CN111336569A

CN111336569A - Fume exhaust fan

Info

Publication number: CN111336569A
Application number: CN202010293417.7A
Authority: CN
Inventors: 王宏宇; 梁强; 蒋济武; 饶玉莎
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2020-06-26

Abstract

The invention discloses a range hood, which comprises a body and a cleaning assembly, wherein the cleaning assembly is arranged on the body, an impeller is arranged in the body, the body is provided with a front panel, the cleaning assembly comprises an accommodating box and a heating device, the heating device is connected with the accommodating box and is used for generating a cleaning medium for cleaning the impeller by using the medium in the accommodating box, the front panel is provided with a support, the support is provided with an accommodating space, and the accommodating box can be detachably arranged in the accommodating space. Among the above-mentioned lampblack absorber, accommodate the box through the accommodation space and accept in order to form embedded structure, can make like this hold box and organism and form an organic whole, the structure is compacter, easily saves space, also conveniently holds the dismantlement and the installation of box simultaneously, holds the box and also is difficult for losing relatively.

Description

Fume exhaust fan

Technical Field

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

Background

For the lampblack absorber that has the self-cleaning function, when carrying out self-cleaning, need connect external water box and supply water. However, the external water box is usually independent of the range hood, the placement space of the water box on the range hood is limited, and users need to place or lose the water box, which causes inconvenience in use.

Disclosure of Invention

The embodiment of the invention provides a range hood.

The range hood provided by the embodiment of the invention comprises a machine body and a cleaning assembly, wherein the cleaning assembly is arranged on the machine body, an impeller is arranged in the machine body, the machine body is provided with a front panel, the cleaning assembly comprises an accommodating box and a heating device, the heating device is connected with the accommodating box and is used for generating a cleaning medium for cleaning the impeller by using the medium in the accommodating box, the front panel is provided with a support, the support is provided with an accommodating space, and the accommodating box can be detachably arranged in the accommodating space.

Among the above-mentioned lampblack absorber, accommodate the box through the accommodation space and accept in order to form embedded structure, can make like this hold box and organism and form an organic whole, the structure is compacter, easily saves space, also conveniently holds the dismantlement and the installation of box simultaneously, holds the box and also is difficult for losing relatively.

In some embodiments, the range hood includes an opening and closing panel rotatably connected to the front panel, the accommodating space is provided with an opening for the accommodating box to be taken and placed, and the opening and closing panel is used for closing and opening the opening.

In some embodiments, the range hood includes a first fastener provided on the front panel and a second fastener provided on the opening/closing panel, and the first fastener and the second fastener are cooperatively connected to fix the opening/closing panel to the front panel when the opening/closing panel closes the opening.

In some embodiments, the accommodating box comprises a front plate and a handle, the front plate is provided with a groove, the groove comprises two opposite side edges, and the handle is connected with the two side edges.

In some embodiments, the range hood includes a telescopic member connecting the body and the opening and closing panel.

In some embodiments, the telescopic member is provided with a damping member for slowing down a rotation speed of the opening and closing panel in a case where the opening and closing panel rotates.

In some embodiments, a first water outlet pipe is arranged in the accommodating space, the accommodating box is provided with a second water outlet pipe, and the second water outlet pipe partially sleeves the first water outlet pipe under the condition that the accommodating box is located in the accommodating space.

In some embodiments, the outer wall of the first water outlet pipe is provided with a sealing member, and the sealing member seals a gap between the outer wall of the first water outlet pipe and the inner wall of the second water outlet pipe when the second water outlet pipe is partially sleeved on the first water outlet pipe.

In some embodiments, a stop is provided in the second outlet duct, which seals the second outlet duct in the case of removal of the containment box.

