchange zone of the lower flow channel is the lower second edge heat exchange zone 106.

[0042] It can be understood that for the entire integrated heat exchanger, the multiple heat exchange units include multiple upper first edge heat exchange areas 101, upper middle heat exchange areas, upper second edge heat exchange areas 102, lower first edge heat exchange areas 105, lower middle heat exchange areas 107, and lower second edge heat exchange areas 106. The multiple upper first edge heat exchange areas 101 are connected in sequence, the multiple upper middle heat exchange areas are connected in sequence, the multiple upper second edge heat exchange areas 102 are connected in sequence, the multiple lower first edge heat exchange areas 105 are connected in sequence, the multiple lower middle heat exchange areas 107 are connected in sequence, and the multiple lower second edge heat exchange areas 106 are connected in sequence.

[0043] The upper first edge heat exchange area 101 and the upper second edge heat exchange area 102 may flow with the same type of medium (for example, both are water, or both are gas, etc.), and the lower first edge heat exchange area 105 and the lower second edge heat exchange area 106 may flow with the same type of medium. The upper first edge heat exchange area 101 and the lower first edge heat exchange area 105 flow with the same type of medium, and the upper second edge heat exchange area 102 and the lower second edge heat exchange area 106 flow with the same type of medium.

[0044] As an optional solution, for the same layer of flow channels, different media flow through the first edge heat exchange area and the second edge heat exchange area; for flow channels of different layers, different media flow through the two first edge heat exchange areas, and different media flow through the two second edge heat exchange areas. This facilitates the setting of the medium delivery channel and the medium output channel.

[0045] On the basis of the above embodiment, further, the number of upper intermediate heat exchange zones is one more than the number of lower intermediate heat exchange zones; there are two different upper intermediate heat exchange zones corresponding to the same lower intermediate heat exchange zone 107 and are respectively connected to the upper first edge heat exchange zone 101 and the upper second edge heat exchange zone 102.

[0046] In this embodiment, the number of upper intermediate heat exchange zones is one more than the number of lower intermediate heat exchange zones, and the multiple upper intermediate heat exchange zones correspond to the lower intermediate heat exchange zone 107 to achieve corresponding heat exchange. At least two different upper intermediate heat exchange zones are connected to the upper first edge heat exchange zone 101 and the upper second edge heat exchange zone 102, respectively, that is, different media flow through the two different upper intermediate heat exchange zones, and the two upper intermediate heat exchange zones exchange heat with the same lower intermediate heat exchange zone 107, so that the medium of the lower intermediate heat exchange zone 107 can exchange heat with different media of the two upper intermediate heat exchange zones, further increasing the heat exchange function of the integrated heat exchanger.

[0047] It should be noted that the number of upper intermediate heat exchange layers and the number of lower intermediate heat exchange zones 107 can be set as needed. Of course, the flow channel can also include a third edge heat exchange zone, a fourth edge heat exchange zone or a fifth edge heat exchange zone, etc., which can be increased based on the embodiment of the present invention.

[0048] For example: the number of upper intermediate heat exchange zones is two, one is the first upper intermediate heat exchange zone 103, and the other is the second upper intermediate heat exchange zone 104. The first upper intermediate heat exchange zone 103 and the second upper intermediate heat exchange zone 104 are isolated from each other, the first upper intermediate heat exchange zone 103 is connected to the upper first edge heat exchange zone 101 (correspondingly, the first upper intermediate heat exchange zone 103 is isolated from the second edge heat exchange zone), and the second upper intermediate heat exchange zone 104 is connected to the upper second edge heat exchange zone 102 (correspondingly, the second upper intermediate heat exchange zone 104 is isolated from the first edge heat exchange zone); the number of lower intermediate heat exchange zones 107 is one, and the lower intermediate heat exchange zone 107 is connected to the lower first edge heat exchange zone 105.

[0049] like Figures 1 to 4As shown, on the basis of the above embodiment, further, the integrated heat exchanger also includes: a first fluid input channel 108, a first fluid output channel 109, a second fluid input channel 110, and a second fluid output channel 111; the first fluid input channel 108 is connected to the lower first edge heat exchange zone 105, and the first fluid output channel 109 is connected to the lower intermediate heat exchange zone 107; the second fluid input channel 110 is connected to the upper second edge heat exchange zone 102, and the second fluid output channel 111 is connected to the second upper intermediate heat exchange zone 104; the first medium input channel 112, the first medium output channel 113, the second medium input channel 114, and the second medium output channel 115; the first medium input channel 112 is connected to the first upper intermediate heat exchange zone 103, and the first medium output channel 113 is connected to the upper first edge heat exchange zone 101; the second medium input channel 114 and the second medium output channel 115 are both connected to the lower second edge heat exchange zone 106.

