Capillary tube type cross-flow cold storage device

Abstract

The capillary tube type cross-flow cold storage device comprises a shell, the shell comprises a top plate and a bottom plate which are distributed up and down, two side plates are arranged between the top plate and the bottom plate, a two-phase capillary tube is connected between the top plate and the bottom plate, and a refrigeration capillary tube is connected between the side plates. A top two-phase cover plate is fixed to the top plate, a bottom two-phase cover plate is fixed to the lower end of the bottom plate, the top two-phase cover plate and the bottom two-phase cover plate are located above and below the two-phase capillary tubes respectively, and the outer sides of the two side plates are connected with a first refrigeration cover plate and a second refrigeration cover plate respectively. The two-phase capillary tube and the refrigeration capillary tube are arranged in the shell and are completely immersed in the phase change material, so that the phase change material is in full contact with the two-phase capillary tube and the refrigeration capillary tube, the heat exchange or refrigeration efficiency is improved, meanwhile, the structure of the device is improved, and the occupied space of the device is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of cold storage, in particular to a capillary cross-flow cold storage device. Background Art

[0002] Cold storage devices generally use a plate heat exchange structure with high heat exchange efficiency. In order to ensure that the cold and hot cavities have better "contact" with the cold storage material, and to ensure that the cold storage material can contact both the cold and the heat at the same time, a very complex cavity distribution relationship is required to ensure the performance of cold storage and cold release. Because the cold storage material uses solid / liquid phase change to absorb and release heat, solid materials do not have fluidity, and the thermal conductivity of phase change materials, whether solid or liquid, is very low. This causes the solidification of the phase change material to occur only on the wall of the cold cavity when storing cold. After a slight solidification layer, the heat transfer to the inside begins to slow down, and a long period of refrigeration is required for the cold storage material to complete solidification, which leads to low cold storage efficiency. The same is true when using cold conditions. Melting only occurs on the wall of the hot cavity and the cold storage material cavity. Once a melted layer of liquid appears, heat transfer from the liquid to the solid begins to slow down, resulting in reduced cold release efficiency. Therefore, the capillary cross-flow cold storage device is designed to make the phase change material fully contact with the fluid in the cavity through the capillary, and at the same time improve the structure to make the device occupy less space. Summary of the invention

[0003] The object of the present invention is to provide a capillary cross-flow cold storage device, in which a two-phase capillary and a refrigeration capillary are arranged in a shell, and the two-phase capillary and the refrigeration capillary are completely immersed in a phase change material, so that the phase change material is in full contact with the two-phase capillary and the refrigeration capillary, thereby improving the heat exchange or refrigeration efficiency, and at the same time improving the structure of the device and reducing the occupied space of the device.

[0004] The present invention provides the following technical solution: a capillary cross-flow cold storage device, comprising a shell, the shell comprising a top plate and a bottom plate distributed up and down, two side plates are arranged between the top plate and the bottom plate, the side plates are vertically distributed on the inner side of the top plate, a two-phase capillary is connected between the top plate and the bottom plate, a refrigeration capillary is connected between the side plates, a top two-phase cover plate is fixed on the top plate, a bottom two-phase cover plate is fixed at the lower end of the bottom plate, the top two-phase cover plate and the bottom two-phase cover plate are respectively located above and below the two-phase capillary, a two-phase inlet pipe is connected to the side surface of the top two-phase cover plate, a two-phase outlet pipe is connected to the side surface of the bottom two-phase cover plate, a first refrigeration cover plate and a second refrigeration cover plate are respectively connected to the outer sides of the two side plates, a refrigeration inlet pipe and a refrigeration outlet pipe are respectively connected to the upper end and the lower end of the side surface of the second refrigeration cover plate, and side covers are fixed on both sides of the shell.

[0005] According to the above technical solution, the two-phase capillaries are distributed in parallel left and right to form a two-phase tube layer, and the refrigeration capillaries are distributed in parallel up and down to form a refrigeration tube layer. The two-phase tube layer and the refrigeration tube layer are distributed with intervals in front and back, and the two-phase capillaries and the refrigeration capillaries are distributed with intervals in front and back and cross-distributed, so that the two-phase capillaries and the refrigeration capillaries are completely immersed in the phase change material, maintaining sufficient contact and improving the heat exchange efficiency.

[0006] According to the above technical solution, a first partition is formed in the first refrigeration cover plate, dividing the first refrigeration cover plate into a first space and a second space distributed vertically; a second partition and a third partition are formed in the second refrigeration cover plate, dividing the second refrigeration cover plate into a third space, a fourth space and a fifth space distributed vertically; the first space is connected to the third space through a refrigeration capillary tube, and the first space is also connected to the upper end of the fourth space through a refrigeration capillary tube; the refrigeration inlet pipe is connected to the third space, the upper end of the second space is connected to the lower end of the fourth space, the lower end of the second space is connected to the fifth space, and the refrigeration outlet pipe is connected to the fifth space; the first partition, the second partition and the third partition are used to make the liquid in the refrigeration inlet pipe flow in a serpentine shape, thereby increasing the contact area between the liquid and the phase change material and making the heat exchange more sufficient.

