JP2010274889A - Air conditioner for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent generation of noise at low cost by suppressing vibration of a filter utilizing a filter medium. <P>SOLUTION: On a casing 6, a filter storage part 30 for storing the filter 40 and a detachment hole 31 for exchanging the filter 40 are formed. The filter 40 includes the filter medium 41 for filtering air and a frame 42 for retaining the filter medium 41. The filter medium 41 is projected from a surface opposed to an inner surface of the filter storage part 30 on the frame 42 and is brought into contact with the inner surface of the filter storage part 30. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a vehicle air conditioner provided with a filter for filtering air for air conditioning.

  Conventionally, a vehicle air conditioner including a filter for filtering air for air conditioning is known (see, for example, Patent Document 1). The air conditioner of Patent Literature 1 includes a casing that houses a blower fan, and a filter is accommodated in the casing in a replaceable manner.

JP 2007-145076 A

  However, the air conditioner is housed inside the instrument panel so that it does not stand out in the passenger compartment and is difficult for the operator to reach when replacing the filter, and the filter material is flexible and difficult to grasp. The replacement work is not easy. Therefore, it is easy to grasp the filter by supporting the filter medium with the frame and making it exchangeable together with the frame, and the filter frame is made smaller than the filter housing part of the casing to facilitate the insertion of the filter. It may be possible to do this.

  However, if the filter frame is formed to be small, a gap is formed between the frame and the inner surface of the filter housing portion, so that the frame vibrates at the time of air blowing or vehicle travel and contacts the inner surface of the casing, This may cause abnormal noise.

  On the other hand, it is conceivable that an elastic material for filling the gap between the filter frame and the inner surface of the casing is attached to the frame. In such a case, the number of parts and the assembly are as much as the elastic material is provided. The number of man-hours increases, which causes high costs.

  The present invention has been made in view of such points, and the object of the present invention is to pay attention to the fact that the filter material of the filter has flexibility, and to use this filter material to vibrate the filter. By making it possible to suppress the noise, it is to prevent the generation of abnormal noise at a low cost.

  A first aspect of the present invention is a vehicle air conditioner that includes a casing having an air flow path through which air conditioning air flows, and a filter disposed in the air flow path in the casing. The casing is formed with a filter accommodating portion for accommodating the filter, and a desorption hole for exchanging the filter, and the filter includes a filter medium for filtering air and a frame for holding the filter medium. The filter medium protrudes from a portion of the frame facing the inner surface of the filter housing portion.

  According to this configuration, since the filter includes the frame, it is easy to grasp the filter when replacing the filter. And in the state which accommodated the filter in the filter accommodating part of the casing, the filter medium which protruded from the flame | frame of the filter will contact the inner surface of a filter accommodating part. Therefore, even if the filter frame is formed smaller than the filter housing portion in order to improve the filter insertion workability, vibration of the filter can be suppressed without separately providing an elastic material on the frame. .

  The second invention is characterized in that, in the first invention, the filter material of the filter protrudes in a direction intersecting with the insertion direction into the filter housing portion.

  According to this configuration, only by performing an operation of inserting the filter into the attachment / detachment hole, the filter medium comes into reliable contact with the inner surface of the filter housing portion.

  According to a third invention, in the first or second invention, the filter medium protrudes from a surface extending in the insertion direction of the frame and is formed to be bent between the surface and the inner surface of the filter housing portion. It is what.

  According to this configuration, even if a molding error occurs in the frame or the casing, the filtering error of the filter accommodated in the filter housing portion is allowed to be bent, so that the molding error is allowed. It comes in close contact with.

  According to a fourth invention, in any one of the first to third inventions, the frame is made of a resin material, and the filter material is insert-molded in the frame.

  According to this configuration, the filter medium is firmly fixed without being displaced with respect to the frame.

  According to a fifth invention, in any one of the first to fourth inventions, the filter medium is formed to have a waveform continuous in a predetermined direction, and both sides of the filter medium in a direction in which the waveform continues are projected from the frame. It is characterized by that.

  According to this configuration, since both sides of the filter medium are in contact with the inner surface of the filter housing portion, the frame is less likely to be in direct contact with the inner surface of the filter housing portion.

