GB879393A - Control network for air conditioning units - Google Patents

Control network for air conditioning units

Info

Publication number
GB879393A
GB879393A GB41233/59A GB4123359A GB879393A GB 879393 A GB879393 A GB 879393A GB 41233/59 A GB41233/59 A GB 41233/59A GB 4123359 A GB4123359 A GB 4123359A GB 879393 A GB879393 A GB 879393A
Authority
GB
United Kingdom
Prior art keywords
air
output
signal
amplifier
generated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB41233/59A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Specialties Development Corp
Original Assignee
Specialties Development Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Specialties Development Corp filed Critical Specialties Development Corp
Publication of GB879393A publication Critical patent/GB879393A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F24F2110/70—Carbon dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F24F2120/10—Occupancy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
    • F24F2130/40—Noise
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

879,393. Air-conditioning control systems. SPECIALTIES DEVELOPMENT CORPORATION. Dec. 4, 1959 [Dec. 17, 1958], No. 41233/59. Class 118. An air-conditioning control system comprises means for generating and transmitting an ultrasonic signal, a microphone to detect the signal and means responsive to the difference in amplitude between the generated and received signals which serves to control the air conditioner. An oscillator 10, Fig. 1, for example a self-blocking Hartley type, Fig. 2 (not shown), which generates pulses at a frequency of 60 kc/s. at one second intervals, has its output electrically connected to a transmitter 11 which radiates ultrasonic energy into the enclosure 12. The amount of energy absorbed varies with the number of people in the enclosure and also with the amount of carbon dioxde present, as the radiated energy is of such a frequency as to be sensitive to the molecular relaxation of the air diluted gas. A microphone 13 receives the radiated signal and gives an electrical output to the amplifier 14. The transmitter and microphone may be electroacoustical transducers and the amplifier 14 a simple R.C. coupled adjustable gain type, Fig. 3 (not shown), so that the amplitude of the received signal can be adjusted and passed to a detector 15 together with a selected portion of the generated signal. The detector 15, Fig. 4 (not shown), is arranged to have an output proportional to the difference in amplitude between the generated and received signals by feeding a fixed portion of the generated signal to a rectifier across which a positive D.C. voltage is developed with respect to earth and the output from amplifier 14 is connected to a second rectifier across which a negative D.C. voltage is developed, the two voltages being added and the output applied to an amplifier 16 connected to a control device 17. The device 17 has an output capable of adjusting the controls of the air conditioning means 18, for example the speed of an air blower. If a large enclosure is to be ventilated it may be divided into sections, each section having its own air conditioning unit with a common central,transmitter, Fig. 7 (not shown). Specification 832,847 is referred to.
GB41233/59A 1958-12-17 1959-12-04 Control network for air conditioning units Expired GB879393A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US879393XA 1958-12-17 1958-12-17

Publications (1)

Publication Number Publication Date
GB879393A true GB879393A (en) 1961-10-11

Family

ID=22208169

Family Applications (1)

Application Number Title Priority Date Filing Date
GB41233/59A Expired GB879393A (en) 1958-12-17 1959-12-04 Control network for air conditioning units

Country Status (1)

Country Link
GB (1) GB879393A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1496315A1 (en) * 2002-03-27 2005-01-12 Daikin Industries, Ltd. Air conditioner, remote controller, and ultrasonic wave generating unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1496315A1 (en) * 2002-03-27 2005-01-12 Daikin Industries, Ltd. Air conditioner, remote controller, and ultrasonic wave generating unit
EP1496315A4 (en) * 2002-03-27 2008-01-23 Daikin Ind Ltd Air conditioner, remote controller, and ultrasonic wave generating unit

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