CN216769836U - Energy-saving and efficient refrigeration cascade system - Google Patents
Energy-saving and efficient refrigeration cascade system Download PDFInfo
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- CN216769836U CN216769836U CN202123111563.2U CN202123111563U CN216769836U CN 216769836 U CN216769836 U CN 216769836U CN 202123111563 U CN202123111563 U CN 202123111563U CN 216769836 U CN216769836 U CN 216769836U
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Abstract
The utility model discloses an energy-saving and high-efficiency refrigeration overlapping system, which relates to the technical field of refrigeration systems and comprises a compressor unit and an evaporator, wherein an overlapping compressor and a refrigerant storage tank are arranged on the left side of the compressor unit, a liquid storage tank is arranged on the right side of the compressor unit, an air suction port at the upper end of the compressor unit is connected with a gas-liquid separator through a pipeline, the gas-liquid separator is connected with a heat exchanger through a pipeline, an air outlet of the compressor unit is connected with a condenser through a pipeline, the lower part of the condenser is connected with the liquid storage tank through a pipeline, and the liquid storage tank is sequentially connected with the gas-liquid separator and the upper end of the left side of the compressor unit through pipelines. The cascade system uses CO2 which is natural working medium, utilizes the advantage that the heat exchange performance of the cascade system is still good under the low-temperature working condition, and avoids the defect that the pressure of the cascade system is higher under the high-temperature working condition.
Description
Technical Field
The utility model relates to the technical field of refrigeration systems, in particular to an energy-saving and high-efficiency refrigeration cascade system.
Background
For example, NH3 is used as a natural working medium with excellent performance-price ratio and the most widely used, because safety accidents caused by design or installation defects, improper operation, poor management and the like in recent years are limited by the irrational manner of "cutting" in some places for a while. To improve the safety of the NH3 refrigeration system, on one hand, the probability of human misoperation can be reduced through automation of system control, and the probability of accidents or the influence caused by accidents can also be reduced by setting some safety measures; therefore, by using the NH3 direct expansion system, the NH3/CO2 cascade, or the cold load system, the NH3 charge of the system can be reduced as much as possible, and thus, the technicians of our company have designed a refrigeration cascade system to address the above problems.
SUMMERY OF THE UTILITY MODEL
The present invention aims to provide an energy-saving and efficient refrigeration cascade system to solve the problems of the background art.
In order to achieve the purpose, the utility model provides the following technical scheme: energy-conserving and efficient refrigeration overlapping system, including compressor unit and evaporimeter, compressor unit's left side is equipped with overlapping compressor and refrigerant storage jar, compressor unit's right side is equipped with the liquid storage pot, the entrance of evaporimeter is passed through the pipeline and is connected with refrigerant storage jar, refrigerant storage jar passes through the pipeline and is connected with left heat exchanger and overlapping compressor, the entry of overlapping compressor passes through the pipe connection with the export of evaporimeter, the induction port of compressor unit's upper end has vapour and liquid separator through the pipe connection, vapour and liquid separator passes through the pipeline and is connected with the heat exchanger, compressor unit's gas outlet has the condenser through the pipe connection, the below of condenser passes through the pipeline and is connected with the liquid storage pot, the liquid storage pot passes through the pipeline and is connected with vapour and liquid separator and compressor unit's left side upper end in proper order.
Further: the upper end of liquid storage pot is equipped with liquid storage pot entry and liquid storage pot export, include vapour and liquid separator air inlet, vapour and liquid separator gas outlet, vapour and liquid separator inlet and vapour and liquid separator liquid outlet on the vapour and liquid separator, the liquid storage pot export passes through the pipe connection with vapour and liquid separator inlet to the vapour and liquid separator gas outlet passes through the pipeline and is connected with the upper left end of compressor unit, the left lower extreme of compressor unit passes through the right side entry linkage of pipeline with the heat exchanger to the export of the right side upper end of heat exchanger and vapour and liquid separator air inlet intercommunication, the vapour and liquid separator gas outlet passes through the induction port intercommunication of pipeline with the compressor unit.
Preferably: the upper end of liquid storage pot entry is equipped with the siphon jar, drier-filter is installed in the liquid storage pot exit, the left side of siphon jar is equipped with siphon jar entry and siphon jar export, siphon jar entry and siphon jar export are connected with compressor unit's right side upper and lower end respectively through the pipeline.
Preferably: the upper end of the liquid inlet of the separator is provided with a coil pipe in the gas-liquid separator.
Preferably: temperature sensors and pressure sensors are mounted at the upper ends of the refrigerant storage tank and the liquid storage tank and at the outlets of the evaporators.
Preferably: and a shielding pump is installed at the outlet of the refrigerant storage tank.
