CN114576448A - Carbon dioxide air conditioner heat pump system pipeline flange seal assembly - Google Patents
Carbon dioxide air conditioner heat pump system pipeline flange seal assembly Download PDFInfo
- Publication number
- CN114576448A CN114576448A CN202210171475.1A CN202210171475A CN114576448A CN 114576448 A CN114576448 A CN 114576448A CN 202210171475 A CN202210171475 A CN 202210171475A CN 114576448 A CN114576448 A CN 114576448A
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- China
- Prior art keywords
- connecting block
- heat pump
- carbon dioxide
- pump system
- sealing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
- B60H1/00557—Details of ducts or cables
- B60H1/00571—Details of ducts or cables of liquid ducts, e.g. for coolant liquids or refrigerants
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
The invention relates to a pipeline connecting flange sealing assembly of a carbon dioxide air-conditioning heat pump system, which comprises a first connecting block and a second connecting block, wherein the first connecting block is provided with a protruding part, the second connecting block is provided with a groove part, and the protruding part is positioned in the groove part; a sealing gasket is arranged between the protruding part and the groove part, and the sealing gasket is a cap-shaped gasket with a hole in the middle and is sleeved on the protruding part. The invention combines the existing sealing assembly consisting of two parts of elements into a whole to form a cap-shaped gasket, the cap-shaped gasket can be conveniently sleeved on the protruding part when being installed, and after the cap-shaped gasket is assembled and fixed by press fitting, the cap-shaped gasket is tightly pressed between the first connecting block and the second connecting block to form an effective sealing structure, thereby greatly improving the assembly efficiency of products and simplifying the structure of the sealing gasket assembly.
Description
Technical Field
The invention relates to spare and accessory parts of a vehicle air conditioning system, in particular to a pipeline connecting flange sealing assembly of a carbon dioxide air conditioning heat pump system.
Background
At present, the working refrigerant medium of the automobile air conditioning system gradually adopts CO2，CO2Has a high critical pressure (Pc: 7.38MPa) and a low critical temperature (Tc: 31.25 ℃ C.), and is satisfactoryThe refrigerating system using carbon dioxide as a refrigerant has to work in a transcritical region, the working pressure exceeds the critical pressure, and the working pressure is much higher than that of the conventional automobile air-conditioning system. Typically, R744 (CO)2) The working pressure of the air-conditioning heat pump system reaches 170bar at most, and the working temperature is minus 40 ℃ to 170 ℃.
The flange connecting assembly is needed to be used for pipeline connection in an automobile air conditioning system, and the existing flange sealing assembly comprises a male end module, a female end module, a sealing gasket, a plastic fixing piece and the like. Patent CN 109519621B discloses a device for fluid-tightly connecting pipelines, which respectively has a first and a second connecting block connected with the pipelines, wherein the first and the second connecting block respectively form a sealing surface on one side oriented to the other connecting block and are connected with each other through at least one fixing mechanism. The device has an intermediate element arranged between the connecting pieces, which has a retaining element and a second sealing element. A first sealing element is arranged in the holding element and between the sealing surfaces of the connecting piece. The holding element is formed with a hollow cylindrical wall having a first edge and a second edge. The second sealing element is firmly connected to the retaining element at a second edge of the retaining element. The intermediate element has a recess which extends from a first end, which is formed at the outer side of the second sealing element, to a second end. The first end is formed in a conical shape, wherein the oppositely disposed side walls of the recess bear against one another on the outer side of the sealing element.
Patent CN110816202A discloses a fastening system for a heat resistant cycle of a refrigerant fitting, involving a block fitting assembly including a first block having a first fastener aperture formed therethrough, a second block having a second fastener aperture formed therethrough and axially aligned with the first fastener aperture, and a fastener extending through the first fastener aperture and the second fastener aperture to couple the first block to the second block. The block-fitting assembly includes a thermal expansion compliance feature in the form of at least one of: the inner surface of the second block defining the second fastener aperture includes an axially extending non-threaded portion adjacent the threaded portion of the second fastener aperture, or the fastener includes a neck portion having an outer diameter less than the minor diameter of the thread of the threaded portion of the fastener.
However, in the device for connecting pipelines in a fluid-tight manner disclosed in patent CN 109519621B, the intermediate element 5 is used to fix the first sealing element 4, the structure of the intermediate element 5 is complex, the manufacturing cost is high, the assembly steps are complicated, and the sealing effect is not good. The sealing element 80 of the fitting assembly disclosed in CN110816202A includes a metal part 81 surrounded by an elastic part 82, and the elastic part 82 is made of rubber or the like, and is not stable enough under high temperature and high pressure, and there is still a certain risk of leakage.
