Heat exchange device, refrigeration and heating system and refrigeration box

Abstract

The utility model relates to biological sample storage technical field, concretely provides a heat exchange device, refrigeration and heating system and refrigeration box, aims at solving the problem that the refrigerant thermal property will exist the difference of the corresponding air outlet temperature between each evaporator when the existing double evaporator or multiple evaporator series connection, leads to the temperature difference inside the refrigeration box, and further can possibly have the influence to the medicine storage. For this purpose, the heat exchange device of the utility model includes multiple heat exchange modules, the heat exchange module includes multiple first heat exchange components, the first heat exchange medium flows through the first heat exchange component, and the first heat exchange component exchanges heat, under the refrigeration mode or heating mode, multiple first heat exchange components of multiple heat exchange modules are communicated with each other, make the first heat exchange medium alternately pass through multiple heat exchange modules, and make air respectively pass through the air outlet temperature of multiple heat exchange modules corresponding to be consistent, and further guarantee the temperature uniformity in the refrigeration box.

Description

Technical Field

[0001] This utility model relates to the field of biological sample storage technology, specifically providing a heat exchange device, a refrigeration and heating system, and a refrigerator. Background Technology

[0002] For large-capacity medical refrigerators, a single finned evaporator with a large surface area is typically used. The design and manufacturing process of large fins are relatively complex, resulting in higher material costs and consequently increasing the overall cost, sometimes exceeding that of two smaller finned evaporators. To address these issues, existing refrigeration systems employ dual or multiple evaporators connected in series or parallel. However, these systems still suffer from the following drawbacks: For refrigeration systems with dual or multiple evaporators in parallel, liquid separation has a significant impact on the temperature of the left and right evaporators. Therefore, the requirements for component selection and manufacturing processes are high, and it is difficult to control the temperature of the dual evaporators in mass-produced medical refrigerators to be similar. In refrigeration systems with dual or multiple evaporators connected in series, conventional evaporators typically have only one heat exchange coil. In systems with multiple evaporators connected in series, the coils of multiple evaporators are connected sequentially. This means that in one refrigeration cycle, each evaporator can only pass through sequentially. When the refrigeration system performs refrigeration operations, the temperature of the refrigerant entering the evaporator first is lower than the temperature of the refrigerant entering the next evaporator. This is because the refrigerant has thermodynamic properties and is constantly in a state of heat exchange as it passes through multiple evaporators. This difference in the degree of heat exchange between each evaporator and the refrigerant leads to differences in the temperature of the air blown out by each evaporator, affecting the temperature uniformity within the refrigerator and potentially impacting the storage of pharmaceuticals.

[0003] Accordingly, a new technical solution is needed in this field to solve the above-mentioned technical problems. Utility Model Content

[0004] The present invention aims to solve the above-mentioned technical problem, namely, to solve the problem that when existing dual or multiple evaporators are connected in series, due to the thermodynamic properties of the refrigerant, there will be differences in the corresponding air outlet temperature between each evaporator, resulting in temperature differences inside the refrigerator, which may affect the storage of medicines.

[0005] In a first aspect, the present invention provides a heat exchange device, the heat exchange device comprising a plurality of heat exchange modules, each heat exchange module comprising a plurality of first heat exchange components, a first heat exchange medium flowing through the first heat exchange components to exchange heat with the first heat exchange components; in a cooling mode or a heating mode, the plurality of first heat exchange components of the plurality of heat exchange modules are interconnected, so that the first heat exchange medium alternately passes through the plurality of heat exchange modules, thereby making the outlet air temperature of the air passing through the plurality of heat exchange modules tend to be consistent.

[0006] When employing the above technical solution, during cooling or heating, the first heat exchange medium alternately passes through multiple heat exchange modules according to the arrangement sequence of the multiple first heat exchange components. This minimizes the difference in outlet air temperature between the various heat exchange modules. Furthermore, a fan is installed to enhance airflow circulation, thereby improving the uniformity of the outlet air temperature. In addition, by using a structure of multiple heat exchange modules connected in series instead of the existing structure of a single heat exchange module, material costs are reduced, and design and manufacturing processes are simplified.

