Cleaning method of range hood

Abstract

The invention discloses a cleaning method of a range hood, impeller blades and the inner wall of an air cabinet are cleaned at the same time through joint cooperative action of a water medium and a heating film, the method is simple and feasible, and the cleaning effect is effectively improved by cleaning fan blades and the inner wall of a fan volute at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a method for cleaning a range hood. Background Art

[0002] After a range hood has been used for a while, the impeller and the inner surface of the volute will absorb grease. If left uncleaned for a long time, this grease will accumulate, affecting the range hood's performance and creating an unpleasant odor. Currently, automatic range hood cleaning and self-cleaning technologies are becoming more common in the industry. These technologies typically utilize forward and reverse motor cleaning, water-based cleaning, and heated membrane dry cleaning.

[0003] First, the existing motor forward and reverse automatic cleaning technology can only clean the oil stains on the impeller blades, but cannot clean the oil stains on the inner wall of the wind cabinet;

[0004] Secondly, the existing heating film dry cleaning technology can only clean the oil stains on the inner wall of the wind cabinet, but cannot clean the oil stains on the impeller.

[0005] In addition, the existing water medium cleaning technology, cold water washing is mainly used to clean the oil stains on the impeller blades, and the cleaning level of the oil stains on the inner wall of the wind cabinet is not high; while steam washing can clean the oil stains on the blades and the wall of the wind cabinet cup, but the overall cost is higher. Summary of the Invention

[0006] The present invention aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the present invention proposes a method for cleaning a range hood. The method is simple and feasible, and effectively improves the cleaning effect by cleaning the fan blades and the inner wall of the fan volute at the same time.

[0007] The above purpose is achieved through the following technical solutions:

[0008] A method for cleaning a range hood, the range hood comprising a fan, a heating film being provided on a volute enclosure of the fan, the method comprising the following steps:

[0009] Entering the cleaning preparation stage, the heating film is started to heat the volute enclosure, and the fan is started to rotate;

[0010] After the first preset working time, the hot melt oil stage is entered, the heating film is continuously started, the fan is jogged in a clockwise direction, and the water pump intermittently pumps water according to the first rule;

[0011] After the second preset working time, the flushing phase is entered, the heating film is continuously started, the fan is operated alternately in the clockwise and counterclockwise directions, and the water pump intermittently pumps water according to the second rule and obtains the actual current value of the water pump;

[0012] Comparing the actual current value with a preset current value, and determining a timing to enter the air-drying stage based on the comparison result and / or the duration of the rinsing stage;

[0013] After entering the air-drying stage, the heating film and the water pump are turned off, and the fan is controlled to run in a clockwise direction for a predetermined time at different speeds, thereby completing the cleaning work of the range hood.

[0014] In some embodiments, the step of entering the hot melt oil stage after the first preset working time, continuously starting the heating film, the fan jogging in a clockwise direction, and the water pump intermittently pumping water according to the first rule includes:

[0015] After the first preset working time, the hot melt oil stage is entered, and the heating film is continuously activated;

[0016] The fan rotates in a clockwise direction, and at the same time the water pump is started to pump water, and the water pump is turned off after a first preset water spraying time.

[0017] After a first preset inching time, the fan is turned off to discharge the sewage in the range hood;

[0018] After the first preset drainage time, the fan is started again to run in a clockwise direction, and the water pump is started to pump water. This cycle is repeated until the flushing stage is entered after the second preset working time.

[0019] In some embodiments, the step of entering the flushing stage after the second preset working time, continuously starting the heating film, the fan operating alternately in a clockwise direction and a counterclockwise direction, and the water pump intermittently pumping water according to a second rule, and obtaining the actual current value of the water pump includes:

[0020] After the second preset working time, the flushing phase is entered, and the heating film is continuously activated;

[0021] The fan rotates in a clockwise direction, and at the same time the water pump is started to pump water, and the water pump is turned off after the second preset water spraying time.

[0022] After the second preset inching time, the fan runs in the counterclockwise direction, and the water pump is started again to pump water. After the second preset water spraying time, the water pump is turned off again;

[0023] After the second preset inching time, the current value of the water pump is detected to obtain the actual current value of the water pump.

[0024] In some embodiments, the step of comparing the actual current value with a preset current value and determining the timing of entering the air-drying stage based on the comparison result and / or the duration of the rinsing stage includes:

[0025] Determining whether the actual current value is less than the preset current value;

[0026] If yes, then the air-drying stage is entered; if no, then it is determined whether the continuous working time of the rinsing stage reaches a third preset working time;

[0027] If yes, the process enters the air-drying stage; if no, the process loops back to the flushing stage to control the operation of the fan and the water pump.

[0028] In some embodiments, the step of controlling the fan to run clockwise at different speed levels for a predetermined time to complete the cleaning of the range hood includes:

[0029] The fan is pre-set with a plurality of different resistance access gears, and each gear is divided into a first gear, a second gear, and a third gear in order from small to large according to the speed of the fan;

[0030] The fan rotates in a clockwise direction according to the third gear;

[0031] After the first preset operation time, the fan operates in the clockwise direction according to the second gear;

[0032] After the second preset operation time, the fan operates in the clockwise direction according to the first gear;

[0033] After the third preset running time, the fan is turned off.

[0034] In some embodiments, the first preset operation duration is greater than the second preset operation duration, and the second preset operation duration is less than the first preset operation duration.

[0035] In some embodiments, the first preset operating time is greater than the first preset operating time.

[0036] In some embodiments, the steps after completing the cleaning of the range hood further include:

[0037] The buzzer sends out an alarm message.

[0038] In some embodiments, the pumping operation time of the water pump during the flushing stage is longer than the pumping operation time of the water pump during the hot melt oil stage.

[0039] In some embodiments, the first preset working time is less than the second preset working time, and the second preset working time is greater than the third preset working time.

[0040] Compared with the prior art, the present invention has at least the following beneficial effects:

[0041] 1. The range hood cleaning method of the present invention is simple and feasible, and can effectively improve the cleaning effect by cleaning the fan blades and the inner wall of the fan volute at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0043] Figure 1 1 is a flow chart of a range hood cleaning method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0044] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. The components of the embodiments of the present invention can be arranged and designed in various configurations.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but merely represents selected embodiments of the invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort shall fall within the scope of the technical solutions claimed by the present invention.

[0046] Example:

[0047] like Figure 1 As shown, this embodiment provides a method for cleaning a range hood, which simultaneously cleans the impeller blades and the inner wall of the wind cabinet by utilizing the coordinated action of the water medium and the heating film. The method is simple and feasible, and effectively improves the cleaning effect by simultaneously cleaning the fan blades and the inner wall of the fan volute.

[0048] In this embodiment, the range hood includes a fan, and a heating film is provided on the volute enclosure of the fan. Specifically, a heating film is provided on the outer wall of the volute enclosure, so that the volute enclosure is heated by the heating work of the heating film, thereby achieving the purpose of softening or melting the oil stains on the inner wall of the volute enclosure. A motor is provided at the middle position of the volute enclosure, and an impeller is provided at the output end of the motor. A nozzle is provided on the volute enclosure, one end of the nozzle is connected to the external water supply through a water pump, and the other end is provided corresponding to the inner wall of the volute enclosure and the impeller, so that the nozzle sprays water to the inner wall of the volute enclosure and the impeller. Specifically, during the cleaning process First, start the heating film and energize it to heat the inner wall of the volute enclosure, so as to soften / melt the oil stains on the inner wall of the volute enclosure. At the same time, the water pump intermittently provides small doses of water. When the water is sprayed on the inner wall of the volute enclosure, it is heated by the conductive heat of the heating film and turned into steam. Through the conductive heat of the steam and the radiant heat of the heating film, the oil stains on the impeller blades can be smoked, thereby achieving the effect of softening the oil stains on the impeller. When the oil stains on the impeller blades are softened to a certain extent, the water pump pumps water normally to flush the oil stains on the impeller blades and the inner wall of the volute enclosure, thereby completing the cleaning work of the range hood.

[0049] Specifically, the range hood cleaning method in this embodiment includes the following steps:

[0050] Step S101, entering the cleaning preparation stage, starting the heating film to heat the volute enclosure, and starting the fan to rotate.

