阅读说明：本技术 一种分体式超低温冷库及供冷系统 (Split type ultra-low temperature freezer and cooling system ) 是由 公茂琼 郭浩 于 2019-08-27 设计创作，主要内容包括：本发明提供的分体式超低温冷库及供冷系统,包括低温冷站单元(RC)及分体式低温冰箱单元(XC),所述低温冷站单元(RC)包括压缩机(10)、风冷/水冷冷凝器(20)、回热换热器(30)、节流阀(40)、蒸发器(50)、载冷剂储罐(60)及载冷剂输运泵(70)；分体式低温冰箱单元(XC)包括n组分体式低温冰箱及对应n组制冷剂蒸发器,本发明提供的分体式超低温冷库及供冷系统,载冷剂处于单相状态,易分配,解决了气相两相制冷剂易分配不均的难题,能够保证分体式低温冰箱内部的温度均匀性；且采用分体式结构易于维护,安全可靠。(The invention provides a split type ultralow temperature refrigeration house and a cold supply system, which comprise a low-temperature cold station unit (RC) and a split type low-temperature refrigerator unit (XC), wherein the low-temperature cold station unit (RC) comprises a compressor (10), an air-cooled/water-cooled condenser (20), a regenerative heat exchanger (30), a throttle valve (40), an evaporator (50), a secondary refrigerant storage tank (60) and a secondary refrigerant transport pump (70); the split type cryogenic refrigerator unit (XC) comprises n split type cryogenic refrigerators and n corresponding refrigerant evaporators, and the split type ultralow-temperature cold storage and the cooling system provided by the invention have the advantages that the secondary refrigerant is in a single-phase state and is easy to distribute, the problem that a gas-phase two-phase refrigerant is easy to distribute unevenly is solved, and the temperature uniformity in the split type cryogenic refrigerator can be ensured; and the split structure is easy to maintain, safe and reliable.)

1. The utility model provides a split type ultra-low temperature freezer and cooling system which characterized in that includes: the system comprises a low-temperature cold station unit (RC) and a split type low-temperature refrigerator unit (XC), wherein the low-temperature cold station unit (RC) comprises a compressor (10), an air-cooled/water-cooled condenser (20), a regenerative heat exchanger (30), a throttle valve (40), an evaporator (50), a secondary refrigerant storage tank (60) and a secondary refrigerant transport pump (70); the split type low-temperature refrigerator unit (XC) comprises n groups of split type low-temperature refrigerators and n groups of corresponding refrigerant evaporation, wherein n is more than or equal to 2; wherein:

A high-pressure refrigerant outlet of the mixed working medium compressor (10) is connected with a refrigerant high-pressure inlet of the mixed working medium condenser (20), a refrigerant high-pressure outlet of the mixed working medium condenser (20) is connected with a high-pressure refrigerant inlet of the regenerative heat exchanger (30), a high-pressure refrigerant outlet of the regenerative heat exchanger (30) is connected with a refrigerant high-pressure inlet of the mixed working medium throttle valve (40), a refrigerant low-pressure outlet of the mixed working medium throttle valve (40) is connected with a low-pressure refrigerant inlet of the secondary refrigerant storage tank (60), a low-pressure refrigerant inlet of the secondary refrigerant storage tank (60) is connected with a low-pressure refrigerant inlet of the regenerative heat exchanger (30), and a low-pressure refrigerant outlet of the regenerative heat exchanger (30) is connected with a low-pressure refrigerant inlet of the mixed working medium compressor (;

The refrigerating medium outlet of the refrigerating medium storage tank (60) is connected with the refrigerating medium inlet of the refrigerating medium transportation pump (70), the refrigerating medium outlet of the refrigerating medium transportation pump (70) is respectively connected with the refrigerating medium evaporator inlet of the nth # (n is 1, 2, … … and n) of the n-component type low-temperature refrigerator, and the refrigerating medium evaporator outlet of the nth # (n is 1, 2, … … and n) of the n-component type low-temperature refrigerator is connected with the refrigerating medium inlet of the refrigerating medium storage tank (60).

2. The split ultra-low temperature refrigerator and cooling system according to claim 1, wherein the cryogenic station unit (RC) further comprises a liquid nitrogen auxiliary cooling module, the liquid nitrogen auxiliary cooling module comprises an auto-pressurizing liquid nitrogen tank (80) and a cryogenic solenoid valve (81), the split cryogenic refrigerator unit (XC) further comprises n corresponding sets of liquid nitrogen evaporators, a liquid nitrogen outlet of the auto-pressurizing liquid nitrogen tank (80) is connected to a liquid nitrogen inlet of the cryogenic solenoid valve (81), a liquid nitrogen outlet of the cryogenic solenoid valve (81) is connected to an nn # (n-11, 22, … …, nn) liquid nitrogen evaporator inlet of the n sets of standard specification split cryogenic refrigerators, and an nn # (n-11, 22, … …, nn) liquid nitrogen evaporator outlet of the n sets of standard specification split cryogenic refrigerators is open.

