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

Hermetic refrigerant compressor and refrigerator-freezer using the same

a technology of refrigerant compressor and refrigerator, which is applied in the direction of positive displacement liquid engine, piston pump, lighting and heating apparatus, etc., can solve the problem of difficult formation of oil film, and achieve the effect of reducing viscosity and high reliability of shaft parts

Pending Publication Date: 2021-04-29
PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a refrigerant compressor that can use a lubricating oil with reduced viscosity while still achieving high reliability of the shaft part. This means that the compressor is less likely to break down and need maintenance over time.

Problems solved by technology

If the lubricating oil has a low viscosity, an oil film is not easily formed.

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
  • Hermetic refrigerant compressor and refrigerator-freezer using the same
  • Hermetic refrigerant compressor and refrigerator-freezer using the same
  • Hermetic refrigerant compressor and refrigerator-freezer using the same

Examples

Experimental program
Comparison scheme
Effect test

embodiment 1

[0037][Configuration of Refrigerant Compressor]

[0038]First, a representative configuration example of a hermetic refrigerant compressor according to Embodiment 1 of the present disclosure is specifically described with reference to FIG. 1 and FIG. 2. FIG. 1 is a schematic sectional view showing one example of the configuration of a hermetic refrigerant compressor 100 according to Embodiment 1 of the present disclosure (hereinafter, the hermetic refrigerant compressor 100 may be simply referred to as “refrigerant compressor 100”). FIG. 2 is a schematic side view showing one example of the configuration of a crank shaft 108, which is a shaft part included in the refrigerant compressor 100.

[0039]As shown in FIG. 1, the refrigerant compressor 100 includes a sealed container 101 filled with a refrigerant that is, for example, R600a. Mineral oil is stored in the bottom of the sealed container 101 as lubricating oil 103. In the present disclosure, the lubricating oil 103 has a kinematic vi...

embodiment 2

[0092]In Embodiment 2, one example of a refrigerator-freezer that includes the refrigerant compressor 100 described above in Embodiment 1 is specifically described with reference to FIG. 4. FIG. 4 is a schematic diagram showing a schematic configuration of the refrigerator-freezer including the refrigerant compressor 100 according to Embodiment 1. Therefore, in Embodiment 2, only a fundamental configuration of the refrigerator-freezer is briefly described.

[0093]As shown in FIG. 4, the refrigerator-freezer according to Embodiment 2 includes, for example, a body 275, a dividing wall 278, and a refrigerant circuit 270. The body 275 is constituted by a thermally-insulated box, a door, and so forth. The box is configured to have one opening face, and the door is configured to open / close the opening of the box. The interior of the body 275 is divided by the dividing wall 278 into a product storage space 276 and a machinery room 277. An unshown air feeder is provided in the storage space 2...

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

No PUM Login to View More

Abstract

A hermetic refrigerant compressor (100) includes a sealed container (101) in which lubricating oil (103) having a kinematic viscosity in a range of 1 to 9 mm2 / S at 40° C. is stored, the lubricating oil (103) containing a sliding modifier that is either sulfur or a sulfur-containing compound. A compression element (107) includes a shaft part that is a crank shaft (108). In a case where a sliding surface of a main shaft (109) is a single sliding surface, a length of the single sliding surface in an axial direction is a single sliding length L, whereas in a case where the sliding surface is divided into a plurality of sliding surfaces, a length of one of the sliding surfaces in the axial direction, the one sliding surface having the least length in the axial direction among the plurality of sliding surfaces, is the single sliding length L, and a ratio L / D of the single sliding length L to an external diameter D of the main shaft (109) is less than or equal to 0.51.

Description

TECHNICAL FIELD[0001]The present invention relates to a hermetic refrigerant compressor for use in, for example, a refrigerator or an air conditioner and also to a refrigerator-freezer using the hermetic refrigerant compressor.BACKGROUND ART[0002]In recent years, from the viewpoint of global environment conservation, the development of a high-efficient hermetic refrigerant compressor that uses less fossil fuels has been conducted. For example, in order to realize high efficiency, it has been proposed to form various films on sliding surfaces of slide members included in the hermetic refrigerant compressor, and to use lubricating oil having a reduced viscosity.[0003]The hermetic refrigerant compressor includes a sealed container in which the lubricating oil is stored. The sealed container also accommodates an electric element and a compression element. The compression element includes, as the slide members, for example, a crank shaft, a piston, and a connecting rod serving as a coupl...

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(United States)
IPC IPC(8): F04B39/02F04B39/00
CPCF04B39/0253F04B39/122F04B39/0094F25B1/02F04B39/023F04B39/0215F04B35/04F04C2210/26
Inventor HAYASHI, HIROTOKAWABATA, HIROTAKAIDE, TERUMASAAKASHI, HIRONARIGONDO, MASANOBUYAGI, AKIO
Owner PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE