CN110411079B - Multistage throttling and pressure reducing device - Google Patents
Multistage throttling and pressure reducing device Download PDFInfo
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- CN110411079B CN110411079B CN201910603218.9A CN201910603218A CN110411079B CN 110411079 B CN110411079 B CN 110411079B CN 201910603218 A CN201910603218 A CN 201910603218A CN 110411079 B CN110411079 B CN 110411079B
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- flow
- limiting device
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- current limiting
- 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
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/12—Sound
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Air-Conditioning For Vehicles (AREA)
- Details Of Valves (AREA)
- Pipe Accessories (AREA)
Abstract
The invention provides a multi-stage throttling and pressure reducing device, which comprises at least two types of current limiting devices, wherein the first type of current limiting device is composed of a bending pipe with a tortuous channel, and the second type of current limiting device is composed of a current limiter with a current limiting pore plate; the at least two current limiting devices at least form a secondary current limiting device; the first-stage current limiting device adopts a first current limiting device; the second-stage current limiting device adopts a second-stage current limiting device; the fluid needing throttling and depressurization enters a multi-stage throttling and depressurization device, enters a first-stage current limiting device for throttling and depressurization, and enters a second-stage current limiting device for throttling and depressurization. According to the invention, the multistage flow limiting device is arranged, so that the flow pressure of the refrigerant is reduced finally, and less liquid flow acoustic noise can be generated in the flowing process of the refrigerant in the pipeline.
Description
Technical Field
The invention relates to the field of machinery, in particular to a multi-stage throttling and pressure reducing device.
Background
In daily life, many pipelines have the phenomenon of coexistence of gas and liquid phases. The pressure in the pipeline is easy to generate liquid flow sound when suddenly changed. In the air conditioning system, when the air conditioning system is in operation, liquid and gas in the refrigerant form a certain proportion, and the two-phase refrigerant continuously impacts and vibrates the pipeline along with the change of the operation direction of the refrigerant, so that discontinuous liquid flow sound is generated.
The pressure mutation occurs in the pipeline, so that the pressure can be generated on the air-conditioning condensing pipeline, and the service life of the air-conditioning condensing pipeline is shortened. At present, in order to avoid liquid flow noise in air conditioner operation as much as possible, cavitation is mainly avoided, but a better structure is lacking at present to reduce pressure change in the pressure flowing process of the pipeline refrigerant, so that liquid flow noise is improved.
Disclosure of Invention
In view of this, the invention provides a multi-stage throttling and depressurization device capable of increasing friction loss of refrigerant and pipelines, reducing flow velocity of the refrigerant and improving liquid flow noise, and in particular:
the invention provides a multi-stage throttling and pressure reducing device, which comprises at least two types of current limiting devices, wherein the first type of current limiting device is composed of a bending pipe with a tortuous channel, and the second type of current limiting device is composed of a current limiter with a current limiting pore plate; the multi-stage throttling and depressurization device at least comprises a secondary current limiting device; the first-stage current limiting device adopts a first current limiting device; the second-stage current limiting device adopts a second-stage current limiting device; the fluid needing throttling and depressurization enters a multi-stage throttling and depressurization device, enters a first-stage current limiting device for throttling and depressurization, and enters a second-stage current limiting device for throttling and depressurization.
It may be further preferred that the multi-stage throttling step-down device further comprises a third stage flow limiting device disposed after the second stage flow limiting device, the third stage flow limiting device employing the first type of flow limiting device.
It may be further preferred that the second flow limiting device comprises a flow limiter cavity, wherein an inlet is formed at the upper end of the flow limiter cavity, an outlet is formed at the lower end of the flow limiter cavity, and the flow limiting orifice plate is arranged in the cavity and comprises a first flow limiting orifice plate forming 0-90 degrees with the vertical axis of the flow limiter cavity and a second flow limiting orifice plate forming-90-0 degrees with the vertical axis of the flow limiter cavity.
It may be further preferred that the first flow restriction means employs a labyrinth tortuous path.
It may be further preferable that the first type of flow restriction device as the first stage flow restriction device is a multi-fold bent pipe formed by a positive U-shaped bent pipe and an inverted U-shaped bent pipe, and the first type of flow restriction device as the third stage flow restriction device is a multi-fold bent pipe formed by a positive U-shaped bent pipe.
The invention also provides an air conditioner outdoor unit which is provided with a liquid collecting pipe, and the outlet side of the liquid collecting pipe is provided with the multi-stage throttling and pressure reducing device.
