JP4196786B2 - Air conditioner for vehicles - Google Patents

Description

  In the present invention, the cooling heat exchanger is inclined and arranged under the cooling heat exchanger in a space where conditioned air is blown and a space where condensed water generated in the cooling heat exchanger is drained. The present invention relates to a vehicle air conditioner including a partition structure for partitioning.

  Conventionally, in Patent Document 1, as shown in FIG. 7, in a vehicle air conditioner in which a cooling heat exchanger 13 is tilted, conditioned air blows through a lower space 14 of an evaporator 13 that is a cooling heat exchanger. What is provided with the partition member 51 which partitions into the space 12 where condensed space 12 and condensed water are drained is known.

  In this vehicle air conditioner, an evaporator 13, which is a cooling heat exchanger for cooling and dehumidifying conditioned air, is disposed in an air conditioning case 11 so as to be inclined at a predetermined angle θ from a horizontal plane. The evaporator 13 constitutes a core portion 13c that cools the conditioned air, and includes a plurality of tubes through which the refrigerant flows, and a tank portion 13d that distributes the refrigerant to the tubes or joins the refrigerant from the tubes.

  Further, a plurality of thick cylindrical boss portions 50 are arranged on the case bottom surface 11 a located below the evaporator 13, and partition members 51 are attached and fixed to the boss portions 50 by screws 52 at a plurality of locations. . The partition member 51 has a rectangular shape, and when attached to the case 11, the short side direction is the vertical direction, and the long side direction is perpendicular to the inclination direction b of the evaporator 13 (perpendicular to the plane of FIG. 7). )

A seal part 51 a made of an elastically deformable material is formed integrally with the partition member 51 on the upper part of the partition member 51. The seal portion 51a elastically contacts the boundary V between the core portion 13c of the evaporator 13 and the tank portion 13d when the evaporator 13 is assembled to the case 11.
By this partition member 51, the lower space 14 of the evaporator 13 is partitioned into a blower space 12 through which conditioned air flows and a condensed water drainage space 15 that does not flow. Accordingly, the inclined lower end portion 13f where the condensed water collects is located in the drainage space 15 where the conditioned air does not flow. That is, since the conditioned air can be prevented from hitting the inclined lower end portion 13f, the condensed water can be quickly dropped on the case bottom surface 11a by its own weight, and the drainage of the condensed water can be enhanced.
JP 11-115471 A

  However, in the vehicle air conditioner of Patent Document 1, the partition member 51 is screwed to the boss portion 50 of the case bottom surface 11a at a plurality of locations, so that there is a problem that the assembly process increases and the cost increases.

  Accordingly, as shown in FIGS. 8A and 8B, the present inventors integrally form a protruding rib portion 16 protruding upward from the case bottom surface 11a with the case bottom surface 11a. Comparative Example 1 in which a packing member 53 formed of foamed rubber, which is a soft material, was fitted was examined.

  The packing member 53 includes a seal portion 53a that elastically contacts the surface of the evaporator on the air flow upstream side and an attachment portion 53b that is fitted into the rib portion 16 in a state where the evaporator is attached to the case 11. ing.

  According to Comparative Example 1, in order to fit the mounting portion 53b of the packing member 53 into the rib portion 16 formed integrally with the case bottom surface 11a, assembling that the partition member is screwed to the case at a plurality of positions as in Patent Document 1. The process can be eliminated.

  However, the packing member 53 of Comparative Example 1 is made of a soft material. Further, since the packing member 53 functions to partition the lower space of the evaporator, it has a length longer than that of the evaporator in the direction perpendicular to the paper surface of FIG. Therefore, the shape is not stable at the time of fitting into the rib portion 16, and assembly is difficult.

  An object of this invention is to provide the partition structure which improved the assembly | attachment property in view of the said point.

