EP1110037A1 - Improvements in and relating to an air supply valve - Google Patents

Improvements in and relating to an air supply valve

Info

Publication number
EP1110037A1
EP1110037A1 EP99933326A EP99933326A EP1110037A1 EP 1110037 A1 EP1110037 A1 EP 1110037A1 EP 99933326 A EP99933326 A EP 99933326A EP 99933326 A EP99933326 A EP 99933326A EP 1110037 A1 EP1110037 A1 EP 1110037A1
Authority
EP
European Patent Office
Prior art keywords
shutter blade
air supply
supply valve
shutter
turning
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Withdrawn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
EP99933326A
Other languages
German (de)
French (fr)
Inventor
Göran WIDEN
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.)
PAX ELECTRO PRODUCTS AB
Original Assignee
PAX ELECTRO PRODUCTS 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 PAX ELECTRO PRODUCTS AB filed Critical PAX ELECTRO PRODUCTS AB
Publication of EP1110037A1 publication Critical patent/EP1110037A1/en
Withdrawn legal-status Critical Current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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • 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
    • F24F11/76—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 means responsive to temperature, e.g. bimetal springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • 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
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature

Definitions

  • the present invention refers to an air supply valve comprising a shutter housing with an adjustable shutter blade fitted inside, which from a first completely closed position can be turned through a predetermined angle to an open position.
  • Inlet air supply valves of this type are common for controlling air entering a building and are either manually or automatically adjustable, depending on the outdoor air temperature. At colder temperatures, for example -10°C, the valves are usually closed. At temperatures above -10°C, the valve opens either manually or automatically.
  • the problems with the known valves are that those valves which are adjusted automatically cannot at the same time be be adjusted manually for closing in a simple manner, if it should become necessary. Further, the valves which are manually adjustable are not suitable for automatic adjustment .
  • the object with the present invention is to solve the problems with known air supply valves, and to provide an inlet air supply valve which can be controlled both manually and automatically.
  • an air supply valve according to the invention can easily be complemented with a thermostat unit, which then enables both automatic and manual adjustment of the valve.
  • the characterizing features of the invention are stated in the following claims. Due to the invention, an air supply valve has been provided which satisfies its purpose in an excellent manner, as well as it is both simple and inexpensive to manufacture.
  • the shutter blade in the air supply valve according to the invention is provided turnable around a shaft in the centre of the shutter housing. In a first position, the shutter blade is completely closed, and after turning the same through a predetermined angle, the shutter blade is in a maximum open position. Due to the air supply valve being complemented with a thermostat unit, this first adjustment of the shutter blade can be achieved automatically. From the open position, the shutter blade can be turned further manually through a predetermined angle to the fully closed position without affecting the thermostat control.
