CN210241952U

CN210241952U - Filter screen automatic cleaning equipment and air conditioner

Info

Publication number: CN210241952U
Application number: CN201920855848.0U
Authority: CN
Inventors: Zhenhai Chen; 陈镇海
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-04-03
Anticipated expiration: 2029-06-06

Abstract

The utility model discloses a filter screen self-cleaning equipment and air conditioner. This filter screen self-cleaning equipment includes: a cleaning device for automatically cleaning one or more filter screens and comprising a cleaning member, a first drive device and a second drive device; control means communicatively connected to the cleaning means and for controlling the cleaning member, the first drive means and the second drive means such that the second drive means drives one of the one or more filter webs to a predetermined position and the first drive means drives the cleaning member to move relative to the filter web at the predetermined position to clean the filter web.

Description

Filter screen automatic cleaning equipment and air conditioner

Technical Field

The utility model relates to a filter screen self-cleaning equipment and air conditioner.

Background

The air conditioner cools and heats a room by means of a compressor, a condenser, an evaporator, and an expansion device.

The air conditioner has a filter for filtering foreign objects contained in air sucked into the air conditioner, thereby purifying the air and protecting components of the air conditioner from the foreign objects.

The total amount of foreign objects accumulated on the filter increases as the filter age increases. Foreign objects accumulated on the filter cause clogging of the filter screen, disturbing the air flow through the air conditioner. This deteriorates the function of the air conditioner. Therefore, frequent cleaning is required.

Conventionally, the filter screen of an air conditioner has been cleaned manually. Clearly, manual cleaning is time consuming, cumbersome, and inefficient.

For this reason, air conditioners have been developed which automatically clean the filter of the air conditioner. For example, in the disclosed air conditioning apparatus, a ring-shaped roller-shaped screen, a driving device for making the screen annularly movable, and a screen cleaning member disposed beside the screen and in contact with the screen for cleaning are provided in front of and behind the vent. The air inlet surface of the filter screen is automatically cleaned by the cleaning component through the annular movement of the filter screen. In another disclosed air conditioner, a plate-shaped filter net and a moving guide rail for moving the filter net are arranged along the inner side of the air suction opening, and a cleaning device and a driving device for driving the filter net to move are arranged on the way of the moving guide rail. The movable guide rail is formed along the inner side surface of the air suction opening, and the end part of the movable guide rail is folded back in a U shape at the space part between the body and the heat exchanger arranged in the body. The whole air inlet surface of the filter screen is automatically cleaned in the cleaning part by making the filter screen reciprocate.

The existing automatic cleaning device only performs automatic cleaning for a single filter screen, and does not consider the case of two or more filter screens. In view of this situation, the utility model provides a can carry out self-cleaning's equipment to more than one filter screen.

In addition, the existing automatic filter screen cleaning apparatus is designed to sweep dust on the filter screen, which is sufficient for general air conditioners, but does not achieve a good effect for kitchen air conditioners. The oil smoke in kitchen is big, and air conditioner air-out grid blows in the cabin, inhales hot-air from the return air grid again, and the accumulation a large amount of oil stains in the air conditioner that so reciprocates to just clear up the dust of filter screen far away inadequately to kitchen air conditioner, still need one kind can clear up the self-cleaning device of dust and oil stain simultaneously.

SUMMERY OF THE UTILITY MODEL

A brief summary of the present invention is provided below in order to provide a basic understanding of some aspects of the present invention. It should be understood that this summary is not an exhaustive overview of the invention, and it is not intended to identify key or critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.

In view of the problem that proposes above, the utility model provides a filter screen self-cleaning equipment, include: a cleaning device for automatically cleaning one or more filter screens and comprising a cleaning member, a first drive device and a second drive device; control means communicatively connected to the cleaning means and for controlling the cleaning member, the first drive means and the second drive means such that the second drive means drives one of the one or more filters to a predetermined position and the first drive means drives the cleaning member to move relative to the filter at the predetermined position to clean the filter.

The utility model also provides an air conditioner, it contains above-mentioned filter screen self-cleaning equipment.

According to the utility model discloses filter screen self-cleaning equipment of embodiment can carry out self-cleaning to the filter screen in the air conditioner to can discern the pollution type of filter screen and clean in order to choose for use suitable mode.

These and other advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings.

Drawings

Other features and advantages of the present invention will be more readily understood from the following description of the various embodiments of the invention taken together with the accompanying drawings, which are presented herein for purposes of illustration only, and not of limitation, of the embodiments of the invention. In the drawings:

fig. 1 and 2 are schematic views showing an example of an air conditioner having a filter screen automatic cleaning apparatus according to an embodiment of the present invention.

Fig. 3 is a perspective view illustrating a filter screen automatic cleaning apparatus according to an embodiment of the present invention.

Fig. 4 is a perspective view showing the structure of the stopper mechanism according to the embodiment of the present invention.

Fig. 5 is a perspective view showing the structure of the lock member in the stopper mechanism.

Fig. 6 is a bottom view showing the structure of the lock member in the stopper mechanism.

Fig. 7 is a perspective view showing the structure of the upper column gear in the stopper mechanism.

Fig. 8 is a perspective view showing the structure of a link in the stopper mechanism.

Fig. 9 is a perspective view showing an internal structure of a rack in the link.

Fig. 10 is a perspective view showing the structure of the lower tooth post in the stopper mechanism.

Fig. 11 is a front view showing the structure of the lower column.

Fig. 12 is a perspective view showing the structure of a cleaning member in the automatic filter screen cleaning apparatus.

Fig. 13 is a schematic view showing a structure of the first cleaner in the cleaning member.

Fig. 14 is a schematic diagram showing the operation of the control device.

Detailed Description

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the following description is merely exemplary in nature and is not intended to limit the present disclosure. Further, in the following description, the same reference numerals will be used to refer to the same or like parts in different drawings. The different features in the different embodiments described below can be combined with each other to form further embodiments within the scope of the invention.