In order to achieve the above object, in the first aspect of the present invention, a case (11) that forms an air passage through which air flows toward the vehicle interior;
A cooling heat exchanger (13) which is disposed in the case (11) so as to be inclined at a predetermined angle (θ) from the horizontal plane, introduces air from the lower space (14) and cools it, and guides the cooled air upward. )When,
A rib portion (16) formed integrally with the bottom surface (11a) of the case (11) located below the cooling heat exchanger (13) ;
A packing member (17) disposed between the cooling heat exchanger (13) and the rib portion (16) ,
The rib portion (16) has a protruding shape protruding upward from the case bottom surface (11a),
The rib portion (16) has a longitudinal direction in a direction (c) perpendicular to the inclined direction (b) of the cooling heat exchanger (13),
The lower space (14) is a space (15) in which condensed water generated in the blast space (12) through which the conditioned air flows and the cooling heat exchanger (13) is drained by the rib portion (16) and the packing member (17). )
Packing member (17) is formed of an elastically deformable elastic material, the seal portion in contact with the lower surface of the air flow upstream side (13e) of the cooling heat exchanger (13) and (18), the sealing portion (18 ) And a mounting portion (19) that is fitted into the rib portion (16) .
The seal portion (18) includes a plate-like contact portion (18a) in contact with the lower side surface (13e) and upper and lower portions of the plate-like contact portion (18a) located below the plate-like contact portion (18a). It is characterized by a vehicle air conditioner in which a cushion part (18b) having a hollow part (18c) that enables directional displacement is formed .

  According to this, the protruding rib portion (16) is formed integrally with the bottom surface (11a) of the case (11), and the packing member (17) is fitted into the rib portion (16). It is possible to eliminate the assembling process of screwing such a partition member to the case at a plurality of locations.

  Of the packing member (17) fitted between the cooling heat exchanger (13) and the rib portion (16), the mounting portion (19) fitted into the rib portion (16) is inserted from the seal portion (18). Since the material is made of a material having high rigidity, the attachment portion (19) can be easily fitted into the rib portion (16) by reducing deformation of the attachment portion (19). For this reason, the assembling property can be remarkably improved as compared with the case where the attachment portion is a soft material as in Comparative Example 1.

  Furthermore, since the attachment portion (19) to be fitted into the rib portion (16) is formed of a material having higher rigidity than the seal portion (18), it is possible to chuck the attachment portion (19) (to grasp the fixed position of the part). The assembly of the packing member (17) to the rib portion (16) can be automated by an industrial machine, and the productivity can be greatly improved.

By the way, the arrangement position of the cooling heat exchanger (13) in the case (11) is not constant because of the component tolerance of the case (11). Therefore, in order to ensure that the plate-like contact portion (18a) of the seal portion (18) comes into contact with the lower surface (13e) on the upstream side of the air flow of the cooling heat exchanger (13), the seal portion (18) is used. Must be displaced up and down. Furthermore, if the amount of displacement of the seal portion (18) is large, the accuracy of the case (11) that determines the arrangement position of the cooling heat exchanger (13) can be loosened, and the component cost of the case (11) can be reduced. Can be suppressed.
Therefore, in the invention described in claim 1, the plate-shaped contact that contacts the lower surface (13 e) is in contact with the seal portion (18) that contacts the lower surface (13 e) on the upstream side of the air flow of the cooling heat exchanger (13). Cushion portion (18b) having a hollow portion (18c) that allows the plate-like contact portion (18a) to be displaced in the vertical direction, located on the lower side of the plate-like contact portion (18a). ) And form.
Thereby, since the amount of displacement of the plate-like contact portion (18a) of the seal portion (18) in the vertical direction can be increased by the cushion portion (18b) having the hollow portion (18c), the plate-like contact of the seal portion (18). The vertical displacement of the portion (18a) can be made larger than the case of only the elasticity of the material of the seal portion (18).
Therefore, even if the accuracy of the case (11) that determines the position of the cooling heat exchanger (13) is loosened, the plate-like contact portion (18a) of the seal portion (18) is not attached to the cooling heat exchanger (13). ) Can be reliably brought into contact with the lower surface (13e).
In addition to this, when the cooling heat exchanger (13) is assembled, the cushion part (18b) having the hollow part (18c) can be deformed faster than the plate-like contact part (18a) with respect to external force. The plate-like contact portion (18a) of the seal portion (18) can be prevented from falling when the cooling heat exchanger (13) is assembled.
Therefore, it is possible to prevent a sealing failure due to a fall of the plate-like contact portion (18a) of the seal portion (18) and an obstruction of the air flow due to closing the lower side surface (13e) of the cooling heat exchanger (13). .
By above operation and effect are together, while avoiding problems such as poor sealing, the cost of the vehicle air conditioner can be greatly reduced.

  Further, as in the invention described in claim 2, if the material for forming the seal portion (18) and the material for forming the attachment portion (19) are integrally molded in claim 1, the elastic material is used. The packing member (17) including the seal portion (18) and the attachment portion (19) formed of a highly rigid material can be formed by a molding process capable of mass production.

  Further, the invention according to claim 3 is characterized in that in claim 2, the packing member (17) has a constant cross-sectional shape in the longitudinal direction.

