Portable refrigeration device

Abstract

The utility model relates to a refrigerating device. The portable refrigeration 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; a vacuum heat preservation layer is arranged between the inner wall of the container and a shell of the container, a heat conduction cylinder is arranged in the container, and the outer wall of the heat conduction cylinder is fixed to the inner wall of the container. After the cover covers the container, the upper end face of the heat conduction cylinder is attached to the lower end face of the heat absorption piece. The outer wall of the heat conduction cylinder is fixed with the inner wall of the container, so that the heat conduction cylinder can stably and tightly contact with the heat dissipation piece for a long time, and a good cold conduction effect is kept.

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 existing heat-conducting tubes are all placed in the container and are not fixed to the inner wall of the container. This makes it easy for the heat-conducting tube to deviate in the horizontal and vertical directions, especially after long-term use and wear. If the heat-conducting tube is not in close contact with the heat sink, it will cause discontinuous refrigeration and poor effect. Utility Model Content

[0003] In view of the above-mentioned deficiencies of the prior art, the purpose of the utility model is to provide a portable refrigeration device in which a heat-conducting tube is fixed to the inner wall of a container, so that the heat-conducting tube can be in close contact with the heat sink for a long time and stably, thereby maintaining a good cooling effect.

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

[0005] A portable refrigeration device includes a container and a cover; a semiconductor refrigeration assembly is arranged in the cover, 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 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 absorber; a vacuum insulation layer is provided between the inner wall of the container and the outer shell of the container, a heat-conducting tube is arranged in the container, and the outer wall of the heat-conducting tube is fixed to the inner wall of the container; after the cover and the container are closed, the upper end surface of the heat-conducting tube is attached to the lower end surface of the heat absorber. 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 a good cooling effect can be maintained.

[0006] Furthermore, the outer wall of the heat-conducting tube is fixed to the inner wall of the container by means of interference fit. Pressing the heat-conducting tube into the container from the upper end of the container by means of interference fit is a preferred fixing method.

[0007] Furthermore, the outer diameter of the upper part of the outer wall of the heat-conducting tube is larger than the outer diameter of the lower part, and the upper outer wall of the heat-conducting tube is interference-fitted with the upper part of the inner wall of the container; or the outer diameter of the lower part of the outer wall of the heat-conducting tube is larger than the outer diameter of the upper part, and the lower outer wall of the heat-conducting tube is interference-fitted with the lower part of the inner wall of the container. Pressing the heat-conducting tube into the container from the upper end of the container and only interferingly fitting the upper or lower part of the heat-conducting tube with the inner wall of the container is a better fixing method.

[0008] Furthermore, the outer wall of the heat-conducting cylinder and the inner wall of the container are integrally formed, or fixed by welding, or fixed by bonding. Integral forming, welding, or bonding is also a preferred fixing method.

[0009] 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.

[0010] Furthermore, the boss is integrally formed with the side or bottom of the inner wall of the container, or welded, or bonded. Integral forming, welding, or bonding are all preferred fixing methods.

[0011] Furthermore, the boss is an annular body, or a convex block symmetrically distributed on the inner wall of the container. The annular body or the convex block symmetrically distributed on the inner wall of the container can stably support and position the heat-conducting cylinder.

[0012] Furthermore, the upper end of the heat-conducting tube (40) is flush with the upper end of the opening of the container. This flushness not only makes the heat-conducting tube more stably fixed to the inner wall of the container, but also facilitates the setting of the sealing device and achieves a better sealing effect.

[0013] Furthermore, the outer side of the heat absorbing member extends to form a convex edge, and when the cover and the container are closed, the upper surface of the convex edge of the heat absorbing member is lower than the top of the heat-conducting tube. The upper surface of the convex edge is lower than the top of the heat-conducting tube, so that the sealing ring exerts a stronger pressure on the open end of the container, and the sealing effect is better.