[0050] In this embodiment, when the fluid is a refrigerant, the first edge heat exchange zone can be used as a condensation zone, the second edge heat exchange zone can be used as an evaporation zone, the first upper intermediate heat exchange zone 103 can be a supercooling zone, and the second upper heat exchange zone can be an intermediate heat exchange zone. The medium can be water or air.

[0051] Further, the integrated heat exchanger further includes an upper cover plate 10 and a lower cover plate 11. In the height direction of the heat exchange core 1, the upper cover plate 10 is arranged on one side of the heat exchange core 1, and the lower cover plate 11 is arranged on the other side of the heat exchange core 1. The integrated heat exchanger further includes a first fluid input interface 2 communicating with the first fluid input channel 108, a first fluid output interface 3 communicating with the first fluid output channel 109, a second fluid input interface 4 communicating with the second fluid input channel 110, a second fluid output interface 5 communicating with the second fluid output channel 111, a first medium input interface 6 communicating with the first medium input channel 112, a first medium output interface 7 communicating with the first medium output channel 113, a second medium input interface 8 communicating with the second medium input channel 114, and a second medium output interface 9 communicating with the second medium output channel 115.

[0052] Optionally, the first fluid input interface 2, the first fluid output interface 3, the second fluid input interface 4 and the second fluid output interface 5 can be arranged on one of the upper cover plate 10 and the lower cover plate 11, and the first medium input interface 6, the first medium output interface 7, the second medium input interface 8 and the second medium output interface 9 can be arranged on the other of the upper cover plate 10 and the lower cover plate 11, so that the structure of the integrated heat exchanger is regular.

[0053] As an alternative, Figures 1 to 4As shown, along the length direction of the heat exchange unit, the first upper intermediate heat exchange zone and the second upper intermediate heat exchange zone are located between the upper first edge heat exchange zone 101 and the upper second edge heat exchange zone; along the width direction of the heat exchange unit, the first upper heat exchange zone and the second upper heat exchange zone are arranged side by side; along the length direction of the heat exchange unit, the lower intermediate heat exchange zone 107 is arranged between the lower first edge heat exchange zone 105 and the lower second edge heat exchange zone. At this time, the liquid storage tank can be conveniently integrated into the integrated heat exchanger, making the structure of the heat pump system more compact and more integrated. It can be understood that when integrating, the liquid storage tank inlet interface and the liquid storage tank outlet interface are set on the heat exchanger.

[0054] As another optional scheme, along the length direction of the heat exchange unit, the upper first edge heat exchange zone 101, the first upper intermediate heat exchange zone 103, the second upper intermediate heat exchange zone 104 and the upper second edge heat exchange zone 102 are arranged in sequence; along the length direction of the heat exchange unit, the lower first edge heat exchange zone 105, the lower intermediate heat exchange zone 107 and the lower second edge heat exchange zone 106 are arranged in sequence.

[0055] Furthermore, in this embodiment, a liquid storage tank may still be integrated, and the liquid storage tank may be in communication with at least one of the first edge heat exchange area and the second edge heat exchange area.

[0056] It is understandable that a fluid control component may be integrated into the integrated heat exchanger provided in the embodiment of the present invention as required.

[0057] Wherein, guide strips may be arranged in the lower intermediate heat exchange zone 107 to at least form an S-shaped flow path to improve the heat exchange efficiency.

[0058] On the basis of the above embodiment, further, the flow channel can be formed by pipes, a plurality of pipes are stacked along a set direction, and partitions are arranged in the pipes to separate the heat exchange areas of the flow channel.

[0059] On the basis of the above embodiments, further, the structure of the heat exchange unit can be various, for example: the heat exchange unit includes an upper plate, a middle plate and a lower plate; the upper plate and the middle plate are connected to form a layer of flow channel, and the lower plate and the middle plate are connected to form another layer of flow channel; a plurality of ribs are arranged in the flow channel, and the plurality of ribs divide the flow channel into a first edge heat exchange zone, a middle heat exchange zone, and a second edge heat exchange zone. The structure is simple and easy to assemble.

