Range hood

Abstract

The present invention discloses a range hood, comprising: a range hood body; an air purification device, which is arranged on the range hood body and has a purification air duct and an air outlet connected to the purification air duct, the air purification device including air guide blades rotatably arranged on the air outlet and a purification fan for driving the air flow in the purification air duct; and a speed regulator, which includes an adjustable electrical parameter part and a rotating part rotatably connected to the adjustable electrical parameter part, the adjustable electrical parameter part is electrically connected to the purification fan, and the rotating part is linked to the air guide blades; the air guide blades are rotated to drive the rotating part to rotate, and the electrical parameters output by the adjustable electrical parameter part to the purification fan are adjusted by the rotating part, thereby adjusting the operating speed of the purification fan. The technical solution of the present invention can realize different functions of the air purification device and meet the different needs of users.

Description

Technical Field

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

[0002] Cooking produces fumes, which not only pollute the air but also harm human health. Traditional range hoods quickly exhaust fumes outdoors, reducing air pollution and health risks. However, some fumes will escape from traditional range hoods during cooking and dissipate into the kitchen. This fumes still cause pollution and harm human health.

[0003] To further reduce the pollution of kitchen air by cooking fumes and their harm to human health, the range hood of this invention incorporates an air purification device in addition to the main hood body. This device absorbs and purifies cooking fumes that escape into the kitchen space. However, the air purification device has a relatively limited function and is unable to meet the diverse needs of customers. Summary of the Invention

[0004] The main purpose of the present invention is to provide a range hood, which aims to realize different functions of an air purification device and meet different needs of users.

[0005] To achieve the above-mentioned object, the range hood proposed by the present invention comprises:

[0006] Range hood body;

[0007] an air purification device, provided on the range hood body, and having a purification air duct and an air outlet connected to the purification air duct, the air purification device including air guide blades rotatably provided on the air outlet, and a purification fan for driving the air flow in the purification air duct; and

[0008] A speed regulator, comprising an adjustable electrical parameter portion and a rotating portion rotatably connected to the adjustable electrical parameter portion, wherein the adjustable electrical parameter portion is electrically connected to the purification fan, and the rotating portion is linked to the air guide blades;

[0009] The air guide blades are rotated to drive the rotating part to rotate, and the electrical parameters output by the adjustable electrical parameter part to the purification fan are adjusted by the rotation of the rotating part, thereby adjusting the operating speed of the purification fan.

[0010] Rotating the air guide blades can make the air outlet have different air outlet directions, and when the rotation speed of the purification fan is different, the air outlet volume of the air outlet can be different, and the air supply distance and air supply strength of the air outlet can be different. In this way, through the setting of the speed regulator, the air supply distance and air supply strength of the air outlet can be regulated according to the different air outlet directions of the air outlet, thereby realizing different functions of the air purification device and meeting the different needs of users.

[0011] Optionally, the adjustable electrical parameter portion includes a circuit board, a wiring terminal provided on the circuit board, and a rotating base provided on the circuit board. The rotating portion is rotatably provided on the rotating base, and the wiring terminal is electrically connected to the purification fan.

[0012] Among them, the provision of the rotating base is beneficial to the stability and smoothness of the rotation of the rotating part; the provision of the connecting terminals can improve the convenience of achieving electrical connection between the purification fan and the adjustable electrical parameter part.

[0013] Optionally, the rotating part can be rotated to adjust the voltage or current output by the adjustable electrical parameter part to the purification fan. That is, the operating speed of the purification fan can be adjusted by outputting different voltages or currents.

[0014] Optionally, the speed regulator is a potentiometer; potentiometers are easy to obtain and relatively low in price, which is conducive to low-cost implementation of the product.

[0015] Optionally, the air guide blade has a blade shaft, and the rotating portion is connected to the blade shaft via a linkage mechanism to ensure that the rotating portion can be driven in conjunction with the rotation of the air guide blade.

[0016] Optionally, the linkage mechanism includes a flat insert portion provided at one end of the rotating portion and the blade shaft, and a slot provided at the other end, and the flat insert portion is inserted into the slot.

