WO2022166855A1 - Gas collecting pipe assembly and air conditioning device - Google Patents
Gas collecting pipe assembly and air conditioning device Download PDFInfo
- Publication number
- WO2022166855A1 WO2022166855A1 PCT/CN2022/074847 CN2022074847W WO2022166855A1 WO 2022166855 A1 WO2022166855 A1 WO 2022166855A1 CN 2022074847 W CN2022074847 W CN 2022074847W WO 2022166855 A1 WO2022166855 A1 WO 2022166855A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas collecting
- pipe
- branch
- branch pipe
- collecting pipe
- Prior art date
Links
- 238000004378 air conditioning Methods 0.000 title abstract description 5
- 238000009987 spinning Methods 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 6
- 239000012530 fluid Substances 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/025—Stamping using rigid devices or tools for tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
-
- 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
-
- 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
- F25B41/40—Fluid line arrangements
- F25B41/42—Arrangements for diverging or converging flows, e.g. branch lines or junctions
Definitions
- the present application relates to the technical field of refrigeration, and in particular, to a gas collecting pipe assembly and air conditioning equipment.
- the gas collecting pipe assembly generally includes a main gas collecting pipe and a branch pipe main body connected to one end of the main gas collecting pipe, and the branch pipe body can divide the fluid medium in the main gas collecting pipe.
- the main gas collecting pipe and the main body of the branch pipe are welded, but during the welding process, false welding or missing welding is likely to occur, which leads to the risk of leakage of the gas collecting pipe assembly.
- the application provides a gas collecting pipe assembly, the gas collecting pipe assembly comprises a main gas collecting pipe and a branch pipe main body connected to one end of the main gas collecting pipe, the branch pipe body and the main gas collecting pipe are integrally formed; and the inner diameter of the branch pipe body is larger than the inner diameter of the main gas collecting pipe.
- the main gas collecting pipe is formed by spinning to form the branch pipe main body, and the wall thickness of the branch pipe main body is smaller than the wall thickness of the main gas collecting pipe.
- the process of spinning is mature and the processing efficiency is high, which can improve the processing efficiency of the entire gas collecting pipe assembly, and the main body of the branch pipe processed by spinning has higher precision.
- the main gas collecting pipe is formed by cold stamping to form the branch pipe body, and the wall thickness of the branch pipe body is equal to the wall thickness of the main gas collecting pipe.
- the structure of the main body of the manifold is firmer, and the main body of the manifold is not easily deformed due to impact during the use of the gas collecting pipe assembly, thereby improving the service life of the gas collecting pipe assembly.
- the pipe branch body is provided with a plurality of pipe interfaces, and the pipe interfaces and the pipe branch body are integrally formed. In this way, there is no connection gap between the main body and the pipe interface, and there is no leakage problem when the fluid medium flows between the main body and the pipe interface. Therefore, the sealing degree of the entire gas collecting pipe assembly is greatly improved.
- the pipe interface includes a first interface and a second interface, the first interface is provided on the end of the branch pipe body away from the main gas collecting pipe, and the second interface is provided on the side wall of the branch pipe body.
- the second interface is formed by opening a hole in the side wall of the branch main body and flanging the hole at the opening.
- the main body of the branch pipe and the main gas collecting pipe are connected by a conical transition structure, and the inclination angle of the outer surface of the conical transition structure is less than or equal to 45°.
- the number of the first ports is multiple, and the arrangement in this way is favorable for connecting a larger number of gas collecting branch pipes to the end of the branch main body.
- the number of the second ports is multiple, and this arrangement is beneficial to the side wall of the branch pipe main body being connected to a larger number of gas collecting branch pipes.
- the gas collecting pipe assembly further includes a plurality of gas collecting branch pipes, and the plurality of gas collecting branch pipes are correspondingly connected to a plurality of pipe interfaces;
- the gas collecting branch pipe includes a first branch pipe;
- the first branch pipe is inserted into the first interface,
- the inner wall of the first interface is provided with a first positioning bump, and the first branch pipe stops at the first positioning bump.
