JP4553654B2 - Filter and air conditioner - Google Patents

Description

  The present invention relates to a filter used for an air conditioner, an air purifier, and the like, and an air conditioner including the air filter.

  Conventionally, a filter is provided in an air passage such as a suction port in a general air conditioner or an air cleaner. Moreover, as this type of filter, a pleated filter in which the filter medium is bent into a pleat shape is known. In this pleated filter, the contact area with air is increased and the suction resistance is reduced. Therefore, there is an advantage that it is possible to extend the life and to be compact (for example, see Patent Document 1).

In addition, as the filter material of the pleated filter, various materials can be used according to the purpose of use of the filter such as long life, air purification, or deodorization. However, any type of filter material is used. However, the basic structure of the filter medium is the same in that it is bent into a pleat shape and includes a plurality of folds.
JP-A-11-351657

  However, there is a problem that it is difficult to clean the filter medium formed in a pleat shape. In detail, it is difficult to remove dust accumulated in the valley of the filter medium formed by oriyama, and dust attached to the surface of the filter medium, especially those with a narrow pleat pitch (interval between fold mountains) However, it is almost impossible to remove dust and the like. Therefore, the pleat type filter has poor reusability and is currently disposable.

  This invention is made | formed in view of the situation mentioned above, It aims at providing the filter which can perform cleaning of a filter medium easily, and can improve reusability, and an air conditioning apparatus provided with the said filter. To do.

In order to achieve the above object, the present invention provides a filter comprising a filter medium and a rectangular frame surrounding the periphery of the filter medium, wherein the filter medium is configured to be foldable from a substantially flat shape to a pleat shape, and the filter medium In a state where the frame body is bent into a pleat shape, the frame body is provided so as to be insertable while being supported by two sides orthogonal to the one side from the side from which the frame body is removed, and is opposed to the side to be removed of the frame body. A plurality of folds from each of both ends of the filter medium on both the front and back surfaces of the filter medium provided with a sealing material inside the side, and a regulating member that regulates the interval between the folds when the filter medium is folded into the pleat shape When the filter medium is inserted into the frame body in a posture in which the direction in which the fold line of the fold mountain extends is an insertion direction from the side from which one side of the frame body is removed, except for In front of each end of the filter media Each of both end portions of the filter medium by a spring be caused by a plurality number of Pic d'Orhy, characterized in that to come into close contact with the inner side of the frame.

According to the present invention, in the above invention, the regulating member may be provided along the edge of the filter media.

  Further, the present invention is characterized in that, in the above-mentioned invention, the regulating member is a protrusion provided at each of substantially symmetrical positions across the fold line for each fold line of the filter medium.

In order to achieve the above object, the present invention provides an air conditioner for performing air conditioning in a room by blowing air from a blower outlet after heat exchange of air sucked from a suction port with a heat exchanger. arranged a filter with a rectangular frame body surrounding the periphery to the suction port, the filter medium to freely configured folded pleated from a substantially planar, said frame body in a folded state said filter medium pleated It is provided so that it can be inserted while being supported by two sides orthogonal to the one side from the side from which one side is removed, and a sealing material is provided on the inner side of the side to be removed and the side opposite to the side, A regulating member that regulates the interval between the folds when the filter medium is folded into the pleat shape is provided for each fold peak except for a plurality of folds from each of both ends of the filter medium on both front and back sides of the filter medium, Remove one side of the frame From when the filter medium is inserted into the frame body in a posture in which the direction in which the fold line of the fold mountain extends is the insertion direction, the spring property generated by the plurality of fold mountains at each end of the filter medium Each of both ends of the filter medium is closely attached to the inside of the frame .

  According to the present invention, the filter medium can be easily cleaned and the reusability can be improved.

  Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, the ceiling-embedded air conditioner is illustrated, but the present invention is not limited to this, and the ceiling-suspended air conditioner is installed by suspending the air conditioner body from the ceiling surface. The present invention can be applied to any air conditioner such as an air conditioner or a floor type air conditioner.

  FIG. 1 is a cross-sectional view of an air conditioner 1 according to the present embodiment, and FIG. 2 is a perspective view showing a schematic configuration of the air conditioner 1. In addition, in FIG. 2, the perspective view which looked at the filter chamber 6 from the upper side is shown with the perspective view which looked at the main body 4 and the drain pan 11 from the downward side.

  In these FIG.1 and FIG.2, the code | symbol 1 is an air conditioning apparatus installed in the ceiling 2 of a house, and is generally called a "4-way cassette". The air conditioner 1 includes a main body 4 suspended from a suspension bolt 3 on the back of a ceiling, a decorative panel 5 exposed from the ceiling, and a chamber (between the decorative panel 5 and the main body 4). “Filter chamber”) 6.