[0017] The matching structure of the flat insert and the slot is simple and easy to assemble, which is beneficial to improving the production efficiency of the product and does not require other accessories, which can reduce materials and reduce product costs.

[0018] Optionally, a mounting portion is provided next to the air outlet, and the speed regulator is mounted on the mounting portion.

[0019] The mounting portion can provide mounting support for the speed regulator, so as to facilitate the installation of the speed regulator on the product and be beneficial to the working stability of the speed regulator.

[0020] Optionally, the mounting portion is provided with a first supporting rib and a second supporting rib intersecting each other, and the speed regulator is supported on the first supporting rib and the second supporting rib.

[0021] The intersecting first support ribs and second support ribs have higher structural strength and can provide a more stable support effect for the speed regulator.

[0022] Optionally, a first connection position is provided at the intersection of the first supporting rib and the second supporting rib, and the speed regulator is connected to the first connection position.

[0023] The intersection of the first support rib and the second support rib has higher strength and is more suitable for setting a connection position; in addition, the intersection of the first support rib and the second support rib is obvious, and the assembler can easily find the position, thereby facilitating the assembly of the product.

[0024] Optionally, the range hood further comprises an adjusting member provided on the air guide blade, the adjusting member being used to adjust the rotational position of the air guide blade. The air guide blade can be driven to rotate by the adjusting member.

[0025] Optionally, the air guide blade has a blade shaft, and the adjusting member is an adjusting wheel provided on the blade shaft; thus, the air guide blade can be driven to rotate by manually rotating the adjusting wheel.

[0026] Optionally, the adjusting wheel is at least partially exposed to the outside, and at least the portion of the adjusting wheel exposed to the outside is provided with an anti-slip structure to facilitate manual rotation of the adjusting wheel, thereby improving the operational convenience of driving the air guide blades to rotate.

[0027] Optionally, the speed regulator and the regulating wheel are arranged on opposite sides of the air outlet; in this way, the space on both sides of the air outlet can be more reasonably utilized, making the structure of the product more compact.

[0028] Optionally, the air outlet is located on the front side of the air purification device, and the air guide blades extend laterally; in this way, the air outlet can be driven to face the front by the guide blades. When the air outlet is tilted toward the front and upward to discharge air, the oil smoke in the upper half of the kitchen space can be pushed downward to be incorporated into the air circulation purification. When the air outlet is tilted toward the front and downward to discharge air or discharges air horizontally toward the front, the purified clean air can be blown toward the cook, providing the cook with clean air and improving the user experience.

[0029] Optionally, when the air guide blade is rotated to tilt forward and upward, the rotating part is driven to rotate so that the adjustable electrical parameter part outputs the first electrical parameter for the purification fan;

[0030] When the air guide blade is rotated to tilt forward or forward and downward, the rotating part is driven to rotate so that the adjustable electrical parameter part outputs a second electrical parameter for the purification fan;

[0031] Under the first electrical parameters, the purification fan operates at a first speed; under the second electrical parameters, the purification fan operates at a second speed; the first speed is greater than the second speed.

[0032] In this way, when the air guide blade is rotated to tilt forward and upward, the purification fan operates at the larger first speed, so that the air outlet tilts forward and upward to discharge air with a larger air volume. Not only is the wind force stronger, but the air supply distance is also longer, which can better circulate and purify the air in the kitchen; and when the air guide blade is rotated to tilt forward or forward and downward, the purification fan operates at the smaller second speed, so that the air outlet tilts forward and downward to discharge air or discharges air horizontally toward the front with a smaller air volume. The air outlet is softer, and can provide clean air to the cook in a soft and comfortable air supply method, thereby improving the user experience.