In some embodiments, the receptacle is provided with a fill port, and the cleaning assembly includes a cap that removably seals the fill port.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 to 4 are schematic structural views of a range hood according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a holder and a containment case of an embodiment of the invention;

fig. 6 is an enlarged view of the X portion of fig. 5;

FIG. 7 is a schematic structural view of a stent according to an embodiment of the present invention;

FIG. 8 is an exploded schematic view of a containment case of an embodiment of the present invention;

FIGS. 9-10 are schematic structural views of a stopper according to an embodiment of the present invention;

FIG. 11 is a schematic cross-sectional view of a holder and a housing box according to an embodiment of the present invention.

Description of the main element symbols:

a range hood 100;

the device comprises a machine body 11, an upper end surface 111, a lower end surface 113, an impeller 13, a front panel 15, a bracket 17 and an accommodating space 19;

an opening and closing panel 21, an opening 23 and a telescopic piece 25;

the cleaning assembly 31, the housing box 33, the heating device 35;

a first fastener 41, a bump 42, a second fastener 43, a recess 44, a first water outlet pipe 45, a second water outlet pipe 47 and a water outlet 48;

seal 50, first port 51, second port 53, receiving groove 55, stop 59, spring 591, valve core 592, seal plate 593;

water filling port 61, cover 63, front plate 65, handle 67, recess 69.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The disclosure herein provides many different embodiments or examples for implementing different configurations of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

Referring to fig. 1 to 4, an embodiment of the present invention provides a range hood 100, where the range hood 100 includes a body 11 and a cleaning assembly 31. The cleaning assembly 31 is mounted on the machine body 11, and the impeller 13 is arranged in the machine body 11. The body 11 is provided with a front panel 15. The cleaning assembly 31 comprises a containment box 33 and a heating device 35. The heating device 35 is connected to the housing box 33 and serves to generate a cleaning medium for cleaning the impeller 13 using the medium in the housing box 33. The front panel 15 is provided with a bracket 17, the bracket 17 is provided with an accommodating space 19, and the accommodating box 33 is detachably mounted in the accommodating space 19.

In the above range hood 100, the accommodating box 33 is accommodated through the accommodating space 19 to form an embedded structure, so that the accommodating box 33 and the body 11 are integrated, the structure is more compact, the space is easily saved, meanwhile, the accommodating box 33 is also convenient to detach and install, and the accommodating box 33 is not easy to lose relatively.

It can be understood that the range hood 100 serves to exhaust fumes generated during cooking. In the related art, the range hood has a self-cleaning function, the self-cleaning function is mainly realized by cleaning with steam and water or enhancing the fluidity of oil stains in a heating mode, and the oil stains are separated from the impeller 13 by matching with the rotation of the impeller 13. The main source of steam and water is external water box, need place the outside at the lampblack absorber in the use, can cause the loss like this, and produces inconvenience during the use easily.

The range hood 100 in the embodiment of the invention adopts the mode of embedding the containing box 33 into the range hood 100, so that the containing box 33 is easy to be arranged in the range hood 100, and the operation of the containing box 33 is simplified. The housing box 33 is not easily lost accidentally during long-term use.

Referring to fig. 3, the body 11 is formed with an upper end surface 111 and a lower end surface 113 parallel to each other in the vertical direction. The upper end surface 111 has a larger dimension than the lower end surface 113 so that the front panel 15 has a tendency to tilt (i.e., the front panel 15 forms a smaller angle with the upper end surface 111 than the front panel 15 forms with the lower end surface 113). The bracket 17 is provided on the side close to the lower end surface 113 in the front panel 15. The heating device 35 is disposed in the body 11 on a side close to the upper end surface 111. It is understood that the range hood 100 is generally disposed at a high position (e.g., above a cooking range) so as to absorb upwardly floating oil smoke generated during cooking. The bracket 17 is provided in the front panel 15 on a side close to the lower end surface 113 so that the position of the bracket 17 is not excessively high, thereby facilitating the housing of the accommodation box 33.

