阅读说明：本技术 一种载冷循环系统 (Cold-carrying circulating system ) 是由 郭浩 公茂琼 于 2019-08-27 设计创作，主要内容包括：本发明提供的载冷循环系统,包括：混合工质制冷循环回路和载冷循环回路；所述混合工质制冷回路包括混合工质压缩机(101)、混合工质冷凝器(102)、回热换热器(103)、混合工质节流阀(104)；所述载冷循环回路包括载冷剂驱动泵(201)、载冷剂冷凝器(202)、载冷剂精密油分离器(203)和用户侧(204),本发明提供的载冷循环系统,利用具有低凝固点的纯或混合工质的普冷循环作为载冷循环,同时采用高可靠性的普冷温区驱动元件驱动,避免使用低可靠的低温循环泵,可实现-60℃乃至液氮温区的冷量远程传递,并且在用户侧载冷工质处于液相状态,易分配均匀,尤其适用于分体式用户的低温需求场合。(The invention provides a cold carrying circulation system, which comprises: a mixed working medium refrigeration circulation loop and a cold-carrying circulation loop; the mixed working medium refrigerating circuit comprises a mixed working medium compressor (101), a mixed working medium condenser (102), a regenerative heat exchanger (103) and a mixed working medium throttle valve (104); the cold-carrying circulation system provided by the invention utilizes the common cold circulation of pure or mixed working medium with low freezing point as cold-carrying circulation, and simultaneously adopts a high-reliability common cold temperature region driving element for driving, so that a low-reliable low-temperature circulation pump is avoided, the cold quantity remote transmission at minus 60 ℃ and even a liquid nitrogen temperature region can be realized, and the cold-carrying working medium at the user side is in a liquid phase state, is easy to distribute uniformly, and is particularly suitable for low-temperature demand occasions of split users.)

1. A cold-carrying cycle system, comprising: a mixed working medium refrigeration circulation loop and a cold-carrying circulation loop; the mixed working medium refrigerating circuit comprises a mixed working medium compressor (101), a mixed working medium condenser (102), a regenerative heat exchanger (103) and a mixed working medium throttle valve (104); the cold carrier circulation loop comprises a cold carrier drive pump (201), a cold carrier condenser (202), a cold carrier precision oil separator (203) and a user side (204); wherein:

A high-pressure refrigerant outlet of the mixed working medium compressor (101) is connected with a refrigerant high-pressure inlet of the mixed working medium condenser (102), a refrigerant high-pressure outlet of the mixed working medium condenser (102) is connected with a high-pressure refrigerant inlet of the regenerative heat exchanger (103), a high-pressure refrigerant outlet of the regenerative heat exchanger (103) is connected with a refrigerant high-pressure inlet of the mixed working medium throttle valve (104), and a refrigerant low-pressure outlet of the mixed working medium throttle valve (104) is connected with a low-pressure refrigerant inlet of the regenerative heat exchanger (103);

A high-pressure secondary refrigerant outlet of the secondary refrigerant drive pump (201) is connected with a high-pressure secondary refrigerant inlet of the secondary refrigerant condenser (202); a high-pressure secondary refrigerant outlet of the secondary refrigerant condenser (202) is connected with a high-pressure secondary refrigerant inlet of the precision oil separator (203); a high-pressure secondary refrigerant outlet of the precision oil separator (203) is connected with a first high-pressure secondary refrigerant inlet of the regenerative heat exchanger (103); a first high-pressure secondary refrigerant outlet of the regenerative heat exchanger (103) is connected with a high-pressure secondary refrigerant inlet of the user side (204); a high-pressure secondary refrigerant outlet of the user side (204) is connected with a second high-pressure secondary refrigerant inlet of the regenerative heat exchanger (103); a second high-pressure secondary refrigerant outlet of the regenerative heat exchanger (103) is connected with a low-pressure secondary refrigerant inlet of the secondary refrigerant drive pump (201); the low-pressure oil outlet of the precise oil separator (203) is connected with the low-pressure refrigerating medium inlet of the refrigerating medium compressor (201).

