CN102829538A - Filter screen cleaning device and indoor air conditioning unit - Google Patents

Abstract

The invention discloses a filter screen cleaning device and an air conditioner indoor unit. The filter screen cleaning device comprises: a filter screen, a movable filter screen mechanism supporting the filter screen and driving the filter screen to move in the horizontal direction, and fixedly connected with the movable filter screen mechanism. Dust suction mechanism for cleaning the filter. The present invention reduces the size of the dust-absorbing contact adsorption surface by controlling the mutual movement of the movable filter mechanism and the dust-absorbing mechanism, thereby concentrating the adsorption force of the dust-absorbing cavity to suck away the dust on the surface of the filter mesh. The dust tank, on the one hand, can solve the problems of limited installation space caused by the back-and-forth movement of a long section of dust-absorbing hose outside the conventional dust-absorbing head and reduce the dust-absorbing force. The whole device of the present invention has simple structure, easy control, low cost, and dust absorption It has good reliability and does not affect the appearance of existing air conditioners. At the same time, it can also be installed as an accessory on conventional air conditioners without cleaning and dust removal devices, bringing more choices to users.

Description

Filter cleaning device and air conditioner indoor unit

technical field

The invention relates to the technical field of air conditioners, in particular to a filter screen cleaning device for an indoor unit of a cabinet type air conditioner and an air conditioner indoor unit provided with the filter screen cleaning device.

Background technique

Usually, a household cabinet air conditioner is composed of a split indoor unit and an outdoor unit. The indoor unit is installed in the user's room and runs for a long time, causing various dust and impurities to accumulate in the air filter on the air inlet side of the air conditioner. The performance has a negative impact, and it also affects the user's healthy use environment.

Conventional air conditioners usually need to manually disassemble the filter screen for cleaning, which brings great inconvenience to users due to various conditions such as installation location. Thereby the air conditioner with automatic cleaning filter screen device arises at the historic moment. The self-cleaning devices for filter screens currently used mainly include the following three types:

1. Use a high-voltage electrostatic field to clean and remove dust, and install a device with a high-voltage electrostatic field on the air inlet side of the air conditioner to absorb the dust on the surface of the filter through the electrostatic field generated by the high voltage;

2. Apply the most common dust removal method of brush mechanical cleaning. By designing a filter mechanism and a brush mechanism that can move in contact with each other, the cleaning function is realized by using the contact friction between the two;

3. Use the cleaning method of washing with water.

However, the above three types of dust removal methods have the following defects:

The first type of electrostatic precipitator, due to the limitation of the internal installation space of the air conditioner, it is often impossible to install this kind of device. In addition, the indoor unit using this kind of device generally has a high cost.

The second type of dust removal device is the most widely used, but due to the poor reliability of long-term use of this type of device, especially for special impurities such as fluff, hair and other impurities that cannot be completely and effectively removed.

The third type of water washing cleaning device needs to add a water pump on the one hand, and on the other hand, the structure of the whole device is relatively complicated, and the corresponding control method is also relatively cumbersome.

Contents of the invention

The main purpose of the present invention is to provide a filter screen cleaning device and an air conditioner indoor unit with simple structure, low cost and good reliability.

In order to achieve the above object, the present invention proposes a filter screen cleaning device, comprising: a filter screen, a movable filter screen mechanism that supports the filter screen and drives the filter screen to move horizontally, and is fixedly connected to the movable filter screen mechanism . A dust suction mechanism for cleaning the filter screen.

Preferably, the filter screen is installed on the air intake side of the heat exchanger of the air conditioner indoor unit through the movable filter screen mechanism.

Preferably, the movable filter mechanism includes:

a supporting frame, arranged on the inner side of the filter screen;

The left reel and the right reel are fixedly connected with the left and right ends of the filter net respectively, the upper and lower ends of the left reel are connected to the upper and lower ends of the left side of the support frame in corresponding rotation, and the upper and lower ends of the right reel are connected in rotation correspondingly At the upper and lower ends of the right side of the supporting frame; the lower ends of the left scroll and the right scroll are respectively connected with stepper motors, which are driven by the stepper motors to retract and retract the filter net to move the filter net horizontally;

The rotating shaft is arranged in the middle of the support frame and is used to guide and support the filter net;

The upper fixing frame and the lower fixing frame are used for fixing the support frame.

