CN112664987A

CN112664987A - Smoke exhaust ventilator and smoke exhaust ventilator control method and device

Info

Publication number: CN112664987A
Application number: CN202011519134.6A
Authority: CN
Inventors: 杨华; 覃进武; 张涛; 龚圆杰; 赵保文
Original assignee: Chunmi Technology Shanghai Co Ltd
Current assignee: Chunmi Technology Shanghai Co Ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-04-16

Abstract

The present disclosure relates to a range hood. The range hood comprises a host, a smoke suction module and a push rod structure; the push rod structure comprises a fixed part and a movable part, the fixed part is fixedly connected with the host, and the movable part is fixedly connected with the main smoke baffle; the movable part of the push rod structure is used for moving according to the control of the fixed part and driving the main smoke baffle to rotate by taking the connecting component as a shaft; the movable part is provided with a piezoelectric detection component which is used for detecting the pressure born by the movable part; the movable part is used for driving the main smoke baffle plate to return to a position close to the bottom shell of the smoke collection cavity from a target position according to the control of the fixed part when the pressure is greater than or equal to a preset threshold value. This technical scheme can realize opening and closing of smoke ventilator under the scene that does not set up button or touch screen, has improved the convenience of user operation, has also improved smoke ventilator's life simultaneously, and user experience preferred.

Description

Smoke exhaust ventilator and smoke exhaust ventilator control method and device

Technical Field

The utility model relates to the technical field of intelligent kitchen utensils, in particular to a range hood, a range hood control method and a range hood control device.

Background

Because cooking fumes can cause skin aging, range hoods are a necessity in most homes.

In the related art, the range hood can provide a man-machine interaction mode through a button or a touch screen, and the control of a user on the range hood is realized. But the user is difficult to avoid when culinary art to have greasy dirt or other water stains on hand, when passing through button or touch screen control smoke ventilator, can cause the pollution to this button or touch screen, so can lead to the condition that button or touch screen sensitivity descend for a long time, serious still can lead to button or touch screen to be out of order, reduced smoke ventilator's life.

Disclosure of Invention

In order to overcome the problems in the related art, the embodiment of the disclosure provides a range hood, a range hood control method and a range hood control device. The technical scheme is as follows:

according to a first aspect of the embodiments of the present disclosure, there is provided a range hood, comprising a main machine, a smoking module and a push rod structure;

the main machine is used for generating suction force;

the smoking module comprises a smoke collection cavity bottom shell, a main smoke baffle plate and a connecting assembly, the smoke collection cavity bottom shell is fixedly connected with the host, and the main smoke baffle plate is movably connected with the smoke collection cavity bottom shell through the connecting assembly;

the push rod structure comprises a fixed part and a movable part, the fixed part is fixedly connected with the host, and the movable part is fixedly connected with the main smoke baffle;

the movable part of the push rod structure is used for moving according to the control of the fixed part and driving the main smoke baffle to rotate by taking the connecting component as a shaft, and when the main smoke baffle is driven by the movable part to rotate to a target position from a position close to the bottom shell of the smoke collection cavity, the main smoke baffle and the bottom shell of the smoke collection cavity form an air inlet of the range hood;

the movable part is provided with a piezoelectric detection assembly, and the piezoelectric detection assembly is used for detecting the pressure borne by the movable part; the movable part is used for driving the main smoke baffle plate to return to a position close to the bottom shell of the smoke collection cavity from the target position according to the control of the fixed part when the pressure is greater than or equal to a preset threshold value.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: if a user needs to close the range hood in the cooking process, the main smoke baffle plate of the range hood can be pressed by the parts without stains, such as the back of the hand or the elbows. This smoke ventilator's piezoelectricity detection module can detect the pressure that the gravity of pressing this time and keeping off cigarette board self caused the movable part of push rod structure, when this pressure is greater than or equal to and predetermines the threshold value, this smoke ventilator can shut down and control this owner and keep off the cigarette board and return to the position that is close to collection smoke chamber drain pan from the target location, user operation's convenience has been improved, the control failure's that causes through button or touch screen control smoke ventilator for a long time has also been avoided simultaneously the condition, smoke ventilator's life has been improved, user experience preferred.

In one embodiment, the fixed part of the push rod structure is a push rod motor, and the movable part of the push rod structure is a push rod and a connecting rod;

the front end of the push rod is connected with the push rod motor, the rear end of the push rod is connected with the front end of the connecting rod, and the rear end of the connecting rod is connected with the main smoke baffle;

the push rod motor is fixed on the host computer for drive when opening the push rod removes, the push rod drives the connecting rod removes, the connecting rod drives main cigarette board with coupling assembling rotates as the axle.

In one embodiment, the piezoelectric detection assembly is disposed between the front end and the rear end of the pushrod.

In one embodiment, the piezoelectric detection assembly comprises a piezoelectric material;

the piezoelectric detection component is used for detecting the voltage difference between the voltage of the piezoelectric material close to the front end and the voltage close to the rear end, and determining the pressure born by the movable part according to the voltage difference.

In one embodiment, the range hood further comprises an infrared generator and an infrared receiver;

the infrared generator is used for emitting an infrared measurement signal;

the infrared receiver is used for receiving a reflection measurement signal of the infrared measurement signal after being reflected by an external object, so that the range hood can determine the distance to the external object according to the reflection measurement signal.

