A range hood

Abstract

The present invention provides an oil fume extractor, which includes an impeller, and further includes: a volute, on the volute shroud, there are provided a plurality of openings that project onto the impeller; a cleaning brush, which includes a plurality of cleaning parts and a receiving plate, the cleaning parts are arranged corresponding to the openings and are adapted to enter the openings to contact the impeller; a driving device, which includes a power device and a bracket, the power device is fixedly connected to the outer side wall of the volute, the bracket is fixedly connected to the receiving plate, and the power device drives the receiving plate to move in a direction close to or away from the impeller. The oil fume extractor flushes the impeller through multiple cleaning parts on the cleaning brush, and can repeatedly clean the same part of the impeller for multiple times, and the oil stains are removed more cleanly. By controlling the forward and reverse rotation of the impeller, the oil fume extractor can clean both sides of the impeller, and the cleaning is more efficient. It overcomes the defect that there is residual oil stain on the impeller after self-cleaning, and improves the service life and use effect of the oil fume extractor.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and particularly to a range hood. Background Art

[0002] With the improvement of people's living standards, range hoods have become an indispensable kitchen utensil. The self-cleaning function of range hoods has become an important reference index for consumers to choose range hoods.

[0003] In the prior art, the self-cleaning of range hoods is divided into three methods: steam cleaning, thermal melting of oil stains, and immersion cleaning. In the above technologies, in order to avoid splashing, the cleaning and flushing force of steam cleaning and immersion cleaning will be limited, and the heating temperature and heating time of the thermal melting of oil stains method are limited by the surrounding cabinets or other household environments.

[0004] After the above self-cleaning methods are implemented, there will still be residual melted oil stains on the blades of the range hood. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem that there are residual oil stains on the blades of the range hood after self-cleaning in the prior art, so as to provide a range hood.

[0006] The present invention provides a range hood, including a wind wheel, and further including:

[0007] A volute, on the volute shroud, there are provided a plurality of openings projected on the wind wheel;

[0008] A cleaning brush, including a plurality of cleaning parts and a receiving plate, the cleaning parts are correspondingly arranged with the openings, and are adapted to enter the openings to contact the wind wheel;

[0009] A driving device, including a power device and a bracket, the power device is fixedly connected to the outer side wall of the volute, the bracket is fixedly connected to the receiving plate, and the power device drives the receiving plate to move in a direction close to or away from the wind wheel.

[0010] The opening includes a first cleaning hole for allowing a cleaning member to pass through and introducing a cleaning liquid.

[0011] At a position on the receiving plate corresponding to the first cleaning hole, a second cleaning hole is provided, and the cleaning member passes through the second cleaning hole and the first cleaning hole.

[0012] The cleaning member is a spray pipe, and the spray pipe is arranged on the second cleaning hole of the receiving plate.

[0013] The top end of the spray pipe is located below the top end of the cleaning part.

[0014] Spray holes are provided on the side wall of one end of the spray pipe that extends into the wind wheel.

[0015] The bracket includes at least two support rods, which are respectively arranged at both ends of the edge of the receiving plate and are perpendicular to the receiving plate, and the power device acts on the support rods.

[0016] Two of the support rods are respectively arranged at one end of the receiving plate, and a connecting rod is arranged between two adjacent support rods, and the power device acts on the connecting rod.

[0017] The power device is an electric push rod, and the end of the screw rod of the electric push rod is fixedly connected to the middle of the connecting rod.

[0018] The stroke of the screw rod is the same as the length of the cleaning part.