  Thereby, a packing member (17) can be formed by extrusion molding. The extrusion molding process has high molding efficiency and does not require an expensive metal mold, so that the component cost of the packing member (17) can be suppressed.

  Further, as in the invention described in claim 4, the seal formed of an elastic material according to claim 1 by fixing the seal portion (18) and the mounting portion (19) formed separately. You may form a packing member (17) provided with an attaching part (19) formed with a part (18) and a highly rigid material.

  Moreover, in invention of Claim 5, in any one of Claim 1 thru | or 4, the latching | locking shape which prevents the attachment part (19) from coming off in an attachment part (19) and a rib part (16). 16a, 19b) featuring a vehicle air conditioner.

  Thereby, since an attaching part (19) can be more reliably fitted in a rib part (16), the assembly | attachment defect of a packing member (17) can be decreased. Further, even if there is an assembly process in which the case (11) is turned upside down after the packing member (17) is fitted into the rib portion (16), the packing member (17) is moved by the locking shape (16a, 19b). It is possible to prevent displacement and dropping, and it is possible to eliminate reassembly time, which is loss time.

  Moreover, like invention of Claim 6, in any one of Claim 1 thru | or 4, the attachment part (19) is equipped with the clip shape (19c) which pinches | interposes a rib part (16) using elasticity. If the rib portion (16) is sandwiched between the clip shapes (19c), the packing member (17) is less likely to be assembled in the same manner as in the fifth aspect, and the packing member (17) after assembly is prevented from being displaced or dropped. can do.

According to a seventh aspect of the present invention, there is provided the vehicle according to any one of the first to sixth aspects, wherein the hollow portion (18c) is formed in a diamond shape in cross section so that the cushion portion (18b) is formed in a pantograph shape in cross section. It features an air conditioning system.

  In addition, the code | symbol in the bracket | parenthesis of each said means shows the correspondence with the specific means as described in embodiment mentioned later.

(First embodiment)
FIG. 1 shows a part of an air conditioning unit 10 that houses a heat exchanger part among indoor unit parts in a vehicle air conditioner according to a first embodiment of the present invention. The arrow indicates the direction in the vehicle mounted state. The indoor unit of the vehicle air conditioner is roughly divided into an air conditioning unit 10 and a blower unit (not shown).

  The blower unit includes an inside / outside air switching box that switches and introduces outside air (outside air in the passenger compartment) or inside air (air inside the cabin), and a centrifugal blower that blows air introduced into the inside / outside air switching box. The blown air of the blower unit flows into the lowermost blowing space 12 in the case 11 of the air conditioning unit 10.

  The case 11 is formed of a resin having elasticity and high mechanical strength, for example, polypropylene. Specifically, the case 11 is divided into a plurality of divided cases for the convenience of die cutting for molding, the reasons for assembling the air conditioner in the case, and the like. It is configured to be fastened.

  In the case 11 of the air conditioning unit 10, an evaporator 13 that is a cooling heat exchanger is disposed substantially horizontally with a small inclination angle θ above the air blowing space 12. More specifically, the evaporator 13 is supported in the case by a crank-shaped support portion 11 b formed in the case 11. In this embodiment, the evaporator 13 is inclined so that the front side in the vehicle front-rear direction is lowered, and the inclination angle θ is, for example, about 18 °.

  Accordingly, the blown air of the blower unit flows into the blower space 12 and then passes from the space 12 through the evaporator 13 from below to above as indicated by the arrow a. As is well known, low-pressure refrigerant decompressed by a decompression device such as an expansion valve of a refrigeration cycle for vehicle air conditioning flows into the evaporator 13, and the low-pressure refrigerant absorbs heat from the blown air and evaporates.

  Further, the case bottom surface 11a located below the evaporator 13 has a protruding shape protruding upward from the case bottom surface 11a, and the longitudinal direction is perpendicular to the inclination direction b of the evaporator 13 (in FIG. 2). The rib portion 16 is formed so as to be in the (c direction).

  A packing member 17 is disposed between the evaporator 13 and the rib portion 16. The packing member 17 will be described later. By the rib portion 16 and the packing member 17, the lower space 14 of the evaporator 13 is partitioned into a blower space 12 through which conditioned air flows and a drainage space 15 through which condensed water is drained.

  In addition, the case bottom surface 11a is provided with an inclination, and this inclination is directed to the drain port 20 arranged on the case wall surface (in this embodiment, the case wall surface on the back side in FIG. 1).