In one embodiment, the range hood further comprises an infrared wide-angle camera;

the infrared wide-angle camera is used for measuring the upper end of external object with infrared wide-angle camera line and the lower extreme of external object with contained angle between the infrared wide-angle camera line, so that smoke ventilator basis the contained angle is confirmed whether external object satisfies preset condition.

According to a second aspect of the embodiments of the present disclosure, there is provided a range hood control method applied to the range hood described in any one of the embodiments of the first aspect, the range hood control method including:

when the main smoke baffle of the range hood is positioned at a target position, acquiring the pressure applied on a movable part of a push rod structure by the main smoke baffle of the range hood;

and if the pressure is greater than or equal to a preset threshold value, controlling the main smoke baffle plate to return to a position close to a bottom shell of a smoke collection cavity of the range hood from the target position.

In one embodiment, if the pressure is greater than or equal to a preset threshold, the controlling the main smoke baffle to return from the target position to a position close to a bottom shell of a smoke collection cavity of the range hood includes:

and if the pressure is greater than or equal to a preset threshold value, controlling the range hood to be shut down, and controlling the main smoke baffle plate to return to a position close to a bottom shell of a smoke collection cavity of the range hood from the target position.

In one embodiment, the method comprises:

when determining that an external object approaches, determining whether the external object meets a preset condition;

and when the external object meets a preset condition, controlling the range hood to be opened, and controlling the main smoke baffle plate to rotate to the target position from a position close to a smoke collection cavity bottom shell of the range hood.

In one embodiment, the method comprises:

when the external object does not satisfy the preset condition, alarm information is displayed and used for warning that the external object which does not satisfy the preset condition possibly has dangerous use behaviors for the range hood.

In one embodiment, the controlling the range hood to be opened and the main smoke baffle to rotate from a position close to a bottom shell of a smoke collection cavity of the range hood to the target position when the external object meets a preset condition comprises:

when the external object meets a preset condition, displaying inquiry information so that the external object can determine a required target cooking mode from a plurality of cooking modes provided by the range hood according to the inquiry information;

acquiring confirmation information, wherein the confirmation information comprises a target cooking mode confirmed by the external object;

and controlling the range hood to be opened according to the target cooking mode, and controlling the main smoke baffle plate to rotate to the target position from a position close to a bottom shell of a smoke collection cavity of the range hood.

According to a third aspect of the embodiments of the present disclosure, there is provided a range hood control device provided in the range hood of any one of the embodiments of the first aspect, the range hood control device including:

the pressure acquisition module is used for acquiring the pressure applied to the movable part of the push rod structure by the main smoke baffle plate of the range hood when the main smoke baffle plate of the range hood is positioned at a target position;

and the first control module is used for controlling the main smoke baffle plate to return to a position close to a smoke collection cavity bottom shell of the range hood from the target position if the pressure is greater than or equal to a preset threshold value.

In one embodiment, the first control module comprises:

and the first control submodule is used for controlling the range hood to be shut down and controlling the main smoke baffle plate to return to a position close to the bottom shell of the smoke collection cavity of the range hood from the target position if the pressure is greater than or equal to a preset threshold value.

In one embodiment, the apparatus comprises:

the determining module is used for determining whether an external object meets a preset condition or not when the external object is determined to be close to the device;

and the second control module is used for controlling the range hood to be opened and controlling the main smoke baffle to rotate to the target position from a position close to a smoke collection cavity bottom shell of the range hood when the external object meets a preset condition.

In one embodiment, the apparatus comprises:

and the display module is used for displaying alarm information when the external object does not meet the preset condition, and the alarm information is used for warning that the external object which does not meet the preset condition possibly corresponds to the range hood with dangerous use behaviors.

In one embodiment, the second control module comprises:

the display sub-module is used for displaying inquiry information when the external object meets a preset condition so that the external object can determine a required target cooking mode from a plurality of cooking modes provided by the range hood according to the inquiry information;

the confirmation acquisition submodule is used for acquiring confirmation information, and the confirmation information comprises a target cooking mode confirmed by the external object;

and the second control submodule is used for controlling the range hood to be opened according to the target cooking mode and controlling the main smoke baffle plate to rotate to the target position from a position close to a bottom shell of a smoke collection cavity of the range hood.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural view of a hood according to an exemplary embodiment.

Fig. 2 is a schematic structural view of a putter structure according to an exemplary embodiment.

FIG. 3 is a schematic diagram of a structure of a connecting rod according to an exemplary embodiment.

FIG. 4 is a schematic diagram of a structure of a connecting rod according to an exemplary embodiment.

Fig. 5 is a schematic structural view of a hood according to an exemplary embodiment.

Fig. 6a shows a flow chart of a range hood control method according to an exemplary embodiment.

Fig. 6b shows a flow chart of a range hood control method according to an example embodiment.

Fig. 6c shows a flow chart of a range hood control method according to an example embodiment.

Fig. 6d shows a flow chart of a range hood control method according to an example embodiment.

Fig. 7 shows a flow chart of a range hood control method according to an example embodiment.

Fig. 8a is a schematic structural diagram of a range hood control device according to an exemplary embodiment.

Fig. 8b is a schematic structural diagram of a range hood control device according to an exemplary embodiment.

Fig. 8c is a schematic structural diagram of a range hood control device according to an exemplary embodiment.

