WO2021000600A1

WO2021000600A1 - Refrigeration system

Info

Publication number: WO2021000600A1
Application number: PCT/CN2020/079562
Authority: WO
Inventors: 张德鹏
Original assignee: 深圳市瑞沃德生命科技有限公司
Priority date: 2019-07-04
Filing date: 2020-03-17
Publication date: 2021-01-07
Also published as: CN110332728A

Abstract

Provided is a refrigeration system, which comprises a compressor (1), a condenser (3), a centrifuge rotor (5), a centrifuge freezing cavity (6), a semiconductor refrigerator (7), a centrifuge driving system (8) and a copper coil pipe (10); wherein the centrifuge rotor (5) is arranged in the centrifuge freezing cavity (6), the centrifuge driving system (8) is connected with the centrifuge rotor (5), the compressor (1) is connected with the condenser (3), the condenser (3) is connected with the copper coil pipe (10), the copper coil pipe (10) is connected with the compressor (1); the copper coil pipe (10) is coiled on the inner wall of the centrifuge freezing cavity (6), and the semiconductor refrigerator (7) is coiled on the inner wall of the centrifuge freezing cavity (6). The compressor (1) operates at a constant frequency without too much vibration, meanwhile, the semiconductor refrigerator (7) has a small size, has no mechanical transmission part, no noise in operation, no liquid or gaseous working medium, and no environmental pollution.

Description

A refrigeration system

This application is based on the Chinese patent application with the application number 201910599081.4 and the filing date on July 4, 2019, and claims its priority. The entire content of the application is hereby incorporated into this application as a whole.

Technical field

This application relates to the field of refrigeration technology, and in particular to a refrigeration system.

Background technique

The freezing system centrifuges commonly used in the market are mainly refrigerated by compressors. This kind of freezing system provides mechanical energy by the motor, and the compressor performs work on the refrigeration system. The refrigeration system is made on the principle of evaporating and absorbing heat when the refrigerant has a low boiling point. To meet the separation requirements within a certain temperature control range of the freezing chamber of the freezing centrifuge.

The compressors of the existing freezing system centrifuges are mainly divided into two categories, one is an inverter compressor, and the other is a fixed frequency compressor. Because the rotor of the centrifuge will rub against the air to generate heat during high-speed operation, and because the freezing chamber is a closed environment, the temperature of the freezing chamber will increase. Assuming that the freezing chamber should be kept at a constant temperature, when a fixed frequency compressor is used, the fixed frequency compressor must be opened and closed continuously, but this will cause the centrifuge to vibrate greatly and affect the separation effect of the centrifuge ; When using an inverter compressor, although the vibration problem will be smaller than that of a fixed frequency compressor, there will also be vibration problems.

Application content

The technical problem to be solved by the embodiments of the present application is how to solve the problems of high vibration and high noise of the centrifuge in the existing refrigeration system.

In order to solve the above problems, an embodiment of the present application proposes a refrigeration system, the refrigeration system includes a compressor, a condenser, a centrifuge rotor, a centrifuge freezing cavity, a semiconductor refrigerator, a centrifuge drive system, and a copper coil; The centrifuge rotor is arranged in the centrifuge ice cavity, the centrifuge drive system is connected with the centrifuge rotor; the compressor is connected with the condenser, and the condenser is connected with the copper coil The copper coil is connected to the compressor; the copper coil is coiled on the inner wall of the centrifuge freezing cavity, and the semiconductor refrigerator is coiled on the inner wall of the centrifuge freezing cavity.

A further technical solution is that the copper coils and the semiconductor refrigerators are alternately arranged on the inner wall of the freezing cavity of the centrifuge.

A further technical solution is that the material of the inner wall of the freezing cavity of the centrifuge is stainless steel.

A further technical solution is that the copper coil is welded to the inner wall of the freezing cavity of the centrifuge.

A further technical solution is that the outer side of the inner wall of the freezing cavity of the centrifuge wraps the foam.

