WO2023140803A1

WO2023140803A1 - Lighting control method for an oven

Info

Publication number: WO2023140803A1
Application number: PCT/TR2021/051682
Authority: WO
Inventors: Metin OZTURK; Baris OZ; Fatih ZUNGOR; Sultan SANCAR
Original assignee: Mamur Teknoloji Sistemleri San. A.S.
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2023-07-27

Abstract

A hinged lid (14) on a housing (11) provides an opening condition and a closing condition ( 16)( 18) by opening and closing the passage to the cooking chamber (12); in the case of opening (16) of the cover (14) through an electronic apparatus (30) an algorithm (52) activated to provide lighting control (44) allows the lighting element (20) to switch from the closed mode to the open mode (28) and to close the cover (14). In the case (18) of the lighting element (20) switching from the open mode to the closed mode (24) with the predetermined algorithm (52) activated over the electronic apparatus (30), the electronic apparatus (30) is returned from the cover (14) in the opening state (16) of the cover, by receiving a power supply (32), enabling the lighting element (20) to switch from the off mode to the on mode (28) by increasing the light intensity (46) in predetermined periods; lighting for an oven comprising the electronic apparatus (30) receiving feedback (32) from the door (14) in the case of closing the door (18) and enabling the lighting element (20) to switch from the open mode to the closed mode (24) by reducing the light intensity in predetermined periods (48).

Description

LIGHTING CONTROL METHOD FOR AN OVEN

TECHNICAL FIELD

The invention relates to an illumination control method for an oven, wherein the illumination element located in the cooking chamber is turned on and off according to the status of the oven door.

PRIOR ART

In the literature, an oven is defined as a device that uses energy sources to cook, melt, reheat, or dry a substance within a closed area. There are many types of ovens, ranging from those used for cooking food to those used in the industry. There are various types of ovens, such as sterilization ovens, domestic ovens, ceramic ovens, coal production ovens, blast furnaces, industrial kitchen ovens, bread ovens, etc. In the literature, it is stated that for ovens used in homes, there is a need for lighting during cooking to enable the interior of the oven to be seen. Halogen or LED lamps are commonly used for lighting. Halogen lamps are mostly driven with the help of a relay in many applications. When operations such as dimming or delayed opening are desired in addition to the on-off function, there is a need for analog components and manual control.

EP1299678 relates to an oven comprising illumination for a cooking compartment. Said illumination is continuously reduced by a dimmer device of a control unit, not in an immediate manner, but over a period of time in which the user optically perceives the weakening illumination. In a preferred embodiment, the light intensity is also continuously increased upon switching on the cooking compartment illumination.

BRIEF DESCRIPTION OF THE INVENTION

The objective of the invention is to develop an illumination control method for an oven, in which the illumination element located in the cooking chamber gradually transitions to the open mode by increasing the light intensity, or to the closed mode by decreasing the light intensity, upon the activation of a predetermined algorithm through an electronic device receiving feedback from the door in the case of the door being opened or closed. In order to achieve the aforementioned objective, the invention relates to a lighting control method for an oven, comprising the steps of providing a lighting element on a free wall of a cooking chamber located inside a cavity of a housing with an open mode or a closed mode of illumination; providing a hinged door on the housing to open and close access to the cooking chamber in an opening state and a closing state; transitioning the lighting element from the closed mode to the open mode when the door is in the opening state through an electronic device with a lighting control by activating an algorithm and transitioning the lighting element from the open mode to the closed mode when the door is in the closing state through the electronic device by activating a predetermined algorithm. The invention further comprises the steps of the electronic device receiving feedback from the door in the opening state to enable the lighting element to gradually increase the light intensity in predetermined periods for the transition from the closed mode to the open mode; the electronic device receiving feedback from the door in the closing state to enable the lighting element to gradually decrease the light intensity in predetermined periods for the transition from the open mode to the closed mode. In this way, it is ensured that the lighting element gradually transitions to the open mode by increasing the light intensity or transitions to the closed mode by gradually decreasing the light intensity.

A preferred application of the invention comprises the step of providing phase transmission of a power input electrically connected to the electronic device. In this way, the electronic device maintains the working condition.

A preferred application of the invention comprises the step of detecting the opening or closing state of the door by a door detection unit electrically connected to the electronic device, receiving feedback from the door upon the arrival of the power input. In this way, with the arrival of the phase input, a cover position detection process is initiated first to provide lighting control.

A preferred application of the invention further comprising the steps of transmitting the door state detection from the detection unit to a controller electrically connected to the electronic device; and subsequently activating the algorithm by the controller to initiate lighting control. As a result, with the transmission of the detected cover position to the controller, the algorithm providing lighting control in the electronic device is activated. In this case, the algorithm includes the processing sequence according to the designed method.