Fig. 1 and 2 are schematic views illustrating an air conditioner having a filter screen automatic cleaning apparatus according to an embodiment of the present invention.

The air conditioner shown in fig. 1 is assembled in a mounting cabinet 1. The installation cabinet 1 may be a cabinet placed in a kitchen or a cabinet for accommodating an air conditioner placed in an indoor space such as a living room, a bedroom, a bathroom, or the like. However, the air conditioner may be used alone without being mounted in the installation cabinet. As shown in fig. 1, the air conditioner includes an air conditioner cabinet 2, and an air outlet grill 3 and a control panel 4 are provided on a door panel of the air conditioner cabinet 2. An evaporator 5 and a condenser 6 are also arranged in the air-conditioning cabinet 2, and an inlet and an outlet of the evaporator 5 are respectively provided with an evaporator cold air return pipe 51 and an evaporator cold air outlet pipe 52; the inlet and outlet of the condenser 6 are provided with a condenser heat rejection return air duct 61 and a condenser heat rejection air duct 62, respectively. The evaporator cold air return pipe 51, the condenser heat exhaust return pipe 61 and the condenser heat exhaust pipe 62 are all disposed outdoors, and the evaporator cold air outlet pipe 52 is disposed at the air outlet grill 3, as shown in fig. 2. The outlet of the evaporator 5 is also provided with a backup cool air return duct 53, and the inlet and outlet of the condenser 6 are also provided with a backup condenser heat rejection return duct 63 and a backup condenser heat rejection duct 64, respectively.

In the air conditioner shown in fig. 1, the evaporator and the condenser are located indoors, and the cold air return pipe 51 of the evaporator, the heat exhaust return pipe 61 of the condenser and the heat exhaust pipe 62 of the condenser are all located outdoors, so that indoor air is prevented from entering the air conditioning circulation system, and accordingly, air with oil smoke is prevented from entering the air conditioner.

In the cooling mode of the air conditioner, the condenser 6 sucks air through the condenser heat exhaust return air duct 61 to radiate heat therefrom, and hot air having absorbed heat from the condenser 6 is discharged through the condenser heat exhaust air duct 62. The evaporator sucks air from the cold air return pipe 51 of the evaporator, the air exchanges heat with the evaporator, and cooled cold air is blown out from the cold air outlet pipe 52 of the evaporator, so that the indoor cooling effect is achieved.

Within cabinet 2, evaporator cold air return duct 51 is in air communication with backup cold air return duct 53 (e.g., via a duct disposed within cabinet 2), condenser heat rejection return duct 61 is in air communication with backup condenser heat rejection return duct 63 (e.g., via a duct disposed within cabinet 2), and condenser heat rejection duct 62 is in air communication with backup condenser heat rejection duct 64 (e.g., via a duct disposed within cabinet 2). When the indoor oil smoke is less, the indoor oil smoke is converted into a standby pipeline, indoor air is utilized for circulation, and energy is saved. When the standby cold air return pipe 53 is started, indoor air is sucked from the standby cold air return pipe 53 and then is discharged through the evaporator cold air outlet pipe 52; and when the backup condenser heat rejection return air duct 63 is activated, indoor air is drawn from the backup condenser heat rejection return air duct 63 and then discharged to the outside of the room via the condenser heat rejection air duct 62.

In addition, as shown in fig. 1, the evaporator 5 is further provided with a filter box 55 and a filter box 56, wherein the filter box 55 is disposed between the inlet of the evaporator 5 and the evaporator cold air return duct 51, and the filter box 56 is disposed between the outlet of the evaporator 5 and the standby cold air return duct 53. In addition, the condenser 6 is provided with a filter tank 65 and a filter tank 66, wherein the filter tank 65 is provided between the inlet of the condenser 6 and the condenser heat rejection return air duct 61, and the filter tank 66 is provided between the outlet of the condenser 6 and the backup condenser heat rejection return air duct 63.

The filter box is internally provided with a filter screen so as to filter the air sucked into the air conditioner, and the filter box can automatically clean the filter screen to ensure the operating efficiency of the air conditioner. Hereinafter, the filter box 55 will be described as an example, and the

other filter boxes

56, 65, and 66 have similar structures and will not be described again.

< case of two filters >

Fig. 3 is a perspective view of an example of the internal structure of a filter box (hereinafter also referred to as a filter screen automatic cleaning apparatus) including two filter screens.

The automatic filter screen cleaning equipment comprises a cleaning device and a control device. The cleaning device is used for automatically cleaning one or more filter screens and comprises a cleaning component, a first driving device and a second driving device; and control means for controlling the cleaning member, the first drive means and the second drive means such that the second drive means drives one of the one or more filter webs to a predetermined position and the first drive means drives the cleaning member to move relative to the filter web at the predetermined position to clean the filter web. The control means, which is not shown in fig. 3, may be provided in the apparatus of fig. 3 or outside the apparatus and may be communicatively connected with the cleaning means in a wired or wireless manner for controlling the various components in the cleaning means.

In one example, the first drive arrangement includes a first rail and a first motor that drives the cleaning member along the first rail under the control of the control arrangement. And the second driving device comprises a second motor and a second guide rail perpendicular to the first guide rail, and the second motor drives each filter screen to a preset position along the second guide rail under the control of the control device.

For example, in the example shown in fig. 3, the automatic filter screen cleaning apparatus 55 includes a housing including an upper housing 5501 and a lower housing 5502. The lower housing 5502 is formed by two partially quadrangular pyramids with opposite contraction directions and is hollowed out. The upper housing 5501 has a hollow rectangular parallelepiped shape. Two opposite side walls (hereinafter also referred to as a first side wall and a second side wall) of the upper housing 5501 are formed with through holes respectively communicating with an inlet of the evaporator 5 and the evaporator cool air return duct 51.

