Dual system heat exchanger

Abstract

The utility model provides a kind of double system heat exchanger, wherein first heat exchanger and second heat exchanger are arranged side by side, first heat exchange zone in first heat exchanger and fourth heat exchange zone in second heat exchanger are communicated and form first heat exchange system, third heat exchange zone in second heat exchanger and second heat exchange zone in first heat exchanger are communicated and form second heat exchange system. Like this when using, one heat exchange zone is close to the wind blown by fan in two heat exchange systems, one heat exchange zone is far from the wind blown by fan, that is, the wind for heat exchange with two heat exchange systems, the wind temperature corresponding to one heat exchange zone is relatively high, the wind temperature corresponding to one heat exchange zone is relatively low, this kind of heat exchange mode makes the heat exchange capacity difference of two heat exchange systems reduce or even same. Like this when two heat exchange systems are heat exchanged to different indoor environment respectively, make the heat exchange effect of different indoor environment similar, avoid the problem of affecting use effect due to the heat exchange capacity difference of two heat exchange systems.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and more specifically, to a dual-system heat exchanger. Background Technology

[0002] Existing dual-system heat exchangers consist of two parallel and independent heat exchangers, each with its own loop forming a separate heat exchange system. In operation, a fan is positioned on one side of the dual-system heat exchanger, blowing air onto both heat exchangers. The distances between the two heat exchangers and the fan differ; the first heat exchanger directly contacts the air blown by the fan, while the second heat exchanger contacts air that has already undergone heat exchange once. This means the air temperatures contacting the two heat exchangers are different. Therefore, the two independent heat exchange systems and the fan's placement on one side in this dual-system heat exchanger result in significant differences in the heat exchange performance between the two systems. Utility Model Content

[0003] This invention provides a dual-system heat exchanger to solve the problem of large differences in heat exchange effects between the two heat exchange systems in existing dual-system heat exchangers.

[0004] To address the aforementioned problems, this utility model provides a dual-system heat exchanger, comprising: a first heat exchanger, a second heat exchanger, a first cross tube, and a second cross tube. The first and second heat exchangers are arranged side-by-side. The first heat exchanger has a first heat exchange zone and a second heat exchange zone, which are not connected. The second heat exchanger has a third heat exchange zone and a fourth heat exchange zone, which are not connected. The first and third heat exchange zones are arranged opposite to each other, as are the second and fourth heat exchange zones. The first heat exchange zone is connected to the fourth heat exchange zone via the first cross tube to form a first heat exchange system, and the third heat exchange zone is connected to the second heat exchange zone via the second cross tube to form a second heat exchange system.

[0005] Furthermore, when there are multiple loops in the first heat exchange zone, the multiple loops in the first heat exchange zone are connected sequentially, and the last loop or the first loop on the fluid flow path in the first heat exchange zone is connected to the fourth heat exchange zone through the first cross tube; when there are multiple loops in the second heat exchange zone, the multiple loops in the second heat exchange zone are connected sequentially, and the first loop or the last loop on the fluid flow path in the second heat exchange zone is connected to the third heat exchange zone through the second cross tube; when there are multiple loops in the third heat exchange zone, the multiple loops in the third heat exchange zone are connected sequentially, and the last loop or the first loop on the fluid flow path in the third heat exchange zone is connected to the second heat exchange zone through the second cross tube; when there are multiple loops in the fourth heat exchange zone, the multiple loops in the fourth heat exchange zone are connected sequentially, and the first loop or the last loop on the fluid flow path in the fourth heat exchange zone is connected to the first heat exchange zone through the first cross tube.

[0006] Furthermore, the number of loops in the first heat exchange zone is the same as the number of loops in the third heat exchange zone, and the number of loops in the second heat exchange zone is the same as the number of loops in the fourth heat exchange zone; and / or, the number of loops in the first heat exchange zone is the same as the number of loops in the second heat exchange zone, and the number of loops in the third heat exchange zone is the same as the number of loops in the fourth heat exchange zone.

