JP2005140403A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner easy to maintain, in which dust adhered to an air filter can be sucked with a smaller power without removing the air filter from a body. <P>SOLUTION: This air conditioner comprises the air filter 2 for collecting dust contained in the air flowing into a heat exchanger (not shown); a sucking nozzle 3 laterally movable along the upstream-side surface of the air filter 2; and a suction apparatus 6 connected to the sucking nozzle 3. The sucking nozzle 3 comprises a strip film 9 with a sucking pore 11 movable in a direction orthogonal to the moving direction of the sucking nozzle 3. The whole area of the air filter 2 is cleaned by moving the sucking nozzle 3 and the film 9, respectively. According to such a structure, since the opening area of the sucking port 11 can be minimized, the suction apparatus 11 can be miniaturized. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an air conditioner that automatically cleans a filter.

  In a conventional air conditioner, an air filter for preventing dust from entering the inside of the air conditioner main body is provided on the front surface of the heat exchanger, and this air filter can clean the attached dust by hand. It is comprised so that attachment or detachment is possible. Such an air filter not only requires frequent maintenance, but the air filter gradually clogs until the maintenance is performed, resulting in a reduction in the amount of air passing through the heat exchanger. As a result, the air conditioning capacity is reduced, leading to an increase in power consumption.

Therefore, for the purpose of reducing the maintenance work of the air filter, a belt-like air filter stretched around the drive shaft and a rotating brush in contact with the surface of the air filter are provided, and the air filter is rotated by rotating the drive shaft. There is an air conditioner in which dust accumulated on its surface is scraped by rotating a rotating brush while moving (see, for example, Patent Document 1).
JP-A-6-74521

  However, in the above prior art, the brush and the air filter are rubbed against each other, so that there is a problem that dust is entangled with the brush, or the dust removing function is remarkably lowered due to wear or deformation of the brush. In addition, since the brush is provided over the entire width of the air filter, high torque is required to rotate the brush, which increases the driving means of the brush, and the air conditioner main body for securing the storage space There was a problem of increasing the size.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide an air conditioner that is small in size, low in power consumption, excellent in dust removal performance and easy to maintain.

  In order to solve the conventional problems, an air conditioner according to the present invention is movable along an air filter that collects dust contained in air flowing into a heat exchanger, and an upstream surface of the air filter. A suction nozzle and a suction device connected to the suction nozzle, wherein the suction nozzle is provided with a belt-like film that is movable in a direction perpendicular to the moving direction of the suction nozzle and has a suction hole; By simply moving the suction nozzle and film, dust attached to the entire area of the air filter can be sucked and the opening area of the suction hole can be reduced, so that a strong suction force is maintained even if the suction device output is small. However, the amount of suction air can be reduced, and the suction device can be downsized accordingly.

  The air conditioner according to the present invention can sufficiently suck and clean the entire surface of the air filter with an extremely small output suction device, without removing the air filter from the main body.

The first invention includes a heat exchanger, an air filter that collects dust contained in the air flowing into the heat exchanger, a suction nozzle that is movable along the upstream surface of the air filter,
A suction device connected to the suction nozzle, wherein the suction nozzle is provided with a belt-like film that is movable in a direction orthogonal to the movement direction of the suction nozzle and has a suction hole. By moving the film, dust attached to the entire area of the air filter can be sucked and the opening area of the suction hole can be reduced, so even if the suction device output is small, the suction air volume is maintained while maintaining a strong suction force. Can be reduced, and the suction device can be downsized accordingly.

  In the second invention, in particular, the suction nozzle of the first invention includes a nozzle having an opening that opens to face the upstream surface of the air filter, covers the opening, and extends along the opening. The film is supported by a plurality of rollers and is moved by a gear, so that the film can be moved smoothly and reliably.

  In the third invention, in particular, when a roller for pressing the film is disposed in the vicinity of the gear of the first or second invention, and the gear teeth are meshed with a hole provided in the film, the meshing is performed. Since the number increases, the film can be moved more smoothly.

  In the fourth aspect of the invention, the guide groove for guiding the film of any one of the first to third aspects of the invention is provided in the nozzle, and the suction hole of the film can be prevented from shifting from the opening provided in the nozzle. Therefore, the film can be moved smoothly, and good suction cleaning can be performed.

