JP2012047351A - Filter and air conditioner with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter that does not deteriorate productivity even if regions different in mesh density are formed, and can maintain rigidity in an upper direction, and to provide an air conditioner with the filter.SOLUTION: The inside of the filter 5 arranged on the air conditioner 1 is partitioned into a plurality of zones, warps 521 are continuously arranged with yarn diameters a at intervals of pitches A from the upper end toward the lower end of a frame 51, wefts 522 at the upper part 52A of a net body 52 corresponding to an upper stage 51A are formed thin in levels of 1/2 to 1/3 compared with the warps 521, and formed narrow at pitches C in levels of 1/2 to 1/3 compared with the pitches A of the warps 521.

Description

  The present invention relates to a filter and an air conditioner including the filter, and more particularly to a configuration in which the mesh density of the filter is changed depending on the part while maintaining the strength of the filter.

  2. Description of the Related Art Conventionally, for example, a filter provided in an air conditioner for removing dust in the air is vertically moved by a plurality of vertical ribs and horizontal ribs formed of a resin material, such as a filter 30 shown in FIG. And a frame 31 divided into left and right and a net 32 formed by weaving chemical fibers having a predetermined fiber diameter, and stretched in the frame 31, and arranged in the air passage of the air conditioner As a result, there is one that captures dust contained in the intake air by the net 32 and cleans the air that is blown out.

  In the air conditioner, depending on the position of the suction port and the shape of the heat exchanger, the amount of air passing through each part of the heat exchanger may not be uniform, and unevenness in the amount of air flow may affect the heat exchange efficiency. For example, in the air conditioner 1 shown in FIG. 1, the heat exchanger 6 has an inverted V shape including a front upper heat exchanger 6a, a front lower heat exchanger 6b, and a rear upper heat exchanger 6c. When the main suction port is the upper surface suction port 3, the amount of air passing through the rear upper heat exchanger 6c becomes the largest as indicated by the thick arrow, and the heat exchange efficiency in the heat exchanger 6 may be reduced. .

  In order to deal with the above problems, for example, the filter 30 shown in FIG. 4 attached to the back surface of the suction port has a large ventilation resistance in the frame body 31 corresponding to a portion having a large amount of ventilation. On the other hand, the mesh body 30a having a high mesh density is provided, and the mesh body 30b having a low mesh density is disposed so as to reduce the ventilation resistance corresponding to a portion having a low ventilation volume, whereby the ventilation volume passing through various portions of the heat exchanger. Thus, the heat exchange efficiency of the heat exchanger is maintained and improved. (See Patent Document 1).

  The filter 30 described above produces two types of mesh bodies having different mesh densities, which are composed of the mesh body 30a and the mesh body 30b, by making the number of warp yarns and weft yarns different from each other. It is set in the mold and is stretched in the frame 31 in the process of melting the molten resin flowing into the mold by so-called insert molding.

  However, the operation of setting two types of nets in a mold at the time of injection molding has complicated the injection molding operation and has affected the productivity of the filter 30. Further, when the mesh body 30a and the mesh body 30b are arranged in the vertical direction of the filter 30, only the resin that forms the lateral ribs of the frame body 31 exists between the mesh bodies. There was a problem that the strength was lowered.

  Further, in order to prevent the strength reduction in the vertical direction of the filter 30, it is necessary to increase the width of the lateral rib disposed between the mesh body 30 a and the mesh body 30 b and to increase the thickness. There was a problem that the ventilation resistance of the filter 30 was increased.

JP-A-10-141755 (page 3, FIG. 3)

  In view of the above problems, an object of the present invention is to provide a filter that can be easily produced even if portions having different mesh densities are provided and that can improve strength without increasing ventilation resistance.

  In order to solve the above-mentioned problems, the present invention provides a filter comprising a frame and a mesh body in which warp yarns and weft yarns are alternately woven and stretched in the frame body. The web is stretched from the upper end to the lower end of the frame, and the weft is stretched from the left end to the right end of the frame. On the other hand, by changing the fiber diameter and pitch of the weft, the portion having a high mesh density and the mesh density Each of the low portions is provided.

  Further, in the air conditioner comprising a heat exchanger and a blower fan in a main body having a suction port and a blower outlet, and comprising the filter according to claim 1 on the front surface of the heat exchanger, A portion having a high mesh density is arranged corresponding to a portion having a large ventilation amount of the exchanger, and a portion having a low mesh density is arranged corresponding to a portion having a small ventilation amount.

