CN101256008B - Indoor set of air-conditioner with filtering net dust collector - Google Patents

Abstract

The invention belongs to the field of air conditioners, in particular to an air conditioner indoor unit with a filter net dedusting device, comprising a casing, an air inlet and an air outlet are arranged on the casing, an annular heat exchanger is arranged inside the casing, and an annular heat exchanger is arranged on the casing. There is a fan around the center of the fan, and the exhaust port of the fan is connected to the air outlet of the casing, and a dust filter is provided on the outside of the annular heat exchanger; wherein: there are rollers at both ends of the filter to drive the filter to move; A dust suction pipe consisting of a spiral grooved pipe and an axial straight groove pipe nested in each other is arranged close to the filter screen. A motor that rotates the helically grooved tube. The invention adopts air-tight straight grooved pipes and spiral grooved pipes which are nested with each other to form air suction holes, the wind force is concentrated, and the dust can be efficiently removed; the filter screen can be fully dusted without opening the outer cover of the indoor unit.

Description

Air conditioner indoor unit with filter net dust removal device

technical field

The invention relates to a dust removal device, in particular to an air conditioner indoor unit with a filter net dust removal device.

Background technique

Existing air-conditioning indoor unit as shown in Fig. 1, 2, has casing 4, is provided with air inlet 8 on the top and front of casing 4, and the bottom front side slope of casing is provided with the air outlet that has deflector 3 9. An annular heat exchanger 6 is arranged inside the casing, and a fan 7 is arranged around the center of the annular heat exchanger 6 . The air outlet of the fan 7 is connected to the air outlet 9 of the casing 4 . In order to prevent dust from invading the inside of the body, an air filter 5 is provided between the heat exchanger 6 and the casing, and the indoor air is sucked in by the fan 7, and the sucked air exchanges heat with the heat exchanger 6 to become cold or hot wind. Air outlet 9 blows out indoors. The dust floating in the air is removed by the air filter 5 arranged between the air inlet 8 and the heat exchanger 6 . The air filter is detachably mounted on the filter frame so that the attached dust can be removed. But a large number of users often neglect to remove the accumulated dust on the air filter 5, resulting in poor air-conditioning effect and wasting electric energy in vain. Even if it is noticed that the wall-mounted indoor unit should be cleaned in time, it is very inconvenient to clean because the wall-mounted indoor unit is generally hung high on the wall. Therefore, an air conditioner indoor unit capable of automatically removing dust adhering to the air filter without removing the air filter from the filter frame has been proposed.

Patent document 200510120265.6 provides an air conditioner, which has an indoor unit, the indoor unit accommodates a heat exchanger in the main body, and a fan that blows the air heat-exchanged by the heat exchanger into the room. This air conditioner is characterized in that, Equipped with: an air filter installed on the above-mentioned main body on the upstream side of the above-mentioned heat exchanger; A driving source for driving the suction nozzle, an exhaust device communicating with the suction nozzle and suctioning and discharging dust together with air, and a communication device communicating the exhaust device with the suction nozzle.

The structure of the suction nozzle is shown in FIG. 3. The suction nozzle 14 is formed to be long and curved in the middle, and a slit-shaped suction opening of a predetermined width is provided on the side facing the air filter. In addition, inside the suction nozzle 14, a film-like belt 19 of predetermined width that slides along the suction port and forms an annular shape is accommodated, and a suction hole 19a of a predetermined width is formed on the belt 19. The dust removal efficiency brush 21 is provided adjacent to the suction hole 19a. The suction hole 19a is formed at a position overlapping the suction port, and its length is set to, for example, 1/16 of the entire length of the suction port. The belt 19 is configured to be freely driven in any direction up and down by a stepping motor 20 fixed to the suction nozzle 14 . As described above, the belt 19 is formed in an endless shape, but a configuration in which a reel or the like is provided and the belt 19 is wound thereon may also be adopted. As can be seen from the figure, the suction nozzle 14 is a long and curved box body with a slit-shaped suction port of a specified width facing the air filter side. In order to concentrate the suction, a film with a suction hole 19a The strip 19 is movably attached to the slit-shaped suction port, so that the air is concentrated in the suction hole 19a to increase the suction force. However, how to ensure the sealing between the flexible and movable film-like belt 19 and the rigid box body is a major problem for the performance of the device. In fact, the dust suction device provided by this patent has not been well resolved due to the sealing problem. When working, the suction force of the suction hole 19a is very small, and the dust suction speed is very slow.

