Method for controlling the shutdown of a domestic appliance and extractor hood

Abstract

The application relates to the technical field of household appliances, and provides a household appliance shutdown control method and a range hood, the household appliance shutdown control method comprising the following steps: in a distance measuring range, a distance signal of a to-be-detected object staying in a preset time is acquired; a corresponding shutdown delay time is matched according to the distance signal; and when the shutdown delay time arrives, a main machine of the household appliance is controlled to be turned off. According to the distance signal, the corresponding shutdown delay time is matched, the main machine of the range hood can be automatically controlled to be turned off according to the actual needs of a user, the hand of the user can be directly avoided from contacting the household appliance, the shutdown delay time key does not need to be touched, and the problem of poor user experience is avoided. In addition, the user can set the time for the timing shutdown according to needs, and waste is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a shutdown control method of a household appliance and a range hood. BACKGROUND

[0002] After use, a household appliance needs to be turned off. The household appliance can be an air conditioner, a dehumidifier, a television, etc. Generally, a button or a key is arranged on the household appliance to turn off the main machine. In some cases, for example, when hands are not available or are wet, the household appliance needs to be turned off with a delay, thus it is inconvenient to turn off the household appliance immediately, which causes certain troubles to the user.

[0003] In the related prior art, the way to solve the delay time of turning off the household appliance is to set a fixed time in the circuit chip in advance, and when the fixed time set in advance is met, the main machine of the household appliance can be automatically turned off, and the user cannot set the time for turning off the household appliance with a delay, which results in poor practicability. SUMMARY

[0004] Therefore, the present application provides a range hood to solve the problem that the household appliance cannot be turned off with a delay according to the needs of the user in the prior art.

[0005] In one aspect, the present application provides a shutdown control method of a household appliance, which comprises:

[0006] acquiring a distance signal of a to-be-detected object staying within a preset time in a distance measuring range;

[0007] matching a corresponding delay time for turning off the household appliance according to the distance signal;

[0008] controlling the main machine of the household appliance to be turned off when the delay time for turning off the household appliance arrives.

[0009] The present application has the following beneficial effects. By judging whether the staying time of the to-be-detected object is greater than or equal to the preset time, some misoperations can be avoided. The delay time for turning off the household appliance is matched according to the distance signal, so that the delay time for turning off the household appliance can be adjusted according to the distance between the to-be-detected object and the distance measuring device, and manual adjustment is not needed, which can avoid the inconvenience of manually turning off the household appliance, or the problem that the user is easily electrocuted when touching the key with wet hands. The distance signal of the to-be-detected object staying within the preset time in the distance measuring range is acquired, so that the main machine of the household appliance can be automatically controlled to be turned off according to the actual needs of the user, and the user's hand can be prevented from directly contacting the household appliance, so that the user does not need to touch the delay turning-off key, and the user experience is improved. In addition, the user can set the time for turning off the household appliance with a delay according to the needs, and waste is avoided.

[0010] In an alternative embodiment, the delay time of the shutdown is displayed before the delay time of the shutdown arrives.

[0011] The advantage is that when the distance signal is matched to the corresponding delay time of the shutdown, the delay time of the shutdown can be displayed. By displaying the delay time of the shutdown before the delay time of the shutdown arrives, the target time can be adjusted in time.

[0012] In an alternative embodiment, the delay time of the shutdown is displayed before the delay time of the shutdown arrives.

[0013] In an alternative embodiment, the distance of the object to be detected is adjusted before the delay time of the shutdown arrives until the delay time of the shutdown meets the target time.

[0014] The advantage is that by displaying the countdown time on the display screen of the receiving terminal, the remaining time can be observed intuitively, and the target time can be adjusted conveniently.

[0015] In an alternative embodiment, within the ranging range, a plurality of distance segments are divided, each distance segment corresponds to a delay time of the shutdown, and the starting position of each distance segment is the ranging device for detecting the distance signal.

[0016] The advantage is that in this way, the distance can be measured more conveniently, for example, when the object to be detected is a hand, the distance between the hand and the ranging device is far, and the corresponding distance is long, and vice versa.

