CN215892822U - Intermediate refrigerant supercooling type carbon dioxide air conditioning system - Google Patents
Intermediate refrigerant supercooling type carbon dioxide air conditioning system Download PDFInfo
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- CN215892822U CN215892822U CN202121579989.8U CN202121579989U CN215892822U CN 215892822 U CN215892822 U CN 215892822U CN 202121579989 U CN202121579989 U CN 202121579989U CN 215892822 U CN215892822 U CN 215892822U
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Abstract
The utility model relates to the technical field of air conditioning systems, and discloses an intermediate refrigerant supercooling type carbon dioxide air conditioning system, which comprises: the system comprises a carbon dioxide compressor, an oil separator, an indoor unit, a primary electronic expansion valve, a heat regenerator, a gas-liquid separator, a liquid storage tank, a secondary electronic expansion valve, an outdoor unit and a supercooling system; the supercooling system is connected into the heating circulation loop and the refrigerating circulation loop and used for cooling the carbon dioxide refrigerant flowing into the first heat return channel of the heat regenerator from the indoor unit and the outdoor unit. The utility model solves the problems that the carbon dioxide air conditioning system is poor in refrigeration and heating effects and high in energy consumption because the cooling degree of a carbon dioxide refrigerant is low in the conventional carbon dioxide air conditioning system.
Description
Technical Field
The utility model relates to the technical field of air-conditioning systems, in particular to an intermediate refrigerant supercooling type carbon dioxide air-conditioning system.
Background
The carbon dioxide air-conditioning system adopts carbon dioxide as a refrigerant, and the carbon dioxide working medium is a rare natural refrigerant, is non-toxic and non-flammable, is cheap and easy to obtain, does not damage the natural environment, and has great advantages in the aspect of being used as the refrigerant. The carbon dioxide air conditioner using natural working medium carbon dioxide as a refrigerant has excellent environmental protection property while ensuring higher COP of the system, can effectively control the damage of an ozone layer, reduces the generation of greenhouse gas, inhibits the combustion of coal, reduces the incidence rate of haze weather and PM2.5 concentration, organically combines energy conservation and environmental protection together, and has wide market and potential in China.
However, in the existing carbon dioxide air conditioning system, because the cooling degree of the carbon dioxide refrigerant is low, the carbon dioxide air conditioning system often has the problems of poor refrigeration and heating effects and high energy consumption.
SUMMERY OF THE UTILITY MODEL
Based on the technical problems, the utility model provides an intermediate refrigerant supercooling type carbon dioxide air conditioning system, which solves the problems that the carbon dioxide air conditioning system is poor in refrigerating and heating effects and high in energy consumption due to the fact that the cooling degree of a carbon dioxide refrigerant in the conventional carbon dioxide air conditioning system is low.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:
the supercooling type carbon dioxide air conditioning system of the intermediate refrigerant comprises: the system comprises a carbon dioxide compressor, an oil separator, an indoor unit, a primary electronic expansion valve, a heat regenerator, a gas-liquid separator, a liquid storage tank, a secondary electronic expansion valve, an outdoor unit and a supercooling system; an exhaust port of the carbon dioxide compressor is sequentially connected with the oil separator, the indoor unit, the primary electronic expansion valve, the first heat return runner of the heat regenerator, the liquid storage tank, the secondary electronic expansion valve, the outdoor unit, the second heat return runner of the heat regenerator and the gas-liquid separator through pipelines and then returns to an air suction port of the carbon dioxide compressor to form a heating circulation loop; an exhaust port of the carbon dioxide compressor is sequentially connected with the oil separator, the outdoor unit, the primary electronic expansion valve, the first heat return runner of the heat regenerator, the liquid storage tank, the secondary electronic expansion valve, the indoor unit, the second heat return runner of the heat regenerator and the gas-liquid separator through pipelines and then returns to an air suction port of the carbon dioxide compressor to form a refrigeration cycle loop; the supercooling system is connected into the heating circulation loop and the refrigerating circulation loop and used for cooling the carbon dioxide refrigerant flowing into the first heat return channel of the heat regenerator from the indoor unit and the outdoor unit.
Furthermore, the supercooling system comprises a supercooling compressor, a supercooling electronic expansion valve, an intermediate supercooling heat exchanger, a supercooling liquid storage tank and a supercooling gas-liquid separator, wherein one end of a first heat exchange flow channel of the intermediate supercooling heat exchanger is respectively connected with the indoor unit and the outdoor unit, and the other end of the first heat exchange flow channel of the intermediate supercooling heat exchanger is connected with a first heat return channel of the heat regenerator; an exhaust port of the supercooling compressor is sequentially connected with the indoor unit, the supercooling liquid storage tank, the supercooling electronic expansion valve, a second heat exchange flow channel of the intermediate supercooling heat exchanger and the supercooling gas inlet of the supercooling compressor through pipelines, and then the exhaust port returns to the heating supercooling loop; an exhaust port of the supercooling compressor is sequentially connected with the outdoor unit, the supercooling liquid storage tank, the supercooling electronic expansion valve, a second heat exchange flow channel of the intermediate supercooling heat exchanger and the supercooling gas-liquid separator through pipelines and then returns to a gas suction port of the supercooling compressor to form a refrigeration supercooling loop.
Furthermore, a control device and a frequency converter are arranged on the supercooling compressor.
Further, a filter is arranged at the liquid outlet end of the supercooling liquid storage tank.
Furthermore, a high-pressure safety device is arranged at the exhaust port end of the supercooling compressor, and a low-pressure safety device is arranged at the inlet end of the supercooling gas-liquid separator.
Furthermore, a liquid viewing mirror is arranged at the liquid outlet end of the supercooling liquid storage tank.
Furthermore, a high-pressure safety device is arranged at the exhaust port end of the carbon dioxide compressor, and a low-pressure safety device is arranged at the inlet end of the gas-liquid separator.
Furthermore, the outlet end of the gas-liquid separator and the liquid outlet end of the liquid storage tank are both provided with filters.
Compared with the prior art, the utility model has the beneficial effects that:
by arranging the supercooling system, the supercooling system can cool the carbon dioxide refrigerant flowing into the heat regenerator from the indoor unit and the outdoor unit in the refrigeration or heating process of the carbon dioxide air conditioning system so as to improve the cooling degree of the carbon dioxide refrigerant. The problem of among the current carbon dioxide air conditioning system because the carbon dioxide refrigerant cooling degree is lower, often can lead to carbon dioxide air conditioning system to appear refrigeration, heating effect poor, energy resource consumption is big is solved.
Drawings
The present application will be further explained by way of exemplary embodiments, which will be described in detail by way of the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of an intermediate refrigerant supercooling type carbon dioxide air conditioning system.
The system comprises a carbon dioxide compressor 1, a four-way valve 2, an indoor unit 3, an outdoor unit 4, an oil separator 5, a gas-liquid separator 6, a heat regenerator 7, a liquid storage tank 8, a secondary electronic expansion valve 9, a one-way valve 10, an electromagnetic valve 11, a filter 12, a high-pressure safety device 13, a low-pressure safety device 14, a supercooling compressor 15, a supercooling cold gas-liquid separator 16, a primary electronic expansion valve 17, an intermediate supercooling heat exchanger 18, a supercooling electronic expansion valve 19, a liquid viewing mirror 20, a supercooling liquid storage tank 21, a control device 22, a frequency converter 23 and an electromagnetic valve 24.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Fig. 1 is a schematic structural diagram of an intercooling carbon dioxide air conditioning system according to some embodiments of the present application, and the intercooling carbon dioxide air conditioning system according to the present application will be described below with reference to the drawings. It should be noted that the figures are only examples, and the specific shape and structure of the intercooling carbon dioxide air conditioning system are not limited.