[0007] Furthermore, the dual-system heat exchanger also includes a first connecting pipe, a second connecting pipe, a third connecting pipe, and a fourth connecting pipe. The first connecting pipe is connected to the first heat exchange zone, the second connecting pipe is connected to the second heat exchange zone, the third connecting pipe is connected to the third heat exchange zone, and the fourth connecting pipe is connected to the fourth heat exchange zone. Among these, the first and third connecting pipes serve as input pipes and the second and fourth connecting pipes serve as output pipes, or the first and third connecting pipes serve as output pipes and the second and fourth connecting pipes serve as input pipes.

[0008] Furthermore, the first and third connecting pipes are set up independently, and both the first and third connecting pipes can be switched on and off independently; the second and fourth connecting pipes are set up independently, and both the second and fourth connecting pipes can be switched on and off independently.

[0009] Furthermore, the dual-system heat exchanger also includes a first main pipe and a second main pipe, with the first connecting pipe and the third connecting pipe both connected to the first main pipe, and the second connecting pipe and the fourth connecting pipe both connected to the second main pipe.

[0010] Furthermore, the first and third connecting pipes are staggered in the direction from the first heat exchange zone to the second heat exchange zone; the second and fourth connecting pipes are staggered in the direction from the first heat exchange zone to the second heat exchange zone; the first and second cross pipes are both located between the first and second connecting pipes, and the first and second cross pipes are both located between the third and fourth connecting pipes.

[0011] Furthermore, the first span pipe includes a first short pipe, a first bend, a first straight pipe, a second bend, and a second short pipe connected in sequence. The first short pipe is connected to the first heat exchange zone, and the second short pipe is connected to the fourth heat exchange zone. The second span pipe includes a third short pipe, a third bend, a second straight pipe, a fourth bend, and a fourth short pipe connected in sequence. The third short pipe is connected to the third heat exchange zone, and the fourth short pipe is connected to the second heat exchange zone. The first straight pipe and the second straight pipe are arranged alternately.

[0012] Furthermore, the first heat exchanger includes two first manifolds and a plurality of first heat exchange tubes arranged side by side between the two first manifolds, and the second heat exchanger includes two second manifolds and a plurality of second heat exchange tubes arranged side by side between the two second manifolds; wherein, all loops in the first heat exchanger are arranged sequentially along the extension direction of the first manifolds, and all loops in the second heat exchanger are arranged sequentially along the extension direction of the second manifolds; the two ends of the first cross tube are respectively connected to a first manifold and a second manifold, and the two ends of the second cross tube are respectively connected to a first manifold and a second manifold.

[0013] Furthermore, both the first heat exchange tube and the second heat exchange tube are flat tubes, and the width direction of the first heat exchange tube and the width direction of the second heat exchange tube are in the same direction. The ratio between the width of the second heat exchange tube and the width of the first heat exchange tube is 1 to 4.

[0014] Furthermore, the first heat exchanger also includes a plurality of first fins arranged side by side, each first fin including a first flat plate and a first corrugated plate connected to each other, and a plurality of first heat exchange tubes passing through the first flat plate; the second heat exchanger also includes a plurality of second fins arranged side by side, each second fin including a second flat plate and a second corrugated plate connected to each other, and a plurality of second heat exchange tubes passing through the second flat plate.

[0015] Furthermore, the inner diameter of the first connector is equal to the inner diameter of the third connector, the inner diameter of the first connector is smaller than the inner diameter of the second connector, and the inner diameter of the second connector is equal to the inner diameter of the fourth connector.

[0016] In this design, the first and second heat exchangers are arranged side-by-side. The first heat exchange zone in the first heat exchanger and the fourth heat exchange zone in the second heat exchanger are connected to form the first heat exchange system. The third heat exchange zone in the second heat exchanger and the second heat exchange zone in the first heat exchanger are connected to form the second heat exchange system. In operation, each heat exchange system has one heat exchange zone closer to the air blown by the fan and one heat exchange zone farther away. This means that the air temperature corresponding to the two heat exchange systems is relatively high in one heat exchange zone and relatively low in the other. This heat exchange method reduces or even equalizes the difference in heat exchange capacity between the two systems. Therefore, when the two heat exchange systems heat different indoor environments, the heat exchange effect is similar, avoiding the problem of large differences in heat exchange capacity affecting the performance. Furthermore, through the above arrangement, each heat exchange system achieves one co-current heat exchange zone and one counter-current heat exchange zone, which improves the overall heat exchange capacity of the dual-system heat exchangers. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A perspective view of the dual-system heat exchanger provided in Embodiment 1 of this utility model is shown;

