US4890932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal environment sensor with means to simulate emissivity of human body
Assignee: Daikin Industries Ltd
•
Filing: 1987-10-22
•
Granted: 1990-01-02
•
Expires: 2007-10-22
Abstract
Abstract In a thermal-environment sensor which detects thermal conditions in an indoor environment based on the surface temperature of a heating element supplied with a thermal quantity, the spectral emissivity of the outer surface of said heating element closely conforming to the spectral emissivity of the surface of the human skin or clothes thereon so as to bring the radiant heat transfer coefficient of the sensor remarkably near that of the human body.
Inventors
- 👤 Masahiro Kobayashi
- 👤 Noboru Kobayashi
- 👤 Kunikazu Torikoshi
- 👤 Shigehiro Uemura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:27
CPC Classifications
G; G01; G01W; G01W1/00; G01W1/17; G01K; G01K2201/00; G01K2201/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
129 words
A thermal-environment sensor comprising: a heating element having an outer surface, said heating element adapted for placement in a room and being heated by thermal quantity (M); a layer of radiant materials, covering the outer surface of said heating element and having a spectral emissivity closely conforming to that of the surface of human skin or clothes thereon; a temperature detector adapted to detect surface temperature (Tg) of said heating element; a humidity detector adapted to detect humidity (RH) in the room; means for calculating effective temperature (y) in the room, said means adapted to receive the output of both the humidity and temperature detectors, based on a formula y=Tg-C 1 +f 1 (RH); wherein C 1 =correction constant and f 1 (RH) is a function of humidity (RH).
Claim 2
Dependent Claim
129 words
A thermal-environment sensor comprising: a heating element having an outer surface, said heating element adapted for placement in a room and being heated by thermal quantity (M); a layer of radiant materials, covering the outer surface of said heating element and having a spectral emissivity closely conforming to that of the surface of human skin or clothes thereon; a temperature detector adapted to detect surface temperature (Tg) of said heating element; a humidity detector adapted to detect humidity (RH) in the room; means for calculating effective temperature (y) in the room, said means adapted to receive the output of both the humidity and temperature detectors, based on a formula y=Tg-C 1 +f 1 (RH); wherein C 1 =correction constant and f 1 (RH) is a function of humidity (RH).
Claim 3
Dependent Claim
49 words
The thermal-environment sensor as claimed in claim 1, wherein said effective temperature (y) is calculated based on the following empirical formula: y=Tg+2.31RH-8.39 (in the case where said thermal quantity (M) equals 86 W/m 2 ) y=Tg+2.31RH-9.54 (in the case where said thermal quantity (M) equal 101 W/m 2 ).
Claim 4
Dependent Claim
154 words
A thermal-environment sensor comprising: a heating element having an outer surface, said heating element adapted for placement in a room and being heated by thermal quantity (M): a layer of radiant materials covering an outer surface of said heating element, having a spectral emissivity closely conforming to that of a surface of human skin or clothes thereon; a temperature detector adapted to detect surface temperature (Tg) of said heating element; a humidity detector adapted to detect a humidity (RH) in the room; means for adjusting a thermal resistance (Clo) to the quantity of clothes on a human body in proximity to said sensor; and means for calculating an effective temperature (Y) in the room based-on a formula y=Tg-C 3 +f 3 (RH)+g 3 (Clo) wherein C 3 =correction constant, f 3 (RH) is a function of humidity (RH) and g 3 (Clo) is a function of thermal resistance (Clo) for a quantity of clothes.
Claim 5
Dependent Claim
154 words
A thermal-environment sensor comprising: a heating element having an outer surface, said heating element adapted for placement in a room and being heated by thermal quantity (M): a layer of radiant materials covering an outer surface of said heating element, having a spectral emissivity closely conforming to that of a surface of human skin or clothes thereon; a temperature detector adapted to detect surface temperature (Tg) of said heating element; a humidity detector adapted to detect a humidity (RH) in the room; means for adjusting a thermal resistance (Clo) to the quantity of clothes on a human body in proximity to said sensor; and means for calculating an effective temperature (Y) in the room based-on a formula y=Tg-C 3 +f 3 (RH)+g 3 (Clo) wherein C 3 =correction constant, f 3 (RH) is a function of humidity (RH) and g 3 (Clo) is a function of thermal resistance (Clo) for a quantity of clothes.
Claim 6
Dependent Claim
49 words
The thermal-environment sensor as claimed in claim 3, wherein said effective temperature (y) is calculated based on the following empirical formula: y=Tg+2.2RH-5.7Clo-11.8 (in the case where said thermal quantity (M) equal 86 W/m 2 )or y=Tg+2.2RH-5.7Clo-12.9 (in the case where said thermal quantity (M) equals 101 W/m 2 ).
References Cited (Backward Citations)
US3326045A
Cited
US4058254A
Cited
US3630084A
Cited
US4164869A
Cited
JPS5560513A
Cited
US4274475A
Cited
JPS566689A
Cited
JPS58218624A
Cited
US4504157A
Cited
US4564748A
Cited
JPS59104016A
Cited
US4446913A
Cited
US4592661A
Cited
JPS60192976A
Cited
US4747699A
Cited
US4703886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-01 | 1993-07-03 | 1994-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-01 | 1997-07-03 | 1998-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-01 | 2001-07-03 | 2002-01-02 | $7700.00 | Window Closed / Lapsed |