Cleaning mechanism and range hood comprising same

Abstract

The utility model provides a cleaning mechanism and a range hood comprising the same, the cleaning mechanism is arranged on a bottom plate of an exhaust fume collecting hood of the range hood, and the cleaning mechanism comprises a brush body used for scraping the surface, facing the inside of the range hood, of the bottom plate; the driving part is used for driving the brush body to do reciprocating motion in the length or width direction of the bottom plate, when the brush body moves forwards, an included angle of 0-30 degrees is formed between the side, facing the bottom plate, of the brush body and the direction perpendicular to the bottom plate, and when the brush body moves backwards, the included angle of 0-30 degrees is formed between the side, facing the bottom plate, of the brush body and the direction perpendicular to the bottom plate. The side, facing the bottom plate, of the brush body and the direction perpendicular to the bottom plate form an included angle of 0-60 degrees. According to the cleaning mechanism, linear contact is formed when the brush body moves forwards, and surface contact is formed when the brush body moves backwards, so that cleanness of the bottom plate is guaranteed, and the cleaning effect of the cleaning mechanism is improved.

Description

Technical Field

[0001] The utility model particularly relates to a cleaning mechanism and a range hood including the same. Background Art

[0002] In order to better capture kitchen fumes, a range hood is usually provided with a smoke collecting hood. However, there is a problem when setting up the smoke collecting hood: that is, the bottom plate of the smoke collecting hood has a wide area and a significant length, so that kitchen fumes can quickly enter the smoke collecting hood through the air inlet during cooking. However, the large volume of the smoke collecting hood causes the speed and temperature of the fumes to drop rapidly after entering, resulting in the fumes being dispersed and adhered to the inner surface of the bottom plate of the smoke collecting hood. Although these oil droplets are small, under the combined action of their own gravity and the viscous force with the surface of the smoke collecting hood, they firmly adhere to the inner surface of the bottom plate. Although the bottom plates of some range hoods adopt an inclined angle design in the hope that the oil droplets can naturally slide into the oil collecting box, the actual effect often requires multiple accumulations or several days of waiting before the oil droplets can converge into a stream and flow into the oil collecting box.

[0003] And in winter when the temperature is relatively low and the interval between two cookings is relatively long, the oil droplets on the inner surface of the smoke collecting hood are more likely to cool. Once cooled, the density of the oil droplets decreases and the volume increases, thus forming multiple local convex points on the inner surface of the smoke collecting hood, resulting in the inner surface of the bottom plate becoming rough, and further increasing the viscous force of the fumes adhering. Over time, more and more oil droplets accumulate at these convex point positions, and the convex points gradually increase, having a serious negative impact on the fume extraction effect. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the defect that the bottom plate of the smoke collecting hood of the prior art is prone to accumulate oil stains, and provide a cleaning mechanism and a range hood including the same.

[0005] The utility model solves the above technical problem through the following technical solutions:

[0006] A cleaning mechanism is arranged on the bottom plate of the smoke collecting hood of the range hood. The cleaning mechanism includes:

[0007] A brush body for scraping the surface of the bottom plate facing the inside of the range hood;

[0008] A driving part for driving the brush body to reciprocate along the length or width direction of the bottom plate. When the brush body moves forward, the side of the brush body facing the bottom plate forms an angle of 0 - 30° with the direction perpendicular to the bottom plate. When the brush body moves backward, the side of the brush body facing the bottom plate forms an angle of 0 - 60° with the direction perpendicular to the bottom plate.