A further technical solution is that the compressor is connected to the condenser through a high-pressure pipe.

A further technical solution is that the condenser is connected to the copper coil through a capillary tube.

A further technical solution is that the copper coil is connected to the copper coil through a low pressure tube.

In the embodiment of the present application, a secondary refrigeration mode with compressor refrigeration as the main refrigeration mode and semiconductor refrigeration mode as the auxiliary mode is adopted. By setting the compressor to work at a constant frequency, the compressor will not have too much vibration. At the same time, the size of the semiconductor refrigerator is small, there is no mechanical transmission part, no noise during operation, and no liquid or gaseous working medium. Does not pollute the environment.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. Ordinary technicians can obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a refrigeration system proposed by an embodiment of the application;

Fig. 2 is a schematic structural diagram of a centrifuge freezing cavity of a refrigeration system according to an embodiment of the application.

Reference number

Compressor 1, high pressure tube 2, condenser 3, capillary tube 4, centrifuge rotor 5, centrifuge freezing chamber 6, semiconductor refrigerator 7, centrifuge drive system 8, low pressure tube 9, copper coil 10, inner wall 11 , Foam 12.

Detailed ways

The technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Similar component numbers in the drawings represent similar components. Obviously, the embodiments to be described below are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.

It should be understood that when used in this specification and the appended claims, the terms "including" and "including" indicate the existence of the described features, wholes, steps, operations, elements and/or components, but do not exclude one or The existence or addition of multiple other features, wholes, steps, operations, elements, components, and/or collections thereof.

It should also be understood that the terms used in the description of the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present application. As used in the description of the embodiments of the present application and the appended claims, unless the context clearly indicates other circumstances, the singular forms "a", "an" and "the" are intended to include plural forms.

Referring to Figures 1-2, an embodiment of the present application proposes a refrigeration system. As can be seen from the figure, the refrigeration system includes a compressor 1, a condenser 3, a centrifuge rotor 5, a centrifuge freezing chamber 6, a semiconductor refrigerator 7, and a centrifuge Machine drive system 8 and copper coil 10.

The centrifuge rotor 5 is arranged in the centrifuge freezing cavity 6, and the centrifuge driving system 8 is connected with the centrifuge rotor 5 for driving the centrifuge rotor 5 to move. The compressor 1 is connected to the condenser 3, the condenser 3 is connected to the copper coil 10, and the copper coil 10 is connected to the compressor 1. The copper coil 10 is coiled on the inner wall 11 of the freezing cavity 6 of the centrifuge. The semiconductor refrigerator 7 is coiled on the inner wall 11 of the freezing cavity 6 of the centrifuge.

Further, the compressor 1 is connected to the condenser 3 through a high-pressure pipe 2. The condenser 3 is connected to the copper coil 10 through a capillary tube 4. The copper coil 10 is connected to the copper coil 10 through a low pressure tube 9.

In this application, the compressor 1, the condenser 3 and the copper coil 10 constitute a primary refrigeration system. The refrigerant in the compressor 1 changes from gas to liquid in the condenser 3 through the high-pressure pipe 2 under the action of the compressor 1, which is a process of heat dissipation. The liquid refrigerant in the condenser 3 passes through the capillary tube 4 and then to the copper coil 10 in the centrifuge freezing chamber 6. In this process, the refrigerant changes from liquid to gas, which is a heat-absorbing process to achieve cooling effect. The refrigerant then returns to the compressor 1 through the low pressure pipe 9 to form a cycle.

In some embodiments, the compressor 1 is an inverter compressor, which runs at a constant speed to keep the compressor running stably; the compressor 1 can also be a fixed-frequency compressor with a rated power, and those skilled in the art can adjust the compressor according to actual refrigeration requirements. Select the power of the compressor.

