CN209414810U - A kind of wavy metal air-conditioner pipe meeting novel refrigerant - Google Patents
A kind of wavy metal air-conditioner pipe meeting novel refrigerant Download PDFInfo
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- CN209414810U CN209414810U CN201821736507.3U CN201821736507U CN209414810U CN 209414810 U CN209414810 U CN 209414810U CN 201821736507 U CN201821736507 U CN 201821736507U CN 209414810 U CN209414810 U CN 209414810U
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Abstract
The utility model discloses a kind of wavy metal air-conditioner pipes for meeting novel refrigerant, the wavy metal air-conditioner pipe successively includes: barrier layer, nylon layer, mesoglea, enhancement layer and outer glue-line from inside to outside, the barrier layer is the bellows of stainless steel material, and the nylon layer is wrapped in the periphery of bellows and fits closely with bellows；And the nylon layer, with a thickness of 0.1~1.0mm, the mesoglea is with a thickness of 0.5~2.5mm, and the enhancement layer is with a thickness of 0.4~1.5mm, and the outer glue-line is with a thickness of 0.5~2mm.The utility model can keep identical state under the conditions of the use temperature of system requirements, not only maintain the flexibility of pipeline, but also can guarantee the shielding action of barrier layer, the generation for guaranteeing hyposmosis and explosion being avoided to decompress.
Description
Technical field
The utility model relates to a kind of air conditioning hoses, and in particular to a kind of compound air for conveying novel refrigerant R744
Hose is adjusted, car air-conditioner refrigerating field is belonged to.
Background technique
Refrigerant is the working media that air-conditioning system recycles in process of refrigerastion, at present the air-conditioning systems such as automobile, family institute
It the use of refrigerant is halide-containing.European Union's regulation: from January 1st, 2011, the vehicle newly issued will be forbidden to use
GWP value is greater than 150 refrigerant；The GWP that all vehicles require to meet refrigerant on January 1st, 2017 is less than 150
Requirement, the GWP value of refrigerant R134a used at present is 1300 or so, and therefore, R134a has become that " Montreal is agreed
One of book " the main controlled substance of Kigali's amendment, it will be prohibited from using.The GWP value of carbon dioxide is that 1, ODP value is 0, tool
There are good environment friendly, while its small toxicity, no combustibility is cheap, therefore carbon dioxide is as naturally and low
The refrigerant of cost is undoubtedly best candidate.
At supercritical conditions, the pressure of air-conditioning system is much higher than R134a system to carbon dioxide gas, and refrigeration performance omits
Better than R134a system, the efficiency of system has also obtained certain raising.But use carbon dioxide as new refrigerant after,
Huge variation has occurred in air-conditioning system, to convey the refrigerant hose higher requirements are also raised, be mainly shown as:
(1) system pressure is high, the use of pressure is 0MPa~17MPa, is 4~10 times of existing system pressure；(2) system temperature is high, high
Pressure section temperature ranges up to 180 DEG C；(3) leakage rate is small, it is desirable that the leakage rate of sebific duct is less than 0.3g/；It (4) is to avoid freezing
There is pressure drop during transportation in agent carbon dioxide, and sebific duct expansion character is more demanding；(5) pipeline connecting with compressor has
More complicated vibration and pulse environment；(6) carbon dioxide molecule is small, cannot directly otherwise can using rubber material inside sebific duct
There is explosion and decompresses phenomenon；(7) compressor oil of New raxa requires the medium-resistance of pipeline more harsh.
In summary situation, existing rubber hose of air conditioning system can no longer meet the requirement of R744 novel refrigerant,
New construction hose must be developed.Because traditional air-conditioner pipe structure is generally made of barrier layer, rubber layer, enhancement layer, rubber layer,
Using pressure between 0~3.5MPa, it is no more than 140 DEG C using temperature.But with the application of R744 medium, new air-conditioning system
Its operating pressure of uniting improves 3~5 times, and for the maximum temperature that works up to 180 DEG C, existing air-conditioner pipe is unable to satisfy R744 working medium
The high temperature and pressure requirement of system.And the characteristics of being based on R744 refrigerant itself, barrier layer is only the air-conditioning of one layer of pure nylon at present
It is unable to satisfy novel air conditioning system low-permeability requirement, be easy to cause the infiltration and leakage of medium.
