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; the lifting part is arranged on the side, away from the driving part, of the exhaust fume collecting hood, one end of the driving part is connected with the lifting part, when the brush body moves in the forward direction, the lifting part is used for keeping the brush body to make contact with the bottom plate, and when the brush body moves in the reverse direction, the lifting part is used for keeping the brush body to make contact with the bottom plate. The lifting part is used for driving the brush body to move in the direction away from the bottom plate, and a gap is formed between the brush body and the bottom plate. A gap is kept between the brush body and the bottom plate when the brush body moves reversely through the lifting part, so that oil drops which are originally scraped away are prevented from being spread on the bottom plate again under the condition that the brush body reciprocates.

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 the smoke collecting hood: that is, the bottom plate of the smoke collecting hood has a wide area and a significant length, so that the cooking 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, they firmly adhere to the inner surface of the bottom plate under the combined action of their own gravity and the viscous force with the surface of the smoke collecting hood. 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 for the oil droplets to converge into a flow and flow into the oil collecting box.

[0003] In the prior art, a scraping strip is usually arranged to reciprocate on the bottom plate to scrape off the oil droplets accumulated on the bottom plate. However, in the case of the reciprocating movement of the scraping strip, the originally scraped oil droplets will pass through the bottom plate again due to the reciprocating movement of the scraping strip and re-spread the oil droplets remaining on the scraping strip on the bottom plate, resulting in incomplete cleaning effect, thereby increasing the viscous force of the fume adhesion and 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 scraping strip in the prior art fails to clean the bottom plate thoroughly, and to 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;

[0009] A lifting part is arranged on the side of the smoke collecting hood away from the driving part. One end of the driving part is connected to the lifting part. When the brush body moves forward, the lifting part is used to keep the brush body in contact with the bottom plate. When the brush body moves backward, the lifting part is used to drive the brush body to move away from the bottom plate and form a gap between the brush body and the bottom plate.

[0010] In this solution, when the brush body moves forward, it is kept in contact with the bottom plate through the lifting part to effectively scrape off the oil droplets on the bottom plate. When the brush body moves backward, the lifting part keeps a gap between the brush body and the bottom plate, that is, the height of the brush body is increased in the direction away from the bottom plate, so that the brush body cannot contact the bottom plate, thereby forming this gap. The existence of the gap makes the oil droplets scraped off when the brush body moves forward not contact the bottom plate again and drip from the brush body when the brush body moves backward, preventing the oil droplets that were originally scraped away from passing over the bottom plate again due to the reciprocating movement of the brush body and re-spreading the residual oil droplets on the brush body on the bottom plate, improving the cleaning effect.

[0011] Preferably, the brush body includes a push rod and a brush strip. The push rod is provided with a protrusion facing the bottom plate, and the brush strip is provided with a mounting groove. The brush strip is clamped to the protrusion through the mounting groove and connected to the push rod.

[0012] In this solution, through the above settings, the detachable connection between the push rod and the brush strip is realized.

[0013] Preferably, the end cross-section of the brush strip facing the bottom plate is a tooth comb structure.

[0014] In this solution, through the above settings, the end face of the brush strip in contact with the bottom plate can make the oil droplets drip from the end face, especially when the brush strip is away from the bottom plate, thereby avoiding re-spreading the oil droplets on the bottom plate again.

[0015] 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 provided on the push rod. The push rod is screwed to the screw rod and the screw rod is arranged perpendicular to the push rod.

[0016] In this solution, through the above settings, the reciprocating movement of the brush body is realized.

[0017] Preferably, the lifting part includes a first bracket and a second bracket. The first bracket is connected to one end of the screw rod. The second bracket is arranged on the outer peripheral side of the bottom plate. The first bracket is lifted and lowered along the height direction of the bottom plate through the transmission part of the second bracket.

[0018] In this solution, through the above settings, the lifting of the screw rod is realized and a gap is formed between the brush body and the bottom plate.