For convenience of explanation, hereinafter, as shown in fig. 3, the longitudinal direction of the sidewall having the through-hole is regarded as the x-direction, the width direction is regarded as the y-direction, and the thickness direction is regarded as the z-direction.

With continued reference to fig. 3, both ends of the second guide rail 5506 in the extending direction (z direction) are fixed to both side walls of the upper housing 5501, in which the through holes are opened, respectively, and a second polish rod 5514 opposite to the second guide rail is further fixed to both side walls so as to support the filter screen lower support 5509 together with the second guide rail. The first guide rail 5505 is mounted to the middle of the second guide rail 5506 in the extending direction (z direction), and the first polished rod 5513 is mounted at the middle of the second polished rod 5514 in the extending direction. The arrangement of the guide rail and the polished rod is not limited to the one shown in fig. 3, and for example, one guide rail and two polished rods may be provided to drive the lower support 5506. In addition, the first and

second guide rails

5505 and 5506 may be, for example, ball screws, and the first and second motors may be, for example, servo motors or stepping motors, but are not limited thereto, and those skilled in the art may use other types of guide rails and motors according to actual needs.

The automatic filter screen cleaning equipment further comprises a filter screen bracket for supporting the filter screen. The filter screen support includes an upper support for supporting an upper end of the filter screen and a lower support for supporting a lower end of the filter screen, and the lower support is mounted to one side of the second guide rail 5506 and can move along the second guide rail by the driving of the second motor, thereby moving the supported filter screen to a predetermined position. In the example of fig. 3, the filter screen lower 5509 is mounted on the second guide rail 5506 and the second polish rod 5514, and the filter screen upper 5508 is mounted to the first and second side walls of the housing where the through holes are opened. The filter net support 5508 is provided with a locking device, which is unlocked when a cleaning operation is started (for example, the locking device in fig. 3 is unlocked)

The upper bracket is moved away from the upper end of the filter screen along the x direction), thereby allowing the lower bracket to move to a preset position with the filter screen; and the locking means locks (e.g. in fig. 3) when the cleaning operation is completed and the filter screen returns to the working position

The upper bracket moves in the negative x direction and engages the upper end of the filter screen), thereby fixing the position of the filter screen.

In addition, another locking device may be provided on the lower frame 5509 to unlock the lower frame when starting cleaning and lock the lower frame (or the filter net) when it returns to the working position, thereby fixing the filter net. This further locking means can be implemented by means customary in the art and will not be described in detail here. Alternatively, in the case where the second guide rail employs a ball screw, the position of the lower bracket may be restricted by employing a motor that cannot be reversed by itself; or both may be used simultaneously or other techniques known in the art.

The cleaning apparatus further includes a stopper member that restrains the filter screen at a predetermined position at the time of cleaning and releases the restraint when the cleaning is completed. A stop member is installed at the middle of the second guide rail 5506, and preferably, another stop member is also installed at the middle of the second polished rod 5514.

The stop member includes a body 5507 and a nose 5512 mounted to a cleaning member 5510 (to be described below). The main body is mounted to the second guide rail 5506 on the side opposite to the side on which the lower bracket is mounted.

Fig. 4 shows a schematic view of the internal structure of the main body 5507 of the stopper mechanism.

The main body 5507 of the stopper mechanism includes a housing and, as shown in fig. 4, two push type retracting mechanisms. This telescopic machanism includes upper tooth post 5507a, lock 5507b, link 5507c, lower tooth post 5507d, spring 5507e and base 5507 f.

Fig. 5 and 6 show a schematic view of the structure of the lock 5507b, where fig. 5 is a perspective view of the lock and fig. 6 is a bottom view of the lock. As shown in fig. 5, the locking member is generally cylindrical, and has: guide grooves 5507b1 and 5507b 1' which cooperate with guide ribs in the lower tooth post 5507 b; and a helical tooth 5507b2, one flank of which guides the lead rib to the tooth root and locks the lead rib at the tooth root, and the other flank of which guides the lead rib into the guide groove. In the example of fig. 5, three guide grooves and three helical teeth are provided on the cylinder wall of the lock member at equal intervals in the circumferential direction, but the number of the guide grooves and the helical teeth is not limited thereto, and more or fewer guide grooves and helical teeth may be provided according to actual needs. As shown in fig. 6, one of the three guide grooves 5507b1 'extends through the cylinder wall of the locking element for receiving a toothed block 5507a 2' to which a toothed rack 5507c1 is connected.

Fig. 7 is a perspective view showing the structure of the upper column 5507 a.

The upper toothed column 5507a includes a column 5507a1 and blocks 5507a2 and 5507a 2'. One end of the cylinder is hemispherical, and as shown in fig. 3, the hemispherical end protrudes from the second guide rail through a through hole (not shown) on the second guide rail 5506, and the outer diameter of the cylinder is smaller than the inner diameter of the locking member. The blocks are attached to the periphery of the cylinder 5507a1 and triangular teeth on the blocks protrude from the cylinder and the blocks are arranged equally spaced circumferentially. Most of the tooth blocks 5507a2 are disposed at an end of the cylinder opposite the hemispherical end, and the tooth block 5507a 2' with the rack 5507c1 attached thereto extends to the hemispherical end in the axial direction of the cylinder 5507a 1. The number of the tooth blocks is the same as that of the guide grooves and the helical teeth. In addition, the tooth block may be integrally formed with the cylinder or may be fixed to the cylinder by a fastener such as a countersunk bolt.

Here, the hemispherical end is merely illustrative, and the cylindrical end may be provided in other shapes such as a conical shape and the like.

Fig. 8 shows a perspective view of the structure of the link 5507 c.

The linkage 5507c includes a rack 5507c1, a gear 5507c2, and a ratchet mechanism 5507c 3.