[0033] In the technical solution of the present invention, the rotating portion of the speed regulator is linked to the air guide blades, and rotation of the rotating portion can adjust the electrical parameters output by the adjustable electrical parameter portion to the purifying fan, thereby adjusting the operating speed of the purifying fan. That is, the operating speed of the purifying fan can be adjusted by rotating the air guide blades. It can be understood that rotating the air guide blades can cause the air outlet to have different air outlet directions. Different speeds of the purifying fan can also cause different air outlet volumes, resulting in different air delivery distances and air delivery intensities. In this way, by setting the speed regulator, the air delivery distance and air delivery intensities of the air outlet can be regulated according to the different air delivery directions of the air outlet, thereby achieving different functions of the air purification device and meeting the different needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0035] Figure 1 This is a structural diagram of an embodiment of a range hood of the present invention;

[0036] Figure 2 for Figure 1 Schematic diagram of the structure of the mid-range hood after removing the decorative cover and filter;

[0037] Figure 3 for Figure 1 Schematic diagram of the explosion structure of the medium-sized range hood;

[0038] Figure 4 It is a schematic diagram of the structure between the speed regulator, the wind guide blades and the regulating wheel;

[0039] Figure 5 for Figure 4 A magnified schematic diagram of point A in the middle;

[0040] Figure 6 for Figure 4 Front view structural diagram of the middle structure;

[0041] Figure 7 for Figure 6 A magnified schematic diagram of point B in the middle;

[0042] Figure 8 for Figure 4 A schematic diagram of the side structure of the middle structure;

[0043] Figure 9 for Figure 8 Enlarged schematic diagram of point C in the middle;

[0044] Figure 10 for Figure 4 Schematic diagram of the structure between the middle guide blade and the rotating wheel;

[0045] Figure 11 for Figure 1 A schematic diagram of the structure of the air purification device of the range hood with the air guide blades extending forward and upward;

[0046] Figure 12 for Figure 11 Schematic diagram of the structure of the air purification device with the air guide blades in the state of extending and tilting forward and downward.

[0047] Description of Figure Numbers:

[0048] Label name Label name 1 Range hood body 11 Decorative cover 12 Fume hood 111 Return air vent 112 Air outlet 113 Filter installation port 2 Air purification device 21 Purification fan 22 filter element 23 Air guide blades 231 Flat plug 211 Installation Department 212 The first supporting rib 213 Second support rib 24 Purification shell 25 Filter cover 201 air inlet 202 air outlet 203 Install the port 26 Centrifugal volute 27 Air guide section 3 speed regulator 31 Adjustable electrical parameters 32 Rotating part 311 circuit boards 312 Terminal Blocks 313 Rotating base 321 slots 4 Adjustment wheel 41 Anti-slip structure

[0049] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0051] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0052] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0053] The present invention provides a range hood.

[0054] Reference Figures 1 to 4 In one embodiment of the present invention, the range hood comprises:

[0055] Range hood body 1;

[0056] An air purification device 2 is provided on the range hood body 1 and has a purification air duct and an air outlet 202 connected to the purification air duct. The air purification device 2 includes an air guide blade 23 rotatably provided on the air outlet 202 and a purification fan 21 for driving the air flow in the purification air duct; and

[0057] The speed regulator 3 includes 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 purification fan 21 , and the rotating portion 32 is linked to the air guide blades 23 ;

[0058] The air guide blades 23 are rotated to drive the rotating part 32 to rotate, and the rotating part 32 is rotated to adjust the electrical parameters output by the adjustable electrical parameter part 31 to the purification fan 21, thereby adjusting the operating speed of the purification fan 21.

[0059] As can be understood, the range hood body 1 is provided with a range hood duct. The range hood duct's smoke inlet connects to the room and is typically suspended above the kitchen stove to draw smoke into the duct. The range hood duct's smoke outlet connects to the outside of the room to exhaust the smoke outdoors. Of course, a range hood fan is provided within the range hood duct to direct airflow from the smoke inlet to the smoke outlet. As can be understood, the range hood body 1 functions as a traditional range hood.

[0060] The air purification device 2 has a separate purification duct from the oil fume extraction duct. However, it also includes an air inlet 201 connected to the purification duct, and a filter element 22 is provided within the purification duct. The air inlet 201 and the air outlet 202 are both connected to the interior of the kitchen. The air inlet 201 draws in air from the kitchen, the filter element 22 filters and purifies the inhaled air, and the air outlet 202 discharges the filtered and purified air back into the kitchen.