  Reference numeral 7 denotes a fan (“turbo fan”) disposed substantially in the center of the main body 4, and reference numeral 8 denotes a motor for driving the fan 7. The motor 8 is fixed to the main body 4 by a fixture 9. Reference numeral 10 denotes a heat exchanger arranged so as to surround the fan 7, and 11 denotes a drain pan arranged below the heat exchanger 10, and an air passage 12 is formed at the center thereof. A suction plate 13 is attached to the lower surface of the drain pan 11, and an orifice 14 is formed in the suction plate 13.

  The orifice 14 faces the suction port 40 of the fan 7. That is, the suction plate 13 divides the ventilation path 12 into a primary side space 15 and a secondary side space 16, and the fan 7 is located in the secondary side space 16. Below the primary space 15 is a suction port 17. 18 is an air outlet, and 19 is a heat insulating material affixed to the inner wall of the main body. A suction grill 20 is provided at the center of the decorative panel 5, and an air outlet 21 is provided around the suction grill 20.

  A wind direction changing blade 22 is disposed at the air outlet 21. Reference numeral 23 denotes a pre-filter disposed on the back side of the suction grill 20.

  The filter chamber 6 is disposed between the decorative panel 5 and the main body 4. In the chamber 6, a suction space (ventilation path) 25 in which a high-performance filter 24 described in detail later is provided, and the suction space. There are four discharge spaces 26 provided outside 25. The suction space 25 allows the suction port 17 of the main body 4 to communicate with the suction grille 20 of the decorative panel 5, and the discharge space 26 allows the air outlet 18 of the main body 4 to communicate with the air outlet 21 of the decorative panel 5. . In the air conditioner having such a configuration, room air flows as shown by a solid line in FIG.

  Further, as shown in FIG. 2, a gas pipe 201, a liquid pipe 202, and a drain pipe 203 connected to the heat exchanger 10 are collectively arranged at one place on the outer side (outward side) of the main body 4.

  Next, the high-performance filter 24 which is one embodiment of the present invention will be described in detail. As shown in FIG. 3, the high-performance filter 24 includes a filter medium 50 and a frame 51 that surrounds the periphery of the filter medium 50. The filter medium 50 is configured to be foldable from a substantially flat shape to a pleat shape (cross-sectional wave shape) using, for example, a non-woven fabric having appropriate strength and flexibility, and is attached to and detached from the frame body 51 in a pleated shape. It is provided freely.

  The structure of the frame 51 will be described. The frame 51 has four frame sides 51A to 51D. As shown in FIG. 4, the three frame sides 51B to 51D are the upper surfaces of these frame sides 51A to 51D. It is integrally assembled in a U-shape, and its open part is covered by a frame side 51A that is detachably attached to the frame sides 51B and 51D by screws 52, and as a rectangular frame 51 as a whole. Composed. Each of the frame sides 51B to 51D is formed with support pieces 53A and 53B by bending the upper and lower ends inward so as to have a U-shaped cross section. Further, support pieces 53A and 53B are formed on the frame side 51A similarly to the other frame sides 51B to 51D, and the periphery of the filter medium 50 is supported by these support pieces 53A and 53B and stored inside the frame body 51.

  When the frame side 51A is removed, the filter medium 50 can be pulled out while being guided by the support pieces 53A and 53B of the frame sides 51B and 51D. The filter medium 50 is formed of a non-woven fabric (which may be paper or the like) having flexibility enough to stretch the pleat shape, and widens the pleat pitch (the interval between the folds) (indicated by an arrow A in the figure). By applying a force to the filter medium 50, the filter medium 50 can be stretched as shown in FIG. That is, the filter medium 50 can be easily cleaned by pulling the filter medium 50 out of the frame 51 and stretching it. In particular, even when the pleat pitch is narrow and the valley portion is deep, the portion or the entire filter medium 50 can be stretched in a substantially flat shape, so dust and the like accumulated in the valley portion can be easily removed. Is possible. In addition, as cleaning of the filter medium 50, according to the raw material of the said filter medium 50, appropriate cleanings, such as a dust-absorbing cleaning and water washing, can be performed, and the said filter medium 50 can be reused.

  After cleaning the filter medium 50, the pleat shape is accurately restored by reducing the pleat pitch of the filter medium 50, that is, by applying a force in the opposite direction to that when the filter medium 50 is stretched. Specifically, as shown in FIGS. 5 and 6, protrusions 54 </ b> A and 54 </ b> B are provided on both the front and back surfaces of the filter medium 50 as control members that control the interval between the folds, and the filter medium 50 is extended. When contracted again from the state, the original pleat pitch is reproduced, and the reusability of the filter medium 50 is further improved. Hereinafter, the protrusions 54A and 54B will be described.

