CN211550846U - Air conditioner hose assembly meeting novel refrigerant - Google Patents
Air conditioner hose assembly meeting novel refrigerant Download PDFInfo
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- CN211550846U CN211550846U CN201921500385.2U CN201921500385U CN211550846U CN 211550846 U CN211550846 U CN 211550846U CN 201921500385 U CN201921500385 U CN 201921500385U CN 211550846 U CN211550846 U CN 211550846U
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Abstract
The utility model discloses a satisfy air conditioner hose sub-assembly of novel refrigerant, include air conditioner hose and fix the metal joint at air conditioner hose both ends, metal joint is including lining core, aluminium cover and rubber seal, inside and the air conditioner hose connection of lining core one end insertion air conditioner hose to be equipped with sealed recess on the outer wall of this end, be equipped with in this sealed recess rubber seal, this rubber seal are located between the outer wall of lining core and the air conditioner hose inner wall, the cover is equipped with on the tip outer wall that air conditioner hose and lining core are connected aluminium cover, this aluminium cover is through withholding back locking air conditioner hose tip between lining core and aluminium cover. The utility model discloses have excellent comprehensive properties such as resistant permeability, resistant high and low temperature, anti bending property, low inflation, anti vibration and anti pulse, can be used to carry the novel environmental protection refrigerant of R744, provide reliable guarantee for the long-term stable operation of air conditioning system.
Description
Technical Field
The utility model relates to an air conditioner hose sub-assembly for novel refrigerant R744 belongs to air conditioner rubber tube field.
Background
The refrigerant is also called as refrigerant, and is a substance that circulates in an air-conditioning refrigeration system and realizes refrigeration through phase change thereof. Refrigerants have been developed with technological advances and ever-increasing environmental demands: the first generation CFC (chlorofluorocarbon) and the second generation HCFC (hydrochlorofluorocarbon) are replaced by chlorine element to destroy the atmospheric ozone layer, and the third generation HFC (hydrofluorocarbon) refrigerant, most typically R134a, is currently in the market. Although the ozone depletion potential, ODP, of R134a is almost 0, its greenhouse effect index, GWP, is as high as 1300, which causes severe global warming. The eu stipulates that newly released vehicle models will prohibit the use of refrigerants with GWP values greater than 150 from 2011, 1/1; all vehicle models from 1 month and 1 day of 2017 need to meet the requirement that the GWP of the refrigerant is less than 150, and the currently used refrigerant R134a becomes one of main controlled substances of a Bulgarian correction case in Montreal protocol due to high GWP value and is forbidden to be used. It is imperative to develop new refrigerants, the fourth generation refrigerant is mainly HFOs refrigerant, and representative products include R1234ze and R1234 yf. Both of these classes of refrigerants possess zero ODP values and extremely low GWP values. Although Hydrofluoroolefins (HFOs) have received extensive attention and have been successfully used due to their excellent performance and environmental friendliness, the development of HFOs in China is still at the beginning due to the high cost and patent restrictions of HFOs refrigerants themselves.
Therefore, the natural novel refrigerant R744(CO2) is the best choice for future refrigerants. CO22Is a substance naturally occurring in nature, and has ODP of 0 and GWP of 1. Wide source, low cost, non-flammable, safe and non-toxic, is suitable for various lubricating oils, and can not be decomposed at high temperature. And meanwhile, the latent heat of evaporation is large, the refrigerating capacity per unit volume is high, the heat insulation index is high, namely K is 1.30, the pressure ratio of the compressor is about 2.5-3.0, and the refrigerating system is lower than other refrigerating systems, so that the volumetric efficiency is relatively large, the economy is good, and the refrigerating system has a great development prospect.
However, the R744 refrigerant also has the following disadvantages: the system has high working pressure reaching 0-17 MPa, which is 4 times of the pressure of the existing system, and has higher requirement on the pressure-bearing capacity of equipment and pipelines; secondly, the molecules are small and easy to leak, and the shielding layer of the existing rubber tube can not meet the requirement far away; thirdly, the working temperature of the system is high, between 40 ℃ below zero and 165 ℃, and the prior rubber tube can not meet the use requirement.