  • the manual control of the shutter blade is made by means of gears and a self-cleaning gear rack, which prevents debris, grease and similar, which otherwise easily gets caught in the valve, do not hamper the function of the adjustment of the shutter blade.
  • Fig. 1 shows a schematic perspective view diagonally from the rear of an air supply valve according to the invention having a thermostat unit fitted to the shutter blade,
  • Fig. 2 shows the valve illustrated in Fig. 1 in a schematic perspective view from the opposite direction
  • Fig. 3 shows an exploded view of the air supply valve according to Fig. 1 and 2, which indicates how the various included parts are fitted in relation to each other, and
  • Fig. 4 shows a schematic exploded view in perspective seen from the opposite direction than what is the case in Fig. 3 with the various parts dismantled and then especially, the thermostat unit.'
  • the preferred embodiment example consists of an air supply valve 1 according to the present invention, and a shutter housing 2 with a shutter blade 3 that can be turned fitted inside the housing.
  • the valve 1 is according to the preferred example designed so that the shutter blade 3 is biased with a torsion spring, not shown on the drawing, in its closed, first position shown in Fig. 1 and 2.
  • the shutter blade 3 can be turned through a predetermined angle to an open position, using a thermostat unit 4 fitted to the shutter blade 3. From the open position, to which the shutter blade 3 has been turned by means of the thermostat unit 4, if desired, the shutter blade 3 can then be closed manually by turning it further through a predetermined angle to a second fully closed position.
  • the manual control of the shutter blade 3 is achieved via a lever 19 with at least one gear 6 ; 7 acting on a gear rack 5, which in turn actuates turning of the shutter blade 3.
  • the gear rack 5, in the shown example, consists of a plate 8 with rectangularly formed slots 9 for engagement with said gears 6 , 1 . Due to this design of gear rack 5, it becomes self- cleaning from grease, debris and similar.
  • the shutter blade " 3 has a centrally located recess 10, in which the position of the thermostat unit 4 can be secured with a simple hand movement.
  • the output torsion shaft 11 of the thermostat unit 4 moves in relation to the influence of an outdoor temperature sensor 12, and the torsion shaft 11 in turn actuates the adjustment of the shutter blade 3.
  • the ' thermostat unit 4 consists of, in addition to the sensor 12, a guide sleeve 16 with a covering torsion spring 17 and a turning device 13, which shows two opposing, diagonally cut steps 14, 15, which transfer the linear movements of the sensor 12 to a turning motion, and the parts are held together by a clamp element 20. The turning motion is thus transferred from the turning device 13 to the underlying shutter housing 2 for turning of the shutter blade 3.
  • the gear wheel 6 located under the thermostat unit 4 shows a number of sequentially arranged gear teeth 18 only mainly along half its periphery corresponding to the turning of the shutter blade, which is manual.
  • the air supply valve according to the invention 1 functions as follows. In cases where the shutter blade 3 has been fitted with a thermostat unit 4, there is an automatic adjustment the first 70-90° according to the outdoor temperature during the first opening phase of the shutter blade 3 from closed to open position. After this, the shutter blade 3 can be closed manually by turning through another predetermined angle to approximately 140-180°. In case a thermostat unit 4 has not yet been fitted to the shutter blade 3, opening and closing of the valve 1 is performed only manually, and then in a range which covers the shutter blade 3 second opening phase, from open to closed, and back.