Fig. 9 shows a perspective view of the internal structure of the rack 5507c 1. As shown in fig. 4 and 9, the rack 5507c is attached to a block 5507a 2' and includes a housing c10 (only one side wall of the housing is shown in fig. 9), a helical gear body c11, a spring c13, a spring seat c14, and a groove c12 on the side wall. Grooves c12 are provided on two opposite side walls of the housing, shaft holes are provided on the helical tooth body c11 (preferably at the center or center of gravity), and the helical tooth body is rotatably supported via shafts passing through the shaft holes and fixed to two opposite side walls of the housing. At one end of the helical gear body c11, projections c15 are provided on both sides adjacent to the two opposite side walls, and the projections c15 are placed in the corresponding grooves and can move along the grooves. The other end of the helical gear body c11, at which the teeth are provided, protrudes from the housing so as to mesh with the gear 5507c 2. The moving range of the skewed tooth body can be limited by designing the shape of the groove. The spring seat c14 is fixed to the housing and serves to support the spring c 13. A spring is attached to the end of the skewed tooth body to hold the skewed tooth body in an upper position, as shown in figure 9, defined by the shape of the recess, without the application of an external force. When the rack 5507c1 moves in the direction opposite to the x-axis shown in the figure, the lower tooth surface of the helical tooth body contacts with the gear 5507c2, and the helical tooth body is kept at the upper limit position by the reaction force of the gear. When the rack 5507c1 moves in the x direction, the upper tooth surface of the helical tooth body contacts with the gear 5507c2, and when the reaction force of the gear is larger than the pulling force of the spring c13, the convex c15 moves along the concave groove, and the tooth part is gradually stored into the housing as the reaction force of the gear increases. The upper tooth surface of the final helical tooth body slides over the gear 5507c1 without jamming with the gear. In the process, due to the action of the ratchet mechanism 5507c3, the gear 5507c2 only transmits motion when the rack moves in the negative x direction, but cannot rotate in the positive x direction.

As shown in fig. 4 and 8, the ratchet wheel in the telescoping mechanism on the left in the figures allows the gear to rotate counterclockwise and blocks clockwise rotation, and the ratchet wheel in the telescoping mechanism on the right allows the gear to rotate clockwise and blocks counterclockwise rotation. Therefore, the motion of any upper tooth column along the negative x direction can be transmitted to the other upper tooth column, and the motion of any upper tooth column along the x direction cannot be transmitted. Therefore, no clamping teeth can be generated between the rack and the gear and between the gear and the gear.

Fig. 10 is a perspective view showing the structure of the lower column 5507 d. Fig. 11 is a front view showing the structure of the lower column 5507 d.

As shown in fig. 10, the lower column gear includes an upper cylinder 5507d1 and a lower cylinder 5507d 2. The upper cylinder 5507d1 is cylindrical in shape with one end attached to the lower cylinder and the other end provided with triangular teeth. The lower cylinder is also cylindrical and has an outer diameter larger than that of the upper cylinder. One end of the lower cylinder body is opened, and the other end is provided with a bottom wall. The outside of diapire is provided with the direction muscle with guide way complex. The guide ribs are arranged on the periphery of the upper cylinder and attached to the outer surface of the upper cylinder, and the guide ribs are spaced at equal intervals. The number of the guide ribs is the same as that of the guide grooves, one end of each guide rib is connected to the outer side of the bottom wall, and the other end of each guide rib is an inclined surface which is flush with one tooth surface of the triangular tooth on the upper barrel body, as shown in fig. 11.

Here, the outer diameter of the upper cylinder 5507d1 is smaller than the inner diameter of the lock 5507b, but larger than the outer diameter of the post 5507a1 so that the gear blocks 5507a2 can contact the triangular teeth on the upper cylinder 5507d 1.

With continued reference to fig. 4, a spring 5507e is positioned between the lower cylinder 5507d1 and the base 5507 f. The base 5507f has a cylindrical shape and has one end opened and the other end having a bottom wall. One end of the spring 5507e is fixed to the bottom wall thereof through the open end of the base 5507f, and the other end of the spring 5507e passes through the open end of the lower cylinder 5507d1 to contact the bottom wall of the lower cylinder 5507d1 and enable the lower cylinder 5507d1 to rotate relative to the spring 5507 e.

Preferably, the other end of the spring 5507e is in rolling contact with the bottom wall of the lower cylinder 5507d 1. For example, the other end of the spring 5507e may be fixed to a circular plate having an outer diameter smaller than the inner diameter of the lower cylinder 5507d1, and rolling contact is achieved between the circular plate and the bottom wall of the lower cylinder 5507d1 by a ball embedded in the bottom wall or the circular plate; or the circular plate and the bottom wall of the lower cylinder 5507d1 are in rolling contact through a plate with balls, and the plate is provided with through holes and the balls are installed in the through holes.

The operation of the stopper member is described below with reference to fig. 4 to 11. Specifically, the stop member is operated to:

in the unactuated state of the stop member, the bulbous extremities of the cylinders in the two telescopic mechanisms protrude from the side of the second rail on which the lower bracket is mounted, through two holes in the second rail. At this point, the guide rib is locked at the root of the tooth 550762 of the lock 5507 b.

-the stop member is triggered as the lower carriage moves, when it contacts and presses either of the bulbous ends, after the lower carriage passes and releases the pressed bulbous end, both posts have sprung out so as to constrain the lower carriage between the two posts. Here, as the ball tip is gradually pressed, the tooth blocks 5507a2 and 5507a 2' first come into contact with the tips of the triangular teeth on the upper cylinder 5507d1 and gradually slide toward the roots of the teeth. In the process, the guide rib is withdrawn from the tooth root and slides along the other flank of the helical tooth 5507b2 on the locking member 5507 b. When the pressing is released, the guide rib eventually slides into the guide groove of the lock 5507 b.