  A heater core (not shown), which is a heat exchanger for heating that heats air using warm water (cooling water) of the vehicle engine as a heat source, is disposed above the evaporator 13 (on the downstream side of the air flow). The air after passing through the heater core further flows through the case 11 and is blown out into the vehicle compartment from a blowout port (not shown) disposed on the upstream side of the airflow of the heater core.

  In this embodiment, as a temperature control means for air conditioning, a hot water control valve (not shown) for controlling the hot water flow rate to the heater core is provided, and the hot water flow rate to the heater core is controlled by this hot water control valve, The air heating amount is adjusted to control the temperature of air blown into the passenger compartment.

  FIG. 2 shows the structure of the evaporator 13, and a thin metal plate having excellent corrosion resistance such as aluminum is laminated in the horizontal direction in the figure to constitute a tube 13a through which a refrigerant flows, and a corrugated fin 13b is interposed between the tubes 13a. This is a laminated type that constitutes the core portion 13c that forms an air cooling portion that cools air. And the tank part 13d which distributes a refrigerant | coolant to the some tube 13a, or a refrigerant | coolant merges from the some tube 13a is arrange | positioned at the both ends side of this core part 13c.

  Next, the shape of the packing member 17 which is a main part of the present invention and the fitting into the rib portion 16 will be described. As shown in FIGS. 3 and 4, the packing member 17 includes a seal portion 18 that contacts the evaporator 13 and an attachment portion 19 that is fitted into the rib portion 16.

  A contact portion 18 a that is in contact with a surface 13 e on the upstream side (the vehicle lower side) of the air flow of the evaporator 13 is provided at the uppermost portion of the seal portion 18. On the vehicle lower side of the contact portion 18a, a cushion portion 18b having a cross-sectional pantograph shape that enables the contact portion 18a to be displaced in the vertical direction is provided. The cushion portion 18b is provided with a hollow portion 18c having a diamond-shaped cross section.

  The mounting portion 19 is fitted with the protruding rib portion 16 to determine the position of the packing member 17 at the time of mounting, and the claw shape 19b that prevents the packing member 17 from coming off after fitting into the rib portion 16. And are provided.

  In the present embodiment, as the material of the seal portion 18, a thermoplastic elastomer that can be molded like a thermoplastic resin at a high temperature and that exhibits rubber elasticity at a normal temperature is used. Further, as the material of the attachment portion 19, polypropylene which is an example of a material having higher rigidity than the seal portion 18 and having a certain degree of elasticity and mechanical strength is used.

  Moreover, the packing member 17 of this embodiment has a fixed cross-sectional shape in the longitudinal direction (vehicle left-right direction). Therefore, in this embodiment, the packing member 17 is formed by a multicolor extrusion molding process using materials having different properties (in this embodiment, the aforementioned thermoplastic elastomer and polypropylene).

  As shown in FIG. 4, the packing member 17 is fitted into the rib portion 16 in the attachment direction d (the vehicle downward direction). The rib portion 16 is provided with a locking projection portion 16 a having a locking shape corresponding to the claw shape 19 b of the mounting portion 19. The locking projection 16a is a projection protruding from the rib 16 with a triangular cross section.

  At the time of attaching the packing member 17, the claw shape 19 b of the packing member 17 is elastically pushed and spread by the locking projection 16 a of the rib portion 16. Further, when the packing member 17 is attached in the fitting direction c, the claw shape 19b gets over the locking projection 16a and returns to the original shape. At this time, since the rib portion 16 and the attachment portion 19 are in a locking shape, the packing member 17 cannot be detached from the rib portion 16.

  FIG. 5 shows a state of the packing member 17 when the evaporator 13 is disposed on the case support portion 11b after the packing member 17 is fitted into the rib portion 16. FIG. When the evaporator 13 is assembled, a force is applied to the seal portion 18 of the packing member 17 in the assembly direction d (vehicle downward) of the evaporator 13.

  At this time, in the seal portion 18, the cushion portion 18b having the hollow portion 18c described above is more easily deformed than the contact portion 18a, so the contact portion 18a is not deformed, and the hollow portion 18c is crushed and cushioned. The part 18b is deformed.

  In the present embodiment, the contact portion 18a comes into contact at a position shifted from the boundary V between the core portion 13c of the evaporator 13 and the tank portion 13d by a minute distance e toward the core portion 13c. Is specifically about 2 to 4 mm. Moreover, the contact position of the contact part 18a in the perspective view of the evaporator 13 of FIG. 2 is a position of the continuous line S1 in the figure.

