Range hood cleaning control method and device and range hood

Abstract

The invention discloses an extractor hood cleaning control method and device and an extractor hood. The range hood comprises an impeller and a cleaning assembly, and the range hood cleaning control method comprises the steps that the first rotating speed of the impeller is obtained, the first change value of the rotating speed of the impeller is determined according to the first rotating speed, and whether the range hood enters a self-cleaning mode or not is judged based on the first change value; after the range hood enters the self-cleaning mode, the impeller is controlled to rotate, and in the rotating process of the impeller, spraying of cleaning liquid is controlled, and the cleaning assembly is controlled to start cleaning of the impeller; and after the extractor hood is cleaned once in the self-cleaning mode, a second rotating speed of the impeller is obtained, a second change value of the rotating speed of the impeller is determined according to the second rotating speed, and whether the extractor hood is cleaned again or not is judged according to the second change value. According to the invention, oil stain state sensing and cleaning mode self-adaptive switching are realized, and meanwhile, the cleaning effect and energy consumption are balanced.

Description

Technical Field

[0001] The present invention relates to the technical field of range hood cleaning control, and particularly to a range hood cleaning control method, device and range hood. Background Art

[0002] Range hoods can effectively remove harmful gases such as oil fumes, oxides, and organic substances, protecting the health of household air. Due to the characteristics of Chinese cooking, a large amount of oil fumes and particulate matter are generated during the cooking process, which are likely to deposit in the range hood, affecting the air performance and working noise of the range hood.

[0003] The current self-cleaning technology of range hoods has significant defects. Firstly, existing solutions mostly rely on external motors to drive cleaning brushes or high-pressure steam systems, resulting in complex structures, high manufacturing costs, and difficult maintenance. Secondly, the cleaning effect is limited. Traditional water mist or steam cleaning is difficult to handle solidified oil stains, and there are cleaning blind spots inside and outside the impeller blades. In addition, the degree of intelligence is insufficient. Most self-cleaning systems adopt fixed cleaning cycles and cannot dynamically adjust according to the accumulation state of oil stains, resulting in high energy consumption and low cleaning efficiency. Summary of the Invention

[0004] The present invention provides a range hood cleaning control method, device and range hood to solve the problem that the current fixed cleaning cycle for range hoods cannot be cleaned in time, resulting in high energy consumption and low cleaning efficiency for subsequent cleaning.

[0005] According to one aspect of the present invention, there is provided a range hood cleaning control method. The range hood includes an impeller and a cleaning component. The range hood cleaning control method includes:

[0006] Obtain the first rotation speed of the impeller, and determine the first change value of the impeller rotation speed based on the first rotation speed, so as to judge whether the range hood enters the self-cleaning mode based on the first change value;

[0007] When the range hood enters the self-cleaning mode, control the impeller to rotate, and during the rotation of the impeller, control the spraying of the cleaning liquid and control the cleaning component to start cleaning the impeller;

[0008] After the range hood performs a cleaning in the self-cleaning mode once, obtain the second rotation speed of the impeller, and determine the second change value of the impeller rotation speed based on the second rotation speed, so as to judge whether to clean the range hood again according to the second change value.

[0009] Optionally, before determining the first change value of the impeller rotation speed according to the first rotation speed of the impeller, it further includes:

[0010] Obtain the initial rotation speed of the impeller;

[0011] Determining the first change value of the impeller rotation speed according to the first rotation speed includes:

[0012] Determine the first change value of the impeller speed based on the initial speed and the first speed.

[0013] Optionally, determine whether the range hood enters the self - cleaning mode based on the first change value, including:

[0014] If the first change value is less than the first threshold, determine that the range hood does not trigger the self - cleaning mode or exits the self - cleaning mode;

[0015] If the first change value is greater than or equal to the first threshold and less than the second threshold, determine that the self - cleaning mode of the range hood is the quick - cleaning mode;

[0016] If the first change value is greater than or equal to the second threshold, determine that the self - cleaning mode of the range hood is the deep - cleaning mode;

[0017] Wherein, the first threshold is less than the second threshold.

[0018] Optionally, determine that the self - cleaning mode of the range hood is the quick - cleaning mode or the deep - cleaning mode;

[0019] When the range hood enters the self - cleaning mode, control the impeller to rotate, and during the rotation of the impeller, control the spraying of the cleaning liquid and control the cleaning component to start cleaning the impeller, including:

[0020] When the range hood enters the quick - cleaning mode, control the impeller to rotate in a cycle for the first set number of times, and during the process of the impeller rotating in a cycle for the first set number of times, synchronously control the spraying of the cleaning liquid at the first temperature and control the cleaning component to start cleaning the impeller; or,

[0021] When the range hood enters the deep - cleaning mode, control the impeller to rotate in a cycle for the second set number of times, and during the process of the impeller rotating in a cycle for the second set number of times, synchronously control the spraying of the cleaning liquid at the second temperature and control the cleaning component to start cleaning the impeller;

[0022] Wherein, the first set number of times is less than the second set number of times, and the first temperature is less than the second temperature.

[0023] Optionally, before controlling the impeller to rotate, it further includes:

[0024] Heat the temperature of the cleaning liquid to the second temperature, and control the temperature of the cleaning liquid to reach the second temperature and last for a set time length.

[0025] Optionally, determine whether to clean the range hood again according to the second change value, including:

[0026] If the second change value is less than the first threshold, determine that the range hood exits the self - cleaning mode;

[0027] If the second change value is greater than or equal to the first threshold value, obtain the cleaning times of the range hood, and determine whether to clean the range hood again according to the cleaning times.