  According to a sixth invention, in any one of the first to fifth inventions, the filter material of the filter is formed in a substantially rectangular shape in plan view, and the frame is formed in a substantially rectangular shape surrounding the peripheral portion of the filter material. It is characterized by being.

  According to this configuration, the frame has a substantially rectangular shape, so that the rigidity of the frame itself is improved. The filter medium is surrounded by the frame, so that the filter medium can be prevented from being deformed even if the filter medium is flexible and easily deformed.

  According to a seventh invention, in any one of the first to fifth inventions, the filter frame is formed so as to cover only a part of the peripheral edge of the filter medium. .

  According to this configuration, it is possible to reinforce only a part of the filter medium that needs reinforcement with the frame. As a result, the amount of material constituting the frame can be reduced.

  According to an eighth invention, in any one of the first to seventh inventions, the filter medium is formed so as to have a waveform continuous in a predetermined direction, and the filter medium is orthogonal to a direction in which the waves continue in plan view. It protrudes in the direction, and the amount of protrusion of the filter medium is set to ½ pitch or more and 2 pitch or less of the wave.

  According to this configuration, in a state where the filter is housed in the filter housing portion, the portion of the filter medium that protrudes from the frame is bent so as to cover the frame. At this time, if the protruding amount of the filter medium is less than 1/2 pitch of the wave of the filter medium, the frame is not sufficiently covered when the filter medium is bent, and the frame directly touches the inner surface of the filter housing portion. There is a risk of causing abnormal noise. Further, if the amount of protrusion of the filter medium is larger than two pitches of the wave of the filter medium, the amount of protrusion of the filter medium is unnecessarily increased, the workability of insertion into the filter housing portion is deteriorated, and the cost of the filter medium is increased. Invite. That is, by setting the protruding amount of the filter medium within the above range, it is possible to prevent the generation of abnormal noise without causing a cost increase.

  According to a ninth invention, in any one of the first to seventh inventions, the width of the filter medium is set wider than the width of the filter housing portion.

  According to this configuration, the filter medium reliably comes into contact with the inner surface of the filter housing portion in a state where the filter is housed in the filter housing portion. This eliminates the rattling of the filter.

  According to the first aspect of the invention, the filter is provided with a frame so that an operator can easily grasp the filter at the time of replacement, and the filter medium is projected from a portion of the frame facing the inner surface of the filter housing portion. When the frame is formed smaller than the filter housing portion to improve the exchange workability, the filter can be used to suppress the vibration of the filter. Thereby, generation | occurrence | production of abnormal noise can be prevented at low cost, without providing an elastic material in a flame | frame.

  According to the second invention, the filter medium is protruded in a direction intersecting with the insertion direction into the filter housing portion. Therefore, the filter medium can be accommodated in the filter housing only by performing a simple operation of inserting the filter into the desorption hole. Generation of abnormal noise can be prevented by reliably contacting the inner surface of the portion.

  According to the third invention, it is possible to allow a molding error of the frame and the filter housing portion by bending the filter material, so that the filter material can be securely adhered to the inner surface of the filter housing portion. Generation of sound can be prevented beforehand.

  According to the fourth invention, since the filter medium is insert-molded in the resin frame, the position of the filter medium is eliminated, and an effect of preventing abnormal noise can be obtained over a long period of time.

  According to the fifth aspect, since both sides in the direction in which the waveform of the filter medium continues protrude from the frame, it is difficult for the frame to come into direct contact with the inner surface of the filter housing portion, and the generation of abnormal noise can be reliably prevented.

  According to the sixth aspect, since the frame has a rectangular shape surrounding the periphery of the filter medium, the deformation can be suppressed when the filter medium is flexible and easily deformed. Thereby, the malfunction by the deformation | transformation of the filter medium at the time of ventilation can be eliminated.

  According to the seventh invention, only the portion of the filter medium that needs reinforcement can be effectively reinforced with the frame to suppress deformation of the filter medium, and the amount of the material constituting the frame can be reduced and reduced. Cost can be reduced.

  According to the eighth aspect of the invention, the amount of protrusion of the filter medium from the frame is set to 1/2 pitch or more and 2 pitch or less of the wave of the filter medium, so that the generation of abnormal noise can be achieved without incurring a cost increase. Can be prevented.

