CN116839075A - Fume exhauster - Google Patents

Abstract

The invention relates to a range hood, which comprises a shell, a centrifugal wind wheel arranged in the shell, a liquid storage device for storing cleaning liquid, a water pump and a spraying device, wherein an installation seat matched with the liquid storage device is arranged on the shell, a cleaning liquid channel communicated into the shell is arranged in the installation seat, the liquid storage device is arranged to allow the cleaning liquid to flow out to the cleaning liquid channel after being connected with the installation seat, the cleaning liquid channel, the water pump and the spraying device are sequentially communicated, and the spraying device is positioned in the shell and is arranged to spray the cleaning liquid towards the centrifugal wind wheel. The range hood provided by the invention can be applied to the occasion of lampblack suction.

Description

Fume exhauster

Technical Field

The invention belongs to the technical field of household appliances, and particularly relates to a range hood.

Background

As an indispensable kitchen appliance in modern home life, a range hood is used to suck the oil smoke generated during cooking and discharge the oil smoke to the outside, thereby purifying the kitchen environment. The existing range hood with wider use comprises an upper exhaust type range hood, and in the working process of the upper exhaust type range hood, the oil smoke directly enters a fan system and is discharged into a public flue by means of the fan system.

Because the oil smoke with larger particles is easy to adhere to the fan blades and other parts of the fan system, the long-time accumulation can cause the fan system to adsorb a large amount of oil stains, so that the working effect of the range hood is greatly reduced, and the fan system must be cleaned to prevent the performance of the range hood from being influenced.

However, at present, aiming at the cleaning of a fan system, the extractor hood is not only required to be disassembled, but also the greasy dirt attached to the fan blade and other parts of the fan system is extremely difficult to treat, the manual cleaning workload is large, and the fan blade is easy to damage, so that the fan system of the conventional extractor hood is difficult to clean.

Disclosure of Invention

The invention aims to provide a range hood, which is convenient for cleaning a centrifugal wind wheel of the range hood.

In order to achieve the above purpose, the embodiment of the present invention adopts the following technical scheme:

the utility model provides a range hood, includes the casing and installs centrifugal wind wheel in the casing, range hood is still including being used for storing liquid storage device, water pump and spray set of cleaning solution, be provided with on the casing with liquid storage device matched with mount pad, have the cleaning solution passageway in the mount pad, liquid storage device set up to be in with allow after the mount pad is connected cleaning solution to flow out to the cleaning solution passageway, the cleaning solution passageway water pump with spray set communicates in proper order, spray set is located in the casing and set up to be able to be directed towards centrifugal wind wheel sprays the cleaning solution.

In some embodiments of the present invention, the housing includes a middle housing and a volute provided in the middle housing, the centrifugal wind wheel is installed in the volute, the cleaning liquid channel is communicated with the water inlet of the water pump through a first connecting pipe, the water outlet of the water pump is communicated with the water inlet of the spraying device through a second connecting pipe, the spraying device is located in the middle housing, and the water outlet of the spraying device faces the blades of the centrifugal wind wheel.

In some embodiments of the invention, the liquid storage device comprises a liquid storage bottle and a water valve assembly, wherein the water valve assembly is arranged at the bottle mouth of the liquid storage bottle, is communicated with the liquid storage bottle and is used for preventing cleaning liquid from flowing out under the working condition of no external force.

In some embodiments of the invention, the liquid storage device further comprises a bottle cap detachably connected to the mouth of the liquid storage bottle and connected to the water valve assembly.

In some embodiments of the invention, the water valve assembly comprises a water valve seat, a valve body and a water valve cover, the water valve seat is connected with the water valve cover, the valve body is arranged between the water valve seat and the water valve cover, a first end of the valve body is connected with a first end of a spring, a second end of the spring is abutted on the water valve cover, the water valve seat is provided with a water outlet extending from the bottle mouth, and the valve body is arranged to seal the water outlet under the pressure of the spring; the valve body is compressed by the spring under the external acting force, and the valve body releases the blocking of the water outlet;

and a channel which is arranged on the water valve cover or between the water valve cover and the water valve seat and is used for communicating the cavity in the liquid storage bottle with the water outlet of the water valve seat is arranged in a state that the valve body releases the blocking of the water outlet.

