CN110145858B

CN110145858B - Filter screen self-cleaning equipment and air conditioner

Info

Publication number: CN110145858B
Application number: CN201910495584.7A
Authority: CN
Inventors: 陈镇海
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2024-05-10
Anticipated expiration: 2039-06-06
Also published as: CN110145858A

Abstract

The invention discloses automatic filter screen cleaning equipment and an 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; and a control device communicatively connected with the cleaning device and configured to control the cleaning member, the first drive device, and the second drive device such that the second drive device drives one of the one or more filter screens to a predetermined position and the first drive device drives the cleaning member to move relative to the filter screen at the predetermined position to clean the filter screen.

Description

Filter screen self-cleaning equipment and air conditioner

Technical Field

The invention relates to an automatic filter screen cleaning device and an 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 out 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 with the time of use of the filter. Foreign objects accumulated on the filter cause the filter screen to clog, disrupting the air flow through the air conditioner. This deteriorates the function of the air conditioner. Therefore, frequent cleaning is required.

Conventionally, cleaning of a filter screen of an air conditioner is often performed manually. Obviously, manual cleaning is time consuming, cumbersome, and has a relatively low cleaning efficiency.

For this reason, air conditioning apparatuses have been developed that automatically clean the filter of an air conditioner. For example, in the disclosed air conditioner, an endless roller-shaped screen, a drive device for moving the screen in an endless manner, and a screen cleaning member for cleaning by being adjacent to and in contact with the screen are provided in front of and behind the vent. The filter screen moves annularly, so that the cleaning part automatically cleans the air inlet surface of the filter screen. In the air conditioner disclosed in the other application, a plate-shaped filter screen and a moving guide rail for moving the filter screen are arranged along the inner side of the suction inlet, and a cleaning device and a driving device for driving the filter screen 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 inlet, and the end part of the movable guide rail is formed by turning back in a U shape at the space part between the body and the heat exchanger arranged in the movable guide rail. And the cleaning part automatically cleans the whole air inlet surface of the filter screen by reciprocating the filter screen.

Existing automatic cleaning devices automatically clean only for a single filter screen, without considering the case of two or more filter screens. In view of this situation, the present invention proposes a device capable of automatically cleaning 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 a general air conditioner, but cannot achieve a good effect for a kitchen air conditioner. The kitchen oil smoke is big, and air conditioner air-out grid blows in the cabin, inhales the hot air from the return air grid again, and the accumulation of a large amount of oil stain in the reciprocating air conditioner so to only clear up the dust of filter screen far enough for the kitchen air conditioner, still need an automatic cleaning device that can clear up dust and oil stain simultaneously.

Disclosure of Invention

The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention, it is not intended to identify key or critical elements of the invention or to delineate the scope of the invention. Its 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 above-mentioned problems, the present invention provides an automatic filter screen cleaning device, comprising: 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; and a control device communicatively connected to the cleaning device and configured to control the cleaning member, the first drive device, and the second drive device such that the second drive device drives one of the one or more filter screens to a predetermined position and the first drive device drives the cleaning member to move relative to the filter screen at the predetermined position to clean the filter screen.

The invention also provides an air conditioner which comprises the automatic filter screen cleaning equipment.

According to the automatic filter screen cleaning equipment provided by the embodiment of the invention, the filter screen in the air conditioner can be automatically cleaned, and the pollution type of the filter screen can be identified so as to be cleaned in a proper mode.

These and other advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the present invention, taken in conjunction 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 in conjunction with the accompanying drawings, which are included to provide a schematic illustration of embodiments of the invention, and not all possible implementations, and are not intended to limit the scope of the invention. In the drawings:

fig. 1 and 2 are schematic views illustrating 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 a stopper mechanism according to an embodiment of the present invention.

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

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

Fig. 7 is a perspective view showing the structure of the upper tooth post in the stopper mechanism.

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

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

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

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

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

Fig. 13 is a schematic view showing the 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 and is not intended to limit the present invention. Furthermore, in the following description, the same reference numerals will be used to designate the same or similar components in different drawings. The various features of the various embodiments described below may be combined with one another to form other embodiments within the scope of the invention.

