VARIABLE SPEED BOX FAN FULL RANGE OF

1255236430PH-4516876446 Power Consumption (W). Big Brute Philippines SKU. Therefore, choosing a 1/2 hp motorBrand. (refer to performance box - 2052 cfm at 0.625 in. The key variables that do change depending on applications are the fan model and the air volume flow rate (cfm). The speed of the tip of a fan wheel or prop measured in feet per minute.

Variable Speed Box Fan Full Range Of

Use the search box to browse our documents database and find.Sensing means for sensing the speed of the compressor over a range of operating speeds Sensing means for sensing the temperature of the refrigerant in the outdoor coil andControl means for controlling the speed of the fan in response to both the compressor speed and the refrigerant temperature in such a manner as to optimize the operating efficiency of the fan operation over the full range of operating speeds.2. I love this fan - the low noise level and the many speeds allows me This item, OmniBreeze Tower Fan - Model DC2018 - 4 Speeds Widespread Oscillation Remote. You can have it oscillate or not, but not through the remote. The fan is easy to move to another room. The foot does not take that much space on the floor. An improved outdoor assembly for a heat pump system of the type having a variable speed compressor, an outdoor coil, and a fan with a variable speed motor, comprising There are many speeds to choose from, so you can balance the noise level vs air flow.

A method of controlling the fan speed in the heat pump system as set forth in claim 6 wherein the step of controlling the speed of the fan is accomplished in accordance with the following algorithm: Fan speed %=a+b (CS)+c (TOC)Fan speed % is the percent of the maximum outdoor fan speed RPM at which the motor is requested to run This invention relates generally to air conditioning and heat pump systems and, more particularly, to a method and apparatus for optimizing the outdoor air flow for overall system efficiency and reliability.In the design of air conditioning and heat pumps systems, it is common practice to use an outdoor fan motor equipped to operate at one or two speeds. A method of controlling the fan speed in the heat pump system of a type having a variable speed compressor, an outdoor coil and a variable speed fan motor comprising the steps of:Sensing the speed of the compressor over a range of operating speeds Sensing the temperature of the refrigerant in the outdoor coil andControlling the speed of the fan in response to the both sensed compressor speed and the sensed refrigerant temperature so as to optimize the operating efficiency of the fan operation over the full range of compressor operating speeds.7. An improved heat pump system as set forth in claim 1 wherein said control means controls the speed of the fan in accordance with the following algorithm Fan speed %=a+b (CS)+c (TOC)Fan speed % is the percent of the maximum outdoor fanRPM at which the fan motor is requested to run CS is the speed of the compressor normalized to its total speed range TOC is the operating temperature of the outdoor coil and6. An improved heat pump system as set forth in claim 1 wherein said control means includes means for applying a constant multiplier value to said compressor speed.5. An improved outdoor coil as set forth in claim 1 wherein said control means includes means for applying a constant multiplier value to said sensed refrigerant temperature.4.

Below 55° F.) and does little to improve the efficiency of the system. It should be recognized that, while this technique does generally function to lower the fan speed with lower temperatures, it only operates in the lower ambient temperature conditions (e.g. 27, 1965 and assigned to the assignee of the present invention. This problem has been addressed by an associated reduction in fan speed in such a manner as described in U.S. As the lower temperatures are approached, the condensing temperature of the refrigerant in the condenser also drops, and this in turn produces a corresponding reduction in the head pressure on the high pressure side of the refrigeration system.

3 is a partial view of the outdoor coil portion thereof, together with an installed thermistor.FIG. 2 is a schematic illustration of a heat pump control system in accordance with the present invention.FIG. 1 is a pictorial representation of a heat pump having the present invention incorporated therein.FIG. In doing so, the power consumption of the fan motor is also limited thereby increasing overall system efficiency.By yet another aspect of the invention, the microprocessor control monitors both compressor speed and liquid refrigerant temperature and continuously recalculates and adjusts the fan speed to maintain optimum operation during normal system heating or cooling modes.In accordance with another aspect of the invention, at lower ambient temperature conditions, the microprocessor control operates to reduce the fan speed, or to eventually turn the fan off, in order to maintain the head pressure necessary for reliable operation.In the drawings as hereinafter described, a preferred embodiment is depicted however, various other modifications and alternate constructions can be made thereto without departing from the true spirit and scope of the invention.FIG. In this way, the outdoor fan motor speed is limited to provide only that air flow necessary to perform the work required of the air conditioner or heat pump at any given set of operating conditions.