CN218379546U

CN218379546U - Fume exhaust fan

Info

Publication number: CN218379546U
Application number: CN202222618937.8U
Authority: CN
Inventors: 李平; 吴治明; 郑文渊; 胡远强
Original assignee: Zhongshan Keraly Kitchenware Technology Co ltd
Current assignee: Zhongshan Keraly Kitchenware Technology Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-01-24
Anticipated expiration: 2032-09-30

Abstract

The utility model discloses a range hood, which comprises a range hood body, wherein a guide plate is arranged at the top of the range hood body, a wind channel cavity with a downward opening is arranged in the guide plate, a suction port communicated with the wind channel cavity is arranged at the top of the range hood body, a rectifying back plate is arranged at one side of the guide plate, and a turbulent flow part protruding towards the wind channel cavity is arranged on the rectifying back plate; the other side of the guide plate is provided with a suction mechanism, and an air inlet of the suction mechanism is communicated with the air channel cavity; the suction mechanism is used for sucking the gas in the air channel cavity; when the range hood is used, oil smoke in the range hood body enters the air channel cavity through the suction port, and the air channel cavity is enabled to form a relief structure by arranging the turbulence part protruding towards the air channel cavity on the rectification back plate, so that the turbulence state of air flow is adjusted, the eddy in the air channel cavity is reduced, the air flow is enabled to be more stable and smooth when entering the suction mechanism, the turbulence energy loss in the air channel cavity is reduced, and the noise is reduced.

Description

Fume exhaust fan

Technical Field

The utility model relates to a kitchen appliance technical field, in particular to range hood.

Background

The range hood is a kitchen appliance for purifying a kitchen, is generally arranged above a cooking range and used for exhausting oil fume and gas generated by the cooking range, and the conventional range hood is unreasonable in design of an air channel, so that a vortex is easily generated in the air channel when oil fume is sucked, and the range hood has high noise when in use.

It is seen that improvements and enhancements to the prior art are needed.

SUMMERY OF THE UTILITY MODEL

In view of the above prior art's weak point, the utility model aims to provide a range hood, the vortex in its reducible wind channel makes the air inlet more smooth, very big reduction the noise.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a range hood comprises a range hood body, wherein a guide plate is arranged at the top of the range hood body, an air duct cavity with a downward opening is arranged in the guide plate, a suction opening communicated with the air duct cavity is formed in the top of the range hood body, a rectifying back plate is arranged on one side of the guide plate, and a turbulence part protruding towards the air duct cavity is arranged on the rectifying back plate; a suction mechanism is arranged on the other side of the guide plate, and an air inlet of the suction mechanism is communicated with the air duct cavity; the suction mechanism is used for sucking the gas in the air duct cavity.

In the range hood, the suction mechanism comprises a volute, one side of the volute is provided with a rotating part, a wind wheel assembly is arranged in the volute, and the output end of the rotating part is in transmission connection with the wind wheel assembly; the other side of the volute is connected with the guide plate, and the inner cavity of the volute is communicated with the air duct cavity.

In the range hood, the volute comprises a front plate and a rear plate, the front plate and the rear plate are connected through a coaming, an air outlet is formed in the top of the coaming, the air inlet is located in the rear plate, the rotating part is connected with the front plate through a connecting plate, and the air wheel assembly is located in the coaming.

In the range hood, a screen plate is arranged on the rear plate and positioned at the air inlet.

In the range hood, the wind wheel component comprises a wind wheel rear disc and a wind wheel, the wind wheel is arranged on the periphery of the wind wheel rear disc, and the wind wheel rear disc is in transmission connection with the output end of the rotating part.

In the range hood, the top of guide plate is provided with the roof, be provided with on the roof with rotary part electric connection's the control unit and with the pipe connection spare of air outlet intercommunication.

In the range hood, the suction mechanism further comprises a decorative cover, and the decorative cover is arranged on the periphery of the volute.

In the range hood, an oil smoke cavity is arranged in the range hood body, a separator component communicated with the oil smoke cavity is arranged on one side of the range hood body, and the air duct cavity is communicated with the oil smoke cavity through the suction port.

Has the advantages that:

the utility model provides a range hood, when using, this internal oil smoke of range hood passes through the suction mouth gets into in the wind channel chamber, through set up one on the rectification backplate toward the convex vortex portion in wind channel chamber makes the wind channel intracavity forms undulation structure, adjusts the turbulent state of air current, reduces the vortex in the wind channel intracavity makes the air current get into more stable smooth during suction mechanism, thereby reduces the turbulent energy loss in the wind channel intracavity reduces the noise.