Fig. 1 and 2 are schematic views showing 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 placed in an indoor space such as a living room, a bedroom, a bathroom, etc. for accommodating an air conditioner. However, the air conditioner may be used alone without being assembled in the installation cabinet. As shown in fig. 1, the air conditioner comprises an air conditioner cabinet 2, and an air outlet grid 3 and a control panel 4 are arranged on a door plate of the air conditioner cabinet 2. An evaporator 5 and a condenser 6 are also arranged in the air conditioner cabinet 2, and an evaporator cold air return pipe 51 and an evaporator cold air outlet pipe 52 are respectively arranged at the inlet and the outlet of the evaporator 5; the inlet and outlet of the condenser 6 are provided with a condenser heat rejection return air pipe 61 and a condenser heat rejection air pipe 62, respectively. The evaporator cool air return duct 51, the condenser heat rejection return duct 61 and the condenser heat rejection air duct 62 are all disposed outdoors, and the evaporator cool air outlet duct 52 is disposed at the outlet grill 3, as shown in fig. 2. The outlet of the evaporator 5 is further provided with a backup cold air return duct 53, and the inlet and outlet of the condenser 6 are further 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 all located indoors, and the evaporator cool air return duct 51, the condenser heat rejection return duct 61 and the condenser heat rejection air duct 62 are all located outdoors, so that indoor air is prevented from entering the air conditioner circulation system, and the air with oil smoke is reduced from entering the air conditioner.

In the cooling mode of the air conditioner, the condenser 6 sucks air through the condenser heat removal return air duct 61 to remove heat from the condenser, and the hot air having absorbed heat from the condenser 6 is discharged from the condenser heat removal air duct 62. The evaporator sucks air from the evaporator cool air return duct 51, exchanges heat with the evaporator, and blows out cooled cool air from the evaporator cool air outlet duct 52 to achieve the effect of cooling the room.

Within air conditioning cabinet 2, evaporator cool air return air duct 51 is in gaseous communication with backup cool air return air duct 53 (e.g., via a conduit disposed within air conditioning cabinet 2), condenser heat rejection return air duct 61 is in gaseous communication with backup condenser heat rejection return air duct 63 (e.g., via a conduit disposed within air conditioning cabinet 2), and condenser heat rejection air duct 62 is in gaseous communication with backup condenser heat rejection air duct 64 (e.g., via a conduit disposed within air conditioning cabinet 2). When the indoor lampblack is less, the lampblack is converted into a standby pipeline, indoor air is utilized for circulation, and energy is saved. When the standby cold air return duct 53 is activated, indoor air is sucked from the standby cold air return duct 53 and then discharged through the evaporator cold air outlet duct 52; and when the backup condenser heat rejection return duct 63 is activated, indoor air is sucked from the backup condenser heat rejection return duct 63 and then discharged to the outside via the condenser heat rejection 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 provided between the inlet of the evaporator 5 and the evaporator cold air return duct 51, and the filter box 56 is provided between the outlet of the evaporator 5 and the backup 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 arranged between the inlet of the condenser 6 and the condenser heat rejecting return air pipe 61, and the filter tank 66 is arranged between the outlet of the condenser 6 and the backup condenser heat rejecting return air pipe 63.

The filter box comprises a filter screen so as to filter the air sucked into the air conditioner, and the filter box can automatically clean the filter screen so as to ensure the running efficiency of the air conditioner. In the following, the filter box 55 is taken as an example, and the other filter boxes 56, 65 and 66 have similar structures and are not described herein.

< Case of two Filter screens >

Fig. 3 is a perspective view showing 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 device 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 member, a first driving device and a second driving device; and control means for controlling the cleaning member, the first driving means, and the second driving means such that the second driving means drives one of the one or more filter screens to a predetermined position, and the first driving means drives the cleaning member to move relative to the filter screen at the predetermined position to clean the filter screen. The control means, which are not shown in fig. 3, may be provided in the device of fig. 3 or outside the device and may be communicatively connected to the cleaning device in a wired or wireless manner for controlling the individual components in the cleaning device.

In one example, the first drive means comprises a first rail and a first motor which drives the cleaning member along the first rail under the control of the control means. 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 filter box 55 includes a housing including an upper housing 5501 and a lower housing 5502. The lower housing 5502 is composed of two partial quadrangular pyramids with opposite shrinkage directions, and is hollowed out. The upper case 5501 has a hollow rectangular parallelepiped shape. The upper housing 5501 is provided with through holes formed in two opposite side walls (hereinafter also referred to as a first side wall and a second side wall) which communicate with the inlet of the evaporator 5 and the evaporator cool air return duct 51, respectively.