  Next, the operation of the present embodiment in the above configuration will be described. The conditioned air blown from the blower unit flows into the blower space 12 in the case 11 from the front side to the far side in FIG. In 12, the flow is changed upward in the vehicle along a case wall (not shown) on the back side of the paper surface in FIG. 1.

  Here, since the lower space 14 of the evaporator 13 is partitioned into the blower space 12 and the condensed water drainage space 15 by the rib portion 16 and the packing member 17, the conditioned air flow flows only in the blower space 12 and the condensed water drainage space. 15 does not flow (for example, arrow a ′).

  Then, the conditioned air whose direction has been changed passes through the evaporator 13 from below to above as indicated by an arrow a. At this time, if the temperature of the conditioned air falls below the dew point due to the heat absorption of the evaporator 13, moisture in the conditioned air is generated as condensed water in the core portion 13c and the tube 13a of the evaporator 13.

  This condensed water gathers on the surface 13e on the upstream side (vehicle lower side) of the air flow of the evaporator 13 due to its own weight, and along the surface 13e toward the inclined lower end portion 13f of the evaporator 13, as indicated by an arrow w in FIG. Flowing into. The condensed water flowing toward the inclined lower end portion 13f passes through the portion S1 where the seal portion 18 of the packing member 17 is in contact with the surface 13e. At this time, the condensed water tends to fall into the blowing space 12 due to contact with the seal portion 18, but the conditioned air is opposite to the dropping direction, that is, since it flows upward from below the evaporator 13, the blowing space. 12 does not fall.

  On the other hand, after passing through the portion S1 with which the seal portion 18 of the packing member 17 is in contact, the conditioned air does not hit the condensed water by the rib portion 16 and the packing member 17, so the condensed water falls to the case bottom surface 11a. The portion where the condensed water falls mainly is the boundary between the tank portion 13d and the core portion 13c where the condensed shape is difficult to flow in the direction of the inclined lower end portion 13f of the evaporator 13 because the outer shape is complicated. The movement of the condensed water is indicated by an arrow w1 in FIG. Further, the condensed water that has not dropped at the boundary between the tank portion 13d and the core portion 13c travels along the case wall through the inclined lower end portion 13f of the evaporator 13 and falls to the case bottom surface 11a. The movement of this condensed water is indicated by an arrow w2 in FIG.

  The condensed water that has dropped in the case bottom surface 11a in the drainage space 15 in this manner flows along the inclination of the case bottom surface 11a and is drained from the drain port 20.

  Next, the effects of the first embodiment are listed. (1) Since the mounting portion 19 is formed of a material having higher rigidity than the seal portion 18, the shape of the packing member 17 at the time of assembly is stable, and the rib The packing member 17 which is a long part can be easily fitted into the portion 16.

  According to the evaluation of the present inventors, the assembly time of the packing member 53 of Comparative Example 1 was about 10 seconds / piece, but in this embodiment it is about 3 seconds / piece, which greatly improves the assemblability. It was confirmed that

  In addition, since the chuck of the seal portion 19 can be held by the component holding portion of the industrial assembly machine (the position of the component is fixed), the assembly of the packing member 17 to the rib portion 16 can be automated, and the productivity has been greatly improved. Can be improved.

  (2) Since the packing member 17 has a constant cross-sectional shape in the longitudinal direction, it can be molded by extrusion molding. Extrusion molding has a high molding efficiency particularly when molding a part having a length, and an expensive mold is not required for molding using a die. Therefore, the processing cost can be reduced, and the component cost of the packing member 17 can be suppressed.

  (3) Since the locking shapes 16 a and 19 b are disposed on the rib portion 16 and the attachment portion 19 of the packing member 17, the packing member 17 can be more securely fitted into the rib portion 16.

  In the present embodiment, a locking projection 16a having a triangular cross section is disposed on the rib portion 16, and the mounting portion 19 has a claw shape corresponding to the locking projection 16a. When the packing member 17 is fitted, the claw shape 19b of the packing member 17 is elastically expanded by the locking projection 16a of the rib portion 16, and the claw shape 19b gets over the locking projection 16a to the original shape. Return. At this time, the rib portion 16 and the attachment portion 19 are in a locking shape, and the packing member 17 is not detached from the rib portion 16.