2. A cold-carrying cycle system according to claim 1, wherein the user side (204) can be divided into the low temperature requirements of n split users, n ≧ 2.

3. The chilled cycle system of claim 1 or 2, wherein the coolant comprises at least one of perfluorohexane, HFC-4310mee, HFE-7100, HFO-1336mzzZ, SF-70, and SF-10.

4. a cold-carrying cycle system, comprising: a mixed working medium refrigeration circulation loop and a cold-carrying circulation loop; the mixed working medium refrigerating circuit comprises a mixed working medium compressor (101), a mixed working medium condenser (102), a regenerative heat exchanger (103) and a mixed working medium throttle valve (104); the refrigerating cycle loop comprises a refrigerating medium compressor (2010), a refrigerating medium condenser (202), a mixed working medium refrigerating medium precooling heat exchanger (206), a refrigerating medium precise oil separator (203) and a user side (204); wherein:

A high-pressure refrigerant outlet of the mixed working medium compressor (101) is connected with a refrigerant high-pressure inlet of the mixed working medium condenser (102), a high-pressure refrigerant outlet of the mixed working medium condenser (102) is connected with a high-pressure refrigerant inlet of the secondary refrigerant precooling heat exchanger (206), a high-pressure refrigerant outlet of the secondary refrigerant precooling heat exchanger (206) is connected with a high-pressure refrigerant inlet of the backheating heat exchanger (103), a high-pressure refrigerant outlet of the backheating heat exchanger (103) is connected with a refrigerant high-pressure inlet of the mixed working medium throttle valve (104), and a refrigerant low-pressure outlet of the mixed working medium throttle valve (104) is connected with a low-pressure refrigerant inlet of the backheating heat exchanger (103);

a high-pressure secondary refrigerant outlet of the secondary refrigerant compressor (2010) is connected with a high-pressure secondary refrigerant inlet of the secondary refrigerant condenser (202); a high-pressure secondary refrigerant outlet of the secondary refrigerant condenser (202) is connected with a high-pressure secondary refrigerant inlet of the secondary refrigerant precooling heat exchanger (206); a high-pressure secondary refrigerant outlet of the secondary refrigerant precooling heat exchanger (206) is connected with a high-pressure secondary refrigerant inlet of the precision oil separator (203); a high-pressure secondary refrigerant outlet of the precision oil separator (203) is connected with a first high-pressure secondary refrigerant inlet of the regenerative heat exchanger (103); a first high-pressure secondary refrigerant outlet of the regenerative heat exchanger (103) is connected with a high-pressure secondary refrigerant inlet of the user side (204); a high-pressure secondary refrigerant outlet of the user side (204) is connected with a second high-pressure secondary refrigerant inlet of the regenerative heat exchanger (103); a second high-pressure secondary refrigerant outlet of the regenerative heat exchanger (103) is connected with a high-pressure secondary refrigerant inlet of the secondary refrigerant throttle valve (205); a high-pressure secondary refrigerant outlet of the secondary refrigerant throttling valve (205) is connected with a low-pressure secondary refrigerant inlet of the secondary refrigerant precooling heat exchanger (206); a low-pressure coolant outlet of the coolant pre-cooling heat exchanger (206) is connected to a low-pressure coolant inlet of the coolant compressor (2010); the low-pressure oil outlet of the precision oil separator (203) is connected with the low-pressure refrigerating medium inlet of the refrigerating medium compressor (2010).

5. A cold-carrying cycle system according to claim 3, wherein the user side (204) can be divided into the low temperature requirements of n split users, n ≧ 2.

6. The cold-carrier cycle system of claims 4 and 5, wherein the coolant comprises at least one of isobutane, propane, R22, R1234ze (E), R134a, R152a, R227ea, R236 ea.

Technical Field

the invention relates to the technical field of cold carrying, in particular to a cold carrying circulating system.

