CN217763967U - Refrigerating system and air conditioning equipment - Google Patents
Refrigerating system and air conditioning equipment Download PDFInfo
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- CN217763967U CN217763967U CN202221573336.3U CN202221573336U CN217763967U CN 217763967 U CN217763967 U CN 217763967U CN 202221573336 U CN202221573336 U CN 202221573336U CN 217763967 U CN217763967 U CN 217763967U
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Abstract
The utility model provides a refrigerating system and air conditioning equipment relates to air conditioning technology field, and it is higher to have solved refrigerating system compressor compression ratio, technical problem that the energy consumption is high. The refrigerating system comprises a compressor, a throttling device, an evaporator, an ejector and a cooling device communicated with an outlet of the compressor, wherein an outlet of the cooling device is sequentially communicated with inlets of the throttling device and the evaporator through a first branch, and an outlet of the evaporator is communicated with a first inlet of the ejector; the outlet of the cooling device is communicated with the second inlet of the ejector through a second branch, the second branch is connected with the first branch in parallel, and the outlet of the ejector is communicated with the gas inlet of the compressor. The utility model discloses can improve the suction pressure of compressor, reduce the compression ratio of compressor to reduce the system energy consumption.
Description
Technical Field
The utility model belongs to the technical field of the air conditioning technique and specifically relates to a refrigerating system and air conditioning equipment are related to.
Background
A refrigeration system in the prior art includes a compressor, a gas cooler or condenser, a throttling device, and an evaporator, wherein a refrigerant is compressed by the compressor into a high-temperature and high-pressure gas, the gas enters the gas cooler or condenser, and then is throttled and depressurized by the throttling device, and enters the evaporator, and the low-temperature and low-pressure gas from the evaporator enters the compressor again.
The applicant has found that the prior art has at least the following technical problems: in the prior art, most of compressors of a refrigeration system are compressed in a single stage, the pressure of gas entering the compressors from evaporators is low, and in order to enable the refrigeration system to obtain a lower temperature, the compression ratio of the single-stage compression is easily too large, so that the actual compression process deviates from the isentropic compression process, the energy efficiency of the system is too low, and the energy consumption is high. However, the use of two-stage compression also increases the power consumption of the system and reduces the energy efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a refrigerating system and air conditioning equipment to solve the refrigerating system that exists among the prior art in that the compressor compression ratio is higher, the technical problem that the energy consumption is high. The utility model provides a plurality of technological effects that preferred technical scheme among a great deal of technical scheme can produce are seen in the explanation below in detail.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a pair of refrigerating system, including compressor, throttling arrangement, evaporimeter, sprayer and communicate in the cooling device of compressor export, wherein:
an outlet of the cooling device is sequentially communicated with the throttling device and an inlet of the evaporator through a first branch, and an outlet of the evaporator is communicated with a first inlet of the ejector;
the outlet of the cooling device is communicated with the second inlet of the ejector through a second branch, the second branch is connected with the first branch in parallel, and the outlet of the ejector is communicated with the gas inlet of the compressor.
Preferably, the refrigeration system further comprises a gas-liquid separator, the gas-liquid separator has at least two inlets, one inlet of the gas-liquid separator is communicated with the outlet of the throttling device, and the other inlet of the gas-liquid separator is communicated with the outlet of the evaporator;
the liquid outlet of the gas-liquid separator is communicated with the inlet of the evaporator, and the gas outlet thereof is communicated with the first inlet of the ejector.
Preferably, the nozzle of the ejector is communicated with the outlet of the cooling device as the second inlet, the mixing chamber of the ejector is communicated with the gas outlet of the gas-liquid separator as the first inlet, and the pressure expansion chamber of the ejector is communicated with the gas inlet of the compressor.
Preferably, the height of the evaporator is lower than the height of the gas-liquid separator, and the liquid in the gas-liquid separator can flow into the evaporator under the action of gravity.
Preferably, the first branch is further provided with a valve body, and the valve body is located in a pipeline between the throttling device and the gas-liquid separator and used for controlling communication or blocking of a flow passage between the throttling device and the gas-liquid separator.