By combining the above conditions, the working pressure of the traditional three-layer, four-layer and five-layer air-conditioning hoses and assemblies thereof in the conventional air-conditioning system is generally 0-3.5 MPa, the service temperature is-40 ℃ to +125 ℃, the service requirements of the R744 novel refrigerant cannot be met, and the development of hoses and assemblies with new structures is a requirement for the development of R744 air-conditioning systems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming above technological not enough, provide a high temperature resistant, high pressure resistant, hyposmosis, low inflation, low NVH, long-life compound air conditioner hose and sub-assembly for carrying novel environmental protection refrigerant R744.
In order to achieve the purpose, the utility model adopts the technical proposal that: the utility model provides a satisfy air conditioner hose sub-assembly of novel refrigerant, includes air conditioner hose and fixes the metal joint at air conditioner hose both ends, metal joint includes bushing core, aluminium cover and rubber seal, bushing core one end is inserted inside and the air conditioner hose connection of air conditioner hose to be equipped with sealed recess on the outer wall of this end, be equipped with in this sealed recess rubber seal, this rubber seal are located between the outer wall of bushing core and the air conditioner hose inner wall, the cover is equipped with on the tip outer wall that air conditioner hose and bushing core are connected aluminium cover, this aluminium cover through withhold back with air conditioner hose tip locking between bushing core and aluminium cover.
Furthermore, the outer wall of the end part, close to the air conditioning hose, of the lining core is provided with a buckling groove, the end part of the aluminum sleeve is provided with a convex claw which is bent inwards and matched with the buckling groove, the convex claw is positioned in the buckling groove, and the aluminum sleeve is locked by the buckling groove after being buckled.
Furthermore, the width of the buckling groove is 1.5-3.5mm, and the depth of the buckling groove is 0.5-1.0 mm.
Furthermore, three sealing grooves are formed in the outer wall of the connecting section of the lining core and the air conditioner hose, the sealing grooves are rectangular grooves, and rubber sealing rings placed in the rectangular grooves are trapezoidal sealing rings with trapezoidal sections.
Furthermore, the rubber sealing ring is one or a combination of more of ethylene propylene diene monomer, hydrogenated nitrile rubber and fluororubber, and the hardness of the rubber sealing ring is 70-90 Shore A; the width of the sealing groove is 2.5-4.0mm, and the depth of the sealing groove is 0.5-1.0 mm.
Further, the air conditioner hose includes from inside to outside: barrier layer, middle glue layer, enhancement layer and outer glue layer.
Furthermore, the barrier layer is a nylon layer, and the thickness of the nylon layer is 0.2-1.0 mm; and the material of the barrier layer is one or a composite of more of PA66, PA6, PA610, PA1010, PA11, PA12, PA46, PA1313 and PA 1414.
Furthermore, the thickness of the middle glue layer is 0.5-2.5 mm; the middle rubber layer is made of one or a plurality of ethylene propylene diene monomer, butyl rubber chlorinated butyl rubber, chlorohydrin rubber, hydrogenated nitrile rubber, silicon rubber and fluorine rubber; the middle rubber layer of the low-temperature hose is one or a combination of more of ethylene propylene diene monomer, butyl rubber and chlorinated butyl rubber, and the middle rubber layer of the high-temperature hose is one or a combination of more of hydrogenated nitrile rubber, silicon rubber and fluororubber.
Further, the thickness of the reinforcing layer is 0.4-1.5 mm; the reinforcing layer material is one of aramid fiber, polyvinyl alcohol fiber and metal wire; the specifications of the selected aramid fiber and polyvinyl alcohol fiber are 1000D-3000D, the diameter of the metal wire is 0.2-0.5mm, and a single-layer or multi-layer weaving structure is adopted.
Furthermore, the thickness of the outer glue layer is 0.5-2.5 mm; the outer rubber layer is made of one or more of ethylene propylene diene monomer, chlorohydrin rubber, hydrogenated nitrile rubber, silicon rubber and fluororubber; the outer rubber layer of the low-temperature hose is made of ethylene propylene diene monomer rubber, and the outer rubber layer of the high-temperature hose is made of one or a combination of hydrogenated nitrile rubber, silicon rubber and fluororubber.
The utility model has the advantages as follows:
the gas barrier layer selected for the air-conditioning hose is made of high-temperature-resistant nylon, so that the low-permeability requirement of CO2 can be met, the problem of high temperature of R744 refrigerant during working is solved, and materials are selected according to different use requirements, so that the cost is properly reduced on the premise of meeting the use requirements; the rubber layers with different properties can work at the temperature of minus 50 ℃ to 180 ℃ by selecting the rubber pipes, so that the rubber pipes have good NVH (noise vibration harshness) performance and high and low temperature aging resistance. The reinforcing layer adopts metal wires, aramid fibers or polyvinyl alcohol fibers with high modulus and small temperature coefficient, and the requirements of small expansion coefficient and high pressure resistance of the rubber tube at the temperature of minus 40-180 ℃ are met.
