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Title:
AERODYNAMIC SELF-EXCITED SOUND TYPE REFRIGERATION MACHINE
Document Type and Number:
Japanese Patent JP2016095058
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To implement thermoacoustic refrigeration applying an engine as a driving source with a simple constitution.SOLUTION: A vent tube 2 defines a ventilation passage 8 for circulating a gas inside. A fan 3 is disposed in the ventilation passage 8 and driven and rotated by driving of an engine 9 to circulate the gas in the ventilation passage 8. A resonance tube 4 defines an acoustic space 10 intersecting and communicating with the ventilation passage 8 at a downstream side of the fan 3 inside thereof. A spring mass system 20 changes a value of acoustic impedance of an end portion of the acoustic space 10. A tubular member 5 is fixed in an intersecting region 11 of the ventilation passage 8 and the acoustic space 10. The gas flowing into the intersecting region 11 from the ventilation passage 8 collides with the tubular member 5 and generates Karman vortex. A first stack 6 is disposed in the acoustic space 10. The Karman vortex generated in the intersecting region 11 generates aerodynamic self-excited sound in the acoustic space 10 by vibrating with a discharge frequency substantially agreed with a resonance frequency of the resonance tube 4. Temperature difference is generated in the stack 6 by the aerodynamic self-excited sound of the acoustic space 10.SELECTED DRAWING: Figure 1

Inventors:
MARUYAMA RYUTA
Application Number:
JP2014230231A
Publication Date:
May 26, 2016
Filing Date:
November 12, 2014
Export Citation:
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Assignee:
ISUZU MOTORS LTD
International Classes:
F25B9/00; F28D1/04
Attorney, Agent or Firm:
米山 尚志