Mobile thermostat to control space temperature in the building

• US 5,419,489 A
• Filed: 01/18/1994
• Issued: 05/30/1995
• Est. Priority Date: 01/18/1994
• Status: Expired due to Fees

• Current Assignee: Burd, Alexander L.
• Original Assignee: Burd, Alexander L.
• Inventors: Burd, Alexander L.
• Primary Examiner(s): Wayner, William E.
• Application Number:
  US08/182,558
• Time in Patent Office: 497 Days
• Field of Search: 236/51, 236/47, 165/26
• US Class Current: 236/47
• CPC Class Codes: G05D 23/1905 associated with tele control

Abstract

The present invention is related to many space heating and cooling systems, which include central building heating and/or cooling source, such as boiler, chiller, furnace, air handling unit, etc. and which have at least one stationary room thermostat to control climate conditions in the building. It is suggested in addition to a stationary thermostat to use an extra thermostat, so called mobile thermostat, to provide flexible room air temperature control at any building location which is critical at the particular moment, including the rooms which do not have a stationary thermostats. This mobile thermostat has an authority, if it is necessary, to be override control of the stationary thermostat at any time and, therefore, to control room space heating and/or space cooling at any particular location to provide a required comfort in any room in the building. The mobile thermostat generates a signal which is transmitted to the master controller, which is installed on central building space heating and/or space cooling plant or on room space heating and/or space cooling unit. A signal through receiving means changes the output capacity of a building plant or room unit responsively to the signal from mobile thermostat to maintain a room air temperature at the particular location in accordance with a setpoint temperature of mobile thermostat.

Claims

1. A building air temperature control for space heating and/or space cooling system having a central heating and/or cooling sources, the said building having a plurality of rooms serviced from the said central heating and/or cooling sources, means to automatically change units heating and/or cooling capacity, the said rooms of the building having at least two air temperature thermostats to control air temperature to provide adequate heating and/or cooling to the rooms, one of the said air temperature thermostats is a stationary thermostat permanently installed in the room and another one is a mobile thermostat located at any place in the building to control air temperature in any of the building'"'"'s rooms, the said mobile thermostat having authority to control air temperature in any room in the building, means provided so that only one thermostat controls room air temperature at any particular time, the said thermostats having means responsive to the current room air temperature value at the location of the thermostats, the said,thermostats having low and high temperature setpoints means, such that when the air temperature in the room at the thermostat location deviates from the said thermostat temperature setpoints the said thermostat generates the signal, the said signal is in proportion to the difference between the thermostat temperature setpoint and the air temperature in the room at thermostat location, the said signal is sent to the master controller, the said master controller having means to receive signals from the said thermostats and to send signals to building central heating and/or cooling system or to room heating and/or cooling system to change their output capacity to satisfy the thermostat'"'"'s air temperature requirements.

2. The control of claim 1 wherein the is a non inertial thermostat which instantly responds to air temperature change in the room at thermostat location, said mobile thermostat can be located on different surfaces of the different rooms inside of building, said mobile thermostat having electrical energy source from stationary electrical network or battery energy source, said mobile thermostat having three normally opened switches, the said first switch serves to energize mobile thermostat operation, said second and third thermostat switches serve for room space heating and/or room space cooling mode control, such that when the first of the said switches is energized the said mobile thermostat permanently generates first signal which is sent to the master controller, the said master controller, upon receiving the first signal from mobile thermostat, overrides control of said stationary thermostat on behalf of mobile thermostat, the second and the third switches of the said mobile thermostat are periodically energized when a room air temperature at the thermostat location is lower than the mobile thermostat low level setpoint temperature (in heating mode) and/or is higher than the mobile thermostat high level setpoint temperature (in cooling mode), as a result of energizing of one of the said switches (switch #2) the second signal is generated, the said signal then is sent to the master controller, the said master controller then sends a resultant signal to building central heating and/or cooling system or to a room heating and/or cooling unit to increase their output capacity, the third switch (switch #3) of said mobile thermostat is energized when a room air temperature at a thermostat location is higher than the mobile thermostat high level setpoint temperature (in heating mode) and/or is lower than the mobile thermostat low level setpoint temperature (in cooling mode), as a result of energizing of said switch the third signal is Generated, the said signal then is sent to the master controller, the said master controller then sends a resultant signal to building central heating and/or cooling system or to a room heating and/or cooling unit to reduce their output capacity.

3. The said stationary thermostat of claim 1 is permanently installed on an internal wall in a room of the building or in a representative room of the building to stabilize controlled room air temperature, the said stationary thermostat is designed to control room air temperature when the mobile thermostat is deenergized, the said stationary thermostat is also used in a start up procedure and to tune up a heating and/or cooling system to provide a predetermined level of heating and/or cooling medium distribution into the room or building, the said thermostat having two switches to control room or building heating and/or cooling modes of operation, when the first signal from mobile from the mobile thermostat is terminated, said master controller overrides said mobile thermostat, the switches of said thermostat are periodically energized when a room air temperature at the thermostat location is lower than the stationary thermostat low level setpoint temperature (in heating mode) and/or is higher than the stationary thermostat high level setpoint temperature (in cooling mode), as a result of energizing of one of the said switches (switch #4) a fourth signal is generated, fourth said signal then is sent to the master controller, the said master controller then sends a resultant signal to the building central heating and/or cooling system or to a room heating and/or cooling unit to increase their output capacity, the second switch of the said stationary thermostat (switch #5) is energized when a room air temperature at a thermostat location is higher than the stationary thermostat high level setpoint temperature (in heating mode) and/or is lower than the stationary thermostat low level setpoint temperature (in cooling mode), as a result of energizing of said switch a fifth signal is generated and is sent to the master controller, the said master controller then sends a resultant signal to the building central heating and/or cooling system or to a room heating and/or cooling unit to reduce their output capacity.

4. The master controller wherein the claim 2, having five inlet channels and two outlet channels to receive signals from said mobile or stationary thermostats and to send a resultant signal to change the output capacity of the heating and/or cooling system to match the said system output capacity to that which is required by the room at any particular time, when the said master controller receives the first signal from the said mobile thermostat, its inlet channels number 2 and number 3 are opened and its inlet channels number 4 and number 5 are closed, thus, as soon as the first signal is received by the master controller, the said mobile thermostat has become solely responsible for control of the room air temperature, the signals received through the channels number 2 and number 3 at first may get through a signal amplifier to enhance the said signals to the value that is required by the said master controller to be able to identify the signal, as soon as the first signal from the said mobile thermostat is terminated, the said master controller closes its inlet channels number 2 and number 3 for reception and opens its inlet channels number 4 and number 5 for reception, thus the said stationary thermostat has become solely responsible for control of the room air temperature.