A free switch multi-mode refrigeration device

Abstract

The utility model discloses a kind of free switching multi-mode refrigeration devices, it is related to refrigeration device field, including high-temperature warehouse and low-temperature warehouse, the side of high-temperature warehouse and low-temperature warehouse is provided with gas-liquid separator, and the side of gas-liquid separator is provided with first compressor and second compressor, the side of first compressor is provided with first valve, and the other side of first compressor is provided with second valve.The utility model first compressor and second compressor can operate simultaneously;Single set system refrigeration capacity is equal to the sum of high-temperature warehouse required cooling capacity and low-temperature warehouse required cooling capacity 60%, save investment;Two refrigeration systems are completely independent, refrigerant operation process is compressor→oil separator→marine condensing liquid reservoir→dry filter→high-temperature or low-temperature warehouse→gas-liquid separator→compressor, complete a refrigeration cycle;Without closing any valve, directly starting the second compressor of No.2 system, the first compressor of No.1 refrigeration system can be normal operation by closing.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration devices, specifically a freely switchable multi-mode refrigeration device. Background Technology

[0002] With economic and social development, refrigeration systems are increasingly widely used in the national economy. In order to ensure the reliability, convenience and energy saving of refrigeration systems, industrial refrigeration or food refrigeration and freezing fields use dual or multi-system refrigeration. The places that need to be cooled (refrigeration load) are often two or more. Dual or multi-system refrigeration devices usually have one refrigeration system in use and one on standby. The places that need to be cooled (refrigeration load) are often two or more. Under normal operation, one refrigeration system is used for two or more refrigeration loads. When one refrigeration system fails, it switches to another refrigeration system.

[0003] Existing refrigeration systems have the following main shortcomings: To ensure cooling performance, in dual- or multi-system refrigeration units, since one system supplies cooling to two or more cooling loads, the cooling capacity of each system is equal to the sum of all cooling loads. Initially, a large cooling capacity is desired, but the cooling capacity of a single refrigeration system is fixed. Furthermore, due to system design flaws, two systems cannot operate simultaneously. When the system reaches maintenance operation, the cooling capacity requirement is very small, making the refrigeration capacity seem excessive. Because there are two or more refrigeration systems, the system is more complex. All refrigeration components, such as gas-liquid separators, dryer filters, and sight glasses, are completely redundant, resulting in higher system costs. When one refrigeration system fails and a backup system needs to be switched, many valves need to be closed or opened, making the operation procedure complex. Even experienced professionals may not be able to perform the system switchover successfully. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a freely switchable multi-mode refrigeration device to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a freely switchable multi-mode refrigeration device, comprising a high-temperature storage chamber and a low-temperature storage chamber. A gas-liquid separator is provided on one side of the high-temperature storage chamber and the low-temperature storage chamber. A first compressor and a second compressor are provided on one side of the gas-liquid separator. A first valve is provided on one side of the first compressor, and a second valve is provided on the other side of the first compressor. A first oil separator is provided on one side of the first valve. A first marine condensate receiver and a second marine condensate receiver are provided on one side of the second oil separator. A third valve is provided on one side of the first marine condensate receiver, and a sixth valve is provided on one side of the second marine condensate receiver. A receiver and a drying filter are provided on one side of the sixth valve. An inlet and an outlet are provided on one side of the first marine condensate receiver.

[0006] By adopting the above technical solution, the first compressor and the second compressor can operate simultaneously; the cooling capacity of a single system is equal to 60% of the sum of the cooling requirements of the high-temperature storage and the low-temperature storage, saving investment; the two refrigeration systems are completely independent, and the refrigerant operation process is compressor → oil separator → marine condensate receiver → dryer filter → high-temperature or low-temperature storage → gas-liquid separator → compressor, completing one refrigeration cycle; when the first refrigeration system is running and it is necessary to switch to the second refrigeration system, there is no need to close any valves, just start the second compressor of the second system and shut down the first compressor of the first refrigeration system for normal operation.

[0007] The present invention is further configured such that the temperature inside the high-temperature chamber is -1 to 0°C.

[0008] The present invention is further configured such that the temperature inside the low-temperature chamber is -15 to -18°C.

[0009] The present invention is further configured such that both the inlet and outlet of the first compressor and the second compressor are equipped with one-way valves.

[0010] Preferably, the one-way valve ensures that the refrigerant can only flow in one direction.

[0011] The present invention is further configured such that the liquid inlet and liquid outlet are connected to the first marine condensate storage tank, the second marine condensate storage tank, the first compressor, the second compressor, the gas-liquid separator, the high-temperature storage tank and the low-temperature storage tank via connecting pipes, and a sight glass is provided on the connecting pipe.

[0012] Preferably, only one sight glass or other accessories are needed, which saves materials, simplifies the system, and improves the reliability of the device operation.

[0013] In summary, the present invention has the following main advantages:

[0014] This invention features a high-temperature storage chamber, a low-temperature storage chamber, a first marine condensate receiver, a second marine condensate receiver, a first compressor, and a second compressor. The first and second compressors can operate simultaneously. The cooling capacity of a single system is equal to 60% of the sum of the cooling requirements of the high-temperature and low-temperature storage chambers, saving investment. The two refrigeration systems are completely independent, with the refrigerant flow being compressor → oil separator → marine condensate receiver → dryer filter → high-temperature or low-temperature storage chamber → gas-liquid separator → compressor, completing one refrigeration cycle. When the first refrigeration system is running and it is necessary to switch to the second refrigeration system, no valves need to be closed; simply start the second compressor of the second system and shut down the first compressor of the first system for normal operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Explanation of reference numerals in the attached figures:

[0017] 1. High-temperature storage; 2. Low-temperature storage; 3. First marine condensate receiver; 4. Second marine condensate receiver; 5. First compressor; 6. Second compressor; 7. Gas-liquid separator; 8. First oil separator; 9. Receiver; 10. Dryer filter; 11. First valve; 12. Second valve; 13. Third valve; 14. Fourth valve; 15. Fifth valve; 16. Sixth valve; 17. Second oil separator; 18. Liquid inlet; 19. Liquid outlet. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] The embodiments of this utility model will be described below based on its overall structure.