3. The split type ultra-low temperature refrigerator and cold supply system according to claim 1, wherein the cryogenic cooling station unit (RC) further comprises a liquid nitrogen auxiliary refrigeration module, the liquid nitrogen auxiliary refrigeration module comprises a self-pressurization type liquid nitrogen tank (80), a cryogenic solenoid valve (81) and a liquid nitrogen heat exchanger (82) in the secondary refrigerant storage tank (60), a liquid nitrogen outlet of the self-pressurization type liquid nitrogen tank (80) is connected with a liquid nitrogen inlet of the cryogenic solenoid valve (81), a liquid nitrogen outlet of the cryogenic solenoid valve (81) is connected with an inlet of the liquid nitrogen heat exchanger (82), and an outlet of the liquid nitrogen heat exchanger (82) is open.

4. The split ultra-low temperature refrigerator and cooling system of claim 1, wherein the coolant is at least one of octamethyltrisiloxane, decamethyltetrasiloxane, dodecamethylpentasiloxane, tetradecylhexasiloxane, n-propylcyclohexane, vinyltoluene, butylbenzene, sec-butylbenzene, o-cymene, p-cymene, hexyl acetate, butyl valerate, perfluorohexane, 2H, 3H-perfluoropentane and perfluoro (2-methyl-3-pentanone), HFC-4310mee, HFE-7100, HFO-1336mzzZ, SF-70 and SF-10.

Technical Field

the invention relates to the technical field of low-temperature refrigeration, in particular to a split type ultralow-temperature refrigeration house and a cooling system.

Background

Cryopreservation is currently the most widely used method for non-destructive preservation of high-end food materials (seafood, etc.), biological tissues, pharmaceutical products, and the like. The low temperature can effectively inhibit the activity of the biological material and reduce the consumption caused by the activity, and simultaneously, the speed of external microorganisms and other biochemical reactions is obviously reduced, so that the influence of the outside on the material is reduced, the material is stored for a long time, and the quality of the material is basically kept unchanged. Generally, the lower the storage temperature, the longer the biological activity is preserved. With the improvement of the medical level in China, the single low-temperature refrigerator cannot meet the storage requirements of complex and various sample libraries. Compared with a plurality of sets of ultra-low temperature refrigerators which are combined, the high-capacity ultra-low temperature refrigerator has the advantages of obvious one-time investment cost and operation cost under the same storage space, saves energy by about more than 30 percent, and has very obvious advantages on centralized management and maintenance of samples. The process scheme of the standardized split type ultralow-temperature cold storage device is established, the standardized refrigerating unit module, the split type ultralow-temperature cold storage body module and the quick-connection heat-preservation pipeline module are delivered from a factory and are quickly assembled on site, and the site construction is shortened.

The reliability and safety of the large-capacity ultra-low temperature refrigerator are particularly important for the storage quality of medical supplies. In the actual use process, the repeated freezing and thawing of the sample can be caused in the power failure, the refrigeration system failure and the sampling process, and the permanent damage of the sample is easily caused. Therefore, there is a need to develop efficient and stable refrigeration technology to create a fast response auxiliary emergency cooling device.

disclosure of Invention

Therefore, it is necessary to provide a split type ultra-low temperature refrigerator and a cooling system to overcome the drawbacks of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a split type ultra-low temperature refrigerator and a cooling system, comprising: the system comprises a low-temperature cold station unit (RC) and a split type low-temperature refrigerator unit (XC), wherein the low-temperature cold station unit (RC) comprises a compressor (10), an air-cooled/water-cooled condenser (20), a regenerative heat exchanger (30), a throttle valve (40), an evaporator (50), a secondary refrigerant storage tank (60) and a secondary refrigerant transport pump (70); the split type low-temperature refrigerator unit (XC) comprises n groups of split type low-temperature refrigerators and n groups of corresponding refrigerant evaporation, wherein n is more than or equal to 2; wherein:

A high-pressure refrigerant outlet of the mixed working medium compressor (10) is connected with a refrigerant high-pressure inlet of the mixed working medium condenser (20), a refrigerant high-pressure outlet of the mixed working medium condenser (20) is connected with a high-pressure refrigerant inlet of the regenerative heat exchanger (30), a high-pressure refrigerant outlet of the regenerative heat exchanger (30) is connected with a refrigerant high-pressure inlet of the mixed working medium throttle valve (40), a refrigerant low-pressure outlet of the mixed working medium throttle valve (40) is connected with a low-pressure refrigerant inlet of the secondary refrigerant storage tank (60), a low-pressure refrigerant inlet of the secondary refrigerant storage tank (60) is connected with a low-pressure refrigerant inlet of the regenerative heat exchanger (30), and a low-pressure refrigerant outlet of the regenerative heat exchanger (30) is connected with a low-pressure refrigerant inlet of the mixed working medium compressor (;

