JP2007298210A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner having a filter cleaning function for automatically cleaning dirt on a filter and preventing accumulation of dust on fan blades, as in a conventional air conditioner, the dust removed from the filter is directly sucked to the fan, the dust is accumulated on a front edge and the like of a blade portion of the fan when the dust directly flows into the fan, which causes degradation of performance, further dust may not be removed because of clogging between the blades eventually, and the reduction of the number of blades and the designing of the blade shape to prevent the accumulation of dust may cause the degradation of performance of the fan. <P>SOLUTION: This air conditioner is provided with a dust removing means for removing dust on the filter, and a suction exhaust device, and the suction exhaust device is composed of a swirl fan. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an air conditioner, and more particularly, to a filter cleaning function for automatically cleaning dust on a filter.

As a conventional technique of this kind, as shown in FIG. 5, a movable suction nozzle is arranged on the windward side of the filter, and a suction / exhaust device for sucking and exhausting dust from the suction nozzle is arranged. The exhaust device is formed of a sirocco fan with a built-in motor and a casing surrounding the sirocco fan. Dust can be discharged by communicating with an exhaust duct that exhausts the mouth to the outside (see, for example, Patent Document 1).
JP 2004-353966 A

  However, the conventional configuration has the following problems.

  In the above conventional configuration, dust removed from the filter is directly sucked into the fan. For example, in a vacuum cleaner, there are various types of dust removal devices just before the fan, and the user throws away the accumulated dust. However, this device is intended for automatic filter cleaning. If a removal device is provided, the original purpose cannot be achieved.

  If dust flows directly into the fan, dust accumulates on the leading edge of the wing of the fan, etc., which may reduce performance and eventually clog the blades, making it impossible to remove the dust. In addition, reducing the number of blades or designing the blade shape into a shape in which dust does not accumulate easily leads to a decrease in fan performance.

  The present invention solves the above-mentioned conventional problems, and has an air conditioner that has a filter cleaning function for automatically cleaning dust on a filter and prevents accumulation of dust on a fan blade of the suction exhaust device. The purpose is to provide.

  In order to solve the conventional problem, at least inside the indoor unit of an air conditioner provided with a heat exchanger and a suction grill, a filter is provided between the heat exchanger and the suction grill and is attached to the filter. An air conditioner provided with dust removing means for removing dust and a suction / exhaust device for sucking and exhausting the removed dust, wherein the suction / exhaust device includes a motor, a vortex fan, and the vortex fan. It is formed from a letter-shaped casing, the suction inlet of the casing is connected to the dust removing means through a suction duct, and the exhaust outlet of the casing is communicated with an exhaust duct for exhausting the outside to discharge dust. It is comprised as follows.

  The vortex fan does not pass the flow between the fan inner blades like a general fan, only the flow passes around the fan as the fan rotates, and the relative speed between the flow and the fan is small. The filter cleaning device without dust accumulation on the fan can be realized.

The present invention relates to an air conditioner, and relates to a filter cleaning function that automatically cleans dust on a filter, and can provide an air conditioner that prevents accumulation of dust on a fan blade of a suction exhaust device.

  According to a first aspect of the present invention, a filter is provided between the heat exchanger and the suction grill in at least an air conditioner indoor unit provided with a heat exchanger and a suction grill to suck dust adhering to the filter. An air conditioner in which a movable suction nozzle is arranged on the windward side of the filter, and further, the suction exhaust device for sucking and exhausting dust from the suction nozzle is arranged, wherein the suction exhaust device is a motor. And an eddy current fan, a substantially U-shaped casing for housing the eddy current fan, a stripper part for separating the suction port and the discharge port, and an opening for sucking room air upstream from the vortex fan; and By providing a damper mechanism that can open and close the opening, it is possible to realize a filter cleaning device capable of exhaust ventilation that prevents accumulation of dust on the fan blades of the suction exhaust device A.

  The second invention is a dust removing means of the first invention, in particular for sucking dust adhering to the filter, disposing a movable suction nozzle on the windward side of the filter, and further removing dust from the suction nozzle. This suction / exhaust device for suction / exhaust is provided, and with this configuration, dust can be automatically discharged out of the machine.

  According to a third aspect of the invention, in particular, an opening for sucking room air of the first aspect and a damper mechanism capable of opening and closing the opening are provided downstream of the dust removing means and upstream of the vortex fan of the suction exhaust device. At the time of dust suction and discharge, the opening is closed, and at the time of exhaust ventilation, the opening is opened, and the air is passed through the opening, the vortex fan, and the exhaust duct in this order to allow the indoor air to pass outside. This configuration makes it possible to ventilate the dust. By adopting this configuration, dust can be automatically discharged out of the apparatus and can be ventilated.

  The fourth aspect of the invention is particularly the suction exhaust system of the first aspect of the invention, in which a substantially U-shaped casing having an intake port for allowing air to flow in and an exhaust port for allowing air to flow out, and a plurality of sheets for conveying and boosting the inflowed air. Consists of a vortex fan with blades and a stripper part that separates the inlet and outlet. By using this configuration, dust is prevented from getting entangled in the suction and exhaust device, and the dust is surely removed from the machine. Can be discharged.

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

(Embodiment 1)
FIG. 1 is a cross-sectional view of an air conditioner according to an embodiment of the present invention, FIG. 2 is a perspective view thereof, FIG. 3 is a perspective view of a suction / exhaust device, and FIG.