  Thereby, since the attachment part 19 can be reliably fitted in the rib part 16, the assembly | attachment defect of the packing member 17 can be decreased. Further, even if there is an assembly process in which the case 11 is turned upside down after the packing member 17 is attached to the rib portion 16, it is possible to prevent the packing member 17 from being displaced or dropped due to the locking shape, and in a loss time. Some reassembly time can be eliminated.

  (4) Since the rib portion 16 is formed integrally with the case bottom surface 11 a and the packing member 17 is fitted into the rib portion 16, a partition member that is a separate part from the case 11 is screwed to the case 11 at a plurality of locations as in Patent Document 1. The assembly process of stopping can be eliminated, and the assembly cost can be reduced.

  (5) Since the hollow portion 18c is disposed in the cushion portion 18b of the seal portion 18, an elastic displacement greater than the elasticity of the material of the seal portion 18 can be exhibited.

  By the way, as shown in FIG. 9 as Comparative Example 2, the present inventors have used two colors for the seal portion 16b on the upper portion of the rib portion 16 formed integrally with the case bottom surface 11a by using a material different from the material of the case. The formation by molding was also studied.

  However, in the vehicle air conditioner of Comparative Example 2, since the seal portion 16b is integrally formed by two-color molding of an elastic material on a part of the case 11 having a complicated shape (upper portion of the rib portion 16), molding is difficult. In addition to the high cost of the molding die, the amount of deflection (up and down displacement) of the seal portion 16b is small, so the accuracy of the case 11 that determines the position of the evaporator 13 is required, and the cost increases. Resulting in.

  Therefore, in order to cope with the problems of the moldability and the mold cost increase, the packing member 17 is attached to the protruding rib portion 16 formed integrally with the case bottom surface 11a as in the present embodiment. On the other hand, for the problem that the amount of displacement of the contact portion 18a of the seal portion 18 in the vertical direction is small, a cushion portion 18b having a hollow portion 18c is disposed in the seal portion 18 of the packing member 17, and the evaporator 13 is disposed. The amount of displacement in the vertical direction of the contact portion 18a in contact is increased.

  By disposing the hollow portion 18c in the cushion portion 18b, the amount of displacement of the contact portion 18a in the vertical direction has increased. Therefore, even if the accuracy of the case 11 that determines the arrangement position of the cooling heat exchanger 13 is loosened, The seal portion 18 can be reliably brought into contact with the surface 13e on the upstream side (the vehicle lower side) of the heat exchanger 13. Thereby, the component cost of case 11 can be reduced.

  In addition, when the seal portion 18 of the packing member 17 contacts the surface 13e of the evaporator 13 and the contact portion 18a of the seal portion 18 falls down, the air flow to the evaporator 13 is obstructed, The seal between the space 12 and the drainage space 15 becomes insufficient, and the problem that the effect of enhancing the drainage of the effect (7) described later is weakened when the conditioned air enters the drainage space 15 occurs.

  However, in this embodiment, the cushion portion 18b is deformed faster than the contact portion 18a with respect to an external force, so that the contact portion 18a can be prevented from falling and the above-described problems can be prevented. it can.

  (6) The evaporator 13 is disposed at a predetermined angle with respect to the horizontal plane so that the amount of water retained in the evaporator 13 is reduced. Further, since the lower space 14 of the evaporator 13 is partitioned into the blowing space 12 and the drainage space 15 by the rib portion 16 and the packing member 17, the condensed water generated in the evaporator 13 is quickly drained in the drainage space 15. be able to.

  (7) Since the seal portion 18 of the packing member 17 is in contact with the core portion 13c rather than the boundary between the core portion 13c and the tank portion 13d of the evaporator 13, the drainage of condensed water can be improved.

  The condensed water generated in the evaporator 13 flows along the air flow upstream side (vehicle lower side) surface 13e of the evaporator 13, but the flow is hindered in the tank portion 13d having a complicated outer shape. It falls to the case bottom surface 11a at the boundary V between the portion 13c and the tank portion 13d. Further, the condensed water that has not fallen at the boundary V passes through the case wall through the inclined lower end portion 13f of the evaporator 13 and falls to the case bottom surface 11a. In the present embodiment, since the seal portion 18 is arranged closer to the core portion 13c than the boundary between the core portion 13c and the tank portion 13d, the boundary between the core portion 13c and the tank portion 13d and the inclined lower end portion 13f are made of conditioned air. It will be located in the drainage space 15 that does not hit, and the condensed water can be quickly dropped without being affected by the conditioned air.