Drawings

Fig. 1 is a schematic view of the overall structure of the range hood provided by the present invention;

fig. 2 is a schematic diagram of the overall structure of the range hood provided by the present invention;

fig. 3 is a first disassembling structural schematic diagram of the range hood provided by the present invention;

fig. 4 is a second schematic view of the disassembly structure of the range hood provided by the present invention;

fig. 5 is a sectional view taken along the direction F-F in fig. 2.

Description of the main element symbols: 1-a range hood body, 11-a smoke extraction port, 12-an oil smoke cavity, 2-a guide plate, 21-an air duct cavity, 3-a rectification back plate, 31-a turbulence part, 4-a suction mechanism, 41-a volute, 42-a rotating part, 43-an air wheel component, 411-a front plate, 412-a back plate, 413-a coaming plate, 414-a screen plate, 421-a connecting plate, 431-an air wheel back plate, 432-an air wheel, 5-a top plate, 6-a pipeline connecting piece, 7-a control unit, 8-a decorative cover and 9-a separator component.

Detailed Description

The utility model provides a range hood, for making the utility model discloses a purpose, technical scheme and effect are clearer, more clear and definite, and it is right that the following refers to the attached drawing and the embodiment of lifting the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the description of the present invention, it should be understood that the terms "middle part", "inside", "outside", etc. indicate the position or positional relationship of the present invention based on the drawings, and are only for convenience of description and simplified description. Furthermore, the terms "first", "second", "third" 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.

Referring to fig. 1 to 5, the present invention provides a range hood, including a range hood body 1, a flow guide plate 2 is disposed on the top of the range hood body 1, an air duct cavity 21 with a downward opening is disposed in the flow guide plate 2, a suction port communicated with the air duct cavity 21 is disposed on the top of the range hood body 1, a rectifying back plate 3 is disposed on one side of the flow guide plate 2, and a flow disturbing portion 31 protruding toward the air duct cavity 21 is disposed on the rectifying back plate 3; a suction mechanism 4 is arranged on the other side of the guide plate 2, and an air inlet of the suction mechanism 4 is communicated with the air duct cavity 21; the suction mechanism 4 is used for sucking the air in the air duct cavity 21.

During the in-service use, the oil smoke in the range hood body 1 passes through the suction mouth gets into in the wind channel chamber 21, because the suction effect of suction mechanism 4, the air current in the wind channel chamber 21 can produce violent flow, leads to produce great noise in the guide plate 2, so through set up one on the rectification backplate 3 toward the convex vortex portion 31 in wind channel chamber 21 makes form the undulation structure in the wind channel chamber 21, adjusts the turbulent state of air current, reduces the vortex in the wind channel chamber 21 makes the air current get into more stable smooth when suction mechanism 4, thereby reduces the turbulent energy loss in the wind channel chamber 21, reduces the noise.

In this embodiment, the spoiler 31 is circular truncated cone-shaped, and the airflow is smoother through the circular truncated cone-shaped spoiler 31, thereby avoiding the problem of local vortex generated in the air duct cavity 21.

As shown in fig. 1 to 5, further, the suction mechanism 4 includes a volute 41, a rotating portion 42 is disposed on one side of the volute 41, a wind wheel assembly 43 is disposed in the volute 41, and an output end of the rotating portion 42 is in transmission connection with the wind wheel assembly 43; the other side of the volute 41 is connected with the flow guide plate 2, and the inner cavity of the volute 41 is communicated with the air duct cavity 21; when the range hood is used, the rotating part 42 drives the wind wheel assembly 43 to rotate, and when the wind wheel assembly 43 rotates, the oil smoke in the wind channel cavity 21 is sucked into the inner cavity of the volute 41, so that the oil smoke is rapidly discharged out of the range hood body 1.

It should be noted that the rotating portion 42 is a conventional motor structure, and the working principle and the overall structure thereof are conventional and will not be described herein again.

As shown in fig. 1 to 5, further, the volute casing 41 includes a front plate 411 and a rear plate 412, the front plate 411 and the rear plate 412 are connected by a shroud 413, an air outlet is provided at the top of the shroud 413, the air inlet is located on the rear plate 412, the rotating portion 42 is connected to the front plate 411 by a connecting plate 421, and the wind wheel assembly 43 is located inside the shroud 413; the front plate 411, the rear plate 412 and the enclosing plate 413 form a volute 41, the oil smoke gas in the air duct cavity 21 is collected by the volute 41, the oil smoke gas flows to an air outlet above the air duct cavity, and in the flowing process, the gas is converted into static pressure energy from a part of the dynamic pressure energy of the air wheel component 43 to form air pressure, so that the gas discharging effect is improved.

As shown in fig. 1 to 5, a mesh plate 414 is disposed on the rear plate 412 at a position of the air inlet; the oil smoke gas is filtered by the mesh plate 414, and waste materials are prevented from entering the volute 41 and damaging the wind wheel assembly 43.