  FIG. 7 is a top view showing a state in which the filter medium 50 is extended into a sheet shape in a planar shape. In this figure, a broken line indicates a fold line of a mountain fold, and a dashed line indicates a fold line of a valley fold. As shown in this figure, the protrusions 54A (54B) are paired in the vicinity of both side edges 50A, 50B of the filter medium 50 with a pair of symmetric positions across the fold line (that is, for each fold mountain) and on the edges 50A, 50B. It is provided along. At this time, by making the heights of all the protrusions 54A and 54B substantially equal, as shown in FIG. 6, the adjacent protrusions 50A (50B) are in contact with each other, and the interval between the folds is regulated at a constant interval. Therefore, the pleat pitch P is aligned.

  That is, after the filter medium 50 is cleaned, when the filter medium 50 is changed from the stretched state to the contracted state again, the pleat pitch P can be made constant by the protrusions 54A and 54B, and the original pleat shape can be easily restored. It becomes. As a result, it is possible to prevent a situation in which the pleat pitch P is clogged or widened and the filter effect is reduced due to pitch unevenness of the folds of the filter medium 50. Further, since the protrusions 54A and 54B are provided in the vicinity of both side edges 50A and 50B avoiding the central portion of the filter medium 50, the protrusions 54A and 54B do not obstruct the air flow path, and the high-performance filter 24 is provided. The applied air resistance does not increase.

  In the present embodiment, the material of the filter medium 50 is a resin material, and when the filter medium 50 is formed, the protrusions 54A and 54B are integrally formed on both front and back surfaces of the filter medium 50. Further, the pleat pitch P can be easily adjusted by changing the height of the projections 54A and 54B or by appropriately changing the distance from the folding line to the position where the projection 54A (54B) is provided. Further, depending on the strength and size of the material of the filter medium 50, the protrusions 54 </ b> A and 54 </ b> B may be further provided near the center in addition to the both edges 50 </ b> A and 50 </ b> B of the filter medium 50. Moreover, it is good also as a structure which gives the protrusion structure 54A (54B) which mutually contact | abuts, and controls the breadth of the pleat pitch P.

  Here, in the present embodiment, the filter medium 50 is configured to be drawable from the frame body 51, and the filter medium 50 is not fixed to the frame body 51 by adhesion or the like. There may be a gap between 51 and 51. When such a gap is generated, air leaks from the gap, which impedes filter performance. Therefore, in the present embodiment, a configuration is provided in which a gap is prevented from being generated between the frame 51 and the filter medium 50 as follows.

  FIG. 8 is a view showing a cross section of the frame piece 51 </ b> B of the frame body 51 together with the filter medium 50. As shown in this figure, the folds of a predetermined number of folds from the end 60 of the filter medium 50 in contact with the inner side of the frame side 51B are not provided with the projections 54A and 54B, and these folds are in close contact with each other. It is said. In this way, by pressing the filter medium 50 into the frame body 51 in a state where a predetermined number of fold mountains formed on the end portion 60 of the filter medium 50 are brought into close contact with each other, the fold mountain of the end section 60 is spring-framed due to the spring property. Adhering to the inside of 51B, sufficient airtightness can be obtained, and the generation of gaps can be prevented. Also, the end portions 60 of the filter medium 50 on the frame side 51D side are not provided with the protrusions 54A and 54B, so that the end portions 60 are in close contact with the inside of the frame side 51D and the frame side 51D and the filter medium 50 Sufficient airtightness can be obtained during this period.

  On the other hand, in the frame side 51C of the frame 51, as shown in FIG. 9, a sealing material 70 such as foamed polyethylene or foamed rubber having a cushioning property is attached to the inside of the frame side 51C. Sufficient airtightness between the filter medium 50 and the frame side 51C is ensured, and the generation of a gap can be prevented. In addition, although illustration is abbreviate | omitted, a sealing material is affixed also inside 51 A of detachable frame sides similarly to the frame side 51C, and sufficient airtightness is ensured.

  As described above, according to the present embodiment, the filter medium 50 is configured to be foldable from a substantially flat shape to a pleat shape, and is detachably provided on the frame body 51 in a pleated shape, and the filter medium 50 is provided. Since the high-performance filter 24 is configured by providing the protrusions 54A and 54B as regulating members for regulating the interval between the folds when bent into a pleat shape on both the front and back surfaces of the filter medium 50, the filter medium 50 is removed from the frame 51 and the filter medium 50 is removed. The surface of the filter medium 50 can be easily cleaned. Further, even when the filter medium 50 is stretched, the pleat pitch, which is the distance between the folds, is maintained constant by the protrusions 54A and 54B simply by contracting again, and the original pleat shape is restored. The function as 24 can be maintained without deteriorating. That is, according to the high performance filter 24 according to the present embodiment, cleaning is facilitated, and after the cleaning, the original pleat pitch can be accurately and easily returned to the original. Usability can be improved.

