Heat conduction cylinder for portable refrigerating device and portable refrigerating device comprising heat conduction cylinder

Abstract

The utility model relates to a refrigerating device. In particular to a heat conduction cylinder for a portable refrigerating device and the portable refrigerating device comprising the heat conduction cylinder. The inner diameter of the lower portion of the inner wall of the heat conduction cylinder is smaller than the inner diameter of the upper portion of the inner wall of the heat conduction cylinder. The refrigerating device comprises a container and a cover; a semiconductor refrigeration assembly is arranged in the cover and comprises a semiconductor refrigeration piece, a heat dissipation piece and a heat absorption piece, the hot end face of the semiconductor refrigeration piece is attached to the lower bottom face of the heat dissipation piece, and the cold end face of the semiconductor refrigeration piece is attached to the upper surface of the heat absorption piece; the heat conduction cylinder is arranged in the container, and the upper end face of the heat conduction cylinder is attached to the lower end face of the heat absorption piece after the container is covered with the cover. The inner diameter of the lower part of the heat conduction cylinder is reduced, thereby effectively improving the refrigeration speed of the lower part.

Description

Technical Field

[0001] The utility model relates to a refrigeration device, in particular to a portable refrigeration device. Background Art

[0002] Portable refrigeration devices are in demand in more and more fields, especially for medicines that need to be refrigerated, such as insulin. Existing portable refrigeration devices mostly use semiconductor refrigeration components, which include semiconductor refrigeration plates, heat sinks and heat absorbers. The heat sinks and heat absorbers are arranged on two opposite sides of the semiconductor refrigeration plates. The heat sinks constitute the hot end of the semiconductor refrigeration components, and the heat absorbers constitute the cold end of the semiconductor refrigeration components. Placing a heat-conducting tube in a container is currently a more optimal heat conduction structure. The heat-conducting tube can conduct the heat in the container through the heat absorber, semiconductor refrigeration plate, and heat sink. However, the inner diameters of the upper and lower parts of the inner wall of the existing heat-conducting tube are the same. The cooling speed of the lower part of the heat-conducting tube in this structure is slow, and cannot meet the demand for overall rapid cooling. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a portable refrigeration device with rapid refrigeration.

[0004] The utility model is realized through the following technical solutions:

[0005] A heat-conducting cylinder for a portable refrigeration device, the portable refrigeration device comprises a container and a cover; a semiconductor refrigeration assembly is arranged in the cover, the semiconductor refrigeration assembly comprises a semiconductor refrigeration sheet, a heat sink and a heat absorption sheet, the hot end surface of the semiconductor refrigeration sheet is attached to the lower bottom surface of the heat sink, and the cold end surface of the semiconductor refrigeration sheet is attached to the upper surface of the heat absorption sheet; a heat-conducting cylinder capable of conducting heat is arranged in the container; after the cover and the container are closed, the upper part of the heat-conducting cylinder is attached to the lower part of the heat absorption sheet; the heat-conducting cylinder is in the shape of a cylinder with upper and lower openings or only the upper end opening, and the lower inner diameter of the inner wall of the heat-conducting cylinder is smaller than the upper inner diameter. The reduced lower inner diameter of the heat-conducting cylinder can effectively increase the cooling speed of the lower part.

[0006] Preferably, a transition surface whose inner diameter gradually decreases from top to bottom is provided in the middle of the inner wall of the heat-conducting tube, and the inner diameter of the upper part of the transition surface is the same as the inner diameter of the upper end of the transition surface, and the inner diameter of the lower part of the transition surface is the same as the inner diameter of the lower end of the transition surface. This structure not only reduces the inner diameter of the lower part of the heat-conducting tube and improves the cooling speed of the lower part, but also facilitates the processing of controlling the outer wall size. It is more suitable for the processing requirements that the upper part of the heat-conducting tube needs to be interference-fitted with the inner wall of the container.

[0007] Preferably, the inner wall of the heat-conducting tube is provided with a step surface, the lower inner diameter of the step surface is smaller than the upper inner diameter of the step surface, and the difference between the upper inner diameter of the step surface and the lower inner diameter of the step surface is less than or equal to 5 mm. The reduction of the lower inner diameter of the heat-conducting tube can effectively improve the cooling speed of the lower part. However, in order to balance the storage space in the heat-conducting tube, the difference between the upper inner diameter of the step surface and the lower inner diameter of the step surface is less than or equal to 5 mm, which is a better choice.

