Centrifuge structure and centrifuge chamber cooling structure thereof

Abstract

A centrifuge structure and a centrifuge chamber cooling structure thereof, relating to the technical field of centrifuges. The centrifuge chamber cooling structure comprises: a cylinder body; a thermal insulation sleeve sleeved on the periphery of the cylinder body to provide thermal insulation for the cylinder body; a working medium inlet passing through the tops of the thermal insulation sleeve and the cylinder body; a working medium outlet passing through the bottoms of the thermal insulation sleeve and the cylinder body; and a flow channel arranged in the cylinder body, wherein the top of the flow channel is communicated with the working medium inlet, and the bottom of the flow channel is communicated with the working medium outlet. The device can effectively improve the refrigeration efficiency of a refrigeration compressor.

Description

A centrifuge structure and centrifugal chamber cooling structure thereof

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 12, 2023, with application number 202311704494.7 and invention name “A centrifuge structure and its centrifugal chamber cooling structure”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the field of centrifuge technology, and more specifically, to a centrifuge chamber cooling structure. Furthermore, the present invention also provides a centrifuge structure comprising the centrifuge chamber cooling structure. Background Art

[0003] In related technologies, refrigerated centrifuges generally use refrigeration compressors for cooling, that is, the copper tubes of the heat exchanger are directly wrapped around the outer wall and bottom of the centrifuge. In addition, in order to increase the contact area between the copper tubes and the outer wall of the centrifuge, the cross-section of the copper tubes is waist-shaped. Glue is applied between the copper tubes and the cylinder wall to conduct heat and fix them. The outer periphery of the copper tubes is filled with insulating foam glue to keep them warm.

[0004] However, although the copper tube of the heat exchanger adopts a flat waist-shaped cross-section, it cannot fit precisely with the outer wall of the centrifuge chamber, resulting in a limited effective contact area between the copper tube and the outer wall of the centrifuge, that is, the effective heat exchange area is very small, which greatly reduces the cooling efficiency of the refrigeration compressor.

[0005] In summary, how to improve the refrigeration efficiency of a refrigeration compressor is a problem that urgently needs to be solved by those skilled in the art.

[0006] Summary of the Invention

[0007] In view of this, an object of the present invention is to provide a centrifuge chamber cooling structure that can effectively improve the refrigeration efficiency of a refrigeration compressor. Another object of the present invention is to provide a centrifuge structure including the centrifuge chamber cooling structure.

[0008] In order to achieve the above object, the present invention provides the following technical solutions:

[0009] A centrifugal chamber cooling structure of a centrifuge, comprising:

[0010] Cylinder;

[0011] A heat-insulating sleeve is sleeved on the outer periphery of the cylinder to insulate the cylinder;

[0012] A working medium inlet is provided through the thermal insulation sleeve and the top of the cylinder;

[0013] A working medium outlet is provided through the thermal insulation sleeve and the bottom of the cylinder;

[0014] The flow channel is arranged in the cylinder, the top of the flow channel is communicated with the working medium inlet, and the bottom of the flow channel is communicated with the working medium outlet.

[0015] In one embodiment, the cylinder includes an inner sleeve and an outer sleeve sleeved on the outer periphery of the inner sleeve, and the outer periphery of the outer sleeve is sleeved with the thermal insulation sleeve; the flow channel includes a groove continuously arranged along the outer periphery and bottom of the inner sleeve.

[0016] In one embodiment, the groove comprises a helical groove.

[0017] In one embodiment, the outer periphery and the bottom of the cylinder are provided with continuous mounting grooves, the flow channel includes a heat exchange pipe provided in the mounting groove, and the gap between the heat exchange pipe and the cylinder is filled with thermal conductive potting glue.

[0018] In one embodiment, the flow channel includes a heat exchange pipe wound around the outer periphery and the bottom of the cylinder, and the gap between the heat exchange pipe and the cylinder is filled with heat-conductive potting glue.

[0019] In one embodiment, the heat exchange pipe comprises a copper pipe.

