EP0699874B1 - Méthode pour contrôler un dispositif de ventilation - Google Patents

Méthode pour contrôler un dispositif de ventilation Download PDF

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Publication number
EP0699874B1
EP0699874B1 EP95850147A EP95850147A EP0699874B1 EP 0699874 B1 EP0699874 B1 EP 0699874B1 EP 95850147 A EP95850147 A EP 95850147A EP 95850147 A EP95850147 A EP 95850147A EP 0699874 B1 EP0699874 B1 EP 0699874B1
Authority
EP
European Patent Office
Prior art keywords
temperature
flow
control
control unit
controlling
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 - Lifetime
Application number
EP95850147A
Other languages
German (de)
English (en)
Other versions
EP0699874A2 (fr
EP0699874A3 (fr
Inventor
Örjan GÖTMALM
Thomas Ahlfors
Gary BERGSTRÖM
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.)
UK Secretary of State for Defence
ABB Technology FLB AB
Original Assignee
UK Secretary of State for Defence
ABB Flaekt AB
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 UK Secretary of State for Defence, ABB Flaekt AB filed Critical UK Secretary of State for Defence
Publication of EP0699874A2 publication Critical patent/EP0699874A2/fr
Publication of EP0699874A3 publication Critical patent/EP0699874A3/fr
Application granted granted Critical
Publication of EP0699874B1 publication Critical patent/EP0699874B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
    • B63J2/02—Ventilation; Air-conditioning
    • B63J2/04—Ventilation; Air-conditioning of living spaces
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • 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
    • F24F11/70—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
    • 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

Definitions

  • the present invention relates to a method for controlling a ventilating apparatus for ventilation and temperature control of accommodations, e.g. in vessels, which apparatus is connected to at least one ventilation channel and comprises means for volume control of the air flow to the accommodation, means for temperature control of the air flow to the accommodation, and a control unit for controlling the flow and temperature, for adaption to a desired temperature level, wherein the control unit is manipulated for reduction of temperature from a value of origin to a desired value which is at a certain distance from said value of origin.
  • air is supplied to accommodation areas like for example cabins.
  • the air is used for controlling the temperature in the accommodation area and for replacing air which is ventilated out from the area.
  • Each accommodation area which is ventilated in this way is normally provided with a thermostat, in order to be able to receive values to some sort of regulating or climate control system.
  • a damper means is adjusted automatically in the ventilation apparatus on the basis of a desired value, for example in order to increase the amount of cold air. In cruising ships it is common that the amount of cold air is dimensioned for subsystems and components included in the ventilation system. In this respect, coincident factors are utilized, for avoiding oversizing the systems.
  • an air conditioning apparatus for ventilation and temperature control of accommodations which is connected to a ventilation channel and comprises means for volume control of the air flow to an accommodation, means for temperature control of the air flow to the accommodation, and a control unit for controlling the flow and temperature, for adaption to a desired temperature level.
  • the apparatus comprises an air flow rate sensor and throttle valve which controls the opening of a duct in accordance with the detection signals from the air flow rate sensor.
  • One object of the present invention is to provide a ventilation apparatus with compact installation dimensions, which result in a low intrinsic pressure drop for efficient air supply, with accurate damping over a large flow range, and with a small generation of noise over the entire said flow range.
  • pressure gauges of simple construction can be used.
  • the embodiment of the ventilation system shown in Fig. 1 comprises a ventilation channel 10, a ventilation apparatus 11, a diffusor 12 and a control unit 13.
  • the ventilation channel 10 supplies dried and cool tempered fresh air, which is controlled with regard to flow and temperature in the ventilation apparatus 11.
  • the ventilation apparatus is provided with not shown means for volume control of the air flow to the diffusor 12 and means for heating the ventilation air.
  • hot and cold air may be supplied to the diffusor via a two channel system, wherein mixing and flow control of the air can be performed in a combined ventilation apparatus/diffusor.
  • the control unit 13 conventionally provided with a not shown temperature sensor for sensing the temperature in the area which the control unit is mounted within. Ventilation openings 14 in the cover which encloses the temperature sensor ensures that the sensor is in contact with the surrounding temperature.
  • the control unit 13 is on its front side provided with a control panel which comprises three control buttons 15, 16 and 17. Of these buttons, the button 15 is used for increasing temperature, the button 16 is used for reduction, and the button 17 is used for producing a rapid reduction of temperature in the area. A series of light emitting diodes 18 are used for indication of temperature alterations from a normal value.
  • the area When the button 17 is pressed, the area will rapidly be supplied with the maximum available amount of cool air for a pre-programmed period of time, e.g. 10 minutes.
  • a microcomputer within the control unit 13 requests that the temperature of the area will be allowed to rise to the temperature which prevailed in the area before pressing the button, minus for example 1 °C.
  • This manner of controlling is based upon the assumption, that it could be presumed that the person which pressed the button 17 believed that it was too hot in the cabin, and therefore did not want a return to the temperature which prevailed before said pressing of the button. Also it is sufficient, e.g.
  • a step motor controlled damper can be made to open, e.g. two times faster than in normal controlling, in order to expedite cooling of the cabin, without premature wear out of, or need for oversizing the step motor and the damper mechanism for this reason.
  • Fig. 1 is shown the connection of a computer 19 to the control 13.
  • the computer is used for adjusting in the ventilation apparatus, with regard to the flow control range of the damper means.
  • an automatic calibration is used with a periodicity which provides an acceptable degree of accuracy for the pressure gauge between calibrations. These are performed by providing a zero flow through the ventilation system, wherein the outsignal is measured. The value is stored in a memory and is used for adjusting the outsignal. The zero flow is accomplished by stopping the fan which serves the system by a time function. The calibration is performed zero flow is obtained during a certain period of time. The detection that a zero flow is obtained will be assumed to exist whenever the outsignal from the pressure gauge falls below a certain level.
  • control unit 13 This is avoided by also supplying the control unit 13 with information about characteristics for the means for volume flow control with regard to position - supply pressure - received volume flow, so that alterations in position can be performed more rapidly and more precisely.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Air Conditioning Control Device (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Nozzles (AREA)
  • Ventilation (AREA)