Specifically, in the state where the accommodation box 33 is mounted into the accommodation space 19, the medium inside the accommodation box 33, which may be water or other cleaning medium, is acquired by the heating device 35 by means of piping. After the heating device 35 generates the cleaning medium through the acquired medium, the heating device 35 may inject the cleaning medium into the impeller 13 through the nozzle, so that the oil stains attached to the surface of the impeller 13 are removed. In the case where it is necessary to add or replace a medium to or from the accommodation box 33, the accommodation box 33 can be taken out of the accommodation space 19 of the bracket 17 and then replaced in the accommodation space 19.

In addition, the cleaning medium includes, but is not limited to, hot water, steam, detergent, etc., the heating device 35 heats the medium to raise the temperature of the medium, so that the medium is heated, and when the cleaning medium is injected into the impeller 13, the oil stains attached to the surface of the impeller 13 are heated or cleaned by the cleaning medium to reduce the adhesion or decompose, so that the oil stains are more easily removed. In other embodiments, the medium within the containment box 33 may include a cleaning agent for removing oil contamination, increasing the cleaning strength of the oil contamination. The heating device 35 may comprise a steam generator.

Referring to fig. 1 and 2, in some embodiments, the range hood 100 includes a folding panel 21 rotatably connected to the front panel 15. The accommodating space 19 is opened with an opening 23 for taking and placing the accommodating box 33, and the opening and closing panel 21 is used for closing and opening the opening 23. Thus, the accommodation box 33 is not easy to fall and lose, and the range hood 100 is more beautiful.

Specifically, in the illustrated embodiment, the opening 23 is formed in the surface of the front panel 15. The opening 23 is communicated to the accommodating space 19 so that the accommodating box 33 can be accessed in the accommodating space 19 through the opening 23. The opening and closing panel 21 is rotatably connected to the lower end of the front panel 15, and the opening and closing panel 21 rotatably opens the opening 23 so that the accommodation box 33 in the accommodation space 19 can be taken out along the opening 23; with the accommodation box 33 accommodated in the accommodation space 19, the opening and closing panel 21 rotationally closes the opening 23, so that the accommodation box 33 is enclosed in the accommodation space 19, ensuring that the accommodation box 33 does not fall and lose from the accommodation space 19, and the range hood 100 is more aesthetic. In other embodiments, the opening and closing panel 21 is rotatably connected to the upper end of the front panel 15, and the opening 23 of the accommodating space 19 can be closed. Note that, even when the opening/closing panel 21 closes the opening 23, the opening/closing panel 21 does not shield the range hood 100 from the oil smoke.

Referring to fig. 1 and 2, in some embodiments, the range hood 100 includes a first locking member 41 disposed on the front panel 15 and a second locking member 43 disposed on the opening and closing panel 21. With the opening and closing panel 21 closing the opening 23, the first latch 41 is in fit connection with the second latch 43 to fix the opening and closing panel 21 to the front panel 15. Thus, the opening and closing panel 21 can be fixed on the body 11, and the degree of closing the opening 23 is improved.

Specifically, in the embodiment shown in fig. 1, the number of the first locking members 41 is two, and the number of the second locking members 43 is two. The range hood 100 forms left and right sides in a length direction. The two first fasteners 41 are respectively disposed on the left and right sides of the front panel 15, and the two second fasteners 43 are respectively disposed on the left and right sides of the opening and closing panel 21.

Under the condition that the opening and closing panel 21 closes the opening 23, the first fastener 41 and the second fastener 43 on the left side are connected with each other, and the first fastener 41 and the second fastener 43 on the right side are connected with each other, so that the opening and closing panel 21 can be stably fixed to the front panel 15, the opening and closing panel 21 can be ensured not to be opened easily under the condition that the opening 23 is closed, and the accommodating box 33 in the accommodating space 19 is not easy to fall from the opening 23.

In addition, in the illustrated embodiment, the first catch 41 includes a projection 42 and the second catch 43 includes a recess 44. When the opening and closing panel 21 closes the opening 23, the protrusion 42 of the first latch 41 is locked and fixed in the recess 44 of the second latch 43, so as to fix the opening and closing panel 21. In other embodiments, the first latch 41 includes a recess, and the second latch 43 includes a protrusion, which are similar to the above embodiments. The front panel 15 may be provided with one or more first fasteners 41, and the opening/closing panel 21 may be provided with one or more second fasteners 43. And is not particularly limited herein.

