GB2422207A - A control device suitable for a heating, ventilation and air-conditioning (HVAC) system. - Google Patents

A control device suitable for a heating, ventilation and air-conditioning (HVAC) system. Download PDF

Info

Publication number
GB2422207A
GB2422207A GB0500822A GB0500822A GB2422207A GB 2422207 A GB2422207 A GB 2422207A GB 0500822 A GB0500822 A GB 0500822A GB 0500822 A GB0500822 A GB 0500822A GB 2422207 A GB2422207 A GB 2422207A
Authority
GB
United Kingdom
Prior art keywords
means
parameter
control device
reset
value
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.)
Granted
Application number
GB0500822A
Other versions
GB2422207B (en
GB0500822D0 (en
Inventor
Brian John Cottrell
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.)
Schneider Electric Controls UK Ltd
Original Assignee
Schneider Electric Controls UK 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 Schneider Electric Controls UK Ltd filed Critical Schneider Electric Controls UK Ltd
Priority to GB0500822A priority Critical patent/GB2422207B/en
Publication of GB0500822D0 publication Critical patent/GB0500822D0/en
Publication of GB2422207A publication Critical patent/GB2422207A/en
Application granted granted Critical
Publication of GB2422207B publication Critical patent/GB2422207B/en
Application status is Expired - Fee Related legal-status Critical
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/001
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00Control of temperature
    • G05D23/19Control of temperature characterised by the use of electric means
    • G05D23/1919Control of temperature characterised by the use of electric means characterised by the type of controller
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature

Abstract

A control device 1 to control a parameter to a desired value, suitable for use in a heating, ventilation and air-conditioning (HVAC) system, comprises reset means and means to set the parameter to a value different from the reset value. The reset means may include a knob 3 which may be pushed or pressed into a main body 2. The means to set the parameter to a value different from the reset value may also include the knob 3, which may be able to be moved in directions perpendicular to the reset direction or to be rotated. The knob 3 may also be able to be continuously rotated, and may deliver tactile or audible alarms when a limit value has been reached. The control device may be used to set an ambient temperature controlled by a temperature controlling thermostat in a domestic HVAC system.

Description

IMPROVED CONTROL DEVICE AND METHOD

OF SETTING A CONTROL DEVICE

The present invention relates to an improved control device and method of setting a control device for controlling the operation of an apparatus, and in particular but not exclusively to a control device for the control of domestic heating, ventilation and air conditioning (HVAC) equipment.

Conventional analogue room thermostats for controlling the ambient temperature of living space in domestic central heating systems comprise typically a rotatable knob or linear actuator which are operatively linked to a potentiometer. The method of setting the desired ambient temperature involves rotating the knob or moving the linear actuator against a fixed scale, the absolute position of the knob or actuator dictating the set point of the thermostat.

However, whilst such conventional room thermostats may be easily operated by sighted people, blind or severely visually impaired people find extreme difficulty in operating the thermostatic controller in order to obtain the desired ambient temperature.

Whilst the difficulty in using the conventional room thermostatic controller for blind or severely visually impaired people may be partially mitigated by the provision of, for example, raised or indented scale markings in the form of braille or perhaps an audible indication of the actuator position, the provision of such extra facilities adds to the expense and complexity of manufacture of the room thermostat controller.

It is therefore an object of the present invention to provide a control device of a relatively simple construction which is equally easily operable by both sighted and blind or severely visually impaired people.

In accordance with a first aspect the invention provides a method of setting a parameter controlling device at a desired parameter value comprising carrying out a first action on a component of the device to reset the device to a predetermined value of the parameter and subsequently carrying out a second action on a component of the device to alter the predetermined value of the parameter to a desired value.

The first and second actions may be carried out on the same component of the device.

The method according to the invention may be applied to the sefting of an ambient temperature controlled by a temperature controlling thermostat.

In accordance with the second aspect of the invention there is provided a parameter controlling device comprising means operable in a first action to reset the parameter value to a predetermined value and means operable in a second action to alter the reset parameter value to a desired parameter value.

The means operable to reset the device and the means operable to alter the reset parameter value may be the same means, The parameter controlling device may be a thermostatic controller for a domestic HVAC system.

The aforementioned first and second actions may comprise respectively axial and rotational movements or axial and linear movements.

The first and second actions may occur in planes substantially perpendicular to each other.

The control device may comprise a mechanical interlock operable by the reset means to reset the temperature altering potentiometer to mid datum position.

In an alternative the controller may comprise other switch means linked to microprocessor control which counts increments of movement and alters the demanded temperature accordingly.

The controller may comprise a circular knob continuously notable in both clockwise and anti-clockwise directions and operating switching means.