[0019] The technical solution of the present invention has the following advantages:

[0020] 1. The range hood provided by the present invention includes a wind wheel, and further includes: a volute, and a plurality of openings projected on the wind wheel are provided on the volute shroud; a cleaning brush, which includes a plurality of cleaning parts and a receiving plate, the cleaning parts are correspondingly arranged with the openings, and are adapted to enter the openings to contact the wind wheel; a driving device, which includes a power device and a bracket, the power device is fixedly connected to the outer side wall of the volute, the bracket is fixedly connected to the receiving plate, and the power device drives the receiving plate to move in a direction close to or away from the wind wheel. After the self-cleaning process, the power device in the driving device drives the bracket, driving the receiving plate fixedly connected to the bracket to move in a direction close to the wind wheel. The cleaning parts on the receiving plate enter from the openings on the volute shroud. Since the openings are projected on the wind wheel, the cleaning parts will contact the wind wheel after entering. When the wind wheel moves, the cleaning parts will scour the wind wheel to remove the remaining oil stains on the wind wheel. The range hood scours the wind wheel through multiple cleaning parts on the cleaning brush, and can repeatedly clean the same part of the wind wheel many times, and the oil stains are removed more cleanly; the cleaning brush can be used many times after repeated cleaning, and has a longer service life; by controlling the forward and reverse rotation of the wind wheel, the range hood can clean both sides of the wind wheel, and the cleaning is more efficient. The above-mentioned range hood overcomes the defect that there are still remaining oil stains on the blades of the range hood after self-cleaning in the prior art, and improves the service life and use effect of the range hood.

[0021] 2. For the range hood provided by the present invention, the opening includes a first cleaning hole, and the first cleaning hole is used for a cleaning member to pass through and introduce a cleaning liquid. The cleaning member passes through the first cleaning hole into the inside of the volute, and during the process that the cleaning part enters the opening to clean the wind wheel, the cleaning liquid is introduced to assist in cleaning. At the same time, other cleaning media such as water can also be introduced into the cleaning member to rinse the wind wheel after being cleaned by the cleaning part. The setting of the first cleaning hole and the cleaning member improves the washing effect of the cleaning part extending into the volute, and makes the cleaning cleaner.

[0022] 3. In the range hood provided by the present invention, the top of the nozzle is located below the top of the cleaning part. On the one hand, the top of the cleaning part can penetrate into the inside of the impeller, but at the same time the nozzle will not interfere with the impeller. On the other hand, the cleaning liquid can be sprayed on the cleaning part. The brushing of multiple cleaning parts makes the cleaning liquid fully contact with the air and the impeller to generate foam, increase the contact area and reaction time between the cleaning liquid and the impeller, fully dissolve and brush away the oil stains, and improve the effect of removing oil stains. At the same time, after the clean water is introduced, the cleaning part can be cleaned, and the clean cleaning part with clean water can fully clean the impeller, wash away the mixture of cleaning liquid and oil stains, and improve the cleaning effect of the range hood.

[0023] 4. The range hood provided by the present invention, the bracket includes: at least two support rods, which are respectively arranged at the two ends of the edge of the receiving plate and are arranged perpendicular to the receiving plate, and the power device acts on the support rods. The receiving plate is used to carry the cleaning part and the nozzle on the one hand, and to limit the extension of the cleaning part into the volute on the other hand, so that the cleaning part can fully clean the wind wheel and the nozzle will not interfere with the wind wheel; the support rods on the bracket are arranged at the two ends of the edge of the receiving plate and are perpendicular to the receiving plate. When the power device acts on the support rods, it can apply force on both sides of the receiving plate at the same time, so that the movement of the receiving plate is more stable, and the stability of the device is increased.

[0024] 5. The range hood provided by the present invention has an electric push rod as the power device, and the end of the screw of the electric push rod is fixedly connected to the middle of the connecting rod. Such an arrangement makes the torque of the electric push rod acting on both sides of the connecting rod equal, so that the support rod on the connecting rod is evenly stressed, and prevents stress concentration at the connection position between the connecting rod and the support rod, thereby preventing the connection rod from breaking or detaching.

