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US 2001/0043864 A1Published application
Fluid discharge device and fluid discharge method
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsTeruo Maruyama, Takashi Sonoda
Life of this patent
Estimating the term…
Abstract
The fluid discharge device includes an axial drive device for giving an axial relative displacement to between a piston and a cylinder, a device for giving rotary motion, and a device for pressure feed of fluid. The ON/OFF control of discharge flow rate can be fulfilled by changing the fluid resistance of the discharge passage with the axial drive device.
Claims46
A fluid discharge device which comprises:
- a shaft;
- a housing in which the shaft is housed, the housing having an inlet port and a discharge port dedicated for a discharge fluid and serving for allowing a pump chamber defined by the shaft and the housing to be communicated with outside;
- a device for relatively rotating the shaft and the housing;
- an axial drive device for giving an axial relative displacement between the shaft and the housing to change a gap between the shaft and the housing;
- and
- a device for pressure-feeding toward a discharge port side the fluid that has flowed into the pump chamber,
- wherein the gap between the shaft and the housing is changeable by the axial drive device so as to allow a fluid resistance between the pump chamber and the discharge port to be increased or decreased.
4 more elements
A fluid discharge method comprising:
- controlling discharge flow rate by a combination of rotational speed control of a motor and fluid resistance control performed by relative movement of a shaft and a housing, for housing the shaft, to change a gap between the shaft and the housing so as to allow a fluid resistance between a pump chamber, defined by the shaft and the housing to be communicated with outside, and a discharge port of the housing to be increased or decreased.
A fluid discharge device which comprises:
- a shaft;
- a housing for housing the shaft, the housing having an inlet port and a discharge port dedicated for a pressurized fluid and serving for allowing a pump chamber defined by the shaft and the housing or by the shaft and the sleeve to be communicated with outside;
- a device for rotating the shaft and the housing relative to each other;
- a sleeve in which the shaft is housed or which has an opposing face opposing to the shaft at at least part thereof;
- and
- an axial drive device placed between the housing and the sleeve or placed on either the housing or the sleeve and serving for giving an axial relative displacement between the shaft and the sleeve,
- wherein a gap between the shaft and the sleeve is changeable by the axial drive device so that a fluid resistance between the pump chamber and the discharge port can be increased or decreased.
4 more elements
A fluid discharge method comprising:
- preparatorily programming coating quantities of discharge fluid necessary for individual coating-targeted sites;
- and
- controlling a discharge flow rate of the discharge fluid by an axial relative displacement between a shaft and a sleeve for housing the shaft so that a gap between the shaft and the sleeve is changeable by the axial relative displacement so that a fluid resistance between a pump chamber, defined by the shaft and a housing or by the shaft and the sleeve to be communicated with outside, and a discharge port of the housing can be increased or decreased.
A fluid discharge device comprising:
- a piston driven in a rectilinear direction by a first actuator;
- a housing for housing therein the piston, the housing having an inlet hole and a discharge hole that are provided for a discharge fluid and formed in the housing, a pump chamber that is formed between the piston and the housing and communicates with the inlet hole and the discharge hole;
- a cylinder arranged coaxially with the piston;
- and
- a second actuator for giving a relative rotary motion between the piston and the cylinder,
- wherein the relative rotary motion or rectilinear motion of the piston to the cylinder exerts a pumping action on the pump chamber, and the first actuator is moved or extended and contracted externally by an electromagnetic non-contact electric power discharge device.
3 more elements
A fluid discharge method comprising:
- opening and closing an inlet port or a discharge port outlet of a flow passage by a relative rotary motion between a piston driven by an electromagnetostrictive actuator and a housing that houses therein the piston;
- and
- discharging a discharge fluid by expanding and contracting the electromagnetostrictive actuator externally by supplying electromagnetic non-contact electric power.
Dependencies are inferred from the claim text.