CN111609444A

CN111609444A - Fume exhaust device and equipment

Info

Publication number: CN111609444A
Application number: CN202010335013.XA
Authority: CN
Inventors: 付成冲; 邓鹏飞; 王秀飞; 李承鹏; 张康康
Original assignee: Haier Smart Home Co Ltd; Qingdao Haier Wisdom Kitchen Appliance Co Ltd
Current assignee: Haier Smart Home Co Ltd; Qingdao Haier Wisdom Kitchen Appliance Co Ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-09-01

Abstract

The application provides a fume extracting and exhausting device and equipment. The application provides a fume exhaust device includes spiral case, motor, impeller and oil net. The motor is arranged on one side of the volute, the impeller is rotationally arranged in the volute, and the motor drives the impeller to rotate in the volute. The oil screen is rotatably arranged at the air inlet of the volute, the motor drives the oil screen to rotate through the speed-increasing transmission, so that the rotating speed of the oil screen is greater than that of the motor, and the rotation of the oil screen can intercept grease in air flow sucked into the air inlet of the volute. Therefore, the high-speed operation of the oil net can be realized without additionally configuring a motor, and higher requirements on corresponding structural design and a control method can not be provided. Before the oil fume enters the volute, the oil fume is efficiently intercepted, and a fan system in the kitchen equipment is protected and the internal cleaning is avoided.

Description

Fume exhaust device and equipment

Technical Field

The application relates to the technical field of household appliances, in particular to an oil fume suction and exhaust device and equipment.

Background

With the rapid development of economic level, the living standard of people is greatly improved, meanwhile, the emphasis on kitchen health is increased, and at present, almost every family is provided with kitchen equipment with an oil fume suction and exhaust device. However, the cleaning of the cooking fume suction and exhaust device becomes a housework which is inevitable for the user during the use of the kitchen equipment. In view of this, a technical scheme for dynamically intercepting harmful substances such as grease from the source to clean the interior of the oil fume suction and exhaust device is provided.

In the prior art, one method is to use an oil net and an impeller to share a motor to perform coaxial and same-speed operation, but because the rotating speed required by the impeller is too low, when the oil net rotates at the same rotating speed, the oil interception efficiency is low due to insufficient rotating speed. And the other method is to separately configure an additional high-rotation-speed motor to drive the oil net to run at a high speed so as to realize effective interception of the grease, but if the high-rotation-speed motor is separately configured, the technical problems of larger equipment volume, complex structural design and control method and the like exist.

Accordingly, there is a need for a range hood to solve the above problems in the prior art.

Disclosure of Invention

The application provides a fume suction and exhaust device and equipment, which are used for solving the technical problems that in the prior art, the high-speed operation of an oil net is realized, and meanwhile, the structural design and the control method are complex and the like.

In a first aspect, the present application provides a range hood, comprising: the device comprises a volute, a motor, an impeller and an oil screen;

the motor is arranged on one side of the volute, the impeller is rotationally arranged in the volute, and the motor is used for driving the impeller to rotate in the volute;

the oil net is rotatably arranged at the air inlet of the volute, the motor drives the oil net to rotate through the speed-increasing transmission, so that the rotating speed of the oil net is larger than that of the motor, and grease in the suction air flow of the air inlet is intercepted through the rotation of the oil net.

In one possible design, an oil screen bracket is arranged on one side of the air inlet of the volute, and the speed-increasing transmission is mounted on the oil screen bracket.

In one possible design, the step-up transmission is a planetary transmission.

In one possible design, the cooking fume extracting apparatus further includes: a coupling;

the output shaft of the motor is connected with the input end of the coupler, the output end of the coupler penetrates through the impeller and then is connected with the input end of the speed-increasing transmission, and the output end of the speed-increasing transmission is connected with the oil net.

In one possible design, the coupling is a universal coupling or an oldham coupling.

In one possible design, the oil screen cover is arranged at the air inlet of the volute;

the oil screen bracket is arranged between the oil screen and the volute.

In one possible embodiment, the projection of the oil screen on the volute covers the air inlet.

Optionally, the oil screen is of a grid structure.

In a second aspect, the application provides a range hood, comprising a fume suction and exhaust device related to the first aspect and the optional scheme.

