CN216788827U - Fan cleaning device and range hood with same - Google Patents

Abstract

The utility model discloses a fan cleaning device and a range hood applying the cleaning device, the fan cleaning device comprises a fan system and a cleaning mechanism for cleaning the fan system, the fan system comprises a volute and an impeller arranged in the volute, the cleaning mechanism comprises a cleaning medium supply pipe which can move relative to the fan system by a first driving mechanism, the cleaning medium supply pipe is used for being communicated with an external cleaning medium source, and a nozzle for spraying cleaning medium is arranged on the cleaning medium supply pipe, and the fan cleaning device is characterized in that: the volute is provided with a yielding hole, and the cleaning mechanism further comprises a plugging device; when the fan cleaning device is in a working state, the nozzle extends into the volute through the abdicating hole; when the fan cleaning device is in a non-working state, the nozzle exits from the yielding hole to the outside of the volute, and the plugging device plugs the yielding hole.

Description

Fan cleaning device and range hood with same

Technical Field

The utility model relates to an oil fume purification device, in particular to a fan cleaning device and a range hood applying the fan cleaning device.

Background

The range hood has become one of the indispensable kitchen household electrical appliances in modern families. The range hood works by utilizing the fluid dynamics principle, sucks and exhausts oil smoke through a centrifugal fan arranged in the range hood, and filters partial grease particles by using a filter screen. The centrifugal fan comprises a volute, an impeller arranged in the volute and a motor driving the impeller to rotate. When the impeller rotates, negative pressure suction is generated in the center of the fan, oil smoke below the range hood is sucked into the fan, accelerated by the fan and then collected and guided by the volute to be discharged out of a room.

With the continuous progress of the self-cleaning technology of the range hood, steam cleaning or water cleaning is widely applied to the field of self-cleaning of the range hood, and the basic principle is that a steam generator generates steam or water is pumped by a water pump to convey the steam or water to a nozzle at the tail end of a spray pipe, and the steam or water is quickly sprayed out from the nozzle to flush an impeller and a volute for cleaning. At present, the main nozzles are arranged into a static state and a dynamic state, and the static state is generally fixed at the inner side of an impeller with smaller pressure; the dynamic nozzles are arranged on the outer sides of the impellers, the inner part of the volute on the outer side of the impeller is large in pressure, the opening on the volute can cause the oil smoke to leak the inner cavity seriously, pollute the inner cavity, influence the performance of the range hood and cause the increase of noise, and meanwhile, the oil smoke leakage at the opening can cause the risk of nozzle plugging, so that the volute plugging is a necessary design.

At present, the problem of volute opening caused by the self-cleaning technology of the range hood mainly comprises the following solutions:

firstly, a nozzle with a volute side wall moving in a straight line: the outer diameter of the nozzle and the opening on the volute are made into the same aperture, the nozzle is parked in the volute for a long time, and the volute hole is closed. This way will affect the airflow, causing vortices to be generated inside, affecting the performance and leading to noise rise;

and secondly, forming holes on the annular wall of the volute, arranging the nozzles to do linear motion, forming linear notches on the annular wall, and moving the annular wall along with another moving baffle to form an opening and closing state to block the holes. Because the annular wall is formed by arc curves with different radiuses and is not a circular track, the annular wall moves along the annular wall to cause clamping stagnation, so that the movement track is not a strict arc, and the installation and manufacturing requirements of the blocking structure are also strict.

Therefore, further improvements are desired.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the present invention is to provide a cleaning device for a blower, which can smoothly block a volute without being blocked in a non-working state, so as to prevent pressure leakage and avoid pollution of an inner cavity of a range hood when the blower is in operation, and simultaneously prevent a nozzle from exiting the volute and avoiding blockage, so as to ensure normal flow of air flow and reduce noise.

The second technical problem to be solved by the utility model is to provide a range hood with the fan cleaning device.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: the utility model provides a fan belt cleaning device, includes fan system and the wiper mechanism who is used for wasing fan system, fan system includes the spiral case and sets up the impeller in the spiral case, the wiper mechanism includes the cleaning medium supply pipe that is driven by first actuating mechanism and can move relatively fan system, the cleaning medium supply pipe is used for the cleaning medium source intercommunication with the outside, set up the nozzle that supplies cleaning medium to spout on the cleaning medium supply pipe, its characterized in that: the volute is provided with a yielding hole, and the cleaning mechanism further comprises a plugging device; when the fan cleaning device is in a working state, the nozzle extends into the volute through the abdicating hole; when the fan cleaning device is in a non-working state, the nozzle exits from the yielding hole to the outside of the volute, and the plugging device plugs the yielding hole.

According to an aspect of the utility model, the blocking device blocks the relief hole from the inside of the scroll casing.

Further, according to an aspect of the present invention, the plugging device is integrally formed with the cleaning medium supply tube to move synchronously.

Preferably, in order to facilitate the sealing of the abdicating hole and simultaneously avoid interfering with the injection of the nozzle, the cleaning medium supply pipe has an end surface facing the abdicating hole, the sealing device is integrally formed on the end surface of the cleaning medium supply pipe, and the shape and size of the sealing device are matched with the abdicating hole.

In order to improve the sealing performance, the peripheral wall of the plugging device is inclined, the circumferential dimension of the peripheral wall of the plugging device is gradually reduced from one side far away from the end face of the cleaning medium supply pipe to one side close to the end face of the cleaning medium supply pipe, and the dimension of the plugging device at least at one side far away from the end face of the cleaning medium supply pipe is larger than the abdicating hole.