[0009] In this solution, when the brush body moves forward, it forms an angle of 0 - 30° with the direction perpendicular to the bottom plate. As a result, the brush body forms a line contact with the surface of the bottom plate. Compared with the surface contact method, the force of the line contact is greater, which can effectively remove the oil fume bumps accumulated on the surface of the bottom plate and collect the dispersed oil fume into the oil cup of the range hood. Additionally, when the brush body moves backward, it forms an angle of 0 - 60° with the direction perpendicular to the bottom plate. The contact between the brush body and the surface of the bottom plate is no longer a line contact but a multi-point surface contact between the brush body and the surface of the bottom plate. This causes the unit thrust and unit pressure received by the brush body to decrease, thus preventing the oil droplets that have been gathered when the brush body moves forward from being dispersed again to various positions on the bottom plate due to excessive thrust on the oil droplets during the backward movement, thereby ensuring the cleanliness of the bottom plate and improving the cleaning effect of the cleaning mechanism.

[0010] Preferably, the brush body includes a push rod and a brush strip. A plurality of mounting holes are provided on the push rod, and a plurality of protrusions are provided on the brush strip. The brush strip is connected to the push rod through the protrusions.

[0011] In this solution, through the above settings, the detachable connection between the push rod and the brush strip is achieved.

[0012] Preferably, a limiting portion is convexly provided at one end of the protrusion away from the brush strip in a direction parallel to the mounting hole, and the size of the limiting portion is larger than the size of the mounting hole.

[0013] In this solution, through the above settings, the brush strip is not easily separated from the push rod, improving the reliability of the detachable connection.

[0014] Preferably, the brush strip is made of a flexible material that deforms following the movement of the push rod.

[0015] In this solution, through the above settings, the change in the angle between the brush body and the bottom plate during forward and backward movement is achieved, improving the cleaning ability of the cleaning mechanism.

[0016] Preferably, the brush strip is any one of silicone, rubber, and polyurethane.

[0017] In this solution, through the above settings, the brush strip has the ability to deform, and the material is easily obtained and has a low cost.

[0018] Preferably, the brush strip is made of a metal material.

[0019] In this solution, through the above settings, the brush strip has the ability to deform and has the ability to clean oil droplets in an environment with a relatively low temperature.

[0020] Preferably, the driving part includes a driving motor and a screw rod. The screw rod is rotationally connected to the driving shaft of the driving motor. A threaded hole is formed on the push rod. The push rod is screwed to the screw rod and the screw rod is arranged perpendicular to the push rod.

[0021] In this solution, through the above settings, the brush body is driven to make a reciprocating motion.

[0022] Preferably, the driving part further includes a bracket. The bracket is arranged at the end of the screw rod away from the driving motor. The bracket is provided with a through hole corresponding to the screw rod. The end of the screw rod is rotationally connected in the through hole.

[0023] In this solution, through the above settings, it is ensured that when the driving motor rotates, the screw rod can rotate synchronously and stably.

[0024] Preferably, when the driving motor drives the push rod to move to the limit position in the forward or reverse direction, the current in the driving motor increases and the driving shaft drives the screw rod to rotate in the reverse direction.

[0025] In this solution, through the above settings, when the brush body makes a reciprocating motion, there is no need to manually switch the moving direction of the brush body, improving the automation degree of the cleaning mechanism.

[0026] An oil fume machine, the oil fume machine includes the cleaning mechanism as described above. The oil fume machine further includes an oil cup for receiving the oil stains scraped from the cleaning mechanism.

[0027] In this solution, the oil fume machine includes the above cleaning mechanism to effectively clean the bottom plate where oil droplets are likely to accumulate. At the same time, an oil cup is provided to collect the oil droplets scraped by the cleaning mechanism, preventing the oil droplets from dripping from the smoke collecting hood to the stove, improving the user experience and the cleaning difficulty.

