CN114263947B - Range hood, control method thereof and computer readable storage medium - Google Patents

Abstract

The invention discloses a range hood, a control method thereof and a computer readable storage medium, wherein the range hood comprises: a tobacco machine main body; the air purifying device is arranged on the cigarette machine main body and is provided with a purifying air duct and an air outlet communicated with the purifying air duct; the direction acquisition device is used for acquiring the air outlet direction of the air outlet; the temperature acquisition device is used for acquiring the environment temperature of the range hood; and the controller is electrically connected with the direction acquisition device and the temperature acquisition device and is used for controlling the air output of the air purification device according to the air output direction and the ambient temperature. The technical scheme of the invention can realize different functions of the air purifying device and meet different requirements of users.

Description

Range hood, control method thereof and computer readable storage medium

Technical Field

The invention relates to the technical field of household appliances, in particular to a range hood, a control method thereof and a computer readable storage medium.

Background

During the cooking process, oil smoke is generated, and the oil smoke not only pollutes the air environment, but also damages the health of human bodies. The traditional range hood can discharge the oil smoke to the outside rapidly, so that the pollution to the air environment in the kitchen and the damage to the health of human bodies are reduced. However, during cooking, there is always oil smoke escaping from the conventional range hood and escaping into the kitchen space. The escaped oil smoke can still cause oil smoke pollution and damage to the health of human bodies.

In order to further reduce the pollution of the oil smoke to the air environment in the kitchen and the damage to the human health, the range hood is additionally provided with an air purifying device on the basis of the main body of the range hood, so that the oil smoke dissipated into the kitchen space is sucked and then purified through the air purifying device. However, the air purifying device has a single function, and is difficult to meet different demands of customers.

Disclosure of Invention

The invention mainly aims to provide a range hood, which aims to realize different functions of an air purifying device and meet different requirements of users.

In order to achieve the above object, the present invention provides a range hood comprising:

a tobacco machine main body;

the air purifying device is arranged on the cigarette machine main body and is provided with a purifying air duct and an air outlet communicated with the purifying air duct;

the direction acquisition device is used for acquiring the air outlet direction of the air outlet;

the temperature acquisition device is used for acquiring the environment temperature of the range hood; and

and the controller is electrically connected with the direction acquisition device and the temperature acquisition device and is used for controlling the air output of the air purification device according to the air output direction and the ambient temperature.

The controller is used for controlling the air output of the air purification device according to the air output direction and the ambient temperature, so that different functions of the air purification device can be realized, and further different requirements of users are met.

Optionally, the air outlet is located at the front of the air purifying device, the air outlet is rotatably provided with a wind guide blade extending along the transverse direction, and the direction acquisition device comprises a position sensor for detecting the rotation position of the wind guide blade;

the controller is electrically connected with the position sensor so as to acquire the air outlet direction through the rotating position.

Therefore, the range hood has the function of acquiring the ambient temperature, and can automatically acquire the air outlet direction, so that the intelligence of the range hood is improved.

Optionally, the direction obtaining device includes a direction input device provided on the range hood, and the direction input device is used for a user to input the air outlet direction.

And protecting another mode for acquiring the air outlet direction.

Optionally, the temperature obtaining device comprises a temperature sensor arranged on the range hood, and the controller obtains the ambient temperature through the temperature sensor.

Thus, the range hood itself has the function of acquiring the ambient temperature.

Optionally, the temperature obtaining device comprises a communication receiver arranged on the range hood, and the controller is in communication connection with an external temperature detection terminal through the communication receiver so as to receive the environmental temperature sent by the external temperature detection terminal.

Therefore, a temperature sensor is not required to be arranged on the range hood, so that the cost of the range hood is reduced.

Optionally, determining that the air outlet direction is forward or inclined downward, and controlling the air outlet quantity of the air purifying device by the controller according to the ambient temperature.

The controller is used for controlling the air outlet quantity of the air purifying device according to the environmental temperature, so that the air outlet quantity can meet the requirements of users under the corresponding environmental temperature, and the body feeling of the users is more comfortable.

Optionally, when the air outlet direction is forward or inclined downward, the ambient temperature is determined to be increased, and the controller controls the air outlet quantity of the air purifying device to be increased.

When the increase of the ambient temperature causes the user to feel untimely due to overheat, the air output of the air purifying device is increased, so that the user feels cooler, and the user obtains more comfortable body feeling.

Optionally, the air purifying device is provided with a purifying fan for driving the air in the purifying air duct to flow to the air outlet;

the controller increases the air output of the air purification device by controlling the rotation speed of the purification fan to increase; or,

The purification fans are arranged in a plurality, and the controller increases the starting quantity of the purification fans by controlling the starting quantity of the purification fans so as to increase the air output of the air purification device.

Two ways of increasing the air output of the air purifying device are protected.

Optionally, when the air outlet direction is forward or obliquely downward, determining a temperature interval in which the ambient temperature is located, and controlling the air purifying device to outlet air with a corresponding air quantity gear by the controller.

Therefore, the number of times of change of the air output of the air purifying device can be reduced, and the control process of the air output of the air purifying device is simpler.

Optionally, the air outlet direction is determined to be upward or inclined upward, and the controller controls the air purifying device to outlet air with the maximum air quantity.

So, air purification device up or slope upwind-force of the air-out is stronger, and the air supply distance is farther to can promote the oil smoke of kitchen space upper half and flow downwards, in order to be incorporated into the air cycle purification, and then can further reduce the oil smoke in the kitchen, be favorable to the improvement of the whole air quality in kitchen space.

