EP3411631A1 - Cooker hood and power supply arrangement thereof - Google Patents

Cooker hood and power supply arrangement thereof

Info

Publication number
EP3411631A1
EP3411631A1 EP17704319.7A EP17704319A EP3411631A1 EP 3411631 A1 EP3411631 A1 EP 3411631A1 EP 17704319 A EP17704319 A EP 17704319A EP 3411631 A1 EP3411631 A1 EP 3411631A1
Authority
EP
European Patent Office
Prior art keywords
cooker hood
motor
control unit
power supply
supply terminal
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
EP17704319.7A
Other languages
German (de)
French (fr)
Other versions
EP3411631B1 (en
EP3411631B2 (en
Inventor
Marcel HOEFSMIT
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.)
Intell Properties BV
Original Assignee
Intell Properties BV
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
Family has litigation
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Application filed by Intell Properties BV filed Critical Intell Properties BV
Priority to PL17704319.7T priority Critical patent/PL3411631T5/en
Publication of EP3411631A1 publication Critical patent/EP3411631A1/en
Publication of EP3411631B1 publication Critical patent/EP3411631B1/en
Application granted granted Critical
Publication of EP3411631B2 publication Critical patent/EP3411631B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F24C15/2064—Removing cooking fumes illumination for cooking hood
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F24C15/2021—Arrangement or mounting of control or safety systems

