CN101270913B - Cabinet air-conditioner dust gauze self-cleaning device and operation method thereof - Google Patents

Abstract

The invention discloses a self-cleaning device for a filter screen of a cabinet type air conditioner and a working method thereof. The nozzle mechanism is attached to the outer side of the filter screen, including the base body vertically placed on the filter screen and the suction nozzle set on the base body. The base body is driven by the drive mechanism to slide between the left and right sides of the filter screen along the track, sucking The nozzle is driven by another driving mechanism to slide between the filter net and the lower sides along the base. The suction nozzle is equipped with a dust suction port and a brush, and is connected to the vacuum cleaner installed in the air conditioner through a connecting channel. The brush near the suction port cleans the filter screen, and then the vacuum cleaner generates negative pressure and high-speed airflow in the hollow cavity of the suction nozzle through the connecting channel to maintain strong suction at the suction port. The invention has reliable movement, low cost, comprehensive dust collection range and good dust collection effect.

Description

Self-cleaning device for filter screen of cabinet type air conditioner and working method thereof

technical field

The invention relates to an air conditioner filter screen cleaning device, in particular to a self-cleaning device capable of automatically cleaning the air filter screen at the air inlet side of an air conditioner indoor unit.

Background technique

At present, the dust removal method of ordinary split floor air conditioners is mainly to use the air filter installed near the air inlet to absorb the dust in the air, but too much dust on the filter will bring many negative effects. For example, too much dust causes the blockage of the filter mesh, causing poor ventilation, reducing the circulating air volume through the heat exchanger, affecting the cooling and heating effect, greatly reducing the air conditioning capacity, and increasing operating costs. At the same time, part of the dust on the filter screen may enter the indoor air again with the circulating air flow, affecting the indoor air quality and inconsistent with the health function of the air conditioner. Therefore, how to remove the dust on the air conditioner filter screen has become a common concern of users and air conditioner manufacturers. At present, the dust removal method of air conditioner filters on the market is still at the level of manual cleaning, and the filter screen with an easy-to-removal and washable structure is adopted. After the filter screen has accumulated dust, it needs to be disassembled by after-sales service personnel or users for cleaning. Although this method can remove the accumulated dust on the filter screen, it requires frequent dismantling, washing and maintenance, which is nothing less than a laborious and time-consuming labor burden for the user. Faced with this situation, the technicians of air-conditioning manufacturers at home and abroad have intensified their research efforts in self-cleaning of air filters to seek technological breakthroughs.

Chinese Patent Application No. 200410057535.9 discloses a vacuuming belt vacuuming method with a suction hole, which concentrates the suction action of the suction device on the suction port, so that a stronger suction force can be maintained. At the same time, the suction position is changed by driving the vacuum belt and moving the suction port, so that the dust suction device scans on the air filter, thereby completing the cleaning of the entire area of the air filter. However, the cost of this implementation is high, and the processing technology is difficult. The vacuum belt is a thin plastic film, and it is difficult to process it into a certain shape. The vacuum belt must also bear tension and friction during the driving process, so the material requirements are strict. At the same time, the suction belt must be sealed with peripheral components and not deviate from the center line of the suction hole during the movement process, so the processing accuracy is also very high. After the long-term operation of the dust collection device, the wear and tear of the suction belt is unavoidable.

Chinese patent application No. 200610034955.4 discloses a self-cleaning device capable of automatically cleaning the air filter on the side of the air inlet of the air-conditioning indoor unit, including a suction nozzle mechanism and a filter mechanism, and the filter mechanism includes a base, a filter, and a filter Net frame, motor and its rotating drive mechanism, the nozzle mechanism includes a nozzle bracket and a nozzle, the base is fixed on the air duct volute of the air conditioner, the filter is fixed on the filter net frame, the motor is fixed on the base, and the rotation is driven The active part of the mechanism is connected with the output shaft of the motor, the filter net frame is fixed on the driven part of the rotary drive mechanism, the suction nozzle bracket with the dust suction port at the lower end is fixed on the base, and the suction nozzle is fixed on the suction nozzle bracket. The suction nozzle is connected with the dust suction mechanism through the suction pipe. The dust suction method of this structure is through the rotation of the filter screen, so that the dust suction port moves relatively on the filter screen to achieve the effect of dust collection. However, because the filter screen rotation requires a high-power drive motor, the noise is relatively large. In addition, the dust suction port is a The slender opening, the opening is relatively large, and the suction effect is poor, so the dust removal effect is not ideal, especially in the area far from the middle of the filter, the dust removal effect is even worse.