The invention also provides a control method of the range hood, which comprises the following steps:

Acquiring the air outlet direction of an air purification device of the range hood and the environment temperature of the range hood;

and controlling the air output of the air purifying device according to the air output direction and the ambient temperature.

Thus, different functions of the air purifying device can be realized, and different requirements of users are further met.

Optionally, the step of controlling the air output of the air purifying device according to the air output direction and the ambient temperature includes:

determining that the air outlet direction is forward or inclined downward;

and controlling the air output of the air purifying device according to the ambient temperature.

Therefore, the air output can meet the requirements of users at corresponding ambient temperatures, and the body feeling of the users is more comfortable.

Optionally, the step of controlling the air output of the air purifying device according to the ambient temperature includes:

determining that the ambient temperature increases;

the air output of the air purifying device is controlled to be increased.

When the increase of the ambient temperature causes the user to feel untimely due to overheat, the air output of the air purifying device is increased, so that the user feels cooler, and the user obtains more comfortable body feeling.

Optionally, the air purifying device is provided with a plurality of air volume gears, and different air volume gears correspond to different temperature intervals;

the step of controlling the air output of the air purification device according to the ambient temperature specifically comprises the following steps:

determining a temperature interval in which the ambient temperature is located;

and controlling the air purifying device to discharge air at the corresponding air quantity gear.

Therefore, the number of times of change of the air output of the air purifying device can be reduced, and the control process of the air output of the air purifying device is simpler.

Optionally, the step of controlling the air output of the air purifying device according to the air output direction and the ambient temperature includes:

determining that the air outlet direction is upward or obliquely upward;

and controlling the air purifying device to perform air outlet at the maximum air quantity.

So, air purification device up or slope upwind-force of the air-out is stronger, and the air supply distance is farther to can promote the oil smoke of kitchen space upper half and flow downwards, in order to be incorporated into the air cycle purification, and then can further reduce the oil smoke in the kitchen, be favorable to the improvement of the whole air quality in kitchen space.

The invention also provides a computer readable storage medium, which is characterized in that the computer readable storage medium is stored with a control program of the range hood, and the control program of the range hood realizes the steps of the control method of the range hood when being executed by a processor.

According to the technical scheme, the air outlet direction of the air outlet can be obtained through the direction obtaining device, the environment temperature of the range hood can be obtained through the temperature obtaining device, meanwhile, the air outlet quantity of the air purifying device is adjustable, and it can be understood that when the air outlet direction of the air outlet is different, the functions generated by the air outlet are different, and meanwhile, a user has different air outlet quantity requirements on the air purifying device under different environment temperatures, so that the air outlet quantity of the air purifying device is controlled through the controller according to the air outlet direction and the environment temperature, different functions of the air purifying device can be realized, and further different requirements of the user are met.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of an embodiment of a range hood according to the present invention;

Fig. 2 is a schematic view of the range hood of fig. 1 after removing the decorative cover and the filter;

fig. 3 is an exploded view of the range hood of fig. 1;

FIG. 4 is an enlarged schematic view of FIG. 3 at A;

FIG. 5 is a schematic view showing the connection of some functional components of the range hood of FIG. 1;

fig. 6 is a schematic view illustrating a structure of the air purifying device of the range hood of fig. 1 in a state in which the air guiding blades are inclined and extended upward toward the front;

FIG. 7 is an enlarged schematic view at B in FIG. 6;

FIG. 8 is a schematic view of the structure between the wind guiding blades and the rotating wheel of the air purifying device in FIG. 6;

FIG. 9 is a schematic view showing a structure of the air purifying device of FIG. 1 in a state that the air guiding blades extend obliquely downward and forward;

fig. 10 is a flowchart illustrating steps of a control method of a range hood according to an embodiment of the present invention.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, if a directional indication (such as up, down, left, right, front, and rear … …) is involved in the embodiment of the present invention, the directional indication is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture, and if the specific posture is changed, the directional indication is correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

The invention provides a range hood.

Referring to fig. 1 to 5, in an embodiment of the present invention, the range hood includes:

a tobacco machine main body 1;

an air purifying device 2 provided in the main body 1 and having a purifying air duct and an air outlet 202 communicating with the purifying air duct;

a direction obtaining device 5, configured to obtain an air outlet direction of the air outlet 202;

the temperature acquisition device 4 is used for acquiring the environment temperature of the range hood; and

and the controller 3 is electrically connected with the direction acquisition device 5 and the temperature acquisition device 4 and is used for controlling the air output of the air purification device 2 according to the air output direction and the ambient temperature.

It can be understood that the smoke exhaust duct is arranged in the smoke exhaust main body 1, and a smoke inlet of the smoke exhaust duct is communicated with the indoor space and is generally suspended above a kitchen range so as to be convenient for sucking the smoke into the smoke exhaust duct; the smoke outlet of the oil smoke suction air duct is communicated with the outside of the room to discharge the oil smoke to the outside of the room; of course, the fume exhaust duct is internally provided with a fume exhaust fan for enabling air flow to flow from the fume inlet to the fume outlet. It will be appreciated that the range hood body 1 has the function of a conventional range hood.

