Heat exchange assembly for forced convection and heat exchange unit

Abstract

The utility model relates to a heat exchange assembly for forced convection and a heat exchange unit. The heat exchange assembly comprises a housing, a flexible heat exchanger and forced convection equipment, the flexible heat exchanger is arranged in the housing and comprises an inlet collecting pipe, channel pipelines, a flexible base layer and an outlet collecting pipe, the channel pipelines are arranged between the inlet collecting pipe and the outlet collecting pipe in parallel, the channel pipelines are arranged on the flexible base layer, and the forced convection equipment is arranged on the flexible base layer. The flexible heat exchanger is bent to form a channel for air circulation. The heat exchanger has the technical advantages of being high in heat exchange efficiency, low in noise and capable of saving energy consumption.

Description

Technical Field

[0001] The present application relates to a heat exchange component and a heat exchange unit for forced convection, and is applicable to the technical field of heat exchange equipment. Background Art

[0002] At present, air source heat exchange units generally adopt the method of rigid heat exchange tubes to strengthen convection, that is, the fan is used to disturb the air to generate airflow and exchange heat with the rigid heat exchanger surface. The forced convection heat transfer performance generally has three key elements, namely the heat transfer coefficient, the heat transfer area, and the heat transfer temperature difference. In certain occasions, the heat transfer temperature difference is generally determined, so adjusting the heat transfer coefficient and the heat transfer area is a conventional means to improve the heat transfer performance of the heat exchanger. The improvement of the heat transfer coefficient is generally achieved by increasing the speed of air flow, that is, the wind speed, which often brings wind noise. If the wind noise is further increased, it will cause discomfort to the user. At the same time, the wind speed increases to a certain value, and further increase will have limited improvement on the heat transfer coefficient. Therefore, in view of the wind noise and improvement restrictions, the heat exchanger unit will form a reasonable matching relationship between the wind speed generated by the fan and the heat exchanger.

[0003] When the heat exchange temperature difference and heat transfer coefficient have been determined, increasing the heat exchange area is the most effective means. In actual technology, since rigid heat exchange tubes are used, the heat exchange area is achieved through the outer surface of the heat exchange tubes. However, the diameter of a rigid heat exchanger is usually relatively large, so its specific surface area is relatively small, resulting in a smaller heat exchange area. On the other hand, the existing rigid heat exchange tubes such as those in air conditioners or refrigerators are arranged in a single heat exchange tube spacing manner, and no regular ventilation channels are formed between the heat exchange tubes. When forced convection equipment is used to blow air, the air still flows disorderly between the heat exchange tubes, and no concentrated ventilation effect is formed, resulting in low heat exchange efficiency. When the heat exchange area is small or the heat exchange efficiency is low, the cost to achieve the same heat exchange effect will naturally increase.

[0004] Therefore, the heat exchange assembly formed by using rigid heat exchange tubes to strengthen convection in the prior art has the technical defects of low heat exchange efficiency and high cost. Utility Model Content

[0005] The purpose of the present application is to design a heat exchange component and a heat exchange unit for forced convection. By replacing the rigid heat exchange tubes in the existing forced convection heat exchange component with a flexible heat exchanger with a flexible base, the heat exchange area of ​​the heat exchange component is increased while reducing the cost of the heat exchange component.

[0006] The present application relates to a heat exchange component for forced convection, comprising a cover shell, a flexible heat exchanger and a forced convection device, wherein the flexible heat exchanger is arranged in the cover shell, the flexible heat exchanger comprises an inlet header, a channel pipeline, a flexible base layer and an outlet header, the channel pipeline is arranged in parallel between the inlet header and the outlet header, the channel pipeline is arranged on the flexible base layer, and the flexible heat exchanger is bent to form a channel for air circulation.

[0007] In which, the cover shell may be provided with a grille for ventilation; a compressor and a throttle valve may be provided in the cover shell, and the compressor and the throttle valve may be connected to the flexible heat exchanger; a controller may be provided in the cover shell, and the controller may be connected to the compressor and the throttle valve; a support frame may be provided in the cover shell, and the flexible heat exchanger may be fixed in the cover shell through the support frame; a baffle may be provided inside at least one of the inlet header and the outlet header; the channel formed by bending the flexible heat exchanger may be unevenly arranged; the diameter of the channel pipeline may be 0.5-4mm, and the diameter of the channel pipeline is 0.5-1mm.

