CN115289723A - Throttling structure and air conditioning unit - Google Patents
Throttling structure and air conditioning unit Download PDFInfo
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- CN115289723A CN115289723A CN202211065864.2A CN202211065864A CN115289723A CN 115289723 A CN115289723 A CN 115289723A CN 202211065864 A CN202211065864 A CN 202211065864A CN 115289723 A CN115289723 A CN 115289723A
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- throttling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- Mechanical Engineering (AREA)
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- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention discloses a throttling structure and an air conditioning unit, wherein the throttling structure comprises: the main cavity body and independently locate the internal at least one supplementary throttle cavity of main cavity, the exit linkage of the main cavity body has main orifice plate, supplementary throttle cavity is equipped with the inlet of the intercommunication main cavity body, the liquid outlet of supplementary throttle cavity is connected with supplementary orifice plate, the through-flow area of inlet is greater than the through-flow area of supplementary orifice plate. The auxiliary throttling cavity is used in at least one operation condition, the liquid level of the main cavity under the operation condition is higher than the liquid inlet of the corresponding auxiliary throttling cavity, and the flow area of the auxiliary throttling orifice plate used in each operation condition is the set flow area of the operation condition minus the flow area of the main throttling orifice plate. According to the invention, different throttling orifice plate combinations are automatically switched according to the liquid level height of the main cavity, so that the throttling requirements of different operation working conditions of the unit are matched, the unit continuously operates under the optimal performance, and the operation efficiency of the unit is improved.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to a throttling structure capable of adapting to various working conditions and an air conditioning unit.
Background
The existing air conditioning unit usually adopts a throttle orifice plate as a throttle element, and the throttle orifice plate has the remarkable advantages of low cost, simple processing, stability, reliability and the like, but because the throttle orifice plate is a fixed aperture, once the unit is manufactured, the aperture can not be adjusted according to the working condition of the unit, and the throttle orifice plate can not adapt to the working condition switching of the unit.
As shown in fig. 1, taking a centrifugal heat pump unit as an example, a flash tank 3 is arranged between a condenser 4 and an evaporator 2, an outlet of the condenser 4 is connected with a primary main orifice plate 5, an outlet of the flash tank 3 is connected with a secondary main orifice plate 6, and an air outlet of the flash tank 3 is connected with a compressor 1 through an air supplement pipe 7. The group needs to operate the refrigerating working condition in summer and the group needs to operate the heating working condition in winter, and the difference between the heating working condition and the refrigerating working condition is large, so that the aperture of the throttling hole plate required by refrigerant circulation is large, the throttling scheme of the two-stage throttling hole plate is difficult to consider the two operating working conditions of refrigerating and heating of the unit, the size of the throttling aperture cannot be adjusted according to the working condition switching, the unit cannot fully exert the operating performance, and the operating efficiency of the unit is influenced.
Therefore, how to design a throttling structure and an air conditioning unit capable of adapting to various working conditions is an urgent technical problem to be solved in the industry.
Disclosure of Invention
In order to solve the defect that the existing throttling scheme cannot adapt to different working conditions of the unit and causes low operation efficiency of the unit, the invention provides a throttling structure and an air conditioning unit.
The technical scheme adopted by the invention is that a throttling structure is designed, and the throttling structure comprises the following components: the main cavity body and independently locate the internal at least one supplementary throttle cavity of main cavity, the exit linkage of the main cavity body has main throttle orifice plate, and supplementary throttle cavity is equipped with the inlet of the intercommunication main cavity body, and the liquid outlet of supplementary throttle cavity is connected with supplementary throttle orifice plate.
Furthermore, the flow area of the liquid inlet is larger than that of the auxiliary throttling orifice plate.
Furthermore, the main throttle orifice plate and the auxiliary throttle orifice plate are connected in parallel on the liquid outlet pipeline.
Furthermore, the auxiliary throttling cavity is used at least in one operation condition, and the liquid level of the main cavity under the operation condition is higher than the liquid inlet of the corresponding auxiliary throttling cavity.
