Title:
DOUBLE-PIPE HEAT EXCHANGER AND HEAT-PUMP TYPE WATER HEATER
Document Type and Number:
Japanese Patent JP2016217669
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a double-pipe heat exchanger having corrosion prevention means for preventing an outer surface part of an inner pipe in which refrigerant flows from being oxidation corroded with gas bubbles generated from hot water and provide a heat-pump type water heater including the double-pipe heat exchanger.SOLUTION: This invention relates to a double-pipe type heat exchanger 10 having an inner pipe 35 and an outer pipe 36 so as to perform a heat exchanging operation between first thermal medium flowing at the inner pipe 35 and second thermal medium flowing between the inner pipe 35 and the outer pipe 36 in which an outer surface part of the inner pipe 35 at a location corresponding to at least one of a feeding-out part 30a and a feeding-out part 30b of the second thermal medium is provided with a sleeve 40a acting as corrosion prevention means 40.SELECTED DRAWING: Figure 3
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Inventors:
EDA AKITO
Application Number:
JP2015106067A
Publication Date:
December 22, 2016
Filing Date:
May 26, 2015
Export Citation:
Assignee:
NORITZ CORP
International Classes:
F28D7/10; F24H1/00; F24H9/00; F28F19/00
Domestic Patent References:
| JPH07270084A | 1995-10-20 | |||
| JP2012007753A | 2012-01-12 | |||
| JPS5580009U | 1980-06-02 |
Attorney, Agent or Firm:
Toshio Okamura