[0008] Preferably, the inner diameter of the inner wall of the heat-conducting tube gradually decreases from top to bottom, and the difference between the inner diameter of the upper end of the inner wall of the heat-conducting tube and the inner diameter of the lower end of the inner wall of the heat-conducting tube is less than or equal to 5 mm. This structure reduces the inner diameter of the lower part of the heat-conducting tube and ensures that the inner wall is smooth, making it easier to place items. The difference between the inner diameter of the upper end of the inner wall of the heat-conducting tube and the inner diameter of the lower end of the inner wall of the heat-conducting tube is less than or equal to 5 mm, which is a better choice.

[0009] A portable refrigeration device includes a container and a cover; a semiconductor refrigeration assembly is arranged in the cover, and the semiconductor refrigeration assembly includes a semiconductor refrigeration sheet, a heat sink and a heat absorber, the hot end surface of the semiconductor refrigeration sheet is in contact with the lower bottom surface of the heat sink, and the cold end surface of the semiconductor refrigeration sheet is in contact with the upper surface of the heat absorber; a heat-conducting tube is arranged in the container, and the upper end surface of the heat-conducting tube is in contact with the lower end surface of the heat absorber after the cover and the container are closed. The heat-conducting tube is in the shape of a tube with openings at the top and bottom or only at the top, and the lower inner diameter of the inner wall of the heat-conducting tube is smaller than the upper inner diameter. The reduced lower inner diameter of the heat-conducting tube can effectively increase the cooling speed of the lower part.

[0010] Furthermore, the outer edge of the heat absorbing element extends downward to form a side wall, and the inside of the side wall forms an auxiliary refrigeration device accommodating chamber. The auxiliary refrigeration device is a refrigeration fan, which can further improve the refrigeration effect and speed.

[0011] Furthermore, the outer wall of the heat-conducting tube is fixed to the inner wall of the container; the outer wall of the heat-conducting tube is fixed to the inner wall of the container by an interference fit sleeve; or the outer wall of the heat-conducting tube and the inner wall of the container are integrally formed; or the outer wall of the heat-conducting tube and the inner wall of the container are fixed by welding. The outer wall of the heat-conducting tube is fixed to the inner wall of the container, so that the heat-conducting tube can be in close contact with the heat sink for a long time and stably, and maintain a good cooling effect.

[0012] Furthermore, a boss is provided at the lower end of the inner wall of the container to limit the downward movement of the heat-conducting tube. The boss is provided at the lower end of the inner wall of the container. On the one hand, it is convenient for the heat-conducting tube to be quickly and accurately positioned when it is fixed. On the other hand, it can share the pressure of the heat-conducting tube on the inner wall, and also prevent the portable refrigeration device from accidentally falling and damaging the heat-conducting tube and the internal fixing structure and then moving downward, resulting in the heat-conducting tube and the heat-absorbing component being unable to be in close contact or out of contact, thereby affecting the refrigeration effect.

[0013] Furthermore, the upper end surface of the heat-conducting tube includes a heat-absorbing member fitting surface that is inclined inward from top to bottom on the inside, and the lower end surface of the heat-absorbing member includes a heat-conducting tube fitting surface that is inclined inward from top to bottom on the outside, and the heat-absorbing member fitting surface of the heat-conducting tube has the same inclination angle as the heat-absorbing member heat-conducting tube fitting surface. Setting the contact surface between the heat-conducting tube and the heat-absorbing member as an inclined surface increases the contact area and makes the contact more stable, thereby improving the cooling effect.

[0014] Furthermore, the inner diameter of the upper end of the heat-absorbing element contact surface of the heat-conducting tube is the same as the outer diameter of the upper end of the heat-absorbing element contact surface of the heat-conducting tube, or the inner diameter of the upper end of the heat-absorbing element contact surface of the heat-conducting tube is greater than the outer diameter of the upper end of the heat-absorbing element contact surface of the heat-conducting tube by less than 5 mm. After the lid and the container are closed, the upper end of the heat-absorbing element contact surface of the heat-conducting tube is flush with or slightly lower than the upper end of the heat-absorbing element contact surface of the heat-conducting tube, which is convenient for setting the contact and sealing device.

[0015] Furthermore, the inner diameter of the lower end of the heat-absorbing element contact surface of the heat-conducting tube is smaller than the outer diameter of the lower end of the heat-conducting tube contact surface of the heat-absorbing element. The lower end of the heat-conducting tube contact surface of the heat-absorbing element is lower than the lower end of the heat-conducting tube contact surface of the heat-absorbing element, so as to reserve a space to ensure that the contact surfaces of the heat-absorbing element and the heat-conducting tube are still in complete contact after the height of the contact surface between the heat-absorbing element and the heat-conducting tube decreases due to long-term wear.

