JP2006038420A - Filter device for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve slidability and reliability of a film of a suction nozzle and securely automatically suck and clean dust attached to an air filter in an air conditioner. <P>SOLUTION: The suction nozzle 3 comprises an opening part 10 having a nozzle 8 and a belt type film 9 that can be driven along the opening part 10 with covering it. A suction hole 11 is formed on the film 9 as a suction part, and by driving the film 9, the suction place can be varied. Since the material of the film 9 is PET or PEN, dust attached to the air filter 2 can be automatically securely sucked and discharged to outdoor. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

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

  In a conventional air conditioner filter device, an air filter is provided on the front surface of the heat exchanger to prevent dust from entering the inside of the main body of the air conditioner. It is configured to be detachable so that it can be cleaned. The filter device with such a configuration not only requires frequent maintenance, but the air filter gradually clogs until maintenance is performed, resulting in a reduction in the amount of air passing through the heat exchanger. However, the air conditioning capability is reduced, leading to an increase in power consumption.

For this reason, an automatic cleaning device has been devised that periodically cleans dust adhering to the air filter with a brush in order to reduce the maintenance work of the filter (see, for example, Patent Document 1).
JP 2001-99479 A

  However, in the above prior art, since the brush and the air filter are rubbed against each other, there is a problem that dust is entangled with the brush or the brush is worn or deformed to deteriorate its function. Also, after a certain amount of time has passed, the dust collected by scraping with a brush must be treated, and the labor of maintenance has not been greatly reduced. From this point of view, an automatic cleaning device for an air filter is preferably a cleaning method in which dust adhering to the filter is sucked and cleaned by a suction nozzle, and the sucked dust is collected in a dust collector or discharged to the outside.

  This invention solves the said conventional subject, and provides the filter apparatus of the air conditioner which can perform the automatic suction cleaning of the air filter whole surface.

  In order to solve the above-described problems, the present invention includes an air filter that removes dust from air passing through a heat exchanger, a suction nozzle that can be driven along the air filter, and a suction device that is connected to the suction nozzle. In the air conditioner filter device, the suction nozzle includes an opening provided in the nozzle, and a belt-like film that covers the opening and can be driven along the opening, and the film includes a suction part. The film is provided with a suction hole, and the place of suction can be changed by driving the film. Polyethylene terephthalate (PET) or polyethylene naphthalate having excellent slidability and tensile strength as a material of the film (PEN) is used to form an annular film.

  As a result, the slidability and reliability of the film of the suction nozzle can be improved, and dust attached to the air filter can be automatically suctioned and reliably cleaned.

  Since the filter device of the air conditioner of the present invention can improve the slidability and reliability of the film of the suction nozzle, it can provide a high-performance suction nozzle, and dust attached to the air filter Can be suction-cleaned automatically and reliably.

  The first aspect of the present invention is an air conditioner configured by an air filter that removes dust of air passing through a heat exchanger, a suction nozzle that can be driven along the air filter, and a suction device that is connected to the suction nozzle. In the filter device of the machine, the suction nozzle includes a nozzle opening and a belt-like film that covers the opening and can be driven along the opening, and the film is provided with a suction hole serving as a suction part, The place to be sucked can be changed by driving the film. By using polyethylene terephthalate (PET) or polyethylene naphthalate (PEN) as the material of this film, it has excellent slidability and reliability. A suction nozzle can be provided, and stable suction cleaning of dust on the air filter can be performed.

  The second invention, in particular, in the suction nozzle of the filter device of the first invention, can be easily wound around the nozzle portion of the suction nozzle by providing an annular film with the bonded portion bonded or welded, Furthermore, a highly reliable suction nozzle with improved film bonding strength can be provided, and it is possible to perform stable suction cleaning of dust on the air filter.

  The third aspect of the invention is a suction device that is particularly excellent in positioning accuracy of the suction holes provided in the film by providing a stopper at the joint portion of the film provided in the suction nozzle in the filter device of the first or second invention. A nozzle can be provided, and it is possible to perform good suction cleaning of dust on the air filter.

  In the filter device of the third invention, in particular, the fourth invention uses polyethylene terephthalate (PET) or polyethylene naphthalate (PEN) as the material of the stopper provided on the film provided to the suction nozzle, thereby joining the films. Since the strength can be further improved, it is possible to provide a highly reliable suction nozzle.