[0007] According to the above technical solution, grooves are provided on the edges of the upper and lower surfaces of the top plate, the edges of the inner and outer surfaces of the side plates, and the edges of the upper and lower surfaces of the bottom plate; the groove on the upper end of the top plate is used to buckle the top two-phase cover plate; the grooves on the lower end of the top plate, the inner wall of the side plate and the upper end of the bottom plate are used to install the side cover plate; the groove on the lower end of the bottom plate is used to buckle the bottom two-phase cover plate; the grooves on the outer wall of the side plate, the lower end of the top plate and the upper end of the bottom plate are used to buckle the first refrigeration cover plate or the second refrigeration cover plate; the top two-phase cover plate, the side cover plate and the bottom two-phase cover plate are positioned and installed by the grooves, thereby improving the installation efficiency.

[0008] According to the above technical solution, the refrigeration capillary and the two-phase capillary are both stainless steel tubes with an outer diameter of 0.7 mm and a wall thickness of 0.1 mm. The capillary tubes provide a strong pressure bearing capacity in the cavity, and because the capillary tubes have a small diameter and are densely arranged, the heat exchange is sufficient.

[0009] According to the above technical solution, through holes are provided on the upper and lower parts of the side cover plate, and the through holes can be sealed with silicone. The phase change material is injected through the upper through hole, and the phase change material is discharged through the lower through hole.

[0010] Compared with the prior art, the beneficial effects achieved by the present invention are: (1) The two-phase capillary tube and the refrigeration capillary tube are arranged in the shell, and the two-phase capillary tube and the refrigeration capillary tube are completely immersed in the phase change material, so that the phase change material is fully in contact with the two-phase capillary tube and the refrigeration capillary tube, thereby improving the heat exchange or refrigeration efficiency, and at the same time improving the structure of the device and reducing the occupied space of the device; (2) The two-phase capillary tube and the refrigeration capillary tube are cross-spaced and distributed so that the two-phase capillary tube and the refrigeration capillary tube can fully contact the phase change material, so that heat exchange and refrigeration can be carried out efficiently. In addition, the two-phase capillary tube and the refrigeration capillary tube can exchange heat through the other pipe, and the other pipe can even be used as a medium for auxiliary heat transfer, which greatly improves the cold storage efficiency and cold release efficiency. (3) The first partition, the second partition and the third partition are arranged, and the flow of the refrigeration capillary is designed into a four-flow structure, so that the fluid flows in a serpentine shape, the flow stroke is increased, the fluid is fully in contact with the phase change material, and the refrigeration efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a front view of the overall structure of the present invention; Figure 2 It is a three-dimensional diagram of the overall structure of the present invention; Figure 3 It is a front view of the internal structure of the present invention; Figure 4 is a three-dimensional diagram of the overall structure of the housing of the present invention; Figure 5 is a structural front view of the housing of the present invention; In the figure: 1. top two-phase cover plate; 11. two-phase inlet pipe; 2. bottom two-phase cover plate; 21. two-phase outlet pipe; 3. first refrigeration cover plate; 31. first partition plate; 4. second refrigeration cover plate; 41. refrigeration inlet pipe; 42. refrigeration outlet pipe; 43. second partition plate; 44. third partition plate; 5. side cover plate; 51. through hole; 6. shell; 61. top plate; 62. bottom plate; 63. side plate; 64. groove; 7. refrigeration capillary; 8. two-phase capillary; 10. first space; 20. second space; 30. third space; 40. fourth space; 50. fifth space. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0013] See also Figures 1 to 4 The present invention provides a technical solution: a capillary cross-flow cold storage device, comprising a shell 6, the shell 6 comprising a top plate 61 and a bottom plate 62 distributed up and down, two side plates 63 are arranged between the top plate 61 and the bottom plate 62, the side plates 63 are vertically distributed on the inner side of the top plate 61, the left and right ends of the top plate 61 are located on the outer side of the side plates 63, and the two ends of the bottom plate 62 are located on the outer side of the side plates 63, a two-phase capillary 8 is connected between the top plate 61 and the bottom plate 62, a refrigeration capillary 7 is connected between the side plates 63, the two-phase capillary 8 and the refrigeration capillary 7 are distributed in an array, and a top capillary 8 is fixed on the top plate 61. The two-phase cover plate 1 and the bottom end of the bottom plate 62 are fixed with a bottom two-phase cover plate 2. The top two-phase cover plate 1 and the bottom two-phase cover plate 2 are respectively located above and below the two-phase capillary 8. The top two-phase cover plate 1 and the bottom two-phase cover plate 2 are connected through the vertically distributed two-phase capillary 8. The side of the top two-phase cover plate 1 is connected with a two-phase inlet pipe 11, and the side of the bottom two-phase cover plate 2 is connected with a two-phase outlet pipe 21. A high-temperature fluid higher than the solidification point of the phase change material is introduced into the two-phase inlet pipe 11. The high-temperature fluid enters from the top two-phase cover plate 1 and flows out from the bottom two-phase cover plate 2 through the two-phase capillary 8. At the same time, the high-temperature fluid can be used as The condenser of the phase change heat exchange system melts the phase change material through the heat transfer of the high-temperature fluid, changes from solid to liquid, absorbs heat from the heat exchange system, and realizes condensation of the heat exchange system. The outer sides of the two side plates 63 are respectively connected with the first refrigeration cover plate 3 and the second refrigeration cover plate 4. The upper end and the lower end of the side of the second refrigeration cover plate 4 are respectively connected with the refrigeration inlet pipe 41 and the refrigeration outlet pipe 42. The refrigeration inlet pipe 41 is passed with a low-temperature fluid below the solidification point of the phase change material. Through the transfer of heat, the phase change material is solidified from liquid to solid, and the phase change material releases heat. The heat release of the solidification of the phase change material is used to realize the refrigeration. For the evaporation of the system, side covers 5 are fixed on both sides of the shell 6, and the space inside the shell 6 is sealed by the side covers 5. Phase change material is introduced into the cavity of the shell 6, and the two-phase capillary 8 and the refrigeration capillary 7 are completely immersed in the phase change material, so that the capillary can efficiently contact with the phase change material. When storing cold, heat exchange with the two-phase capillary 8 is achieved without dead angles. When cooling, heat exchange with the refrigeration capillary 7 is achieved without dead angles. At the same time, the structure of the device is reasonable, and the cold pipe and the hot pipe can be fully contacted with the phase change material without the need for heavy weight and large space, thereby greatly improving the heat exchange and refrigeration efficiency.