According to another aspect of the present invention, the plugging device is provided separately from the cleaning medium supply pipe, the plugging device is provided on the scroll casing, and the plugging device is urged by the cleaning medium supply pipe to open the receding hole and maintain a tendency to plug the receding hole.

Preferably, in order to facilitate the plugging device to plug and open the abdicating hole, according to an aspect of the present invention, the plugging device is an elastic member, the plugging device has two opposite ends and is respectively marked as a head portion and a tail portion, a portion of the tail portion is located outside the volute and a portion is located inside the volute, the tail portion is provided with a notch, a portion of the edge of the abdicating hole of the volute is clamped in the notch and is fixedly connected, and the head portion of the plugging device can abut against the inner side of the edge of the abdicating hole to plug the abdicating hole.

In order to improve the sealing performance, a step part is formed on the head part of the plugging device, and the step part can be abutted against the inner side of the yielding hole edge of the volute.

Preferably, in order to facilitate the plugging device to plug and open the abdicating hole, according to an aspect of the present invention, the plugging device is an elastic member, the plugging device has two opposite ends and is respectively marked as a head portion and a tail portion, a portion of the tail portion is located outside the volute and a portion of the tail portion is located inside the volute, the periphery of the plugging device has an annular notch, an edge of the abdicating hole of the volute is clamped in the notch, and the tail portion is fixedly connected with the volute.

In order to improve the sealing performance, the notch extends from the outer periphery inwards from the direction far away from the cleaning medium supply pipe to the direction close to the cleaning medium supply pipe in a gradually inclined manner towards the middle, so that the sealing surface of the notch and the volute is in a conical shape.

In order to reduce the sliding resistance between the cleaning medium supply pipe and the anti-blocking device, the cleaning medium supply pipe is provided with an end face facing the abdicating hole, the nozzle is arranged on the side wall of the cleaning medium supply pipe adjacent to the end face, and the end face of the cleaning medium supply pipe is in a spherical crown shape.

According to another aspect of the utility model, the blocking device is partially positioned in the volute and partially positioned outside the volute and is blocked at the abdicating hole, the blocking device is made of flexible materials, and the blocking device can generate certain deformation under the pressure of the volute at the position of the edge of the abdicating hole, so that the abdicating hole is blocked.

Preferably, in order to facilitate the exit of the nozzle from the volute, the cleaning medium supply duct is Y-shaped at a position close to the volute, the blocking device being arranged at the end of one of the branches of the Y-shape and the nozzle being arranged at the end of the other branch of the Y-shape.

According to another aspect of the utility model, the blocking device blocks the abdicating hole from the outside of the volute, the blocking device moving along a direction parallel to the axial direction of the impeller, thus avoiding the drawback of jamming moving along the annular wall.

According to another aspect of the present invention, the plugging device is provided separately from the cleaning medium supply pipe, and the plugging device is moved in a direction parallel to the axial direction of the impeller by being driven by an independent moving mechanism.

Preferably, the motion mechanism comprises a second driving mechanism and a connecting rod, and the second driving mechanism is a linear driving module; the plugging device is fixedly arranged at the end part of the connecting rod facing the volute; the output end of the second driving mechanism directly or indirectly drives the connecting rod to move, so that the connecting rod moves to the corresponding position of the yielding hole to block the yielding hole or leave the yielding hole.

According to one aspect of the utility model, the second driving mechanism is an electric push rod, the cleaning mechanism further comprises a mounting bracket for fixing the second driving mechanism and the fan system, the mounting bracket is provided with a sliding groove, the connecting rod is in sliding fit with the sliding groove, the sliding groove penetrates through two surfaces of the mounting bracket close to and far away from the volute, and the connecting rod penetrates through the sliding groove from one side of the mounting bracket close to the volute and can move along the sliding groove.

In order to reduce the motion resistance of the connecting rod, a rolling bearing is arranged on the periphery of the connecting rod, the connecting rod is connected with an inner ring of the rolling bearing, and the rolling bearing is arranged in the sliding groove.

According to another aspect of the present invention, the second driving mechanism is a hydraulic cylinder including a cylinder body and a piston rod; the plugging device is fixedly arranged at the end part of the connecting rod facing the volute; a piston is arranged in the cylinder body to divide the cylinder body into a first cavity far away from the connecting rod and a second cavity close to the connecting rod; the piston rod part sets up in the second cavity and the part extends the cylinder body and is connected with the connecting rod, the piston rod still is connected with the piston simultaneously, the inlet has been seted up on the lateral wall of cylinder body, thereby the inlet corresponds with the second cavity and can promote the piston to remove to the direction of keeping away from the connecting rod when getting into liquid and open the hole of stepping down, the trend that the piston keeps removing to the direction of connecting rod.

In order to reset the anti-blocking device, the hydraulic cylinder further comprises a first elastic piece, and the first elastic piece is arranged in the first chamber; the two ends of the first elastic piece are respectively connected with the piston and the wall surface of the cylinder body, which is positioned on the first chamber and far away from the end part of the piston, so that the piston keeps the trend of moving towards the direction of the connecting rod.

According to another aspect of the present invention, the plugging device is provided separately from the cleaning medium supply pipe, and the plugging device and the cleaning medium supply pipe are linked to be movable in a direction parallel to the axial direction of the impeller.

