A disassembly protection system and method for a range hood

Abstract

The present application relates to the technical field of kitchen appliances, and particularly relates to a dismounting protection system and method for an extractor hood, wherein a first protection unit is installed between a panel and a machine body of the extractor hood, used for detecting a dismounting state of the panel and generating first feedback information and sending the first feedback information to a control unit, so that the control unit controls a fan of the extractor hood to stop running; a second protection unit is installed at a connection between a wind guide ring and a volute of the fan, used for locking the wind guide ring and the volute, and the second protection unit is used for unlocking in response to an unlocking instruction sent by the control unit after a preset time countdown is completed; and a third protection unit is installed on the wind guide ring, and the third protection unit is used for detecting a dismounting state of the wind guide ring and generating second feedback information and sending the second feedback information to the control unit, so that the control unit controls a motor to be powered off. With the triple protection, when a user dismounts the extractor hood, the corresponding positions of the extractor hood can be powered off, and thus the user is protected from being hurt.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and in particular to a disassembly protection system and method for a range hood. Background Technology

[0002] Range hoods are essential kitchen appliances in every household, used to extract cooking fumes and purify the indoor environment. After prolonged use, range hoods easily accumulate a large amount of grease, causing grease buildup on components such as the filter, air guide ring, fan, and volute. This not only affects the performance of the range hood but also poses a fire hazard. Therefore, many range hoods adopt a detachable component structure to facilitate cleaning by users.

[0003] However, when users disassemble and clean the range hood, they may make mistakes, such as forgetting to turn off the power or ignoring other potential problems, which could easily cause physical harm to the user. Summary of the Invention

[0004] To address at least one of the aforementioned technical problems, the present invention provides a disassembly and protection system and method for a range hood, the solution of which is as follows:

[0005] On one hand, the present invention provides a range hood disassembly protection system, including a first protection unit, a second protection unit, a third protection unit, and a control unit:

[0006] The first protection unit is installed between the panel and the body of the range hood, and is used to detect the disassembly status of the panel and generate first feedback information to send to the control unit so that the control unit controls the fan of the range hood to stop running;

[0007] The second protection unit is installed at the connection between the air guide ring and the volute of the fan, and is used to lock the air guide ring and the volute. The second protection unit is used to unlock in response to the unlocking command sent by the control unit after the countdown of the preset time is completed.

[0008] The third protection unit is installed on the air guide ring. The third protection unit is used to detect the disassembly status of the air guide ring and generate second feedback information to send to the control unit so that the control unit controls the motor to cut off power.

[0009] Furthermore, it also includes a fault detection unit, which is electrically connected to the control unit and the second protection unit;

[0010] The fault detection unit is used to detect the second protection unit and generate a detection result, so that the control unit controls the operation of the wind turbine based on the fault result.

[0011] Furthermore, it also includes an alarm unit, which is electrically connected to the control unit and is used to play alarm information generated by the control unit when it determines that the second protection unit is in a target fault state.

[0012] Furthermore, the first protection unit includes a reed switch, which is installed at the connection between the panel and the body.

[0013] Furthermore, the second protection unit includes an electromagnetic lock.

[0014] Furthermore, the third protection unit includes a micro switch, which is connected to the live wire of the motor.

[0015] On the other hand, the present invention provides a range hood, including the range hood disassembly protection system described above.

[0016] On the other hand, the present invention also provides a method for disassembling and protecting a range hood, comprising:

[0017] Obtain first feedback information sent by the first protection unit; the first feedback information indicates that the first protection unit has detected that the panel of the range hood has been removed;

[0018] Based on the first feedback information, a fan stop command is generated to stop the fan of the range hood and start a countdown for a preset time.

[0019] After the countdown is completed, an unlocking command is sent to the second protection unit so that the second protection unit responds to the unlocking command and releases the lock on the fan guide ring;

[0020] The third protection unit receives a second feedback message; the second feedback message indicates that the third protection unit has detected that the air guide ring has been disassembled.

[0021] Based on the second feedback information, a motor power-off command is generated so that the motor of the range hood responds to the motor power-off command and cuts off the power, thus entering the range hood cleaning mode.