For the air purification device 2, the purification air channel and the oil fume suction air channel are mutually independent, of course, an air inlet 201 communicated with the purification air channel is further arranged, and a filter element 22 is arranged in the purification air channel. The air purifying device 2 further has a purifying fan 21 for driving the air in the purifying duct to flow toward the air outlet 202. The air inlet 201 and the air outlet 202 are both communicated with the indoor space, the air inlet 201 is used for sucking air in the kitchen, the filter 22 is used for filtering and purifying the sucked air, and the air outlet 202 is used for discharging the filtered and purified air back into the kitchen.

When the air purification device 2 and the range hood main body 1 work cooperatively, most of the oil smoke generated in the cooking process is discharged outdoors through the oil smoke suction duct, a small part of the oil smoke can escape to other spaces in a kitchen, and the small part of the oil smoke can be further removed through the purification duct of the air purification device 2, so that the pollution of the oil smoke to the air environment and the damage to the health of a human body are further reduced.

In addition, the technical scheme of the invention can also obtain the air outlet direction of the air outlet 202 through the direction obtaining device 5, and obtain the ambient temperature of the range hood through the temperature obtaining device 4, meanwhile, the air outlet volume of the air purifying device 2 is adjustable, and it can be understood that when the air outlet direction of the air outlet 202 is different, the functions generated by the air outlet are different, and meanwhile, the user has different air outlet volume requirements on the air purifying device 2 under different ambient temperatures, so, the controller 3 controls the air outlet volume of the air purifying device 2 according to the air outlet direction and the ambient temperature, so that different functions of the air purifying device 2 can be realized, and further different requirements of the user are met.

Alternatively, the main body 1 of the cigarette machine and the air purifying device 2 can share one controller 3, and the controller 3 is usually fixed on the main body 1 of the cigarette machine; it will be appreciated that the range body 1 is generally larger in size than the air cleaning device 2, with more and more convenient locations and space for mounting the controller 3. The controller 3 is typically connected in communication with the air cleaning device 2 by wired means; of course, the controller 3 may also be connected in communication with the air cleaning device 2 by wireless means. However, the present design is not limited thereto, and in other embodiments, an independent controller 3 may be provided corresponding to the main body 1 of the smoke machine, and another independent controller 3 may be provided corresponding to the air purifying device 2, so that the controller 3 for controlling the air purifying device 2 is mounted on the air purifying device 2.

Further, in the process that the controller 3 controls the air output of the air purifying device 2 according to the air output direction and the ambient temperature, when the air output direction is upward or obliquely upward, the controller 3 controls the air purifying device 2 to output air with the maximum air output; therefore, the air purification device 2 has stronger upward or upward-inclined air outlet wind force and longer air supply distance, so that the oil smoke at the upper half part of the kitchen space can be pushed to flow downwards to be incorporated into the air circulation purification, the oil smoke in the kitchen can be further reduced, and the improvement of the whole air quality of the kitchen space is facilitated; in particular, the upper half of the kitchen space is often subject to soot accumulation due to the thermal plume effect of soot.

Further, in the process that the controller 3 controls the air output of the air purifying device 2 according to the air output direction and the ambient temperature, when the air output direction is forward or inclined downward, the controller 3 controls the air output of the air purifying device 2 according to the ambient temperature. It can be appreciated that when the air outlet direction is forward or inclined downward, the air outlet of the air purifying device 2 mainly acts on a user, and the user has different air outlet demands on the air purifying device 2 at different environmental temperatures, so that the controller 3 controls the air outlet of the air purifying device 2 according to the environmental temperatures, so that the air outlet can meet the demands of the user at the corresponding environmental temperatures, and the user feel more comfortable.

Further, when the air outlet direction is forward or inclined downward, the controller 3 controls the air outlet amount of the air purifying device 2 to be increased when the ambient temperature is increased in the process that the controller 3 controls the air outlet amount of the air purifying device 2 according to the ambient temperature.

It will be appreciated that during cooking, the ambient temperature to which the range hood is exposed typically increases. In particular, in summer, the increase in the ambient temperature causes discomfort to the user due to overheating, and at this time, the increase in the air output of the air-purifying device 2 causes the user to feel cooler and feel more comfortable.

However, in other embodiments, when the air purifying device 2 is further provided with an electric auxiliary heating device to enable the air to be exhausted, for winter, the ambient temperature will be very small at the beginning of cooking, at this time, the user needs the air purifying device 2 to provide a relatively large amount of warm air, and as the cooking activity proceeds, the ambient temperature will be continuously increased, so that the user's demand for warm air is reduced, at this time, the controller 3 can control the air exhaust of the air purifying device 2 to be reduced, so as to save energy.

Further, the rotation speed of the purge fan 21 is adjustable, and it is understood that the larger the rotation speed of the purge fan 21 is, the larger the air volume it can generate. Therefore, the controller 3 can increase the air output of the air cleaning device 2 by controlling the rotational speed of the cleaning fan 21 to increase. In particular, an increase in the rotational speed of the purge fan 21 can not only increase the air output but also increase the air output speed of the air cleaner 2, thereby enabling the user to experience a cooler feeling.

However, the present design is not limited thereto, and in other embodiments, when the purifying fans 21 are provided in plural, the controller 3 may further increase the air output of the air purifying device 2 by controlling the starting number of the purifying fans 21 to increase; it will be appreciated that, regardless of whether the plurality of purifying fans 21 are arranged side by side or are sequentially arranged in the extending direction of the purifying air duct, the larger the number of the purifying fans 21 is started, the larger the air quantity generated by the purifying fans can be; of course, the way in which the air output is changed by adjusting the rotation speed of the purifying fan 21 can enable the change of the air output to be relatively continuously adjustable.

