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Linear compressor driving device, medium and information assembly

A technology of linear compressors and driving devices, which is applied in the direction of machines/engines, electrical components, mechanical equipment, etc., and can solve problems such as increasing the volume of displacement measuring devices

Inactive Publication Date: 2008-01-02
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the volume of the linear compressor alone is not only increased by an amount corresponding to the volume of the displacement measuring device, but also the displacement measuring device itself must be packaged in the casing of the linear compressor, thereby causing a problem that the temperature, pressure Under such harsh working conditions, the working reliability of the displacement measuring device must be ensured

Method used

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  • Linear compressor driving device, medium and information assembly
  • Linear compressor driving device, medium and information assembly
  • Linear compressor driving device, medium and information assembly

Examples

Experimental program
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Embodiment 1

[0032] First, the structure of the linear compressor driving device of Embodiment 1 will be described with reference to FIG. 1 (block diagram of the device).

[0033] The linear compressor drive device includes a DC power supply 5, a current detection device 8, a voltage detection device 10, an output power calculation device 11, an inverter controller 9, an inverter 6, a current amplitude determination device 2, and a drive frequency determination device 4 and input current waveform command device 3. The device including the inverter controller 9 and the input current waveform command device 3 corresponds to the inverter controller of the present invention.

[0034] Next, the structure of the linear compressor driving device of the present invention will be described in detail.

[0035] The DC power supply 5 supplies a DC voltage to the inverter 6 and generally includes an AC power supply, a diode bridge rectifying the alternating current from the AC power supply, and a smoo...

Embodiment 2

[0099] Next, the structure and operation of the linear compressor driving device of Embodiment 2 will be described with reference to FIG. 6, which is a block diagram of the device.

[0100] The structure of the linear compressor driving device in this example is basically the same as that in Embodiment 1, but the voltage detection device includes a DC voltage detection device 12 and an output voltage calculation device 13 .

[0101] The above embodiment 1 directly detects the output voltage of the inverter. However, the ground of the inverter controller is at the same potential as the ground of the DC input voltage. Accordingly, detecting the output voltage of the inverter requires a transformer or an optocoupler as an isolated circuit component. According to Embodiment 2, in order to reduce the number of components required for the control circuit and their size, the output voltage of the inverter is calculated indirectly to eliminate these components.

[0102] The DC volta...

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PUM

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Abstract

A linear compressor driving device for linear compressor driving a piston in a cylinder by means of a linear motor to generate a compressed gas, has an inverter for outputting an alternating current to be supplied to the linear motor; current detecting means for detecting an output current from the inverter; voltage detecting means for detecting an output voltage from the inverter; current amplitude value determining means for determining a current amplitude value of the output current; output power calculating means for calculating an output power from the inverter based on the detected output current and the detected output voltage; frequency determining means for determining a frequency of the output current such that the output power is maximum; and inverter controller for controlling the inverter based on the determined current amplitude value and the determined frequency.

Description

[0001] This application is a divisional application of the application with application number 00135079.X, application date: 2000.11.30, and titled "Linear Compressor Drive Device, Media and Information Components". technical field [0002] The invention relates to a driving device of a linear compressor, which uses a linear motor to reciprocate a piston in a cylinder to generate compressed gas in a compression chamber formed by the cylinder and the piston. Background technique [0003] As is well known, a linear compressor can generate compressed gas by utilizing the elasticity of a mechanical elastic member or compressing gas. [0004] Therefore, the structure and operation of a conventional linear compressor using a spring as an elastic member will be described with reference to FIG. 7, which shows the structure of the conventional linear compressor. [0005] The cylinder 60 clamps the piston 61 so that the piston 61 can slide along its axial direction. A magnet 62 is fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B49/06F04B35/04H02P27/04
CPCF04B49/065F04B35/045F04B35/04
Inventor 植田光男吉冈包晴中田秀树长谷川宽
Owner PANASONIC CORP
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