[0014] Furthermore, the upper inner side of the heat-conducting tube is provided with a heat-absorbing component fitting surface that is inclined from top to bottom and inward, the lower outer side of the heat-absorbing component is provided with a heat-conducting tube fitting surface that is inclined from top to bottom and inward, the heat-absorbing component fitting surface of the heat-conducting tube and the heat-absorbing component heat-conducting tube fitting surface have the same inclination angle, and a vacuum insulation layer is provided between the inner wall of the container and the outer shell of the container. The sealing heat-conducting tube and the heat-absorbing component fitting part are arranged to be in inclined contact, which increases the contact surface as much as possible, makes the contact more stable, and improves the conduction effect.

[0015] Compared with the prior art, the beneficial effect of the present invention is that the present invention fixes the heat-conducting tube to the inner wall of the container, eliminates the friction and looseness that may occur between the heat-conducting tube and the cup body, and protects the close contact between the heat-dissipating element and the heat-dissipating element, so as to achieve a good refrigeration and heat-insulating effect. The present invention further provides the above-mentioned specific and better fixing method. A boss is provided at the lower end of the inner wall of the container, a convex edge is provided on the outer side of the heat-absorbing element, and a sealing ring is provided on the outer side of the heat-absorbing element. The sealing heat-conducting tube and the heat-absorbing element are provided at the contact point of the inclined surface. As mentioned above, the refrigeration effect of the portable refrigeration device is further optimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 It is a cross-sectional view of the refrigeration device of the utility model.

[0018] Figure 2 for Figure 1 An enlarged schematic diagram of point A.

[0019] Figure 3 for Figure 1 An enlarged schematic diagram of point B.

[0020] Figure 4 for Figure 1 An enlarged schematic diagram of point C.

[0021] Figure 5 It is a three-dimensional diagram of the heat absorbing component of the refrigeration device of the utility model.

[0022] Figure 6 It is a three-dimensional diagram of the heat-conducting tube of the refrigeration device of the utility model.

[0023] Figure 7 It is a cross-sectional view of the heat absorbing component of the refrigeration device of the utility model.

[0024] Figure 8 It is a cross-sectional view of the upper end of the heat-conducting tube of the refrigeration device of the utility model.

[0025] 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; DETAILED DESCRIPTION

[0026] 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.

[0027] 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.

[0028] A portable refrigeration device, such as Figure 1 As shown, it includes a container 20 and a cover 10 installed on the container; 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; a heat-conducting tube 40 is arranged in the container 20, and the outer wall of the heat-conducting tube 40 is fixed to the inner wall 202 of the container; after 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 member 33.

[0029] The preferred fixing method of the outer wall of the heat-conducting tube 40 and the inner wall 202 of the container is: the outer wall of the heat-conducting tube 40 and the inner wall 202 of the container are fixed by interference fitting. Specifically, the upper outer diameter of the outer wall of the heat-conducting tube 40 is larger than the lower outer diameter. By setting the heat-conducting tube 40 to a shape with a larger upper part and a smaller lower part, the heat-conducting tube 40 and the container 20 can be better fixed by interference fitting. Or the lower outer diameter of the outer wall of the heat-conducting tube 40 is larger than the upper outer diameter, and the lower outer wall of the heat-conducting tube 40 is interference fit with the lower inner wall of the container. The upper end of the heat-conducting tube 40 is flush with the upper end of the opening of the container. The outer wall of the heat-conducting tube 40 and the inner wall 202 of the container can also be fixed in one piece, or welded, or bonded.

[0030] like Figure 1 , 4 As shown, the portable refrigeration device further includes a boss, and the boss 21 is arranged at the lower end of the inner wall of the container 20. The boss 21 is integrally formed with the side or bottom of the inner wall of the container 20, or welded, or bonded. The boss 21 is an annular body, or a convex block symmetrically distributed on the inner wall of the container. The boss 21 can limit the downward movement of the heat-conducting tube 40, and further fix the heat-conducting tube in the container.

[0031] like Figure 1 , 2 As shown, the heat absorbing member 33 further includes a flange 332 extending from the outside, and a sealing ring 70 is sleeved on the upper surface of the flange 332. The outer edge of the sealing ring 70 extends out of the flange 332. After the cover 10 covers the container 20, the extended edge of the sealing ring 70 can be sealed against the upper end surface of the heat-conducting tube 40. After the cover 10 and the container 20 are covered, the upper surface of the flange 332 of the heat absorbing member 33 is lower than the top end of the heat-conducting tube 40.