According to the invention, two types of flow limiting devices are arranged, a bending pipe is arranged in the first flow limiting device to provide a flow area for the refrigerant, so that friction loss is increased, the flow velocity of the refrigerant is reduced, the pressure of the refrigerant is primarily reduced, and a flow limiting pore plate is arranged in the second flow limiting device, so that the resistance of the refrigerant in the flowing process is fully increased, and the secondary pressure reduction of the refrigerant is realized; through setting up multistage current limiter, reduce the flow pressure of refrigerant finally, make it can produce less liquid stream sound noise in the flow process in the pipeline.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely examples of the present disclosure and other drawings may be made from these drawings by one of ordinary skill in the art without inventive effort.
FIG. 1 is a schematic diagram of a multi-stage throttling and depressurization device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a second stage flow restrictor device according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a flow restrictor orifice plate structure in accordance with an embodiment of the present invention;
in the figure:
1-a condenser; 2-a liquid collecting pipe; 3-a first connection port; 4-a first stage flow restriction device; 5-a second connection port; 6-a flow restrictor; 61-restrictor inlet; 62-a first restriction orifice plate; 621-restricting orifice; 63-a second restriction orifice; 64-restrictor outlet; 65-restrictor cavity; 7-a third connection port; 8-a third stage flow restriction device; 9-fourth connection port; 10-a condenser outlet pipe; 11-a throttle device; 12-valve
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" generally includes at least two, but does not exclude the case of at least one.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or system comprising such elements.
According to the invention, the multistage flow limiting device is arranged in the refrigerant flow pipeline, two types of flow limiting devices are mainly arranged in the flow limiting device, a bending pipe is arranged in the first flow limiting device to provide a flow area for the refrigerant, so that friction loss is increased, the flow velocity of the refrigerant is reduced, the pressure of the refrigerant is primarily reduced, a flow limiting pore plate is arranged in the second flow limiting device, the resistance of the refrigerant in the flowing process is fully increased, and the secondary depressurization of the refrigerant is realized; through setting up multistage current limiter, reduce the flow pressure of refrigerant finally, make it can produce less liquid stream sound noise in the flow process in the pipeline. For better explanation of the invention, the application of the three-stage throttling and depressurization device in the liquid collecting pipe of the outdoor unit of the air conditioner is explained.
Example 1:
the embodiment provides a multi-stage throttling and pressure reducing device, which comprises at least two types of flow limiting devices, wherein the first type of flow limiting device is composed of a bending pipe with a tortuous channel, and the second type of flow limiting device is composed of a flow limiter 6 with a flow limiting pore plate; the multi-stage throttling and pressure reducing device at least comprises a second-stage current limiting device, wherein the first-stage current limiting device 4 adopts a first current limiting device, and the second-stage current limiting device 5 adopts a second current limiting device; the fluid needing throttling and depressurization enters a multi-stage throttling and depressurization device, enters a first-stage current limiting device 4 for throttling and depressurization, and enters a second-stage current limiting device 5 for throttling and depressurization. In order to better reduce the flow rate of the refrigerant and increase the resistance in the process of flowing the refrigerant, the multi-stage throttling and depressurization device further comprises a third-stage flow limiting device 8 arranged behind the second-stage flow limiting device 5, and the third-stage flow limiting device 8 adopts a first-type flow limiting device. The three-stage flow limiting device is arranged in the refrigerant flow pipeline, so that the reduction of the refrigerant flow velocity can be better realized, the cavitation phenomenon is avoided, and the generation of liquid flow sound is reduced.
Preferably, the first type of flow-limiting device adopts a labyrinth tortuous channel, preferably, the first type of flow-limiting device serving as the first stage of flow-limiting device 4 is a multi-fold bent pipe formed by a positive U-shaped bent pipe and an inverted U-shaped bent pipe, and the first type of flow-limiting device serving as the third stage of flow-limiting device 8 is a folded bent pipe formed by the positive U-shaped bent pipe. The first-stage flow limiting device 4 and the third-stage flow limiting device 8 provide enough flowing areas for the refrigerant through the labyrinth type tortuous channels, friction loss is increased, flow velocity of the refrigerant is reduced, the liquefying time in the condenser 1 is prolonged because of the reduction of the flow velocity after the gaseous refrigerant reenters the condenser 1, the liquid refrigerant proportion of the condenser 1 is increased, the gaseous refrigerant proportion is reduced, the gas-liquid phase proportion of the condenser 1 is changed, and then liquid flow sound generated in the liquefying process of the gaseous refrigerant in the condenser 1 is improved.