[0060] The ribs may be connected to the plate by welding, or as an alternative, may be formed on the plate by stamping.

[0061] As an alternative, Figure 5 and Figure 6As shown, the heat exchange unit includes three plates stacked in sequence. When the heat exchange unit only includes two layers of flow channels, in the heat exchange device, any three adjacent plates form a heat exchange unit; and when the heat exchange unit also includes an intermediate flow channel and / or an outer flow channel, more plates need to be stacked, and two adjacent plates form a flow channel.

[0062] Taking the heat exchange unit including only two layers of flow channels as an example, the three plates are an upper plate, a middle plate and a lower plate; wherein, two adjacent plates each form a layer of flow channels; a plate flange 118 is provided on the periphery of the plate, and the plate flange 118 of the next layer is welded to the plate flange 118 of the upper side, specifically, the inner side of the plate flange of the middle plate contacts the outer side of the plate flange of the plate for welding, and the inner side of the plate flange of the lower plate contacts the inner side of the plate flange of the middle plate for welding; a plurality of separation holes 116 are provided on the plate, and the plurality of separation holes 116 separate the flow channels into a first edge heat exchange zone, a middle heat exchange zone and a second edge heat exchange zone; a hole flange 117 is provided on the edge of the separation hole, and the direction of the hole flange 117 is the same as that of the plate flange; the hole flange of the next layer of plates is inserted into the corresponding separation hole of the previous layer of plates and welded to the corresponding hole flange.

[0063] In the present embodiment, the flow channel is divided into a first edge heat exchange zone, a middle heat exchange zone and a second edge heat exchange zone by means of the hole flanges of the lower plate and the upper plate. On the one hand, the hole flange processing and the welding between the hole flanges can increase the strength of the heat exchange unit, thereby increasing the strength of the integrated heat exchanger; on the other hand, the separation hole forms a fracture between at least parts of the two adjacent heat exchange zones, thereby avoiding heat cross-talk between the two heat exchange zones.

[0064] Among them, the first edge heat exchange zone, the middle heat exchange zone and the second edge heat exchange zone can be arranged in sequence along the first direction of the plate (which can be one of the length direction and the width direction of the plate); if the first edge heat exchange zone is connected with the middle heat exchange zone on one side of the second direction of the plate (which can be the other of the length direction and the width direction of the plate), or the first edge heat exchange zone is connected with the middle heat exchange zone on one side of the second direction of the plate (which can be the other of the length direction and the width direction of the plate), the side of the separation hole away from the connection point can be set through the plate, that is, the separation hole is a notch, which is convenient for processing. If the first heat exchange zone and the middle heat exchange zone are completely isolated or the second edge heat exchange zone is completely isolated from the middle heat exchange zone, in order to ensure the continuity of the plate, a protrusion or a pit can be set at at least one end of the plate located at the separation hole to connect with another plate.

[0065] It is understandable that a partition 119 (eg, a protrusion, a recess or a flange hole, etc.) may be provided in the upper intermediate heat exchange zone to achieve separation, so as to form a first upper intermediate heat exchange zone 103 and a second upper intermediate heat exchange zone 104 .

[0066] The embodiment of the present invention further provides a heat pump system, comprising the integrated heat exchanger of any of the above technical solutions, wherein the first edge heat exchange area is a condensation area, and the second edge heat exchange area is an evaporation area. The heat pump system has high integration and occupies less space.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. In the description provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the present invention can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description. In addition, those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments means being within the scope of the present invention and forming different embodiments.

Claims

1. An integrated heat exchanger, characterized in that: include: The heat exchange core comprises a plurality of stacked heat exchange units; the heat exchange units comprise an upper flow channel and a lower flow channel arranged along the stacking direction; the upper flow channel and the lower flow channel each comprise a first edge heat exchange area, a middle heat exchange area, and a second edge heat exchange area; the first edge heat exchange areas of the upper and lower layers correspondingly realize heat exchange, the middle heat exchange areas of the upper and lower layers correspondingly realize heat exchange, and the second edge heat exchange areas of the upper and lower layers correspondingly realize heat exchange; The first one of the first edge heat exchange area and the second edge heat exchange area is in communication with the intermediate heat exchange area; a medium can flow into the first one of the first one of the first one of the intermediate heat exchange area and flow out of the second one of the first one of the intermediate heat exchange area; The second one of the first edge heat exchange region and the second edge heat exchange region is isolated from the intermediate heat exchange region; a medium can flow into and out of the second one.