- the gas collecting branch pipe includes a second branch pipe, the second branch pipe is inserted into the second port, and the outer wall of the second branch pipe is provided with a second positioning bump, and the second port stops at the second port. Locate bumps. In this way, the depth of inserting the second branch pipe into the second interface can be limited by the second positioning protrusion, thereby improving the assembly accuracy of the second branch pipe and the branch pipe main body.
- the present application further provides an air conditioner, the air conditioner includes the air collecting pipe assembly described in any one of the above embodiments.
- the branch pipe body and the main gas collecting pipe are integrally formed, and the integral molding refers to the one-time processing and forming of the branch pipe main body and the main gas collecting pipe, that is, the branch pipe main body and the main gas collecting pipe are not processed separately and then connected to each other. together.
- the integral molding refers to the one-time processing and forming of the branch pipe main body and the main gas collecting pipe, that is, the branch pipe main body and the main gas collecting pipe are not processed separately and then connected to each other. together.
- the gas collecting pipe assembly provided by the present application solves the problem of leakage risk of the gas collecting pipe assembly.
- FIG. 1 is a schematic structural diagram of a gas collecting pipe assembly according to an embodiment of the present application.
- FIG. 2 is an enlarged view of the position A shown in FIG. 1 .
- a component when referred to as being “mounted on” another component, it can be directly mounted on the other component or there may also be an intervening component.
- a component When a component is considered to be “set on” another component, it may be directly set on the other component or there may be a co-existing centered component.
- a component When a component is said to be “fixed” to another component, it may be directly fixed to the other component or there may also be an intervening component.
- the present application provides a gas collecting pipe assembly
- the gas collecting pipe assembly includes a main gas collecting pipe 1, a gas collecting branch pipe 4 and a branch pipe main body 2, the branch pipe main body 2 is connected to one end of the main gas collecting pipe 1, and the branch pipe main body 2 2.
- a plurality of pipe ports 3 are provided, and a plurality of gas collecting branch pipes 4 are correspondingly connected to the plurality of pipe ports 3.
- the fluid medium enters the branch pipe main body 2 from the plurality of gas collecting branch pipes 4 through the pipe interface 3, and then the fluid medium enters the main gas collecting pipe 1 from the branch pipe main body 2 to realize the collection of the fluid medium.
- the fluid medium can also enter a plurality of gas collecting branch pipes 4 from the main gas collecting pipe 1 through the branch pipe main body 2 to realize the splitting of the fluid medium.
- the inner diameter of the branch pipe main body 2 is larger than the inner diameter of the main gas collecting pipe 1 .
- This arrangement can enlarge the installation area of the branch pipe main body 2 , which is beneficial to the installation of the gas collecting branch pipe 4 on the branch pipe main body 2 .
- the branch main body 2 and the main gas collecting pipe 1 are integrally formed, and the integral molding refers to the one-time processing and forming of the branch pipe main body 2 and the main gas collecting pipe 1, that is, the branch pipe main body 2 and the main gas collecting pipe 1 are not processed separately and then connected together.
- the gas collecting pipe assembly provided by the present application solves the problem of leakage risk of the gas collecting pipe assembly.
- the main gas collecting pipe 1 is formed by spinning to form the branch pipe main body 2 , and the wall thickness of the branch pipe main body 2 is smaller than the wall thickness of the main gas collecting pipe 1 .
- Spinning is to fix the main gas collecting pipe 1 on the mold of the spinning machine.
- the main gas collecting pipe 1 rotates with the main shaft of the machine, pressurize the main gas collecting pipe 1 with a rotary wheel or a driving rod, so that the main gas collecting pipe 1 produces partial pressure. plastic deformation.
- the inner diameter of the side wall of the main gas collecting pipe 1 is enlarged and the wall thickness is reduced after the spinning deformation, thereby forming the branch pipe main body 2 .
- the spinning process is mature and the processing efficiency is high, which can improve the processing efficiency of the entire gas collecting pipe assembly, and the branch pipe main body 2 processed by spinning has higher precision.
- the main gas collecting pipe 1 is formed by cold stamping to form the branch pipe main body 2 , and the wall thickness of the branch pipe main body 2 is equal to the wall thickness of the main gas collecting pipe 1 .