According to the invention of claim 1, the warp yarn is continuously provided from the upper section to the lower section, thereby improving the strength in the vertical direction of the filter, while the weft has a fiber diameter and pitch according to the section. Are provided so as to be different, the mesh density can be changed only by the weft.
Further, at the time of injection molding of the filter, a net body composed of warp and weft can be formed by a single sheet, and the productivity of the filter can be increased.

  According to the invention of claim 2, in the heat exchanger of the air conditioner, the portion having the high mesh density is arranged corresponding to the portion where the air flow rate is large, and the mesh density corresponding to the portion where the air flow amount is small. By arranging the low part, the amount of air passing through the heat exchanger can be made uniform and the heat exchange efficiency can be improved.

It is sectional drawing which shows the air conditioner provided with the filter by this invention. 1 is an external perspective view of a filter according to the present invention. It is explanatory drawing which shows the structure of the filter by this invention. It is explanatory drawing which shows the structure of the conventional filter.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail as examples based on the attached drawings.

  As shown in the sectional view of FIG. 1, the air conditioner 1 having a filter according to the present invention is provided with a front suction port 2 on the front surface, an upper suction port 3 on the upper front surface, and an outlet 4 on the lower front surface. Provided. Although not shown, a side of the outlet 4 is provided with a display unit including a plurality of LEDs and a receiving unit that receives a signal from a remote controller. An up-and-down wind direction plate 9 pivotally supported is provided, and the up-and-down wind direction plate 9 shields the air outlet 4 when operation is stopped.

  The ventilation path connecting the front suction port 2 and the upper suction port 3 and the blower outlet 4 has a filter 5 for removing dust contained in the sucked air, and fins arranged in parallel and orthogonal to the fins. A reverse V-shaped heat exchanger 6 including a front lower heat exchanger 6b, a front upper heat exchanger 6a, and a rear upper heat exchanger 6c, each of which includes heat transfer tubes arranged to A blower fan 7 is provided for sending the air heat-exchanged with the refrigerant in the exchanger 6 from the outlet 4 into the room.

  Also, below the front lower heat exchanger 6b, a front dew tray 10 for receiving condensed water dripping from the front lower heat exchanger 6b and the front upper heat exchanger 6a is provided, and the rear upper heat exchanger 6c. A rear dew tray 11 for receiving condensed water dripping from the rear upper heat exchanger 6c is provided below the rear heat sink 6c. Further, a plurality of left and right wind direction plates 8 for deflecting the blown air to be sent out in the left-right direction are provided in the blow-out passage connecting the blower fan 7 and the blow-out port 4, and the blow-out port 4 rotates as described above. An up-and-down airflow direction plate 9 that is freely supported is provided.

  As shown in FIG. 2A, the filter 5 includes a frame body 51 made of a resin material and formed in a rectangular shape, and a net body 52 stretched in the frame body 51. The frame body 51 is formed in a lattice pattern by two vertical ribs 511 and two horizontal ribs 512, and the frame body 51 is vertically arranged by the two horizontal ribs 512 in an upper step portion 51A and a middle step portion. 51B and a lower step portion 51C are respectively formed.

  As shown in FIG. 2 (B), the mesh body 52 is formed by weaving warp yarns 521, weft yarns 522, and weft yarns 523 alternately, and an upper portion 52A corresponding to the upper step portion 51A of the frame body 51 has an intermediate step. A middle portion 52B is formed corresponding to the portion 51B, and a lower portion 52C is formed corresponding to the lower step portion 51C, and the upper portion 52A is formed so that the mesh density is higher than the middle portion 52B and the lower portion 52C as will be described later. Has been.

  At the time of injection molding of the filter 5, the net 52 is set in the mold, and the molten resin flowing into the closed mold is solidified, so that the net 52 is shown in FIG. As described above, the frame 51 is joined. The frame 51 is molded from a flexible resin material made of, for example, PP (polypropylene), and the net body 52 is also made of fibers made of, for example, PP (polypropylene).

  Next, the warp yarns of the middle part 52B and the lower part 52C of the net 52 arranged corresponding to the upper part 52A and the middle part 51B and the lower part 51C of the net 52 arranged corresponding to the upper part 51A of the frame 51, respectively. The structure of 522 and the weft 522 and the weft 523 will be described in detail.

  As shown in FIG. 3 (B), the upper portion 52A arranged corresponding to the upper step portion 51A has a warp yarn 521 having a fiber diameter of a and a tension A at a pitch A interval. The weft yarn 522 is formed with a fiber diameter b formed to be about 1/2 to 1/3 thinner than the warp yarn 521, and the pitch C of the weft yarn 522 is also 1 compared with the pitch A of the warp yarn 521. It is set narrow to about / 2 to 1/3. Thereby, the upper part 52A is formed so that the mesh density is increased.