Referring to fig. 1 to 4, in some embodiments, the range hood 100 includes a telescopic member 25, and the telescopic member 25 connects the body 11 and the opening and closing panel 21. In this way, the opening and closing angle of the opening and closing panel 21 with respect to the body 11 can be defined.

Specifically, the telescopic member 25 is rotatably connected to the body 11 and the opening and closing panel 21 in a hinged manner. Under the condition that the opening 23 is opened by the opening and closing panel 21, the extensible member 25 is driven by the opening and closing panel 21 to extend along the length direction of the extensible member 25, and under the condition that the extensible member 25 extends to the maximum extension length, the extensible member 25 pulls the opening and closing panel 21 in a limited manner, so that the opening and closing panel 21 cannot be opened continuously, and the opening and closing angle of the opening and closing panel 21 relative to the machine body 11 is limited. The maximum stretching length of the telescopic member 25 can be adjusted according to specific conditions, so that the opening and closing angle of the opening and closing panel 21 relative to the body 11 can be adjusted correspondingly. The opening and closing angle of the opening and closing panel 21 with respect to the body 11 means an angle formed between the opening and closing panel 21 and the front panel 15.

In some embodiments, the telescopic member 25 is provided with a damping member (not shown) for slowing down the rotation speed of the opening and closing panel 21 in case the opening and closing panel 21 rotates. Thus, the situation that the rotation speed of the opening and closing panel 21 is too high when the opening and closing panel is opened can be avoided.

It can be understood that when the user opens the opening and closing panel 21 (i.e. makes the opening and closing panel 21 open the opening 23), the rotation speed of the opening and closing panel 21 may not be controlled in time, so that the opening and closing panel 21 opens too fast to injure the user. Specifically, the damping member is disposed in the telescopic member 25 along the length direction of the telescopic member 25, and under the condition that the telescopic member 25 is extended by the opening and closing panel 21, the damping member in the telescopic member 25 generates a corresponding resistance, so that the opening and closing panel 21 is subjected to a pulling force opposite to the current rotation direction, and the rotation speed of the opening and closing panel 21 is correspondingly reduced. The resistance generated by the damping part can be determined according to specific conditions and can also be calibrated through testing. The damping member may include a spring damper, a hydraulic damper, a pulse damper, an electromagnetic damper, a squeeze film damper, a viscous damper, etc., and the kind of the damping member in other embodiments is not limited herein.

In addition, in the illustrated embodiment, the front panel 15 is provided with a waist hole through which the extensible member 25 passes, and the opening and closing panel 21 drives the extensible member 25 to move, so that the extensible member 25 moves in the waist hole in a limited manner, thereby protecting the extensible member 25.

Referring to fig. 5 and 6, in some embodiments, a first water outlet pipe 45 is disposed in the accommodating space 19, and a second water outlet pipe 47 is disposed in the accommodating box 33. With the accommodation box 33 located in the accommodation space 19, the second outlet pipe 47 partially sleeves the first outlet pipe 45. In this way, the medium inside the housing box 33 can be conveyed to the heating device 35.

Referring to fig. 7 and 8, the first water outlet pipe 45 is protruded on the inner wall of the accommodating space 19. The accommodation box 33 is provided with a water outlet 48. Referring to fig. 11, the outer sidewall of the second outlet pipe 47 and the inner sidewall of the water outlet 48 are both provided with a thread structure, so that the second outlet pipe 47 can fixedly penetrate through the water outlet 48 and communicate with the accommodating box 33. The second outlet pipe 47 has a first port 51 and a second port 53. In the case where the second water outlet pipe 47 is connected to the accommodation box 33, the first port 51 communicates to the inside of the accommodation box 33. In the case where the accommodation box 33 is installed in the accommodation space 19, the first outlet pipe 45 is inserted into the second outlet pipe 47 through the second port 53, so that the second outlet pipe 47 partially sleeves the first outlet pipe 45, so that the first outlet pipe 45 is communicated to the accommodation box 33 through the second outlet pipe 47.

