Gravity-Style Furnace Subunit Inside a Gas-Induced Draft Furnace
US-2017219248-A1 · Aug 3, 2017 · US
Warm air heater
US2016169558A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016169558-A1 |
| Application number | US-201414567509-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 11, 2014 |
| Priority date | Dec 11, 2014 |
| Publication date | Jun 16, 2016 |
| Grant date | — |
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Abstract
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An orifice 26 is provided in an air supply passage 5 a of a warm air heater 100 , and a differential pressure sensor 28 detects differential pressure Δp between front and rear of the orifice 26 in the air supply passage 5 a . Rotation speed of the combustion fan 24 is corrected on the basis of the differential pressure Δp detected by the differential pressure sensor 28.
First claim
Opening claim text (preview).
What is claimed is: 1 . A warm air heater comprising: a burner which is disposed in a combustion chamber; a fuel supply unit which supplies fuel gas to the burner; an air supply passage which communicates the combustion chamber with outdoors; a combustion fan which is disposed in the air supply passage, and supplies air in the outdoors to the combustion chamber through the air supply passage; an orifice which is provided in the air supply passage; a differential pressure detection unit which detects differential pressure between front and rear of the orifice in the air supply passage; a combustion control unit which rotates the combustion fan based on target combustion quantity of the burner, and causes the fuel supply unit to supply the fuel gas to allow the burner to burn; and a correction unit which corrects rotation speed of the combustion fan based on the differential pressure detected by the differential pressure detection unit. 2 . The warm air heater according to claim 1 , wherein the correction unit corrects supply quantity of the fuel gas supplied by the fuel supply unit, based on the differential pressure detected by the differential pressure detection unit. 3 . The warm air heater according to claim 1 , wherein a correction value when the correction unit corrects the rotation speed of the combustion fan, and a correction value when the correction unit corrects supply quantity of the fuel gas are different. 4 . The warm air heater according to claim 2 , wherein a correction value when the correction unit corrects the rotation speed of the combustion fan, and a correction value when the correction unit corrects the supply quantity of the fuel gas are different. 5 . The warm air heater according to claim 1 , comprising an abnormality detection unit which detects presence and absence of an abnormality of the air supply passage based on the differential pressure detected by the differential pressure detection unit. 6 . The warm air heater according to claim 2 , comprising an abnormality detection unit which detects presence and absence of an abnormality of the air supply passage on the basis of the differential pressure detected by the differential pressure detection unit. 7 . The warm air heater according to claim 3 , comprising an abnormality detection unit which detects presence and absence of an abnormality of the air supply passage on the basis of the differential pressure detected by the differential pressure detection unit. 8 . The warm air heater according to claim 4 , comprising an abnormality detection unit which detects presence and absence of an abnormality of the air supply passage on the basis of the differential pressure detected by the differential pressure detection unit.
Assignees
Inventors
Classifications
- F24H9/2085Primary
using fluid fuel · CPC title
using fluid fuel · CPC title
using fluid fuel · CPC title
Temperature of the air before heating · CPC title
of burners · CPC title
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Frequently asked questions
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- What does patent US2016169558A1 cover?
- An orifice 26 is provided in an air supply passage 5 a of a warm air heater 100 , and a differential pressure sensor 28 detects differential pressure Δp between front and rear of the orifice 26 in the air supply passage 5 a . Rotation speed of the combustion fan 24 is corrected on the basis of the differential pressure Δp detected by the differential pressure sensor 28.
- Who is the assignee on this patent?
- Rinnai Kk
- What technology area does this patent fall under?
- Primary CPC classification F24H9/2085. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Jun 16 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).