[0020] Please see Figure 1The system includes a high-temperature storage chamber 1 and a low-temperature storage chamber 2. A gas-liquid separator 7 is installed on one side of both chambers. A first compressor 5 and a second compressor 6 are installed on one side of the gas-liquid separator 7. A first valve 11 is installed on one side of the first compressor 5, and a second valve 12 is installed on the other side. A first oil separator 8 is installed on one side of the first valve 11. A fourth valve 14 is installed on one side of the second compressor 6, and a fifth valve 15 is installed on the other side. A second oil separator 17 is installed on one side of the second compressor 6, next to the fourth valve 14. A first marine condensate receiver 3 and a second marine condensate receiver 4 are installed on one side of the second oil separator 17. A third valve 13 is provided on one side of a marine condensate receiver 3, a sixth valve 16 is provided on one side of a second marine condensate receiver 4, a receiver 9 and a dryer filter 10 are provided on one side of the sixth valve 16, and an inlet 18 and an outlet 19 are provided on one side of the first marine condensate receiver 3. The first refrigeration system consists of a first compressor 5 → a first oil separator 8 → a first marine condensate receiver 3 → a dryer filter 10 → a high-temperature storage 1 or a low-temperature storage 2 → a gas-liquid separator 7 → a first compressor 5. The second refrigeration system consists of a second compressor 6 → a second oil separator 17 → a second marine condensate receiver 4 → a dryer filter 10 → a high-temperature storage 1 or a low-temperature storage 2 → a gas-liquid separator 7 → a second compressor 6.

[0021] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 The temperature inside the high-temperature warehouse 1 is between -1 and 0℃.

[0022] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 The temperature inside the low-temperature storage room 2 is -15 to -18℃.

[0023] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 The inlet and outlet of the first compressor 5 and the second compressor 6 are both equipped with one-way valves, which ensure that the refrigerant can only flow in one direction.

[0024] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 The inlet 18 and outlet 19 are connected to the first marine condensate storage tank 3, the second marine condensate storage tank 4, the first compressor 5, the second compressor 6, the gas-liquid separator 7, the high-temperature storage tank 1, and the low-temperature storage tank 2 via connecting pipes. The connecting pipes are equipped with sight glasses. Only one sight glass and other accessories are needed, which saves materials, simplifies the system, and improves the reliability of the device operation.

[0025] In practical operation, the refrigerant flow of this invention is as follows: compressor → oil separator → marine condensate receiver → dryer filter → high temperature or low temperature storage → gas-liquid separator → compressor, completing one refrigeration cycle. When the No. 1 refrigeration system is running and it is necessary to switch to the No. 2 refrigeration system, there is no need to close any valves. Simply start the second compressor 6 of the No. 2 system and shut down the first compressor 5 of the No. 1 refrigeration system for normal operation.

[0026] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A freely switchable multi-mode refrigeration device, comprising a high-temperature chamber (1) and a low-temperature chamber (2), characterized in that: A gas-liquid separator (7) is provided on one side of the high-temperature storage (1) and the low-temperature storage (2), and a first compressor (5) and a second compressor (6) are provided on one side of the gas-liquid separator (7). A first valve (11) is provided on one side of the first compressor (5), and a second valve (12) is provided on the other side of the first compressor (5). A first oil separator (8) is provided on one side of the first valve (11). A fourth valve (14) is provided on one side of the second compressor (6), and a fifth valve (15) is provided on the other side of the second compressor (6). A second oil separator (17) is provided on one side of the fourth valve (14). A first marine condensate reservoir (3) and a second marine condensate reservoir (4) are provided on one side of the second oil separator (17). A third valve (13) is provided on one side of the first marine condensate reservoir (3). A sixth valve (16) is provided on one side of the second marine condensate reservoir (4). A reservoir (9) and a dryer filter (10) are provided on one side of the sixth valve (16). An inlet (18) and an outlet (19) are provided on one side of the first marine condensate reservoir (3).

2. The freely switchable multi-mode refrigeration device according to claim 1, characterized in that: The temperature inside the high-temperature chamber (1) is -1 to 0℃.

3. The freely switchable multi-mode refrigeration device according to claim 1, characterized in that: The temperature inside the low-temperature storage chamber (2) is -15 to -18°C.

4. The freely switchable multi-mode refrigeration device according to claim 1, characterized in that: One-way valves are provided at the inlet and outlet of the first compressor (5) and the second compressor (6).

5. The freely switchable multi-mode refrigeration device according to claim 1, characterized in that: The inlet (18) and outlet (19) are connected to the first marine condensate storage tank (3), the second marine condensate storage tank (4), the first compressor (5), the second compressor (6), the gas-liquid separator (7), the high-temperature storage tank (1), and the low-temperature storage tank (2) via connecting pipes. A sight glass is provided on the connecting pipe.

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