[0028] Optionally, determining whether to clean the range hood again according to the cleaning times includes:

[0029] If the cleaning times reach the set times threshold, generate a fault message for the range hood;

[0030] If the cleaning times do not reach the set times threshold, detect the impeller rotation speed of the range hood again.

[0031] According to another aspect of the present invention, there is provided a range hood cleaning control device. The range hood includes an impeller and a cleaning component. The range hood cleaning control device includes:

[0032] A self-cleaning mode determination module, configured to obtain the first rotation speed of the impeller and determine the first change value of the impeller rotation speed based on the first rotation speed, so as to determine whether the range hood enters the self-cleaning mode based on the first change value;

[0033] An impeller cleaning control module, configured to control the impeller to rotate after the range hood enters the self-cleaning mode, and during the rotation of the impeller, control the spraying of the cleaning liquid and control the cleaning component to start cleaning the impeller;

[0034] A range hood cleaning control module, configured to obtain the second rotation speed of the impeller after the range hood performs a cleaning in the self-cleaning mode, and determine the second change value of the impeller rotation speed based on the second rotation speed, so as to determine whether to clean the range hood again according to the second change value.

[0035] According to another aspect of the present invention, there is provided a range hood including an impeller, a cleaning component fixed on the impeller, and a range hood cleaning control device according to any embodiment of the present invention;

[0036] The cleaning component includes a motor, a bracket, a base, and a brush. The bracket is connected to the base and the push shaft of the motor, and the brush is fixedly retracted inside the base after the range hood exits the self-cleaning mode.

[0037] Optionally, the range hood further includes a smoke collecting cavity, a water storage box, a water pump, a detergent adding box, a water pipe, a volute, and a nozzle;

[0038] The water storage box is fixed on the smoke collecting cavity, the water pump is fixed behind the water storage box, the detergent adding box is fixed above the water storage box, the water pipe passes under the water storage box and through the volute, and the nozzle is at the end of the water pipe for spraying the cleaning liquid on the impeller;

[0039] A heating module and a temperature sensor are arranged inside the water storage box. The heating module is used to heat the cleaning liquid, and the temperature sensor is used to detect the temperature of the cleaning liquid.

[0040] In the technical solution of the embodiment of the present invention, the range hood includes an impeller and a cleaning assembly. The range hood cleaning control method includes: obtaining the first rotation speed of the impeller, and determining the first change value of the impeller rotation speed according to the first rotation speed, so as to judge whether the range hood enters the self-cleaning mode based on the first change value, realizing the perception of the oil stain state and the adaptive switching of the cleaning mode, and balancing the cleaning effect and energy consumption; further, when the range hood enters the self-cleaning mode, controlling the impeller to rotate, and during the rotation of the impeller, controlling the spraying of the cleaning liquid and controlling the cleaning assembly to start cleaning the impeller, that is, driving the bristles of the cleaning assembly by centrifugal force, using the principle of microscopic vibration, and combining with the cleaning liquid to enhance the ability to remove solidified oil stains, while reducing the wear of the bristles on the impeller, realizing the self-cleaning of the range hood with simplified structure, thorough cleaning and intelligence; after the range hood performs a cleaning in the self-cleaning mode once, obtaining the second rotation speed of the impeller, and determining the second change value of the impeller rotation speed according to the second rotation speed, so as to judge whether to clean the range hood again according to the second change value, and realizing the blind area-free cleaning of the inner and outer surfaces and dead corners of the impeller by adaptively cleaning the impeller based on the oil stain state, and significantly improving the oil stain stripping efficiency.

[0041] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0043] Figure 1 is a flowchart of a range hood cleaning control method provided according to an embodiment of the present invention;

[0044] Figure 2 is a flowchart of a range hood cleaning control method provided according to an embodiment of the present invention;

[0045] Figure 3 is a schematic structural diagram of a range hood cleaning control device provided according to an embodiment of the present invention;

[0046] Figure 4 is a schematic structural diagram of a range hood provided according to an embodiment of the present invention;

[0047] Figure 5It is a schematic structural diagram of the cleaning component provided by the embodiment of the present invention when the bristles are in a contracted state;

[0048] Figure 6 It is a schematic structural diagram of the cleaning component provided by the embodiment of the present invention when the bristles are in an expanded state;

[0049] Figure 7 It is a schematic structural diagram of the range hood cleaning control system for implementing the range hood cleaning control method provided by the embodiment of the present invention. Detailed implementation manners

[0050] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0051] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order different from those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0052] Figure 1 This is a flowchart of a range hood cleaning control method provided by an embodiment of the present invention. This embodiment is applicable to the situation of adaptively cleaning the range hood according to the oil stain state. This range hood cleaning control method can be executed by a range hood cleaning control device, which can be implemented in the form of hardware and / or software, and the range hood cleaning control device can be configured in the range hood. The range hood includes an impeller and a cleaning component. It is known that the cleaning component can be fixed on the impeller or can be arranged at other positions. This embodiment does not make any restrictions on this, such as Figure 1 As shown, the range hood cleaning control method includes:

[0053] S110. Obtain the first rotation speed of the impeller, and determine the first change value of the impeller rotation speed according to the first rotation speed, so as to judge whether the range hood enters the self-cleaning mode based on the first change value.

[0054] In this embodiment, considering that there are cleaning blind spots on the inner and outer sides of the impeller blades, it is determined whether the impeller needs to be cleaned according to the impeller speed, and the adaptive self-cleaning of the impeller is realized through the cleaning assembly.