[0014] like Figure 3As shown, the two-phase capillaries 8 are distributed in parallel left and right to form a two-phase tube layer, and the refrigeration capillaries 7 are distributed in parallel up and down to form a refrigeration tube layer. The two-phase tube layer and the refrigeration tube layer are distributed in intervals front and back, and the two capillaries are cross-arranged outside. When the system performs any heat exchange work, the solidification and melting of the cold storage material can be carried out efficiently, and the cold and hot cavities can exchange heat through the other party's pipes. The other party's pipes can even be used as auxiliary heat transfer media. Therefore, the cold storage efficiency and refrigeration efficiency can be greatly improved, and the necessary storage and release performance can be achieved with a very small design margin.

[0015] like Figure 3 As shown, a first partition 31 is formed in the first refrigeration cover plate 3, and the first refrigeration cover plate 3 is divided into a first space 10 and a second space 20 distributed vertically. A second partition 43 and a third partition 44 are formed in the second refrigeration cover plate 4, and the second refrigeration cover plate 4 is divided into a third space 30, a fourth space 40 and a fifth space 50 distributed vertically. The first space 10 is connected to the third space 30 through the refrigeration capillary 7, and the first space 10 is also connected to the upper end of the fourth space 40 through the refrigeration capillary 7. The refrigeration inlet pipe 41 is connected to the third space 30, the upper end of the second space 20 is connected to the lower end of the fourth space 40, and the second The lower end of the space 20 is connected to the fifth space 50, and the refrigeration outlet pipe 42 is connected to the fifth space 50. By arranging the first partition 31, the second partition 43 and the third partition 44, the low-temperature fluid injected into the refrigeration inlet pipe 41 can enter the first space 10 from the third space 30 in sequence, then enter the fourth space 40 from the first space 10, then enter the second space 20 from the fourth space 40, and finally flow from the second space 20 to the fifth space 50, realizing the flow of four processes of the fluid, fully improving the contact between the low-temperature fluid and the phase change material, ensuring sufficient heat exchange of the cold storage material and efficient operation of the refrigeration system.