The switching means may be linked to a microprocessor which detects the direction of movement, increments or decrements the temperature accordingly. The microprocessor may also determine the maximum and minimum temperature available and give an audible or tactile warning when a temperature limit has been reached.

Further aspects of the present invention will become apparent from the following description, by way of example only, of an embodiment of the invention in conjunction with the following drawings in which: - Figure 1 shows a schematic front view of a parameter controlling device in accordance with the present invention; and Figure 2 shows a side elevation of the parameter controlling device of Figure 1; and Figure 3 shows a schematic front elevation of another parameter controlling device in accordance with the invention; and Figure 4 shows a side elevation of the parameter controlling device of Figure 3.

Shown in Figures 1 and 2 is an analogue room thermostat (1) comprising a wall mountable rectangular box shaped main body (2), a continuously rotatable circular dial or knob (3) protruding frontwardly outwardly of the main body (2) and a window (4) for displaying a set temperature of the thermostat. The display of the set temperature may be digitally or by other means.

The independently rotatable knob (3) is operatively linked to a potentiometer (not shown).

In the method of operating the temperature controlling thermostat (1) in a first action the outwardly protruding knob (3) is pushed in an inward direction indicated by the arrow label R in Figure 2 in order to reset the thermostat to a predetermined temperature of, for example 20 degrees centigrade. Having pushed the outwardly protruding knob inwards the knob is returned to its outwardly protruding position by return spring means (not shown).

Thus having reset the temperature controlling thermostat to a predetermined reset temperature in a first action, in a subsequent second action the predetermined reset temperature is altered by turning the outwardly protruding knob (3) relative to the main body (2). The temperature controlling thermostat (1) is provided with ratchet, or similar means, to provide audible and I or tactile indication of equiangular movements of the knob each altering the predetermined reset temperature by a pre-specified equal number of degrees or fractions of degrees of temperature.

In this first embodiment the rotatable knob (3) is operatively connected to its potentiometer such that turning the knob anti clockwise in the direction of arrow D in Figure 1 serves to decrement the predetermined reset temperature whilst movement in the clockwise direction in the direction of arrow I serves to increment the predetermined reset temperature. The pre- specified number of degrees of increment or decrement for each equiangular turn may be for example 0.5 degree or 1 degree centigrade.

A blind or severely visually impaired person is thus able to operate the room thermostat (1) by firstly pushing the outwardly protruding knob inwardly to reset the thermostat to a predetermined reset temperature and subsequently by turning the knob either clockwise or anti clockwise and counting the number of indicated equiangular movements of the knob increase or decrease the reset temperature to the desired temperature.

The temperature controlling thermostat (1) may also provided with a window (4) displaying by mechanical or electronic LCD means the set temperature for the benefit of a normally sighted operator.

A non-impaired user may, as an alternative to pressing the knob to re- set to the datum, merely rotate the knob to increase or decrease the desired temperature, using either tactile feedback or information from a scale on the body, or, if provided, a display in the window (4).

In another embodiment of the present invention shown in Figures 3 and 4 the rotatable protruding knob (3) of the first embodiment is replaced by a protruding slider (5) which can be similarly pressed inwardly to effect the reset of the thermostat and centralise the slider and then subsequently be moved left or right by a number of equi-linear movements, again controlled by a ratchet or similar means, which are audible and I or vibrationally detectable and in which each equi-linear movement alters the temperature by a predetermined amount. Movement of the slider to the left may effect a decrement of the reset temperature whereas movement to the right may effect an increment to the reset temperature.

Claims (12)