[0019] Figure 2 A top view of the dual-system heat exchanger provided in Embodiment 1 of this utility model is shown;

[0020] Figure 3 A front view of the dual-system heat exchanger provided in Embodiment 1 of this utility model is shown;

[0021] Figure 4 A front view of the dual-system heat exchanger provided in Embodiment 2 of this utility model is shown;

[0022] Figure 5 A perspective view of the dual-system heat exchanger provided in Embodiment 3 of this utility model is shown.

[0023] The above figures include the following reference numerals:

[0024] 10. First heat exchanger; 11. First heat exchange zone; 12. Second heat exchange zone; 13. First manifold; 14. First heat exchange tube; 15. First fin;

[0025] 20. Second heat exchanger; 21. Third heat exchange zone; 22. Fourth heat exchange zone; 23. Second manifold; 24. Second heat exchange tube; 25. Second fin;

[0026] 31. First span; 32. Second span;

[0027] 41. First takeover; 42. Second takeover; 43. Third takeover; 44. Fourth takeover;

[0028] 51. First General Manager; 52. Second General Manager. Detailed Implementation

[0029] The technical solutions in at least one embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. The following description of at least one embodiment is merely illustrative and is not intended to limit this application or its applications. Other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are all within the scope of protection of this application.

[0030] like Figures 1 to 5As shown, an embodiment of this utility model provides a dual-system heat exchanger, including: a first heat exchanger 10, a second heat exchanger 20, a first cross tube 31, and a second cross tube 32. The first heat exchanger 10 and the second heat exchanger 20 are arranged side by side. The first heat exchanger 10 has a first heat exchange zone 11 and a second heat exchange zone 12, and the first heat exchange zone 11 and the second heat exchange zone 12 are not connected. The second heat exchanger 20 has a third heat exchange zone 21 and a fourth heat exchange zone 22, and the third heat exchange zone 21 and the fourth heat exchange zone 22 are not connected. The first heat exchange zone 11 and the third heat exchange zone 21 are arranged opposite to each other, and the second heat exchange zone 12 and the fourth heat exchange zone 22 are arranged opposite to each other. The first heat exchange zone 11 is connected to the fourth heat exchange zone 22 through the first cross tube 31 to form a first heat exchange system, and the third heat exchange zone 21 is connected to the second heat exchange zone 12 through the second cross tube 32 to form a second heat exchange system.

[0031] In this design, the first heat exchanger 10 and the second heat exchanger 20 are arranged side by side. The first heat exchange zone 11 in the first heat exchanger 10 and the fourth heat exchange zone 22 in the second heat exchanger 20 are connected to form a first heat exchange system. The third heat exchange zone 21 in the second heat exchanger 20 and the second heat exchange zone 12 in the first heat exchanger 10 are connected to form a second heat exchange system. In operation, each heat exchange system has one heat exchange zone closer to the air blown by the fan and one heat exchange zone farther away. This means that the air temperature corresponding to one heat exchange zone is relatively high, and the air temperature corresponding to the other heat exchange zone is relatively low. This heat exchange method reduces or even equalizes the difference in heat exchange capacity between the two systems. Therefore, when the two heat exchange systems heat different indoor environments, the heat exchange effect is similar, avoiding the problem of large differences in heat exchange capacity between the two systems affecting the performance. Furthermore, through the above settings, both heat exchange systems achieve one heat exchange zone for co-current heat exchange and one heat exchange zone for counter-current heat exchange, which can improve the overall heat exchange capacity of the dual-system heat exchangers.