How to provide a high-efficiency dust collection device is a difficult problem that the current air-conditioning industry is working hard to solve.

Contents of the invention

The technical problem to be solved by the present invention is to provide an air-conditioning indoor unit with a filter net dust removal device with high dust collection efficiency in view of the above-mentioned shortcomings of the prior art.

Realize the technical scheme of the present invention as follows:

An air-conditioning indoor unit with a filter net dust removal device, comprising: a casing, an air inlet and an air outlet are arranged on the casing, an annular heat exchanger is arranged inside the casing, and an annular heat exchanger is arranged at the surrounding center There is a fan, the air outlet of the fan is connected to the air outlet of the casing, and a dust removal filter is arranged on the outside of the annular heat exchanger; wherein:

The two ends of the filter screen are provided with rollers that drive the filter screen to move;

A dust suction pipe with a spiral groove pipe and an axial straight groove pipe nested in each other is arranged close to the filter screen, the end of the straight groove pipe of the dust suction pipe is provided with a hose connected to the vacuum cleaner, and the spiral groove pipe The end of the tube is provided with a motor that rotates the helically grooved tube.

The air-conditioning indoor unit with a filter dust removal device, wherein: the dust removal filter is a flexible filter; rollers are provided at both ends of the flexible filter to drive the flexible filter to move.

The air-conditioning indoor unit with a filter dust removal device, wherein: the two sides of the flexible filter are provided with evenly arranged through holes, and the two ends of one of the rollers arranged at the two ends of the flexible filter are provided with The ratchet is connected with a drive motor, and the ratchets of the ratchet are adapted to the through holes evenly arranged on both sides of the flexible filter.

The air-conditioning indoor unit with a filter dust removal device, wherein: the flexible filter is fixed and wound on the rollers at both ends.

In the air-conditioning indoor unit with a filter dust removal device, a plurality of supporting rollers are arranged under the flexible filter.

The air-conditioning indoor unit with a filter dust removal device, wherein: the dust removal filter is a rolling door-type rigid filter with a supporting frame; There are rollers that drive the filter to move.

The air-conditioning indoor unit with a filter dust removal device, wherein: the rolling door-type rigid filter with a supporting frame is composed of a plurality of mutually hinged rigid frames and a filter laid on the rigid frame .

The air-conditioning indoor unit with a filter dust removal device, wherein: the rollers arranged at both ends of the rolling door-type rigid filter with a supporting frame, one of the two ends is provided with a ratchet, and is connected to a driving motor , the ratchet of the ratchet fits with the supporting frame.

The air-conditioning indoor unit with a filter dust removal device, wherein: the rolling door-type rigid filter with a support frame is fixed and wound on the rollers at both ends.

In the air-conditioning indoor unit with a filter dust removal device, a plurality of support rollers are arranged under the rolling door-type rigid filter with a support frame.

The air-conditioning indoor unit with a filter dust removal device, wherein: the dust suction pipe of the spiral grooved pipe and the axial straight grooved pipe nested in each other, wherein the spiral grooved pipe is sleeved outside the straight grooved pipe.

The air-conditioning indoor unit with a filter dust removal device, wherein: the spiral groove of the spiral groove pipe is provided with bristles.

The air-conditioning indoor unit with filter dust removal device, wherein: the length of the dust suction pipe is slightly longer than the width of the filter, and under the condition that the width of the filter is 800mm and the diameter of the spiral grooved pipe is 40mm, the The number of turns of the spiral groove is 1-4 turns.

In the air-conditioning indoor unit with a filter dust removal device, fixing frames are arranged on both sides of the air-conditioning indoor unit, and the dust suction pipe is fixed on the fixing frames through brackets at both ends.

In the air-conditioning indoor unit with a filter dust removal device, wherein: the spiral grooved pipe and the straight grooved pipe are airtightly matched with each other.

The present invention has the advantages of: adopting airtight straight grooved pipes and spiral grooved pipes nested in each other, the intersection of the straight grooves and the spiral grooves forms an air suction hole, and the appropriate size of the air suction hole can be designed according to the power of the vacuum cleaner (that is, the groove width ), so that the wind is concentrated and can remove dust efficiently; by rotating the spiral grooved pipe, the dust suction hole moves horizontally, and the filter screen moves vertically by moving the filter screen, so that the filter screen can be fully dust-removed without opening the cover of the indoor unit.