[0061] When the air purification device 2 works in conjunction with the range hood main body 1, most of the oil smoke generated during the cooking process is discharged to the outside through the oil smoke suction duct, and a small part of the oil smoke will escape to other spaces in the kitchen. This small part of the oil smoke can be further removed through the purification duct of the air purification device 2, thereby further reducing the pollution of the air environment by oil smoke and the damage to human health.

[0062] In addition, in the technical solution of the present invention, the rotating part 32 of the speed regulator 3 is linked to the air guide blades 23, and the rotation of the rotating part 32 can adjust the electrical parameters output by the adjustable electrical parameter part 31 to the purification fan 21, thereby adjusting the operating speed of the purification fan 21, that is, the operating speed of the purification fan 21 can be adjusted by rotating the air guide blades 23; it can be understood that rotating the air guide blades 23 can make the air outlet 202 have different air outlet directions, and when the speed of the purification fan 21 is different, the air outlet volume of the air outlet 202 can be different, and the air supply distance and air supply strength of the air outlet 202 can be different. In this way, through the setting of the speed regulator 3, the air supply distance and air supply strength of the air outlet 202 can be controlled according to the different air outlet directions of the air outlet 202, thereby realizing different functions of the air purification device 2, and thus meeting the different needs of users.

[0063] Furthermore, the air outlet 202 is located on the front of the air purification device 2, and the air guide blades 23 extend in the transverse direction; Figure 11When the air guide blades 23 rotate to guide the air in an upward and forward direction, the air outlet 202 tilts forward and upward to discharge the air. The purified air output in an upward and forward direction can push the oil smoke in the upper part of the kitchen space downward to be incorporated into the air circulation purification, thereby further reducing the oil smoke in the kitchen and improving the overall air quality of the kitchen space. In particular, due to the effect of the hot plume of oil smoke, oil smoke usually accumulates in the upper part of the kitchen space. When the air guide blades 23 rotate to guide the air in an upward and forward direction (see Figure 12 ) or when the air is directed horizontally forward, the air outlet 202 is tilted forward and downward or horizontally forward to blow the purified clean air toward the cook, providing the cook with clean air and improving the user experience.

[0064] Further, when the wind guide blade 23 is rotated to tilt forward and upward (see Figure 11 ), which drives the rotating part 32 to rotate until the adjustable electrical parameter part 31 outputs the first electrical parameter for the purification fan 21;

[0065] When the wind guide blade 23 is rotated to tilt forward or downward (see Figure 12 ), and drives the rotating part 32 to rotate so that the adjustable electrical parameter part 31 outputs a second electrical parameter for the purification fan 21;

[0066] Under the first electrical parameters, the purification fan 21 operates at a first speed; under the second electrical parameters, the purification fan 21 operates at a second speed; the first speed is greater than the second speed.

[0067] In this embodiment, when the air guide blades 23 are rotated to tilt forward and upward, the purification fan 21 operates at the larger first speed, so that the air outlet 202 tilts forward and upward to discharge air with a larger air volume. Not only is the wind force stronger, but the air supply distance is also longer, which can better circulate and purify the air in the kitchen; and when the air guide blades 23 are rotated to tilt forward or forward and downward, the purification fan 21 operates at the smaller second speed, so that the air outlet 202 tilts forward and downward to discharge air or discharges air horizontally toward the front with a smaller air volume. The air outlet is softer, and can provide clean air to the cook in a soft and comfortable air supply method, thereby improving the user experience.

[0068] Reference Figures 4 to 9Furthermore, the adjustable electrical parameter part 31 includes a circuit board 311, a terminal block 312 provided on the circuit board 311, and a rotating base 313 provided on the circuit board 311. The rotating part 32 is rotatably provided on the rotating base 313, and the terminal block 312 is electrically connected to the purification fan 21. It can be understood that the provision of the rotating base 313 can facilitate the connection between the rotating part 32 and the circuit board 311, and is beneficial to the stability and smoothness of the rotation of the rotating part 32. Without loss of generality, the purification fan 21 is electrically connected to the adjustable electrical parameter part 31 through a wire, and the wire can be conveniently connected to the terminal block 312 by plugging and unplugging; that is, the provision of the terminal block 312 can improve the convenience of realizing the electrical connection between the purification fan 21 and the adjustable electrical parameter part 31.