- Cold stamping is a press working method in which pressure is applied to the main gas collecting pipe 1 on a press by using a stamping die at normal temperature, so that the main gas collecting pipe 1 is plastically deformed.
- the inner diameter of the main gas collecting pipe 1 is enlarged and the total length is shortened to form the branch pipe main body 2, and the wall thickness of the formed branch pipe main body 2 is equal to the main gas collecting pipe 1 wall thickness.
- the structure of the branch pipe body 2 is firmer, and the branch pipe body 2 is not easily deformed due to impact during the use of the gas collector pipe assembly, thereby improving the service life of the gas collector pipe assembly.
- the pipe interface 3 and the branch main body 2 are integrally formed. In this way, there is no connection gap between the branch body 2 and the pipe interface 3 , and there is no leakage problem when the fluid medium circulates between the branch body 2 and the pipe interface 3 . Therefore, the sealing degree of the entire gas collecting pipe assembly is greatly improved.
- the pipe interface 3 includes a first interface 31 and a second interface 32, the first interface 31 is provided at one end of the branch main body 2 away from the main gas collecting pipe 1, and the second interface 32 is provided on the side wall of the branch main body 2 .
- the setting position of the pipe interface 3 is more flexible, and because the pipe interface 3 connects the gas collecting branch pipe 4 and the branch pipe main body 2, the setting position of the gas collecting branch pipe 4 is also more flexible, which is conducive to the flexible setting of the main gas collecting pipe assembly according to actual needs.
- the relative position of the gas collecting pipe 1 and the gas collecting branch pipe 4 is configured to control the pipe 1 a first interface 31 and a second interface 32, the first interface 31 is provided at one end of the branch main body 2 away from the main gas collecting pipe 1, and the second interface 32 is provided on the side wall of the branch main body 2 .
- the second interface 32 is formed by opening a hole in the side wall of the branch main body 2 and flanging the opening. Specifically, a hole needs to be made on the side wall of the branch body 2 first, and then the side wall of the branch body 2 in the opening area is flanged toward the outside to form the second interface 32 . In this way, the processing method of the second interface 32 is simple, and the connection between the second interface 32 and the main body 2 is more firm. However, it is not limited to this, and the side wall of the branch main body 2 in the opening area can also be flanged toward the inside to form the second interface 32 .
- the branch pipe main body 2 and the main gas collecting pipe 1 are connected by a tapered transition structure, and the inclination angle of the outer surface of the tapered transition structure is less than or equal to 45°. In this way, the connection between the branch pipe main body 2 and the main gas collecting pipe 1 is smoother.
- the number of the first interfaces 31 is multiple. Since the first interface 31 is provided at the end of the branch main body 2 away from the main gas header 1 , a plurality of first interfaces 31 can be provided at the end of the branch main body 2 , which is beneficial for the end of the branch main body 2 to be connected to a larger number of collectors. Trachea 4.
- the number of the second interfaces 32 is multiple. Since the second interface 32 is provided on the side wall of the branch main body 2 , a plurality of second interfaces 32 can be set on the side wall of the branch main body 2 , which is beneficial for the side wall of the branch main body 2 to be connected to a larger number of gas collecting branch pipes 4 . .
- the gas collecting pipe assembly further includes a plurality of gas collecting branch pipes 4, the plurality of gas collecting branch pipes 4 are correspondingly connected to a plurality of pipe interfaces 3, and the gas collecting branch pipe 4 includes a first branch pipe 41,
- the first branch pipe 41 is inserted into the first interface 31 , and the inner wall of the first interface 31 is provided with a first positioning bump (not shown), and the first branch pipe 41 stops at the first positioning bump.
- the depth of the insertion of the first branch pipe 41 into the first interface 31 can be limited by the first positioning bump, thereby improving the assembly accuracy of the first branch pipe 41 and the branch pipe main body 2 .
- the gas collecting branch pipe 4 includes a second branch pipe 42 , the second branch pipe 42 is inserted into the second interface 32 , and the outer wall of the second branch pipe 42 is provided with a second positioning protrusion. point, the second interface 32 stops at the second positioning bump. In this way, the depth of inserting the second branch pipe 42 into the second interface 32 can be limited by the second positioning protrusion, thereby improving the assembly accuracy of the second branch pipe 42 and the branch pipe main body 2 .
