CN118475797A

CN118475797A - Smoke exhaust ventilator and control method thereof

Info

Publication number: CN118475797A
Application number: CN202280086483.4A
Authority: CN
Inventors: 李尚真; 金相镇; 吴昌训
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2022-03-03
Filing date: 2022-12-13
Publication date: 2024-08-09
Also published as: EP4431817A4; US20230280043A1; US12241633B2; EP4431817A1

Abstract

According to one disclosed aspect, a range hood includes: a first shell, including a first inlet arranged in a bottom surface thereof and a damper arranged on a top surface thereof; a second shell, arranged on the first shell to form a space in which a fan module is arranged, and including a second inlet arranged in a side surface thereof; a first sensor, arranged in the second shell and detecting pollutants; a second sensor, arranged above the first sensor and detecting pollutants; and a controller for controlling the output of the fan module and the opening/closing of the damper based on data on pollutant concentrations obtained from the first sensor and the second sensor.

Description

Smoke exhaust ventilator and control method thereof

Technical Field

The present disclosure relates to a range hood and a control method thereof.

Background

A range hood is a device provided above a gas cooker or an induction cooker for sucking or sucking in pollutants such as combustion gas, fine dust, ultra fine dust, etc. generated when heating food.

When operated, the extractor hood draws in or draws in contaminants through a downwardly facing suction surface of the extractor hood as the contaminants rise from the cooking device and discharges the contaminants to the external environment outside the building in which the extractor hood is operated.

The suction surface of the range hood is spaced a distance from the ceiling and cooking device so that some contaminants may not be sucked through the suction surface but may rise to the ceiling and spread into the kitchen space or spread throughout the kitchen space.

To compensate for these drawbacks, there may be some solutions for increasing the suction power of the extractor hood or for mounting the hood. Such solutions are often inefficient in terms of energy consumption, noise, and appearance.

Disclosure of Invention

Technical problem

The present disclosure provides a range hood and a control method thereof to prevent contaminants not inhaled by the range hood from diffusing to a ceiling.

The present disclosure also provides a range hood and a control method thereof to reduce contaminants diffused into a room by using an external sensor other than the range hood.

Technical proposal

According to aspects of the present disclosure, a range hood includes: a first housing including a first inlet formed on a lower surface and a damper formed on an upper surface; a second housing disposed above the first housing to form a space in which the fan module is disposed, and including a second inlet formed on a side surface; a first sensor disposed in the second housing and configured to detect a contaminant; a second sensor disposed above the first sensor and configured to detect a contaminant; and a controller configured to control an output level of the fan module and open or close the damper based on concentration data of the pollutants obtained from the first sensor and the second sensor.

The controller is configured to: controlling an output level of the fan module based on the first concentration of the contaminant obtained from the first sensor in response to the first concentration of the contaminant obtained from the first sensor being higher than the second concentration of the contaminant obtained from the second sensor; and responsive to the second concentration being above the preset concentration, opening the damper.

The controller is configured to: controlling an output level of the fan module based on a first concentration of the contaminant obtained from the first sensor in response to operation of the cooking device; opening a damper in response to a second concentration of contaminants obtained from a second sensor being higher than the first concentration during operation of the cooking device; and controlling an output level of the fan module based on the magnitude of the second concentration.

The concentration of the contaminant is divided into a first range, a second range, and a third range according to size, and wherein the controller is configured to: the output level of the fan module is controlled to a first level in response to the first concentration falling within a first range, the output level of the fan module is controlled to a second level in response to the first concentration falling within a second range, and the output level of the fan module is controlled to a third level in response to the first concentration falling within a third range.

The controller is configured to: in response to the first concentration falling within the first range and the second concentration being higher than the first concentration, the output level of the fan module is controlled to a second level or higher.

The controller is configured to: the change in the second concentration is monitored, and in response to the second concentration falling within the first range, the output level of the fan module is controlled to a first level and the damper is closed.

The range hood further includes a display configured to display the concentration of the contaminants and the output level of the fan module.

The controller is configured to: controlling the display to display one of the first sensor or the second sensor based on a comparison between the first concentration and the second concentration; controlling the fan module and the damper based on the concentration measured by the displayed sensor; and controlling the display to display the output of the fan module and the open state of the damper.

The controller is configured to: in response to the second concentration obtained from the second sensor being higher than the preset concentration, the damper is opened to draw in the contaminant through the first inlet and the second inlet.

The controller is configured to: in response to termination of operation of the cooking device, with the damper open, the output level of the fan module is controlled based on the magnitude of the second concentration.

According to aspects of the present disclosure, a range hood includes: a first housing including a first inlet formed on a lower surface and a damper formed on an upper surface; a second housing disposed above the first housing to form a space in which the fan module is disposed, and including a second inlet formed on a side surface; a first sensor disposed in the second housing and configured to detect a contaminant; a communication module configured to perform wireless communication with an external device equipped with a second sensor for detecting a contaminant; and a controller configured to control an output level of the fan module and opening or closing of the damper based on concentration data of the contaminants obtained from the first sensor and the second sensor.

The controller is configured to: the communication module is controlled to obtain a first concentration from the first sensor and a second concentration from the external device.

The range hood further comprises a display configured to display an operational state of the range hood and to receive user input, wherein the controller is configured to: in response to detecting the external device and receiving a user input, an operational state for a connection between the range hood and the external device is indicated.

The communication module is configured to: wireless communication is performed with the user terminal to control the range hood and the external device, and wherein the controller is configured to control the communication module to obtain the second concentration from the external device selected by the user terminal.

The external device includes an air conditioner, an air cleaner, or an air monitor.