In a third aspect, the present application provides an integrated cooking stove comprising the lampblack suction and exhaust device according to the first aspect and the optional aspects.

The application provides a suction and exhaust fume device and equipment, this suction and exhaust fume device includes the spiral case, including a motor, an end cap, a controller, and a cover plate, impeller and oil net, wherein, the motor sets up the one side at the spiral case, the impeller rotates and sets up among the spiral case, through motor drive impeller, make the impeller rotate in the spiral case, and rotate the air intake that sets up at the spiral case with the oil net, this motor rotates through speed increasing transmission drive oil net, so that the rotational speed of oil net is greater than the rotational speed of motor, the rotation through the oil net is to intercepting the grease from spiral case air intake inspiratory air current. Therefore, the high-speed operation of the oil net can be realized without additionally configuring a motor, higher requirements on corresponding structural design and a control method are not required, the efficient interception of grease is realized, and the requirements on protection and cleaning-free of a fan system in kitchen equipment are met.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic front view of an integrated cooker according to an embodiment of the present disclosure;

fig. 2 is a schematic side view of an integrated cooker according to an embodiment of the present disclosure;

fig. 3 is a schematic front view of a range hood provided in an embodiment of the present application;

fig. 4 is a schematic cross-sectional structure view of a range hood provided in an embodiment of the present application;

fig. 5 is a schematic cross-sectional structure view of another lampblack suction and exhaust device provided by the embodiment of the application.

In the drawings: 1. a volute; 2. a motor; 3. an impeller; 4. an oil screen; 5. a speed-increasing transmission; 6. an oil screen support; 7. a coupling is provided.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of methods and apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the above-described drawings (if any) are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

At present, almost every household is equipped with kitchen equipment of a fume exhaust device, and in daily life, cleaning of the fume exhaust device becomes a housework which is inevitable for users. In view of this, from the source, harmful substance such as grease is held back to the developments to solve the inside clear technical scheme oil of fume sucking and discharging device.

In the prior art, one scheme is that the oil net and the impeller share the motor, the oil net and the impeller rotate coaxially at the same rotating speed, but the rotating speed required by the impeller is too low, and when the oil net rotates at the same rotating speed, the efficiency of intercepting the grease is low due to insufficient rotating speed. The other scheme is that an additional high-speed motor is independently configured and used for driving the oil net to rotate at a high speed, and therefore oil is effectively intercepted. However, if a high-speed motor is separately configured, the structural design and the control method become more complicated due to the larger volume of the motor, and further, higher requirements are put forward on the design of the oil smoke suction and discharge device.

To the above technical problem among the prior art, this application embodiment provides a fume suction and exhaust device and equipment, and this fume suction and exhaust device includes spiral case, motor, impeller and oil net. The motor is arranged on one side of the volute, the impeller is rotationally arranged in the volute, the impeller is driven by the motor to rotate in the volute, the oil screen is rotationally arranged at the air inlet of the volute, the motor drives the oil screen to rotate through the speed-increasing transmission, so that the rotating speed of the oil screen is greater than that of the motor, and grease sucked into air flow from the air inlet of the volute is effectively intercepted through high-speed rotation of the oil screen. Therefore, the high-speed operation of the oil net can be realized without additionally configuring a motor, the corresponding structural design and the control method are not complicated, the efficient interception of the grease can be realized, and the requirements of protecting and cleaning-free a fan system in kitchen equipment are met.

The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic front view structure diagram of an integrated cooker provided in an embodiment of the present application, and fig. 2 is a schematic side view structure diagram of an integrated cooker provided in an embodiment of the present application, as shown in fig. 1 and fig. 2, where fig. 2 is a schematic side view structure diagram of an integrated cooker shown in fig. 1, a smoke exhaust ventilator 11 provided in an embodiment of the present application can be applied to but not limited to a range hood or an integrated cooker and other devices having smoke exhaust ventilator requirements, and fig. 1 and fig. 2 exemplify an integrated cooker 12, that is, the smoke exhaust ventilator 11 is applied to the integrated cooker 12. It is understood that the cooking fume extracting apparatus 11 is located inside the integrated range 12.