Hereinafter, for convenience of explanation, as shown in fig. 3, the length 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 rail 5506 in the extending direction (z-direction) are fixed to both side walls of the upper housing 5501, which are perforated, respectively, and a second polished rod 5514 opposite to the second rail is also fixed to both side walls so as to support the filter mesh lower bracket 5509 together with the second rail. The first rail 5505 is mounted to a middle portion in the extending direction (z direction) of the second rail 5506, and a first polished rod 5513 is mounted at the middle portion in the extending direction of the second polished rod 5514. The arrangement of the guide rail and the polish rod is not limited to the one shown in fig. 3, and for example, one guide rail and two polish rods may be provided to drive the lower bracket 5509. In addition, the first rail 5505 and the second rail 5506 may be, for example, ball screws, and the first motor and the second motor may be, for example, servo motors or stepper motors, but are not limited thereto, and other types of rails and motors may be used as needed by those skilled in the art.

The filter screen automatic cleaning device 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, the lower support being mounted to one side of the second rail 5506 and being movable along the second rail by the driving of the second motor, thereby moving the supported filter screen to a predetermined position. In the example of fig. 3, a filter screen lower bracket 5509 is mounted on the second rail 5506 and the second polished rod 5514, and the filter screen bracket 5508 is mounted to the first and second side walls of the housing that are perforated. The screen bracket 5508 is provided with a locking means which is unlocked (e.g., to move the "shaped" upper bracket in fig. 3 in the x-direction away from the upper end of the screen) when a cleaning operation is initiated, thereby allowing the lower bracket to carry the screen to a predetermined position; and when the cleaning operation is completed and the filter screen is returned to the working position, the locking means locks (e.g., moves the upper bracket of the "l" shape in fig. 3 in the negative x direction and engages the upper end of the filter screen), so that the upper bracket fixes the position of the filter screen.

In addition, another locking device may be provided on the filter screen lower bracket 5509 to unlock the lower bracket when cleaning is started and lock the other locking device to fix the filter screen when the lower bracket (or the filter screen) is returned to the working position. The further locking means may be realized 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 which is not reversible by itself; or both or other prior art techniques in the field may be employed.

The cleaning device further includes a stopper member that restrains the filter screen in a predetermined position when cleaning and releases the restraint when cleaning is completed. A stop member is mounted in the middle of the second rail 5506 and preferably another stop member is also mounted in the middle of the second polished rod 5514.

The stopper member includes a main body 5507 and a boss 5512 mounted to a cleaning member 5510 (to be described later). The main body is mounted to the second rail 5506 on the opposite side 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 body 5507 of the stop mechanism includes a housing and, as shown in fig. 4, two push-type telescoping mechanisms. The telescoping mechanism includes an upper post 5507a, a locking member 5507b, a linkage member 5507c, a lower post 5507d, a spring 5507e, and a base 5507f.

Fig. 5 and 6 are schematic views showing the structure of the locking member 5507b, wherein fig. 5 is a perspective view of the locking member and fig. 6 is a bottom view of the locking member. As shown in fig. 5, the locking member is generally cylindrical, and is provided with: guide grooves 5507b1 and 5507b1' that mate with guide ribs in lower column 5507 d; and helical teeth 5507b2, one tooth face of which guides the guide rib to the tooth root and locks the guide rib at the tooth root, while the other tooth face guides the guide 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 locking member at equal intervals in the circumferential direction, but the number of guide grooves and 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 guide groove 5507b1 'of the three guide grooves penetrates through the cylinder wall of the locking member for receiving the tooth block 5507a2' to which the rack 5507c1 is coupled.

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

Upper toothed column 5507a includes column 5507a1 and blocks 5507a2 and 5507a2'. One end of the cylinder is hemispherical and, as shown in fig. 3, the hemispherical end protrudes from the second rail 5506 through a through hole (not shown) in the second rail, and the outer diameter of the cylinder is smaller than the inner diameter of the locking member. The tooth blocks are attached to the periphery of the cylinder 5507a1 and triangular teeth on the tooth blocks protrude from the cylinder, and the tooth blocks are arranged at equal intervals in the circumferential direction. Most of the tooth blocks 5507a2 are disposed at an end of the cylinder opposite to the hemispherical end, and the tooth blocks 5507a2' to which the rack 5507c1 is connected extend 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 secured to the cylinder by fasteners such as countersunk bolts.