[0007] In a specific embodiment of the above heat exchange device, the number of the plurality of heat exchange modules is M; the plurality of first heat exchange components are respectively a first sub-heat exchange component, a second sub-heat exchange component, ..., an Nth sub-heat exchange component, the first sub-heat exchange components of the plurality of heat exchange modules are connected in series to form a first heat exchange branch, the second sub-heat exchange components are connected in series to form a second heat exchange branch, and the Nth sub-heat exchange component is connected in series to form an Nth heat exchange branch, the first heat exchange branch, the second heat exchange branch, ..., the Nth heat exchange branch are arranged in series; the inlet of the first heat exchange branch is the inlet of the first sub-heat exchange component of the first heat exchange module, and the outlet is the Mth outlet. The outlet of the first sub-heat exchange component of the heat exchange module; the inlet of the second heat exchange branch is the inlet of the second sub-heat exchange component of the Mth heat exchange module, and the outlet is the outlet of the second sub-heat exchange component of the first heat exchange module; when N is odd, the inlet of the Nth heat exchange branch is the inlet of the Nth sub-heat exchange component of the first heat exchange module, and the outlet is the outlet of the Nth sub-heat exchange component of the Mth heat exchange module; when N is even, the inlet of the Nth heat exchange branch is the inlet of the Nth sub-heat exchange component of the Mth heat exchange module, and the outlet is the outlet of the Nth sub-heat exchange component of the first heat exchange module.

[0008] In a specific embodiment of the above heat exchange device, the heat exchange module further includes a second heat exchange component, through which a second heat exchange medium flows and exchanges heat with the second heat exchange component, and the second heat exchange component is capable of exchanging heat with the first heat exchange component.

[0009] In a specific embodiment of the above heat exchange device, the second heat exchange component is configured as a heat exchange fin, and the first heat exchange component is disposed through the heat exchange fin.

[0010] In a specific embodiment of the above heat exchange device, there are two first heat exchange components, namely a first coil and a second coil, which are arranged in a left-right or up-down manner and pass through the heat exchange fins.

[0011] In a specific embodiment of the above heat exchange device, there are two heat exchange modules, namely a first heat exchange module and a second heat exchange module. The first coils of the first heat exchange module and the second heat exchange module are connected in series to form a first heat exchange branch, and the second coils are connected in series to form a second heat exchange branch. The first heat exchange branch and the second heat exchange branch are connected in series. The inlet of the first heat exchange branch is the inlet of the first coil of the first heat exchange module, and the outlet is the outlet of the first coil of the second heat exchange module. The inlet of the second heat exchange branch is the inlet of the second coil of the second heat exchange module, and the outlet is the outlet of the second coil of the first heat exchange module.

[0012] In a specific embodiment of the above heat exchange device, the heat exchange module further includes a fan, which is arranged toward the heat exchange fins.

[0013] In a second aspect, the present invention also provides a refrigeration and heating system, the refrigeration and heating system including the heat exchange device as described above.

[0014] In a third aspect, the present invention also provides a refrigerator box, the refrigerator box including a heat exchange device as described above, the heat exchange device being used to cool the refrigerator box.

[0015] In the specific embodiment of the above-mentioned refrigerator, the first heat exchange module and the second heat exchange module are arranged on the top of the refrigerator in a left-right distribution.

[0016] With the above technical solution, the first heat exchange medium alternately passes through the first and second heat exchange modules according to the arrangement of multiple coils, which can minimize the difference in surface temperature between the heat exchange modules. Specifically, the first heat exchange medium flows alternately through the coils of the first and second heat exchange modules. Although the heat exchange capacity of the first heat exchange medium gradually weakens, because the first heat exchange medium alternately passes through the first and second heat exchange modules, it flows through the second heat exchange module when the temperature of the first heat exchange medium is at its lowest and highest, and through the first heat exchange module when the temperature of the first heat exchange medium is between its highest and lowest. Although the surface temperature of different coils in each heat exchange module varies due to the temperature of the refrigerant, because the refrigerant flows alternately among the multiple heat exchange modules, as the air passes through the different coils in each heat exchange module in sequence, the overall outlet air temperature tends to be consistent after heat exchange with each heat exchange module, thus ensuring the temperature uniformity inside the refrigerator. Furthermore, a fan is installed on this basis to enhance airflow circulation, thereby improving the uniformity of the outlet air temperature. Attached Figure Description