Background

cold-carrying technologies are often used in central air conditioning and industrial refrigeration applications, and are less applicable at low temperatures. In the traditional cold carrying circulation, a cold carrying agent is firstly cooled in an evaporator and then pumped to a cooled object, and only the cold conveying function exists, but the cold carrying agent has no refrigerating effect. At present, in the fields of scientific research, medical treatment, pharmacy, industrial production and the like, the refrigerating temperature of the occasions is required to be below 60 ℃ below zero or even reach the temperature of liquid nitrogen, and meanwhile, the occasions have the requirements of no vibration noise, high safety and reliability and the like, such as low-temperature cold therapy, a low-temperature refrigerator, a low-temperature cold storage, a low-temperature constant-temperature bath system and the like, but a split structure is adopted, and the remote cold transmission by using a secondary refrigerant is a feasible scheme. However, the use of pumped coolant is not feasible in the low temperature region due to the lack of reliable, commercially available low flow cryogenic circulating pumps in the sub-60 ℃ region.

Disclosure of Invention

In view of the above, there is a need to provide a safe and reliable cold-carrying circulation system at-60 ℃ or below, even up to the temperature of liquid nitrogen, to overcome the drawbacks of the prior art.

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

In one aspect, the present invention provides a cooling cycle system, including: a mixed working medium refrigeration circulation loop and a cold-carrying circulation loop; the mixed working medium refrigerating circuit comprises a mixed working medium compressor (101), a mixed working medium condenser (102), a regenerative heat exchanger (103) and a mixed working medium throttle valve (104); the cold carrier circulation loop comprises a cold carrier drive pump (201), a cold carrier condenser (202), a cold carrier precision oil separator (203) and a user side (204); wherein:

A high-pressure refrigerant outlet of the mixed working medium compressor (101) is connected with a refrigerant high-pressure inlet of the mixed working medium condenser (102), a refrigerant high-pressure outlet of the mixed working medium condenser (102) is connected with a high-pressure refrigerant inlet of the regenerative heat exchanger (103), a high-pressure refrigerant outlet of the regenerative heat exchanger (103) is connected with a refrigerant high-pressure inlet of the mixed working medium throttle valve (104), and a refrigerant low-pressure outlet of the mixed working medium throttle valve (104) is connected with a low-pressure refrigerant inlet of the regenerative heat exchanger (103);

A high-pressure secondary refrigerant outlet of the secondary refrigerant drive pump (201) is connected with a high-pressure secondary refrigerant inlet of the secondary refrigerant condenser (202); a high-pressure secondary refrigerant outlet of the secondary refrigerant condenser (202) is connected with a high-pressure secondary refrigerant inlet of the precision oil separator (203); a high-pressure secondary refrigerant outlet of the precision oil separator (203) is connected with a first high-pressure secondary refrigerant inlet of the regenerative heat exchanger (103); a first high-pressure secondary refrigerant outlet of the regenerative heat exchanger (103) is connected with a high-pressure secondary refrigerant inlet of the user side (204); a high-pressure secondary refrigerant outlet of the user side (204) is connected with a second high-pressure secondary refrigerant inlet of the regenerative heat exchanger (103); a second high-pressure secondary refrigerant outlet of the regenerative heat exchanger (103) is connected with a low-pressure secondary refrigerant inlet of the secondary refrigerant drive pump (201); the low-pressure oil outlet of the precise oil separator (203) is connected with the low-pressure refrigerating medium inlet of the refrigerating medium driving pump (201).

In some preferred embodiments, the customer side (204) may be divided into the low temperature needs of n split customers, n ≧ 2.

In some preferred embodiments, the coolant comprises at least one of perfluorohexane, HFC-4310mee, HFE-7100, HFO-1336mzzZ, SF-70, and SF-10.

