Energy recovery ventilator with reduced power consumption

• US 10,222,085 B2
• Filed: 02/27/2013
• Issued: 03/05/2019
• Est. Priority Date: 02/29/2012
• Status: Active Grant

• Current Assignee: Carrier Corporation (Carrier Global Corporation)
• Original Assignee: Carrier Corporation (Carrier Global Corporation)
• Inventors: Heberer, Dwight H., Dempsey, Daniel J., Thompson, Kevin D., Adams, Eric W., Kuffner, Kent
• Primary Examiner(s): McAllister, Steven B
• Assistant Examiner(s): Probst, Samantha
• Application Number:
  US13/778,305
• Publication Number:
  US 20130225060A1
• Time in Patent Office: 2,197 Days
• Field of Search: 454256
• CPC Class Codes: F24F 11/0001 for ventilation F24F11/30 takes precedence
• CPC Class Codes: F24F 11/77 by controlling the speed of ventilators
• CPC Class Codes: F24F 12/001 with heat-exchange between supplied and exhausted air

Abstract

An air conditioning unit includes a passage having a heat exchanger; a blower for blowing air through the passage; a blower motor driving the blower in response to a drive signal; an energy recovery ventilator (ERV), the blower drawing outside air from the ERV; and a controller for adjusting the drive signal in a ventilation mode to reduce power used by the blower motor.

Claims

1. An air conditioning unit comprising:

a cabinet having a heat exchanger;

a blower for blowing air through the cabinet;

a blower motor driving the blower in response to a drive signal;

the blower motor comprising multiple taps corresponding to a motor speeds;

an energy recovery ventilator (ERV), the blower drawing outside air from the ERV; and

a controller for controlling the drive signal comprising;

a ventilation mode wherein the drive signal is adjusted to a reduced power motor speed, energizing a low speed tap of the blower motor;

and a heating or cooling mode wherein the drive signal is adjusted to a tap other than the low speed tap to provide a power to achieve an increased motor speed other than the reduced power motor speed.

2. The air conditioning unit of claim 1 wherein:

the controller meets a desired airflow through the passage.

3. The air conditioning unit of claim 1 further comprising:

a switching device coupled to receive AC voltage and apply the AC voltage to the low speed tap.

4. The air conditioning unit of claim 3 wherein:

the switching device applies the AC voltage to low speed tap in response to the controller.

5. The air conditioning unit of claim 1 wherein:

the blower motor is a permanent split capacitor motor.

6. The air conditioning unit of claim 1 wherein:

the blower motor is a discreet tap X13 motor.