[0022] Furthermore, the method also includes:

[0023] Obtain third feedback information from the third protection unit; the third feedback information indicates that the third protection unit has detected that the air guide ring has been installed;

[0024] A motor power-on command is generated based on the third feedback information, so that the motor of the range hood is powered on in response to the motor power-on command;

[0025] Send a lockout command to the second protection unit so that the second protection unit responds to the lockout command and locks the air guide ring;

[0026] Obtain the fourth feedback information sent by the first protection unit; the fourth feedback information indicates that the first protection unit has detected that the panel has been installed;

[0027] Based on the fourth feedback information, the range hood cleaning mode is deactivated.

[0028] Furthermore, the method also includes:

[0029] A detection signal is sent to the second protection unit so that the second protection unit generates a detection result based on the detection signal;

[0030] The detection result is obtained, and when the detection result indicates that the second protection unit is in a target fault state, the fan is controlled to rotate in reverse and an alarm message is generated.

[0031] By adopting the above technical solution, the present invention has the following beneficial effects:

[0032] This invention provides a range hood disassembly protection system. By setting up a first protection unit, a second protection unit, a third protection unit, and a control unit, when a user cleans the range hood, the first protection unit detects that the panel has been disassembled. The control unit then stops the range hood's fan and starts a countdown. After the countdown is complete, the control unit sends an unlocking command to the second protection unit, unlocking it to allow the user to disassemble the air guide ring. When the third protection unit detects that the air guide ring has been disassembled, the control unit cuts off the power to the motor, entering the range hood cleaning mode. Thus, through the triple protection of the first, second, and third protection units, power can be cut off to the corresponding parts of the range hood when the user disassembles it, thereby protecting the user from injury.

[0033] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and the same reference numerals usually represent the same parts. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 A schematic diagram of the architecture of a range hood disassembly protection system provided in this embodiment of the invention;

[0036] Figure 2 A schematic diagram of another range hood disassembly protection system provided in this embodiment of the invention;

[0037] Figure 3 This is a flowchart illustrating a method for disassembling and protecting a range hood according to an embodiment of the present invention.

[0038] Figure 4 This is a flowchart illustrating another method for disassembling and protecting a range hood, as provided in an embodiment of the present invention. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0040] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the invention. In the description of the invention, it should be understood that the terms "upper," "lower," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be used in real time in orders other than those illustrated or described herein.

[0041] refer to Figure 1 As shown, the present invention first provides a range hood disassembly protection system, including a first protection unit, a second protection unit, a third protection unit, and a control unit.

[0042] The first protection unit is installed between the panel and the body of the range hood. It is used to detect the disassembly status of the panel and generate first feedback information to send to the control unit so that the control unit can control the fan of the range hood to stop running.

[0043] Specifically, when a user disassembles the range hood for cleaning, the first step is to remove the range hood's panel. Therefore, a first protection unit is installed between the range hood panel and the main body to detect the panel's disassembly status and simultaneously generate first feedback information, which is sent to the control unit. In this embodiment, the control unit is the range hood's main control MCU, comprising hardware and software, capable of transmitting instructions and information through receiving and transmitting signals. When the control unit determines, based on the first feedback information, that the panel has been disassembled, it controls the range hood's fan to stop operating, preventing the fan from continuing to rotate and potentially injuring the user.

[0044] In one possible implementation, the first protection unit includes a reed switch, which is installed at the connection between the panel and the body to detect the disassembly status of the panel.

[0045] The embodiments of the present invention take into account the handling of abnormal situations of the first protection unit. Taking the reed switch as an example, if it is always in the closed state, when the user disassembles the panel, the reed switch does not detect the user's need to disassemble and clean it, and the second protection unit will not unlock. Therefore, there is no user safety problem, and the user can report the fault for repair. If it is always in the open state, there is also no user safety problem, and the user can report the fault for repair.

[0046] The second protection unit is installed at the connection between the air guide ring and the volute of the fan. It is used to lock the air guide ring and the volute. The second protection unit is used to unlock the fan in response to the unlocking command sent by the control unit after the countdown of the preset time has been completed.