In view of this, the present invention is proposed.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide a self-cleaning device for a cabinet-type air conditioner filter with wide cleaning range, high efficiency, good effect, time-saving and labor-saving.

Another object of the invention is to provide a working method of the self-cleaning device.

In order to solve the above-mentioned technical problems, the basic idea of the technical solution adopted by the present invention is: a self-cleaning device for a cabinet-type air conditioner filter, including a suction nozzle mechanism and a filter mechanism, characterized in that: the filter mechanism is fixed on the air conditioner The outside of the air duct volute includes a filter screen and a filter screen frame; the suction nozzle mechanism is attached to the outer side of the filter screen, including a base body vertically placed on the filter screen and a suction nozzle arranged on the base body. The base body is driven by the drive mechanism to slide between the left and right sides of the filter screen, and the suction nozzle is driven by the drive mechanism to slide along the base body between the filter screen and the lower two sides to suck the dust attached to the filter screen.

Wherein, the outer side of the suction nozzle mechanism is provided with a dust cover, and a space groove is provided between the dust cover and the suction nozzle mechanism as a base body and a space for the suction nozzle to move.

The driving mechanisms are respectively a main driving mechanism arranged on one side of the filter screen frame and an auxiliary driving mechanism arranged on the base, wherein the main driving mechanism drives the base, and the auxiliary driving mechanism drives the suction nozzle.

The drive mechanism is composed of a drive shaft connected to the drive motor, a worm wheel that is slidably mounted on the drive shaft and rotates together with the drive shaft, and a rack meshed with the worm wheel.

The drive shaft or rack is provided with a blocking protrusion corresponding to the edge of the filter net. The driving shaft is preferably a regular polygonal cylindrical structure, so that the worm gear and the driving shaft rotate together and avoid relative rotation.

The main rack of the main driving mechanism is horizontally arranged on the upper or lower side of the filter screen frame, and is integrally formed with the filter screen frame. On the same side of the screen frame, one end is connected with the drive motor fixed on the filter screen frame, the main drive shaft passes through the central shaft hole of the main worm gear, the main worm gear is pivoted at one end of the base, and the other end of the base is equipped with rollers and protrusions , The roller is slidably arranged in the semi-closed track on the other side of the filter screen frame, and is stuck in the track through the convex part of the base body.

The auxiliary rack and the auxiliary driving shaft of the auxiliary driving mechanism are vertically arranged on the base body, the auxiliary driving shaft passes through the central axis hole of the auxiliary worm gear, the auxiliary worm gear is pivoted on the suction nozzle and meshes with the auxiliary rack, and one end of the auxiliary driving shaft is connected to the auxiliary rack. The motor is connected, and the other end is pivotally connected with the base body, and the motor is arranged on the base body.

The drive mechanism is composed of a drive shaft connected to the drive motor and formed with an external thread, and an internal thread mounted on the base/suction nozzle and screwed with the external thread. The base/suction nozzle is slidably arranged on a drive shaft on parallel screws. This driving mechanism can be used as a main driving mechanism and a secondary driving mechanism together with the above-mentioned driving structure using a worm wheel.

The suction nozzle is a closed structure with a hollow cavity. The side close to the filter screen is provided with a dust suction port and a brush corresponding to the dust suction port. In addition, one side is provided with a connecting channel port, and the suction nozzle It is connected with the vacuum cleaner arranged in the air conditioner through a connection channel. Wherein, the brush can be an electric brush, and its driving mode can be provided with a driving motor alone, or it can be driven by an auxiliary driving mechanism through a transmission gear set. The connecting channel is an elastic hose made of high-strength material. One end of the vacuum cleaner communicates with the connection channel, and the other end communicates with the dust removal pipe to discharge the dust to the outside through the dust discharge port on the lower side of the cabinet. Corresponding to the air inlet on the side, there is an outer cover driven by a motor on the air inlet. When the indoor air needs to be replaced, the motor drives the outer cover to open the air inlet and discharge the indoor dirty air to the outside to achieve the purpose of fresh air. Purpose.