[0069] In this embodiment, the rotating portion 32 can optionally be rotated to adjust the voltage output by the adjustable electrical parameter portion 31 to the purification fan 21; that is, in this embodiment, the operating speed of the purification fan 21 is adjusted by outputting different voltages. However, the present design is not limited to this. In other embodiments, the operating speed of the purification fan 21 can also be adjusted by outputting different currents. In this case, rotating the rotating portion 32 can adjust the current output by the adjustable electrical parameter portion 31 to the purification fan 21.

[0070] Optionally, in this embodiment, the speed regulator 3 is a potentiometer; the potentiometer can adjust the voltage output according to the rotation amount of its rotating portion 32, that is, it can adjust the voltage output by the purification fan 21, thereby adjusting the operating speed of the purification fan 21. In addition, potentiometers are easy to obtain and relatively low in price, which is conducive to the low-cost implementation of the product. However, the present design is not limited to this. In other embodiments, the speed regulator 3 can also be configured as other electrical components that can adjust the electrical parameters of the output by the rotation amount of its rotating portion 32.

[0071] Reference Figure 5 、 Figure 7 and Figure 10 Furthermore, the air guide blade 23 has a blade shaft, and the rotating part 32 is connected to the blade shaft through a linkage mechanism to ensure that when the air guide blade 23 is rotated, the rotating part 32 can be driven in conjunction, thereby adjusting the electrical parameters output by the adjustable electrical parameter part 31 for the purification fan 21.

[0072] In this embodiment, the linkage mechanism optionally includes a flat insert 231 disposed at the end of the blade shaft and a slot 321 disposed at the end of the rotating portion 32. The flat insert 231 is inserted into the slot 321 to ensure that the rotating portion 32 is driven in conjunction with the rotation of the air guide blade 23. Of course, in other embodiments, the positions of the flat insert 231 and the slot 321 can be interchanged, that is, the flat insert 231 is disposed at the end of the rotating portion 32, and the slot 321 is disposed at the end of the blade shaft. The mating structure of the flat insert 231 and the slot 321 is simple and easy to assemble, which is beneficial for improving product production efficiency. It also eliminates the need for additional accessories, reduces material requirements, and lowers product costs. Furthermore, in other embodiments, the linkage mechanism may include a coupling, through which the rotating portion 32 is linked to the blade shaft.

[0073] Reference Figures 4 to 7 Furthermore, a mounting portion 211 is provided next to the air outlet 202, and the speed regulator 3 is mounted on the mounting portion 211. It can be understood that the mounting portion 211 can provide a mounting support for the speed regulator 3, so as to facilitate the installation of the speed regulator 3 on the product and facilitate the working stability of the speed regulator 3.

[0074] Optionally, the speed regulator 3 is detachably connected to the mounting portion 211 to facilitate repair or replacement of the speed regulator 3 if damaged.

[0075] Optionally, the mounting portion 211 is provided with support ribs, and the speed regulator 3 is supported on the support ribs. Without loss of generality, the circuit board 311 of the speed regulator 3 is typically supported on the support ribs so that a heat dissipation gap is formed on the back side of the circuit board 311 of the speed regulator 3, thereby ensuring good heat dissipation of the speed regulator 3.

[0076] Optionally, the support ribs include intersecting first and second support ribs 212, 213, and the speed regulator 3 is supported on the first and second support ribs 212, 213. It will be appreciated that intersecting first and second support ribs 212, 213 provide greater structural strength and more stable support for the speed regulator 3. Optionally, one end of the first support rib 212 is connected to the outer side of the side wall of the air outlet 202, and one end of the second support rib 213 is connected to the outer side of the side wall adjacent to the air outlet 202, thereby further enhancing the strength of the support rib structure.

[0077] Optionally, a first connection point 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 point. It is understood that the intersection of the first support rib 212 and the second support rib 213 has high strength and is more suitable for providing a connection point. In addition, the intersection of the first support rib 212 and the second support rib 213 is clearly located, making it easy for assemblers to locate the location, thereby facilitating product assembly. Of course, second and third connection points, etc., for connecting the speed regulator 3 may also be provided at other locations on the mounting portion 211. Optionally, a screw hole is provided at the first connection point for a screw to pass through the speed regulator 3 and then be screwed in, thereby locking the speed regulator 3 to the mounting portion 211. This screw-locking installation method is stable and reliable. However, the present design is not limited to this. In other embodiments, the speed regulator 3 may also be mounted to the mounting portion 211 by means of a snap-fit ​​or other method.

