JP2008221156A - Air conditioner - Google Patents

Abstract

An air conditioner having an inexpensive structure and excellent air filter cleaning performance is provided.
A filter device (1) arranged in a wind passage (15) includes a filter casing (2), a winding shaft (8) provided above and below the filter casing (2), and an air filter stretched between the winding shafts (8). 4, a horizontally long suction nozzle 3 disposed on the front side of the air filter 4, a suction port 3 a provided in the suction nozzle 3 so as to face the air filter 4 and movable in the horizontal direction, and a suction port 3 a And a suction member 3 that communicates with the suction nozzle 3 at a position opposite to the suction nozzle 3a on the back surface side of the air filter 4. From the suction port 3a to the suction and exhaust device 5 Since the distance of the air filter 4 can be made short and simple, pressure loss can be reduced and the suction force can be improved. Also, the flat member 20 on the back surface side of the air filter 4 reduces dust residue on the back surface of the air filter 4. Is, it is possible to improve the cleaning performance of the air filter 4.
[Selection] Figure 2

Description

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

  A conventional general air conditioner is provided with an air filter in front of the heat exchanger to prevent dust from entering the inside of the main body of the air conditioner. It is detachably attached to the main body so that it can be cleaned by hand. Such an air filter not only requires frequent maintenance, but the air filter gradually becomes clogged until the maintenance is performed, and as a result, the amount of air passing through the heat exchanger is reduced. There was a problem that the air-conditioning capacity declined, leading to an increase in power consumption.

Therefore, for the purpose of reducing the maintenance work of the air filter, an L-shaped suction nozzle that can move left and right along the air filter surface, and a suction port disposed on the surface of the suction nozzle facing the air filter, There has been proposed an air conditioner that is provided with a suction / exhaust device that communicates with a suction port so that dust adhering to an air filter is sucked from the suction port and is periodically cleaned (for example, Patent Document 1). reference).
JP 2004-283704 A

  However, in the conventional air conditioner described in Patent Document 1, the structure is complicated due to the configuration in which the L-shaped suction nozzle is driven left and right on the front surface of the air filter, leading to an increase in cost. Since the distance from the suction exhaust device to the suction exhaust device is long and bent, there is a problem that the pressure loss is large and the suction force is reduced. In addition, there is a problem that dust attached to the front side of the air filter goes around to the back side of the air filter and partially remains.

  The present invention solves the above-described conventional problems, and an object thereof is to provide an air conditioner that is excellent in air filter cleaning performance with an inexpensive configuration.

  In order to solve the above-described conventional problems, the air conditioner of the present invention includes a filter device in a wind passage, and the filter device includes a filter cloth, and a winding shaft provided above and below the filter cloth. , An air filter stretched between the winding shafts, a horizontally long suction nozzle disposed on the front side of the air filter, and provided in the suction nozzle so as to face the air filter and move in the horizontal direction A suction port and a suction exhaust device communicating with the suction port, and a plane member is provided along the suction nozzle at a position facing the suction nozzle on the back side of the air filter. Since the distance from the mouth to the suction / exhaust device can be made short and simple, the pressure loss can be reduced and the suction force can be improved. Moreover, the residue of dust on the back surface of the air filter can be reduced by providing the planar member on the back surface side of the air filter. Therefore, automatic filter cleaning can be realized at low cost without impairing the basic performance of the air conditioner.

  The air conditioner of the present invention can improve the suction force with a simple configuration and can further improve the cleaning performance of dust adhering to the air filter, so that the basic performance of the air conditioner is not impaired. Automatic cleaning can be realized at low cost.

  A first invention includes a filter device in a wind passage, and the filter device includes a filter wax, a winding shaft provided above and below the filter wax, and an air stretched between the winding shafts. A filter, a horizontally long suction nozzle arranged on the front side of the air filter, a suction port provided in the suction nozzle so as to face the air filter and movable in the horizontal direction, and communicated with the suction port A flat member along the suction nozzle at a position opposite to the suction nozzle on the back side of the air filter, and the distance from the suction port to the suction exhaust device is short and simple. Therefore, the pressure loss can be reduced and the suction force can be improved. Moreover, the residue of dust on the back surface of the air filter can be reduced by providing the planar member on the back surface side of the air filter. Therefore, automatic filter cleaning can be realized at low cost without impairing the basic performance of the air conditioner.