The working method of the self-cleaning device for the cabinet type air conditioner filter is: after the cleaning work is started, the vacuum cleaner starts to run. First, the motor drives the auxiliary drive shaft to rotate, so that the suction nozzle is driven upward or downward on the base through the action of the auxiliary worm gear and the auxiliary rack. Move down, at this time, the brush cleans the dust on the filter screen and is discharged by the vacuum cleaner through the connecting channel through the suction port. When the suction nozzle moves to the edge of the filter screen, the worm gear touches the blocking protrusion. At this time, the motor reverses, and the suction nozzle moves in the opposite direction. Move, clean vertically and stop after one week, the drive motor drives the main drive shaft to rotate, and the main worm gear rotates, so that through the action of the main worm gear and the main rack, the substrate is driven to move one position to the left or right and then stops, and then the motor drives the auxiliary drive shaft Rotate, continue to work like this, until after the main worm gear hits the blocking convex, the drive motor drives the main drive shaft to rotate in reverse, and continues until it stops working.

Of course, it is also possible to run the main drive mechanism first and then the auxiliary drive mechanism, but the principle of alternate operation is the same.

The self-cleaning device for the filter screen of the cabinet type air conditioner according to the present invention can also be that the base body is driven by the drive mechanism to slide along the track between the filter screen and the lower two sides, and the suction nozzle is driven by the drive mechanism to slide along the track. The base body slides between the left and right sides of the filter to suck the dust attached to the filter. It is equivalent to rotating the above-mentioned whole mechanism by 90°.

After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

Because the present invention adopts the mechanism that the suction nozzle moves left, right, up and down to suck the dust on the filter screen, the dust suction action of the present invention is mainly completed by the dust suction port of the suction nozzle, and first passes through the hair near the dust suction port. The brush cleans the filter screen, and then the vacuum cleaner generates negative pressure and high-speed airflow in the hollow cavity of the suction nozzle through the connecting channel to maintain strong suction at the suction port. The driving mechanism respectively drives the suction nozzle to move horizontally or vertically at low speed and the substrate carrying the nozzle to move vertically or laterally, that is, to switch the dust collection area in sequence, so that the entire area of the filter can be cleaned. The present invention can fully absorb the accumulated dust on the filter net by using a low-power dust-absorbing mechanism. The present invention has reliable movement, low cost, comprehensive dust-absorbing range, and good dust-absorbing effect. Self-cleaning device for cabinet air conditioner filter.

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a schematic structural view of a self-cleaning device for a filter screen of a cabinet type air conditioner according to the present invention;

Fig. 2 is a three-dimensional structural schematic view of the self-cleaning device for the filter screen in the air conditioner according to the present invention;

Fig. 3 is a schematic diagram of the structure of the self-cleaning device for the filter installed in the air conditioner according to the present invention;

Fig. 4 is a front view of the self-cleaning device for the filter set in the air conditioner according to the present invention;

Fig. 5 is a structural schematic diagram of a vacuum cleaner according to the present invention;

Fig. 6 is a schematic structural view of the suction nozzle according to the present invention;

Explanation of reference symbols:

1 air conditioner, 2 air duct volute, 3 filter, 4 filter frame, 5 base, 51 main rack, 52 main drive shaft, 53 drive motor, 54 main worm gear, 6 suction nozzle, 601 suction port, 602 Brushes, 603 connecting channels, 61 racks, 62 driving shafts, 63 motors, 64 worm gears, 7 tracks, 8 dust covers, 9 blocking protrusions, 10 vacuum cleaners, 11 air inlets, 12 dust removal pipes, 13 rows Dust port, 14 air inlets, 15 space slots.

Detailed ways

As shown in Figures 1 to 4, the self-cleaning device for the filter screen of the cabinet type air conditioner of the present invention includes a suction nozzle mechanism and a filter screen mechanism, and the filter screen mechanism is fixed on the outside of the air duct volute 2 inside the air conditioner 1, including The filter screen 3 and the filter screen frame 4; the suction nozzle mechanism is attached to the external side of the filter screen 3, including a base body 5 vertically placed on the filter screen 3 and a suction nozzle 6 arranged on the base body 5. The base 5 is driven by the main driving mechanism to slide between the left and right sides of the filter screen along the track 7, and the main driving mechanism is arranged on the upper or lower side of the filter screen frame 4; the suction nozzle 6 is driven by the auxiliary driving mechanism It slides between the upper and lower sides of the filter screen 3 along the base body 5 to suck the dust attached to the filter screen, and the auxiliary driving mechanism is arranged on the base body 5 . The outer side of the suction nozzle mechanism can be provided with a dust cover 8 (referring to Fig. 3), to avoid dust from sticking to the drive mechanism and hindering its work, and there is a space between the dust cover 8 and the suction nozzle mechanism as the base body 5 and The space slot 15 where the suction nozzle 6 moves, and the dust cover can be installed in a detachable way, and installed by buckling or buckling. Wherein, the outside in the present invention refers to the side of the air conditioner facing the user, up, down, left and right in terms of the air conditioner standing upright.

