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

Vortex type compressor

A scroll compressor and scroll technology, which is applied in the direction of rotary piston machinery, rotary piston pumps, mechanical equipment, etc., can solve the problems of excessive supply of lubricating oil and the influence of high pressure efficiency of scroll compressors, etc.

Inactive Publication Date: 2008-02-06
PANASONIC CORP
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the oil supply structure of the conventional scroll compressor, when the pressure difference between the high-pressure side and the low-pressure side increases, the amount of lubricating oil supplied also increases. HFC (fluorine compound) refrigerants, etc. are changed to, for example, CO 2 refrigerant, the discharge pressure becomes equivalent to CO 2 The very high pressure of the supercritical pressure of about 15 megapascals, the pressure difference between the high pressure side and the low pressure side is about 3 to 5 times that of HFC refrigerants. Therefore, the supply of lubricating oil is excessive, and the lubricating oil is further compressed. Issues affecting the high-pressure efficiency of scroll compressors

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
  • Vortex type compressor
  • Vortex type compressor
  • Vortex type compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026]Fig. 1 is a sectional view of a scroll compressor showing an embodiment of the present invention. In the illustrated scroll compressor 50 , a compressor 2 and an electric motor 3 are arranged inside the airtight container 1 . The compression mechanism part 2 is composed of a fixed scroll member 10 having a fixed scroll blade and a fixed end plate, an orbiting scroll member 11 having an orbiting scroll blade, and a bearing member 7. and the rotating end plate, the bearing member 7 is provided on the side of the orbiting scroll member 11 opposite to the orbiting scroll blade surface. The motor 3 is composed of a stator 4 fixed inside the airtight container 1 and a rotor 5 rotatably supported inside the stator 4 , and a drive shaft 6 is coupled to the rotor 5 in a penetrating state. One end of the drive shaft 6 is rotatably supported by a bearing 8 fixed to a bearing member 7 constituting a part of the compression mechanism unit 2 . A crankshaft 9 is provided at the front...

Embodiment 2

[0042] Fig. 4 is a sectional view of a scroll compressor showing another embodiment of the present invention. Fig. 5 is a partially enlarged sectional view of the oil supply passage shown in Fig. 4 . The second embodiment differs from the first embodiment described above in the following configuration. That is, as shown in FIGS. 4 and 5 , the oil supply passage of this embodiment is composed of a long hole 37 with an inlet portion 37a and a thin hole 38 with an oil outlet portion 38a, and is used to communicate with the upper lubricating oil storage portion as a high-pressure space. 21 and the back pressure chamber 28 serving as an intermediate pressure space, the oil outlet portion 38a of the fine hole 38 straddles the annular seal member 25 and constitutes a positional relationship in which the back pressure chamber 28 is intermittently opened.

[0043] The operation of the above oil supply mechanism will be described with reference to FIG. 6 . 6 is a plan view showing cha...

Embodiment 3

[0049] In Embodiment 3, the opening position of the oil inlet portion and intermittent control of oil supply and pressure reduction by changing the opening position, in other words, on-off / duty control, will be described with reference to FIG. 3 .

[0050] In FIG. 3( d), "X" represents the diameter of the annular sealing member 25, "Y" represents the eccentricity of the crankshaft 9 relative to the drive shaft 6, and "Z" represents the distance from the center of the orbiting scroll member 11 to the fine hole. The distance from the center of the oil inlet portion 29a of 29. The amount of eccentricity “Y” is the same as the amount of reciprocation (reciprocation width) of the annular seal member 25 .

[0051] The positions of the oil inlets 29a represented by X, Y, and Z above, that is, the arrangement where the oil inlets 29a reciprocate across the upper surface of the annular seal member 25 and intermittently open to the high-pressure space are determined by the following rel...

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

Provided is a scroll compressor capable of performing a highly efficient operation, by supplying a suitable amount of lubricating oil to a back pressure chamber or a scroll even when differential pressure between discharge pressure and suction pressure is high. A lubricating oil sump 22 disposed inside the center of a bearing member 7 and a back pressure chamber 28 disposed inside the outer periphery are communicated through a lubrication passage formed of a pore 29 and a long hole 30. An oil outlet of the long hole 30 is disposed at a position opening to the back pressure chamber 28, and an oil inlet of the pore 29 is disposed at a position where the oil inlet of the pore 29 reciprocates across an annular seal member 25 by a turning operation of a turning spiral member 11 and alternately opens to the lubricating oil sump 22 and the back pressure chamber 28. Lubricating oil reserving in the lubricating oil sump 22 is intermittently supplied to the back pressure chamber 28. Therefore, the lubricating oil amount of which supply is apt to excessively increase due to high differential pressure is controlled suitably, and a highly efficient and stable operation of the scroll compressor 50 is allowed.

Description

technical field [0001] The present invention relates to a technique for supplying an appropriate amount of lubricating oil used in a scroll compressor of a refrigeration cycle device into a compression space, and relates to a technique for supplying a high-pressure refrigerant such as carbon dioxide (hereinafter referred to as CO 2 ) used as a scroll compressor for refrigerant. Background technique [0002] The scroll compressor has the characteristics of low vibration and low noise. Since the flow of the compressed fluid is unidirectional, the fluid resistance during high-speed operation is small and the compression efficiency is high, so it is widely used. [0003] As a conventional scroll compressor, a structure shown in FIG. 7 is known. That is, scroll compressor 55 includes airtight container 1 , compression mechanism 2 and motor 3 disposed therein. Motor 3 is composed of stator 4 and rotor 5 , and drive shaft 6 is coupled to rotor 5 through penetration. The compressi...

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 Patents(China)
IPC IPC(8): F04C29/02F04C18/02
Inventor 饭田登鶸田晃二上义幸泽井清
Owner PANASONIC CORP