[0055] Among them, the first speed of the impeller is the impeller speed detected in real time by a speed sensor installed on the impeller. The first speed is obtained by measuring the impeller speed once, that is, the speed after the impeller is affected by oil stains. The speed sensor can be, but is not limited to, a Hall sensor, etc. This embodiment does not make special restrictions on this.

[0056] Before determining the first change value of the impeller speed according to the first speed, the initial speed of the impeller is obtained. The initial speed of the impeller is the speed that the impeller can reach during operation when leaving the factory, or the impeller operation speed that can be detected after being cleaned. The initial speed of the impeller can be marked when leaving the factory, or can be detected in real time when used for the first time.

[0057] Specifically, let the initial speed N0 of the impeller of the range hood and the first speed N1 of the impeller. The first change value ΔN of the impeller speed can be obtained based on the formula: ΔN=(N0 - N1) / N0×100%. It can be known that the first change value of the impeller speed can reflect the current oil stain state of the impeller.

[0058] On this basis, if the first change value is less than the first threshold, it means that the current oil stain state of the impeller has not reached the standard that needs to be cleaned, then it is determined that the range hood does not trigger the self-cleaning mode. Or, if the range hood has entered the self-cleaning mode and performed a cleaning at this time, the range hood can exit the self-cleaning mode at this time.

[0059] If the first change value is greater than or equal to the first threshold and less than the second threshold, it means that the current oil stain state of the impeller has reached the standard that needs to be cleaned, then it is determined that the self-cleaning mode of the range hood is the fast cleaning mode. It can be known that considering the oil stain state of the impeller, the fast cleaning mode can use a cleaning liquid at room temperature to complete the cleaning of the oil stains on the impeller, that is, the cleaning liquid at the first temperature is the cleaning liquid at room temperature. The specific value of the first temperature can be selected and set according to the actual room temperature or other set temperatures. This embodiment does not make special restrictions on this; in addition, in order to achieve faster cleaning, the cleaning liquid at the first temperature can also be a cleaning liquid higher than room temperature, then the fast cleaning mode uses the cleaning liquid at the first temperature to achieve the purpose of fast cleaning.

[0060] It can be known that the first threshold and the second threshold can be selected and set according to the impeller oil stain cleaning standard. This embodiment does not make special restrictions on this. Among them, the first threshold is less than the second threshold. Optionally, the first threshold can be 5%, and the second threshold can be 8%.

[0061] If the first change value is greater than or equal to the second threshold, it indicates that the oil contamination state of the impeller at this time reaches the standard that needs to be cleaned, and the oil contamination state is relatively serious. In order to clean more thoroughly, the self-cleaning mode of the range hood is determined to be the deep cleaning mode. It can be known that considering the relatively serious oil contamination state of the impeller, the deep cleaning mode can use a high-temperature cleaning liquid to complete the cleaning of the oil on the impeller. That is, the cleaning liquid at the second temperature is the high-temperature cleaning liquid. The high-temperature cleaning liquid can be obtained by heating the cleaning liquid immediately after triggering the range hood to enter the deep cleaning mode. The specific value of the second temperature can be selected and set according to the cleaning liquid temperature. This embodiment does not make special restrictions on this, and the first temperature is less than the second temperature.

[0062] S120. After the range hood enters the self-cleaning mode, control the impeller to rotate, and during the rotation of the impeller, control the spraying of the cleaning liquid and control the cleaning component to start cleaning the impeller.

[0063] Specifically, after the range hood enters the fast cleaning mode, control the impeller to rotate in a cycle for the first set number of times. The first set number of times can be obtained through experiments according to the cleaning effect of the fast cleaning mode. This embodiment does not make special restrictions on this. Optionally, the first set number of times can be 3 times.

[0064] It can be known that in this embodiment, the rotation of the impeller can be the forward rotation of the impeller, the reverse rotation of the impeller, or the alternating forward and reverse rotation of the impeller. This embodiment does not make special restrictions on this.

[0065] Exemplarily, in order to obtain a better cleaning effect, the alternating forward and reverse rotation of the impeller can be adopted. Then control the impeller to rotate forward at 1200 rpm for 30 seconds, pause for 5 seconds, and then control the impeller to rotate backward at 1200 rpm for 30 seconds. This is defined as one cycle of the alternating forward and reverse rotation of the impeller. After triggering the range hood to enter the fast cleaning mode, the alternating forward and reverse rotation of the impeller can be controlled to cycle 3 times.

[0066] Furthermore, during the process of the impeller rotating in a cycle for the first set number of times, control the spraying of the cleaning liquid at the first temperature, that is, spray the normal-temperature cleaning liquid or the cleaning liquid higher than the normal temperature, and control the cleaning component to start cleaning the impeller. That is, the bristles on the cleaning component expand under the action of centrifugal force to start cleaning the impeller. At the same time, the cleaning component motor works to make the bristles move axially synchronously (it can be known that it just moves from the bottom of the impeller to the top of the impeller after 30 seconds), covering all the dead corners of the impeller. When one rotation of the impeller ends, the bristles contract under the action of the spring force.

[0067] In this embodiment, after triggering the range hood to enter the deep cleaning mode, considering the relatively serious oil contamination state of the impeller, the deep cleaning mode can use a high-temperature cleaning liquid to complete the cleaning of the oil on the impeller. Heat the temperature of the cleaning liquid to the second temperature, and control the cleaning liquid to reach the second temperature and maintain it for a set time length.

[0068] Among them, the set time length can be selected and set according to the required time for impeller cleaning. This embodiment does not make special restrictions on this. Optionally, the second temperature can be 75°C, and the set time length can be 2 minutes.