As shown in Figure 1, described primary and secondary drive mechanism is installed on the drive shaft 52,62 freely by the drive shaft 52,62 that is connected with drive motor 53,63, slides freely and rotates with the worm wheel 54 of drive shaft, 64 and the tooth rack 51,61 that meshes with this worm wheel 54,64 constitutes, on described drive shaft 52,62 or tooth rack 51,61, corresponding filter screen 3 side parts are provided with blocking protrusion 9 to prevent matrix 5/suction nozzle 6 is separated from the edge of the filter screen 3, and when the base body 5/suction nozzle 6 hits the blocking protrusion 9, the drive motor 53, 63 rotates in reverse, wherein the drive shaft is preferably a regular polygonal cylinder structure, so that the worm gear and the drive shaft together rotation to avoid relative rotation.

The main rack 51 of above-mentioned main driving mechanism is horizontally arranged on the upper or lower side of the filter screen frame 4, integrally formed with the filter screen frame 4, and the main drive shaft 52 is parallel to the main rack 51 and pivotally arranged on the filter screen frame 4, with The main rack 51 is located on the same side of the filter screen frame 4, and one end thereof is connected with the driving motor 53 fixed on the filter screen frame; One end, the other end of base body 5 is equipped with roller and convex part (not shown in the figure), and roller is slidably arranged in the semi-enclosed track 7 of the other side of filter screen frame 4, is stuck on track 7 by the base body convex part Inside, that is, the base body 5 is perpendicular to the rack 51 , one end is fixed and positioned by the track 7 , and the other end moves along the rack 51 together with the worm wheel 54 . In this embodiment, the main rack 51 is arranged laterally on the upper side of the filter screen frame 4 , and the track 7 is located on the lower side of the filter screen frame 4 .

The auxiliary rack 61 and the auxiliary driving shaft 62 of the auxiliary driving mechanism are vertically arranged on the base body 5, the auxiliary driving shaft 62 passes through the central shaft hole of the auxiliary worm wheel 64, and the auxiliary worm wheel 64 is pivotally arranged on the suction nozzle 6 and the auxiliary rack. 61 meshes, one end of the auxiliary drive shaft 62 is connected with the motor 63, and the other end is pivotally connected with the base body 5, the motor 63 is arranged on the base body 5, and the auxiliary worm gear 64 rotates with the auxiliary drive shaft 62 while sliding on the auxiliary drive shaft 62, and then Drive the suction nozzle 6 to slide together.

In addition, the main and auxiliary driving mechanisms of the present invention can also be composed of a drive shaft connected to the drive motor and formed with an external thread and an internal thread installed on the base/suction nozzle and screwed with the external thread. The base/suction nozzle can be Slidingly arranged on a screw parallel to the drive shaft, the drive mechanism can be used as a main drive mechanism and a secondary drive mechanism together with the above-mentioned drive structure using a worm wheel, and the drive method is similar to the above-mentioned drive mechanism.

The dust suction action of the present invention is mainly completed by the suction nozzle 6. The suction nozzle 6 is a closed structure with a hollow cavity, and the side close to the filter 3 is provided with a dust suction port 601 corresponding to the dust suction port 601. The hairbrush 602 (referring to Fig. 6) that is provided with, on the other hand, one side is provided with a connecting channel opening, and the suction nozzle 6 is connected with the vacuum cleaner 10 provided in the air conditioner 1 through a connecting channel 603, and the connecting channel 603 is made of a high-strength material Fabricated elastic hose. In this embodiment, the flexible pipe is fixed on the upper part of the suction nozzle. Due to the movement of the suction nozzle 6, the brush 602 near the dust suction port 601 can clean the filter screen 3 when moving, and then the vacuum cleaner 10 passes through the connecting channel 603 in the hollow of the suction nozzle 6. Negative pressure and high-speed air flow is generated in the cavity to maintain strong suction at the suction port. In order to have a better dust cleaning effect, the brush can be an electric brush, and its driving method can be provided with a driving motor separately, or can be driven by an auxiliary driving mechanism through a transmission gear set.