[0032] The first heat exchange zone 11 and the third heat exchange zone 21 are arranged opposite each other, meaning that along the parallel direction of the two heat exchangers, the first heat exchange zone 11 and the third heat exchange zone 21 are directly opposite or correspond to each other; the second heat exchange zone 12 and the fourth heat exchange zone 22 are arranged opposite each other, meaning that along the parallel direction of the two heat exchangers, the second heat exchange zone 12 and the fourth heat exchange zone 22 are directly opposite or correspond to each other.

[0033] Each of the first heat exchange zone 11, the second heat exchange zone 12, the third heat exchange zone 21, and the fourth heat exchange zone 22 includes at least one loop. A loop is an independent, closed fluid channel used to achieve directional flow of the heat exchange fluid and heat transfer. Each loop in the first heat exchange zone 11, the second heat exchange zone 12, the third heat exchange zone 21, and the fourth heat exchange zone 22 is a unidirectional flow fluid channel.

[0034] Wherein, if there are multiple loops in the first heat exchange zone 11, the multiple loops in the first heat exchange zone 11 are connected sequentially, and the last loop or the first loop on the fluid flow path in the first heat exchange zone 11 is connected to the fourth heat exchange zone 22 through the first cross pipe 31; where there are multiple loops in the second heat exchange zone 12, the multiple loops in the second heat exchange zone 12 are connected sequentially, and the first loop or the last loop on the fluid flow path in the second heat exchange zone 12 is connected to the third heat exchange zone 21 through the second cross pipe 32; where there are multiple loops in the third heat exchange zone 21, the multiple loops in the third heat exchange zone 21 are connected sequentially, and the last loop or the first loop on the fluid flow path in the third heat exchange zone 21 is connected to the second heat exchange zone 12 through the second cross pipe 32; where there are multiple loops in the fourth heat exchange zone 22, the multiple loops in the fourth heat exchange zone 22 are connected sequentially, and the first loop or the last loop on the fluid flow path in the fourth heat exchange zone 22 is connected to the first heat exchange zone 11 through the first cross pipe 31.

[0035] By controlling the flow sequence of the refrigerant in different loops, alternating co-current and counter-current flow can be achieved, enhancing the heat exchange effect and achieving higher heat exchange capacity and lower energy consumption. The number of loops in each heat exchange zone can be set as needed, and multiple loops can be set in different heat exchange zones to make the fluid distribution within the heat exchanger more uniform and improve the heat exchange effect.

[0036] In some embodiments, the number of loops in the first heat exchange zone 11 is the same as the number of loops in the third heat exchange zone 21, and the number of loops in the second heat exchange zone 12 is the same as the number of loops in the fourth heat exchange zone 22; and / or, the number of loops in the first heat exchange zone 11 is the same as the number of loops in the second heat exchange zone 12, and the number of loops in the third heat exchange zone 21 is the same as the number of loops in the fourth heat exchange zone 22. Where the number of loops in the first heat exchange zone 11, the second heat exchange zone 12, the third heat exchange zone 21, and the fourth heat exchange zone 22 are all the same, and the first heat exchanger 10 and the second heat exchanger 20 have the same structure and size, the heat exchange capacity of the first heat exchange system and the second heat exchange system can be made the same.

[0037] like Figure 1 As shown, the dual-system heat exchanger also includes a first connecting pipe 41, a second connecting pipe 42, a third connecting pipe 43, and a fourth connecting pipe 44. The first connecting pipe 41 is connected to the first heat exchange zone 11, the second connecting pipe 42 is connected to the second heat exchange zone 12, the third connecting pipe 43 is connected to the third heat exchange zone 21, and the fourth connecting pipe 44 is connected to the fourth heat exchange zone 22. The first connecting pipe 41 and the third connecting pipe 43 serve as input pipes, and the second connecting pipe 42 and the fourth connecting pipe 44 serve as output pipes, or the first connecting pipe 41 and the third connecting pipe 43 serve as output pipes, and the second connecting pipe 42 and the fourth connecting pipe 44 serve as input pipes.