Definitions

  • Cooker hood and power supply arrangement thereof are Cooker hood and power supply arrangement thereof.
  • the present invention relates to a cooker hood or a kitchen extraction exhaust unit and a power supply arrangement thereof.
  • the ventilation unit for installation in a ventilation system.
  • the ventilation unit can include a motor coupled to a fan element and a power source.
  • the ventilation unit can also include a calibration module having one of a voltage and current regulator for adjusting the performance of the ventilation unit based on at least one characteristic of the ventilation system.
  • An AC mains supply is converted in a DC voltage and supplied to a DC motor via a controller.
  • WO2006/092219 discloses a ventilation appliance embodied as an exhauster hood.
  • a drive is present for generating an air flow, as well as an illumination device.
  • a control unit controls the drive and the illumination device using galvanic separated pulse width modulated signals.
  • a vapor cleaning apparatus for a range hood which generates high temperature vapor to melt dirty grease on both an exhaust fan and a fan housing.
  • the apparatus has a control module which is electrically connected to a vapor cleaning module, an input module and a fan driver module. Also provided is a lighting unit power supply for powering lighting elements.
  • the control module executes the vapor cleaning mode, the heater heats the water into vapor and activates the fan driver module to drive a fan motor to blow the vapor to the fan housing.
  • the present invention seeks to provide an improved cooker hood or kitchen extraction exhaust unit, in particular a power supply arrangement thereof, wherein the cooker hood comprises less electronic components and exhibits reduced electrical circuit complexity.
  • a cooker hood according to the type defined in the preamble above is provided, wherein the cooker hood comprises a mains supply, one or more lighting elements, and a lighting element driver connected to the mains supply and the one or more lighting elements, and an electronically commuted motor driving a fan, characterized in that a power supply terminal of the EC motor is directly connected to the mains supply and a control terminal of the EC motor is connected to a control unit, wherein the control unit is connected to a power supply output of the lighting element driver.
  • the cooker hood of the present invention exhibits reduced circuit complexity as the lightning element driver powers the control unit allowing the EC motor to be controlled and operated by the control unit, such as changing motor speed and hence fan speed of the cooker hood. Consequently, the cooker hood of the present invention does not require centralized power and control signal distribution in the form of a printed circuit board (PCB), sometimes referred to as a "power board". More specifically, in addition to the one or more lighting elements, the present invention allows the lighting element driver to be used for powering the control unit for controlling the EC motor, so that electrical circuit complexity of the cooker hood is significantly reduced as no separate feed is needed to power the control unit. In a practical embodiment the power supply output of the lighting element driver is an auxiliary power supply output for powering the control unit.
  • PCB printed circuit board
  • control unit is integrated with a user interface of the cooker hood, which further simplifies circuit complexity of the cooker hood. Electric power for the control unit and user interface need not be directly accessed from the mains supply terminal but can be extracted from the lighting element driver, where the control unit for operating the EC motor is readily operated through the user interface on the cooker hood.
  • the one or more lighting elements are LED lighting elements
  • the lighting element driver is a LED power supply or LED driver.
  • the LED power supply may be a dimmable LED power supply.
  • control unit is connected to the lighting element driver to control operating parameters of the lighting elements, so that a combined control of both the lighting and the EC motor is possible, circumventing the use of a further control unit for merely controlling the one or more lightning elements.
  • Figure 1 shows an embodiment of a prior art power supply arrangement for a cooker hood
  • Figure 2 shows an embodiment of a power supply arrangement utilizing a mains filter and standby relay for a cooker hood according to the present invention
  • Figure 3 shows an alternative embodiment of a power supply arrangement for a cooker hood according to the present invention.
  • Figure 4 shows a schematic embodiment of a cooker hood and a power supply arrangement thereof according to the present invention.
  • Prior art cooker hoods or kitchen extraction exhaust units typically comprise an electric motor for driving a (suction) fan.
  • the cooker hood may be operated by a user through e.g. a touch and/or mechanical interface on the cooker hood to operate one or more light elements and/or the fan.
