CN213872833U - Smoke exhaust ventilator - Google Patents

Abstract

The utility model relates to a range hood. This range hood includes: the casing and locate fan, ultrasonic device and the device of making an uproar of falling in the casing. The fan comprises a volute and an impeller arranged in the volute, an air channel is formed between the volute and the impeller, and an oil discharge hole communicated with the air channel is formed in the lower side of the volute. The ultrasonic device is used for generating ultrasonic waves to drive the volute and the impeller to vibrate. The noise reduction device is used for collecting noise in the machine shell and generating sound waves offsetting the noise in the machine shell. When the range hood needs to be cleaned, the ultrasonic device is started, the volute and the impeller vibrate by utilizing ultrasonic waves generated by the ultrasonic device, so that oil stains and dust adhered to the volute and the impeller are vibrated away, the oil stains can be removed under the condition that a cleaning agent is not used, and the range hood is environment-friendly and low in cost. Meanwhile, the noise in the casing is collected by the noise reduction device, and sound waves offsetting the noise are sent after the noise is processed and analyzed, so that the purpose of noise reduction is achieved, and user experience is greatly improved.

Description

Smoke exhaust ventilator

Technical Field

The utility model relates to a kitchen appliance technical field especially relates to a range hood.

Background

Ultrasonic cleaning technology is increasingly applied to self-cleaning of kitchen appliances. In the existing kitchen appliances such as a range hood, when ultrasonic cleaning is used, aqueous solutions such as cleaning agents and the like are used as cleaning media, so that a large amount of water is wasted, and the environment is not protected; meanwhile, a great noise is generated in the ultrasonic cleaning process, so that the user experience is not good and the health of the user is not good.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the big and not problem of environmental protection of noise when wasing to current range hood has provided a range hood, and this range hood has self-cleaning function, and the cleaning process environmental protection and the little technological effect of noise.

A range hood, comprising:

a housing;

the fan is arranged in the shell and comprises a volute and an impeller arranged in the volute, an air channel is formed between the volute and the impeller, and an oil discharge hole communicated with the air channel is formed in the lower side of the volute;

the ultrasonic device is arranged in the shell and used for generating ultrasonic waves to drive the volute and the impeller to vibrate;

and the noise reduction device is arranged in the machine shell and is used for collecting the noise in the machine shell and generating sound waves offsetting the noise.

In one embodiment, the ultrasonic device is fixedly connected to the volute.

In one embodiment, the noise reduction device is fixedly connected to the side wall of the casing and is arranged opposite to the impeller.

In one embodiment, the casing comprises an upper shell and a smoke hood, and the fan, the ultrasonic device and the noise reduction device are arranged in the upper shell;

the range hood further comprises an oil screen communicated with the upper shell and the smoke hood.

In one embodiment, the range hood further comprises an oil cup configured to collect oil stains flowing out of the oil net and the oil discharge hole.

In one embodiment, the oil receiving device further comprises an oil receiving disc arranged in the upper shell, wherein the oil receiving disc is provided with a first end and a second end, the first end of the oil receiving disc is fixedly connected to the upper shell, and the second end of the oil receiving disc is positioned below the oil discharge hole;

a flow guide hole is formed in the oil receiving disc, and the second end of the oil receiving disc is positioned above the flow guide hole;

the opening of the oil cup is positioned below the flow guide hole.

In one embodiment, the first end of the drip pan is positioned above the baffle hole.

In one embodiment, the air duct further comprises a check valve, the volute is provided with an air outlet communicated with the air duct, and the check valve is arranged at the air outlet and used for communicating the air outlet with the outside.

In one embodiment, the fan further comprises a motor, wherein the motor is positioned in the shell and is in transmission connection with the impeller;

the range hood further comprises a controller, wherein the controller is in control connection with the motor, the ultrasonic device and the noise reduction device and is used for controlling starting and stopping of the motor, the ultrasonic device and the noise reduction device.