Preferably, the refrigeration system further comprises:
a liquid level sensor for detecting a liquid level within the gas-liquid separator;
the control unit is electrically connected with the liquid level sensor and the valve body and is used for controlling the valve body to be closed when the liquid level in the gas-liquid separator is higher than a first set liquid level; and the valve body is controlled to be opened when the liquid level in the gas-liquid separator is lower than a second set liquid level, wherein the first set liquid level is higher than the second set liquid level.
Preferably, the restriction device comprises an expander or a throttle valve.
Preferably, the cooling means comprises a gas cooler.
Preferably, the refrigerant circulating in the refrigeration system comprises CO 2 Or R32 or R290 or R134a.
The utility model also provides an air conditioning equipment, including above-mentioned refrigerating system.
The utility model provides a refrigerating system and air conditioning equipment compares with prior art, has following beneficial effect: one part of the high-pressure fluid after passing through the cooling device flows into the first branch, becomes low-pressure fluid after being throttled and depressurized by the throttling device, can enter the evaporator, the other part of the high-pressure fluid flows into the second branch and directly enters the ejector, the high-pressure fluid in the ejector ejects low-pressure gas passing through the evaporator under the action of pressure difference, and the formed mixed fluid forms medium-pressure gas in the ejector and enters the compressor; the air suction pressure of the compressor can be improved, and the compression ratio of the compressor is reduced, so that the energy consumption of the system is reduced.
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 these drawings without creative efforts.
FIG. 1 is a schematic block diagram of a first embodiment of a refrigeration system;
fig. 2 is a schematic configuration diagram of a second embodiment of a refrigeration system.
In figure 1, a compressor; 2. a cooling device; 3. an ejector; 4. a throttling device; 5. an evaporator, 6, a gas-liquid separator; 7. a valve body; 10. a first branch; 20. a second branch.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
A refrigeration system in the prior art includes a compressor, a gas cooler or condenser, a throttling device, and an evaporator, wherein a refrigerant is compressed by the compressor into a high-temperature and high-pressure gas, the gas enters the gas cooler or condenser, and then is throttled and depressurized by the throttling device, and enters the evaporator, and the low-temperature and low-pressure gas from the evaporator enters the compressor again.
The embodiment of the utility model provides a refrigerating system and air conditioning equipment can improve the suction pressure of compressor, reduces the compression ratio of compressor to reduce the system energy consumption.
The technical solution provided by the present invention is explained in more detail with reference to fig. 1 and fig. 2.
As shown in fig. 1 and fig. 2, the present embodiment provides a refrigeration system including a compressor 1, a throttling device 4, an evaporator 5, an ejector 3, and a cooling device 2 communicated with an outlet of the compressor 1, wherein: an outlet of the cooling device 2 is sequentially communicated with inlets of the throttling device 4 and the evaporator 5 through a first branch 10, and an outlet of the evaporator 5 is communicated with a first inlet of the ejector 3; the second branch 20 is arranged in parallel with the first branch 10, i.e. the outlet of the cooling device 2 is communicated with the second inlet of the ejector 3 through the second branch 20, and the second inlet is communicated with the inlet end of the throttling device 4, and the outlet of the ejector 3 is communicated with the gas inlet of the compressor 1.
The structure of the ejector 3 is the existing mature technology, and the structure is not described herein again.
In the refrigeration system of the embodiment, a refrigerant is compressed by a compressor 1 to become high-temperature high-pressure gas, the gas enters a cooling device 2, a part of high-pressure fluid passing through the cooling device 2 flows into a first branch 10, is throttled and reduced in pressure by a throttling device 4 to become low-pressure fluid and can enter an evaporator 5, the other part of high-pressure fluid flows into a second branch 20 and directly enters an ejector 3, the high-pressure fluid in the ejector 3 ejects the low-pressure gas passing through the evaporator 5 under the action of pressure difference, and the formed mixed fluid forms medium-pressure gas in the ejector 3 and enters the compressor 1; compared with the prior art, the low-pressure saturated gas of the evaporator 5 directly flows into the compressor 1, so that the suction pressure of the compressor 1 can be improved, the compression ratio of the compressor 1 can be reduced, and the energy consumption of the system can be reduced.
