Barrel body of centrifugal machine and centrifugal machine
By designing a centrifuge barrel body with a sealed runner, the problems of small and uneven heat exchange area caused by the existing centrifuge copper tube evaporator are solved, and more efficient refrigeration effect and simpler structure are achieved, reducing production costs.
Patent Information
- Application Number
- CN202421639317.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-11
AI Technical Summary
The existing centrifuge is refrigerated by a copper tube evaporator wrapped around the outside of the barrel, resulting in a small heat exchange area and uneven heat exchange, which affects the heat exchange efficiency.
A barrel body of a centrifuge is designed, and the inner liner and the outer liner are welded and fixed to form a sealed heat exchange chamber, and a tightly arranged groove is formed on the inner peripheral surface of the outer liner, so that the inner liner and the outer liner are closely fitted, forming a sealed flow channel. The liquid inlet and liquid outlet are respectively arranged at both ends of the flow channel and connected to the refrigeration circulation system, so that the refrigerant flows layered on the surface of the inner liner through the flow channel to achieve uniform heat exchange.
Through this design, the contact area between the refrigerant and the inner liner is increased, the heat exchange efficiency is improved, the barrel structure is simplified, the production cost is reduced, and the reliability and stability of the refrigeration system is ensured.
Smart Images
Figure CN222943680U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of centrifuges, and specifically provides a centrifuge barrel and a centrifuge. Background Art
[0002] As the core component of the refrigerated centrifuge, the evaporator's main function is to ensure that the sample is centrifugally stratified under a stable and controllable ambient temperature. Refrigerated centrifuges generally use refrigeration compressors for refrigeration, that is, the copper tubes of the heat exchanger are directly wrapped around the outer wall of the centrifuge to form an evaporator, and the evaporator cools the centrifugal chamber through the inner tank.
[0003] However, the existing centrifuge uses a copper tube evaporator wrapped around the outside of the barrel for refrigeration. Since the contact surface between the copper tube and the inner tank is linear contact and there is a triangular area gap between adjacent copper tubes, the heat exchange area is small and the heat exchange is uneven, which affects the heat exchange efficiency.
[0004] Therefore, this field needs a new technical solution to solve the above problems. Utility Model Content
[0005] The utility model aims to solve the above technical problem, that is, to solve the problem that the existing centrifuge uses a copper tube evaporator wound around the outside of the barrel to perform refrigeration, resulting in a small heat exchange area, uneven heat exchange, and affected heat exchange efficiency.
[0006] In a first aspect, the utility model provides a barrel of a centrifuge, the centrifuge comprising a compressor, a condenser, and an expansion valve, the barrel comprising: an inner liner, the interior of the inner liner forming a centrifugal cavity; an outer liner, the outer liner being welded and fixed to the inner liner, and forming a heat exchange cavity with the inner liner; a liquid inlet and a liquid outlet are provided on the heat exchange cavity, the liquid inlet is communicated with the liquid outlet of the expansion valve, and the liquid outlet is communicated with the liquid return port of the compressor, so as to form a refrigeration cycle and cool the centrifugal cavity through the heat exchange cavity.
[0007] In the preferred technical solution of the above-mentioned barrel body, the inner circumferential surface of the outer liner is constructed with closely arranged grooves, the inner liner is tightly fitted with the outer liner so that the outer circumferential surface of the inner liner and the grooves form a sealed flow channel, and the liquid inlet and the liquid outlet are respectively arranged at both ends of the flow channel.
[0008] In the preferred technical solution of the above barrel body, the outer liner is configured as a blowing plate.
[0009] In the preferred technical solution of the above barrel body, the outer liner is configured as a stamping plate.
[0010] In the preferred technical solution of the above barrel body, the flow channel extends spirally around the barrel body, the liquid inlet is arranged at the top of the barrel body, and the liquid outlet is arranged at the bottom of the barrel body.
[0011] In the preferred technical solution of the above barrel body, the flow channel extends around the barrel body in a U-shaped turn, the liquid inlet is arranged at the top of the barrel body, and the liquid outlet is arranged at the bottom of the barrel body.