  In the second invention, in particular, the planar member of the first invention is integrally molded with the filter cloth, the structure can be simplified, and the assembling property of the air conditioner is improved.

  In the third aspect of the invention, in particular, the flat member of the first or second aspect of the present invention is formed with an irregular surface on the back surface of the air filter. Since it can be pushed back to the front surface side, dust residue on the back surface of the air filter can be reduced, and the cleaning performance can be improved.

  In the fourth aspect of the invention, in particular, a brush material that is in contact with the back surface of the air filter of the first or second invention is disposed above the suction port, and dust that wraps around the back side of the air filter is removed. Therefore, the residue of dust on the back surface of the air filter can be reduced, and the cleaning performance can be improved.

  The fifth aspect of the invention is a brush member that is in contact with the back surface of the air filter of the first or second invention, particularly at a position facing the suction port of the flat member. Since the dust that has entered can be removed on the entire surface of the brush material, it is possible to further reduce the residue of dust on the back surface of the air filter and improve the cleaning performance.

  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 front view of an air conditioner according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line II of FIG. 1, and FIG. 3 is a perspective view of a filter device of the air conditioner. 4 is an external view of a suction nozzle of the filter device.

  1 to 4, a heat exchanger 9 is provided inside an air conditioner main body 11 (hereinafter referred to as “main body 11”) of the air conditioner according to the present embodiment, and a wind flow path 15 serving as an air flow path. Is formed. A fan 10 is provided in the air flow path 15 to generate a flow of air that is sucked from the suction port 16 formed from the front surface to the upper surface of the main body 11 and blown out from the blower port 17. A filter device 1 having an L-shaped cross section is disposed between the suction port 16 formed from the front surface to the upper surface of the main body 11 and the heat exchanger 9, and dust in the air flowing into the main body 11. Is removed by the filter device 1.

As shown in FIG. 3, the filter device 1 includes a filter casing 2, a winding shaft 8 disposed at the upper and lower ends of the filter casing 2, and a tension between the winding shafts 8. An air filter 4 that captures dust, and a suction nozzle 3 disposed on the front (windward) side of the air filter 4
And a suction exhaust device 5 connected to the suction nozzle 3. Reference numeral 7 denotes a take-up shaft drive motor that rotationally drives the take-up shaft 8.

  As shown in FIG. 2, a planar member 20 is provided along the suction nozzle 3 at a position facing the suction nozzle 3 on the back surface (downwind) side of the air filter 4.

  As shown in FIG. 4, the suction nozzle 3 incorporates a film 3c wound in the longitudinal direction of the suction nozzle 3, and the film 3c has a long side in a direction substantially perpendicular to the driving direction of the film 3c. By providing a rectangular suction port 3a and a brush material 3b located in the vicinity of the suction port 3a, and rotating the film 3c by the film drive motor 6, the suction port 3a and the brush material 3b are moved horizontally, that is, left and right. It can be moved in the direction. The suction port 3 a is disposed so as to face the upstream surface of the air filter 4, and communicates with the suction exhaust device 5 through the suction nozzle 3.

  The operation of the filter device 1 configured as described above will be described. After the operation of the main body 11 is stopped, when the suction exhaust device 5 is started and the film drive motor 6 is driven, the film 3c moves, and the suction port 3a and the brush material 3b located at one end of the air filter 4 are As shown in FIG. 4, it moves in the direction of arrow A and sucks dust from the suction port 3a while scraping dust adhering to the front side of the air filter 4. The dust is sucked into the suction exhaust device 5 and exhausted from the suction exhaust device 5. It is discharged to the outside through an exhaust hose (not shown) connected to the side.

  And if the film drive motor 6 is reversely rotated when the suction port 3a moves to the opposite one end, the suction port 3a of the film 3c returns to the initial position. Here, the take-up shaft drive motor 7 is driven, the air filter 4 is wound by the take-up shaft 8, the dust-attached portion is positioned at the suction port 3a, and the suction port 3a and the brush material 3b are again moved by the film drive motor 6. 2 is moved in the direction of arrow A as shown in FIG. Again, when the suction port 3a moves to the opposite one end, the film drive motor 6 is rotated in the reverse direction to return the suction port 3a to the initial position. By repeating the above operation, the entire surface of the air filter 4 can be automatically cleaned.