In this embodiment, the refrigerant circulating in the refrigeration system may be CO 2 ，CO 2 The refrigerant is in a transcritical cycle in the system, and is not subjected to phase change in the condensing unit, but only the cooling process of the gas, so that the cooling device 2 can be a gas cooler in this case.
As an alternative embodiment, in this embodiment, the refrigerant flowing through the refrigeration system is an environment-friendly refrigerant such as R32, R290, R134a, and in this case, the gas cooler may be replaced by a condenser.
The refrigeration system of the embodiment is not limited by the type of the refrigerant, has diversified refrigerant selection, and can reduce the compression ratio of the compressor 1 and reduce the energy consumption of the system.
Specifically, the refrigeration system of the present embodiment provides two specific embodiments:
example one
Referring to fig. 1, in the present embodiment the outlet of the evaporator 5 communicates directly with the first inlet of the ejector 3.
Refrigerant is compressed into high-temperature high-pressure gas by a compressor 1, the gas enters a cooling device 2, part of high-pressure fluid passing through the cooling device 2 flows into a first branch 10, is throttled and reduced in pressure by a throttling device 4 to become low-pressure fluid and can enter an evaporator 5, the other part of high-pressure fluid flows into a second branch 20 and directly enters an ejector 3, the high-pressure fluid in the ejector 3 ejects saturated low-pressure gas at the outlet section of the evaporator 5 under the action of pressure difference, and the formed mixed fluid forms medium-pressure gas in the ejector 3 and enters the compressor 1.
The structure of this embodiment can reduce the compression ratio of compressor 1, reduces the system energy consumption, however, the refrigerant of 5 export sections of evaporimeter is saturated gas or superheated gas, can't avoid the continuous grow of 5 export sections of evaporimeter quality of quality to lead to the problem that heat transfer capacity reduces.
Example two
Referring to fig. 2, in the present embodiment, the outlet of the evaporator 5 communicates with the first inlet of the ejector 3 through the gas-liquid separator 6.
Specifically, referring to fig. 2, the refrigeration system of the present embodiment further includes a gas-liquid separator 6, where the gas-liquid separator 6 has at least two inlets, one inlet of the gas-liquid separator 6 is communicated with the outlet of the throttling device 4, and the other inlet of the gas-liquid separator 6 is communicated with the outlet of the evaporator 5; the liquid outlet of the gas-liquid separator 6 communicates with the inlet of the evaporator 5, and the gas outlet thereof communicates with the first inlet of the ejector 3.
Referring to fig. 2, a refrigerant is compressed by a compressor 1 into a high-temperature and high-pressure gas, the gas enters a cooling device 2 (a gas cooler or a condenser), the high-pressure fluid cooled by the cooling device 2 is divided into two paths, one of the two paths flows into a first branch 10, the high-pressure fluid is throttled and depressurized by a throttling device 4 to become a gas-liquid two-phase fluid and enters a gas-liquid separator, liquid in the gas-liquid separator enters an evaporator 5, and bubbles generated by heat absorption of evaporation of the fluid in the evaporator 5 return to the gas-liquid separator under the action of thermosiphon. The other part of the high-pressure fluid flows into the second branch 20 and directly enters the ejector 3, the high-pressure fluid in the ejector 3 ejects low-pressure gas passing through the evaporator 5 under the action of pressure difference, and the formed fluid becomes medium-pressure gas under the action of diffusion of the ejector 3 and enters the compressor 1 to sequentially and circularly operate.
The fluid in the evaporator 5 absorbs heat through evaporation and bubbles generated are returned to the vapor-liquid separator under the action of thermosiphon, and the principle of the method is that the thermosiphon action is utilized. The thermosiphon is a process of vaporizing liquid partially by heating to form a vapor-liquid mixture, reducing the density and using the density difference as a driving force. As the name suggests, siphoning occurs powered by heat. After the liquid is heated, the volume is expanded, the density is reduced and becomes light, the density is increased, and the cold liquid at the periphery is supplemented to form a circulation. Mainly utilizes the density difference between gas phase and liquid phase as driving force to make circulation.