  By the way, when the temperature of the conditioned air falls below the dew point due to the heat absorption of the evaporator 13, moisture in the conditioned air is generated in the core portion 13c of the evaporator 13 as condensed water. If this condensed water is not quickly drained from the core portion 13c, problems such as jumping of the condensed water to the downstream side of the air flow of the evaporator 13 due to the air-conditioned air flow, increase of the ventilation resistance of the evaporator 13, and deterioration of the heat exchange performance occur. .

  In this embodiment, as described in the effects (6) and (7), the drainage of the condensed water is improved and the above-mentioned problems are solved.

(Second Embodiment)
In the first embodiment, an example in which the locking shapes 16a and 19b are arranged on the mounting portion 19 and the rib portion 16 of the packing member 17 is shown. However, in the second embodiment, the mounting portion 19 is elastic as shown in FIG. Is provided with a clip shape 19c that sandwiches the rib portion 16.

  More specifically, the mounting portion 19 has a positioning portion 19a that fits the rib-shaped rib portion 16 and determines the position of the packing member 17 at the time of mounting, and a substantially C-shaped cross section with the cut line facing downward. A clip shape 19c is provided. In addition, arrangement | positioning of the evaporator 13 grade | etc., Of 2nd Embodiment is the same as that of 1st Embodiment.

  According to the second embodiment, since the attachment portion 19 sandwiches the rib portion 16 by the elasticity of the clip shape 19c, the attachment portion 19 can be reliably attached to the rib portion 16. Further, even if there is an assembly process in which the case 11 is turned upside down after the packing member 17 is attached to the rib portion 16, it is possible to prevent the packing member 17 from being displaced or dropped by the clip shape 19c, and in a loss time. Some reassembly time can be eliminated.

  Moreover, the locking projection shape 16a of the rib portion 16 which is essential in the first embodiment can be eliminated. In addition, also in 2nd Embodiment, the effect of (1), (2), (4)-(7) enumerated in 1st Embodiment can be exhibited naturally.

(Other embodiments)
In the first and second embodiments, an example in which the packing member 17 is formed by multicolor extrusion molding processing has been shown. However, a packing material is formed by joining different materials during molding processing by multicolor injection molding processing or insert molding. Of course, 17 may be molded. Alternatively, the seal member 18 and the mounting portion 19 of the packing member 17 formed as separate parts may be fixed, for example, bonded to be integrated.

  In the first and second embodiments, the contact portion 18a of the seal portion 18 is close to the core portion 13c by a minute distance e (2 to 4 mm as a specific example) from the boundary V between the core portion 13c and the tank portion 13d of the evaporator 13. However, the predetermined distance is not limited to 2 to 4 mm.

  In the first and second embodiments, an example in which the stacked evaporator 13 is arranged has been shown. However, the shape of the evaporator 13 is not limited to this, and a multi-hole flat tube is bent in a meandering shape. Other types such as a so-called surpane type in which corrugated fins are combined with a serpentine tube may be used.

  In the first and second embodiments, the example in which the evaporator 13 is arranged so that the tank portion 13d forms the inclined lower end portion 13f is shown. However, the single tank in which the tank portion 13d is located only at the inclined upper end portion. The present invention can also be applied to types. Furthermore, it is natural that the present invention can be applied to a single tank type in which the tank portion 13d is arranged to be the inclined lower end portion 13f.

  Further, in the first and second embodiments, the example in which the evaporator 13 is disposed in the case 11 with a slope that lowers the front side of the vehicle is shown. However, the evaporator 13 is tilted with a slope that lowers the rear side of the vehicle. You may arrange. Moreover, the arrangement | positioning which inclines in the vehicle left-right direction may be sufficient.

  In the first and second embodiments, the example in which the inclination angle of the evaporator 13 is 18 ° is shown, but the inclination angle is not limited to 18 °.

  In the first and second embodiments, the air conditioning temperature control means has been described for the flow reheat type that uses a hot water control valve that controls the amount of hot water to the heater core. However, the warm air that passes through the heater core and the heater core The present invention can also be applied to an air mix type that uses an air mix damper that controls the air volume ratio with the cold air that does not pass through the air.

  Further, in the first and second embodiments, the example in which the drainage port 20 is arranged on the case wall at the back side of the paper surface in FIG. 1 is shown, but the direction in which the case bottom 11a is inclined (the lowest part of the case bottom 11a). If so, it may be placed on the case wall of any part. Moreover, you may arrange | position the drain outlet 20 in the lowest case bottom face 11a site | part where condensed water collects. Further, a hole through which condensed water dropped in the blower space 12 is allowed to pass through a part of the rib portion 16, and the condensed water dropped in the blower space 12 may be discharged to the drain port 20 of the drainage space 15.