Compared with the prior art, the utility model has the beneficial effects that: the cascade system uses CO2 which is natural working medium and is not limited by environmental protection policy, CO2 is used as safe, nontoxic and non-combustible low-temperature refrigerant to enter the evaporator for heat exchange, the advantage that the heat exchange performance is still good under the low-temperature working condition is utilized, the defect that the pressure is higher under the high-temperature working condition is avoided, the advantages of the cascade system that lubricating oil is hardly contained in the evaporator, the influence on evaporation and refrigeration is extremely small, the heat exchange efficiency is high, and the compressor unit is controlled by frequency conversion, is energy-saving and efficient.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic view of a fluid reservoir;
FIG. 3 is a schematic view of a gas-liquid separator.
In the figure: 1. the compressor unit comprises a compressor unit, 2, a cascade compressor, 3, a refrigerant storage tank, 4, a liquid storage tank, 5, a siphon tank, 6, a condenser, 7, a gas-liquid separator, 8, a heat exchanger, 9, an evaporator, 10, a drying filter, 41, a liquid storage tank inlet, 42, a liquid storage tank outlet, 51, a siphon tank inlet, 52, a siphon tank outlet, 71, a gas-liquid separator air inlet, 72, a gas-liquid separator air outlet, 73, a gas-liquid separator liquid inlet, 74, a gas-liquid separator liquid outlet, 75 and a coil pipe.
Detailed Description
The present invention will be described below based on embodiments with reference to the attached drawings in the embodiments of the present invention, but it should be noted that the present invention is not limited to the embodiments, and some specific details are described in detail in the following detailed description of the present invention, however, those skilled in the art can fully understand the present invention for the portions not described in detail.
Furthermore, those skilled in the art will appreciate that the drawings are provided solely for the purposes of illustrating the utility model, features and advantages thereof, and are not necessarily drawn to scale.
Also, unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, the meaning of "includes but is not limited to".
Referring to fig. 1-3, the present invention provides a technical solution: including compressor unit 1 and evaporimeter 9, its characterized in that: the left side of compressor unit 1 is equipped with overlapping compressor 2 and refrigerant storage jar 3, the right side of compressor unit 1 is equipped with liquid storage pot 4, the entrance of evaporimeter 9 passes through the pipeline and is connected with refrigerant storage jar 3, refrigerant storage jar 3 passes through the pipeline and is connected with left heat exchanger 8 and overlapping compressor 2, the entry of overlapping compressor 2 passes through the pipe connection with the export of evaporimeter 9, the induction port of the upper end of compressor unit 1 has vapour and liquid separator 7 through the pipe connection, vapour and liquid separator 7 is connected with heat exchanger 8 through the pipeline, there is condenser 6 in the gas outlet of compressor unit 1 through the pipe connection, the below of condenser 6 is connected with liquid storage pot 4 through the pipeline, liquid storage pot 4 passes through the pipeline and is connected with vapour and liquid separator 7 and the left side upper end of compressor unit 1 in proper order.
The upper end of liquid storage pot 4 is equipped with liquid storage pot entry 41 and liquid storage pot export 42, include vapour and liquid separator air inlet 71, vapour and liquid separator gas outlet 72, vapour and liquid separator inlet 73 and vapour and liquid separator liquid outlet 74 on the vapour and liquid separator 7, liquid storage pot export 42 passes through the pipe connection with vapour and liquid separator inlet 73 to vapour and liquid separator gas outlet 72 passes through the pipeline and is connected with the upper left end of compressor unit 1, the left lower extreme of compressor unit 1 passes through the right side entry linkage of pipeline with heat exchanger 8 to the right side upper end export and the vapour and liquid separator air inlet 71 intercommunication of heat exchanger 8, vapour and liquid separator gas outlet 72 passes through the induction port intercommunication of pipeline with compressor unit 1.
The upper end of liquid storage pot inlet 41 is equipped with siphon tank 5, liquid storage pot outlet 42 department installs drier-filter, siphon tank 5's left side is equipped with siphon tank inlet 51 and siphon tank outlet 52, siphon tank inlet 51 and siphon tank outlet 52 pass through the pipeline respectively with compressor unit 1's right side lower extreme be connected.
The upper end of the separator liquid inlet 73 is provided with a coil 75 inside the gas-liquid separator 7.
Temperature sensors and pressure sensors are arranged at the upper ends of the refrigerant storage tank 3 and the liquid storage tank 4 and at the outlet of the evaporator 9.
A canned motor pump is installed at the outlet of the refrigerant storage tank 3.