The gas-liquid separator 6 is a mature technology in the prior art, and the structure thereof is not described herein. The gas-liquid separator 6 described above plays a role of supplying the entire amount of the low-temperature liquid to the evaporator 5 and preventing the compressor 1 from liquid hammering.
As an alternative embodiment, referring to fig. 2, the height of the evaporator 5 is lower than the height of the gas-liquid separator 6, and the liquid in the gas-liquid separator 6 can flow into the evaporator 5 by gravity. The above structure facilitates the refrigerant liquid in the gas-liquid separation to flow into the evaporator 5 under the action of gravity, so that the refrigerant liquid entering the evaporator 5 is pure refrigerant liquid. And a gravity recirculation liquid supply mode is utilized to realize super-power liquid supply, the heat transfer coefficient of the evaporator 5 is improved, and the system energy efficiency is improved.
In the second embodiment, the liquid in the vapor-liquid separator enters the evaporator 5 under the action of gravity, the gas-liquid two phases in the evaporator 5 return to the vapor-liquid separator, and the saturated gas in the vapor-liquid separator 6 enters the compressor 1 again. Compared with the prior art in which two gas-liquid phases enter the evaporator 5 in the first embodiment, the saturated gas in the evaporator 5 directly flows into the compressor 1, which has the following advantages:
by utilizing gravity recirculation, the liquid in the vapor-liquid separator enters the evaporator 5 under the action of gravity to realize 'super liquid supply', namely the liquid supply amount to the evaporator 5 is larger than the evaporation amount; latent heat is always utilized by the refrigerant in the evaporator 5 for heat exchange, the humidity of the refrigerant in the evaporator 5 is increased, the reduction of gasification quantity caused by overhigh dryness of the refrigerant at the outlet section of the evaporator 5 is prevented, the heat transfer coefficient of the evaporator 5 is improved, the heat exchange quantity of the evaporator 5 is improved, and the phenomenon of uneven liquid distribution of pipelines of the evaporator 5 is avoided, so that the energy efficiency of the system is improved.
The following is a detailed description of the principle that the above structure of the present embodiment can improve the heat exchange capacity of the heat exchanger:
first, in the prior art, the refrigerant entering the evaporator 5 is in a gas-liquid two-phase state, and in order to prevent the evaporator 5 from supplying a low-temperature liquid to cause slugging of the compressor 1, the outlet pipe section of the evaporator 5 must supply a saturated gas or a superheated gas into the evaporator 5. Along with the continuous proceeding of heat exchange, a large amount of gas exists in the rear section of the evaporator 5, and single-phase heat exchange of the gas exists, namely, sensible heat exchange of refrigerant gas is utilized; that is, the dryness of the outlet section of the evaporator 5 is relatively large (the dryness refers to the mass fraction or mole fraction of the vapor phase in the gas-liquid coexisting material), and for the refrigerant in the pipeline of the refrigeration system, the heat exchange coefficient of the boiling heat exchange of the refrigerant in the pipeline is gradually reduced along with the gradual increase of the dryness. Therefore, in the prior art, since the outlet section of the evaporator 5 is saturated gas or superheated gas of the refrigerant, the heat exchange coefficient of the evaporator 5 gradually decreases with the increase of the dryness.
Therefore, in order to make the heat exchange coefficient of the evaporator 5 sufficiently high, the dryness of the refrigerant in the evaporator 5 must be minimized, and most of the effective heat exchange area is in contact with the saturated or even supercooled refrigerant, so as to keep most of the refrigerant side area in a continuously vigorous boiling heat exchange region.