Above-mentioned range hood, when actual operation, when needs wash range hood, start ultrasonic device, the ultrasonic wave that utilizes ultrasonic device to produce makes spiral case and impeller vibration to shake from greasy dirt and the dust of adhesion on spiral case and impeller, the greasy dirt that is shaken from flows into the oil drain hole through the wind channel, and discharges through the oil drain hole, so, can get rid of the greasy dirt under the condition that does not use the sanitizer. Meanwhile, when the ultrasonic device works, the noise reduction device also starts to work, the noise reduction device collects the noise in the shell, and sends out sound waves which are offset with the noise after the noise is processed and analyzed, so that the purpose of reducing the noise is achieved.

Compared with the prior art, the range hood can achieve the self-cleaning effect without a cleaning agent, and is environment-friendly and low in cost. Meanwhile, active noise reduction is realized through the noise reduction device, interference on life of a user is reduced during self-cleaning, and user experience is greatly improved.

Drawings

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 diagram of the extractor hood shown in fig. 1 from another view angle.

Description of reference numerals:

1. a range hood; 11. a housing; 111. an upper shell; 112. a smoke hood; 12. a fan; 121. a volute; 1211. an oil drain hole; 122. an impeller; 123. a motor; 13. an ultrasonic device; 14. a noise reduction device; 15. an oil receiving pan; 151. a flow guide hole; 16. an oil cup; 17. an oil screen; 171. a via hole; 172. a convex brim; 18. a check valve.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating 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 the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 and 2, an embodiment of the present invention provides a range hood 1, which includes a casing 11, and a fan 12, an ultrasonic device 13 and a noise reduction device 14 disposed in the casing 11. The fan 12 includes a volute 121 and an impeller 122 disposed in the volute 121, an air passage is formed between the volute 121 and the impeller 122, and an oil discharge hole 1211 communicating with the air passage is formed at a lower side of the volute 121. The ultrasonic device 13 is used to generate ultrasonic waves to drive the volute 121 and the impeller 122 to vibrate. The noise reduction device 14 is used for collecting noise in the housing 11 and generating ultrasonic waves which counteract the noise in the housing 11.

In the above range hood 1, in actual operation, when the range hood 1 needs to be cleaned, the ultrasonic device 13 is started, the ultrasonic wave generated by the ultrasonic device 13 vibrates the volute 121 and the impeller 122, so as to vibrate off oil stains and dust adhered to the volute 121 and the impeller 122, and the vibrated oil stains flow into the oil discharge hole 1211 through the air duct and are discharged through the oil discharge hole 1211, so that the oil stains can be removed without using a cleaning agent. Meanwhile, when the ultrasonic device 13 works, the noise reduction device 14 also starts to work, the noise reduction device 14 collects noise in the machine shell 11, and sends out sound waves which are offset with the noise after the noise is processed and analyzed, so that the purpose of reducing the noise is achieved.

Compared with the prior art, the range hood 1 can achieve the self-cleaning effect without a cleaning agent, and is environment-friendly and low in cost. Meanwhile, active noise reduction is realized through the noise reduction device 14, interference to life of a user is reduced during self-cleaning, and user experience is greatly improved.

The sound wave generated by the noise reducer 14 to cancel out the noise is a sound wave signal having the same amplitude as the noise and an opposite phase to the noise.

The ultrasonic device 13 comprises an ultrasonic generator and an ultrasonic transducer which are matched with each other, the ultrasonic generator is electrically connected with the ultrasonic transducer, the ultrasonic generator is used for generating a voltage signal for driving the ultrasonic transducer to work, and the ultrasonic transducer is used for converting the received voltage signal into ultrasonic waves to be emitted. The specific structure of the ultrasonic device 13 can refer to the existing structure, and will not be described in detail here.

The noise reduction device 14 comprises a sound wave collector, a sound wave generation device and a processor, wherein the sound wave collector and the sound wave generation device are electrically connected with the processor, the sound wave generation device is the same as the ultrasonic device 13 in principle, the sound wave collector is used for collecting noise in the shell 11, and after the processor analyzes and processes the noise, the sound wave generation device is controlled to generate ultrasonic waves which are offset from the noise. The structure of the noise reducer 14 is not described in detail herein, and reference may be made to the existing noise reducer 14.

