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Air compressor

An air compressor and compressed air technology, applied in mechanical equipment, machines/engines, liquid variable capacity machinery, etc., can solve problems such as large impact on equipment service life, high motor starting current, and inaccurate pressure control. The effect of stable and reliable operation of the equipment, reduction of starting current and accurate pressure control

Inactive Publication Date: 2009-07-29
QINGDAO D& D ELECTRO MECHANICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The defect of the air compressor in the prior art is that the pressure cannot be set or adjusted in a large range, and the pressure control is not accurate enough; its motor is full speed and starts with load when it is working, so the starting current of the motor is high and the power consumption is high. Large capacity, high operating cost, and great impact on the service life of the equipment
The pressure relay control is a contact circuit control, and its defects are obvious

Method used

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  • Air compressor

Examples

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Effect test

Embodiment 1

[0018] Embodiment 1 is the implementation of using an electronically controlled unloading valve:

[0019] The motor (1) and the air compressor (3) adopt integral machines, which are fixed on the air storage tank (13), and the compressed air outlet pipe (4) of the air compressor is connected to the inlet of the unloading valve (11), and the unloading valve (11) ) is connected to the gas storage tank (13) via the tee pipe (14); the other port of the tee pipe (14) is connected to the pressure sensor (9), and the pressure sensor signal control circuit (12) is connected to the controller (6), The controller (6) is provided with a power cord and a power plug (10); the motor (1) is connected by the motor power cord (2) and the controller (6); the unloading valve signal control circuit (5) of the unloading valve (11) ) is connected to the controller (6); the controller (6) is arranged on the top of one end of the gas storage tank (13); the controller (6) is a single-chip microelectron...

Embodiment 2

[0020] Embodiment 2 is the implementation of using automatic unloading valve:

[0021] Since the present embodiment adopts an automatic unloading valve, the unloading valve signal control circuit (5) in the above-mentioned embodiment 1 is omitted, and the control circuit of the controller (6) can also be simplified a little, and the others are the same as in the first embodiment.

Embodiment 3

[0022] Embodiment 3: on the basis of embodiments 1 and 2, a frequency conversion circuit and a frequency conversion control circuit are added to the controller (6). According to the load of the air compressor, controlling the speed of the motor will greatly improve the performance indicators of the air compressor.

[0023] The prototypes of the above-mentioned embodiments 1, 2, and 3 can not only accurately control the output pressure, realize reliable control of the output pressure within the set upper limit pressure and lower limit pressure range, but also can display the current output pressure in numbers, which is clear and intuitive . The structure and production process are simple, the reliability is high, and the production cost is low. It can be widely used in industrial and agricultural production, national defense, scientific research and other fields.

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Abstract

The present invention relates to an air compressor with pressure automatic control. It is formed from air compressor, air storage tank and controller. On the compressed air inlet pipe of air storage tank a three-way pipe is set, three ports of said three-way pipe are respectively connected with unloading valve outlet, pressure sensor and air storage tank; the unloading valve inlet is connected with compressed air outlet pipe of air compressor; the pressure signal output end of said pressure sensor is connected with controller. Besides, said invention also provides the concrete working principle of said air compressor and its concrete operation method.

Description

technical field [0001] The invention relates to the technical field of air compressors, in particular to an air compressor with automatic pressure control. Background technique [0002] Air compressors have been widely used in industry, agriculture, transportation, national defense, and daily life. Therefore, there are higher requirements for the reliability, ease of use, and energy-saving effect of air compressors. [0003] The compressed air output of the air compressor in the prior art is to control the pressure to fluctuate within a limited range. Usually, a pressure relay or a voltage regulator is used to control the starting and closing of the motor, and the output pressure can generally be controlled within a certain range. When the output pressure drops to a certain value, the motor starts to run, and the air compressor increases the pressure in the air storage tank; The air pressure is kept within a certain pressure range. [0004] The defect of the air compresso...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B41/02F04B49/00F04B49/03F04B49/08F04B49/06
Inventor 张永升李振会任东良
Owner QINGDAO D& D ELECTRO MECHANICAL TECH
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