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Sealed-type electric compressor

An electric compressor, airtight technology, applied in the direction of machine/engine, liquid fuel engine, mechanical equipment, etc., can solve the problem of difficult to reduce motor noise, high noise, etc., to reduce iron loss, reduce radiation noise, ease burning and embedding effect of stress

Inactive Publication Date: 2017-02-22
MITSUBISHI HEAVY IND THERMAL SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, as a compressor motor, a motor in which the coil winding wire is concentratedly wound to improve motor efficiency is used, but the noise generated by the concentrated winding motor is relatively large due to the electromagnetic excitation force, although it can be improved by designing the shape of the iron core, etc. Reduce the electromagnetic excitation force, but because the efficiency of the motor needs to be given priority, there is a situation that it is difficult to reduce the noise of the motor alone

Method used

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  • Sealed-type electric compressor
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Embodiment Construction

[0026] Below, refer to Figure 1 to Figure 3 , the embodiments according to the present invention will be described.

[0027] figure 1 shows a longitudinal sectional view of a hermetic electric compressor according to an embodiment of the present invention, figure 2 A schematic diagram of its A-A cross-section is shown in image 3 A schematic diagram of its B-B cross-section is shown in .

[0028] As the hermetic electric compressor 1 according to the present embodiment, a multi-cylinder rotary compressor is exemplified, but of course it is not limited thereto. The hermetic electric compressor 1 is provided with a cylindrical housing 2 whose upper and lower parts are sealed by cover plates 3 and 4, and is configured such that an electric motor 5 is provided at an upper part thereof, and an electric motor 5 is provided at a lower part thereof. 5 Driven compression mechanism (rotary compression mechanism) 6.

[0029] On the outer periphery of the lower part of the housing ...

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Abstract

The purpose of the present invention is to provide a sealed-type electric compressor that can easily reduce vibration and noise simply by changing the shape of a portion of a casing, without impacting in any way a compressor mechanism and an electric motor, or the performance and reliability thereof. Provided is the sealed-type electric compressor (1) in which an electric motor (5) and a compressor mechanism (6) are accommodated in a cylindrical casing (2), and the compressor mechanism (6) can be driven by the electric motor (5). Both-end portions (E1, E2) of a stator (12) of the electric motor (5) are shrink-fit, press-fit, or welded to the circular inner-circumferential surface of the cylindrical casing (2), and as a result, the electric motor is fixed and disposed. An intermediate portion (M) excludes the both-end portions (E1, E2) and the intermediate portion, as a whole or as a part excluding a contact portion, is not in contact with the casing (2).

Description

technical field [0001] The present invention relates to a hermetic electric compressor of the type in which an electric motor and a compression mechanism are accommodated in a cylindrical casing, and the compression mechanism is driven by the electric motor. Background technique [0002] As a compressor for a refrigerating / air-conditioning machine or various heat pumps, a hermetic electric compressor such as a rotary type or a scroll type in which an electric motor and a compression mechanism are accommodated in a cylindrical casing is used. In the hermetic electric compressor, in order to fix the electric motor inside the casing, the stator of the electric motor is caulked, press-fitted or welded to the inner peripheral surface of the cylindrical casing. In addition, as a compressor motor, a motor in which the coil winding wire is concentratedly wound to improve motor efficiency is used, but the noise generated by the concentrated winding motor is relatively large due to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C23/02F04B39/00F04B39/12F04C29/00
CPCF04B39/00F04C23/02F04C29/00F04B39/12F04B35/04F04B39/023F04B39/121
Inventor 药师寺俊辅小川真
Owner MITSUBISHI HEAVY IND THERMAL SYST
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