It can be understood that, in the above range hood 1, the impeller 122 rotates to generate a negative pressure in the volute 121, and due to the existence of the differential pressure, the oil smoke outside the casing 11 enters the inside of the casing 11 and is discharged to the common flue through the air duct among the impeller 122, the impeller 122 and the volute 121.

In the embodiments of the present invention, the directions "up" and "down" are based on the upper and lower directions in the illustrated direction. Of course, in practical applications, the up and down directions of the illustrated direction may be the up and down directions of the gravity direction.

In some embodiments, the ultrasonic device 13 is affixed to the volute 121. At this time, the mechanical vibration energy of the ultrasonic waves generated by the ultrasonic device 13 directly acts on the scroll 121, and contributes to accelerating the rapid vibration separation of the oil stains attached to the scroll 121 and the impeller 122.

It should be noted that the impeller 122 is rotatably connected to the volute 121. When the volute 121 vibrates, it can also bring the impeller 122 into vibration.

In the embodiment, the ultrasonic device 13 is disposed on the upper side of the scroll casing 121. Due to the arc-shaped structural characteristics of the volute 121 and the impeller 122, oil stains on the upper sides of the volute 121 and the impeller 122 are not easy to shake away, and the ultrasonic device 13 is arranged on the upper side of the volute 121, so that the speed of shaking away the oil stains and dust on the upper sides of the volute 121 and the impeller 122 is increased.

In some embodiments, the noise reducer 14 is fixed to a side wall of the casing 11 and is disposed opposite to the impeller 122. Since the ultrasonic device 13 is directly installed on the volute 121, the vibration generated by the volute 121 and the impeller 122 is most obvious at this time, and the noise reduction device 14 is arranged close to the impeller 122, so that the noise reduction treatment of the noise generated by the volute 121 and the impeller 122 can be accelerated, and the noise reduction effect is improved. Meanwhile, the ultrasonic device 13 is in direct contact with the volute, the oil stain vibration efficiency is highest, and the ultrasonic frequency is favorably reduced, so that the vibration noise is reduced, and the energy is favorably saved.

In some embodiments, referring to fig. 1 and 2, the housing 11 includes an upper shell 111 and a smoke hood 112, the fan 12, the ultrasonic device 13 and the noise reduction device 14 are all disposed in the upper shell 111, and the range hood 1 further communicates with the upper shell 111 and the oil mesh 17 of the smoke hood 112.

In the range hood 1, when the range hood actually works, the impeller 122 rotates to generate negative pressure in the volute 121, and due to the existence of differential pressure, oil smoke outside the casing 11 enters the upper casing 111 through the smoke hood 112 and the oil net 17, and is discharged to a common flue through the air duct among the impeller 122, the impeller 122 and the volute 121.

Wherein, the oil smoke can be partially condensed on the oil screen 17 when passing through the oil screen 17, thereby reducing oil stains on the impeller 122 and the volute 121 and reducing the cleaning frequency of the range hood 1.

In specific embodiments, referring to fig. 1 and 2, the range hood 1 further includes an oil cup 16 configured to collect oil stains flowing out of the oil screen 17 and the oil drain hole 1211.

Preferably, the oil cup 16 is removably attached within the housing 11 to facilitate cleaning of the oil cup 16 by a user.

The oil cup 16 may be in a drawer shape or may be in a snap-fit connection with the housing 11.

In the embodiment, referring to fig. 2, the range hood 1 further includes an oil receiving pan 15 disposed in the upper shell 111, the oil receiving pan 15 has a first end and a second end, the first end of the oil receiving pan 15 is fixedly connected to the upper shell 111, the second end of the oil receiving pan 15 is located below the oil discharge hole 1211, the oil receiving pan 15 is provided with a diversion hole 151, the second end of the oil receiving pan 15 is located above the diversion hole 151, and the opening of the oil cup 16 is located below the diversion hole 151.