  In particular, the fifth aspect of the present invention is the filter device of any one of the first to fourth aspects, wherein the total length of the film provided in the suction nozzle is set to be longer than the outer peripheral length of the suction nozzle, thereby reducing sliding resistance. In addition, since it is possible to prevent a sliding failure of the film due to a difference in thermal expansion from the nozzle, it is possible to provide a more reliable suction nozzle.

  The sixth invention is an air conditioner that can automatically and reliably suck and clean dust adhering to the air filter by using the filter device of any one of the first to fifth inventions for an air conditioner. Can be provided.

  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)
1-3 is a figure which showed the structure of the filter apparatus of the air conditioner in Embodiment 1 of this invention. In FIG. 1, an air filter 2 that removes dust from air passing through a heat exchanger is supported and fixed to a filter cloth 1, and a suction nozzle 3 that is movable along the 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 air filter 2 by guide rails 4 installed at the upper and lower ends of the filter cloth 1. Dust adhering to the air filter is sucked from the suction nozzle 3. Further, a suction duct 5 is connected to the suction nozzle 3, and the suction duct 5 is further connected to a suction device 6. The suction duct 5 is formed of a duct that can be bent so as not to interfere with the movement of the suction nozzle 3. Further, an exhaust duct 7 is connected to the suction device 6 and is routed outside the room. The dust of the air filter 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.

  As shown in FIGS. 2 and 3, the suction nozzle 3 is driven by a nozzle 8 that constitutes a flow path of the sucked wind, a film 9 provided so as to surround the nozzle 8, and the film 9. It comprises a gear 14 for transmitting force and rollers 15a, 15b, 15c for supporting the film 9 and driving it smoothly. On the surface of the nozzle 8 on the air filter side, a slit-like nozzle opening 10 having a length corresponding to the vertical length of the air filter 2 is provided. On the other hand, the film 9 is wound around the outer periphery of the nozzle 8 so as to cover the nozzle opening 10. The air filter side surface is supported by a film guide 17 provided with an opening 16 corresponding to the nozzle opening 10. The film 9 is provided with a slit-like suction hole 11, and the film 9 is attached at a position where the suction hole 11 is opposed to the nozzle opening 10. Equally spaced drive holes 12 are provided at both ends of the film 9, and the gear 14 connected to the stepping motor 13 meshes with the drive holes 12 so that the film 9 can be freely driven in any of the vertical directions. It has become.

  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 sucked by this strong suction force enters the nozzle 8 from the suction hole 11 through the nozzle opening 10, and further discharges outside through the suction duct 5, the suction device 6 and the exhaust duct 7. Is done. Then, every time the suction nozzle 3 is driven left and right, the suction hole 11 provided in the film 9 is changed in the vertical direction, so that the entire surface of the air filter can be sucked and cleaned.

  Then, in the film 9 wound so as to surround the nozzle 8 of the suction nozzle 3 with the filter device as described above, polyethylene terephthalate (PET) or polyethylene naphthalate (PEN) excellent in slidability and tensile strength. By using the film, a smooth and highly reliable driving operation of the film 9 can be obtained, so that stable suction cleaning of dust attached to the air filter 2 is possible.

(Embodiment 2)
FIG. 4 is a diagram showing Embodiment 2 of the present invention. As shown in part A in the figure, both ends of the film 9 are overlapped and bonded or welded to form an annular film. As a result, the film 9 can be easily wound around the nozzle 8 and a highly reliable suction nozzle with improved film bonding strength can be provided, which enables stable suction cleaning of dust on the air filter. A filter device that can be provided can be provided.

(Embodiment 3)
FIG. 5 shows the third embodiment of the present invention. The both ends of the film 9 are butted together and a stopper 18 is bonded or welded to the location.

  Here, as described in the first embodiment, when the film 9 is driven by the gear 14 connected to the stepping motor 13 and the suction holes 11 provided in the film 9 are sequentially changed, the suction holes 11 are formed in the nozzle openings 10. Therefore, it is preferable that the suction hole 11 of the film 9 be accurately aligned. Therefore, as shown in FIG. 6, a positioning 19 is provided on the nozzle 8, and a stopper 18 provided on the film 9 is applied to the positioning 19 when the driving of the film 9 is started, and the stepping motor 13 is initialized. Next, when changing the suction hole 11, the number of steps corresponding to the length of the suction hole 11 is given to the stepping motor 13 to drive the film 9, so that the suction hole 11 can be accurately adjusted within the range corresponding to the nozzle opening 10. Therefore, the suction hole 11 can be varied, and a filter device capable of performing good suction cleaning of the entire surface of the air filter can be provided.