Furthermore, the flow area of the auxiliary orifice plate used in each operating condition is the set flow area of the operating condition minus the flow area of the main orifice plate.
In some embodiments, a liquid outlet of the auxiliary throttling cavity is connected with a plurality of auxiliary throttling orifice plates arranged in parallel, and each auxiliary throttling orifice plate is provided with a control valve for switching the on-off state of the auxiliary throttling orifice plate.
In some embodiments, a plurality of auxiliary throttling cavities are distributed in the main cavity, and the liquid inlet height of each auxiliary throttling cavity is different.
In some embodiments, the throttling structure is provided in the heat exchanger and/or the flash tank.
The invention also proposes an air conditioning unit comprising: compressor, condenser and evaporimeter, the condenser is equipped with foretell throttle structure.
In some embodiments, the air conditioning assembly further comprises: the flash tank is provided with the throttling structure, the throttling structure of the condenser is connected with the flash tank through a first liquid outlet pipeline, and the throttling structure of the flash tank is connected with the evaporator through a second liquid outlet pipeline.
Furthermore, the condenser and the evaporator are connected with user side equipment, and the refrigerant circulation directions among the compressor, the condenser and the evaporator are the same under different operation working conditions.
Further, the air conditioning unit has a refrigeration working condition and a heating working condition, the auxiliary throttling cavity is used in the refrigeration working condition, the liquid level of the main cavity under the refrigeration working condition is higher than the liquid inlet of the auxiliary throttling cavity, and the liquid level of the main cavity under the heating working condition is lower than the liquid inlet of the auxiliary throttling cavity.
In some embodiments, the air conditioning unit is a heat pump unit.
Compared with the prior art, the auxiliary throttling cavity is arranged in the main cavity, the main cavity and the auxiliary throttling cavity are respectively connected with the throttling orifice plate, and the refrigerant can enter the corresponding auxiliary throttling cavity from the liquid inlet according to different liquid level heights of the main cavity under different operating conditions, so that different aperture combinations of the throttling orifice plates can be automatically switched, different throttling effects are achieved, throttling requirements of the unit under different operating conditions are matched, the operating performance of the unit is fully exerted, and the operating efficiency of the unit is improved.
Drawings
The invention is described in detail below with reference to examples and figures, in which:
FIG. 1 is a schematic illustration of the connection of a prior art air conditioning unit;
FIG. 2 is a schematic view of the connection of the throttling structure of the present invention;
FIG. 3 is a schematic view of the liquid level of the air conditioning unit of the present invention under a heating condition;
FIG. 4 is a schematic view of the liquid level of the air conditioning unit of the present invention under a refrigeration condition.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the patent and do not limit the patent.
As shown in fig. 2 to 4, the throttling structure provided by the present invention is suitable for devices participating in refrigerant circulation, including but not limited to a heat exchanger or a flash evaporator, and the heat exchanger with the throttling structure is used as a condenser when installed in an air conditioning unit, because the liquid refrigerant flowing out of the condenser needs to be throttled and then sent to an evaporator.
The inventor finds that, under different operating conditions, the liquid level height in the condenser 4 is obviously different, for example, when the flow rate of a refrigerant circulation loop in which the condenser 4 is located is large and the pressure ratio is small, the liquid level in the condenser 4 is higher, the required throttling aperture is larger, and when the flow rate of the refrigerant circulation loop in which the condenser 4 is located is small and the pressure ratio is large, the liquid level in the condenser 4 is lower, and the required throttling aperture is smaller. In some application scenes, the condenser 4 is connected with the flash evaporator 3, liquid refrigerant flowing out of the condenser 4 is delivered into the flash evaporator 3 through primary throttling, liquid refrigerant flowing out of the flash evaporator 3 is delivered into the evaporator 2 through secondary throttling, the flash evaporator 3 and the condenser 4 are in the same refrigerant circulation loop, the liquid level variation trend of the flash evaporator 3 is the same as that of the condenser 4, and the required throttling aperture can be matched with different operation working conditions only through adaptive adjustment. Based on the above findings, the inventors have devised and proposed a throttle structure that automatically switches the combination of the orifice plate hole diameters according to the liquid level height, and the throttle structure will be described in detail below.
