Heat exchanger

Patent metadata

Field	Value
Publication number	US-10481012-B2
Application number	US-201815868089-A
Country	US
Kind code	B2
Filing date	Jan 11, 2018
Priority date	Feb 8, 2017
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

A heat exchanger ( 3 ) having a temperature sensor ( 16 ) detecting a temperature of a water passage ( 300 ) including heat-transfer pipes ( 32 ), ( 33 ), a connecting portion ( 34 ), an inlet pipe ( 11 ), and an outlet pipe ( 12 ), and a sensor bracket ( 6 ), wherein the sensor bracket ( 6 ) is joined and fixed to the connecting portion ( 34 ) in a state in which at least a part of a base portion ( 60 ) of the sensor bracket ( 6 ) forming a mounting surface of the temperature sensor ( 16 ) is in surface contact with a planar portion ( 340 ) provided in the connecting portion ( 34 ), and the temperature sensor ( 16 ) is secured to a joint portion ( 600 ) of the base portion ( 60 ) joined and fixed to the planar portion ( 340 ).

First claim

What is claimed is:

1. A heat exchanger comprising:
a case body;
a plurality of heat-transfer pipes disposed in the case body;
a connecting header configured to cover pipe ends of the plurality of heat-transfer pipes fixed on a side wall of the case body from outside the case body and connect the pipe ends of the plurality of heat-transfer pipes outside the side wall of the case body, the connecting header has a planar surface;
an inlet pipe configured to supply a fluid to be heated into the heat-transfer pipes;
an outlet pipe configured to lead out the fluid to be heated from the heat-transfer pipes;
a temperature sensor configured to detect a temperature of a water passage, wherein the water passage is formed of the heat-transfer pipes, the connecting header, the inlet pipe, and the outlet pipe; and
a sensor bracket configured to fix the temperature sensor to the sensor bracket, wherein
the sensor bracket is joined and fixed to the connecting header,
at least a part of a base portion of the sensor bracket forming a mounting surface of the temperature sensor is in surface contact with the planar surface provided in the connecting header, and
the temperature sensor is secured to a joint portion of the base portion of the sensor bracket joined and fixed to the connecting header so as to detect the temperature of the water passage through the planar surface of the connecting header and the base portion of the sensor bracket.

2. The heat exchanger according to claim 1 , further comprising,
a pressing member configured to press the temperature sensor against the sensor bracket, wherein
the temperature sensor is secured to the joint portion of the base portion by being sandwiched between the sensor bracket and the pressing member.

3. The heat exchanger according to claim 2 , wherein
the sensor bracket and the pressing member are connected to each other by a fixing member at a position separated by a predetermined distance outward of the case body from the planar surface of the connecting header.

4. The heat exchanger according to claim 1 , wherein
the connecting header has an opening in one surface facing the side wall of the case body,
the sensor bracket is joined and fixed to the planar surface provided on another surface opposite to the one surface in which the opening of the connecting header is provided, and
when viewed from outside the side wall of the case body, the sensor bracket is disposed inward of a peripheral edge portion of the connecting header.

Assignees

• Rinnai Kk

Inventors

• Nagasaka Toshimitsu
• Ando Masakazu

Classifications

• F24H9/0026

  in combustion gas channels · CPC title

• F24H9/2007 Primary

  for water heaters · CPC title

• F24H1/40

  with water tube or tubes · CPC title

• F28F27/00

  Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus (control arrangements in general G05) · CPC title

• F28D7/1623

  with particular pattern of flow of the heat exchange media, e.g. change of flow direction · CPC title