Phase change heat storage and heat exchange device and heat dissipation equipment

Abstract

The utility model relates to the technical field of heat exchange equipment, and provides a phase change heat storage and exchange device and heat dissipation equipment, the phase change heat storage and exchange device comprises a blowing evaporation plate, the blowing evaporation plate is provided with an upper closing plate and a lower closing plate, and the upper closing plate is arranged above the lower closing plate in an attached mode; the upper cover plate is fixedly arranged above the upper plywood, the upper cover plate and the upper plywood are sealed to form a phase change cavity, and the phase change cavity is used for being filled with a phase change material; wherein an upper blowing-up sinking table is arranged in the upper closing plate, a lower blowing-up sinking table corresponding to the upper blowing-up sinking table is arranged on the lower closing plate, and blowing-up runners are arranged on the upper blowing-up sinking table and the lower blowing-up sinking table in an attached mode. And a traditional welding evaporator fin and pipeline structural design is replaced with the structure of the blowing evaporation plate, so that the overall thickness of the phase change heat storage and exchange device is effectively reduced. And the problem that the contact thermal resistance is increased due to a multi-layer structure is avoided. Therefore, the overall heat exchange effect of the phase change heat storage and exchange device is improved.

Description

Technical Field

[0001] This application relates to the technical field of heat exchange equipment, and particularly to a phase change heat storage heat exchange device and a heat dissipation device. Background Art

[0002] In order to reduce the energy consumption of air conditioners, existing intelligent control systems have carried out refined management of the operating states of air conditioners. Some precision computer room air conditioners have improved the energy efficiency ratio by improving refrigerant and compressor technologies. There are also some air conditioners that adopt the fluorine pump mode. When the outdoor temperature is relatively low, only the working medium pump is used to transfer the refrigerant, reducing the power consumption of the compressor. Nevertheless, by optimizing the structure of the heat exchange device with phase change materials, the energy consumption of air conditioners can still be further reduced.

[0003] However, current phase change material heat exchange devices usually add evaporator fins and evaporator pipes on the outer surface to enhance the heat exchange effect. However, since the evaporator fins and evaporator pipes are usually connected by welding, this design increases the overall thickness of the phase change material heat exchange device, resulting in an increase in contact thermal resistance and affecting the heat exchange efficiency.

[0004] Therefore, there are defects and deficiencies in the prior art, which need to be further improved and developed. Summary of the Utility Model

[0005] In view of the above deficiencies of the prior art, the purpose of this application is to provide a phase change heat storage heat exchange device and a heat dissipation device, aiming to solve the problem that the overall thickness of the phase change material heat exchange device in the prior art is relatively large, resulting in an increase in contact thermal resistance and poor heat exchange effect.

[0006] One technical solution adopted by this application to solve the technical problem is as follows: A phase change heat storage heat exchange device for air conditioner heat exchange, which includes:

[0007] An extruded evaporation plate, the extruded evaporation plate is provided with an upper composite plate and a lower composite plate, and the upper composite plate is disposed above the lower composite plate in a fitting manner;

[0008] An upper cover plate, the upper cover plate is fixedly disposed above the upper composite plate, and the upper cover plate and the upper composite plate are sealed to form a phase change cavity for loading phase change materials;

[0009] Wherein, an upper extruded sink is provided in the upper composite plate, and a lower extruded sink corresponding to the upper extruded sink is provided in the lower composite plate, and an extruded flow channel is disposed in a fitting manner between the upper extruded sink and the lower extruded sink.

[0010] Optionally, the extruded flow channel is sequentially provided with an inlet liquid section, a bending section, and an outlet liquid section. The inlet liquid section is for the cooling medium to flow in, the bending section is for extending the flow time of the cooling medium, and the outlet liquid section is for the cooling medium to flow out.

[0011] Optionally, the horizontal cross-section of the bent section is arranged in a wavy shape, a serpentine shape or an S shape.

[0012] Optionally, the liquid inlet section and the liquid outlet section are arranged in parallel at intervals, and the liquid inlet section and the liquid outlet section are arranged on the same side.

[0013] Optionally, the upper cover plate includes a cover plate body and a plurality of arc-shaped side walls, and the plurality of arc-shaped side walls are fixedly arranged at the edge of the cover plate body;

[0014] Optionally, a plurality of feeding holes are arranged on the arc-shaped side wall, and the plurality of feeding holes are all used for filling the phase change material into the phase change cavity.