Here, the hemispherical end is merely illustrative, and the cylindrical end may be provided in other shapes, such as a conical shape, or 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 5507c3.

Fig. 9 shows a perspective view of the internal structure of the rack 5507c 1. As shown in fig. 4 and 9, the rack 5507c1 is attached to the tooth block 5507a2' and includes a housing c10 (only one side wall of the housing is shown in fig. 9), a helical tooth body c11, a spring c13, a spring seat c14, and a groove c12 on the side wall. The housing is provided with grooves c12 on two opposite side walls, and the helical gear c11 is provided with a shaft hole (preferably, at the center or gravity center) and rotatably supported via shafts passing through the shaft hole and fixed to the two opposite side walls of the housing. At one end of the helical tooth body c11, projections c15 are provided on both sides adjacent to the above two opposite side walls, the projections c15 being placed in the corresponding grooves and being movable along the grooves. The other end of the helical tooth body c11 provided with a tooth portion protrudes from the housing so as to mesh with the gear 5507c 2. The movement range of the helical gear can be defined by designing the shape of the groove. The spring seat c14 is fixed to the housing, and serves to support the spring c13. The spring is connected to the one end of the helical rib to maintain the helical rib in the upper limit defined by the shape of the groove shown in fig. 9 in the absence of external force. When the rack 5507c1 moves in the opposite direction of the x-axis shown in the figure, the lower tooth surface of the helical gear body contacts the gear 5507c2, and the helical gear body is held at the upper limit by the reaction force of the gear. When the rack 5507c1 moves in the x direction, the upper tooth surface of the helical gear body contacts the gear 5507c2, and when the reaction force of the gear is greater than the tension force of the spring c13, the projection c15 moves along the groove, and as the reaction force of the gear increases, the tooth portion is gradually accommodated into the housing. The upper tooth surface of the final skewed tooth body slides over gear 5507c2 without jamming with the gear. In this process, due to the ratchet mechanism 5507c3, the gear 5507c2 transmits motion only 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 in the left telescoping mechanism in the figures allows the gear to rotate counterclockwise and prevents clockwise rotation, and the ratchet in the right telescoping mechanism allows the gear to rotate clockwise and prevents counterclockwise rotation. Thus, movement of either upper post in the negative x-direction can be transferred to the other upper post, and movement of either upper post in the x-direction cannot be transferred. Thus, no latch occurs between the rack and the gear and between the gear and the gear.

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

As shown in fig. 10, the lower column includes an upper cylinder 5507d1 and a lower cylinder 5507d2. The upper cylinder 5507d1 is cylindrical, and has 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 greater 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 guide slot complex guide bar. The guide ribs are arranged on the periphery of the upper cylinder and are attached to the outer surface of the upper cylinder, and the guide ribs are equal in distance. The number of the guide ribs is the same as that of the guide grooves, one end of the guide ribs is connected to the outer side of the bottom wall, and the other end of the guide ribs is an inclined surface which is flush with one tooth surface of the triangular teeth on the upper cylinder body, as shown in fig. 11.

Here, the outer diameter of the upper cylinder 5507d1 is smaller than the inner diameter of the locking member 5507b but larger than the outer diameter of the cylinder 5507a1 so that the tooth block 5507a2 can contact the triangular teeth on the upper cylinder 5507d 1.

With continued reference to fig. 4, a spring 5507e is disposed between the lower barrel 5507d2 and the base 5507 f. The base 5507f is cylindrical and has one end open 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 5507d2 to be in contact with the bottom wall of the lower cylinder 5507d2, and enables the lower cylinder 5507d2 to rotate with respect to the spring 5507e.

Preferably, the other end of the spring 5507e is in rolling contact with the bottom wall of the lower cylinder 5507d 2. 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 5507d2, and rolling contact may be achieved between the circular plate and the bottom wall of the lower cylinder 5507d2 by balls embedded on the bottom wall or the circular plate; or rolling contact is achieved between the circular plate and the bottom wall of the lower cylinder 5507d2 by a plate member with balls, which is provided with through holes and in which the balls are installed.