  In the fifth invention, in particular, at least one of the plurality of rollers supporting the film of any one of the second to fourth inventions is substituted with a pin, so that the space for installing the roller is reduced. Since the area of the ventilation path in the nozzle can be expanded, the suction force can be improved.

  In particular, the sixth invention is a substitute for a smooth convex portion formed on the surface of the nozzle at least one of the plurality of rollers supporting the film of any one of the second to fourth inventions. The area of the ventilation path of the nozzle can be further increased, the suction force is improved, and the protrusion of the bent corner of the nozzle can be reduced, so that the nozzle can be stored in the air conditioner body.

  In the seventh aspect of the invention, in particular, among the plurality of rollers supporting the film of any one of the second to sixth aspects, an elastic body that urges at least one roller in a direction in which the film is stretched is provided. Further, it is possible to absorb the slack of the film caused by the size of each part constituting the suction nozzle and the variation due to assembly, and the film can be moved in a stable state at all times.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a perspective view showing an air filter mounting portion of an air conditioner according to Embodiment 1 of the present invention.

  In the figure, 2 is an air filter that is arranged upstream of a heat exchanger (not shown) and removes dust contained in the air flowing into the heat exchanger, supported and fixed to the filter frame 1, A suction nozzle 3 that is movable in the left-right direction along the upstream surface of the air filter 2 is provided. The suction nozzle 3 can be smoothly moved to the left and right with a very narrow gap from the surface of the air filter 2 by guide rails 4 installed at both upper and lower ends of the filter frame 1. Dust adhering to the air filter 2 is sucked from the suction nozzle 3.

  Further, 5 is a suction duct formed of a flexible bellows-like hose or the like, one end of which is connected to the suction nozzle 3, and the other end is a suction device 6 incorporating an electric blower (not shown). The exhaust side of the suction device 6 is connected to an exhaust duct 7 routed outside the room. As described above, the dust of the air filter 2 sucked by the suction nozzle 3 is discharged to the outside through the suction duct 5, the suction device 6, and the exhaust duct 7.

  Next, details of the structure of the suction nozzle 3 will be described with reference to FIGS. 2, 3, and 4.

  2 is a perspective view of the suction nozzle 3, FIG. 3 is a longitudinal sectional view of the suction nozzle 3 (AA sectional view of FIG. 2), and FIG. 4 is a transverse sectional view of the suction nozzle 3 (cross section BB of FIG. 2). Figure).

  The suction nozzle 3 includes a nozzle 8 that forms a flow path of the sucked wind, a film 9 that is provided so as to surround the nozzle 8, a gear 14 that supports the film 9 and transmits a driving force, and supports the film 9. And a plurality of rollers 15a, 15b, 15c for smoothly driving. A slit-like nozzle opening 10 having a length corresponding to the vertical length of the air filter 2 is provided on the surface of the nozzle 8 on the air filter 2 side.

  On the other hand, the film 9 is formed in a loop shape and is wound around the outer periphery of the nozzle 8 so as to cover the nozzle opening 10, and the air filter 2 side surface has an opening 16 having substantially the same opening shape as the nozzle opening 10. It is supported by a film guide 17 provided. The film 9 is provided with a slit-like suction hole 11 (see FIG. 4) having a length that is one-eighth of the longitudinal length of the air filter 2, and the position of the suction hole 11 is opposed to the nozzle opening 10. A film 9 is attached so as to come to the center. Drive holes 12 are provided on both sides of the film 9 at equal intervals. When the gear 14 connected to the stepping motor 13 is engaged with the drive hole 12, the film 9 moves in the vertical direction, that is, on the left and right sides of the suction nozzle 3. It can move freely in a direction perpendicular to the moving direction.

  With the configuration described above, the air volume sucked by the suction device 6 is concentrated and concentrated in the suction hole 11, so that it is possible to generate a strong wind speed in the suction hole 11 portion even with a small air volume. That is, it is possible to exert a strong suction force with a small output. Dust on the air filter 2 sucked by this strong suction force enters the nozzle 8 from the suction hole 11 through the nozzle opening 10, and further to the outside through the suction duct 5, the suction device 6 and the exhaust duct 7. Discharged.