[0047] Specifically, after removing the panel, the air guide ring is removed. However, even after the control unit stops the range hood fan, it may continue to rotate due to inertia. Therefore, a second protection unit is installed to prevent the user from removing the air guide ring while the fan is rotating. The second protection unit is installed at the connection between the air guide ring and the volute housing to lock them together. When the second protection unit is locked, the user cannot remove the air guide ring. After the control unit stops the range hood fan, a preset countdown begins. After the countdown ends, an unlock command is sent to the second protection unit, which then unlocks the fan. The preset time can be set according to actual needs, such as 30 seconds, or other times; no limitation is made here.

[0048] In one possible implementation, the second protection unit includes an electromagnetic lock. The electromagnetic lock operates primarily based on electromagnetic induction and force, generating force through the magnetic field created by current within a conductor. Specifically, the electromagnetic lock consists of a coil, a baffle, a gasket, an upper copper plate, a lower copper plate, and screws. When the coil is energized, a strong magnetic field is generated inside the electromagnet, causing the gap between the baffle and the gasket to disappear. At this point, the electromagnet is in a locked state, locking the air guide ring and the volute. Upon receiving an unlocking command, the electromagnetic attraction is disengaged, causing the air guide ring and the volute to lock in place, allowing the user to remove the air guide ring.

[0049] refer to Figure 2 As shown, in one possible implementation, a fault detection unit is also included, which is electrically connected to the control unit and the second protection unit; the fault detection unit is used to detect the second protection unit and generate a detection result so that the control unit controls the operation of the fan based on the fault result.

[0050] Specifically, this embodiment of the invention also considers handling abnormal situations of the second protection unit. Taking an electromagnetic lock as an example, there are two possible scenarios for electromagnetic lock malfunctions: one is that the electromagnetic lock remains locked and cannot be opened, which does not involve user safety issues, and the user can simply report the fault for repair; the other is that the electromagnetic lock is in an unlocked state, which prevents the air guide ring and volute from locking, and direct disassembly of the air guide ring by the user may be dangerous. Therefore, before controlling the second protection unit, a fault detection unit is used to detect whether the second protection unit is faulty and generate a detection result, so that the control unit can control the operation of the fan based on the fault result. Specifically, the fault detection unit applies a voltage value lower than the driving voltage to the electromagnetic lock. If a current value is detected at this time, it indicates that the electromagnetic lock is in an unlocked state and is determined to be damaged. If the user needs to disassemble the panel to clean the air guide ring, the control unit controls the fan to immediately brake by reversing at low speed, so that the fan stops rotating quickly to ensure user safety.

[0051] In one possible implementation, an alarm unit is also included, which is electrically connected to the control unit and is used to play alarm information generated by the control unit when it determines that the second protection unit is in a target fault state.

[0052] Specifically, when the control unit determines that the second protection unit is in a target fault state, that is, when the electromagnetic lock is always in an unlocked state, it generates an alarm message, which can be a voice alarm message, and controls the alarm unit to play the voice alarm message. In some embodiments, the alarm unit can be a buzzer, which reminds the user that the second protection unit is in a target fault state by emitting a "beep beep beep" sound, and to pay attention to safety when disassembling the air guide ring.

[0053] The third protection unit is installed on the air guide ring. The third protection unit is used to detect the disassembly status of the air guide ring and generate second feedback information to send to the control unit so that the control unit controls the motor to cut off the power.

[0054] Specifically, a third protection unit is installed on the air guide ring to detect its disassembly status. Simultaneously, it generates a second feedback message and sends it to the control unit. Based on this second feedback message, the control unit determines that the air guide ring has been disassembled and then cuts off the power to the motor. This disconnects the high-voltage power supply to the range hood, ensuring that users will not be electrocuted when cleaning it.

[0055] In one possible implementation, the third protection unit includes a microswitch connected to the live wire of the motor.

[0056] On the other hand, the present invention provides a range hood, including the range hood disassembly protection system described above.

[0057] This invention also provides a method for disassembling and protecting a range hood, see reference. Figure 3 The diagram illustrates a flowchart of a method for disassembling and protecting a range hood according to an embodiment of the present invention. It should be noted that while this specification provides the operational steps described in the embodiments or flowchart, more or fewer operational steps may be included based on conventional or non-inventive methods. The order of steps listed in the embodiments is merely one possible execution order among many and does not represent the only possible execution order. In actual system devices or products, the method can be executed sequentially or in parallel (e.g., in a parallel processor or multi-threaded processing environment) as shown in the embodiments or drawings. The method for disassembling and protecting a range hood provided in this embodiment of the present invention includes:

[0058] S301, Obtain first feedback information sent by the first protection unit; the first feedback information indicates that the first protection unit has detected that the panel of the range hood has been removed.