[0017] On the other hand, the present application also provides an extractor hood, which comprises a fan system, and the extractor hood controls the fan system to be closed by using the shutdown control method of the household appliance.

[0018] Since the above-mentioned extractor hood uses the above-mentioned shutdown control method of the household appliance, the extractor hood has all the advantages of the above-mentioned shutdown control method of the household appliance, which will not be repeated here.

[0019] In an alternative embodiment, the extractor hood comprises a housing, a ranging device arranged on the housing, the ranging device is adapted to detect the distance of the object to be detected when the object to be detected stays for a preset time within a ranging range, and send a distance signal, a controller is in communication connection with the ranging device, the controller acquires the distance signal sent by the ranging device, the controller matches the corresponding delay time of the shutdown according to the distance signal, and controls the main machine of the extractor hood to be closed when the delay time of the shutdown arrives.

[0020] The beneficial technical effect is that by judging that the staying time of the to-be-detected object is greater than or equal to the preset time, the problem of misoperation can be avoided. According to the matching of the distance signal and the corresponding shutdown delay time, the shutdown delay time can be adjusted according to the distance between the to-be-detected object and the distance measuring device, and manual adjustment is not required, thereby avoiding the problem that when cooking, the hands are covered with a lot of oil stains, but the accurate shutdown delay time of the range hood needs to be set. By obtaining the distance signal of the to-be-detected object staying within the preset time in the distance measuring range, the main machine of the range hood can be automatically controlled to be turned off according to the actual needs of the user, and direct contact of the hands with the range hood can also be avoided, so that the user does not need to touch the delay shutdown button, and the problem of poor user experience caused by dirt on the button area is avoided. In addition, the user can set the timing shutdown time as needed, without causing waste.

[0021] In an optional embodiment, the distance measuring device is arranged on the side of the machine shell.

[0022] The beneficial effect is that by arranging the distance measuring device on the side of the machine shell, the distance measuring device can be triggered when the user is cooking or walking, thereby avoiding misoperation. In order to prevent the occurrence of a high-probability mis-triggering event, the distance measuring device is arranged on the side of the machine shell according to the installation position of the range hood and the user's usage habit, for example, the distance measuring device is installed on the left side or the right side of the machine shell, or one distance measuring device is installed on each side of the machine shell, which can be used in different scenarios and user groups, and can avoid misoperation. By arranging the distance measuring device on the side of the machine shell, the pollution of oil fumes or water vapor to the distance measuring device can also be effectively reduced.

[0023] In an optional embodiment, the distance measuring device is detachably connected to the machine shell, so that the user can better adjust the installation position of the distance measuring device according to the actual use condition or usage habit, thereby improving the user's experience.

[0024] In an optional embodiment, the range hood further comprises a receiving terminal arranged on the machine shell, and the receiving terminal is in communication connection with the controller to display the shutdown delay time.

[0025] The beneficial effect is that the shutdown delay time can be displayed on the receiving terminal, so that the user can intuitively observe the shutdown delay time. When the displayed shutdown delay time is not the target time desired by the user, the user can again place the to-be-detected object in the distance measuring range of the distance measuring device until the shutdown delay time displayed on the receiving terminal is consistent with the target time, and then the user removes the to-be-detected object from the distance measuring range. The controller can determine the shutdown delay time, and when the shutdown delay time arrives, the controller controls the main machine of the range hood to be turned off.

[0026] In an alternative embodiment, the distance measuring device is an infrared distance measuring sensor.

[0027] The beneficial effect is that a beam of infrared light is emitted by the infrared distance measuring sensor, a reflection is formed after the beam of infrared light is irradiated onto the object, a signal is received after the reflection is received by the sensor, and the time difference between the emission and the reception of the signal is received by the CCD image processing, and the distance of the object is calculated after the signal processor processes the data, so that the distance is converted into the set time length. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0029] Figure 1 A flow chart of a power-off control method of a household appliance according to an embodiment of the present application;

[0030] Figure 2 A flow chart of a power-off control method of a household appliance according to another embodiment of the present application;

[0031] Figure 3 A correspondence diagram of distance and delay time of power-off of a power-off control method of a household appliance according to an embodiment of the present application;

[0032] Figure 4 A control logic diagram of a power-off control method of a household appliance according to an embodiment of the present application;

[0033] Figure 5 A perspective structural schematic diagram of a range hood according to an embodiment of the present application;

[0034] Figure 6 A perspective structural schematic diagram of another range hood according to an embodiment of the present application;

[0035] Figure 7 A front view structural schematic diagram of a range hood according to an embodiment of the present application.