Disclosure of Invention
The invention aims to solve the problems and provide a pipeline connecting flange sealing assembly of a carbon dioxide air conditioning heat pump system.
The purpose of the invention is realized by the following technical scheme:
a pipeline connecting flange sealing assembly of a carbon dioxide air-conditioning heat pump system comprises a first connecting block and a second connecting block,
the first connection block having a first fluid aperture, the first connection block having a protrusion at an end of the first fluid aperture,
the second connecting block has a second fluid port corresponding to the first fluid port, the second connecting block has a groove portion matching the protrusion at an end of the second fluid port,
the protruding portion and the groove portion are respectively arranged on the side surfaces of the first connecting block and the second connecting block facing each other, the first connecting block and the second connecting block are connected with each other through at least one fixing mechanism, and the protruding portion is located in the groove portion;
a sealing gasket is arranged between the protruding part and the groove part, and the sealing gasket is a cap-shaped gasket with a hole in the middle and is sleeved on the protruding part.
The invention has the main innovation point of improving a sealing gasket, and combines the existing sealing assembly (comprising an elastic element) consisting of two parts of elements into a whole to form a cap-shaped gasket, the cap-shaped sealing gasket can be conveniently sleeved on a protruding part when being installed, and after the cap-shaped sealing gasket is assembled and fixed by press fitting, the cap-shaped sealing gasket is tightly pressed between a first connecting block and a second connecting block to form an effective sealing structure.
Furthermore, the sealing gasket comprises a bottom plate, a side wall plate vertically connected with the bottom plate and an opening arranged in the middle of the bottom plate.
Furthermore, the side enclosing plates are provided with lug plates convenient to disassemble and assemble, and the side enclosing plates can be disassembled more easily through the lug plates.
Further, the sealing gasket is clamped and connected with the protruding part through the side coaming.
Furthermore, the sealing gasket is an integrally formed metal sheet, and the hardness of the gasket core part is less than 50HV 0.1.
Furthermore, the end surfaces of the protruding portion and the groove portion are respectively provided with an annular convex tooth protruding out of the end surface of the protruding portion, after the first connecting block and the second connecting block are assembled, under the extrusion effect, the annular convex tooth is pressed into the sealing gasket to achieve sealing, only one annular convex tooth is designed, the pressing depth and the pressing force of the annular convex tooth are improved, and therefore a better sealing effect is achieved.
Furthermore, a guide positioning hole and a guide positioning column are arranged between the first connecting block and the second connecting block.
Further, the first connecting block and the second connecting block are connected through a threaded screw fastener.
Further, the first connecting block and the second connecting block are connected with a pipeline, and the pipeline is a pipeline of a refrigerant loop of an air conditioning system of the motor vehicle.
Furthermore, the first connecting block and the second connecting block are metal aluminum blocks.
Compared with the prior art, the invention has the following beneficial effects:
the sealing assembly is made into a cap-shaped gasket, and the cap-shaped sealing gasket is sleeved on the tubular protruding part of the first connecting block when being installed.
Drawings
FIG. 1 is a schematic view of the overall structure of a pipe connection flange sealing assembly of an air-conditioning heat pump system according to the present invention;
FIG. 2 is a schematic view of a gasket seal;
FIG. 3 is a schematic sectional view taken along line A-A in FIG. 2;
FIGS. 4 and 5 are comparison graphs of different pressing depths of different areas of a single ring seal tooth and a double ring seal tooth; a denotes a first connection block (male plate); b denotes a second connecting block (female presser).
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Referring to fig. 1, a carbon dioxide air conditioning heat pump system pipe connection flange sealing assembly includes a first connection block 1 and a second connection block 2, the first connection block 1 having a first fluid orifice 12, the first connection block 1 having a protrusion 11 at an end of the first fluid orifice 12, the second connection block 2 having a second fluid orifice 22 corresponding to the first fluid orifice 12, the second connection block 2 having a groove portion 21 at an end of the second fluid orifice 22 matching with the protrusion 11, the protrusion 11 and the groove portion 21 being respectively disposed at sides of the first connection block 1 and the second connection block 2 facing each other, the first connection block 1 and the second connection block 2 being connected to each other by at least one fixing mechanism, the protrusion 11 being located in the groove portion 21; a sealing gasket 3 is arranged between the protruding part 11 and the groove part 21.