[0015] Optionally, the filling amount of the phase change material accounts for 70% to 80% of the volume of the phase change cavity.

[0016] Optionally, the outer surface of the upper cover plate is arranged in a corrugated structure.

[0017] Optionally, the length dimension of the blown evaporation plate is set to be 1100 mm to 1200 mm, the width dimension of the blown evaporation plate is set to be 450 mm to 500 mm, and the width of the blown flow channel is set to be 10 mm.

[0018] Another technical solution adopted by the present application to solve the technical problem is as follows: A heat dissipation device includes the phase change heat storage and heat exchange device as described above.

[0019] Compared with the prior art, the present application provides a phase change heat storage and heat exchange device and a heat dissipation device. The phase change heat storage and heat exchange device replaces the traditional welded evaporator fin and pipe structure design by adopting the structure of the blown evaporation plate, effectively reducing the overall thickness of the phase change heat storage and heat exchange device. An integrated flow channel structure is blown between the upper cover plate and the lower cover plate, without additional welding, avoiding the problem of increased contact thermal resistance caused by the multi-layer structure. The arrangement of the flow channels of the blown evaporation plate enables the cooling medium to flow efficiently, ensuring that heat is quickly transferred to the phase change material in the phase change cavity, thereby improving the overall heat exchange effect of the phase change heat storage and heat exchange device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic perspective view of the phase change heat storage and heat exchange device provided in the present application;

[0021] Figure 2 is a schematic perspective exploded view of the phase change heat storage and heat exchange device provided in the present application;

[0022] Figure 3 is in the present application Figure 2 The enlarged schematic view of part A;

[0023] Figure 4 It is a top view of the phase change heat storage and heat exchange device provided in this application;

[0024] Figure 5 It is another three-dimensional exploded structural schematic diagram of the phase change heat storage and heat exchange device provided in this application.

[0025] Explanation of reference numerals:

[0026] 10. Phase change heat storage and heat exchange device; 11. Blown evaporation plate; 111. Upper combined plate; 112. Lower combined plate; 1111. Upper blown sink; 1121. Lower blown sink; 113. Blown flow channel; 1131. Liquid inlet section; 1132. Bent section; 1133. Liquid outlet section; 12. Upper cover plate; 121. Cover plate main body; 122. Arc-shaped side wall; 1221. Feeding hole. Detailed implementation manners

[0027] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0028] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0029] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0030] Please refer to Figure 1 and Figure 3 In the first embodiment of the present application, a phase change heat storage heat exchange device 10 for air conditioner heat exchange is provided. The phase change heat storage heat exchange device 10 is composed of a blown evaporation plate 11 and an upper cover plate 12. The blown evaporation plate 11 includes an upper composite plate 111 and a lower composite plate 112. The upper composite plate 111 and the lower composite plate 112 are processed by a blowing process. The upper composite plate 111 is blown to form an upper blown sink 1111, and the lower composite plate 112 is blown to form a lower blown sink 1121. A blown flow channel 113 is arranged in contact with the upper blown sink 1111 and the lower blown sink 1121. The wall surface of the blown flow channel 113 is relatively thin, thereby effectively improving the heat transfer efficiency. The blown flow channel 113 includes an inlet section 1131, a bending section 1132, and an outlet section 1133. The cooling medium flowing out of the air conditioner first flows in through the inlet section 1131. When the cooling medium passes through the bending section 1132, the flow path of the cooling medium is greatly extended, so that the flow time of the cooling medium is increased, and the cooling medium is fully contacted with the wall surface of the blown flow channel 113, thereby enhancing the heat exchange effect. The cooling medium finally discharges through the outlet section 1133. The upper cover plate 12 is hermetically connected to the upper composite plate 111 to form a phase change cavity. The phase change cavity is used to fill a phase change material. When the cooling medium flows in the blown flow channel 113, the heat released or absorbed by the cooling medium will trigger the phase change process of the phase change material. The phase change material changes from a solid state to a liquid state when absorbing heat, and changes from a liquid state to a solid state when releasing heat. This process can effectively store and release heat, thereby adjusting the indoor temperature.

