JP2018090150A - Air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner for a vehicle which prevents entry of a foreign matter and entry of water into an air conditioning unit, and can improve productivity including comfort of a crewman, unity of a passenger compartment and assembly of a vehicle while enabling correspondence to various variations of the vehicle.SOLUTION: An air conditioner for vehicle 1 comprises: an air-conditioning duct 8 which is extended in a vehicle longitudinal direction at a corner part of a floor 6 below a seat 4 in a passenger compartment 2a and a side part wall surface 2b of the passenger compartment 2a; an air conditioning unit 10 which is located near the air-conditioning duct 8 below the floor 6 in the passenger compartment 2a; an air-conditioning passage 24 in which air-conditioning wind A2 delivered from the air conditioning unit 10 in the air-conditioning duct 8 flows; an outlet port which is opened in a side wall 8a of the air-conditioning duct 8, and blows the air-conditioning wind A2, which flows in the air-conditioning passage 24, into the passenger compartment 2a; an inside air passage 26 in which room air A1 flows in the air-conditioning duct 8; and an inlet port 14 which is opened in the side wall 8a of the air-conditioning duct 8, and introduces the room air A1 from the passenger compartment 2a into the inside air passage 26.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle air conditioner, and more particularly to a vehicle air conditioner for a large sightseeing bus.

  This type of vehicle air conditioner includes an air conditioning duct that extends in the vehicle front-rear direction at the corner between the floor under the seat in the passenger compartment and the side wall of the passenger compartment, and the vicinity of the air conditioning duct under the floor in the passenger compartment. An air conditioning unit that takes in indoor air from the passenger compartment and sends out the conditioned air to the air conditioning duct, an air conditioning passage that is formed in the air conditioning duct and through which the air conditioning air sent from the air conditioning unit flows, and the air conditioning duct There is known a device provided with an air outlet that is opened in a side wall of the vehicle and blows out air-conditioned air flowing through an air-conditioning passage to a passenger compartment.

  And in patent document 1, the upper part of the heater unit which is an air-conditioning unit provided under the floor in a vehicle interior is provided for the vehicle which provided the air inlet which takes in indoor air from a vehicle interior so that it might protrude upwards from a floor An air conditioner is disclosed.

JP 2008-49984 A

  Generally, as described in Patent Document 1, the air intake port needs to protrude upward from the floor and be separated from the floor in order to prevent water from entering the air conditioning unit. For this reason, in order not to obstruct the occupant seated on the seat and to supply air-conditioned air to the feet of the seated occupant, it is common to provide the air inlet on the floor under the seat.

However, there are various variations in the seat arrangement depending on the vehicle type and the user's request. For this reason, conventionally, the position of the intake port is changed in accordance with the seat arrangement, and as a result, the design of the vehicle body structure is changed in accordance with the position of the intake port. This cannot improve the productivity of the vehicle.
In addition, air-conditioning air outlets are provided on the side walls of the air-conditioning duct, whereas indoor air intakes are provided so as to protrude from the floor, making it difficult to unify the interior of the passenger compartment.

  Moreover, conventionally, as described in Patent Document 1, a long air-conditioning duct must be assembled over the front and rear of the vehicle. The air-conditioning duct is generally made of resin, but depending on the season of assembling, the long air-conditioning duct expands and warps, and the assembling property of the air-conditioning duct to the passenger compartment deteriorates.

  The present invention has been made to solve at least a part of such problems. The object of the present invention is to suppress foreign matter intrusion and water intrusion into the air conditioning unit, and to various variations of the vehicle seat arrangement. It is an object of the present invention to provide a vehicle air conditioner that can improve the productivity including passenger comfort, a sense of unity of the passenger compartment, and vehicle assembly.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following aspects or application examples.