It may be further preferred that the first-stage flow restriction 4 and the third-stage flow restriction 8 are integrally formed with the header 2, and it may be further preferred that the first-stage flow restriction 4 and the third-stage flow restriction 8 are independently formed, and that the first-stage flow restriction 4 and the third-stage flow restriction 8 are welded to the header 2, which is referred to herein as braze welding.
Preferably, the second flow limiting device comprises a flow limiter cavity 65, wherein a flow limiter inlet 61 is formed at the upper end of the flow limiter cavity 65, a flow limiter outlet 64 is formed at the lower end of the flow limiter cavity, a flow limiting orifice plate is arranged in the flow limiter cavity 65 and comprises a first flow limiting orifice plate 62 and a second flow limiting orifice plate 63, and a flow limiting orifice 621 is arranged on the flow limiting orifice plate. It may be further preferred that the first restriction orifice plate 62 and the second restriction orifice plate 63 disposed in the restrictor cavity 65 may be formed with an angle. Preferably, the second flow limiting orifice plate 62 and the second flow limiting orifice plate 63 form an angle ranging from 75 degrees to 105 degrees, so that the friction loss is increased, the flow velocity of the refrigerant is reduced, the pressure of the refrigerant is reduced, and the second flow limiting orifice plate 62 and the second flow limiting orifice plate 63 form an angle of 90 degrees, namely the second flow limiting orifice plate 62 and the second flow limiting orifice plate 63 are vertically arranged in the flow limiter cavity 65.
In this embodiment, the flow rate of the refrigerant is primarily reduced by the arrangement of the first-stage flow limiting device 4, the friction loss in the refrigerant flowing process is increased by the first flow limiting orifice plate 62 and the second flow limiting orifice plate 63 in the second-stage flow limiting device 5, the flow rate of the refrigerant is reduced, the flow pressure of the refrigerant is further reduced by the third-stage flow limiting device 8, and the flow sound generated in the liquefaction process of the refrigerant in the condenser 1 is improved.
Example 2:
the present embodiment provides an air-conditioning outdoor unit to which the multi-stage throttling and pressure reducing device of embodiment 1 is applied, wherein the multi-stage throttling and pressure reducing device of embodiment 1 is provided on the outlet side of the liquid collecting pipe 2, and the first-stage flow limiting device and the third-stage flow limiting device 8 are preferably formed independently.
The liquid collecting pipe 2 is connected with the condenser 1, one end of the first-stage flow limiting device 4 is formed into a first connecting port 3 and welded with one end of the liquid collecting pipe 2, and the other end of the first-stage flow limiting device 4 is formed into a second connecting port and connected with a flow limiter inlet 61 of the flow limiter 6; one end of the third-stage restrictor 6 forms a third connection port 7 and is connected with a restrictor outlet 64 of the restrictor 6, and the other end of the third restrictor 6 forms a fourth connection port 9 and is connected with the condenser 1; the gas and the liquid flow out through the condenser exit tube 10, a throttling device 11 is arranged on the condenser exit tube 10 to control the flow of the gas and the liquid, and a valve 12 is also arranged on the condenser exit tube to realize the outflow control of the gas and the liquid.
The air conditioner outdoor unit provided by the embodiment is not easy to generate liquid flow sound when being started, and can provide better experience for users.
The structure of the multi-stage throttling and pressure reducing device in this embodiment is described in embodiment 1, and will not be described here again.