  In the first and second embodiments, the flow direction of the blown air (from the front side to the back side in FIG. 1) and the direction in which the tube 13a of the evaporator 13 extends are described as being orthogonal. It may be.

  In the first embodiment, the example in which a plurality of the locking projections 16a are arranged at a predetermined interval has been described. However, it is natural that the ribs 16 may be arranged over the entire length in the longitudinal direction c. is there.

  The locking shape is not limited to that of the first embodiment, and may be a locking shape that can prevent the packing member 17 from coming off, or a fitting shape.

It is sectional drawing which shows a part of air conditioning unit of the vehicle air conditioner of this invention. It is a perspective view which illustrates the composition of the evaporator in a 1st embodiment. It is sectional drawing which shows the packing member in 1st Embodiment. It is a figure which shows the fitting structure of the packing member to the rib part in 1st Embodiment. It is sectional drawing which shows the state of the packing member after the evaporator assembly | attachment in 1st Embodiment. It is sectional drawing which shows the packing member in 2nd Embodiment. It is a side view which shows a part of air conditioning unit of the vehicle air conditioner concerning patent document 1. FIG. (A) is sectional drawing which shows the fitting structure of the packing member to the rib part in the comparative example 1, (b) is sectional drawing which shows the state of the rib part and packing member after an assembly | attachment. 10 is a cross-sectional view showing a rib portion and a seal portion in Comparative Example 2. FIG.

Explanation of symbols

11 ... Case, 11a ... Bottom surface, 12 ... Blower space,
13 ... Evaporator (cooling heat exchanger), 13e ... Airflow upstream surface of the evaporator,
14 ... evaporator lower space, 16 ... rib part, 16a ... locking projection (locking shape),
17 ... packing member, 18 ... seal part, 18b ... cushion part, 18c ... hollow part,
19 ... mounting portion, 19b ... claw shape (locking shape).

Claims (7)

A case (11) that forms an air passage through which air flows toward the passenger compartment;
Heat exchange for cooling that is arranged in the case (11) so as to be inclined at a predetermined angle (θ) from a horizontal plane, introduces the air from the lower space (14), cools it, and guides the cooled air upward. A vessel (13);
A rib portion (16) formed integrally with the bottom surface (11a) of the case (11) located below the cooling heat exchanger (13) ;
A packing member (17) disposed between the cooling heat exchanger (13) and the rib portion (16) ;
The rib portion (16) has a protruding shape protruding upward from the case bottom surface (11a),
The rib portion (16) has a longitudinal direction in a direction (c) perpendicular to the inclined direction (b) of the cooling heat exchanger (13),
In the lower space (14), the ribs (16) and the packing member (17) drain condensed water generated in the ventilation space (12) through which conditioned air flows and the cooling heat exchanger (13). It is partitioned into a space (15)
The packing member (17) is formed of an elastically deformable elastic material, the sealing portion contacting the lower surface (13e) of the air flow upstream side of the cooling heat exchanger (13) and (18), the seal An attachment portion (19) formed of a material having higher rigidity than the portion (18) and fitted into the rib portion (16) ;
The seal portion (18) includes a plate-like contact portion (18a) in contact with the lower surface (13e) and the plate-like contact portion (18a) positioned below the plate-like contact portion (18a). An air conditioner for a vehicle, characterized in that a cushion part (18b) having a hollow part (18c) that enables displacement in the vertical direction of 18a) is formed . The packing member (17) is formed by integrally molding a material forming the seal portion (18) and a material forming the attachment portion (19). Vehicle air conditioner. The vehicle air conditioner according to claim 2, wherein the packing member (17) has a constant cross-sectional shape in the longitudinal direction. The air conditioning system for vehicles according to claim 1, wherein the packing member (17) is formed by fixing the seal portion (18) and the attachment portion (19) which are respectively formed separately. apparatus. The attachment portion (19) and the rib portion (16) each have a locking shape (16a, 19b) for preventing the attachment portion (19) from coming off. The vehicle air conditioner according to claim 1. 5. The vehicle according to claim 1, wherein the attachment portion (19) has a clip shape (19 c) that sandwiches the rib portion (16) by using elasticity. 6. Air conditioner. The vehicular body according to any one of claims 1 to 6, wherein the hollow portion (18c) has a rhombus shape in cross section so that the cushion portion (18b) has a pantograph shape in cross section . Air conditioner.

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