[0059] S302, based on the first feedback information, generates a fan stop command to stop the range hood fan and start a countdown for a preset time.

[0060] S203, after the countdown is completed, sends an unlocking command to the second protection unit so that the second protection unit responds to the unlocking command and releases the lock on the fan guide ring.

[0061] S304, Obtain the second feedback information sent by the third protection unit; the second feedback information indicates that the third protection unit has detected that the air guide ring has been disassembled.

[0062] S305, based on the second feedback information, generates a motor power-off command so that the range hood motor responds to the motor power-off command and cuts off power, entering the range hood cleaning mode.

[0063] Specifically, the first protection unit detects the disassembly status of the panel and generates first feedback information, which is sent to the control unit. The control unit receives the first feedback information and, when it determines that the panel has been disassembled, generates a fan stop command to stop the range hood's fan and starts a preset countdown, waiting for the fan to completely stop rotating. After the countdown ends, an unlock command is sent to the second protection unit, which responds to the unlock command and unlocks the fan guide ring to release the lock. The third protection unit detects the disassembly status of the guide ring and generates second feedback information, which is sent to the control unit. The control unit receives the second feedback information and, after determining that the guide ring has been disassembled, controls the motor to cut off power. At this time, the range hood enters the range hood cleaning mode.

[0064] In one possible implementation, the method further includes:

[0065] Send a detection signal to the second protection unit so that the second protection unit generates a detection result based on the detection signal;

[0066] The system acquires the detection results. When the detection results indicate that the second protection unit is in a target fault state, it controls the fan to rotate in reverse and generates an alarm message.

[0067] Specifically, before sending an unlock command to the second protection unit, a fault detection is performed on the second protection unit. A detection signal is sent to the second protection unit via a fault detection unit, enabling the second protection unit to generate a detection result based on the signal. For example, the fault detection unit applies a voltage lower than the driving voltage to the electromagnetic lock and obtains the detection result. If the detection result indicates that the second protection unit is in the target fault state, i.e., the electromagnetic lock is continuously in an unlocked state (e.g., the detection result indicates that a current value is detected), it means the electromagnetic lock is continuously in an unlocked state, and it is determined that the electromagnetic lock is damaged. The fan is then controlled to rotate in reverse, causing it to stop quickly, and an alarm message is generated. An alarm unit can also be controlled to play a voice alarm message to ensure user safety. Furthermore, in this case, there is no need to send an unlock command to the second protection unit; the user can remove the air guide ring after the fan has completely stopped rotating.

[0068] refer to Figure 4 In one possible implementation, the method further includes:

[0069] S401, Obtain the third feedback information from the third protection unit; the third feedback information indicates that the third protection unit has detected that the air guide ring has been installed.

[0070] S402, a motor power-on command is generated based on the third feedback information, so that the motor of the range hood is powered on in response to the motor power-on command.

[0071] S403, send a lockout command to the second protection unit so that the second protection unit responds to the lockout command and locks the air guide ring.

[0072] S404, Obtain the fourth feedback information sent by the first protection unit; the fourth feedback information indicates that the first protection unit has detected that the panel has been installed.

[0073] S405, based on the fourth feedback information, deactivates the range hood cleaning mode.

[0074] Specifically, this embodiment of the invention also considers the process of installing the range hood after cleaning. First, the air guide ring is installed. The third protection unit detects the installation status of the air guide ring and generates third feedback information, which is sent to the control unit. The control unit receives the third feedback information. When the control unit determines that the air guide ring has been installed based on the third feedback information, it generates a motor energizing command to energize the range hood motor. At the same time, a locking command is sent to the second protection unit to lock the air guide ring. Next, the panel is installed. The first protection unit detects the installation status of the panel and generates fourth feedback information, which is sent to the control unit. The control unit receives the fourth feedback information. When the control unit determines that the panel has been installed based on the fourth feedback information, it determines that the range hood cleaning is complete and deactivates the range hood cleaning mode.