[0031] Please refer to Figure 2 and Figure 3In some embodiments, the phase change heat storage and heat exchange device 10 includes an inflation evaporator plate 11 and an upper cover plate 12; the inflation evaporator plate 11 is provided with an upper closing plate 111 and a lower closing plate 112, the upper closing plate 111 is arranged on the upper side of the lower closing plate 112; the upper cover plate 12 is fixedly arranged on the upper side of the upper closing plate 111, the upper cover plate 12 and the upper closing plate 111 are sealed to form a phase change cavity, and the phase change cavity is used to fill the phase change material; wherein, the upper closing plate 111 is provided with The upper inflation sinker 1111, the lower closing plate 112 is provided with a lower inflation sinker 1121, the lower inflation sinker 1121 is arranged corresponding to the upper inflation sinker 1111, the upper inflation sinker 1111 and the lower inflation sinker 1121 are provided with an inflation flow channel 113, the inflation flow channel 113 is used to circulate the cooling medium, and then the overall thickness of the phase change heat storage heat exchange device 10 is effectively reduced by replacing the traditional welded evaporator fin and pipeline structure with the structure of the inflation evaporator plate 11. An integrated flow channel structure is formed by inflation between the upper closing plate 111 and the lower closing plate 112, without the need for additional welding, thereby avoiding the problem of increased contact thermal resistance caused by the multi-layer structure. The setting of the flow channel of the inflation evaporator plate 11 allows the cooling medium to flow efficiently, ensuring that the heat is quickly transferred to the phase change material in the phase change cavity, thereby improving the overall heat exchange effect of the phase change heat storage heat exchange device 10.

[0032] Please refer to Figure 1 In some embodiments, the upper cover plate 12 and the upper closing plate 111 are sealed and connected at their edges by welding to form an integral closed structure, thereby enhancing the pressure-bearing capacity of the deformation cavity.

[0033] Please refer to Figure 4 In some embodiments, the inflation channel 113 is sequentially provided with a liquid inlet section 1131, a bending section 1132 and a liquid outlet section 1133, the liquid inlet section 1131 is used for the cooling medium to flow in, the bending section 1132 is used to prolong the flow time of the cooling medium, and the liquid outlet section 1133 is used for the cooling medium to flow out, thereby being able to effectively control the flow path and time of the cooling medium, prolong the contact time between the cooling medium and the wall of the channel, thereby enhancing the heat transfer effect, and then improving the utilization efficiency of the phase change material and the overall heat exchange effect, further improving the overall heat exchange effect of the phase change heat storage and heat exchange device 10.

[0034] Please refer to Figure 4 In some embodiments, the horizontal cross-section of the bending section 1132 is set to be wavy, serpentine or S-shaped. By setting the bending section 1132 to be a wavy, serpentine or S-shaped horizontal cross-section, the flow path length of the cooling medium is increased, thereby increasing the heat exchange area, optimizing the heat exchange efficiency, and further improving the heat transfer effect.

[0035] Please refer to Figure 4 , in some embodiments, the liquid inlet section 1131 and the liquid outlet section 1133 are arranged in parallel at intervals, and the liquid inlet section 1131 and the liquid outlet section 1133 are arranged on the same side, thereby simplifying the overall structure of the phase change heat storage and heat exchange device 10, reducing the space of the phase change heat storage and heat exchange device 10, making the flow of the cooling medium in the heat exchange device more uniform, and further greatly improving the heat exchange effect of the phase change heat storage and heat exchange device 10.

[0036] Please refer to Figure 5 , in some embodiments, the upper cover plate 12 includes a cover plate main body 121 and a plurality of arc-shaped side walls 122. The plurality of arc-shaped side walls 122 are all fixedly arranged on the edge of the cover plate main body 121. Thereby, by arranging the arc-shaped side walls 122 on the edge of the upper cover plate 12, the structural strength of the upper cover plate 12 is enhanced, and the overall sealing performance of the device is improved. The arrangement of the arc-shaped side walls 122 can also optimize the internal pressure distribution, reduce stress concentration, and extend the service life of the phase change heat storage and heat exchange device 10.

[0037] Please refer to Figure 5 , in some embodiments, a plurality of feeding holes 1221 are arranged on the arc-shaped side walls 122. The plurality of feeding holes 1221 are all used for filling the phase change material into the phase change cavity, thereby simplifying the filling process of the phase change material, increasing the operation convenience, ensuring that the phase change material can be uniformly filled in the entire phase change cavity, avoiding the problem of reduced heat exchange performance caused by uneven filling, and further greatly improving the heat exchange effect of the phase change heat storage and heat exchange device 10.