[0051] In this embodiment, the range hood is started to enter the cleaning preparation stage, the heating film is started to heat the volute enclosure to soften the oil on the volute enclosure, and the fan is started to rotate, and the motor speed of the fan is preferably controlled to be 850±50r / min. At this time, in the cleaning preparation stage, the water pump is always in the off state, so that the heating film can better soften the oil on the volute enclosure and impeller blades.

[0052] Step S102, until the first preset working time has passed and the hot melt oil stage is entered, the heating film is continuously started, the fan is jogged in a clockwise direction, and the water pump intermittently pumps water according to the first rule.

[0053] In this embodiment, when the range hood is started to enter the cleaning preparation stage, a countdown is first performed synchronously according to the first preset working time, and then the hot melt oil stage is entered after the first preset working time.

[0054] Preferably, until the hot melt oil stage is entered after the first preset working time, the heating film is continuously started, the fan is jogged in a clockwise direction, and the water pump intermittently pumps water according to the first rule. The steps include:

[0055] After the first preset working time, it enters the hot melt oil stage and continuously starts the heating film;

[0056] The fan runs in a clockwise direction and the water pump is started to pump water until the first preset water spraying time has passed and the water pump is turned off;

[0057] After the first preset inching time, the fan is turned off to discharge the sewage in the range hood;

[0058] After the first preset drainage time, the fan is started again to run in a clockwise direction, and the water pump is started to pump water. This cycle continues until the flushing stage is entered after the second preset working time.

[0059] In this embodiment, after entering the hot melting oil stage, the countdown is first performed synchronously according to the second preset working time and the first preset inching time, and the heating film is kept on to enable the heating film to continue heating, and the volute enclosure is continued to be heated by the heating film, so as to soften the oil stains on the volute enclosure and impeller blades. The fan continues to operate in a clockwise direction, and at the same time, the water pump is started to pump water, and the countdown is performed synchronously according to the first preset water spraying time. After the first preset water spraying time, the water pump is turned off, so that the water pump intermittently provides small doses of water. When the water is sprayed on the inner wall of the volute enclosure, it is heated by the conductive heat of the heating film and becomes high-temperature steam. The conductive heat of the high-temperature steam and the radiant heat of the heating film are used to fumigate the oil stains on the impeller blades, thereby achieving the effect of softening the oil stains on the impeller blades. After the first preset inching time, the fan is turned off to discharge the sewage in the range hood outward or into the water cup, and the countdown is performed synchronously according to the first preset drainage time.

[0060] After the first preset drainage time, the fan is started again to run in the clockwise direction, and the water pump is started to pump water. In addition, since the second preset working time is respectively greater than the first preset inching time, the first preset water spraying time, and the first preset drainage time, the fan and the water pump cycle the above work, and the cycle continues until the second preset working time, and then the flushing stage is entered.

[0061] Step S103, until the second preset working time is reached and the flushing stage is entered, the heating film is continuously started, the fan rotates alternately in the clockwise and counterclockwise directions, and the water pump intermittently pumps water according to the second rule and obtains the actual current value of the water pump.

[0062] Step S104 : comparing the actual current value with the preset current value, and determining the timing of entering the air-drying stage according to the comparison result and / or the continuous working time of the flushing stage.

[0063] In this embodiment, when entering the hot melt oil stage, the countdown is first performed synchronously according to the second preset working time, and the flushing stage is entered after the second preset working time.

[0064] Preferably, until the flushing stage is entered after the second preset working time, the heating film is continuously started, the fan rotates alternately in the clockwise and counterclockwise directions, and the water pump intermittently pumps water according to the second rule and the steps of obtaining the actual current value of the water pump include:

[0065] After the second preset working time, it enters the flushing stage and continuously activates the heating film;

[0066] The fan runs in clockwise direction and the water pump is started to pump water. After the second preset water spraying time, the water pump is turned off:

[0067] After the second preset inching time, the fan runs in the counterclockwise direction, and the water pump is started again to pump water. After the second preset water spraying time, the water pump is turned off again;

[0068] After the second preset inching time, the current value of the water pump is detected to obtain the actual current value of the water pump.