[0075] Through the above embodiments, this invention, by setting up a first protection unit, a second protection unit, a third protection unit, and a control unit, ensures that when a user cleans the range hood, the first protection unit detects that the panel has been disassembled, the control unit stops the range hood's fan and starts a countdown. After the countdown is complete, the control unit sends an unlocking command to the second protection unit, unlocking it to allow the user to disassemble the air guide ring. When the third protection unit detects that the air guide ring has been disassembled, the control unit cuts off the power to the motor, entering the range hood cleaning mode. Thus, through the triple protection of the first, second, and third protection units, power can be cut off at the corresponding locations of the range hood when the user disassembles it, thereby protecting the user from injury.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A range hood disassembly protection system, characterized by, The first protection unit, the second protection unit, the third protection unit and the control unit are included. The first protection unit is installed between the panel and the body of the range hood, and is used for detecting the disassembly state of the panel and generating first feedback information sent to the control unit, so that the control unit controls the fan of the range hood to stop running. The second protection unit is installed at the connection between the fan ring and the volute, and is used for locking the fan ring and the volute, and the second protection unit is used for unlocking in response to the unlocking instruction sent by the control unit after the countdown of the preset time is completed. The third protection unit is installed on the fan ring, and the third protection unit is used for detecting the disassembly state of the fan ring and generating second feedback information sent to the control unit, so that the control unit controls the motor to be powered off.

2. The range hood dismounting protection system according to claim 1, characterized in that, The fault detection unit is also included, and the fault detection unit is electrically connected with the control unit and the second protection unit. The fault detection unit is used for detecting the second protection unit and generating a detection result, so that the control unit controls the running of the fan based on the fault result.

3. The range hood disassembly protection system of claim 1, wherein, The alarm unit is also included, and the alarm unit is electrically connected with the control unit, and the alarm unit is used for playing the alarm information generated by the control unit when it is determined that the second protection unit is in a target fault state.

4. The range hood dismounting protection system according to claim 1, characterized in that, The first protection unit includes a magnetic reed switch, which is installed at the connection between the panel and the body.

5. The range hood disassembly protection system of claim 1, wherein, The second protection unit includes an electromagnetic lock.

6. The range hood dismounting protection system according to claim 1, characterized in that, The third protection unit includes a micro switch, which is connected with the live wire of the motor.

7. A range hood characterized by, The range hood disassembly protection system includes the range hood disassembly protection system according to any one of claims 1 to 6.

8. A method of dismounting protection for a range hood, characterized in that, It includes: obtaining the first feedback information sent by the first protection unit; The first feedback information indicates that the first protection unit detects that the panel of the range hood is disassembled; Based on the first feedback information, a fan stop instruction is generated to make the fan of the range hood stop running and start a countdown of a preset time; After the countdown is completed, an unlocking instruction is sent to the second protection unit, so that the second protection unit responds to the unlocking instruction to release the locking of the fan ring; Obtain the second feedback information sent by the third protection unit; The second feedback information indicates that the third protection unit detects that the fan ring is disassembled; Based on the second feedback information, a motor power-off instruction is generated to make the motor of the range hood respond to the motor power-off instruction to be powered off and enter the range hood cleaning mode.

9. The range hood disassembly protection method according to claim 8, wherein, It also includes: obtaining the third feedback information of the third protection unit; The third feedback information indicates that the third protection unit detects that the fan ring is installed; Based on the third feedback information, a motor power-on instruction is generated to make the motor of the range hood respond to the motor power-on instruction to be powered on; The locking instruction is sent to the second protection unit, so that the second protection unit responds to the locking instruction to lock the fan ring; Obtain the fourth feedback information sent by the first protection unit; The fourth feedback information indicates that the first protection unit detects that the panel is installed; Based on the fourth feedback information, the range hood cleaning mode is canceled.

10. The range hood disassembly protection method according to claim 8, wherein, Further comprising: sending a detection signal to the second protection unit, so that the second protection unit generates a detection result based on the detection signal; obtaining the detection result, and when the detection result indicates that the second protection unit is in a target fault state, controlling the fan to rotate reversely and generating an alarm information.

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