  According to the ninth aspect, since the width of the filter medium is set wider than the width of the filter housing part, it is possible to reliably make the filter medium come into contact with the inner surface of the filter housing part and prevent the generation of abnormal noise.

It is the figure which looked at the air-conditioner for vehicles concerning an embodiment from the vehicles back side. It is the figure which looked at the ventilation unit of the state which removed the cover member from the vehicle rear side. It is the III-III sectional view taken on the line in FIG. It is a disassembled perspective view of the ventilation unit which abbreviate | omitted the fan and the motor. It is the figure which looked at the filter from the back side. It is the figure which looked at the filter from the right side. FIG. 6 is a view corresponding to FIG. 4 according to Modification 1. FIG. 7 is a view corresponding to FIG. 6 according to Modification 2.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

  FIG. 1 shows a view of a vehicle air conditioner 1 according to Embodiment 1 of the present invention as viewed from the vehicle rear side. The vehicle in which the air conditioner 1 is disposed is a so-called right-hand drive vehicle in which a driver seat and a passenger seat are provided on the right side and the left side of the vehicle, respectively. In the description of this embodiment, for convenience of explanation, the left side in the vehicle width direction is simply referred to as “left”, and the right side in the vehicle width direction is simply referred to as “right”.

  The air conditioner 1 includes a blower unit 3 that blows air for air conditioning, an air conditioner unit 4 that introduces air blown from the blower unit 3 into conditioned air, and a blower unit 3 that blows air to the air conditioner unit 4. And an intermediate duct 5 for sending air for air conditioning.

  The air-conditioning unit 4 is disposed at a substantially central portion in the left-right direction in an instrument panel (not shown) of the passenger compartment, while the air-blowing unit 3 is separated to the left side with respect to the air-conditioning unit 4 and is installed in the passenger seat. It is arranged in the front.

  The blower unit 3 includes a casing 6 that houses a fan 47 (shown in FIG. 3) as an air conditioning device. As shown in FIG. 2, the upper portion of the casing 6 is an air intake portion 7 for taking in air for air conditioning into the blower unit 3, while the lower portion is used for the air conditioning described above. It is set as the ventilation part 8 for ventilating to the unit 4. FIG. Moreover, the part between the air intake part 7 of the casing 6 and the ventilation part 8 is made into the filter accommodating part 30 for accommodating the filter 40 (shown in FIG.3 and FIG.4). As will be described in detail later, the filter 40 is formed in a substantially rectangular thick plate shape, and is disposed so that the air passage surface extends substantially horizontally. In addition, the codes | symbols 19 and 19 of FIG. 1 are the leg parts for fixing the ventilation unit 3 to a vehicle body.

  As shown in FIG. 3, an air flow path S extending from the air intake portion 7 to the blower portion 8 is provided in the casing 6, and the air-conditioning air introduced from the air intake portion 7 passes through the air flow path S. It comes to circulate.

  An outside air inlet 10 for taking in air outside the passenger compartment is formed on the front side of the upper portion of the air intake portion 7, and an inner air inlet 11 for taking in air in the passenger compartment is formed on the rear side. The outside air intake 10 and the inside air intake 11 constitute the upstream end of the air flow path S. The outside air inlet 10 and the inside air inlet 11 have substantially the same rectangular shape. A duct 12 extending outward from the casing 6 is formed at the peripheral edge of the outside air inlet 10. The front end portion of the duct 12 communicates with the outside through an opening (not shown) formed in a dash panel (not shown) of the vehicle. As shown in FIGS. 1 and 2, the casing 6 is provided with a grid-like grill 14 that covers the inside air inlet 11.

  As shown in FIG. 3, a seal plate 6 a is formed inside the casing 6 at the peripheral edge portions of the outside air inlet 10 and the inside air inlet 11. The seal plate portion 6 a protrudes inward of the casing 6 and extends continuously over the entire circumference of the intake ports 10 and 11.