[0019] Preferably, the transmission part includes a lifting motor, a first connecting rod, a second connecting rod, a first transmission rod, a second transmission rod, a third transmission rod and a slider, the lifting motor is arranged on the side of the base of the first bracket, the first connecting rod is rotatably connected to the output shaft of the lifting motor, the second connecting rod is connected to the scissor-type structure of the first bracket, the other end of the second connecting rod is fixedly connected to the slider, the scissor-type structure is located between the base and the support seat of the first bracket, the first transmission rod, the second transmission rod and the third transmission rod are arranged on the second bracket, the third transmission rod is fixedly connected to the second bracket and the slider is sleeved on the third transmission rod, the first transmission rod and the second transmission rod are arranged away from the first bracket and are located on the side of the third transmission rod, the first transmission rod is rotatably connected to the first connecting rod, one end of the second transmission rod is rotatably connected to the first transmission rod, and the other end is rotatably connected to the slider, and the first transmission rod and the second transmission rod are used to drive the slider to move along the third transmission rod.

[0020] In this solution, through the above arrangement, the support seat of the first bracket is lifted and lowered along the height direction of the bottom plate, thereby driving the screw on the support seat to lift and lower, so as to realize the lifting and lowering of the brush body on the screw.

[0021] Preferably, when the lifting motor drives the support seat of the first bracket to rise along the height direction of the bottom plate, the lifting height of the support seat is h, and the value range of h is 0<h≤50cm.

[0022] In this solution, through the above-mentioned arrangement, the liftable brush body is suitable for range hoods of different models, so as to improve the use range of the cleaning mechanism.

[0023] Preferably, when the driving motor drives the push rod to move in the forward direction to the limit position, the current in the driving motor increases and the driving shaft drives the screw to rotate in the reverse direction, and the lifting motor is turned on and drives the support seat to rise to the limit position in the height direction of the bottom plate;

[0024] When the driving motor drives the push rod to move in the reverse direction to the extreme position, the current in the driving motor increases and the driving shaft drives the screw to rotate in the reverse direction, and the lifting motor reverses and keeps the brush body in contact with the bottom plate.

[0025] In this solution, through the above arrangement, when the brush body reciprocates, there is no need to manually switch the moving direction of the brush body and whether the lifting part lifts the brush body, thereby improving the automation level of the cleaning mechanism.

[0026] Preferably, the brush strip is any one of silicone, rubber and polyurethane.

[0027] In this solution, through the above settings, the brush strip has the ability to deform, which is convenient for scraping off oil droplets, and the material is easy to obtain and the cost is low.

[0028] An oil fume machine, the oil fume machine includes the cleaning mechanism as described above, and the oil fume machine further includes an oil cup for receiving the oil stains scraped off from the cleaning mechanism.

[0029] 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 off by the cleaning mechanism, preventing the oil droplets from dripping from the smoke collecting hood onto the stove, and improving the user experience and cleaning difficulty.

[0030] The positive and progressive effect of the present utility model is that: the present utility model keeps the brush body in contact with the bottom plate when the brush body moves forward through the lifting part to effectively scrape off the oil droplets on the bottom plate, and keeps a gap between the brush body and the bottom plate when the brush body moves backward through the lifting part, that is, raises the height of the brush body in the direction away from the bottom plate, so that the brush body cannot contact the bottom plate, thereby forming this gap. The existence of the gap makes the oil droplets scraped off when the brush body moves forward not contact the bottom plate again when the brush body moves backward and drip from the brush body, preventing the originally scraped oil droplets from passing over the bottom plate again when the brush body reciprocates and re-spreading the residual oil droplets on the brush body on the bottom plate, and improving the cleaning effect. Description of the Drawings

[0031] Figure 1 A perspective view of the oil fume machine according to a preferred embodiment of the present utility model.

[0032] Figure 2 A positional relationship diagram of the cleaning mechanism and the bottom plate according to a preferred embodiment of the present utility model.