As shown in fig. 2, the throttling structure includes: main cavity 100 and at least one supplementary throttle cavity 110, main cavity 100 is equipped with import and export, the refrigerant gets into in the main cavity 100 from the import of main cavity 100, the exit linkage of main cavity 100 has main orifice plate 200, supplementary throttle cavity 110 independently locates in main cavity 100, supplementary throttle cavity 110 is equipped with inlet 111 and liquid outlet, only communicate through supplementary throttle cavity's inlet 111 between supplementary throttle cavity 110 and the main cavity 100, supplementary throttle cavity 110's liquid outlet is connected with supplementary throttle orifice plate 300, supplementary throttle cavity's inlet 111 height is in between the import and the export of main cavity 100.
The liquid level of the main cavity 100 may be higher than the liquid inlet 111 of the auxiliary throttling cavity or lower than the liquid inlet 111 of the auxiliary throttling cavity under different working conditions. When the liquid level of the main cavity 100 is lower than the liquid inlet 111 of the auxiliary throttling cavity, the auxiliary throttling cavity 110 is not used, and only the main cavity 100 participates in throttling work; when the liquid level of the main cavity 100 is higher than the liquid inlet 111 of the auxiliary throttling cavity, the auxiliary throttling cavity 110 is used, liquid refrigerant enters the auxiliary throttling cavity 110 from the liquid inlet 111, and the main throttling orifice plate 200 and the auxiliary throttling orifice plate 300 both participate in throttling work, which is equivalent to that the main throttling orifice plate 200 and the auxiliary throttling orifice plate 300 are arranged in parallel.
In order to ensure that the liquid refrigerant in the main cavity 100 can smoothly enter the auxiliary throttle cavity 110, the flow area of the liquid inlet 111 of the auxiliary throttle cavity is larger than that of the auxiliary throttle orifice 300, so that the throttling phenomenon when the liquid refrigerant enters the auxiliary throttle cavity 110 is avoided, and the throttling effect of the auxiliary throttle cavity 110 is optimized.
In some embodiments, the main orifice plate 200 and the auxiliary orifice plate 300 are connected in parallel to the liquid outlet pipe, and the refrigerants flowing out of the main orifice plate 200 and the auxiliary orifice plate 300 are merged in the liquid outlet pipe and then transported, so that the refrigerants delivered out of the liquid outlet pipe are uniformly mixed and in a stable state. Of course, in practical applications, the primary orifice plate 200 and the secondary orifice plate 300 may be connected to the liquid outlet pipeline respectively, and the present invention is not limited thereto.
It should be noted that the liquid outlet of the auxiliary throttle cavity 110 may be connected to one auxiliary throttle orifice 300, or may be connected to a plurality of auxiliary throttle orifice 300 according to actual use requirements, when the liquid outlet of the auxiliary throttle cavity 110 is connected to a plurality of auxiliary throttle orifice 300 arranged in parallel, each auxiliary throttle orifice 300 is configured with a control valve for switching the on-off state thereof, and the number of the connected auxiliary throttle orifice 300 is adjusted by the control valve, so as to implement different throttle aperture combinations, and improve the flexibility of throttle adjustment.
In addition, an auxiliary throttling cavity 110 can be designed inside the main cavity 100, or a plurality of auxiliary throttling cavities 110 can be designed according to actual use requirements, when a plurality of auxiliary throttling cavities 110 are distributed inside the main cavity 100, the height of the liquid inlet 111 of each auxiliary throttling cavity is different, the liquid level height of the main cavity 100 is changed under different operation conditions, the auxiliary throttling cavities 110 participating in throttling work are automatically switched by comparing the heights of the liquid inlets 111 of the auxiliary throttling cavities, different throttling effects are achieved, the operation conditions are matched, and the operation efficiency is improved.