[0020] In one embodiment, the thermal insulation sleeve comprises a piece of foam material.

[0021] A centrifuge structure comprises the centrifugal chamber cooling structure of any one of the above-mentioned centrifuges.

[0022] When using the centrifugal chamber cooling structure of the centrifuge provided by the present invention, the inner wall of the inner sleeve serves as the centrifugal chamber of the centrifuge. First, the cooling medium can enter through the medium inlet located at the top of the thermal insulation sleeve and the inner sleeve, then the cooling medium flows through the flow channel, and finally, the cooling medium enters the medium outlet located at the bottom of the thermal insulation sleeve and the inner sleeve and flows out.

[0023] Therefore, the refrigerant first exchanges heat with the inner sleeve, and then the inner sleeve exchanges heat with the centrifugal chamber. The flow channel and inner sleeve can form a component similar to a heat exchanger, fully realizing the heat exchange operation of the refrigerant, which is beneficial to improving the cooling efficiency of the refrigeration compressor. In addition, the outer side of the flow channel and inner sleeve is equipped with a thermal insulation sleeve to effectively prevent heat loss, helping to ensure the cooling effect of the refrigeration compressor.

[0024] In summary, the centrifugal chamber cooling structure of the centrifuge provided by the present invention can effectively improve the refrigeration efficiency of the refrigeration compressor.

[0025] In addition, the present invention also provides a centrifuge structure including the above-mentioned centrifuge chamber cooling structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0027] FIG1 is a cross-sectional view of an inner sleeve of a first embodiment of a centrifugal chamber cooling structure of a centrifuge provided by the present invention;

[0028] Figure 2 is a front view of the inner sleeve in the first solution;

[0029] FIG3 is a schematic structural diagram of a first embodiment of a centrifugal chamber cooling structure of a centrifuge;

[0030] FIG4 is a schematic structural diagram of a second solution of a centrifugal chamber cooling structure of a centrifuge;

[0031] FIG5 is a schematic structural diagram of a third solution of the centrifugal chamber cooling structure of a centrifuge.

[0032] In Figures 1 to 5: 1 is the thermal insulation sleeve, 2 is the outer shell, 3 is the cylinder, 4 is the heat exchange pipe, 5 is the thermal conductive potting glue, 6 is the working medium inlet, 7 is the working medium outlet, 8 is the spiral groove, and 9 is the inner cylinder. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0034] The core of the present invention is to provide a centrifuge chamber cooling structure, which can effectively improve the refrigeration efficiency of the refrigeration compressor. Another core of the present invention is to provide a centrifuge structure including the centrifuge chamber cooling structure.

[0035] Please refer to Figures 1 to 5. Figure 1 is a cross-sectional view of the inner sleeve in the first solution of the centrifugal chamber cooling structure provided by the present invention; Figure 2 is a front view of the inner sleeve in the first solution; Figure 3 is a structural schematic diagram of the first solution of the centrifugal chamber cooling structure of the centrifuge; Figure 4 is a structural schematic diagram of the second solution of the centrifugal chamber cooling structure of the centrifuge; Figure 5 is a structural schematic diagram of the third solution of the centrifugal chamber cooling structure of the centrifuge.

[0036] This specific embodiment provides a centrifugal chamber cooling structure of a centrifuge, comprising:

[0037] Cylinder 3;

[0038] The heat-insulating sleeve 1 is arranged on the outer periphery of the cylinder 3 to insulate the cylinder 3;

[0039] A working medium inlet 6 is provided through the thermal insulation sleeve 1 and the top of the cylinder 3;

[0040] A working medium outlet 7 is provided through the bottom of the heat insulating sleeve 1 and the cylinder 3;

[0041] The flow channel is arranged in the cylinder 3 , the top of the flow channel is connected to the working medium inlet 6 , and the bottom of the flow channel is connected to the working medium outlet 7 .

[0042] It should be noted that a flow channel can be wound between the inner periphery of the insulation sleeve 1 and the outer periphery of the cylinder 3 to increase the flow channel size, that is, to increase the heat exchange area between the cooling medium and the cylinder 3, which helps to improve the heat exchange effect of the cooling medium.