As the cleaning member moves along the first rail to the vicinity of the second rail, the nib 5512 starts to press the hemispherical end of the cylinder; as the cleaning member moves, the hemispherical tip is pressed further and the entire cylinder is retracted into the housing of the main body 5507; after the nose 5512 is removed, the hemispherical tip protrudes from one side of the second rail, so that the stop mechanism enters the unactuated state. Here, when the nose 5512 is in contact with and pressed against the hemispherical end, the tooth block 5507a2 is in contact with and pressed against the guide rib until it exits the guide groove, at which time the guide rib slides towards one of the flanks of the oblique teeth 5507b2 of the lock 5507b, guided by the flanks of the tooth block 5507a 2; when the nose 5512 is moved away from the ball end and the pressing is released, the guide rib slides along the one tooth surface to the root of the skewed tooth 5507b2, thereby locking the guide rib.

The construction and operating principle of the stop mechanism are described above. However, in the case where the ball screw is used for the second guide rail, the stopper mechanism may not be provided, and the position of the lower bracket may be restricted by using a motor which cannot be reversed by itself.

The configuration of the cleaning member is specifically described below.

As shown in fig. 3, when not cleaned, the cleaning member is accommodated in the storage portion 5511 to prevent the cleaning member from being contaminated. Referring to fig. 3 and 12, the cleaning member includes two cleaning portions 5510a, two support arms 5510b, and a rotation shaft 5510 c.

One of the two support arms 5510b is mounted to the first guide 5505 and the other is mounted to the first polished rod 5513. The two supporting arms can respectively move along the first guide rail and the first polished rod so as to move the cleaning part to clean the filter screen at the preset position. Two rotation shafts 5510c are installed between the two support arms, cleaning portions 5510a are respectively installed on the rotation shafts 5510c, and the cleaning portions 5510a can rotate around the respective rotation shafts 5510 c.

The cleaning portion 5510a is provided with a first cleaner for cleaning oil stains and a second cleaner for sweeping dust. Alternatively, the cleaning portion 5510a may include only the first cleaner or the second cleaner.

The first cleaner and the second cleaner are respectively disposed on opposite sides of the cleaning portion.

In one example, the first cleaner includes a water spray part and a first cleaning brush distributed on one side of the cleaning part. Fig. 13 is a schematic view showing the positions of the water spray part and the first cleaning brush. As shown in fig. 13, the water spray portion includes a plurality of nozzles, and is disposed in front of the first cleaning brush. The first cleaning brush includes a plurality of rotating brush heads, each of which is capable of rotating about its own axis of rotation. Because the nozzle is arranged in front of the rotary brush head, when the filter screen is cleaned, the nozzle in front firstly washes the filter screen to wet the filter screen and take away part of dirt; then the filter screen is scrubbed by the rotary brush at the rear part so as to further take away the strongly adhered dirt. The liquid sprayed from the nozzle can be water or cleaning liquid added with a specific cleaning agent, and the water or the cleaning liquid sprayed on the filter screen can soften a part of the strongly adhered stains, so that the rotating brush is facilitated to scrub off the strongly adhered stains.

In the case where the first cleaner includes the water spray part and the first cleaning brush, the cleaning device further includes a water storage device, a water supply pump, and a recovery part (not shown in the drawings). The water spraying part is connected with the water storage device and the water supply pump, and water in the water storage device is conveyed to the water spraying part and then sprayed out of the nozzle under the action of the water supply pump. Preferably, the control means is capable of controlling the water supply pump to adjust the pressure of the water ejected from the nozzle.

The second cleaner includes second cleaning brushes distributed on a side of the cleaning portion opposite to the side on which the first cleaner is disposed. At this time, the cleaning device further includes a dust suction unit, a dust separation unit, and a dust storage (not shown in the drawings). The dust suction unit is used for sucking the dust swept by the second cleaning brush, the dust separation unit is used for separating the dust in the sucked air from the air, and the dust storage part is used for storing the separated dust.

As shown in fig. 3, the lower housing 5502 includes two passages 5502a (first sewage passage) and 5502b (second sewage passage). The passage 5502a communicates with the recovery part, and the passage 5502b communicates with the dust suction unit, the dust separation unit, and the dust storage part. In the operating state, the duct 5502a is opened and the duct 5502b is closed, and at this time, oil stain, dust, and the like dropped from the filter screen 5504 flow out to the outside of the housing or the recovery portion via the duct 5502 a.

When the filter screen is cleaned by the first cleaner, the path 5502a is opened and the path 5502b is closed, and the sewage and dirt generated when the filter screen is cleaned flows out from the path 5502a to the recovery part by gravity.

When the filter screen is cleaned by the second cleaner, the path 5502a is closed and the path 5502b is opened, so that the dust separated from the filter screen is sucked into the path 5502b by the dust suction unit, and the dust separation unit separates the dust in the sucked gas from the air and collects the dust into the dust receiving part. Preferably, the dust receiving part is filled with water so as to be mixed with the collected dust, and the dust is prevented from falling around.

Preferably, as shown in fig. 3, the cleaning device further includes two roll screens 5503 mounted to the outside of the storage portion 5511. The roller shade is communicatively coupled to the control device. When the filter net is moved to a predetermined position and the filter net is ready to start cleaning, the rolling shutter is opened under the control of the control means to separate the filter net to be cleaned from other filter nets, thereby preventing dirt during cleaning from being splashed onto the other filter nets. And when the cleaning is completed, the control device firstly rolls up the roller shutter and then moves the filter screen.

Here, the cleaning member performs cleaning when moving in the negative x direction, and does not perform cleaning when moving in the x direction. Alternatively, a stopper that fixes the upper end of the filter net in the x direction may be provided on the first guide rail, and two rows of the heads may be provided at both ends of the rotary brush, thereby allowing the cleaning member to perform cleaning while being able to move in the x direction.