[0069] Furthermore, after triggering the range hood to enter the deep cleaning mode, control the impeller to rotate in a cycle for a second set number of times. The second set number of times can be obtained through experiments according to the cleaning effect of the deep cleaning mode. This embodiment does not make special restrictions on this. Among them, the first set number of times is less than the second set number of times. Optionally, the second set number of times can be 5 times.

[0070] Exemplarily, taking the impeller as an example of alternating forward and reverse rotation, heat the temperature of the cleaning liquid to 75°C, and control the temperature of the cleaning liquid to reach 75°C and last for 2 minutes. Then, further control the impeller to rotate forward at 1200 rpm for 30 seconds, pause for 5 seconds, and then control the impeller to rotate reverse at 1200 rpm for 30 seconds. This is defined as one cycle of alternating forward and reverse rotation of the impeller. After triggering the range hood to enter the deep cleaning mode, the impeller can be controlled to alternate forward and reverse rotation for 5 cycles.

[0071] Similarly, during the process of the impeller rotating in a cycle for the second set number of times, control the spraying of the cleaning liquid at the first temperature, that is, spray the normal-temperature cleaning liquid, and control the cleaning component to start cleaning the impeller, that is, the bristles on the cleaning component expand under the action of centrifugal force to start cleaning the impeller. At the same time, the motor of the cleaning component works to make the bristles move axially synchronously (it can be known that it just moves from the bottom of the impeller to the top of the impeller after 30 seconds), covering all the dead corners of the impeller. When one rotation of the impeller ends, the bristles contract under the action of the spring force.

[0072] It should be noted that considering the starting process of the impeller and saving the cost of the cleaning liquid, the cleaning liquid can be sprayed after the impeller rotates stably, or the cleaning liquid can be sprayed synchronously after the impeller starts to rotate. This embodiment does not make special restrictions on this.

[0073] S130. After the range hood performs a cleaning in the self-cleaning mode once, obtain the second rotation speed of the impeller, and determine the second change value of the impeller rotation speed according to the second rotation speed, so as to judge whether to clean the range hood again according to the second change value.

[0074] On this basis, after the range hood performs a cleaning in the fast cleaning mode or the deep cleaning mode once, obtain the second rotation speed of the impeller at this time. The second rotation speed of the impeller is the rotation speed of the impeller detected in real time by the rotation speed sensor installed on the impeller, that is, the rotation speed of the impeller after performing a cleaning once.

[0075] Similarly, the second change value of the impeller speed can be determined by the second speed of the impeller and the initial speed of the impeller. Specifically: ΔN1 = (N0 - N2) / N0 × 100%, where ΔN1 is the second change value of the impeller speed and N2 is the second speed of the impeller. It can be known that the second change value of the impeller speed can reflect the current oil contamination state of the impeller, that is, the oil contamination state of the impeller after a cleaning of the impeller is completed.

[0076] Specifically, whether the cleaning of the impeller is completed is judged by the magnitude relationship between the second change value of the impeller speed and the first threshold. If the second change value is less than the first threshold, it can indicate that the impeller cleaning is complete at this time, and then it is determined that the range hood exits the fast cleaning mode or the deep cleaning mode; if the second change value is greater than or equal to the first threshold, it can indicate that the cleaning of the impeller is still incomplete at this time, and then the cleaning times of the range hood are obtained, and whether to clean the range hood again is judged according to the cleaning times, so as to realize the cleaning of the range hood on demand.

[0077] Among them, the cleaning times of the range hood refer to the number of times the range hood performs self-cleaning through the self-cleaning mode, and are not limited to whether the range hood is in the fast cleaning mode or the deep cleaning mode. It can be known that the cleaning times are the number of times the range hood continuously performs cleaning, and the cleaning times can be counted and recorded by the range hood.

[0078] Furthermore, if the cleaning times reach the set times threshold, that is, the range hood has continuously performed cleaning for a relatively large number of times and still cannot meet the condition of thoroughly cleaning the impeller, it can indicate that the range hood may malfunction at this time, and then a fault information of the range hood is generated.

[0079] Among them, the fault information can be real-time fed back to the terminal device connected to the range hood or prompted through the display panel of the range hood. The fault information can be information in the form of prompt text or alarm indicator lights, etc. This embodiment does not make special restrictions on the specific display form of the fault information. The terminal device can be, but is not limited to, intelligent devices such as mobile phones and tablets, or application terminals such as application software. This embodiment does not make any restrictions on this.

[0080] Exemplarily, if a terminal device such as a mobile phone is communicatively connected to the range hood, after the terminal device such as a mobile phone receives the fault information of the range hood, the user of the range hood can view the oil contamination state of the range hood at this time through the terminal device such as a mobile phone, and can start the range hood through the terminal device such as a mobile phone to enter the fast cleaning mode or the deep cleaning mode again to perform an impeller cleaning, so as to realize the intelligent management of the range hood.

[0081] If the number of cleaning times does not reach the set number threshold, that is, the range hood can perform the above cleaning operation again at this time to clean the impeller again, that is, detect the impeller rotation speed of the range hood again, and repeat the above operation according to the impeller rotation speed to verify the cleaning effect of the range hood until the impeller cleaning requirements are met.

[0082] The set number threshold can be selected and set according to the impeller cleaning requirements. This embodiment does not make special restrictions on this. Optionally, the set number threshold can be 3 times. Exemplarily, if the number of cleaning times of the range hood reaches 3 times, and the second change value of the impeller of the range hood at this time is still greater than or equal to the first threshold, the fault information of the range hood can be generated.