[0016] like Figure 5 As shown, grooves 64 are provided on the edges of the upper and lower surfaces of the top plate 61, the edges of the inner and outer surfaces of the side plates 63, and the edges of the upper and lower surfaces of the bottom plate 62. The groove 64 at the upper end of the top plate 61 is used to buckle the top two-phase cover plate 1, the grooves 64 at the lower end of the top plate 61, the inner wall of the side plate 63, and the upper end of the bottom plate 62 are used to install the side cover plate 5, the groove 64 at the lower end of the bottom plate 62 is used to buckle the bottom two-phase cover plate 2, the outer wall of the side plate 63, the lower end of the top plate 61, and the groove 64 at the upper end of the bottom plate 62 are used to buckle the first refrigeration cover plate 3 or the second refrigeration cover plate 4, and the grooves 64 are used to cooperate with the top two-phase cover plate 1, the bottom two-phase cover plate 2, the first refrigeration cover plate 3, or the second refrigeration cover plate 4 to improve the positioning and installation efficiency of the top two-phase cover plate 1, the bottom two-phase cover plate 2, the first refrigeration cover plate 3, and the second refrigeration cover plate 4. After positioning, the above-mentioned cover plate is completely connected to the shell 6 by welding, and the welding is full welding at the same time to make the fluid sealed to prevent leakage.

[0017] like Figure 3 and 4 As shown, the refrigeration capillary 7 and the two-phase capillary 8 are both stainless steel tubes with an outer diameter of 0.7 mm and a wall thickness of 0.1 mm. The capillary tubes provide the cavity of the shell 6 with a strong pressure bearing capacity and sufficient heat exchange.

[0018] like Figure 1 and 2 As shown, through holes 51 are provided on the upper and lower parts of the side cover plate 5, and the through holes can be sealed with silicone. The phase change material can be injected from the upper through hole 51 and discharged from the lower through hole 51. The shell 6 has a modular structure and multiple cold storage devices can be stacked for use.

[0019] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A capillary cross-flow cold storage device, comprising a shell, characterized in that: The shell includes a top plate and a bottom plate distributed up and down, two side plates are arranged between the top plate and the bottom plate, the side plates are vertically distributed on the inner side of the top plate, a two-phase capillary is connected between the top plate and the bottom plate, a refrigeration capillary is connected between the side plates, a top two-phase cover plate is fixed on the top plate, a bottom two-phase cover plate is fixed at the lower end of the bottom plate, the top two-phase cover plate and the bottom two-phase cover plate are respectively located above and below the two-phase capillary, a two-phase inlet pipe is connected to the side surface of the top two-phase cover plate, a two-phase outlet pipe is connected to the side surface of the bottom two-phase cover plate, a first refrigeration cover plate and a second refrigeration cover plate are respectively connected to the outer sides of the two side plates, a refrigeration inlet pipe and a refrigeration outlet pipe are respectively connected to the upper end and the lower end of the side surface of the second refrigeration cover plate, and side covers are fixed on both sides of the shell.

2. A capillary cross-flow cold storage device according to claim 1, characterized in that: The two-phase capillaries are parallelly distributed left and right to form a two-phase tube layer, and the refrigeration capillaries are parallelly distributed up and down to form a refrigeration tube layer. The two-phase tube layer and the refrigeration tube layer are spaced apart from each other in front and back.

3. The capillary cross-flow cold storage device according to claim 1, characterized in that: A first partition is formed in the first refrigeration cover plate, dividing the first refrigeration cover plate into a first space and a second space distributed vertically. A second partition and a third partition are formed in the second refrigeration cover plate, dividing the second refrigeration cover plate into a third space, a fourth space and a fifth space distributed vertically. The first space is connected to the third space through a refrigeration capillary tube, and the first space is also connected to the upper end of the fourth space through a refrigeration capillary tube. The refrigeration inlet pipe is connected to the third space, the upper end of the second space is connected to the lower end of the fourth space, the lower end of the second space is connected to the fifth space, and the refrigeration outlet pipe is connected to the fifth space.

4. The capillary cross-flow cold storage device according to claim 1, characterized in that: Grooves are provided on the edges of the upper and lower surfaces of the top plate, the edges of the inner and outer surfaces of the side plates, and the edges of the upper and lower surfaces of the bottom plate. The groove on the upper end of the top plate is used to buckle the top two-phase cover plate, the grooves on the lower end of the top plate, the inner wall of the side plate and the upper end of the bottom plate are used to install the side cover plate, the groove on the lower end of the bottom plate is used to buckle the bottom two-phase cover plate, and the grooves on the outer wall of the side plate, the lower end of the top plate and the upper end of the bottom plate are used to buckle the first refrigeration cover plate or the second refrigeration cover plate.

5. The capillary cross-flow cold storage device according to claim 1, characterized in that: The refrigeration capillary and the two-phase capillary are both stainless steel tubes with an outer diameter of 0.7 mm and a wall thickness of 0.1 mm.

6. A capillary cross-flow cold storage device according to claim 1, characterized in that: The upper part and the lower part of the side cover plate are both provided with through holes, and the through holes can be sealed with silicone.

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