  A rotary damper 20 is disposed inside the casing 6. The rotary damper 20 is configured to rotate in a direction (front-rear direction) in which the outside air intake 10 and the inside air inlet 11 are arranged to selectively open and close the outside air inlet 10 and the inside air inlet 11. Specifically, the rotary damper 20 includes a closing plate portion 21, a triangular left side plate portion 22 and a right side plate portion 23 that are respectively connected to both ends in the left and right direction of the closing plate portion 21, and left and right side plate portions 22 and 23. A rotation shaft 24 extending in the left-right direction so as to be connected is provided. The closing plate 21 is for closing either the outside air inlet 10 or the inside air inlet 11 and has a rectangular shape that is long in the left-right direction. Further, a seal member 25 that contacts the seal plate portion 6 a of the casing 6 is disposed at the peripheral portion of the rotary damper 20.

  The left end portion of the rotation shaft 24 is rotatably supported by the left wall portion of the casing 6. Further, the right end portion of the rotation shaft 24 is rotatably supported by the right wall portion of the casing 6 and protrudes outward from the casing 6 from the right wall portion.

  An inner / outside air switching motor actuator (not shown) and an inside / outside air switching link mechanism (not shown) for rotating the rotary damper 20 are disposed on the right wall portion of the casing 6. When the operating force by the inside / outside air switching motor actuator is transmitted to the rotary damper 20 via the inside / outside air switching link mechanism, the rotary damper 20 rotates around the rotation shaft 24.

  As shown in FIG. 3, when the rotary damper 20 is rotated forward, the closing plate portion 21 is in a position to close the outside air intake 10 and the inside air inlet 11 is opened. Further, the seal member 25 of the rotary damper 20 abuts on the seal plate portion 6 a around the outside air inlet 10 of the casing 6 and the peripheral edge of the outside air inlet 10 is sealed. Thereby, it becomes an inside air introduction mode in which only the air in the passenger compartment is introduced into the air flow path S of the casing 6.

  On the other hand, when the rotary damper 20 is rotated rearward, the closing plate portion 21 is in a position to close the inside air inlet 11 and the outside air inlet 10 is opened. Further, the seal member 25 of the rotary damper 20 abuts on the seal plate portion 6a around the inside air inlet 11 of the casing 6 so that the peripheral portion of the inside air inlet 11 is sealed. As a result, the air flow path S of the casing 6 is in an outside air introduction mode in which only air outside the passenger compartment is introduced.

  The filter housing part 30 is formed so as to surround the filter 40. The filter accommodating portion 30 includes a front wall portion 30a extending in the left-right direction at the front portion of the casing 6, and a left wall portion 30b and a right wall portion 30c extending substantially parallel to each other from the left and right end portions of the front wall portion 30a toward the rear. The rear wall portion 30d extends in the left-right direction so as to connect the rear end portions of the left wall portion 30b and the right wall portion 30c.

  As shown in FIG. 2, the rear wall portion 30d of the filter housing portion 30 is formed with a detaching hole 31 for detaching the filter 40 when the filter 40 is replaced. The desorption hole 31 has a rectangular shape that is long in the left-right direction corresponding to the shape of the filter 40. The horizontal dimension of the attachment / detachment hole 31 is set to be approximately the same as the internal dimension of the filter housing portion 30 in the horizontal direction.

  Further, a lid member 32 that closes the attachment / detachment hole 31 is attached to the rear wall portion 30 d of the filter housing portion 30. The lid member 32 has a rectangular plate shape corresponding to the attachment / detachment hole 31 and constitutes a part of the filter housing portion 30. A claw (not shown) that engages with the peripheral edge of the attachment / detachment hole 31 is formed on the peripheral edge of the lid member 32.

  As shown in FIG. 4, the filter 40 includes a filter medium 41 formed by bending so as to form a continuous waveform in a predetermined direction, and a frame 42 formed so as to surround the peripheral edge of the filter medium 41. Yes. The filter medium 41 and the frame 42 are exchanged together.

  The frame 42 is an integrally molded product of a hard resin material, and has a substantially rectangular shape surrounding the periphery of the filter material 41 over the entire circumference. The frame 42 includes a front plate portion 42a extending in the left-right direction along the front wall portion 30a of the filter housing portion 30, and left and right side walls 30b, 30c of the filter housing portion 30 from the left and right ends of the front plate portion 42a toward the rear. A left plate portion 42b and a right plate portion 42c that extend along the rear wall, and a rear plate portion that extends along the rear wall portion 30d of the filter housing portion 30 and connects the rear ends of the left plate portion 42b and the right plate portion 42c. 42d. By forming the frame 42 in a substantially rectangular frame shape in this way, it becomes possible to ensure the rigidity of the frame 42 itself. Therefore, even if the filter medium 41 is flexible and easily deformed, the filter medium 41 Can be suppressed.