In summary, the multistage throttling and depressurization device provided by the invention has the advantages that the multistage flow limiting device is arranged, so that the flow speed of the fluid is reduced in the flowing process of the fluid in the pipeline, the friction loss of the fluid is increased, the flowing resistance of the fluid in the flowing process is increased, the noise generated by the flowing of the fluid in the pipeline is further reduced, and better experience is provided for users.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that this disclosure is not limited to the particular arrangements, instrumentalities and methods of implementation described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (1)
1. An air condensing units, characterized by, including multistage throttle depressurization device, multistage throttle depressurization device:
comprises at least two flow-limiting devices, wherein the first flow-limiting device is composed of a bending pipe with a tortuous channel, and the second flow-limiting device is composed of a flow limiter (6) with a flow-limiting pore plate;
the multi-stage throttling and depressurization device at least comprises a secondary current limiting device;
the first-stage current limiting device (4) adopts a first type of current limiting device;
the second-stage current limiting device (5) adopts a second-stage current limiting device;
the fluid needing throttling and depressurization enters a multi-stage throttling and depressurization device, firstly enters a first-stage current limiting device (4) for throttling and depressurization, and then enters a second-stage current limiting device (5) for throttling and depressurization;
the multistage throttling and depressurization device further comprises a third-stage current limiting device (8) arranged behind the second-stage current limiting device (5), and the third-stage current limiting device (8) adopts a first current limiting device;
the first flow-limiting device adopts a labyrinth type tortuous channel;
the first type of current limiting device used as the first-stage current limiting device (4) is a multi-fold bent pipe formed by a positive U-shaped bent pipe and an inverted U-shaped bent pipe, and the first type of current limiting device used as the third-stage current limiting device (8) is a folded bent pipe formed by a positive U-shaped bent pipe;
the second flow limiting device comprises a flow limiting cavity (65), wherein an inlet is formed at the upper end of the flow limiting cavity (65), an outlet is formed at the lower end of the flow limiting cavity, and the flow limiting orifice plate is arranged in the flow limiting cavity (65) and comprises a first flow limiting orifice plate (62) forming 0-90 degrees with the vertical axis of the flow limiting cavity (65) and a second flow limiting orifice plate (63) forming-90-0 degrees with the vertical axis of the flow limiting cavity (65);
the air conditioner outdoor unit is provided with a liquid collecting pipe, the liquid collecting pipe is connected with the condenser, one end of the first-stage flow limiting device is connected with one end of the liquid collecting pipe, and the other end of the first-stage flow limiting device is connected with a second connection port and a flow limiter inlet of the flow limiter; one end of the third-stage flow limiting device is provided with a third connecting port which is connected with a flow limiter outlet of the flow limiter, and the other end of the third-stage flow limiting device is provided with a fourth connecting port which is connected with the condenser.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910603218.9A CN110411079B (en) | 2019-07-05 | 2019-07-05 | Multistage throttling and pressure reducing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910603218.9A CN110411079B (en) | 2019-07-05 | 2019-07-05 | Multistage throttling and pressure reducing device |
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| CN110411079A CN110411079A (en) | 2019-11-05 |
| CN110411079B true CN110411079B (en) | 2023-07-18 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6237677B1 (en) * | 1999-08-27 | 2001-05-29 | Delphi Technologies, Inc. | Efficiency condenser |
| CN101592423A (en) * | 2008-05-26 | 2009-12-02 | 海尔集团公司 | A kind of flow path structure of air conditioning outdoor machine |
| CN103912322A (en) * | 2014-04-12 | 2014-07-09 | 国家电网公司 | Oblique-flow plate type direct air-cooling condensate water energy dissipating device |
| CN104975924A (en) * | 2015-07-31 | 2015-10-14 | 云南大红山管道有限公司 | Widely-applied silencer |
| CN109723926A (en) * | 2019-01-28 | 2019-05-07 | 西南石油大学 | A kind of combined type Gas Exhausting Muffle |
| CN210832639U (en) * | 2019-07-05 | 2020-06-23 | 珠海格力电器股份有限公司 | Multi-stage throttling and pressure reducing device and air conditioner outdoor unit adopting same |
-
2019
- 2019-07-05 CN CN201910603218.9A patent/CN110411079B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6237677B1 (en) * | 1999-08-27 | 2001-05-29 | Delphi Technologies, Inc. | Efficiency condenser |
| CN101592423A (en) * | 2008-05-26 | 2009-12-02 | 海尔集团公司 | A kind of flow path structure of air conditioning outdoor machine |
| CN103912322A (en) * | 2014-04-12 | 2014-07-09 | 国家电网公司 | Oblique-flow plate type direct air-cooling condensate water energy dissipating device |
| CN104975924A (en) * | 2015-07-31 | 2015-10-14 | 云南大红山管道有限公司 | Widely-applied silencer |
| CN109723926A (en) * | 2019-01-28 | 2019-05-07 | 西南石油大学 | A kind of combined type Gas Exhausting Muffle |
| CN210832639U (en) * | 2019-07-05 | 2020-06-23 | 珠海格力电器股份有限公司 | Multi-stage throttling and pressure reducing device and air conditioner outdoor unit adopting same |
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| Publication number | Publication date |
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| CN110411079A (en) | 2019-11-05 |
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