Fluid agitation apparatus for reducing temperature fluctuation and thermostatic apparatus

• US 9,022,641 B2
• Filed: 11/27/2012
• Issued: 05/05/2015
• Est. Priority Date: 12/06/2011
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Nomura, Masaki, Nakatsugawa, Masashi
• Primary Examiner(s): Sorkin, David
• Assistant Examiner(s): RASHID, FAZLE A
• Application Number:
  US13/685,854
• Publication Number:
  US 20130142008A1
• Time in Patent Office: 889 Days
• Field of Search: 366337-338, 366/165.2
• US Class Current: 366/165.2
• CPC Class Codes: B01F 2025/913 Vortex flow, i.e. flow spiraling in a tangential direction and moving in an axial direction
• CPC Class Codes: B01F 2215/0431 Numerical size values, e.g. diameter of a hole or conduit, area, volume, length, width, or ratios thereof
• CPC Class Codes: B01F 2215/045 Numerical flow-rate values
• CPC Class Codes: B01F 2215/0472 Numerical temperature values
• CPC Class Codes: B01F 23/10 Mixing gases with gases
• CPC Class Codes: B01F 25/4321 the subflows consisting of at least two flat layers which are recombined, e.g. using means having restriction or expansion zones
• CPC Class Codes: B01F 25/4335 Mixers with a converging-diverging cross-section
• CPC Class Codes: B01F 27/05 Stirrers

Abstract

Provided are a fluid agitation apparatus using a structure which is simple in shape and short in a fluid passage direction without a movable part so as to produce a sufficient effect from the viewpoint of reducing temperature fluctuation, and a thermostatic apparatus using the fluid agitation apparatus. The fluid agitation apparatus is installed in a fluid passage and includes, in an order from an upstream side thereof: a dividing part for dividing a flow of a fluid into a plurality of flows; a circumvolving part for circumvolving the fluid about an axis in a flow direction of the fluid; and an accelerating part for increasing a flow rate of the fluid.

Claims

1. A fluid agitation apparatus for reducing temperature fluctuation, which is installed in a fluid passage, the fluid agitation apparatus comprising:

a dividing part for dividing a flow of the fluid into a plurality of flows by means of a plurality of opening planes formed by closing a central portion of the fluid passage with a first closing surface;

a circumvolving part connected to a downstream side of the dividing part, for circumvolving the fluid about an axis in a flow direction of the fluid, in which a second closing surface is disposed in a direction perpendicular to the fluid passage direction with only a central part of the fluid passage being opened, a rectangular plate is disposed in a direction parallel to the fluid passage direction, and only one end of the rectangular plate is in contact with an inner wall surface of the circumvolving part; and

an accelerating part connected to a downstream side of the circumvolving part and connected to the opening formed only at the central part of the fluid passage of the circumvolving part, for increasing a flow rate of the fluid.

2. A thermostatic apparatus, comprising the fluid agitation apparatus for reducing temperature fluctuation according to claim 1.

3. The fluid agitation apparatus for reducing temperature fluctuation according to claim 1, wherein the accelerating part has a cross section of a circular shape.

4. The fluid agitation apparatus for reducing temperature fluctuation according to claim 1, wherein the circumvolving part has a cross section of a circular shape.

5. The fluid agitation apparatus for reducing temperature fluctuation according to claim 1, wherein the circumvolving part has a cross section of a polygonal circular shape.