Referring to fig. 6 in conjunction with fig. 9, in some embodiments, the outer wall of the first water outlet pipe 45 is provided with a sealing member 50. In the case that the second outlet pipe 47 is partially sleeved on the first outlet pipe 45, the sealing member 50 seals the interval between the first outlet pipe 45 and the second outlet pipe 47. In this way, the space between the outer wall of the first outlet pipe 45 and the inner wall of the second outlet pipe 47 can be avoided.

In the embodiment shown in fig. 6 and 9, the first water outlet pipe 45 is provided with two receiving grooves 55 along the outer wall. Each receiving groove 55 can receive a sealing element 50, so that the sealing element 50 is tightly attached between the outer wall of the first water outlet pipe 45 and the inner wall of the second water outlet pipe 47, thereby sealing the space between the outer wall of the first water outlet pipe 45 and the inner wall of the second water outlet pipe 47. It can be understood that the number of the sealing members 50 can be increased by increasing the number of the receiving grooves 55, thereby improving the sealing effect. In other embodiments, the outer wall of the first water outlet pipe 45 may be provided with one or more than two accommodating grooves 55. The sealing member 50 may be made of a rubber material and form a sealing ring, so that the sealing effect of the sealing member 50 may be increased.

Referring to fig. 9 and 10, in some embodiments, a stopper 59 is disposed in the second outlet pipe 47. The stopper 59 seals the second outlet pipe 47 in a state where the accommodation box 33 is taken out. Thus, the medium in the housing box 33 can be prevented from leaking out of the second outlet pipe 47 when the housing box 33 is taken out.

Specifically, in the illustrated embodiment, the stop 59 is a one-way valve. The one-way valve includes a spring 591, a valve core 592, and a sealing plate 593. A seal plate 593 is fixed to the other end of the spool 592 toward the inside of the housing case 33. When the housing box 33 is taken out, the spring 591 abuts against the valve core 592, the valve core 592 causes the sealing sheet 593 to seal the channel in the second water outlet pipe 47 due to the elastic force of the spring 591, and the medium in the housing box 33 cannot leak out of the second water outlet pipe 47; in case first outlet pipe 45 is inserted into second outlet pipe 47, first outlet pipe 45 compresses spring 591, so that valve core 592 is forced by spring 591 to push sealing sheet 593, the passage in second outlet pipe 47 is opened, and the medium can be guided along second outlet pipe 47 to first outlet pipe 45 and finally to heating device 35.

Additionally, in other embodiments, the stop 59 may include an elastic membrane (not shown). Referring to fig. 8, the elastic membrane is hermetically disposed at the second opening 53 of the second water outlet pipe 47, and the elastic membrane is provided with a slit. When the housing case 33 is taken out of the housing space 19, the elastic film can seal the gap by its own elastic force, and the second port 53 can be sealed. When the accommodation box 33 is installed in the accommodation space 19, the first water outlet pipe 45 is inserted into the second water outlet pipe 47 through the slit, and the first water outlet pipe 45 may be communicated to the accommodation box 33. In the case of removing the accommodation box 33 from the accommodation space 19, the elastic film reseals the gap, so that the medium inside does not leak out of the second opening 53 after removing the accommodation box 33.

Referring to fig. 8, in some embodiments, the containment box 33 is provided with a water injection port 61. The cleaning assembly 31 includes a cap body 63, and the cap body 63 detachably seals the water filling port 61. Thus, it is possible to easily add or replace the medium in the housing box 33 while preventing the medium from leaking from the water filling port 61.