[0033] Figure 3 A perspective view of the cleaning mechanism according to a preferred embodiment of the present utility model.

[0034] Figure 4 A perspective view of the lifting part according to a preferred embodiment of the present utility model.

[0035] Figure 5 A schematic diagram of the state where the brush body contacts the bottom plate according to a preferred embodiment of the present utility model.

[0036] Figure 6 A schematic diagram of the state where there is a gap between the brush body and the bottom plate according to a preferred embodiment of the present utility model.

[0037] Description of the reference numerals:

[0038] Oil fume machine 100

[0039] Smoke collecting hood 10

[0040] Oil cup 20

[0041] Base plate 11

[0042] Brush body 1

[0043] Push rod 12

[0044] Protrusion 121

[0045] Brush strip 13

[0046] Installation groove 131

[0047] Drive part 2

[0048] Drive motor 21

[0049] Screw 22

[0050] Lifting part 3

[0051] First bracket 31

[0052] Support seat 311

[0053] Base 312

[0054] Scissor structure 313

[0055] Second bracket 32

[0056] Transmission part 4

[0057] Lifting motor 41

[0058] First connecting rod 42

[0059] Second connecting rod 43

[0060] First transmission rod 44

[0061] Second transmission rod 45

[0062] Third transmission rod 46

[0063] Slider 47 Detailed implementation manner

[0064] A preferred embodiment is given below and the present utility model will be described more clearly and completely in conjunction with the accompanying drawings.

[0065] This embodiment provides a cleaning mechanism, and the specific structure is as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 shown. The cleaning mechanism is arranged on the base plate 11 of the smoke collecting hood 10 of the range hood 100, and the cleaning mechanism includes:

[0066] The brush body 1 is used to scrape the surface of the bottom plate 11 facing the inside of the range hood 100;

[0067] 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;

[0068] The lifting part 3 is arranged on the side of the smoke collecting hood 10 away from the driving part 2. One end of the driving part 2 is connected to the lifting part 3. When the brush body 1 moves forward, the lifting part 3 is used to keep the brush body 1 in contact with the bottom plate 11. When the brush body 1 moves backward, the lifting part 3 is used to drive the brush body 1 to move away from the bottom plate 11 and form a gap between the brush body 1 and the bottom plate 11.

[0069] 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 the oil droplets on the bottom plate 11. In this embodiment, the bottom plate 11 is arranged inclined to the horizontal direction and the brush body 1 moves along the length direction of the bottom plate 11 as an example for illustration, but it is not limited thereto. The lifting part 3 is connected to the other end of the driving part 2, and when the driving part 2 drives the brush body 1 to move forward, the position of the lifting part 3 in the direction away from the bottom plate 11 remains unchanged, so that the brush body 1 is always in contact with the bottom plate 11, and when the brush body 1 moves forward, it can effectively scrape the oil droplets accumulated on the bottom plate 11 to achieve the cleaning of the bottom plate 11. When the driving part 2 drives the brush body 1 to move backward, the lifting part 3 raises the height of the brush body 1 in the direction away from the bottom plate 11, that is, drives the brush body 1 to move away from the bottom plate 11 along the height direction of the bottom plate 11. At this time, a gap is formed between the brush body 1 and the bottom plate 11, so that the brush body 1 cannot be in contact with the bottom plate 11, and thus this gap is formed. The existence of the gap makes the oil droplets scraped when the brush body 1 moves forward not contact the bottom plate 11 again when the brush body 1 moves backward, and drip from the brush body 1 when the brush body 1 moves backward, preventing the oil droplets that have been scraped away from passing through the bottom plate 11 again due to the reciprocating movement of the brush body 1 and re-spreading the residual oil droplets on the brush body 1 on the bottom plate 11, improving the cleaning effect.

[0070] It can be understood that when the brush body 1 moves backward, the oil droplets on the brush body 1 directly drip onto the inclined bottom plate 11 and finally drip into the oil cup 20 of the range hood 100, so as to ensure the cleaning of the bottom plate 11 and improve the cleaning effect of the cleaning mechanism.