The controller is configured to: controlling an output level of the fan module based on a first concentration of the contaminant obtained from the first sensor in response to operation of the cooking device; during operation of the cooking device, opening the damper in response to the second concentration of contaminants obtained from the second sensor being higher than the first concentration; and controlling an output level of the fan module based on the magnitude of the second concentration.

Advantageous effects

According to the present disclosure, diffusion of pollutants generated in a kitchen can be prevented, and an operation time of the range hood after cooking is completed can be saved by effectively sucking the pollutants.

According to the present disclosure, an external sensor may be used to improve the quality of indoor air through a range hood.

Drawings

Fig. 1 is a perspective view of a cooking apparatus installed in a space according to an embodiment of the present disclosure.

Fig. 2 is a side cross-sectional view of a cooking apparatus installed in a space according to an embodiment of the present disclosure.

Fig. 3 is a perspective view of a range hood according to an embodiment of the present disclosure.

Fig. 4 is a bottom view of a range hood according to an embodiment of the present disclosure.

Fig. 5 shows the fan module separated from the range hood according to an embodiment of the present disclosure.

Fig. 6 and 7 illustrate a closed state of the damper according to an embodiment of the present disclosure.

Fig. 8 and 9 illustrate an opened state of the damper according to an embodiment of the present disclosure.

Fig. 10 is a control block diagram of a range hood according to an embodiment of the present disclosure.

Fig. 11 is a flowchart of a method of controlling a range hood according to an embodiment of the present disclosure.

Fig. 12 is a flowchart of a method of controlling a range hood when the concentration of the contaminant measured by the first sensor is higher than the concentration of the contaminant measured by the second sensor.

Fig. 13 is a flowchart of a method of controlling a range hood when the concentration of the contaminant measured by the second sensor is higher than the concentration of the contaminant measured by the second sensor.

Fig. 14 is a flowchart of a method of controlling a range hood according to another embodiment of the present disclosure.

Fig. 15 shows interactions associated with a second sensor and range hood arranged externally.

Fig. 16 illustrates a User Interface (UI) output on a display of a range hood according to an embodiment of the present disclosure.

Fig. 17 illustrates a UI output on a display of a range hood according to another embodiment of the present disclosure.

Fig. 18 shows the change in the concentration of the contaminants at the height of the front of the hood and the height of the ceiling surface after cooking.

Detailed Description

Like numbers refer to like elements throughout. Not all elements of the embodiments of the present disclosure will be described, and descriptions of contents known in the art or contents overlapping each other in the embodiments will be omitted. The term "unit, module, component, or block" may refer to content implemented in software or hardware, and a plurality of units, modules, components, or blocks may be integrated in one component, or a unit, module, component, or block may include a plurality of components according to embodiments of the present disclosure.

It should also be appreciated that the term "connect" or its derivatives refer to both direct and indirect connections, and that indirect connections include connections over a wireless communication network.

The term "comprising" or "comprises" is inclusive or open-ended and does not exclude additional, unrecited elements or method steps, unless otherwise indicated.

Throughout the specification, when it is referred to that one element is "on" another element, this means that not only the element is located near the other element, but also a third element is present between the two elements.

It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another region, layer or section.

It is to be understood that the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

Reference numerals used for method steps are used for ease of explanation only and do not limit the order of the steps. Thus, unless the context clearly dictates otherwise, the order written may be practiced otherwise.

Reference will now be made in detail to embodiments of the present disclosure that are illustrated in the accompanying drawings.

Fig. 1 is a perspective view illustrating a cooking apparatus installed according to an embodiment of the present disclosure. Fig. 2 is a side cross-sectional view of a cooking apparatus installed according to an embodiment of the present disclosure.

Referring to fig. 1 and 2, a cooking apparatus 1 may be placed in an indoor space. For example, the cooking device 1 may be installed in a kitchen within a building. The cooking device 1 may be combined with a cabinet.

The cooking device 1 may comprise a heating device 10 for heating food. The heating device 10 may include an oven (oven), a gas range (gas stove), an induction range (induction range), etc. The heating device 10 may include a cooktop (cooktop) unit on which food is placed and cooked.

The cooking device 1 may include a range hood 20. The hood 20 may draw in or suck in fine dust, ultra fine dust, exhaust gas, smoke, food smell, etc. generated by the heating device 10, and may discharge the fine dust, ultra fine dust, exhaust gas, smoke, food smell, etc. to an external environment, such as an outdoor space.

Although in the embodiment of the present disclosure, the range hood 20 is defined as an integral part of the cooking apparatus 1, it is not limited thereto, and the range hood 20 may be defined as an independent device from the cooking apparatus 1.

The range hood 20 is not limited to the above-described embodiment, but may be provided in combination with a cooking device unit, such as an OTR unit.

The range hood 20 may be placed at or between the upper cabinets (cabinetry). The heating device 10 of the cooking apparatus 1 may be installed below the range hood 20 at a distance from the range hood 20 in the first direction a. The heating device 10 may be placed at or between the lower cabinets. Hereinafter, the first direction a will be referred to as a vertical direction.

In other words, the range hood 20 may be disposed above the heating device 10 in the first direction a. Accordingly, the hood 20 may draw in or suck in exhaust gas, smoke, food smell, or the like generated from the heating device 10, and may discharge the exhaust gas, smoke, food smell, or the like to an external environment, such as an outdoor space.

Although the cooking apparatus 1 is described as being installed indoors, where and how the cooking apparatus 1 is installed are not limited thereto, and the cooking apparatus 1 may be installed in various ways according to the size or nature of the location in which the cooking apparatus 1 is installed, the installation purpose, and the like.

