JP4599970B2 - Air conditioner - Google Patents

Description

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

In the 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 configured so as to be detachable. 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.

  The present invention solves the above-described conventional problems, and provides an air conditioner capable of performing automatic suction cleaning on the entire surface of an air filter.

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, the suction nozzle includes a suction hole serving as a suction portion provided in the nozzle, a belt-like film that covers the suction hole and can be driven along the suction hole, and a film guide that holds the film The film is provided with a suction hole as a suction part, and the suction hole provided in the nozzle is formed with an R shape or a C cut shape on the entire inner periphery or the corner in the longitudinal direction of the nozzle. The width dimension of the suction hole provided in the nozzle is set larger than the width dimension of the suction hole provided in the film .

  Thus, a suction nozzle having excellent suction performance can be provided, and dust attached to the air filter can be automatically and reliably sucked and cleaned.

  Since the air conditioner of the present invention can reduce the flow path resistance of the suction hole of the suction nozzle and can improve the suction force, a suction nozzle having excellent suction performance can be provided, and the air filter It becomes possible to automatically suck and clean the dust adhering to the surface.

The first aspect of the present invention is an air conditioner configured by 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. The suction nozzle includes a suction hole serving as a suction portion provided in the nozzle, a belt-like film that covers the suction hole and can be driven along the suction hole, and a film guide that holds the film. by and provided with suction holes is also a suction portion on the film, and facilities the R shape or C-shaped cut in the corner of the entire circumference or longitudinal direction of the nozzle inner side of the suction hole provided in the nozzle, the nozzle width of the suction hole provided to, by setting larger than the width of the suction hole formed in the film, it is possible to reduce the flow channel resistance of the nozzle suction holes It is possible to guide the suction air flow passing through the suction hole streamlined manner inside the nozzle, it is possible to greatly reduce the flow passage resistance can be provided a high suction nozzle of the suction performance.

  According to a second aspect of the invention, in particular, in the suction nozzle of the filter device of the first aspect of the invention, the film guide is provided with a suction hole, and the entire circumference or longitudinal corner of the suction hole on the suction air inlet side has an R shape or With the C-cut shape, the flow path resistance of the suction hole can be reduced, and the circulation sound of the suction air can be eliminated.

  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 is a perspective view showing the configuration of an air conditioner according to Embodiment 1 of the present invention, FIG. 2 is a perspective view showing the configuration of a suction nozzle, and FIGS. 3 and 4 are sectional views of the suction nozzle. 3 is a cross-sectional view of part A in FIG. 2, and FIG. 4 is a cross-sectional view of part B in FIG.

  In FIG. 1, an air filter 2 that removes dust from the air that passes through the 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. The left and right movement of the suction nozzle 3 is driven by a wire and a motor (not shown).

  As shown in FIGS. 2 to 4, the suction nozzle 3 includes a nozzle 8 that forms a flow path of suction air, a film 9 that is provided so as to surround the nozzle 8, and a driving force that supports the film 9. And a roller 15a, 15b, 15c for supporting the film 9 and driving it smoothly. Further, a plurality of slit-like nozzle suction holes 10 are provided in a section corresponding to the longitudinal length of the air filter 2 on the surface of the nozzle 8 on the air filter side. And the corner | angular part inside the nozzle of the nozzle suction hole 10 is giving R shape. On the other hand, the film 9 is wound around the outer periphery of the nozzle 8 so as to cover the nozzle suction hole 10. The air filter side surface is supported by the film guide 17 with a gap 18 with respect to the nozzle 8. The film 9 is provided with a slit-like film suction hole 11, and the film 9 is attached at a position where the film suction hole 11 is opposed to the nozzle opening 10. Equally spaced drive holes are provided at both ends of the film 9, and the gear 9 connected to the stepping motor 13 is engaged with the drive holes so that the film 9 can be freely driven in any of the vertical directions. ing.

  With the configuration as described above, the air volume sucked by the suction device 6 is concentrated in the suction holes 10 and 11, so that a strong wind speed can be generated even with a small air volume. If the suction hole is narrowed, the flow path resistance increases. However, in the present invention, since the corner portion on the nozzle inner side of the nozzle suction hole 10 provided in the nozzle 8 is formed in an R shape, the flow path resistance can be reduced and the suction air can easily flow. 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 film suction hole 11 through the nozzle suction hole 10, and further to the outside through the suction duct 5, the suction device 6 and the exhaust duct 7. Discharged. And every time the suction nozzle 3 is driven left and right, the entire surface of the air filter can be sucked and cleaned by changing the film suction hole 11 provided in the film 9.

