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Hermetic electric compressors and air conditioners

An electric compressor, electric motor technology, applied in electric components, machines/engines, liquid fuel engines, etc., can solve problems such as reduced pressure heat transfer rate

Active Publication Date: 2018-03-23
HITACHI JOHNSON CONTROLS AIR CONDITIONING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This refrigeration cycle may cause pressure loss in the piping or decrease in heat transfer rate in the condenser, evaporator, etc. due to the oil that is brought in.

Method used

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  • Hermetic electric compressors and air conditioners
  • Hermetic electric compressors and air conditioners
  • Hermetic electric compressors and air conditioners

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] Hereinafter, embodiments of the present invention will be described in detail with reference to appropriate drawings.

[0034] The hermetic electric compressor of this embodiment is mainly characterized in that the insulator cover of the electric motor has an inner wall, protruding pieces, and ribs which will be described in detail later.

[0035] Hereinafter, an overall configuration of an air conditioner including a scroll compressor as a hermetic electric compressor will be described, and then the scroll compressor will be described.

[0036]

[0037] figure 1 It is a structural explanatory diagram of the air conditioner 101 of this embodiment.

[0038] Such as figure 1 As shown, the air conditioner 101 has a scroll compressor S (hermetic electric compressor), a four-way valve 102, an expander and other cooling and heating throttling devices 103, an indoor heat exchanger 104, and an outdoor heat exchanger 105 according to regulations. The pipe 106 is connected a...

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PUM

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Abstract

The invention provides a closed motor compressor which can fully decrease oil content of a refrigerant discharged from a closed container. The scroll compressor (S) is characterized in that: an insulator casing (26) is provided with an inner periphery (26c) formed on a shaft side of a rotor, an inner wall (27) which erects from the inner periphery (26c) to the direction in which a stator removes and forms throughout a whole periphery of the inner periphery (26c), a plurality of raised pieces (28) which erect from the inner periphery (26c) in the direction opposite to the erection direction of the inner wall (27), and a rib (29) which is arranged throughout the inner peripheral surfaces (28a) of the raised pieces (28) from the inner peripheral surface (27a) of the inner wall (27).

Description

technical field [0001] The present invention relates to a hermetic electric compressor and an air conditioner including the hermetic electric compressor. Background technique [0002] Conventionally, there is known a hermetic electric compressor in which oil stored in the bottom of an airtight container is supplied to a bearing portion through a through-hole provided in a crankshaft that transmits the rotational force of the motor portion to the compression mechanism portion. Wait. The refrigerant compressed by the compression mechanism passes through an air gap or the like formed between the stator and the rotor of the electric motor, and is discharged from the discharge pipe to the outside of the airtight container. The oil supplied to the bearing portion etc. flows down and is stored again at the bottom of the airtight container. [0003] However, in a refrigerating cycle using such a hermetic electric compressor, miniaturized (atomized) oil is carried along with the re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C23/02F04C29/02H02K5/08
Inventor 渕野大我向井有吾新村修平
Owner HITACHI JOHNSON CONTROLS AIR CONDITIONING INC