CN221301633U

CN221301633U - Air-cooled low-temperature refrigerator equipment with temperature of minus 60 DEG C

Info

Publication number: CN221301633U
Application number: CN202421277800.3U
Authority: CN
Inventors: 纪育群; 纪牧淦
Original assignee: Shantou Xinchangxin Refrigeration Equipment Co ltd
Current assignee: Shantou Xinchangxin Refrigeration Equipment Co ltd
Priority date: 2024-06-06
Filing date: 2024-06-06
Publication date: 2024-07-09
Anticipated expiration: 2034-06-06

Abstract

The utility model provides air-cooled low-temperature refrigerator equipment at the temperature of 60 ℃ below zero, which mainly comprises a compression mechanism, a condenser, a thermal expansion valve and an evaporator, wherein the compression mechanism is a first compressor and a second compressor respectively, the condenser is a first-stage condenser and a second-stage condenser respectively, the first compressor is connected with the first-stage condenser, a refrigerant sequentially passes through the second compressor, the fin-type condenser, the second-stage condenser, the thermal expansion valve and the evaporator after passing through the first-stage condenser, and the air return of the evaporator enters the first compressor, so that heat exchange is performed between the first-stage condenser and the second-stage condenser. The utility model optimizes the internal configuration and the composition structure of the refrigerator, ensures that the refrigerator can reach the working condition of minus 60 ℃ by matching with glycol cooling liquid, has small volume, light weight and low cost compared with the conventional refrigerator, optimizes the refrigeration effect and improves the use efficiency.

Description

Air-cooled low-temperature refrigerator equipment with temperature of minus 60 DEG C

Technical Field

The utility model relates to the technical field of refrigerator equipment structures, in particular to air-cooled low-temperature refrigerator equipment with the temperature of 60 ℃ below zero.

Background

At present, the refrigerator mainly provides a stable cooling environment for the main shaft through an efficient refrigerating system, particularly takes away heat generated by the main shaft rapidly through a circulating water flow mode, and discharges the heat through the refrigerating system, so that the main shaft is in a stable working temperature range. The existing refrigerator has the working condition of +5 ℃ to +40 ℃, can not further reduce the cooling temperature, and has a general cooling effect.

Disclosure of utility model

The utility model aims at providing air-cooled low-temperature refrigerator equipment with the temperature of minus 60 ℃ aiming at the prior art, and can achieve the working condition of minus 60 ℃ through multistage cooling, thereby effectively improving the refrigeration efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

The utility model relates to air-cooled low-temperature refrigerator equipment with the temperature of 60 ℃ below zero, which mainly comprises a compression mechanism, a condenser, a thermal expansion valve and an evaporator, wherein the compression mechanism is a first compressor and a second compressor respectively, the condenser is a first-stage condenser and a second-stage condenser respectively, the first compressor is connected with the first-stage condenser, a refrigerant sequentially passes through the second compressor, the fin-type condenser, the second-stage condenser, the thermal expansion valve and the evaporator after passing through the first-stage condenser, and the air returned by the evaporator enters the first compressor, so that heat exchange is performed between the first-stage condenser and the second-stage condenser.

In the scheme, the tee joint is arranged at the output end of the secondary condenser and is respectively connected with the thermal expansion valve and the pressure regulating valve, and the output of the pressure regulating valve flows back to the first compressor after passing through the expansion tank.

Further, a first liquid storage tank and a first dry filter are arranged between the fin type condenser and the secondary condenser, and a second liquid storage tank and a second dry filter are arranged between the secondary condenser and the thermal expansion valve.

Further, the evaporator output is fed to the apparatus via a liquid pump.

Further, the two sides of the fin type condenser are respectively provided with 4 rows of pipelines, fins on the fin type condenser are made of optical foil, the distance between straight sheets of the open window is 2.0mm, galvanized plates with the thickness of 1.2mm are adopted around the fin type condenser, and the fan opening plate is a galvanized plate with the thickness of 1.5 mm.

Further, the first liquid storage tank or the second liquid storage tank is identical in structure, the liquid inlet and the liquid outlet are arranged on the upper portions of the first liquid storage tank or the second liquid storage tank, the vertical eduction tube is arranged in the center of the liquid storage tank and communicated with the liquid outlet, a gap is formed between the lower end of the eduction tube and the bottom of the liquid storage tank, an annular inner cavity is formed between the outer wall of the eduction tube and the inner wall of the liquid storage tank, and a drying agent is arranged in the middle of the inner cavity.

The utility model has the beneficial effects that: the internal configuration and the composition structure of the refrigerator are optimized, the primary condenser and the fin type condenser are adopted to assist in cooling, so that the working condition of-60 ℃ can be achieved by matching the primary condenser and the fin type condenser with glycol cooling liquid, the refrigeration effect is optimized, and the use efficiency is improved. And as the structural optimization of the fin type condenser and the liquid storage tank, better product effect can be exerted, and the whole operation of the refrigerator system is smooth and efficient.

Drawings

FIG. 1 is a schematic view of a connection structure in accordance with the present utility model;

FIG. 2 is a schematic view of a fin-type condenser according to the present utility model;

Fig. 3 is a schematic view of the internal structure of the liquid storage tank according to the present utility model.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, an air-cooled low-temperature refrigerator device at minus 60 ℃ mainly comprises a compression mechanism, a condenser, a thermal expansion valve 88 and an evaporator 9, wherein the compression mechanism is a first compressor 1 and a second compressor 2 respectively, the condenser is a first-stage condenser 3 and a second-stage condenser 4 respectively, the first compressor 1 is connected with the first-stage condenser 3, a refrigerant sequentially passes through the second compressor 2, the fin-type condenser 5, the second-stage condenser 4, the thermal expansion valve 88 and the evaporator 9 after passing through the first-stage condenser 3, return air of the evaporator 9 enters the first compressor 1, and an output end of the evaporator 9 is supplied to the device through a liquid pump 90. Under the connection structure, the glycol cooling liquid is adopted to pass through the first compressor 1 and the second compressor 2 for secondary compression, and the repeated cooling is combined, so that the temperature can be further reduced, and the working condition of minus 60 ℃ is achieved.

The heat exchange is performed between the first-stage condenser 3 and the second-stage condenser 4, that is, the first-stage condenser 3 assists the second-stage condenser 4 in cooling, so that the refrigerating efficiency of the second-stage condenser 4 is better, and the second-stage condenser 4 is finally output to the equipment to be cooled.

The output end of the secondary condenser 4 is provided with a tee joint which is respectively connected with a thermal expansion valve 88 and a pressure regulating valve, and the output of the pressure regulating valve flows back to the first compressor 1 after passing through the expansion tank 11. I.e. the pressure of the cold liquid passing through the secondary condenser 4 is high, the cold liquid can be reduced by a pressure regulating valve and reduced to gas with the aid of an expansion tank 11, and the gas enters the first compressor 1 to re-enter the cycle.

A first liquid tank 61 and a first dry filter 71 are arranged between the fin type condenser 5 and the secondary condenser 4, and a second liquid tank 62 and a second dry filter 72 are arranged between the secondary condenser 4 and the thermal expansion valve 88. The high-temperature high-pressure refrigerant can be transferred and stored through the liquid storage tank after forming cooling liquid through the fin type condenser 5.

Specifically, the first liquid storage tank 61 and the second liquid storage tank 62 have the same structure, the upper parts of the two liquid storage tanks are provided with a liquid inlet 63 and a liquid outlet 64, the center of the liquid storage tank is provided with an eduction tube 65 which is vertically arranged and communicated with the liquid outlet 64, the lower end of the eduction tube 65 is provided with a gap with the bottom of the liquid storage tank, an annular inner cavity 66 is formed between the outer wall of the eduction tube 65 and the inner wall of the liquid storage tank, the middle part of the inner cavity 66 is provided with a drying agent 60, and a filter screen 68 is covered above and below the drying agent 60. The liquid storage tank can be internally provided with a drying agent, or can be externally provided with a drying agent such as a first drying filter 71 and a second drying filter 72, so that moisture and impurities in the cooling liquid can be removed in the cooling liquid flowing process, and the cooling effect of the cooling liquid is better.