The hood 20 will now be described in detail.

Fig. 3 is a perspective view of a range hood according to an embodiment of the present disclosure. Fig. 4 is a bottom view of a range hood according to an embodiment of the present disclosure.

Referring to fig. 3 and 4, the range hood 20 may include a first housing 30, a second housing 40, and a fan module 100.

The first housing 30 may include a first inlet 31 through which smoke or other contaminants generated from the heating device 10 flow in. The first inlet 31 may be formed on a lower surface of the first housing 30. A filter 32 that matches certain dimensions of the first inlet 31 may be installed at or near the first inlet 31. A filter 32 may be installed at the first housing 30 to cover the first inlet 31. The filter 32 may be provided to filter out foreign substances contained in the smoke introduced through the first inlet 31.

The shape of the first housing 30 may be almost similar to a rectangular parallelepiped. The flow path 33 may be formed in the first housing 30. The flow path 33 may be formed to guide the air having passed through the filter 32 and the first inlet 31 to the second housing 40. The flow path 33 may refer to an inner space of the first housing 30, or to a space separately partitioned in the first housing 30 or a pipe installed in the first housing 30.

A damper 140 may be provided on an upper surface of the first housing 30 to guide external air introduced through a second inlet 35 (to be described later) to the exhaust duct 3 or block the external air. The damper 140 may be opened or closed according to a control signal, and may have a rotary structure capable of controlling an opening degree. When the fan 110 of the fan module 100 rotates and the damper 140 is opened, external air flows in through the second inlet 35 and moves to the exhaust duct 3.

The damper 140 may be disposed on an upper surface of the first housing 30, and may be disposed in a portion of an overlapping region between the first housing 30 and the second housing 40.

The second housing 40 may be disposed on top of the first housing 30. The fan module 100 may be disposed in the second housing 40. Similar to the first housing 30, the second housing 40 may be shaped nearly like a rectangular parallelepiped. The second housing 40 may have a lower surface and an upper surface having a smaller area, and may be higher than the first housing 30. The second housing 40 may be provided separately and combined with the first housing 30. Or the second housing 40 and the first housing 30 may be integrally formed. In this case, the upper surface of the first housing 30 extends upward at an inclined angle with respect to the first direction a, so that the second housing 40 may be integrally formed with the first housing 30.

The second housing 40 may include a second inlet 35, and smoke generated from the heating device 10 and stagnating at the ceiling side instead of flowing in through the first inlet 30 flows into the second housing 40 through the second inlet 35. The second inlet 35 may be formed at both sides or one side of the second housing 40.

The flow path 41 may be formed in the second housing 40. The flow path 41 may be connected to the flow path 33 of the first housing 30. The air flowing through the first inlet 31 may flow along the flow path 33 of the first housing 30, then flow along the flow path 41 of the second housing 40, and then may be discharged to the outside through the exhaust duct 3. The fan module 100 may be disposed in the flow path 41 or along the flow path 41. The flow path 41 may refer to an inner space of the second housing 40. Or the flow path 41 may refer to a space separately partitioned in the second housing 40 or a pipe installed in the second housing 40.

In an embodiment of the present disclosure, the fan module 100 may be placed in the second housing 40. Further, the fan module 100 may be arranged such that a rotation axis of the fan 110 (to be described later with reference to fig. 5) extends in the second direction B. Hereinafter, the second direction will be referred to as the front-rear direction. In other words, the fan module 100 may be arranged such that the rotation axis of the fan 110 extends in the front-rear direction. With this arrangement of the fan module 100, air may be drawn in or sucked in from the front of the fan module 100 and discharged upward. The fan module 100 may be connected to the exhaust duct 3 to discharge air to an external environment, such as an external space.

In an embodiment of the present disclosure, the first sensor 310 and the second sensor 320 may be disposed in the second housing 40. The first sensor 310 may be a Particulate Matter (PM) sensor, which is a device for measuring dust concentration, i.e., a device for measuring a pollutant level of indoor fine dust or air. The first sensor 310 may be one of a PM10 sensor for measuring the concentration of fine dust having a particle size of 10 μm, a PM2.5 sensor for measuring the concentration of fine dust having a particle size of 2.5 μm, and a PM1.0 sensor for measuring the concentration of fine dust having a particle size of 1.0 μm. The second sensor 320 may be of the same type as the first sensor 310, and may be disposed at a higher level than the first sensor 310 in the second housing 40. Thus, the first sensor 310 may detect the concentration of the contaminant rising from the heating device 10, while the second sensor 320 may detect the concentration of the contaminant stagnating at a location near the ceiling.

Fig. 5 illustrates a fan module separate from a range hood according to an embodiment of the present disclosure.

The fan module 100 may include a fan 110, a motor 120 (see fig. 10), and a fan frame 130, wherein the fan 110 rotates to circulate air, and the motor 120 is provided to rotate the fan 110; the fan frame 130 is configured to receive the fan 110 and the motor 120 therein.

The fan 110 may be configured to rotate so as to circulate air. In embodiments of the present disclosure, the fan 110 may include a centrifugal fan. The centrifugal fan may draw in or suck in air in a direction parallel to the rotation axis and may discharge air in a radial direction. In the embodiment of the present disclosure, the fan 110 may be disposed in the second housing 40 such that the rotation shaft extends in the front-rear direction. The fan 110 may include a gear hole 111 formed in the center.

The motor 120 may provide a driving force to rotate the fan 110. The motor 120 may include a rotation shaft 121 and a relative rotation preventing gear 122 coupled to the rotation shaft 121 to rotate together with the rotation shaft 121.