2. The integrated heat exchanger according to claim 1, characterized in that: The upper flow channel includes an upper first edge heat exchange area, an upper middle heat exchange area, and an upper second edge heat exchange area; the lower flow channel includes a lower first edge heat exchange area, a lower middle heat exchange area, and a lower second edge heat exchange area; The number of the upper intermediate heat exchange zones is one more than the number of the lower intermediate heat exchange zones; there are two different upper intermediate heat exchange zones corresponding to the same lower intermediate heat exchange zone and are respectively connected to the upper first edge heat exchange zone and the upper second edge heat exchange zone.

3. The integrated heat exchanger according to claim 2, characterized in that: There are two upper intermediate heat exchange zones, one is a first upper intermediate heat exchange zone, and the other is a second upper intermediate heat exchange zone. The first upper intermediate heat exchange zone and the second upper intermediate heat exchange zone are isolated from each other. The first upper intermediate heat exchange zone is connected to the upper first edge heat exchange zone, and the second upper intermediate heat exchange zone is connected to the upper second edge heat exchange zone. The number of the lower intermediate heat exchange zone is one, and the lower intermediate heat exchange zone is connected to the lower first edge heat exchange zone.

4. The integrated heat exchanger according to claim 3, characterized in that: The integrated heat exchanger also includes: a first fluid input channel, a first fluid output channel, a second fluid input channel, and a second fluid output channel; the first fluid input channel is connected to the first edge heat exchange zone of the lower layer, and the first fluid output channel is connected to the middle heat exchange zone of the lower layer; the second fluid input channel is connected to the second edge heat exchange zone of the upper layer, and the second fluid output channel is connected to the middle heat exchange zone of the second upper layer; A first medium input channel, a first medium output channel, a second medium input channel, and a second medium output channel; the first medium input channel is connected to the first upper intermediate heat exchange zone, and the first medium output channel is connected to the upper first edge heat exchange zone; the second medium input channel and the second medium output channel are both connected to the lower second edge heat exchange zone.

5. The integrated heat exchanger according to claim 4, characterized in that: Along the length direction of the heat exchange unit, the first upper intermediate heat exchange area and the second upper intermediate heat exchange area are located between the upper first edge heat exchange area and the upper second edge heat exchange area; along the width direction of the heat exchange unit, the first upper intermediate heat exchange area and the second upper intermediate heat exchange area are arranged side by side; Along the length direction of the heat exchange unit, the lower intermediate heat exchange zone is arranged between the lower first edge heat exchange zone and the lower second edge heat exchange zone.

6. The integrated heat exchanger according to claim 4, characterized in that: Along the length direction of the heat exchange unit, the upper first edge heat exchange area, the first upper middle heat exchange area, the second upper middle heat exchange area and the upper second edge heat exchange area are arranged in sequence; Along the length direction of the heat exchange unit, the lower first edge heat exchange area, the lower middle heat exchange area and the lower second edge heat exchange area are arranged in sequence.

7. The integrated heat exchanger according to claim 6, characterized in that: The lower intermediate heat exchange zone is provided with guide strips to at least form an S-shaped flow path.

8. The integrated heat exchanger according to any one of claims 1 to 6, characterized in that: The heat exchange unit comprises three plates stacked in sequence, wherein two adjacent plates each form a layer of flow channel; The plate is provided with a plate flange at the periphery, and the plate flange of the next layer is welded to the plate flange of the upper side; A plurality of separation holes are provided on the plate, and the plurality of separation holes separate the flow channel into the first edge heat exchange zone, the middle heat exchange zone and the second edge heat exchange zone; hole flanges are provided at the edges of the separation holes, and the direction of the hole flanges is the same as that of the plate flanges; the hole flanges of the next layer of the plate are inserted into the corresponding separation holes of the previous layer of the plate and are welded to the corresponding hole flanges.

9. A heat pump system, characterized in that: Comprising the integrated heat exchanger as claimed in any one of claims 1-8.

10. The heat pump system according to claim 9, characterized in that: The first edge heat exchange zone is a condensation zone, and the second edge heat exchange zone is an evaporation zone.

Images