[0083] In the technical solution of the embodiment of the present invention, the range hood includes an impeller and a cleaning component. The range hood cleaning control method includes: obtaining the first rotation speed of the impeller, and determining the first change value of the impeller rotation speed according to the first rotation speed, so as to judge whether the range hood enters the self-cleaning mode based on the first change value; when the range hood enters the self-cleaning mode, control the impeller to rotate, and during the rotation of the impeller, control the spraying of the cleaning liquid and control the cleaning component to start cleaning the impeller; after the range hood performs a cleaning in the self-cleaning mode, obtain the second rotation speed of the impeller, and determine the second change value of the impeller rotation speed according to the second rotation speed, so as to judge whether to clean the range hood again according to the second change value. The embodiment of the present invention solves the problem that the current fixed cleaning cycle for the range hood cannot be cleaned in time, resulting in high subsequent cleaning energy consumption and low cleaning efficiency, realizes the perception of the oil stain state and the adaptive switching of the cleaning mode, and balances the cleaning effect and energy consumption at the same time.

[0084] Based on the same inventive concept, Figure 2 It is a flowchart of a range hood cleaning control method provided by an embodiment of the present invention. On the basis of the above embodiment, this embodiment provides a process for the range hood to perform cyclic cleaning, and verifies the cleaning effect of the range hood in real time, and provides an optional implementation manner. As Figure 2 shown, the range hood cleaning control method includes:

[0085] S210. Obtain the first rotation speed of the impeller and the initial rotation speed of the impeller, and determine the first change value of the impeller rotation speed according to the initial rotation speed and the first rotation speed.

[0086] S220. Judge whether the range hood enters the self-cleaning mode based on the first change value, and execute step S230 or step S240 or step S250.

[0087] Specifically, if the first change value of the impeller is less than the first threshold, it is determined that the range hood does not trigger the self-cleaning mode or exits the self-cleaning mode, that is, step S250 is executed subsequently; if the first change value of the impeller is greater than or equal to the first threshold and the first change value of the impeller is less than the second threshold, it is determined that the self-cleaning mode of the range hood is the quick cleaning mode, that is, step S230 is executed subsequently; if the first change value of the impeller is greater than or equal to the second threshold, it is determined that the self-cleaning mode of the range hood is the deep cleaning mode, that is, step S240 is executed subsequently.

[0088] S230. If the first change value is greater than or equal to the first threshold and the first change value is less than the second threshold, determine that the self-cleaning mode of the range hood is the quick cleaning mode, and execute step S231.

[0089] S231. Control the impeller to rotate in a cycle for the first set number of times, and during the process of the impeller rotating in a cycle for the first set number of times, control the spraying of the cleaning liquid at the first temperature and control the cleaning component to start cleaning the impeller, and execute step S260.

[0090] S240. If the first change value is greater than or equal to the second threshold, determine that the self-cleaning mode of the range hood is the deep cleaning mode, and execute step S241.

[0091] S241. Heat the temperature of the cleaning liquid to the second temperature, and control the temperature of the cleaning liquid to reach the second temperature and last for the set time length.

[0092] S242. Control the impeller to rotate in a cycle for the second set number of times, and during the process of the impeller rotating in a cycle for the second set number of times, control the spraying of the cleaning liquid at the second temperature and control the cleaning component to start cleaning the impeller, and execute step S260.

[0093] S250. If the first change value is less than the first threshold, determine that the range hood does not trigger the self-cleaning mode or exits the self-cleaning mode.

[0094] S260. Drain the waste liquid and control the impeller to spin dry.

[0095] It can be known that during a cleaning process when the range hood executes in the quick cleaning mode or the deep cleaning mode, when draining the waste liquid generated by the cleaning, an oil collecting cup can be set at the bottom of the volute of the range hood, then the waste liquid is introduced into the oil collecting cup, and at the same time, with the cooperation of the high-speed spinning dry of the impeller, the water residue amount on the impeller is made < 0.5 mL.

[0096] S270. After the range hood executes a cleaning in the quick cleaning mode or the deep cleaning mode, obtain the second rotational speed of the impeller, and determine the second change value of the impeller rotational speed according to the second rotational speed.

[0097] S280. Determine whether the second change value is less than the first threshold. If so, execute step S250; if not, execute step S290.

[0098] S290. Determine that the cleaning times of the range hood are incremented by 1.

[0099] S291. Determine whether the cleaning times of the range hood reach the set times threshold. If so, execute step S292; if not, execute step S210.

[0100] S292. Generate a fault message of the range hood.

[0101] In the technical solution of the embodiment of the present invention, when the change in the impeller rotation speed is detected, the range hood is triggered to enter the self - cleaning mode. If the fast - cleaning mode is entered, the cleaning liquid at the first temperature is controlled to be sprayed. If the deep - cleaning mode is entered, the temperature of the cleaning liquid is heated to the second temperature, and the temperature of the cleaning liquid is controlled to reach the second temperature and continue for the set time length, and then the cleaning liquid at the second temperature is controlled to be sprayed to soften the oil stains on the impeller. Meanwhile, the impeller is controlled to rotate in a cycle for the first set number of times, and during the process of the impeller rotating in a cycle, the spraying of the cleaning liquid and the start of the cleaning of the impeller by the cleaning component are synchronously controlled. When the impeller rotates at a high speed, the micron - level amplitude generated by the air - flow disturbance and mechanical vibration makes the contact surface between the brush bristles and the blade form a high - frequency friction, which can peel off the oil stains through micro - vibration, breaking through the limitation that traditional electric - heating cleaning can only handle local oil stains and making the cleaning more thorough. On the other hand, the mixed waste liquid generated during the cleaning process is directed to the oil - collecting cup at the bottom of the volute, and with the high - speed drying program of 2000 rpm at the end section, the water residue amount is less than 0.5 mL. This application innovatively combines centrifugal mechanical cleaning and rotational - speed coupling control, improving the cleaning coverage rate and reducing energy consumption compared with traditional electric - heating technology.

