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A reciprocating air pump and its control method

A reciprocating air pump technology, applied in pump control, pump testing, electrical components, etc., can solve the problem of reciprocating air pumps not working, and achieve the effect of simple external line connection, good flexibility, and high energy conversion efficiency

Active Publication Date: 2020-01-14
ZHUHAI MAOTIAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the reciprocating air pump in the prior art cannot work after a power failure, and propose a reciprocating air pump and its control method

Method used

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  • A reciprocating air pump and its control method
  • A reciprocating air pump and its control method
  • A reciprocating air pump and its control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In the reciprocating air pump of the present invention, the moving device includes an electromagnetic coil and a magnet. The electromagnetic coil generates an alternating magnetic field when the alternating current is connected to drive the magnet to reciprocate axially, thereby realizing the air pump suction and exhaust circulation. In this embodiment, the structure of the motion device of the reciprocating air pump is as figure 1 Shown. The permanent magnet 4 is installed on the moving part 3 of the pump core, and two ends of the moving part are installed with cups 2. The armature coil 1 is arranged at a position parallel to the direction of movement of the moving part. The armature coil merges and leads two control wires 5 to the driving device. In addition, a check valve 6 is provided on each cup to prevent backflow of gas.

[0043] Such as figure 2 As shown, when the driving device energizes the armature coil in the forward direction, the S pole formed on the armat...

Embodiment 2

[0067] Compared with Embodiment 1, the reciprocating air pump of this embodiment also has a soft start function, and its control method also has a soft start step. The soft start process is as Picture 8 , First initialize the air pump movement frequency to 50Hz, cycle T to 20ms, and control signal power-on time t 0 Is 2ms. Due to the short energization time, the armature coil excitation time is short and the working current is small. Then every 300ms, the energization time increases by 1ms, the magnetization time of the armature coil becomes longer and longer, and the average working current gradually increases until the energization time reaches the preset value t 1 , The working current reaches the preset value. Where t 0 1 <10ms. In this way, by gradually increasing the power-on time of the drive device, the soft start process of the air pump from a small current to a large current is realized.

[0068] In the reciprocating air pump and its control method of the embodiment...

Embodiment 3

[0070] Compared with Embodiment 1 and Embodiment 2, the reciprocating air pump of this embodiment adopts a full-bridge drive circuit controlled by a single-chip microcomputer. The control program output by the single-chip microcomputer can be controlled by changing the power-on time t of the control signal. The magnitude of the reciprocating motion of the air pump movement device, so as to realize the air volume and pressure output of the air pump, and provide a variety of different air volume and pressure output combinations.

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Abstract

The invention provides a reciprocating air pump. The reciprocating air pump comprises a driving device, a moving device and a conversion unit, wherein the driving device is used for supplying alternating current and driving the reciprocating motion of the moving device; the moving device is used for reciprocating to realize the circulation of air-sucking and exhausting of the air pump; the drivingdevice adopts direct current power supply or alternating current power supply; and the conversion unit is used for converting direct current into alternating current. Based on the reciprocating air pump, the invention further provides a control method of the reciprocating air pump. The reciprocating air pump and the control method thereof can continue to supply alternating current after failure of city power and drive the reciprocating motion of the moving device, thereby enabling the air pump to realize the circulation of air-sucking and exhausting.

Description

Technical field [0001] The invention relates to an air pump, in particular to a reciprocating air pump and a control method thereof. Background technique [0002] Most of the existing air pumps used in applications such as medical equipment and household fish tanks use reciprocating air pumps, that is, a magnet is driven to reciprocate through an electromagnetic coil to realize a cycle of suction and exhaust. However, the existing power drive device of the reciprocating air pump generally directly uses the commercial AC power, and uses the alternating magnetic field generated when the electromagnetic coil is connected to the AC power to drive the magnet to move repeatedly in the axial direction. Once the power is cut off, the air pump cannot work, causing a lot of inconvenience to the user. Although the UPS uninterruptible power supply on the market can continue to supply power after a power failure, it is large, heavy, and low in energy conversion efficiency. Generally, a UPS u...

Claims

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Application Information

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IPC IPC(8): F04B49/06F04B51/00H02M7/00
CPCF04B49/06F04B51/00H02M7/00
Inventor 李幽毅吕春晖刘源
Owner ZHUHAI MAOTIAN TECH
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