[0071] 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 protrusion 121 facing the bottom plate 11, and the brush strip 13 is provided with a mounting groove 131. The brush strip 13 is clamped to the protrusion 121 through the mounting groove 131 and connected to the push rod 12.

[0072] Specifically, the push rod 12 is a rectangular rod. On the side of the push rod 12 facing the bottom plate 11, there is a protrusion 121. The end of the protrusion 121 away from the push rod 12 extends in a direction parallel to the bottom plate 11. When viewed from the cross-section, the protrusion 121 is a "T"-shaped structure. The shape of the installation groove 131 of the brush strip 13 is consistent with that of the protrusion 121. The brush strip 13 and the push rod 12 are snap-connected by inserting the protrusion 121 into the installation groove 131, thereby realizing the detachable connection between the brush strip 13 and the push rod 12, which is convenient for the replacement and installation of the brush strip 13. It can be understood that the setting directions of the protrusion 121 and the installation groove 131 are perpendicular to the movement direction of the brush strip 13, so as to bear the acting force when the brush strip 13 moves through the cooperation of the protrusion 121 and the installation groove 131.

[0073] In this embodiment, the end cross-section of the brush strip 13 facing the bottom plate 11 is a tooth comb structure.

[0074] Specifically, when viewed from the cross-section, the end cross-section of the brush strip 13 facing the bottom plate 11 is a tooth comb structure. The tooth comb structure is a structure of a plurality of teeth arranged side by side in the prior art. Compared with the end face being a flat plate, the tooth comb structure can reduce the accumulation of oil droplets on the end face of the brush strip 13. When the brush strip 13 moves in the reverse direction and away from the bottom plate 11, the oil droplets scraped off when the brush strip 13 moves in the forward direction on the end face of the brush strip 13 can quickly drip off the brush strip 13, preventing the situation where the oil droplets accumulate on the brush strip 13 and are re-spread on the bottom plate 11 when the brush strip 13 moves in the forward direction and contacts the bottom plate 11 again.

[0075] In this embodiment, the driving part 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. The push rod 12 is screwed to the screw rod 22 and the screw rod 22 is arranged perpendicular to the push rod 12.

[0076] 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 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.

[0077] In this embodiment, the lifting part 3 includes a first bracket 31 and a second bracket 32. The first bracket 31 is connected to one end of the screw rod 22. The second bracket 32 is arranged on the outer peripheral side of the bottom plate 11. The first bracket 31 is lifted along the height direction of the bottom plate 11 through the transmission part 4 of the second bracket 32.

[0078] Specifically, the first support 31 is disposed on the bottom plate 11 and is located on the side of the bottom plate 11 away from the driving motor 21. The first support 31 includes a support base 311 and a base 312. The support base 311 has a through hole for accommodating the screw rod 22. The surface of the part of the screw rod 22 extending into the through hole is smooth, so that the support base 311 will not be driven to move along the extending direction of the screw rod 22 when the screw rod 22 rotates. The base 312 is disposed below the support base 311. A scissor structure 313 is provided between the support base 311 and the base 312. The scissor structure 313 is a pair of cross - arranged rods in the prior art, and this pair of rods rotates around the axis of the middle area to lower the height of the support base 311 above the base 312 when the angle formed by this pair of rods is larger, and to raise the height of the support base 311 above the base 312 when the angle formed by this pair of rods is smaller. This is the prior art and will not be elaborated here. The first support 31 is connected to the second support 32 through the transmission part 4, so as to transmit the acting force for driving the scissor structure 313 to the scissor structure 313 through the transmission part 4, and then realize the lifting and lowering of the support base 311 in the height direction of the bottom plate 11. Since one end of the screw rod 22 is connected to the support base 311 and the push rod 12 is screwed onto the screw rod 22, the push rod 12 and the brush strip 13 are driven to move away from the bottom plate 11.