[0102] Based on the same inventive concept, Figure 3 is a schematic structural diagram of a range - hood cleaning control device provided by an embodiment of the present invention. The range hood includes an impeller and a cleaning component. As Figure 3 shown, the range - hood cleaning control device includes:

[0103] A self - cleaning mode determination module 310, configured to execute obtaining the first rotation speed of the impeller and determining the first change value of the impeller rotation speed based on the first rotation speed, so as to determine whether the range hood enters the self - cleaning mode based on the first change value;

[0104] An impeller cleaning control module 320, configured to execute controlling the rotation of the impeller after the range hood enters the self - cleaning mode, and during the rotation of the impeller, controlling the spraying of the cleaning liquid and controlling the cleaning component to start cleaning the impeller;

[0105] The range hood cleaning control module 330 is used to, after the range hood performs a cleaning in the self - cleaning mode once, obtain the second rotational speed of the impeller, and determine the second change value of the impeller rotational speed according to the second rotational speed, so as to judge whether to clean the range hood again according to the second change value.

[0106] Optionally, the range hood cleaning control device further includes:

[0107] The impeller initial rotational speed acquisition module is used to obtain the initial rotational speed of the impeller;

[0108] Determining the first change value of the impeller rotational speed according to the first rotational speed is specifically used for:

[0109] Determining the first change value of the impeller rotational speed according to the initial rotational speed and the first rotational speed.

[0110] Optionally, determining the self - cleaning mode of the range hood according to the first change value is specifically used for:

[0111] If the first change value is less than the first threshold, it is determined that the range hood does not trigger the self - cleaning mode or exits the self - cleaning mode;

[0112] If the first change value is greater than or equal to the first threshold and less than the second threshold, it is determined that the self - cleaning mode of the range hood is the fast cleaning mode;

[0113] If the first change value is greater than or equal to the second threshold, it is determined that the self - cleaning mode of the range hood is the deep cleaning mode;

[0114] Wherein, the first threshold is less than the second threshold.

[0115] Optionally, determining that the self - cleaning mode of the range hood is the fast cleaning mode or the deep cleaning mode;

[0116] The impeller cleaning control module 320 is specifically used for:

[0117] After the range hood enters the fast cleaning mode, controlling the impeller to rotate in a cycle for the first set number of times, and during the process of the impeller rotating in a cycle for the first set number of times, controlling the spraying of the cleaning liquid at the first temperature and controlling the cleaning component to start cleaning the impeller; or,

[0118] After the range hood enters the deep cleaning mode, controlling the impeller to rotate in a cycle for the second set number of times, and during the process of the impeller rotating in a cycle for the second set number of times, controlling the spraying of the cleaning liquid at the second temperature and controlling the cleaning component to start cleaning the impeller;

[0119] Wherein, the first set number of times is less than the second set number of times, and the first temperature is less than the second temperature.

[0120] Optionally, the range hood cleaning control device further includes:

[0121] A cleaning liquid heating module is used to heat the temperature of the cleaning liquid to a second temperature and control the cleaning liquid to maintain the second temperature for a set time length.

[0122] Optionally, it is determined whether to clean the range hood again according to a second change value, specifically for:

[0123] If the second change value is less than a first threshold, it is determined that the range hood exits the self-cleaning mode;

[0124] If the second change value is greater than or equal to the first threshold, the number of cleaning times of the range hood is obtained, and it is determined whether to clean the range hood again according to the number of cleaning times.

[0125] Optionally, it is determined whether to clean the range hood again according to the number of cleaning times, specifically for:

[0126] If the number of cleaning times reaches a set number threshold, fault information of the range hood is generated;

[0127] If the number of cleaning times does not reach the set number threshold, the impeller rotation speed of the range hood is detected again.

[0128] The range hood cleaning control device provided by the embodiments of the present invention can execute the range hood cleaning control method provided by any embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the range hood cleaning control method.

[0129] Based on the same inventive concept, Figure 4 FIG. is a schematic structural diagram of a range hood provided by an embodiment of the present invention. Refer to Figure 4 As shown, the range hood includes an impeller 10, a cleaning component 20 fixed on the impeller 10, and a range hood cleaning control device according to an embodiment of the present invention. The cleaning component 20 moves at the same rotation speed as the impeller 10; refer to Figure 5 As shown, the cleaning component 20 includes a motor 21, a bracket 22, a base 23, and brush bristles 24. The bracket 22 is connected to the base 23 and the push shaft of the motor 21. After the range hood exits the self-cleaning mode, the brush bristles 24 are fixedly contracted inside the base 23, that is, the brush bristles 24 are in a contracted state at this time.

[0130] Among them, the brush bristles 24 can be retractable nylon brush bristles, that is, nylon brush bristles with adjustable axes. Each cluster of brush bristles 24 is composed of 50-100 independent nylon filaments, and the ends are treated with spherical passivation. When contacting the blade surface of the impeller 10, the brush bristle clusters automatically bend according to the local curvature to form three-dimensional conformal cleaning. At the same time, the brush bristles 24 are distributed in a stepped manner, divided into three levels of length: long, medium, and short, and can clean the impeller more thoroughly.

[0131] The base 23 contains a plurality of grooves, and a spring-preloaded brush 24 bracket is embedded in each groove. At the same time, there is a spring buckle to ensure that the brush 24 is fixed and retracted inside the base 23 in the non-cleaning mode.

[0132] Based on the above embodiments, continue to refer to Figure 4 As shown, the range hood further includes a smoke collecting cavity 30, a water storage box 40, a water pump 50, a cleaner addition box 60, a water pipe 70, a volute 80, and a nozzle 90; the water storage box 40 is fixed on the smoke collecting cavity 30, the water pump 50 is fixed behind the water storage box 40, the cleaner addition box 60 is fixed above the water storage box 40, the water pipe 70 passes under the water storage box 40 and through the volute 80, and the nozzle 90 is at the end of the water pipe 70 for spraying the cleaning liquid on the impeller 10; a heating module and a temperature sensor are arranged inside the water storage box 40, the heating module is used to heat the cleaning liquid, the temperature sensor is used to detect the temperature of the cleaning liquid, and at the same time, it can provide a power-off protection function when the temperature is too high according to the temperature of the cleaning liquid.

[0133] In this embodiment, refer to Figure 6 As shown, when the range hood is triggered to enter the fast cleaning mode or the deep cleaning mode, the spring buckle of the base in the cleaning component is loosened. At this time, the brush has the freedom of radial movement. At this time, the impeller runs alternately forward and backward at 1200 rpm, and uses centrifugal force to drive the axially adjustable nylon brush (with a temperature resistance of 200 °C) to expand radially (the degree of expansion is also related to the magnitude of the centrifugal force, that is, the impeller speed, to achieve self-adaptation of the brush pressure at different speeds and avoid damage to the blade caused by excessive friction), directly rubbing the inner and outer sides of the impeller blade. At the same time, the motor in the cleaning component works, and the brush moves axially to cover the dead corners of the impeller, that is, the brush is in an expanded state at this time. Further, when the impeller rotates at a high speed, the micron-level amplitude generated by the air flow disturbance and mechanical vibration makes the contact surface between the brush and the impeller blade form a high-frequency friction, which can peel off the oil stains through microscopic vibration, breaking through the limitation that traditional electric heating cleaning can only handle local oil stains and making the cleaning more thorough.

[0134] Based on the same inventive concept, an embodiment of the present invention provides a range hood cleaning control system, as Figure 7As shown, the range hood cleaning control system includes at least one processor 411 and a memory communicatively connected to the at least one processor 411, such as a read-only memory (ROM 412), a random access memory (RAM 413), etc. Among them, the memory stores a computer program executable by the at least one processor. The processor 411 can execute various appropriate actions and processes according to the computer program stored in the read-only memory (ROM 412) or the computer program loaded from the storage unit 418 into the random access memory (RAM 413). In the RAM 413, various programs and data required for the operation of the range hood cleaning control system 410 can also be stored. The processor 411, the ROM 412, and the RAM 413 are connected to each other through a bus 414. The I / O (input / output) interface 415 is also connected to the bus 414.

[0135] Multiple components in the range hood cleaning control system 410 are connected to the I / O interface 415, including: an input unit 416, such as a keyboard, a mouse, etc.; an output unit 417, such as various types of displays, speakers, etc.; a storage unit 418, such as a disk, an optical disc, etc.; and a communication unit 419, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 419 allows the range hood cleaning control system 410 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0136] The processor 411 can be various general and / or special processing components with processing and computing capabilities. Some examples of the processor 411 include but are not limited to a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 411 executes the various methods and processes described above, such as the range hood cleaning control method.

[0137] In some embodiments, the range hood cleaning control method can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as the storage unit 418. In some embodiments, part or all of the computer program can be loaded and / or installed onto the range hood cleaning control system 410 via the ROM 412 and / or the communication unit 419. When the computer program is loaded into the RAM 413 and executed by the processor 411, one or more steps of the range hood cleaning control method described above can be executed. Alternatively, in other embodiments, the processor 411 can be configured to execute the range hood cleaning control method in any other appropriate manner (for example, by means of firmware).

[0138] The various embodiments of the systems and techniques described above in this specification can be implemented in digital electronic circuitry, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on a chip (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: being implemented in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which may be a special-purpose or general-purpose programmable processor that receives data and instructions from, and transmits data and instructions to, a storage system, at least one input device, and at least one output device.

[0139] The computer programs for implementing the methods of the present invention can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions / operations specified in the flowchart and / or block diagram to be implemented. The computer programs can be executed entirely on the machine, partly on the machine, as a stand-alone software package partly on the machine and partly on a remote machine or entirely on the remote machine or server.

[0140] In the context of the present invention, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer-readable storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, the computer-readable storage medium can be a machine-readable signal medium. More specific examples of the machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0141] To provide interaction with a user, the systems and techniques described herein can be implemented on a range hood cleaning control system that has: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which the user can provide input to the range hood cleaning control system. Other kinds of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0142] The systems and techniques described herein can be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer having a graphical user interface or a web browser through which the user can interact with an implementation of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected to each other by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local area network (LAN), wide area network (WAN), blockchain network, and the Internet.

[0143] The computing system can include a client and a server. The client and the server are generally remote from each other and typically interact through a communication network. The relationship between the client and the server is generated by computer programs that run on the respective computers and have a client - server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system and solves the defects of difficult management and weak business scalability existing in traditional physical hosts and VPS services.

[0144] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps recited in the present invention can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved, and no limitation is made herein.