[0028] The positive and progressive effects of the present utility model are as follows: when the brush body moves forward, the present utility model forms an angle of 0-30° with the direction perpendicular to the bottom plate, so that the brush body forms a line contact with the surface of the bottom plate. Compared with the surface contact method, the acting force of the line contact is greater, which can effectively remove the oil fume bumps accumulated on the surface of the bottom plate and collect the dispersed oil fume into the oil cup of the oil fume machine. In addition, when the brush body moves backward, an angle of 0-60° is formed with the direction perpendicular to the bottom plate. The contact between the brush body and the surface of the bottom plate is no longer a line contact method, but a multi-point surface contact between the brush body and the surface of the bottom plate, resulting in a decrease in the unit thrust and unit pressure received by the brush body, thus avoiding the re-dispersion of the oil droplets that have been gathered when the brush body moves forward to various positions on the bottom plate due to the excessive thrust on the oil droplets during the reverse movement, thereby ensuring the cleaning of the bottom plate and improving the cleaning effect of the cleaning mechanism. Description of the Drawings

[0029] Figure 1 Stereogram of the range hood according to a preferred embodiment of the present utility model.

[0030] Figure 2 Schematic diagram of the positional relationship between the cleaning mechanism and the bottom plate according to a preferred embodiment of the present utility model.

[0031] Figure 3 Schematic diagram of the state when the brush body moves forward according to a preferred embodiment of the present utility model.

[0032] Figure 4 is Figure 3 Partial enlarged view of A.

[0033] Figure 5 Schematic diagram of the state of the included angle formed by the brush body moving forward and the direction perpendicular to the bottom plate according to a preferred embodiment of the present utility model.

[0034] Figure 6 Schematic diagram of the state when the brush body moves backward according to a preferred embodiment of the present utility model.

[0035] Figure 7 is Figure 6 Partial enlarged view of B.

[0036] Figure 8 Schematic diagram of the state of the included angle formed by the brush body moving backward and the direction perpendicular to the bottom plate according to a preferred embodiment of the present utility model.

[0037] Description of reference numerals:

[0038] Range hood 100

[0039] Smoke collecting hood 10

[0040] Oil cup 20

[0041] Bottom plate 11

[0042] Brush body 1

[0043] Push rod 12

[0044] Mounting hole 121

[0045] Brush strip 13

[0046] Protrusion 131

[0047] Drive part 2

[0048] Drive motor 21

[0049] Screw 22

[0050] Bracket 23

[0051] Limit part 3 Detailed implementation manners

[0052] The following is a preferred embodiment, and the present utility model will be more clearly and completely described in conjunction with the accompanying drawings.

[0053] This embodiment provides a cleaning mechanism, and the specific structure is as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 shown. The cleaning mechanism is arranged on the bottom plate 11 of the smoke collecting hood 10 of the range hood 100. The cleaning mechanism includes:

[0054] A brush body 1, and the brush body 1 is used to scrape the surface of the bottom plate 11 facing the inside of the range hood 100.

[0055] A driving part 2, and the driving part 2 is used to drive the brush body 1 to reciprocate along the length or width direction of the bottom plate 11. When the brush body 1 moves forward, the side of the brush body 1 facing the bottom plate 11 forms an angle of 0-30° with the direction perpendicular to the bottom plate 11. When the brush body 1 moves backward, the side of the brush body 1 facing the bottom plate 11 forms an angle of 0-60° with the direction perpendicular to the bottom plate 11.

[0056] Specifically, both the brush body 1 and the driving part 2 are arranged above the bottom plate 11. The bottom plate 11 can be arranged horizontally or inclined to the horizontal direction, and the brush body 1 can reciprocate along the length or width direction of the bottom plate 11 to scrape off the oil droplets on the bottom plate 11. In this embodiment, the case where the bottom plate 11 is inclined to the horizontal direction and the brush body 1 moves along the length direction of the bottom plate 11 is taken as an example for description, but it is not limited thereto. When the driving part 2 drives the brush body 1 to move forward, the side of the brush body 1 facing the bottom plate 11 deforms under the action of force. In the deformed state, compared with the direction perpendicular to the bottom plate 11, the side part of the brush body 1 forms an angle α with the direction perpendicular to the bottom plate 11, and α is an angle of 0-30°, that is, the brush body 1 deviates from the forward movement direction and forms an angle of 0-30° with the direction perpendicular to the bottom plate 11. Furthermore, a line contact is formed between the brush body 1 and the surface of the bottom plate 11. Compared with the surface contact method, the contact area of the line contact is small and the scraping force on the surface of the bottom plate 11 is greater, which can effectively remove the oil fume bumps accumulated on the surface of the bottom plate 11 and collect the dispersed oil fume into the oil cup 20 of the range hood 100.

