Float valve apparatus
AssigneePiolax, Inc.
InventorNobuhiro Hirata
Life of this patent
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Abstract
According to an aspect of the present invention, there is provided a float valve apparatus including: a housing including: a partition wall dividing an internal space into lower and upper spaces and having an opening therein; a ventilation pipe communicating the upper space with an outside; a valve seat formed at the opening; and a communication hole communicating the lower space with the outside; a float that is valve vertically slidably movable in the lower space and that upwardly floats in accordance with liquid flowing thereinto to open and close the opening; an upward urging spring urging the float valve from the housing toward the opening; and a support spring disposed inside the upward urging spring to support the float valve to not contact with a bottom surface of the housing.
Claims6
A float valve apparatus comprising:
- a housing including:
- a partition wall that divides an internal space of the housing into a lower space and an upper space and that has an opening formed therein;
- a ventilation pipe that is formed to communicate the upper space with an outside;
- a valve seat that is formed at the opening of the partition wall;
- and
- a communication hole that is formed to communicate the lower space with the outside;
- a float valve that is disposed to be slidably movable in a vertical direction in the lower space and that is configured to be upwardly floated by liquid flowing into the lower space through the communication hole so as to open and close the opening;
- an upward urging spring that is disposed between a lower surface of the float valve and a bottom surface of the housing to urge the float valve toward the opening;
- and
- a support spring that is disposed inside the upward urging spring to support the float valve so as to be prevented from contacting with the bottom surface of the housing in a state where the float valve is moved to a lower-most position.
Dependencies are inferred from the claim text.