Referring to fig. 1, in some embodiments, an intercooling carbon dioxide air conditioning system includes: the system comprises a carbon dioxide compressor 1, an oil separator 5, an indoor unit 3, a primary electronic expansion valve 17, a heat regenerator 7, a gas-liquid separator 6, a liquid storage tank 8, a secondary electronic expansion valve 9, an outdoor unit 4 and a supercooling system; an exhaust port of the carbon dioxide compressor 1 is sequentially connected with the oil separator 5, the indoor unit 3, the primary electronic expansion valve 17, the first heat return runner of the heat regenerator 7, the liquid storage tank 8, the secondary electronic expansion valve 9, the outdoor unit 4, the second heat return runner of the heat regenerator 7 and the gas-liquid separator 6 through pipelines and then returns to an air suction port of the carbon dioxide compressor 1 to form a heating circulation loop; an exhaust port of the carbon dioxide compressor 1 is sequentially connected with the oil separator 5, the outdoor unit 4, the primary electronic expansion valve 17, the first heat return runner of the heat regenerator 7, the liquid storage tank 8, the secondary electronic expansion valve 9, the indoor unit 3, the second heat return runner of the heat regenerator 7 and the gas-liquid separator 6 through pipelines and then returns to an air suction port of the carbon dioxide compressor 1 to form a refrigeration cycle loop; one end of the supercooling system is respectively connected with the indoor unit 3 and the outdoor unit 4, and the other end of the supercooling system is connected with a first heat return channel of the heat regenerator 7; the supercooling system is used for cooling the carbon dioxide refrigerant flowing into the heat regenerator 7 from the indoor unit 3 and the outdoor unit 4.
Preferably, the exhaust port end of the carbon dioxide compressor 1 is provided with a high pressure safety device 13, and the inlet end of the gas-liquid separator 6 is provided with a low pressure safety device 14. The high-pressure safety device 13 is used for monitoring the pressure of the exhaust port end of the carbon dioxide compressor 1, and the low-pressure safety device 14 is used for monitoring the pressure of the inlet end of the gas-liquid separator 6, so that the running safety of the carbon dioxide air conditioning system is ensured.
Preferably, the outlet end of the gas-liquid separator 6 and the liquid outlet end of the liquid storage tank 8 are both provided with a filter 12. The filter 12 can filter the gaseous carbon dioxide refrigerant discharged from the gas-liquid separator 6, so as to prevent the gaseous carbon dioxide refrigerant entering the carbon dioxide compressor 1 from containing impurities and influencing the operation of the carbon dioxide compressor 1. The filter 12 can also filter the liquid refrigerant flowing out of the liquid storage tank 8, so as to prevent impurities contained in the liquid refrigerant from blocking the outdoor unit 4 or the indoor unit 3.
As can be seen from the structure of fig. 1 with the heating cycle circuit and the refrigeration cycle circuit, there is an overlapping portion between the heating cycle circuit and the refrigeration cycle circuit, for example: a primary electronic expansion valve 17, a first heat return runner of the heat regenerator 7 and part of pipelines of the liquid storage tank 8; the second regenerative runner of the regenerator 7, the gas-liquid separator 6, the carbon dioxide compressor 1 and the oil separator 5 are partially pipelines.
Therefore, in order to reduce the cost of laying the pipelines, the overlapped part of the heating circulation loop and the refrigerating circulation loop can share the pipeline, and the flow direction of the carbon dioxide refrigerant is controlled by arranging a valve on the overlapped part of the pipeline and the separated part of the pipeline. For example: the pipelines of the liquid storage tank 8 which are respectively connected with the indoor unit 3 and the outdoor unit 4 are provided with electromagnetic valves 24(A1 and A2) and a one-way valve 10; a four-way valve 2 is arranged at the connection of the oil separator 5, the indoor unit 3, the outdoor unit 4 and the heat regenerator 7; a check valve 10 is provided in a first heat return line through which the indoor unit 3 and the outdoor unit 4 are connected to the heat regenerator 7.
In some embodiments, the supercooling system includes a supercooling compressor 15, a supercooling electronic expansion valve 19, an intermediate supercooling heat exchanger 18, a supercooling liquid storage tank 21, and a supercooling gas-liquid separator 16, wherein one end of a first heat exchange flow channel of the intermediate supercooling heat exchanger 18 is connected to the indoor unit 3 and the outdoor unit 4, respectively, and the other end is connected to a first heat return channel of the heat regenerator 7; an exhaust port of the supercooling compressor 15 is sequentially connected with the indoor unit 3, the supercooling liquid storage tank 21, the supercooling electronic expansion valve 19, a second heat exchange flow channel of the intermediate supercooling heat exchanger 18 and the supercooling gas-liquid separator 16 through pipelines and then returns to a gas suction port of the supercooling compressor 15 to form a heating supercooling loop; an exhaust port of the supercooling compressor 15 is connected with the outdoor unit 4, the supercooling liquid storage tank 21, the supercooling electronic expansion valve 19, the second heat exchange flow channel of the intermediate supercooling heat exchanger 18 and the supercooling gas-liquid separator 16 in sequence through pipelines and then returns to a suction port of the supercooling compressor 15, so that a refrigeration supercooling loop is formed.