In addition, the cleaning device also comprises a monitor for monitoring the pollution type and the pollution degree of the filter screen. The monitor is connected to the control device and transmits the type and level of contamination monitored to the control device when the level of contamination reaches a predetermined threshold. The monitor can monitor the filter screen all the time; or monitoring may be performed periodically (e.g., daily, weekly, monthly, etc.). For example, the monitoring period of the monitor may be set manually, and the monitor performs monitoring according to the monitoring period set manually.

In the present example, the contamination type may include, but is not limited to, dust contamination and oil stain contamination, for example, and accordingly, the contamination level refers to the thickness of dust or the thickness of oil stain covered on the filter screen. Here, the contamination in which only dust is accumulated on the filter net is referred to as dust contamination, and the contamination in which dust and oil are accumulated is referred to as oil stain contamination.

In one example, a monitor includes an image acquisition unit and an evaluation unit. The image acquisition unit takes a picture of the filter screen and transmits the taken picture to the evaluation unit. The image acquisition unit may employ a camera or a video camera, for example. The evaluation unit includes an identification section and a determination section. After receiving the shot picture, the identification part identifies the picture to determine the pollution type and the pollution degree of the filter; then, the determination section determines whether or not the degree of contamination reaches a predetermined threshold value, and when it is determined that the threshold value is reached, the evaluation unit transmits data of the type of contamination and the degree of contamination to the control device. The recognition portion may be implemented, for example, using a deep neural network. At this point, the monitor is adapted to periodically monitor the filter web for contamination data.

Alternatively, the evaluation unit includes a contamination type identification section, a contamination degree identification section, and a determination section. The contamination type identification section is used to identify the contamination type of the filter screen, i.e., whether it is dust contamination or oil contamination, and may be implemented using, for example, a deep neural network. The pollution degree identification part is used for identifying the pollution degree of the filter screen. The pollution degree identification part can detect the pollution degree of the filter screen by detecting the change of voltage, resistance, capacitance and the like at two ends of the filter screen; or the contamination level identifying section may detect the contamination level by detecting a change in the optical signal transmitted through the filter. At this time, the contamination degree recognition portion may constantly monitor the contamination degree data of the filter net, and the determination portion may trigger the contamination type recognition portion to recognize the contamination type when the data is determined to reach the predetermined threshold value, and then the evaluation unit may transmit the obtained contamination degree and contamination type data to the control device.

The operation of the control device in the automatic filter screen cleaning apparatus will be described with reference to fig. 14.

As shown in fig. 14, the control device is configured to execute the following operation steps S1401 to S1405. In step S1401, the control apparatus receives contamination data, which includes contamination level data and contamination type data, of which contamination level reaches a predetermined threshold value from the monitor. In step S1402, based on the contamination type data, the first cleaner or the second cleaner is selected to perform cleaning, and the corresponding first trapway or second trapway is selected. In step S1403, based on the contamination level data, cleaning parameters such as the number of times of cleaning, the water pressure of water supplied from the water supply pump, the rotation speed of the rotary brush, and the like are set. In step S1404, operation of the second motor is controlled to drive the filter screen to a predetermined position along the second track. In step S1405, controlling operation of the first motor to move the cleaning member along the first rail; and simultaneously controlling each cleaning part to perform cleaning according to the set cleaning parameters.

In addition, the control device is further configured to: when the number of times of cleaning is set to two or more times, the first motor is controlled so that the bosses on the cleaning member do not come into contact with the hemispherical ends of the stopper mechanism before the last cleaning is performed.

Furthermore, the control device is configured to control the roller shutter to open after the filter screen is driven to the predetermined position, and then to control the first motor and the cleaning section.

Also, the control device is configured to control the locking device to lock or unlock the support on the filter net.

And the control device is configured to control the other locking device to lock or unlock the lower bracket of the filter screen.

The case where two filter screens are accommodated in the automatic filter screen cleaning apparatus has been described above with reference to fig. 3 to 14, but the number of filter screens is not limited thereto, and the automatic filter screen cleaning apparatus may accommodate one or more than three filter screens. The following describes the configuration of the apparatus and its operation in which three or more filters are accommodated.

< case of three or more filters >

When three or more filter screens are accommodated in the automatic filter screen cleaning device, the other filter screen upper holders may be attached to the other side walls of the housing, or all the filter screen upper holders may be attached to the other side walls, in addition to the filter screen upper holders adjacent to the first and second side walls. Alternatively, two cross members may be mounted on two opposite side walls of the housing, and an upper bracket may be fixed to the cross members, thereby fixing the upper end of the filter screen. However, the mounting manner of the upper bracket is not limited thereto, and those skilled in the art may adopt other manners according to actual needs.

In this embodiment, the cleaning member may be located between the first filter and the second filter, and the cleaning member cleans the first filter and then cleans the remaining filters; or the cleaning member may be located between the penultimate filter web and the cleaning member cleans the penultimate filter web before cleaning the remaining filter webs. Alternatively, it is also possible to fix the position of the filter screen and to enable the first guide rail to move along the second guide rail, thereby moving the cleaning member to the position of the filter screen to clean the filter screen.

The operation of other components in the automatic cleaning device for the filter screen is the same as that of the two filter screen embodiments, and the detailed description is omitted here.

The foregoing description of various embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be limiting. It should be noted that in the above description, features described and/or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, in combination with or instead of the features of the other embodiments. It will be understood by those skilled in the art that various changes and modifications may be made to the above-described embodiments without departing from the inventive concept of the present invention, and such changes and modifications are intended to be included within the scope of the present invention.

To sum up, in the embodiment according to the utility model discloses, the utility model provides a following technical scheme.