Fig. 8d is a schematic structural diagram of a range hood control device according to an exemplary embodiment.

Fig. 8e is a schematic structural diagram of a smoke exhaust ventilator control device according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The embodiment of the present disclosure provides a range hood 10, as shown in fig. 1, the range hood 10 includes a main machine 101, a smoking module 102, and a push rod structure 103.

Wherein the main body 101 is used to generate suction.

The smoking module 102 includes a smoke collecting cavity bottom shell 1021, a main smoke baffle 1022 and a connecting assembly 1023, the smoke collecting cavity bottom shell 1021 is fixedly connected with the host 101, and the main smoke baffle 1022 is movably connected with the smoke collecting cavity bottom shell 1021 through the connecting assembly 1023.

The putter structure 103 includes a fixed portion (not shown in fig. 1) and a movable portion 1032, the fixed portion is fixedly connected to the main body 101, and the movable portion 1032 is fixedly connected to the main smoke barrier 1022.

The movable portion 1032 of the push rod structure 103 is configured to move according to the control of the fixing portion, and drive the main smoke barrier 1022 to rotate around the connecting component 1023, and when the main smoke barrier 1022 rotates to a target position from a position close to the bottom shell 1021 of the smoke collection cavity by the driving of the movable portion 1032, the main smoke barrier 1022 and the bottom shell 1021 of the smoke collection cavity form an air inlet of the range hood 10.

The movable part 1032 is provided with a piezoelectric detection component (not shown in fig. 1) for detecting the pressure to which the movable part 1032 is subjected; the movable portion 1032 is configured to drive the main smoke baffle 1022 to return to a position close to the bottom shell 1021 of the smoke collection cavity from the target position according to the control of the fixing portion when the pressure is greater than or equal to the preset threshold.

For example, the range hood 10 may be disposed right above the kitchen range, and when the user does not cook, the main smoke barrier 1022 is located at an initial position, i.e., a position close to the bottom shell 1021 of the smoke collection cavity, and the air inlet of the range hood 10 is closed. If the user starts to cook, the range hood 10 may instruct the main smoke barrier 1022 to rotate to the target position around the connection component 1023, and instruct the host 101 to start to work, at this time, the main smoke barrier 1022 and the bottom shell 1021 of the smoke collecting cavity constitute an air inlet through which the oil smoke generated by the user's cooking can be sucked.

If it is determined that the range hood needs to be closed after cooking is completed, the user may press the main smoke barrier 1022 of the range hood 10 using a portion where no stain is present, or a portion where stain is less, such as the back of the hand or the elbow. Since the main smoke baffle 1022 is fixedly connected to the movable portion 1032 of the putter structure 103, the force applied to the main smoke baffle 1022 by the user can be transmitted to the movable portion 1032, i.e., the total pressure applied to the movable portion 1032 is the sum of the force applied to the main smoke baffle 1022 by the user and the weight of the main smoke baffle 1022. The piezoelectric detection component can detect the pressure born by the movable part 1032 of the push rod structure 103 in real time, when the pressure is greater than or equal to a preset threshold value, the movable part 1032 can drive the main smoke baffle 1022 to return to the position close to the smoke collection cavity bottom shell 1021 from the target position according to the control of the fixing part, and meanwhile, the range hood is closed, so that the operation of the range hood under the scene without a button or a touch screen is realized.

Optionally, the target position is the position of the main smoke barrier 1022 when the angle between the main smoke barrier 1022 and the bottom shell 1021 of the smoke collecting cavity is 40 ° or 45 °. In practical application, the target position can be adjusted according to the size of the cooker, and the embodiment of the disclosure does not limit the target position.

For example, as shown in fig. 2, the fixed portion of the pusher structure 103 may be a pusher motor 103a, and the movable portion 1032 of the pusher structure 103 may be a pusher 103b and a link (not shown in fig. 2). As shown in fig. 3, the front end 1032a of the push rod 103b is connected to the push rod motor 103a (shown in fig. 2), the rear end 1032b is connected to the front end of the link, and the rear end of the link is connected to the main smoke barrier 1022 (shown in fig. 1). This push rod motor is fixed on host computer 101 for drive push rod 103b when opening and remove, push rod 103b drives the connecting rod and removes, and the connecting rod drives main cigarette board 1022 and uses coupling assembling 1023 to rotate as the axle.

Illustratively, the main smoke barrier 1022 is located adjacent to the bottom shell 1021 when the range hood 10 is not opened. If the user starts to cook and turns on the range hood 10, the range hood 10 controls the operation of the push rod structure, that is, the push rod motor 103a of the fixing part starts to operate, and the push rod motor 103a can control the push rod 103b to move in an extending manner. The push rod 103b is fixed at a certain angle with the connecting rod, so that the connecting rod can push the main smoke barrier 1022 along with the extending movement of the push rod 103b, so that the main smoke barrier 1022 moves from a position close to the bottom shell 1021 of the smoke collection cavity to the target position, thereby forming an air inlet. If the user finishes cooking, the main smoke barrier 1022 may be pressed by a portion without stains on the back of the hand or on the elbow, or with less stains, and at this time, the piezoelectric detection component detects that the pressure borne by the movable portion 1032 of the push rod structure is greater than or equal to the preset threshold, the range hood 10 may be closed, and at this time, the push rod motor 103a of the fixed portion starts to operate, and the push rod motor 103a may control the push rod 103b to move in a retracting manner. With the retraction of the push rod 103b, the link rod pulls the main smoke barrier 1022, so that the main smoke barrier 1022 returns from the target position to a position close to the bottom shell 1021 of the smoke collecting cavity.