  • a centralized power and control signal distribution unit is provided, sometimes called a "power board” in the form of a main printed circuit board (PCB).
  • FIG. 1 shows an embodiment of a prior art power supply arrangement for a cooker hood.
  • a cooker hood typically comprises a power supply arrangement having an AC power supply terminal 26 connected to a power board (PWRB) 20 or main printed circuit board.
  • the power board 20 is connected to a user interface (U/l) 24, a lighting element driver (LED DR) 22, and an electric motor (MTR) 21 .
  • the lighting element driver 22 is connected to one or more lighting elements such as one or more LED lamps 23.
  • a main filter (MF) 25 is provided in the AC line from AC power supply terminal 26 to the power board 20.
  • the power board 20 is a central component of the power supply arrangement for a cooker hood from which power and control signals are distributed. Apart from the electric motor 21 , the power board 20 is the most complex and expensive component of a cooker hood, and the power board 20 is also a relatively vulnerable component that is relatively expensive to repair. Furthermore, because the power board 20 distributes all power and control signals of the cooker hood, in case of a significant failure the entire cooker hood may become non-functional, e.g. both lighting elements and the electric motor may cease to be operational.
  • Figure 2 and 3 each show an embodiment of a power supply arrangement for a cooker hood according to the present invention.
  • the cooker hood comprises a mains supply terminal 6, or mains supply 6 for short, one or more lighting elements 3, and a lighting element driver (PWR) 4 connected to the mains supply terminal 6 and the one or more lighting elements 3.
  • the cooker hood further comprises an electrical motor 2, in particular a brushless DC motor (or electronically commutated (EC) motor) 2 for driving a fan or having an integrated fan (not shown).
  • EC electronically commutated
  • a power supply terminal of the EC motor 2 is directly connected to the mains supply terminal 6, and a control terminal of the EC motor 2 is connected to a control unit (CTRL/UI) 5, wherein the control unit 5 is connected to a power supply output of the lighting element driver 4.
  • CTRL/UI control unit
  • the cooker hood of the present invention efficiently and cleverly utilizes the lighting element driver 4 to power the control unit 5, which in turn is capable of supplying and/or receiving signals to/from the EC motor 2 for controlling operation thereof, e.g. changing speed.
  • the use of a power board 20 as depicted in Figure 1 is circumvented as the lighting element driver 4 already provides power to the one or more lighting elements 3 and so there is no need to feed the control unit 5 separately from the mains supply terminal 6.
  • the power supply output of the lighting element driver 4 is an auxiliary power supply output (e.g. 12 Volt) for powering the control unit 5.
  • control unit 5 is integrated with a user interface of the cooker hood, so that the control unit 5 may be conveniently operated through the user interface, wherein the user interface presents to the user control buttons on how to operate the EC motor 2, e.g. changing speed of the fan.
  • the user interface may be arranged at an accessible location at a front portion of the cooker hood, typically at a side portion or bottom portion at the front of the cooker hood.
  • the one or more lighting elements 3 are LED lighting elements
  • the lighting element driver 4 is a LED power supply, thereby reducing power consumption of the cooker hood.
  • the control unit 5 can be connected to and cooperate with any lighting element driver 4 required for a particular application.
  • control unit 5 is connected to the lighting element driver 4 to control operating parameters of the one or more lighting elements (3), as indicated by the dashed line in the Figure 2 and 3 embodiments.
  • the one or more lighting elements 3 can also be operated by the control unit 5. This further reduces electrical circuit complexities and redundancies and eliminates the need for a power board 20 as outlined earlier.
  • the cooker hood may further comprise a standby relay 8 connected between the supply terminal of the EC motor 2 and the mains supply terminal 6, wherein a control input of the standby relay 8 is connected to the control unit 5.
  • the control unit 5 provides additional control over power delivered to the EC motor 2 and may be arranged for e.g. temporarily connecting and disconnecting the EC motor 2 from the mains supply terminal 6.
  • the standby relay 8 may reduce standby and various parasitic losses within the EC motor 2 when in idle mode.
  • the control unit 5 may therefore be arranged (dashed line) for controlling the standby relay 8 to further reduce electrical circuit complexity of the cooker hood and circumvent the need for a power board 20.
  • the cooker hood comprises a mains filter 7 connected between the mains supply terminal 6 and the EC motor 2 and/or the lighting element driver 4.