Preferably, the subcooling compressor 15 is provided with a control device 22 and an inverter 23. The inverter 23 can adjust the supercooling compressor 15 by using the control device 22 according to the operation condition of the carbon dioxide air conditioning system, so as to achieve the effect of reducing energy consumption.
Preferably, the outlet end of the supercooling liquid storage tank 21 is provided with a filter 12. The filter 12 can filter the liquid refrigerant flowing out of the supercooling liquid storage tank 21, and impurities contained in the liquid refrigerant are prevented from blocking the intermediate supercooling heat exchanger 18.
Preferably, the discharge port end of the supercooling compressor 15 is provided with a high pressure safety device 13, and the inlet end of the supercooling gas-liquid separator 16 is provided with a low pressure safety device 14. The high pressure safety device 13 is used for monitoring the pressure at the exhaust port of the supercooling compressor 15, and the low pressure safety device 14 is used for monitoring the pressure at the inlet port of the supercooling gas-liquid separator 16, so as to ensure the safety of the operation of the supercooling system.
Preferably, the liquid outlet end of the supercooling liquid storage tank 21 is provided with a liquid viewing mirror 20. The liquid viewing mirror 20 can view the liquid carbon dioxide refrigerant in the supercooling liquid storage tank 21.
In addition, as can be seen from the structure of fig. 1, the heating subcooling circuit and the cooling subcooling circuit, there is an overlapping portion between the heating subcooling circuit and the cooling subcooling circuit, for example: a supercooling liquid storage tank 21, a supercooling electronic expansion valve 19, a second heat exchange flow channel of the intermediate supercooling heat exchanger 18, a supercooling gas-liquid separator 16 and a supercooling compressor 15.
Therefore, in order to reduce the cost of laying the pipeline, the overlapped part of the heating circulation loop and the refrigerating circulation loop can share the pipeline, and the flow direction of the overcooling refrigerant is controlled by arranging a valve on the overlapped part of the pipeline and the separated part of the pipeline. For example: the supercooling compressor 15 and the pipes connected to the indoor unit 3 and the outdoor unit 4 are provided with the electromagnetic valves 24(B1, B2, B3, B4) and the check valve 10; electromagnetic valves 24 are arranged at the positions where the indoor unit 3 and the outdoor unit 4 are connected to the supercooling liquid storage tank 21.
The heating and cooling processes of the intermediate refrigerant supercooling type carbon dioxide air conditioner in the application are explained by combining the above embodiments:
a heating process: the carbon dioxide compressor 1 applies work to compress a carbon dioxide refrigerant into high-temperature and high-pressure gas, the high-temperature and high-pressure gas enters the oil separator 5, lubricating oil taken out of the compressor is separated from the refrigerant through the oil separator 5, and the lubricating oil is supplemented back to the compressor through the oil return pipe. High-temperature and high-pressure gas enters the indoor unit 3 through the four-way valve 2 to be cooled and radiated, so that the ambient temperature is heated. The refrigerant flowing through the indoor unit 3 is cooled to be a medium-temperature and medium-pressure gas-liquid mixture, is sprayed to the intermediate supercooling heat exchanger 18 through the one-way valve 10 (the electromagnetic valve A1 is closed and the electromagnetic valve A2 is opened during heating) through the primary electronic expansion valve 17 to be cooled again, and then reaches the heat regenerator 7 to be cooled again, and the cooled refrigerant reaches the liquid storage tank 8 to be stored. Part of liquid refrigerant is filtered by the filter 12 and then enters the secondary electronic expansion valve 9, liquid spray is controlled by the electronic expansion valve to enter the outdoor unit 4 for evaporation, the evaporated refrigerant is changed into low-temperature and low-pressure gas, the low-temperature and low-pressure gas enters the heat regenerator 7 through the four-way valve 2 to cool the middle-temperature part of the refrigerant, the gas returns to the gas-liquid separator 6 after being overheated, and the separated low-temperature and low-pressure dry steam gas is filtered by the filter 12 and then returns to the air suction port of the compressor to complete the heating cycle.
