Heat source device

Patent metadata

Field	Value
Publication number	US-11118811-B2
Application number	US-201916708802-A
Country	US
Kind code	B2
Filing date	Dec 10, 2019
Priority date	Dec 14, 2018
Publication date	Sep 14, 2021
Grant date	Sep 14, 2021

Abstract

A heat source device comprising: a combustion chamber (2) provided between a burner (31) and a heat exchanger (1); an inlet pipe (20) for allowing a fluid to be heated to flow in the heat exchanger (1); an outlet pipe (21) for allowing the fluid to be heated to flow out from the heat exchanger (1); and a winding pipe (27) wound around an outer surface of a peripheral wall of the combustion chamber (2), wherein either the inlet pipe (20) or the outlet pipe (21) has an orifice (91) for throttling a fluid flow path of the fluid to be heated flowing in the inlet pipe (20) or the outlet pipe (21).

First claim

What is claimed is:

1. A heat source device comprising:
a burner for generating combustion exhaust gas;
a heat exchanger through which the combustion exhaust gas flows;
a combustion chamber provided between the burner and the heat exchanger;
an inlet pipe for allowing a fluid to be heated to flow in the heat exchanger;
an outlet pipe for allowing the fluid to be heated to flow out from the heat exchanger; and
a winding pipe wound around an outer surface of a peripheral wall of the combustion chamber,
wherein either the inlet pipe or the outlet pipe has an orifice configured to throttle a fluid flow path of the fluid to be flowing in the inlet pipe or the outlet pipe,
an upstream end of the winding pipe communicates with an upstream branch provided on an upstream side of the orifice in the inlet pipe or the outlet pipe, and
a downstream end of the winding pipe communicates with a downstream branch provided on a downstream side of the orifice in the inlet pipe or the outlet pipe.

2. The heat source device according to claim 1 ,
wherein the heat exchanger has a plate-type heat exchanger formed by stacking a plurality of heat exchange units in a gas flow direction of the combustion exhaust gas,
wherein each of the heat exchange units includes an internal space in which the fluid to be heated flows.

3. The heat source device according to claim 1 , further comprising a drain receiver connected to the heat exchanger,
wherein the burner has a downward combustion surface,
the burner, the combustion chamber, the heat exchanger, and the drain receiver are disposed in order from a top,
the inlet pipe and the outlet pipe protrude downward from the heat exchanger through the drain receiver,
the upstream end of the winding pipe communicates with the upstream branch provided on the inlet pipe or the outlet pipe protruding downward from the drain receiver, and
the downstream end of the winding pipe communicates with the downstream branch provided on the inlet pipe or the outlet pipe protruding downward from the drain receiver.

Assignees

• Rinnai Kk

Inventors

• Ono Takahiro
• Ojiro Takashi

Classifications

• F28F3/12

  Elements constructed in the shape of a hollow panel, e.g. with channels {(F28D1/02, F28D1/03 take precedence)} · CPC title

• F24H1/34

  with water chamber arranged adjacent to the combustion chamber or chambers, e.g. above or at side · CPC title

• F24H1/32

  with vertical sections arranged side by side · CPC title

• F24H9/1836

  using fluid fuel · CPC title

• F24H1/445

  with integrated flue gas condenser · CPC title