  The outer dimension of the frame 42 in the left-right direction is set to be shorter than the inner dimension of the filter housing portion 30 in the left-right direction. Therefore, as shown in FIG. 5, between the left plate portion 42 b of the frame 42 and the left wall portion 30 b (shown in phantom lines in FIG. 5) of the filter housing portion 30, and between the right plate portion 42 c of the frame 42 and the filter Gaps of dimensions Hl and Hr are formed between the right wall 30c (shown by phantom lines in FIG. 5) of the housing 30. By forming the frame 42 to be smaller than the filter housing portion 30 in this manner, workability is improved when the frame 42 is inserted by the filter housing portion 30.

  The filtering material 41 is made of a member that is more flexible than the resin material that constitutes the frame 42, and is made of, for example, a cloth material. The filter medium 41 has a substantially rectangular shape in plan view (viewed from the air passing direction). The dimension of the filter material 41 in the front-rear direction is set to be substantially the same as the inner dimension of the frame 42 in the front-rear direction.

  On the other hand, the dimension of the filter material 41 in the left-right direction is set longer than the outer dimension of the frame 42 in the left-right direction. The left end portion of the filtering material 41 is a left protruding portion 41 a that protrudes to the left from the outer surface of the left plate portion 42 b of the frame 42 (the portion facing the inner surface of the left wall portion 30 b). The right end portion of the filter medium 41 is a right protruding portion 41b that protrudes to the right from the outer surface of the right plate portion 42c of the frame 42 (the portion facing the inner surface of the right wall portion 30c).

  The protrusion dimension Fl (protrusion amount) of the left protrusion 41 a of the filter medium 41 is longer than the left and right dimension Hl of the gap formed between the left plate part 42 b of the frame 42 and the left wall part 30 b of the filter housing part 30. The protrusion dimension Fr (protrusion amount) of the right protrusion 41b of the filter medium 41 is set to the left and right of the gap formed between the right plate part 42c of the frame 42 and the right wall part 30c of the filter housing part 30. It is set longer than the dimension Hr.

  The protruding dimensions Fl and Fr of the filter medium 41 are set to be approximately the same as the dimension Pt (shown in FIG. 6) for one pitch of the waveform of the filter medium 41. In addition, the protrusion dimensions Fl and Fr of the filter medium 41 are preferably greater than or equal to ½ pitch and less than or equal to 2 pitch.

  Further, the left side of the filter medium 41 is insert-molded from the front end to the rear end of the left plate portion 42b of the frame 42, and the right side is also insert-molded to the right plate portion 42c. As a result, both the left and right sides of the filter medium 41 are fixed to the frame 42, and the filter medium 41 is less likely to be displaced with respect to the frame 42 during use.

  As shown in FIG. 3, a support plate portion 33 that supports the peripheral portion of the filter 40 from the leeward side is formed in the filter housing portion 30. The support plate portion 33 protrudes from the inner surface of the filter housing portion 30 toward the inside of the casing 6 and extends in the circumferential direction.

  In addition, on the inner surface of the front wall portion of the filter housing portion 30, two protrusions 34 that are in contact with the front end surface of the filter 40 are formed at intervals in the vertical direction. These protrusions 34 extend in the left-right direction.

  A partition wall 45 is formed between the filter housing unit 30 and the blower unit 8. A bell mouth shaped hole 46 is formed in the partition wall 45. The hole 46 constitutes a part of the air flow path S. A centrifugal multiblade fan 47 is disposed below the hole 46 in the blower 8 with its rotation axis directed in the vertical direction. A motor 48 that rotates the fan 47 is attached to the lower wall portion of the blower 8.

  An air outflow path 49 in which the air blown out from the fan 47 gathers is formed around the fan 47 in the blower unit 8. Although not shown, the downstream end of the air outflow passage 49 is open on the right side wall of the blower portion 8, and the left end portion of the intermediate duct 5 is connected to the downstream end opening.