Claims (3)

  1. Procédé de contrôle d'un dispositif de ventilation (11) destiné à la régulation de la ventilation et de la température de volumes habitables, par exemple à bord de navires, ce dispositif étant raccordé à au moins un conduit de ventilation (10) et comprenant des moyens pour la régulation du volume de l'écoulement d'air vers le volume habitable, des moyens pour la régulation de la température de l'écoulement d'air vers le volume habitable, et une unité (13) de régulation de l'écoulement et de la température, pour adaptation à un niveau de température désiré, dans lequel l'unité (13) de régulation est manipulée pour une réduction de température d'une valeur d'origine à une valeur recherchée qui est à un certain gradient de ladite valeur d'origine,
        caractérisé en ce que le procédé comprend une réduction rapide de la fonction température (17) avec les étapes suivantes :
    les moyens de régulation de l'écoulement et les moyens de régulation de la température sont réglés pour une réduction rapide de la température dans la zone, grâce à quoi la zone reçoit la quantité maximale disponible d'air froid pendant une durée programmée,
    et en ce que ces moyens, une fois achevée cette durée, sont remis à l'état initial pour assurer un niveau de température qui est inférieur à la valeur d'origine qui existait avant que ne débute la réduction rapide de température.
  2. Procédé selon la Revendication 1, caractérisé en ce qu 'un contrôle précis de l'écoulement est obtenu par un étalonnage à zéro régulièrement récurant d'un manomètre différentiel incorporé à l'unité (13) de régulation, lequel étalonnage est effectué par une détection d'un écoulement zéro par ladite unité de régulation.
  3. Procédé selon la Revendication 1, caractérisé en ce que l'unité (13) de régulation reçoit des informations concernant les caractéristiques d'amortissement pour les moyens de régulation du volume de l'écoulement, lesquelles informations peuvent être utilisées pour un contrôle rapide et précis de la température du volume habitable, et pour économiser de l'énergie.
EP95850147A 1994-09-05 1995-08-29 Méthode pour contrôler un dispositif de ventilation Expired - Lifetime EP0699874B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9402965 1994-09-05
SE9402965A SE503354C2 (sv) 1994-09-05 1994-09-05 Förfarande för styrning av en tilluftapparat för ventilering och temperaturreglering av utrymmen

Publications (3)

Publication Number Publication Date
EP0699874A2 EP0699874A2 (fr) 1996-03-06
EP0699874A3 EP0699874A3 (fr) 1997-10-22
EP0699874B1 true EP0699874B1 (fr) 2001-10-31

Family

ID=20395140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95850147A Expired - Lifetime EP0699874B1 (fr) 1994-09-05 1995-08-29 Méthode pour contrôler un dispositif de ventilation

Country Status (6)

Country Link
EP (1) EP0699874B1 (fr)
DE (1) DE69523523T2 (fr)
DK (1) DK0699874T3 (fr)
FI (1) FI114821B (fr)
NO (1) NO179884C (fr)
SE (1) SE503354C2 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3716096A (en) * 1971-09-07 1973-02-13 Honeywell Inc Temperature control and supervision system for a building air conditioning system
JPS58165531U (ja) * 1982-04-28 1983-11-04 東京プレス工業株式会社 二重天井をサプライチヤンバとした空気調和装置
US4897798A (en) * 1986-12-08 1990-01-30 American Telephone And Telegraph Company Adaptive environment control system
US5276630A (en) * 1990-07-23 1994-01-04 American Standard Inc. Self configuring controller
US5318099A (en) * 1992-08-17 1994-06-07 Johnson Service Company Method and apparatus for emulating a perimeter induction unit air conditioning system

Also Published As

Publication number Publication date
FI954077A (fi) 1996-03-06
NO179884C (no) 1997-01-08
FI114821B (fi) 2004-12-31
DE69523523T2 (de) 2002-06-06
SE9402965L (sv) 1996-03-06
SE503354C2 (sv) 1996-05-28
DE69523523D1 (de) 2001-12-06
NO179884B (no) 1996-09-23
FI954077A0 (fi) 1995-08-31
EP0699874A2 (fr) 1996-03-06
SE9402965D0 (sv) 1994-09-05
NO953472L (no) 1996-03-06
NO953472D0 (no) 1995-09-04
DK0699874T3 (da) 2002-02-25
EP0699874A3 (fr) 1997-10-22

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