FR2323958A1 - Electronic control system for air conditioning - varies supply air temperature in accordance with room temperature - Google Patents

Electronic control system for air conditioning - varies supply air temperature in accordance with room temperature

Info

Publication number
FR2323958A1
FR2323958A1 FR7626889A FR7626889A FR2323958A1 FR 2323958 A1 FR2323958 A1 FR 2323958A1 FR 7626889 A FR7626889 A FR 7626889A FR 7626889 A FR7626889 A FR 7626889A FR 2323958 A1 FR2323958 A1 FR 2323958A1
Authority
FR
France
Prior art keywords
electronic control
accordance
control system
temperature
supply air
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.)
Withdrawn
Application number
FR7626889A
Other languages
French (fr)
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.)
Danfoss AS
Original Assignee
Danfoss AS
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 Danfoss AS filed Critical Danfoss AS
Publication of FR2323958A1 publication Critical patent/FR2323958A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1902—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value
    • G05D23/1904—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value variable in time
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller
    • G05D23/1921—Control of temperature characterised by the use of electric means characterised by the type of controller using a thermal motor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Air Conditioning Control Device (AREA)
  • Filling, Topping-Up Batteries (AREA)

Abstract

Supply air is brought into a room (3) by a duct (1) which contains a heater battery (5). A duct thermostat (KF) after the heater battery and a room thermostat (RF) are both connected to an electronic control circuit (8). The output of the circuit is fed to a positioning motor (9) which moves a valve in the water flow to the heater battery. Within the control circuit the room thermostat forms one branch of a resistance bridge circuit the output of which is amplified and fed as a desired value to a second resistance bridge circuit which contains the duct thermostat as one arm. The control circuit also contains rectifying and smoothing sections to provide d.c. to the bridges and amplifier.
FR7626889A 1975-09-10 1976-09-07 Electronic control system for air conditioning - varies supply air temperature in accordance with room temperature Withdrawn FR2323958A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752540169 DE2540169B2 (en) 1975-09-10 1975-09-10 CONTROL CIRCUIT FOR AN AIR CONDITIONING SYSTEM

Publications (1)

Publication Number Publication Date
FR2323958A1 true FR2323958A1 (en) 1977-04-08

Family

ID=5956002

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7626889A Withdrawn FR2323958A1 (en) 1975-09-10 1976-09-07 Electronic control system for air conditioning - varies supply air temperature in accordance with room temperature

Country Status (3)

Country Link
DE (1) DE2540169B2 (en)
DK (1) DK407976A (en)
FR (1) FR2323958A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2909932C2 (en) * 1979-03-14 1982-12-16 Danfoss A/S, 6430 Nordborg Control device for an air conditioning system
DE3811189A1 (en) * 1988-04-01 1989-10-19 Sueddeutsche Kuehler Behr Method for environmental control in electrical switching cabinets

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2077153A5 (en) * 1970-01-30 1971-10-15 Centra Buerkle Kg Albert

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2077153A5 (en) * 1970-01-30 1971-10-15 Centra Buerkle Kg Albert

Also Published As

Publication number Publication date
DK407976A (en) 1977-03-11
DE2540169A1 (en) 1977-03-24
DE2540169B2 (en) 1978-01-26

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Legal Events

Date Code Title Description
ST Notification of lapse