[0057] In addition, it can be understood that when the brush body 1 is moved in the reverse direction, the side of the brush body 1 facing the bottom plate 11 is deformed by the force, and in the deformed state, compared with the direction perpendicular to the bottom plate 11, the side of the brush body 1 forms an angle β with the direction perpendicular to the bottom plate 11, and β is an angle of 0-60°, that is, the brush body 1 deviates from the reverse movement direction and forms an angle of 0-60° with the direction perpendicular to the bottom plate 11. At this time, the brush body 1 and the surface of the bottom plate 11 are no longer in a line contact, but in a multi-point surface contact between the brush body 1 and the surface of the bottom plate 11. The surface contact results in a reduction in the unit thrust and unit pressure received by the brush body 1, thereby avoiding the oil droplets that have been gathered when the brush body 1 is moved forward from being dispersed again to various positions of the bottom plate 11 due to the excessive thrust on the oil droplets caused by the reverse movement, thereby ensuring the cleanliness of the bottom plate 11 and improving the cleaning effect of the cleaning mechanism.

[0058] In this embodiment, the brush body 1 includes a push rod 12 and a brush strip 13 . The push rod 12 is provided with a plurality of mounting holes 121 . The brush strip 13 is provided with a plurality of protrusions 131 . The brush strip 13 is connected to the push rod 12 via the protrusions 131 .

[0059] Specifically, the push rod 12 is a rectangular rod, and a plurality of mounting holes 121 are provided on the side of the push rod 12 facing the base plate 11. The mounting holes 121 are circular holes and are arranged at intervals on the push rod 12. The brush strip 13 is provided with a plurality of protrusions 131 along the direction away from the base plate 11. The protrusions 131 are cylindrical structures and are integrally formed with the brush strip 13. It can be understood that the setting direction of the protrusions 131 and the mounting holes 121 is perpendicular to the movement direction of the brush strip 13, so that the push rod 12 and the brush strip 13 can be detachably connected through the cooperation between the protrusions 131 and the mounting holes 121 and bear the force when the brush strip moves.

[0060] Furthermore, a limiting portion 3 is provided on one end of the protrusion 131 away from the brush strip 13 in a direction parallel to the mounting hole 121 , and a size of the limiting portion 3 is larger than a size of the mounting hole 121 .

[0061] Specifically, the limiting portion 3 is arranged at the end of the protrusion 131 away from the brush strip 13. The limiting portion 3 is a conical structure, and the limiting portion 3 and the protrusion 131 are integrally formed. The size of the limiting portion 3 along the plane direction parallel to the mounting hole 121 is larger than the size of the mounting hole 121. When the brush strip 13 is installed to the push rod 12, the limiting portion 3 is pushed into the mounting hole 121 by extrusion, so that the brush strip 13 is limited after being installed to the push rod 12 by the limiting portion 3, so that the brush strip 13 is not easily separated from the push rod 12, thereby improving the reliability of the detachable connection.

[0062] In this embodiment, the brush strip 13 is made of a flexible material that deforms as the push rod 12 moves. It can be understood that the brush strip 13, the protrusion 131, and the limiting portion 3 are made of the same flexible material, which facilitates the installation and disassembly of the brush strip 13. In addition, the flexible material can deform under the frictional force of the surface of the bottom plate 11 when the brush body 1 moves, and form an angle with the direction perpendicular to the bottom plate 11, that is, the angle formed between the brush body 1 and the bottom plate 11 changes when the brush body 1 moves forward and backward, improving the cleaning ability of the cleaning mechanism.