In addition, in other embodiments, a plurality of purifying fans 21 with adjustable rotation speed may be disposed in the purifying air duct, and the controller 3 changes the air output of the air purifying device 2 by changing the number of the activated purifying fans 21 and the rotation speed of the purifying fans 21 at the same time.

Further, the air purification device 2 has a plurality of air volume steps (it is understood that the air volume corresponding to different air volume steps is different), and different air volume steps correspond to different temperature ranges. When the air outlet direction is forward or obliquely downward, in the process that the controller 3 controls the air outlet quantity of the air purifying device 2 according to the ambient temperature, the controller 3 firstly determines a temperature interval in which the ambient temperature is located, and then controls the air purifying device 2 to outlet air in a corresponding air quantity gear; thus, the number of times of change of the air output of the air purifying device 2 can be reduced, and the control process of the air output of the air purifying device 2 is simpler. Optionally, different air volume gears correspond to different rotation speeds of the purifying fan 21; or, different air quantity gears correspond to different starting numbers of the purifying fans 21. Of course, the air volume gear corresponding to the higher temperature interval corresponds to a larger rotational speed of the purge fan 21, or a larger number of purge fans 21 are started.

In one embodiment, when the ambient temperature is within a temperature range of [24 ℃,28 ℃), the corresponding air volume gear is a first gear, and the first gear air volume is 0.5 times of the maximum air volume; when the ambient temperature is within a temperature range of [28 ℃ and 30 ℃), the corresponding air quantity gear is the second gear, and the second gear air quantity is 0.8 times of the maximum air quantity; when the ambient temperature is within the temperature range [30 ℃ and + ] infinity, the corresponding air volume gear is the third gear, and the third gear air volume is the maximum air volume.

Further, the temperature acquiring device 4 comprises a temperature sensor 41 arranged on the range hood and electrically connected with the controller 3, and the controller 3 acquires the ambient temperature through the temperature sensor 41; that is, the range hood itself has a function of acquiring the ambient temperature, and thus, even when a network signal is absent, the controller 3 can immediately acquire the ambient temperature, thereby controlling the air outlet amount of the air cleaning device 2 according to the ambient temperature. Optionally, the temperature sensor 41 is disposed on the main body of the cigarette machine, and the main body 1 of the cigarette machine is generally larger than the air purifying device 2, so as to have more and more convenient positions and spaces for installing the temperature sensor 41; of course, in other embodiments, the temperature sensor 41 may also be provided in the air purifying device 2.

However, the present design is not limited thereto, and in other embodiments, the temperature obtaining device 4 may further include a communication receiver disposed on the range hood, through which the controller 3 is in communication connection with the external temperature detecting terminal to receive the environmental temperature sent by the external temperature detecting terminal, so that the controller 3 can also obtain the environmental temperature. In this embodiment, the external temperature detection terminal may be an intelligent thermometer with a communication function, a mobile terminal (such as, but not limited to, a mobile phone, a tablet computer, etc.) integrated with a temperature sensor, or other household appliances (such as, but not limited to, a disinfection cabinet, a refrigerator, etc.) with a communication function and integrated with an external temperature sensor. Optionally, the communication receiver is a wireless communication receiver, which may be, but not limited to, in communication connection with an external temperature detection terminal by WIFI, bluetooth, or the like.

Further, the air outlet 202 is located on the front surface of the air purifying device 2. It will be appreciated that the user typically stands in front of the kitchen range, i.e. in front of the range hood for cooking, and the air outlet 202 is provided on the front of the air cleaning device 2, so that the air outlet energy of the air cleaning device 2 can be directly applied to the user when the air outlet 202 is inclined forward or downward for air outlet. Of course, in other embodiments, the air outlet 202 may be located at other positions of the air purifying device 2, such as the top surface or the side surface, and it is understood that in this case, the air outlet of the air purifying device 2 is difficult to directly act on the user, but can also act on the user to some extent in consideration of the diffusivity of the air outlet.

For the solution that the air outlet 202 is located on the front side of the air purifying device 2, optionally, an air guiding blade 23 extending in a transverse direction may be rotatably provided on the air outlet 202, so that the air outlet direction of the air outlet 202 may be adjusted, and when the air outlet is required to directly act on a user, the air outlet is rotated to a position where the air outlet extends obliquely downward forward or horizontally forward (see fig. 9); when the circulation purification of the air in the kitchen is to be realized, the air guide blades 23 are rotated to a position (see fig. 6) extending obliquely forwards and upwards, so that the air outlet 202 is inclined forwards and upwards to discharge air, and the oil smoke in the upper half part of the kitchen space can be pushed to flow downwards so as to be contained in the air circulation purification, and the oil smoke in the kitchen can be further reduced, thereby being beneficial to the improvement of the whole air quality of the kitchen space; in particular, the upper half of the kitchen space is often subject to soot accumulation due to the thermal plume effect of soot.

Further, the direction acquisition device 5 includes a position sensor to detect a rotational position of the wind guide blade 23; the controller 3 is electrically connected with the position sensor, so that the air outlet direction is obtained through the rotating position, the range hood has the function of obtaining the ambient temperature, the air outlet direction can be automatically obtained, and the intelligence of the range hood is improved. It will be appreciated that the air outlet 202 can have different air outlet directions when the air guiding blades 23 are at different rotational positions. Specifically, when the air guide vane 23 extends obliquely upward and forward, the air outlet 202 extends obliquely upward and forward; when the air guide vane 23 extends obliquely downward or horizontally forward, the air outlet 202 extends obliquely downward or horizontally forward. Optionally, the position sensor is a hall sensor, and the hall sensor can acquire any rotation position of the wind guide blade 23; however, the present design is not limited thereto, and in other embodiments, the position sensor may be a tact switch or a laser position sensor.

However, the present design is not limited thereto, and in other embodiments, the direction obtaining device 5 further includes a direction input device provided on the range hood, and the direction input device is used for a user to input the air outlet direction; thus, the air outlet direction can also be obtained; it can be understood that in this case, the user needs to determine the air outlet direction, and input the determined air outlet direction through the direction input device, where the input mode may be selected, that is, the direction input device provides a specific possible input direction for the user to select, and of course, the input mode may also be a direct writing mode. Optionally, the direction input device is configured as an input key or a touch screen or a voice input device, etc.

Optionally, referring to fig. 7, the air outlet 202 is provided with an upper limiter 235 located on the upper side of the air guiding blade 23, and the air guiding blade 23 rotates upwards to abut against the upper limiter 235. It will be appreciated that the upper limiter 235 may limit the upward infinite rotation of the wind guiding blade 23, for example, when the upper limiter 235 is located obliquely above the inner side of the rotation axis of the wind guiding blade 23, it may limit the maximum inclination angle of the wind guiding blade 23 extending obliquely forward and downward, and when the upper limiter is located obliquely above the outer side of the rotation axis of the wind guiding blade 23, it may limit the maximum inclination angle of the wind guiding blade 23 extending obliquely forward and upward. In this embodiment, the upper limiting member 235 may be configured as a limiting post; in other embodiments, the upper limiting member 235 may be configured as a limiting bump or other shapes, so long as it can interfere with the rotation path of the wind guiding blade 23 to limit the rotation of the wind guiding blade 23. Similarly, the air outlet 202202 is further provided with a lower limiting member 236 disposed below the air guiding blade 23, and the air guiding blade 23 rotates downward to abut against the lower limiting member 236. It will be appreciated that the lower limiting member 236 is configured to limit downward infinite rotation of the wind guiding blade 23, for example, when the lower limiting member 236 is located obliquely below the inner side of the rotation axis of the wind guiding blade 23, it can limit the maximum inclination angle of the wind guiding blade 23 extending obliquely forward and upward, and when the lower limiting member is located obliquely below the outer side of the rotation axis of the wind guiding blade 23, it can limit the maximum inclination angle of the wind guiding blade 23 extending obliquely forward and downward. Of course, in some other embodiments, the air outlet 202 may be provided with only one of the upper limiter 235 and the lower limiter 236. According to the technical scheme, the upper limiting piece 235 and/or the lower limiting piece 236 are/is arranged, so that the wind guide blade 23 can be prevented from rotating upwards or downwards to close the air outlet 202 due to false touch in the wind guide process, and the air outlet is prevented from being influenced.

Optionally, a plurality of air guiding blades 23 are disposed at intervals along the up-down direction, and the plurality of air guiding blades 23 include a driving blade 231 and at least one driven blade 232, and the driven blades 232 are connected with the driving blade 231 through a same connecting rod 233, so that when the driving blade 231 is driven to rotate, all the driven blades 232 can be driven to rotate through the connecting rod 233, so that on one hand, each air guiding blade 23 is not required to be driven, and on the other hand, all the air guiding blades 23 can be synchronously rotated, and the air outlet direction of each position of the air outlet 202 is consistent. Typically, the same side of the driving blade 231 and the driven blade 232 is pivotally connected to the air outlet 202, and the opposite side is pivotally connected to the connecting rod 233. For the solution provided with the connecting rod 233, the upper limiting member 235 and the lower limiting member 236 may be disposed on the upper and lower sides of one wind guiding blade 23, for example, on the upper and lower sides of the driving blade 231, so that the product structure is simpler.

Alternatively, referring to fig. 7 and 8, the driving blade 231 is provided with a rotation shaft rotatably passing through the air outlet 202, and a rotation wheel 234 is fixedly provided on the rotation shaft, so that the driving blade 231 can be driven to rotate by manually rotating the rotation wheel 234. It will be appreciated that no relative rotation occurs between the rotating wheel 234 and the rotating shaft, which may be, but is not limited to, a splined connection, or a section of the rotating shaft that mates with the rotating wheel 234 may be provided as a flat shaft or the like. However, the present design is not limited thereto, and in other embodiments, a driving motor may be further provided to actively drive the driving blade 231 to rotate, in particular, a stepping motor may be provided to drive the driving blade 231 to rotate, and the rotation angle of the driving blade 231 may be precisely controlled by the stepping motor, so as to precisely control the rotation position of the driving blade 231.

For the solution of providing the rotating wheel 234 to manually drive the driving blade 231, in order to facilitate manual rotation of the rotating wheel 234, optionally, an anti-slip structure is provided on the outer circumference of the rotating wheel 234, and the anti-slip structure may include, but is not limited to, a plurality of anti-slip ribs provided on the outer circumference of the rotating wheel 234 at intervals along the circumferential direction thereof, or anti-slip stripes provided on the rotating outer circumference, or the like. Optionally, the position sensor is provided on the rotating wheel 234; it will be appreciated that the rotating wheel 234 is generally thicker than the mouth wall of the outlet 202, thereby providing a more stable mounting attachment for the position sensor.

