Refrigeration – Automatic control – Of external fluid or means
Reexamination Certificate
2008-03-11
2008-03-11
Jiang, Chen Wen (Department: 3744)
Refrigeration
Automatic control
Of external fluid or means
C236SDIG017, C236S04400R, C700S299000, C062S176500
Reexamination Certificate
active
07340910
ABSTRACT:
The system and method for increasing efficiency of heat pumps employs temperature sensors to measure the indoor refrigerant coil (indoor heat exchanger) and supply duct air temperature in a heat pump system to vary the indoor air flow rate based on the amount of heat being supplied by the heat pump. By monitoring the indoor refrigerant coil temperature, and the supply duct air temperature near the unit, the airflow can be adjusted to match the BTU (heat) output of the heat pump system. Less air flow over a cooler indoor refrigerant coil temperature allows increased, more efficient, heat transfer, allowing the cooler indoor refrigerant coil temperature to more effectively warm the air. Additionally, with airflow reduced when the indoor refrigerant coil is operating at lower than optimal temperatures or during a defrost cycle, the reduced airflow into living spaces presents a less drafty and more comfortable condition.
REFERENCES:
patent: 3339628 (1967-09-01), Sones et al.
patent: 4324288 (1982-04-01), Karns
patent: 4364237 (1982-12-01), Cooper et al.
patent: 4408713 (1983-10-01), Iijima et al.
patent: 4627484 (1986-12-01), Harshbarger, Jr. et al.
patent: 4860552 (1989-08-01), Beckey
patent: 5202951 (1993-04-01), Doyle
patent: 5492273 (1996-02-01), Shah
patent: 5673568 (1997-10-01), Isshiki
patent: 6131402 (2000-10-01), Mills, Jr. et al.
patent: 6695046 (2004-02-01), Byrnes et al.
ICM326H/ICM327H Line Voltage Head Pressure Control Application Guide, ICM Controls corporation, downloaded from http://www.icmcontrols.com/products/pdf/icm326-ag.pdf on Nov. 12, 2004.
Jiang Chen Wen
Litman Richard C.
LandOfFree
System and method of increasing efficiency of heat pumps does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method of increasing efficiency of heat pumps, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method of increasing efficiency of heat pumps will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2799100