The supercooling compressor 15 operates simultaneously with a main road heating system, refrigerant is compressed into high-temperature and high-pressure gas, the high-temperature and high-pressure gas enters the indoor unit 3 through the one-way valve 10 and the electromagnetic valve 24 (the electromagnetic valves B1 and B4 are opened during heating, the electromagnetic valves B2 and B3 are closed) to cool and dissipate the heat, the environment is heated in an auxiliary mode, the refrigerant flowing through the indoor unit 3 is cooled into a medium-temperature and medium-pressure gas-liquid mixture and reaches the supercooling liquid storage tank 21 through the electromagnetic valve 24, part of the liquid refrigerant is filtered through the filter 12 and then enters the intermediate supercooling heat exchanger 18 through the cold electronic expansion valve 19 to cool and cool the main road carbon dioxide refrigerant, the supercooled refrigerant returns to the cold gas-liquid separator 16 to be subjected to gas-liquid separation, and then the low-temperature gas refrigerant returns to the suction port of the supercooling compressor 15 to complete supercooling circulation.
A refrigeration process: the carbon dioxide compressor 1 applies work to compress a carbon dioxide refrigerant into high-temperature and high-pressure gas, the high-temperature and high-pressure gas enters the oil separator 5, lubricating oil taken out of the compressor is separated from the refrigerant through the oil separator 5, and the lubricating oil is supplemented back to the compressor through the oil return pipe. High-temperature and high-pressure gas is reversed by the four-way valve 2 and enters the outdoor unit 4 to be cooled and radiated. The refrigerant passing through the outdoor unit 4 is cooled to a medium-temperature and medium-pressure gas-liquid mixture, the mixture is sprayed to the intermediate supercooling heat exchanger 18 through the one-way valve 10 (the electromagnetic valve A2 is closed and the electromagnetic valve A1 is opened during refrigeration) through the primary electronic expansion valve 17 to be cooled again, and then the cooled refrigerant reaches the liquid storage tank 8 to be stored. Part of the liquid refrigerant is filtered by the filter 12 and then enters the secondary electronic expansion valve 9, the liquid injection is controlled by the electronic expansion valve to enter the indoor unit 3 for evaporation, and the ambient temperature is reduced by the heat absorbed by evaporation. The evaporated refrigerant is changed into low-temperature low-pressure gas, the low-temperature low-pressure gas is reversed by the four-way valve 2 and enters the heat regenerator 7 to cool the medium-temperature part of the refrigerant, the medium-temperature part of the refrigerant returns to the gas-liquid separator 6 after being cooled, and the separated low-temperature low-pressure gas returns to the suction port of the compressor after being filtered by the filter 12 to complete the refrigeration cycle.
The supercooling compressor 15 operates simultaneously with the main circuit refrigeration system, refrigerant is compressed into high-temperature and high-pressure gas, the high-temperature and high-pressure gas passes through the one-way valve 10, the electromagnetic valves 24 (the electromagnetic valves B1 and B4 are closed during refrigeration, the electromagnetic valves B2 and B3 are opened) to enter the outdoor unit 4 for cooling and radiating, the refrigerant flowing through the outdoor unit 4 is cooled into a medium-temperature and medium-pressure gas-liquid mixture, the medium reaches the supercooling liquid storage tank 21 through the electromagnetic valve 24 for liquid storage, part of liquid refrigerant is filtered by the filter 12 and then enters the intermediate supercooling heat exchanger 18 for cooling the main circuit carbon dioxide refrigerant through the cold electronic expansion valve 19, the supercooled refrigerant returns to the gas-liquid separator 6 of the supercooling system for gas-liquid separation, and then the low-temperature gas refrigerant returns to the air suction port of the supercooling compressor 15 to complete supercooling circulation.
The above is an embodiment of the present invention. The embodiments and specific parameters in the embodiments are only used for clearly illustrating the verification process of the utility model and are not used for limiting the patent protection scope of the utility model, which is defined by the claims, and all the equivalent structural changes made by using the contents of the description and the drawings of the utility model should be included in the protection scope of the utility model.
