Fluid transporting device of a peristalic type with tube and push pin arrangement

• US 7,950,908 B2
• Filed: 01/24/2006
• Issued: 05/31/2011
• Est. Priority Date: 11/01/2005
• Status: Expired due to Fees

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Ushikoshi, Kenichi, Miyazaki, Hajime, Kawasumi, Kazuo
• Primary Examiner(s): Kramer; Devon C
• Assistant Examiner(s): Zollinger; Nathan
• Application Number:
  US11/795,994
• Publication Number:
  US 20080159890A1
• Time in Patent Office: 1,953 Days
• Field of Search: 417/474, 417/475, 417/476, 417/477.1, 417/477.2, 417/477.3, 417/477.4, 417/477.5, 417/477.6, 417/477.7, 417/477.8, 417/477.9, 417/477.11, 417/477.12, 417/477.13, 417/477.14
• US Class Current: 417/474
• CPC Class Codes: A61M 5/14232 Roller pumps
• CPC Class Codes: F04B 43/082 the tubular flexible member being pressed against a wall by a number of elements, each having an alternating movement in a direction perpendicular to the axes of the tubular member and each having its own driving mechanism
• CPC Class Codes: F04B 43/12 having peristaltic action
• CPC Class Codes: F04B 43/1223 the actuating elements, e.g. rollers, moving in a straight line during squeezing
• CPC Class Codes: F04B 43/1253 by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing

Abstract

A fluid transporting device is of a writhing type for transporting a fluid continuously. The fluid transporting device comprises a plurality of push pins arranged along a tube and radially on a concentric arc for squeezing a portion of the tube through which the fluid is fed and having elasticity substantially at right angles, and rollers 50 to 53 for pushing those push pins sequentially from the inlet side to the outlet side of the fluid. With this structure, it is possible to provide a thin, small fluid transporting device for continuing a stable flow rate, and a fluid transporter having the fluid transporting device.

Claims

1. A fluid transporting device comprising:

an elastic tube;

a tube frame having a tube guide wall for mounting said tube in an arcuate shape;

a rotary disc arranged on an inner side of said tube, said rotary disc operable to rotate about an axis of rotation;

a rotary push plate mounted to said rotary disc by a plurality of support pins, said rotary push plate secured to said plurality of support pins by a plurality of C-rings that correspond to each of said support pins, and said rotary push plate operable to rotate about said axis of rotation with said rotary disc;

a plurality of push pins oriented perpendicular to said axis of rotation of said rotary push plate, said push pins being disposed between said tube and said rotary push plate; and

said rotary push plate having a plurality of lobes integral therewith arranged at equal intervals with respect to the axis of rotation of said rotary push plate;

wherein an arcuate center of said tube guide wall, the axis of rotation of said rotary push plate, and a radial center of said push pins are aligned with each other; and

any one of the plurality of lobes simultaneously pushes a plurality of the push pins to feed the fluid from the fluid inlet side to the outlet side.

7. The device of claim 1, wherein said lobes are separated from each other by a recess that extends radially toward said axis of rotation, each lobe including a leading edge that includes an arc and a slope that terminates at an outer circumferential arc, and a trailing edge that includes a slope.

2. A fluid transporting device comprising:

an elastic tube;

a tube frame having a tube guide wall for mounting said tube in an arcuate shape;

a rotary disc that rotates about an axis of rotation arranged on an inner side of said tube;

a rotary push plate mounted to said rotary disc by a plurality of support pins, said rotary push plate secured to said plurality of support pins by a plurality of C-rings that correspond to each of said support pins, and said rotary push plate operable to rotate about said axis of rotation with said rotary disc;

a plurality of push pins arranged perpendicular to said axis of rotation and disposed between said tube and said rotary push plate; and

said rotary push plate having a plurality of lobes integrated therewith arranged at equal intervals with respect to said axis of rotation of said rotary push plate;

wherein an arcuate center of said tube guide wall, said axis of rotation of said rotary push plate, and a radial center of said push pins are aligned with each other,

any one of the plurality of lobes simultaneously pushes a plurality of the push pins to feed the fluid from a fluid inlet side to an outlet side, and

a fluid storing container for containing a fluid in communication with the fluid transporting device by said tube.

3. The fluid transporting device of claim 2, wherein said fluid transporting device and said fluid storing container are formed in parallel in a planar direction in a casing.

4. The fluid transporting device of claim 3, further comprising an opening for producing communication between the inside and the outside of said fluid storing container;

and

an air-permeable film mounted on said opening.

8. The device of claim 2, wherein said lobes are separated from each other by a recess that extends radially toward said axis of rotation, each lobe including a leading edge that includes an arc and a slope that terminates at an outer circumferential arc, and a trailing edge that includes a slope.

5. A fluid transporting device comprising:

an elastic tube;

a tube frame having a tube guide wall for mounting said tube in an arcuate shape;

a rotary disc arranged on an inner side of said tube, said rotary disc operable to rotate about an axis of rotation;

a rotary push plate mounted to said rotary disc by a plurality of support pins, said rotary push plate secured to said plurality of support pins by a plurality of C-rings that correspond to each of said support pins, and said rotary push plate operable to rotate about said axis of rotation with said rotary disc;

a plurality of push pins oriented perpendicular to said axis of rotation of said rotary push plate, said push pins being disposed between said tube and said rotary push plate; and

said push plate having a plurality of lobes integral therewith arranged at equal intervals with respect to the axis of rotation;

a slide frame located at an outer circumference of said rotary push plate, said slide frame having a plurality of throughholes extending radially from the axis of rotation of the rotary push plate toward said tube, and said push pins being mounted in said throughholes;

wherein an arcuate center of said tube guide wall, the axis of rotation of said rotary push plate, and a radial center of said push pins are aligned with each other; and

any one of the plurality of lobes push the plurality of push pins sequentially to feed the fluid from the fluid inlet side to the outlet side.

6. The device of claim 5, further comprising a fluid storing container for containing a fluid in communication with said tube.

9. The device of claim 5, wherein said lobes are separated from each other by a recess that extends radially toward said axis of rotation, each lobe including a leading edge that includes an arc and a slope that terminates at an outer circumferential arc, and a trailing edge that includes a slope.