[0017] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which: Figure 1 This is a front view of the refrigerator box of this utility model; Figure 2 This is a side sectional view of the refrigerator box of this utility model; Figure 3 This is a schematic diagram of the heat exchange module in the refrigerator of this utility model; Figure 4 This is a schematic diagram of the structure of the first coil and the second coil in the refrigerator of this utility model, which are arranged left and right. Figure 5 This is a schematic diagram of the structure of the first coil and the second coil in the refrigerator of this utility model, which are arranged vertically. Figure 6 This is a schematic diagram of the structure of one embodiment of the heat exchange device of this utility model; Figure 7 This is a schematic diagram of the working principle of the refrigerant circulation system of Embodiment 1 of the present invention in refrigeration mode; Figure 8 This is a partial working principle diagram of the refrigerant circulation system of Embodiment 2 of the refrigerator of this utility model in refrigeration mode; The components are as follows: 1. Refrigerated box; 2. Compressor; 3. First heat exchange device; 31. Heat exchange module; 31-1. First heat exchange module; 31-2. Second heat exchange module; 32. Heat exchange fins; 33. First heat exchange component; 33-1. First coil; 33-2. Second coil; 34. Fan; 34-1. First fan; 34-2. Second fan; 4. Second heat exchange device; 5. Filter; 6. Capillary tube; 7. Fan cover; 8. Compressor compartment. Detailed Implementation

[0018] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0019] It should be noted that in the description of this utility model, terms such as "left," "right," "up," and "down," which indicate direction or positional relationship, are based on the direction or positional relationship shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the relevant device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0020] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] In the field of large-capacity medical refrigerator technology, conventional evaporators use only one heat exchange coil. In refrigeration systems with multiple evaporators connected in series, the coils of multiple evaporators are connected sequentially. This means that in one refrigeration cycle, each evaporator can only pass through sequentially. When the refrigeration system performs refrigeration operation, the temperature of the refrigerant entering the evaporator first is lower than the temperature of the refrigerant entering the next evaporator. This is because the refrigerant has thermodynamic properties and is constantly in a state of heat exchange as it passes through multiple evaporators. This difference in the degree of heat exchange between each evaporator and the refrigerant leads to differences in the temperature of the air blown out by each evaporator, affecting the temperature uniformity inside the refrigerator and potentially impacting the storage of medicines.

[0022] To solve the above-mentioned technical problems, this utility model provides a heat exchange device. For example... Figures 1-3 As shown, the heat exchange device includes multiple heat exchange modules, each including multiple first heat exchange components 33 and multiple second heat exchange components. A first heat exchange medium flows through the first heat exchange component 33 and exchanges heat with it. A second heat exchange medium flows through the second heat exchange component and exchanges heat with it. The second heat exchange component can exchange heat with the first heat exchange component 33. The first heat exchange medium is a refrigerant.

[0023] The heat exchange device can be used for cooling or heating of the equipment. In either cooling or heating mode, the multiple first heat exchange components 33 of the multiple heat exchange modules are interconnected, so that the first heat exchange medium alternately passes through the multiple heat exchange modules 31, and the air outlet temperature of the air passing through the multiple heat exchange modules 31 tends to be consistent.

[0024] In the above structure, since each heat exchange module 31 includes multiple first heat exchange components 33, the first heat exchange medium alternately passes through multiple heat exchange modules 31, specifically, it alternately passes through multiple first heat exchange components 33 of multiple heat exchange modules 31. Although the heat exchange capacity of the first heat exchange medium gradually weakens, since the first heat exchange medium alternately passes through multiple heat exchange modules, the air outlet temperature tends to be consistent after the air exchanges heat with each heat exchange module.