Alternatively, the range hood 10 may be provided with a plurality of push rod structures.

For example, as shown in fig. 4, the piezoelectric detecting element 1032c may be disposed between the front end 1032a and the rear end 1032b of the push rod 103b, or the piezoelectric detecting element 1032c may be disposed between the front end and the rear end of the link. Optionally, the piezoelectric detection component 1032a includes a piezoelectric material, and the piezoelectric detection component 1032a is configured to detect a voltage difference between a voltage near the front end and a voltage near the rear end of the piezoelectric material, and determine the pressure applied to the movable portion 1032 according to the voltage difference.

Since the piezoelectric material can generate a voltage across the piezoelectric material when the piezoelectric material is under pressure, and the generated voltage is proportional to the pressure, the piezoelectric detection component 1032c can determine the pressure applied to the piezoelectric material by detecting the voltage across the piezoelectric material, i.e. the pressure applied to the movable portion 1032 of the putter structure 103. Specifically, the two ends of the piezoelectric material are the end of the piezoelectric material near the front end 1032a of the pushrod 103b and the end near the rear end 1032b of the pushrod 103 b.

Specifically, when the main smoke barrier 1022 is at the initial position, i.e., the position close to the bottom shell 1021 of the smoke collection cavity, the movable portion 1032 of the push rod structure 103 is not stressed, and the voltage across the piezoelectric material is 0; when the main smoke barrier 1022 is opened, i.e., rotated to the target position, the movable portion 1032 of the putter structure 103 bears the weight of the main smoke barrier 1022, and the voltage across the piezoelectric material is V0; if the user presses the main smoke barrier 1022 (the pressing force may be small, for example, 5N (newton)), the movable portion 1032 of the putter structure 103 receives the weight of the main smoke barrier 1022 and the pressure applied by the user, and the voltage across the piezoelectric material is V0+ Δ V. If the piezoelectric detecting element 1032c detects that the voltage V0+ Δ V is greater than or equal to the predetermined voltage threshold, it indicates that the pressure applied to the movable portion 1032 of the push rod structure 103 is greater than or equal to the predetermined threshold, at this time, the range hood 10 may be closed, and the movable portion 1032 of the push rod structure 103 may drive the main smoke barrier 1022 to return to the position close to the bottom shell 1021 of the smoke collecting cavity according to the control of the fixing portion.

Optionally, the range hood 10 is further provided with an electric control box, and the control of each component can be realized through the electric control box.

Optionally, the range hood 10 is further provided with a fan system, an air outlet pipe, a first lamp strip and a second lamp strip. The fan system is arranged inside the main machine 101 and used for generating suction; the air outlet and the air outlet pipe are sequentially arranged at the outlet of the fan system; the first light strip is mounted at the bottom of the housing of the host 101, for example, may be disposed beside the speaker 20; the second light strip is installed on one side of the main smoke-blocking plate 1022 close to the smoke-collecting cavity bottom shell 1021.

Optionally, the oil net of the range hood 10 is disposed at the air inlet of the bottom shell 1021 of the smoke collection cavity.

Optionally, the range hood 10 is further provided with two side smoke baffles for closing two other open ends of the three open ends formed by the bottom shell 1021 of the smoke collection cavity and the main smoke baffle 1022, except for the air inlet facing the kitchen range, so as to increase the negative pressure of the air inlet.

Optionally, if the range hood 10 is powered on for standby, the main smoke barrier 1022 is in a closed state, the first light strip is turned on, and the second light strip is turned off. After the user turns on the range hood 10, the fan system starts to work, and simultaneously the push rod motor 103a pushes the main smoke barrier 1022 to rotate to a target position, for example, to a position of 45 ° with the bottom casing 1021 of the smoke collection cavity, through the push rod 103b and the connecting rod, and then the second light strip is turned on, at this time, the oil smoke can be discharged out of the room through the fan system from the air inlet. When the range hood 10 is turned off, the fan system and the second light strip are turned off, at this time, the push rod motor 103a pushes the main smoke barrier 1022 to return to the initial position from the target position through the push rod 103b and the connecting rod, and finally, the first light strip is turned off.

In the technical solution provided in the embodiment of the present disclosure, if a user needs to close the range hood 10 during cooking, the main smoke barrier 1022 of the range hood 10 may be pressed by a portion without stains, such as a back of a hand or an elbow. This smoke ventilator 10's piezoelectricity detection element 1032a can detect the pressure that is caused to the movable part 1032 of putter structure 103 by this time pressing and the gravity of main smoke baffle 1022 self, when this pressure is greater than or equal to and predetermines the threshold value, this smoke ventilator 10 can shut down and control this main smoke baffle 1022 and return to the position that is close to collection smoke chamber drain pan 1021 from the target location, the convenience of user operation has been improved, the control failure's condition that also avoided simultaneously causing through button or touch screen control smoke ventilator 10 for a long time, the life of smoke ventilator 10 has been improved, user experience preferred.

In one embodiment, range hood 10 further includes an infrared generator 104 and an infrared receiver 105.

Wherein the infrared generator 104 is configured to emit an infrared measurement signal.