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 non-activated state of the stop member, the spherical ends 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 time, the guide rib is locked at the tooth root of the tooth 5507b2 of the locking member 5507 b.

As the lower carriage moves, the stop member is triggered when the lower carriage contacts and presses either of the bulbous ends, and after the lower carriage passes and releases the pressed bulbous end, both posts have sprung out to restrain the lower carriage between them. Here, as the spherical tip is gradually pressed, the blocks 5507a2 and 5507a2' first come into contact with the tips of the triangular teeth on the upper cylinder 5507d1 and gradually slide toward the tooth root. In the process, the guide rib withdraws from the tooth root and slides along the other tooth surface of the helical tooth 5507b2 on the locking member 5507 b. When the pressing is released, the guide rib finally slides into the guide groove of the locking piece 5507 b.

As the cleaning member moves along the first rail to about the second rail, the nose 5512 begins to press against the hemispherical end of the cylinder; as the cleaning member moves, the hemispherical end is further pressed and the entire cylinder is retracted into the housing of the main body 5507; after the nose 5512 is clear, the hemispherical end protrudes from one side of the second rail, so that the detent mechanism enters the unactuated state. Here, when the nose 5512 contacts and presses the hemispherical end, the tooth block 5507a2 contacts and presses the guide rib until exiting the guide groove, and at this time, the guide rib slides toward one tooth surface of the helical tooth 5507b2 of the locking member 5507b due to the guide of the tooth surface of the tooth block 5507a 2; when the nose 5512 is moved away from the bulbous end and the depression is released, the guide rib slides along the one tooth face toward the tooth root of the skewed tooth 5507b2, thereby locking the guide rib.

The construction and operation of the stop mechanism is described above. However, in the case where the second guide rail employs a ball screw, the stopper mechanism may not be provided, and the position of the lower bracket may be restricted by employing a motor which is not reversible 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 accommodating portion 5511 to prevent the cleaning member from being contaminated. Referring to fig. 3 and 12, the cleaning member includes two cleaning parts 5510a, two support arms 5510b, and a rotation shaft 5510c.

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

The cleaning portion 5510a is provided with a first cleaner for cleaning greasy dirt and a second cleaner for cleaning dust. Alternatively, the cleaning part 5510a may include only the first cleaner or the second cleaner.

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

In one example, the first cleaner includes a water spray portion and a first cleaning brush distributed on one side of the cleaning portion. Fig. 13 is a schematic view showing positions of the water spraying part and the first cleaning brush. As shown in fig. 13, the water spraying part 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 rotatable 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 positioned in front washes the filter screen to wet the filter screen and take away part of dirt; the rear rotary brush then scrubs the filter screen to further carry away the strongly adhering dirt. The liquid sprayed from the nozzle may be water or a cleaning liquid with a specific cleaning agent added thereto, and the water or cleaning liquid sprayed on the filter screen can soften a portion of the strongly adhering dirt, thereby helping the rotating brush to scrub the strongly adhering dirt.

In the case where the first cleaner includes the water spraying 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 drawing). 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 water ejected from the nozzle.

The second cleaner includes second cleaning brushes distributed on a side of the cleaning portion opposite to a 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 receiving part (not shown in the drawings). The dust sucking unit sucks dust swept by the second cleaning brush, and the dust separating unit separates dust in the sucked gas from air, and the dust accommodating portion accommodates the separated dust.

As shown in fig. 3, the lower housing 5502 includes two passages 5502a (first trapway) and 5502b (second trapway). The passage 5502a communicates with the recovery portion, and the passage 5502b communicates with the dust suction unit, the dust separation unit, and the dust storage portion. In the operating state, the passage 5502a is opened and the passage 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 passage 5502 a.

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

When the filter screen is cleaned by the second cleaner, the passage 5502a is closed and the passage 5502b is opened, so that dust separated from the filter screen is sucked into the passage 5502b by the dust suction unit, and the dust separation unit separates dust in the sucked gas from 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, thereby preventing the dust from scattering and drifting away.