  • the mains filter 7 reduces e.g. noise and various EMI disturbances coming from the power grid into the electrical circuit of the cooker hood and also reduces noise and various EMI disturbances being injected into the power grid coming from the cooker hood.
  • control unit 5 allows the EC motor 2 to be controlled, e.g. allowing speed control of the fan.
  • the type of control used for the EC motor 2 can be chosen to meet particular requirements and is not limited by the power delivered to the control unit 5 by the lighting element driver 4.
  • the control unit 5 is arranged to control an operating speed of the EC motor 2 (dashed line) using an analogue control signal or a pulse width modulated signal, so that it possible to manufacture cooker hoods for different applications, price and quality ranges etc.
  • FIG. 4 shows a schematic embodiment of a cooker hood and a power supply arrangement thereof according to the present invention.
  • the cooker hood 1 comprises a front portion or housing area 1 a that comprises the control unit 5, which may be incorporated with a user interface.
  • the cooker hood 1 further comprises an internal space 1 b housing the EC motor 2 for driving a fan and the one or more lighting elements 3, such as LED, halogen lamps and the like.
  • a top area 1 c is provided to the cooker hood which comprises the mains supply terminal 6 and the lighting element driver 4, i.e. in general the electronic circuitry of the cooker hood 1 .
  • the power supply terminal of the EC motor 2 is directly connected to the mains supply terminal 6.
  • a first connector block 1 1 may be provided for connecting the EC motor 2, as wells as the lighting element driver 4, to the mains supply terminal 6.
  • a second connector block 12 is provided to connect the control terminal of the EC motor 2 to the control unit 5, wherein the control unit 5 is connected to the power supply output of the lighting element driver 4 through the second connector block 12.
  • the power supply output of the lighting element driver 4 may be an auxiliary power supply output (e.g. 12 Volt) connected to the second connector block 12.
  • the second connector bock 12 may be connected to a standby relay 8 for control thereof and a mains filter 7 may be provided connected to the first connector block 1 1 .
  • FIG 4 it is shown that various cable types may be utilized for connecting the components of the power supply arrangement for the cooker hood 1 .
  • a 3-wire cable type 3p is provided to connect the EC motor 2 to the mains supply terminal 6
  • a 2-wire cable type 2p is utilized for connecting the lighting element driver 4 to the mains supply terminal 6.
  • the control unit 5/user interface is connected to the lighting element driver 4 and the EC motor 2 through a 6-wire cable 6p connected to the second connector block 12, which is connected to the lighting element driver 4 with a 4-wire cable type 4p.
  • the EC motor 2 is connected to the second connector block 12 with a 2-wire cable type 2p.
  • Figure 4 depicts a specific embodiment of the cooker hood 1 , and in particular a power supply arrangement thereof
  • the present invention is clearly embodied by Figure 4 as no centralized power board or PCB is used to separately feed the control unit 5 from the mains supply terminal 6. That is, according to the present invention the control unit 5 is powered by the lighting element driver 4 and there is no need to separately transform electrical power supplied at the mains supply terminal 6, e.g. using a separate inverter, for powering the control unit 5.
  • the lighting element driver 4 already provides a suitable voltage and sufficient power for powering the control unit 5 in addition to the one or more lighting elements 3.
  • the present invention further relates to a power supply arrangement for a cooker hood or kitchen extraction exhaust unit, wherein the power supply arrangement comprises a mains supply terminal 6, one or more lighting elements 3, a lighting element driver 4 connected to the mains supply terminal 6 and the one or more lighting elements 3.
  • an electronically commuted (EC) motor 2 driving a fan wherein a power supply terminal of the EC motor 2 is directly connected to the mains supply terminal 6 and a control terminal of the EC motor 2 is connected to a control unit 5, wherein the control unit 5 is connected to a power supply output of the lighting element driver 4.
  • EC electronically commuted
  • the arrangement circumvents the use of a power board or PCB for distributing power and/or control signals to/from a control unit 5, an EC motor 2 and a lighting element driver 4.
  • the lighting element driver 4 can be utilized to provide power to the control unit 5, which is then able to communicate with the EC motor 2 and/or the one or more lighting elements 3 for control thereof. Electrical connections for power and control signal distribution is then realized with standard electrical cable types.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Ventilation (AREA)