  In addition, according to the present embodiment, since the protrusions 54A and 54B as the regulating members are provided along the edges 50A and 50B of the filter medium 50, the protrusions 54A and 54B obstruct the air flow path. In addition, the air resistance applied to the high-performance filter 24 can be prevented from increasing.

  Further, according to the present embodiment, since the protrusions 54A and 54B are not provided on the predetermined number of folds from the end 60 of the filter medium 50, the folds can be in close contact with each other. When the filter medium 50 is pushed into the frame body 51, the end portion 50 of the filter medium 50 is brought into close contact with the inner sides of the frame sides 51B and 51D due to the springiness of the folded portion of the end portion 60, and the filter medium 50 and the frame sides 51B, Sufficient airtightness can be ensured between 51D.

  Further, according to the present embodiment, since the seal material 70 such as foamed polyethylene or foam rubber having cushioning properties is attached to the inside of the frame sides 51A and 51C, the filter medium 50 and the frame sides 51A and 51C Sufficient airtightness can be secured even during the interval.

  In addition, according to the present embodiment, the protrusions 54A and 54B as the restricting members are configured to be provided for each fold line of the filter medium 50 at substantially symmetrical positions across the fold line, The pleat pitch can be easily adjusted by changing the height of the projections 54A and 54B or by appropriately changing the distance from the folding line to the position where the projection 54A (54B) is provided.

  The above-described embodiments merely show one aspect of the present invention, and can be arbitrarily modified within the scope of the present invention. For example, in the above-described embodiment, the case where the present invention is applied to an air conditioner is illustrated. However, the present invention is not limited to this, and an arbitrary device in which a filter is disposed in an air flow path, such as an air cleaner, for example. The present invention can be applied to.

It is sectional drawing which shows the structure of the air conditioning apparatus which concerns on this invention. It is a disassembled perspective view of the said air conditioning apparatus. It is a perspective view which shows the structure of the high performance filter which concerns on this invention. It is a figure for demonstrating attachment / detachment from the frame of the filter medium in the said high performance filter. It is a figure for demonstrating the deformation | transformation to the planar shape of the filter medium made into the pleat shape. It is sectional drawing which shows the structure of a filter medium. It is a top view which shows the structure of a filter medium. It is a figure for demonstrating the adhesiveness of a filter medium and a frame. It is sectional drawing which shows the sealing material affixed inside the frame.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioning apparatus 24 High performance filter 50 Filter medium 51 Frame body 54A, 54B Protrusion

Claims (4)

In a filter comprising a filter medium and a rectangular frame surrounding the periphery of the filter medium,
The filter medium is configured to be foldable from a substantially flat shape to a pleat shape, and is inserted while being supported by two sides orthogonal to the one side from the side from which one side of the frame body is removed in a state where the filter medium is bent into a pleat shape. Freely provided, a sealing material is provided on the inner side of the side to be removed of the frame and the side facing the side,
A regulating member that regulates the interval between folds when the filter medium is folded into the pleat shape is provided for each fold peak except for a plurality of fold peaks from both ends of the filter medium on both front and back sides of the filter medium,
When the filter medium is inserted into the frame body in a posture in which the direction in which the folding line of the fold mountain extends is an insertion direction from the side from which one side of the frame body is removed, each of the plurality of both end portions of the filter medium A filter characterized in that both ends of the filter medium are brought into close contact with the inner side of the frame body by springiness generated by the number of folded mountains . The regulating member A filter according to claim 1, characterized in that provided along the edge of the filter media. 3. The filter according to claim 1, wherein the regulating member is a protrusion provided at each of substantially symmetrical positions across the folding line for each folding line of the filter medium. In the air conditioner that performs air conditioning in the room by blowing out from the air outlet after exchanging heat with the heat exchanger from the air sucked from the suction port,
A filter comprising a filter medium and a rectangular frame surrounding the filter medium is disposed in the suction port,
The filter medium is configured to be foldable from a substantially flat shape to a pleat shape, and is inserted while being supported by two sides orthogonal to the one side from the side from which one side of the frame body is removed in a state where the filter medium is bent into a pleat shape. Freely provided, a sealing material is provided on the inner side of the side to be removed of the frame and the side facing the side,
A regulating member that regulates the interval between folds when the filter medium is folded into the pleat shape is provided for each fold peak except for a plurality of fold peaks from both ends of the filter medium on both front and back sides of the filter medium,
When the filter medium is inserted into the frame body in a posture in which the direction in which the folding line of the fold mountain extends is an insertion direction from the side from which one side of the frame body is removed, each of the plurality of both end portions of the filter medium An air conditioner characterized in that each end of the filter medium is brought into close contact with the inside of the frame body by springiness generated by the number of folded mountains .

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