[0043] During actual use, the shape, structure, size, material, position, etc. of the cylinder 3, the thermal insulation sleeve 1, the working fluid inlet 6, the working fluid outlet 7 and the flow channel can be determined according to actual conditions and actual needs.

[0044] When using the centrifugal chamber cooling structure of the centrifuge provided by the present invention, the inner wall of the cylinder 3 serves as the centrifugal chamber of the centrifuge. First, the cooling medium can enter through the medium inlet 6 located at the top of the thermal insulation sleeve 1 and the cylinder 3. Then, the cooling medium flows through the flow channel. Finally, the cooling medium enters the medium outlet 7 located at the bottom of the thermal insulation sleeve 1 and the cylinder 3 and flows out.

[0045] Therefore, the refrigerant first exchanges heat with the barrel 3, and then exchanges heat with the centrifugal chamber. The flow channel and barrel 3 can form a component similar to a heat exchanger, fully realizing the heat exchange operation of the refrigerant, which is beneficial to improving the cooling efficiency of the refrigeration compressor. In addition, the outer side of the flow channel and barrel 3 is provided with a thermal insulation sleeve 1 to effectively prevent heat loss, helping to ensure the cooling effect of the refrigeration compressor.

[0046] In summary, the centrifugal chamber cooling structure of the centrifuge provided by the present invention can effectively improve the refrigeration efficiency of the refrigeration compressor.

[0047] In one embodiment, the cylinder 3 includes an inner sleeve 9 and an outer sleeve 2 that is sheathed around the outer periphery of the inner sleeve 9. The outer sleeve 2 is sheathed around the outer periphery of the thermal insulation sleeve 1. The flow channel includes a continuous groove extending along the outer periphery and bottom of the inner sleeve 9. This is referred to as the first embodiment, and its structure is shown in Figures 1-3. The arrow indicates the flow direction of the cooling medium, and the black filler is the thermally conductive potting compound 5.

[0048] It should be noted that the outer sleeve 2 and the inner sleeve 9 form the cylindrical wall of the centrifugal chamber. By processing continuous grooves on the outer periphery and bottom of the inner sleeve 9, the cooling medium flows through the medium inlet 6, the grooves and the medium outlet 7 in sequence, and is finally discharged to the outside.

[0049] In one embodiment, the groove includes a spiral groove 8 to fully increase the heat exchange area between the cooling medium and the cylinder 3, and also facilitate processing and manufacturing.

[0050] It should be noted that in the first design scheme, the spiral groove 8 replaces the original heat exchange tube to transport the cooling medium. The outer sleeve 2 of this device can isolate the cooling medium from the thermal insulation sleeve 1. The cooling medium flowing in the spiral groove 8 can directly cool the centrifugal chamber. The entire flow channel serves as a replacement for the original spiral copper tube, that is, the flow channel realizes a function similar to that of an air conditioner heat exchanger. In addition, the spiral groove 8 is formed on the outer surface and bottom of the inner sleeve 9. The cross-section of the spiral groove 8 can be rectangular, and the cross-sectional shape of the spiral groove 8 is not limited to a rectangle.

[0051] In one embodiment, continuous mounting grooves are provided on the outer periphery and bottom of the cylinder 3. The flow channel includes a heat exchange pipe 4 disposed within the mounting groove. The gap between the heat exchange pipe 4 and the cylinder 3 is filled with a thermally conductive potting compound 5. This is referred to as the second solution, and its structure is shown in FIG4 . The arrow indicates the flow direction of the cooling medium, and the black filler represents the thermally conductive potting compound 5.

[0052] It should be noted that, first, the heat exchange pipe 4 can be directly wound around the outer periphery and bottom mounting grooves of the cylinder 3, and then the gap between the heat exchange pipe 4 and the cylinder 3 can be filled with thermally conductive potting compound 5. The thermally conductive potting compound 5 is filled between the heat exchange pipe 4 and the cylinder 3 to conduct heat and fix the heat exchange pipe 4. The heat insulation sleeve 1 is provided on the outside of the heat exchange pipe 4 to keep the heat in place.