As shown in fig. 1 and 2, the sealing gasket 3 is a cap-shaped gasket with a hole in the middle, and is sleeved on the protrusion 11. The sealing gasket 3 comprises a bottom plate 31, side coamings 32 vertically connected with the bottom plate 31 and an opening 33 opened in the middle of the bottom plate 31, wherein the thickness of the bottom plate 31 is larger than that of the side coamings 32. The side panels 32 are provided with lugs 34 which are easy to assemble and disassemble, and the lugs can be used for easier disassembly. The sealing gasket 3 is tightly connected with the protruding part 11 through the side coaming 32, and can be fixed through press fitting during installation.
In a preferred embodiment, the end surfaces of the protruding portion 11 and the groove portion 21 are respectively provided with an annular convex tooth protruding from the end surface, and the annular convex tooth is pressed into the sealing gasket 3 to realize sealing under the pressing action after the first connecting block 1 and the second connecting block 2 are assembled. Compared with a double-annular convex tooth structure, the single-annular convex tooth structure has better effect. Fig. 4 and 5 are comparison graphs of the penetration depth of different areas of the single ring seal tooth and the double ring seal tooth, and it can be seen that the penetration depth of the single ring-shaped convex tooth is deeper.
In the embodiment of the invention, the sealing gasket 3 is an integrally formed metal sheet, the hardness of the gasket core part is less than 50HV0.1, and the hardness is lower than that of the annular convex teeth. The invention avoids using non-metal elements and greatly enhances the reliability. A guide positioning hole and a guide positioning column are arranged between the first connecting block 1 and the second connecting block 2, the guide positioning hole and the guide positioning column are arranged at one end far away from the fluid orifice, and the two connecting blocks are connected better through the guide positioning hole and the guide positioning column.
First connecting block 1 is the metal aluminium piece with second connecting block 2, is connected through threaded screw rod fastener between first connecting block 1 and the second connecting block 2, passes the connecting hole that has the screw hole through the screw rod fastener, realizes first connecting block 1 and second connecting block 2's zonulae occludens. When in use, the first connecting block 1 and the second connecting block 2 are connected with a pipeline, wherein the pipeline is a pipeline of a refrigerant loop of an air conditioning system of a motor vehicle and is used for fluidly connecting two fluid conveying components of an associated fluid system.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. A pipeline connecting flange sealing assembly of a carbon dioxide air-conditioning heat pump system comprises a first connecting block (1) and a second connecting block (2),
the first connection block (1) having a first fluid aperture (12), the first connection block (1) having a protrusion (11) at an end of the first fluid aperture (12),
the second connecting block (2) has a second fluid orifice (22) corresponding to the first fluid orifice (12), the second connecting block (2) has a groove portion (21) matching the protrusion portion (11) at an end of the second fluid orifice (22),
the protruding portion (11) and the groove portion (21) are respectively arranged on the side surfaces of the first connecting block (1) and the second connecting block (2) facing each other, the first connecting block (1) and the second connecting block (2) are connected with each other through at least one fixing mechanism, and the protruding portion (11) is located in the groove portion (21);
the sealing structure is characterized in that a sealing gasket (3) is arranged between the protruding portion (11) and the groove portion (21), and the sealing gasket (3) is a cap-shaped gasket with a hole in the middle and is sleeved on the protruding portion (11).
2. A carbon dioxide air conditioning heat pump system pipe connection flange seal assembly according to claim 1, characterized in that the sealing gasket (3) comprises a bottom plate (31), side enclosing plates (32) vertically connected with the bottom plate (31) and an opening (33) opened in the middle of the bottom plate (31).
3. The carbon dioxide air conditioning heat pump system pipe connection flange seal assembly according to claim 2, characterized in that the side enclosing plates (32) are provided with lugs (34) which are convenient to disassemble and assemble.
4. A carbon dioxide air conditioning heat pump system pipe connection flange seal assembly according to claim 2, characterized in that the sealing gasket (3) is snap-fitted with the protruding part (11) through the side enclosing plate (32).
5. The pipe connection flange seal assembly of the carbon dioxide air conditioning heat pump system according to claim 1, wherein the sealing gasket (3) is an integrally formed metal sheet, and the gasket core hardness is less than 50HV 0.1.