The relative rotation preventing gear 122 may be inserted into a gear hole 111 formed at the center of the fan 110. The gear hole 111 and the relative rotation preventing gear 122 may be provided to have matching shapes. Since the anti-relative-rotation gear 122 and the gear hole 111 are provided to have the matching shapes, the anti-relative-rotation gear 122 inserted into the gear hole 111 may not relatively rotate in the gear hole 111. The anti-relative-rotation gear 122 may rotate together with the rotation shaft 121 and may rotate together with the fan 110 by being inserted into the gear hole 111. Accordingly, when the rotation shaft 121 is rotated by the motor 120, the fan 110 may be rotated.

The fan frame 130 may be configured and arranged to house the fan 110 and the motor 120 therein. The fan frame 130 may include a first fan frame 131 covering one side of the fan 110 and a second fan frame 132 covering the other side of the fan 110. The first and second fan frames 131 and 132 may be coupled to each other by being moved and fastened in a direction along the rotation axis of the fan 110. The first and second fan frames 131 and 132 may be connected to each other to form an inner space, and the fan 110 and the motor 120 may be installed in the inner space formed by the first and second fan frames 131 and 132. In addition, the inner space may serve as a flow path in which air flowing by the fan 110 moves. In other words, the fan frame 130 may form a flow path in which air moves.

The fan frame 130 may include a fan inlet 130a and a fan outlet 130b, into which air flows through the fan inlet 130a and out through the fan outlet 130 b. Air circulated by the rotation of the fan 110 may flow into the fan frame 130 through the fan inlet 130a, and flow out of the fan frame 130 through the inside of the fan frame 130 and through the fan outlet 130 b.

The fan inlet 130a may be formed in the first fan frame 131. When the first and second fan frames 131 and 132 are coupled together, the fan outlet 130b may be formed. Specifically, a portion of the fan outlet 130b may be formed by the first fan frame 131, and the other portion of the fan outlet 130b may be formed by the second fan frame 132.

In an embodiment of the present disclosure, the fan 110 may be provided as a centrifugal fan in which the fan inlet 130a is formed to face the front of the range hood 20 and the fan outlet 130b is formed to face upward from the range hood 20. The rotation axis of the fan 110 may be parallel to the front-rear direction of the hood 20.

In the embodiment of the present disclosure, air moved by the rotation of the fan 110 may flow in through the fan inlet 130a, through the inside of the fan frame 130, and out of the fan outlet 130b. The fan outlet 130b may be connected to the exhaust duct 3, and air flowing out of the fan module 100 through the fan outlet 130b may move along the exhaust duct 3 and be discharged to an external environment, such as an external space.

In the present disclosure, unlike the conventional range hood, the second inlet 35 and the damper 140 may be additionally provided so as to draw in or suck in not only the air rising from the heating device 10 but also the air stagnating around the ceiling so that all the air can be discharged to the outside. The damper 140 may change the air flow by being opened or closed according to a control signal from the controller 200 (see fig. 10). This will be described in detail with reference to fig. 6 to 9.

Fig. 6 illustrates a closed state of the damper, and fig. 7 illustrates an air flow in a closed state of the damper in the range hood according to an embodiment of the present disclosure.

Referring to fig. 6, the damper 140 is shown in a closed state before or after the cooking apparatus 1 is operated. When the damper 140 is closed, no air movement is performed between the first housing 30 and the second housing 40, but there may be an air flow through the first inlet 30.

Referring to fig. 7, when the damper 140 is closed, contaminants generated from the heating device 10 may be brought into the inside of the fan frame 130 (see fig. 5) through the first inlet 30 (see fig. 4) and the fan inlet 130a (see fig. 5), may be discharged to the outside through the inside of the fan frame 130, and may be discharged to the outside through the fan outlet 130b (see fig. 5) and the exhaust duct 3 (see fig. 3) by the rotation of the fan 110 (see fig. 5).

Fig. 8 illustrates an open state of the damper, and fig. 7 illustrates an air flow in which the damper is in an open state in the range hood according to an embodiment of the present disclosure.

Referring to fig. 8, the damper 140 is shown in an open state after the cooking apparatus 1 has been operated for a certain period of time or after the operation of the cooking apparatus 1 is terminated. For example, when the contaminants are not discharged through the first inlet 30 due to the user moving an object for cooking or the contaminants are not sufficiently drawn or sucked through the first inlet 30 due to lack of the air amount of the fan 110, the damper 140 may be opened to provide the suction power for the second inlet 35.

As shown in fig. 8, the damper 140 has a rotating structure capable of switching between an opening operation and a closing operation, but unlike the illustrated one, the damper 140 may have a structure that is always opened so as to draw or suck contaminants through the second inlet 35 every time the fan 110 rotates. In this case, however, the suction power of the first inlet 30 may be dispersed.

Referring to fig. 9, when the damper 140 is opened, air may be introduced through the first inlet 30 and the second inlet 35. When the damper 140 is opened, the suction power generated by the fan 110 may be transferred not only to the first inlet 30 but also to the second inlet 35, so that contaminants stagnated around the ceiling may be drawn or sucked through the second inlet 35. Accordingly, the contaminants generated by the heating device 10 and contaminants that are not drawn in or sucked through the first inlet 30 but stagnate around the ceiling may be brought into the inside of the fan frame 130 through the fan inlet 130a by the rotation of the fan 110, may be discharged to the outside through the inside of the fan frame 130 and may be discharged to the outside through the fan outlet 130b and the exhaust duct 3.