In actual use, the oil stain flowing out through the oil drain hole 1211 drops on the second end of the oil receiving pan 15, and since the second end of the oil receiving pan 15 is higher than the guide hole 151, the oil stain dropped on the second end of the oil receiving pan 15 flows to the guide hole 151 by gravity and is collected into the oil cup 16 through the guide hole 151. Therefore, the oil stain vibrated away from the volute 121 and the impeller 122 is guided into the oil cup 16 through the oil receiving disc 15, which is helpful for optimizing the structural layout of the range hood 1.

Further, the first end that connects food tray 15 is located the top of water conservancy diversion hole 151, so, can avoid the greasy dirt to flow to the first end that connects food tray 15 and pollute epitheca 111 to avoid connecing the first end of food tray 15 to take place the oil spilling problem.

In specific embodiments, referring to fig. 1 and 2, the oil screen 17 includes a screen body and a plurality of protruding eaves 172, the screen body has a plurality of through holes 171 corresponding to the plurality of protruding eaves 172 one to one, the protruding eaves 172 are protruded on an inner wall of the screen body close to the upper shell 111, the protruding eaves 172 surround the corresponding through holes 171 and are arranged, and the oil cup 16 is located below the screen body.

During the in-service use, the oil smoke gets into in upper shell 111 through hole 171 to when the inner wall of contacting the net body, the condensation is on the net body, and protruding eaves 172 can block that the greasy dirt of condensation on the net body drops outside the quick-witted shell 11 through hole 171, influences the use, and simultaneously, the greasy dirt through net body condensation flows towards oil cup 16 along the net body, until converging oil cup 16.

Further, the net body is in an inverted funnel shape, and the net body is located in the upper shell 111. The net body of inverted funnel shape for the main aspects of net body are located the below of tip, and via hole 171 is seted up on the lateral wall of net body, helps improving the smoking efficiency of suction ventilator 1 in unit interval. Moreover, the net body is hidden in the upper shell 111, so that the range hood 1 has a more beautiful structure.

In some embodiments, referring to fig. 1 and fig. 2, the range hood 1 further includes a check valve 18, the volute 121 has an air outlet communicated with the air duct, and the check valve 18 is disposed at the air outlet and is used for communicating the air outlet with the outside.

In actual operation, the oil smoke sucked by the impeller 122 is discharged into the public flue through the air duct and the air outlet, and the arrangement of the check valve 18 ensures that the oil smoke can only be discharged into the public flue from the air outlet but cannot flow back into the air duct from the public flue.

The check valve 18 may be a commercially available product, and is not limited thereto.

Further, the air outlet is located at an upper side of the scroll casing 121, so that the discharge of the oil smoke can be accelerated by using a principle that hot air rises.

In addition, in some embodiments, referring to fig. 1, the fan 12 further includes a motor 123, the range hood 1 further includes a controller, the motor 123 is located in the casing 11 and is in transmission connection with the impeller 122, and the controller is in control connection with the motor 123, the ultrasonic device 13 and the noise reduction device 14, and is used for controlling start and stop of the motor 123, the ultrasonic device 13 and the noise reduction device 14.

A control method applied to the controller comprises the following steps:

s1, responding to a cleaning instruction;

and S2, when the motor 123 is detected to be in a stop state, controlling the ultrasonic device 13 and the noise reduction device 14 to be started simultaneously for a preset time.

The range hood 1 is provided with a cleaning button, and when a user presses the cleaning button, a cleaning instruction is triggered. The controller responds to the washing instruction, and indicates that the range hood 1 needs to be washed. At this time, when the controller detects that the motor 123 is in a stop state, which indicates that the range hood 1 is in a non-suction state, the controller controls the ultrasonic device 13 and the noise reduction device 14 to start for a preset time period at the same time, so that the range hood 1 performs automatic cleaning, and self-cleaning of the range hood 1 is realized.