[0025] The number of multiple heat exchange modules 31 is M; the multiple first heat exchange components 33 are respectively a first sub-heat exchange component, a second sub-heat exchange component, ..., an Nth sub-heat exchange component. The first sub-heat exchange components of the multiple heat exchange modules 31 are connected in series to form a first heat exchange branch, the second sub-heat exchange components are connected in series to form a second heat exchange branch, and the Nth sub-heat exchange component is connected in series to form an Nth heat exchange branch. The first heat exchange branch, the second heat exchange branch, ..., the Nth heat exchange branch are connected in series. The inlet of the first heat exchange branch is the inlet of the first sub-heat exchange component of the first heat exchange module, and the outlet is the Mth sub-heat exchange component. The outlet of the first sub-heat exchange component of the Mth heat exchange module; the inlet of the second heat exchange branch is the inlet of the second sub-heat exchange component of the Mth heat exchange module, and the outlet is the outlet of the second sub-heat exchange component of the first heat exchange module; when N is odd, the inlet of the Nth heat exchange branch is the inlet of the Nth sub-heat exchange component of the first heat exchange module, and the outlet is the outlet of the Nth sub-heat exchange component of the Mth heat exchange module; when N is even, the inlet of the Nth heat exchange branch is the inlet of the Nth sub-heat exchange component of the Mth heat exchange module, and the outlet is the outlet of the Nth sub-heat exchange component of the first heat exchange module.

[0026] In one specific embodiment, such as Figure 6 As shown, there are two heat exchange modules 31, namely the first heat exchange module 31-1 and the second heat exchange module 31-2. There are also two first heat exchange components, namely the first sub-heat exchange component and the second sub-heat exchange component. The first sub-heat exchange component is the first coil 33-1, and the second sub-heat exchange component is the second coil 33-2. The first coil 33-1 of the first heat exchange module 31-1 and the first coil 33-1 of the second heat exchange module 31-2 are connected in series to form the first heat exchange branch A. The second coil 33-2 of the first heat exchange module 31-1 and the second coil 33-2 of the second heat exchange module 31-2 are connected in series to form the second heat exchange branch B. The inlet of the first heat exchange branch A is the inlet of the first coil 33-1 of the first heat exchange module 31-1, and the outlet is the outlet of the first coil 33-1 of the second heat exchange module 31-2. The inlet of the second heat exchange branch B is the inlet of the second coil 33-2 of the second heat exchange module 31-2, and the outlet is the outlet of the second coil 33-2 of the first heat exchange module 31-1.

[0027] The first heat exchange medium alternately passes through the first coil 33-1 and the second coil 33-2 of the first heat exchange module 31-1 and the second heat exchange module 31-2, so that the air outlet temperature tends to be the same after exchanging heat with the first heat exchange module 31-1 and the second heat exchange module 31-2 respectively.

[0028] It should be noted that although the above description combines two heat exchange modules, and each heat exchange module has two sub-heat exchange components, i.e., two coils, this is not limiting. Those skilled in the art can set the number of heat exchange modules and the number of coils to be more than two as needed. Furthermore, the number of coils in each heat exchange module can be the same or different, and the heat exchange length of each coil in the same or different heat exchange modules can be the same or different. The number of coils and the specific heat exchange length of each coil are set according to actual needs, and this invention does not impose any limitations in this regard, as long as it ensures that the outlet air temperature of the air passing through each heat exchange module tends to be consistent during heat exchange.

[0029] like Figure 2 and Figure 3 As shown, the second heat exchange component is configured as heat exchange fins 32, and the second heat exchange medium is air. The first coil 33-1 and the second coil 33-2 are arranged horizontally or vertically through the heat exchange fins 32. It should be noted that the distribution of the first coil 33-1 and the second coil 33-2 on the heat exchange fins 32 is not limiting; those skilled in the art can use other distribution forms according to actual needs. Furthermore, although the above description is based on "the second heat exchange component is configured as heat exchange fins 32," it is not limiting. Those skilled in the art can use other heat exchange components 33 besides heat exchange fins 32, such as shell-and-tube heat exchange structures, plate heat exchange structures, etc. The corresponding second heat exchange medium can be water, brine, etc., as long as the second heat exchange medium can achieve heat exchange with the first heat exchange medium to achieve the function of cooling or heating.