[0036] Explanation of reference signs:

[0037] 10, range hood;

[0038] 11, casing; 111, panel;

[0039] 12, distance measuring device;

[0040] 13, receiving terminal;

[0041] 14, oil cup; 141, handhold;

[0042] 15, controller;

[0043] 16, wireless transmission module. DETAILED DESCRIPTION

[0044] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0045] SUMMARY

[0046] The range hood, also known as the fume extractor or the smoke extractor, is a kind of kitchen household appliance for purifying the kitchen environment. Its function is to quickly extract and discharge the waste of the stove combustion and the oil fume harmful to human body generated in the cooking process, and to purify the air.

[0047] When the user uses the range hood, it is usually in the state of cooking. When cooking, the hands are full of oil stains, and the accurate shutdown delay time of the range hood needs to be set. When cooking, the hands will be full of oil stains, or the hands will hold a spatula, a strainer, a bowl and other tableware or kitchen utensils. Therefore, if a button, a knob or a button structure is arranged on the range hood to adjust the shutdown delay time, the user will also be inconvenient to use, and the user experience will also be poor.

[0048] The embodiments of the present application will be described below in combination with Figures 1 to 7 .

[0049] As shown in Figure 1 , according to the embodiments of the present application, on the one hand, a shutdown control method of a household appliance is provided, and the shutdown control method of the household appliance comprises the following steps:

[0050] Step S101: In a distance measuring range, a distance signal of a to-be-detected object staying in a preset time is acquired.

[0051] Step S103: According to the distance signal, a corresponding shutdown delay time is matched.

[0052] Step S105: When the shutdown delay time comes, the main machine of the range hood 10 is controlled to be turned off.

[0053] By judging whether the staying time of the object to be detected is greater than or equal to the preset time, it can be avoided that some misoperations, for example, if only entering the ranging range by not paying attention. Therefore, when the staying time of the object to be detected is greater than or equal to the preset time, it indicates that it is a conscious operation at this time. The preset time can be set to 3 seconds. According to the distance signal matching the corresponding shutdown delay time, in this way, the shutdown delay time can be adjusted according to the distance between the object to be detected and the ranging device 12, and manual adjustment is not required, so that the situation that the delay shutdown needs to be performed immediately and manual operation is not convenient can be avoided.

[0054] As shown in Figure 5 According to the embodiment of the present application, on the other hand, an extractor hood 10 is provided, which comprises a fan system, and the extractor hood adopts the shutdown control method of the household appliance to control the fan system to be closed.

[0055] By matching the corresponding shutdown delay time according to the distance signal, manual adjustment is not required, so that the problem that the oil stains on the hands are much when cooking, and the accurate shutdown delay time of the extractor hood 10 needs to be set can be avoided.

[0056] In another embodiment, as shown in Figure 5 and Figure 6 The extractor hood 10 comprises a casing 11, a ranging device 12 and a controller 15. The casing 11 encloses a smoke collecting cavity. The ranging device 12 is arranged on the casing 11 and is adapted to detect the distance when the object to be detected stays for a preset time in a ranging range and send a distance signal. The controller 15 is in communication connection with the ranging device 12. The controller 15 acquires the distance signal sent by the ranging device 12. The controller 15 matches the corresponding shutdown delay time according to the distance signal, and controls the main machine of the extractor hood 10 to be closed when the shutdown delay time comes.

[0057] The above-mentioned extractor hood 10 is a range hood 10. The extractor hood 10 further comprises a fan system for sucking and exhausting the oil fume in the smoke collecting cavity. The fan system comprises an impeller in a volute and a motor for driving the impeller to rotate. When the impeller rotates, a negative pressure suction force is generated at the center of the fan system, and the oil fume below the range hood 10 is sucked into the smoke collecting cavity, and then is collected and guided by the volute after being accelerated by the fan, and is exhausted to the outside. Generally, the motor of the fan system is the main machine of the range hood 10.