In an embodiment of the present disclosure, the range hood 10 may include a motor 120 for providing a driving force to rotate a fan 110 (see fig. 5), a damper 140 for controlling transmission of suction power to a second inlet 35 (see fig. 3), a first sensor 310 and a second sensor 320 for detecting a concentration of pollutants, a display 400 for displaying an operation state of the range hood 10 and receiving a user input, and a communication module 500 for performing wireless communication with external devices.

The first sensor 310 and the second sensor 320 may be PM sensors, which are devices for measuring dust concentration, i.e., devices for measuring indoor fine dust or air concentration. The first sensor 310 and the second sensor 320 may be provided to be of the same type and may be disposed at different positions or heights with respect to the range hood.

The first sensor 310 may be installed at the lower side in the second housing 40 to directly detect the contaminants generated from the heating device 10.

The second sensor 320 may be installed at an upper side in the second housing 40 to detect contaminants generated from the heating device 10 but not drawn or sucked through the first inlet 31 but stagnated around the ceiling, or existing contaminants floating around the ceiling. As will be described later, the range hood 20 may be equipped with the first sensor 310 by default, and the second sensor 320 may be excluded in some embodiments of the present disclosure. In this case, the second sensor 320 may be a PM sensor that is not included in the range hood 20 but is included in an external device.

The display 400 may include a touch panel (not shown) for receiving a touch input from a user, a display panel (not shown) for displaying an operation state of the range hood 20, and a touch screen controller (not shown) for controlling operations of the touch panel and the display panel. The display 400 may display an operation state of the hood 20 and output a touch input of a user to the controller 200.

The communication module 500 may perform wireless communication with an external device 600 (see fig. 15), which will be described later. The communication module 500 may be implemented by various wireless communication technologies. For example, the communication module 500 may use at least one of Radio Frequency (RF), infrared communication, wireless fidelity (Wi-Fi), bluetooth, zigbee, or Near Field Communication (NFC). For example, the communication module 500 may be a bluetooth module.

The communication module 500 may transmit data to the external device 600 or receive data from the external device 600. For example, the communication module 500 may receive the contaminant concentration obtained from the second sensor 320 included in the external device 600 while being paired with the external device 600. In addition, the communication module 500 may communicate with the external device 600 connected to the network through Wi-Fi to receive the contaminant concentration obtained from the second sensor 320 included in the external device 600.

The controller 200 may include a memory 220 for storing programs and data for controlling the operation of the range hood 20 and a processor 210 for generating control signals to control the operation of the range hood 20 according to the programs and data stored in the memory 220. Processor 210 and memory 220 may be implemented in separate chips or in a single chip.

The memory 220 may store control programs and control data for controlling the operation of the range hood 20, and store various application programs and application data for performing various functions in response to input from a user. The memory 220 may temporarily store the output level of the fan module 100 for each contaminant concentration measured by the first sensor and/or the second sensor 320.

The memory 220 may include a volatile memory for temporarily storing data, such as a Static Random Access Memory (SRAM), a Dynamic Random Access Memory (DRAM), or the like. The memory 220 may also include a nonvolatile memory for storing data for a long time, such as Read Only Memory (ROM), erasable Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), and the like.

The processor 210 may include many different logic circuits and operation circuits, process data according to programs provided in the memory 220, and may generate control signals according to the processing results.

The components and operation of the components of the range hood 20 have been described so far. Based on these components, a method of controlling the hood 20 will now be described in detail.

Fig. 11 is a flowchart of a method of controlling a range hood according to an embodiment of the present disclosure, fig. 12 is a flowchart of a method of controlling a range hood when a concentration of a contaminant measured by a first sensor is higher than a concentration of a contaminant measured by a second sensor, and fig. 13 is a flowchart of a method of controlling a range hood when a concentration of a contaminant measured by a second sensor is higher than a concentration of a contaminant measured by a first sensor.

The controller 200 receives the contaminant concentration from the first sensor 310 and the second sensor 320 in 1101. The pollutant may refer to fine dust, ultra fine dust, exhaust gas, smoke, etc. generated from the heating device 10, and when the first sensor 310 and the second sensor 320 are PM sensors, the controller 200 may obtain the fine dust concentration (μg/m ³) as the pollutant concentration. The controller 200 may obtain the amount of fine dust generated from the heating apparatus 10 based on the contaminant concentration of the first sensor 310, and obtain the amount of fine dust around the ceiling surface based on the contaminant concentration of the second sensor 320, thereby determining the location where more contaminants are present.

The controller 200 may compare the first concentration obtained from the first sensor 310 with the second concentration obtained from the second sensor 320 at 1102, and may control the hood 20 in the process according to fig. 12 when the first concentration is higher (a) and control the hood 20 in the process of fig. 13 when the second concentration is higher (B).

In an embodiment of the present disclosure, the controller 200 controls at least one of the fan module 100 or the damper 140 based on a comparison result between the concentration of the contaminant obtained from the first sensor 310 and the second sensor 320.

Although the first sensor 310 and the second sensor 320 are illustrated in fig. 12 and 13 as measuring the fine dust concentration of PM2.5, the present disclosure is not limited thereto and is based on the concentration of various pollutants.

Referring to fig. 12, first, an embodiment of the present disclosure in which the first concentration obtained from the first sensor 310 is high will be described.

Referring to fig. 12, the controller 200 controls 1201 the motor 120 of the fan module 100 based on the first concentration measured by the first sensor 310 and 1207 the damper 140 based on the second concentration measured by the second sensor 320.