Preferably, the support frame includes a left support frame and a right support frame, the upper and lower ends of the left scroll shaft are connected to the upper and lower ends of the left side of the left support frame for corresponding rotation, and the upper and lower ends of the right scroll shaft are correspondingly connected for rotation. Describe the upper and lower ends of the right side of the right support frame.

Preferably, there are two rotating shafts, which are respectively connected to the right end of the left support frame and the left end of the right support frame.

Preferably, the dust suction mechanism includes: a dust collection box seat, a dust collection box cover, a film track and a transmission mechanism, wherein:

The dust collection box seat is arranged in the middle of the outside of the filter screen, and the upper and lower ends of the dust collection box seat are respectively fixed on the upper and lower fixing frames; the inside of the dust collection box seat is provided with a suction Dust trough, the lower part of the dust suction box seat is provided with a dust suction nozzle connected to the dust suction trough, and the dust suction nozzle is externally connected to a dust suction fan through a dust suction hose;

The dust collection box cover is fixed on the outside of the dust collection box seat, and a gap is reserved between the two for the film track to shuttle up and down;

The film crawler is driven by the transmission mechanism to shuttle up and down inside and outside the dust collection box seat; the film crawler cooperates with the dust suction groove inside the dust collection box seat to form a closed dust collection cavity; A suction port communicated with the dust suction chamber and in contact with the surface of the filter screen is provided on the film track.

Preferably, the dust suction mechanism further includes: a fixed dust suction head and a fixed dust suction head cover, wherein:

The dust suction fixed head is bonded to the inner side of the film crawler, and the contact surfaces of the film crawler and the dust suction fixed head are respectively provided with waist-shaped holes communicating with the dust suction groove on the dust suction box seat;

The dust suction fixed head cover is arranged on the inner side of the dust suction fixed head, and is connected with the dust suction fixed head through plug-in fit; the suction port is arranged on the upper end surface of the dust suction fixed head cover.

Preferably, the suction port is rectangular, and the upper and lower parts of the suction port are respectively bonded with a brush and a rubber strip for cleaning dust on the filter.

Preferably, the dust suction mechanism further includes a sealing strip, one is provided on the left and right sides of the dust collection box seat, and is bonded to the dust collection box seat for sealing the film track.

Preferably, the dust collection mechanism also includes an upper end cover of the dust collection box and a lower end cover of the dust collection box; the upper end cover of the dust collection box is fixed on the upper end of the dust collection box seat and the dust collection box cover; The lower end cover is fixed on the lower end of the dust collection box seat, and fixes the transmission mechanism.

The present invention also proposes an air conditioner indoor unit, including the above-mentioned filter net cleaning device.

A filter cleaning device and an air conditioner indoor unit proposed by the present invention, by controlling the mutual movement of the movable filter mechanism and the dust suction mechanism, reduce the size of the dust suction contact adsorption surface, thereby concentrating the suction force of the dust suction chamber to suck away the filter screen Dust on the surface, because there is a dust suction groove on the dust collection box seat, on the one hand, it can solve the problems of the installation space limitation caused by the back and forth movement of the conventional dust suction head with a long section of dust suction hose and the reduction of the dust absorption force. The present invention The whole device has simple structure, easy control, low cost, good dust adsorption reliability, and does not affect the appearance of existing air conditioners. Many options.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the cabinet type air conditioner indoor unit with filter screen cleaning device in the embodiment of the present invention;

Fig. 2 is a partially exploded schematic diagram of the structure of the indoor unit of the air conditioner shown in Fig. 1;

Fig. 3 is a schematic diagram of assembly and disassembly of the movable filter mechanism shown in Fig. 1 and the filter;

Fig. 4 is an exploded view of the dust suction mechanism shown in Fig. 1;

Figure 5a is a front view of the dust suction mechanism in Figure 1;

Fig. 5b is a side view of the dust suction mechanism in Fig. 1;

Fig. 5c is a sectional view along A-A direction in Fig. 5a;

Fig. 6 is a schematic diagram of the three-dimensional structure of the dust collection box seat in Fig. 4;

Fig. 7a is the front view of the dust collection box seat in Fig. 4;

Fig. 7b is a side view of the dust collection box seat in Fig. 4;

Fig. 7c is a sectional view along B-B direction in Fig. 7a;

Figure 8a is a partial front view of the film track in Figure 4;

Fig. 8b is a partial perspective view of the film track in Fig. 4;

Figure 8c is a partial side view of the film track of Figure 4 .

