Title:
REFRIGERANT HEATING APPARATUS MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2010/032415
Kind Code:
A1
Abstract:
Disclosed is a refrigerant heating apparatus manufacturing method that makes it possible to improve heat transfer from an outer tube to an inner tube. Said manufacturing method equips a refrigerant heating apparatus (30) with an inner tube (31) through which refrigerant flows, an outer tube (32), and an induction heating coil (33). The outer tube (32) is wrapped around the circumference of the inner tube (31) and made from a magnetic material. The induction heating coil (33) is wrapped around the circumference of the outer tube (32) and inductively heats the outer tube (32). This manufacturing method comprises an insertion step and a tube expansion step. In the insertion step, the inner tube (31), the outside diameter of which is smaller than the inside diameter of the outer tube (32), is inserted into the outer tube (32). In the tube expansion step, after the insertion step, the inner tube (31) is expanded so that the outer circumferential surface of the inner tube (31) is tightly compacted against the inner circumferential surface of the outer tube (32).
Inventors:
WAKASHIMA MASAHIRO (JP)
SHIMODA JUNICHI (JP)
SHIMODA JUNICHI (JP)
Application Number:
PCT/JP2009/004556
Publication Date:
March 25, 2010
Filing Date:
September 14, 2009
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
WAKASHIMA MASAHIRO (JP)
SHIMODA JUNICHI (JP)
WAKASHIMA MASAHIRO (JP)
SHIMODA JUNICHI (JP)
International Classes:
F25B41/00
Foreign References:
| JP2007155259A | 2007-06-21 | |||
| JPS62104634A | 1987-05-15 | |||
| JP2000082576A | 2000-03-21 |
Attorney, Agent or Firm:
Shinjyu Global IP (JP)
fresh green -- a global IP patent business corporation (JP)
fresh green -- a global IP patent business corporation (JP)
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