As shown in fig. 1 to 5, further, the wind wheel assembly 43 includes a wind wheel rear disk 431 and a wind wheel 432, the wind wheel 432 is disposed on the periphery of the wind wheel rear disk 431, and the wind wheel rear disk 431 is in transmission connection with the output end of the rotating portion 42; the rotating portion 42 drives the wind wheel 432 to rotate through the wind wheel rear disc 431, so that negative pressure is formed in the volute 41, and therefore, the oil smoke gas in the air duct cavity 21 is sucked into the volute 41, and exhaust is completed.

As shown in fig. 1 to 5, a top plate 5 is disposed on the top of the flow guiding plate 2, and a control unit 7 electrically connected to the rotating portion 42 and a pipe connector 6 communicated with the air outlet are disposed on the top plate 5; an external exhaust duct can be easily connected by an installer through the duct connection member 6, and the operation state of the rotary portion 42 can be controlled through the control unit 7.

It should be noted that the control unit 7 may be an existing controller such as an existing PLC controller and an existing intelligent controller, and the working principle and the overall structure thereof are the prior art and are not described herein again.

As shown in fig. 1 to 5, further, the suction mechanism 4 further includes a decorative cover 8, and the decorative cover 8 is disposed on the periphery of the scroll casing 41; the scroll casing 41 and the rotary portion 42 are protected by the decorative cover 8, and foreign matter in the environment is prevented from entering the scroll casing 41.

As shown in fig. 1 to 5, further, an oil smoke chamber 12 is arranged in the range hood body 1, a separator assembly 9 communicated with the oil smoke chamber 12 is arranged on one side of the range hood body 1, and the air duct chamber 21 is communicated with the oil smoke chamber 12 through the suction port; the oil smoke is condensed and filtered by the separator, so that the filtered oil smoke gas enters the air duct cavity 21 from the oil smoke cavity 12.

It should be noted that the separator assembly 9 is an existing separator structure, and is not described herein again.

In summary, when the range hood is used, the oil smoke in the range hood body 1 enters the air duct cavity 21 through the suction opening, and the flow disturbing portion 31 protruding toward the air duct cavity 21 is arranged on the rectifying back plate 3, so that a fluctuating structure is formed in the air duct cavity 21, the turbulent state of the air flow is adjusted, the vortex flow in the air duct cavity 21 is reduced, the air flow enters the suction mechanism 4 more stably and smoothly, the turbulent energy loss in the air duct cavity 21 is reduced, and the noise is reduced.

It should be understood that equivalents and modifications may be made thereto by those skilled in the art, and all such modifications and alterations are intended to fall within the scope of the appended claims.

Claims

1. A range hood is characterized by comprising a range hood body, wherein a guide plate is arranged at the top of the range hood body, an air channel cavity with a downward opening is arranged in the guide plate, a suction port communicated with the air channel cavity is formed in the top of the range hood body, a rectifying back plate is arranged on one side of the guide plate, and a turbulence part protruding towards the air channel cavity is arranged on the rectifying back plate; a suction mechanism is arranged on the other side of the guide plate, and an air inlet of the suction mechanism is communicated with the air duct cavity; the suction mechanism is used for sucking the gas in the air duct cavity.

2. The range hood of claim 1, wherein the suction mechanism comprises a volute, a rotating part is disposed on one side of the volute, a wind wheel assembly is disposed in the volute, and an output end of the rotating part is in transmission connection with the wind wheel assembly; the other side of the volute is connected with the guide plate, and the inner cavity of the volute is communicated with the air duct cavity.

3. The range hood of claim 2, wherein the volute comprises a front plate and a rear plate, the front plate and the rear plate are connected by a surrounding plate, an air outlet is formed in the top of the surrounding plate, the air inlet is formed in the rear plate, the rotating part is connected with the front plate by a connecting plate, and the air wheel assembly is located in the surrounding plate.

4. The range hood of claim 3, wherein a screen is disposed on the rear plate at the air inlet.

5. The range hood of claim 2, wherein the wind wheel assembly comprises a wind wheel rear disc and a wind wheel, the wind wheel is arranged on the periphery of the wind wheel rear disc, and the wind wheel rear disc is in transmission connection with the output end of the rotating part.

6. The range hood of claim 3, wherein a top plate is disposed on a top of the deflector, and a control unit electrically connected to the rotating portion and a pipe connector communicated with the air outlet are disposed on the top plate.

7. The range hood of claim 2, wherein the suction mechanism further comprises a trim cover disposed about the periphery of the volute.

8. The range hood according to claim 1, wherein a fume chamber is disposed in the range hood body, a separator assembly is disposed on one side of the range hood body and is in communication with the fume chamber, and the air duct chamber is in communication with the fume chamber through the suction opening.