In some embodiments of the invention, a water valve rib is arranged on the mounting seat, and the water valve rib is used for extending into the water outlet to open the valve body so as to enable the cleaning liquid to flow out.

In some embodiments of the invention, the water valve seat is provided with an axially extending connector, a clamping hole is arranged on the connector, and a clamping protrusion matched with the clamping hole is arranged on the side wall of the water valve cover.

In some embodiments of the present invention, the liquid storage device further includes a vent pipe to ensure that the liquid storage device can smoothly discharge water in the water discharge process; the breather pipe is positioned in the liquid storage bottle and is connected to the water valve cover; the water valve cover is provided with a first vent hole communicated with the vent pipe; the water valve seat is provided with a second ventilation hole corresponding to the first ventilation hole; the bottle cap is provided with a third vent hole corresponding to the second vent hole.

In some embodiments of the invention, the mounting seat is arranged on the outer side of the middle shell, and the water pump is arranged at the inner assembling position of the back surface of the middle shell; the side wall of the middle shell is provided with an assembly hole, and the second connecting pipe penetrates through the assembly hole and extends to the inner part of the middle shell to be connected with the water inlet of the spraying device.

In some embodiments of the invention, the spray device comprises a spray head, and a spray opening of the spray head faces the centrifugal wind wheel.

According to the range hood provided by the embodiment of the invention, the liquid storage device is used for storing the cleaning liquid, and the water pump is used for pumping the cleaning liquid in the liquid storage device to the spraying device to spray to the centrifugal wind wheel. According to the embodiment, the mounting seat of the cleaning liquid storage device, the water pump and the spraying device are integrally arranged on the range hood, the surface of the centrifugal wind wheel inside the range hood is cleaned at any time, and an external tool is not needed, so that the problems that the working efficiency of the range hood is reduced, the noise is increased and the like due to the fact that oil smoke is accumulated on the surface of the centrifugal wind wheel for a long time are avoided.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

fig. 1 is a schematic view of the front of a range hood;

fig. 2 is a schematic view of the back of the range hood;

fig. 3 is a schematic structural view of a range hood;

fig. 4 is a schematic side view of a range hood;

FIG. 5 is a cross-sectional view taken along the direction A-A in FIG. 4;

FIG. 6 is a cross-sectional view taken in the direction B-B of FIG. 4;

FIG. 7 is an enlarged view of a portion of FIG. 6 at C;

fig. 8 is a schematic structural view of a liquid storage device in the range hood;

fig. 9 is an exploded view of the reservoir of fig. 8.

The various references in the drawings are as follows:

100. a range hood; 101. a main control module; 102. a motor driving module;

10. a middle shell; 11. a mounting base; 111. a cleaning liquid channel; 112. positioning ribs; 113. a water valve stop rib; 12. a wire seal ring; 13. a water inlet sealing ring; 14. a water pump bracket; 15. a first screw; 16. a second screw; 20. a volute; 30. centrifugal wind wheel; 31. an alternating current variable frequency motor; 40. a liquid storage device; 41. a liquid storage bottle; 42. a bottle cap; 43. a water valve seat; 431. a water outlet; 44. a valve body; 45. a spring; 46. a water valve cover; 47. a vent pipe; 48. a first seal ring; 49. a second seal ring; 50. a water pump; 51. a first connection pipe; 52. a second connection pipe; 60. a spray head; 70. noise reduction cover.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "below," "upper," "above," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

As shown in fig. 1 to 4, an embodiment of the present invention proposes a range hood 100, including a housing and a centrifugal wind wheel 30 installed in the housing, the range hood further includes a liquid storage device 40 for storing a cleaning liquid, a water pump 50 and a spraying device, a mounting seat 11 matched with the liquid storage device 40 is disposed on the housing, a cleaning liquid channel 111 is disposed in the mounting seat 11, the liquid storage device 40 is configured to allow the cleaning liquid to flow out to the cleaning liquid channel 111 after being connected with the mounting seat 11, the cleaning liquid channel 111, the water pump 50 and the spraying device are sequentially communicated, and the spraying device is disposed in the housing and is configured to spray the cleaning liquid toward the centrifugal wind wheel 30.