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)
  • Temperature-Responsive Valves (AREA)
  • Air-Flow Control Members (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Lift Valve (AREA)

Abstract

The invention refers to an improvement in and relating to an air supply valve (1), comprising a shutter housing (2) with an adjustable shutter blade (3) fitted inside which from a first completely closed position is turnable through a predetermined angle to an open position. The shutter blade (3) is on one hand manually turnable from the said open position further through another predetermined angle to a second completely closed position and is on the other automatically adjustable according to the outdoor temperature during turning of the shutter blade (3) from the first closed position to said open position, using a thermostat unit (4) that is fitted to the shutter blade (3).

Description

Improvements in and relating to an air supply valve
The present invention refers to an air supply valve comprising a shutter housing with an adjustable shutter blade fitted inside, which from a first completely closed position can be turned through a predetermined angle to an open position.
Inlet air supply valves of this type are common for controlling air entering a building and are either manually or automatically adjustable, depending on the outdoor air temperature. At colder temperatures, for example -10°C, the valves are usually closed. At temperatures above -10°C, the valve opens either manually or automatically. The problems with the known valves are that those valves which are adjusted automatically cannot at the same time be be adjusted manually for closing in a simple manner, if it should become necessary. Further, the valves which are manually adjustable are not suitable for automatic adjustment .
The object with the present invention is to solve the problems with known air supply valves, and to provide an inlet air supply valve which can be controlled both manually and automatically.
Another object with the invention is that an air supply valve according to the invention, originally intended for manual adjustment, can easily be complemented with a thermostat unit, which then enables both automatic and manual adjustment of the valve. The characterizing features of the invention are stated in the following claims. Due to the invention, an air supply valve has been provided which satisfies its purpose in an excellent manner, as well as it is both simple and inexpensive to manufacture. The shutter blade in the air supply valve according to the invention is provided turnable around a shaft in the centre of the shutter housing. In a first position, the shutter blade is completely closed, and after turning the same through a predetermined angle, the shutter blade is in a maximum open position. Due to the air supply valve being complemented with a thermostat unit, this first adjustment of the shutter blade can be achieved automatically. From the open position, the shutter blade can be turned further manually through a predetermined angle to the fully closed position without affecting the thermostat control.
The manual control of the shutter blade is made by means of gears and a self-cleaning gear rack, which prevents debris, grease and similar, which otherwise easily gets caught in the valve, do not hamper the function of the adjustment of the shutter blade.
The invention is further described below with the aid of a preferred embodiment example and with reference to the accompanying drawings, where
Fig. 1 shows a schematic perspective view diagonally from the rear of an air supply valve according to the invention having a thermostat unit fitted to the shutter blade,
Fig. 2 shows the valve illustrated in Fig. 1 in a schematic perspective view from the opposite direction, Fig. 3 shows an exploded view of the air supply valve according to Fig. 1 and 2, which indicates how the various included parts are fitted in relation to each other, and
Fig. 4 shows a schematic exploded view in perspective seen from the opposite direction than what is the case in Fig. 3 with the various parts dismantled and then especially, the thermostat unit.'
As evident by the drawings, the preferred embodiment example consists of an air supply valve 1 according to the present invention, and a shutter housing 2 with a shutter blade 3 that can be turned fitted inside the housing. The valve 1 is according to the preferred example designed so that the shutter blade 3 is biased with a torsion spring, not shown on the drawing, in its closed, first position shown in Fig. 1 and 2.
From this first, completely closed position, the shutter blade 3 can be turned through a predetermined angle to an open position, using a thermostat unit 4 fitted to the shutter blade 3. From the open position, to which the shutter blade 3 has been turned by means of the thermostat unit 4, if desired, the shutter blade 3 can then be closed manually by turning it further through a predetermined angle to a second fully closed position. The manual control of the shutter blade 3 is achieved via a lever 19 with at least one gear 6 ; 7 acting on a gear rack 5, which in turn actuates turning of the shutter blade 3. The gear rack 5, in the shown example, consists of a plate 8 with rectangularly formed slots 9 for engagement with said gears 6 , 1 . Due to this design of gear rack 5, it becomes self- cleaning from grease, debris and similar. For positioning of the thermostat unit 4, the shutter blade "3 has a centrally located recess 10, in which the position of the thermostat unit 4 can be secured with a simple hand movement. The output torsion shaft 11 of the thermostat unit 4 moves in relation to the influence of an outdoor temperature sensor 12, and the torsion shaft 11 in turn actuates the adjustment of the shutter blade 3. The ' thermostat unit 4 consists of, in addition to the sensor 12, a guide sleeve 16 with a covering torsion spring 17 and a turning device 13, which shows two opposing, diagonally cut steps 14, 15, which transfer the linear movements of the sensor 12 to a turning motion, and the parts are held together by a clamp element 20. The turning motion is thus transferred from the turning device 13 to the underlying shutter housing 2 for turning of the shutter blade 3.
The gear wheel 6 located under the thermostat unit 4 shows a number of sequentially arranged gear teeth 18 only mainly along half its periphery corresponding to the turning of the shutter blade, which is manual.
The air supply valve according to the invention 1 functions as follows. In cases where the shutter blade 3 has been fitted with a thermostat unit 4, there is an automatic adjustment the first 70-90° according to the outdoor temperature during the first opening phase of the shutter blade 3 from closed to open position. After this, the shutter blade 3 can be closed manually by turning through another predetermined angle to approximately 140-180°. In case a thermostat unit 4 has not yet been fitted to the shutter blade 3, opening and closing of the valve 1 is performed only manually, and then in a range which covers the shutter blade 3 second opening phase, from open to closed, and back.