[0079] Further, in this embodiment, the transmission part 4 includes a lifting motor 41, a first connecting rod 42, a second connecting rod 43, a first transmission rod 44, a second transmission rod 45, a third transmission rod 46 and a slider 47. The lifting motor 41 is disposed on the side of the base 312 of the first support 31. The first connecting rod 42 is rotatably connected to the output shaft of the lifting motor 41. The second connecting rod 43 is connected to the scissor structure 313 of the first support 31. The other end of the second connecting rod 43 is fixedly connected to the slider 47. The scissor structure 313 is located between the base 312 and the support base 311 of the first support 31. The first transmission rod 44, the second transmission rod 45 and the third transmission rod 46 are disposed on the second support 32. The third transmission rod 46 is fixedly connected to the second support 32 and the slider 47 is sleeved on the third transmission rod 46. The first transmission rod 44 and the second transmission rod 45 are disposed away from the first support 31 and are located on the side of the third transmission rod 46. The first transmission rod 44 is rotatably connected to the first connecting rod 42. One end of the second transmission rod 45 is rotatably connected to the first transmission rod 44, and the other end is rotatably connected to the slider 47. The first transmission rod 44 and the second transmission rod 45 are used to drive the slider 47 to move along the third transmission rod 46.

[0080] Specifically, the lifting motor 41 is arranged on the side of the base 312, and the lifting motor 41 is a servo motor in the prior art. The lifting motor 41 is connected to the first transmission rod 44, the second transmission rod 45 and the third transmission rod 46 through the first connecting rod 42. Among them, the first transmission rod 44, the second transmission rod 45 and the third transmission rod 46 are stacked in sequence along the direction away from the first bracket 31. The third transmission rod 46 is fixedly connected to the second bracket 32. The first transmission rod 44 is rotatably connected to the third transmission rod 46, and the first connecting rod 42 rotatably connected to the output shaft of the lifting motor 41 passes through the third transmission rod 46 and is used to drive the first transmission rod 44 to rotate. The end of the first transmission rod 44 is connected to one end of the second transmission rod 45. The other end of the second transmission rod 45 is rotatably connected to the slider 47, and the slider 47 is sleeved on the third transmission rod 46. By turning on the lifting motor 41, the first connecting rod 42 rotates self - rotatably and drives the first transmission rod 44 to rotate around the axis of the first connecting rod 42. The rotating first transmission rod 44 can correspondingly drive the second transmission rod 45 to approach or move away from the axis of the first connecting rod 42, thereby driving the slider 47 to move left or right on the third transmission rod 46. And, the second connecting rod 43 is connected to the side of the slider 47 away from the second transmission rod 45. When the slider 47 moves, the second connecting rod 43 is correspondingly driven to move. The second connecting rod 43 is connected to one side rod of the scissor structure 313, so that the angle formed by the pair of rods of the scissor structure 313 changes, and drives the support seat 311 to rise or fall along the height direction of the bottom plate 11.

[0081] In other embodiments, the screw rod 22 can also be driven by a cylinder in the prior art to move the brush body 1 closer to or away from the bottom plate 11, which can also achieve the above - mentioned purpose. This is the prior art and will not be elaborated here.

[0082] It should be noted that there is no lifting part 3 at the driving motor 21 in this embodiment. That is to say, when the end of the screw rod 22 away from the driving motor 21 rises or falls, the height of the end of the screw rod 22 close to the driving motor 21 remains unchanged. A flexible rubber sleeve is arranged at the place where the driving motor 21 accommodates the end of the screw rod 22 to ensure that the height of the end of the screw rod 22 close to the driving motor 21 remains unchanged when the end of the screw rod 22 away from the driving motor 21 rises or falls and forms an angle with the end of the screw rod 22 close to the driving motor 21.

[0083] In this embodiment, when the lifting motor 41 drives the support seat 311 of the first bracket 31 to rise along the height direction of the bottom plate 11, the lifting height of the support seat 311 is h, and the value range of h is 0 < h ≤ 50 cm.