In the embodiment shown in FIG. 8, the water injection port 61 is provided at the top of the housing box 33, and it is convenient for the user to inject a medium (e.g., water) into the housing box 33 at the top of the housing box 33. In the illustrated embodiment, the water filling port 61 is provided with a protruding edge, and the water filling port 61 can be sealed by the cover 63, so that the medium in the container 33 is prevented from spilling or overflowing from the water filling port 61. In one embodiment, the cover 63 is provided with a rubber seal. In one example, the cap 63 may be coupled to the water filling port 61 by a screw structure.

Referring to fig. 5 and 11, in some embodiments, the containment box 33 includes a front plate 65 and a handle 67. The front plate 65 is provided with a groove 69, the groove 69 comprises two opposite side edges, and the handle 67 is connected with the two side edges. Thus, the accommodation box 33 can be easily taken out, and the front plate 65 can have a flat surface.

Referring to fig. 1-3, the plane of the handle 67 facing the outside of the groove 69 is flush with the front plate 65, the handle 67 is accommodated in the groove 69 of the accommodating box 33, and when the opening 23 is closed by the opening and closing panel 21, the handle 67 does not block the opening and closing panel 21 from closing the opening 23 due to the protrusion on the surface of the front plate 65, which is convenient for the user to operate.

In addition, in the illustrated embodiment, the handles 67 may be fixedly attached to both sides of the recess 69. In other embodiments, the handles 67 may be movably attached to both sides of the recess 69. In one embodiment, the handle 67 and the sides of the groove 69 may be slidably positioned outside the groove 69 via a sliding slot. In another embodiment, the handle 67 and the sides of the groove 69 may be spring loaded to allow the handle 67 to be ejected out of the groove 69. In yet another embodiment, the handle 67 and the two sides of the recess 69 may be connected by a pivot to allow the handle 67 to be rotatably moved out of the recess 69. And is not particularly limited herein.

In the description of the specification, references to the terms "one embodiment", "some embodiments", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a range hood, its characterized in that, includes organism and clean subassembly, clean unit mount is in the organism, be equipped with the impeller in the organism, the organism is equipped with the front panel, clean subassembly is including holding box and heating device, heating device connects hold the box and be used for utilizing medium in holding the box produces the washing medium of impeller, the front panel is equipped with the support, the accommodation space has been seted up to the support, it can install with dismantling the accommodation space to hold the box.

2. The range hood according to claim 1, wherein the range hood comprises an opening and closing panel rotatably connected with the front panel, the accommodating space is provided with an opening for the accommodating box to be taken and placed, and the opening and closing panel is used for closing and opening the opening.

3. A range hood as claimed in claim 2, wherein the range hood comprises a first fastener arranged on the front panel and a second fastener arranged on the opening and closing panel, and the first fastener and the second fastener are connected in a matched manner to fix the opening and closing panel to the front panel under the condition that the opening and closing panel closes the opening.

4. The range hood according to claim 1, wherein the accommodating box comprises a front plate and a handle, the front plate is provided with a groove, the groove comprises two opposite side edges, and the handle is connected with the two side edges.

5. A range hood as claimed in claim 2, comprising a telescopic member connecting the body and the opening and closing panel.

6. A range hood as claimed in claim 5, wherein the telescopic part is provided with a damping part for slowing down the rotation speed of the opening and closing panel when the opening and closing panel rotates.

7. The range hood according to claim 1, wherein a first water outlet pipe is arranged in the accommodating space, the accommodating box is provided with a second water outlet pipe, and the second water outlet pipe is partially sleeved with the first water outlet pipe under the condition that the accommodating box is located in the accommodating space.

8. A range hood as claimed in claim 7, wherein the outer wall of the first water outlet pipe is provided with a sealing member, and the sealing member seals the space between the outer wall of the first water outlet pipe and the inner wall of the second water outlet pipe under the condition that the second water outlet pipe is partially sleeved on the first water outlet pipe.

9. A hood fan according to claim 7, characterized in that a stop is provided in said second outlet duct, said stop sealing said second outlet duct in case said containment box is taken out.

10. A range hood as claimed in claim 1, characterized in that the housing box is provided with a water filling opening, the cleaning assembly comprising a cover which detachably seals the water filling opening.