[0038] The first connecting pipe 41, the second connecting pipe 42, the third connecting pipe 43, and the fourth connecting pipe 44 are used to connect with other input or output refrigerant pipes in the air conditioning system, thereby realizing heat exchange in the air conditioning system. For example, when the heat exchanger acts as a condenser, the refrigerant enters the first heat exchange system and the second heat exchange system from the first connecting pipe 41 and the second connecting pipe 42, respectively, and then exits from the third connecting pipe 43 and the fourth connecting pipe 44; when the heat exchanger acts as an evaporator, the refrigerant enters the first heat exchange system and the second heat exchange system from the third connecting pipe 43 and the fourth connecting pipe 44, respectively, and then exits from the first connecting pipe 41 and the second connecting pipe 42.

[0039] In some embodiments, the first connector 41 and the third connector 43 are independently configured, and both the first connector 41 and the third connector 43 can be switched on and off independently; the second connector 42 and the fourth connector 44 are independently configured, and both the second connector 42 and the fourth connector 44 can be switched on and off independently.

[0040] In this design, the first and second heat exchange systems can operate independently. For example, the dual-system heat exchanger can act as the outdoor condenser, with each system exchanging heat for a different indoor unit. Since the heat exchange capacities of the first and second systems are similar, the heat exchange effects of different indoor units are comparable, avoiding the problem of large differences in heat exchange performance that could negatively impact user experience. Alternatively, the first and second systems can also work together to heat the same indoor unit. When high heat exchange capacity is required, both systems are activated; when low heat exchange capacity is needed, only one system is activated, achieving energy savings.

[0041] like Figure 5 As shown, in some embodiments, the dual-system heat exchanger further includes a first main pipe 51 and a second main pipe 52. A first connecting pipe 41 and a third connecting pipe 43 are both connected to the first main pipe 51, and a second connecting pipe 42 and a fourth connecting pipe 44 are both connected to the second main pipe 52. In this configuration, the first and second heat exchange systems exchange heat together, resulting in higher heat exchange capacity compared to existing systems in two parallel and independent heat exchangers.

[0042] like Figure 1 and Figure 2 As shown, the first connecting pipe 41 and the third connecting pipe 43 are staggered in the direction from the first heat exchange zone 11 to the second heat exchange zone 12; the second connecting pipe 42 and the fourth connecting pipe 44 are staggered in the direction from the first heat exchange zone 11 to the second heat exchange zone 12; the first cross pipe 31 and the second cross pipe 32 are both located between the first connecting pipe 41 and the second connecting pipe 42, and the first cross pipe 31 and the second cross pipe 32 are both located between the third connecting pipe 43 and the fourth connecting pipe 44.

[0043] By staggering the first connecting pipe 41, the third connecting pipe 43, the second connecting pipe 42, and the fourth connecting pipe 44 in the direction from the first heat exchange zone 11 to the second heat exchange zone 12, the space occupied by multiple connecting pipes in the parallel direction of the first heat exchanger 10 and the second heat exchanger 20 can be reduced. By placing the first cross pipe 31 and the second cross pipe 32 between multiple connecting pipes, the space between the multiple connecting pipes is fully utilized, reducing or avoiding the occupation of additional space and improving the structural compactness of the dual-system heat exchanger.

[0044] In this scheme, the first cross-pipe 31 includes a first short pipe, a first bend, a first straight pipe, a second bend, and a second short pipe connected in sequence. The first short pipe is connected to the first heat exchange zone 11, and the second short pipe is connected to the fourth heat exchange zone 22. The second cross-pipe 32 includes a third short pipe, a third bend, a second straight pipe, a fourth bend, and a fourth short pipe connected in sequence. The third short pipe is connected to the third heat exchange zone 21, and the fourth short pipe is connected to the second heat exchange zone 12. The first straight pipe and the second straight pipe are arranged alternately.

[0045] Because the first heat exchange zone 11 and the fourth heat exchange zone 22 are staggered, and the second heat exchange zone 12 and the third heat exchange zone 21 are also staggered, the above-described structural arrangement of the first cross-pipe 31 and the second cross-pipe 32 enables communication between the staggered first heat exchange zone 11 and the fourth heat exchange zone 22, as well as between the staggered second heat exchange zone 12 and the third heat exchange zone 21. Furthermore, the above-described structural arrangement of the first cross-pipe 31 and the second cross-pipe 32 is compact and occupies little space.

