Abstract:
A method of preconditioning an enclosure includes providing a thermostat and computing a set of preconditioning criteria information (PCI) with the thermostat. The computed PCI is typically representative of time and ambient temperature conditions for which preconditioning should be performed. The PCI may be stored in memory and used to compare against a current time and current ambient temperature condition of the enclosure to determine whether to enter the thermostat into a preconditioning state. If a determination is made that the PCI criteria are satisfied, the thermostat may be entered into the preconditioning state to heat or cool the enclosure. One or more of these processes may be performed while a processor of the thermostat is in a relatively high power mode or relatively low power mode.
Abstract:
A heater assembly includes one or more first heating elements characterized by a first wattage density, and one or more second heating elements characterized by a second wattage density. The second wattage density is greater than the first wattage density. The one or more second heating elements are interspersed with the one or more first heating elements.
Abstract:
A heated seat (302) comprising: a cushion with one or more trench (30) areas; a heater (300) comprising: a carrier (2) with a periphery, the carrier (2) further including: a first electrically functional layer (4) that is made of a conductive material that substantially circumscribes at least a portion of the carrier (2); and a second electrically functional layer (8) that is made of a resistive material; one or more electrical conductors {12} attached to the first electrically functional layer; a trim layer (40) that covers the cushion when the heater is placed over the cushion, and wherein the periphery includes a first side edge (18) and a second side edge (20), and each side edge includes a cutout (26), and the cutouts are located adjacent to each other—forming a neck portion (28); wherein the heater is attached to the cushion by placing an attachment device (32) over the neck portion (28) of the heater and securing one or both ends of the attachment, device (32) to the cushion so that the neck portion (28) is pulled Into the trench (30); wherein the neck portion (28) is free of the second electrically functional layer (6); and wherein the first electrically functional layer (4) and the second electrically functional layer (8} form a checkered pattern.
Abstract:
Provided is an air conditioner including: a heater control section (54) for carrying out duty control on a positive temperature coefficient (PTC) heater (55); and a current detecting section (53) for detecting a current value of the PTC heater (55). The PTC heater (55) starts to be driven at a predetermined duty ratio. When the current value detected by the current detecting section (53) takes a peak (P), a duty ratio increasing process of increasing the duty ratio of the PTC heater (55) by a predetermined amount is repeated until the duty ratio reaches to 100%.
Abstract:
The present invention is directed at methods and apparatus for controlling multi-source heating systems. The multi-source heating systems of the present invention may include two or more heat sources such as a heat pump, a furnace, an electric heating strip, or any other suitable heat source. An illustrative system includes a multi-zone, multi-source heating system. The illustrative system may determine which of the multiple sources to use depending on a number of factors. Some illustrative factors include information about zones calling for heat, external environment information, and information about the heat sources. One of the heat sources may be, for example, a heat pump, and a determination of whether to activate the heat pump may include determining the current heating capacity of the heat pump and comparing the heating capacity to the amount of heat needed to satisfy the current heat calls. Methods for determining which of at least two heat sources to use are also provided. Additional embodiments include methods for controlling multiple-source heating systems, and systems for providing heat with multiple sources.
Abstract:
A heater assembly in an air conditioning unit includes one or more first heating elements characterized by a first wattage density, and one or more second heating elements characterized by a second wattage density. The second wattage density is greater than the first wattage density. The one or more second heating elements are interspersed with the one or more first heating elements.
Abstract:
An adaptive heating apparatus for heating a recreational vehicle, including a first heat unit configured to be powered by a first energy type, a second heat unit configured to be powered by a second energy type that is different than the first energy type, and a forced-air circulation unit. The adaptive heating apparatus is operable to employ the first heat unit during a first heating operation, or alternatively to employ the second heat unit during a second heating operation. The forced-air circulation unit is configured to circulate air through the both heat units during the first heating operation and to circulate air through both heating units during the second heating operation.
Abstract:
A system includes a control switch and a control module. The control switch is configured to drive current through an electrical load in a closed state, and disconnect the electrical load from a power supply in an open state. The control module is configured to connect to a thermostat switch that operates in one of an open state or a closed state based on a temperature of the thermostat switch. The control module is further configured to control a state of the control switch based on a state of the thermostat switch and detect a fault in the control switch based on the state of the thermostat switch and a voltage across the control switch.
Abstract:
An adaptive heating system for optimizing energy resources while heating a confined area. The adaptive heating system includes at least the following components: a controller, a first heat source, a switch device, and a wireline system. The wireline system is configured to connect the controller to the first heat source, a second heat source, and the switch device. The controller is configured to receive an input from the switch device, determine whether the input indicates a selection of the first heat source or a selection of the second heat source, and then initiate operation of either the first or the second heat source, based on the determined selection. The first heat source is associated with an electric heater and the second heat source is associated with a gas furnace.
Abstract:
The present invention is directed at methods and apparatus for controlling multi-source heating systems. The multi-source heating systems of the present invention may include two or more heat sources such as a heat pump, a furnace, an electric heating strip, or any other suitable heat source. An illustrative system includes a multi-zone, multi-source heating system. The illustrative system may determine which of the multiple sources to use depending on a number of factors. Some illustrative factors include information about zones calling for heat, external environment information, and information about the heat sources. One of the heat sources may be, for example, a heat pump, and a determination of whether to activate the heat pump may include determining the current heating capacity of the heat pump and comparing the heating capacity to the amount of heat needed to satisfy the current heat calls. Methods for determining which of at least two heat sources to use are also provided. Additional embodiments include methods for controlling multiple-source heating systems, and systems for providing heat with multiple sources.