(Embodiment 2)
FIG. 5 is a cross-sectional view of the suction nozzle showing Embodiment 2 of the present invention, and more specifically, a cross-sectional view of a portion B in FIG.

  In the following description, descriptions overlapping with those of the first embodiment are omitted.

  As shown in FIG. 5, a suction hole 16 is provided in the film guide 17 at a position facing the nozzle suction hole 10, and a corner of the film guide suction hole 16 on the suction air inlet side is provided with an R shape.

  Thereby, the flow path resistance at the film guide suction hole 16 can be reduced, and the circulation sound of the suction air can be eliminated.

(Embodiment 3)
FIG. 6 is a cross-sectional view of the suction nozzle showing Embodiment 3 of the present invention, and more specifically, a cross-sectional view of part B of FIG.

  In the following description, the description overlapping with the first and second embodiments is omitted.

  In FIG. 6, the dimension L in the width direction of the film suction hole 11 is set larger than the width dimension l of the nozzle suction hole 10 and the film guide suction hole 16 (L> l).

  A gap 18 is provided between the nozzle 8 and the film 9 to obtain smooth driving of the film 9, but the film 9 may be displaced in the left-right direction by the gap 18 during driving. Therefore, by setting the relationship of the width dimensions of the film suction hole 11, the nozzle suction hole 10 and the film guide suction hole 16 to L> 1, the opening area of the film suction hole 11 is reduced even if the film 9 is displaced in the left-right direction. Without increasing the flow path resistance due to the decrease in the opening area.

(Embodiment 4)
FIG. 7 is a cross-sectional view of the suction nozzle showing Embodiment 4 of the present invention, and in detail, is a cross-sectional view of part B of FIG.

  In the following description, descriptions overlapping with Embodiments 1, 2, and 3 are omitted.

  As shown in FIG. 7, the width dimension of the nozzle suction hole 10 is set larger than that of the film suction hole 11.

  As a result, the suction air passing through the suction holes 10, 11, 16 can flow in a streamline manner as shown by the arrows in the figure, so that the flow path resistance can be further reduced and good suction performance can be achieved. Can be obtained.

(Embodiment 5)
FIG. 8 is a configuration diagram of an air conditioner body illustrating Embodiment 5 of the present invention.
By using the filter device 23 according to any one of the first to fourth embodiments for an air conditioner, an air conditioner capable of automatically and reliably sucking and cleaning dust adhering to the air filter 2 can be provided. is there.

  As described above, the air conditioner according to the present invention can reduce the flow path resistance of the suction hole of the suction nozzle and can improve the suction force, so that the suction nozzle has excellent suction performance. Since the dust attached to the air filter can be sucked and cleaned automatically and reliably, it can be applied to various air conditioner applications.

The perspective view which showed the structure 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. Sectional drawing which showed the structure of the suction nozzle in Embodiment 1 of this invention Sectional drawing which showed the structural example of the suction nozzle in Embodiment 1 of this invention. Sectional drawing which showed the structural example of the suction nozzle in Embodiment 2 of this invention. Sectional drawing which showed the structural example of the suction nozzle in Embodiment 3 of this invention. Sectional drawing which showed the structural example of the suction nozzle in Embodiment 4 of this invention. The block diagram of the air conditioner which shows Embodiment 5 of this invention.

DESCRIPTION OF SYMBOLS 1 Filter pump 2 Air filter 3 Suction nozzle 4 Guide rail 5 Suction duct 6 Suction device 7 Exhaust duct 8 Nozzle 9 Film 10 Nozzle suction hole 11 Film suction hole 12 Drive hole 13 Stepping motor 14 Gear 15a Roller 15b Roller 15c Roller 16 Film guide Suction hole 17 Film guide 18 Gap 20 Body 21 Heat exchanger 22 Fan 23 Filter device

Claims (2)

In the air conditioner configured by an air filter that removes dust from air passing through the 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 Is provided with a suction hole serving as a suction portion provided in the nozzle, a belt-like film that covers the suction hole and can be driven along the suction hole, and a film guide that holds the film. In addition, a suction hole serving as a suction portion is provided, and an R shape or a C cut shape is applied to the entire inner periphery or a longitudinal corner of the suction hole provided in the nozzle, and the width of the suction hole provided in the nozzle. An air conditioner characterized in that a dimension is set larger than a width dimension of a suction hole provided in the film . 2. The air conditioner according to claim 1, wherein the film guide is provided with a suction hole, and an R shape or a C cut shape is applied to an entire periphery or a longitudinal corner of the suction hole on the suction air inlet side. Machine.

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