  The indoor unit 1 of the air conditioner has a heat exchanger 2 and a main body blower fan 3, sucks dust adhering to the filter 4 of the indoor unit 1, and moves the suction nozzle 5 that moves to the left and right of the filter 4 to the filter 4. A suction / exhaust device 6 that is arranged on the windward side and sucks and exhausts dust is disposed on the side surface of the indoor unit 1.

  Further, the suction nozzle 5 and the suction exhaust device 6 are connected by a suction duct 7, and there is an exhaust duct 8 connected from the suction exhaust device 6 to the outdoors.

The suction / exhaust device 6 includes a substantially U-shaped casing 11 having a suction port 9 through which air flows in and a discharge port 10 through which air flows out, a vortex fan 12 having a plurality of blades for conveying and pressure-inflowing air, It is formed of a stripper portion 13 that separates the suction port 9 and the discharge port 10.

  Further, the suction port 9 is connected to the suction duct 7, and the discharge port 10 is connected to the exhaust duct 8.

  Next, the operation will be described.

  When the suction / exhaust device 6 is operated, dust on the filter 4 is sucked into the suction nozzle 5 through the suction port 51 opened on the filter 4 side of the suction nozzle 5 on the upstream side of the filter 4, Thereafter, the air is sucked into the suction / exhaust device 6 from the suction port 9 through the suction duct 7.

  Thereafter, the dust is increased in pressure by the rotation of the vortex fan 12 in the suction exhaust device 6, and is discharged to the outdoors from the discharge port 10 through the exhaust duct 8.

  The suction nozzle 5 can move left and right along the filter 4 to clean the entire surface of the filter 4.

  The opening 17 provided with the damper mechanism 16 is closed during the dust suction and discharge, and forms the dust flow path as described above. At the time of ventilation, the opening 17 is opened by the damper mechanism 16, and the ventilation air volume can be increased by flowing a large amount of air from here.

  Next, the operation of the vortex fan 12 will be described.

  That is, in FIG. 4, the air flowing in from the suction port 9 is gradually pressurized by the action of the vortex fan 12 having a plurality of blades 14 while flowing along the flow path 15 in the casing 11, It is discharged from the discharge port 10.

  In such a vortex fan 12, when dust flows in from the suction port 9 as shown in the figure, dust heavier than air flows along the outside of the flow path 15 due to centrifugal force, and some dust temporarily flows. Even if it enters the vortex fan 12 due to the turbulence, the dust is discharged to the outside of the vortex fan 12 in a short time.

  As described above, the air conditioner according to the present invention includes a filter between the heat exchanger and the suction grill, at least inside the indoor unit of the air conditioner provided with the heat exchanger and the suction grill, An air conditioner that sucks dust adhering to the filter, disposes a movable suction nozzle on the windward side of the filter, and further arranges the suction exhaust device for sucking and exhausting dust from the suction nozzle, The suction exhaust device is formed of a motor, a vortex fan, and a substantially U-shaped casing that houses the vortex fan, and connects the suction port of the casing to the dust removing means through a suction duct. The exhaust fan is connected to an exhaust duct that exhausts the air to the outside, so that dust can be discharged. The flow does not pass through the fan, and only the flow passes through the periphery of the fan as the fan rotates, and the relative speed between the flow and the fan is low. Therefore, a filter cleaning device that does not accumulate dust on the fan can be realized. In addition to the indoor unit of an air conditioner, it can be widely applied to a filter cleaning device in a general device having a blower and a filter.

Sectional drawing of the air conditioner in embodiment of this invention The perspective view of the air conditioner in embodiment of this invention The perspective view of the suction exhaust apparatus in embodiment of this invention Flow explanatory diagram of a vortex fan in an embodiment of the present invention Plan view of conventional suction exhaust system

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioner indoor unit 2 Heat exchanger 3 Main body ventilation fan 4 Filter 5 Suction nozzle 51 Suction port 6 Suction exhaust apparatus 7 Suction duct 8 Exhaust duct 9 Suction port 10 Exhaust port 11 Casing 12 Eddy current fan 13 Stripper part 14 Blade 15 Flow Road 16 Damper mechanism 17 Opening 114 Sirocco fan 115 Casing

Claims (4)

At least inside the indoor unit of the air conditioner provided with a heat exchanger and a suction grill, a filter is provided between the heat exchanger and the suction grill, and dust removing means for removing dust adhering to the filter, and removal An air conditioner provided with a suction exhaust device for sucking and exhausting the dust, wherein the suction exhaust device is formed of a motor, a vortex fan, and a substantially U-shaped casing that houses the vortex fan, An air conditioner characterized in that dust can be discharged by connecting the suction port of the casing to the dust removing means through a suction duct, and communicating the exhaust port of the casing with an exhaust duct for exhausting the casing to the outside. As the dust removal means, the suction exhaust device for sucking dust adhering to the filter, arranging a movable suction nozzle on the windward side of the filter, and further sucking and exhausting dust from the suction nozzle is arranged. The air conditioner according to claim 1, characterized in that: An opening for sucking indoor air and a damper mechanism capable of opening and closing the opening are provided downstream of the dust removing means and upstream of the vortex fan of the suction exhaust device. When exhaust ventilation is performed, ventilate by opening the opening and exhausting indoor air to the outside through air in the order of the opening, the vortex fan, and the exhaust duct. The air conditioner according to claim 1, characterized in that: The suction exhaust apparatus includes a substantially U-shaped casing having an intake port through which air flows in and an exhaust port through which air flows out, a vortex fan having a plurality of blades that convey and pressurize the introduced air, and the intake port. The air conditioner according to any one of claims 1 to 3, wherein the air conditioner comprises a stripper part for isolating the discharge port.

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