In order to realize accurate switching of the auxiliary throttling cavities 110, each auxiliary throttling cavity 110 is used in at least one operation condition, and the liquid level of the main cavity 100 under the operation condition is higher than the liquid inlet 111 of the corresponding auxiliary throttling cavity under the operation condition, so that the auxiliary throttling cavity 110 can be used under the corresponding operation condition. In order to realize accurate switching of the throttle aperture, a set flow area of each operation condition is obtained in advance, the set flow area can be obtained through statistics by means of experiments and the like, and the flow area of the auxiliary throttle orifice plate 300 used in each operation condition is obtained by subtracting the flow area of the main throttle orifice plate 200 from the set flow area of the operation condition. It should be understood that the set flow area, the flow area of the auxiliary orifice 300 and the flow area of the main orifice 200 are for the same device, and when the condenser 4 and the flash tank 3 are present in the unit, and both the condenser 4 and the flash tank 3 are provided with the throttling structure, the flow areas of the auxiliary orifice 300, each of which is used in different operating conditions, are calculated for the condenser 4 and the flash tank 3, respectively.
The invention also proposes an air conditioning unit comprising: compressor, condenser and evaporimeter, the condenser is equipped with foretell throttle structure, and air conditioning unit can be heat pump set, for example centrifugal heat pump set etc..
In some embodiments, the condenser and the evaporator are connected with user side equipment, and the refrigerant circulation directions among the compressor, the condenser and the evaporator are the same under different operation conditions, so that the throttling capacity can be adjusted by using the throttling structure under different operation conditions, and the unit can fully exert the operation performance. More specifically, the air conditioning unit has the refrigeration operating mode and heats the operating mode, and the auxiliary throttle cavity is used in the refrigeration operating mode, and the liquid level height of main cavity body under the refrigeration operating mode is higher than the inlet of auxiliary throttle cavity, and the liquid level height of main cavity body under the heating operating mode is less than the inlet of auxiliary throttle cavity.
As shown in fig. 3 to 4, in further embodiments, a flash generator 3 is connected between the condenser 4 and the evaporator 2, the flash generator 3 is provided with the above-mentioned throttling structure, the throttling structure of the condenser 4 is a first-stage throttling structure, the throttling structure of the flash generator 3 is a second-stage throttling structure, the first-stage throttling structure is connected to the flash generator 3 through a first liquid outlet pipe, the second-stage throttling structure is connected to the evaporator 2 through a second liquid outlet pipe, and the air outlet of the flash generator 3 is connected to the air supplementing port of the compressor 1 through an air supplementing pipe 7.
The inventor finds that the liquid level heights of the condenser 4 and the flash tank 3 under the refrigerating working condition and the heating working condition are obviously different, the flow rate of a refrigerant is large and the pressure ratio is small when the unit operates the refrigerating working condition, the liquid levels in the condenser 4 and the flash tank 3 are high, the required throttling aperture is large, the flow rate of the refrigerant is small and the pressure ratio is large when the unit operates the heating working condition, and the liquid levels in the condenser 4 and the flash tank 3 are low. Namely, the auxiliary throttling cavities of the condenser 4 and the flash evaporator 3 are not used under the heating working condition, and the auxiliary throttling cavities of the condenser 4 and the flash evaporator 3 are used under the cooling working condition. Based on the above invention, the inventor designs a design scheme of the liquid inlet of the auxiliary throttling cavity, which is described in detail below.
Fig. 3 to 4 show specific application examples of the present invention, a primary auxiliary throttling cavity 8 is arranged inside a main cavity of a condenser 4, a primary auxiliary liquid inlet 9 is arranged on a side wall of the primary auxiliary throttling cavity 8, a primary main throttling orifice plate 5 is connected to the bottom of the main cavity of the condenser 4, a primary auxiliary throttling orifice plate 12 is connected to the bottom of the primary auxiliary throttling cavity 8, a secondary auxiliary throttling cavity 10 is arranged inside the main cavity of the flash generator 3, a secondary auxiliary liquid inlet 11 is arranged on a side wall of the secondary auxiliary throttling cavity 10, a secondary main throttling orifice plate 6 is connected to the bottom of the main cavity of the flash generator 3, and a secondary auxiliary throttling orifice plate 13 is connected to the bottom of the secondary auxiliary throttling cavity 10.