[0078] Furthermore, the range hood also includes an adjusting member provided on the air guide blade 23, and the adjusting member is used to adjust the rotation position of the air guide blade 23; it can be understood that the air guide blade 23 can be driven to rotate by the adjusting member, thereby driving the rotating part 32 in conjunction with the operating speed of the purification fan 21.

[0079] Reference Figure 4 、 Figure 6 and Figure 10 Optionally, the air guide blade 23 has a blade shaft, and the adjustment member is an adjustment wheel 4 provided on the blade shaft; in this way, the air guide blade 23 can be driven to rotate by manually rotating the adjustment wheel 4. It is understood that relative rotation does not occur between the adjustment wheel 4 and the blade shaft. The two can be connected by, but not limited to, a spline structure, or the end of the blade shaft that cooperates with the adjustment wheel 4 can be configured as a flat shaft. However, the present design is not limited to this. In some other embodiments, the adjustment member can also be configured as an adjustment block that is sleeved on the air guide blade 23; and in some other embodiments, the adjustment member can also be configured as a drive motor to actively drive the air guide blade 23 to rotate. In particular, a stepping motor can be provided to drive the air guide blade 23 to rotate. The stepping motor can accurately control the rotation angle of the air guide blade 23, thereby accurately controlling the rotation position of the air guide blade 23.

[0080] 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 to facilitate manual rotation of the adjusting wheel 4, thereby improving the ease of operation in driving the air guide blades 23 to rotate. The anti-slip structure 41 may include, but is not limited to, a plurality of anti-slip ribs spaced along the circumference of the adjusting wheel 4, or anti-slip grooves provided on the outer circumference of the adjusting wheel 4.

[0081] Furthermore, the speed adjuster 3 and the adjustment wheel 4 are located on opposite sides of the air outlet 202. This allows for more efficient use of the space on either side of the air outlet 202, resulting in a more compact product. However, the present design is not limited thereto; in other embodiments, the adjustment wheel 4 may be located between the speed adjuster 3 and one side of the air outlet 202.

[0082] In this embodiment, referring to Figures 1 to 3 The range hood body 1 includes a decorative cover 11 and a fume hood 12 disposed below the decorative cover 11, and the fume duct is disposed within the decorative cover 11. Furthermore, the air purification device 2 is disposed within the decorative cover 11. Thus, the air purification device 2 is hidden within the decorative cover 11, making the appearance of the range hood more concise. Without loss of generality, the air outlet 202 is exposed on the front of the decorative cover 11 so that the clean air purified by the air purification device 2 can be delivered to the kitchen space. However, the present design is not limited thereto. In other embodiments, the air purification device 2 may also be externally disposed within the decorative cover 11. For example, it may be disposed on the front side of the decorative cover 11 and located above the fume hood 12. Placing the air purification device 2 outside the decorative cover 11 facilitates the maintenance and disassembly of its internal components (e.g., the filter element 22, the purification fan 21, etc.). It is understood that when the air purification device 2 is disposed outside the decorative cover 11, the decorative cover 11 does not need to be disassembled during the removal of its internal components.

[0083] Regarding the technical solution in which the air purification device 2 is arranged in the decorative cover 11, optionally, the air outlet 202 is arranged at the lower part of the decorative cover 11; it can be understood that the lower part of the decorative cover 11 is closer to the cook, which is more conducive to delivering the purified clean air to the cook.

[0084] Optionally, the air inlet 201 connected to the purification duct is exposed on the side of the decorative cover 11. This is conducive to sucking the oil smoke escaping to the side of the range hood into the purification duct, so as to reduce the oil smoke on the side of the range hood; in particular, when a double-burner stove is used under the range hood, the oil smoke generated during cooking is easy to escape from the side of the range hood, and the air inlet 201 exposed on the side of the decorative cover 11 is more conducive to inhaling these oil smoke.