  As described above, according to the present embodiment, the distance from the suction port 3a to the suction / exhaust device 5 can be configured to be short and simple, so that the pressure loss can be reduced and the suction force can be improved. Further, by providing the planar member 20 on the back surface side of the air filter 4, it is possible to prevent dust from passing through the mesh of the air filter 4 and wrapping around the back surface side, so that the dust residue on the air filter 4 can be reduced.

  In addition, if the planar member 20 provided on the back surface (leeward) side of the air filter 4 is integrally formed with the filter casing 2, the structure can be simplified and the assembling property to the air conditioner can be improved.

(Embodiment 2)
FIG. 5 is a cross-sectional view of a main part of an air conditioner according to the second embodiment of the present invention. In addition, about the same part as the air conditioner in the said 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the present embodiment, as shown in FIG. 5, the surface of the planar member 20 that contacts the back surface of the air filter 4 is formed in an uneven shape. With this configuration, dust that has come around to the back surface side of the air filter 4 can be pushed back to the front surface side by the convex portion during the winding operation of the air filter 4, so that the residual dust on the back surface of the air filter 4 is reduced. And cleaning performance can be improved.

(Embodiment 3)
FIG. 6 is a cross-sectional view of a main part of an air conditioner according to the third embodiment of the present invention. In addition, about the same part as the air conditioner in the said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the present embodiment, as shown in FIG. 6, a brush material 21 in contact with the back surface of the air filter 4 is disposed above the suction port 3a. With this configuration, the dust that has flowed to the back surface side of the air filter 4 can be pushed back to the front surface side by the brush material 21 during the winding operation of the air filter 4, and the dust can be sucked from the suction port 3a. 4 can reduce the residue of dust on the back surface and improve the cleaning performance.

(Embodiment 4)
FIG. 7 is a cross-sectional view of a main part of an air conditioner according to the fourth embodiment of the present invention. In addition, about the same part as the air conditioner in the said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the present embodiment, as shown in FIG. 7, the brush material 21 in contact with the back surface of the air filter 4 is disposed at a position facing the suction port 3 a of the planar member 20. With this configuration, the dust that has flowed to the back surface side of the air filter 4 can be pushed back to the front surface side over the entire surface of the brush material 21 during the winding operation of the air filter 4, and the dust can be sucked from the suction port 3a. The dust residue on the back surface of the air filter 4 can be further reduced, and the cleaning performance can be improved.

  As described above, since the air conditioner according to the present invention has a simple configuration and a small suction air volume, dust attached to the air filter can be reliably and automatically cleaned. It can also be applied to applications such as equipment equipped with an air filter that collects dust.

The front view of the air conditioner in Embodiment 1 of this invention II sectional view of FIG. Perspective view of the filter device of the air conditioner External view of suction nozzle of the filter device Sectional drawing of the principal part of the air conditioner in Embodiment 2 of this invention Sectional drawing of the principal part of the air conditioner in Embodiment 3 of this invention Sectional drawing of the principal part of the air conditioner in Embodiment 4 of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Filter apparatus 2 Filter body 3 Suction nozzle 3a Suction port 4 Air filter 5 Suction exhaust apparatus 8 Winding shaft 9 Heat exchanger 10 Fan 11 Air conditioner main body (main body)
DESCRIPTION OF SYMBOLS 15 Air flow path 16 Suction inlet 17 Outlet 20 Planar member 21 Brush material

Claims (5)

A filter device is provided in the air flow path, and the filter device includes a filter wax, a winding shaft provided above and below the filter wax, an air filter stretched between the winding shafts, and the air filter. A horizontally-long suction nozzle disposed on the front surface side, a suction port provided in the suction nozzle so as to face the air filter and movable in the horizontal direction, and a suction exhaust device communicating with the suction port An air conditioner characterized in that a planar member is provided along the suction nozzle at a position facing the suction nozzle on the back side of the air filter. The air conditioner according to claim 1, wherein the flat member is integrally formed with the filter cloth. The air conditioner according to claim 1 or 2, wherein a surface of the planar member that contacts the back surface of the air filter is formed in an uneven shape. The air conditioner according to claim 1 or 2, wherein a brush material in contact with the back surface of the air filter is disposed above the suction port. The air conditioner according to claim 1 or 2, wherein the brush material in contact with the back surface of the air filter is disposed at a position facing the suction port of the planar member.

Images