Chinese patent application (CN108317343A) discloses a kind of air-conditioner pipe for meeting novel refrigerant and its connection knot
Structure, it is same to select corrugated stainless steel tubing as barrier layer, using the structure of the direct outpacking rubber of corrugated stainless steel tubing, due to
Space is larger at the trough of corrugated stainless steel tubing, and sebific duct can be due to starved in sulfidation, and sulfide stress is insufficient, leads to rubber
The high temperature resistance of protective layer is poor, and the requirement used is not achieved.
Summary of the invention
The purpose of this utility model is exactly to provide a kind of for conveying novel environment-friendly refrigeration to overcome the above technical deficiency
High temperature high voltage resistant, low bulk, low NVH, the combined air conditioner hose of long-life of agent carbon dioxide.
To achieve the above object, the technical solution that the utility model is taken is as follows:
A kind of wavy metal air-conditioner pipe meeting novel refrigerant, the wavy metal air-conditioner pipe successively include: from inside to outside
Barrier layer, nylon layer, mesoglea, enhancement layer and outer glue-line, the barrier layer are the bellows of stainless steel material, the nylon layer
It is wrapped in the periphery of bellows and is fitted closely with bellows；And the nylon layer is with a thickness of 0.1~1.0mm, the mesoglea
With a thickness of 0.5~2.5mm, the enhancement layer is with a thickness of 0.4~1.5mm, and the outer glue-line is with a thickness of 0.5~2mm.
Further, the material of the nylon layer be PA66, PA6, PA610, PA1010, PA11, one of PA12 or
Several is compound.Preferably, the material of nylon layer is PA6, PA66's, one or more of PA610 is compound.
Further, the material of the mesoglea is EPDM ethylene propylene diene rubber, IIR butyl rubber, CIIR chlorinated butyl
Rubber, ECO chlorohydrin rubber, HNBR hydrogenated nitrile-butadiene rubber, silicon rubber, one or more of fluorubber it is compound.Preferably,
The mesoglea material of low pressure air-conditioner pipe is answering for one or more of ethylene propylene diene rubber, butyl rubber, chlorinated scoline
Close, the mesoglea material of high-pressure air conditioner pipe is hydrogenated nitrile-butadiene rubber, silicon rubber, one or more of fluorubber it is compound.
Further, the material of the enhancement layer is one of aramid fiber, vinal, wire.As
It is preferred that the material of enhancement layer is aramid fiber or wire.
Further, the material of the outer glue-line is EPDM ethylene propylene diene rubber, ECO chlorohydrin rubber, HNBR hydrogenated butyronitrile
Rubber, silicon rubber, one or more of fluorubber it is compound.Preferably, the outer glue-line material of low pressure air-conditioner pipe is ternary
EP rubbers, the outer glue-line material of high-pressure air conditioner pipe are hydrogenated nitrile-butadiene rubber.
The beneficial effects of the utility model are: the bellows gas-barrier layer that the utility model is selected is metal material, energy
Enough guarantee to keep identical state under conditions of -50 DEG C of use temperature~180 DEG C of system requirements, has both maintained the soft of pipeline
It is soft, and can guarantee the shielding action of barrier layer, the generation for guaranteeing hyposmosis and explosion being avoided to decompress.
On the one hand nylon layer can guarantee to fit closely with metal bellows, sebific duct is made to have better NVH performance, another
Aspect is it is possible to prevente effectively from internal layer rubber causes to vulcanize in sulfidation since space is larger at the trough of corrugated stainless steel tubing
Starved, sulfide stress is insufficient, and the situation for causing the high temperature resistance of rubber protective layer poor occurs.Select the rubber of different performance
Layer can guarantee flexibility of sebific duct under conditions of -50 DEG C~180 DEG C, guarantee that sebific duct has good NVH performance.
Enhancement layer has selected wire, aramid fiber or the vinal that modulus is high, temperature coefficient is small, ensure that-
The coefficient of expansion of sebific duct at 40 DEG C~180 DEG C is small, and the circumferential direction of sebific duct and radial stability are good, reduces system pressure drop, keeps away
The generation for the problem of having exempted from explosion decompression.