A preferred application comprises the steps of receiving the power input when the door is in the closing state; subsequently detecting the closing state of the door in the detection unit and transmitting to the controller; the controller activating the algorithm for transitioning the lighting element from the open mode to the closed mode; providing lighting control by suppressing the power input in predetermined periods by the driver unit electrically connected to the controller and the electronic device, causing the lighting element to be dimmed by reducing the light intensity. As a result, if the cover position is in a closed state, after activating the algorithm, the driver unit reduces the light intensity of the lighting element, causing it to turn off. In this case, the lighting element is an LED.

A preferred application of the invention comprises the steps of receiving the power input when the door is in the opening state; subsequently detecting the open state of the door in the detection unit and transmitting the door state detection to the controller; the controller activating the algorithm for transitioning the lighting element from the closed mode to the open mode; the driver unit increasing the suppressed power input in predetermined periods and transmitting it to the lighting element, thereby providing lighting control. As a result, if the cover position is in an open state, after activating the algorithm, the driver unit gradually increases the light intensity of the lighting element, transitioning it from a closed mode to an open mode.

A preferred embodiment of the invention comprises a controlled semiconductor switching element electrically connected to the driver unit for suppressing the power input and increasing the suppressed power input. As a result, with the help of the switching element, the driver unit can either suppress the power input or gradually increase the attenuated power input.

BRIEF DESCRIPTION OF THE FIGURES

Figure 1 is a schematic illustration of an oven.

Figure 2 is a schematic representation of a cooking chamber.

Figure 3 is a schematic illustration of an electronic device circuit.

Figure 4 is a schematic illustration of an electronic device circuit connection.

Figure 5 is the flow chart of the illumination control method for an oven that is the subject of the invention. Figure 6 is a graphical representation of an operating state in the electronic device of the illumination control method for an oven of the invention.

DETAILED DESCRIPTION OF THE INVENTION

In this detailed description, the subject matter of the invention is explained without any limitation and with references to examples only to better understand the subject matter.

Figure 1 schematically shows an oven. Figure 2 schematically shows a cooking chamber. Figure 3 schematically shows an electronic device circuit. Figure 4 schematically shows the electronic device circuit connection. Figure 5 shows a flow diagram of the lighting control method for an oven according to the invention.

A housing (11 ) surrounds an oven (10). There is a cooking chamber (12) within a cavity of the housing (11). A lighting element (20) is located on a free wall of the cooking chamber (12), for example on an upper wall of the cooking chamber (12). The lighting is provided in an open mode or closed mode (22) (26) with the lighting element (20). A hinged door (14) is located on a front face of the oven housing (11). The door (14) provides an opening and closing state (16)(18) for the access opening of the cooking chamber (12). Lighting control (44) is provided through an electronic device (30) when the door (14) is in the opening state (16) or closing state (18). An algorithm is activated (52) to provide lighting control (44). With the activation of the algorithm (52), the transition of the lighting element (20) from the closed mode to the open mode (28) is ensured. Additionally, when the door (14) is in the closing state (18), the electronic device (30) activates the predetermined algorithm (52) to transition the lighting element (20) from the open mode to the closed mode (24). The electronic device (30) receives feedback (32) from the door (14) when it is in the opening state (16). With the receipt of feedback (32), the light intensity of the lighting element (20) is gradually increased in predetermined periods (46) and the transition of the lighting element (20) from the closed mode to the open mode (28) is performed (28). In the opposite situation, when the electronic device (30) is in the closing state (18), feedback is received from the door (14) (32) and the light intensity of the lighting element (20) is decreased in predetermined periods (48) to transition the lighting element (20) from the open mode to the closed mode (24). To provide lighting control (44), the electronic device (30) includes an electrically connected power input (56) that provides phase transmission, a neutral line (37) to prevent short-circuiting, a door detection unit (38) that receives feedback from the door when the power input (56) arrives (32) and detects the opening or closing state (58) (60) of the door (14), a controller (40) that activates the algorithm (52) for providing lighting control (44) and receives door status detection (62), and a driver unit (42) that suppresses and attenuates the power input (34) (64) or increases the suppressed power input (66). The detection unit (38) is a detection sensor, the controller (40) is a microprocessor, and the driver unit (42) is a driver circuit. Here, the sequence of operations for the lighting control method for an oven according to the invention when the oven door is in the closed state (18) is provided below:

• Power input arrives (56) when the door is in the closed state (18),

• Detection (60) of the door's closed state in the detection unit (38) and transmission to the controller (62),

• The controller (40) activating the algorithm (52) to transition the lighting element (20) from the open mode to the closed mode (24),

• The driver unit (42) suppressing the power input (34) in predetermined periods (64) to reduce the light intensity of the lighting element (20) and thus providing lighting control (44) (48).

The sequence of operations for the lighting control method for an oven according to the invention when the oven door is in the open state (18) is provided below:

• Power input arrive (46) when the door is in the open state (16),

• Detection (58) of the door's open state (14) in the detection unit (38) and transmission (62) of the door status detection to the controller (40),

• The controller (40) activating the algorithm (52) to transition the lighting element (20) from the closed mode to the open mode (28),

• The driver unit (42) increasing the attenuated power input (34) in predetermined periods (66) and transmitting it to the lighting element (20) and thus providing lighting control (44).