Preferably, the two sides of the fin type condenser 5 are respectively provided with 4 rows of pipelines, the fins on the fin type condenser 5 are made of optical foil, the specific implementation specification is that the number of the fins is 4 rows of 22 holes is multiplied by 920mm, the spacing between the straight sheets of the fins is 2.0mm, the periphery of the fin type condenser 5 is provided with galvanized plates with the thickness of 1.2mm, and the fan opening plate is provided with galvanized plates with the thickness of 1.5 mm, so that the heat dissipation effect is better.

While the utility model has been described in detail in connection with specific preferred embodiments, the technical scope of the utility model is not limited to the description, but may be modified or changed by those skilled in the art based on the description, and all such modifications and changes should be considered as falling within the scope of the appended claims.

Claims

1. An air-cooled cryogenic refrigerator device at minus 60 ℃ mainly comprising a compression mechanism, a condenser, a thermal expansion valve (88) and an evaporator (9), and is characterized in that: the compression mechanism is respectively a first compressor (1) and a second compressor (2), the condensers are respectively a first-stage condenser (3) and a second-stage condenser (4), the first compressor (1) is connected with the first-stage condenser (3), refrigerant sequentially passes through the second compressor (2), the fin type condenser (5), the second-stage condenser (4), the thermal expansion valve (88) and the evaporator (9) after passing through the first-stage condenser (3), return air of the evaporator (9) enters the first compressor (1), and heat exchange is carried out between the first-stage condenser (3) and the second-stage condenser (4).

2. An air-cooled subzero 60 ℃ cryogenic refrigerator assembly as claimed in claim 1, wherein: the output end of the secondary condenser (4) is provided with a tee joint which is respectively connected with a thermal expansion valve (88) and a pressure regulating valve, and the output of the pressure regulating valve flows back to the first compressor (1) after passing through the expansion tank (11).

3. A low temperature freezer apparatus of air cooled minus 60 ℃ as claimed in claim 1 or 2, wherein: a first liquid storage tank (61) and a first dry filter (71) are arranged between the fin type condenser (5) and the secondary condenser (4), and a second liquid storage tank (62) and a second dry filter (72) are arranged between the secondary condenser (4) and the thermal expansion valve (88).

4. An air-cooled subzero 60 ℃ cryogenic refrigerator assembly as claimed in claim 1, wherein: the output end of the evaporator (9) is supplied to the equipment through a liquid pump (90).

5. A low temperature freezer apparatus of air cooled minus 60 ℃ as claimed in claim 1 or 2, wherein: the fin type condenser (5) both sides are 4 rows of pipelines respectively, fin on fin type condenser (5) is the optical foil, the spacing of straight piece of windowing is 2.0mm, and adopt 1.2mm thick galvanized sheet around fin type condenser (5), and the fan mouth board is 1.5 thick galvanized sheet.

6. An air-cooled sub-60 ℃ cryogenic refrigerator assembly according to claim 3 or claim, wherein: the structure of the first liquid storage tank (61) is the same as that of the second liquid storage tank (62), a liquid inlet (63) and a liquid outlet (64) are arranged on the upper portions of the first liquid storage tank and the second liquid storage tank, a vertically arranged eduction tube (65) is arranged in the center of the liquid storage tank and is communicated with the liquid outlet (64), a gap is formed between the lower end of the eduction tube (65) and the bottom of the liquid storage tank, an annular inner cavity (66) is formed between the outer wall of the eduction tube (65) and the inner wall of the liquid storage tank, a drying agent (60) is arranged in the middle of the inner cavity (66), and a filter screen (68) is covered above and below the drying agent (60).