The infrared receiver 105 is configured to receive a reflection measurement signal of the infrared measurement signal reflected by an external object, so that the range hood 10 determines a distance to the external object according to the reflection measurement signal. The external object may be a user, a robot capable of cooking, or another object, which is not limited in this disclosure.

For example, as shown in FIG. 5, the infrared generator 104 and the infrared receiver 105 may be disposed on a side of the main smoke barrier 1022 remote from the smoke collection chamber base 1021. When the range hood 10 is in the closed state, i.e., the main smoke barrier 1022 is located near the bottom shell 1021 of the smoke collecting cavity, the infrared generator 104 and the infrared receiver 105 are in the open state, i.e., the infrared generator 104 continuously emits the infrared measurement signal. If there is a user approaching, the user will reflect the infrared measurement signal to form a reflection measurement signal, and the infrared receiver 105 can receive the reflection measurement signal.

When it is determined that the infrared receiver 105 receives the reflection measurement signal, the range hood 10 can determine that a user is currently approaching, and at this time, the range hood 10 can determine the distance to the user according to the reflection measurement signal. If the distance is less than or equal to the predetermined distance threshold, indicating that the user may currently need to cook, the range hood 10 may query the user whether cooking is needed. Specifically, referring to fig. 5, the range hood 10 may further include a speaker 20, and the speaker 20 is disposed in a connection area between the main unit 101 and the smoking module 102. Upon determining that the distance to the user is less than or equal to the preset distance threshold, the hood 10 may play a first query message, for example, a voice asking whether cooking is required, through the speaker 20. After the user hears the first inquiry information, the user can send out confirmation information. Specifically, referring to fig. 5, the range hood 10 may further be provided with a microphone 30, and after the first query message is played through the speaker 20, the range hood 10 may instruct the microphone 30 to turn on to receive a voice command of the user. That is, after the user hears the first query message, the user may send out a confirmation message by voice, for example, the user may say "yes". After receiving the voice instruction, the range hood 10 may query the user's cooking mode again, that is, the range hood 10 may play a second query message through the speaker 20, for example, play a voice of "please confirm the cooking mode". After listening to the second query message, the user may send a confirmation message by voice, for example, the user may say "pan mode". After receiving the voice command, the range hood 10 can be turned on to the stir-fry mode.

Specifically, the range hood 10 can provide three working modes, namely a small air volume mode, a common cooking mode and a quick-frying mode, wherein the air volume provided by the main unit 101 in the three working modes is 15m³Per min (cubic meter per minute) 18m³Min and 22m³/min。

In one embodiment, referring to fig. 5, range hood 10 also includes an infrared wide-angle camera 106. This infrared wide angle camera 106 is used for measuring the upper end of external object and the line of infrared wide angle camera 106 and the contained angle between the lower extreme of external object and the line of infrared wide angle camera 106 to whether smoke ventilator 10 satisfies the preset condition according to the contained angle determination external object. The preset condition may be whether the height of the external object meets a preset height requirement, or whether the external object is a preset type of user, such as an adult, a female, or a male.

For example, upon determining that a user is currently approaching, range hood 10 may instruct infrared wide-angle camera 106 to turn on. This infrared wide angle camera 106 can measure the user's head and the contained angle between infrared wide angle camera 106 line and the user's foot and the infrared wide angle camera 106 line, and this contained angle is big more the higher the height of user. To avoid dangerous cooking behavior by children without adult supervision, when it is determined that a user is approaching, it may be determined whether the user is an adult. Specifically, if the angle α is less than or equal to arctan (H/L), it may be determined that the approaching person is a child, and the approaching person is an adult, where L is a distance between the user and the range hood 10, and H is a height of a normal child, for example, the height H of the child is generally 1.2m (meter) to 1.5m, and an average value may be taken to be 1.4 m.

If it is determined that the user is an adult, range hood 10 may query the user whether cooking is desired. Specifically, the hood 10 may play the first query message, for example, play a voice of "asking whether or not cooking is required" through the speaker 20. After the user hears the first inquiry information, the user can send out confirmation information. Specifically, after the user hears the first query message, the user may send a confirmation message by voice, for example, the user may say "yes". After receiving the voice instruction, the range hood 10 may query the user's cooking mode again, that is, the range hood 10 may play a second query message through the speaker 20, for example, play a voice of "please confirm the cooking mode". After listening to the second query message, the user may send a confirmation message by voice, for example, the user may say "pan mode". After receiving the voice command, the range hood 10 can be turned on to the stir-fry mode.

The embodiment of the disclosure provides a range hood, can realize opening and closing of range hood under the scene that does not set up button or touch screen, improve the convenience of user operation, also avoided the control malfunctioning condition that long-term through button or touch screen control range hood 10 caused simultaneously, improved range hood 10's life, user experience preferred.

Fig. 6a is a flow chart illustrating a range hood control method according to an exemplary embodiment, which is applied to the range hood according to any one of the above embodiments. As shown in fig. 6a, the range hood control method includes the following steps 601 and 602:

in step 601, when the main smoke barrier of the range hood is located at the target position, the pressure applied by the main smoke barrier of the range hood on the movable part of the push rod structure is obtained.

In step 602, if the pressure is greater than or equal to a predetermined threshold, the main smoke barrier is controlled to return from the target position to a position close to a bottom shell of the smoke collection chamber of the range hood.