The range hood 11 and the integrated stove 12 are designed according to the distribution of structural components in the integrated stove 12 and the manner of exhausting oil smoke, and are not limited to the positions shown in fig. 1 and 2 provided in the embodiment of the present application, and the range hood 11 and the integrated stove 12 are fixedly connected according to the distribution positions of different components. The smoke exhausting mode of the integrated stove 12 is divided into a side-draft type, a deep well type and a three-face combined type, and the smoke exhausting mode and the type of the integrated stove 12 are not limited in the embodiment of the application.

When the user uses integrated kitchen 12 to cook, the culinary art in-process produces the oil smoke, and produced oil smoke can be through the fume suction and exhaust device 11 that this application embodiment provided, before harmful substance such as grease in the oil smoke gets into the spiral case, through the high-speed operation of oil net, realizes high-efficient interception to it, and need not additionally to dispose the motor and carry out high-speed operation with the drive oil net, and then realizes protection and exempting from the washing to the fan system among the integrated kitchen 12. The embodiment of the application does not limit the type, specific structure and other attributes of the equipment with the oil smoke sucking and exhausting device, and does not limit the connection mode of the oil smoke sucking and exhausting device and the equipment.

Fig. 3 is a schematic front view structure diagram of a smoke exhaust ventilator provided in an embodiment of the present application, and fig. 4 is a schematic cross-sectional structure diagram of the smoke exhaust ventilator provided in the embodiment of the present application, as shown in fig. 3 and fig. 4, the smoke exhaust ventilator provided in the embodiment of the present application includes: volute 1, motor 2, impeller 3 and oil net 4.

The motor 2 is arranged at one side of the volute 1, the impeller 3 is rotationally arranged in the volute 1, and the motor 2 is used for driving the impeller 3 to rotate in the volute 1;

the oil screen 4 is rotatably arranged at an air inlet of the volute 1, the motor 2 drives the oil screen 4 to rotate through the speed-increasing transmission 5, so that the rotating speed of the oil screen 4 is larger than that of the motor 2, and grease in suction air flow of the air inlet is intercepted through rotation of the oil screen 4.

Referring to fig. 3 and 4, the motor 2 is provided at one side of the scroll casing 1, and for example, the motor 2 may be mounted at one side of the scroll casing 1 by bolt coupling. The rotation of the impeller 3 is set in the volute 1, and the motor 2 is used to drive the impeller 3, so that the impeller 3 rotates in the volute 1 for the purpose of air suction.

Rotation setting of oil net 4 is in the air intake department of spiral case 1, and motor 2 can rotate by synchro-driven oil net 4 through speed increasing transmission 5, and speed increasing transmission 5 is through the function of acceleration rate for the rotational speed of oil net 4 can be greater than the rotational speed of motor 2, and oil net 4 rotates with high rotational speed. The oil screen 4 rotates at a high speed, and harmful substances such as grease and the like in airflow sucked by the air inlet of the volute 1 can be effectively intercepted under the action of centrifugal separation.

It is to be noted that the speed increasing transmission 5 may be any transmission having a speed increasing function, for example, a planetary transmission.

A planetary gear transmission is a transmission which utilizes a planetary gear mechanism to realize speed change. Planetary gear mechanisms are so named because they are similar to the sun gear. The sun wheel is arranged in the center of the sun wheel, a plurality of planet wheels rotating around the sun wheel are arranged around the sun wheel, a shared planet carrier is arranged among the planet wheels, and a large gear ring is arranged outside the planet wheels. According to the motion relation of the gear ring, the sun gear and the planet gear, various types of transmission of the transmission can be realized, such as rigid transmission of the input end and the output end, same-direction or reverse transmission of the input end and the output end, transmission ratio change of the input end and the output end, and the like.

In the fume suction and exhaust device provided by the embodiment of the application, when the planetary gear transmission is adopted as the speed-increasing transmission 5, the realized motion relation is that the input end and the output end of the speed-increasing transmission 5 rotate in the same direction so as to accelerate the oil screen 4.

In addition, planetary transmissions typically consist of two to three sets of planetary gear mechanisms, with different combinations achieving different operating ranges. Those skilled in the art can select different combinations of planetary gear mechanisms according to actual conditions to increase the speed of the oil screen 4 according to corresponding operating gears, and the embodiment of the present application is not limited thereto.