Preferably, the linked movement mechanism is that the cleaning mechanism further comprises a movement mechanism for linking the plugging device and the cleaning medium supply pipe, the movement mechanism comprises a connecting rod, a second elastic piece and a first connecting rod, the plugging device is fixedly arranged at the end part of the connecting rod facing the volute, one end of the second elastic piece is fixed relative to the volute, and the other end of the second elastic piece is fixed with the connecting rod; the spiral casing cleaning device is characterized in that a track groove is formed in one side, far away from the spiral casing, of the cleaning medium supply pipe, one end of the first connecting rod is arranged in the track groove in a sliding mode, the other end of the first connecting rod is connected with the connecting rod, and the two ends of the first connecting rod can rotate relative to the connecting position.

In order to limit the movement track of the connecting rod conveniently, the cleaning mechanism further comprises an installation support fixed with the fan system, a sliding groove is formed in the installation support, the connecting rod is in sliding fit with the sliding groove, the sliding groove penetrates through two surfaces, close to and far away from the volute, of the installation support, and the connecting rod penetrates through the sliding groove from one side, close to the volute, of the installation support; the mounting bracket is provided with a fixing column, and the end part of the second elastic piece is connected with the fixing column.

In order to ensure the linkage of the plugging device and the cleaning medium supply pipe and simultaneously open and plug the abdication hole, the cleaning medium supply pipe is driven by a first driving mechanism to swing, and the cleaning medium supply pipe and the track groove are in the shape of concentric arcs extending in the same direction.

Preferably, the cleaning medium supply pipe is arc-shaped, and the cleaning medium supply pipe is in transmission connection with the output end of the first driving mechanism, so that the cleaning medium supply pipe is driven by the first driving mechanism to swing.

Preferably, the volute comprises two cover plates arranged at intervals and an annular wall located between the two cover plates, and the abdicating hole is formed in the annular wall.

The technical solution adopted by the present invention to solve the second technical problem is as follows: a range hood, its characterized in that: the fan cleaning device is applied.

Compared with the prior art, the utility model has the advantages that: by arranging the plugging device, the integrity of the volute in a working state is ensured, larger performance influence is avoided, the phenomenon that oil smoke leaks to block the nozzle and indirectly forms a certain protection effect on the nozzle is avoided, and the plugging device does not move along the annular wall of the volute, so that the clamping stagnation phenomenon is avoided; the plugging device and the supply pipe of the cleaning mechanism are integrally formed, no additional driving matching is needed, and the structure is compact; the plugging device and the cleaning mechanism supply pipe are arranged in a split manner, and the plugging device has certain elasticity, does not need external driving, has the recovery capability, is simple in structure, has stronger plasticity, and is easy to deform; the anti-blocking device is driven along the axial direction of the impeller through an external movement mechanism, so that the clamping stagnation defect of movement along the annular wall is avoided, meanwhile, the external drive is directly driven, the operation is relatively simple, the failure problem is less, the scheme of adopting medium drive does not need an external power source, and the drive can be realized by means of water power; through set up the driven mechanism such as connecting rod between cleaning medium supply tube and plugging device, further simplified the structure, reduced the trouble.

Drawings

FIG. 1 is a schematic view of a fan cleaning apparatus according to a first embodiment of the present invention;

FIG. 2 is a schematic view of a mounting bracket of a concealed cleaning mechanism of a fan cleaning device according to a first embodiment of the present invention;

FIG. 3 is a schematic view of a hidden cleaning mechanism of the fan cleaning device according to the first embodiment of the present invention;

FIG. 4 is a schematic view of a hidden mounting bracket of a cleaning mechanism of a fan cleaning device according to a first embodiment of the present invention;

FIG. 5 is a cross-sectional view of FIG. 2;

FIG. 6 is an enlarged view of a portion I of FIG. 5;

FIG. 7 is a schematic view of a concealed mounting bracket of a cleaning mechanism of a fan cleaning device according to a second embodiment of the present invention;

FIG. 8 is a cross-sectional view of a mounting bracket of a concealed cleaning mechanism of a fan cleaning device according to a second embodiment of the present invention;

FIG. 9 is an enlarged view of portion II of FIG. 8;

FIG. 10 is a schematic view of a mounting bracket of a concealed cleaning mechanism of a blower cleaning device according to a third embodiment of the utility model;

FIG. 11 is a schematic view of a hidden cleaning mechanism of a blower cleaning device according to a third embodiment of the present invention;

FIG. 12 is a cross-sectional view of FIG. 10;

FIG. 13 is an enlarged view of a portion III of FIG. 12;

fig. 14 is a partial schematic view of a plugging device and a volute of a cleaning mechanism of a blower cleaning device according to a fourth embodiment of the utility model;

FIG. 15 is a cross-sectional view of FIG. 14;

FIG. 16 is a schematic view of a cleaning mechanism according to a fifth embodiment of the present invention;

fig. 17 is a sectional view (blocked state) of a blower cleaning device according to a fifth embodiment of the present invention;

FIG. 18 is an enlarged view of a portion VI of FIG. 17

FIG. 19 is a schematic view of a fan cleaning apparatus according to a sixth embodiment of the present invention;

FIG. 20 is a schematic view of a mounting bracket of a concealed cleaning mechanism of a blower cleaning device according to a sixth embodiment of the present invention (in an unplugged state);

FIG. 21 is a schematic view of a concealed mounting bracket for a cleaning mechanism of a blower cleaning device in accordance with a sixth embodiment of the present invention;

fig. 22 is a schematic view (blocking state) of a mounting bracket of a hidden cleaning mechanism of a blower cleaning device according to a sixth embodiment of the present invention;

FIG. 23 is a cross-sectional view of FIG. 22;

FIG. 24 is an enlarged view of a portion IV of FIG. 23;