In order to make the technical solution of the present invention clearer and clearer, it will be further described below in conjunction with the accompanying drawings.

Detailed ways

Please refer to FIG. 1 and FIG. 2. FIG. 1 is a schematic diagram of the overall structure of an indoor unit of a cabinet air conditioner with a filter cleaning device in an embodiment of the present invention; FIG. 2 is a schematic diagram of a partial exploded structure of FIG. 1.

As shown in Figures 1 and 2, a filter cleaning device proposed in this embodiment is installed on the indoor unit body 100 of a cabinet air conditioner, and the filter cleaning device includes: a filter 5, a support for the filter 5 And drive the movable filter mechanism 1 which moves the filter 5 horizontally, and the dust suction mechanism 2 which is fixedly connected with the movable filter 1 and used for cleaning the filter 5 .

Wherein, the filter screen 5 is installed on the air inlet side of the air conditioner indoor unit body 100 through the movable filter screen mechanism 1, specifically installed on the back plate of the air inlet side of the air conditioner indoor unit heat exchanger, and the dust suction mechanism 2 Connect the vacuum fan externally through the vacuum hose.

Specifically, as shown in Fig. 2 and Fig. 3, Fig. 3 is an assembly exploded schematic view of the movable screen mechanism 1 and the filter screen 5 shown in Fig. 1, the movable screen mechanism 1 includes: a left support frame 3 and a The support frame that right support frame 4 forms, filter screen 5, the left scroll 6 that links to each other with filter screen 5 two ends and right scroll 7, the rotating shaft 8 that filter screen 5 is guided and supported usefulness, to left scroll 6 and right scroll 7 Driven stepper motor 9 fixes the upper mount 10 and the lower mount 11 of the left support frame 3 and the right support frame 4 .

Wherein, the support frame is arranged on the inner side of the filter screen 5 for supporting and fixing the filter screen 5 .

Left reel 6 and right reel 7 are respectively fixedly connected with the left and right ends of described screen pack 5, and the upper and lower ends of left reel 6 are connected to the upper and lower ends of the left side of described supporting frame correspondingly, and the upper and lower ends of right reel 7 The ends are correspondingly rotatably connected to the upper and lower ends of the right side of the support frame; the corresponding ends of the left support frame 3 and the right support frame 4 are provided with fixed shaft holes and shaft pins for installing and fixing the left scroll 6 and the right scroll 7 .

The lower end shaft cores of the left scroll 6 and the right scroll 7 are respectively connected with a stepping motor 9, and the two stepping motors 9 are installed and fixed on the left support frame 3 and the right support frame 4 respectively, and the left scroll 6 and the right scroll 7 Driven by respective stepping motors 9, the filter screen 5 can be moved horizontally by retracting the filter screen 5.

There are two rotating shafts 8, which are respectively connected to the right side end of the left supporting frame 3 and the left side end of the right supporting frame 4. The surface is distributed with burrs for guiding and fixing, so there is no need for motor drive, and the two rotating shafts 8 are respectively installed and fixed through the upper and lower fixed shaft holes and pivot pins of the right side end of the left support frame 3 and the left side end of the right support frame 4, so that the two rotating shafts 8 can rotate relative to the left support frame 3 and the right support frame 4.

The filter screen 5 is closely attached to the rotating shaft 8, and during the horizontal movement of the filter screen 5, the rotation of the rotating shaft 8 can guide and support the filter screen 5.

According to needs, the above-mentioned rotating shaft 8 can also be provided as one or more.

In the above structure, through the upper fixed frame 10 and the lower fixed frame 11, the whole movable screen mechanism 1 and the filter screen 5 are installed on the back plate of the air inlet side of the heat exchanger of the indoor unit of the air conditioner as a whole.

