Diaphragm type electromagnetic air pump
A diaphragm type, electromagnetic technology, applied in the direction of pumps, pump control, liquid variable capacity machinery, etc., can solve the problem of uncontrolled movement of the pull rod, and achieve the effect of improving safety and extending service life
Inactive Publication Date: 2013-01-23
SHANGHAI INST OF TECH
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Problems solved by technology
[0006] The present invention is aimed at the problems of the diaphragm failure and the out-of-control movement of the pull rod caused by the current diaphragm electromagnetic air pump. To detect rubber diaphragm and rod travel failure
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[0016] Such as figure 1 The schematic diagram of the internal structure of the diaphragm electromagnetic air pump is shown, including the permanent magnet 7 and the permanent magnet 12 embedded in the permanent magnet 7 and the permanent magnet 12 with equal parameters and coplanar electromagnetic coils fixed on the insulating skeleton 6 and 9 with equal parameters and opposite magnetic poles facing each other. 5 and 10, the micro-semiconductor refrigeration device 11 fixed on the insulating frame 9 of the pump body and located above the electromagnetic coil 10 and isolated from the air gap of the coil, the temperature sensor 3 outside the through hole 4 of the base 2, and the air cavity ends at the two ends of the pull rod respectively Cover 13 and 8. The pull rod 1 is isolated from the two electromagnetic coils 5, 10 by a uniform air gap, and the magnetic end faces of the two electromagnetic coils 5, 10 are always parallel to the magnetic end faces of the two permanent magne...
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The invention relates to a diaphragm type electromagnetic air pump. The diaphragm type electromagnetic air pump comprises a pump body, a base, a radiator and a measurement and control unit, wherein the pump body comprises a pump cover, air cavity end covers at two ends, pull rods which are positioned between the two air cavity end covers and provided with two permanent magnets with equal parameters and coplanar opposite magnetic poles, two electromagnetic coils which are respectively fixed on two insulating frameworks and are provided with equal parameters and opposite magnetic poles, a miniature semiconductor refrigerating device which is fixedly connected with the insulating frameworks of the pump body and is in air-gap isolation with coils on the insulating frameworks, and differential capacitors which are respectively positioned in the two air cavity end covers; signals of a temperature sensor on the outer side of a through hole of the base and signals of the differential capacitors are transmitted into the measurement and control unit; and the measurement and control unit outputs control signals to the miniature semiconductor refrigerating device. With the adoption of the diaphragm type electromagnetic air pump, the measurement and control of the air temperature in the pump and the detection of stroke faults of a conductive rubber diaphragm and the pull rods are realized, the operation safety of the pump is greatly improved, and the service life of the pump is prolonged.
Description
technical field [0001] The invention relates to an electromagnetic air pump, in particular to a diaphragm type electromagnetic air pump. Background technique [0002] Diaphragm electromagnetic air pumps have been widely used as low-pressure and small-flow air pressure sources in medical applications such as portable electric suction devices, tourniquets, and air mattresses. [0003] Usually, the diaphragm type electromagnetic air pump is under the action of alternating current, and the symmetrical electromagnetic coils on both sides of the tie rod generate alternating magnetic fields of different polarities, which respectively generate attractive and repulsive forces on the permanent magnets embedded in the tie rod with opposite polarities. The magnetic force drives the tie rod along its axial direction, and drives the diaphragm at both ends to reciprocate periodically with the alternating current, and uses external force to change the volume of the air cavity at the two end...
Claims
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IPC IPC(8): F04B45/047F04B49/10
Inventor 孙逊邓菲
Owner SHANGHAI INST OF TECH