[0025] 6. The length of the screw rod of the range hood provided by the present invention is consistent with the length of the cleaning part. Such a setting enables the end of the cleaning part to be located at the opening but not separated from the opening when the electric push rod is retracted to the limit position of the stroke. On the one hand, such a setting prevents the cleaning part from being separated from the volute, preventing the cleaning part, which is a flexible part, from being unable to re-enter the volute due to displacement or being stuck at the opening due to bending during the entry process. On the other hand, when the cleaning part is located at the limit position of the opening, it does not protrude from the volute enclosure, and will not affect the normal operation of the range hood. There is no blocking effect on the wind speed and air volume in the volute. At the same time, there is a small area of ​​small hole gap between the cleaning part and the opening, which plays a role in porous absorption of sound energy and reduces the noise of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic cross-sectional view of the range hood in the state where the cleaning part is far from the impeller in the embodiment of the present invention;

[0028] Figure 2 It is a three-dimensional schematic view of the range hood in the state where the cleaning part is close to the impeller in the embodiment of the present invention;

[0029] Figure 3 is Figure 1 An enlarged schematic view of part A of the range hood shown;

[0030] Figure 4 is Figure 2 An enlarged schematic view of part B of the range hood shown.

[0031] Explanation of reference numerals:

[0032] 1 - volute; 2 - impeller; 3 - cleaning brush; 4 - driving device; 5 - nozzle; 11 - shroud; 12 - opening; 121 - first cleaning hole; 13 - side wall; 31 - cleaning part; 32 - receiving plate; 321 - second cleaning hole; 41 - power device; 42 - bracket; 421 - support rod; 422 - connecting rod. Specific embodiments

[0033] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] Such as Figure 1 - Figure 4 The present invention provides a range hood, which includes a wind wheel 2, and further includes: a volute 1, on the peripheral wall 11 of the volute 1, there are provided a plurality of openings 12 projected on the wind wheel 2; a cleaning brush 3, which includes a plurality of cleaning parts 31 and a receiving plate 32, the cleaning parts 31 are correspondingly arranged with the openings 12 and are adapted to enter the openings 12 to contact the wind wheel 2; a driving device 4, which includes a power device 41 and a bracket 42, the power device 41 is fixedly connected to the outer side wall 13 of the volute 1, the bracket 42 is fixedly connected to the receiving plate 32, and the power device 41 drives the receiving plate 32 to move in a direction close to or away from the wind wheel 2.

[0038] After the self-cleaning process, the power device 41 in the driving device 4 drives the bracket 42, driving the receiving plate 32 fixedly connected to the bracket 42 to move in a direction close to the wind wheel 2. The cleaning parts 31 on the receiving plate 32 enter from the openings 12 on the peripheral wall 11 of the volute 1. Since the openings 12 are projected on the wind wheel 2, after the cleaning parts 31 enter, they will contact the wind wheel 2. When the wind wheel 2 is moving, the cleaning parts 31 will scour the wind wheel 2 to remove the residual oil stains on the wind wheel 2. The range hood scours the wind wheel 2 through the multiple cleaning parts 31 on the cleaning brush 3, and can repeatedly clean the same part of the wind wheel 2 for multiple times, making the removal of oil stains cleaner; the cleaning brush 3 can be used multiple times after repeated cleaning, with a longer service life; by controlling the forward and reverse rotation of the wind wheel 2, the range hood can clean both sides of the wind wheel 2, making the cleaning more efficient. In addition, in the case of non-self-cleaning, the range hood can still be cleaned through the cleaning brush 3. The above-mentioned range hood overcomes the defect that there are still residual oil stains on the blades of the range hood after self-cleaning in the prior art, and improves the service life and use effect of the range hood. The range hood can also start to clean the wind wheel 2 under non-self-cleaning conditions.

[0039] The opening 12 includes a first cleaning hole 121, and the first cleaning hole 121 is used for a cleaning member to pass through and introduce a cleaning liquid.

[0040] The cleaning part enters the volute 1 through the first cleaning hole 121. During the process that the cleaning part enters the opening 12 to clean the impeller 2 at the cleaning part 31, cleaning liquid is introduced to assist in cleaning. At the same time, other cleaning media such as water can also be introduced into the cleaning part. After the impeller 2 is cleaned by the cleaning part 31, it is rinsed. The setting of the first cleaning hole 121 and the cleaning part improves the washing effect of the cleaning part 31 extending into the volute 1, making the cleaning cleaner.