As shown in Figure 4, Figure 5a, Figure 5b and Figure 5c, Figure 4 is an exploded view of the dust suction mechanism 2 shown in Figure 1; Figure 5a is a front view of the dust suction mechanism 2 in Figure 1; Figure 5b is a diagram 1 is a side view of the suction mechanism 2; FIG. 5c is a cross-sectional view in the direction of A-A in FIG. 5a.

The dust collecting mechanism 2 of this embodiment comprises: a dust collecting box seat 12, a dust collecting box cover 13, a dust collecting box upper end cover 14, a dust collecting box lower end cover 15, a film track 16, a sealing strip 17, a dust collecting fixed head 24, a suction Dust fixed head cover 25 and the driving mechanism that drives film crawler belt 16 to shuttle up and down by upper guide shaft 18, lower guide shaft 19, lower guide shaft 20, drive shaft 21, stepper motor 22 and motor cover 23, wherein:

The dust collection box seat 12 is arranged in the middle part of the outside of the filter screen 5, and the upper and lower ends of the dust suction box seat 12 are respectively fixed on the upper fixed frame 10 and the lower fixed frame 11; The inner side of the dust suction groove 12a is provided with, as shown in Fig. 6, Fig. 7a, Fig. 7b and Fig. 7c, the top of the dust collection box seat 12 is provided with an upper guide shaft 18 for guiding the film crawler belt 16, and the bottom is provided with a pair of Film caterpillar 16 guides and drives lower guide shaft 19, lower guide shaft 20, drive shaft 21 for use. The lower part of the dust collection box seat 12 is provided with a dust suction nozzle 12b communicating with the dust suction groove 12a, and the dust suction nozzle 12b is externally connected to a dust suction fan through a dust suction hose. A convex table surface 12c is also provided on the side of the dust collection box seat 12 .

The dust collection box cover 13 is fixed on the outside of the dust collection box seat 12, and there is a gap between the two for the shuttle belt 16 to shuttle up and down. To the sealing protection.

The film crawler 16 is driven by the transmission mechanism to shuttle up and down inside and outside of the dust collection box seat 12; cavity; the film crawler 16 is provided with a strip-shaped suction port 25c that communicates with the dust suction chamber and contacts the surface of the filter screen 5, as shown in Figure 8a.

Wherein, the above-mentioned dust collection box upper end cover 14 is fixedly installed with the dust collection box seat 12 and the dust collection box cover 13 at the same time, which can effectively seal and protect the film crawler belt 16 .

The lower end cover 15 of the above-mentioned dust collection box is fixed with the dust collection box seat 12 to completely seal and fix the lower guide shaft 19, the lower guide shaft 20, the drive shaft 21 and the film crawler belt 16.

Above-mentioned film caterpillar 16 carries out cooperative contact with dust collection box seat 12 through upper guide shaft 18, lower guide shaft 19, lower guide shaft 20, drive shaft 21. Simultaneously film caterpillar 16 inboards carry out bonding and fixing with dust suction fixing head 24 again. Waist-shaped holes 16a (as shown in Figure 8b) and 24a (as shown in Figure 8a) are correspondingly opened on the surface where the film crawler 16 contacts with the suction fixed head 24. The dust suction grooves 12a on the dust box seat 12 communicate with each other, and simultaneously, both sides of the film crawler belt 16 are also provided with several rectangular holes 16b.

The above-mentioned drive shaft 21 is installed and fixed on the preset installation space on the dust collection box seat 12, and its surface is provided with a number of transmission teeth. Rectangular hole 16b carries out engagement transmission, and film caterpillar 16 can shuttle up and down. The above-mentioned stepping motor 22 is installed and fixed with the lower end cover 15 of the dust collection box, and drives the operation of the driving shaft 21 at the same time.

Wherein, the above-mentioned upper guide shaft 18 is installed and fixed on the upper end of the dust collection box seat 12, and can guide and slide the upper end of the film crawler belt 16; On the provided installation space, the film crawler belt 16 is guided and fixed together with the driving shaft 21; the above-mentioned motor cover 23 is fixedly connected with the lower end cover 15 of the dust collection box to protect the stepping motor 22.

In addition, in this embodiment, there are two sealing strips 17, one on the left and right sides of the dust collection box seat 12, and the convex table surface 12c on the side of the dust collection box seat 12 (as shown in Figure 6) Carry out bonding and fixing, reserve the gap that can shuttle up and down for film crawler 16 between two sealing strips 17, can effectively seal the surface that film crawler 16 contacts with dust collection box seat 12 by sealing strip 17.