Claims

Claims
1. Improvements in and relating to an air supply valve comprising a shutter housing (2) including an adjustable shutter blade (3) fitted inside which from a first completely closed position is turnable through a predetermined angle to an open position, characterized' in that the shutter blade (3) on one hand is manually turnable from said open position further through another predetermined angle to a second completely closed position and on the other is automatically adjustable according to the outdoor temperature during turning of the shutter blade (3) from said first closed position to said open position using a thermostat unit (4) fitted to the shutter blade (3) , which comprises a sensor (12) , the linear movement of which acts on two diagonally cut steps (14, 15) on a turning device (13) located in the thermostat unit (4), and in turn, said turning device transfers its turning movement to the shutter blade (3) via the shutter housing (2) and an output torsion shaft (11) of the thermostate unit (4) , during its automatic adjustment.
2. Air supply valve according to claim 1, characterized in the shutter blade (3) being biased by spring force in the direction towards its closed position.
3. Air supply valve according to claim 1, characterized in that the shutter blade (3) manual control being achieved through at least one gear wheel (6; 7) acting on a gear rack (5) which in turn actuates the turning of the shutter blade (3) .
4. Air supply valve according to claim 3, characterized in that the gear rack (5) consists of a plate (8) having rectangular slots (9) for engagement with the proximal gear wheel (7) , through which the gear rack is self-cleaning.
5. Air supply valve according to claim 1, characterized in that the shutter blade (3) having a centrally located recess (10) for co-operation wit'h said complementary thermostat unit (4) .
6. Air supply valve according to claim 1, characterized in that in cases where the shutter blade (3) has been fitted with a thermostat unit (4) , there is automatic adjustment the first 70-90┬░ according to the outdoor temperature during the shutter blade (3) first opening phase from closed to open position, after which closing of the shutter blade (3) is performed manually by turning through another predetermined angle to 140-180┬░.
7. Air supply valve according to any of the preceding claims, characterized in that there is a gear wheel (6) beneath the thermostate unit (4) comprising gear teeth (18) sequentially arranged only mainly along half its periphery, which is the circumference corresponding to the distance of the movement of the shutter blade (3) which is controlled manually.
EP99933326A 1998-07-02 1999-06-08 Improvements in and relating to an air supply valve Withdrawn EP1110037A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9802372 1998-07-02
SE9802372A SE9802372L (en) 1998-07-02 1998-07-02 Rotatable supply air damper
PCT/SE1999/000990 WO2000001991A1 (en) 1998-07-02 1999-06-08 Improvements in and relating to an air supply valve

Publications (1)

Publication Number Publication Date
EP1110037A1 true EP1110037A1 (en) 2001-06-27

Family

ID=20411936

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99933326A Withdrawn EP1110037A1 (en) 1998-07-02 1999-06-08 Improvements in and relating to an air supply valve

Country Status (5)

Country Link
EP (1) EP1110037A1 (en)
JP (1) JP2002519621A (en)
AU (1) AU4939499A (en)
SE (1) SE9802372L (en)
WO (1) WO2000001991A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2349970A1 (en) * 2001-05-31 2002-11-30 Martin Gagnon Ventilation method and device
BE1018155A5 (en) * 2008-05-21 2010-06-01 Renson Ventilation Nv Central ventilation system for use in e.g. kitchen, has measurement system to control movement of flow regulator, which is controlled by central electronic circuit board, where measurement system is established in vicinity of flow regulator
SE534880C2 (en) * 2009-03-27 2012-01-31 Inventiair Ab airflow regulator
NL2009975C2 (en) * 2012-12-12 2014-06-16 Vero Duco Nv VENTILATION SYSTEM WITH FLOW CONTROL CASE.
US10203703B2 (en) 2014-03-04 2019-02-12 Mi Valve, Llc Airflow balancing valve for HVAC systems
US11892098B2 (en) 2021-02-18 2024-02-06 Greenheck Fan Corporation Airflow balancing valve with actuator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB955502A (en) * 1962-01-04 1964-04-15 Manmil Plastics Ltd Damper arrangements for ducting
US4390123A (en) * 1980-12-01 1983-06-28 Mccabe Francis J Thermally activated, automatic, single blade damper and damper operator
US4460121A (en) * 1982-09-13 1984-07-17 Interpace Corporation Thermally controlled vent damper
KR100230108B1 (en) * 1991-12-30 1999-11-15 구자홍 Ars message reproducing method
US5533929A (en) * 1993-12-29 1996-07-09 Attridge, Jr.; Russell G. Remotely trippable and resettable damper

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0001991A1 *

Also Published As

Publication number Publication date
WO2000001991A1 (en) 2000-01-13
SE511559C2 (en) 1999-10-18
SE9802372D0 (en) 1998-07-02
AU4939499A (en) 2000-01-24
JP2002519621A (en) 2002-07-02
SE9802372L (en) 1999-10-18

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