Preferably, as shown in fig. 3, the cleaning device further includes two roller blinds 5503 mounted to the outer side of the receiving portion 5511. The roller shutter is communicatively connected to the control device. When the filter screen is moved to a predetermined position and is ready to start cleaning the filter screen, the roller shutter is opened under the control of the control device so as to separate the filter screen to be cleaned from other filter screens, thereby preventing dirt during cleaning from splashing onto the other filter screens. And when the cleaning is completed, the control device firstly rolls up the rolling curtain 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 for fixing the upper end of the filter screen in the x-direction may be provided on the first guide rail, and two rows of spray heads may be provided at both ends of the rotary brush, thereby allowing the cleaning member to perform cleaning also when it is movable in the x-direction.

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

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

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

Alternatively, the evaluation unit includes a contamination type recognition section, a contamination level recognition section, and a determination section. The pollution type recognition part is used for recognizing the pollution type of the filter screen, namely dust pollution or oil stain pollution, and can be realized by adopting 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 or capacitance and the like at two ends of the filter screen; or the pollution level recognition part can detect the pollution level by detecting the change of the optical signal transmitted through the filter screen. At this time, the pollution level recognition part may constantly monitor the pollution level data of the filter screen, and the determination part may trigger the pollution type recognition part to recognize the type of pollution when it is determined that the data reaches the predetermined threshold, and then the evaluation unit may transmit the obtained pollution level and pollution type data to the control device.

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

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

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

Further, the control device is further configured to control the shutter to open after the filter screen is driven to a predetermined position, and then control the first motor and the cleaning portion.

Also, the control device is configured to control the locking device to lock or unlock the filter screen holder.

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 filter screen automatic 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 filter screen automatic cleaning apparatus may also accommodate one or more than three filter screens. The following describes the configuration of the apparatus to accommodate more than three filter screens and the operation thereof.

< Case of more than three Filter screens >

When more than three filter screens are accommodated in the automatic filter screen cleaning apparatus, other filter screen holders may be mounted to other side walls of the housing, or all of the filter screen holders may be mounted to other side walls, in addition to the filter screen holders immediately adjacent to the first and second side walls. Alternatively, two cross beams may be mounted on two opposite side walls of the housing and an upper bracket is fixed to the cross beams, 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; alternatively, the cleaning member may be located between the penultimate filter and the penultimate filter, and the cleaning member cleans the penultimate filter before cleaning the remaining filters. Alternatively, the position of the filter screen may be fixed, and the first rail may be movable along the second rail, so that the cleaning member is moved to the position of the filter screen to clean the filter screen.

The operation of other components in the automatic filter screen cleaning device is the same as the two filter screen embodiments, and will not be described again here.

The foregoing description of various embodiments of the invention has been presented for the purposes of illustration and description and is not intended to be a limitation on the invention. 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 way in one or more other embodiments in combination with or instead of the features of the other embodiments. It will be appreciated by those skilled in the art that various changes and modifications may be made to the embodiments described above without departing from the inventive concepts of the present invention.

In summary, in the embodiment according to the present invention, the following technical solutions are provided.

Scheme 1. An automatic filter screen cleaning device comprises:

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;

And a control device communicatively connected to the cleaning device and configured to control the cleaning member, the first drive device, and the second drive device such that the second drive device drives one of the one or more filter screens to a predetermined position and the first drive device drives the cleaning member to move relative to the filter screen at the predetermined position to clean the filter screen.

Solution 2. The automatic filter screen cleaning apparatus according to solution 1, wherein,

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

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

Solution 3. The automatic filter screen cleaning apparatus according to solution 2, wherein,

The cleaning member includes two cleaning portions, and is mounted on the first rail so as to: 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 as the cleaning member moves along the entire first rail.

Solution 4. The automatic filter screen cleaning apparatus according to solution 3, wherein,

The cleaning part comprises a first cleaner for cleaning greasy dirt.

Solution 5. The automatic filter screen cleaning apparatus according to solution 4, wherein,

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

Solution 6. The automatic filter screen cleaning apparatus according to solution 5, wherein,

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

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

The cleaning part includes a second cleaner for sweeping dust.

Solution 8. The automatic filter screen cleaning apparatus according to solution 7, wherein,

The second cleaner is a second cleaning brush.

Solution 9. The automatic filter screen cleaning apparatus according to solution 8, wherein,

The cleaning device further includes a dust suction unit and a dust separation unit.

