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Sealed type electric compressor

An electric compressor, hermetically sealed technology, used in machines/engines, liquid fuel engines, mechanical equipment, etc., can solve the problems of short working life, shape restriction of glass terminal pressure vessels, increase of signal lines, etc., to achieve effective heat transfer area The effect of enlargement, miniaturization and capability enhancement

Inactive Publication Date: 2006-01-18
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these communication devices have problems such as short working life compared to the electrical insulation, vibration, temperature environment, and dusty installation environment of the compressor.
In addition, if the same glass terminal type signal terminal as the sealed power supply terminal is provided, the number of signal lines will increase, and there will be problems such as the need for a certain size of the glass terminal but the restriction of the shape of the pressure vessel.
In addition, after installing the motor drive circuit inside the airtight container, there will be problems such as having to prepare connectors and terminals corresponding to the models and functions of a large number of air conditioners and compressors.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] figure 1 It is a sectional view of the hermetic electric compressor in Embodiment 1 of the present invention, figure 2 is a sectional view showing the detailed structure of the motor drive assembly of the hermetic electric compressor, image 3 (a) is a sectional view showing the detailed structure near the communication device of the hermetic electric compressor, image 3 (b) is a plan view showing the detailed structure of the communication device of the hermetic electric compressor.

[0038] The sealed electric compressor 10 is a low-pressure compressor, and an upper casing 51 and a lower casing 52 form a sealed container. The airtight container is provided with: a compression part 11 , a motor 12 , and a motor drive assembly 13 . The motor driving assembly 13 is arranged at the uppermost part of the sealed container, and is used for supplying power to the motor 12 and controlling its operation. The upper case 51 and the lower case 52 are joined by a welding por...

Embodiment 2

[0055] pass below Figure 5 Next, a hermetic electric compressor according to Embodiment 2 of the present invention will be described. Here, the same reference numerals are used for the same components as those in Embodiment 1, and repeated description thereof will be omitted. In addition, since operations other than the communication device 22 are basically the same as those in the first embodiment, detailed description thereof will also be omitted.

[0056] Figure 5 It is a cross-sectional view of the detailed structure of the communication device 22 installed in the upper case 51 . In Embodiment 2 of the present invention, the communication method in the communication device 22 adopts the electromagnetic field signal method, which includes: an input and output terminal located on the side of the motor drive assembly 13 for sending / receiving control signals in the form of electromagnetic field signals That is, an internal transmission / reception terminal 93 ; an external tr...

Embodiment 3

[0061] pass below Figure 6 , 7 and 8 to describe the hermetic electric compressor in Embodiment 3 of the present invention. In Embodiment 3 of the present invention, the communication method of the communication device 22 adopts a vibration signal transmission method. Here, the same components as those in Embodiment 1 are denoted by the same symbols, and their repeated descriptions are omitted. In addition, since operations other than the communication device 22 are basically the same as those in the first embodiment, detailed description thereof will also be omitted.

[0062] Figure 6 A detailed cross-sectional view of the communication device 22 mounted on the upper case 51 in Embodiment 1 of Embodiment 3 is shown in . This communication device 22 comprises: can send / receive the input-output terminal (namely internal sending / receiving end) 103 of the motor drive assembly 13 of the control signal of vibration signal form, can send / receive the input-output terminal ( Th...

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PUM

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Abstract

To provide a hermetic electric compressor making an outdoor unit compact by storing a drive circuit unit in a hermetic vessel and surely performing transmission and reception of signals with outside.a compressor unit (11); a motor (12); and a motor driving module (13) having a power unit and a control unit, for operating the motor (12), wherein the compressor unit (11), the motor (12) and the motor driving module (13) are accommodated in the sealed vessel. The sealed type electric compressor allows the size of an outdoor unit to be reduced by accommodating the motor driving unit in the sealed vessel and reliably performs a signal transmitting / receiving operation to / from an exterior.

Description

technical field [0001] The present invention relates to a hermetic electric compressor installed in a refrigerating device or an air conditioner, more specifically, to a hermetic electric compressor in which a motor drive assembly for controlling the operation of the motor is installed in a hermetic container. Background technique [0002] In recent years, there has been an increasing demand for small size and energy-saving performance of home air conditioners and the like. Therefore, in the outdoor unit constituting a part of the air conditioner, it is necessary to increase the heat transfer area of ​​the outdoor heat exchanger to improve efficiency, and at the same time to reduce the size of the outdoor unit. On the other hand, compressors installed in outdoor units are also required to be compact and high-performance. [0003] In an air conditioner using an AC mains power supply and using a compressor driven by an inverter, the drive circuit unit for the compressor is pr...

Claims

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Application Information

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IPC IPC(8): F04B49/06F04C28/00H04Q7/22F24F11/00
CPCF04C18/0215F04C2240/808F04C23/008F04C2240/30F04C2240/803F04C2270/90
Inventor 小川正则吉椿纪史
Owner PANASONIC CORP
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