According to the range hood provided by the embodiment of the invention, the liquid storage device is used for storing the cleaning liquid, and the water pump is used for pumping the cleaning liquid in the liquid storage device to the spraying device to spray to the centrifugal wind wheel. According to the embodiment, the mounting seat of the cleaning liquid storage device, the water pump and the spraying device are integrally arranged on the range hood, the surface of the centrifugal wind wheel inside the range hood is cleaned at any time, and an external tool is not needed, so that the problems that the working efficiency of the range hood is reduced, the noise is increased and the like due to the fact that oil smoke is accumulated on the surface of the centrifugal wind wheel for a long time are avoided.

In some embodiments, the housing comprises a middle housing 10 and a volute 20 arranged in the middle housing 10, the centrifugal wind wheel 30 is arranged in the volute 20, the cleaning liquid channel is communicated with a water inlet of the water pump 50 through a first connecting pipe 51, a water outlet of the water pump 50 is communicated with a water inlet of the spraying device through a second connecting pipe 52, the spraying device is arranged in the middle housing 10, and the water outlet of the spraying device faces to blades of the centrifugal wind wheel 30. The first connection pipe 51 and the second connection pipe 52 in this embodiment may be rubber pipes or silicone pipes.

In the range hood provided by the embodiment, the water outlet of the spraying device faces the blades of the centrifugal wind wheel, so that the centrifugal wind wheel can rotate to drive the cleaning liquid to clean each blade of the centrifugal wind wheel when the spraying device sprays the cleaning liquid towards the centrifugal wind wheel, that is, the spraying device is fully combined with the working process of the centrifugal wind wheel, the cleaning effect is further improved, and the problem that the fan system of the existing range hood is difficult to clean is better solved.

In some embodiments, the housing may further include a lower housing coupled to a bottom of the middle housing and an upper housing coupled to a top of the middle housing. The lower shell is provided with an oil smoke suction port, and a cavity in the lower shell is communicated with an inlet of a volute in the middle shell. The upper shell is provided with an oil smoke outlet, and a cavity in the upper shell is communicated with an outlet of a volute in the middle shell.

As shown in fig. 1 to 5, in the range hood 100 according to the present embodiment, the liquid storage device 40 and the water pump 50 are both mounted on the middle housing 10 of the main body, for example, may be mounted on a side surface or a back surface, and the spraying device communicating with the water pump 50 is mounted in the middle housing 10, for example, may be mounted in the volute 20, so as to spray the cleaning liquid to the centrifugal wind wheel 30. On the basis of the above embodiment, as shown in fig. 5, the range hood 100 further includes a main control module 101, a motor driving module 102, and an ac variable frequency motor 31, the scroll casing 20 is installed at an upper position of the flow chamber of the middle casing 10, the centrifugal wind wheel 30 is installed inside the scroll casing 20 and is simultaneously connected to a central shaft of the ac variable frequency motor 31, the ac variable frequency motor 31 is driven by the motor driving module 102, and a rotation speed thereof is intelligently controlled by the main control module 101.

In some embodiments, the main control module 101 may also be connected to a control portion of the water pump 50, and the water pump is controlled to be turned on and off by the main control module. The time period for controlling the water pump to be turned on and off can be set in the main control module.

In some embodiments, the range hood according to the embodiments of the present invention may further include an induction module connected to the main control module, and the induction module sends an induction signal to the main control module, so that the main control module controls the water pump to be turned on and off.

In some embodiments of the present invention, as shown in fig. 1 and 2, a mounting seat 11 for cooperating with a liquid storage device 40 is provided at the outer side of a middle housing 10, as shown in fig. 2 and 3, a water pump 50 is provided at a rear inner assembly position of the middle housing 10, a water pump bracket 14 may be provided at the rear inner portion of the middle housing 10, the water pump bracket 14 is mounted on the middle housing 10 through a plurality of first screws 15, the number of the first screws 15 may be four or more, and the first screws 15 may be self-tapping screws of phi 12 to secure stability of the water pump bracket 14. It can be understood that the liquid storage device 40 is communicated with the water pump 50, and the liquid storage device 40 and the water pump 50 are respectively installed on the side surface and the back surface in this embodiment, so that not only is the installation space of the middle shell 10 fully utilized, but also the flow path of the cleaning liquid is shorter, and the water pump 50 is convenient for pumping and spraying by the spraying device.