Abstract

Cooker hood comprising a mains supply terminal (6), one or more lighting elements (3), a lighting element driver (4) connected to the mains supply terminal (6) and the one or more lighting elements (3), and an electronically commuted (EC) motor (2) driving a fan. A power supply terminal of the EC motor (2) is directly connected to the mains supply terminal (6) and a control terminal of the EC motor (2) is connected to a control unit (5). The control unit (5) is connected to a power supply output of the lighting element driver (4).

Description

Cooker hood and power supply arrangement thereof.
Field of the invention
The present invention relates to a cooker hood or a kitchen extraction exhaust unit and a power supply arrangement thereof.
Prior art
American patent publication US2012/0052792 discloses a ventilation unit for installation in a ventilation system. The ventilation unit can include a motor coupled to a fan element and a power source. The ventilation unit can also include a calibration module having one of a voltage and current regulator for adjusting the performance of the ventilation unit based on at least one characteristic of the ventilation system. An AC mains supply is converted in a DC voltage and supplied to a DC motor via a controller.
International patent publication WO2006/092219 discloses a ventilation appliance embodied as an exhauster hood. A drive is present for generating an air flow, as well as an illumination device. A control unit controls the drive and the illumination device using galvanic separated pulse width modulated signals.
American patent publication US2014/076367 discloses a vapor cleaning apparatus for a range hood which generates high temperature vapor to melt dirty grease on both an exhaust fan and a fan housing. The apparatus has a control module which is electrically connected to a vapor cleaning module, an input module and a fan driver module. Also provided is a lighting unit power supply for powering lighting elements. When the control module executes the vapor cleaning mode, the heater heats the water into vapor and activates the fan driver module to drive a fan motor to blow the vapor to the fan housing.
Summary of the invention
The present invention seeks to provide an improved cooker hood or kitchen extraction exhaust unit, in particular a power supply arrangement thereof, wherein the cooker hood comprises less electronic components and exhibits reduced electrical circuit complexity.
According to the present invention a cooker hood according to the type defined in the preamble above is provided, wherein the cooker hood comprises a mains supply, one or more lighting elements, and a lighting element driver connected to the mains supply and the one or more lighting elements, and an electronically commuted motor driving a fan, characterized in that a power supply terminal of the EC motor is directly connected to the mains supply and a control terminal of the EC motor is connected to a control unit, wherein the control unit is connected to a power supply output of the lighting element driver.
The cooker hood of the present invention exhibits reduced circuit complexity as the lightning element driver powers the control unit allowing the EC motor to be controlled and operated by the control unit, such as changing motor speed and hence fan speed of the cooker hood. Consequently, the cooker hood of the present invention does not require centralized power and control signal distribution in the form of a printed circuit board (PCB), sometimes referred to as a "power board". More specifically, in addition to the one or more lighting elements, the present invention allows the lighting element driver to be used for powering the control unit for controlling the EC motor, so that electrical circuit complexity of the cooker hood is significantly reduced as no separate feed is needed to power the control unit. In a practical embodiment the power supply output of the lighting element driver is an auxiliary power supply output for powering the control unit.
In an advantageous embodiment, the control unit is integrated with a user interface of the cooker hood, which further simplifies circuit complexity of the cooker hood. Electric power for the control unit and user interface need not be directly accessed from the mains supply terminal but can be extracted from the lighting element driver, where the control unit for operating the EC motor is readily operated through the user interface on the cooker hood.
To reduce power consumption of the cooker hood and to provide good lighting conditions under and around the cooker hood, an embodiment is provided wherein the one or more lighting elements are LED lighting elements, and the lighting element driver is a LED power supply or LED driver. In an advantageous embodiment the LED power supply may be a dimmable LED power supply.
In a further advantageous embodiment, the control unit is connected to the lighting element driver to control operating parameters of the lighting elements, so that a combined control of both the lighting and the EC motor is possible, circumventing the use of a further control unit for merely controlling the one or more lightning elements.
Short description of drawings
The present invention will be discussed in more detail below, using a number of exemplary embodiments, with reference to the attached drawings, in which
Figure 1 shows an embodiment of a prior art power supply arrangement for a cooker hood;
Figure 2 shows an embodiment of a power supply arrangement utilizing a mains filter and standby relay for a cooker hood according to the present invention;
Figure 3 shows an alternative embodiment of a power supply arrangement for a cooker hood according to the present invention; and
Figure 4 shows a schematic embodiment of a cooker hood and a power supply arrangement thereof according to the present invention.
Detailed description of exemplary embodiments