The high first concentration measured by the first sensor 310 means that the concentration of the contaminant generated from the heating device 10 is higher than the concentration of the contaminant stagnating around the ceiling. Accordingly, the output level of the fan module 100 is determined based on the relatively high underside of the contaminant level. However, even in this case, the damper 140 is controlled based on the concentration of the contaminant measured by the second sensor 320 to remove the contaminant around the ceiling.

In an embodiment of the present disclosure, the controller 200 controls the output level of the fan module 100 based on the first concentration when the first concentration obtained from the first sensor 310 is higher than the second concentration obtained from the second sensor 320, and the controller 200 controls the damper 140 to be opened when the second concentration obtained from the second sensor 320 is higher than a preset concentration.

In this embodiment of the present disclosure, the controller 200 controls the output level of the fan module 100 according to the first concentration.

When the first concentration is not higher than 35 in 1202, the controller 200 controls the motor 120 to a first level in 1205; when the first concentration is between 35 and 100 at 1202, the controller controls the motor 120 to a second level at 1206; when the first concentration is higher than 100 at 1203, the controller 200 controls the motor 120 to a third level at 1204. In other words, the controller 200 controls the hood 20 to draw in or suck in the pollutant generated from the heating device 10 through the first inlet 31 by controlling the level of the motor 120 of the fan module 100 based on the first concentration.

The controller 200 controls the output level of the fan module 100 and simultaneously controls the damper 140 based on the second concentration in 1207. Accordingly, it is possible to remove both the contaminants generated by the heating device 10 and the contaminants remaining around the ceiling.

When the second concentration is higher than 35 at 1208, the controller 200 opens the damper 140 at 1209 so that contaminants that stagnate around the ceiling are drawn or sucked in through the second inlet 35. When the second concentration is not higher than 35 at 1208, the controller 200 closes the damper 140 at 1210 to concentrate the suction power on the first inlet 31.

Next, referring to fig. 13, an embodiment of the present disclosure in which the second concentration obtained from the second sensor 320 is high will be described.

Referring to fig. 13, the controller 200 controls the motor 120 of the fan module 100 based on the second concentration measured by the second sensor 320 in 1301, and monitors the change of the first concentration in 1307.

Basically, the range hood 20 according to the present disclosure is used to extract or suck up the pollutants generated by the heating device 10 and determine the suction power of the fan module 100 based on the pollutant concentration at the heating device side.

However, in embodiments of the present disclosure, when the second concentration is higher than the first concentration, it is interpreted that the pollutant level of the ceiling side is high, and controlling the fan module 100 based on the second sensor 320 instead of the first sensor 310 may improve the air quality in the kitchen space.

For example, according to the embodiment in connection with fig. 12 or the general embodiment of the present disclosure, when the second concentration is higher than 35 and the first concentration is lower than 35, the controller 200 may control the motor 120 to the first level according to the first concentration.

However, in this embodiment of the present disclosure, the control fan module 100 depends on the measurement result of the second sensor 320. Thus, when the second concentration is higher than 35 in 1302 and the first concentration is lower than 35 in 1308, the controller 200 controls the motor 120 to the second level in 1303. The controller 200 also controls the damper 140 to open to draw in or draw in contaminants from the ceiling side. The range hood 20 can mitigate dispersion of the suction power due to the opening of the damper 140 by changing the control standard. In other words, even when the first concentration is measured to be very low, the minimum output level of the fan module can be ensured.

The controller 200 monitors 1304 for a change in the second concentration and controls the fan module 100 and/or the damper 140 based on the second concentration.

As the fan module 100 continues to operate, at 1305, the controller 200 controls the motor 120 to a first level and closes the damper 140 when the second concentration is less than 35.

In an embodiment of the present disclosure, the controller 200 controls the output level of the fan module 100 based on the first concentration obtained from the first sensor 310 when the cooking apparatus is operated. The output level of the fan module 100 may be determined by controlling the level of the motor 120. At the start of the operation of the cooking apparatus, the contaminants are concentrated at one side of the heating apparatus 10, and thus the level of the motor 120 is controlled based on the first concentration. Thereafter, when the second concentration obtained from the second sensor 320 is higher than the first concentration obtained from the first sensor 310 during the operation of the cooking apparatus, the controller 200 opens the damper 140 and controls the output level of the fan module 100 based on the magnitude of the second concentration.

Meanwhile, the concentration of the contaminant may be divided into a first range, a second range, and a third range according to the size. For example, the first range may correspond to 15 to 35 μg/m ³, the second range may correspond to 36 to 75 μg/m ³, and the third range may correspond to 76 or more μg/m ³, based on standard ultrafine dust levels required by the environmental department. In this case, the memory 220 may store a setting by which the output level of the fan module 100 is a first level (a first motor level) for a first range, a second level (a second motor level) for a second range, and a third level (a third motor level) for a third range, and the controller 200 controls the fan module 100 according to the setting. The relationship between the classified ranges and the output level is an example, but the output level may be set for various ranges at the initial manufacturing stage and depends on the size of the particles detected by the sensor.

According to the above example, when the first concentration belongs to the first range, the controller 200 controls the output of the fan module 100 to the first level, when the first concentration belongs to the second range, the controller 200 controls the output of the fan module 100 to the second level, and when the first concentration belongs to the third range, the controller 200 controls the output of the fan module 100 to the third level. However, when the first concentration belongs to the first range and the second concentration obtained from the second sensor 320 is higher than the first concentration obtained from the first sensor 310, the controller 200 may control the output of the fan module 100 to the second level or higher.

In an embodiment of the present disclosure, the controller 200 may monitor the change in the second concentration and control the output of the fan module 100 to the first level and close the damper when the second concentration falls within the first range.