FIG. 25 is a schematic view of an alternative embodiment of a drive mechanism for the wash mechanism of a sixth embodiment of the present invention;

FIG. 26 is a schematic view of a fan cleaning apparatus according to a seventh embodiment of the present invention;

FIG. 27 is a schematic view of a concealed mounting bracket of a cleaning mechanism of a blower cleaning device in accordance with a seventh embodiment of the present invention;

fig. 28 is a schematic view (blocking state) of a mounting bracket of a hidden cleaning mechanism of the blower cleaning device according to the seventh embodiment of the present invention;

fig. 29 is an enlarged view of a portion v of fig. 28.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and that the directional terms are used for purposes of illustration and are not to be construed as limiting, for example, because the disclosed embodiments of the present invention may be oriented in different directions, "lower" is not necessarily limited to a direction opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Example one

Referring to fig. 1 to 6, a fan cleaning device includes a fan system 1 and a cleaning mechanism 2, where the fan system 1 is a centrifugal fan, and is applied to a range hood in this embodiment, alternatively, the fan system 1 may also be applied to any other occasions requiring such a power device.

The fan system 1 includes a volute 11 and an impeller 12 disposed in the volute 11, the volute 11 includes two cover plates 111 arranged at intervals and a circumferential wall 112 located between the two cover plates 111, the cover plate 111 is provided with an air inlet 113, which may be a single air inlet or a double air inlet. The structure of the fan system 1 is the same as that of the prior art, and is not described herein again.

The annular wall 112 of the volute 11 is provided with a relief hole 114, so that the inside of the volute 11 is in fluid communication with the outside of the volute 11.

The cleaning mechanism 2 is disposed outside the volute casing 11, and includes a first driving mechanism 21, a cleaning medium supply pipe 22, and a plugging device 23, wherein one end of the cleaning medium supply pipe 22 is used for communicating with an external cleaning medium source, and the other end is provided with a nozzle 221. The cleaning medium can be water, high-temperature steam, cleaning agent, etc. The first drive mechanism 21 is a motor in this embodiment, and its output shaft is perpendicular to the axial direction of the impeller 12. The first driving mechanism 21 is fixedly mounted on the outer side of the volute casing 11 through a mounting bracket 24. The cleaning medium supply pipe 22 is formed in an arc shape, and is connected to the output shaft of the first drive mechanism 21 via a second link 223, and the cleaning medium supply pipe 22 is driven by the first drive mechanism 21 to swing, and the center of rotation thereof is located on the output shaft of the first drive mechanism 21.

In the working state, the cleaning medium supply pipe 22 is driven by the first driving mechanism 21 to reciprocate at least in the portion of the nozzle 221 extending from the relief hole 114 into the volute casing 11, so as to achieve the purpose of cleaning the impeller 12.

The cleaning medium supply pipe 22 has an end surface 222 facing the relief hole 114, and the nozzle 221 is provided on a side wall of the cleaning medium supply pipe 22 adjacent to the end surface 222. In the present embodiment, the cleaning medium supply pipe 22 performs a swinging motion, alternatively, the cleaning medium supply pipe 22 may perform other motions as long as at least the nozzle 221 is extended into the volute casing 11 in the working state and is withdrawn out of the volute casing 11 in the non-working state.

The plugging device 23 is integrally formed on the end surface 222 of the cleaning medium supply pipe 22, and in the present embodiment, the plugging device 23 has a sheet-like structure, and the shape and size thereof are matched with the relief hole 114. The width of the blocking device 23 does not block the spraying path of the nozzle 221, when the cleaning mechanism 2 needs to start cleaning, the cleaning medium supply pipe 22 rotates towards the volute casing 11, the blocking device 23 rotates along with the cleaning medium supply pipe 22, and the nozzle 221 sprays cleaning medium into the volute casing 11, such as towards the impeller 12, for cleaning. After the cleaning mechanism 2 finishes the cleaning work, the cleaning medium supply pipe 22 rotates towards the outside of the volute casing 11, until the nozzle 221 exits from the outside of the volute casing 11, when the blocking device 23 moves to the abdicating hole 114, the first driving mechanism 21 stops working, the cleaning medium supply pipe 22 stops moving, and at this time, the blocking device 23 just blocks the abdicating hole 114.

Therefore, the spray cleaning of the nozzle 221 can be realized in the working state, the blockage can be avoided under the condition that the abdicating hole 114 is blocked in the non-working state, and the influence on the performance of the fan system 1 is also avoided. In addition, the movement mode of the plugging device 23 (moving along with the cleaning medium supply pipe 22 to enter and exit the volute casing 11) avoids the defect of clamping stagnation caused by movement along the annular wall 112 of the volute casing 11, and the movement process is smooth and does not clamp stagnation.

Example two

Referring to fig. 7 to 9, the present embodiment is different from the first embodiment in that the plugging device 23 is not a rectangular parallelepiped sheet-like structure, the peripheral wall of the plugging device 23 is inclined, and the circumferential dimension gradually decreases from the side away from the end face 222 of the cleaning medium supply pipe 22 to the side close to the end face 222 of the cleaning medium supply pipe 22. The dimension of the blocking device 23 at least on the side away from the end face 222 of the cleaning medium supply pipe 22 is larger than the relief hole 114, so as to avoid that the blocking device 23 is also integrally withdrawn out of the volute casing 11 when the nozzle 221 is withdrawn out of the volute casing 11.