The smoke exhaust ventilator can be arranged right above the kitchen range, when a user does not cook, the main smoke baffle plate of the smoke exhaust ventilator is located at the initial position, namely, the position close to the bottom shell of the smoke collection cavity of the smoke exhaust ventilator, and the air inlet of the smoke exhaust ventilator is closed. If the user begins to cook, then smoke ventilator instructs the main smoke baffle to rotate to the target position, and this time this main smoke baffle constitutes the air intake with its collection smoke chamber drain pan, and the oil smoke that the user cooks and produces can be removed through this air intake.

If the cooking is finished and the range hood needs to be closed, the user can press the main smoke baffle plate of the range hood by using a part without stains such as the back of a hand or an elbow or the like or a part with less stains. Because this main cigarette board that keeps off is connected with the movable part fixed connection of smoke ventilator's push rod structure, therefore the user exerts the power that keeps off the cigarette board at this main can transmit to this movable part, and this total pressure that this movable part bore is the user and exerts the total sum at the power of this main cigarette board and the gravity of this main cigarette board promptly. The smoke ventilator can detect the pressure born by the movable part of the push rod structure in real time when being opened, when the pressure is greater than or equal to a preset threshold value, the fixed part of the push rod structure is controlled to be opened, and at the moment, the movable part of the rod structure can drive the main smoke baffle plate to return to the position close to the bottom shell of the smoke collecting cavity from the target position according to the control of the fixed part.

Optionally, if the user suddenly cuts off power during cooking, the main unit of the range hood stops working at this time, but the main smoke baffle is still located at the target position, and in order to complete the storage of the main smoke baffle, the user can press the main smoke baffle of the range hood. Although this smoke ventilator has been cut off the power supply, can be provided with the power of little volume in this smoke ventilator, this power can provide the storage that the electric quantity realized main cigarette board for smoke ventilator after the outage. The pressure that smoke ventilator can detect the movable part of push rod structure under the condition that this power provided the electric quantity bore to when detecting this pressure and being greater than or equal to and predetermineeing the threshold value, the fixed part of control this push rod structure is opened, and the movable part of this rod structure can drive the main cigarette board of keeping off according to the control of fixed part this moment and return to the position that is close to collection smoke chamber drain pan from the target position.

Optionally, when the range hood detects that the pressure borne by the movable portion of the push rod structure is greater than or equal to a preset threshold value, the fixed portion of the push rod structure can be controlled to be opened, at the moment, the movable portion of the rod structure can drive the main smoke baffle to return to a position close to the bottom shell of the smoke collection cavity from a target position according to the control of the fixed portion, and meanwhile, the range hood is controlled to be shut down, namely, the main machine of the range hood is controlled to stop working.

In one embodiment, as shown in fig. 6b, the method comprises steps 603 and 604:

in step 603, when it is determined that an external object is close to, it is determined whether the external object satisfies a preset condition.

In step 604, when the external object meets a preset condition, the range hood is controlled to be opened, and the main smoke baffle is controlled to rotate to the target position from a position close to a bottom shell of a smoke collection cavity of the range hood.

Optionally, the external object may be a user, a robot capable of cooking, or another object, which is not limited in this disclosure. The preset condition may be whether the distance between the external object and the range hood meets a preset distance requirement, or whether the height of the external object meets a preset height requirement, or whether the external object is a user of a preset type, such as an adult, a female, or a male.

By way of example, the range hood may be provided with an infrared generator and an infrared receiver. When this smoke ventilator is in the closed condition, and main cigarette board that keeps off is located the position that is close to this collection smoke chamber drain pan promptly, infrared generator and infrared receiver are in the open mode, and infrared generator continuously transmits infrared measuring signal promptly. If a user approaches the mobile terminal, the user reflects the infrared measurement signal to form a reflection measurement signal, and the infrared receiver can receive the reflection measurement signal.

When the infrared receiver is determined to receive the reflection measurement signal, the range hood can determine that a user approaches the range hood, and at the moment, the range hood can determine the distance between the range hood and the user according to the reflection measurement signal. If the distance is smaller than or equal to the preset distance threshold, it is indicated that the user may need to cook currently, at this time, the range hood may be opened, and the main smoke blocking plate is controlled to rotate to the target position from a position close to the bottom shell of the smoke collection cavity of the range hood. If the distance is larger than the preset distance threshold, the user does not need to cook at present, and the range hood can keep the current state unchanged.

Or the range hood can also be provided with an infrared wide-angle camera. When it is determined that a user is currently approaching, the range hood can instruct the infrared wide-angle camera to turn on. This infrared wide-angle camera can measure the user's head and the contained angle between infrared wide-angle camera line and user's foot and the infrared wide-angle camera line, and user's height is higher this contained angle is big more, and then smoke ventilator can obtain this user's height according to the distance with the user and this contained angle. If the height of the user is larger than or equal to the preset height threshold value, the height of the user is enough to meet the requirement of cooking on the height, the range hood can be opened at the moment, and the main smoke blocking plate is controlled to rotate to the target position from the position close to the bottom shell of the smoke collecting cavity of the range hood. If the height of the user is smaller than the preset height threshold value, the height of the user is lower and is not enough to meet the requirement of cooking on the height, and the range hood can keep the current state unchanged.