[0041] A second cleaning hole 321 is provided at a position on the receiving plate 32 corresponding to the first cleaning hole 121, and the cleaning part passes through the second cleaning hole 321 and the first cleaning hole 121. The setting of the second cleaning hole 321 allows the cleaning part to enter the volute 1 through the receiving plate 32, enabling the cleaning part to enter and exit the volute 1 along with the movement of the receiving plate 32. Before and after the cleaning is completed, it can exit the volute 1 without increasing the wind resistance of the range hood and ensuring the working efficiency of the range hood.

[0042] The cleaning part is a spray pipe 5, and the spray pipe 5 is arranged on the second cleaning hole 321 of the receiving plate 32.

[0043] The top end of the spray pipe 5 is located below the top end of the cleaning part 31. Such a setting makes the top end of the cleaning part 31 can penetrate into the impeller 2 on the one hand, but at the same time the spray pipe 5 will not interfere with the impeller. On the other hand, the cleaning liquid can be sprayed on the cleaning part. The brushing of multiple cleaning parts makes the cleaning liquid fully contact with the air and the impeller 2 to generate foam, increasing the contact area and reaction time between the cleaning liquid and the impeller 2, fully dissolving and brushing off the oil stains, improving the effect of removing oil stains. At the same time, after introducing clean water, the cleaning part can be cleaned, and the clean and clean-water-sticking cleaning part can fully clean the impeller, washing away the mixture of the cleaning liquid and the oil stains, improving the cleaning effect of the range hood.

[0044] As a variable implementation mode, the position where the spray pipe 5 extends into the volute 1 is the gap between the impeller and the side plate of the volute 1, and the spray pipe 5 will not interfere with the impeller.

[0045] Spray holes are provided on the side wall 13 at one end of the cleaning part extending into the impeller 2. As a variable implementation mode, the spray holes can be only provided on the side of the cleaning part close to the impeller 2 or the spray holes are evenly distributed axially on the cleaning part.

[0046] The bracket 42 includes four support rods 421, which are respectively arranged at both ends of the edge of the receiving plate 32 and are perpendicular to the receiving plate 32, and the power device 41 acts on the support rods 421. As a variable implementation mode, the bracket 42 can only be provided with two support rods 421, which are respectively arranged at both ends of the edge of the receiving plate 32 or both are arranged at one end of the edge.

[0047] The receiving plate 32 is used to carry the cleaning part and the spray pipe 5 on the one hand, and on the other hand, it limits the cleaning part from extending into the volute 1. This not only enables the cleaning part to fully clean the impeller 2, but also ensures that the spray pipe 5 does not interfere with the impeller 2. The support rods 421 on the bracket 42 are arranged at both ends of the edge of the receiving plate 32 and are perpendicular to the receiving plate 32. When the power device 41 acts on the support rods 421, forces can be applied simultaneously on both sides of the receiving plate 32, making the movement of the receiving plate 32 more stable and increasing the stability of the device.

[0048] Two support rods 421 are respectively arranged at one end of the receiving plate 32, and a connecting rod 422 is arranged between two adjacent support rods 421. The power device 41 acts on the connecting rod 422. The connecting rod 422 connects the support rods 421 and the power device 41, enabling the acting force of the power device 41 to act on the receiving plate 32 connected to the support rods 421.

[0049] In this embodiment, the power device 41 is an electric push rod, and the end of the screw rod of the electric push rod is fixedly connected to the middle of the connecting rod 422. This setting makes the moments of the electric push rod acting on both sides of the connecting rod 422 equal, making the support rods 421 on the connecting rod 422 receive uniform forces, and preventing phenomena such as stress concentration at the connection position between the connecting rod 422 and the support rods 421, resulting in fracture or detachment. As a variable implementation method, the end of the screw rod of the electric push rod is arranged close to one end of the connecting rod 422, providing a space for accommodating the main body of the electric push rod.