- the present application further provides an air conditioner, the air conditioner includes the air collecting pipe assembly described in any one of the above embodiments.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Sampling And Sample Adjustment (AREA)
- Other Air-Conditioning Systems (AREA)
- Duct Arrangements (AREA)
Abstract
Description
Claims (10)
- 一种集气管组件,其特征在于,包括主集气管以及连接于所述主集气管一端的分管主体,所述分管主体与所述主集气管一体成型;且所述分管主体的内径大于所述主集气管的内径。A gas collecting pipe assembly, characterized in that it comprises a main gas collecting pipe and a branch pipe main body connected to one end of the main gas collecting pipe, the branch pipe main body and the main gas collecting pipe are integrally formed; and the inner diameter of the branch pipe main body is larger than the The inner diameter of the main header.
- 根据权利要求1所述的集气管组件,其中,所述主集气管通过旋压形成所述分管主体,且所述分管主体的壁厚小于所述主集气管的壁厚。The gas collecting pipe assembly of claim 1, wherein the main gas collecting pipe is formed by spinning to form the branch pipe body, and the wall thickness of the branch pipe body is smaller than that of the main gas collecting pipe.
- 根据权利要求1所述的集气管组件,其中,所述主集气管通过冷冲压形成所述分管主体,且所述分管主体的壁厚等于所述主集气管的壁厚。The manifold assembly of claim 1 , wherein the main manifold body is formed by cold stamping, and the manifold body has a wall thickness equal to that of the main manifold.
- 根据权利要求1所述的集气管组件,其中,所述分管主体设有多个管接口,所述管接口与所述分管主体一体成型。The gas collecting pipe assembly according to claim 1, wherein the branch pipe body is provided with a plurality of pipe interfaces, and the pipe interfaces are integrally formed with the branch pipe body.
- 根据权利要求4所述的集气管组件,其中,所述管接口包括第一接口和第二接口,所述第一接口设于所述分管主体远离所述主集气管的一端,所述第二接口设于所述分管主体的侧壁上。The gas collecting pipe assembly according to claim 4, wherein the pipe interface comprises a first interface and a second interface, the first interface is provided at an end of the branch pipe body away from the main gas collecting pipe, the second interface The interface is arranged on the side wall of the branch main body.
- 根据权利要求5所述的集气管组件,其中,所述第二接口由所述分管主体的侧壁开孔并于开孔处翻边而形成。The gas collecting pipe assembly according to claim 5, wherein the second interface is formed by opening a hole in the side wall of the branch pipe main body and flanging the hole at the opening.
- 根据权利要求1所述的集气管组件,其中,所述分管主体和所述主集气管通过锥形过渡结构连接,所述锥形过渡结构外表面的倾斜角小于或等于45°。The gas collecting pipe assembly according to claim 1, wherein the branch pipe main body and the main gas collecting pipe are connected by a tapered transition structure, and the inclination angle of the outer surface of the tapered transition structure is less than or equal to 45°.
- 根据权利要求5所述的集气管组件,其中,所述集气管组件还包括多个集气支管,多个所述集气支管对应连接多个所述管接口,所述集气支管包括第一支管;所述第一支管插置于所述第一接口,且所述第一接口的内壁上设有第一定位凸点,所述第一支管止挡于所述第一定位凸点处。The gas collecting pipe assembly according to claim 5, wherein the gas collecting pipe assembly further comprises a plurality of gas collecting branch pipes, the plurality of the gas collecting branch pipes are correspondingly connected to the plurality of the pipe interfaces, and the gas collecting branch pipes comprise a first A branch pipe; the first branch pipe is inserted into the first interface, and the inner wall of the first interface is provided with a first positioning convex point, and the first branch pipe stops at the first positioning convex point.