  As shown in FIG. 1, the casing 30 of the air conditioning unit 4 is long in the vertical direction as a whole, and is larger than the casing 6 of the blower unit 3. An inlet 25 is formed in the left side wall of the casing 30, and the right end portion of the intermediate duct 8 is connected to the inlet 25.

  An air flow path R extending upward from the introduction port 25 is provided in the casing 30. In the air flow path R, an evaporator (air conditioning device) 34 as a cooling heat exchanger and a heater core (air conditioning device) 43 as a heating heat exchanger are arranged. The conditioned air is generated by mixing the air that has passed through the evaporator 34 and the air that has passed through the heater core 43. The casing 30 is formed with a face air outlet 66, a foot air outlet (not shown), and a defroster air outlet (not shown). These outlets are opened and closed by an outlet direction switching damper (not shown) disposed in the casing 30.

  Next, the case where the filter 40 of the air conditioner 1 configured as described above is replaced will be described. First, as shown in FIG. 2, the lid member 32 is removed from the casing 6. Then, the rear plate portion 42d of the frame 42 of the filter 40 faces the outside from the attachment / detachment hole 31. The operator can grip the rear plate portion 42 d of the frame 42 that is not flexible like the filter material 41, and can easily take out the filter 40 in the filter housing portion 30 from the attachment / detachment hole 31.

  Thereafter, when a new filter 40 is accommodated in the filter accommodating portion 30, the frame 42 of the filter 40 is inserted into the attachment / detachment hole 31 from the front side and inserted into the filter accommodating portion 30. At this time, since the outer dimension in the left-right direction of the frame 42 is set shorter than the inner dimension in the left-right direction of the filter housing portion 30, a slight shift in the left-right direction when the frame 42 is inserted can be allowed. It is good. Of the filter medium 41 of the filter 40, the left protrusion 41a and the right protrusion 41b are bent while contacting the left wall 30b and the right wall 30c of the filter housing 30. The bent portion of the filter medium 41 comes into contact with the outer surface of the frame 42 and the inner surface of the filter housing portion 30. At this time, even if a molding error occurs in the frame 42 or the casing 6, the left protrusion 41 a and the right protrusion 41 b are deformed so as to be in close contact with the inner surface of the filter housing portion 30 due to the flexibility of the filter material 41. Thus, a molding error is allowed, and the filter medium 41 is in contact with the inner surface of the filter housing portion 30.

  Further, as shown in FIG. 5, the protrusion dimensions Fl and Fr of the left protrusion 41a and the right protrusion 41b of the filter medium 41 are set to be substantially the same as the one pitch dimension of the filter medium 41 and are sufficiently long. Therefore, when the projecting portions 41a and 41b are bent, substantially the entire outer surfaces of the left plate portion 42b and the right plate portion 42c of the frame 42 can be covered with the filter material 41. Thereby, the contact area between the frame 42 and the inner surface of the filter housing portion 30 can be sufficiently reduced. If the protrusion dimensions Fl and Fr of the left protrusion 41a and the right protrusion 41b are shorter than the 1/2 pitch of the filter medium 41, the frame 42 can be removed when a molding error or the like of each part is taken into consideration. There is a possibility that the outer surfaces of the left plate portion 42b and the right plate portion 42c are not sufficiently covered with the filter medium 41. On the other hand, by setting the projecting dimensions Fl and Fr to be equal to or larger than the 1/2 pitch of the filter medium 41, it is possible to cover a sufficiently wide range of the outer surfaces of the left plate portion 42b and the right plate portion 42c of the frame 42. it can. Further, by setting the projection dimensions Fl and Fr of the left projection 41a and the right projection 41b to be equal to or less than the two pitches of the filter material 41, the projection dimensions Fl and Fr of the left projection 41a and the right projection 41b are long. It is not too much and is easy to handle. Further, by setting the protrusion dimensions Fl and Fr to be equal to or less than the two pitches of the filter medium 41, the protrusion dimensions Fl and Fr are not unnecessarily long, and the cost of the filter medium 41 can be prevented from rising. Further, the protruding dimensions Fl and Fr may be changed depending on the thickness and flexibility of the filter medium 41.

  Further, when the filter 40 is inserted, the flexible filter material 41 is bent as described above, so that the insertion resistance is not so large and can be inserted with a small force.

