TEMPERATURE CONTROL AND SUPERVISION SYSTEM FOR A BUILDING AIR CONDITIONING SYSTEM

• US 3,716,096 A
• Filed: 09/07/1971
• Issued: 02/13/1973
• Est. Priority Date: 09/07/1971
• Status: Expired due to Term

• Current Assignee: James R. Berrett, Roger J. Feulner
• Original Assignee: James R. Berrett, Roger J. Feulner
• Inventors: Berrett, James R., Feulner, Roger J.
• Primary Examiner(s): Perlin, Meyer
• Assistant Examiner(s): Capossela, Ronald C.
• Application Number:
  US05/178,095
• Time in Patent Office: 525 Days
• Field of Search: 62/140,177,180,216,411,412 340/146.1,163 235/151.1 165/22
• US Class Current: 165/209
• CPC Class Codes: F24F 11/00 Control or safety arrangements
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/523 for displaying temperature data
• CPC Class Codes: F24F 11/54 using one central controller connected to several sub-controllers
• CPC Class Codes: F24F 11/56 Remote control
• CPC Class Codes: F24F 11/63 Electronic processing
• CPC Class Codes: F24F 11/76 by means responsive to temperature, e.g. bimetal springs
• CPC Class Codes: F24F 11/83 by controlling the supply of heat-exchange fluids to heat-exchangers
• CPC Class Codes: F24F 11/88 Electrical aspects, e.g. circuits
• CPC Class Codes: F24F 2110/10 Temperature
• CPC Class Codes: F24F 2110/30 Velocity

Abstract

A temperature control and supervision system for controlling and supervising the operation of a building air conditioning system having a central station and a plurality of remote stations connected by a single communication channel, wherein the control and supervision is accomplished by message transmitting and receiving apparatus at the central station and each of the remote stations for generating and interrogating serially coded messages comprising a plurality of bits in binary form.

Claims

1. In a temperature control and supervision system for controlling and supervising the operation of building air conditioning system wherein the physical location of the apparatus of the system is separated such great distances that the use of individual channels of communication between each of the various apparatus to accomplish indication and control would be complex and expensive comprising:

a central station comprising;

air conditioning temperature indicating apparatus for use by an operator to observe the temperature of selected apparatus of a building air conditioning system, air conditioning control apparatus to control selected apparatus of said building air conditioning system, message transmitting and receiving apparatus to transmit and receive serially coded messages comprising a plurality of bits in binary form for a binary code decimal message format, and means connecting said air conditioning temperature indicating apparatus and said air conditioning control apparatus to said message transmitting and receiving apparatus including means for receiving messages in binary code decimal format for providing output signals indicative of temperatures for said air conditioning temperature indicating apparatus and including means for sending messages in binary code decimal format upon receiving signals from said air conditioning control apparatus for controlling remote apparatus of said air conditioning system, a plurality of groups of remote stations each comprising;

second message transmitting and receiving apparatus to transmit and to receive serially coded messages comprising a plurality of bits in binary form for a binary code decimal message format, air conditioning temperature sensing means for sensing the temperature of apparatus of said air conditioning system to provide an output signal indicative of the temperature, air conditioning control means for controlling apparatus of said air conditioning system upon receiving control signals indicative of the change to be accomplished, and means connecting said temperature sensing means and said control means to said second message transmitting and receiving apparatus including means for providing messages in binary code decimal format indicative of temperature upon receiving said output signal of said air conditioning temperature sensing means, and including means upon receiving messages in binary code decimal format indicative of a change to be accomplished for providing control signals to said air conditioning control means, and a single channel transmission means series connecting said message transmitting and receiving apParatus of said central station to each of said second message transmitting and receiving apparatus of said plurality of groups of remote stations whereby serially coded messages having a plurality of bits for a binary code decimal format are sent to and from said central station and said groups of remote stations so that the temperature of said temperature sensing means at any one of said plurality of remote stations can be indicated at said temperature indicating apparatus of said central station and said control means at one of said plurality of remote stations can be controlled by said control apparatus of said central station.