It should be understood that the selection of the speed-increasing transmission 5 is not limited to the planetary transmission, and may be selected according to other components or actual conditions in the range hood, and the embodiment of the present application is not limited thereto.

The oil smoke suction and exhaust device comprises a volute, a motor, an impeller and an oil screen, wherein the motor is arranged on one side of the volute, the impeller is rotatably arranged in the volute, and the motor drives the impeller to rotate in the volute. The oil screen is rotatably arranged at the air inlet of the volute, the motor drives the oil screen to rotate through the speed-increasing transmission, so that the rotating speed of the oil screen is greater than that of the motor, and harmful substances such as grease and the like in air flow sucked by the air inlet of the volute are effectively intercepted through high-speed rotation of the oil screen. Therefore, the high-speed operation of the oil net can be realized without additionally arranging a motor, the corresponding structural design and the control method can not become complicated, harmful substances such as grease and the like are efficiently intercepted before oil smoke enters the volute, and the requirements of protecting a fan system in kitchen equipment and avoiding cleaning are met.

In a possible design, referring to fig. 3 and 4, in the range hood provided in the embodiment of the present application, an oil mesh bracket 6 is provided at an air inlet side of the volute 1, and the speed-increasing transmission 5 is mounted on the oil mesh bracket 6.

The rotation setting of oil net 4 is in the air intake department of spiral case 1, sets up oil net support 6 in the air intake side of spiral case 1, installs speed-increasing transmission 5 on oil net support 6, and oil net support 6 can be used for fixed mounting speed-increasing transmission 5 promptly. It should be noted that the material of the oil screen bracket 6 may be selected according to the overall material of the range hood device, and the fixation between the speed-increasing transmission 5 and the oil screen 6 may be achieved by a connection manner such as a bolt, and the embodiment of the present application is not limited thereto.

The oil smoke suction and exhaust device provided by the embodiment is characterized in that an oil screen support is arranged on one side of an air inlet of the volute, the speed-increasing transmission is installed on the oil screen support, the motor drives the oil screen through the speed-increasing transmission, the rotating speed of the oil screen is larger than that of the motor, the oil screen realizes high-speed operation, the high-speed operation of the oil screen effectively separates harmful substances such as grease in air flow sucked by the air inlet of the volute under the action of centrifugal separation, and the purpose of high-efficiency interception is achieved. And then need not extra configuration motor just can realize the high-speed operation of oil net, can not make the corresponding structural design of fume suction and exhaust device and control method become complicated, carries out high-efficient interception to harmful substance such as grease before the oil smoke gets into the spiral case, can reach protection and the exemption from washing demand to fan system in the kitchen equipment.

The speed-increasing transmission 5 has a speed-increasing function and can drive the oil screen 4 to rotate at a high speed under the drive of the motor 2. In order to solve the problem that the transmission is poor due to the fact that the speed-increasing transmission 5 and the motor 2 are not coaxial in the installation process, in one possible design, the oil fume suction and exhaust device provided by the embodiment of the application further comprises a coupler. Fig. 5 is a schematic cross-sectional structure view of another lampblack suction and exhaust device provided by the embodiment of the application, as shown in fig. 5, on the basis of the embodiment shown in fig. 4, the lampblack suction and exhaust device provided by the embodiment of the application further includes: and a coupling 7.

The output shaft of the motor 2 is connected with the input end of the coupler 7, the output end of the coupler 7 is connected with the input end of the speed-increasing transmission 5 after penetrating through the impeller 3, and the output end of the speed-increasing transmission 5 is connected with the oil net 4.

The motor 2 drives the oil screen 4 to rotate at a high speed through the speed-increasing transmission 5, the speed-increasing transmission 5 has various specifications and models, and the specific specification and model can be selected according to actual working conditions, so that the problem of poor transmission caused by the fact that the speed-increasing transmission 2 is not coaxial in the installation process exists.

The coupling 7 is a mechanical part for coupling two shafts, i.e., a driving shaft and a driven shaft, so that they rotate together to transmit torque. Therefore, the fume exhaust and suction device provided by the embodiment of the application adopts the coupler 7 to solve the problem of non-axial between the motor 2 and the speed-increasing transmission 5.