Solution 10. The automatic filter screen cleaning apparatus according to solution 9, further comprising a housing including:

An upper case accommodating the cleaning member, the first driving device and the second driving device;

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

Solution 11. The automatic filter screen cleaning apparatus according to any one of solutions 1 to 10, further comprising:

A filter screen support for supporting a filter screen and including an upper support for fixing an upper end of the filter screen and a lower support for fixing a lower end of the filter screen, the lower support being mounted to one side of the second guide rail and 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 support being fixed to the housing.

Solution 12. The automatic filter screen cleaning apparatus according to claim 11, wherein,

The upper bracket is internally provided with a locking device, and when the cleaning operation is executed, 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 device controls the locking device to lock the upper bracket so as to restrain the movement of the upper end of the filter screen.

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

The control device controls the other locking device to unlock the lower bracket so that the lower bracket can move along the second guide rail under the drive of the second motor when the cleaning operation is performed; upon completion of the cleaning operation and return of the lower carriage to the working position, the control means controls the further locking means to lock the lower carriage to restrict movement of the lower carriage.

Solution 14. The automatic filter screen cleaning apparatus according to solution 11, wherein,

The cleaning device further includes a stopper member that restrains the filter screen in a predetermined position at the time of cleaning and releases the restraint at the time of cleaning completion.

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 being mounted to the other side of the second rail, the other side being opposite to the side to which the lower bracket is mounted, and the main body including two push-type telescopic mechanisms including a column and configured to:

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

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

when the lower bracket passes by and releases the cylinder with the pressed tail end, the other cylinder with the pressed tail end pops up, so that the lower bracket is restrained between the two cylinders; and

When the cleaning member moves along the first rail to the vicinity of the second rail, the projection starts to press the cylinder, and with the movement of the cleaning member, the cylinder is further pressed and finally enters an unactuated state.

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

The telescopic mechanism comprises:

An upper tooth column including a cylindrical column body having one end portion thereof in a hemispherical shape and the other end thereof being open, and a plurality of first tooth blocks and one second tooth block attached to the periphery of the column body and arranged at equal intervals and having their tooth portions protruding from the open end of the column body, the first tooth blocks being distributed at the open end of the column body and the second tooth blocks being distributed throughout the column body except for the hemispherical end portion;

the locking piece is cylindrical and comprises a plurality of first guide grooves, a second guide groove and inclined teeth positioned at one end of the locking piece, wherein the sum of the first guide grooves and the second guide grooves is equal to the sum of the first tooth blocks and 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 part extends out of the other end of the locking piece;

A lower tooth column comprising an upper cylinder and a lower cylinder which are cylindrical, wherein one end of the upper cylinder is attached to the lower cylinder and the end face of the other end is provided with triangular teeth, one end of the lower cylinder is opened, the other end is provided with a bottom wall for connecting with one end of the lower cylinder, the periphery of the bottom wall is distributed with guide ribs matched with the guide grooves, the guide ribs are attached to the periphery of the upper cylinder, one end of each guide rib is connected with the bottom wall, and the other end of each guide rib is provided with a slope which is level with one tooth face of the triangular teeth;

A spring having one end fixed to the bottom wall of the base and the other end in contact with the bottom wall of the lower cylinder, and the lower cylinder being rotatable relative to the spring;

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

A linkage comprising a rack attached to the second tooth block and a gear meshed with the rack and for transmitting motion between the two telescopic mechanisms.

Solution 17. The automatic filter screen cleaning apparatus according to claim 16, wherein,

A ratchet mechanism is attached to the gear so that the linkage transmits only unidirectional motion.

Solution 18. The automatic filter screen cleaning apparatus according to solution 17, wherein,

The rack comprises a shell, an inclined tooth body, a spring and a spring seat,

Grooves are arranged on two opposite side walls of the shell,

The helical gear is mounted to both side walls of the housing via a shaft passing through the helical gear and is rotatable about the shaft, one end of the helical gear being toothed, and the other end being provided with projections on two opposite sides proximate to the two side walls, the projections projecting into the grooves to define the range of rotation of the helical gear,

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 is not engaged with the gear.