[0046] like Figure 1 As shown, the first heat exchanger 10 includes two first manifolds 13 and a plurality of first heat exchange tubes 14 arranged side by side between the two first manifolds 13; the second heat exchanger 20 includes two second manifolds 23 and a plurality of second heat exchange tubes 24 arranged side by side between the two second manifolds 23; wherein, all loops in the first heat exchanger 10 are arranged sequentially along the extension direction of the first manifolds 13, and all loops in the second heat exchanger 20 are arranged sequentially along the extension direction of the second manifolds 23; the two ends of the first cross tube 31 are respectively connected to a first manifold 13 and a second manifold 23, and the two ends of the second cross tube 32 are respectively connected to a first manifold 13 and a second manifold 23.

[0047] The manifold is used to distribute refrigerant to multiple heat exchange tubes connected to it or to collect refrigerant from multiple heat exchange tubes. The two ends of the first cross tube 31 are connected to a first manifold 13 and a second manifold 23 respectively, realizing the connection between the first heat exchange zone 11 and the fourth heat exchange zone 22. The two ends of the second cross tube 32 are connected to a first manifold 13 and a second manifold 23 respectively, realizing the connection between the second heat exchange zone 12 and the fourth heat exchange zone 22.

[0048] Specifically, both the first heat exchange tube 14 and the second heat exchange tube 24 are flat tubes, resulting in a compact dual-system heat exchanger with high heat exchange efficiency. The width direction of the first heat exchange tube 14 and the width direction of the second heat exchange tube 24 are the same, and the ratio between the width of the second heat exchange tube 24 and the width of the first heat exchange tube 14 is between 1 and 4. With other structural parameters remaining the same, a larger heat exchange tube allows for more refrigerant to flow inside, resulting in stronger heat exchange capacity. Depending on manufacturing and usage requirements, the widths of the first heat exchange tube 14 and the second heat exchange tube 24 can be set to be the same or different.

[0049] In other embodiments, the first heat exchange tube 14 and the second heat exchange tube 24 can be configured as circular tubes, and the inner diameters of the first heat exchange tube 14 and the second heat exchange tube 24 can be configured to be the same or different as needed.

[0050] like Figure 1 As shown, the first heat exchanger 10 further includes multiple parallel first fins 15, each first fin comprising an interconnected first flat plate and a first corrugated plate, with multiple first heat exchange tubes 14 passing through the first flat plate. The second heat exchanger 20 further includes multiple parallel second fins 25, each second fin comprising an interconnected second flat plate and a second corrugated plate, with multiple second heat exchange tubes 24 passing through the second flat plate. By setting the first fins 15 and the second fins 25, the contact area with air can be increased, improving the heat exchange effect. The corrugated plate further enhances the heat exchange effect of the heat exchanger.

[0051] like Figure 1 As shown, the inner diameter of the first connector 41 is equal to the inner diameter of the third connector 43, the inner diameter of the first connector 41 is smaller than the inner diameter of the second connector 42, and the inner diameter of the second connector 42 is equal to the inner diameter of the fourth connector 44.

[0052] When the heat exchanger functions as a condenser, the refrigerant enters the first and second heat exchange systems through the relatively small-diameter first connecting pipe 41 and second connecting pipe 42, respectively. The small-diameter pipes increase the refrigerant flow rate and enhance the heat exchange effect. When the heat exchanger functions as an evaporator, the refrigerant enters the first and second heat exchange systems through the third connecting pipe 43 and fourth connecting pipe 44, respectively. Since the refrigerant expands upon entering the heat exchanger, the large-diameter pipes provide sufficient space for its entry.