Claims (8)
1. Intermediate refrigerant supercooling type carbon dioxide air conditioning system, which is characterized by comprising: the system comprises a carbon dioxide compressor, an oil separator, an indoor unit, a primary electronic expansion valve, a heat regenerator, a gas-liquid separator, a liquid storage tank, a secondary electronic expansion valve, an outdoor unit and a supercooling system;
an exhaust port of the carbon dioxide compressor is sequentially connected with the oil separator, the indoor unit, the primary electronic expansion valve, the first heat return runner of the heat regenerator, the liquid storage tank, the secondary electronic expansion valve, the outdoor unit, the second heat return runner of the heat regenerator and the gas-liquid separator through pipelines and then returns to an air suction port of the carbon dioxide compressor to form a heating circulation loop;
an exhaust port of the carbon dioxide compressor is sequentially connected with the oil separator, the outdoor unit, the primary electronic expansion valve, the first heat return runner of the heat regenerator, the liquid storage tank, the secondary electronic expansion valve, the indoor unit, the second heat return runner of the heat regenerator and the gas-liquid separator through pipelines and then returns to an air suction port of the carbon dioxide compressor to form a refrigeration cycle loop;
the supercooling system is connected into the heating circulation loop and the refrigerating circulation loop and used for cooling the carbon dioxide refrigerant flowing into the first heat return channel of the heat regenerator from the indoor unit and the outdoor unit.
2. The intermediate refrigerant supercooling type carbon dioxide air conditioning system according to claim 1, wherein the supercooling system comprises a supercooling compressor, a supercooling electronic expansion valve, an intermediate supercooling heat exchanger, a supercooling liquid storage tank and a supercooling gas-liquid separator, one end of a first heat exchange flow channel of the intermediate supercooling heat exchanger is respectively connected with the indoor unit and the outdoor unit, and the other end of the first heat exchange flow channel of the intermediate supercooling heat exchanger is connected with a first heat return channel of the heat regenerator;
an exhaust port of the supercooling compressor is sequentially connected with the indoor unit, the supercooling liquid storage tank, the supercooling electronic expansion valve, a second heat exchange flow channel of the intermediate supercooling heat exchanger and the supercooling liquid separator through pipelines and then returns to an air suction port of the supercooling compressor to form a heating supercooling loop;
and an exhaust port of the supercooling compressor is sequentially connected with the outdoor unit, the supercooling liquid storage tank, the supercooling electronic expansion valve, a second heat exchange flow channel of the intermediate supercooling heat exchanger and the supercooling gas-liquid separator through pipelines and then returns to a gas suction port of the supercooling compressor to form a refrigeration supercooling loop.
3. The intercooling carbon dioxide air conditioning system of claim 2, wherein:
and the supercooling compressor is provided with a control device and a frequency converter.
4. The intercooling carbon dioxide air conditioning system of claim 2, wherein:
and a filter is arranged at the liquid outlet end of the supercooling liquid storage tank.
5. The intercooling carbon dioxide air conditioning system of claim 2, wherein:
the exhaust port end of the overcooling compressor is provided with a high-pressure safety device, and the inlet end of the overcooling gas-liquid separator is provided with a low-pressure safety device.
6. The intercooling carbon dioxide air conditioning system of claim 2, wherein:
and a liquid viewing mirror is arranged at the liquid outlet end of the supercooling liquid storage tank.
7. The intercooling carbon dioxide air conditioning system of claim 1, wherein:
the high-pressure safety device is arranged at the exhaust port end of the carbon dioxide compressor, and the low-pressure safety device is arranged at the inlet end of the gas-liquid separator.
8. The intercooling carbon dioxide air conditioning system of claim 1, wherein:
the outlet end of the gas-liquid separator and the liquid outlet end of the liquid storage tank are both provided with filters.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121579989.8U CN215892822U (en) | 2021-07-12 | 2021-07-12 | Intermediate refrigerant supercooling type carbon dioxide air conditioning system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121579989.8U CN215892822U (en) | 2021-07-12 | 2021-07-12 | Intermediate refrigerant supercooling type carbon dioxide air conditioning system |
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| CN202121579989.8U Active CN215892822U (en) | 2021-07-12 | 2021-07-12 | Intermediate refrigerant supercooling type carbon dioxide air conditioning system |
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