Referring to fig. 6 and 7 in combination, the liquid storage device 40 is mounted on the mounting seat 11 and can be communicated with the cleaning liquid channel 111 of the mounting seat 11, so that in this embodiment, two ends of the first connecting pipe 51 are respectively connected with the cleaning liquid channel 111 and the water pump 50, assembly is facilitated, and in addition, a water inlet sealing ring 13 is further arranged at the connection part between the mounting seat 11 and the middle shell 10, so that leakage of cleaning liquid from the mounting seat 11 and the cleaning liquid channel 111 thereof is prevented.

On the basis of the above embodiment, with continued reference to fig. 2, the back surface of the middle housing 10 is provided with an assembly hole, and the second connection pipe penetrates through the assembly hole and extends to the inside of the middle housing to be connected with the water inlet of the spraying device. In one example, a sealing element (such as a sealing ring) 12 is arranged in the assembly hole, a through hole is arranged on the sealing element 12, a second connecting pipe 52 penetrates through the through hole and extends to the inner part of the middle shell to be connected with a water inlet of the spraying device,

the sealing member 12 realizes positioning and fixing of the second connection pipe 52, and improves stability of the second connection pipe 52. In this embodiment, the second connection pipe 52 extends into the middle housing through the assembly hole to communicate with the spraying device, so that winding is not needed, the flow path of the cleaning solution is further shortened, and pumping and spraying are facilitated.

As shown in fig. 3 and 5, in some embodiments of the present invention, the range hood 100 further includes a noise reduction housing 70 mounted on the scroll casing 20, the noise reduction housing 70 being mounted on the surface of the scroll casing 20 by at least three second screws 16, and the second screws 16 may also be self-tapping screws of Φ12.

The spraying device in this embodiment includes a spray head 60, and a spraying opening of the spray head faces the centrifugal wind wheel. The spray head 60 may be mounted on the noise reduction cap 70, and a water inlet of the spray head 60 is communicated with a water outlet of the second connection pipe. An atomizing mechanism may be installed inside the spray head 60 for atomizing the cleaning liquid.

Further, the spray head 60 in this embodiment is configured as a bent pipe type spray head, so that the cleaning solution is conveniently sprayed in the centrifugal wind wheel 30, and the atomization mechanism can ensure that the cleaning solution is more uniform and fine when sprayed, so as to improve the cleaning effect. It should be noted that, when the spraying device works, a user can control the centrifugal wind wheel 30 to start and control the rotation speed thereof, and the centrifugal force generated by the rotation of the centrifugal wind wheel 30 in the volute 20 is utilized to enable the cleaning solution sprayed on the surfaces of the fan blades to continuously flow and spread, so that the cleaning effect on each fan blade of the centrifugal wind wheel 30 is further improved.

In this embodiment, the liquid storage device 40 is detachably connected with the mounting seat 11, when the liquid storage device 40 is independently placed and is not subjected to external force, the cleaning liquid stored in the liquid storage device 40 cannot flow out, after the liquid storage device is connected with the mounting seat 11, the liquid storage device 40 can be opened and the cleaning liquid is allowed to flow into the mounting seat 11, and after the water pump 50 is opened to pump, the cleaning liquid can enter the spraying device through the cleaning liquid channel 111, the first connecting pipe 51, the water pump 50 and the second connecting pipe 52 of the mounting seat 11.

Referring to fig. 6 and 7 in combination with fig. 8 and 9, in some embodiments of the present invention, the liquid storage device 40 includes a liquid storage bottle 41 and a water valve assembly, the water valve assembly is installed at a bottle mouth of the liquid storage bottle 41, the water valve assembly is in communication with the liquid storage bottle 41, and the water valve assembly is used for preventing the cleaning liquid from flowing out under the condition of no external force.