[0053] The operation of this dual-system heat exchanger is as follows: When the heat exchanger acts as a condenser, the refrigerant first enters the first heat exchange zone 11 through the first connecting pipe 41 for the first heat exchange, then enters the fourth heat exchange zone 22 through the first cross pipe 31 for the second heat exchange, and finally exits through the fourth connecting pipe 44. Simultaneously, the refrigerant from the second system enters the third heat exchange zone 21 through the third connecting pipe 43, then enters the second heat exchange zone 12 through the second cross pipe 32 for heat exchange, and finally exits through the second connecting pipe 42. This process can occur in both heating and cooling modes, and the refrigerant flow direction will be reversed due to the switching of the four-way reversing valve. Under partial load conditions, energy can be saved and energy efficiency improved by closing the connecting pipe of one heat exchange system, allowing the refrigerant to flow only through the other heat exchange system. Under high load conditions, both systems operate simultaneously, achieving more efficient heat exchange through cross-flow to meet higher heat exchange demands. The entire operation of this technical solution has advantages in improving heat exchange efficiency and reducing energy consumption.

[0054] The above descriptions are merely some embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0055] The technical features of the embodiments described above can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification.

[0056] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0057] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as exemplary only and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0058] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0059] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0060] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

Claims

1. A dual-system heat exchanger, characterized in that, include: A first heat exchanger (10), a second heat exchanger (20), a first cross tube (31), and a second cross tube (32) are arranged side by side. The first heat exchanger (10) has a first heat exchange zone (11) and a second heat exchange zone (12), and the first heat exchange zone (11) and the second heat exchange zone (12) are not connected. The second heat exchanger (20) has a third heat exchange zone (21) and a fourth heat exchange zone (22), and the third heat exchange zone (21) and the fourth heat exchange zone (22) are not connected. The first heat exchange zone (11) and the third heat exchange zone (21) are arranged opposite to each other, and the second heat exchange zone (12) and the fourth heat exchange zone (22) are arranged opposite to each other. The first heat exchange zone (11) is connected to the fourth heat exchange zone (22) through the first cross pipe (31) to form a first heat exchange system, and the third heat exchange zone (21) is connected to the second heat exchange zone (12) through the second cross pipe (32) to form a second heat exchange system.

2. The dual-system heat exchanger according to claim 1, characterized in that, In the case where there are multiple loops in the first heat exchange zone (11), the multiple loops in the first heat exchange zone (11) are connected in sequence, and the last loop or the first loop on the fluid flow path in the first heat exchange zone (11) is connected to the fourth heat exchange zone (22) through the first cross pipe (31). In the case where there are multiple loops in the second heat exchange zone (12), the multiple loops in the second heat exchange zone (12) are connected in sequence, and the first loop or the last loop on the fluid flow path in the second heat exchange zone (12) is connected to the third heat exchange zone (21) through the second cross pipe (32); In the case where there are multiple loops in the third heat exchange zone (21), the multiple loops in the third heat exchange zone (21) are connected in sequence, and the last loop or the first loop on the fluid flow path in the third heat exchange zone (21) is connected to the second heat exchange zone (12) through the second cross pipe (32); In the case where there are multiple loops in the fourth heat exchange zone (22), the multiple loops in the fourth heat exchange zone (22) are connected in sequence, and the first loop or the last loop on the fluid flow path in the fourth heat exchange zone (22) is connected to the first heat exchange zone (11) through the first cross pipe (31).

3. The dual-system heat exchanger according to claim 1, characterized in that, The number of loops in the first heat exchange zone (11) is the same as the number of loops in the third heat exchange zone (21), and the number of loops in the second heat exchange zone (12) is the same as the number of loops in the fourth heat exchange zone (22); and / or, The number of loops in the first heat exchange zone (11) is the same as the number of loops in the second heat exchange zone (12), and the number of loops in the third heat exchange zone (21) is the same as the number of loops in the fourth heat exchange zone (22).

4. The dual-system heat exchanger according to any one of claims 1-3, characterized in that, The dual-system heat exchanger further includes a first connecting pipe (41), a second connecting pipe (42), a third connecting pipe (43), and a fourth connecting pipe (44). The first connecting pipe (41) is connected to the first heat exchange zone (11), the second connecting pipe (42) is connected to the second heat exchange zone (12), the third connecting pipe (43) is connected to the third heat exchange zone (21), and the fourth connecting pipe (44) is connected to the fourth heat exchange zone (22). The first connecting pipe (41) and the third connecting pipe (43) serve as input pipes, and the second connecting pipe (42) and the fourth connecting pipe (44) serve as output pipes, or the first connecting pipe (41) and the third connecting pipe (43) serve as output pipes, and the second connecting pipe (42) and the fourth connecting pipe (44) serve as input pipes.

