EP0856136A1 - Systeme de ventilation - Google Patents

Systeme de ventilation

Info

Publication number
EP0856136A1
EP0856136A1 EP96935013A EP96935013A EP0856136A1 EP 0856136 A1 EP0856136 A1 EP 0856136A1 EP 96935013 A EP96935013 A EP 96935013A EP 96935013 A EP96935013 A EP 96935013A EP 0856136 A1 EP0856136 A1 EP 0856136A1
Authority
EP
European Patent Office
Prior art keywords
room
ventilator
ventilation
control system
climate control
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.)
Ceased
Application number
EP96935013A
Other languages
German (de)
English (en)
Inventor
Howard Atkin
Chris Palmer
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.)
Advanced Design and Manufacture Ltd
Original Assignee
Advanced Design and Manufacture Ltd
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 Advanced Design and Manufacture Ltd filed Critical Advanced Design and Manufacture Ltd
Publication of EP0856136A1 publication Critical patent/EP0856136A1/fr
Ceased 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
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
    • 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
    • F24F11/46—Improving electric energy efficiency or saving
    • 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
    • F24F11/30—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
    • F24F2120/00—Control inputs relating to users or occupants
    • F24F2120/10—Occupancy
    • 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]
    • Y02B30/56—Heat recovery units
    • 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

Definitions

  • This invention relates to a ventilation system and particularly, but not exclusively, to a ventilation system for use in controlling the humidity in a domestic environment, particularly in bedrooms.
  • the invention also relates to a ventilation system combined with a filtration system and/or a de-humidifier, and to each of these systems separately.
  • a method of controlling the relative humidity in a room comprising the steps of: ventilating a room substantially continuously using a ventilator; controlling the rate of ventilation such that the rate of ventilation is lower when the room is occupied.
  • a climate control system for controlling the relative humidity in a room the system comprising: a ventilator; control means for controlling the ventilation rate of the ventilator whereby ventilation rate is lower when the room is occupied.
  • any suitable ventilator may be used in the climate control system, but preferably the ventilator is a heat recovery ventilator .
  • the invention has been described in terms of a method and system for controlling relative humidity in a room, it is intended that the invention is equally applicable to any substantially confined area, for example, domestic rooms such as bedrooms, kitchens, bathrooms, and also to a whole house comprising a number of rooms.
  • the invention provides a balanced ventilation system which provides continuous control of moisture levels and a supply of fresh filtered air to the room or area being ventilated.
  • the heat recovery ventilator is of the type described in UK patent publication number 2224111 the contents of which are incorporated herein by reference.
  • the system has a relatively low power requirement, for example, about 15 watts.
  • control system is operable at a plurality of different ventilation rates.
  • the system is operable at two different ventilation rates .
  • the lower ventilation rate occurs when the room is occupied.
  • the lower rate of operation will occur during the night when the occupants are asleep.
  • the ventilator will operate at the higher rate when the room is unoccupied. When the system is used in a bedroom the ventilator will operate at a higher rate during the day. This means that typically the ventilator will operate for perhaps two thirds of the day at a higher rate and perhaps one third of the day at a lower overnight rate.
  • the present invention operates in an opposite sense and has higher output operation during non-occupancy and lower output operation during room occupancy.
  • venting of the room is achieved throughout a 24 hour period whilst the windows of the room remain closed.
  • the relative humidity level of a room is lowered, the ventilation is improved and in addition the system is thermally efficient because heat is transferred from the spent air to the incoming fresh air.
  • control means comprises a trigger, for example, an infra-red sensor which may detect when the room is occupied.
  • the control means thus causes the system to switch to a lower ventilation rate when the sensor senses that the room is occupied.
  • control means comprises a timer which will cause a switch to trigger the system to operate at a lower rate say, for example, at 10pm when the occupants of the house will be retiring, and then will trigger the system to work at the faster rate, for example, at 7am the next morning when the occupants may be getting up.
  • Figure 1 is a schematic representation of a ventilator used in the method of the first aspect of the present invention, and forming part of the climate control system of the second aspect of the present invention;
  • Figure 2 is a schematic representation of the ventilator of Figure 1 installed in the wall of a building;
  • FIG. 3 is a schematic representation of a basic switch suitable for use in the control means of the present invention.
  • Figure 4 is a schematic representation of a second embodiment of a switch suitable for use as the control means forming part of the present invention.
  • a ventilator of the type suitable for use in the climate control system of the present invention is designated generally by the reference numeral 1.
  • the ventilator comprises a heat exchanger 2, a fan/motor unit 3.
  • Supply air typically from outside the building enters the ventilator at 4.
  • the supply air is drawn through the ventilator by means of the fan 3 and exits the ventilator at 5 where it enters the room in which it is installed.
  • Stale air from the room enters the ventilator at 6 and is drawn through the ventilator 1 to exit at 7 into the outside air.
  • the ventilator 1 is installed in an external wall 8 of a room in which the climate is to be controlled.
  • the ventilator 1 further comprises control means 9 for controlling the ventilator such that it operates at a higher rate when the room is not occupied.
  • the ventilator 1 serves to provide fresh pre-warmed air from outside continually to the room in which the climate is to be controlled whilst simultaneously extracting stale moist air from the room. Heat is transferred from the outgoing air via the heat exchanger to the fresh air supply maintaining internal temperatures and providing a fresh environment.
  • the switch 30 is connected to the ventilator system 31 in such a way that the ventilator system may work at either a high speed or a low speed.
  • the ventilator system 31 comprises a fan heat recovery unit 32, a de-humidifier 33 and a high efficiency filter fan 34.
  • the switch comprises a live connection 35 and a neutral connection 36. Connection to point 37 will result in the ventilator system 31 operating at a low speed and connection to point 38 will result in the ventilator system operating at a high speed.
  • the switch system is designated generally by the reference numeral 40 and comprises three switches 41, 42, and 43.
  • the switch system 40 comprises a ten year clock which controls switch 41 and which may be programmed with switch on times for up to ten years.
  • the switch system 40 would further include a back up memory.
  • Such a control system can allow for weekend settings and can even account for leap years. It may be used alone or with switches 42, 43.
  • the switch 41 has two main settings, one connected to point 44 which is the night time setting and the second connected to point 45 which is the day time setting.
  • Switch 42 is controlled by a humidity sensor (not shown) which senses room humidity levels.
  • the switch has two settings and when connected to point 46 presents acceptable humidity and to point 47 represents high humidity, ie relative humidity above the set point.
  • the switch 42 can be used alone with other switches 41, 43. It will inhibit operation of the ventilator during day time or occupied time if it senses that there is low or normal humidity, and will cause the ventilator system to switch to high speed only when high humidity is sensed.
  • the humidity sensor typically comprises a thin polymer film the electric resistance of which changes with humidity.
  • An electronic circuit amplifies these minute changes so that at a given point, say 70% relative humidity, the humidity sensor will switch a relay.
  • the relay opens the high speed circuit and at the same time closes the low speed circui t .
  • the set point can be tested from anything between 40% relative humidity to 90% relative humidity, for example.
  • Switch 43 is controlled by a second timer or passive infra red switch or air quality sensor. It can be used with other switches and sensors or on its own.
  • the timer will allow variations in occupied or unoccupied running periods during day time running.
  • the passive infra red sensor will switch to the low speed if the ventilator unit detects that people are in the room.
  • the air quality sensor will cause the system to switch to high rates or low rates during the day time depending upon internal conditions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Ventilation (AREA)