In order to have a further understanding of the structural features and effects of the present invention, specific embodiments are listed and described in detail as follows in conjunction with the accompanying drawings.

Description of drawings

FIG. 1 is a schematic diagram of the appearance of an existing air conditioner indoor unit.

Fig. 2 is a schematic cross-sectional view of an existing air conditioner indoor unit.

Fig. 3 is a schematic diagram of a suction nozzle of an existing air conditioner indoor unit dust removal device.

Fig. 4 is a cross-sectional view of Embodiment 1 of an air conditioner indoor unit with a filter dust removal device according to the present invention.

Fig. 5 is a schematic diagram of the installation of the dust suction pipe of the present invention in the air conditioner indoor unit of the first embodiment.

Fig. 6 is a cross-sectional view of Embodiment 2 of the indoor unit of the air conditioner with the filter dust removal device of the present invention.

Fig. 7 is a schematic diagram of the installation of the dust suction pipe of the present invention in the air conditioner indoor unit of the second embodiment.

Fig. 8 is an exploded view of the dust suction pipe of the present invention.

Fig. 9 is an assembly diagram of the dust suction pipe of the present invention.

Fig. 10 is a diagram showing the formation of dust suction holes in the present invention.

Detailed ways

Embodiment one

Figure 4 is a cross-sectional view of an embodiment of an air-conditioning indoor unit with a filter dust removal device provided by the present invention. It can be seen from the figure that the air-conditioner indoor unit with a filter dust removal device includes a casing 10, The casing 10 is provided with an air inlet 11 and an air outlet 12. An annular heat exchanger 13 is arranged inside the casing 10. A fan 15 is arranged around the center of the annular heat exchanger 13. The air outlet of the fan 15 is connected to the machine. The air outlet 12 of the shell 10 is provided with an air deflector 16 on the air outlet, and a dust removal filter 17 is arranged on the outside of the annular heat exchanger 13; the dust removal filter 17 of the present invention is a rolling door type with a supporting frame. The rigid filter screen of the rolling door type with the support frame is provided with a roller 18 that drives the rigid filter screen of the rolling door type with the support frame to move; the rolling door type with the support frame The rigid filter screen is composed of a plurality of mutually hinged rigid frames 171 and a filter screen 172 laid on the rigid frames.

A ratchet 181 is provided at one of the two ends of the rollers 18 at both ends of the rigid filter, and is connected to a drive motor (not shown in the figure). Nested side ends. The driving motor drives the roller shaft 18 provided with ratchets to rotate, and the ratchets 181 arranged at both ends of the roller shaft drive the rolling door-type rigid filter screen with a support frame to move longitudinally.

Since the heat exchanger 13 is ring-shaped, a plurality of support rollers 25 are provided below the hard filter screen 17 of the rolling shutter type with a support frame. The rigid filter screen 17 of rolling door type with a supporting frame is bent.

Embodiment two

Figure 6 is a cross-sectional view of another air-conditioning indoor unit with a filter dust removal device provided by the present invention. It can be seen from the figure that the air-conditioner indoor unit with a filter dust removal device includes a casing 10 and a machine body The casing 10 is provided with an air inlet 11 and an air outlet 12, and an annular heat exchanger 13 is arranged inside the casing 10, and a fan 15 is arranged around the center of the annular heat exchanger 13, and the air outlet of the fan 15 is connected to the casing The air outlet 12 of 10 is provided with an air deflector 16 on the air outlet, and a dust filter 47 is provided on the outside of the annular heat exchanger 13; the dust filter 47 in this embodiment is a flexible filter; The two ends of the flexible filter screen 47 are provided with rollers 48 that drive the flexible filter screen to move; both sides of the flexible filter screen are provided with evenly arranged through holes 471, and the rollers 48 located at the two ends of the flexible filter screen A ratchet 481 is provided at both ends of one of them, and is connected with a drive motor. The ratchets of the ratchet are adapted to the through holes 471 evenly arranged on both sides of the flexible filter. The driving motor drives the roller 48 provided with the ratchet to rotate, and the ratchet arranged at both ends of the roller drives the flexible filter to move axially.

Since the heat exchanger 13 is annular, a plurality of support rollers 45 are provided under the flexible filter 47 . To make the flexible filter net 47 in a bent shape.