[0038] Please refer to Figure 1 , in some embodiments, the filling amount of the phase change material accounts for 70% to 80% of the volume of the phase change cavity. Thereby, by controlling the filling amount of the phase change material within 70% to 80% of the volume of the phase change cavity, not only is the better state of the phase change material during the heat absorption and release process ensured, but also the damage to the phase change cavity caused by the expansion of the phase change material is avoided, and the service life of the phase change heat storage and heat exchange device 10 is extended.

[0039] In some embodiments, the outer surface of the upper cover plate 12 is arranged as a corrugated structure to further increase the contact area with indoor air, improve the natural convection heat exchange ability, thereby increasing the contact area with indoor air, enhancing the heat exchange ability of natural convection, and effectively enhancing air flow, enabling heat to be transferred from the phase change material to indoor air faster, and improving the overall heat exchange effect of the phase change heat storage and heat exchange device 10.

[0040] Please refer to Figure 1In some embodiments, the length dimension of the blowing evaporator plate 11 is set to 1100mm~1200mm, the width dimension of the blowing evaporator plate 11 is set to 450mm~500mm, and the width of the blowing channel 113 is set to 10mm. Then, by reasonably setting the dimensions of the blowing evaporator plate 11 and the blowing channel 113, the adaptability of the heat exchange device in the air-conditioning system is ensured, which not only improves the heat exchange performance of the phase change heat storage heat exchange device 10, but also optimizes the integration with the air-conditioning system, so that the phase change heat storage heat exchange device 10 can work efficiently in different application scenarios.

[0041] In some embodiments, the phase change material includes but is not limited to paraffin, ethylene glycol, crystalline salt, molten salt, etc., thereby improving the practicality and applicability of the phase change heat storage and heat exchange device 10.

[0042] In some embodiments, the production process of the inflation evaporation plate 11 is as follows. First, a suitable metal material (such as an aluminum plate or a copper plate) is selected. These materials have good thermal conductivity and plasticity, and the thickness is usually about 1 mm, which can meet the requirements of the inflation process. The selected metal sheet is cleaned to remove surface impurities, ensure that the surface of the sheet is clean, and prevent impurities from affecting the subsequent processing quality. If necessary, surface anti-corrosion treatment can be performed. Design and manufacture a mold for inflation. The mold must include an upper mold and a lower mold, and a preset sinker shape is provided in the upper and lower molds to form the shape of the flow channel. The size and shape of the mold are determined according to the product design requirements. The treated metal sheet is placed between the upper and lower molds. Pressure is applied to the metal sheet by a high-pressure gas or liquid medium (usually high-pressure nitrogen). The high-pressure gas causes the metal sheet to undergo plastic deformation, fills the sinker in the mold, and forms a preset flow channel structure. The pressure of the inflation process needs to be controlled, usually between 5MPa-8MPa, to ensure that the flow channel is formed while maintaining the uniform thickness of the sheet. The upper and lower plates 111 and 112 after inflation molding are welded together according to the design requirements and sealed to form a flow channel. The upper cover plate 12 is then sealed and connected to the upper plate 111 to form a phase change cavity. This process requires ensuring the quality of the welding joint to ensure the sealing and pressure bearing capacity of the product. Phase change material (such as paraffin or other solid-liquid phase change materials) is filled into the phase change cavity through the feed hole. The filling amount is usually controlled at 70%-80% of the phase change cavity to ensure the expansion space of the phase change material during the phase change process. The formed inflation evaporator plate 11 is subjected to pressure testing, sealing testing and heat exchange performance testing to ensure that the pressure bearing capacity, flow channel integrity and heat exchange effect of the product meet the design requirements. Furthermore, through the above-mentioned production process, an inflation evaporator plate 11 with a complex flow channel structure, good heat exchange performance and better pressure bearing capacity can be produced.

[0043] In the second embodiment of the present application, a heat dissipation device is provided. The heat dissipation device includes the phase change heat storage and heat exchange device as described above. The phase change heat storage and heat exchange device adopts a modular design, and the device can be conveniently integrated with the air conditioning system. While achieving efficient heat exchange, it reduces the energy consumption of the air conditioning system, and further greatly improves the heat dissipation performance and energy efficiency ratio of the heat dissipation device.

