System and method for switching-over between heati

专利名称：System and method for switching-over

between heating and cooling modes

发明人：Phillip Ryan Wagner,John Gilman Chapman,

Jr.

申请号：US09983651申请日：20011025公开号：US06769482B2公开日：20040803

专利附图：

摘要：A heating, ventilation and air conditioning (HVAC) device () which includes bothheating and cooling operating modes provides an easy-to-use interface () for selecting

the operating parameters of the device (). The interface () allows the input of a setpointtemperature at which the HVAC device () conditions the ambient temperature of a space(). A mode switch-over algorithm () uses the setpoint temperature, the sensed

temperature from the conditioned space, and prestored threshold values that dependon the device's operating capacities, to determine when to change the device betweenheating and cooling modes. Also, within each of the respective modes, a heating () orcooling () algorithm controls the engaging and disengaging of the heating and coolingelements of the device () to maintain the temperature of the conditioned space () within adesired comfort zone.

申请人：RANCO INCORPORATED OF DELAWARE

代理机构：Leydig, Voit & Mayer, Ltd.

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