Further, in some embodiments of the present invention, the liquid storage device 40 further includes a bottle cap 42, where the bottle cap 42 is detachably connected to a bottle mouth of the liquid storage bottle 41 and is connected to a water valve assembly, and illustratively, an external thread is provided on the bottle mouth, an internal thread matching with the external thread is provided on an inner side of the bottle cap 42, and the water valve assembly may be clamped on an inner side of the bottle cap 42, so that the bottle cap 42 can be unscrewed from the liquid storage bottle 41 or mounted on the liquid storage bottle 41 together with the water valve assembly, so that a user can conveniently add cleaning liquid and clean the liquid storage bottle 41 and the water valve assembly at any time.

Further, as shown in fig. 8 and 9, in some embodiments of the present invention, the water valve assembly includes a water valve seat 43, a valve body 44 and a water valve cover 46, the water valve seat 43 is buckled with and connected to the water valve cover 46, the water valve seat 43 is communicated with the interior of the liquid storage bottle 41 and has a water outlet 431 extending from the bottle mouth, the valve body 44 is disposed between the water valve seat 43 and the water valve cover 46, a first end of the valve body 44 is connected with a first end of a spring 45, a second end of the spring 45 is abutted against the water valve cover 46, and a second end of the valve body 44 is abutted against a water inlet end of the water outlet 431 by the spring 45. In this embodiment, the spring 45 can apply an elastic force to the valve body 44, and under the action of the elastic force, the valve body 44 seals the water outlet 431 of the water valve seat 43 without receiving any external force, so as to prevent the cleaning liquid from flowing out.

The water valve seat 43 is in communication with the interior of the reservoir 41, and in particular, there may be a channel on the water valve cover or between the water valve cover and the water valve seat that communicates the interior cavity of the reservoir with the water outlet of the water valve seat.

Further, as shown in fig. 9, the water valve assembly further includes a first sealing ring 48 and a second sealing ring 49, referring to fig. 8 in combination, the water outlet 431 of the water valve seat 43 is configured to be cylindrical, and after being assembled, extends out from the through hole of the bottle cap 42, the first sealing ring 48 is disposed between the water outlet 431 and the inner wall of the through hole of the bottle cap 42, so as to not only provide positioning and clamping for connecting the water valve seat 43 with the bottle cap 42, but also prevent leakage of cleaning liquid; a second seal ring 49 is provided between the water valve seat 43 and the water valve cover 46 for preventing the cleaning liquid from flowing out from the outside of both. The second sealing ring 49 is provided with an opening for communicating the cavity inside the liquid storage bottle with the water outlet of the water valve seat.

On the basis of the above embodiment, as shown in fig. 7, in some examples of the present invention, a water valve rib 113 is provided on the mounting seat 11, and the water valve rib 113 extends into the water outlet to press the valve body 44 to open the valve body 44 to allow the cleaning liquid to flow out.

The mounting seat 11 may be further provided with a positioning rib 112, which may be provided as an annular rib, for providing a limit for the liquid storage bottle 41 when the liquid storage bottle 41 is mounted on the mounting seat 11, in this embodiment, the water outlet 431 of the water valve seat 43 is inserted into the inner side of the positioning rib 112, and the first sealing ring 48 is partially located between the positioning rib 112 and the water outlet 431, so as to prevent the cleaning liquid from flowing out from the gap; the water valve blocking rib 113 is disposed at the inner side of the annular positioning rib 112, when the liquid storage device 40 is mounted on the mounting seat 11, the water valve blocking rib 113 can extend into the water outlet 431 and can squeeze the valve body 44, so that the spring 45 is compressed, the valve body 44 moves in a direction away from the water outlet 431, and the blocking is released, so that the cleaning liquid flows out from the water outlet 431.

As shown in fig. 9, in some embodiments of the present invention, the water valve seat is provided with an axially extending connector, the connector is provided with a clamping hole, and a side wall of the water valve cover is provided with a clamping protrusion matched with the clamping hole.