As shown in Figure 5, one end of the vacuum cleaner 10 communicates with the connecting passage 603, and the other end communicates with the dust removal pipe 12 to discharge the dust outside through the dust outlet 13 on the lower side of the cabinet, and the end of the vacuum cleaner 10 communicating with the connecting passage 603 is opened. There is an air inlet 11, which corresponds to the air inlet 14 on the lower side of the air conditioner 1. The air inlet has an outer cover driven by a motor. When the indoor air needs to be replaced, the motor drives the outer cover to open and enter The air port discharges the indoor dirty air to the outside to achieve the purpose of fresh air. When the indoor air does not need to be replaced, the outer cover blocks the air inlet to generate negative pressure and high-speed airflow inside to achieve the purpose of dust collection.

The working method of the self-cleaning device for the filter screen of the cabinet type air conditioner is as follows: after the cleaning work is started, the vacuum cleaner 10 starts to run. First, the motor 63 drives the auxiliary drive shaft 62 to rotate, thereby driving the suction nozzle through the action of the auxiliary worm gear 64 and the auxiliary rack 61. 6 moves up or down on the base 5, at this time, the dust on the filter screen 3 is cleaned by the brush 602 and is discharged by the vacuum cleaner 10 through the dust suction port 601 through the connecting channel 603, and when the suction nozzle 6 moves to the edge of the filter screen 3, the worm wheel 64 Run into the blocking convex 9, at this time the motor 63 reverses, the suction nozzle 6 moves in the opposite direction, and stops after one week of horizontal cleaning. The role of the main rack 51 drives the base body 5 to move to the left or right and then stops, and then the motor 63 drives the auxiliary drive shaft 62 to rotate, so it continues to work until the main worm gear 54 touches the blocking protrusion 9, and then drives the motor 53 Drive the main drive shaft 52 to rotate counterclockwise, continue until stop working. In order to improve the cleaning efficiency, the base can be set at the leftmost or rightmost part of the filter screen in the initial state, and the suction nozzle is set at the uppermost or lowermost edge of the filter screen, that is, the suction nozzle is set at one of the corners of the filter screen, so, When cleaning is started, after the suction nozzle moves from the top to the bottom or from the bottom to the top and touches the blocking protrusion, the auxiliary drive motor stops, the main drive mechanism drives the base to move one position to the left or right and then stops, and the auxiliary drive The motor rotates in reverse, the suction nozzle returns, and continues. Finally, after the substrate moves to the far right or left, the suction nozzle moves up or down to the other corner of the filter, and the filter is cleaned once. It can be ended or reversed. Direction to continue cleaning. Among them, the length and speed of the left and right steps of the substrate and the speed of the suction nozzle moving up and down are all controlled by the program.

The cleaning method of the above-mentioned suction nozzle limits the brushes to be arranged on the upper and lower sides of the dust suction port. It is also possible to convert the operating modes of the above-mentioned main drive mechanism and auxiliary drive mechanism: first, the main drive mechanism drives the substrate to move left or right, that is, the suction nozzle moves left and right, and then the auxiliary drive mechanism drives the suction nozzle to move up or down by one position. In this cleaning method, the brush must be arranged on the left and right sides of the suction port.

The self-cleaning device for the filter screen of the cabinet type air conditioner according to the present invention can also be that the base body is driven by the drive mechanism to slide along the track between the filter screen and the lower two sides, and the suction nozzle is driven by the drive mechanism to slide along the track. The base body slides between the left and right sides of the filter screen to suck the dust attached to the filter screen, that is, it is equivalent to rotating the above-mentioned whole mechanism by 90°.

The present invention can fully absorb the accumulated dust on the filter net by using a low-power dust-absorbing mechanism. The present invention has reliable movement, low cost, comprehensive dust-absorbing range, and good dust-absorbing effect. Self-cleaning device for cabinet air conditioner filter.

Claims (9)