[0030] like Figure 5 As shown, the heat exchange module also includes a fan 34, which is oriented toward the heat exchange fins 32 to ensure heat exchange efficiency.

[0031] This utility model also provides a refrigeration and heating system, which includes the heat exchange device described above.

[0032] like Figure 4 and Figure 5As shown, this utility model also provides a refrigerator box 1, which includes the heat exchange device described above, and the heat exchange device is used to cool the refrigerator box 1. The first heat exchange module 31-1 and the second heat exchange module 31-2 are arranged side-by-side on the top of the refrigerator box 1. Of course, the first heat exchange module 31-1 and the second heat exchange module 31-2 can also be arranged in other configurations besides the side-by-side arrangement described above, and their positions within the refrigerator box 1 can be adjusted according to actual needs by those skilled in the art. This utility model does not impose any limitations on this.

[0033] Furthermore, controlling the return air to first blow onto the coils with lower surface temperatures can, to some extent, avoid the problem of frost formation on the front surface of the heat exchanger. This not only improves heat exchange efficiency but also reduces the risk of icing. Specifically, the return air inlet is positioned corresponding to the coil with the lower temperature, ensuring that the return air blows onto it first. The coil with the lower temperature is where the refrigerant temperature is lowest immediately after throttling in the refrigeration system; therefore, the coil that receives the first flow of refrigerant at this temperature has the lowest temperature compared to other coils.

[0034] The following is combined with Figure 7 and Figure 8 The implementation methods of the refrigerator box 1 and its refrigeration system of this utility model will be described in detail.

[0035] Example 1 like Figure 7 As shown, the refrigeration system includes a compressor 2, a second heat exchange device 4, a filter 5, a capillary tube 6, and a first heat exchange device 3, which are interconnected to form a refrigerant circulation loop. The first heat exchange device 3 is located at the top of the refrigerator 1, and the compressor 2, the second heat exchange device 4, the filter 5, and the capillary tube 6 are located in the compressor compartment 8 at the bottom of the refrigerator 1.

[0036] The first heat exchange device 3 includes a first heat exchange module 31-1 and a second heat exchange module 31-2, which are arranged horizontally within the refrigerator 1. The first heat exchange module 31-1 includes coils a1 and a2 and a first fan 34-1. The second heat exchange module 31-2 includes coils a3 and a4 and a second fan 34-2. The coils are connected in the following order: coils a1, a4, a3, and a2 are connected sequentially. During the refrigeration cycle, the refrigerant flowing from the compressor 2 passes sequentially through the second heat exchange module 31-2, filter 5, and capillary tube 6, then sequentially through coils a1, a4, a3, and a2, finally flowing back to the compressor 2. The return air vent is positioned facing coil a1.

[0037] In this embodiment, M=2, N=2, coils a1 and a4 are the first heat exchange branch, and coils a2 and a3 are the second heat exchange branch. The inlet of the first heat exchange branch is the inlet of coil a1, and the outlet is the outlet of coil a4; the inlet of the second heat exchange branch is the inlet of coil a3, and the outlet is the outlet of coil a2.

[0038] A fan cover 7 is also provided on the top of the refrigerator 1. The fan cover 7 has an air outlet, and the position of the air outlet corresponds to the position of the first fan 34-1 and the second fan 34-2 respectively.

[0039] In the above structure, the first heat exchange medium alternately passes through the first heat exchange module 31-1 and the second heat exchange module 31-2 according to the arrangement order of the multiple coils, which can minimize the difference in surface temperature between the various heat exchange modules 31. Specifically, the first heat exchange medium alternately flows through the coils of the first heat exchange module 31-1 and the second heat exchange module 31-2. Although the heat exchange capacity of the refrigerant gradually weakens, because the first heat exchange medium alternately flows through the first heat exchange module 31-1 and the second heat exchange module 31-2, it flows through the second heat exchange module 31-2 when the temperature of the first heat exchange medium is at its lowest and highest, and flows through the first heat exchange module 31-1 when the temperature of the first heat exchange medium is between its highest and lowest. Although the surface temperature of different coils in each heat exchange module 31 varies due to the temperature of the refrigerant, because the refrigerant flows alternately between multiple heat exchange modules 31, as the air passes through the different coils in each heat exchange module 31 in sequence, the overall outlet air temperature tends to be consistent after heat exchange with each heat exchange module 31, thus ensuring the temperature uniformity inside the refrigerator 1. Furthermore, a fan 34 is installed on this basis to enhance airflow circulation, thereby improving the uniformity of the outlet air temperature.

