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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0192163 (1994-02-04) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 250 인용 특허 : 0 |
An apparatus and method for controlling energy supplied to a space conditioning load and for overriding a load control operation in response to measuring certain space temperatures within a closed environment. The load control apparatus includes a control device connected to an electrical distributi
An apparatus and method for controlling energy supplied to a space conditioning load and for overriding a load control operation in response to measuring certain space temperatures within a closed environment. The load control apparatus includes a control device connected to an electrical distribution network and to a space conditioning load and a temperature sensing device connected to the control device. The control device conducts a load shedding operation to control distribution of electrical energy to the space conditioning load in response to command signals supplied by a remote command center. The temperature sensing device operates to override the load shedding operation by outputting a control override signal to the control device in response to sensing certain space temperatures within the closed environment. If the temperature control device is connected to an air conditioning system, the temperature sensing device causes the control device to terminate the load shedding operation prior to expiration of a selected time period in response to measuring a space temperature that exceeds a maximum space temperature limit. In contrast, if the temperature control device is connected to a forced air heating system, the temperature sensing device causes the control device to terminate the load shedding operation when a measured space temperature drops below a minimum space temperature limit. The maximum space temperature limit is greater than the control temperature setpoint of a thermostat that controls the space conditioning operations, whereas the minimum space temperature limit is less than the control temperature setpoint.
An improved load control apparatus for controlling distribution of electrical energy by an electrical distribution network to a space conditioning load that conducts space conditioning operations within a closed environment, the space conditioning operations being controlled by a thermostat in respo
An improved load control apparatus for controlling distribution of electrical energy by an electrical distribution network to a space conditioning load that conducts space conditioning operations within a closed environment, the space conditioning operations being controlled by a thermostat in response to the control temperature setpoint of said thermostat, comprising: control means, connected to said space conditioning load via said thermostat and to said electrical distribution network, for interrupting distribution of said electrical energy to said space conditioning load by removing said space conditioning load from said electrical distribution network for a selected time period in response to a selected one of a plurality of command signals transmitted by a command center that is remotely located from said load control apparatus, said selected time period being a variable time period having a time interval that is dependent upon the historical duty cycle of said space conditioning load; and temperature sensing means, connected to said control means, for sensing space temperatures within said closed environment, said temperature sensing means operative to override control by said control means of distribution of said electrical energy to said space conditioning load prior to expiration of said selected time period by outputting a control override signal to said control means in response to sensing one of said space temperatures that exceeds a maximum space temperature limit, said maximum space temperature limit being greater than the control temperature setpoint.
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