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Libricant and media for coolant compressed refrigeration circulator

A compression refrigeration and cooling medium technology, applied in refrigeration and liquefaction, refrigerators, compressors, etc., can solve the problems of reduced lubricant viscosity, inability to ensure lubricity, and high solubility

Inactive Publication Date: 2005-10-26
JAPAN ENERGY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since the hydrocarbon cooling medium that does not contain halogen atoms has a high solubility with respect to lubricants such as mineral oil, if the above-mentioned lubricant is used, the viscosity of the lubricant will decrease, the lubricity cannot be ensured, and the filling amount of the cooling medium needs to be increased.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0024] Hereinafter, the present invention will be specifically described by way of examples.

[0025] The test oil of embodiment 1~3

[0026] (1) Use the ether compound shown in Table 1 as the test oil

[0027] Ether compound of general formula (1)

Viscosity at 40°C

degree (mm 2 / s)

Acid value (mg

KOH / g)

Hydroxyl value (mg

KOH / g)

R 1

R 2

m

n

type of polymer

Example 1

CH 3

CH 3

4

14

irregular

Copolymer

46

0.02

12

Example 2

CH 3

CH 3

0

14

Homopolymer

32

0.01

8

Example 3

C(CH 3 ) 3

CH 3

4

14

random copolymer

46

0.02

16

[0028] (4) The test oil of Comparative Example 1: refrigerating machine oil (Freol S10; manufactured by Japan Enaji) composed of paraffinic mineral oil, viscosity 10mm at...

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PUM

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Abstract

To obtain a lubricating oil for a refrigerant compression type refrigerating cycle apparatus, which has proper compatibility with and solubility in a 2-4C hydrocarbon refrigerant having no halogen atom, keeps viscosity not to impair lubricating properties, reduces the amount of the refrigerant filled and has excellent lubricating properties, stability, etc., and a working fluid. In the lubricating oil for refrigerant compression type refrigerating cycle apparatus with which the 2-4C hydrocarbon refrigerant containing no halogen atom is used, the lubricating oil comprises an ether compound represented by general formula R1-A-OR2(R1and R2are each a 1-4C alkyl group; A is a polymerization chain consisting of m oxyethylene groups and n oxypropylene groups; m is an integer of 0-50; n is an integer of 2-50; m / n is <=1) as a main component and has 10-100 mm2 / s viscosity at 40[deg.]C. The working fluid for the refrigerant compression type refrigerating cycle apparatus comprises the 2-4C hydrocarbon refrigerant containing no halogen atom and the lubricating oil.

Description

technical field [0001] The invention relates to a lubricating oil and a working medium for cooling medium compression refrigeration cycle devices using hydrocarbons with 2 to 4 carbon atoms that do not contain halogen atoms, such as ethane, propane, butane, isobutane and other cooling mediums. Background technique [0002] Conventionally, in refrigeration medium compression refrigeration cycle devices used in refrigerators, air conditioners, refrigerators, etc., as the cooling medium, Freon, such as chlorofluorocarbon (CFC) R-11 ( Freon such as trichlorofluoromethane), R-12 (dichlorodifluoromethane), hydrochlorofluorocarbon (HCFC) R-22 (monochlorodifluoromethane), etc., but due to the recent ozone layer depletion problem , Internationally restrict its production and use, now, switch to chlorine-free, for example, new hydrogen-containing freon cooling products such as difluoromethane (R-32), tetrafluoroethane (R-134 or R-134a) medium. However, although these HFCs do not des...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B1/00C09K5/04C10M105/18C10M107/24C10M107/34C10M127/00C10N20/02C10N40/30
CPCC10M105/02C10M107/24C10M171/00C10M171/008C10N2040/30
Inventor 开米贵高桥仁
Owner JAPAN ENERGY CORP
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