US2011057047A1PendingUtilityA1

Hot air heater

47
Assignee: WATANABE HIDEKIPriority: Sep 8, 2009Filed: Sep 7, 2010Published: Mar 10, 2011
Est. expirySep 8, 2029(~3.2 yrs left)· nominal 20-yr term from priority
Inventors:Hideki WatanabeShigeru SuzukiKeiichi Ito
F28F 1/12F28F 9/0131F28F 2215/08F24H 3/087F24D 19/0082F28F 1/24
47
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Claims

Abstract

A hot air heater has a housing having formed therein an inlet port for sucking room air and an outlet port. A circulation fan, a burner, and a heat exchanger which causes to flow combustion gas from the burner through an inside of the heat exchanger are housed in the housing. The room air sucked by operation of the circulation fan into the inlet port is heated by the heat exchanger for blowing forward as hot air out of the outlet port. A supporting plate is disposed to support the heat exchanger inside the housing. In order to limit the temperature increase in the housing by heat transmission through the supporting plate, and in order to improve the thermal efficiency, the supporting plate is provided with radiating fins. Preferably, the radiating fins are made up of cut-and-raised pieces formed in the supporting plate.

Claims

exact text as granted — not AI-modified
1 . A hot air heater comprising:
 a housing having formed therein an inlet port for sucking room air and an outlet port; and   a circulation fan, a burner, and a heat exchanger, all being housed in the housing, the heat exchanger being arranged to cause combustion gas from the burner to flow through an inside of the heat exchanger so that the room air sucked by operating the circulation fan into the inlet port is heated by the heat exchanger for blowing forward as hot air out of the outlet port,   wherein a supporting plate is disposed to support the heat exchanger inside the housing and wherein the supporting plate is provided with a radiating fin.   
     
     
         2 . The hot air heater according to  claim 1 , wherein the radiating fin is disposed such that a plate surface of the fin obliquely crosses the direction of flow of the air from the circulation fan. 
     
     
         3 . The hot air heater according to  claim 1 , wherein the radiating fin is made up of a cut-and-raised piece formed in the supporting plate. 
     
     
         4 . The hot air heater according to  claim 2 , wherein the radiating fin is made up of a cut-and-raised piece formed in the supporting plate.

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