[0008] The present application also relates to a heat exchange unit, comprising at least one heat exchange component.

[0009] The present application proposes a heat exchange assembly for forced convection provided with a flexible heat exchanger. The flexible heat exchanger is formed into a circuitous structure by utilizing the easy-to-fold and bend characteristics of the flexible heat exchanger. The flexible base of the flexible heat exchanger is kept at a certain distance to form a channel for air circulation. At the same time, forced convection equipment is used to blow air into the air circulation channel, so that the heat exchange efficiency of the flexible heat exchanger is further improved. The present application has the technical advantages of high heat exchange efficiency, low noise and energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic diagram showing the structure of a heat exchange component for forced convection according to the present application.

[0011] Figure 2 A schematic diagram showing a heat exchange system composed of heat exchange components of the present application.

[0012] Figure 3 A schematic diagram showing the flexible heat exchanger of the present application.

[0013] Figure 4a This is a schematic diagram of the arrangement of the flexible heat exchanger of the present application.

[0014] Figure 4b This is another schematic diagram of the arrangement of the flexible heat exchanger of the present application.

[0015] Figure 4c This is another schematic diagram of the arrangement of the flexible heat exchanger of the present application. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present application more clear, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0017] The present application relates to a heat exchange component for forced convection, such as Figure 1 As shown, the flexible heat exchanger 1 and the forced convection device are both arranged in a housing 3, and a grille 4 for ventilation may also be provided on the housing 3. The forced convection device may adopt a fan 2, and the airflow generated by the fan 2 realizes heat exchange in the flexible heat exchanger 1. In addition to being the installation base of the flexible heat exchanger 1, the fan 2 and the grille 4, the housing 3 can also be isolated from the outside world to prevent rainwater, dirt, dust and the like from entering. The grille 4 is the main channel for the fan 2 to inhale and blow out the airflow, which can prevent foreign matter, dust and the like from entering the heat exchange structure and affecting the operation of the fan 2, and further prevent dust from accumulating on the surface of the flexible heat exchanger 1.

[0018] The fan 2 can be installed on the upper part or the lower part of the flexible heat exchanger 1. In order to meet the installation size requirements of the equipment platform, the flexible heat exchanger 1 can also be placed horizontally. In this case, the fan 2 can be installed on the left or right side of the flexible heat exchanger. The wind generated by the fan 2 exchanges heat with the flexible heat exchanger 1 in a horizontal blowing manner. In order to discharge the defrost water of the flexible heat exchanger 1 smoothly during refrigeration, the flexible heat exchanger 1 can be tilted when placed horizontally.

[0019] like Figure 2 As shown, a compressor 5, a throttle valve 6 and a controller 7 can also be installed in the housing 3. The compressor 5 and the throttle valve 6 are connected to the flexible heat exchanger. The existing technology can be used for the specific purpose and will not be described in detail. Two or more heat exchange components of the present application are combined and connected with pipelines, and installed inside and outside the closed three-dimensional space 8 required for cooling and heating to form a heat exchange unit. The closed space is heated outside and released inside by circulating the refrigerant, or cooled outside and cooled inside.

[0020] like Figure 3 As shown, the flexible heat exchanger 1 of the present application includes an inlet header 11, a channel pipeline 12, a flexible base layer 13, and an outlet header 14. The channel pipeline 12 is arranged in parallel between the inlet header 11 and the outlet header 14, and the channel pipeline 12 is arranged on the flexible base layer 13. The channel pipeline 12 of the present application can adopt a heat exchange pipeline with a diameter of 0.5-4mm, especially a diameter of 0.5-1mm. In addition, with the cooperation of the flexible base layer 13, the flexible heat exchanger 1 of the present application can be freely bent and folded.

[0021] During operation, the refrigerant flows in from the inlet header 11 and is distributed in the channel pipe 12, and then is collected in the outlet header 14 and flows out of the flexible heat exchanger 1. A flexible base layer 13 with good conductivity is provided outside the channel pipe 12. The channel pipe 12 receives the heat of the refrigerant circulating inside it and conducts it to the flexible base layer 13, so that the flexible base layer forms a uniform temperature field, thereby increasing the heat exchange area. Preferably, a baffle 15 can also be provided inside the inlet header 11 and the outlet header 14 to change the direction of the refrigerant in the channel pipe 12 and improve its uniform distribution in the channel pipe 12.