Prior art cooker hoods or kitchen extraction exhaust units typically comprise an electric motor for driving a (suction) fan. The cooker hood may be operated by a user through e.g. a touch and/or mechanical interface on the cooker hood to operate one or more light elements and/or the fan. To provide power from a mains supply terminal at the cooker hood to the one or more lighting elements and/or the electric motor, and to distribute control signals for operating the cooker hood, a centralized power and control signal distribution unit is provided, sometimes called a "power board" in the form of a main printed circuit board (PCB).
Figure 1 shows an embodiment of a prior art power supply arrangement for a cooker hood. In the prior art embodiment depicted, a cooker hood typically comprises a power supply arrangement having an AC power supply terminal 26 connected to a power board (PWRB) 20 or main printed circuit board. The power board 20 is connected to a user interface (U/l) 24, a lighting element driver (LED DR) 22, and an electric motor (MTR) 21 . The lighting element driver 22 is connected to one or more lighting elements such as one or more LED lamps 23. Furthermore, a main filter (MF) 25 is provided in the AC line from AC power supply terminal 26 to the power board 20.
As can be seen from Figure 1 , the power board 20 is a central component of the power supply arrangement for a cooker hood from which power and control signals are distributed. Apart from the electric motor 21 , the power board 20 is the most complex and expensive component of a cooker hood, and the power board 20 is also a relatively vulnerable component that is relatively expensive to repair. Furthermore, because the power board 20 distributes all power and control signals of the cooker hood, in case of a significant failure the entire cooker hood may become non-functional, e.g. both lighting elements and the electric motor may cease to be operational.
In view of the above drawbacks there is a need for a cooker hood exhibiting reduced engineering complexity and increased reliability, in particular a reduced electronic circuit complexity. Reducing electronic circuit complexity of the cooker hood not only reduces vulnerability to component failure but also reduces manufacturing costs.
Figure 2 and 3 each show an embodiment of a power supply arrangement for a cooker hood according to the present invention. In the embodiments shown, the cooker hood comprises a mains supply terminal 6, or mains supply 6 for short, one or more lighting elements 3, and a lighting element driver (PWR) 4 connected to the mains supply terminal 6 and the one or more lighting elements 3. The cooker hood further comprises an electrical motor 2, in particular a brushless DC motor (or electronically commutated (EC) motor) 2 for driving a fan or having an integrated fan (not shown).
According to the present invention a power supply terminal of the EC motor 2 is directly connected to the mains supply terminal 6, and a control terminal of the EC motor 2 is connected to a control unit (CTRL/UI) 5, wherein the control unit 5 is connected to a power supply output of the lighting element driver 4.
As can be seen the cooker hood of the present invention efficiently and cleverly utilizes the lighting element driver 4 to power the control unit 5, which in turn is capable of supplying and/or receiving signals to/from the EC motor 2 for controlling operation thereof, e.g. changing speed. Most notably, the use of a power board 20 as depicted in Figure 1 is circumvented as the lighting element driver 4 already provides power to the one or more lighting elements 3 and so there is no need to feed the control unit 5 separately from the mains supply terminal 6. In a practical embodiment the power supply output of the lighting element driver 4 is an auxiliary power supply output (e.g. 12 Volt) for powering the control unit 5.
In an advantageous embodiment, the control unit 5 is integrated with a user interface of the cooker hood, so that the control unit 5 may be conveniently operated through the user interface, wherein the user interface presents to the user control buttons on how to operate the EC motor 2, e.g. changing speed of the fan. The user interface may be arranged at an accessible location at a front portion of the cooker hood, typically at a side portion or bottom portion at the front of the cooker hood. In an embodiment the one or more lighting elements 3 are LED lighting elements, and the lighting element driver 4 is a LED power supply, thereby reducing power consumption of the cooker hood. Even though the lighting element driver 4 may be a LED driver, the control unit 5 can be connected to and cooperate with any lighting element driver 4 required for a particular application.
In an advantageous embodiment the control unit 5 is connected to the lighting element driver 4 to control operating parameters of the one or more lighting elements (3), as indicated by the dashed line in the Figure 2 and 3 embodiments. In addition to control the EC motor 2 through the control unit 5, the one or more lighting elements 3 can also be operated by the control unit 5. This further reduces electrical circuit complexities and redundancies and eliminates the need for a power board 20 as outlined earlier.
In the embodiment of Figure 2 it is shown that the EC motor 2 is connected to the mains supply terminal 6 (bold lines). In an embodiment the cooker hood may further comprise a standby relay 8 connected between the supply terminal of the EC motor 2 and the mains supply terminal 6, wherein a control input of the standby relay 8 is connected to the control unit 5. In this embodiment the control unit 5 provides additional control over power delivered to the EC motor 2 and may be arranged for e.g. temporarily connecting and disconnecting the EC motor 2 from the mains supply terminal 6. For example, the standby relay 8 may reduce standby and various parasitic losses within the EC motor 2 when in idle mode. As with control commands from the control unit 5 to the EC motor 2 for e.g. changing speed, the control unit 5 may therefore be arranged (dashed line) for controlling the standby relay 8 to further reduce electrical circuit complexity of the cooker hood and circumvent the need for a power board 20.