[0016] Furthermore, the upper end surface of the heat-conducting tube also includes an outer flat top surface, and the flat top surface of the heat-conducting tube is flush with the top of the open end of the container; a sealing ring is sleeved on the outer side of the heat-absorbing element, and after the cover and the container are closed, the lower bottom surface of the sealing ring and the flat top surface of the heat-conducting tube and the top of the open end of the container are sealed and fitted. The above structure can better achieve stable sealing between the open end of the container, the heat-conducting tube and the heat-absorbing element.

[0017] As mentioned above, the present invention optimizes many aspects of the existing portable refrigeration device, thereby improving the refrigeration speed and effect as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 The utility model is a schematic structural diagram of an implementation scheme of a heat-conducting tube for a portable refrigeration device.

[0020] Figure 2 It is a cross-sectional view of a heat-conducting tube for a portable refrigeration device of the utility model.

[0021] Figure 3 for Figure 2 A magnified schematic diagram of point B

[0022] Figure 4 It is a schematic structural diagram of another embodiment of the heat-conducting tube for a portable refrigeration device of the utility model.

[0023] Figure 5 It is a structural schematic diagram of the portable refrigeration device of the utility model.

[0024] Figure 6 for Figure 5 An enlarged schematic diagram of point A.

[0025] Figure 7 for Figure 5 An enlarged schematic diagram of point B.

[0026] Figure 8 for Figure 5 An enlarged schematic diagram of point C.

[0027] Fig. 9 It is a three-dimensional diagram of the heat absorbing component of the refrigeration device of the utility model.

[0028] Fig.10 It is a cross-sectional view of the heat absorbing component of the refrigeration device of the utility model.

[0029] In the figure: 10, cover; 20, container; 21, boss; 201, outer wall of container; 202, interior of container; 30, semiconductor refrigeration assembly; 31, semiconductor refrigeration sheet; 32, heat sink; 33, heat absorber; 331, thermal tube fitting surface; 40, thermal tube; 41, upper part of thermal tube; 42, lower part of thermal tube; 401, heat absorber fitting surface; 402, flat top surface; 404, transition surface; 50, vacuum insulation layer; 70, sealing ring; Specific implementation plan

[0030] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] A heat conducting tube for a portable refrigeration device, such as Figure 1 As shown, the heat-conducting tube 40 is a tube with openings at the top and bottom or only at the top, and the inner diameter of the lower part 41 of the inner wall of the heat-conducting tube 40 is smaller than the inner diameter of the upper part 42. The inner diameter of the lower part 41 of the inner wall of the heat-conducting tube 40 is smaller than the inner diameter of the upper part 42, which can transfer the cold of the upper part 42 of the heat-conducting tube to the lower part 41 of the heat-conducting tube more quickly, so as to achieve the effect of rapid cooling and rapid refrigeration in the container 20. Figure 5-7 As shown, the portable refrigeration device includes a container 20 and a cover 10; a semiconductor refrigeration assembly is arranged in the cover 10, and the semiconductor refrigeration assembly includes a semiconductor refrigeration sheet 31, a heat sink 32 and a heat absorption sheet 33, the hot end surface of the semiconductor refrigeration sheet 31 is in contact with the lower bottom surface of the heat sink 32, and the cold end surface of the semiconductor refrigeration sheet 31 is in contact with the upper surface of the heat absorption sheet 33; a heat-conducting tube 40 capable of conducting heat is arranged in the container 20; after the cover 10 and the container 20 are covered, the upper part of the heat-conducting tube 40 is in contact with the lower part of the heat absorption sheet 33.

[0033] The inner diameter of the lower portion 41 of the inner wall of the heat-conducting tube 40 is smaller than the inner diameter of the upper portion 42, which can be achieved in the following three ways:

[0034] like Figure 1-3 As shown, a transition surface 404 with an inner diameter gradually decreasing from top to bottom is provided in the middle of the inner wall of the heat conductive tube 40 , the inner diameter of the upper part of the transition surface 404 is the same as the inner diameter of the upper end of the transition surface 404 , and the inner diameter of the lower part of the transition surface 404 is the same as the inner diameter of the lower end of the transition surface 404 .

[0035] like Figure 4 As shown, the inner wall of the heat-conducting tube 40 is provided with a step surface 403, the lower inner diameter of the step surface 403 is smaller than the upper inner diameter of the step surface 403, and the difference between the upper inner diameter of the step surface 403 and the lower inner diameter of the step surface 403 is less than or equal to 5 mm.