[0063] In this embodiment, the brush strip 13 is any one of silicone, rubber, or polyurethane. So that the brush strip 13 has the ability to deform. It can be understood that the above materials are easy to obtain and have low costs.

[0064] In other embodiments, the brush strip 13 can also be made of a metal material. When the thickness of the metal material is relatively low, it has a certain ability to deform and can be reset after deformation. By making the brush strip 13 of a metal material, on the basis that the brush strip 13 has the ability to deform, it also has a certain hardness. Furthermore, in an environment with a relatively low temperature, after the oil droplets cool on the bottom plate 11, the oil droplets can also be scraped off by the brush strip 13 made of the metal material, ensuring the cleaning ability for oil droplets in an environment with a relatively low temperature.

[0065] In this embodiment, the driving portion 2 includes a driving motor 21 and a screw rod 22. The screw rod 22 is rotatably connected to the driving shaft (not shown in the figure) of the driving motor 21. A threaded hole is provided on the push rod 12, and the push rod 12 is screwed to the screw rod 22 and the screw rod 22 is arranged in a direction perpendicular to the push rod 12.

[0066] Specifically, a threaded hole is provided in the middle area of the push rod 12. The outer surface of the screw rod 22 has an external thread for cooperating with the threaded hole. The push rod 12 is perpendicular to the screw rod 22. When the screw rod 22 rotates by driving the driving shaft, the push rod 12 moves correspondingly along the direction of the screw rod 22 while the position of the screw rod 22 remains unchanged. In this embodiment, the screw rod 22 is arranged along the length direction of the bottom plate 11. It can be understood that the driving motor 21 is a servo motor in the prior art, which is the prior art and will not be elaborated here.

[0067] In this embodiment, the driving portion 2 further includes a bracket 23. The bracket 23 is arranged at the end of the screw rod 22 away from the driving motor 21. The bracket 23 is provided with a through hole corresponding to the screw rod 22, and the end of the screw rod 22 is rotatably connected in the through hole.

[0068] Specifically, the driving motor 21 is disposed on the bottom plate 11 and the driving motor 21 has a base. Through the base, the screw rod 22 is disposed above the bottom plate 11. Correspondingly, a bracket 23 is further disposed at one end of the screw rod 22 away from the driving motor 21. The bracket 23 is at the same height as the base, so that the screw rod 22 is disposed parallel to the upper part of the bottom plate 11. The screw rod 22 and the bracket 23 are rotationally connected through a through hole, so as to ensure that the position of the screw rod 22 above the bottom plate 11 remains unchanged when the screw rod 22 rotates, and ensure that when the driving motor 21 rotates, the screw rod 22 can rotate synchronously and stably.

[0069] In other embodiments, a rotating shaft may also be disposed at the end of the bracket 23 corresponding to the screw rod 22, so as to ensure that the screw rod 22 can rotate synchronously and stably.

[0070] In this embodiment, when the driving motor 21 drives the push rod 12 to move to the limit position in the forward or reverse direction, the current in the driving motor 21 increases and the driving shaft drives the screw rod 22 to rotate in the reverse direction.

[0071] Specifically, when the driving motor 21 drives the screw rod 22 to rotate clockwise, the push rod 12 moves forward toward the bracket 23 along the positive direction under the guidance of the screw rod 22. When the push rod 12 moves to the end of the screw rod 22 and cannot move forward any further, the driving motor 21 will sense an increase in current and immediately stop rotating forward, and then start rotating counterclockwise. This reverse rotation process will drive the push rod 12 to move in the reverse direction, thereby forming a periodic reciprocating motion. It can be understood that the driving motor 21 sensing current is a prior art, and this embodiment does not make any improvement on it, so no more details will be described here. By the driving motor 21 sensing current to realize the forward and reverse rotation of the screw rod 22, so that when the brush body 1 makes a reciprocating motion, there is no need to manually switch the moving direction of the brush body 1, thereby improving the automation degree of the cleaning mechanism.

