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Electromagnetic pump

A technology of electromagnetic pump and electromagnetic coil, applied in the field of electromagnetic pump

Active Publication Date: 2010-09-22
SHINANO KENSHI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to determine whether the change in the magnetic flux density detected by the magnetic sensor is caused by the reciprocating motion of the movable member 101 or by the excitation of the electromagnetic coils 106a, 106b.

Method used

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  • Electromagnetic pump
  • Electromagnetic pump
  • Electromagnetic pump

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Refer to below Figure 2 ~ Figure 5 The structure of the reciprocating motion detection part of the above-mentioned electromagnetic pump movable member and a preferred embodiment of the detection operation will be described. in figure 2 In this case, an air-core detection coil 53 for detecting the reciprocation of the movable element 10 is embedded coaxially with the electromagnetic coils 50a and 50b around the cylinder. Specifically, the detection coil 53 is fitted around the cylinder adjacent to both end surfaces in the axial direction of the electromagnetic coil 50a and the electromagnetic coil 50b.

[0047] Figure 3 ~ Figure 5 It shows the state of the magnetic flux acting on the detection coil 53 according to the operating position of the movable element 10 when the movable element 10 reciprocates. image 3 Indicates the state when the movable element 10 is displaced upward within the movable range, Figure 4 Indicates the state when the movable member 10 is displac...

Embodiment 2

[0049] Refer to below Image 6 Another example of the reciprocating motion detection unit of the movable element of the electromagnetic pump will be described. For and figure 2 The same parts in the description will be described with the same component symbols. in Image 6 In this case, the detection coil 53 is fitted around the cylinder adjacent to both end faces in the axial direction of the electromagnetic coil 50a and the electromagnetic coil 50b, which is the same as before. In this embodiment, yokes 26a and 26b made of magnetic materials are provided on both ends of the detection coil 53 in the axial direction, and outer yokes 52 are provided on the outer peripheral surface of the detection coil 53. In this way, the magnetic flux generated from the movable element 10 forms a magnetic circuit through the yoke 26a, the outer yoke 52, and the yoke 26b. In this way, since the magnetic flux interconnected with the detection coil 53 in the magnetic flux generated from the mov...

Embodiment 3

[0051] Refer below Figure 7 and Figure 8 , Describe the application example of the reciprocating motion detection of the movable part of the electromagnetic pump. For and figure 2 The same parts in the description will be described with the same component symbols. This embodiment is characterized in that the flow rate of the pump is detected based on the induced voltage detected by the detection coil 53. That is, the flow rate of the pump is the product of the reciprocating speed V of the movable element 10 and the cross-sectional area S of the movable element 10. The greater the speed V of the reciprocating movement of the movable member 10, the greater the flow rate of the pump, and thus the induced voltage of the detection coil also increases. Thus, in Figure 7 In this case, the flow rate of the pump can be derived based on the amplitude of the induced voltage generated on the detection coil 53.

[0052] In addition, in Figure 8 In this case, it is also possible to set ...

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PUM

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Abstract

An electromagnetic pump capable of highly precisely detecting an operating position of a movable element without enlarging the device. A hollow-core detecting coil (53) for detecting reciprocating motion of a movable element (10) is fitted in around a cylinder so as to be coaxial with electromagnetic coils (50a, 50b).

Description

(1) Technical field [0001] The invention relates to an electromagnetic pump, in particular to a compact electromagnetic pump for conveying gas, liquid and other fluids. (2) Background technology [0002] The applicant of the present invention previously proposed a miniaturized and thinned electromagnetic pump. In this electromagnetic pump, a movable member made of a magnetic material capable of free reciprocating motion is accommodated in the cylinder chamber on the side of the fixed member. By energizing the electromagnetic coil embedded around the cylinder, of the pump chambers formed between both sides in the moving direction of the movable member and both end surfaces of the cylinder, one of the pump chambers sucks fluid from the outside through the first valve and passes through the second valve. The two valves send the fluid to the outside, and the other pump chamber also has the same pumping action (refer to Patent Document 1). exist Figure 11 Among them, the magnet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B49/06F04B17/04
CPCF04B49/065F04B17/042F04B2201/0201
Inventor 矢口文博
Owner SHINANO KENSHI