[0036] The inner diameter of the inner wall of the heat-conducting tube 40 gradually decreases from top to bottom, and the difference between the inner diameter of the upper end of the inner wall of the heat-conducting tube 40 and the inner diameter of the lower end of the inner wall of the heat-conducting tube 40 is less than or equal to 5 mm.

[0037] A portable refrigeration device, such as Figure 5-7 As shown, it includes a container 20 and a cover 10; a semiconductor refrigeration component 30 is arranged in the cover 10, and the semiconductor refrigeration component 30 includes a semiconductor refrigeration plate 31, a heat sink 32 and a heat absorption member 33, the hot end surface of the semiconductor refrigeration plate 31 is in contact with the lower bottom surface of the heat sink 32, and the cold end surface of the semiconductor refrigeration plate 31 is in contact with the upper surface of the heat absorption member 33; the aforementioned heat-conducting tube 40 is arranged in the container 20, and the upper end surface of the heat-conducting tube 40 is in contact with the lower end surface of the heat absorption member 33 after the cover 10 and the container 20 are covered.

[0038] like Fig. 9 , 10 As shown, the outer edge of the heat absorbing member 33 extends downward to form a side wall, and the inside of the side wall forms an auxiliary refrigeration device accommodating chamber 334. The auxiliary refrigeration device can be a refrigeration fan.

[0039] Preferably, the outer wall of the heat-conducting tube 40 is fixed to the inner wall of the container; the outer wall of the heat-conducting tube 40 is fixed to the inner wall 202 of the container by an interference fit; or the outer wall of the heat-conducting tube 40 is integrally formed with the inner wall 202 of the container; or the outer wall of the heat-conducting tube 40 is fixed to the inner wall 202 of the container by welding.

[0040] like Figure 5 , 8 As shown, a boss 21 is provided at the lower end of the inner wall of the container 20 to limit the downward movement of the heat-conducting tube 40.

[0041] like Figure 5 , 6 As shown, the upper end surface of the heat-conducting tube 40 includes a heat-absorbing component fitting surface 401 that is inclined from top to bottom and inward on the inner side, and the lower end surface of the heat-absorbing component 33 includes a heat-conducting tube fitting surface 331 that is inclined from top to bottom and inward on the outer side. The heat-absorbing component fitting surface 401 of the heat-conducting tube 40 has the same inclination angle as the heat-conducting tube fitting surface 331 of the heat-absorbing component 33.

[0042] like Figure 5 , 6 As shown, the upper inner diameter of the heat absorbing member fitting surface 401 of the heat conductive tube 40 is the same as the upper outer diameter of the heat conductive tube fitting surface 331 of the heat absorbing member 33, or the upper inner diameter of the heat absorbing member fitting surface 401 of the heat conductive tube 40 is greater than the upper outer diameter of the heat conductive tube fitting surface 331 of the heat absorbing member 33 by less than 5 mm; the lower inner diameter of the heat absorbing member fitting surface 401 of the heat conductive tube 40 is less than the lower outer diameter of the heat conductive tube fitting surface 331 of the heat absorbing member 33.

[0043] like Figure 5 , 6As shown, the upper end surface of the heat-conducting tube 40 also includes an outer flat top surface 402, and the flat top surface 402 of the heat-conducting tube 40 is flush with the top of the open end of the container 20; a sealing ring 70 is sleeved on the outer side of the heat-absorbing member 33, and after the cover 10 and the container 20 are covered, the lower bottom surface of the sealing ring 70 and the flat top surface 402 of the heat-conducting tube 40 are sealed and fitted with the top of the open end of the container 20.

[0044] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A heat-conducting cylinder for a portable refrigeration device, the portable refrigeration device comprising a container (20) and a cover (10); a semiconductor refrigeration assembly is arranged in the cover (10), the semiconductor refrigeration assembly comprises a semiconductor refrigeration sheet (31), a heat sink (32) and a heat absorption sheet (33), the hot end surface of the semiconductor refrigeration sheet (31) is in contact with the lower bottom surface of the heat sink (32), and the cold end surface of the semiconductor refrigeration sheet (31) is in contact with the upper surface of the heat absorption sheet (33); a heat-conducting cylinder (40) capable of conducting heat is arranged in the container (20); after the cover (10) and the container (20) are covered, the upper part of the heat-conducting cylinder (40) is in contact with the lower part of the heat absorption sheet (33), characterized in that: The heat-conducting tube is in the shape of a tube with openings at the top and bottom or only the top end being open, and the inner diameter of the lower part of the inner wall of the heat-conducting tube (40) is smaller than the inner diameter of the upper part.