[0058] The distance measuring device 12 is arranged on the casing 11, and can detect the distance between the object to be detected and the distance measuring device 12, wherein the object to be detected can be a human hand or other objects, and the human hand is the most convenient. In order to avoid the influence of misoperation, after the object to be detected is detected by the distance measuring device 12, the distance signal and the residence time are synchronously generated to the controller 15, and the controller 15 stores a preset time. The controller 15 first checks the residence time, and when it is judged that the residence time of the object to be detected is less than the preset time, the controller 15 does not process the distance signal detected by the residence time, which can save the program and improve the processing efficiency of the data.

[0059] The controller 15 also stores a shutdown delay time corresponding to different distance signals. When the controller 15 judges that the residence time of the object to be detected is greater than or equal to the preset time, the controller 15 processes the distance signal detected by the residence time, and the controller 15 matches the corresponding shutdown delay time according to the distance signal. In this way, the shutdown delay time can be adjusted according to the distance between the object to be detected and the distance measuring device 12, and manual adjustment is not required, thereby avoiding the problem that when cooking, the hands are covered with a lot of oil stains, but the accurate shutdown delay time of the range hood 10 needs to be set.

[0060] In the distance measuring range, the distance signal of the object to be detected staying in the preset time is obtained by the distance measuring device 12, so that the main machine of the range hood 10 can be automatically controlled to be turned off according to the actual needs of the user, and direct contact of the hand with the range hood 10 can also be avoided. When the user's hands have oil stains, or it is inconvenient to operate by means of keys, buttons, knobs and other manual operation methods, as long as the hand is stretched out, the distance between the hand and the distance measuring device 12 is obtained under the premise of staying for a preset time, the corresponding shutdown delay time can be automatically obtained, so that the delay shutdown button does not need to be touched, and the problem of poor user experience caused by dirty buttons is avoided.

[0061] In addition, the user can set the timing shutdown time as needed, without causing waste. For example, when the user uses the timing cooker to cook soup for a long time, the soup has been cooked, but the cooker has been automatically turned off, but the range hood 10 is still working. Therefore, by using the method to control the shutdown delay time of the range hood 10, the situation that the soup is cooked, the cooker is automatically turned off, but the range hood 10 is still working can be avoided, so that other safety accidents or waste of electric energy can be easily caused.

[0062] Moreover, the signal transmission between the distance device and the controller 15 can be wired transmission or wireless transmission. Therefore, the distance device can be connected to the controller 15 by wire or wirelessly through the wireless transmission module 16, as shown in Figure 4 Thus, the installation of the distance detection module is facilitated, and wired connection is not required. The distance device can be placed flexibly on any side of the smoke collection cavity.

[0063] Since WIFI wireless network and Bluetooth are widely used, the wireless transmission module 16 adopts WIFI wireless network or Bluetooth to wirelessly transmit data. By using WIFI wireless network or Bluetooth to wirelessly transmit data, the implementation is facilitated, and the transmission speed is fast, which is convenient for the user to set the time delay of the shutdown in real time.

[0064] Specifically, the distance measuring device 12 is an infrared distance measuring sensor.

[0065] The infrared distance measuring sensor is a sensing device, which is a measurement system using infrared as a medium. The infrared distance measuring sensor has a pair of infrared signal emitting and receiving diodes. The infrared distance measuring sensor LDM301 emits a beam of infrared light, which forms a reflection process after irradiating an object. The reflected signal is received by the sensor, and then the CCD image processing receives the time difference data of the emission and reception. After being processed by the signal processor, the distance of the object is calculated.

[0066] The infrared distance measuring sensor is installed on the above-mentioned range hood 10, which can identify the distance from the hand to the infrared distance measuring sensor, and thus convert the distance into a set time length. Therefore, without touching anything, as long as the hand is placed in the distance measuring range, an alarm, such as a voice alarm, will be triggered, which is equivalent to setting an alarm. When the hand exits the distance measuring range, the alarm rings, and the timing of the corresponding time delay of the shutdown begins.