(Embodiment 4)
In FIG. 5, the material of the stopper 18 provided by abutting both ends of the film 9 is polyethylene terephthalate (PET) or polyethylene naphthalate (PEN) which is the same as the film material. When the same material as the film 9 is used, the adhesiveness and the weldability are excellent, so that the film 9 having a high bonding strength can be obtained, and the suction nozzle 3 with high reliability can be provided in the filter device.

(Embodiment 5)
FIG. 7 is a cross-sectional view of the suction nozzle 3 showing Embodiment 5 of the present invention. The total length of the film 9 provided on the suction nozzle 3 is set longer than the shortest length when wound around the nozzle 8, the rollers 15a, 15b, 15c and the gear 14, and is bent. When the film 9 is wound around the outer periphery of the nozzle 8 without bending, the sliding resistance of the film 9 is increased, and since PET or PEN is used as the film material, the linear expansion coefficient is smaller than that of ABS as the nozzle material. The film 9 is stretched under high temperature conditions, and sliding failure occurs. In order to avoid these phenomena, it is possible to provide the suction nozzle 3 with higher reliability in the filter device by bending and winding the film 9.

(Embodiment 6)
By using the filter device according to any one of the first to fifth embodiments for an air conditioner, it is possible to provide an air conditioner capable of automatically and reliably sucking and cleaning dust adhering to the air filter 2. .

  As described above, the filter device of the air conditioner according to the present invention can improve the slidability and reliability of the film of the suction nozzle, and thus can provide a high-performance suction nozzle. Since dust adhering to the air filter can be automatically and reliably sucked and cleaned, it can be applied to various air conditioner filter devices.

The perspective view which showed the structure of the filter apparatus of the air conditioner in Embodiment 1 of this invention The perspective view which showed the structure of the suction nozzle in Embodiment 1 of this invention. 2 is a cross-sectional view taken along line AA of FIG. 2 showing the configuration of the suction nozzle according to Embodiment 1 of the present invention. The schematic diagram which showed the structure of the film in Embodiment 2 of this invention. The schematic diagram which showed the structure of the film in Embodiment 3 and 4 of this invention 2 is a cross-sectional view taken along line AA in FIG. 2 showing the configuration of the suction nozzle according to Embodiment 3 of the present invention. 2 is a cross-sectional view taken along line AA in FIG. 2 showing the configuration of the suction nozzle according to the fifth embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Filter work 2 Air filter 3 Suction nozzle 4 Guide rail 5 Suction duct 6 Suction device 7 Exhaust duct 8 Nozzle 9 Film 10 Nozzle opening 11 Suction hole 12 Drive hole 13 Stepping motor 14 Gear 15a Roller 15b Roller 15c Roller 16 Opening 17 Film guide 18 Stopper 19 Positioning

Claims (6)

In an air conditioner filter device comprising an air filter that removes dust from air passing through a heat exchanger, a suction nozzle that can be driven along the air filter, and a suction device connected to the suction nozzle. The suction nozzle includes an opening provided in the nozzle, and a belt-like film that covers the opening and can be driven along the opening. The film is provided with a suction hole that serves as a suction part. A filter device for an air conditioner characterized in that the place of suction can be varied by driving and the material of the film is polyethylene terephthalate (PET) or polyethylene naphthalate (PEN). 2. The filter device for an air conditioner according to claim 1, wherein the suction nozzle includes the annular film having a bonded portion bonded or welded thereto. The filter device for an air conditioner according to claim 1 or 2, wherein a stopper is provided at a film bonding portion in the film provided in the suction nozzle. The air conditioner filter device according to claim 3, wherein a material of the stopper provided at a joint portion of the film is polyethylene terephthalate (PET) or polyethylene naphthalate (PEN). The belt-like film wound around the outer periphery of the suction nozzle while covering the opening of the nozzle, the total length of the film is set longer than the outer peripheral length of the suction nozzle. The filter apparatus of the air conditioner in any one. The air conditioner using the filter apparatus of the air conditioner in any one of the said Claims 1-5.

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