Therefore, when the plugging device 23 moves along with the cleaning medium supply pipe 22 in the direction out of the volute casing 11 and when the part of the plugging device 23 with the size larger than the abdicating hole 114 moves to the abdicating hole 114, the plugging device 23 cannot continue to move out of the volute casing 11, so that mechanical limitation is realized, the phenomenon that the first driving mechanism 21 is not accurate and cannot be closed in place due to inaccurate positioning is avoided, and meanwhile, better sealing effect can be realized due to the cone shape.

For further sealing, a sealing rubber gasket (not shown) may be disposed on the outer periphery of the plugging device 23 to increase the sealing effect, and at the same time, the impact of plugging when the cleaning medium supply pipe 22 is withdrawn can be buffered to avoid damage to the cleaning mechanism 2.

EXAMPLE III

Referring to fig. 10 to 13, the present embodiment is different from the first embodiment in that the plugging device 23 is made of an elastic material and is provided separately from the cleaning medium supply tube 22.

The plugging device 23 has opposite ends, which are respectively marked as a head portion and a tail portion, the tail portion is located outside the volute 11 and is located in the volute 11, the tail portion is provided with a notch 231, and a part of edges of the abdicating hole 114 of the volute 11 is clamped in the notch 231. The tail of the plugging device 23 may be fixed to the annular wall 112 of the volute 11, for example by means of adhesive or screws.

The head of the plugging device 23 is formed with a step 232, and the step 232 abuts against the inner side of the edge of the receding hole 114 of the scroll casing 11. After the installation is finished, the plugging device 23 has a certain pretightening force, and a gap is not left between the plugging device and the volute 11.

When the cleaning mechanism 2 starts cleaning, the cleaning medium supply pipe 22 rotates to push the plugging device 23, and the plugging device 23 rotates around a certain axis of the tail part (e.g. parallel to the axial direction of the impeller 12) to open the abdicating hole, so that the nozzle 221 enters the volute 11.

After the cleaning operation is completed, the cleaning medium supply pipe 22 rotates reversely until the nozzle 221 exits out of the volute 11, and the blocking device 23 resets to block the relief hole 114.

In order to avoid damage to the occlusion device 23, the end face 222 of the cleaning medium supply tube 22 is provided in the shape of a spherical cap, which also reduces the sliding resistance.

Example four

Referring to fig. 14 and 15, in the present embodiment, the difference from the third embodiment is that the notch 231 is annular and formed around the blocking device 23, so that the edge of the relief hole 114 is completely clamped in the notch 231. The mounting convenience and the stability of the fixation of the closure device 23 can thus be improved. The sealing surface of the slot 231 and the scroll casing 11 may be provided with a tapered surface to enhance the sealing effect, where the tapered surface means that the slot 231 extends from the outer periphery to the inner side from the end surface 222 far away from the cleaning medium supply pipe 22 to the direction close to the end surface 222 of the cleaning medium supply pipe 22 and gradually inclines towards the middle.

Similarly, when the cleaning mechanism 2 needs to start cleaning, the end face 222 of the cleaning medium supply pipe 22 pushes the head of the plugging device 23 open (the head is deformed to some extent) when rotating, and the plugging device 23 rotates around the tail, so as to open the abdicating hole 114.

EXAMPLE five

Referring to fig. 16 to 18, in the present embodiment, the difference from the first embodiment is that the cleaning medium supply pipe 22 is Y-shaped at a position close to the volute casing 11, the blocking device 23 is disposed at the end of one branch of the Y-shape, the nozzle 221 is disposed at the end of the other branch of the Y-shape, and the length of the two branches is long enough to ensure that the blocking device 23 can block the abdicating hole 114 when the nozzle 221 is withdrawn. The Y-shaped portion and the other portion of the cleaning medium supply pipe 22 may be integrally formed or may be separately provided and connected to each other.

The blocking device 23 is made of a flexible material, such as silicone rubber, etc., and is disposed on the cleaning medium supply pipe 22 in a nested manner and is interlocked with the cleaning medium supply pipe 22. When the blocking device 23 blocks the abdicating hole 114, the blocking device 23 passes through the abdicating hole 114, so that part of the blocking device is positioned in the volute 11 and part of the blocking device is positioned outside the volute 11, and the blocking device is deformed to a certain extent by the pressure of the volute 11 at the position of the edge of the abdicating hole 114, and the blocking of the abdicating hole 114 is realized by the flexibility of the blocking device 23. EXAMPLE six

Referring to fig. 19 to 25, in the present embodiment, the difference from the first embodiment is that the plugging device 23 is disposed outside the annular wall 112 of the volute 11, and the cleaning mechanism 2 further includes a moving mechanism for driving the plugging device 23 to move so as to open and close the abdicating hole 114.

The moving mechanism comprises a second driving mechanism 251, a connecting rod 252 and a rolling bearing 253, a sliding groove 241 is formed in the mounting bracket 24, the sliding groove 241 extends along the direction parallel to the axial direction of the impeller 12, and the connecting rod 252 is in sliding fit with the sliding groove 241 and can move along the direction parallel to the axial direction of the impeller 12, so that clamping stagnation caused by movement along the annular wall 112 is avoided. The sliding groove 241 penetrates through two surfaces of the mounting bracket 24, which are close to and far from the annular wall 112 of the scroll casing 11, the connecting rod 252 penetrates through the sliding groove 241 from one side of the mounting bracket 24, which is close to the annular wall 112, and the output end of the second driving mechanism 251 directly or indirectly drives the connecting rod 252 to move.