In this embodiment, the refrigerant liquid in the gas-liquid separator 6 enters the evaporator 5 under the action of gravity, so as to realize "super-power liquid supply", that is, the amount of liquid supplied to the evaporator 5 is greater than the evaporation amount thereof; all the refrigerant entering the evaporator 5 is low-temperature refrigerant liquid, and due to the arrangement of the gas-liquid separator 6, the refrigerant at the outlet section of the evaporator 5 is not required to be saturated gas, and the refrigerant at the outlet section of the evaporator 5 is in a gas-liquid two-phase state in the embodiment. Therefore, the refrigerant in the evaporator 5 can fully utilize latent heat for heat exchange, (namely, two-phase heat exchange, the heat exchange efficiency of the two-phase heat exchange is greater than that of one-way heat exchange), the dryness of the outlet section of the evaporator 5 can be guaranteed to be 0.5,0.3,0.2 and the like all the time, the dryness of the outlet section of the evaporator 5 is reduced, the reduction of gasification capacity caused by the overlarge dryness of the outlet section of the evaporator 5 is prevented, the humidity degree in the evaporator 5 is increased, the flow velocity in the pipe is increased, the effective heat exchange area is increased, and the heat exchange capacity is greatly increased.
As an alternative embodiment, in the present embodiment, the nozzle of the ejector 3 is communicated with the outlet of the cooling device 2 as the second inlet, the mixing chamber of the ejector 3 is communicated with the gas outlet of the gas-liquid separator 6 as the first inlet, and the pressure expansion chamber of the ejector 3 is communicated with the gas inlet of the compressor 1.
When the high-pressure fluid enters a nozzle (a second inlet) of the ejector 3, the flow speed is increased, the pressure is sharply reduced, the saturated gas in the gas-liquid separator can be absorbed under the action of differential pressure, then the saturated gas is mixed in a mixing chamber (a first inlet) of the ejector 3, and then the mixed gas is pressurized through a pressure expansion chamber (an outlet) to form medium-pressure gas and enters the compressor 1, so that the suction pressure of the compressor 1 can be increased, the compression ratio of the compressor 1 is reduced, and the energy consumption of a system is reduced.
As an alternative embodiment, referring to fig. 2, a valve body 7 is further disposed on the first branch line 10, and the valve body 7 is located in a line between the throttling device 4 and the gas-liquid separator 6, and is used for controlling communication or blocking of a flow passage between the throttling device 4 and the gas-liquid separator 6.
The valve body 7 may be an electromagnetic valve in the prior art, and the structure thereof is not described herein. Due to the arrangement of the valve body 7, the amount of the refrigerant in the gas-liquid separator 6 can be maintained within a certain range, and the refrigerant in the gas-liquid separator 6 is prevented from being too much or too little.
As an optional implementation manner, the refrigeration system of this embodiment further includes:
a liquid level sensor for detecting a liquid level in the gas-liquid separator 6;
the control unit is electrically connected with the liquid level sensor and the valve body 7 and is used for controlling the valve body 7 to be closed when the liquid level in the gas-liquid separator 6 is higher than a first set liquid level; and is used for controlling the valve body 7 to open when the liquid level in the gas-liquid separator 6 is lower than a second set liquid level, wherein the first set liquid level is higher than the second set liquid level.
In the refrigeration system of the embodiment, the system can control the flow rate of the fluid entering the vapor-liquid separator by controlling the opening and closing of the valve body 7 through the control unit, so as to realize the circulation operation of the refrigerant between the vapor-liquid separator and the evaporator 5. When the liquid level sensor detects that the refrigerant in the gas-liquid separator is lower than a second set liquid level, the control unit controls the valve body 7 to be opened, so that the situation that the refrigerant in the gas-liquid separator 6 is too little, so that the liquid of the refrigerant supplied into the evaporator 5 is insufficient, and the heat exchange quantity of the evaporator 5 is influenced is prevented; when the liquid level sensor detects that the refrigerant in the gas-liquid separator is higher than a first set liquid level, the control unit controls the valve body 7 to close, and the refrigerant in the gas-liquid separator 6 is prevented from being excessive.
As an alternative embodiment, see fig. 2, the throttle means 4 comprises an expander or a throttle valve.
Specifically, when the refrigerant in the refrigeration system is an environment-friendly refrigerant such as R32, R290, R134a, etc., the gas cooler in the refrigeration system may be replaced by a condenser, and the expander may be replaced by a throttle valve, but the throttling loss may increase and the system energy consumption may also increase.
Preferably, when the refrigerant in the refrigeration system is CO 2 When the gas refrigerant is used, the throttling device 4 includes an expander, and throttling is performed by the expander, so that not only can throttling loss be reduced, but also expansion work can be recovered and conveyed to the compressor 1, the power consumption of the compressor 1 can be reduced, and the performance of the system can be effectively improved.