[0084] Specifically, when the brush strip 13 is in close contact with the surface of the bottom plate 11, the end of the push rod 12 close to the top plate of the smoke collecting hood 10 is at the maximum distance from the top plate of the smoke collecting hood 10, and the maximum value of this distance is L 1When the screw rod 22 is driven by the lifting part 3 and rises along the height direction of the bottom plate 11, the height of the push rod 12 rises correspondingly. The height that the push rod 12 rises following the screw rod 22 is h. 1 The height that the end of the screw rod 22 away from the drive motor 21 rises is h, that is, the rising height of the support seat 311 is h, and the distance between the center of the drive motor 21 and the center of the push rod 12 is x. 1 The distance between the center of the drive motor 21 and the end of the screw rod 22 away from the drive motor 21 is X. Since the rising height of the push rod 12 cannot exceed L 1 , that is h 1 ≤L 1 , and through calculation according to trigonometric functions, h 1 =x 1 ·tanα, that is So Therefore, the height range that the push rod 12 can rise is Similarly, substitute the above trigonometric function calculation method into the end of the screw rod 22 away from the drive motor 21, and measure the actual data according to the specific model of the range hood 100, and then calculate that the rising and falling height of the support seat 311 is h, and h is not greater than 50 cm. So that the liftable brush body 1 is applicable to different models of range hoods 100 to improve the use range of the cleaning mechanism. It can be understood that in this embodiment, the trigonometric function is not improved, but the data inside the range hood 100 is substituted into the trigonometric function to obtain the lifting range of the support seat 311, and no more details will be described here.

[0085] In this embodiment, when the drive motor 21 drives the push rod 12 to move to the limit position in the forward direction, the current in the drive motor 21 increases and the drive shaft drives the screw rod 22 to rotate in the reverse direction, and the lifting motor 41 is turned on and drives the support seat 311 to rise to the limit position along the height direction of the bottom plate 11;

[0086] When the drive motor 21 drives the push rod 12 to move to the limit position in the reverse direction, the current in the drive motor 21 increases and the drive shaft drives the screw rod 22 to rotate in the reverse direction, and the lifting motor 41 rotates in reverse and keeps the brush body 1 in contact with the bottom plate 11.

[0087] Specifically, when the drive motor 21 drives the screw 22 to rotate clockwise, the push rod 12 moves forward in the positive direction along the guide of the screw 22. At this time, the position of the lifting part 3 remains unchanged, that is, the lifting motor 41 keeps the height of the support seat 311 unchanged, so that the brush body 1 always contacts the bottom plate 11. When the push rod 12 moves to the end of the screw 22 and cannot move forward continuously, the drive motor 21 will sense an increase in current and then stop rotating forward and start rotating counterclockwise instead. During this reverse rotation process, the lifting motor 41 is simultaneously turned on, and the lifting motor 41 drives the first connecting rod 42, the first transmission rod 44, and the second transmission rod 45 to rotate, and at the same time drives the slider 47 to slide along the third transmission rod 46. Furthermore, the slider 47 drives the second connecting rod 43 and one side rod of the scissor structure 313 to move, and the support seat 311 rises along the height direction of the bottom plate 11. At the same time, this reverse rotation process will drive the push rod 12 to move in the reverse direction, thus forming a periodic reciprocating motion. And the action of raising the support seat 311 along the height direction of the bottom plate 11 enables the oil droplets on the brush body 1 moving in the positive direction to drip from the brush body 1, preventing the oil droplets from spreading on the bottom plate 11 again. When the drive motor 21 rotates forward again, the lifting motor 41 repeats the above actions. It can be understood that the induced current of the drive motor 21 is an existing technology, and this embodiment does not improve it, so no more details will be described here. By using the induced current of the drive motor 21 to realize the forward and reverse rotation of the screw 22, the reciprocating motion and lifting of the brush body 1 can be achieved without manually switching the moving and lifting directions of the brush body 1, improving the automation degree of the cleaning mechanism.