  And when using the air conditioner 1, the filter 40 is vibrated by the vibration etc. at the time of ventilation or vehicle travel. At this time, since the flexible filter medium 41 is in contact with the inner surface of the filter housing portion 30, vibration of the filter 40 is suppressed. Thereby, no abnormal noise is generated.

  As described above, according to the air conditioner 1 according to the present embodiment, the filter 42 is provided with the frame 42 so that an operator can easily grasp the filter 40 at the time of replacement. Since the left side protrusion 41a and the right side protrusion 41b are provided by projecting the filter medium 41 from the opposite part, the filter medium 40 is used when the filter 40 is formed to be smaller and the exchange workability is improved. The vibration of the filter 40 can be suppressed. Thereby, generation | occurrence | production of unusual noise can be prevented at low cost.

  Further, since the filter medium 41 protrudes from the left and right sides orthogonal to the insertion direction in the frame 42, the filter medium 41 can be attached to the filter housing portion 30 only by performing a simple operation of inserting the filter 40 from the attachment / detachment hole 31. Generation of noise can be prevented by reliably contacting the inner surfaces of the left wall portion 30b and the right wall portion 30c.

  Further, when the filter medium 41 is bent, a molding error of the frame 42 and the filter housing part 30 can be allowed, and the filter medium 41 comes into close contact with the inner surface of the filter housing part 30. This also can reliably prevent the generation of abnormal noise.

  Further, since the filter medium 41 is insert-molded in the resin frame 42, the position of the filter medium 41 is eliminated, and the effect of preventing abnormal noise can be obtained over a long period of time.

  Further, since both the left and right sides of the filter medium 41 protrude from the frame 42, the contact area between the frame 42 and the inner surface of the filter housing portion 30 can be made sufficiently small, and this also reliably prevents the generation of abnormal noise. .

  In the above embodiment, the frame 42 of the filter 40 is formed in a rectangular frame shape so as to surround the peripheral edge of the filter material 41 over the entire circumference. The frame 42 may be formed so as to cover only a part of the peripheral edge of the filter medium 41. That is, only one of the front plate portion 42a, the left plate portion 42b, the right plate portion 42c, and the rear plate portion 42d of the frame 42 may be omitted, or two or three plate portions may be provided. It may be omitted. Thereby, only the part which needs reinforcement among the filter media 41 can be effectively reinforced with the frame 42, and the deformation of the filter media 41 can be suppressed. In addition, the amount of material used for the frame 42 can be reduced to reduce the cost. When doing in this way, it is preferable to leave the board part extended in the direction where the wave of the filter medium 41 continues.

  Moreover, in the said embodiment, although the filter material 41 of the filter 40 is protruded in the right-and-left both sides of the flame | frame 42, you may make it protrude only in any one. Further, the protrusion dimensions Fl and Fr of the left protrusion 41a and the right protrusion 41 of the filter medium 41 may be different from each other.

  Moreover, in the said embodiment, although the filter material 41 of the filter 40 is protruded in the left-right direction of the flame | frame 42, it is not restricted to this, The filter media 41 is attached to the front and back of the flame | frame 42 like the modification 1 shown in FIG. You may make it protrude in the direction. That is, in Modification 1, the direction in which the waveform of the filter medium 41 continues is the left-right direction. The front end portion of the filtering material 41 protrudes from the front plate portion 42a of the frame 42, and this protruding portion is a front protruding portion 42c. Further, the rear end portion of the filter medium 41 protrudes from the rear plate portion 42d of the frame 42, and this protruding portion is a rear side protruding portion 42d.

  When the filter 40 of Modification 1 is housed in the filter housing portion 30, the front protrusion 41c of the filter material 41 is bent in contact with the front wall portion 30a of the filter housing portion 30, and the rear protrusion 41d of the filter material 41 is It bends in contact with the inner surface of the lid member 32. Thereby, the vibration of the filter 40 is suppressed. In the first modification, one of the front protrusion 41c and the rear protrusion 41d of the filter 41 may be omitted.