The dust suction fixed head cover 25 is arranged on the inner side of the dust suction fixed head 24, and is connected with the dust suction fixed head 24 through a plug-in fit; the strip suction port 25c provided on the film track 16 is specifically arranged on the dust suction fixed head cover. 25 upper end face.

As shown in Figure 8a, the suction port 25c is rectangular, and the upper and lower parts of the suction port 25c are respectively bonded with a brush 25a and a rubber strip 25b for cleaning dust on the filter screen 5, as shown in Figure 8c.

In this embodiment, the suction port 25c is arranged on the dust suction fixed head cover 25, and the dust suction fixed head cover 25 is bonded on the film crawler belt 16 through the dust suction fixed head 24. After a long period of time, if the dust-absorbing fixed head cover 25 is damaged, it is only necessary to replace the dust-absorbing fixed head cover 25 with the suction port 25c instead of replacing the entire dust-absorbing mechanism 2, thereby saving costs.

The working principle of the filter screen cleaning device of the present embodiment is as follows:

When the dust on the filter screen 5 needs to be removed, by driving the left and right two reels 6 and 7 end stepper motors 9, the left and right reels 6 and 7 are driven to receive or put the filter screen 5 at the same time, so that the filter screen 5 is horizontal At the same time, the stepper motor 22 of the dust suction mechanism 2 drives the film crawler belt 16 to drive up and down, thereby controlling the dust suction fixed head cover 25 to move up and down on the surface of the filter screen 5, and the dust suction fixed head cover 25 The strip suction port 25c communicated with the dust suction cavity on the upper end face can move up and down in the vertical direction of the filter screen 5 .

Because the dust suction nozzle 12b that the bottom of the dust collection box seat 12 communicates with the dust suction groove 12a is externally connected to the dust suction blower by the dust suction hose, the waist-shaped hole 16a and the dust suction fixed head that are offered on the dust suction groove 12a and the film crawler belt 16 are connected simultaneously. The waist-shaped hole 24a on the 24 communicates, and under the effect of the suction force of the external dust-absorbing fan, the air in the dust-absorbing tank 12a is quickly sucked away, and the whole dust-absorbing cavity is in a negative pressure state. The side of the strip suction port 25c is in sliding contact with the surface of the filter screen 5, and the dust and impurities on the surface of the filter screen 5 are absorbed into the dust suction chamber and taken away by the external exhaust pipe of the dust washing fan.

At the same time, the brush 25a and the rubber strip 25b bonded on the fixed head cover 25 clean the filter screen 5 surface, so that the dust attached to the filter screen 5 surface is loosened so as to be sucked away.

Therefore, the purpose of cleaning the surface of the filter screen 5 is achieved through the horizontal movement of the filter screen 5 and the vertical movement of the strip suction port 25c.

In this embodiment, by controlling the mutual movement of the movable filter screen mechanism 1 and the dust suction mechanism 2, the size of the dust suction contact adsorption surface is reduced, thereby concentrating the suction force of the dust suction cavity to suck away the dust on the surface of the filter screen 5, because the dust suction box seat 12 is provided with a dust suction groove 12a, on the one hand, it can solve the problems of installation space limitation caused by the back and forth movement of a long section of dust suction hose externally connected to the conventional dust suction head and the reduction of dust suction adsorption force. The whole device of the present invention has a simple structure and is easy to control , low cost, good dust adsorption reliability, and does not affect the appearance of existing air conditioners, and can also be added as an accessory to conventional air conditioners without cleaning and dust removal devices, bringing more choices to users.

It should be noted that the filter cleaning device of this embodiment can be applied not only to cabinet air conditioners, but also to split-type, floor-standing air conditioners or other equipment with filters that need to be cleaned.

In addition, the present invention also proposes an air-conditioning indoor unit, which includes a filter net cleaning device, and the filter net cleaning device can refer to the above-mentioned embodiments, which will not be repeated here.

The above is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technical fields , are all included in the scope of patent protection of the present invention in the same way.