[0085] Optionally, an air inlet 201 is provided on each of two opposing sides of the decorative cover 11 to reduce the amount of oil smoke on both sides of the range hood. Alternatively, the air inlet 201 may be provided on only one of the two sides of the decorative cover 11. Optionally, an air inlet grille is provided on the air inlet 201 to prevent hands and other foreign objects from entering the decorative cover 11.

[0086] It can be understood that in this embodiment, the decorative cover 11 is provided with a return air port 111 corresponding to the air inlet 201 , and is provided with an air supply port 112 corresponding to the air outlet 202 .

[0087] Optionally, two filters 22 are provided, each positioned near one of the air inlets 201. This allows the air laden with oil smoke to be filtered by the filters 22 as soon as it enters the purified air duct, reducing the probability of the air laden with oil smoke contaminating other components within the purified air duct. However, the present design is not limited thereto. In other embodiments, only one filter 22 may be provided near the air outlet 202. This also allows the oil smoke in the air to be purified before being discharged.

[0088] Optionally, the decorative cover 11 is provided with a filter installation opening 113, through which the filter 22 can be detachably mounted in the purified air duct; this facilitates removal, cleaning, or replacement of the filter 22. It will be appreciated that the filter 22 typically has a certain lifespan and needs to be replaced upon reaching the end of its useful life to ensure the air purification device 2 maintains its purification capability. Furthermore, removing the filter 22 for cleaning or washing, whether periodically or irregularly, helps extend its useful life.

[0089] Optionally, a filter cover 25 is provided on the filter installation port 113; in this way, after the filter 22 is installed into the purified air duct from the filter installation port 113, the filter cover 25 is closed on the filter installation port 113, which can prevent the filter 22 from shaking out, improve the structural stability of the product, and at the same time prevent foreign matter from entering the purified air duct from the filter installation port 113.

[0090] Optionally, the air purification device 2 further includes a purification housing 24 disposed in the decorative cover 11, and the purified air duct is at least partially defined by the purification housing 24, and the air inlet 201 is formed with the purification housing 24. It can be understood that the provision of an independent purification housing 24 can more accurately limit the purified air duct, thereby accurately guiding the direction of the purified airflow and improving the purification efficiency. In addition, the purification housing 24 can more conveniently provide the filter element 22 and the purification fan 21 for installation and attachment; however, the present design is not limited to this. In other embodiments, a partition-like component can be simply provided in the decorative cover 11 to isolate the purified air duct. Without loss of generality, the purification housing 24 is provided with an installation port 203 corresponding to the filter element installation port 113, and the filter element 22 is detachably connected to the purification housing 24 through the filter element installation port 113 and the installation port 203.

[0091] It should be noted that, in this embodiment, the filter cover 25 provided on the filter installation port 113 is connected to the purification housing 24. However, the present design is not limited thereto. In other embodiments, the filter cover 25 may also be connected to the decorative cover 11. In addition, in this embodiment, optionally, one side of the filter cover 25 can be rotatably connected to the purification housing 24, and the other side can be detachably connected to the purification housing 24; in this way, after opening the filter cover 25, the filter cover 25 is still connected to the purification housing 24, which can prevent the filter cover 25 from being lost. Further optionally, the other side of the filter cover 25 can be connected to the purification housing 24 by, but not limited to, a press-type snap switch assembly. In this way, the filter cover 25 can be opened and closed by pressing, which is very convenient to operate.

[0092] Optionally, the filter element 22 can be pulled out from the purification housing 24 ; it can be understood that the filter element 22 can be removed, cleaned or replaced more conveniently by pulling out.

[0093] Optionally, the purification fan 21 is a centrifugal fan. On the one hand, the centrifugal fan has a large air volume and low noise, so it can achieve long-distance air supply with low noise; on the other hand, the centrifugal fan has the function of changing the wind direction (axial air inlet, radial air outlet), which is conducive to achieving air inlet on both sides and front air outlet.