In some examples, the water valve seat 43 is provided with a plurality of axially extending tabs that are looped on the end face of the water valve seat 43 for connection with the water valve cover 46. Illustratively, at least one connecting piece is radially provided with a clamping hole, for example, two connecting pieces located on two opposite sides are respectively provided with a clamping hole, correspondingly, the side wall of the water valve cover 46 is provided with a clamping protrusion matched with the clamping hole, when the water valve cover 46 is buckled with the water valve seat 43, the protrusion of the side wall of the water valve cover 46 can be clamped in the clamping hole due to the fact that the connecting piece can rotate around the end of the water valve seat 43 in a small range when being stressed, and the water valve cover 46 is connected with the water valve seat 43.

In some examples, the water valve cover 46 is a top and side closed cover, with a spring also being provided between the snap hole and the snap protrusion.

When the spring 45 between the water valve seat 43 and the water valve cover 46 applies elastic force to the valve body 44 to seal the valve body 44 at the water outlet 431 of the water valve seat 43, the spring between the clamping hole and the clamping protrusion also applies elastic force to the water valve cover 46 to abut against the bottom surface of the water valve cover 46 and the upper surface of the water valve seat 43, so that the sealing effect on the water outlet 431 can be further achieved, the dual sealing effect on the water outlet 431 can be achieved, and the outflow of cleaning liquid can be effectively prevented.

When the water valve blocking rib 113 extends into the water outlet 431 and presses the valve body 44, so that the spring 45 is compressed, the valve body 44 moves in a direction away from the water outlet 431, and when the blocking of the water outlet 431 is released, the spring 45 applies an upward elastic force to the water valve cover 46, so that the spring between the clamping hole and the clamping protrusion is compressed, the bottom surface of the water valve cover 46 is separated from the upper surface of the water valve seat 43, and a cleaning liquid outflow channel is formed between the outer side wall of the water valve cover 46 and the inner side wall of the water valve seat 43, and between the bottom surface of the water valve cover 46 and the upper surface of the water valve seat 43, so that cleaning liquid flows out from the water outlet 431.

Further, in some embodiments of the present invention, as shown in fig. 8 and 9, the liquid storage device 40 further includes a vent pipe 47 to ensure that the liquid storage device can smoothly discharge water in the water discharge process; the breather pipe 47 is positioned in the liquid storage bottle 41 and is connected to a water valve cover 46, and the water valve cover is provided with a first breather hole communicated with the breather pipe; the water valve seat is provided with a second ventilation hole corresponding to the first ventilation hole; when the bottle cap is connected to the bottle mouth of the liquid storage bottle, a third vent hole corresponding to the second vent hole is formed in the bottle cap.

As shown in fig. 9, in one example, the water valve cover 46 is provided with a connecting portion in a protruding manner, and as shown in fig. 8, the vent pipe 47 is mounted on the connecting portion and kept hollow, the connecting portion is provided with a first vent hole coaxially arranged with the vent pipe 47, and a water-proof and air-permeable membrane can be arranged at the first vent hole, so that the vent pipe 47 can be communicated with the external atmosphere.

When the liquid storage device 40 is mounted on the mounting seat 11, the top end of the ventilation pipe 47 is higher than the liquid level in the liquid storage bottle 41, so that air can enter the liquid storage bottle 41 in the process of discharging the cleaning liquid, and the liquid storage bottle 41 is prevented from being sucked flat due to internal vacuum formed when the water pump 50 pumps the cleaning liquid, namely, the normal liquid discharge of the liquid storage bottle 41 is ensured.

In the embodiment of the present invention, the above exhaust type range hood is merely described as an example. The embodiment of the invention is not limited to the upper exhaust type range hood, but can be other types of range hoods such as a lower exhaust type range hood, a middle island type range hood and the like.