[0040] In cooling mode, the actual temperature inside refrigerator 1 is monitored in real time. During the deceleration phase, when T0 > T... s When +p+ΔT, compressor 2 is controlled to run at maximum speed to achieve rapid cooling until T0 drops to T. s When -p, compressor 2 is stopped. During stable operation, the actual temperature T0 is controlled within [T s -p,T s Within the +p] interval, the two heat exchange modules 31 are controlled to start and stop simultaneously. That is, after compressor 2 starts, the first fan 34-1 and the second fan 34-2 run simultaneously; after compressor 2 stops, the first fan 34-1 and the second fan 34-2 stop simultaneously. When the actual temperature T0 ≥ T s When +p is applied, compressor 2 is started, and it operates at the set speed corresponding to the ambient temperature. This is to prevent compressor 2 from operating at high speed, resulting in large temperature inertia and poor temperature uniformity within the chamber. Here, T0 represents the actual temperature inside the chamber, typically between 2℃ and ambient temperature, and T...s The target cooling temperature inside the chamber is typically between 2℃ and 15℃. p is the set control deviation temperature inside the chamber, typically between 0.5℃ and 2℃. ΔT is the compressor starting temperature difference, typically between 0℃ and 3℃.

[0041] Example 2 The difference from Example 1 is that, as Figure 8 As shown, the first heat exchange module 31-1 includes coils a1, a2, and a3, and a first fan 34-1. The second heat exchange module 31-2 includes coils a4, a5, and a6, and a second fan 34-2. The coils of the first heat exchange module 31-1 and the second heat exchange module 31-2 are connected in sequence as follows: coils a1, a6, a5, a2, a3, and a4 are connected sequentially. During the refrigeration cycle, the refrigerant flowing out of the compressor 2 passes sequentially through the second heat exchange module 31-2, the filter 5, and the capillary tube 6, and then sequentially through coils a1, a6, a5, a2, a3, and a4, finally flowing back to the compressor 2.

[0042] In this embodiment, M=2, N=3, coils a1 and a6 form the first heat exchange branch, coils a2 and a5 form the second heat exchange branch, and coils a3 and a4 form the third heat exchange branch. The inlet of the first heat exchange branch is the inlet of coil a1, and the outlet is the outlet of coil a6; the inlet of the second heat exchange branch is the inlet of coil a5, and the outlet is the outlet of coil a2; the inlet of the third heat exchange branch is the inlet of coil a3, and the outlet is the outlet of coil a4.

[0043] It should be noted that the connection order of each coil and the corresponding refrigerant flow order through each coil in this embodiment are not limited. For example, the refrigerant flowing out of the compressor 2 can pass through the second heat exchange module 31-2, filter 5, and capillary tube 6 in sequence, and then pass through coil a1, coil a2, coil a6, coil a5, coil a4, and coil a3 in sequence, and finally flow back to the compressor 2, as long as the overall surface temperature of the two heat exchange modules is the same.

[0044] Based on the above-described embodiments, this utility model replaces the existing single heat exchange module structure with a structure of multiple heat exchange modules connected in series, thereby reducing material costs and simplifying design and manufacturing processes. During cooling or heating, the heat exchange medium alternately passes through multiple heat exchange modules according to the arrangement sequence of the multiple first heat exchange components 33, which can minimize the difference in outlet air temperature between each heat exchange module. Furthermore, a fan 34 is installed to enhance airflow circulation, thereby improving the uniformity of the outlet air temperature.