Embodiment three

The difference between this embodiment and the second embodiment lies in that the structure of the flexible filter is different. The flexible filter screen described in Embodiment 2 is an annular filter screen, and through holes are arranged on both sides of the filter screen, and ratchets are provided at both ends of one of the rollers 48, and the ratchets of the ratchet are connected with the flexible filter screen. The through-holes on both sides are snapped together. The driving motor drives the roller 48 provided with the ratchet to rotate, and the ratchet drives the flexible filter to move axially. Since the heat exchanger 13 is annular, a plurality of support rollers 45 are provided under the flexible filter 47 . To make the flexible filter net 17 in a bent shape.

In this embodiment, in order to reduce the ratchet wheels at both ends of the supporting roller and the roller, the flexible filter is fixed and wound on the rollers at both ends.

Fig. 8 and Fig. 9 are an exploded view and an assembly view of the dust suction pipe of the present invention. As can be seen from the figure, the dust suction pipe of the present invention is arranged close to the filter screen 17 by the dust suction pipe 30 of the spiral grooved pipe 31 and the axial straight groove pipe 32 which are nested in each other, and the straight groove pipe 32 of the dust suction pipe 30 The end is provided with a hose 33 connected to the vacuum cleaner, and the end of the spiral grooved pipe 31 is provided with a motor 34 for rotating the spirally grooved pipe. The spiral grooved pipe 31 is sleeved on the outside of the straight grooved pipe 32 . And the spiral grooved pipe and the straight grooved pipe are airtightly matched with each other. The air-tight fit means that the two can rotate after they are sheathed, but no air can leak except for the suction hole 36 formed at the intersection of the spiral groove and the straight groove.

In order to improve the dust collection effect, bristles 35 are provided on the spiral groove of the spiral groove pipe. Rotating helical tube, with the bristle 35 of filter screen 17 or 47 contacts the effect of brush, the dust on the filter screen 17 or 47 is brushed off, then by the suction hole on the suction pipe 30 dust is sucked away. Therefore the straight groove on the straight groove pipe 32 should face filter screen 17 or 47.

Regarding the determination of the number of turns of the spiral groove:

It is generally believed that the smaller the suction holes and the fewer the number, the better the dust absorption effect. Therefore, it is recommended to use a dust suction hole, that is, no matter where the spiral groove tube rotates, there is only one intersection between the spiral groove and the straight groove. To ensure this condition, the number of turns of the helical groove on the entire length is one turn. The result is a large helix angle for the helical grooves. Now take the diameter of the spiral grooved pipe as 40mm and the axial length of the spiral groove as 800mm as an example. The width is set to 3mm. Then the area of dust suction hole F=3 ² /cos81°04'=57.12mm ² ; if the number of turns increases, the helix angle decreases, and the area of single hole decreases, but the number of holes increases, and the total area increases. The calculation structure is now listed as follows:

Number of turns Helix angle α Dust suction hole area F(mm ² ) The number of suction holes Total area (mm ² ) Percentage of increase in total area (%) 1 81°04' 57.12 1 57.12 2 72°34' 30 2 60 5 3 64°45' 21.1 3 63.3 5.5 4 58°51' 16.9 4 67.6 6.8 5 51°51' 14.56 5 72.8 7.8

It can be seen from the results in the table that the increase of the total area of the suction hole is not directly proportional to the increase of the number of turns. Therefore, if the power and noise of the vacuum cleaner allow, the number of turns of the spiral groove can be appropriately increased. Increasing the number of turns can increase the number of turns. The number of dust holes, and the dust suction holes are evenly distributed on the suction pipe, which is conducive to improving efficiency and reducing dust collection time.

When carrying out filter dust removal work, the controller controls the driving motor at the end of the roller to drive the roller 18 or 48 to rotate at an angle, the size of which should be such that the moving distance of the flexible filter 17 or 47 is less than or equal to one time of the dust suction pipe Dust width. Then, the controller controls the motor 34 at the end of the spiral grooved pipe 31 of the dust suction pipe 30 to rotate once. For the spiral grooved pipe with only one turn on the entire length, a slower rotating speed should be selected so that the dust suction hole can move once at a certain speed on the entire length. If a multi-turn spiral tube is used, the rotating speed can be doubled under the condition that the moving speed of the dust suction hole remains unchanged.