In the embodiment shown in Figure 2 the cooker hood comprises a mains filter 7 connected between the mains supply terminal 6 and the EC motor 2 and/or the lighting element driver 4. The mains filter 7 reduces e.g. noise and various EMI disturbances coming from the power grid into the electrical circuit of the cooker hood and also reduces noise and various EMI disturbances being injected into the power grid coming from the cooker hood.
As mentioned above, the control unit 5 allows the EC motor 2 to be controlled, e.g. allowing speed control of the fan. Without loss of generality, the type of control used for the EC motor 2 can be chosen to meet particular requirements and is not limited by the power delivered to the control unit 5 by the lighting element driver 4. For example, in an embodiment the control unit 5 is arranged to control an operating speed of the EC motor 2 (dashed line) using an analogue control signal or a pulse width modulated signal, so that it possible to manufacture cooker hoods for different applications, price and quality ranges etc.
Figure 4 shows a schematic embodiment of a cooker hood and a power supply arrangement thereof according to the present invention. In the schematic embodiment shown, the cooker hood 1 comprises a front portion or housing area 1 a that comprises the control unit 5, which may be incorporated with a user interface. The cooker hood 1 further comprises an internal space 1 b housing the EC motor 2 for driving a fan and the one or more lighting elements 3, such as LED, halogen lamps and the like. A top area 1 c is provided to the cooker hood which comprises the mains supply terminal 6 and the lighting element driver 4, i.e. in general the electronic circuitry of the cooker hood 1 .
According to the present invention, the power supply terminal of the EC motor 2 is directly connected to the mains supply terminal 6. In the specific embodiment shown, a first connector block 1 1 may be provided for connecting the EC motor 2, as wells as the lighting element driver 4, to the mains supply terminal 6. A second connector block 12 is provided to connect the control terminal of the EC motor 2 to the control unit 5, wherein the control unit 5 is connected to the power supply output of the lighting element driver 4 through the second connector block 12. In an embodiment the power supply output of the lighting element driver 4 may be an auxiliary power supply output (e.g. 12 Volt) connected to the second connector block 12. In a further embodiment the second connector bock 12 may be connected to a standby relay 8 for control thereof and a mains filter 7 may be provided connected to the first connector block 1 1 .
In Figure 4 it is shown that various cable types may be utilized for connecting the components of the power supply arrangement for the cooker hood 1 . For example, a 3-wire cable type 3p is provided to connect the EC motor 2 to the mains supply terminal 6, whereas a 2-wire cable type 2p is utilized for connecting the lighting element driver 4 to the mains supply terminal 6. The control unit 5/user interface is connected to the lighting element driver 4 and the EC motor 2 through a 6-wire cable 6p connected to the second connector block 12, which is connected to the lighting element driver 4 with a 4-wire cable type 4p. The EC motor 2 is connected to the second connector block 12 with a 2-wire cable type 2p.
Even though the embodiment of Figure 4 depicts a specific embodiment of the cooker hood 1 , and in particular a power supply arrangement thereof, the present invention is clearly embodied by Figure 4 as no centralized power board or PCB is used to separately feed the control unit 5 from the mains supply terminal 6. That is, according to the present invention the control unit 5 is powered by the lighting element driver 4 and there is no need to separately transform electrical power supplied at the mains supply terminal 6, e.g. using a separate inverter, for powering the control unit 5. The lighting element driver 4 already provides a suitable voltage and sufficient power for powering the control unit 5 in addition to the one or more lighting elements 3. In this way a complex, expensive and vulnerable power board can be dispensed with and as such electrical circuit complexity of the cooker hood 1 is reduced considerably, as well as manufacturing cost. In light of the above disclosure the present invention further relates to a power supply arrangement for a cooker hood or kitchen extraction exhaust unit, wherein the power supply arrangement comprises a mains supply terminal 6, one or more lighting elements 3, a lighting element driver 4 connected to the mains supply terminal 6 and the one or more lighting elements 3. There is further provided an electronically commuted (EC) motor 2 driving a fan, wherein a power supply terminal of the EC motor 2 is directly connected to the mains supply terminal 6 and a control terminal of the EC motor 2 is connected to a control unit 5, wherein the control unit 5 is connected to a power supply output of the lighting element driver 4.
In conformity with the cooker hood 1 as disclosed above, the power supply
arrangement circumvents the use of a power board or PCB for distributing power and/or control signals to/from a control unit 5, an EC motor 2 and a lighting element driver 4. Instead, the lighting element driver 4 can be utilized to provide power to the control unit 5, which is then able to communicate with the EC motor 2 and/or the one or more lighting elements 3 for control thereof. Electrical connections for power and control signal distribution is then realized with standard electrical cable types.
The present invention embodiments have been described above with reference to a number of exemplary embodiments as shown in the drawings. Modifications and alternative implementations of some parts or elements are possible, and are included in the scope of protection as defined in the appended claims.