[0045] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A heat exchange device, characterized in that, The heat exchange device includes multiple heat exchange modules (31), and each heat exchange module (31) includes multiple first heat exchange components (33). A first heat exchange medium flows through the first heat exchange component (33) and exchanges heat with the first heat exchange component (33). In either cooling or heating mode, the multiple first heat exchange components (33) of the multiple heat exchange modules (31) are connected to each other. After the first heat exchange medium flows alternately through the multiple heat exchange modules (31), the air outlet temperature of the air passing through the multiple heat exchange modules (31) tends to be consistent.

2. The heat exchange device according to claim 1, characterized in that, The number of the multiple heat exchange modules (31) is M; The plurality of first heat exchange components (33) are respectively a first sub-heat exchange component, a second sub-heat exchange component, ..., an Nth sub-heat exchange component. The first sub-heat exchange components of the plurality of heat exchange modules (31) are connected in series to form a first heat exchange branch, the second sub-heat exchange components are connected in series to form a second heat exchange branch, and the Nth sub-heat exchange component is connected in series to form an Nth heat exchange branch. The first heat exchange branch, the second heat exchange branch, ..., the Nth heat exchange branch are connected in series. The inlet of the first heat exchange branch is the inlet of the first sub-heat exchange component of the first heat exchange module, and the outlet is the outlet of the first sub-heat exchange component of the Mth heat exchange module. The inlet of the second heat exchange branch is the inlet of the second sub-heat exchange component of the Mth heat exchange module, and the outlet is the outlet of the second sub-heat exchange component of the first heat exchange module; When N is an odd number, the inlet of the Nth heat exchange branch is the inlet of the Nth sub-heat exchange component of the first heat exchange module, and the outlet is the outlet of the Nth sub-heat exchange component of the Mth heat exchange module. When N is an even number, the inlet of the Nth heat exchange branch is the inlet of the Nth sub-heat exchange component of the Mth heat exchange module, and the outlet is the outlet of the Nth sub-heat exchange component of the first heat exchange module.

3. The heat exchange device according to claim 2, characterized in that, The heat exchange module (31) further includes a second heat exchange component, through which a second heat exchange medium flows and exchanges heat with the second heat exchange component, and the second heat exchange component is capable of exchanging heat with the first heat exchange component (33).

4. The heat exchange device according to claim 3, characterized in that, The second heat exchange component is configured as a heat exchange fin (32), and the first heat exchange component (33) is disposed through the heat exchange fin (32).

5. The heat exchange device according to claim 4, characterized in that, The first heat exchange component (33) consists of two parts, namely a first coil (33-1) and a second coil (33-2). The first coil (33-1) and the second coil (33-2) are arranged in a left-right or up-down manner and are installed through the heat exchange fins (32).

6. The heat exchange device according to claim 5, characterized in that, There are two heat exchange modules (31), namely a first heat exchange module (31-1) and a second heat exchange module (31-2). The first coil (33-1) of the first heat exchange module (31-1) and the second heat exchange module (31-2) are connected in series to form a first heat exchange branch, and the second coil (33-2) is connected in series to form a second heat exchange branch. The first heat exchange branch and the second heat exchange branch are connected in series. The inlet of the first heat exchange branch is the inlet of the first coil (33-1) of the first heat exchange module (31-1), and the outlet is the outlet of the first coil (33-1) of the second heat exchange module (31-2). The inlet of the second heat exchange branch is the inlet of the second coil (33-2) of the second heat exchange module (31-2), and the outlet is the outlet of the second coil (33-2) of the first heat exchange module (31-1).

7. The heat exchange device according to claim 4, characterized in that, The heat exchange module (31) also includes a fan (34) which is positioned toward the heat exchange fins (32).

8. A refrigeration and heating system, characterized in that, The refrigeration and heating system includes a heat exchange device as described in any one of claims 1 to 7.

9. A refrigerator, characterized in that, The refrigerator (1) includes a heat exchange device as described in any one of claims 1 to 8, the heat exchange device being used to cool the refrigerator (1).

10. The refrigerator according to claim 9, characterized in that, The first heat exchange module (31-1) and the second heat exchange module (31-2) are arranged on the top of the refrigerator (1) in a left-right distribution.

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