Abstract

La présente invention concerne un climatiseur équipé d'un ventilateur (1) commandé par un régulateur (9) et d'un commutateur (30) raccordé au système de ventilation (31) de façon que le système de ventilation puisse fonctionner soit à haut régime, soit à bas régime. Le ventilateur fonctionne normalement à bas régime lorsque la pièce à ventiler est occupée, et à haut régime lorsque la pièce à ventiler n'est pas occupée.
EP96935013A 1995-10-21 1996-10-16 Systeme de ventilation Ceased EP0856136A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9521632 1995-10-21
GBGB9521632.1A GB9521632D0 (en) 1995-10-21 1995-10-21 Ventilation system
PCT/GB1996/002536 WO1997015793A1 (fr) 1995-10-21 1996-10-16 Systeme de ventilation

Publications (1)

Publication Number Publication Date
EP0856136A1 true EP0856136A1 (fr) 1998-08-05

Family

ID=10782725

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96935013A Ceased EP0856136A1 (fr) 1995-10-21 1996-10-16 Systeme de ventilation

Country Status (4)

Country Link
EP (1) EP0856136A1 (fr)
AU (1) AU7311796A (fr)
GB (1) GB9521632D0 (fr)
WO (1) WO1997015793A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9711692D0 (en) * 1997-06-06 1997-08-06 Mediclean Corp Ltd Improvements relating to methods of controlling environments
WO1999043992A1 (fr) * 1998-02-27 1999-09-02 Georges Spoehrle Dispositif integre, prefabrique et modulaire, de chauffage et de ventilation d'un local de batiment
US9261290B2 (en) 2011-03-29 2016-02-16 Trane International Inc. Methods and systems for controlling an energy recovery ventilator (ERV)
EP2716987A3 (fr) * 2012-10-05 2018-03-14 IFN-Holding AG Commande pour un ventilateur d'ambiance, système de ventilation et fenêtre dotée d'un ventilateur d'ambiance
GB2521217B (en) * 2013-12-16 2017-12-06 Vent-Axia Group Ltd Extractor fan and control system therefor
DE102018003346A1 (de) * 2018-01-02 2019-07-04 Kampmann Gmbh Vorrichtung zum Lüften von Räumen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0792257B2 (ja) * 1988-08-09 1995-10-09 株式会社東芝 空気調和装置
GB8824052D0 (en) * 1988-10-13 1988-11-23 Advanced Design & Mfg Ltd Improvements in & relating to heat exchangers
JPH03134429A (ja) * 1989-10-17 1991-06-07 Fujitsu General Ltd 空気調和機
DK615289D0 (da) * 1989-12-06 1989-12-06 Turbovent As Varmegenvindende ventilator
JP2714220B2 (ja) * 1990-03-31 1998-02-16 株式会社東芝 換気装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9715793A1 *

Also Published As

Publication number Publication date
AU7311796A (en) 1997-05-15
GB9521632D0 (en) 1996-01-03
WO1997015793A1 (fr) 1997-05-01

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