Claims

1 . Cooker hood, comprising a mains supply terminal (6), one or more lighting elements (3), a lighting element driver (4) connected to the mains supply terminal (6) and the one or more lighting elements (3), and an electronically commuted (EC) motor (2) driving a fan, characterized in that a power supply terminal of the EC motor (2) is directly connected to the mains supply terminal (6) and a control terminal of the EC motor (2) is connected to a control unit (5), wherein the control unit (5) is connected to a power supply output of the lighting element driver (4).
2. Cooker hood according to claim 1 , wherein the control unit (5) is integrated with a user interface of the cooker hood.
3. Cooker hood according to claim 1 or 2. wherein the one or more lighting elements (3) are LED lighting elements, and the lighting element driver (4) is a LED power supply.
4. Cooker hood according to any one of claims 1 to 3, wherein the control unit (5) is connected to the lighting element driver (4) to control operating parameters of the lighting elements (3).
5. Cooker hood according to any one of claims 1 to 4, further comprising a standby relay (8) connected between the power supply terminal of the EC motor (2) and the mains supply terminal (6), and wherein a control input of the standby relay (8) is connected to the control unit (5).
6. Cooker hood according to any one of claims 1 to 5, further comprising a mains filter (7) connected between the mains supply terminal (6) and the EC motor (2) and/or the lighting element driver (4).
7. Cooker hood according to any one of claims 1 to 6, wherein the control unit (5) is arranged to control an operating speed of the EC motor (2) using an analogue control signal or a pulse width modulated signal.
EP17704319.7A 2016-02-03 2017-01-26 Cooker hood and power supply arrangement thereof Active EP3411631B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17704319.7T PL3411631T5 (en) 2016-02-03 2017-01-26 Cooker hood and power supply arrangement thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2016214A NL2016214B1 (en) 2016-02-03 2016-02-03 Cooker hood and power supply arrangement thereof.
PCT/NL2017/050052 WO2017135812A1 (en) 2016-02-03 2017-01-26 Cooker hood and power supply arrangement thereof

Publications (3)

Publication Number Publication Date
EP3411631A1 true EP3411631A1 (en) 2018-12-12
EP3411631B1 EP3411631B1 (en) 2020-01-22
EP3411631B2 EP3411631B2 (en) 2023-07-12

Family

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EP17704319.7A Active EP3411631B2 (en) 2016-02-03 2017-01-26 Cooker hood and power supply arrangement thereof

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EP (1) EP3411631B2 (en)
CN (1) CN108700308B (en)
AU (1) AU2017216120B2 (en)
NL (1) NL2016214B1 (en)
PL (1) PL3411631T5 (en)
WO (1) WO2017135812A1 (en)

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Also Published As

Publication number Publication date
CN108700308B (en) 2021-03-05
CN108700308A (en) 2018-10-23
AU2017216120A1 (en) 2018-08-09
EP3411631B1 (en) 2020-01-22
WO2017135812A1 (en) 2017-08-10
AU2017216120B2 (en) 2021-11-04
PL3411631T3 (en) 2020-09-07
EP3411631B2 (en) 2023-07-12
NL2016214B1 (en) 2017-08-11
PL3411631T5 (en) 2023-10-30

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