(1) A vehicle air conditioner according to this application example includes an air conditioning duct that extends in a vehicle front-rear direction at a corner between a floor under a seat in a vehicle interior and a side wall surface of the vehicle interior, and a floor under the vehicle interior An air conditioning unit that is arranged in the vicinity of the air conditioning duct, takes in the room air of the passenger compartment, and sends out the temperature-controlled air conditioning airflow to the air conditioning duct, and an air conditioning passage formed in the air conditioning duct through which the air conditioning air sent from the air conditioning unit flows And an air outlet that is opened in the side wall of the air conditioning duct and blows out the conditioned air flowing through the air conditioning passage to the passenger compartment, an interior air passage that is formed in the air conditioning duct and supplies room air to the air conditioning unit, and an opening in the side wall of the air conditioning duct And an intake port for taking in indoor air from the vehicle compartment to the inside air passage. As a result, air conditioning ducts are provided with air outlets and air intakes on the side walls, so there is no need to change the position of the air intakes even if the seat arrangement is changed depending on the vehicle type or the user's request. There is no need to do.

(2) In the vehicle air conditioner according to this application example, the air conditioning duct has a partition wall that partitions the air conditioning passage and the inside air passage in the vicinity of the intake port. Thereby, it is possible to suppress heat transfer between the air conditioning passage and the inside air passage as much as possible with a simple configuration.
(3) In the vehicle air conditioner according to this application example, the air inlet and the air outlet are provided at substantially the same height from the floor of the side wall of the air conditioning duct. Thereby, the penetration | invasion of a foreign material can be suppressed from a floor via an air inlet into an air-conditioning duct.
(4) In the vehicle air conditioner according to this application example, the air inlet and the air outlet have substantially the same appearance. This makes it impossible to distinguish between the air inlet and the air outlet at first glance, so that an interior with a sense of unity can be realized in the entire vehicle compartment.

(5) In the vehicle air conditioner according to this application example, a plurality of air conditioning units are provided, and an air conditioning duct having an air inlet is provided for each air conditioning unit. Thereby, the length of an air-conditioning duct is divided | segmented and the assembly | attachment deterioration by expansion | swelling and curvature can be suppressed.

  According to the vehicle air conditioner of the present invention using the application example, it is possible to suppress foreign matter intrusion and water intrusion into the air conditioning unit, and to cope with variations of various seat arrangements of the vehicle, Productivity can be improved, including a sense of unity in the passenger compartment and ease of assembly of the vehicle.

It is the perspective view which showed a part of vehicle compartment provided with the vehicle air conditioner which concerns on one Embodiment of this invention. It is the front view which looked at FIG. 1 from the front side of the vehicle. It is the side view which looked at FIG. 1 in the vehicle front-back direction.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a part of a passenger compartment 2a of a vehicle 2 such as a large sightseeing bus provided with a vehicle air conditioner 1 according to an embodiment of the present invention. In the passenger compartment 2a, a plurality of seats 4 are arranged in the vehicle width direction X and the vehicle longitudinal direction Z, and each seat 4 is supported on the floor 6 of the passenger compartment. A heater duct (air conditioning duct) 8 extends in the vehicle longitudinal direction Z at the corner between the floor 6 under the seat 4 and the side wall surface 2b of the passenger compartment 2a. A similar heater duct 8 is also arranged at the corner of the other side wall surface 2b (not shown) of the passenger compartment 2a.

  A heater unit (air conditioning unit) 10 is arranged near the heater duct 8 described above under the floor 6 in the passenger compartment 2a. The heater unit 10 takes in the indoor air A1 (shown by a broken line arrow) of the passenger compartment 2a through a connection duct 12 arranged below the floor 6, and adjusts the temperature of the warm air (conditioned air) A2 (shown by a one-dot chain line arrow). Is sent to the heater duct 8. The side wall 8a of the heater duct 8 has an air inlet 14 for taking in the indoor air A1 from the passenger compartment 2a to the heater unit 10 and an outlet 16 for blowing the warm air A2 sent from the heater unit 10 into the passenger compartment 2a. Has been.

