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

Sealed electric compressor

An electric compressor, sealed technology, applied in the direction of machine/engine, liquid variable capacity machinery, mechanical equipment, etc., can solve the problems of deterioration of lubrication state, low oil pressure, and easy wear and tear of bearing bearing 7, etc. achieve the effect of improving reliability

Active Publication Date: 2006-05-17
PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, these sliding parts can only be lubricated by the remaining oil attached to them, so the lubrication state will deteriorate
[0015] In addition, when the inverter device 50 operates at an extremely low operating frequency such as 25 Hz or below, the oil pressure generated on the sliding surface formed between the thrust surface 7a and the thrust washer 14a is very low, and it is easy to cause metal friction. direct contact with each other
[0016] When the above-mentioned state occurs, there will be a problem that the bearing surface 7a, the main shaft portion 10b of the crankshaft 10, and the bearing 7 are prone to wear.

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
  • Sealed electric compressor
  • Sealed electric compressor
  • Sealed electric compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] figure 1 A side cross-sectional view of the sealed electric compressor of embodiment 1 of the present invention, figure 2 It is an enlarged schematic diagram of some important structures in the sealed electric compressor in this embodiment.

[0041] Such as figure 1 , figure 2 As shown in the figure, the sealed container 101 contains an electric mechanism 102 and a compression mechanism 105 driven by the electric mechanism 102. The electric mechanism 102 is composed of a stator 103 and a rotor 104 provided with a permanent magnet (not shown in the figure). The lower part of the sealed container 101 stores oil 106 made of mineral oil. In addition, the refrigerant used is a hydrocarbon-based refrigerant that does not contain chlorine and fluorine.

[0042] The compression mechanism 105 is provided with: a cylinder block 109 that is provided with a bearing portion 107 and forms a cylinder 108; a crankshaft 110 having an eccentric portion 110a and a main shaft portion 110b...

Embodiment 2

[0057] image 3 A side cross-sectional view of the sealed electric compressor in embodiment 2 of the present invention, Figure 4 It is an enlarged schematic diagram of some important structures in the sealed electric compressor in this embodiment.

[0058] Such as image 3 , Figure 4 As shown in the figure, the sealed container 201 contains an electric mechanism 202 and a compression mechanism 205 driven by the electric mechanism 202. The electric mechanism 202 is composed of a stator 203 and a rotor 204 provided with a permanent magnet (not shown in the figure). The lower part of the sealed container 201 stores an oil 206 made of mineral oil. In addition, the refrigerant used is a hydrocarbon-based refrigerant that does not contain chlorine and fluorine.

[0059] The compression mechanism 205 is equipped with: a cylinder block 209 that is provided with a bearing portion 207 and forms a cylinder 208; a crankshaft 210 having an eccentric portion 210a and a main shaft portion 210...

Embodiment 3

[0075] Figure 5 A side sectional view of the sealed electric compressor in the third embodiment of the present invention, Figure 6 It is an enlarged schematic diagram of some important structures in the sealed electric compressor in this embodiment.

[0076] Such as Figure 5 , Figure 6 As shown in the figure, the sealed container 301 is equipped with an electric mechanism 302 and a compression mechanism 305 driven by the electric mechanism 302. The electric mechanism 302 is composed of a stator 303 and a rotor 304 with a permanent magnet (not shown in the figure) inside. The lower part of the sealed container 301 stores engine oil 306 made of mineral oil. In addition, the refrigerant used is a hydrocarbon refrigerant that does not contain chlorine and fluorine.

[0077] The compression mechanism 305 is provided with: a cylinder block 309 provided with a bearing portion 307 and forming a cylinder 308; a crankshaft 310 having an eccentric portion 310a and a main shaft portion 310...

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

The present invention provides a hermetic electric compressor driven by an inverter capable of preventing wear occurring in a sliding portion even when the lubrication state of the sliding portion deteriorates. The frequency converter device (150) is installed in the sealed electric compressor of the present invention, and a thrust ball bearing (114) is arranged on the thrust surface (107a) of the bearing part (107) bearing the gravity load of the rotor (104). In this way, even when the lubricating state is deteriorated, all loads in the thrust direction can be borne by the thrust ball bearing (114), the friction coefficient in the rotation direction can be reduced, and wear can be prevented.

Description

Technical field [0001] The present invention relates to a sealed electric compressor used in a freezing and refrigerating device and the like. Background technique [0002] In conventional sealed electric compressors of this kind, a thrust washer that is fluidly lubricated by compressor oil (hereinafter referred to as "oil") is generally provided. For an example, please refer to Japanese Patent Publication No. 10-54361. [0003] Hereinafter, a conventional sealed electric compressor will be described with reference to the drawings. [0004] Figure 7 It is a side sectional view of the conventional sealed electric compressor in Japanese Patent Laid-open No. 10-54361 mentioned above, Figure 8 It is an enlarged schematic diagram of some important structures in the existing sealed electric compressor. [0005] Such as Figure 7 with Figure 8 As shown in the figure, the sealed container 1 contains an electric mechanism 2 and a compression mechanism 5 driven by the electric mechanis...

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): F04B27/08C09K5/00
Inventor 取枡宏树
Owner PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE