CN114484528A - Smoke exhaust ventilator - Google Patents

Abstract

The invention discloses a range hood, comprising: a cigarette machine main body; the air purification device is arranged on the cigarette machine main body and is provided with a purification air channel and an air outlet communicated with the purification air channel, and the air purification device comprises an air guide blade and a purification fan, wherein the air guide blade is rotatably arranged at the air outlet, and the purification fan is used for driving the air in the purification air channel to flow; the speed regulator comprises an adjustable electrical parameter part and a rotating part which is rotatably connected with the adjustable electrical parameter part, the adjustable electrical parameter part is electrically connected with the purification fan, and the rotating part is linked with the air guide blade; the wind guide blades are rotated to drive the rotating portion to rotate in a linkage mode, the rotating portion rotates to adjust the electric parameter of the adjustable electric parameter portion to be the electric parameter output by the purifying fan, and therefore the running rotating speed of the purifying fan is adjusted. The technical scheme of the invention can realize different functions of the air purification device and meet different requirements of users.

Description

Smoke exhaust ventilator

Technical Field

The invention relates to the technical field of household appliances, in particular to a range hood.

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 rapidly discharge oil smoke to the outside, and reduces the pollution to the air environment in a kitchen and the damage to the health of human bodies. However, during cooking, there is always oil smoke escaping from the conventional range hood and dissipating into the kitchen space. The escaping oil smoke can still cause oil smoke pollution and harm 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 health of the human body, the range hood is additionally provided with an air purification device on the basis of the main body of the range hood, so that the oil smoke dissipated into the space of the kitchen is sucked and purified through the air purification device. However, the air purification device has a single function, and is difficult to meet different requirements of customers.

Disclosure of Invention

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

In order to achieve the above object, the range hood provided by the present invention comprises:

a cigarette machine main body;

the air purification device is arranged on the cigarette machine main body and is provided with a purification air channel and an air outlet communicated with the purification air channel, and the air purification device comprises an air guide blade and a purification fan, wherein the air guide blade is rotatably arranged at the air outlet, and the purification fan is used for driving the air in the purification air channel to flow; and

the speed regulator comprises an adjustable electrical parameter part and a rotating part which is rotatably connected with the adjustable electrical parameter part, the adjustable electrical parameter part is electrically connected with the purification fan, and the rotating part is linked with the air guide blade;

the wind guide blades are rotated to drive the rotating portion to rotate in a linkage mode, the rotating portion rotates to adjust the electric parameter of the adjustable electric parameter portion to be the electric parameter output by the purifying fan, and therefore the running rotating speed of the purifying fan is adjusted.

Rotate wind-guiding blade, enable the air outlet has different air-out directions, and the rotational speed of purifying the fan is different, enables the air output of air outlet is different, and makes the air supply distance and the power of supplying air of air outlet are different, so, through the setting of speed regulator, can realize the basis the different air-out directions of air outlet regulate and control the air supply distance and the power of supplying air of air outlet to realize the different functions of air purification device, and then satisfy user's different demands.

Optionally, the adjustable electrical parameter portion includes a circuit board, a wiring terminal disposed on the circuit board, and a rotary base disposed on the circuit board, the rotary portion is rotatably disposed on the rotary base, and the wiring terminal is electrically connected to the purifying fan.

The arrangement of the rotating base is beneficial to the stability and smoothness of the rotation of the rotating part; the arrangement of the wiring terminal can improve the convenience of realizing the electric connection between the purification fan and the adjustable electric parameter part.

Optionally, the rotating portion is rotated to adjust the voltage or current output by the purifying fan. That is, the operation speed of the purification fan may be adjusted by outputting different voltages or currents.

Optionally, the speed regulator is a potentiometer; the potentiometer is easy to obtain, low in price and beneficial to low-cost realization of products.

Optionally, the air guide blade is provided with a blade rotating shaft, and the rotating portion is connected with the blade rotating shaft through a linkage mechanism so as to ensure that the rotating portion can be driven in a linkage manner when the air guide blade is rotated.

Optionally, the linkage mechanism includes a flat insertion portion disposed at one end of the rotation portion and the blade rotation shaft, and a slot disposed at the other end of the rotation portion and the blade rotation shaft, and the flat insertion portion is inserted into the slot.

The flat plug-in part and the slot are simple in matching structure and easy to assemble, product production efficiency is improved, other accessories are not needed, materials can be reduced, and product cost is reduced.

Optionally, an installation part is arranged beside the air outlet, and the speed regulator is installed on the installation part.

The installation department can do speed regulator provides the installation and depends on, so that speed regulator's installation on the product, and be favorable to speed regulator's job stabilization nature.

Optionally, the mounting portion is provided with a first support rib and a second support rib which intersect, and the speed regulator is supported on the first support rib and the second support rib.

The first supporting rib and the second supporting rib which are intersected are higher in structural strength and can provide a more stable supporting effect for the speed regulator.

Optionally, a first connection position is arranged at an intersection of the first support rib and the second support rib, and the speed regulator is connected with the first connection position.

The intersection of the first supporting rib and the second supporting rib has higher strength and is more suitable for setting a connecting position; in addition, the position of the intersection of the first supporting rib and the second supporting rib is obvious, and an assembling person can easily find the position, so that the product is convenient to assemble.

Optionally, the range hood further includes an adjusting member disposed on the air guide blade, and the adjusting member is used to adjust a rotation position of the air guide blade. The adjusting piece can realize the rotation drive of the air guide blade.

Optionally, the air guide blade is provided with a blade rotating shaft, and the adjusting member is an adjusting wheel arranged on the blade rotating shaft; therefore, the air guide blade can be driven to rotate by manually rotating the adjusting wheel.

Optionally, at least a part of the adjusting wheel is exposed outside, and at least the exposed part of the adjusting wheel is provided with an anti-slip structure, so that the adjusting wheel can be manually rotated, and the operation convenience for driving the wind guide blade to rotate is improved.

Optionally, the speed regulator and the regulating wheel are respectively arranged on two opposite sides of the air outlet; therefore, the space on two sides of the air outlet can be more reasonably utilized, and the structure of the product is more compact.

Optionally, the air outlet is located on the front surface of the air purification device, and the air guide blade extends in the transverse direction; so, the accessible makes to wind guide blade's drive the air outlet air-out direction forward, wherein, when the air outlet inclined upward forward, can promote the downward flow with the oil smoke of the first half in kitchen space to come in air cycle purification, and when the air outlet inclined downward forward or horizontal air-out in the place ahead, can blow the clean air after purifying to the culinary art person, provide clean air for the culinary art person, promote user experience.

Optionally, when the air guide blade is rotated to incline forwards and upwards, the rotating part is driven to rotate in a linkage manner to enable the adjustable electrical parameter part to output a first electrical parameter for the purifying fan;

when the wind guide blades are rotated to incline towards the front or towards the front lower part, the wind guide blades are linked to drive the rotating part to rotate to enable the adjustable electrical parameter part to output a second electrical parameter for the purifying fan;

operating the purification fan at a first rotational speed under the first electrical parameter; under the second electrical parameter, the purification fan operates at a second rotating speed; the first rotational speed is greater than the second rotational speed.

Therefore, when the air guide blades are rotated to incline forwards and upwards, the purifying fan runs at a larger first rotating speed, so that the air outlet obliquely blows air forwards and upwards at a larger air outlet amount, the wind power is stronger, the air supply distance is longer, and the air in a kitchen can be better circularly purified; when the air guide blades are rotated to incline towards the front or towards the front lower part, the purification fan operates at a lower second rotating speed, so that the air outlet can obliquely discharge air towards the front lower part or horizontally discharge air towards the front with a lower air discharge amount, the discharged air is softer, clean air can be provided for a cooker in a soft and comfortable air supply mode, and user experience is improved.

In the technical scheme of the invention, the rotating part of the speed regulator is linked with the air guide blade, and the rotation of the rotating part can adjust the electrical parameter output by the purification fan from the adjustable electrical parameter part, so as to adjust the running rotating speed of the purification fan, namely, the running rotating speed of the purification fan can be adjusted through the rotation of the air guide blade; it can be understood that, rotate wind-guiding blade, enable the air outlet has different air-out directions, and the rotational speed of purifying the fan is different, enables the air output of air outlet is different, and makes the air supply distance and the power of supplying air of air outlet are different, so, through speed regulator's setting, can realize according to the different air-out directions of air outlet, regulation and control the air supply distance and the power of supplying air of air outlet to realize the different functions of air purification device, and then satisfy user's different demands. .

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

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

FIG. 2 is a schematic structural view of the range hood of FIG. 1 with the decorative cover and the filter member removed;

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

FIG. 4 is a schematic structural diagram of the speed regulator, the air guide vane and the regulating wheel;

FIG. 5 is an enlarged schematic view at A in FIG. 4;

FIG. 6 is a front view of the structure of FIG. 4;

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

FIG. 8 is a side view of the structure of FIG. 4;

FIG. 9 is an enlarged schematic view at C of FIG. 8;

fig. 10 is a schematic structural view between the wind guide blade and the rotary wheel in fig. 4;

fig. 11 is a schematic structural view of the air purifying device of the range hood in fig. 1 when the air guide blade is in a forward and upward inclined extended state;

fig. 12 is a schematic structural view of the air purifying device in fig. 11, wherein the air guiding blades are in a forward and downward inclined extending state.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Cigarette machine main body	11	Decorative cover
12	Exhaust fume collecting hood	111	Return air inlet
				112	Air supply outlet	113	Filter element mounting port
2	Air purifying device	21	Purifying fan
				22	Filter element	23	Wind-guiding blade
231	Flat plug-in part	211	Mounting part
				212	The first supporting rib	213	Second support rib
24	Purifying shell	25	Filter cover
				201	Air inlet	202	Air outlet
203	Mounting through opening	26	Centrifugal volute
				27	Wind guide section	3	Speed regulator
31	Adjustable electrical parameter part	32	Rotating part
				311	Circuit board	312	Connecting terminal
313	Rotary base	321	Inserting groove
				4	Regulating wheel	41	Anti-skid structure

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "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 relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" and/or "appears throughout, the meaning includes three parallel schemes, for example," A and/or B "includes scheme A, or scheme B, or a scheme satisfying both schemes A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a range hood.

Referring to fig. 1 to 4, in an embodiment of the present invention, the range hood includes:

a cigarette machine main body 1;

the air purification device 2 is arranged on the cigarette machine main body 1 and is provided with a purification air channel and an air outlet 202 communicated with the purification air channel, and the air purification device 2 comprises an air guide blade 23 which is rotatably arranged at the air outlet 202 and a purification fan 21 which is used for driving the air in the purification air channel to flow; and

a speed regulator 3 including an adjustable electrical parameter portion 31 and a rotating portion 32 rotatably connected to the adjustable electrical parameter portion 31, wherein the adjustable electrical parameter portion 31 is electrically connected to the cleaning fan 21, and the rotating portion 32 is linked with the air guide blade 23;

the wind guiding blade 23 is rotated to drive the rotation portion 32 to rotate in a linkage manner, and the rotation portion 32 rotates to adjust the electrical parameter outputted by the purifying fan 21 by the adjustable electrical parameter portion 31, so as to adjust the operation speed of the purifying fan 21.

It can be understood that a fume suction duct is arranged in the main body 1 of the range hood, and a fume inlet of the fume suction duct is communicated with the interior of the room and is usually suspended above the kitchen range so as to suck the fume into the fume suction duct; the smoke outlet of the oil smoke suction duct is communicated with the outside so as to discharge oil smoke to the outside; of course, the oil fume suction duct is internally provided with an oil fume fan for enabling the airflow to flow from the fume inlet to the fume outlet. It can be understood that the range hood main body 1 has the functions of the traditional range hood.

For the air purification device 2, the purification air channel and the oil smoke absorption air channel are independent, of course, an air inlet 201 communicated with the purification air channel is further arranged, and a filtering piece 22 is arranged in the purification air channel. The air intake 201 with the air outlet 202 all communicates indoorly, air intake 201 is used for inhaling the indoor air in kitchen, filters 22 and is used for filtering the purification to the air of inhaling, air outlet 202 is used for discharging back the kitchen indoor air after filtering the purification.

When the air purification device 2 and the cigarette machine main body 1 work cooperatively, most of oil smoke generated in the cooking process is discharged to the outside through the oil smoke suction air duct, a small part of oil smoke can escape to other spaces in a kitchen, and the small part of oil smoke can be further removed through the purification air 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, in the technical solution of the present invention, the rotating portion 32 of the speed regulator 3 is linked with the air guiding blade 23, and the rotation of the rotating portion 32 can adjust the electrical parameter outputted by the adjustable electrical parameter portion 31 for the purification fan 21, so as to adjust the operation rotation speed of the purification fan 21, that is, the operation rotation speed of the purification fan 21 can be adjusted by the rotation of the air guiding blade 23; it can be understood that rotates wind-guiding blade 23, enables air outlet 202 has different air-out directions, and purification fan 21's rotational speed is different, enables air outlet 202's air output is different, and makes air outlet 202's air supply distance and air supply are strong and weak different, so, through speed regulator 3's setting, can realize according to air outlet 202's different air-out directions, regulation and control air outlet 202's air supply distance and air supply are strong and weak to realize the different functions of air purification device 2, and then satisfy user's different demands.

Further, the air outlet 202 is located on the front surface of the air purification apparatus 2, and the air guide blade 23 extends in the transverse direction; thus, referring to fig. 11, when the wind guide blade 23 rotates to guide wind obliquely forwards and upwards, the wind outlet 202 blows wind obliquely forwards and upwards, and the purified wind energy output obliquely forwards and upwards pushes the oil smoke at the upper half part of the kitchen space to flow downwards so as to be brought into air circulation purification, so that 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 typically subject to soot accumulation due to the thermal plume action of the soot. And when the wind guide blade 23 rotates to wind obliquely forward and downward (see fig. 12) or wind horizontally forward, the air outlet 202 blows air obliquely forward and downward or horizontally forward so as to blow the purified clean air to the cookers, thereby providing clean air for the cookers and improving user experience.

Further, when the air guiding blade 23 is rotated to incline forward and upward (see fig. 11), the rotating portion 32 is driven to rotate in a linkage manner to enable the adjustable electrical parameter portion 31 to output a first electrical parameter for the purifying fan 21;

when the air guide blade 23 is rotated to incline towards the front or towards the front lower part (see fig. 12), the rotating part 32 is driven to rotate in a linkage manner, so that the adjustable electrical parameter part 31 outputs a second electrical parameter for the purifying fan 21;

under the first electrical parameter, the purification fan 21 operates at a first rotational speed; under the second electrical parameter, the purification fan 21 operates at a second rotation speed; the first rotational speed is greater than the second rotational speed.

In this embodiment, when the wind guide blade 23 is rotated to incline forward and upward, the purifying fan 21 operates at the first rotation speed, so that the wind outlet 202 inclines forward and upward with a larger wind output, and therefore, the wind power is stronger, the wind supply distance is longer, and the air in the kitchen can be better circularly purified; when the wind guide blades 23 are rotated to incline towards the front or towards the front lower part, the purifying fan 21 operates at a lower second rotating speed, so that the air outlet 202 is inclined towards the front lower part or horizontally blows air towards the front with a smaller air output, the air outlet is softer, clean air can be provided for a cooker in a soft and comfortable air supply mode, and user experience is improved.

Referring to fig. 4 to 9, further, the adjustable electrical parameter portion 31 includes a circuit board 311, a connection terminal 312 disposed on the circuit board 311, and a rotating base 313 disposed on the circuit board 311, the rotating portion 32 is rotatably disposed on the rotating base 313, and the connection terminal 312 is electrically connected to the purifying fan 21. It is understood that the rotation base 313 is provided to facilitate the connection between the rotation portion 32 and the circuit board 311, and to facilitate the stability and smoothness of the rotation portion 32. Without loss of generality, the purification fan 21 is electrically connected with the adjustable electrical parameter part 31 through a lead, and the lead can be conveniently connected with the wiring terminal 312 in a plugging manner; that is, the connection terminal 312 is provided to improve the convenience of electrical connection between the purification fan 21 and the adjustable electrical parameter unit 31.

In this embodiment, optionally, the voltage output by the purifying fan 21 can be adjusted by rotating the rotating part 32 and adjusting the adjustable electrical parameter part 31; that is, in the present embodiment, the operation speed of the purge fan 21 is adjusted by outputting different voltages. However, the design is not limited thereto, and in other embodiments, the operation speed of the purification fan 21 may be adjusted by outputting different currents, in which case, the rotation portion 32 is rotated to adjust the current output by the purification fan 21 by the adjustable electrical parameter portion 31.

Optionally, in this embodiment, the speed regulator 3 is a potentiometer; the potentiometer can adjust the voltage output by the rotating portion 32 thereof, that is, can adjust the voltage output by the purge fan 21, according to the amount of rotation of the rotating portion, thereby adjusting the operation rotation speed of the purge fan 21. In addition, the potentiometer is easy to obtain and low in price, and low-cost realization of products is facilitated. However, the design is not limited thereto, and in other embodiments, the speed regulator 3 may be configured as other electrical components capable of regulating the electrical parameter output by the regulator through the rotation amount of the rotating portion 32.

Referring to fig. 5, 7 and 10, the air guiding vane 23 has a vane rotating shaft, and the rotating portion 32 is connected to the vane rotating shaft through a linkage mechanism, so as to ensure that the rotating portion 32 is driven by linkage when the air guiding vane 23 is rotated, thereby adjusting the electrical parameter outputted by the purifying fan 21 by the adjustable electrical parameter portion 31.

In this embodiment, optionally, the linkage mechanism includes a flat insertion portion 231 disposed at an end of the blade rotating shaft and a slot 321 disposed at an end of the rotating portion 32, and the flat insertion portion 231 is inserted into the slot 321 to ensure that the rotating portion 32 can be driven by the linkage when the wind guiding blade 23 is rotated. Of course, in other embodiments, the positions of the flat plug 231 and the slot 321 may be changed, that is, the flat plug 231 is disposed at the end of the rotating portion 32, and the slot 321 is disposed at the end of the blade rotating shaft. The flat plug-in 231 and the slot 321 are simple in structure and easy to assemble, the production efficiency of products is improved, other accessories are not needed, materials can be reduced, and the product cost is reduced. In addition, in other embodiments, the linkage mechanism may include a coupler, and the rotating portion 32 is coupled to the blade rotating shaft through the coupler.

Referring to fig. 4 to 7, further, an installation portion 211 is disposed beside the air outlet 202, and the speed regulator 3 is installed on the installation portion 211. It will be appreciated that the mounting portion 211 provides a mounting attachment for the speed regulator 3 to facilitate mounting of the speed regulator 3 on a product and to facilitate operational stability of the speed regulator 3.

Alternatively, the speed regulator 3 may be detachably attached to the mounting portion 211 to facilitate repair or replacement of damage to the speed regulator 3.

Alternatively, the mounting portion 211 is provided with a support rib on which the speed regulator 3 is supported. Without loss of generality, the circuit board 311 of the speed regulator 3 is usually supported on the support ribs, so that a heat dissipation gap is formed on the back surface of the circuit board 311 of the speed regulator 3, and a good heat dissipation effect of the speed regulator 3 is ensured.

Alternatively, the support rib includes a first support rib 212 and a second support rib 213 that intersect, and the speed regulator 3 is supported on the first support rib 212 and the second support rib 213. It can be understood that the intersecting first support rib 212 and second support rib 213 have higher structural strength, and provide a more stable support effect for the speed regulator 3. Optionally, one end of the first support rib 212 is connected to the outside of the sidewall of the air outlet 202, and one end of the second support rib 213 is connected to the outside of the sidewall adjacent to the air outlet 202, so as to further improve the strength of the support rib structure.

Optionally, a first connection position is provided at the intersection of the first support rib 212 and the second support rib 213, and the speed regulator 3 is connected to the first connection position. It can be understood that the intersection of the first support rib 212 and the second support rib 213 has higher strength, and is more suitable for setting a connection position; in addition, the position of the intersection of the first support rib 212 and the second support rib 213 is obvious, and an assembler can easily find the position, thereby facilitating the assembly of the product. Of course, a second connection position, a third connection position, and the like for connecting the speed regulator 3 may be provided at other positions of the mounting portion 211. Optionally, a screw hole is formed in the first connecting position, so that a screw can be screwed in after passing through the speed regulator 3, so as to lock the speed regulator 3 on the mounting portion 211, and the mounting manner of the screw locking is stable and reliable; however, the design is not limited thereto, and in other embodiments, the speed regulator 3 may be mounted on the mounting portion 211 by means of clamping or the like.

Furthermore, the range hood further comprises an adjusting piece arranged on the air guide blade 23, and the adjusting piece is used for adjusting the rotating position of the air guide blade 23; it can be understood that the adjusting member can realize the rotation driving of the air guiding blade 23, so as to drive the rotating portion 32 in a linkage manner, thereby adjusting the operation rotation speed of the purifying fan 21.

Referring to fig. 4, 6 and 10, optionally, the air guiding blade 23 has a blade rotating shaft, and the adjusting member is an adjusting wheel 4 disposed on the blade rotating shaft; in this way, the adjustment wheel 4 can be manually rotated to drive the air guide blade 23 to rotate. It can be understood that the adjusting wheel 4 and the blade rotating shaft do not rotate relatively, but the two can be connected by a spline structure, or the end of the blade rotating shaft matched with the adjusting wheel 4 is set as a flat shaft, etc. However, the design is not limited thereto, and in other embodiments, the adjusting member may be further configured as an adjusting block fixedly sleeved on the wind guiding blade 23; in other embodiments, the adjusting member may be further configured as a driving motor to actively drive the air guiding blade 23 to rotate, and particularly, a stepping motor may be configured to drive the air guiding blade 23 to rotate, so that a rotation angle of the air guiding blade 23 can be precisely controlled by the stepping motor, thereby precisely controlling a rotation position of the air guiding blade 23.

Optionally, the adjusting wheel 4 is at least partially exposed, and at least the exposed portion of the adjusting wheel 4 is provided with an anti-slip structure 41, so as to facilitate manual rotation of the adjusting wheel 4, thereby improving the operational convenience of driving the wind-guiding blade 23 to rotate. The anti-slip structure 41 may include, but is not limited to, a plurality of anti-slip ribs provided on the outer circumferential surface of the adjustment wheel 4 at intervals in the circumferential direction thereof, or anti-slip stripes provided on the outer circumferential surface of the adjustment wheel 4, or the like.

Further, the speed regulator 3 and the regulating wheel 4 are respectively arranged at two opposite sides of the air outlet 202; therefore, the spaces on the two sides of the air outlet 202 can be utilized more reasonably, and the structure of the product is more compact. However, the design is not limited thereto, and in other embodiments, the adjusting wheel 4 may be disposed between the speed adjuster 3 and one side of the air outlet 202.

In the present embodiment, referring to fig. 1 to 3, the range hood main body 1 includes a trim cover 11 and a smoke collecting hood 12 provided below the trim cover 11, and the range hood duct is provided inside the trim cover 11. Further, the air purification device 2 is arranged in the decoration cover 11, so that the air purification device 2 is hidden in the decoration cover 11, and the appearance of the range hood is simpler. Without loss of generality, the air outlet 202 is exposed to the front surface of the decoration cover 11, so that the clean air purified by the air purifying device 2 can be sent out to the kitchen space. However, the design is not limited thereto, and in other embodiments, the air purification apparatus 2 may also be externally disposed on the decorative cover 11, for example, it may be disposed on the front side of the decorative cover 11 and above the smoke collecting hood 12; the air purification device 2 is arranged outside the decoration cover 11, so that the internal devices (such as the filter piece 22, the purification fan 21 and the like) can be conveniently maintained and disassembled; it can be understood that the air cleaning device 2 disposed outside the decoration cover 11 does not need to be disassembled and assembled to the decoration cover 11 in the process of disassembling the internal components thereof.

For the technical solution that the air purification device 2 is disposed in the decoration cover 11, optionally, the air outlet 202 is disposed at the lower portion of the decoration cover 11; it can be appreciated that the lower portion of the trim cover 11 is closer to the cook, which is more advantageous for delivering purified clean air to the cook.

Optionally, the air inlet 201 communicated with the purification air duct is exposed at the side surface of the decoration cover 11, so that the oil smoke escaping to the side of the range hood is favorably sucked into the purification air duct to reduce the oil smoke at the side of the range hood; particularly, when a dual-burner kitchen range is used below the range hood, the oil smoke generated during cooking easily escapes from the side of the range hood, and the air inlet 201 exposed at the side of the decorative cover 11 is more beneficial to sucking the oil smoke.

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

It is understood that, in this embodiment, the decoration 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 of the air inlets 201; therefore, once the air with the oil smoke enters the purifying air duct, the filtering of the filtering piece 22 can be obtained, and the probability that the air with the oil smoke pollutes other devices in the purifying air duct is reduced. However, the design is not limited thereto, and in other embodiments, only one filtering element 22 may be disposed near the air outlet 202, so as to purify and discharge the oil smoke in the air.

Optionally, the decoration cover 11 is provided with a filter mounting port 113, and the filter 22 is detachably disposed on the purification air duct through the filter mounting port 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 generally has a certain life, and needs to be replaced after its life is reached, in order to ensure a good purification capacity of the air purification apparatus 2, and moreover, it is advantageous to remove it for cleaning or washing, either periodically or not, in order to prolong its life.

Optionally, a filter cover 25 is arranged on the filter mounting port 113; so, will filter piece 22 certainly filter a mounting hole 113 and pack into and purify the wind channel after, will filter a lid 25 lid and close and filter a mounting hole 113, can avoid filtering piece 22 and shake out, improve the structural stability of product, can also avoid foreign matter etc. to get into from filtering a mounting hole 113 simultaneously and purify in the wind channel.

Optionally, the air purifying device 2 further comprises 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 can be understood that the provision of the independent purifying housing 24 can more accurately limit the purifying air duct, so as to accurately guide the trend of the purifying air flow and improve the purifying efficiency, and in addition, the purifying housing 24 can more conveniently provide the filter element 22 and the purifying fan 21 with attachment; however, the design is not limited to this, and in other embodiments, a partition plate or the like may be simply provided in the decoration cover 11 to separate the purification air duct. Without loss of generality, the purifying housing 24 is provided with a mounting opening 203 corresponding to the filter mounting opening 113, and the filter element 22 is detachably connected with the purifying housing 24 through the filter mounting opening 113 and the mounting opening 203.

In this embodiment, the filter cover 25 provided in the filter attachment port 113 is connected to the purge case 24. However, the design is not limited thereto, and in other embodiments, the filter cover 25 may be connected to the decoration cover 11. In addition, in this embodiment, optionally, one side of the filter cover 25 is rotatably connected to the purifying housing 24, and the other side is detachably connected to the purifying housing 24; in this manner, after the filter cover 25 is opened, the filter cover 25 remains attached to the purge housing 24, and the filter cover 25 is prevented from being lost. Further alternatively, the other side of the filter cover 25 can be, but is not limited to, connected to the purification housing 24 by a push-type snap-on switch assembly, so that the filter cover 25 can be conveniently opened and closed by pressing, and the operation is convenient.

Optionally, the filter element 22 is provided in a removable manner in the purification housing 24; it will be appreciated that removal cleaning or replacement of the filter element 22 can be more easily performed by means of pulling.

Optionally, the purification fan 21 is a centrifugal fan, on one hand, the centrifugal fan has large air volume and low noise, so that far air supply can be realized at 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 favorable for realizing air inlet and positive air outlet at two sides.

Further, a centrifugal volute 26 for installing a centrifugal fan is arranged in the purification housing 24, an air outlet side of the centrifugal volute 26 faces downward and is bent forward to extend an air guiding section 27, and the air outlet 202 is formed at a free end of the air guiding section 27. In this embodiment, the air guide section 27 extending by bending can supply air forward when the centrifugal fan is axially perpendicular or nearly perpendicular to the decorative cover 11, and at this time, the installation space in the front-rear direction required by the centrifugal fan is small. It can be understood that if the radial direction of the centrifugal fan is perpendicular or nearly perpendicular to the trim cover 11, the installation space required for the centrifugal fan in the front-rear direction is large because the diameter of the centrifugal fan is generally larger than the axial thickness of the centrifugal fan.

Optionally, the centrifugal volute 26 includes a volute body and a volute cover that are joined to facilitate installation of the centrifugal fan into the centrifugal volute 26. Alternatively, with reference to fig. 4 and 6, the outlet 202 is formed in the housing cover, and accordingly, the speed regulator 3 and the regulating wheel 4 are both provided in the housing cover.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (15)

1. A range hood, comprising:

a cigarette machine main body;

the air purification device is arranged on the cigarette machine main body and is provided with a purification air channel and an air outlet communicated with the purification air channel, and the air purification device comprises an air guide blade and a purification fan, wherein the air guide blade is rotatably arranged at the air outlet, and the purification fan is used for driving the air in the purification air channel to flow; and

the speed regulator comprises an adjustable electrical parameter part and a rotating part which is rotatably connected with the adjustable electrical parameter part, the adjustable electrical parameter part is electrically connected with the purification fan, and the rotating part is linked with the air guide blade;

the wind guide blades are rotated to drive the rotating portion to rotate in a linkage mode, the rotating portion rotates to adjust the electric parameter of the adjustable electric parameter portion to be the electric parameter output by the purifying fan, and therefore the running rotating speed of the purifying fan is adjusted.

2. The range hood according to claim 1, wherein the adjustable electrical parameter portion comprises a circuit board, a connection terminal disposed on the circuit board, and a rotation base disposed on the circuit board, the rotation portion is rotatably disposed on the rotation base, and the connection terminal is electrically connected to the purification fan.

3. The range hood of claim 1, wherein the adjustable electrical parameter is a voltage or a current output by the purification fan by rotating the rotating portion.

4. The range hood of claim 1 wherein the speed regulator is a potentiometer.

5. The range hood of claim 1, wherein the air guide vane has a vane rotating shaft, and the rotating part is connected with the vane rotating shaft through a linkage mechanism.

6. The range hood according to claim 5, wherein the linkage mechanism comprises a flat insertion portion provided at one end of the rotation portion and the vane rotation shaft, and a slot provided at the other end of the rotation portion and the vane rotation shaft, and the flat insertion portion is inserted into the slot.

7. The range hood of claim 1 wherein a mounting portion is disposed adjacent to the outlet, and the speed regulator is mounted to the mounting portion.

8. The range hood of claim 7 wherein the mount is provided with first and second intersecting support ribs, the speed adjusters being supported on the first and second support ribs.

9. The range hood according to claim 8, wherein a first connection location is provided at an intersection of the first support rib and the second support rib, and the speed regulator is connected to the first connection location.

10. The range hood according to claim 1, further comprising an adjusting member disposed on the air guide blade, wherein the adjusting member is configured to adjust a rotational position of the air guide blade.

11. The range hood of claim 10 wherein the air guide vane has a vane pivot, and the adjusting member is an adjusting wheel disposed on the vane pivot.

12. The range hood of claim 11, wherein at least a portion of the adjustment wheel is exposed, and at least the exposed portion of the adjustment wheel is provided with an anti-slip structure.

13. The range hood of claim 11 wherein the speed governor and the governor wheel are disposed on opposite sides of the air outlet.

14. The range hood of any one of claims 1 to 13, wherein the air outlet is located on a front surface of the air purification device, and the air guide blade extends in a transverse direction.

15. The range hood of claim 14, wherein when the air guide vane is rotated to incline forward and upward, the rotating portion is driven to rotate in a linkage manner to enable the adjustable electrical parameter portion to output a first electrical parameter for the purification fan;

when the wind guide blades are rotated to incline towards the front or towards the front lower part, the wind guide blades are linked to drive the rotating part to rotate to enable the adjustable electrical parameter part to output a second electrical parameter for the purifying fan;

operating the purification fan at a first rotational speed under the first electrical parameter; under the second electrical parameter, the purification fan operates at a second rotating speed; the first rotational speed is greater than the second rotational speed.

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