Small pump, cooling system and portable instrument

A technology for cooling systems and small pumps, which is applied to pumps, pump components, variable capacity pump components, etc. It can solve the problems of small discharge flow and increase the diaphragm area, and achieve the effect of large discharge flow and stable discharge flow characteristics

Inactive Publication Date: 2003-02-19
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the above-mentioned diaphragm-type small pump of the prior art, compared with a pump in which the rotary motion of the motor is converted into reciprocating motion by a motion conversion mechanism, and the diaphragm is driven, although its shape can be reduced very small, it is difficult to Increase the area of ​​the diaphragm, so the discharge flow rate as the capacity of the pump is quite small
For example, using a ユニモルフ piezoelectric vibrating plate with a diameter of 25mm as the driving source, when driving with AC 100Vrms, when driving with 60Hz, only 30cm can be obtained. 3 Flow rate around / min

Method used

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  • Small pump, cooling system and portable instrument
  • Small pump, cooling system and portable instrument
  • Small pump, cooling system and portable instrument

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Embodiment Construction

[0053] Hereinafter, the present invention will be described in more detail using embodiments.

[0054] (first implementation)

[0055] A first embodiment of the present invention will be described below with reference to the drawings.

[0056] figure 1 is a schematic sectional view of the small pump 100 according to the first embodiment of the present invention. The small pump 100 basically includes a small pump unit 101 and an air bubble trap 40 . The small pump unit 101 has the following parts: the suction flow path 70a through which the fluid flows in; the discharge flow path 70b through which the liquid flows out; the pressurization chamber 50 provided between the suction flow path 70a and the discharge flow path 70b; The piezoelectric vibrating plate (movable member) 30 that changes the volume of the chamber 50; is provided on the inflow passage into the pressurization chamber 50, and prevents the liquid flowing into the pressurization chamber 50 from the suction flow ...

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Abstract

A miniature pump 100 includes a miniature pump portion 101 including a suction passage 70a through which a liquid flows in, and a discharge passage 70b through which the liquid flows out, and a bubble trap portion 40 for blocking an entry of air bubbles into the miniature pump portion 101. Since the bubble trap portion 40 prevents the entry of air bubbles into the miniature pump portion 101, a deterioration of pump characteristics owing to the entry of air bubbles can be suppressed, making it possible to obtain a miniature pump that achieves both a large discharge flow rate and stable discharge flow rate characteristics.

Description

technical field [0001] The present invention relates to a small pump that can be used in cooling systems and the like, and particularly relates to a small pump with improved stable discharge characteristics. In addition, it also relates to a cooling system and a portable instrument using the small pump of the present invention. Background technique [0002] For the diaphragm-type small-sized pump in the prior art, for example, it has been proposed to achieve ultra-miniaturization by using a vibrating plate composed of a piezoelectric element such as PZT. Figure 18 is an example of it. [0003] 300 in the figure is a piezoelectric vibrating plate composed of a piezoelectric substrate 310 and a vibrating plate 320 , 330 is a suction and discharge valve for controlling the flow of liquid, and 340 is a casing forming the pressurization chamber 500 and the flow path. The piezoelectric vibrating plate 300 forming a diaphragm is constructed by pasting the piezoelectric substrate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B43/04F04B53/06
CPCF04B43/046F04B53/06
Inventor 小松敦冈野祐幸今田胜巳二宫彻足立祐介
Owner PANASONIC CORP
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