The embodiment of the utility model provides a range hood 1 when range hood 1 is washd to needs, starts ultrasonic device 13, utilizes the ultrasonic wave that ultrasonic device 13 produced to make spiral case 121 and impeller 122 vibrate to shake from greasy dirt and the dust of adhering on spiral case 121 and impeller 122, the greasy dirt that is shaken from flows in oil drain 1211 through the wind channel, and discharges through oil drain 1211, so, can get rid of the greasy dirt under the condition that does not use the sanitizer. Meanwhile, when the ultrasonic device 13 works, the noise reduction device 14 also starts to work, the noise reduction device 14 collects noise in the machine shell 11, and sends out sound waves which are offset with the noise after the noise is processed and analyzed, so that the purpose of reducing the noise is achieved. Compared with the prior art, the range hood 1 can achieve the self-cleaning effect without a cleaning agent, and is environment-friendly and low in cost. Meanwhile, active noise reduction is realized through the noise reduction device 14, interference to life of a user is reduced during self-cleaning, and user experience is greatly improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A range hood, comprising:

a housing (11);

the fan (12) is arranged in the shell (11) and comprises a volute (121) and an impeller (122) arranged in the volute (121), an air channel is formed between the volute (121) and the impeller (122), and an oil discharge hole (1211) communicated with the air channel is formed in the lower side of the volute (121);

the ultrasonic device (13) is arranged in the shell (11) and is used for generating ultrasonic waves to drive the volute (121) and the impeller (122) to vibrate;

the noise reduction device (14) is arranged in the machine shell (11) and is used for collecting noise in the machine shell (11) and generating sound waves which are offset with the noise.

2. The range hood according to claim 1, wherein the ultrasonic device (13) is fixedly connected to the volute (121).

3. The range hood according to claim 2, wherein the noise reduction device (14) is fixedly connected to a side wall of the housing (11) and is disposed opposite to the impeller (122).

4. A range hood according to any one of claims 1 to 3, wherein the casing (11) comprises an upper shell (111) and a hood (112), the fan (12), the ultrasonic device (13) and the noise reduction device (14) being provided in the upper shell (111);

the range hood (1) further comprises an oil screen communicated with the upper shell (111) and the smoke hood (112).

5. The range hood according to claim 4, wherein the range hood (1) further comprises an oil cup (16) configured to collect oil stains flowing from the oil screen and the oil drain hole (1211).

6. The range hood according to claim 5, further comprising an oil receiving pan (15) disposed in the upper shell (111), wherein the oil receiving pan (15) has a first end and a second end, the first end of the oil receiving pan (15) is fixedly connected to the upper shell (111), and the second end of the oil receiving pan (15) is located below the oil drain hole (1211);

a diversion hole (151) is formed in the oil receiving disc (15), and the second end of the oil receiving disc (15) is positioned above the diversion hole (151);

the opening of the oil cup (16) is positioned below the flow guide hole (151).

7. The range hood of claim 6, wherein the first end of the oil pan (15) is located above the deflector hole (151).

8. The range hood according to claim 5, wherein the oil screen comprises a screen body and a plurality of convex eaves (172), the screen body is provided with a plurality of through holes (171) corresponding to the convex eaves (172) in a one-to-one manner;

the convex eaves (172) are convexly arranged on the inner wall, close to the upper shell (111), of the net body, and the convex eaves (172) surround the corresponding through holes (171) to be distributed;

the oil cup (16) is positioned below the net body.

9. The range hood according to any one of claims 1 to 3, further comprising a check valve (18), wherein the volute (121) has an air outlet communicated with the air duct, and the check valve (18) is disposed at the air outlet and used for communicating the air outlet with the outside.

10. The range hood according to any one of claims 1 to 3, wherein the fan (12) further comprises a motor (123), the motor (123) is located in the casing (11) and is in transmission connection with the impeller (122);

the range hood (1) further comprises a controller, wherein the controller is in control connection with the motor (123), the ultrasonic device (13) and the noise reduction device (14) and is used for controlling the starting and stopping of the motor (123), the ultrasonic device (13) and the noise reduction device (14).

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