1. A self-cleaning device for a filter screen of a cabinet type air conditioner, comprising a nozzle mechanism and a filter screen mechanism, characterized in that: the filter screen mechanism is fixed on the outside of the air duct volute of the air conditioner, including a filter screen and a filter screen frame; The suction nozzle mechanism is attached to the outer side of the filter screen, and includes a base body vertically placed on the filter screen and a suction nozzle set on the base body. The suction nozzle is driven by the auxiliary drive mechanism to slide between the filter net and the lower two sides along the base to suck the dust attached to the filter net; the suction nozzle is a hollow cavity Closed structure, one side close to the filter screen is provided with a dust suction port and a brush corresponding to the dust suction port, and the other side is provided with a connecting channel port, and the suction nozzle is connected to the vacuum cleaner installed in the air conditioner through a connecting channel . 2. A self-cleaning device for a cabinet-type air conditioner filter according to claim 1, characterized in that: the main drive mechanism and the auxiliary drive mechanism are respectively the main drive mechanism located on one side of the filter screen frame and the An auxiliary driving mechanism on the base, wherein the main driving mechanism drives the base, and the auxiliary driving mechanism drives the suction nozzle. 3. A self-cleaning device for a cabinet-type air conditioner filter according to claim 2, characterized in that: the main drive mechanism and the auxiliary drive mechanism are freely mounted on the drive shaft by a drive shaft connected to the drive motor. It consists of a worm wheel that rotates together with the drive shaft, and a rack that meshes with the worm wheel. 4. A self-cleaning device for a filter screen of a cabinet type air conditioner according to claim 3, characterized in that: said driving shaft or rack is provided with a blocking protrusion corresponding to the edge of the filter screen. 5. A filter self-cleaning device for a cabinet-type air conditioner according to claim 4, characterized in that: the main rack of the main drive mechanism is horizontally and vertically arranged on the upper or lower side of the filter frame, and is integrated with the filter frame Forming, the main drive shaft is pivoted on the filter frame parallel to the main rack, located on the same side of the filter frame as the main rack, one end of which is connected to the drive motor fixed on the filter frame, and the main drive shaft passes through the main The central shaft hole of the worm wheel, the main worm wheel is pivoted at one end of the base body, and the other end of the base body is equipped with a roller and a convex part. inside the track. 6. A self-cleaning device for a cabinet type air conditioner filter according to claim 5, characterized in that: the auxiliary rack and the auxiliary drive shaft of the auxiliary drive mechanism are vertically arranged on the base, and the auxiliary drive shaft passes through the auxiliary drive shaft. The central shaft hole of the worm gear, the auxiliary worm gear is pivotally arranged on the suction nozzle and meshed with the auxiliary rack, one end of the auxiliary drive shaft is connected to the motor, and the other end is pivotally connected to the base body, and the motor is arranged on the base body. 7. A self-cleaning device for a cabinet-type air conditioner filter according to claim 1 or 2, characterized in that: the main drive mechanism is connected to the drive motor and formed with a drive shaft with external threads and installed on the base body The base body is slidably arranged on a screw parallel to the drive shaft; the auxiliary drive mechanism is composed of a drive shaft connected to the drive motor and formed with external threads and mounted on the suction nozzle. The suction nozzle is slidably arranged on a screw rod parallel to the drive shaft. 8. A working method of the self-cleaning device for the filter screen of the cabinet type air conditioner as claimed in claim 6, characterized in that: after the cleaning work is started, the vacuum cleaner starts to run, firstly, the motor drives the auxiliary drive shaft to rotate, thereby through the auxiliary worm gear and the auxiliary The function of the rack drives the suction nozzle to move up or down on the substrate. At this time, the dust cleaned by the brush is discharged from the suction port through the connecting channel by the vacuum cleaner. When the suction nozzle moves to the edge of the filter, the worm gear touches the blocking protrusion. At this time, the motor reverses, the suction nozzle moves in the opposite direction, and stops after a week of vertical cleaning. The drive motor drives the main drive shaft to rotate, and the main worm wheel rotates, so that the substrate is driven to the left or right by the action of the main worm wheel and the main rack. Stop after one position, and then drive the auxiliary drive shaft to rotate by the motor, and continue to work like this until the main worm gear touches the blocking protrusion, the drive motor drives the main drive shaft to rotate in the opposite direction, and continues until it stops working. 9. A self-cleaning device for a filter screen of a cabinet type air conditioner, comprising a suction nozzle mechanism and a filter screen mechanism, characterized in that: the filter screen mechanism is fixed on the outside of the air duct volute of the air conditioner, and includes a filter screen and a filter screen frame; The suction nozzle mechanism is attached to the outer side of the filter screen, and includes a base body placed horizontally on the filter screen and a suction nozzle arranged on the base body. The base body is driven by the main drive mechanism to move on and off the filter screen along the track. Sliding between the two sides, the suction nozzle is driven by the secondary drive mechanism to slide along the base body between the left and right sides of the filter to suck the dust attached to the filter; the suction nozzle is a hollow cavity The closed structure of the body, the side close to the filter screen is provided with a dust suction port and a brush corresponding to the dust suction port, and the other side is provided with a connection channel port, and the suction nozzle is connected to the air conditioner through a connection channel. Vacuum cleaner connection.

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