- 根据权利要求8所述的集气管组件,其中,所述集气支管包括第二支管,所述第二支管插置于所述第二接口,且所述第二支管的外壁上设有第二定位 凸点,所述第二接口止挡于所述第二定位凸点处。The gas collecting pipe assembly according to claim 8, wherein the gas collecting branch pipe comprises a second branch pipe, the second branch pipe is inserted into the second interface, and an outer wall of the second branch pipe is provided with a second branch pipe A positioning bump, the second interface stops at the second positioning bump.
- 一种空调设备,其特征在于,包括如权利要求1-9任意一项所述的集气管组件。An air conditioner, characterized in that it comprises the air collecting pipe assembly according to any one of claims 1-9.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2023540472A JP2024508082A (en) | 2021-02-07 | 2022-01-28 | Air collection pipe assembly and air conditioner |
KR1020237024427A KR20230119711A (en) | 2021-02-07 | 2022-01-28 | Gas Collection Tube Assemblies and Air Conditioning Units |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202120364701.9 | 2021-02-07 | ||
CN202120364701.9U CN215063017U (en) | 2021-02-07 | 2021-02-07 | Gas collecting pipe assembly and air conditioning equipment |
Publications (1)
Publication Number | Publication Date |
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WO2022166855A1 true WO2022166855A1 (en) | 2022-08-11 |
Family
ID=79256187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/CN2022/074847 WO2022166855A1 (en) | 2021-02-07 | 2022-01-28 | Gas collecting pipe assembly and air conditioning device |
Country Status (4)
Country | Link |
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JP (1) | JP2024508082A (en) |
KR (1) | KR20230119711A (en) |
CN (1) | CN215063017U (en) |
WO (1) | WO2022166855A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN215063017U (en) * | 2021-02-07 | 2021-12-07 | 重庆华超金属有限公司 | Gas collecting pipe assembly and air conditioning equipment |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20000033609A (en) * | 1998-11-25 | 2000-06-15 | 전주범 | Apparatus for distributing refrigerant of air conditioner |
CN104776653A (en) * | 2014-01-13 | 2015-07-15 | 广东美的制冷设备有限公司 | Distributor for air conditioner and distributor component provided with distributor |
CN204923361U (en) * | 2015-08-12 | 2015-12-30 | 武汉市三花制冷部件有限公司 | Integrative structural formula air conditioner discharge |
CN206831779U (en) * | 2017-06-23 | 2018-01-02 | 王树春 | A kind of air-conditioning discharge |
CN110319502A (en) * | 2019-07-16 | 2019-10-11 | 浙江绿宇制冷配件有限公司 | Collecting pipe component |
CN215063017U (en) * | 2021-02-07 | 2021-12-07 | 重庆华超金属有限公司 | Gas collecting pipe assembly and air conditioning equipment |
-
2021
- 2021-02-07 CN CN202120364701.9U patent/CN215063017U/en active Active
-
2022
- 2022-01-28 JP JP2023540472A patent/JP2024508082A/en active Pending
- 2022-01-28 WO PCT/CN2022/074847 patent/WO2022166855A1/en active Application Filing
- 2022-01-28 KR KR1020237024427A patent/KR20230119711A/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20000033609A (en) * | 1998-11-25 | 2000-06-15 | 전주범 | Apparatus for distributing refrigerant of air conditioner |
CN104776653A (en) * | 2014-01-13 | 2015-07-15 | 广东美的制冷设备有限公司 | Distributor for air conditioner and distributor component provided with distributor |
CN204923361U (en) * | 2015-08-12 | 2015-12-30 | 武汉市三花制冷部件有限公司 | Integrative structural formula air conditioner discharge |
CN206831779U (en) * | 2017-06-23 | 2018-01-02 | 王树春 | A kind of air-conditioning discharge |
CN110319502A (en) * | 2019-07-16 | 2019-10-11 | 浙江绿宇制冷配件有限公司 | Collecting pipe component |
CN215063017U (en) * | 2021-02-07 | 2021-12-07 | 重庆华超金属有限公司 | Gas collecting pipe assembly and air conditioning equipment |
Also Published As
Publication number | Publication date |
---|---|
KR20230119711A (en) | 2023-08-16 |
CN215063017U (en) | 2021-12-07 |
JP2024508082A (en) | 2024-02-22 |
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