The utility model discloses well metal joint material chooses for use the aluminum alloy, has workable and lightweight advantage. The trapezoidal rubber ring is assembled on the lining core for sealing, the sealing ring is made of a high-hardness and high-temperature-resistant rubber material, the nylon material is prevented from being in direct contact with the metal lining core, and the hose assembly is guaranteed to have better air tightness and better NVH performance. Compared with the traditional O-shaped ring seal, the trapezoidal rubber ring has larger sealing surface and better sealing effect,
the utility model discloses the mode of riveting is chooseed for use with being connected of air conditioner hose to well metal joint, and deformation through aluminium cover, rubber tube makes trapezoidal rubber circle compressive deformation on the bushing to play sealed effect.
By integrating the design, the utility model discloses air conditioner hose sub-assembly has excellent comprehensive properties such as resistant permeability, resistant high low temperature, bending resistance, low inflation, anti vibration and anti pulse. The utility model discloses air conditioner hose sub-assembly is a hose combination connector that is arranged in carrying the novel environmental protection refrigerant of R744 among the novel air conditioning system, provides reliable guarantee for the long-term stable operation of air conditioning system.
Drawings
Fig. 1 is a schematic structural view of the air conditioner hose assembly of the present invention.
Fig. 2 is a schematic view of the air conditioning hose assembly according to the present invention.
Fig. 3 is a schematic half-sectional view of the metal joint of the air-conditioning hose assembly of the present invention.
Fig. 4 is a half-sectional schematic view of the lining core of the air-conditioning hose assembly of the present invention.
Fig. 5 is a schematic sectional view of the rubber sealing ring of the air-conditioning hose assembly of the present invention.
In the figure, 1-air-conditioning hose, 2-joint, 101-barrier layer, 102-middle glue layer, 103-reinforcing layer, 104-outer glue layer, 201-lining core, 202-aluminum sleeve, 203-rubber sealing ring, 204-rectangular groove, 205-pressing groove.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The first implementation is carried out.
The utility model provides a satisfy air conditioner hose sub-assembly of novel refrigerant mainly is used for satisfying the air conditioner hose sub-assembly of refrigerant R744.
As shown in fig. 1, the assembly is mainly composed of two parts, an air conditioning hose 1 and metal fittings 2 fixed to both ends of the hose.
The metal joint mainly comprises a lining core 201, an aluminum sleeve 202 and a rubber sealing ring 203, one end of the lining core 201 is sleeved into the hose and connected with the hose 1, the other end of the lining core 201 is welded with a pressing plate or other metal parts through a metal pipe, three rectangular grooves 204 are formed in the outer wall of the connecting section of the lining core 201 and the hose 1, the rubber sealing ring 203 is placed in each groove, a buckling groove 205 is formed in the other side of the lining core 201, the aluminum sleeve 202 is locked through the buckling grooves, the end portion of the air-conditioning hose 1 is pressed between the lining core 201 and the aluminum sleeve 202, and the air-conditioning hose 1 is sealed through annular buckling at the trapezoidal sealing ring 203.
As shown in fig. 2, the air-conditioning hose comprises, from inside to outside, a barrier layer 101, a middle adhesive layer 102, a reinforcing layer 103, and an outer adhesive layer 104.
Wherein the material of the barrier layer 101 is one or a composite of more of PA66, PA6, PA610, PA1010, PA11, PA12, PA46, PA1313 and PA 1414. Compared with the traditional air-conditioning pipe, the air-conditioning pipe adopts high-temperature resistant nylon products PA46, PA1313 and PA1414, and can meet the high-temperature resistant requirement of an R744 product. The thickness of the nylon layer is 0.2-1.0 mm.