In the electronic device (30), it is also provided to suppress (64) (66) the power input (34) and increase the damped power input, with the help of a controlled semiconductor switching element (54) that is electrically connected on the driver unit (42).

In Figure 6, an operating state of the illumination control method in the electronic device for an oven that is the subject of the invention is shown graphically.

Here, the process of suppressing (pulse) the power (network) input (34) given at certain periods or increasing the suppressed power input (64) (66) is specified. In addition, the n number of pulses (64) sent changes the fading rate of the lamp. The given n number calculation equation and related explanations are given below;

* n — TyotalDimmingTime I Toimming

• T-rotaiDimmingTime: Total dimming time • T_Dimmin_g: Cycle time

As an example of the operation of the illumination control method for an oven that is the subject of the invention; • After the oven door (14) is closed (18), the lamp (20) inside the oven (10) goes out slowly in a period of 4.5 seconds,

• Here, 300ms is given as the Toimming period,

• Our mains frequency is 50Hz,

• When the lamp (20) is driven (44), 15 sine waves are formed in 300 ms, • If we eliminate a sinus pulse every 300ms, the light must be completely extinguished 4.5 seconds after the oven door (14) is closed (50).

REFERENCE NUMBERS

10 Oven 38 Detection unit

11 Housing 40 Controller

12 Cooking chamber 42 Drive unit

14 Cover 44 Illumination control

16 Door opening status 46 Increasing the luminous intensity

18 Lid closing status 48 Light intensity reduction

20 Lighting elements 50 Luminous intensity damping

22 Open mode 52 Enabling the algorithm

24 Switching from on to off mode 54 Switching element

26 Off mode 56 Power input coming

28 Switching from off mode to on mode 58 Power-on state detection

30 Electronic device 60 Shutdown state detection

32 Getting feedback 62 Detection status transmission

34 Power input 64 Power input suppression

36 Phase transmission 66 Increasing suppressed power input

37 Neutral line

Claims

1- A lighting control method for an oven, comprising the steps of providing a lighting element (20) on a free wall of a cooking chamber (12) located inside a cavity of a housing (11 ) with an open mode or a closed mode of illumination (22) (26); providing a hinged door (14) on the housing (11 ) to open and close access to the cooking chamber (12) in an opening state and a closing state (16) (18); transitioning the lighting element (20) from the closed mode to the open mode (28) when the door (14) is in the opening state (16) through an electronic device (30) with a lighting control (44) by activating an algorithm (52) and transitioning the lighting element (20) from the open mode to the closed mode (24) when the door (14) is in the closing state (18) through the electronic device (30) by activating a predetermined algorithm (52); characterized by comprising the steps of the electronic device (30) receiving feedback (32) from the door (14) in the opening state (16) to enable the lighting element (20) to gradually increase the light intensity (46) in predetermined periods for the transition from the closed mode to the open mode (28); the electronic device (30) receiving feedback (32) from the door (14) in the closing state (18) to enable the lighting element (20) to gradually decrease the light intensity (48) in predetermined periods for the transition from the open mode to the closed mode (24).

2- A lighting control method for an oven according to claim 1 , further comprising the step of providing phase transmission of a power input (56) electrically connected to the electronic device (30).

3- A lighting control method for an oven according to claim 2, further comprising the step of detecting the opening or closing state (58) (60) of the door (14) by a door detection unit (38) electrically connected to the electronic device (30), receiving feedback (32) from the door upon the arrival of the power input (56).

4- A lighting control method for an oven according to claim 3, further comprising the steps of transmitting (62) the door state detection from the detection unit (38) to a controller (40) electrically connected to the electronic device (30); and subsequently activating the algorithm (52) by the controller (40) to initiate lighting control (44).

5- A lighting control method for an oven according to any one of the preceding claims, wherein the steps of receiving the power input (56) when the door is in the closing state (18); subsequently detecting the closing state of the door in the detection unit (38) and transmitting to the controller (62); the controller (40) activating the algorithm (52) for transitioning the lighting element (20) from the open mode to the closed mode (24); providing lighting control (44) by suppressing the power input (34) in predetermined periods (64) by the driver unit (42) electrically connected to the controller (40) and the electronic device (30), causing the lighting element (20) to be dimmed by reducing the light intensity (48).

6- A lighting control method for an oven according to any one of the preceding claims, wherein the steps of receiving the power input (46) when the door is in the opening state (16); subsequently detecting the open state of the door (14) in the detection unit (38) and transmitting the door state detection to the controller (40) (62); the controller (40) activating the algorithm (52) for transitioning the lighting element (20) from the closed mode to the open mode (28); the driver unit (42) increasing the suppressed power input (34) in predetermined periods (66) and transmitting it to the lighting element (20), thereby providing lighting control (44).

7- A lighting control method for an oven according to any one of the preceding claims, wherein a controlled semiconductor switching element (54) electrically connected to the driver unit (42) for suppressing the power input (34) and increasing the suppressed power input (64) (66).