In summary, the range hood 100 according to the present embodiment can be implemented at any time, the liquid storage device 40 can be installed in the installation seat 11 for a long time, and the user can replace and add the cleaning liquid by disassembling the liquid storage device 40; after receiving the cleaning instruction sent by the user, the main control module 101 instructs the water pump 50 to work, the cleaning solution flowing into the installation seat 11 from the liquid storage device 40 is sucked into the water pump 50 along the cleaning solution channel 111 through the first connecting pipe 51 and then sprayed out of the spray head 60 through the second connecting pipe 52, meanwhile, the cleaning solution is continuously atomized by the atomizing structure and then sprayed downwards inside the volute 20, and is attached to the blade surface of the centrifugal wind wheel 30, and meanwhile, the cleaning solution on the blade surface continuously diffuses the cleaning blade under the action of centrifugal wind force. Therefore, the range hood 100 provided by the embodiment is convenient to clean and good in cleaning effect, and solves the problem that the fan system of the existing range hood is difficult to clean.

The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a range hood, includes the casing and installs centrifugal wind wheel in the casing, its characterized in that, range hood still includes liquid storage device, water pump and the spray set who is used for storing the cleaning solution, be provided with on the casing with liquid storage device matched with mount pad, have the cleaning solution passageway in the mount pad, liquid storage device set up to with allow after the mount pad is connected cleaning solution to flow out to the cleaning solution passageway, the cleaning solution passageway the water pump with spray set communicates in proper order, spray set is located in the casing and set up to be able to spray the cleaning solution towards centrifugal wind wheel.

2. The range hood of claim 1, wherein the housing comprises a middle housing and a volute provided in the middle housing, the centrifugal wind wheel is installed in the volute, the cleaning liquid channel is communicated with the water inlet of the water pump through a first connecting pipe, the water outlet of the water pump and the water inlet of the spraying device are communicated through a second connecting pipe, the spraying device is positioned in the middle housing, and the water outlet of the spraying device faces the blades of the centrifugal wind wheel.

3. The range hood of claim 1, wherein the liquid storage device comprises a liquid storage bottle and a water valve assembly, the water valve assembly is arranged at the bottle mouth of the liquid storage bottle, and the water valve assembly is communicated with the liquid storage bottle and is arranged to prevent the cleaning liquid from flowing out under the working condition of no external force.

4. A range hood according to claim 3, wherein the reservoir further comprises a cap removably attached to the mouth of the reservoir and to the water valve assembly.

5. The range hood of claim 4 wherein the water valve assembly includes a water valve seat, a valve body and a water valve cover, the water valve seat being connected to the water valve cover, the valve body being disposed between the water valve seat and the water valve cover, a first end of the valve body being connected to a first end of a spring, a second end of the spring abutting against the water valve cover, the water valve seat having a water outlet extending from the finish, the valve body being configured to seal the water outlet under pressure of the spring; the valve body is compressed by the spring under the external acting force, and the valve body releases the blocking of the water outlet;

and a channel which is arranged on the water valve cover or between the water valve cover and the water valve seat and is used for communicating the cavity in the liquid storage bottle with the water outlet of the water valve seat is arranged in a state that the valve body releases the blocking of the water outlet.

6. The range hood of claim 5, wherein the mounting base is provided with a water valve rib extending into the water outlet opening the valve body to allow the cleaning fluid to flow out.

7. The range hood according to claim 5, wherein the water valve seat is provided with an axially extending connector, the connector is provided with a clamping hole, and the side wall of the water valve cover is provided with a clamping protrusion matched with the clamping hole.

8. The range hood of claim 5, wherein the reservoir further comprises a vent pipe to ensure smooth water delivery during water delivery from the reservoir; the breather pipe is positioned in the liquid storage bottle and is connected to the water valve cover; the water valve cover is provided with a first vent hole communicated with the vent pipe;

the water valve seat is provided with a second ventilation hole corresponding to the first ventilation hole;

the bottle cap is provided with a third vent hole corresponding to the second vent hole.

9. The range hood of claim 2, wherein the mounting base is disposed outside the middle housing and the water pump is disposed at a rear interior assembly position of the middle housing;

the side wall of the middle shell is provided with an assembly hole, and the second connecting pipe penetrates through the assembly hole and extends to the inner part of the middle shell to be connected with the water inlet of the spraying device.

10. The range hood of claim 1 wherein the spray assembly includes a spray head having a spray opening directed toward the centrifugal rotor.