2. According to claim 1, a heat-conducting tube for a portable refrigeration device is characterized in that: A transition surface (404) whose inner diameter gradually decreases from top to bottom is provided in the middle of the inner wall of the heat-conducting tube (40), the inner diameter of the upper part of the transition surface (404) being the same as the inner diameter of the upper end of the transition surface (404), and the inner diameter of the lower part of the transition surface (404) being the same as the inner diameter of the lower end of the transition surface (404).

3. The heat-conducting tube for a portable refrigeration device according to claim 1, characterized in that: The inner wall of the heat-conducting cylinder (40) is provided with a step surface (403), the lower inner diameter of the step surface (403) is smaller than the upper inner diameter of the step surface (403), and the difference between the upper inner diameter of the step surface (403) and the lower inner diameter of the step surface (403) is less than or equal to 5 millimeters.

4. The heat-conducting tube for a portable refrigeration device according to claim 1, characterized in that: The inner diameter of the inner wall of the heat-conducting tube (40) gradually decreases from top to bottom, and the difference between the inner diameter of the upper end of the inner wall of the heat-conducting tube (40) and the inner diameter of the lower end of the inner wall of the heat-conducting tube (40) is less than or equal to 5 millimeters.

5. A portable refrigeration device, characterized in that: The invention comprises a container (20) and a cover (10); a semiconductor refrigeration component (30) is arranged in the cover (10), and the semiconductor refrigeration component (30) comprises a semiconductor refrigeration sheet (31), a heat sink (32) and a heat absorption sheet (33); the hot end surface of the semiconductor refrigeration sheet (31) is in contact with the lower bottom surface of the heat sink (32), and the cold end surface of the semiconductor refrigeration sheet (31) is in contact with the upper surface of the heat absorption sheet (33); a heat-conducting tube (40) according to any one of claims 1 to 4 is arranged in the container (20), and when the cover (10) and the container (20) are covered, the upper end surface of the heat-conducting tube (40) is in contact with the lower end surface of the heat absorption sheet (33).

6. A portable refrigeration device according to claim 5, characterized in that: The outer edge of the heat absorbing component (33) extends downward to form a side wall, and the interior of the side wall forms an auxiliary refrigeration device accommodating chamber.

7. A portable refrigeration device according to claim 5, characterized in that: The outer wall of the heat-conducting tube (40) is fixed to the inner wall of the container; the outer wall of the heat-conducting tube (40) is fixed to the inner wall of the container by means of an interference fit sleeve; or the outer wall of the heat-conducting tube (40) and the inner wall of the container are integrally formed; or the outer wall of the heat-conducting tube (40) and the inner wall of the container are fixed by welding; and a boss (21) capable of limiting downward movement of the heat-conducting tube (40) is provided at the lower end of the inner wall of the container (20).

8. The portable refrigeration device according to claim 5, characterized in that: The upper end surface of the heat-conducting tube (40) comprises a heat-absorbing member fitting surface (401) which is inclined inwardly from top to bottom on the inner side, and the lower end surface of the heat-absorbing member (33) comprises a heat-conducting tube fitting surface (331) which is inclined inwardly from top to bottom on the outer side, and the heat-absorbing member fitting surface (401) of the heat-conducting tube (40) and the heat-conducting tube fitting surface (331) of the heat-absorbing member (33) have the same inclination angle.

9. A portable refrigeration device according to claim 8, characterized in that: The inner diameter of the upper end of the heat absorbing member fitting surface (401) of the heat conductive tube (40) is the same as the outer diameter of the upper end of the heat conductive tube fitting surface (331) of the heat absorbing member (33), or the inner diameter of the upper end of the heat conductive tube fitting surface (401) of the heat conductive tube (40) is greater than the outer diameter of the upper end of the heat conductive tube fitting surface (331) of the heat absorbing member (33) by less than 5 millimeters; the inner diameter of the lower end of the heat conductive tube fitting surface (401) of the heat conductive tube (40) is smaller than the outer diameter of the lower end of the heat conductive tube fitting surface (331) of the heat absorbing member (33).

10. The portable refrigeration device according to claim 8, characterized in that: The upper end surface of the heat-conducting tube (40) further comprises an outer flat top surface (402), and the flat top surface (402) of the heat-conducting tube (40) is flush with the top of the open end of the container (20); a sealing ring (70) is sleeved on the outer side of the heat-absorbing element (33), and when the cover (10) and the container (20) are closed, the lower bottom surface of the sealing ring (70) is sealed and fitted with the flat top surface (402) of the heat-conducting tube (40) and the top of the open end of the container (20).

Images