Filter apparatus

Patent metadata

Field	Value
Publication number	US-10441899-B2
Application number	US-201715598553-A
Country	US
Kind code	B2
Filing date	May 18, 2017
Priority date	May 27, 2016
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

A liquid is made to flow into a filter case from a tangential direction at any point on a side surface of the filter case and produces a swirling flow. Bubbles collected in a center of the swirling flow are retained by a retainer plate, thereby removing the bubbles from the liquid. A filter element filters the liquid from which the bubbles were removed.

First claim

The invention claimed is:

1. A filter apparatus, comprising:
a filter case having a bottomed substantially cylindrical shape;
a bubble removing portion including
an inflow pipe that is provided to a side surface of the filter case, wherein the inflow pipe is configured to cause a liquid to flow into the filter case from a tangential direction at any point on the side surface of the filter case, and produce a swirling flow in the liquid that flowed into the filter case, and
a retainer plate that is provided to an interior of the filter case, wherein the retainer plate is configured to retain bubbles collected in a center of the swirling flow by the swirling flow, and that the retainer plate is positioned on an upper side of the inflow pipe in a height direction;
a filter element that is provided to the interior of the filter case and comprises a filtration material, wherein the filtration material is configured to filter the liquid that passes through the bubble removing portion; and
an outflow pipe that has a substantially cylindrical shape and communicates with a hollow portion of the filter element,
wherein the inflow pipe is provided in a neighborhood of a bottom surface of the filter case, and the retainer plate is provided to a lower side of the filter element.

2. The filter apparatus according to claim 1 , wherein
the filter element comprises an upper plate that covers an upper end surface of the filtration material, and a lower plate that covers a lower end surface of the filtration material and is the retainer plate.

3. The filter apparatus according to claim 1 , wherein
a diameter of the retainer plate is greater than a diameter of the filtration material.

Assignees

• Yamashin Filter Corp

Inventors

• Okamoto Mitsunobu
• Ishizuka Makoto

Classifications

• B01D35/0276

  Filtering elements with a vertical rotation or symmetry axis mounted on tanks or reservoirs · CPC title

• B01D29/114

  arranged for inward flow filtration (B01D29/15, B01D29/33 take precedence) · CPC title

• B01D29/908

  provoking a tangential stream · CPC title

• B01D19/0031

  by filtration · CPC title

• B01D29/925

  containing liquid displacement elements or cores · CPC title