Further, in an embodiment of the present disclosure, when the second concentration obtained from the second sensor 320 is higher than the preset concentration, the controller 200 may open the damper 140 to cause the contaminants to be drawn in or inhaled through the first inlet 31 and the second inlet 35. In this embodiment of the present disclosure, the air quality enhancement in the kitchen space is prioritized by opening the damper 140 based on the absolute value of the second concentration, rather than the relative comparison between the first and second concentrations.

Further, in an embodiment of the present disclosure, when the operation of the cooking apparatus is stopped, the controller 200 may control the output level of the fan module 100 based on the magnitude of the second concentration when the damper 140 is opened. This is because the removal of contaminants on the ceiling side is preferred because no contaminants are generated on one side of the heating device 10 after cooking is completed.

Although the second sensor 320 for measuring the concentration of pollutants at the ceiling side is embedded in the range hood 20, the second sensor 320 may be provided in an external device 600 that works together with the range hood 20, as shown in fig. 15. In this regard, the range hood 20 may transmit or receive data with the external device 600 through bluetooth communication or transmit or receive data with the external device 600 connected to a network through Wi-Fi. This will be described in connection with fig. 14 and 15.

Fig. 14 is a flowchart of a method of controlling a range hood according to another embodiment of the present disclosure, and fig. 15 illustrates an interaction between a second sensor disposed outside and the range hood.

In an embodiment of the present disclosure, the range hood 20 may include a communication module 500 for performing wireless communication with the external device 600 to obtain data acquired by the second sensor 320 disposed in the external device 600. The external device 600 may be one of an air conditioner, an air cleaner, or an air monitor, and may correspond to various home appliances equipped with a sensor for detecting or measuring pollutants in an indoor space.

The second sensor 320 is used to detect contaminants on the ceiling side, and the relative position of the second sensor 320 in the external device 600 with respect to the range hood 20 is important.

The pollutants generated by the heating device 10 rise to the ceiling by buoyancy, stay on the ceiling side for a while, and descend.

In view of the moving tendency of the contaminants, it is desirable that the second sensor 320 in the external device 600 is positioned higher than the first sensor 310 in the range hood 20 when the external device 600 is within a certain distance from the range hood 20.

In embodiments of the present disclosure, the range hood 20 may further include a display for indicating the operational status of the range hood 20 and for receiving user input. In this case, when the external device 600 is detected through the communication module 500, the range hood 20 may display an operation state to connect the range hood 20 to the external device 600 and receive a user input corresponding to the operation state. For example, whether to employ the second sensor 320 may be left to the user's choice.

The range hood 20 may perform wireless communication with a user terminal (not shown), and the user terminal may have applications installed to control the range hood 20 and various external devices 600. In an embodiment of the present disclosure, the communication module 500 may perform wireless communication with a user terminal controlling the hood 20 and the external device 600, and the controller 200 may control the communication module 500 to obtain the second concentration from the external device 600 selected by the user terminal. For example, a user who knows the location of the second sensor 320 may determine the interaction between the second sensor 320 and the range hood 20 through an application installed in the user terminal.

In 1401, the controller 200 attempts a wireless connection between the range hood 20 and the second sensor 320 disposed externally. For example, the controller 200 may control the communication module 500 to interwork with the external device 600.

When the wireless connection between the external device 600 and the hood 20 is completed, the controller 200 outputs a UI for indicating the completion of the wireless connection with the second sensor 320 on the display 400 in 1402.

When the wireless connection between the range hood 20 and the second sensor 320 is complete, the controller 200 receives the contaminant concentrations from the first sensor 310 and the second sensor 320 at 1403. The controller 200 controls the communication module 500 to obtain the first concentration from the first sensor 310 and the second concentration from the external device 600.

The pollutant may refer to fine dust, ultra fine dust, exhaust gas, smoke, etc. generated from the heating device 10, and when the first sensor 310 and the second sensor 320 are PM sensors, the controller 200 may obtain the fine dust concentration (μg/m ³) as the pollutant concentration. The controller 200 may obtain the amount of fine dust generated from the heating apparatus 10 based on the contaminant concentration of the first sensor 310, and obtain the amount of fine dust around the ceiling surface based on the contaminant concentration of the second sensor 320, thereby determining the location where more contaminants are present.

The controller 200 may compare 1102 the first concentration obtained from the first sensor 310 with the second concentration obtained from the second sensor 320, control the range hood 20 in the process according to fig. 12 when the first concentration is higher (a), and control the range hood 20 in the process of fig. 13 when the second concentration is higher (B).

In an embodiment of the present disclosure, the controller 200 controls at least one of the fan module 100 or the damper 140 based on a comparison between the contaminant concentrations obtained from the first sensor 310 and the second sensor 320.

For example, the controller 200 may estimate the concentration of the contaminant on the ceiling side using the second sensor 320 disposed at the outside and improve the air quality in the kitchen space using the interworking with the external device 600.

Fig. 16 illustrates a UI output on a display of a range hood according to an embodiment of the present disclosure, and fig. 17 illustrates a UI output on a display of a range hood according to another embodiment of the present disclosure.

Referring to fig. 16, in an embodiment of the present disclosure, a display 400 may display a contaminant concentration measured by the first sensor 310 and a motor level corresponding to the contaminant concentration. For example, on the display 400 shown on the left side, the concentration "15" measured with respect to the ultra fine dust PM2.5 and the corresponding output level (motor level 1) of the fan module 100 are output. On the display 400 shown on the right, the concentration "130" measured with respect to the ultra fine dust PM2.5 and the corresponding output level (motor level 3) of the fan module 100 are output. In this case, a different color may be output on the display 400 for each concentration of the contaminant and each output level to emphasize the visual effect.