When the utility model is used, firstly, the working outlet of the compressor unit 1 enters the heat exchanger 8 through a pipeline to refrigerate a CO2 system on the left side, the cascade compressor 2 further compresses a refrigerant, reduces the temperature, and enters the evaporator 9 to refrigerate and work, the left side is an independent refrigerating unit, the upper end of the compressor unit 1 is provided with the gas-liquid separator 7, the air suction port of the compressor unit 1 is connected through the gas-liquid separator 7 through a pipeline to separate the gas and the liquid of the refrigerant after heat exchange, the refrigerant in the liquid storage tank 4 is subcooled and returned to the left side of the compressor unit 1 through the coil pipe 75 in the separation process, the siphon tank 5 is used for exchanging heat of an oil plate heat exchanger in the compressor unit 1, the inlet 51 of the siphon tank is a gas inlet, the outlet 52 of the siphon tank is a liquid outlet, and the condenser 6 is used for condensing the gas-liquid mixture of the outlet at the upper right end of the compressor unit 1, the refrigerant supercooling refrigerant compressor is mainly used for supercooling the refrigerant in the compressor unit 1 by matching with the coil 75, so that energy is saved, and the compression ratio is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. Energy-conserving and efficient refrigeration overlapping system, including compressor unit (1) and evaporimeter (9), its characterized in that: the left side of the compressor unit (1) is provided with a cascade compressor (2) and a refrigerant storage tank (3), the right side of the compressor unit (1) is provided with a liquid storage tank (4), the inlet of an evaporator (9) is connected with the refrigerant storage tank (3) through a pipeline, the refrigerant storage tank (3) is connected with a left heat exchanger (8) and the cascade compressor (2) through a pipeline, the inlet of the cascade compressor (2) is connected with the outlet of the evaporator (9) through a pipeline, the air suction port at the upper end of the compressor unit (1) is connected with a gas-liquid separator (7) through a pipeline, the gas-liquid separator (7) is connected with the heat exchanger (8) through a pipeline, the gas outlet of the compressor unit (1) is connected with a condenser (6) through a pipeline, the lower part of the condenser (6) is connected with the liquid storage tank (4) through a pipeline, the liquid storage tank (4) is sequentially connected with the gas-liquid separator (7) and the upper end of the left side of the compressor unit (1) through pipelines.
2. An energy efficient and efficient refrigerant cascade system as recited in claim 1 wherein: the upper end of liquid storage pot (4) is equipped with liquid storage pot entry (41) and liquid storage pot export (42), include vapour and liquid separator air inlet (71), vapour and liquid separator gas outlet (72), vapour and liquid separator inlet (73) and vapour and liquid separator liquid outlet (74) on vapour and liquid separator (7), liquid storage pot export (42) and vapour and liquid separator liquid inlet (73) pass through the pipe connection to vapour and liquid separator gas outlet (72) are connected through the upper left end of pipeline with compressor unit (1), the right side entry linkage of pipeline and heat exchanger (8) is passed through to the left lower extreme of compressor unit (1) to the right side upper end export and vapour and liquid separator air inlet (71) intercommunication of heat exchanger (8), vapour and liquid separator gas outlet (72) are through the induction port intercommunication of pipeline with compressor unit (1).
3. An energy efficient and efficient refrigerant cascade system as recited in claim 2 wherein: the upper end of liquid storage pot entry (41) is equipped with siphon tank (5), liquid storage pot export (42) department installs drier-filter, the left side of siphon tank (5) is equipped with siphon tank entry (51) and siphon tank export (52), siphon tank entry (51) and siphon tank export (52) are connected with the lower extreme on the right side of compressor unit (1) respectively through the pipeline.
4. An energy efficient and efficient refrigerant cascade system as recited in claim 2 wherein: the upper end of the separator liquid inlet (73) is provided with a coil pipe (75) in the gas-liquid separator (7).
5. An energy efficient and efficient refrigerant cascade system as recited in claim 1 wherein: temperature sensors and pressure sensors are mounted at the upper ends of the refrigerant storage tank (3) and the liquid storage tank (4) and at the outlets of the evaporators (9).
6. An energy efficient and efficient refrigerant cascade system as recited in claim 1 wherein: and a shielding pump is installed at the outlet of the refrigerant storage tank (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123111563.2U CN216769836U (en) | 2021-12-13 | 2021-12-13 | Energy-saving and efficient refrigeration cascade system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123111563.2U CN216769836U (en) | 2021-12-13 | 2021-12-13 | Energy-saving and efficient refrigeration cascade system |
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| Publication Number | Publication Date |
|---|---|
| CN216769836U true CN216769836U (en) | 2022-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123111563.2U Active CN216769836U (en) | 2021-12-13 | 2021-12-13 | Energy-saving and efficient refrigeration cascade system |
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| CN (1) | CN216769836U (en) |
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2021
- 2021-12-13 CN CN202123111563.2U patent/CN216769836U/en active Active
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