  1. A parameter control device for controlling a paramenter to a desired value comprising reset means operable in a first action to reset the parameter control device to a predetermined reset value and means operable in a second action to set a parameter value having a desired difference relative to said reset value.
  2. 2. A parameter control device in accordance with claim 1, wherein the means for resetting the control device to a predetermined reset parameter value and the means for altering the pre-set parameter value to the desired parameter value are the same means.
  3. 3. A parameter control device in accordance with either of claims 1 or 2, wherein the manner in which the reset means is operable is by pushing or pressing the means in a direction inwardly of the control device.
  4. 4. A parameter control device in accordance with any of claims I to 3, wherein the manner of operating the means to alter the reset parameter value comprises moving the means in a direction or directions perpendicular to the manner of operating the reset means.
  5. 5. A parameter control device in accordance with any of claims I to 4, wherein the control device comprises a main body and the reset means comprises a cylindrical knob extending outwardly of the main body and being moveable inwardly in relation to the main body.
  6. 6. A parameter control device in accordance with any of claims 1 to 5, wherein the control device comprises a main body and a right circular cylindrical knob extending outwardly of the main body and rotationally moveable in both clockwise and anti clockwise directions with respect to said main body.
  7. 7. A parameter control device in according to claim 6, wherein the cylindrical knob is continuously rotatable and operates switching means linked to a microprocessor which detects the direction of rotation and alters the parameter value accordingly, and determines the maximum and minimum parameter values available and delivers an audible I tactile alarm when the limit value has been reached.
  8. 8. A parameter control device with any of the preceding claims, wherein the control device is a thermostat for setting and controlling the ambient temperature of a domestic HVAC system.
  9. 9. A parameter control device as herein described and depicted in Figures lto4.
  10. 10. A method of setting a parameter controlling device at a desired parameter value comprising operating reset means in a first action to reset the parameter controlling device to predetermined parameter value and subsequently operating parameter value altering means in a second manner to alter the reset parameter value to a desired parameter value.
  11. 11. A method according to claim 10, wherein the reset means and the parameter value altering means are the same means.
  12. 12. A method of setting a parameter controlling device in accordance with either of claims 10 or 11, wherein operating the reset means in a first manner comprises moving the reset means in a first direction and wherein operating the parameter value altering means comprises moving the means in a second direction in a plane substantially perpendicular to said first direction.
GB0500822A 2005-01-15 2005-01-15 Improved control device and method of setting a control device Expired - Fee Related GB2422207B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0500822A GB2422207B (en) 2005-01-15 2005-01-15 Improved control device and method of setting a control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0500822A GB2422207B (en) 2005-01-15 2005-01-15 Improved control device and method of setting a control device

Publications (3)

Publication Number Publication Date
GB0500822D0 GB0500822D0 (en) 2005-02-23
GB2422207A true GB2422207A (en) 2006-07-19
GB2422207B GB2422207B (en) 2009-07-22

Family

ID=34224638

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0500822A Expired - Fee Related GB2422207B (en) 2005-01-15 2005-01-15 Improved control device and method of setting a control device

Country Status (1)

Country Link
GB (1) GB2422207B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1107644A (en) * 1964-06-04 1968-03-27 Plessey Uk Ltd Improvements relating to electric switches
US4655279A (en) * 1981-02-20 1987-04-07 Harmon Jr Kermit S Temperature control system with programmed dead-band ramp and drift features
US6814299B1 (en) * 2003-02-18 2004-11-09 Emerson Electric Co. Thermostat with one button programming feature
US20040262410A1 (en) * 2003-04-11 2004-12-30 Hull Gerry G. Graphical thermostat and sensor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2408311B (en) * 2003-11-20 2006-05-10 Invensys Controls Uk Ltd Thermostatic control device and method of setting

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1107644A (en) * 1964-06-04 1968-03-27 Plessey Uk Ltd Improvements relating to electric switches
US4655279A (en) * 1981-02-20 1987-04-07 Harmon Jr Kermit S Temperature control system with programmed dead-band ramp and drift features
US6814299B1 (en) * 2003-02-18 2004-11-09 Emerson Electric Co. Thermostat with one button programming feature
US20040262410A1 (en) * 2003-04-11 2004-12-30 Hull Gerry G. Graphical thermostat and sensor

Also Published As

Publication number Publication date
GB0500822D0 (en) 2005-02-23
GB2422207B (en) 2009-07-22

Similar Documents

Publication Publication Date Title
EP0609363B1 (en) Actuator having electronically controllable tactile responsiveness
JP5144621B2 (en) Haptic transmission
US7589717B2 (en) Systems and methods for user interfaces designed for rotary input devices
CA2923241C (en) Method of operating hvac systems
CA1301287C (en) Electronic programmable thermostat
US4759386A (en) Electromechanical linear actuator
US6480752B1 (en) Final operating element positioning device
JP3850619B2 (en) In-vehicle input device
US20020072814A1 (en) Interface device with tactile responsiveness
EP1816545A2 (en) System and method for low power haptic feedback
JP3083070U (en) Knob control device
US20090266904A1 (en) Hvac system with energy saving modes set using a security system control panel
US5381080A (en) Control device
US8174512B2 (en) Hybrid haptic device utilizing mechanical and programmable haptic effects
US6972665B2 (en) Haptic reconfigurable dashboard system
US7740184B2 (en) Methods of dehumidification control in unoccupied spaces
JP5037480B2 (en) Operating wheel and handle system with tactile feedback
US8170757B2 (en) Selection device for shifting a vehicle transmission
DE60106840T2 (en) Air guiding device in a channel with integrated shape memory actuating unit, in particular for motor vehicle air conditioning systems
US5956016A (en) Operating device for menu-controlled functions of a vehicle
US20040032395A1 (en) Haptic feedback effects for control knobs and other interface devices
US5348078A (en) Dwelling heating and air conditioning system
US7302642B2 (en) Thermostat with touch-screen display
EP1884857B1 (en) Rotary knob with a display
AU746425B2 (en) Remote controller for air conditioner

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20110115