The middle rubber layer 102 is made of one or more of EPDM ethylene propylene diene monomer rubber, IIR butyl rubber, CIIR chlorinated butyl rubber, ECO chlorohydrin rubber, HNBR hydrogenated nitrile butadiene rubber, silicon rubber and fluororubber; preferably, in this embodiment, the low-temperature hose of the middle rubber layer is one or a combination of more than one of ethylene propylene diene monomer, butyl rubber and chlorinated butyl rubber, and the high-temperature hose is one or a combination of more than one of hydrogenated nitrile rubber, silicone rubber and fluororubber. The thickness of the middle glue layer is 0.5-2.5 mm.
Wherein the material of the reinforcing layer 103 is one of AR (aramid fiber), PVA (polyvinyl alcohol fiber) and metal wire; preferably, in this embodiment, the reinforcing layer material is aramid fiber or metal wire. The specification of AR (aramid fiber) and PVA (polyvinyl alcohol fiber) used by the reinforcing layer 103 is 1000D-3000D, the diameter of the metal wire is 0.2-0.5mm, and a single-layer or multi-layer weaving structure is adopted. The thickness of the reinforced layer is 0.4-1.5 mm.
Wherein the outer rubber layer 104 is made of one or more of EPDM ethylene propylene diene monomer rubber, ECO chlorohydrin rubber, HNBR hydrogenated nitrile rubber, silicone rubber and fluororubber; preferably, in this embodiment, the outer rubber layer low-temperature hose is ethylene propylene diene monomer, and the high-temperature hose is one or a combination of hydrogenated nitrile rubber, silicone rubber and fluororubber. The thickness of the outer glue layer is 0.5-2.5 mm.
The metal joint 2 is preferably made of aluminum. The preferred width of the rectangular groove 204 is 2.5-4.0mm, the preferred depth of the rectangular groove 204 is 0.5-1.0mm, the preferred width of the embossing groove is 1.5-3.5mm, and the preferred depth of the embossing groove is 0.5-1.0 mm.
The sealing ring 203 is one or a plurality of EPDM (ethylene propylene diene monomer) rubber, HNBR (hydrogenated nitrile butadiene rubber) and fluororubber, the hardness of the sealing ring 203 is 70-90 Shore A, the structure of the sealing ring 203 is a rectangular ring or a trapezoidal ring, and preferably, the structure of the sealing ring 203 is a trapezoidal ring.
In addition, it should be noted that the materials selected in the embodiment are all existing materials, and are all existing products in the current market.
And II, implementing.
The preparation method of the air conditioning hose provided in the first embodiment comprises the following steps:
1) extruding the barrier layer on the TPX core rod by using an extruder;
2) introducing the core rod of the outer covering barrier layer prepared in the step 1 into a rubber extruder, and extruding and covering a middle rubber layer on the surface of the barrier layer;
3) introducing the tube blank prepared in the step 2 into a knitting machine, and knitting a reinforcing layer on the surface of the intermediate adhesive layer;
4) introducing the braided rubber tube prepared in the step 3 into a rubber extruder, and coating an outer rubber layer on the surface of the enhancement layer;
5) and finally, winding or coating TPX on the tube blank prepared in the step 4 according to the requirements of customers, vulcanizing in a cylinder, and removing cores to obtain the air-conditioning hose.
And (5) implementing the third step.
The preparation method of the metal joint provided in the first embodiment includes:
1) processing the lining core 201 and the aluminum sleeve 202 by adopting a mechanical processing method;
2) vulcanizing the rubber sealing ring 203 by adopting a mould pressing method;
3) welding the lining core 201 with a metal pipe, and welding the other end of the metal pipe with a pressure plate or other metal pieces;
4) sleeving the rubber sealing ring 203 prepared in the step 2 into the groove 204 on the lining core prepared in the step 3;
5) sleeving an aluminum sleeve 202, and inserting an air-conditioning hose into the lining core in the step 4;
6) finally, the aluminum sheath 202 is deformed by crimping by a crimping machine to crimp the hose 1 to the core 201.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the scope of the present invention in any way, and all technical solutions obtained by using equivalent substitution modes and the like fall within the scope of the present invention.
The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.
Claims (10)
1. The utility model provides a satisfy air conditioner hose sub-assembly of novel refrigerant, includes air conditioner hose and fixes the metal joint at air conditioner hose both ends, a serial communication port, metal joint is including lining core, aluminium cover and rubber seal, inside and the air conditioner hose connection of lining core one end insertion air conditioner hose to be equipped with sealed recess on the outer wall of this end, be equipped with in this sealed recess rubber seal, this rubber seal are located between the outer wall of lining core and the air conditioner hose inner wall, the cover is equipped with on the tip outer wall that air conditioner hose and lining core are connected aluminium cover, this aluminium cover through withholding back with air conditioner hose tip locking between lining core and aluminium cover.