In the refrigeration system of the present embodiment, firstly, the suction pressure of the compressor 1 can be increased by utilizing the diffusion of the ejector 3, and the compression ratio of the compressor 1 is reduced, thereby reducing the energy consumption of the system; secondly, the liquid supply mode of the evaporator 5 adopts gravity recirculation, thereby realizing 'super-power liquid supply', increasing the flow velocity of the refrigerant in the evaporator 5, improving the heat transfer coefficient of the evaporator 5 and further increasing the heat exchange capacity of the evaporator 5. Meanwhile, the phenomenon that the liquid supply of the evaporator 5 is uneven in a direct expansion liquid supply mode is avoided.
EXAMPLE III
The embodiment provides an air conditioning equipment, which comprises the refrigerating system.
The air conditioning equipment of the embodiment has the advantages of reducing the compression ratio of the compressor 1 and reducing the energy consumption of the system because of the refrigeration system. And on the basis of the second embodiment, the heat transfer coefficient of the evaporator 5 is also improved, so that the heat exchange amount of the evaporator 5 is increased.
The particular features, structures, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A refrigeration system comprising a compressor, a throttling device, an evaporator, an ejector and a cooling device in communication with an outlet of said compressor, wherein:
an outlet of the cooling device is sequentially communicated with the throttling device and an inlet of the evaporator through a first branch, and an outlet of the evaporator is communicated with a first inlet of the ejector;
the outlet of the cooling device is communicated with the second inlet of the ejector through a second branch, the second branch is connected with the first branch in parallel, and the outlet of the ejector is communicated with the gas inlet of the compressor.
2. The refrigeration system according to claim 1, further comprising a gas-liquid separator having at least two inlets, wherein one inlet of the gas-liquid separator is communicated with the outlet of the throttling device, and the other inlet of the gas-liquid separator is communicated with the outlet of the evaporator;
the liquid outlet of the gas-liquid separator is communicated with the inlet of the evaporator, and the gas outlet thereof is communicated with the first inlet of the ejector.
3. A refrigeration system according to claim 2, wherein a nozzle of the ejector communicates with an outlet of the cooling device as the second inlet, a mixing chamber of the ejector communicates with a gas outlet of the gas-liquid separator as the first inlet, and a diffuser chamber of the ejector communicates with a gas inlet of the compressor.
4. The refrigeration system of claim 2 wherein the evaporator has a height that is less than the height of the vapor-liquid separator and the liquid in the vapor-liquid separator is able to flow into the evaporator by gravity.
5. The refrigeration system as recited in claim 2 or 4, wherein a valve body is further arranged on the first branch, and the valve body is positioned in a pipeline between the throttling device and the gas-liquid separator and used for controlling the communication or the blockage of a flow passage between the throttling device and the gas-liquid separator.
6. The refrigeration system as set forth in claim 5, further including:
a liquid level sensor for detecting a liquid level within the gas-liquid separator;
the control unit is electrically connected with the liquid level sensor and the valve body and is used for controlling the valve body to be closed when the liquid level in the gas-liquid separator is higher than a first set liquid level; and the valve body is controlled to be opened when the liquid level in the gas-liquid separator is lower than a second set liquid level, wherein the first set liquid level is higher than the second set liquid level.
7. The refrigerant system as set forth in claim 1, wherein said throttling means includes an expander or a throttle valve.
8. The refrigeration system of claim 1, wherein said cooling device comprises a gas cooler.
9. The refrigerant system as set forth in claim 1, wherein said refrigerant circulating in said refrigerant system includes CO 2 Or R32 or R290 or R134a.
10. An air conditioning apparatus, characterized by comprising a refrigeration system according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221573336.3U CN217763967U (en) | 2022-06-21 | 2022-06-21 | Refrigerating system and air conditioning equipment |
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| CN202221573336.3U CN217763967U (en) | 2022-06-21 | 2022-06-21 | Refrigerating system and air conditioning equipment |
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| CN217763967U true CN217763967U (en) | 2022-11-08 |
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