[0012] In the preferred technical solution of the above-mentioned barrel body, the flow channel includes a first flow channel and a second flow channel arranged in parallel, the liquid inlet of the first flow channel and the liquid inlet of the second flow channel are both connected to the liquid outlet of the expansion valve, and the liquid outlet of the first flow channel and the liquid outlet of the second flow channel are both connected to the return liquid port of the compressor.
[0013] In the preferred technical solution of the above barrel body, the barrel body further comprises a heat insulation layer, and the heat insulation layer is coated on the outside of the outer liner.
[0014] In a preferred technical solution of the above barrel body, the barrel body further comprises a cold storage layer, and the cold storage layer is arranged between the outer liner and the heat insulation layer.
[0015] In a second aspect, the utility model provides a centrifuge, wherein the centrifuge comprises the barrel body mentioned above.
[0016] In the case of adopting the above technical solution, the utility model provides a barrel of a centrifuge, the centrifuge includes a compressor, a condenser, and an expansion valve, and the barrel of the utility model includes: an inner liner, the interior of the inner liner forms a centrifugal cavity; an outer liner, the outer liner is welded and fixed to the inner liner, and a heat exchange cavity is formed between the outer liner and the inner liner; a liquid inlet and a liquid outlet are provided on the heat exchange cavity, the liquid inlet is connected to the liquid outlet of the expansion valve, and the liquid outlet is connected to the liquid return port of the compressor, so as to form a refrigeration cycle and refrigerate the centrifugal cavity through the heat exchange cavity. Through such a setting, on the one hand, the evaporator and the barrel are combined into one, the structure of the barrel and the centrifuge is simplified, the production cost is reduced, and the production efficiency is improved; on the other hand, compared with the copper tube evaporator, the refrigerant can directly contact with the inner liner, and the contact area between the refrigerant and the inner liner is increased, thereby improving the refrigeration efficiency.
[0017] Furthermore, the inner circumference of the outer liner of the utility model is constructed with closely arranged grooves, and the inner liner and the outer liner are closely fitted so that the outer circumference of the inner liner and the grooves form a sealed flow channel, and the liquid inlet and the liquid outlet are respectively arranged at both ends of the flow channel. Through such an arrangement, the refrigerant can flow in layers on the surface of the inner liner through the flow channel, making the heat exchange between the refrigerant and the inner liner more uniform and improving the heat exchange efficiency.
[0018] Furthermore, the outer liner of the utility model is set as a blowing plate. Through such a setting, on the one hand, the gap between the heat exchange pipeline and the inner liner is eliminated, the heat exchange area is increased, and the heat exchange efficiency is effectively improved; on the other hand, the structure and processing technology of the barrel are simplified, the use of materials such as copper tubes is reduced, and the production cost is greatly saved.
[0019] Furthermore, the outer liner of the utility model is arranged as a stamping plate. Through such arrangement, the production process of the barrel body is mature and the structure is firm.
[0020] Furthermore, the flow channel of the utility model extends spirally around the barrel body, the liquid inlet is arranged at the top of the barrel body, and the liquid outlet is arranged at the bottom of the barrel body.
[0021] Furthermore, the flow channel of the utility model extends in a U-shaped rotation around the barrel body, the liquid inlet is arranged at the top of the barrel body, and the liquid outlet is arranged at the bottom of the barrel body. Through such an arrangement, on the one hand, while ensuring uniform heat conduction, a variety of flow channel structures are provided; on the other hand, the arrangement of the liquid inlet at the top and the liquid outlet at the bottom ensures the circulation flow rate of the refrigerant in the flow channel.
[0022] Furthermore, the flow channel of the utility model includes a first flow channel and a second flow channel arranged in parallel, the liquid inlet of the first flow channel and the liquid inlet of the second flow channel are both connected to the liquid outlet of the expansion valve, and the liquid outlet of the first flow channel and the liquid outlet of the second flow channel are both connected to the liquid return port of the compressor. Through such an arrangement, the parallel dual flow channel structure can ensure the normal operation of the refrigeration system after one flow channel is blocked or fails, thereby improving the reliability and stability of the refrigeration system.
[0023] Furthermore, the barrel of the utility model also includes a heat insulation layer, which is coated on the outside of the outer liner. Through such a configuration, the speed of heat exchange between the barrel and the outside can be slowed down, the loss of cold energy can be prevented to the greatest extent, and the cold energy can be retained in the barrel.