The refrigerating medium outlet of the refrigerating medium storage tank (60) is connected with the refrigerating medium inlet of the refrigerating medium transportation pump (70), the refrigerating medium outlet of the refrigerating medium transportation pump (70) is respectively connected with the refrigerating medium evaporator inlet of the nth # (n is 1, 2, … … and n) of the n-component type low-temperature refrigerator, and the refrigerating medium evaporator outlet of the nth # (n is 1, 2, … … and n) of the n-component type low-temperature refrigerator is connected with the refrigerating medium inlet of the refrigerating medium storage tank (60).

In some preferred embodiments, the cryogenic cold station unit (RC) further comprises a liquid nitrogen auxiliary refrigeration module, the liquid nitrogen auxiliary refrigeration module comprises an auto-pressurizing liquid nitrogen tank (80) and a cryogenic solenoid valve (81), the split cryogenic refrigerator unit (XC) further comprises n corresponding groups of liquid nitrogen evaporators, a liquid nitrogen outlet of the auto-pressurizing liquid nitrogen tank (80) is connected to a liquid nitrogen inlet of the cryogenic solenoid valve (81), a liquid nitrogen outlet of the cryogenic solenoid valve (81) is connected to an nth # (n ═ 11, 22, … …, nn) liquid nitrogen evaporator inlet of the n-group split cryogenic refrigerator, and an nth # (n ═ 11, 22, … …, nn) liquid nitrogen evaporator outlet of the n-group standard specification split cryogenic refrigerator is empty.

In some preferred embodiments, the cryogenic cold station unit (RC) further comprises a liquid nitrogen auxiliary refrigeration module, the liquid nitrogen auxiliary refrigeration module comprises a self-pressurization type liquid nitrogen tank (80), a cryogenic solenoid valve (81) and a liquid nitrogen heat exchanger (82) in the secondary refrigerant storage tank (60), a liquid nitrogen outlet of the self-pressurization type liquid nitrogen tank (80) is connected with a liquid nitrogen inlet of the cryogenic solenoid valve (81), a liquid nitrogen outlet of the cryogenic solenoid valve (81) is connected with an inlet of the liquid nitrogen heat exchanger (82), and an outlet of the liquid nitrogen heat exchanger (82) is empty.

In some preferred embodiments, the coolant is at least one of octamethyltrisiloxane, decamethyltetrasiloxane, dodecamethylpentasiloxane, tetradecylhexasiloxane, n-propylcyclohexane, vinyltoluene, butylbenzene, sec-butylbenzene, o-cymene, p-cymene, hexyl acetate, butyl valerate, perfluorohexane, 2H, 3H-perfluoropentane, and perfluoro (2-methyl-3-pentanone), HFC-4310mee, HFE-7100, HFO-1336mzzZ, SF-70, and SF-10.

The invention adopts the technical scheme that the method has the advantages that:

The invention provides a split type ultralow temperature refrigeration house and a cold supply system, which comprise a low-temperature cold station unit (RC) and a split type low-temperature refrigerator unit (XC), wherein the low-temperature cold station unit (RC) comprises a compressor (10), an air-cooled/water-cooled condenser (20), a regenerative heat exchanger (30), a throttle valve (40), an evaporator (50), a secondary refrigerant storage tank (60) and a secondary refrigerant transport pump (70); the split type cryogenic refrigerator unit (XC) comprises n split type cryogenic refrigerators and n groups of corresponding refrigerants to be evaporated, and the split type ultralow-temperature cold storage and the cooling system provided by the invention have the advantages that the secondary refrigerants are in a single-phase state and are easy to distribute, the problem that gas-phase and two-phase refrigerants are easy to distribute unevenly is solved, and the temperature uniformity in the split type cryogenic refrigerator can be ensured; and the split structure is easy to maintain, safe and reliable.

In addition, split type ultra-low temperature freezer and cooling system, low temperature cold station unit (RC) still includes the supplementary refrigeration module of liquid nitrogen for quick response under the emergency power-off state guarantees the normal operating of low temperature refrigerator, and the sample is stored in the protection.

Drawings

in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a split type ultra-low temperature refrigerator and a cooling system provided in embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of the split type ultra-low temperature refrigerator and the cooling system provided in embodiment 2 of the present invention.

fig. 3 is a schematic structural view of a split type ultra-low temperature refrigerator and a cooling system provided in embodiment 3 of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.