Dual motor controller for furnace applications

Patent metadata

Field	Value
Publication number	US-2023204211-A1
Application number	US-202218079950-A
Country	US
Kind code	A1
Filing date	Dec 13, 2022
Priority date	Dec 23, 2021
Publication date	Jun 29, 2023
Grant date	—

Abstract

A furnace including: a blower assembly compartment; a blower assembly located within the blower assembly compartment; a blower motor located within the blower assembly compartment, the blower motor operably connected to a fan of the blower assembly; an induced draft blower; an inducer motor operably connected to the induced draft blower; and a dual motor controller located within the blower assembly compartment, the dual motor controller being configured to independently control at least one of a torque or a speed of the blower motor and the inducer motor.

First claim

What is claimed is:

1 . A furnace comprising:
a blower assembly compartment; a blower assembly located within the blower assembly compartment; a blower motor located within the blower assembly compartment, the blower motor operably connected to a fan of the blower assembly; an induced draft blower; an inducer motor operably connected to the induced draft blower; and a dual motor controller located within the blower assembly compartment, the dual motor controller being configured to independently control at least one of a torque or a speed of the blower motor and the inducer motor.

2 . The furnace of claim 1 , further comprising:
a controller housing, wherein the dual motor controller is located in the controller housing.

3 . The furnace of claim 2 , further comprising:
a blower housing configured to house a fan of the blower assembly, wherein the controller housing is attached to the blower housing.

4 . The furnace of claim 1 , further comprising:
a furnace control board electrically connected to the dual motor controller; and a power source wire electrically connecting the furnace control board to a single power source.

5 . The furnace of claim 1 , further comprising:
a combustion compartment, the induced draft blower and the inducer motor being located in the combustion compartment.

6 . The furnace of claim 5 , wherein the blower assembly compartment is thermally separated from the combustion compartment.

7 . A method of assembling a furnace, the method comprising:
installing a blower motor within a blower assembly; installing the blower assembly within a blower assembly compartment of the furnace; installing an inducer motor in an induced draft blower; installing the induced draft blower in a combustion compartment of the furnace; and installing a dual motor controller within the blower assembly compartment, the dual motor controller being configured to independently control at least one of a torque or a speed of the blower motor and the inducer motor.

8 . The method of claim 7 , further comprising:
installing the dual motor controller in a controller housing.

9 . The method of claim 8 , further comprising:
attaching the controller housing to a blower housing configured to house a fan of the blower assembly.

10 . The method of claim 7 , further comprising:
electrically connecting a furnace control board to the dual motor controller; and electrically connecting the furnace control board to a single power source using a power source wire.

11 . The method of claim 7 , further comprising:
operably connecting the blower motor to a fan of the blower assembly.

12 . The method of claim 7 , further comprising:
operably connecting the inducer motor to the induced draft blower.

13 . A method of operating a furnace comprising a blower motor, an inducer motor, and a dual motor controller, the blower motor being operably connected to a fan, the inducer motor being operably connected to an induced draft blower, the method comprising:
independently controlling, via the dual motor controller, at least one of a torque or a speed of the blower motor and the inducer motor, wherein the dual motor controller and the blower motor are located within a blower assembly compartment.

14 . The method of claim 13 , wherein the inducer motor is located in a combustion compartment, the combustion compartment being thermally separated from the blower assembly compartment.

15 . The method of claim 13 , wherein the dual motor controller is electrically connected to a furnace control board, a power source wire electrically connects the furnace control board to a single power source.

Assignees

• Carrier Corp

Inventors

• Arnedo Luis
• Tournier Eric
• Andrzejewski Nicholas
• Blake Jonathan

Classifications

• F23N5/265 Primary

  using electronic means · CPC title

• F23N2900/05004

  Details of components, e.g. connecting adaptors · CPC title

• F23N2241/02

  Space-heating · CPC title

• F23N2241/08

  Household apparatus · CPC title

• F23N2233/08

  with variable speed · CPC title