  Next, the operation of sucking and cleaning the entire surface of the air filter 2 with the suction nozzle 3 having the above configuration will be described with reference to FIG.

  FIG. 5 is a view showing the position of the suction hole 11 corresponding to the cleaning ranges A to H of the air filter 2 shown in FIG. As shown in FIG. 1, the actual suction nozzle 3 has a structure bent along the air filter 2, but FIG. 5 shows a state in which the suction nozzle 3 is straightened for easy explanation. That is, the expanded state is described. First, when the area A of the air filter 2 in FIG. 1 is suction-cleaned, the film 9 is driven to fix the suction hole 11 at the position A in FIG. By moving the suction nozzle 3 from the right end to the left end of the air filter 2 while sucking in this state, the range A of the air filter 2 in FIG.

Next, in order to shift to suction cleaning in the range B of the air filter 2 in FIG. 1, the film 9 is driven to fix the suction hole 11 at the position B in FIG. Similarly, by moving the suction nozzle 3 from the left end to the right end of the air filter 2 while sucking in this state, the range B of the air filter in FIG. Similarly, the range from C to H of the air filter in FIG. Thus, the entire surface of the air filter 2 can be cleaned by moving the suction nozzle 3 back and forth along the air filter 2 while driving the film 9 to change the position of the suction hole 11. .

(Embodiment 2)
FIG. 6 is a longitudinal sectional view of the suction nozzle 3 of the air conditioner according to Embodiment 2 of the present invention. In addition, about the same part as the said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the present embodiment, the roller 15d is provided in the vicinity of the gear 14 that supports and drives the film 9 in the direction in which the film 9 is pushed, that is, the number of meshes between the drive holes 12 provided in the film 9 and the gear 14 is increased. It is arranged.

  According to this embodiment, the film 9 can be driven more smoothly by increasing the number of meshes between the drive holes 12 provided in the film 9 and the gears 14.

  In the present embodiment, the rollers 15d are disposed at two positions on the upper and lower sides of the gear 14, but may be provided on only one of them.

(Embodiment 3)
FIG. 7A is a cross-sectional view of suction nozzle 3 of the air conditioner according to Embodiment 3 of the present invention. In addition, about the same part as the said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In this embodiment, the guide groove 18 for guiding the film 9 is provided in the nozzle 8, and when the film 9 is driven, the suction hole 11 provided in the film 9 is provided with the nozzle opening 10 provided in the nozzle 8 and Since it can operate | move smoothly, without shifting | deviating with the opening part 16 of the film guide 17, favorable suction cleaning can be performed, without reducing a suction force.

  Further, as shown in FIG. 7B, the same effect can be obtained even if the guide groove 18 of the film 9 located on the air filter 2 side is provided in the film guide 17.

(Embodiment 4)
FIG. 8 is a longitudinal sectional view of the suction nozzle 3 showing the fourth embodiment of the present invention. In addition, about the same part as the said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the present embodiment, a pin 19 is provided in place of the roller 15b provided in the bent portion of the nozzle 8 among the rollers 15a, 15b, and 15c (see FIG. 3) that support the film 9 in the first embodiment. It is set as the structure which supports.

  And according to this embodiment, since the passage area of the part where the flow path of the wind in the nozzle 8 was narrowed because the roller 15b was provided, the suction force can be improved and good. Suction cleaning can be performed.

  Alternatively, as shown in FIG. 9, when the smooth convex portion 22 is formed on the surface of the bent portion of the nozzle 8 to support the film 9 and to smoothly slide, the portion provided with the roller 15 b The passage area of the nozzle 8 can be further expanded, and the protruding portion of the bent corner portion of the nozzle 8 can be reduced, so that the storage performance of the nozzle 8 in the air conditioner body is improved.

(Embodiment 5)
FIG. 10 is a longitudinal sectional view of the suction nozzle 3 of the air conditioner according to Embodiment 5 of the present invention. In addition, about the same part as the said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the present embodiment, the roller 15c that supports the film 9 described in the first embodiment is supported by a support member 20 that is movably provided in the nozzle 8, and the support member 20 is an elastic body made of a coil spring or the like. 21 is biased outwardly, that is, in the direction in which the film 8 is stretched, and thereby, tension is applied to the film 9 supported by the roller 15c. The film 9 can absorb the deflection of the film 9, and the film 9 can always move stably. Needless to say, the load of the spring 21 is set so that an appropriate tension is applied to the film 9 wound around the nozzle 8.