  On the other hand, as shown in FIG. 3C, the middle part 52B and the lower part 52C of the mesh body 52 arranged corresponding to the middle step part 51B and the lower step part 51C have the warp yarn 521 at the lower end from the upper end of the frame body 51. Until the fiber diameter is the same as the upper stage portion 51A, the fiber diameter is stretched at intervals of the pitch A, and the weft yarn 523 has the fiber diameter of the diameter a as well as the warp yarn 521. In addition, it is stretched at the same pitch B interval as the pitch A. Thereby, the middle part 52B and the lower part 52C are formed so that the mesh density is lower than that of the upper part 52A.

  When the filter 5 is mounted on the air conditioner 1, in FIG. 1, the upper stage portion 51A is arranged corresponding to the rear upper heat exchanger 6c having the largest ventilation amount, and the middle stage portion 51B and the lower stage portion 51C are provided with the ventilation amount. Are arranged at positions corresponding to the front lower heat exchanger 6b and the front upper heat exchanger 6a, which are fewer than the rear upper heat exchanger 6c.

  Corresponding to the rear upper heat exchanger 6c having the largest ventilation rate, the upper stage portion 51A having a high mesh density is arranged, and the front lower heat exchanger 6b and the front upper heat having a smaller ventilation rate than the rear upper heat exchanger 6c. By arranging the middle stage portion 51B and the lower stage portion 51C having a low mesh density at positions corresponding to the exchanger 6a, the amount of air flowing through the heat exchanger 6 becomes uniform and the heat exchange efficiency of the heat exchanger 6 is improved. It can be made to. Further, the upper stage portion 51A having a high mesh density has a higher ability to capture dust, and can capture dust accurately.

  Further, as described above, the warp yarns 521 are continuously provided from the upper end to the lower end of the frame 51 without any cuts, so that the strength in the vertical direction of the filter 5 can be improved. In addition, this eliminates the need to form the lateral ribs 512 with a wider width and increased thickness, thereby preventing an increase in ventilation resistance of the filter 5.

  As described above, in the air conditioner 1, the amount of air passing through the rear upper heat exchanger 6c is larger than the amount of air passing through the front lower heat exchanger 6b and the front upper heat exchanger 6a. Since the upper stage portion 51A having a high mesh density is located in a portion with a large air flow rate, dust can be captured efficiently and the air flow resistance is increased, so that the amount of air passing therethrough is reduced, and the front upper heat exchanger 6a and the front portion The difference from the amount of air passing through the lower heat exchanger 6b is reduced. As a result, the amount of air passing through the heat exchanger 6 becomes uniform, and the heat exchange efficiency can be improved.

  Further, since the filter 5 only changes the diameter and pitch of the weft yarn 522 in the upper stage portion 51A, the filter 5 does not need to prepare two types of mesh bodies having different mesh densities as in the conventional example, and a single mesh. Since it can be formed by the body 52, the productivity can be increased during the injection molding operation, so-called insert molding.

  Further, since the warp yarns 521 are continuously provided in the vertical direction of the filter 5, the tensile strength in the vertical direction of the filter 5 is improved, and even if an excessive tensile force is applied in the attaching / detaching operation of the filter 5 or the like. It is designed to prevent deformation or damage.

DESCRIPTION OF SYMBOLS 1 Air conditioner 2 Front suction port 3 Upper surface suction port 4 Outlet 5 Filter 51 Frame body 511 Longitudinal rib 512 Lateral rib 51A Upper stage part 51B Middle stage part 51C Lower stage part 52 Net body 521 Warp thread 522 Weft thread 523 Weft thread 52A Upper part 52C Lower part 52C 6 Heat Exchanger 6a Front Upper Heat Exchanger 6b Front Lower Heat Exchanger 6c Rear Upper Heat Exchanger 7 Blower Fan 8 Left and Right Wind Direction Plates 9 Vertical Wind Direction Plate 10 Front Dew Sauce Plate 11 Rear Dew Sauce Plate

Claims (2)

In a filter composed of a frame and a net that is woven by alternately weaving warps and wefts in the frame,
In the mesh body, the warp yarn is stretched from the upper end to the lower end of the frame body, and the weft yarn is stretched from the left end to the right end of the frame body. A filter comprising a portion having a high density and a portion having a low mesh density. An air conditioner comprising a heat exchanger and a blower fan in a main body having a suction port and an air outlet, and the filter according to claim 1 on the front surface of the heat exchanger. The air conditioner is characterized in that the part having a high mesh density is arranged corresponding to a part having a large air flow rate, and the part having a low mesh density is arranged corresponding to a part having a small air flow rate. .

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