5. The dual-system heat exchanger according to claim 4, characterized in that, The first connector (41) and the third connector (43) are independently configured, and both the first connector (41) and the third connector (43) can be switched on and off independently. The second connector (42) and the fourth connector (44) are set independently of each other, and both the second connector (42) and the fourth connector (44) can be switched on and off independently.

6. The dual-system heat exchanger according to claim 4, characterized in that, The dual-system heat exchanger also includes a first main pipe (51) and a second main pipe (52). The first connecting pipe (41) and the third connecting pipe (43) are both connected to the first main pipe (51), and the second connecting pipe (42) and the fourth connecting pipe (44) are both connected to the second main pipe (52).

7. The dual-system heat exchanger according to claim 4, characterized in that, The first connecting pipe (41) and the third connecting pipe (43) are offset in the direction from the first heat exchange zone (11) to the second heat exchange zone (12); the second connecting pipe (42) and the fourth connecting pipe (44) are offset in the direction from the first heat exchange zone (11) to the second heat exchange zone (12); the first cross pipe (31) and the second cross pipe (32) are both located between the first connecting pipe (41) and the second connecting pipe (42), and the first cross pipe (31) and the second cross pipe (32) are both located between the third connecting pipe (43) and the fourth connecting pipe (44).

8. The dual-system heat exchanger according to claim 1, characterized in that, The first cross pipe (31) includes a first short pipe, a first bend pipe, a first straight pipe, a second bend pipe and a second short pipe connected in sequence. The first short pipe is connected to the first heat exchange zone (11) and the second short pipe is connected to the fourth heat exchange zone (22). The second cross pipe (32) includes a third short pipe, a third bend pipe, a second straight pipe, a fourth bend pipe and a fourth short pipe connected in sequence. The third short pipe is connected to the third heat exchange zone (21) and the fourth short pipe is connected to the second heat exchange zone (12). The first straight pipe and the second straight pipe are arranged alternately.

9. The dual-system heat exchanger according to claim 1, characterized in that, The first heat exchanger (10) includes two first manifolds (13) and a plurality of first heat exchange tubes (14) arranged side by side between the two first manifolds (13). The second heat exchanger (20) includes two second manifolds (23) and a plurality of second heat exchange tubes (24) arranged side by side between the two second manifolds (23). All loops in the first heat exchanger (10) are arranged sequentially along the extension direction of the first manifolds (13), and all loops in the second heat exchanger (20) are arranged sequentially along the extension direction of the second manifolds (23). The two ends of the first cross tube (31) are respectively connected to a first manifold (13) and a second manifold (23), and the two ends of the second cross tube (32) are respectively connected to a first manifold (13) and a second manifold (23).

10. The dual-system heat exchanger according to claim 9, characterized in that, Both the first heat exchange tube (14) and the second heat exchange tube (24) are flat tubes. The width direction of the first heat exchange tube (14) and the width direction of the second heat exchange tube (24) are in the same direction. The ratio between the width of the second heat exchange tube (24) and the width of the first heat exchange tube (14) is 1 to 4.

11. The dual-system heat exchanger according to claim 9, characterized in that, The first heat exchanger (10) further includes a plurality of first fins (15) arranged side by side, the first fins (15) including a first plate and a first corrugated plate connected to each other, and a plurality of first heat exchange tubes (14) passing through the first plate; the second heat exchanger (20) further includes a plurality of second fins (25) arranged side by side, the second fins (25) including a second plate and a second corrugated plate connected to each other, and a plurality of second heat exchange tubes (24) passing through the second plate.

12. The dual-system heat exchanger according to claim 4, characterized in that, The inner diameter of the first connector (41) is equal to the inner diameter of the third connector (43), the inner diameter of the first connector (41) is smaller than the inner diameter of the second connector (42), and the inner diameter of the second connector (42) is equal to the inner diameter of the fourth connector (44).

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