5 and 7 are schematic diagrams of the installation of the dust suction pipe of the present invention in the indoor unit of the air conditioner. Fixing frames 40 are provided on both sides of the indoor unit of the air conditioner, and the dust suction pipe is fixed on the fixing frames 40 through brackets 41 at both ends.

The length of the dust suction pipe is slightly longer than the width of the filter screen. Under the condition that the width of the filter screen is 800 mm and the diameter of the spiral groove tube is 40 mm, it is recommended that the number of turns of the spiral groove be 1-4.

Claims (15)

1. An air-conditioning indoor unit with a filter screen dust removal device, the air-conditioning indoor unit is provided with an organic casing, the casing is provided with an air inlet and an air outlet, and an annular heat exchanger is arranged in the casing, and the casing is provided with an annular heat exchanger. A fan is provided around the center of the annular heat exchanger, the air outlet of the fan is connected to the air outlet of the casing, and a dust filter is provided outside the annular heat exchanger; it is characterized in that: Rollers that drive the filter to move are provided at both ends of the filter; A dust suction pipe consisting of a spiral groove pipe and an axial straight groove pipe nested in each other is arranged close to the filter screen, the end of the straight groove pipe of the dust suction pipe is provided with a hose connected to the vacuum cleaner, and the spiral groove The end of the tube is provided with a motor that rotates the helically grooved tube. 2. The air-conditioning indoor unit with filter dust removal device according to claim 1, characterized in that: the dust filter is a flexible filter; two ends of the flexible filter are provided to drive the flexible filter to move roller. 3. The air-conditioning indoor unit with filter dust removal device according to claim 2, characterized in that: the two sides of the flexible filter are provided with evenly arranged through holes, and the rollers arranged at both ends of the flexible filter Two ends of one of them are provided with a ratchet, which is connected with a drive motor, and the ratchets of the ratchet are adapted to the evenly arranged through holes on both sides of the flexible filter. 4. The air-conditioning indoor unit with filter dust removal device according to claim 2, characterized in that: said flexible filter is wound and fixed on the rollers at both ends thereof. 5. The air-conditioning indoor unit with filter dust removal device according to claim 2, or 3, or 4, wherein a plurality of supporting rollers are arranged under the flexible filter. 6. The air-conditioning indoor unit with filter dust removal device according to claim 1, characterized in that: the dust removal filter is a rolling door-type rigid filter with a support frame; Both ends of the rigid filter screen are provided with rollers that drive the filter screen to move. 7. The air-conditioning indoor unit with a filter dust removal device according to claim 6, characterized in that: the rolling door-type rigid filter with a support frame is made of a plurality of mutually hinged rigid frames and laid on the It is composed of a filter screen on a rigid frame. 8. The air-conditioning indoor unit with a filter dust removal device according to claim 6, characterized in that: the rollers arranged at both ends of the rolling door-type rigid filter with a support frame, one of the two ends is set There is a ratchet, which is connected with a drive motor, and the ratchets of the ratchet are fitted with the supporting frame. 9 . The air conditioner indoor unit with filter dust removal device according to claim 6 , characterized in that: the rolling door-type rigid filter with a support frame is fixed and wound on the rollers at both ends. 10. The air-conditioning indoor unit with a filter dust removal device according to claim 6, or 7, or 8, or 9, characterized in that: there is a rolling door-type rigid filter with a support frame. Multiple support rollers. 11. The air-conditioning indoor unit with a filter dust removal device according to claim 1, characterized in that: the dust suction pipes of the spiral grooved pipe and the axial straight grooved pipe nested in each other, the spiral grooved pipe sleeve Located on the outside of the straight grooved pipe. 12. The indoor unit of an air conditioner with a filter dust removal device according to claim 6, characterized in that: the spiral groove of the spiral groove pipe is provided with bristles. 13. The air-conditioning indoor unit with filter dust removal device according to claim 1, characterized in that: the length of the dust suction pipe is slightly longer than the width of the filter, and the width of the filter is 800 mm, and the spiral groove tube Under the condition that the diameter is 40mm, the number of turns of the spiral groove is 1-4 turns. 14. The air-conditioning indoor unit with a filter dust removal device according to claim 1, characterized in that: fixed frames are arranged on both sides of the air-conditioning indoor unit, and the dust suction pipe is fixed on the fixed frame through brackets at both ends. on the box. 15. The air-conditioning indoor unit with a filter dust removal device according to claim 1, wherein the spiral grooved pipe and the straight grooved pipe are airtightly matched with each other.

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