In summary design, this hose have osmotic-pressure-tolerant, high-low temperature resistant, bending resistance, low bulk, anti-vibration and pulse
The excellent comprehensive performances such as absorbability is more preferable.The utility model provides a kind of for the novel environment friendlies such as transport of carbon dioxide refrigeration
High temperature high voltage resistant, low bulk, low NVH, the combined air conditioner hose of long-life of agent, provide for air-conditioning system operation steady in a long-term
Reliable guarantee.
Detailed description of the invention
Fig. 1 is the wavy metal air-conditioner pipe structural schematic diagram provided by the utility model for meeting novel refrigerant.
In the figure, it is marked as 1- barrier layer, 2- nylon layer, 3- mesoglea, 4- enhancement layer, 5- outer glue-line.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1, a kind of wavy metal air-conditioner pipe for meeting novel refrigerant, the wavy metal air-conditioner pipe is from inside to outside
It successively include: barrier layer, nylon layer, mesoglea, enhancement layer and outer glue-line, the barrier layer is the bellows of stainless steel material,
The nylon layer is wrapped in the periphery of bellows and fits closely with bellows；And the nylon layer is with a thickness of 0.1~1.0mm,
The mesoglea with a thickness of 0.5~2.5mm, the enhancement layer with a thickness of 0.4~1.5mm, the outer glue-line with a thickness of 0.5~
2mm。
In the present embodiment, the material of the nylon layer is PA66, PA6, PA610, PA1010, PA11, one of PA12
Or it is several compound.Preferably, the material of nylon layer is PA6, PA66's, one or more of PA610 is compound.In described
The material of glue-line is EPDM ethylene propylene diene rubber, IIR butyl rubber, CIIR chlorinated scoline, ECO chlorohydrin rubber, HNBR hydrogen
Change nitrile rubber, silicon rubber, one or more of fluorubber it is compound.Preferably, the mesoglea material of low pressure air-conditioner pipe
For the compound of one or more of ethylene propylene diene rubber, butyl rubber, chlorinated scoline, the mesoglea material of high-pressure air conditioner pipe
Material be hydrogenated nitrile-butadiene rubber, silicon rubber, one or more of fluorubber it is compound.The material of the enhancement layer is that aramid fiber is fine
One of dimension, vinal, wire.Preferably, the material of enhancement layer is aramid fiber or wire.It is described
The material of outer glue-line is EPDM ethylene propylene diene rubber, ECO chlorohydrin rubber, HNBR hydrogenated nitrile-butadiene rubber, silicon rubber, in fluorubber
It is one or more of compound.Preferably, the outer glue-line material of low pressure air-conditioner pipe is ethylene propylene diene rubber, high-pressure air conditioner pipe
Outer glue-line material is hydrogenated nitrile-butadiene rubber.
Meet 1 step of preparation method of the wavy metal air-conditioner pipe of novel refrigerant described in the present embodiment are as follows:
Step 1: metal bellows is coated into nylon layer by nylon extruder；
Step 2: the pipe comprising barrier layer and nylon layer prepared in step 1 being introduced into Rubber Extruder, in nylon
Layer surface squeezes out cladding mesoglea；
Step 3: pipe obtained in step 2 being introduced into braider, in one layer of enhancement layer of mesoglea surface weave；
Step 4: finally, sebific duct after braiding obtained in step 3 is introduced into Rubber Extruder, in enhancing layer surface cladding
Outer glue-line obtains the air-conditioning rubber tube after vulcanization.
Meet 2 step of preparation method of the wavy metal air-conditioner pipe of novel refrigerant described in the present embodiment are as follows:
Step 1: plug is coated into nylon layer by nylon extruder；
Step 2: the pipe comprising nylon layer prepared in step 1 being introduced into Rubber Extruder, is squeezed in nylon layer surface
Mesoglea is coated out；
Step 3: pipe obtained in step 2 being introduced into braider, in one layer of enhancement layer of mesoglea surface weave；
Step 4: sebific duct after braiding obtained in step 3 being introduced into Rubber Extruder, coats outer glue in enhancing layer surface
Layer, obtains rubber tube after vulcanization；
Step 5: by metal bellows according to product demand size cut-to-length；
Step 6: by rubber tube obtained in step 4 according to product demand size cut-to-length；
Step 6: obtaining institute in rubber tube obtained finally, metal bellows obtained in step 5 will be penetrated in step 6
State air-conditioning rubber tube.