As shown in fig. 3, when the air conditioning unit operates in a heating working condition, the liquid level in the condenser 4 is lower than the primary auxiliary liquid inlet 9, the liquid refrigerant in the condenser 4 does not enter the primary auxiliary throttling cavity 8, the liquid refrigerant in the condenser 4 enters the flash evaporator 3 through the throttling of the primary main throttling orifice 5, part of the refrigerant in the flash evaporator 3 flashes into a gaseous state and enters the compressor 1 through the air supplementing pipe 7, the liquid level in the flash evaporator 3 is lower than the secondary auxiliary liquid inlet 11, the liquid refrigerant in the flash evaporator 3 does not enter the secondary auxiliary throttling cavity 10, and the liquid refrigerant in the flash evaporator 3 enters the evaporator 2 through the throttling of the secondary main throttling orifice 6. The apertures of the primary main orifice plate 5 and the secondary main orifice plate 6 are designed according to the optimal running state of the unit under the heating working condition without considering the cooling working condition.
As shown in fig. 4, when the air conditioning unit operates in the refrigeration condition, the liquid level in the condenser 4 is higher than the primary auxiliary liquid inlet 9, and the liquid refrigerant in the condenser 4 enters the primary auxiliary throttling cavity 8 through the primary auxiliary liquid inlet 9. At the moment, liquid refrigerant in the condenser 4 enters the flash evaporator 3 after being throttled in parallel by the primary main throttle orifice plate 5 and the primary auxiliary throttle orifice plate 12, part of the refrigerant in the flash evaporator 3 flashes to be gaseous and is sent to the compressor 1 through the air supplementing pipe 7, the liquid level in the flash evaporator 3 is higher than the secondary auxiliary liquid inlet 11, the liquid refrigerant in the flash evaporator 3 enters the secondary auxiliary throttle cavity 10 through the secondary auxiliary liquid inlet 11, and the liquid refrigerant in the flash evaporator 3 enters the evaporator 2 after being throttled in parallel by the secondary main throttle orifice plate 6 and the secondary auxiliary throttle orifice plate 13. The apertures of the primary main throttle orifice plate 5 and the secondary main throttle orifice plate 6 are designed according to the optimal operation state of the unit under the heating working condition, the flow area of the primary auxiliary throttle orifice plate 12 is obtained by subtracting the flow area of the primary main throttle orifice plate 5 from the set flow area of the throttle orifice plate required by the condenser under the cooling working condition, and the flow area of the secondary auxiliary throttle orifice plate 13 is obtained by subtracting the flow area of the secondary main throttle orifice plate 6 from the set flow area of the throttle orifice plate required by the flash tank under the cooling working condition.
It should be understood that the flow area of the primary auxiliary inlet 9 is larger than the flow area of the primary auxiliary orifice 12, and the flow area of the secondary auxiliary inlet 11 is larger than the flow area of the secondary auxiliary orifice 13, so as to avoid throttling when entering the auxiliary throttling cavity. The heights of the primary auxiliary liquid inlet 9 and the secondary auxiliary liquid inlet 11 are related to the specification of the condenser 4, the specification of the flash evaporator 3, the heating (cooling) amount and the water temperature of the unit, a shell-and-tube heat exchanger is usually adopted as a heat exchanger in the heat pump unit, and the specifications refer to parameters such as the diameter and the length of a shell. The height design requirement of the liquid inlet is that the first-stage auxiliary liquid inlet 9 is higher than the main cavity liquid level of the condenser 4 under the unit operation heating working condition, the first-stage auxiliary liquid inlet 9 is lower than the main cavity liquid level of the condenser 4 under the unit operation cooling working condition, the second-stage auxiliary liquid inlet 11 is higher than the main cavity liquid level of the flash evaporator 3 under the unit operation heating working condition, and the second-stage auxiliary liquid inlet 11 is lower than the main cavity liquid level of the flash evaporator 3 under the unit operation cooling working condition.