  Moreover, in the said embodiment, although the both sides of the waveform width direction are made to protrude from the flame | frame 42 among the filter media 41 of the filter 40, it is not restricted to this but filtration is carried out like the modification 2 shown in FIG. The direction in which the corrugation of the material 41 continues may be defined as the front-rear direction, and both sides of the filter material 41 in the direction in which the corrugation continues may protrude from both front and rear sides of the frame 42. In the second modification, only one of the front side and the rear side of the filter medium 41 may be projected. Although not shown, the direction in which the waveform of the filter medium 41 continues may be the left-right direction, and both sides of the filter medium 41 in the direction in which the waveform continues may protrude from both the left and right sides of the frame 42. In this case, only one of the left side and the right side may be projected.

  It is also possible to project the filtering part 41 of the filter 40 in the front and rear and the left and right directions of the frame 42.

  Moreover, the shape of the filter medium 41 is not limited to the corrugated shape, and may be various shapes.

  The filter medium 41 may be bonded to the frame 42 with an adhesive, or the frame 42 may be divided in the thickness direction of the filter 40 so that the filter medium 41 is sandwiched between members constituting the frame 42. Good. The material of the frame 42 is not limited to resin, and may be, for example, hard paper.

  Moreover, although the said embodiment demonstrated the case where this invention was applied to the semicenter type in which the air conditioner 1 is divided | segmented into the ventilation unit 3 and the air conditioning unit 4, it is not restricted to this, For example, the ventilation fan 47, The present invention can also be applied to a full center type in which the evaporator 34 and the heater core 43 are accommodated in one casing.

  Moreover, although the said embodiment demonstrated the case where the air passage surface of the filter 40 was substantially horizontal, it is not restricted to this, For example, the case where the air passage surface of the filter 40 is substantially vertical, or the case where it inclines. The present invention can also be applied to.

  A plurality of filters 40 may be provided.

  As described above, the present invention can be applied to a vehicle air conditioner provided with a filter.

DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 6 Casing 30 Filter accommodating part 32 Desorption hole 40 Filter 41 Filter material 42 Frame 47 Fan (air conditioning apparatus)
S Air flow path

Claims (9)

A casing having an air flow path through which air-conditioning air flows while accommodating air-conditioning equipment;
In a vehicle air conditioner comprising a filter disposed in an air flow path in the casing,
The casing is formed with a filter accommodating portion for accommodating the filter and a desorption hole for exchanging the filter.
The filter includes a filter medium that filters air, and a frame that holds the filter medium.
The vehicle air conditioner, wherein the filter medium protrudes from a portion of the frame facing the inner surface of the filter housing portion. In the vehicle air conditioner according to claim 1,
The vehicle air conditioner characterized in that the filter material of the filter protrudes in a direction intersecting the insertion direction into the filter housing portion. The vehicle air conditioner according to claim 1 or 2,
The vehicle air conditioner is characterized in that the filter medium projects from a surface extending in the insertion direction of the frame and is bent between the surface and the inner surface of the filter housing portion. In the vehicle air conditioner according to any one of claims 1 to 3,
The frame is made of resin material,
A vehicle air conditioner, wherein the filter medium is insert-molded in the frame. In the vehicle air conditioner according to any one of claims 1 to 4,
The filter medium is formed to have a continuous waveform in a predetermined direction,
A vehicle air conditioner characterized in that both sides in a direction in which the waveform of the filter medium continues protrude from the frame. In the vehicle air conditioner according to any one of claims 1 to 5,
The filter material of the filter is formed in a substantially rectangular shape in plan view,
The vehicle air conditioner is characterized in that the frame is formed in a substantially rectangular shape surrounding the periphery of the filter medium. In the vehicle air conditioner according to any one of claims 1 to 5,
The vehicle air conditioner is characterized in that the filter frame is formed so as to cover only a part of the peripheral edge of the filter medium. In the vehicle air conditioner according to any one of claims 1 to 7,
The filter medium is composed of a member bent into a corrugated shape,
The filter medium protrudes from the frame in a direction orthogonal to the direction in which the waves continue in plan view, and the amount of protrusion of the filter medium from the frame is set to ½ pitch or more and 2 pitch or less of the wave. A vehicle air conditioner. In the vehicle air conditioner according to any one of claims 1 to 7,
The vehicle air conditioner characterized in that the width of the filter medium is set wider than the width of the filter housing portion.

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