In the present embodiment, referring to fig. 1 to 4, the range hood body 1 includes a decorative cover 11 and a fume collecting hood 12 provided below the decorative cover 11, and the fume suction duct is provided in the decorative cover 11. Further, the air purifying device 2 is arranged in the decorative cover 11, so that the air purifying device 2 is hidden in the decorative cover 11, and the appearance of the range hood can be more concise. Without loss of generality, the air outlet 202 is exposed on the front surface of the decorative cover 11, so that the clean air purified by the air purifying device 2 can be sent out into the kitchen space. However, the present design is not limited thereto, and in other embodiments, the air purifying device 2 may be disposed outside the decorative cover 11, for example, it may be disposed on the front side of the decorative cover 11 and above the fume collecting hood 12; the air purifying device 2 is arranged outside the decorative cover 11, so that the internal components (such as the filter 22, the purifying fan 21 and the like) can be conveniently maintained and disassembled; it will be appreciated that the air cleaning device 2 provided outside the decorative cover 11 does not require the decorative cover 11 to be removed during the process of removing the internal components thereof.

Optionally, the temperature sensor 41 is disposed on a side of the fume collecting hood 12 to obtain an ambient temperature of the range hood.

For the solution in which the air purification device 2 is disposed in the decorative cover 11, optionally, the air outlet 202 is disposed at the lower portion of the decorative cover 11; it will be appreciated that the lower portion of the trim cover 11 is closer to the cookers, which is more advantageous for delivering cleaned air to the cookers.

Optionally, the air inlet 201 communicating with the purifying air duct is exposed at the side surface of the decorative cover 11, so that the fume escaping to the side of the fume extractor is easily sucked into the purifying air duct, so as to reduce the fume on the side of the fume extractor; in particular, when a range with a double burner is used below the range hood, the cooking fumes generated during cooking are easy to escape from the side direction of the range hood, and the air inlet 201 exposed at the side of the decorative cover 11 is more beneficial to sucking the cooking fumes.

Optionally, the two opposite sides of the decorative cover 11 are respectively provided with the air inlet 201 to reduce the oil smoke on two sides of the range hood. Of course, the air inlet 201 may be provided only on one of the two side surfaces of the decorative cover 11. Optionally, an air inlet grille is disposed on the air inlet 201 to prevent hands and other foreign objects from extending into the decorative cover 11.

It can be appreciated that in this embodiment, the decorative cover 11 is provided with an air return opening 111 corresponding to the air inlet 201, and an air supply opening 112 corresponding to the air outlet 202.

Optionally, two filter elements 22 are provided, and each filter element 22 is disposed near one air inlet 201; thus, as soon as the air with the oil smoke enters the purifying air duct, the filtering piece 22 can be used for filtering, and the probability of polluting other devices in the purifying air duct with the oil smoke is reduced. However, the present design is not limited thereto, and in other embodiments, only one filter 22 may be disposed near the air outlet 202, so that the fume in the air can be purified and then discharged.

Optionally, the decorative cover 11 is provided with a filter mounting opening 113, and the filter 22 is detachably arranged in the purifying air duct through the filter mounting opening 113; in this manner, removal, cleaning, or replacement of the filter element 22 may be facilitated. It will be appreciated that the filter element 22 will typically have a life which must be replaced after its lifetime has been reached to ensure good cleaning of the air cleaning device 2, and in addition, be removed periodically or aperiodically for cleaning or cleaning, which is beneficial for extending its lifetime.

Optionally, the filter cover 25 is disposed on the filter mounting port 113; thus, after the filter 22 is installed into the purification air duct from the filter installation opening 113, the filter cover 25 is covered on the filter installation opening 113, so that the filter 22 can be prevented from shaking out, the structural stability of the product is improved, and foreign matters and the like can be prevented from entering the purification air duct from the filter installation opening 113.

Optionally, the air purifying device 2 further includes a purifying housing 24 disposed in the decorative cover 11, the purifying air duct is at least partially defined by the purifying housing 24, and the air inlet 201 is formed with the purifying housing 24. It will be appreciated that the provision of the separate purge housing 24 more accurately restricts the purge air path, thereby accurately guiding the purge air flow to improve the purge efficiency, and that the purge housing 24 can more conveniently attach the filter element 22 and the purge fan 21 for installation; however, the present design is not limited thereto, and in other embodiments, a partition member may be simply provided in the decorative cover 11 to isolate the purge air duct. Without loss of generality, the purge housing 24 is provided with a mounting port 203 corresponding to the filter mounting port 113, and the filter 22 is detachably connected to the purge housing 24 through the filter mounting port 113 and the mounting port 203.

In the present embodiment, the filter cover 25 provided at the filter mounting port 113 is connected to the purge housing 24. However, the present design is not limited thereto, and in other embodiments, the filter cover 25 may be connected to the decorative cover 11. In addition, in the present embodiment, alternatively, one side of the filter cover 25 is rotatably connected to the purge housing 24, and the other side is detachably connected to the purge housing 24; in this way, after opening the filter cover 25, the filter cover 25 remains attached to the purge housing 24, preventing loss of the filter cover 25. Further alternatively, the other side of the filter cover 25 may be connected to the purification housing 24 by, but not limited to, a push-button switch assembly, so that the filter cover 25 may be conveniently opened and closed by being pushed, and the operation is convenient.

Optionally, the filter element 22 is retractably provided to the purge housing 24; it will be appreciated that removal, cleaning or replacement of the filter element 22 can be more conveniently performed by pulling.

Optionally, the purifying fan 21 is a centrifugal fan, on one hand, the air volume of the centrifugal fan is larger, and the noise is smaller, so that the far-distance air supply can be realized under the low noise; on the other hand, the centrifugal fan has the function of changing the wind direction (axial air inlet and radial air outlet), and is beneficial to realizing the air inlet at two sides and the air outlet at the front.

Further, a centrifugal volute 26 for installing a centrifugal fan is arranged in the purifying housing 24, an air outlet side of the centrifugal volute 26 is downward and is bent forward to extend to form an air guide section 27, and the air outlet 202 is formed at a free end of the air guide section 27. In this embodiment, by the arrangement of the air guiding section 27 that is bent and extended, the forward air supply can be realized under the condition that the axial direction of the centrifugal fan is vertical or nearly vertical to the fan cover, and at this time, the installation space of the centrifugal fan in the front-rear direction is smaller. It will be appreciated that if the radial direction of the centrifugal fan is perpendicular or nearly perpendicular to the fan shroud, the installation space required for the centrifugal fan in the fore-and-aft direction is large because, in general, the diameter of the centrifugal fan is larger than the axial thickness of the centrifugal fan. Optionally, the centrifugal volute 26 includes a volute body and a volute cover that are spliced together to facilitate loading of the centrifugal fan into the centrifugal volute 26.

The invention also provides a control method of the range hood. The range hood comprises a hood main body and an air purifying device; when the air purification device and the range hood main body work cooperatively, most of the oil smoke generated in the cooking process is discharged outdoors through the oil smoke suction duct in the range hood main body, and a small part of the oil smoke can escape to other spaces in a kitchen, so that the small part of the oil smoke can be further removed through the purification duct in each purification module, and the pollution of the oil smoke to the air environment and the damage to the health of a human body are further reduced.

Referring to fig. 10, in an embodiment, the control method of the range hood includes the following steps:

s1, acquiring the air outlet direction of an air purification device of a range hood and the environment temperature of the range hood;

and S2, controlling the air output of the air purifying device according to the air output direction and the ambient temperature.

According to the technical scheme, the air outlet direction of the air outlet and the environment temperature of the range hood are obtained, meanwhile, the air outlet quantity of the air purifying device is adjustable, and it can be understood that when the air outlet direction of the air outlet is different, the functions generated by the air outlet are different, and meanwhile, a user has different air outlet quantity requirements on the air purifying device under different environment temperatures, so that the air outlet quantity of the air purifying device is controlled according to the air outlet direction and the environment temperature, different functions of the air purifying device can be realized, and further different requirements of the user are met.

Further, the step S2 includes:

step S21, determining that the air outlet direction is upward or obliquely upward;

and S22, controlling the air purifying device to perform air outlet at the maximum air quantity.

Therefore, the upward or upward-inclined air outlet wind force of the air purifying device is strong, and the air supply distance is long, so that the oil smoke at the upper half part of the kitchen space can be pushed to flow downwards to be contained in the air circulation purification, the oil smoke in the kitchen can be further reduced, and the improvement of the whole air quality of the kitchen space is facilitated; in particular, the upper half of the kitchen space is often subject to soot accumulation due to the thermal plume effect of soot.

Further, the step S2 further includes:

step S23, determining that the air outlet direction is forward or inclined downward;

and step S24, controlling the air output of the air purifying device according to the ambient temperature.

It can be understood that when the air outlet direction is forward or inclined downward, the air outlet of the air purifying device mainly acts on a user, and the user has different air outlet demands on the air purifying device at different environmental temperatures, so that the air outlet of the air purifying device is controlled according to the environmental temperatures, and the air outlet can meet the demands of the user at the corresponding environmental temperatures, so that the body feeling of the user is more comfortable.

It should be noted that, no precedence relationship exists between the step S21 and the step S23, which is a result of determining according to the obtained air outlet direction.

Further, the step S24 includes:

step S241, determining that the ambient temperature increases;

step S242 controls the air output of the air cleaning device to increase.

It will be appreciated that during cooking, the ambient temperature to which the range hood is exposed typically increases. In particular, in summer, the increase in the ambient temperature may cause discomfort to the user due to overheating, and at this time, the increase in the air output of the air cleaning device may cause the user to feel cooler and feel more comfortable.

However, in other embodiments, when the air purifying device is further provided with the electric auxiliary heating device to enable the air to be exhausted, for winter, the ambient temperature is very small at the beginning of cooking, at this time, the user needs the air purifying device to provide a relatively large amount of warm air, and along with the cooking activity, the ambient temperature is continuously increased, so that the user's demand for the amount of warm air is reduced, and at this time, the controller can control the air exhausting amount of the air purifying device to be reduced, so as to save energy.

In one embodiment, the air purifying device is provided with a plurality of air volume gears, and different air volume gears correspond to different temperature intervals;

the step S24 specifically includes:

step S2401, determining a temperature interval in which the ambient temperature is located;

step S2402, controlling the air purifying device to output air at a corresponding air volume gear.

