Heated and cooled chair apparatus

• US 9,833,077 B2
• Filed: 08/03/2015
• Issued: 12/05/2017
• Est. Priority Date: 02/04/2013
• Status: Active Grant

• Current Assignee: Regents of the University of California (University of California)
• Original Assignee: Regents of the University of California (University of California)
• Inventors: Arens, Edward A., Zhang, Hui, Pasut, Wilmer, Andersen, Michael P.
• Primary Examiner(s): BARFIELD, ANTHONY DERRELL
• Application Number:
  US14/816,234
• Publication Number:
  US 20160029805A1
• Time in Patent Office: 855 Days
• Field of Search: 29718012, 29718014
• CPC Class Codes: A47C 7/744 with active means, e.g. by using air blowers or liquid pumps
• CPC Class Codes: A47C 7/748 for heating

Abstract

Articles of furniture with a system of heating and cooling that can be integrated into a building environmental control network are provided. The heating/cooling system of the article has surfaces of a porous or non-porous, moisture-permeable material allowing convective and evaporative heat exchange from the body surface to the environment. The material covers a plenum that has reflective surfaces to reduce radiant losses and low-wattage fans to circulate air that convectively cools the occupant. Resistance heating may be incorporated at key occupant contact areas in the seat and backrest. Temperature, occupancy and other sensors can be incorporated. A control interface controls the actions of the heating/cooling system of the article and can interact with a network server to transmit measurements of environmental temperatures and occupant selection of control settings that are useful for control of the building'"'"'s indoor environment.

Claims

1. A heating and cooling system for seated room occupants, said system comprising:

(a) a seat body with at least one plenum, said plenum having one or more plenum openings;

(b) a plurality of fans configured to create an airstream in said plenum;

(c) a moisture-permeable material covering said plenum openings;

(d) a power supply for powering said fans;

(e) a seat controller connected to the fans and power supply configured for controlling power levels to the fans;

(f) at least one building room thermostat; and

(g) a remote control with a communications link operably coupled with the seat controller and thermostat;

(h) wherein seat controller and thermostat functions are controlled by the remote control; and

(i) wherein said plenum airstream cools said moisture-permeable material of said seat body by convective and evaporative heat exchange.

2. The system as recited in claim 1, said seat body further comprising at least one heating source disposed within said plenum powered by said power supply and controlled by said seat controller.

3. The system as recited in claim 2, wherein said heat source comprises a resistive heat strip.

4. The system as recited in claim 1, wherein said power supply comprises rechargeable batteries.

5. The system as recited in claim 1, further comprising at least one sensor selected from the group of sensors consisting of temperature, relative humidity, infrared, occupancy, CO₂ and volatile organic compounds (VOCs).

6. The system as recited in claim 1, wherein said seat body comprises:

a seat base with at least one seat plenum, said seat plenum having one or more plenum openings;

a backrest body with at least one backrest plenum, said backrest plenum having one or more plenum openings;

a moisture-permeable material covering said seat plenum openings;

a moisture-permeable material covering said backrest plenum openings; and

a plurality of fans configured to create an airstream in said seat plenum and said backrest plenum across the side of the moisture-permeable material opposite the side of the material that is against the body of a user;

wherein the airstream cools the moisture-permeable material by convective and evaporative heat exchange.

7. The system as recited in claim 6, further comprising at least one resistive heat strip disposed in said seat plenum and in said backrest plenum.

8. The apparatus as recited in claim 6, each plenum further comprising a liner of thermal insulation.

9. The system as recited in claim 1, said remote control further comprising:

a display; and

a computer processor; and

a non-transitory computer-readable memory storing instructions executable by the computer processor;

wherein said instructions, when executed by the computer processor, perform steps comprising;

(i) monitoring ambient room and seat temperatures;

(ii) controlling the room thermostat; and

(iii) controlling the seat controller.