[0053] Furthermore, it should be noted that the thermally conductive potting compound 5 exhibits excellent thermal conductivity and flame retardancy, as well as good impact resistance, strong adhesion, and excellent electrical insulation properties, including insulation, moisture resistance, shock resistance, corona resistance, leakage resistance, and chemical resistance. In other words, the thermally conductive potting compound 5 is resistant to environmental contamination and can prevent damage to products caused by environmental factors such as stress, vibration, and humidity. It is particularly suitable for products requiring potting materials with excellent heat dissipation properties and exhibits excellent physical and chemical resistance.

[0054] During use of the device, the cooling medium can enter through the medium inlet 6 at the top of the cylinder 3 and flow out from the medium outlet 7 at the bottom through the heat exchange pipe 4. In this way, the cooling medium first exchanges heat with the heat exchange pipe 4, then exchanges heat with the heat-conducting potting compound 5, and finally exchanges heat with the heat-conducting potting compound 5, the cylinder 3 and the centrifugal chamber.

[0055] It should also be noted that the mounting groove can be configured as a structure similar to the spiral groove 8 in the first embodiment, so that the heat exchange area of ​​the second embodiment is the same as that of the first embodiment. However, due to the additional heat exchange process in the second embodiment, the thermal resistance is increased, and the cooling effect will be worse than that of the first embodiment. In addition, the heat exchange pipe 4 is not limited by material, cross-sectional shape, or size.

[0056] In one embodiment, the flow channel includes a heat exchange pipe 4 wound around the outer periphery and bottom of the cylinder 3, and the gap between the heat exchange pipe 4 and the cylinder 3 is filled with a thermally conductive potting compound 5, which is recorded as the third solution. Its structure is shown in Figure 5, where the direction of the arrow is the flow direction of the cooling medium, and the black filling is the thermally conductive potting compound 5.

[0057] It should be noted that, first, the heat exchange pipe 4 can be directly wound around the outer periphery and bottom of the barrel 3. Then, the heat exchange pipe 4 can be completely covered with thermally conductive potting compound 5 to separate the barrel 3 from the thermal insulation sleeve 1. The thermally conductive potting compound 5 is filled between the heat exchange pipe 4 and the barrel 3 to conduct heat and secure the barrel 3. The thermal insulation sleeve 1 is provided on the outside of the heat exchange pipe 4 to provide insulation.

[0058] During use of this device, the cooling medium enters through the medium inlet 6 at the top of the barrel 3 and flows out through the heat exchange pipe 4 and the medium outlet 7 at the bottom. This first exchanges heat with the heat exchange pipe 4, then with the heat-conducting potting compound 5, and finally with the heat-conducting potting compound 5, the barrel 3, and the centrifugal chamber. This differs from the second solution in that the outer periphery and bottom of the barrel 3 lack spiral grooves 8, and the outer wall of the barrel 3 is smooth. This reduces the heat exchange area compared to solutions one and two, resulting in the worst cooling effect. However, the third solution offers a simpler manufacturing process and lower processing costs.

[0059] In one embodiment, the heat exchange pipe 4 comprises a copper pipe. Of course, the heat exchange pipe 4 can also be made of other materials with heat exchange performance.

[0060] In one embodiment, the thermal insulation sleeve 1 includes a foam material to effectively ensure the thermal insulation effect of the thermal insulation sleeve 1. Of course, the thermal insulation sleeve 1 can also be set to other materials with thermal insulation effect.