In another aspect, the present invention further provides a cooling cycle system, including: a mixed working medium refrigeration circulation loop and a cold-carrying circulation loop; the mixed working medium refrigerating circuit comprises a mixed working medium compressor (101), a mixed working medium condenser (102), a regenerative heat exchanger (103) and a mixed working medium throttle valve (104); the refrigerating cycle loop comprises a refrigerating medium compressor (2010), a refrigerating medium condenser (202), a mixed working medium refrigerating medium precooling heat exchanger (206), a refrigerating medium precise oil separator (203) and a user side (204); wherein:

A high-pressure refrigerant outlet of the mixed working medium compressor (101) is connected with a refrigerant high-pressure inlet of the mixed working medium condenser (102), a high-pressure refrigerant outlet of the mixed working medium condenser (102) is connected with a high-pressure refrigerant inlet of the secondary refrigerant precooling heat exchanger (206), a high-pressure refrigerant outlet of the secondary refrigerant precooling heat exchanger (206) is connected with a high-pressure refrigerant inlet of the backheating heat exchanger (103), a high-pressure refrigerant outlet of the backheating heat exchanger (103) is connected with a refrigerant high-pressure inlet of the mixed working medium throttle valve (104), and a refrigerant low-pressure outlet of the mixed working medium throttle valve (104) is connected with a low-pressure refrigerant inlet of the backheating heat exchanger (103);

a high-pressure secondary refrigerant outlet of the secondary refrigerant compressor (2010) is connected with a high-pressure secondary refrigerant inlet of the secondary refrigerant condenser (202); a high-pressure secondary refrigerant outlet of the secondary refrigerant condenser (202) is connected with a high-pressure secondary refrigerant inlet of the secondary refrigerant precooling heat exchanger (206); a high-pressure secondary refrigerant outlet of the secondary refrigerant precooling heat exchanger (206) is connected with a high-pressure secondary refrigerant inlet of the precision oil separator (203); a high-pressure secondary refrigerant outlet of the precision oil separator (203) is connected with a first high-pressure secondary refrigerant inlet of the regenerative heat exchanger (103); a first high-pressure secondary refrigerant outlet of the regenerative heat exchanger (103) is connected with a high-pressure secondary refrigerant inlet of the user side (204); a high-pressure secondary refrigerant outlet of the user side (204) is connected with a second high-pressure secondary refrigerant inlet of the regenerative heat exchanger (103); a second high-pressure secondary refrigerant outlet of the regenerative heat exchanger (103) is connected with a high-pressure secondary refrigerant inlet of the secondary refrigerant throttle valve (205); a high-pressure secondary refrigerant outlet of the secondary refrigerant throttling valve (205) is connected with a low-pressure secondary refrigerant inlet of the secondary refrigerant precooling heat exchanger (206); a low-pressure coolant outlet of the coolant pre-cooling heat exchanger (206) is connected to a low-pressure coolant inlet of the coolant compressor (2010); the low-pressure oil outlet of the precision oil separator (203) is connected with the low-pressure refrigerating medium inlet of the refrigerating medium compressor (2010).

In some preferred embodiments, the customer side (204) may be divided into the low temperature needs of n split customers, n ≧ 2.

In some preferred embodiments, the coolant comprises at least one of isobutane, propane, R22, R1234ze (E), R134a, R152a, R227ea, R236 ea.

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

The invention provides a cold carrying circulation system, which comprises: a mixed working medium refrigeration circulation loop and a cold-carrying circulation loop; the mixed working medium refrigerating circuit comprises a mixed working medium compressor (101), a mixed working medium condenser (102), a regenerative heat exchanger (103) and a mixed working medium throttle valve (104); the cold-carrying circulation system provided by the invention utilizes the common cold circulation of pure or mixed working medium with low freezing point as cold-carrying circulation, and adopts a high-reliability common cold temperature region compressor and pump drive, so that a low-reliable low-temperature circulation pump is avoided, the cold quantity remote transmission at-60 ℃ and even a liquid nitrogen temperature region can be realized, the cold-carrying working medium at the user side is in a liquid phase state, and the cold-carrying circulation loop is easy to distribute uniformly, and is particularly suitable for low-temperature demand occasions of split users.

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 diagram of a cooling cycle system provided in embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of a cooling cycle system according to embodiment 2 of the present invention.

Fig. 3 is a schematic user-side structure diagram of a cooling cycle system provided in embodiment 1 or 2 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.