Solution 19. The automatic filter screen cleaning apparatus according to solution 16, wherein,

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

Solution 20. The automatic filter screen cleaning apparatus according to any one of the solutions 1 to 10, wherein,

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

Solution 21. The automatic filter screen cleaning apparatus according to solution 20, wherein,

The cleaning device further includes a roller shutter mounted to an outer side of the receiving part and lowered when a cleaning operation is performed to prevent dirt from contaminating other filter screens during cleaning; and rolled up when the cleaning operation is not performed.

Solution 22. The automatic filter screen cleaning apparatus according to any one of solutions 1 to 10, further comprising:

And a monitor for monitoring the type of pollution and the degree of pollution of the filter net and transmitting pollution data about the type of pollution and the degree of pollution to the control device when the degree of pollution is greater than a predetermined threshold.

Solution 23. The automatic filter screen cleaning apparatus according to solution 22, wherein,

The monitor includes:

an image acquisition unit that photographs the filter screen and transmits the photographed picture to the evaluation unit;

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

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

Solution 24. The automatic filter screen cleaning apparatus according to solution 23, wherein,

The identification part is realized by a deep neural network.

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

The recognition part comprises a pollution degree recognition part for recognizing the pollution degree and a pollution type recognition part for recognizing the pollution type, wherein the pollution type recognition part is realized through a deep neural network, and the pollution degree recognition part is used for recognizing 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.

Solution 27. The automatic filter screen cleaning apparatus according to solution 26, wherein,

The control device is configured to perform the following operations:

receiving pollution data from the monitor that the pollution level reaches the predetermined threshold;

selecting the first cleaner or the second cleaner to perform cleaning based on a type of pollution, and selecting the corresponding first trapway or the second trapway;

Setting a cleaning parameter based on the pollution level;

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

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

Solution 28. The automatic filter screen cleaning apparatus according to solution 27, wherein,

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

An air conditioner comprising the filter screen automatic cleaning apparatus of any one of aspects 1 to 28.

Claims

1. An automatic filter screen cleaning device comprising:

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 screens to a predetermined position and the first drive means drives the cleaning member to move relative to the filter screen at the predetermined position to clean the filter screen;

a housing;

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;

A filter screen bracket for supporting a 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 rail and being movable along the second 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;

The cleaning device further includes a stopper member restraining the filter screen in a predetermined position at the time of cleaning and releasing the restraint at the time of cleaning completion;

The nose begins to press against the post as the cleaning member moves along the first rail to about the second rail, and as the cleaning member moves, the post is further pressed and eventually enters an unactuated state;

The telescopic mechanism comprises:

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

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

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

The cleaning part comprises a first cleaner for cleaning greasy dirt.

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

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

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

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

The cleaning part includes a second cleaner for sweeping dust.

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

The second cleaner is a second cleaning brush.

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

9. The filter screen automatic cleaning apparatus according to claim 8, the housing comprising:

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

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

11. The automatic filter screen cleaning apparatus according to claim 10, wherein,

12. The automatic filter screen cleaning apparatus according to claim 11, wherein,

13. The automatic filter screen cleaning apparatus according to claim 12, wherein,

The rack comprises a shell, an inclined tooth body, a spring and a spring seat,

Grooves are arranged on two opposite side walls of the shell,

14. The automatic filter screen cleaning apparatus according to claim 11, wherein,

15. The automatic filter screen cleaning apparatus according to any one of claim 13, wherein,

16. The automatic filter screen cleaning apparatus according to claim 15, wherein,

17. The filter screen automatic cleaning apparatus of claim 15, further comprising:

18. The automatic filter screen cleaning apparatus according to claim 17, wherein,

The monitor includes:

19. The automatic filter screen cleaning apparatus of claim 18, wherein,

The identification part is realized by a deep neural network.

20. The automatic filter screen cleaning apparatus of claim 18, wherein,

21. The automatic filter screen cleaning apparatus of claim 20, wherein,

The physical parameters include electrical parameters and optical parameters.

22. The automatic filter screen cleaning apparatus of claim 21, wherein,

The control device is configured to perform the following operations:

Setting a cleaning parameter based on the pollution level;

controlling the operation of the second motor to drive the filter screen to the preset position along the second guide rail;

23. The automatic filter screen cleaning apparatus of claim 22, wherein,

24. An air conditioner comprising the filter screen automatic cleaning apparatus of any one of claims 1 to 23.