[0072] This embodiment also provides an oil fume machine 100. The oil fume machine 100 includes the above cleaning mechanism. The oil fume machine 100 further includes an oil cup 20 for receiving the oil stains scraped by the self-cleaning mechanism.

[0073] Specifically, the oil fume machine 100 includes the above cleaning mechanism to effectively clean the bottom plate 11 where oil droplets are likely to accumulate. At the same time, an oil cup 20 is provided to collect the oil droplets scraped by the cleaning mechanism. The oil cup 20 is disposed corresponding to the inclined bottom plate 11 and is located below the bottom plate 11 in the height direction of the oil fume machine 100, so as to scrape the oil droplets through the cleaning mechanism and guide the scraped oil droplets through the inclined bottom plate 11, and then effectively collect the oil droplets through the oil cup 20, avoiding the oil droplets from dripping from the smoke collecting hood 10 onto the cooking stove, and improving the user experience and cleaning difficulty.

[0074] Although the specific embodiments of the present utility model have been described above, those skilled in the art should understand that this is only an example, and the protection scope of the present utility model is defined by the appended claims. Without departing from the principle and essence of the present utility model, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present utility model.

Claims

1. A cleaning mechanism, the cleaning mechanism being arranged on the bottom plate of a range hood, characterized in that: The cleaning mechanism comprises: A brush body, the brush body being used to scrape the surface of the bottom plate facing the interior of the range hood; A driving unit, wherein the driving unit is used to drive the brush body to reciprocate along the length or width direction of the base plate. When the brush body moves in the forward direction, the side of the brush body facing the base plate forms an angle of 0-30° with the direction perpendicular to the base plate. When the brush body moves in the reverse direction, the side of the brush body facing the base plate forms an angle of 0-60° with the direction perpendicular to the base plate.

2. The cleaning mechanism according to claim 1, characterized in that: The brush body comprises a push rod and a brush strip, the push rod is provided with a plurality of mounting holes, the brush strip is provided with a plurality of protrusions, and the brush strip is connected to the push rod through the protrusions.

3. The cleaning mechanism according to claim 2, characterized in that: A limiting portion is provided on one end of the protrusion away from the brush strip in a direction parallel to the mounting hole, and a size of the limiting portion is larger than a size of the mounting hole.

4. The cleaning mechanism according to claim 3, characterized in that: The brush strip is made of a flexible material that deforms along with the movement of the push rod.

5. The cleaning mechanism according to claim 4, characterized in that: The brush strip is any one of silicone, rubber and polyurethane.

6. The cleaning mechanism according to claim 4, characterized in that: The brush strip is made of metal.

7. The cleaning mechanism according to claim 2, characterized in that: The driving part includes a driving motor and a screw rod, the screw rod is rotatably connected to the driving shaft of the driving motor, a threaded hole is opened on the push rod, the push rod is threadedly connected to the screw rod and the screw rod is arranged in a direction perpendicular to the push rod.

8. The cleaning mechanism according to claim 7, characterized in that: The driving part further comprises a bracket, which is arranged at the end of the screw rod away from the driving motor. The bracket is provided with a through hole corresponding to the screw rod, and the end of the screw rod is rotatably connected in the through hole.

9. The cleaning mechanism according to claim 7, characterized in that: When the driving motor drives the push rod to move to a limit position in a forward direction or a reverse direction, the current in the driving motor increases and the driving shaft drives the screw rod to rotate in the reverse direction.

10. A range hood, characterized in that: The range hood comprises the cleaning mechanism as described in any one of claims 1 to 9, and the range hood further comprises an oil cup, wherein the oil cup is used to receive the oil stains scraped off by the cleaning mechanism.

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