The blocking device 23 is fixedly arranged at the end of the connecting rod 252 facing the annular wall 112 of the volute 11, and the two can be fixed by welding. The outer periphery of the connecting rod 232 is provided with a rolling bearing 253, the connecting rod 232 is connected with the inner ring of the rolling bearing 253, and the rolling bearing 253 is arranged in the sliding groove 241, so that the position of the connecting rod 232 can be limited, and the motion resistance of the connecting rod 232 is reduced.

When the cleaning mechanism 2 needs to start the cleaning operation, as shown in fig. 20, the blocking device 23 and the abdicating hole 114 are arranged in a staggered manner, the abdicating hole 114 is in an open state, and the nozzle 221 of the cleaning medium supply pipe 22 rotatably extends into the volute casing 11 for cleaning.

After the cleaning mechanism 2 finishes the cleaning operation, the nozzle 221 of the cleaning medium supply pipe 22 rotates reversely to exit out of the volute 11, and then the second driving mechanism 251 is started to drive the connecting rod 252 to drive the blocking device 23 to move towards the direction of the abdicating hole 114 until the abdicating hole 114 is completely covered, so as to complete the blocking of the abdicating hole 114, as shown in fig. 22 to 24.

Alternatively, the second driving mechanism 251 may be a hydraulic cylinder, and a cleaning medium may be used to drive the cylinder of the second driving mechanism 251. Referring to fig. 25, the second driving mechanism 251 includes a cylinder 2511, a first elastic member 2512 and a piston rod 2513, and a piston 2514 is disposed in the cylinder 2511 to divide the cylinder 2511 into two separate chambers, namely a first chamber 25111 far from the connecting rod 252 and a second chamber 25112 near the connecting rod 252. A first elastic member 2512, preferably a spring, is disposed in the first chamber 25111, and both ends of the first elastic member 2512 respectively connect the piston 2514 and the cylinder 2511 at the end wall surface of the first chamber 25111 away from the piston 2514, so that the piston 2514 maintains a tendency to move in the direction of the connecting rod 252. A piston rod 2513 is partially disposed in the second chamber 25112 and partially extends out of the cylinder 2511 to connect with the connecting rod 252, with the piston rod 2513 also connecting with the piston 2514. A liquid inlet 25113 is formed in the side wall of the cylinder 2511, the liquid inlet 25113 corresponds to the second chamber 25112, and the cleaning medium can be communicated with the cleaning medium supply pipe 22 through a soft conduit, so that the cleaning medium can enter the second chamber 25112 through the liquid inlet 25113.

When cleaning, cleaning medium is conveyed, and after entering the second chamber 25112 from the liquid inlet 25113, the piston 2514 is pushed to communicate with the piston rod 2513 to move so as to compress the first chamber 25111, that is, the piston rod 2513 is pushed to move in a direction away from the connecting rod 252. Therefore, the receding hole 114 is opened, the nozzle 221 enters the volute 11 for cleaning, after the cleaning is finished, the nozzle 221 exits the volute 11, and then the supply of the cleaning medium is stopped, the restoring force of the first elastic member 2512 resets the piston rod 2513 (a part of the cleaning medium in the second chamber 25112 returns to the cleaning medium supply pipe 22), and the connecting rod 252 is pushed to move towards the receding hole 114 until the receding hole 114 is blocked.

In the first to sixth embodiments, the movement of the cleaning medium supply pipe 22 may not be a swinging movement, such as a linear movement or other curved movement, and the receding hole 114 may be formed at another position of the scroll casing 11.

EXAMPLE seven

Referring to fig. 26 and 27, in the present embodiment, the difference from the sixth embodiment described above is that the connection rod 252 is driven by the rotation of the cleaning medium supply pipe 22.

The cleaning medium supply pipe 22 has an orbit groove 224 formed on a side thereof away from the annular wall 112 of the scroll casing 11, and the orbit groove 224 is also arcuate, extends in the same direction as the cleaning medium supply pipe 22, and is concentric with the cleaning medium supply pipe 22. The moving mechanism further includes a first link 254 having one end disposed in the rail groove 224 so as to be slidable along the rail groove 224 and the other end connected to the link 252. Both ends of the first link 254 are rotatable with respect to the connection position.

The moving mechanism further includes a second elastic member 255 and a fixed post 256, the fixed post 256 is fixed on the annular wall 112 of the scroll casing 11, and the second elastic member 255 is preferably a spring, and both ends of the second elastic member 255 are connected with the fixed post 256 and the connecting rod 252, respectively.

In the non-operating state, see fig. 28 and 29, the blocking device 23 blocks the abdicating hole 114, and the second elastic member 255 is in the state of maximum stretching.

When the cleaning mechanism 2 needs to start cleaning operation, the nozzle 221 of the cleaning medium supply pipe 22 moves towards the direction extending into the spiral case 11, and due to the action of the second elastic member 255, the connecting rod 252 (together with the blocking device 23) moves away from the abdicating hole 114, and the abdicating hole 114 is gradually opened, the driving force at this time is spring force, and the movement of the connecting rod 252 makes the first connecting rod 254 follow up, so that the end track groove 224 of the first connecting rod 254 is ensured to be clamped at the end close to the end face 222, until the state shown in fig. 26 and 27 is reached. Thereafter, the nozzle 221 continues to move into the volute 11, the first connecting rod 254 follows, and when the first connecting rod 254 is stopped by the blocking device 23, the end of the first connecting rod 254 moves in the track groove 224 along with the inward movement of the nozzle 221, and the end of the track groove 224 can ensure that the nozzle 221 moves to the limit position.