6. The carbon dioxide air conditioning heat pump system pipeline connecting flange sealing assembly according to claim 1, wherein the end surfaces of the protruding portion (11) and the recessed portion (21) are respectively provided with an annular convex tooth protruding from the end surface, and after the first connecting block (1) and the second connecting block (2) are assembled, the annular convex tooth is pressed into the sealing gasket (3) under the action of extrusion to realize sealing.
7. The pipeline connecting flange sealing assembly of the carbon dioxide air conditioning heat pump system according to claim 1, wherein a guiding positioning hole and a guiding positioning column are arranged between the first connecting block (1) and the second connecting block (2).
8. The pipeline connecting flange sealing assembly of the carbon dioxide air conditioning heat pump system according to claim 1, characterized in that the first connecting block (1) and the second connecting block (2) are connected through a threaded screw fastener.
9. The carbon dioxide air conditioning heat pump system pipeline connecting flange sealing assembly according to claim 1, wherein the first connecting block (1) and the second connecting block (2) are connected with a pipeline, and the pipeline is a pipeline of a refrigerant loop of an air conditioning system of a motor vehicle.
10. The carbon dioxide air conditioning heat pump system pipeline connecting flange sealing assembly according to claim 1, wherein the first connecting block (1) and the second connecting block (2) are metal aluminum blocks.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210171475.1A CN114576448A (en) | 2022-02-24 | 2022-02-24 | Carbon dioxide air conditioner heat pump system pipeline flange seal assembly |
| PCT/CN2022/121162 WO2023159939A1 (en) | 2022-02-24 | 2022-09-26 | Carbon dioxide air conditioner heat pump system pipeline connection flange sealing assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210171475.1A CN114576448A (en) | 2022-02-24 | 2022-02-24 | Carbon dioxide air conditioner heat pump system pipeline flange seal assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114576448A true CN114576448A (en) | 2022-06-03 |
Family
ID=81773362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210171475.1A Pending CN114576448A (en) | 2022-02-24 | 2022-02-24 | Carbon dioxide air conditioner heat pump system pipeline flange seal assembly |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114576448A (en) |
| WO (1) | WO2023159939A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023159939A1 (en) * | 2022-02-24 | 2023-08-31 | 上海众源燃油分配器制造有限公司 | Carbon dioxide air conditioner heat pump system pipeline connection flange sealing assembly |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001099594A (en) * | 1999-09-30 | 2001-04-13 | Showa Alum Corp | Joint member for heat exchanger |
| US6834893B2 (en) * | 2001-11-01 | 2004-12-28 | Visteon Global Technologies, Inc. | Peanut fittings for CO2 air conditioning systems |
| DE10261887B4 (en) * | 2002-12-20 | 2005-05-12 | Visteon Global Technologies, Inc., Dearborn | pipe coupling |
| DE50303104D1 (en) * | 2003-02-05 | 2006-06-01 | Contitech Kuehner Gmbh & Cie Kg | Connection arrangement for refrigerant pipes |
| DE102006029645B4 (en) * | 2006-06-28 | 2010-02-04 | Hansa Automotive Gmbh & Co. Kg | Refrigerant line, especially for powered by CO2 automotive air conditioning systems |
| EP2058564A1 (en) * | 2007-11-12 | 2009-05-13 | Carl Freudenberg KG | Seal assembly, seal assembly gasket and use |
| CN109424808A (en) * | 2017-08-31 | 2019-03-05 | 杭州三花研究院有限公司 | Pipe joint and heat pump system |
| CN108561644A (en) * | 2018-06-27 | 2018-09-21 | 上海众源燃油分配器制造有限公司 | A kind of high-pressure air conditioner pipe pressing plate for sealing structure |
| CN112572090B (en) * | 2019-09-28 | 2023-11-21 | 杭州三花研究院有限公司 | Pipeline joint assembly |
| CN114576448A (en) * | 2022-02-24 | 2022-06-03 | 上海众源燃油分配器制造有限公司 | Carbon dioxide air conditioner heat pump system pipeline flange seal assembly |
-
2022
- 2022-02-24 CN CN202210171475.1A patent/CN114576448A/en active Pending
- 2022-09-26 WO PCT/CN2022/121162 patent/WO2023159939A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023159939A1 (en) * | 2022-02-24 | 2023-08-31 | 上海众源燃油分配器制造有限公司 | Carbon dioxide air conditioner heat pump system pipeline connection flange sealing assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023159939A1 (en) | 2023-08-31 |
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