[0024] Furthermore, the barrel of the utility model further includes a cold storage layer, which is arranged between the outer liner and the heat insulation layer. Through such an arrangement, cold can be stored through the cold storage layer to assist the refrigeration system in refrigeration, thereby being able to reasonably adjust the operating frequency of the compressor and help control energy consumption.
[0025] In addition, the centrifuge further provided by the utility model on the basis of the above barrel body has the technical effects possessed by the above barrel body due to the adoption of the above barrel body. Compared with the centrifuge before the improvement, the centrifuge of the utility model has higher refrigeration efficiency, simpler structure, optimized production process and reduced production cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:
[0027] Figure 1 It is a structural schematic diagram of a first embodiment of the barrel of the centrifuge of the utility model;
[0028] Figure 2It is a structural schematic diagram of a second embodiment of the barrel of the centrifuge of the utility model;
[0029] Figure 3 It is a cross-sectional view of the inner liner and the outer liner of the utility model after being assembled;
[0030] Figure 4 It is a cross-sectional view of a copper tube evaporator in the prior art.
[0031] List of reference numerals:
[0032] 1. Inner liner; 2. Outer liner; 3. Flow channel; 31. Liquid inlet; 32. Liquid outlet; 4. Copper tube. DETAILED DESCRIPTION
[0033] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.
[0034] It should be noted that, in the description of the present invention, terms such as "inside", "outside", "upper", "lower", "top", and "bottom" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.
[0035] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "connect", and "install" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0036] Based on the existing centrifuge pointed out in the background technology, the copper tube evaporator wrapped around the outside of the barrel is used for cooling, resulting in a small heat exchange area, uneven heat exchange, and affecting the heat exchange efficiency. The utility model provides a barrel of a centrifuge and a centrifuge, by arranging a groove on the outer liner of the barrel, so that a sealed flow channel is formed between the inner liner and the outer liner, and the refrigeration cycle system is connected through the liquid inlet and the liquid outlet at both ends of the flow channel, and the barrel is cooled by the flow of refrigerant in the flow channel, and then the centrifugal cavity in the barrel is cooled. While improving the refrigeration efficiency, the setting of the independent evaporator is cancelled, the barrel structure is simplified, and the production cost is reduced.
[0037] Specifically, Figures 1 to 3As shown, the utility model provides a barrel body of a centrifuge, the centrifuge includes a compressor (not shown in the figure), a condenser (not shown in the figure), and an expansion valve (not shown in the figure). The barrel body of the utility model includes: an inner tank 1, the interior of the inner tank 1 forms a centrifugal cavity; an outer tank 2, the outer tank 2 is welded and fixed to the inner tank 1, and a heat exchange cavity is formed between the outer tank 2 and the inner tank 1; a liquid inlet 31 and a liquid outlet 32 are provided on the heat exchange cavity, the liquid inlet 31 is communicated with the liquid outlet 32 of the expansion valve, and the liquid outlet 32 is communicated with the return liquid port of the compressor, so as to form a refrigeration cycle and cool the centrifugal cavity through the heat exchange cavity.
[0038] Illustratively, the barrel body of the utility model plays the role of an evaporator in a refrigeration cycle system. Specifically, in the refrigeration cycle, after being discharged from the compressor, the refrigerant flows through the condenser and the expansion valve in succession. The throttling and pressure-reducing effect of the expansion valve reduces the temperature of the refrigerant, and then the low-temperature refrigerant flows into the barrel body to cool the barrel body, thereby achieving the purpose of refrigerating the centrifugal cavity inside the barrel body.
[0039] The inner liner 1 and the outer liner 2 are both made of metal plates. During the processing, an outward bulge structure is first processed on the outer liner 2 to form a groove on the inner side of the outer liner 2, and then the inner liner 1 and the outer liner 2 are welded to form a heat exchange cavity between the two. The heat exchange cavity is connected to the refrigeration cycle system through the liquid inlet 31 and the liquid outlet 32, so that the barrel body also serves as an evaporator.