The oil smoke suction and exhaust device provided by the embodiment of the application further comprises a coupler 7. Wherein, the output shaft of the motor 2 is used as a driving shaft and is connected with the input end of the coupler 7. The other end of the coupler 7, that is, the output end, is connected to the input end of the speed-increasing transmission 5 after penetrating through the impeller 3, and then the input end of the speed-increasing transmission 5 is a driven shaft, so that the output shaft of the motor 2 is connected to the input end of the speed-increasing transmission 5 through the coupler 7, and the motor 2 and the speed-increasing transmission 5 can rotate together to transmit torque, that is, the motor 2 and the speed-increasing transmission 5 rotate coaxially.

Further, an output end of the speed increasing transmission 5 is connected to the oil screen 4 to increase the speed of the oil screen 4 so that it can rotate at a high speed.

It can be understood that, in the present embodiment, the connection between the two ends of the coupling 7 and the output shaft of the motor 2 and the input end of the speed-increasing transmission 5 can be bearing connection. The output end of the coupling 7 penetrates the impeller 3 at the geometric center of the impeller 3.

The oil smoke suction and exhaust device provided by the embodiment accelerates an oil net through a speed-increasing transmission, so that the oil net runs at a high speed under the driving of a motor, and a coupler is further arranged for solving the problem of poor transmission caused by different shafts between the speed-increasing transmission and the motor. The input end of the coupler is connected with the output shaft of the motor, the output end of the coupler is connected with the input end of the speed-increasing transmission after penetrating through the impeller, and the output end of the speed-increasing transmission is connected with the oil net. Through setting up the shaft coupling, solved the installation problem of disalignment between motor and the speed increasing transmission for both can rotate jointly in order to transmit the moment of torsion. And then realize that the motor passes through speed increasing transmission drive oil net and carries out high-speed rotation, compare with prior art, need not additionally to dispose the high-speed operation that the motor can realize the oil net alone. Before the oil smoke gets into the spiral case, the high-speed operation of oil net can carry out centrifugal separation to harmful substance such as grease in the oil smoke, realizes effectively intercepting promptly, has avoided harmful substance such as grease to get into the spiral case, realizes the protection and exempting from the washing to fan system.

Optionally, the coupling 7 in the lampblack suction and exhaust device provided by the embodiment of the application may be a universal coupling or a cross sliding coupling.

The universal coupling utilizes the characteristics of the structure thereof, and when the driving shaft and the driven shaft are not on the same axis and have an axis included angle, the continuous rotation of the two connected shafts can be realized, and the torque and the transmission can be reliably transmitted. The universal coupling has the greatest characteristics that the structure of the universal coupling has large angular compensation capacity, the structure of the universal coupling is compact, and the transmission efficiency is high.

It is understood that the two axis clamp angles of the universal couplings of different designs are different, typically between 5 ° and 45 °. The universal coupling is constructed in a cross-axle type, a rzeppa type, or the like. The embodiment of the present application is not limited to which type of universal joint is specifically selected, and those skilled in the art can select the universal joint according to actual conditions.

An oldham coupling, also known as a slipper coupling, consists of two coupling halves with grooves on the end faces and an intermediate disk with teeth on both faces. Because the convex teeth can slide in the grooves, the relative displacement between the two shafts during installation and operation can be compensated. For the selection of the specific model of the cross sliding coupling, a person skilled in the art can perform corresponding matching selection according to actual working conditions, and the embodiment of the present application is not limited thereto.

In a possible design, the oil screen 4 in the range hood provided in the above-mentioned embodiment may be covered at the air inlet of the volute 1, and the oil screen bracket 6 is located between the oil screen 4 and the volute 1.

Referring to fig. 4 or 5, the oil screen 4 is rotatably disposed at an air inlet of the volute 1, and harmful substances such as grease and the like in the air flow sucked by the air inlet of the volute 1 are efficiently intercepted by the high-speed rotation of the oil screen 4. It can be seen that the oil smoke is intercepted by the high speed rotation of the oil mesh 4 before it enters the volute 1. Therefore, the oil screen 4 can be covered at the air inlet of the volute 1, and before the oil smoke enters the volute 1, harmful substances such as grease and the like can be intercepted comprehensively without dead angles.