After the cleaning operation is finished, the nozzle 221 is withdrawn from the volute 11, and after a certain stroke is reached, the plugging device 23 is driven to reset, and finally the state of fig. 28 and 29 is finished.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion, respectively), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion and/or be transported to the second portion, and may be a direct communication between the first portion and the second portion, or an indirect communication between the first portion and the second portion via at least one third element, such as a fluid channel, e.g., a pipe, a channel, a duct, a flow guide, a hole, a groove, or a chamber that allows a fluid to flow through, or a combination thereof.

Claims (27)

1. The utility model provides a fan belt cleaning device, includes fan system (1) and wiper mechanism (2) that is used for wasing fan system (1), fan system (1) includes spiral case (11) and sets up impeller (12) in spiral case (11), wiper mechanism (2) include by first actuating mechanism (21) drive and can be relative cleaning medium supply pipe (22) of fan system (1) motion, cleaning medium supply pipe (22) are used for the cleaning medium source intercommunication with the outside, set up on cleaning medium supply pipe (22) and supply the nozzle (221) that cleaning medium erupted, its characterized in that: the volute (11) is provided with a yielding hole (114), and the cleaning mechanism (2) further comprises a plugging device (23);

when the fan cleaning device is in a working state, the nozzle (221) extends into the volute (11) through the abdicating hole (114);

when the fan cleaning device is in a non-working state, the nozzle (221) exits from the yielding hole (114) to the outside of the volute (11), and the blocking device (23) blocks the yielding hole (114).

2. The fan cleaning apparatus according to claim 1, wherein: the blocking device (23) blocks the yielding hole (114) from the inside of the volute (11).

3. The fan cleaning apparatus according to claim 2, wherein: the blocking device (23) is integrally formed with the cleaning medium supply pipe (22) and moves synchronously.

4. The fan cleaning apparatus according to claim 3, wherein: the cleaning medium supply pipe (22) is provided with an end face (222) facing the yielding hole (114), the blocking device (23) is integrally formed on the end face (222) of the cleaning medium supply pipe (22), and the shape and the size of the blocking device (23) are matched with the yielding hole (114).

5. The fan cleaning apparatus according to claim 4, wherein: the peripheral wall of the plugging device (23) is inclined, the circumferential dimension of the peripheral wall of the plugging device (23) is gradually reduced from one side far away from the end face (222) of the cleaning medium supply pipe (22) to one side close to the end face (222) of the cleaning medium supply pipe (22), and the dimension of the plugging device (23) at least at one side far away from the end face (222) of the cleaning medium supply pipe (22) is larger than the abdicating hole (114).

6. The fan cleaning apparatus according to claim 2, wherein: the blocking device (23) and the cleaning medium supply pipe (22) are arranged separately, the blocking device (23) is arranged on the volute (11), and the blocking device (23) is pushed by the cleaning medium supply pipe (22) to open the abdicating hole (114) and keep the trend of blocking the abdicating hole (114).

7. The fan cleaning apparatus according to claim 6, wherein: plugging device (23) are the elastic component, plugging device (23) have relative both ends and mark respectively for head and afterbody, the part of afterbody is located spiral case (11) outside and the part is located spiral case (11), notch (231) have been seted up to the afterbody, the partial border centre gripping of the hole of stepping down (114) of spiral case (11) is in notch (231) and connect fixedly, the head of plugging device (23) then can with the inboard butt in border of the hole of stepping down (114) and shutoff hole of stepping down (114).

8. The fan cleaning apparatus according to claim 7, wherein: the head of the plugging device (23) is provided with a step part (232), and the step part (232) can abut against the inner side of the edge of the yielding hole (114) of the volute (11).

9. The fan cleaning apparatus according to claim 6, wherein: the blocking device (23) is an elastic piece, the blocking device (23) is provided with two opposite ends and is marked as a head portion and a tail portion respectively, the tail portion is located outside the volute (11) and the tail portion is located inside the volute (11), the periphery of the blocking device (23) is provided with an annular notch (231), the edge of a yielding hole (114) of the volute (11) is clamped inside the notch (231), and the tail portion is fixedly connected with the volute (11).

10. The fan cleaning apparatus according to claim 9, wherein: the notch (231) extends from the outer periphery inwards from the direction far away from the cleaning medium supply pipe (22) to the direction close to the cleaning medium supply pipe (22) and gradually inclines towards the middle, so that the sealing surface of the notch (231) and the volute (11) is conical.

11. The fan cleaning apparatus according to claim 6, wherein: the cleaning medium supply pipe (22) is provided with an end face (222) facing the abdicating hole (114), the nozzle (221) is arranged on the side wall of the cleaning medium supply pipe (22) adjacent to the end face (222), and the end face (222) of the cleaning medium supply pipe (22) is in a spherical crown shape.

12. The fan cleaning apparatus according to claim 1, wherein: the plugging device (23) is made of flexible materials, and the plugging device (23) can be deformed to a certain extent by the pressure of the volute (11) at the position of the edge of the yielding hole (114), so that the yielding hole (114) is plugged.

13. The fan cleaning apparatus according to claim 12, wherein: the cleaning medium supply pipe (22) is Y-shaped at a position close to the volute (11), the plugging device (23) is arranged at the tail end of one branch of the Y-shape, and the nozzle (221) is arranged at the tail end of the other branch of the Y-shape.

14. The fan cleaning apparatus according to claim 1, wherein: the blocking device (23) blocks the yielding hole (114) from the outside of the volute (11).

15. The fan cleaning apparatus of claim 14, wherein: the plugging device (23) is provided separately from the cleaning medium supply pipe (22), and the plugging device (23) is driven by an independent movement mechanism to move in a direction parallel to the axial direction of the impeller (12).