[0067] As shown in Figure 6 In another embodiment, the distance measuring device 12 is arranged on the side of the casing 11. This is because, if the distance measuring device 12 is arranged on the operation panel 111, the user is likely to trigger the distance measuring device 12 during cooking or walking, which may cause false operation. In order to prevent the occurrence of false triggering events, the distance measuring device 12 is arranged on the side of the casing 11 according to the installation position of the range hood and the user's usage habit, for example, the distance measuring device 12 is installed on the left side or the right side of the casing 11, or one distance measuring device 12 is installed on each side of the casing 11, which can be used for different scenes and user groups, and can avoid false operation.

[0068] Further, the distance measuring device 12 is detachably connected with the casing 11. Specifically, the distance measuring device 12 can be provided by default, and is generally installed on one side of the casing 11, for example, the right side. If the user feels inconvenient to operate on the right side, the distance measuring device 12 can be detached and then installed on the left side.

[0069] Specifically, the distance measuring device 12 can be detachably connected with the casing 11 in a magnetic attraction, adhesive or threaded connection manner. For example, the bottom of the distance measuring device 12 can be provided with double-sided adhesive tape. Since the casing 11 is generally made of metal, a magnet is arranged on one side or the bottom of the distance measuring device 12. Alternatively, threaded holes or through holes can be arranged on the distance measuring device 12, and a plurality of threaded holes with different heights are arranged on the left side or the right side of the casing 11, and the distance measuring device 12 is connected to the casing 11 by screws or bolts. Therefore, the user can operate by himself according to his own needs.

[0070] By arranging the distance measuring device 12 on the side of the casing 11, the pollution of the distance measuring device 12 by oil fume or water vapor can be effectively reduced.

[0071] In another embodiment, continuing to combine the distance measuring device 12, the casing 11, the controller 15 and the distance measuring device 12 shown in Figure 6 and Figure 4 The range hood 10 further comprises a receiving terminal 13 arranged on the casing 11, and the receiving terminal 13 is in communication connection with the controller 15 to display the shutdown delay time.

[0072] The receiving terminal 13 can display the shutdown delay time. Specifically, the receiving terminal 13 comprises a display screen. When the controller 15 matches the corresponding shutdown delay time according to the distance signal, the corresponding shutdown delay time is displayed on the receiving terminal 13, so that the user can intuitively observe the shutdown delay time. When the displayed shutdown delay time is not the target time desired by the user, the user can again place the to-be-detected object in the distance measuring range of the distance measuring device 12 until the shutdown delay time displayed on the receiving terminal 13 is consistent with the target time. Then, the user removes the to-be-detected object from the distance measuring range, and the controller 15 can determine the shutdown delay time. When the shutdown delay time arrives, the controller 15 controls the main machine of the range hood 10 to be turned off. The main machine of the range hood 10 is a motor.

[0073] The lower end of the casing 11 of the range hood 10 is narrow, the upper end is wide, and the front and rear sides of the casing 11 are inclined, as shown in Figure 6 and Figure 7As shown, the bottom of the casing 11 is also provided with an oil cup 14, through which the oil generated in the smoke collection cavity can be collected. The oil cup 14 is movably connected with the casing 11, and the oil cup 14 is provided with a buckle 141. When the oil cup 14 is full of waste oil, the oil cup 14 can be taken down through the buckle 141 for cleaning, and then installed back to the original position for continuous use.

[0074] By acquiring the distance signal of the object to be detected staying in the preset time within the ranging range, the main machine of the range hood 10 can be automatically controlled to be turned off according to the actual needs of the user, and direct contact of the hand with the range hood 10 can also be avoided. When the user's hand is stained with oil, or it is inconvenient to operate by means of keys, buttons, knobs and other manual operation methods, as long as the hand is stretched out, the distance between the hand and the distance measuring device 12 is acquired under the premise of staying for a preset time, the delay time corresponding to the shutdown can be automatically acquired, so that the delay shutdown key does not need to be touched, and the problem of poor user experience caused by dirt on the key area is avoided.