[0094] Furthermore, a centrifugal volute 26 for mounting a centrifugal fan is provided within the purification housing 24. The centrifugal volute 26 has an air guide section 27 extending downward and bent forward on its outlet side. The air outlet 202 is formed at the free end of the air guide section 27. In this embodiment, the provision of the bent and extended air guide section 27 enables forward air delivery when the centrifugal fan is axially perpendicular or nearly perpendicular to the decorative cover 11. In this case, the installation space required for the centrifugal fan in the front-to-back direction is relatively small. It is understood that if the radial direction of the centrifugal fan is perpendicular or nearly perpendicular to the decorative cover 11, the installation space required for the centrifugal fan in the front-to-back direction is relatively large, because, typically, the diameter of the centrifugal fan is greater than its axial thickness.

[0095] Optionally, the centrifugal volute 26 includes a volute body and a volute cover that are connected to each other, so that the centrifugal fan can be installed in the centrifugal volute 26. Figure 4 and Figure 6 The air outlet 202 is formed on the volute cover, and correspondingly, the speed regulator 3 and the regulating wheel 4 are also arranged on the volute cover.

[0096] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A range hood, characterized in that: include: Range hood body; an air purification device, provided on the range hood body, and having a purification air duct and an air outlet connected to the purification air duct, the air purification device including air guide blades rotatably provided on the air outlet, and a purification fan for driving the air flow in the purification air duct; and A speed regulator, comprising an adjustable electrical parameter portion and a rotating portion rotatably connected to the adjustable electrical parameter portion, wherein the adjustable electrical parameter portion is electrically connected to the purification fan, and the rotating portion is linked to the air guide blades; The air guide blades are rotated to drive the rotating part to rotate, and the electrical parameters output by the adjustable electrical parameter part to the purification fan are adjusted by the rotation of the rotating part, thereby adjusting the operating speed of the purification fan.

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

3. The range hood according to claim 1, wherein: By rotating the rotating part, the voltage or current output by the adjustable electrical parameter part to the purification fan can be adjusted.

4. The range hood according to claim 1, wherein: The speed regulator is a potentiometer.

5. The range hood according to claim 1, wherein: The wind guide blade has a blade shaft, and the rotating part is connected to the blade shaft through a linkage mechanism.

6. The range hood according to claim 5, wherein: The linkage mechanism includes a flat inserting portion provided at one end of the rotating portion and the blade rotating shaft, and a slot provided at the other end, wherein the flat inserting portion is inserted into the slot.

7. The range hood according to claim 1, wherein: A mounting portion is provided beside the air outlet, and the speed regulator is mounted on the mounting portion.

8. The range hood according to claim 7, wherein: The mounting portion is provided with a first supporting rib and a second supporting rib intersecting each other, and the speed regulator is supported on the first supporting rib and the second supporting rib.

9. The range hood according to claim 8, wherein: A first connection position is provided at the intersection of the first supporting rib and the second supporting rib, and the speed regulator is connected to the first connection position.

10. The range hood according to claim 1, wherein: The range hood further comprises an adjusting member provided on the air guide blade, and the adjusting member is used for adjusting the rotation position of the air guide blade.

11. The range hood according to claim 10, wherein: The wind guide blade has a blade rotating shaft, and the adjusting member is an adjusting wheel arranged on the blade rotating shaft.

12. The range hood according to claim 11, wherein: At least a portion of the adjusting wheel is exposed to the outside, and at least the portion of the adjusting wheel exposed to the outside is provided with an anti-slip structure.

13. The range hood according to claim 11, wherein: The speed regulator and the regulating wheel are arranged on two opposite sides of the air outlet.

14. The range hood according to any one of claims 1 to 13, characterized in that: The air outlet is located on the front side of the air purification device, and the air guide blades extend in the transverse direction.

15. The range hood according to claim 14, wherein: When the air guide blade is rotated to tilt forward and upward, the rotating part is driven to rotate so that the adjustable electrical parameter part outputs the first electrical parameter for the purification fan; When the air guide blade is rotated to tilt forward or forward and downward, the rotating part is driven to rotate so that the adjustable electrical parameter part outputs a second electrical parameter for the purification fan; Under the first electrical parameters, the purification fan operates at a first speed; under the second electrical parameters, the purification fan operates at a second speed; the first speed is greater than the second speed.

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