Scheme 1. a filter screen self-cleaning equipment includes:

a cleaning device for automatically cleaning one or more filter screens and comprising a cleaning member, a first drive device and a second drive device;

control means communicatively connected to the cleaning means and for controlling the cleaning member, the first drive means and the second drive means such that the second drive means drives one of the one or more filters to a predetermined position and the first drive means drives the cleaning member to move relative to the filter at the predetermined position to clean the filter.

Scheme 2. the automatic filter screen cleaning apparatus according to scheme 1, wherein,

the first driving device comprises a first guide rail and a first motor, and the first motor drives the cleaning component to move along the first guide rail under the control of the control device; and

the second driving device comprises a second guide rail and a second motor, wherein the second guide rail is perpendicular to the first guide rail, and the second motor drives each filter screen to the preset position along the second guide rail under the control of the control device.

Scheme 3. the automatic filter screen cleaning apparatus according to scheme 2, wherein,

the cleaning member includes two cleaning portions, and is mounted on the first guide rail: as the cleaning member moves along the entire first guide track, one of the pair of cleaning portions sweeps across a first surface of the filter screen and the other cleaning portion sweeps across a second surface of the filter screen opposite the first surface.

Scheme 4. the automatic filter screen cleaning apparatus according to scheme 3, wherein,

the cleaning portion includes a first cleaner for cleaning oil stains.

Scheme 5. the automatic filter screen cleaning device according to scheme 4, wherein,

the first cleaner includes a water spray part and a first cleaning brush.

Scheme 6. the automatic filter screen cleaning apparatus according to scheme 5, wherein,

the cleaning device further comprises a water storage device, a water supply pump and a recovery part.

The filter screen automatic cleaning apparatus according to any one of the aspects 7, 6, wherein,

the cleaning part includes a second cleaner for sweeping dust.

Scheme 8. the automatic filter screen cleaning apparatus according to scheme 7, wherein,

the second cleaner is a second cleaning brush.

Scheme 9. the automatic filter screen cleaning apparatus according to scheme 8, wherein,

the cleaning apparatus further includes a dust suction unit and a dust separation unit.

Scheme 10. the automatic cleaning device for filter screen according to scheme 9, further comprising a housing, which includes:

an upper housing that houses the cleaning member, the first drive device, and the second drive device;

a lower housing including a first trapway connected to the recovery portion and a second trapway connected to a dust suction unit and a dust separation unit.

Scheme 11. the automatic filter screen cleaning apparatus according to any one of schemes 1 to 10, further comprising:

and a filter screen bracket for supporting the filter screen and including an upper bracket for fixing an upper end of the filter screen and a lower bracket for fixing a lower end of the filter screen, the lower bracket being mounted to one side of the second guide rail and being movable along the second guide rail by the driving of the second motor so as to move the supported filter screen to a predetermined position, the upper bracket being fixed to the housing.

Solution 12. the automatic filter screen cleaning apparatus according to solution 11, wherein,

a locking device is installed in the upper bracket, and when cleaning operation is performed, the control device controls the locking device to unlock the upper bracket so as to release the restraint on the upper end of the filter screen; when the cleaning operation is completed and the upper bracket returns to the working position, the control means controls the locking means to lock the upper bracket to restrict the movement of the upper end of the filter net.

Solution 13. the automatic filter screen cleaning apparatus according to solution 12, wherein,

the lower bracket is internally provided with another locking device, and the control device controls the other locking device to unlock the lower bracket when cleaning operation is performed so that the lower bracket can move along the second guide rail under the driving of the second motor; when the cleaning operation is completed and the lower bracket returns to the working position, the control device controls the other locking device to lock the lower bracket to restrict the movement of the lower bracket.

Scheme 14. the automatic filter screen cleaning apparatus according to scheme 11, wherein,

the cleaning apparatus further includes a stopper member that restrains the filter screen at a predetermined position when cleaning and releases the restraint when cleaning is completed.

Solution 15. the automatic filter screen cleaning apparatus according to solution 14, wherein,

the stopper member includes a main body and a boss mounted to the cleaning member, the main body is mounted to the other side of the second rail, the other side being opposite to the side on which the lower bracket is mounted, and the main body includes two push type telescopic mechanisms, the telescopic mechanisms include a cylinder and are configured to:

in the state that any telescopic mechanism is not triggered, the tail ends of the two columns penetrate through the two holes in the second guide rail and protrude out of one side of the second guide rail;

with the movement of the lower support, when the lower support contacts and presses the tail end of any one column, the two telescopic mechanisms are triggered, and one column with the tail end not pressed pops out;

when the lower support passes through and releases the pressed column at the tail end, the other pressed column at the tail end is ejected, so that the lower support is restrained between the two columns; and

the nose begins to depress a post as the cleaning member moves along the first rail to the vicinity of the second rail, and the post is further depressed and eventually enters an unactuated state as the cleaning member moves.

Solution 16. the automatic filter screen cleaning apparatus according to solution 15, wherein,

the telescopic mechanism comprises:

an upper tooth column including the cylindrical cylinder, one end of which is hemispherical and the other end of which is open, and a plurality of first and second tooth blocks attached to the periphery of the cylinder and arranged at equal intervals and having their teeth protruding from the open end of the cylinder, the first tooth blocks being distributed at the open end of the cylinder and the second tooth blocks being distributed over the entire shaft of the cylinder except for the hemispherical end;

the locking piece is cylindrical and comprises a plurality of first guide grooves, a second guide groove and oblique teeth at one end of the locking piece, the sum of the number of the first guide grooves and the number of the second guide grooves is equal to the sum of the number of the first tooth blocks and the number of the second tooth blocks, the first tooth blocks are arranged in the first guide grooves, the second tooth blocks are arranged in the second guide grooves, and the locking piece is sleeved on the periphery of the upper tooth column so that the hemispherical end portion extends out of the other end of the locking piece;

the lower tooth column comprises an upper cylindrical body and a lower cylindrical body which are cylindrical, one end of the upper cylindrical body is attached to the lower cylindrical body, triangular teeth are arranged on the end face of the other end of the upper cylindrical body, one end of the lower cylindrical body is opened, the other end of the lower cylindrical body is provided with a bottom wall used for being connected with one end of the lower cylindrical body, guide ribs matched with the guide grooves are distributed on the periphery of the bottom wall, the guide ribs are attached to the periphery of the upper cylindrical body, one end of each guide rib is connected with the bottom wall, and the other end of each guide rib is provided;

a spring, one end of which is fixed to the bottom wall of the base, the other end of which is in contact with the bottom wall of the lower cylinder, and the lower cylinder can rotate relative to the spring;

a base which is cylindrical and is used for bearing one end of a spring;

a linkage comprising a rack attached to the second block and a gear engaged with the rack and for transferring motion between the two telescoping mechanisms.