  FIG. 2 is a partial cross-sectional view of FIG. 1 viewed from the front side of the vehicle 2. The heater unit 10 includes, for example, a heater core 18, a centrifugal blower 20 having an impeller 20a, and pipes 22a and 22b. By operating the centrifugal blower 20, the indoor air A1 is taken in through the pipe 22a toward the lower side in the axial direction of the impeller 20a (vehicle height direction Y in FIG. 2). The taken indoor air A1 is supplied to the heater core 18 to generate hot air A2. The generated warm air A2 is sent out through the pipe 22b toward the outside in the radial direction of the impeller 20a (vehicle width direction X in FIG. 2).

  Here, the vehicle air conditioner 1 of the present embodiment supplies the warm air passage (air conditioning passage) 24 through which the warm air A2 sent from the heater unit 10 flows in the heater duct 8, and the room air A1 to the heater unit 10. The inside air passage 26 is formed. The hot air passage 24 and the inside air passage 26 are partitioned by a partition wall 28 formed in the heater duct 8. The partition wall 28 is not formed over the entire vehicle longitudinal direction Z in the heater duct 8 but is formed only in the vicinity of the air inlet 14. In the connection duct 12, a hot air passage 30 that communicates with the hot air passage 24 and an internal air passage 32 that communicates with the internal air passage 26 are partitioned by a partition wall 34.

  The indoor air A1 in the passenger compartment 2a is sequentially taken into the internal air passages 26 and 32 through the intake port 14 by the operation of the centrifugal blower 20, and is supplied to the heater core 18 through the pipe 22a to generate hot air A2. . The generated hot air A2 is sequentially sent to the hot air passages 30 and 24 through the impeller 20a and the pipe 22b in order, and blown out from the outlet 16 shown in FIG. 1 to the vehicle compartment 2a. Thus, the heater duct 8 has a double passage structure that allows the indoor air A1 and the hot air A2 to flow without being mixed. In addition, at least the air inlet 14 is provided with a filter 36 that prevents foreign matter from entering the heater unit 10 from the air inlet 14.

  FIG. 3 is a side view of FIG. 1 viewed in the vehicle longitudinal direction Z. The air inlet 14 and the air outlet 16 are provided at substantially the same height H from the floor 6 of the side wall 8 a of the heater duct 8. The height H can prevent water from entering the heater duct 8 from the floor 6 through the air inlet 14, and can suitably supply the warm air A <b> 2 to the feet of the passenger seated on the seat 4. It is set in consideration of the distance that can be.

  As shown in FIG. 3, a plurality of heater units 10 are provided according to the volume of the passenger compartment 2 a, the number and arrangement of the seats 4, the required heating performance, and the like, and the heater duct 8 is provided for each of the plurality of heater units 10. It has been. That is, a plurality of heater ducts 8 obtained by dividing a conventional long heater duct are provided in the passenger compartment 2a.

  In addition, one intake port 14 is provided for each heater duct 8 in the case of FIG. 3, and one or two outlets 16 are provided for each seat 4 located in the vicinity of the heater duct 8. ing. The air inlet 14 and the air outlet 16 have substantially the same rectangular appearance, for example, and one set of the air inlet 14 and the air outlet 16 or the two air outlets 16 are located at substantially the same position under each seat 4. Is positioned. That is, at first glance, the air inlet 14 and the air outlet 16 cannot be distinguished from each other, so that the interior of the passenger compartment 2a as a whole is realized.

  As described above, in the present embodiment, a double passage structure is formed by the hot air passage 24 through which the hot air A2 flows in the heater duct 8 and the indoor air passage 26 through which the indoor air A1 flows, and the intake port 14 is provided on the side wall 8a of the heater duct 8. The blower outlet 16 is formed. Thereby, it is not necessary to separately provide the intake port 14 so as to protrude upward from the floor 6 under the seat 4. For this reason, even if the arrangement of the seats 4 is changed according to the vehicle type or the user's request, it is not necessary to change the design of the vehicle body structure. Therefore, the productivity of the vehicle 2 can be greatly improved as compared with the conventional case.