[0088] In this embodiment, the brush strip 13 is any one of silica gel, rubber, and polyurethane. So that the brush strip 13 has the ability to deform. It can be understood that the above materials are convenient for scraping oil droplets, easy to obtain, and low in cost.

[0089] This embodiment also provides a range hood 100. The range hood 100 includes the above cleaning mechanism. The range hood 100 further includes an oil cup 20 for receiving the oil stains scraped by the cleaning mechanism.

[0090] Specifically, the range hood 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 correspondingly inclined and arranged below the bottom plate 11 along the height direction of the range hood 100 to guide the oil droplets scraped by the cleaning mechanism through the inclined bottom plate 11, and then effectively collect the oil droplets through the oil cup 20, preventing the oil droplets from dripping from the smoke collecting hood 10 to the stove, improving the user experience and the cleaning difficulty.

[0091] 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, the driving unit is used to drive the brush body to reciprocate along the length or width direction of the bottom plate; A lifting part, wherein the lifting part is arranged on a side of the smoke hood away from the driving part, one end of the driving part is connected to the lifting part, when the brush body moves in the forward direction, the lifting part is used to keep the brush body in contact with the bottom plate, when the brush body moves in the reverse direction, the lifting part is used to drive the brush body to move in a direction away from the bottom plate and form a gap between the brush body and the bottom 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 protrusion facing the bottom plate, the brush strip is provided with a mounting groove, and the brush strip is clamped on the protrusion through the mounting groove and connected to the push rod.

3. The cleaning mechanism according to claim 2, characterized in that: The end section of the brush bar facing the bottom plate is a tooth comb structure.

4. 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.

5. The cleaning mechanism according to claim 4, characterized in that: The lifting part includes a first bracket and a second bracket, the first bracket is connected to one end of the screw rod, the second bracket is arranged on the outer peripheral side of the base plate, and the first bracket is lifted and lowered along the height direction of the base plate through the transmission part of the second bracket.

6. The cleaning mechanism according to claim 5, characterized in that: The transmission part includes a lifting motor, a first connecting rod, a second connecting rod, a first transmission rod, a second transmission rod, a third transmission rod and a slider, the lifting motor is arranged on the side of the base of the first bracket, the first connecting rod is rotatably connected to the output shaft of the lifting motor, the second connecting rod is connected to the scissor-type structure of the first bracket, the other end of the second connecting rod is fixedly connected to the slider, the scissor-type structure is located between the base and the support seat of the first bracket, the first transmission rod, the second transmission rod and the third transmission rod are arranged on the second bracket, the third transmission rod is fixedly connected to the second bracket and the slider is sleeved on the third transmission rod, the first transmission rod and the second transmission rod are arranged away from the first bracket and are located on the side of the third transmission rod, the first transmission rod is rotatably connected to the first connecting rod, one end of the second transmission rod is rotatably connected to the first transmission rod, and the other end is rotatably connected to the slider, the first transmission rod and the second transmission rod are used to drive the slider to move along the third transmission rod.

7. The cleaning mechanism according to claim 6, characterized in that: When the lifting motor drives the support seat of the first bracket to rise along the height direction of the bottom plate, the lifting height of the support seat is h, and the value range of h is 0<h≤50cm.

8. The cleaning mechanism according to claim 7, characterized in that: When the driving motor drives the push rod to move in the positive direction to the limit position, the current in the driving motor increases and the driving shaft drives the screw to rotate in the reverse direction, and the lifting motor is turned on and drives the support seat to rise to the limit position along the height direction of the bottom plate; When the driving motor drives the push rod to move in the reverse direction to the extreme position, the current in the driving motor increases and the driving shaft drives the screw to rotate in the reverse direction, and the lifting motor reverses and keeps the brush body in contact with the bottom plate.

9. The cleaning mechanism according to claim 2, characterized in that: The brush strip is any one of silicone, rubber and polyurethane.

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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