[0044] In summary, the present application provides a phase change heat storage and heat exchange device and a heat dissipation device. The phase change heat storage and heat exchange device includes a blown evaporation plate. The blown evaporation plate is provided with an upper composite plate and a lower composite plate. The upper composite plate is disposed above the lower composite plate; an upper cover plate is fixedly disposed above the upper composite plate. The upper cover plate and the upper composite plate are sealed to form a phase change cavity for filling a phase change material. Among them, an upper blown sink is provided in the upper composite plate, and a lower blown sink corresponding to the upper blown sink is provided in the lower composite plate. The upper blown sink and the lower blown sink are provided with a blown flow channel in a fitting manner. Further, by adopting the structure of the blown evaporation plate to replace the traditional welded evaporator fin and pipe structure design, the overall thickness of the phase change heat storage and heat exchange device is effectively reduced. An integrated flow channel structure is blown between the upper composite plate and the lower composite plate without additional welding, avoiding the problem of increased contact thermal resistance caused by multiple-layer structures. The setting of the flow channel of the blown evaporation plate enables the cooling medium to flow efficiently, ensuring that heat is quickly transferred to the phase change material in the phase change cavity, thereby improving the overall heat exchange effect of the phase change heat storage and heat exchange device.

[0045] It should be understood that the application of the present application is not limited to the above examples. For those of ordinary skill in the art, improvements or transformations can be made according to the above description. All such improvements and transformations should fall within the protection scope of the appended claims of the present application.

Claims

1. A phase-change heat storage and heat exchange device for air conditioning heat exchange, characterized in that: include: An inflation evaporation plate, wherein the inflation evaporation plate is provided with an upper closing plate and a lower closing plate, wherein the upper closing plate is arranged on top of the lower closing plate; An upper cover plate, wherein the upper cover plate is fixedly arranged above the upper closing plate, and the upper cover plate and the upper closing plate are sealed to form a phase change cavity, and the phase change cavity is used to fill the phase change material; Among them, the upper closing plate is provided with an upper inflation sinker, and the lower closing plate is provided with a lower inflation sinker corresponding to the upper inflation sinker, and the upper inflation sinker and the lower inflation sinker are fitted with inflation channels.

2. The phase-change heat storage and heat exchange device according to claim 1, characterized in that: The inflation flow channel is sequentially provided with a liquid inlet section, a bending section and a liquid outlet section, the liquid inlet section is used for the cooling medium to flow in, the bending section is used to prolong the cooling medium flow time, and the liquid outlet section is used for the cooling medium to flow out.

3. The phase-change heat storage and heat exchange device according to claim 2, characterized in that: The horizontal cross section of the bending section is configured to be wavy, serpentine or S-shaped.

4. The phase-change heat storage and heat exchange device according to claim 2, characterized in that: The liquid inlet section and the liquid outlet section are arranged in parallel and spaced apart, and the liquid inlet section and the liquid outlet section are arranged on the same side.

5. The phase-change heat storage and heat exchange device according to claim 1, characterized in that: The upper cover plate comprises a cover plate body and a plurality of arc-shaped side walls, and the plurality of arc-shaped side walls are fixedly arranged on the edge of the cover plate body.

6. The phase-change heat storage and heat exchange device according to claim 5, characterized in that: A plurality of material inlet holes are arranged on the arc-shaped side wall, and the plurality of material inlet holes are used to fill the phase change cavity with phase change material.

7. The phase-change heat storage and heat exchange device according to claim 6, characterized in that: The filling amount of the phase change material accounts for 70% to 80% of the volume of the phase change cavity.

8. The phase-change heat storage and heat exchange device according to claim 1, characterized in that: The outer surface of the upper cover plate is arranged as a corrugated structure.

9. The phase-change heat storage and heat exchange device according to claim 1, characterized in that: The length dimension of the inflation evaporation plate is set to 1100 mm to 1200 mm, the width dimension of the inflation evaporation plate is set to 450 mm to 500 mm, and the width of the inflation flow channel is set to 10 mm.

10. A heat dissipation device, characterized in that: The heat dissipation device comprises the phase-change heat storage and heat exchange device according to any one of claims 1 to 9.

Images