According to the invention, the auxiliary throttling cavities are arranged in the condenser 4 and the flash tank 3, different throttling orifice plate aperture combinations are automatically switched according to the refrigerant flow difference under the refrigeration working condition and the heating working condition by utilizing the corresponding relation between the liquid level heights in the condenser 4 and the flash tank 3 and the liquid inlet height of the auxiliary throttling cavity, so that different throttling effects are achieved, the throttling requirements for switching the heating working condition and the refrigeration working condition are further matched, the running performance of the unit is fully exerted, the unit continuously and reliably runs under the optimal performance, and the running efficiency of the unit is improved.
It is noted that the terminology used above is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the terms "inner" and "outer" refer to the interior and exterior relative to the profile of the respective member itself, and "plurality" refers to two or more. It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (13)
1. Throttle structure, its characterized in that includes: the main cavity body with independently locate the internal at least one supplementary throttle cavity of main cavity, the exit linkage of the main cavity body has main orifice plate, supplementary throttle cavity is equipped with the intercommunication the inlet of the main cavity body, the liquid outlet of supplementary throttle cavity is connected with supplementary orifice plate.
2. The throttling arrangement of claim 1, wherein a flow area of the liquid inlet is larger than a flow area of the auxiliary orifice plate.
3. The throttling arrangement of claim 1, wherein said primary orifice plate and said secondary orifice plate are coupled in parallel to an outlet conduit.
4. The throttling structure according to claim 1, wherein the auxiliary throttling cavity is used at least in one operating condition, and the liquid level of the main cavity in the operating condition is higher than that of the corresponding auxiliary throttling cavity.
5. The throttle structure of claim 4, wherein the secondary orifice used in each operating condition has a flow area that is the set flow area for the operating condition minus the flow area of the primary orifice.
6. The throttling structure of claim 1, wherein a liquid outlet of the auxiliary throttling cavity is connected with a plurality of auxiliary throttling orifice plates arranged in parallel, and each auxiliary throttling orifice plate is provided with a control valve for switching the on-off state of the auxiliary throttling orifice plate.
7. The throttling structure according to claim 1, wherein a plurality of auxiliary throttling cavities are distributed in the main cavity, and the liquid inlet height of each auxiliary throttling cavity is different.
8. A throttling arrangement according to any one of claims 1 to 7, wherein the throttling arrangement is provided in a heat exchanger and/or a flash tank.
9. Air conditioning unit, including: compressor, condenser and evaporator, characterized in that the condenser is provided with a throttling arrangement according to any one of claims 1 to 8.
10. The air conditioning assembly as set forth in claim 9, further comprising: the flash tank with the throttling structure of any one of claims 1 to 8, wherein the throttling structure of the condenser is connected with the flash tank through a first liquid outlet pipe, and the throttling structure of the flash tank is connected with the evaporator through a second liquid outlet pipe.
11. The air conditioning unit as claimed in claim 9, wherein the condenser and the evaporator are connected to a user side device, and refrigerant circulation directions among the compressor, the condenser and the evaporator are the same under different operation conditions.
12. The air conditioning unit as set forth in claim 11, wherein the air conditioning unit has a cooling condition and a heating condition, the auxiliary throttle cavity being used in the cooling condition, the main cavity having a liquid level height at the cooling condition higher than the liquid inlet of the auxiliary throttle cavity, the main cavity having a liquid level height at the heating condition lower than the liquid inlet of the auxiliary throttle cavity.
13. Air conditioning unit according to claim 9, characterized in that the air conditioning unit is a heat pump unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211065864.2A CN115289723A (en) | 2022-08-31 | 2022-08-31 | Throttling structure and air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211065864.2A CN115289723A (en) | 2022-08-31 | 2022-08-31 | Throttling structure and air conditioning unit |
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| Publication Number | Publication Date |
|---|---|
| CN115289723A true CN115289723A (en) | 2022-11-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211065864.2A Pending CN115289723A (en) | 2022-08-31 | 2022-08-31 | Throttling structure and air conditioning unit |
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| Country | Link |
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| CN (1) | CN115289723A (en) |
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- 2022-08-31 CN CN202211065864.2A patent/CN115289723A/en active Pending
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