The oil screen support 6 is arranged between the oil screen 4 and the volute 1, and is used for fixing the speed-increasing transmission 5, and meanwhile, the speed-increasing transmission 5 can be connected with the oil screen 4 to increase the speed of the oil screen 4, so that the oil screen 4 can rotate at a high speed at an air inlet of the volute 1. Before the oil smoke enters the volute 1, the oil smoke effectively intercepts harmful substances such as grease and the like.

According to the oil smoke sucking and exhausting device provided by the embodiment, the oil screen is covered at the air inlet of the volute, and before oil smoke enters the volute, the oil screen rotates at a high speed to intercept harmful substances such as grease and the like comprehensively without dead angles. The oil screen support is arranged between the oil screen and the volute, the speed-increasing transmission is fixed, meanwhile, the oil screen is connected with the speed-increasing transmission, and the speed-increasing transmission accelerates the oil screen, so that the oil screen runs at a high speed.

Optionally, the projection of the oil screen 4 on the volute 1 in the oil fume suction and exhaust device provided in the above embodiments covers the air inlet thereof.

The oil screen 4 is covered at the air inlet of the volute 1 to intercept harmful substances such as grease and the like comprehensively without dead angles. In order to further improve the intercepting efficiency, the shape and the geometric dimension of the oil screen 4 can be matched with the shape and the dimension of the air inlet of the volute 1.

For example, the oil screen 4 is designed to have a shape and a geometric dimension such that a projection of the oil screen 4 on the volute 1 completely covers the air inlet, for example, the oil screen 4 has a circular shape and a size set according to the size of the air inlet, but the projection of the oil screen 4 on the volute 1 should completely cover the whole air inlet. Before the oil fume enters the volute 1, the oil screen 4 rotates at a high speed to efficiently intercept harmful substances such as grease and the like comprehensively without dead angles.

Alternatively, as shown in fig. 3, the oil screen 4 in the range hood provided in the above embodiment may be a grid structure.

When the oil net 4 runs at a high speed, the oil net can intercept harmful substances such as grease in the oil smoke through centrifugal separation. The structure of the oil net 4 is arranged to be in a grid shape, so that harmful substances such as grease and the like can be attached to the oil net 4 more favorably, and cannot enter the volute 1, and the internal part of the fan system is protected and is free from being cleaned.

The embodiment of the present application further provides an apparatus, which is a range hood, wherein the range hood includes any one of the above-mentioned oil smoke exhausting devices, the implementation principle and the technical effect of the included oil smoke exhausting device are similar to those of the above-mentioned embodiment, and this embodiment is not repeated herein. It should be noted that the range hood provided in this embodiment is not limited to the connection manner of all the structures including the range hood.

The embodiment of the present application further provides an apparatus, which is an integrated stove, including any one of the above-mentioned oil fume sucking and exhausting devices in the integrated stove, wherein the implementation principle and the technical effect of the oil fume sucking and exhausting device included therein are similar to those in the above-mentioned embodiment, and this embodiment is not repeated herein. It should be noted that the connection mode of all the structures including the oil smoke exhaust device is not limited in the integrated stove provided in this embodiment.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A kind of oil smoke suction and exhaust device, characterized by that, comprising: the device comprises a volute, a motor, an impeller and an oil screen;

2. The range hood according to claim 1, wherein an oil screen bracket is provided at one side of the air inlet of the volute, and the speed-increasing transmission is mounted on the oil screen bracket.

3. The cooking hood according to claim 2, wherein the speed increasing transmission is a planetary transmission.

4. A smoke exhaust ventilator according to any one of claims 1-3 and further comprising: a coupling;

5. The cooking fume extracting and exhausting apparatus of claim 4, wherein the coupling is a universal coupling or an oldham coupling.

6. The cooking fume extracting and discharging apparatus according to any one of claims 1 to 3, wherein the oil screen is provided at an air inlet of the scroll casing;

the oil screen bracket is arranged between the oil screen and the volute.

7. The range hood of claim 6, wherein a projection of the oil screen on the volute covers the air inlet.

8. A device for exhausting and absorbing cooking fumes according to any one of claims 1 to 3, wherein the oil net is of a grid structure.

9. A range hood, characterized by comprising the cooking fume extracting and discharging apparatus as set forth in any one of claims 1 to 8.

10. An integrated range, characterized by comprising the cooking fume extracting and discharging device as claimed in any one of claims 1 to 8.