  In the above embodiment, the tension of the film 9 is adjusted by making the roller 15c movable, but the same effect can be obtained by making the other rollers 15a movable.

  In the above embodiment, the suction nozzle 3 is moved in the left-right direction and the film 9 is moved in the up-down direction with respect to the air conditioner main body. You may make it move the film 9 to the left-right direction, respectively.

  In the above embodiment, the specific moving mechanism of the suction nozzle 3 has not been described. For example, an elastic body that urges the suction nozzle 3 in one direction and a direction that resists the urging force of the elastic body. The drawn wire or string is connected to the suction nozzle 3, and the suction nozzle 3 may be moved left and right by winding or loosening the wire or string with a drive motor. Alternatively, one of the guide rails 4 is formed by a long bolt, a nut that is screwed to the bolt is attached to the suction nozzle 3 side, and the bolt is rotated forward and reverse by a drive motor to move the suction nozzle 3 to the left and right. You may make it move to.

  As described above, the air conditioner according to the present invention can perform dust suction cleaning on the air filter without removing the air filter from the main body with an extremely small output suction device. It can be widely applied to air conditioning equipment, blower equipment, air purifiers and the like.

The perspective view of the attachment part of the air filter of the air conditioner in Embodiment 1 of this invention Perspective view of suction nozzle of the air conditioner Longitudinal sectional view of the suction nozzle (AA sectional view of FIG. 2) Cross-sectional view of the suction nozzle (cross-sectional view taken along BB in FIG. 2) Rear view of the suction nozzle FIG. 2 is a longitudinal sectional view of a suction nozzle of an air conditioner according to Embodiment 2 of the present invention (cross sectional view taken along line AA in FIG. 2). (A) Cross-sectional view of the suction nozzle of the air conditioner according to Embodiment 3 of the present invention (cross-sectional view taken along line BB in FIG. 2), (b) Cross-sectional view showing another example of the suction nozzle (in FIG. 2) BB cross section) FIG. 2 is a longitudinal sectional view of a suction nozzle of an air conditioner according to Embodiment 4 of the present invention (cross sectional view taken along line AA in FIG. 2). Longitudinal sectional view of a suction nozzle showing another example (sectional view taken along line AA in FIG. 2) FIG. 2 is a longitudinal sectional view of the suction nozzle of an air conditioner according to Embodiment 5 of the present invention (cross section taken along the line AA in FIG. 2).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Filter frame 2 Air filter 3 Suction nozzle 4 Guide rail 5 Suction duct 6 Suction apparatus 7 Exhaust duct 8 Nozzle 9 Film 10 Nozzle opening 11 Suction hole 12 Drive hole 13 Stepping motor 14 Gear 15a-15d Roller 16 Opening 17 Film guide 18 Guide groove 19 Pin 20 Support member 21 Elastic body 22 Convex part

Claims (7)

A heat exchanger, an air filter for collecting dust contained in the air flowing into the heat exchanger, a suction nozzle movable along an upstream surface of the air filter, and a suction connected to the suction nozzle An air conditioner provided with a belt-like film that is movable in a direction orthogonal to the moving direction of the suction nozzle and has a suction hole. The suction nozzle includes a nozzle having an opening that opens to face the upstream surface of the air filter, and the film covers the opening and is movably provided along the opening. The air conditioner according to claim 1, wherein the air conditioner is supported and moved by a gear. 3. An air conditioner according to claim 1, wherein a roller for pressing the film is disposed in the vicinity of the gear. The air conditioner according to any one of claims 1 to 3, wherein a guide groove for guiding the film is provided in the nozzle. The air conditioner according to any one of claims 2 to 4, wherein a pin is substituted for at least one of a plurality of rollers supporting the film. The air conditioner according to any one of claims 2 to 4, wherein a smooth convex portion formed on at least one of the plurality of rollers supporting the film is substituted on the surface of the nozzle. The air conditioner according to any one of claims 2 to 6, further comprising an elastic body that urges at least one of the plurality of rollers supporting the film in a direction in which the film is stretched.

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