Claims (11)

1. A filter screen cleaning device, characterized in that it comprises: a filter screen, a movable filter screen mechanism that supports the filter screen and drives the horizontal direction of the filter screen to move, and is fixedly connected with the movable filter screen mechanism, A dust suction mechanism for cleaning the filter screen. 2 . The filter cleaning device according to claim 1 , wherein the filter is installed on the air inlet side of the air-conditioning indoor unit heat exchanger through the movable filter mechanism. 3 . 3. The filter screen cleaning device according to claim 2, wherein the movable filter screen mechanism comprises: a supporting frame, arranged on the inner side of the filter screen; The left reel and the right reel are fixedly connected with the left and right ends of the filter net respectively, the upper and lower ends of the left reel are connected to the upper and lower ends of the left side of the support frame in corresponding rotation, and the upper and lower ends of the right reel are connected in rotation correspondingly At the upper and lower ends of the right side of the supporting frame; the lower ends of the left scroll and the right scroll are respectively connected with stepper motors, which are driven by the stepper motors to retract and retract the filter net to move the filter net horizontally; The rotating shaft is arranged in the middle of the support frame and is used to guide and support the filter net; The upper fixing frame and the lower fixing frame are used for fixing the support frame. 4. The filter screen cleaning device according to claim 3, wherein the support frame comprises a left support frame and a right support frame, and the upper and lower ends of the left scroll shaft are correspondingly rotatably connected to the left side of the left support frame. The upper and lower ends, the upper and lower ends of the right reel are correspondingly rotated and connected to the upper and lower ends on the right side of the right support frame. 5 . The filter cleaning device according to claim 4 , wherein there are two rotating shafts, which are respectively connected to the right end of the left support frame and the left end of the right support frame. 6. The filter cleaning device according to claim 3, 4 or 5, characterized in that, the dust suction mechanism comprises: a dust collection box seat, a dust collection box cover, a film crawler and a transmission mechanism, wherein: The dust collection box seat is arranged in the middle of the outside of the filter screen, and the upper and lower ends of the dust collection box seat are respectively fixed on the upper and lower fixing frames; the inside of the dust collection box seat is provided with a suction Dust trough, the lower part of the dust suction box seat is provided with a dust suction nozzle connected to the dust suction trough, and the dust suction nozzle is externally connected to a dust suction fan through a dust suction hose; The dust collection box cover is fixed on the outside of the dust collection box seat, and a gap is reserved between the two for the film track to shuttle up and down; The film crawler is driven by the transmission mechanism to shuttle up and down inside and outside the dust collection box seat; the film crawler cooperates with the dust suction groove inside the dust collection box seat to form a closed dust collection cavity; A suction port communicated with the dust suction chamber and in contact with the surface of the filter screen is provided on the film track. 7. The filter cleaning device according to claim 6, characterized in that, the dust suction mechanism further comprises: a suction fixed head and a dust suction fixed head cover, wherein: The dust suction fixed head is bonded to the inner side of the film crawler, and the contact surfaces of the film crawler and the dust suction fixed head are respectively provided with waist-shaped holes communicating with the dust suction groove on the dust suction box seat; The dust suction fixed head cover is arranged on the inner side of the dust suction fixed head, and is connected with the dust suction fixed head through plug-in fit; the suction port is arranged on the upper end surface of the dust suction fixed head cover. 8 . The filter cleaning device according to claim 7 , wherein the suction port is rectangular, and the upper and lower parts of the suction port are respectively bonded with a brush and a rubber strip for cleaning dust on the filter screen. 9. The filter cleaning device according to claim 6, characterized in that, the dust suction mechanism also includes a sealing strip, one is provided on each of the left and right sides of the dust collection box seat, and is connected with the dust collection box seat. Bonding for sealing the film track. 10. The filter screen cleaning device according to claim 6, wherein the dust suction mechanism further comprises an upper end cover of a dust collection box and a lower end cover of a dust collection box; the upper end cover of the dust collection box is fixed on the dust suction box The upper end of the box seat and the dust collection box cover; the lower end cover of the dust collection box is fixed on the lower end of the dust collection box seat, and fixes the transmission mechanism. 11. An air conditioner indoor unit, characterized in that it comprises the filter screen cleaning device according to any one of claims 1-10.

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