[0061] The first solution of the present application divides the centrifugal barrel into an inner sleeve 9 and an outer sleeve 2, forming a flow channel between the two, and directly uses the centrifugal barrel as a heat exchanger to achieve the maximum heat exchange area and the minimum thermal resistance, thereby achieving the best cooling effect; the second solution of the present application provides a spiral groove 8 on the outer wall and bottom of the centrifugal barrel body 3, and directly winds the copper tube in the spiral groove 8. Compared with the existing solutions in the industry, the effective heat exchange area is increased and the thermal resistance is appropriately reduced, but the cooling effect of the second solution is slightly worse than that of the first solution; the third solution of the present application directly winds the copper tube around the outer wall and bottom of the centrifugal barrel body 3, which is somewhat similar to the existing solutions in the industry. The difference is that the copper tube is completely covered with a thermally conductive potting glue. Compared with the existing solutions in the industry, its cooling effect is better, but worse than the first and second solutions.

[0062] The three solutions proposed in this application all significantly shorten the cooling time of the centrifugal chamber by increasing the effective heat exchange area of ​​the heat exchanger, while using the same compressor. This reduces waiting time and improves labor efficiency. Furthermore, during stable operation, the electrical energy required to maintain a given centrifugal chamber temperature is reduced, aligning with the technological development trend of centrifuge energy conservation.

[0063] In addition to the above-mentioned centrifuge centrifugal chamber cooling structure, the present invention also provides a centrifuge structure including the centrifuge centrifugal chamber cooling structure disclosed in the above-mentioned embodiment. For the structures of other parts of the centrifuge structure, please refer to the prior art and will not be described in detail herein.

[0064] In addition, it should be noted that the orientations or positional relationships indicated by "inside and outside", "in and out", etc. in the present invention are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of simplifying the description and facilitating understanding, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0065] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other. Any combination of all the embodiments provided by the present invention is within the scope of protection of this invention and will not be described in detail here.

[0066] The centrifuge structure and the centrifugal chamber cooling structure thereof provided by the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A cooling structure for the centrifugal chamber of a centrifuge, characterized in that, Comprising: A cylinder body (3); A heat insulation sleeve (1) sleeved on the outer periphery of the cylinder body (3) to perform heat insulation and heat preservation on the cylinder body (3); A working medium inlet (6) penetrating through the top of the heat insulation sleeve (1) and the cylinder body (3); A working medium outlet (7) penetrating through the bottom of the heat insulation sleeve (1) and the cylinder body (3); A flow channel provided inside the cylinder body (3), the top of the flow channel communicating with the working medium inlet (6), and the bottom of the flow channel communicating with the working medium outlet (7).

2. The cooling structure for the centrifugal chamber of a centrifuge according to claim 1, characterized in that, The cylinder body (3) includes an inner sleeve (9) and an outer sleeve (2) sleeved on the outer periphery of the inner sleeve (9), and the heat insulation sleeve (1) is sleeved on the outer periphery of the outer sleeve (2); the flow channel includes a groove continuously arranged along the outer periphery and bottom of the inner sleeve (9).

3. The cooling structure for the centrifugal chamber of a centrifuge according to claim 2, characterized in that, The groove includes a spiral groove (8).

4. The cooling structure for the centrifugal chamber of a centrifuge according to claim 2, characterized in that, An installation groove is continuously provided on the outer periphery and bottom of the cylinder body (3), the flow channel includes a heat exchange pipe (4) provided in the installation groove, and a heat conduction potting adhesive (5) is filled in the gap between the heat exchange pipe (4) and the cylinder body (3).

5. The cooling structure for the centrifugal chamber of a centrifuge according to claim 2, characterized in that, The flow channel includes a heat exchange pipe (4) wound around the outer periphery and bottom of the cylinder body (3), and a heat conduction potting adhesive (5) is filled in the gap between the heat exchange pipe (4) and the cylinder body (3).

6. The cooling structure for the centrifugal chamber of a centrifuge according to claim 4 or 5, characterized in that, The heat exchange pipe (4) includes a copper pipe.

7. The cooling structure for the centrifugal chamber of a centrifuge according to any one of claims 1 to 5, characterized in that, The heat insulation sleeve (1) includes a foamed material part.

8. A centrifuge structure, characterized in that, Comprising the centrifuge centrifugal chamber cooling structure according to any one of claims 1 to 7 above.

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