16. The fan cleaning apparatus according to claim 15, wherein: the motion mechanism comprises a second driving mechanism (251) and a connecting rod (252), and the second driving mechanism (251) is a linear driving module; the plugging device (23) is fixedly arranged at the end part of the connecting rod (252) facing the volute (11); the output end of the second driving mechanism (251) directly or indirectly drives the connecting rod (252) to move, so that the connecting rod moves to the corresponding position of the yielding hole (114) to block the yielding hole (114) or leave the yielding hole (114).

17. The fan cleaning apparatus according to claim 16, wherein: the second driving mechanism (251) is an electric push rod, the cleaning mechanism (2) further comprises an installation support (24) used for fixing the second driving mechanism (251) and the fan system (1), a sliding groove (241) is formed in the installation support (24), the connecting rod (252) is in sliding fit with the sliding groove (241), the sliding groove (241) penetrates through two faces, close to and far away from the volute (11), of the installation support (24), and the connecting rod (252) penetrates through the sliding groove (241) from one side, close to the volute (11), of the installation support (24) and can move along the sliding groove (241).

18. The fan cleaning apparatus according to claim 17, wherein: the periphery of the connecting rod (252) is provided with a rolling bearing (253), the connecting rod (252) is connected with an inner ring of the rolling bearing (253), and the rolling bearing (253) is arranged in the sliding groove (241).

19. The fan cleaning apparatus according to claim 17, wherein: the second driving mechanism (251) is a hydraulic cylinder which comprises a cylinder body (2511) and a piston rod (2513); the plugging device (23) is fixedly arranged at the end part of the connecting rod (252) facing the volute (11);

a piston (2514) is arranged in the cylinder body (2511) to divide the cylinder body (2511) into a first chamber (25111) far away from the connecting rod (252) and a second chamber (25112) close to the connecting rod (252);

the piston rod (2513) is partially arranged in the second chamber (25112) and partially extends out of the cylinder body (2511) to be connected with the connecting rod (252), the piston rod (2513) is also connected with the piston (2514), a liquid inlet (25113) is formed in the side wall of the cylinder body (2511), the liquid inlet (25113) corresponds to the second chamber (25112) and can push the piston (2514) to move towards the direction far away from the connecting rod (252) so as to open the abdicating hole (114) when liquid enters, and the trend that the piston (2514) moves towards the connecting rod (252) is kept.

20. The fan cleaning apparatus according to claim 19, wherein: the hydraulic cylinder further includes a first resilient member (2512), the first resilient member (2512) being disposed in a first chamber (25111); the two ends of the first elastic piece (2512) are respectively connected with the piston (2514) and the wall surface of the cylinder (2511) at the end part of the first chamber (25111) far away from the piston (2514), so that the piston (2514) keeps the trend of moving towards the direction of the connecting rod (252).

21. The fan cleaning apparatus of claim 14, wherein: the plugging device (23) is provided separately from the cleaning medium supply pipe (22), and the plugging device (23) and the cleaning medium supply pipe (22) are linked to be movable in a direction parallel to the axial direction of the impeller (12).

22. The blower cleaning device of claim 21, wherein: the cleaning mechanism (2) further comprises a moving mechanism used for enabling the blocking device (23) and the cleaning medium supply pipe (22) to be linked, the moving mechanism comprises a connecting rod (252), a second elastic piece (255) and a first connecting rod (254), the blocking device (23) is fixedly arranged at the end part, facing the volute (11), of the connecting rod (252), one end of the second elastic piece (255) is fixed relative to the volute (11), and the other end of the second elastic piece is fixed with the connecting rod (252);

a track groove (224) is formed in one side, far away from the volute (11), of the cleaning medium supply pipe (22), one end of the first connecting rod (254) is slidably arranged in the track groove (224), the other end of the first connecting rod (254) is connected with the connecting rod (252), and two ends of the first connecting rod (254) can rotate relative to the connecting position.

23. The fan cleaning apparatus of claim 22, wherein: the cleaning mechanism (2) further comprises a mounting bracket (24) fixed with the fan system (1), a sliding groove (241) is formed in the mounting bracket (24), the connecting rod (252) is in sliding fit with the sliding groove (241), the sliding groove (241) penetrates through two faces, close to and far away from the volute (11), of the mounting bracket (24), and the connecting rod (252) penetrates through the sliding groove (241) from one side, close to the volute (11), of the mounting bracket (24); the mounting bracket (24) is provided with a fixing column (256), and the end part of the second elastic piece (255) is connected with the fixing column (256).

24. The fan cleaning apparatus of claim 22, wherein: the cleaning medium supply pipe (22) is driven by a first drive mechanism (21) to swing, and the cleaning medium supply pipe (22) and the track groove (224) are in concentric arc shapes extending in the same direction.

25. The fan cleaning device according to any one of claims 1 to 18, wherein: the cleaning medium supply pipe (22) is arc-shaped, and the cleaning medium supply pipe (22) is in transmission connection with the output end of the first driving mechanism (21), so that the cleaning medium supply pipe (22) is driven by the first driving mechanism (21) to swing.

26. The fan cleaning device according to any one of claims 1 to 24, wherein: the volute (11) comprises two cover plates (111) arranged at intervals and an annular wall (112) located between the two cover plates (111), and the abdicating hole (114) is formed in the annular wall (112).

27. A range hood, its characterized in that: use of a fan cleaning device according to any of claims 1 to 26.

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