Title:
HEAT EXCHANGER AND HOT WATER SUPPLY APPARATUS
Document Type and Number:
Japanese Patent JP3484297
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To keep efficiency of heat absorption from combustion exhaust gas unchanged and hence restrict production of drain in a heat exchanger where heat absorbed by a fin is transmitted to each of pipes with a saddle, as a boundary, which forms a col of temperature distribution between the two pipes by providing obstruction means for obstructing a heat flow between the pipe parts and the saddle part in the fin.
SOLUTION: A heat exchanger 3 consists of a plurality of fins 3a disposed horizontally of a can 10 and a water supply passage 3b parallely provided to the fins. Heat absorbed by the fins 3a is transmitted and absorbed to first to eight water pipes 31 to 38. Supply water is raised in temperature owing to the heat absorption and is supplied to a bathtub. Herein, there are provided in the heat exchanger 3 obstruction means (first to seven elongated holes) 51 to 57 for obstructing the flow of the heat. The first to seven elongated holes 51 to 57 are positioned between each of the first to fifth water pipes 31 to 35 and a saddle part and are disposed substantially parallely to the saddle part. The first to seventh elongated holes 51 to 57 are disposed such that surface temperature of each of the first to eighth water pipes 31 to 38 is higher than the dew point of combustion waste.
Inventors:
Hideyuki Jinno
Hideo Okamoto
Miwa Miyuki
Hideo Okamoto
Miwa Miyuki
Application Number:
JP20719796A
Publication Date:
January 06, 2004
Filing Date:
August 06, 1996
Export Citation:
Assignee:
Rinnai Corporation
International Classes:
F24H1/14; F24H9/00; (IPC1-7): F24H9/00; F24H1/14
Domestic Patent References:
| JP7217999A | ||||
| JP622863U |
Attorney, Agent or Firm:
Eiji Miyazaki