[0032] like Figure 1 , 2 As shown, the portable refrigeration device further includes a heat absorbing member fitting surface 401 and a heat conducting tube fitting surface 331, wherein the heat absorbing member fitting surface 401 is located on the inner side of the upper end surface of the heat conducting tube 40 and is in a surface shape inclined from top to bottom and inward, and the heat conducting tube fitting surface 331 is located on the outer side of the lower end surface of the heat absorbing member 33 and is in a surface shape inclined from top to bottom and inward, 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. Inclination can produce a larger contact area, and the same angle can make the heat conducting tube 40 and the heat absorbing member 33 fit more completely and stably.

[0033] like Figure 1 , 3As shown, the portable refrigeration device further includes a vacuum insulation layer 50, which is disposed between the inner wall 202 of the container and the outer shell 201 of the container. The vacuum insulation layer 50 can isolate the influence of the external high temperature on the inside of the container 20, so that the cold generated by the semiconductor refrigeration element can be maintained for a longer time, thereby improving the refrigeration effect and reducing the power consumption of the semiconductor refrigeration element.

[0034] 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 portable refrigeration device, characterized in that: The invention comprises a container (20) and a cover (10); a semiconductor refrigeration assembly (30) is arranged in the cover (10), the semiconductor refrigeration assembly (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) capable of conducting heat is arranged in the container (20), the outer wall of the heat-conducting tube (40) is fixed to the inner wall of the container; when 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).

2. A portable refrigeration device according to claim 1, characterized in that: The outer wall of the heat-conducting cylinder (40) and the inner wall of the container are fixed by means of interference fit.

3. A portable refrigeration device according to claim 2, characterized in that: The upper outer diameter of the outer wall of the heat-conducting tube (40) is greater than the lower outer diameter, and the upper outer wall of the heat-conducting tube (40) is interference-fitted with the upper inner wall of the container; or the lower outer diameter of the outer wall of the heat-conducting tube (40) is greater than the upper outer diameter, and the lower outer wall of the heat-conducting tube (40) is interference-fitted with the lower inner wall of the container.

4. A portable refrigeration device according to claim 1, characterized in that: The outer wall of the heat-conducting cylinder (40) is integrally formed with the inner wall of the container, or fixed by welding, or fixed by bonding.

5. A portable refrigeration device according to any one of claims 1 to 4, characterized in that: A boss (21) capable of limiting the downward movement of the heat-conducting tube (40) is provided at the lower end of the inner wall of the container (20).

6. A portable refrigeration device according to claim 5, characterized in that: The boss (21) is integrally formed with the side or bottom of the inner wall of the container (20), or is welded or bonded.

7. A portable refrigeration device according to claim 5, characterized in that: The boss (21) is an annular body, or a convex block symmetrically distributed on the inner wall of the container.

8. A portable refrigeration device according to any one of claims 1 to 4, characterized in that: The upper end of the heat-conducting tube (40) is flush with the upper end of the opening of the container.

9. A portable refrigeration device according to any one of claims 1 to 4, characterized in that: The outer side of the heat absorbing member (33) extends to form a convex edge (332); when the cover (10) and the container (20) are closed, the upper surface of the convex edge (332) of the heat absorbing member (33) is lower than the top end of the heat-conducting tube.

10. A portable refrigeration device according to any one of claims 1 to 4, characterized in that: The upper inner side of the heat-conducting tube (40) is provided with a heat-absorbing component fitting surface (401) which is inclined inwardly from top to bottom, and the lower outer side of the heat-absorbing component (33) is provided with a heat-conducting tube fitting surface (331) which is inclined inwardly from top to bottom, the heat-absorbing component fitting surface (401) of the heat-conducting tube (40) and the heat-conducting tube fitting surface (331) of the heat-absorbing component (33) have the same inclination angle, and a vacuum heat-insulating layer (50) is provided between the inner wall of the container and the outer shell of the container.

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