[0075] In addition, the user can set the time of the timing shutdown as needed, without causing waste. For example, when the user uses the timing cooker to cook soup for a long time, the soup has been cooked, but the cooker has realized automatic shutdown, but the range hood 10 is still working. Therefore, by using the method to control the delay time of the shutdown of the range hood 10, the situation that the range hood 10 is still working after the soup is cooked and the cooker is automatically turned off can be avoided, so that other safety accidents or waste of electric energy are easily caused.

[0076] The above-mentioned ranging range can be set to 20 cm, 30 cm or 50 cm, or other data, which is not limited here. The reason for setting the ranging range is also to ensure the reliability of the operation, so as to avoid the adverse effects caused by the misoperation. For example, if an object stays at a relatively far distance for a time that meets the requirements, but it is not intended by the cook, if the distance measuring device 12 sends the detection signal to the controller 15 for data processing at this time, misoperation is easily caused.

[0077] In another embodiment, the shutdown control time of the range hood as a household appliance is taken as an example for illustration, as shown in the flowchart of FIG. 10. Figure 2 As shown, it also includes a step S104 of displaying the delay time of the shutdown. After step S103, that is, when the delay time of the shutdown corresponding to the distance signal is matched, the delay time of the shutdown can be displayed. By displaying the delay time of the shutdown before the delay time of the shutdown comes, the target time can be adjusted in time.

[0078] In another embodiment, a countdown time of the shutdown delay time is also displayed. When the hand is out of the distance measuring range, it is determined that the shutdown delay time has been determined, and at this time, the countdown time can be displayed on the display screen of the receiving terminal 13, so that the user can intuitively observe how long the time is left.

[0079] In addition, in order to make it more convenient for the user to adjust the shutdown delay time at any time, for example, when the user suddenly has something to do and needs to end the cooking in advance, or simply feels that the previously confirmed shutdown delay time is not appropriate, at this time, the distance of the to-be-detected object is adjusted before the shutdown delay time arrives until the shutdown delay time meets the target time, which can more humanly meet the individual needs of the user and further improve the customer experience.

[0080] Specifically, as shown in Figure 3 In the distance measuring range, a plurality of distance segments are divided, and each distance segment corresponds to a shutdown delay time. The starting position of each distance segment is the distance measuring device 12 for detecting the distance signal.

[0081] In this way, the distance can be measured more conveniently. Taking the hand as an example, the distance between the hand and the distance measuring device 12 is far, and the corresponding distance is long, and vice versa.

[0082] For example, when the distance between the hand and the distance measuring sensor is within 5 cm, the corresponding shutdown delay time is set to 10 seconds; when the distance between the hand and the distance measuring sensor is within 10 cm, the corresponding shutdown delay time is set to 20 seconds; when the distance between the hand and the distance measuring sensor is within 15 cm, the corresponding shutdown delay time is set to 40 seconds; and when the distance between the hand and the distance measuring sensor is within 20 cm, the corresponding shutdown delay time is set to 60 seconds.

[0083] In addition, the distance and the delay time can also be set in reverse. For example, when the distance between the hand and the distance measuring sensor is within 5 cm, the corresponding shutdown delay time is set to 60 seconds; when the distance between the hand and the distance measuring sensor is within 10 cm, the corresponding shutdown delay time is set to 40 seconds; when the distance between the hand and the distance measuring sensor is within 15 cm, the corresponding shutdown delay time is set to 20 seconds; and when the distance between the hand and the distance measuring sensor is within 20 cm, the corresponding shutdown delay time is set to 5 seconds.

[0084] The distance measuring range can be 20 cm. In the range of 20 cm, the hand needs to stay for 3 seconds or more to activate the delay function module, otherwise it is easy to trigger by mistake.

[0085] If the hand is placed at a distance of 17 cm, the corresponding delay time can be between 40 seconds and 60 seconds, and it can be seen that the position of the hand does not have to be very accurate as shown in the figure, because the user can see the real time on the display screen by moving the hand, and when the target time is displayed, the hand is removed to complete the setting.

[0086] Of course, there can be more distance and corresponding relationship of the set delay time of the shutdown, and there can be other ways of distance and corresponding relationship of the set delay time of the shutdown. In this way, as the distance increases, the corresponding delay time of the shutdown is longer, and the setting is regularly carried out, which is easy to remember and can be used for better user experience. For example, when a longer delay time is needed, the hand is placed farther away from the distance measuring device 12, and vice versa.