[0022] In this application, the flexible heat exchanger 1 can be bent into Figure 4a , 4b and the shape in 4c. According to the specific conditions of the equipment installation platform space and the installation position in the enclosed space, the bent shape of the flexible heat exchanger 1 can be a triangle and a polygon, or it can be a circle or an ellipse. Taking into account that the flexible heat exchanger is relatively soft, a support frame 16 can be used to maintain the channel size formed by the heat exchange area. In the present application, since the flexible heat exchanger 1 is provided with a flexible base layer 13, a channel for air circulation can be formed between the bent flexible base layers 13, so that the flexible heat exchanger 1 of the present application and the forced convection device form a good match. On the one hand, the bent flexible heat exchanger forms a plurality of ventilation channels in a regular arrangement. On the other hand, the forced convection device concentrates the air blowing inside each ventilation channel, so that the air can flow concentratedly and at high speed inside each ventilation channel, thereby greatly improving the heat exchange efficiency. As Figure 4c As shown, the spacing between the flexible heat exchangers can also be uneven to meet the different air flow rates in different heat exchange spaces. For example, according to the characteristics of high velocity in the middle and low velocity on both sides of the fluid flow, the spacing between the flexible heat exchanger 1 can be smaller in the middle and larger on both sides when it is bent.

[0023] The present application proposes a heat exchange assembly for forced convection provided with a flexible heat exchanger. The flexible heat exchanger is formed into a circuitous structure by utilizing the easy-to-fold and bend characteristics of the flexible heat exchanger. The flexible bases of two adjacent flexible heat exchangers in the circuitous structure maintain a certain distance, and this distance constitutes a channel for the wind generated by the fan to exchange heat with the flexible heat exchanger. Since the flexible heat exchanger has a large heat exchange area, the wind speed generated by the fan can be reduced while meeting the heat exchange requirement, thereby reducing wind noise. While reducing the wind speed, the operating load of the fan is further reduced, and the fan achieves energy saving. On the other hand, the channel pipes of the flexible heat exchanger are connected in parallel, which reduces the flow resistance of the refrigerant, reduces the operating load of the compressor of the heat exchange unit, and achieves energy-saving operation of the compressor.

[0024] Although the implementation methods disclosed in this application are as above, the contents described are only implementation methods adopted for facilitating the understanding of this application, and are not intended to limit this application. Any technician in the technical field to which this application belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in this application, but the scope of patent protection of this application shall still be based on the scope defined in the attached claims.

Claims

1. A heat exchange component for forced convection, characterized in that: It includes a cover shell, a flexible heat exchanger and a forced convection device. The flexible heat exchanger is arranged in the cover shell. The flexible heat exchanger includes an inlet header, a channel pipeline, a flexible base layer and an outlet header. The channel pipeline is arranged in parallel between the inlet header and the outlet header. The channel pipeline is arranged on the flexible base layer. The flexible heat exchanger is bent to form a channel for air circulation.

2. The heat exchange assembly according to claim 1, characterized in that: The cover shell is provided with a grille for ventilation.

3. The heat exchange assembly according to claim 1, characterized in that: A compressor and a throttle valve are also arranged in the casing, and the compressor and the throttle valve are communicated with the flexible heat exchanger.

4. The heat exchange assembly according to claim 3, characterized in that: A controller is also arranged in the housing, and the controller is connected with the compressor and the throttle valve.

5. The heat exchange assembly according to claim 1, characterized in that: A support frame is also provided in the housing, and the flexible heat exchanger is fixed in the housing through the support frame.

6. The heat exchange assembly according to any one of claims 1 to 5, characterized in that: A baffle is disposed inside at least one of the inlet header and the outlet header.

7. The heat exchange assembly according to any one of claims 1 to 5, characterized in that: The channels formed by bending the flexible heat exchanger are unevenly arranged.

8. The heat exchange assembly according to any one of claims 1 to 5, characterized in that: The diameter of the channel pipeline is 0.5-4 mm.

9. The heat exchange assembly according to claim 8, characterized in that: The diameter of the channel pipeline is 0.5-1 mm.

10. A heat exchange unit, comprising at least one heat exchange component, characterized in that: The heat exchange component is a heat exchange component according to any one of claims 1-9.

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