Therefore, the number of times of change of the air output of the air purifying device can be reduced, and the control process of the air output of the air purifying device is simpler. Optionally, different air volume gears correspond to different rotational speeds of the purifying fan; or, different air quantity gears correspond to different starting numbers of the purifying fans. Of course, the air quantity gear corresponding to the higher temperature interval has larger corresponding rotating speed of the purifying fans or more starting quantity of the purifying fans.

For example, when the ambient temperature is within a temperature range of [24 ℃,28 ℃), the corresponding air volume gear is a first gear, and the first gear air volume is 0.5 times of the maximum air volume; when the ambient temperature is within a temperature range of [28 ℃ and 30 ℃), the corresponding air quantity gear is the second gear, and the second gear air quantity is 0.8 times of the maximum air quantity; when the ambient temperature is within the temperature range [30 ℃ and + ] infinity, the corresponding air volume gear is the third gear, and the third gear air volume is the maximum air volume.

The invention also provides a computer readable storage medium, wherein the computer readable storage medium is stored with a control program of the range hood, and the control program of the range hood realizes the steps of the control method of the range hood when being executed by a processor. Since the computer readable storage medium adopts all the technical solutions of all the embodiments, at least the beneficial effects brought by the technical solutions of the embodiments are provided, and will not be described in detail herein.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims (11)

1. A range hood, comprising:

a tobacco machine main body;

the air purifying device is arranged on the cigarette machine main body and is provided with a purifying air duct and an air outlet communicated with the purifying air duct;

the direction acquisition device is used for acquiring the air outlet direction of the air outlet;

the temperature acquisition device is used for acquiring the environment temperature of the range hood; and

the controller is electrically connected with the direction acquisition device and the temperature acquisition device and is used for controlling the air output of the air purification device according to the air output direction and the ambient temperature;

determining that the air outlet direction is forward or inclined downwards, and controlling the air outlet quantity of the air purifying device by the controller according to the ambient temperature so as to enable the air outlet quantity to meet the body feeling requirement of a user at the corresponding ambient temperature;

and determining that the air outlet direction is upward or obliquely upward, and controlling the air purifying device to outlet air at the maximum air quantity by the controller, so that the oil smoke in the upper half part of the kitchen space is pushed to flow downwards to be contained in the air circulation purification.

2. The range hood according to claim 1, wherein the air outlet is located on the front surface of the air purifying device, the air outlet is rotatably provided with a wind guiding blade extending in a transverse direction, and the direction acquisition device comprises a position sensor for detecting the rotation position of the wind guiding blade;

The controller is electrically connected with the position sensor so as to acquire the air outlet direction through the rotating position.

3. The range hood of claim 1, wherein the direction acquisition means comprises a direction input means provided to the range hood, the direction input means being configured to allow a user to input the direction of the outlet air.

4. The range hood of claim 1 wherein said temperature acquisition means comprises a temperature sensor provided on said range hood, said controller acquiring said ambient temperature through said temperature sensor; or,

the temperature acquisition device comprises a communication receiver arranged on the range hood, and the controller is in communication connection with an external temperature detection terminal through the communication receiver so as to receive the environment temperature sent by the external temperature detection terminal.

5. The range hood of claim 1, wherein the ambient temperature is determined to increase when the air outlet direction is directed forward or inclined downward, and the controller controls the air outlet amount of the air cleaning device to increase.

6. The range hood of claim 5, wherein the air cleaning device has a cleaning fan for driving air in the cleaning duct to flow to the air outlet;

The controller increases the air output of the air purification device by controlling the rotation speed of the purification fan to increase; or,

the purification fans are arranged in a plurality, and the controller increases the starting quantity of the purification fans by controlling the starting quantity of the purification fans so as to increase the air output of the air purification device.

7. The range hood of claim 5, wherein the controller determines a temperature range in which the ambient temperature is located when the air outlet direction is forward or inclined downward, and the controller controls the air purification device to outlet air at a corresponding air volume gear.

8. The control method of the range hood is characterized by comprising the following steps:

acquiring the air outlet direction of an air purification device of the range hood and the environment temperature of the range hood;

controlling the air output of the air purifying device according to the air output direction and the ambient temperature;

the step of controlling the air output of the air purifying device according to the air output direction and the ambient temperature comprises the following steps:

determining that the air outlet direction is forward or inclined downwards, and controlling the air outlet quantity of the air purifying device according to the ambient temperature so as to enable the air outlet quantity to meet the somatosensory requirement of a user at the corresponding ambient temperature;

And determining that the air outlet direction is upward or obliquely upward, and controlling the air purification device to outlet air with the maximum air quantity, so that the oil smoke in the upper half part of the kitchen space is pushed to flow downwards to be contained in the air circulation purification.

9. The method of controlling a range hood according to claim 8, wherein the step of controlling the air outlet amount of the air cleaning device according to the ambient temperature comprises:

determining that the ambient temperature increases;

the air output of the air purifying device is controlled to be increased.

10. The control method of a range hood according to claim 9, wherein the air cleaning device has a plurality of air volume steps, and different air volume steps correspond to different temperature ranges;

the step of controlling the air output of the air purification device according to the ambient temperature specifically comprises the following steps:

determining a temperature interval in which the ambient temperature is located;

and controlling the air purifying device to discharge air at the corresponding air quantity gear.

11. A computer-readable storage medium, wherein a control program of a range hood is stored on the computer-readable storage medium, which when executed by a processor, implements the steps of the control method of a range hood according to any one of claims 8 to 10.