[0087] When the user needs to delay the shutdown of the range hood 10, the hand is placed in front of the distance sensor within a distance of 20 cm for 3 seconds, and the time can be determined according to the specific situation. Then, when the "ding ding" sound is emitted, the delay function module is activated, and the user can adjust the delay shutdown countdown time by moving the distance between the hand and the distance sensor. At this time, the countdown time value can be observed in real time through the display screen, that is, the required delay shutdown time, which is in seconds. After the hand is removed, the shutdown countdown starts to calculate, and when the countdown is over, the range hood 10 executes the shutdown command to stop the motor operation and turn off the light.

[0088] The real-time of the above method steps is completed by the controller 15, and therefore, the chip in the controller 15 has an editable program language.

[0089] Therefore, the application also provides a storage medium, which is a computer readable medium and stores a computer program, and the computer program is executed by a processor to implement the method provided by any embodiment of the application.

[0090] The storage medium can include, but is not limited to, a U disk, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and various media that can store program codes.

[0091] In the embodiment, the processor executes the method steps described in the above embodiments according to the program code stored in the storage medium. Alternatively, the specific examples in the embodiment can refer to the examples described in the above embodiments and optional implementation manners, and the embodiment will not be described here. Obviously, those skilled in the art should understand that the above modules or steps of the present disclosure can be realized by a general computing device, which can be concentrated on a single computing device or distributed on a network composed of multiple computing devices, and alternatively, they can be realized by program codes executable by the computing device, so that they can be stored in the storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in different order, or they can be manufactured into individual integrated circuit modules, or multiple modules or steps thereof can be manufactured into a single integrated circuit module. Thus, the present disclosure is not limited to any specific combination of hardware and software.

[0092] It can be known that the controller 15 at least includes a memory and a processor, the memory stores a computer program, and the processor realizes the method provided by any embodiment of the present disclosure when executing the computer program on the memory.

[0093] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A method for controlling the shutdown of a household appliance, characterized in that, include: Within the ranging range, acquire the distance signal of the object to be detected remaining within a preset time. The corresponding shutdown delay time is matched according to the distance signal; Within the ranging range, multiple distance segments are divided, and each distance segment corresponds to a power-off delay time. The starting position of each distance segment is the ranging device (12) that detects the distance signal. The main unit of the household appliance is turned off when the shutdown delay time arrives; Adjust the distance of the object to be detected before the shutdown delay time arrives, until the shutdown delay time meets the target time.

2. The method for controlling the shutdown of a household appliance according to claim 1, characterized in that, The shutdown delay time is displayed before the shutdown delay time arrives.

3. The method for controlling the shutdown of a household appliance according to claim 2, characterized in that, Displays the countdown time for the shutdown delay.

4. A range hood, characterized in that, The range hood includes a fan system, and the fan system is controlled to shut down using the power-off control method for household appliances as described in any one of claims 1 to 3.

5. The range hood according to claim 4, characterized in that, The range hood also includes: Casing (11); A ranging device (12) is provided on the housing (11). The ranging device (12) is adapted to detect the distance of the object to be detected when it stays for a preset time within the ranging range, and send a distance signal. The controller (15) is communicatively connected to the ranging device (12). The controller (15) acquires the distance signal sent by the ranging device (12). The controller (15) matches the corresponding shutdown delay time according to the distance signal and controls the fan system of the range hood (10) to shut down when the shutdown delay time arrives.

6. The range hood according to claim 5, characterized in that, The ranging device (12) is located on the side of the housing (11).

7. The range hood according to claim 5, characterized in that, The ranging device (12) is detachably connected to the housing (11).

8. The range hood according to any one of claims 5 to 7, characterized in that, The range hood also includes a receiving terminal (13), which is located on the housing (11). The receiving terminal (13) is communicatively connected to the controller (15) to display the shutdown delay time.

9. The range hood according to any one of claims 5 to 7, characterized in that, The ranging device (12) is an infrared ranging sensor.

Images