Alternatively, to avoid dangerous cooking behavior by children without adult supervision, when it is determined that a user is approaching, it may be determined whether the user is an adult. Specifically, if the angle α is less than or equal to arctan (H/L), it may be determined that the approaching person is a child, and the approaching person is an adult, where L is a distance between the user and the range hood 10, and H is a height of a normal child, for example, the height H of the child is generally 1.2m (meter) to 1.5m, and an average value may be taken to be 1.4 m. After the range hood acquires the included angle and the distance, L may be substituted into the above formula, i.e., it is determined whether the included angle a is less than or equal to arctan (H/L). If yes, the user is a child, and the range hood can be prohibited from being opened for safety; if not, the user is an adult, and the range hood can be opened at the moment, and the main smoke baffle plate is controlled to rotate to the target position from the position close to the bottom shell of the smoke collection cavity of the range hood.

In one embodiment, as shown in fig. 6c, the method comprises step 605:

in step 605, when the external object does not satisfy the preset condition, alarm information is displayed, and the alarm information is used for warning that the external object which does not satisfy the preset condition may have dangerous use behaviors for the range hood.

For example, if the user does not satisfy the preset condition, it is indicated that the user may be dangerous when cooking, and therefore the range hood may display alarm information, for example, alarm music or alarm voice information may be played through a speaker provided in the range hood. Specifically, if user's height is less than and predetermines the height threshold value, show that this user's height is lower, be not enough to satisfy the requirement of culinary art to the height, in order to avoid this user to use smoke ventilator privately under the condition that other members are unknown at home this moment, this smoke ventilator can report to the police music or warning voice message etc. through speaker broadcast, and other members in the suggestion home look over.

Or, if the user is a child, in order to avoid the child from using the range hood privately under the condition of no adult supervision, the range hood can play alarm music or alarm voice information and the like through the loudspeaker to prompt the adult to check or supervise.

In one embodiment, as shown in fig. 6d, step 604, namely controlling the range hood to be opened and controlling the main smoke barrier to rotate from a position close to the bottom shell of the smoke collecting cavity of the range hood to the target position when the external object meets the preset condition, can be implemented through steps 6041 to 6043:

in step 6041, when the external object satisfies a preset condition, query information is presented so that the external object determines a desired target cooking mode from a plurality of cooking modes provided by the range hood according to the query information.

In step 6042, confirmation information including the target cooking mode confirmed by the external object is acquired.

In step 6043, according to the target cooking mode, the range hood is controlled to be opened, and the main smoke barrier is controlled to rotate from a position close to a bottom shell of a smoke collection cavity of the range hood to the target position.

For example, if the range hood determines that the user currently approaching meets the preset condition, the user may be first asked whether cooking is required. Specifically, the range hood may play the first query message through the speaker, for example, play a voice of "asking whether to ask for cooking". After the user hears the first inquiry information, the user can send out confirmation information. Specifically, after the first query message is played through the speaker, the range hood may instruct the microphone set therein to turn on, and receive a voice command of the user. After the user hears the first query message, the user may send a confirmation message by voice, for example, the user may say "yes". After receiving the voice instruction, the range hood may query the user's cooking mode again, that is, the range hood may play second query information through the speaker, for example, play a voice of "please select a mode that you need from a small air volume mode, a normal cooking mode, and a stir-fry mode". After listening to the second query message, the user may send a confirmation message by voice, for example, the user may say "pan mode". After the smoke exhaust ventilator receives the voice command, the smoke exhaust ventilator can be opened to a stir-frying mode, and the main smoke baffle plate is controlled to rotate to the target position from a position close to the bottom shell of the smoke collection cavity of the smoke exhaust ventilator.

The embodiment of the disclosure provides a range hood control method, which can realize the opening and closing of a range hood in a scene that the range hood is not provided with a button or a touch screen, improves the convenience of user operation, and meanwhile, avoids the control failure condition caused by long-term button or touch screen control of the range hood, prolongs the service life of the range hood, and ensures better user experience.

The implementation is described in detail below by way of several embodiments.

Fig. 7 is a flowchart illustrating a range hood control method according to an exemplary embodiment, where the execution main body is a range hood, as shown in fig. 7, including the following steps 701 to 701:

in step 701, a post power on self test.

The range hood detects whether each module or part normally works after being electrified. An alarm if there is a module or component that is not working frequently; and entering a standby state if all the modules or parts work normally.

In step 702, detecting whether a user approaching currently exists; if yes, go to step 703; if not, go to step 702.

In step 703, determining whether the user meets a preset condition; if not, go to step 704; if yes, go to step 705.

In step 704, alarm information is displayed, and the alarm information is used for warning that the user who does not meet the preset condition may have dangerous use behaviors for the range hood.

Here, it may also be determined whether the user leaves, and if so, the alarm information is stopped being displayed, and step 702 is continuously executed; if not, the alarm information is continuously displayed.

In step 705, first query information is presented, which is used to query the user whether cooking is required.

In step 706, acquiring first confirmation information and determining whether the first confirmation information indicates that the user needs to cook; if yes, go to step 707; if not, go to step 702.

In step 707, second query information is presented, which is used to query the cooking mode selected by the user.

In step 708, second confirmation information is acquired, which indicates that the user selects the target cooking mode.

In step 709, the cooking device is turned on according to the target cooking mode, and the main smoke barrier is controlled to move from a position close to the bottom shell of the smoke collection cavity to a target position to form an air inlet.