[0050] As other variable implementation methods, the power device 41 can be a cylinder or a hydraulic cylinder.

[0051] The stroke of the screw rod is the same as the length of the cleaning part 31. This setting makes the end of the cleaning part 31 located at the opening 12 when the electric push rod is at the limit position of the retracting stroke, but it does not detach from the opening 12. This setting, on the one hand, prevents the cleaning part 31 from detaching from the volute 1, preventing the cleaning part 31, which is a flexible part, from being displaced and unable to enter the volute 1 again or being bent during the entry process and getting stuck at the opening 12. On the other hand, when the cleaning part 31 is at the limit position at the opening 12, it does not protrude from the peripheral plate 11 of the volute 1, does not affect the normal operation of the range hood, does not block the wind speed and air volume in the volute 1, and at the same time, there is a small area of small hole gaps between the cleaning part 31 and the opening 12, which plays a role in absorbing sound energy through multiple holes and reducing the noise of the range hood. In this embodiment, the cleaning part 31 is a flexible brush bundle composed of multiple bristles and is perpendicularly arranged to the receiving plate 32.

[0052] As a variable implementation method, the stroke of the screw rod can be less than the length of the cleaning part 31.

[0053] Obviously, the above embodiments are merely examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. An oil fume suction machine, comprising an air impeller (2), characterized in that, Also includes: A volute (1), wherein a plurality of openings (12) projecting onto the wind wheel (2) are provided on a surrounding plate (11) of the volute (1); A cleaning brush (3) comprising a plurality of cleaning portions (31) and a receiving plate (32), wherein the cleaning portions (31) are arranged corresponding to the opening (12) and are suitable for entering the opening (12) and contacting the wind wheel (2); The driving device (4) comprises a power device (41) and a bracket (42), wherein the power device (41) is fixedly connected to the outer side wall (13) of the volute (1), and the bracket (42) is fixedly connected to the receiving plate (32), and the power device (41) drives the receiving plate (32) to move in a direction close to or away from the wind wheel (2); The power device (41) is an electric push rod, the stroke of the screw of the electric push rod is consistent with the length of the cleaning portion (31), so that when the electric push rod is retracted to the limit of its stroke, the end of the cleaning portion (31) is located at the opening (12) but does not separate from the opening (12), and a small-area small hole gap exists between the cleaning portion (31) and the opening (12).

2. The range hood according to claim 1, characterized in that, A first cleaning hole (121) is provided on the enclosure (11) of the volute (1), wherein the first cleaning hole (121) is used for a cleaning piece to pass through and for a cleaning liquid to flow into.

3. The range hood according to claim 2, wherein A second cleaning hole (321) is provided at a position on the receiving plate (32) corresponding to the first cleaning hole (121), and the cleaning piece passes through the second cleaning hole (321).

4. The range hood according to claim 3, characterized in that, The cleaning component is a nozzle (5), and the nozzle (5) is arranged on the second cleaning hole (321) of the receiving plate (32).

5. The range hood according to claim 4, wherein, The top end of the nozzle (5) is located below the top end of the cleaning portion (31).

6. The range hood according to claim 5, wherein, A spray hole is provided on the side wall (13) of one end of the spray pipe (5) that penetrates into the wind wheel (2).

7. The range hood according to any one of claims 1-6, characterized in that, The support (42) comprises: At least two support rods (421) are respectively arranged at two ends of the edge of the receiving plate (32) and are arranged perpendicular to the receiving plate (32); the power device (41) acts on the support rods (421).

8. The range hood according to claim 7, characterized in that, Two support rods (421) are respectively arranged at one end of the receiving plate (32), a connecting rod (422) is arranged between the two supporting rods (421), and the power device (41) acts on the connecting rod (422).

9. The range hood according to claim 8, wherein, The end of the screw rod of the electric push rod is fixedly connected to the middle part of the connecting rod (422).

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