GB876402A - Dual duct attenuators for air conditioning systems - Google Patents

Dual duct attenuators for air conditioning systems

Info

Publication number
GB876402A
GB876402A GB35452/58A GB3545258A GB876402A GB 876402 A GB876402 A GB 876402A GB 35452/58 A GB35452/58 A GB 35452/58A GB 3545258 A GB3545258 A GB 3545258A GB 876402 A GB876402 A GB 876402A
Authority
GB
United Kingdom
Prior art keywords
rod
pivoted
motor
dampers
control member
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
GB35452/58A
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.)
CONNOR ENG CORP
Original Assignee
CONNOR ENG 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 CONNOR ENG CORP filed Critical CONNOR ENG CORP
Publication of GB876402A publication Critical patent/GB876402A/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
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/044—Systems in which all treatment is given in the central station, i.e. all-air systems
    • F24F3/048—Systems in which all treatment is given in the central station, i.e. all-air systems with temperature control at constant rate of air-flow
    • F24F3/052—Multiple duct systems, e.g. systems in which hot and cold air are supplied by separate circuits from the central station to mixing chambers in the spaces to be conditioned
    • F24F3/0522—Multiple duct systems, e.g. systems in which hot and cold air are supplied by separate circuits from the central station to mixing chambers in the spaces to be conditioned in which warm or cold air from the central station is delivered via individual pipes to mixing chambers in the space to be treated, the cold air/warm air ratio being controlled by a thermostat in the space concerned, i.e. so-called Dual-duct System

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Multiple-Way Valves (AREA)

Abstract

876,402. Ventilation. CONNOR ENGINEERING CORPORATION. Nov. 4, 1958 [Nov. 20, 1957], No. 35452/58. Class 137. A dual duct valve attenuator in an air conditioning system comprises separate hot and cold air ducts 2 and 3 which have variable dampers 6 and 6a connected by flexible cables 11 and 23 to an oscillating control member 20, so that actuation of the control 20 effects simultaneous opening of one duct and closing of the other. The dampers 6 and 6a are helical compression springs and the ducts are closed by caps 7 and 8 which are attached to a bell crank control member ZU at 19 and 29, via rod 8a, flexible cable 11 and pulley system 12,13 and 15, and rod 8a, cable 23 and pulley system 26, 24 and 25 respectively. The pulleys 15 and 25 are located on an adjustable arm 17 which is movable on a threaded rod 34, the position of the arm 17 determining the effective length of cables 11 and 23 and thus the extent of the opening of the dampers 6 or 6a whilst maintaining the total air volume constant. In Fig. 1 the bell crank 20 is pivotally mounted at 31 and its movement is effected by a link 32 which is pivoted at 33 eccentrically of the pivot 31. In Fig. 7, a lever 40 pivoted at 41, replaces the member 17 and the T-shaped control member 20 is operated by a rod 42 connected to a motor 43 controlled by a thermostat 44. In another embodiment, see Fig..9, a motor 50 is connected to a link 32a pivoted to the T element 20 at 33a and a motor 51 controlled by a pressure response device regulates the air volume flowing into the mixing chamber by automatically raising or lowering a lever 40a carrying pulleys 13a and 24a over which the flexible cables 11 and 23 extend.
GB35452/58A 1957-11-20 1958-11-04 Dual duct attenuators for air conditioning systems Expired GB876402A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US876402XA 1957-11-20 1957-11-20

Publications (1)

Publication Number Publication Date
GB876402A true GB876402A (en) 1961-08-30

Family

ID=22206369

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35452/58A Expired GB876402A (en) 1957-11-20 1958-11-04 Dual duct attenuators for air conditioning systems

Country Status (1)

Country Link
GB (1) GB876402A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110655014A (en) * 2019-09-30 2020-01-07 大唐东营发电有限公司 Boiler maintenance platform for power plant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110655014A (en) * 2019-09-30 2020-01-07 大唐东营发电有限公司 Boiler maintenance platform for power plant

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