The semiconductor refrigerator 7 is closely attached to the inner wall 11 of the freezing chamber 6 of the centrifuge, which is a secondary refrigeration circuit. First, the compressor 1 works to make the temperature of the centrifugal chamber reach or close to the set temperature (for example, 4°C). At this time, the compressor 1 runs at a constant speed, and the compressor runs very stably without causing major Vibration will not affect the separation effect of the adapter of the centrifuge rotor 5. When the temperature in the centrifuge freezing chamber 6 fluctuates, the semiconductor refrigerator 7 starts to work to make the temperature in the centrifuge freezing chamber 6 reach the set value. At this time, there is no need to change the working condition of the compressor 1, so The normal separation of the adapter of the centrifuge rotor 5 is ensured.

Further, the material of the inner wall 11 of the centrifuge freezing cavity 6 is stainless steel. The copper coil 10 is welded to the inner wall 11 of the freezing chamber 6 of the centrifuge. As a result, the copper coil 10 can better contact the inner wall 11 of the centrifuge freezing cavity 6 and improve the heat dissipation effect.

Further, the copper coil 10 and the semiconductor refrigerator 7 are alternately arranged on the inner wall 11 of the centrifuge freezing cavity 6 so that heat can be dissipated to the centrifuge freezing cavity 6 more evenly.

Further, the outer side of the inner wall 11 of the centrifuge freezing cavity 6 wraps the foam 12, and the foam 12 plays a role of heat preservation, which effectively reduces the heat loss.

In the embodiment of the present application, a secondary refrigeration mode with compressor refrigeration as the main refrigeration mode and semiconductor refrigeration mode as the auxiliary mode is adopted. By setting the compressor to work at a constant frequency, the compressor will not have too much vibration. At the same time, the size of the semiconductor refrigerator 7 is small, there is no mechanical transmission part, no noise during operation, and no liquid or gaseous working medium. Therefore, it does not pollute the environment, and the refrigeration parameters are not affected by the spatial direction and gravity, and can work normally under large mechanical overload conditions; by adjusting the size of the working current, the refrigeration rate can be easily adjusted; by switching the current direction, the refrigerator can be made Transition from cooling state to heating working state; fast acting speed, long service life, and easy to control.

In the above-mentioned embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in an embodiment, reference may be made to related descriptions of other embodiments.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, even if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.

The above are specific implementations of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications within the technical scope disclosed in this application. Or replacement, these modifications or replacements should be covered within the scope of protection of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Summary of the invention

technical problem

The solution to the problem

The beneficial effects of the invention

Claims

A refrigeration system, characterized in that the refrigeration system includes a compressor, a condenser, a centrifuge rotor, a centrifuge freezing cavity, a semiconductor refrigerator, a centrifuge drive system, and a copper coil; the centrifuge rotor is arranged at In the centrifuge freezing chamber, the centrifuge drive system is connected with the centrifuge rotor; the compressor is connected with the condenser, the condenser is connected with the copper coil, and the copper coil Connected with the compressor; the copper coil is coiled on the inner wall of the centrifuge freezing cavity, and the semiconductor refrigerator is coiled on the inner wall of the centrifuge freezing cavity.
The refrigeration system according to claim 1, wherein the copper coil and the semiconductor refrigerator are alternately arranged on the inner wall of the freezing cavity of the centrifuge.
The refrigeration system according to claim 1, wherein the material of the inner wall of the freezing cavity of the centrifuge is stainless steel.
The refrigeration system according to claim 3, wherein the copper coil is welded to the inner wall of the freezing cavity of the centrifuge.
The refrigeration system according to claim 1, wherein the outer side of the inner wall of the freezing cavity of the centrifuge is wrapped with foam.
The refrigeration system according to claim 1, wherein the compressor is connected to the condenser through a high-pressure pipe.
The refrigeration system according to claim 6, wherein the condenser is connected to the copper coil through a capillary tube.
The refrigeration system according to claim 7, wherein the copper coil is connected to the copper coil through a low pressure tube.