In an embodiment of the present disclosure, the range hood 20 may further include a display 400 for displaying the concentration of the contaminants and the output level of the fan module 100.

Further, in embodiments of the present disclosure, the range hood 20 may display one of the first sensor 310 or the second sensor 320 based on a comparison between the first concentration and the second concentration. In particular, a sensor measuring a relatively high concentration of contaminants may be displayed on the display 400 so that a user can indirectly learn where a large amount of contaminants are present. The controller 200 may control the fan module 100 and the damper 140 based on the displayed concentration measured by the sensor, and control the display 400 to display the output level of the fan module 100 and the open state of the damper 140.

For example, referring to fig. 17, when the concentration of the contaminant on the ceiling side is high, a message indicating this may be output on the display 400, and the fan module 100 may be controlled based on the second sensor 320, which may be notified by the display 400.

In fig. 18, values measured with respect to the concentration of fine dust generated when actually cooking mackerel (mackerel) and measured at the height of the nose and ceiling surface of the user are shown according to cooking times. The position with peaks on the two figures corresponds to the case when the user turns over the object to be cooked, or when the oil is splashed at one moment or there is uneven fluidity. As shown in fig. 18, the concentration of fine dust generated during cooking shows a tendency that the fine dust is not sucked into the hood but is gathered around the surface of the ceiling instead of being scattered through the front of the food. In the present disclosure, the second inlet 35 and the damper 140 are additionally provided in the structure, and the control of the fan module 100 may depend on the second sensor 320, thereby effectively removing fine dust collected around the ceiling surface.

Embodiments of the present disclosure have been described so far with reference to the accompanying drawings. It will be apparent to those skilled in the art that the present disclosure may be practiced in other forms than the embodiments described above without changing the technical idea or essential features of the present disclosure. The above-described embodiments of the present disclosure are intended to be examples only and should not be construed as limiting.

Claims

1. A range hood, comprising:

a first housing including a first inlet formed on a lower surface and a damper formed on an upper surface;

a second housing disposed above the first housing to form a space in which the fan module is disposed, and including a second inlet formed on a side surface;

a first sensor disposed in the second housing and configured to detect a contaminant;

A second sensor disposed above the first sensor and configured to detect the contaminant; and

A controller configured to control an output level of the fan module and open or close the damper based on concentration data of the contaminants obtained from the first sensor and the second sensor.

2. The range hood of claim 1, wherein the controller is configured to:

controlling an output level of the fan module based on the first concentration in response to the first concentration of the contaminant obtained from the first sensor being higher than the second concentration of the contaminant obtained from the second sensor, an

And opening the air door in response to the second concentration being higher than a preset concentration.

3. The range hood of claim 1, wherein the controller is configured to:

Controlling an output level of the fan module based on a first concentration of the contaminant obtained from the first sensor in response to operation of the cooking device,

Opening the damper in response to the second concentration of the contaminant obtained from the second sensor being higher than the first concentration during operation of the cooking device, and

An output level of the fan module is controlled based on the magnitude of the second concentration.

4. A range hood according to claim 3, wherein the concentration of the contaminants is classified into a first range, a second range and a third range according to size, and

Wherein the controller is configured to:

In response to the first concentration falling within the first range, controlling an output level of the fan module to a first level,

Controlling the output level of the fan module to a second level in response to the first concentration falling within the second range, and

In response to the first concentration falling within the third range, an output level of the fan module is controlled to a third level.

5. The range hood of claim 4 wherein the controller is configured to: in response to the first concentration belonging to the first range and the second concentration being higher than the first concentration, an output level of the fan module is controlled to the second level or higher.

6. The range hood of claim 4 wherein the controller is configured to:

monitoring the change in the second concentration, and

Responsive to the second concentration falling within the first range, an output level of the fan module is controlled to the first level and the damper is closed.

7. The range hood of claim 1, further comprising a display configured to display the concentration of the contaminants and the output level of the fan module.

8. The range hood of claim 7, wherein the controller is configured to:

Controlling the display to display one of the first sensor or the second sensor based on a comparison between the first concentration and the second concentration,

Controlling the fan module and the damper based on the concentration measured by the displayed sensor, and

Controlling the display to display the output of the fan module and the open state of the damper.

9. The range hood of claim 1, wherein the controller is configured to: in response to the second concentration obtained from the second sensor being higher than a preset concentration, the damper is opened to draw in the contaminant through the first inlet and the second inlet.

10. The range hood of claim 9, wherein the controller is configured to: in response to termination of operation of the cooking device, controlling an output level of the fan module based on a magnitude of the second concentration with the damper open.

11. A range hood, comprising:

A communication module configured to perform wireless communication with an external device equipped with a second sensor for detecting a contaminant; and

A controller configured to control an output level of the fan module and opening or closing of the damper based on concentration data of the contaminants obtained from the first sensor and the second sensor.

12. The range hood of claim 11, wherein the controller is configured to: the communication module is controlled to obtain a first concentration from the first sensor and a second concentration from the external device.

13. The range hood of claim 11, further comprising a display configured to display an operational status of the range hood and to receive user input,

Wherein the controller is configured to: in response to detecting the external device and receiving the user input, an operational state for a connection between the range hood and the external device is indicated.

14. The range hood of claim 13, wherein the communication module is configured to perform wireless communication with a user terminal for controlling the range hood and the external device, and

Wherein the controller is configured to: the communication module is controlled to obtain a second concentration from the external device selected by the user terminal.

15. The range hood of claim 14, wherein the external device comprises an air conditioner, an air purifier, or an air monitor.