[0069] Furthermore, the step of comparing the actual current value with the preset current value and determining the timing of entering the air-drying stage according to the comparison result and / or the continuous working time of the rinsing stage includes:

[0070] Determine whether the actual current value is less than the preset current value;

[0071] If yes, then the air-drying stage is entered; if no, then it is determined whether the continuous working time of the rinsing stage reaches the third preset working time;

[0072] If yes, it enters the air-drying stage; if not, it enters the circulating flushing stage, controlling the operation of the fan and water pump.

[0073] More preferably, the pumping operation time of the water pump during the flushing stage is longer than the pumping operation time of the water pump during the hot melt oil stage.

[0074] In this embodiment, since the pumping operation time of the water pump in the flushing stage is longer than the pumping operation time of the water pump in the hot melt oil stage, the second preset water spraying time is longer than the first preset water spraying time.

[0075] In this embodiment, after entering the flushing stage, the countdown is first performed synchronously according to the third preset working time and the second preset inching time, and the heating film is kept on to allow the heating film to continue to heat the volute panel, and the heating film continues to heat the volute panel to soften the oil stains on the volute panel and impeller blades. The fan continues to run in a clockwise direction, and the water pump is started to pump water, and the countdown is performed synchronously according to the second preset water spraying time. The water pump is turned off after the second preset water spraying time, so that the water pump sprays the volute panel and impeller through the nozzle to perform cleaning work. After the second preset inching time, the fan is controlled to run in the counterclockwise direction. When the fan runs in the counterclockwise direction, the countdown is performed again according to the second preset inching time. At the same time, the water pump is started again to pump water to continue the spray cleaning work on the volute enclosure and impeller. The countdown is performed according to the second preset water spraying time. After the countdown of the second preset water spraying time ends again, the water pump is turned off. After the second preset inching time, the fan is turned off and stopped, and then the current value of the water pump is detected.

[0076] In this embodiment, the water pump current value is detected to obtain the actual current value. A determination is then made as to whether the actual current value is less than a preset current value. If so, the process proceeds directly to the next cleaning stage, i.e., the air-drying stage. If not, a determination is made as to whether the countdown to the third preset operating time has expired. After entering the rinsing stage, a countdown is first performed synchronously according to the third preset operating time. Thus, a determination is made as to whether the countdown to the third preset operating time has expired. If so, the process proceeds to the next cleaning stage, i.e., the air-drying stage. If not, the process returns to control the fan to operate in a clockwise direction again.

[0077] Step S105, after entering the air-drying stage, the heating film and the water pump are turned off, and the fan is controlled to run in a clockwise direction for a predetermined time according to the speed of different gears, thereby completing the cleaning work of the range hood.

[0078] In this embodiment, when entering the flushing stage, the countdown is first performed synchronously according to the third preset working time, and then the air-drying stage is entered after the third preset working time.

[0079] Preferably, the step of controlling the fan to run in a clockwise direction for a predetermined time at different speed levels to complete the cleaning of the range hood includes:

[0080] The fan is pre-set with multiple different resistance access gears, and each gear is divided into the first gear, the second gear, and the third gear in order from small to large according to the fan speed;

[0081] The fan runs in clockwise direction according to the third gear;

[0082] After the first preset operation time, the fan runs in the clockwise direction according to the second gear;

[0083] After the second preset operation time, the fan runs in the clockwise direction according to the first gear;

[0084] After the third preset running time, the fan is turned off.

[0085] In this embodiment, the first preset operating time is greater than the second preset operating time, and the second preset operating time is less than the first preset operating time. More preferably, the first preset operating time is greater than the first preset operating time.

[0086] Furthermore, the steps after completing the cleaning of the range hood also include:

[0087] The buzzer sends out an alarm message.

[0088] In this embodiment, after the third preset operating time, the fan is turned off, thereby completing the cleaning work of the range hood, and then the buzzer sends out an alarm message, that is, the buzzer sounds once every one second, and the buzzer prompt sound is 5 times, each sound lasts for 0.5 seconds, and the frequency is 1Hz. This indicates that the cleaning work of the range hood has been completed, and the range hood is automatically turned off to enter the standby state.

[0089] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all fall within the scope of protection of the present invention.

