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
CN1397734AInactive Publication Date: 2003-02-19PANASONIC CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PANASONIC CORP
Publication Date
2003-02-19
Estimated Expiration
Not applicable · inactive patent

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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.
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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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