Unlock instant, AI-driven research and patent intelligence for your innovation.

Coolant hose

A technology for refrigerants and hoses, which is applied in the direction of hoses, pipes, tubular objects, etc., and can solve problems such as cracking of EVOH sheets

Pending Publication Date: 2021-12-14
CONTITECH TECHNO CHEM
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, this type of hose has disadvantages in terms of flexibility and exposure to dynamic mechanical loads
Relatively quick cracking of EVOH sheets due to sudden loads or during low temperature flexibility tests in hoses of the above types

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Coolant hose
  • Coolant hose
  • Coolant hose

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The present invention will now be described based on working examples with reference to experimental results and graphs.

[0035] Experimental results

[0036]Table 1 shows a number of different physical test results of the refrigerant hose V1 based on the prior art and the refrigerant hose E1 of the present invention. The test results are obtained based on DIN specification 74106. An evaluation of "+" means that the test passed; an evaluation of "-" means that the test failed.

[0037] The hose structure here is as follows:

[0038] Another second inner sheet A2: PA6 (organic alloy LT5050, Arkema), sheet thickness 0.3mm

[0039] Barrier sheet A1: Elastomer-modified EVOH (Eval LA170B, Kuraray) (E1) or unmodified EVOH (Evasin 2951F, Arkema) (V1), sheet thickness 0.1mm

[0040] Additional third inner sheet A3: BIIR, sheet thickness 1.1mm

[0041] Reinforcement B: Braided para-aramid,

[0042] Outer layer C: EPM, layer thickness 0.85mm to 1mm

[0043] Table 1

[...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a coolant hose having at least the following layer structure: - an inner layer (A) that acts as barrier layer and is formed from at least two plies (A1, A2), wherein at least one ply (A1) is formed from an elastomer-modified EVOH or a polyolefin-modified EVOH or of a combination of an elastomer-modified EVOH and a polyolefin-modified EVOH and - at least one strength member layer (B) and - an outer layer (C) formed from at least one elastomeric material.

Description

technical field [0001] The invention relates to a refrigerant hose, which has at least the following layer structure: [0002] - an inner layer serving as a barrier layer and consisting of at least two plies, and [0003] - at least one reinforcing layer, and [0004] - An outer layer consisting of at least one elastomeric material. Background technique [0005] Refrigerant hoses installed in air conditioning systems in the automotive industry often contain fluorocarbons as refrigerants. When this type of refrigerant escapes into the atmosphere, it can have adverse effects on the environment in the form of, for example, acid rain, the greenhouse effect or the degradation of the ozone layer. CO 2 Is a more environmentally friendly refrigerant. However, due to its molecular size as well as its physical and chemical properties, it subjects air-conditioning systems to stricter requirements and demands; compliance with or solutions to these demands and demands requires, inte...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/30B32B5/02B32B25/08B32B25/10B32B25/14B32B27/32B32B27/34F16L11/08
CPCB32B27/306B32B27/34B32B27/32B32B25/10B32B25/08B32B25/14B32B5/02B32B5/026B32B2262/0269B32B2262/0261B32B2262/0223B32B2262/0284B32B2307/546B32B2307/7265B32B2270/00B32B2597/00F16L2011/047F16L11/082F16L11/085
Inventor 亚历山德拉·勃兰特迈克尔·松特
Owner CONTITECH TECHNO CHEM