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

Scroll compressor

A scroll compressor and scroll technology, applied in the direction of rotary piston machinery, rotary piston pump, mechanical equipment, etc., can solve the problems of increased processing costs and complicated mechanical processing, and achieve the effect of improving the refrigeration coefficient

Inactive Publication Date: 2009-03-25
HITACHI JOHNSON CONTROLS AIR CONDITIONING INC
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In addition, Patent Document 2 shows that in order to realize the enlargement of the set volume ratio, the formation of the secondary channel constituting the exhaust gas is delayed, and the shape of the discharge port is set to an ellipse, polygon, etc., but the shape of the discharge port is equal to Compared with the case of a circular shape, its machining becomes complicated, so there is a problem of increased processing costs, especially in small 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
  • Scroll compressor
  • Scroll compressor
  • Scroll compressor

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0047] Use Figure 1~ Figure 5 A scroll compressor according to a first embodiment of the present invention will be described.

[0048] First, the overall structure of the scroll compressor according to the present embodiment will be described with reference to FIG. 1 . FIG. 1 is a longitudinal sectional view of a scroll compressor 50 according to the present embodiment.

[0049] The scroll compressor 50 of this embodiment is an example of a horizontal type scroll compressor for a refrigerator application product. In this scroll compressor 50 , a low-temperature refrigerant such as R404A, R507A, R508B, R410A, or hydrocarbon is used as a working fluid.

[0050] The scroll compressor 50 is a scroll compressor that compresses refrigerant between the orbiting scroll 3 driven by the motor 2 and the non-orbiting scroll, that is, the fixed scroll 4, by installing a motor 2 inside the airtight container 1. Compression mechanism 5 is formed. The scroll compression mechanism 5 has a...

no. 2 approach

[0068] Second, use Figure 6 A second embodiment of the present invention will be described. Figure 6 It is an enlarged view of the vicinity of the discharge port of the scroll compressor according to the second embodiment of the present invention. Regarding this second embodiment, the points described below are different from the first embodiment, and the other points are basically the same as the first embodiment, so repeated descriptions will be omitted.

[0069] In the second embodiment, the discharge port 13 is enlarged so that the area of ​​the discharge port is larger than the opening area toward the closed space 17, and consists of a small-diameter portion 13a and a large-diameter portion 13b. Therefore, by enlarging the middle of the discharge port, it is possible to reduce the flow path loss resistance and further improve the refrigeration coefficient of the compressor.

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 to improve performance factor of a compressor in high-pressure ratio operation. The scroll compressor (50) has a swirl scroll (3) and a fixed scroll (4) each having a spiral lap standing on an end plate. The scrolls (3, 4) are combined so that their laps face inside to form closed spaces on a lap outer wall face side of the swirl scroll (3) and a lap inner wall face side of the fixed scroll (4) by each of laps and the end plate. Volumes of the closed spaces are reduced along with movement in a center direction by relative motions of the scrolls, and gas taken from outer peripheral sides of the scrolls is compressed and discharged from a discharge port formed at the center part of the scroll. In the scroll compressor (50), a stroke volume is within a range of 5 to 25 cm<3>, and a ratio of a flat surface area of a minimum closed space in the start of communication of a compression chamber with the discharge port, and an opening area of the discharge port is within 5.0 to 8.0.

Description

technical field [0001] The present invention relates to a scroll compressor as one of volumetric fluid machines, in particular to a scroll compressor suitable for refrigerator application products using low-temperature refrigerants such as R404A, R507A, R508B, R410A, and hydrocarbons as working fluids. machine. Background technique [0002] The set volume ratio of the scroll compressor is represented by the ratio of the stroke volume to the volume of the smallest enclosed space. In the case of operation in which the discharge pressure is higher than the pressure of the minimum enclosed space (high pressure ratio operation), if the set volume ratio is large, the input power of the scroll compressor is small, and the indicated efficiency of the scroll compressor becomes low. good. [0003] Therefore, in the scroll compressor described in Japanese Patent Application Laid-Open No. 7-27065 (Patent Document 1), it is proposed to use an algebraic spiral as a screw lap and a fixed...

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): F04C18/02F04C29/06
CPCF04C18/0215F04C18/0246F04C29/0021F04C29/12F04C2210/26F04C2240/40Y10S415/00Y10S417/00
Inventor 村上晃启小野口昌宏岛田敦
Owner HITACHI JOHNSON CONTROLS AIR CONDITIONING INC