Claims

1. A method for cleaning a range hood, characterized in that: The range hood includes a fan, and a heating film is provided on the volute enclosure of the fan. The cleaning method includes the following steps: Entering the cleaning preparation stage, the heating film is started to heat the volute enclosure, and the fan is started to rotate; After the first preset working time, the hot melt oil stage is entered, the heating film is continuously started, the fan is jogged in a clockwise direction, and the water pump intermittently pumps water according to the first rule; After the second preset working time, the flushing phase is entered, the heating film is continuously started, the fan is operated alternately in the clockwise and counterclockwise directions, and the water pump intermittently pumps water according to the second rule and obtains the actual current value of the water pump; Comparing the actual current value with a preset current value, and determining a timing to enter the air-drying stage based on the comparison result and / or the duration of the rinsing stage; After entering the air-drying stage, the heating film and the water pump are turned off, and the fan is controlled to run in a clockwise direction for a predetermined time at different speeds, thereby completing the cleaning work of the range hood.

2. The range hood cleaning method according to claim 1, characterized in that: The steps of entering the hot melt oil stage after the first preset working time, continuously starting the heating film, and the fan jogging in a clockwise direction, while the water pump intermittently pumps water according to the first rule include: After the first preset working time, the hot melt oil stage is entered, and the heating film is continuously activated; The fan rotates in a clockwise direction, and at the same time the water pump is started to pump water, and the water pump is turned off after a first preset water spraying time. After a first preset inching time, the fan is turned off to discharge the sewage in the range hood; After the first preset drainage time, the fan is started again to run in a clockwise direction, and the water pump is started to pump water. This cycle is repeated until the flushing stage is entered after the second preset working time.

3. The range hood cleaning method according to claim 1, characterized in that: The steps of entering the flushing stage after the second preset working time, continuously starting the heating film, and the fan operating alternately in the clockwise and counterclockwise directions, while the water pump intermittently pumps water according to the second rule and obtaining the actual current value of the water pump include: After the second preset working time, the flushing phase is entered, and the heating film is continuously activated; The fan rotates in a clockwise direction, and at the same time the water pump is started to pump water, and the water pump is turned off after the second preset water spraying time. After the second preset inching time, the fan runs in the counterclockwise direction, and the water pump is started again to pump water. After the second preset water spraying time, the water pump is turned off again; After the second preset inching time, the current value of the water pump is detected to obtain the actual current value of the water pump.

4. The range hood cleaning method according to claim 3, characterized in that: The step of comparing the actual current value with the preset current value and determining the timing of entering the air-drying stage according to the comparison result and / or the duration of the flushing stage includes: Determining whether the actual current value is less than the preset current value; If yes, then the air-drying stage is entered; if no, then it is determined whether the continuous working time of the rinsing stage reaches a third preset working time; If yes, the process enters the air-drying stage; if no, the process loops back to the flushing stage to control the operation of the fan and the water pump.

5. The range hood cleaning method according to claim 1, characterized in that: The step of controlling the fan to run in a clockwise direction for a predetermined time at different speed levels to complete the cleaning of the range hood includes: The fan is pre-set with a plurality of different resistance access gears, and each gear is divided into a first gear, a second gear, and a third gear in order from small to large according to the speed of the fan; The fan rotates in a clockwise direction according to the third gear; After the first preset operation time, the fan operates in the clockwise direction according to the second gear; After the second preset operation time, the fan operates in the clockwise direction according to the first gear; After the third preset running time, the fan is turned off.

6. The range hood cleaning method according to claim 5, characterized in that: The first preset operation time is greater than the second preset operation time, and the second preset operation time is less than the first preset operation time.

7. The range hood cleaning method according to claim 7, characterized in that: The first preset operation time length is greater than the first preset operation time length.

8. The range hood cleaning method according to claim 1, characterized in that: The steps after completing the cleaning of the range hood further include: The buzzer sends out an alarm message.

9. The range hood cleaning method according to claim 1, characterized in that: The pumping operation time of the water pump during the flushing stage is longer than the pumping operation time of the water pump during the hot melt oil stage.

10. The range hood cleaning method according to claim 1, characterized in that: The first preset working time is shorter than the second preset working time, and the second preset working time is longer than the third preset working time.

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