The basic principles and main features and advantage of the utility model have been shown and described above.The ordinary skill of this field
Personnel are not it should be appreciated that above-described embodiment limits the protection scope of the utility model, all use equivalent replacements etc. in any form
Mode technical solution obtained, falls in the protection scope of the utility model.
The parts not involved in the utility model is the same as those in the prior art or can be realized by using the prior art.
Claims (9)
1. a kind of wavy metal air-conditioner pipe for meeting novel refrigerant, which is characterized in that the wavy metal air-conditioner pipe is from inside to outside
It successively include: barrier layer, nylon layer, mesoglea, enhancement layer and outer glue-line, the barrier layer is the bellows of stainless steel material,
The nylon layer is wrapped in the periphery of bellows and fits closely with bellows；And the nylon layer is with a thickness of 0.1~1.0mm,
The mesoglea with a thickness of 0.5~2.5mm, the enhancement layer with a thickness of 0.4~1.5mm, the outer glue-line with a thickness of 0.5~
2mm。
2. a kind of wavy metal air-conditioner pipe for meeting novel refrigerant according to claim 1, which is characterized in that the Buddhist nun
The material of imperial layer is PA66, PA6, PA610, and PA1010, PA11, one or more of PA12's is compound.
3. a kind of wavy metal air-conditioner pipe for meeting novel refrigerant according to claim 2, which is characterized in that the Buddhist nun
The material of imperial layer is PA6, and PA66's, one or more of PA610 is compound.
4. a kind of wavy metal air-conditioner pipe for meeting novel refrigerant according to claim 1, which is characterized in that in described
The material of glue-line is EPDM ethylene propylene diene rubber, IIR butyl rubber, CIIR chlorinated scoline, ECO chlorohydrin rubber, HNBR hydrogen
Change nitrile rubber, silicon rubber, one or more of fluorubber it is compound.
5. a kind of wavy metal air-conditioner pipe for meeting novel refrigerant according to claim 4, which is characterized in that low pressure is empty
Adjust the mesoglea material of pipe for compound, the high pressure of one or more of ethylene propylene diene rubber, butyl rubber, chlorinated scoline
The mesoglea material of air-conditioner pipe be hydrogenated nitrile-butadiene rubber, silicon rubber, one or more of fluorubber it is compound.
6. a kind of wavy metal air-conditioner pipe for meeting novel refrigerant according to claim 1, which is characterized in that the increasing
The material of strong layer is one of aramid fiber, vinal, wire.
7. a kind of wavy metal air-conditioner pipe for meeting novel refrigerant according to claim 6, which is characterized in that the increasing
The material of strong layer is aramid fiber or wire.
8. a kind of wavy metal air-conditioner pipe for meeting novel refrigerant according to claim 1, which is characterized in that described outer
The material of glue-line is EPDM ethylene propylene diene rubber, ECO chlorohydrin rubber, HNBR hydrogenated nitrile-butadiene rubber, silicon rubber, one in fluorubber
Kind or it is several compound.
9. a kind of wavy metal air-conditioner pipe for meeting novel refrigerant according to claim 8, which is characterized in that low pressure is empty
The outer glue-line material for adjusting pipe is ethylene propylene diene rubber, and the outer glue-line material of high-pressure air conditioner pipe is hydrogenated nitrile-butadiene rubber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821736507.3U CN209414810U (en) | 2018-10-25 | 2018-10-25 | A kind of wavy metal air-conditioner pipe meeting novel refrigerant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821736507.3U CN209414810U (en) | 2018-10-25 | 2018-10-25 | A kind of wavy metal air-conditioner pipe meeting novel refrigerant |
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| CN209414810U true CN209414810U (en) | 2019-09-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340473A (en) * | 2018-10-25 | 2019-02-15 | 南京利德东方橡塑科技有限公司 | A kind of wavy metal air-conditioner pipe and preparation method thereof meeting novel refrigerant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340473A (en) * | 2018-10-25 | 2019-02-15 | 南京利德东方橡塑科技有限公司 | A kind of wavy metal air-conditioner pipe and preparation method thereof meeting novel refrigerant |
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