[0145] The above specific embodiments do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A cleaning control method for a range hood, the range hood including an impeller and a cleaning assembly, characterized in that, The oil fume extractor cleaning control method includes: Obtain the first rotation speed of the impeller, and determine the first change value of the impeller rotation speed based on the first rotation speed, so as to judge whether the oil fume extractor enters the self-cleaning mode based on the first change value; After the oil fume extractor enters the self-cleaning mode, control the impeller to rotate, and during the rotation of the impeller, control the spraying of the cleaning liquid and control the cleaning component to start cleaning the impeller; After the oil fume extractor performs a cleaning in the self-cleaning mode, obtain the second rotation speed of the impeller, and determine the second change value of the impeller rotation speed based on the second rotation speed, so as to judge whether to clean the oil fume extractor again according to the second change value.

2. The method for controlling the cleaning of an oil fume extractor according to claim 1, wherein Before determining the first change value of the impeller rotation speed based on the first rotation speed of the impeller, it further includes: Obtain the initial rotation speed of the impeller; Determining the first change value of the impeller rotation speed based on the first rotation speed includes: Determine the first change value of the impeller rotation speed based on the initial rotation speed and the first rotation speed.

3. The range hood cleaning control method according to claim 1, characterized in that: Judging whether the oil fume extractor enters the self-cleaning mode based on the first change value includes: If the first change value is less than the first threshold, it is determined that the oil fume extractor does not trigger the self-cleaning mode or exits the self-cleaning mode; If the first change value is greater than or equal to the first threshold and the first change value is less than the second threshold, it is determined that the self-cleaning mode of the oil fume extractor is the quick cleaning mode; If the first change value is greater than or equal to the second threshold, it is determined that the self-cleaning mode of the oil fume extractor is the deep cleaning mode; Wherein, the first threshold is less than the second threshold.

4. The range hood cleaning control method according to claim 1, characterized in that: Determine that the self-cleaning mode of the oil fume extractor is the quick cleaning mode or the deep cleaning mode; After the oil fume extractor enters the self-cleaning mode, control the impeller to rotate, and during the rotation of the impeller, control the spraying of the cleaning liquid and control the cleaning component to start cleaning the impeller, including: After the oil fume extractor enters the quick cleaning mode, control the impeller to rotate in a cycle for the first set number of times, and during the process of the impeller rotating in a cycle for the first set number of times, synchronously control the spraying of the cleaning liquid at the first temperature and control the cleaning component to start cleaning the impeller; or, After the oil fume extractor enters the deep cleaning mode, control the impeller to rotate in a cycle for the second set number of times, and during the process of the impeller rotating in a cycle for the second set number of times, synchronously control the spraying of the cleaning liquid at the second temperature and control the cleaning component to start cleaning the impeller; Wherein, the first set number of times is less than the second set number of times, and the first temperature is less than the second temperature.

5. The method for controlling the cleaning of an oil fume purifier according to any one of claims 1-4, characterized in that, Before controlling the impeller to rotate, it further includes: Heat the temperature of the cleaning liquid to the second temperature, and control the temperature of the cleaning liquid to reach the second temperature and last for a set time length.

6. The method for controlling the cleaning of a range hood according to claim 1, wherein Judging whether to clean the oil fume extractor again according to the second change value includes: If the second change value is less than the first threshold, it is determined that the oil fume extractor exits the self-cleaning mode; If the second change value is greater than or equal to the first threshold value, obtain the cleaning times of the range hood, and determine whether to clean the range hood again according to the cleaning times.

7. The method for controlling the cleaning of an oil fume extractor according to claim 6, wherein Determining whether to clean the range hood again according to the cleaning times includes: If the cleaning times reach the set times threshold value, generate the fault information of the range hood; If the cleaning times do not reach the set times threshold value, detect the impeller rotation speed of the range hood again.

8. A cleaning control device for a range hood, the range hood comprising an impeller and a cleaning assembly, characterized in that, The range hood cleaning control device includes: A self-cleaning mode determination module, configured to obtain the first rotation speed of the impeller and determine the first change value of the impeller rotation speed according to the first rotation speed, so as to judge whether the range hood enters the self-cleaning mode based on the first change value; An impeller cleaning control module, configured to control the impeller to rotate after the range hood enters the self-cleaning mode, and during the rotation of the impeller, control the spraying of the cleaning liquid and control the cleaning component to start cleaning the impeller; A range hood cleaning control module, configured to obtain the second rotation speed of the impeller after the range hood performs a cleaning in the self-cleaning mode, and determine the second change value of the impeller rotation speed according to the second rotation speed, so as to judge whether to clean the range hood again according to the second change value.

9. A range hood, characterized in that, The range hood includes an impeller, a cleaning component fixed on the impeller, and the range hood cleaning control device as claimed in claim 8; The cleaning component includes a motor, a bracket, a base, and bristles. The bracket is connected to the base and the push shaft of the motor, and the bristles are fixedly retracted inside the base after the range hood exits the self-cleaning mode.

10. The range hood according to claim 9, characterized in that, The range hood further includes a smoke collecting chamber, a water storage box, a water pump, a detergent adding box, a water pipe, a volute, and a nozzle; The water storage box is fixed on the smoke collecting chamber, the water pump is fixed behind the water storage box, the detergent adding box is fixed above the water storage box, the water pipe passes under the water storage box and through the volute, and the nozzle is at the end of the water pipe for spraying the cleaning liquid on the impeller; A heating module and a temperature sensor are arranged inside the water storage box. The heating module is used to heat the cleaning liquid, and the temperature sensor is used to detect the temperature of the cleaning liquid.

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