  Further, the partition wall 28 that partitions the warm air passage 24 and the inside air passage 26 in the heater duct 8 is not formed over the entire vehicle longitudinal direction Z in the heater duct 8, but only in the vicinity of the intake port 14. Is formed. As a result, it is possible to realize the vehicle air conditioner 1 with a simple configuration and high thermal efficiency that suppresses heat transfer from the warm air A2 to the indoor air A1 as much as possible. In addition, if a heat insulating material is used for the partition wall 28, further improvement in thermal efficiency of the vehicle air conditioner 1 can be expected.

  Further, the air inlet 14 and the air outlet 16 are provided at substantially the same height H from the floor 6 of the side wall 8 a of the heater duct 8. The height H can prevent water from entering the heater duct 8 from the floor 6 through the air inlet 14, and can suitably supply the warm air A <b> 2 to the feet of the passenger seated on the seat 4. It is set in consideration of the distance that can be. For this reason, a passenger | crew's comfort can be improved, suppressing the foreign material penetration | invasion and water intrusion to the heater unit 10. FIG.

  In addition to being provided at substantially the same height H from the floor 6 of the side wall 8a of the heater duct 8, the air inlet 14 and the air outlet 16 have substantially the same appearance, and further, one set of air inlets. 14 and the blower outlet 16 or the two blower outlets 16 are located in the substantially the same position under each sheet | seat 4. As shown in FIG. Thereby, the sense of unity of the interior of the passenger compartment 2a can be greatly improved.

  A plurality of heater units 10 are provided, and a heater duct 8 is provided for each of the plurality of heater units 10. That is, a plurality of heater ducts 8 obtained by dividing a conventional long heater duct are provided in the passenger compartment 2a. As a result, it is possible to suppress deterioration in assemblability due to expansion and warping that has occurred in conventional long heater ducts.

Although the description of the embodiment of the present invention has been completed above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, the vehicle air conditioner 1 of the present invention described above can be applied to a cooling device including a cooling unit, and can also be applied to a bus other than a large sightseeing bus and a vehicle other than a bus. Of course.

DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 2 Vehicle 2a Car interior 2b Side wall surface 4 Seat 6 Floor 8 Heater duct (air conditioning duct)
8a Side wall 10 Heater unit (air conditioning unit)
14 Air inlet 16 Air outlet 24 Hot air passage (air conditioning passage)
26 Inside air passage 28 Partition wall

Claims (5)

An air conditioning duct extending in the vehicle front-rear direction at the corner between the floor under the seat in the passenger compartment and the side wall of the passenger compartment;
An air conditioning unit that is disposed in the vicinity of the air conditioning duct below the floor in the vehicle interior, takes in the indoor air of the vehicle interior, and sends out temperature-controlled air conditioned air to the air conditioning duct;
An air conditioning passage formed in the air conditioning duct and through which the conditioned air sent from the air conditioning unit flows;
An air outlet that is opened in a side wall of the air conditioning duct and blows out the conditioned air flowing through the air conditioning passage to the vehicle compartment;
An inside air passage formed in the air conditioning duct and supplying the room air to the air conditioning unit;
An air conditioner for vehicles, comprising: an air inlet that is opened in a side wall of the air conditioning duct and takes in the room air from the vehicle compartment to the inside air passage.   2. The vehicle air conditioner according to claim 1, wherein the air conditioning duct includes a partition wall that partitions the air conditioning passage and the inside air passage in the vicinity of the air inlet.   The vehicle air conditioner according to claim 1 or 2, wherein the air inlet and the air outlet are provided at substantially the same height from the floor of the side wall of the air conditioning duct.   The vehicle air conditioner according to any one of claims 1 to 3, wherein the air inlet and the air outlet have substantially the same appearance. A plurality of the air conditioning units are provided,
The vehicle air conditioner according to any one of claims 1 to 4, wherein the air conditioning duct having the air inlet is provided for each of the air conditioning units.

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