In the working process of the range hood, whether a gear shifting instruction is received or not can be determined in real time, and if the gear shifting instruction is received, the cooking mode can be changed according to the instruction of the gear shifting instruction.

Or, in the working process of the range hood, whether a shutdown instruction is received or not can be determined in real time, and if the shutdown instruction is received, the range hood can be shut down and the main smoke baffle plate is controlled to rotate to a position close to the bottom shell of the smoke collection cavity from the target position.

In step 710, detecting whether the pressure applied to the movable portion of the push rod structure is greater than or equal to a preset pressure threshold; if yes, go to step 711; if not, the current state is kept unchanged.

In step 711, the machine is turned off and the main smoke barrier is controlled to rotate from the target position to a position adjacent to the bottom shell of the smoke collection chamber.

The following are embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods.

Fig. 8a is a schematic diagram illustrating a structure of a range hood control device 80 according to an exemplary embodiment, where the device 80 can be implemented as part or all of an electronic device through software, hardware or a combination of both. As shown in fig. 8a, the range hood control device 80 includes a pressure acquisition module 801 and a first control module 802.

The pressure obtaining module 801 is configured to obtain a pressure applied by a main smoke barrier of the range hood on a movable portion of the push rod structure when the main smoke barrier is located at a target position.

The first control module 802 is configured to control the main smoke baffle to return to a position close to a bottom shell of a smoke collection cavity of the range hood from the target position if the pressure is greater than or equal to a preset threshold value.

In one embodiment, as shown in fig. 8b, the first control module 802 includes a first control submodule 8021, and the first control submodule 8021 is configured to control the range hood to shut down and control the main smoke baffle to return to a position close to a bottom shell of a smoke collecting cavity of the range hood from the target position if the pressure is greater than or equal to a preset threshold value.

In one embodiment, as shown in FIG. 8c, the apparatus 80 includes a determination module 803 and a second control module 804.

The determining module 803 is configured to determine whether an external object meets a preset condition when it is determined that the external object is close to the external object.

And the second control module 804 is configured to control the range hood to be opened and control the main smoke baffle to rotate to the target position from a position close to a bottom shell of a smoke collection cavity of the range hood when the external object meets a preset condition.

In one embodiment, as shown in fig. 8d, the device 80 includes a display module 805, where the display module 805 is configured to display an alarm message when the external object does not satisfy the preset condition, where the alarm message is used to warn that the external object that does not satisfy the preset condition may have a dangerous use behavior for the range hood.

In one embodiment, as shown in fig. 8e, the second control module 804 includes a presentation sub-module 8041, a confirmation acquisition sub-module 8042, and a second control sub-module 8043.

The displaying submodule 8041 is configured to display inquiry information when the external object meets a preset condition, so that the external object determines a required target cooking mode from a plurality of cooking modes provided by the range hood according to the inquiry information.

The confirmation acquisition sub-module 8042 is configured to acquire confirmation information, where the confirmation information includes a target cooking mode confirmed by the external object.

And the second control submodule 8043 is configured to control the range hood to be opened according to the target cooking mode, and control the main smoke blocking plate to rotate to the target position from a position close to a bottom shell of a smoke collection cavity of the range hood.

The embodiment of the disclosure provides a smoke ventilator control device, and the device can realize opening and closing of smoke ventilator under the scene that smoke ventilator does not set up button or touch screen, has improved the convenience of user operation, has also avoided the control malfunctioning condition that long-term through button or touch screen control smoke ventilator caused simultaneously, has improved smoke ventilator's life, and user experience preferred.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A range hood is characterized by comprising a main machine, a smoke suction module and a push rod structure;

the main machine is used for generating suction force;

2. The range hood of claim 1, wherein the fixed portion of the push rod structure is a push rod motor, and the movable portion of the push rod structure is a push rod and a connecting rod;

3. The range hood of claim 2, wherein the piezoelectric detection assembly is disposed between the front end and the rear end of the pushrod.

4. The range hood of claim 3, wherein the piezoelectric detection assembly comprises a piezoelectric material;

5. The range hood of any one of claims 1 to 4, further comprising an infrared generator and an infrared receiver;

the infrared generator is used for emitting an infrared measurement signal;

6. The range hood of claim 5, further comprising an infrared wide angle camera;

7. A range hood control method applied to the range hood of any one of claims 1 to 6, the range hood control method comprising:

8. The method of claim 7, wherein said controlling the return of the primary smoke barrier from the target position to a position proximate to a bottom shell of the smoke collection chamber of the range hood if the pressure is greater than or equal to a predetermined threshold comprises:

9. The method according to claim 7 or 8, characterized in that the method comprises:

10. The method of claim 9, wherein the method comprises:

11. The method of claim 9, wherein controlling the range hood to open and the primary smoke barrier to rotate from a position proximate to a smoke collection chamber bottom shell of the range hood to the target position when the external object satisfies a preset condition comprises:

12. A range hood control device provided in the range hood of any one of claims 1 to 6, the range hood control device comprising:

13. The apparatus of claim 12, wherein the first control module comprises:

14. The apparatus according to claim 12 or 13, characterized in that it comprises:

15. The apparatus of claim 14, wherein the apparatus comprises:

16. The apparatus of claim 14, wherein the second control module comprises: