Inverter-integrated electric compressor

A technology for electric compressors and inverters, which is applied to machines/engines, liquid fuel engines, electric components, etc., can solve the problems of reduced noise suppression, longer wiring components, and increased inductive components, and achieves noise suppression. Improved effect, downsizing, and effective cooling

Active Publication Date: 2013-10-09
MITSUBISHI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when such a noise suppressing component is mounted on the control circuit board using the installation structure as in Patent Documents 1 and 2, the distance between the noise suppressing component and the control circuit substrate increases, and the pin terminals for electrical connection, bus bars, etc. The length of the wiring part becomes longer
Therefore, there is a possibility that the inductive component will increase, and the noise suppression effect will decrease. In order to compensate for this, the capacity of the noise suppression part must be increased, which also hinders the compactness of the inverter.

Method used

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no. 1 approach

[0057] Figure 1 ~ Figure 4 Showing the first embodiment of the present invention, figure 1 It is a longitudinal sectional view for explaining a schematic structure of the inverter-integrated electric compressor according to the first embodiment of the present invention. This inverter-integrated electric compressor is a compressor used in a vehicle air conditioner, and its drive rotation speed is controlled by an inverter.

[0058] The inverter-integrated electric compressor 1 has an aluminum alloy casing 2 constituting its outer casing, and the casing 2 sandwiches a bearing casing 5 between a compressor-side casing 3 and a motor-side casing 4 and screws it. 6. It is formed by fastening and fixing the compressor side casing 3 and the motor side casing 4.

[0059] A known scroll compression mechanism 8 is housed in the compressor-side housing 3 . In addition, a stator 11 and a rotor 12 constituting the motor 10 are housed in the motor-side housing 4 . The scroll compression...

no. 2 approach

[0080] Figure 5 It is a longitudinal sectional view showing an inverter-integrated electric compressor according to a second embodiment of the present invention. In this inverter-integrated electric compressor 51, the structure other than the inverter 52 is the same as that of figure 1 Since the inverter-integrated electric compressor 1 of the first embodiment shown is the same, the same reference numerals are assigned to the respective parts, and description thereof will be omitted.

[0081] This inverter-integrated electric compressor 51 is a type in which an inverter box 53 accommodating an inverter 52 is provided on the rear end surface of the casing 2 (motor-side casing 4 ). The main reason for providing the inverter box 53 on the rear end surface of the casing 2 in this way is that when the inverter-integrated electric compressor 51 is installed in the engine room of a hybrid vehicle or an electric vehicle, the inverter box 53 In the case of an elongated shape that do...

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Abstract

Provided is an inverter-integrated electric compressor that utilizes an inexpensive and simple structure to effectively cool high heat-producing electrical components disposed on a control circuit board, and that can simultaneously be made more compact and lighter. A control circuit board (25) constituting an inverter (21) serves as a thermally-conductive substrate. One surface of the control circuit board (25) is installed in a heat transferable manner on a heat-dessipating planar part (31) disposed on a housing (2), white heat-producing electrical components (39) are disposed in a heat transferable manner on the other surface of the Control circuit board (25). The control circuit board (25) is provided with a substrate body (41) comprising an insulator, and heat-conducting through members (42) comprising a good thermal conductor filled through in the thickness direction of the substrate body (41), One end of the heat-conducting through members (42) is positioned in a heat transferable manner on the heat-dissipating planar part (31), and the electrical components (39) are positioned in a heat transferable manner on the other end.

Description

technical field [0001] The present invention relates to an inverter-integrated electric compressor particularly suitable for use in a vehicle air conditioner, in which an inverter is provided inside an inverter box provided on the outer periphery of a casing. Background technique [0002] In recent years, the development and market launch of electric vehicles that run by the power of electric motors, such as electric vehicles, hybrid vehicles, and fuel cell vehicles, have progressed rapidly. In such an air conditioner for an electric vehicle, an electric compressor using an electric motor is often used as a compressor that compresses and sends out a refrigerant. [0003] In addition, in the air-conditioning device of an automobile traveling by the power of an internal combustion engine, an electric compressor is also used instead of a compressor driven by an internal combustion engine for traveling and by means of an electromagnetic clutch, so as to improve resulting in red...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B39/00H02K9/22H02K11/00
CPCH02K9/22H02K11/0073F04C29/047F04C23/008H02K5/22F04C18/0215F04C2240/808F04B53/08F04B39/121H02K11/33H02K9/223H02K11/05
Inventor 中神孝志中野浩儿上谷洋行鹰繁贵之
Owner MITSUBISHI HEAVY IND LTD
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