[0040] When the refrigerant flows through the heat exchange cavity, it directly contacts the inner liner 1, so that the cold energy can be directly transferred to the centrifugal cavity through the inner liner 1. Figure 4 As shown, compared with the traditional copper tube 4 evaporator surrounding the outside of the barrel, there is no need to transfer cold energy through the tube wall of the copper tube 4, making the heat exchange more direct and efficient. In addition, the contact surface between the traditional copper tube 4 and the inner tank 1 is approximately a straight line, resulting in a small contact surface between the two. The heat exchange cavity in this solution allows the refrigerant to form a surface contact with the inner tank 1, increasing the contact area and effectively improving the heat exchange efficiency.
[0041] Therefore, the evaporator and the barrel are combined into one, which not only improves the refrigeration efficiency, but also simplifies the structure of the barrel and the centrifuge, reduces the production cost and improves the production efficiency.
[0042] Preferably, if Figures 1 to 3 As shown, the inner circumference of the outer liner 2 of the utility model is constructed with closely arranged grooves, and the inner liner 1 and the outer liner 2 fit tightly together so that the outer circumference of the inner liner 1 and the grooves form a sealed flow channel 3, and the liquid inlet 31 and the liquid outlet 32 are respectively arranged at both ends of the flow channel 3.
[0043] Exemplarily, closely arranged grooves are first constructed on the inner side of the outer liner 2 so that the grooves are evenly distributed on the inner circumference of the outer liner 2, and then the inner circumference of the outer liner 2 is fitted and fixed to the outer circumference of the inner liner 1, so that the grooves are covered by the inner liner 1 to form a sealed flow channel 3.
[0044] This allows the refrigerant to flow in layers on the surface of the inner tank 1 through the flow channel 3 and be evenly distributed on the outer peripheral surface of the inner tank 1, thereby making the contact between the refrigerant and the inner tank 1 more uniform, achieving uniform heat exchange and improving heat exchange efficiency.
[0045] Preferably, if Figures 1 to 3 As shown, the outer liner 2 of the utility model is configured as a blowing plate.
[0046] Thereby, the barrel body forms an inflation evaporator. Specifically, two stainless steel plates of the same size are first laid flat and stacked, and then penetration welding is performed according to the pre-designed direction of the flow channel 3, so that the welding line forms the outline of the flow channel 3, and finally high-pressure gas is injected into the flow channel 3 to make the outer tank 2 bulge along the direction of the welding line, thereby forming an internal flow channel 3. The outer tank 2 made in this way can make the flow channel 3 closely distributed due to the narrow welding line, and there will be no heat exchange blind area between the copper tubes 4, which is more conducive to the uniform conduction of cold energy and improves the heat exchange efficiency.
[0047] In summary, the inflation evaporator can, on the one hand, eliminate the gap between the traditional heat exchange pipeline and the inner tank 1, increase the heat exchange area, and effectively improve the heat exchange efficiency; on the other hand, compared with the solution of grooving the flow channel 3 on the inner tank 1 or the outer tank 2, it simplifies the structure and processing technology of the barrel and reduces the production cost.
[0048] Preferably, if Figures 1 to 3 As shown, the outer liner 2 of the present invention is configured as a stamping plate.
[0049] That is, grooves are constructed on the metal plate using a stamping process. This solution has a simple process and mature technology, and can ensure the structural strength of the barrel.
[0050] like Figure 1 As shown, in a preferred embodiment of the present invention, the flow channel 3 of the present invention extends spirally around the barrel body, the liquid inlet 31 is arranged at the top of the barrel body, and the liquid outlet 32 is arranged at the bottom of the barrel body.
[0051] like Figure 2 As shown, in another preferred embodiment of the present utility model, the flow channel 3 extends around the barrel body in a U-shaped turn, the liquid inlet 31 is arranged at the top of the barrel body, and the liquid outlet 32 is arranged at the bottom of the barrel body.
[0052] Both of the above structures can ensure uniform heat conduction, so that in actual application, the appropriate flow channel 3 structure can be flexibly selected according to design requirements to improve the flexibility and diversity of processing; the refrigerant enters the flow channel 3 from the liquid inlet 31 at the top and finally flows out from the liquid outlet 32 at the bottom. The flow velocity and flow rate of the refrigerant in the flow channel 3 can be increased by gravity, thereby improving the heat exchange efficiency.
[0053] Preferably, the flow channel 3 of the utility model includes a first flow channel and a second flow channel arranged in parallel, the liquid inlet 31 of the first flow channel and the liquid inlet 31 of the second flow channel are both connected to the liquid outlet 32 of the expansion valve, and the liquid outlet 32 of the first flow channel and the liquid outlet 32 of the second flow channel are both connected to the return liquid port of the compressor.
[0054] Exemplarily, the two flow channels 3 are arranged in parallel and have the same direction. The structural form of the parallel dual flow channels 3 can ensure the normal operation of the refrigeration system after one flow channel 3 is blocked or fails, thereby improving the reliability and stability of the refrigeration system.
[0055] Preferably, the barrel body of the present invention further comprises a heat insulation layer (not shown in the figure), and the heat insulation layer is coated on the outside of the outer liner 2 .
[0056] The heat insulation layer is set as a heat insulation sleeve made of heat insulation material, which can effectively slow down the speed of heat exchange between the barrel body and the outside, prevent the loss of cold energy to the greatest extent, and retain the cold energy in the barrel body.
[0057] Preferably, the barrel body of the present invention further comprises a cold storage layer (not shown in the figure), and the cold storage layer is arranged between the outer liner 2 and the heat insulation layer.
[0058] Exemplarily, the cold storage layer is a phase change cold storage material. The cold storage layer can use the stored cold energy to assist the refrigeration system in refrigeration after the compressor stops, thereby reasonably adjusting the operating frequency of the compressor, helping to control energy consumption and control the temperature changes in the centrifugal chamber.
[0059] In addition, the centrifuge further provided by the utility model on the basis of the above barrel body has the technical effects possessed by the above barrel body due to the adoption of the above barrel body. Compared with the centrifuge before the improvement, the centrifuge of the utility model has higher refrigeration efficiency, simpler structure, optimized production process and reduced production cost.
[0060] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.
Claims
1. A barrel of a centrifuge, the centrifuge comprising a compressor, a condenser, and an expansion valve, characterized in that: The barrel comprises: An inner liner, wherein the inner liner forms a centrifugal cavity; An outer liner, the outer liner is welded and fixed to the inner liner and forms a heat exchange cavity with the inner liner; The heat exchange chamber is provided with a liquid inlet and a liquid outlet, the liquid inlet is communicated with the liquid outlet of the expansion valve, and the liquid outlet is communicated with the liquid return port of the compressor to form a refrigeration cycle and refrigerate the centrifugal chamber through the heat exchange chamber.
2. The barrel according to claim 1, characterized in that: The inner circumference of the outer pot is formed with closely arranged grooves, and the inner pot fits tightly with the outer pot so that the outer circumference of the inner pot and the grooves form a sealed flow channel, and the liquid inlet and the liquid outlet are respectively arranged at both ends of the flow channel.
3. The barrel according to claim 2, characterized in that: The outer bladder is configured as a blowing plate.
4. The barrel according to claim 2, characterized in that: The outer liner is configured as a stamping plate.
5. The barrel according to claim 3, characterized in that: The flow channel extends in a spiral shape around the barrel body, the liquid inlet is arranged at the top of the barrel body, and the liquid outlet is arranged at the bottom of the barrel body.
6. The barrel according to claim 3, characterized in that: The flow channel extends around the barrel body in a U-shaped turn, the liquid inlet is arranged at the top of the barrel body, and the liquid outlet is arranged at the bottom of the barrel body.
7. The barrel according to claim 5 or 6, characterized in that: The flow channel includes a first flow channel and a second flow channel arranged in parallel, the liquid inlet of the first flow channel and the liquid inlet of the second flow channel are both connected to the liquid outlet of the expansion valve, and the liquid outlet of the first flow channel and the liquid outlet of the second flow channel are both connected to the return liquid port of the compressor.
8. The barrel according to claim 1, characterized in that: The barrel body also includes a heat insulation layer, and the heat insulation layer is coated on the outside of the outer liner.
9. The barrel according to claim 8, characterized in that: The barrel body also includes a cold storage layer, which is arranged between the outer liner and the heat insulation layer.
10. A centrifuge, characterized in that: The centrifuge comprises the barrel according to any one of claims 1 to 9.