2. The air-conditioning hose assembly meeting the requirement of a novel refrigerant as claimed in claim 1, wherein the outer wall of the bushing core close to the end of the air-conditioning hose is provided with a buckling groove, the end of the aluminum sleeve is provided with a claw which is bent inwards and matched with the buckling groove, the claw is positioned in the buckling groove, and the aluminum sleeve is locked by the buckling groove after buckling.
3. An air conditioner hose assembly satisfying a new refrigerant as set forth in claim 2, wherein said crimping grooves have a width of 1.5-3.5mm and a depth of 0.5-1.0 mm.
4. The air-conditioning hose assembly meeting the requirement of a novel refrigerant as claimed in claim 1, wherein three sealing grooves are formed on the outer wall of the connection section of the lining core and the air-conditioning hose, the sealing grooves are rectangular grooves, and the rubber sealing rings placed in the rectangular grooves are trapezoidal sealing rings with trapezoidal sections.
5. An air conditioner hose assembly meeting the requirement of a novel refrigerant according to claim 1 or 4, wherein the rubber sealing ring is one or a composite of more of ethylene propylene diene monomer, hydrogenated nitrile butadiene rubber and fluororubber, and the hardness of the rubber sealing ring is 70-90 Shore A; the width of the sealing groove is 2.5-4.0mm, and the depth of the sealing groove is 0.5-1.0 mm.
6. An air conditioner hose assembly meeting the requirement of a novel refrigerant according to claim 1, wherein the air conditioner hose comprises from inside to outside: barrier layer, middle glue layer, enhancement layer and outer glue layer.
7. The air conditioner hose assembly satisfying the new refrigerant as set forth in claim 6, wherein said barrier layer is a nylon layer having a thickness of 0.2-1.0 mm; and the material of the barrier layer is one or a composite of more of PA66, PA6, PA610, PA1010, PA11, PA12, PA46, PA1313 and PA 1414.
8. The air conditioner hose assembly satisfying the new refrigerant as set forth in claim 6, wherein the thickness of said middle adhesive layer is 0.5-2.5 mm; the middle rubber layer is made of one or a plurality of ethylene propylene diene monomer, butyl rubber chlorinated butyl rubber, chlorohydrin rubber, hydrogenated nitrile rubber, silicon rubber and fluorine rubber; the middle rubber layer of the low-temperature hose is one or a combination of more of ethylene propylene diene monomer, butyl rubber and chlorinated butyl rubber, and the middle rubber layer of the high-temperature hose is one or a combination of more of hydrogenated nitrile rubber, silicon rubber and fluororubber.
9. An air conditioner hose assembly satisfying the new refrigerant as set forth in claim 6, wherein said reinforcement layer has a thickness of 0.4-1.5 mm; the reinforcing layer material is one of aramid fiber, polyvinyl alcohol fiber and metal wire; the specifications of the selected aramid fiber and polyvinyl alcohol fiber are 1000D-3000D, the diameter of the metal wire is 0.2-0.5mm, and a single-layer or multi-layer weaving structure is adopted.
10. An air conditioner hose assembly satisfying the new refrigerant as set forth in claim 6, wherein said outer adhesive layer has a thickness of 0.5-2.5 mm; the outer rubber layer is made of one or more of ethylene propylene diene monomer, chlorohydrin rubber, hydrogenated nitrile rubber, silicon rubber and fluororubber; the outer rubber layer of the low-temperature hose is made of ethylene propylene diene monomer rubber, and the outer rubber layer of the high-temperature hose is made of one or a combination of hydrogenated nitrile rubber, silicon rubber and fluororubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921500385.2U CN211550846U (en) | 2019-09-10 | 2019-09-10 | Air conditioner hose assembly meeting novel refrigerant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921500385.2U CN211550846U (en) | 2019-09-10 | 2019-09-10 | Air conditioner hose assembly meeting novel refrigerant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211550846U true CN211550846U (en) | 2020-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921500385.2U Active CN211550846U (en) | 2019-09-10 | 2019-09-10 | Air conditioner hose assembly meeting novel refrigerant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211550846U (en) |
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2019
- 2019-09-10 CN CN201921500385.2U patent/CN211550846U/en active Active
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