The filter screen automatic cleaning apparatus according to claim 16, wherein,

a ratchet mechanism is attached to the gear such that the linkage transmits only unidirectional motion.

Scheme 18. the automatic filter screen cleaning apparatus according to scheme 17, wherein,

the rack comprises a shell, a skewed tooth body, a spring and a spring seat,

two opposite side walls of the shell are provided with grooves,

the skewed tooth body is arranged on two side walls of the shell through a shaft penetrating through the skewed tooth body and can rotate around the shaft, one end of the skewed tooth body is a tooth part, two opposite side surfaces of the other end, which are close to the two side walls, are provided with bulges, the bulges extend into the grooves to limit the rotating range of the skewed tooth body,

a spring fixed to the spring seat is connected to the other end of the helical gear body so as to hold the helical gear body at an upper limit position in the rotation range when the rack gear is not engaged with the pinion gear.

The filter screen automatic cleaning apparatus according to claim 16, wherein,

the other end of the spring is in rolling contact with the bottom wall of the lower cylinder body.

Scheme 20. the automatic filter screen cleaning apparatus according to any one of schemes 1 to 10, wherein,

the cleaning device further includes a receiving portion for receiving the cleaning member when the cleaning operation is not performed, to prevent the cleaning member from being contaminated.

Scheme 21. the automatic filter screen cleaning apparatus according to scheme 20, wherein,

the cleaning device further comprises a rolling curtain which is installed to the outer side of the receiving part and is put down when a cleaning operation is performed to prevent dirt from contaminating other filter screens during the cleaning process; and is rolled up when the cleaning operation is not performed.

Scheme 22. the automatic filter screen cleaning apparatus according to any one of schemes 1 to 10, further comprising:

and a monitor for monitoring a contamination type and a contamination level of the filter net and transmitting contamination data on the contamination type and the contamination level to the control device when the contamination level is greater than a predetermined threshold value.

Scheme 23. the automatic filter screen cleaning apparatus according to scheme 22, wherein,

the monitor comprises:

an image acquisition unit that takes a picture of the filter screen and transmits the taken picture to the evaluation unit;

an evaluation unit including a recognition portion that recognizes a degree of contamination and a type of contamination of the filter screen based on the picture, and a determination portion that determines whether the degree of contamination is greater than a predetermined threshold value;

and the transmitting unit is used for transmitting corresponding pollution data to the control device when the pollution degree is greater than the preset threshold value.

Scheme 24. the automatic filter screen cleaning apparatus according to scheme 23, wherein,

the identifying part is realized by a deep neural network.

Solution 25. the automatic filter screen cleaning apparatus according to solution 23, wherein,

the identification part comprises a pollution degree identification part for identifying the pollution degree and a pollution type identification part for identifying the pollution type, the pollution type identification part is realized through a deep neural network, and the pollution degree identification part identifies by measuring the change of physical parameters at two sides of the filter screen.

Solution 26. the automatic filter screen cleaning apparatus according to solution 23, wherein,

the physical parameters include electrical parameters and optical parameters.

The filter screen automatic cleaning apparatus according to the claim 26, wherein,

the control device is configured to perform the following operations:

receiving contamination data from the monitor for which a degree of contamination reaches the predetermined threshold;

selecting either the first cleaner or the second cleaner to perform cleaning based on a type of contamination, and selecting either the first trapway or the second trapway, respectively;

setting cleaning parameters based on the degree of contamination;

controlling operation of the second motor to drive the filter screen to the predetermined position along the second track;

controlling operation of the first motor to move the cleaning member along the first rail while controlling the respective cleaning portions to perform cleaning with the set cleaning parameters.

Scheme 28. the automatic filter screen cleaning apparatus according to scheme 27, wherein,

the cleaning parameters include the number of times of cleaning, the water pressure of the water supplied from the water supply pump, and the rotation speed of the rotary brush.

Scheme 29. an air conditioner, which contains the automatic filter screen cleaning equipment of any one of schemes 1 to 28.

Claims

1. An automatic cleaning device for a filter screen, comprising:

2. The filter screen automatic cleaning apparatus according to claim 1,

the second driving device comprises a second motor and a second guide rail perpendicular to the first guide rail, and the second motor drives each filter screen to the preset position along the second guide rail under the control of the control device.

3. The filter screen automatic cleaning apparatus according to claim 2,

4. The filter screen automatic cleaning apparatus according to claim 3,

the cleaning portion includes a first cleaner for cleaning oil stains.

5. The filter screen automatic cleaning apparatus according to claim 4,

the first cleaner includes a water spray part and a first cleaning brush.

6. The filter screen automatic cleaning apparatus according to claim 5,

7. The filter screen automatic cleaning apparatus according to claim 6,

the cleaning part includes a second cleaner for sweeping dust.

8. The filter screen automatic cleaning apparatus according to claim 7,

the second cleaner is a second cleaning brush.

9. The filter screen automatic cleaning apparatus according to claim 8,

10. An air conditioner comprising the automatic filter screen cleaning apparatus according to any one of claims 1 to 9.