JPH11180136A - Air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use in a vehicle without an air conditioner the cooling unit case for the vehicle with an air conditioner as a continuous duct. SOLUTION: An air conditioner unit case 2 for an air conditioner unit 1 is made by integrally forming the external case for the cooling unit and the inside/outside air selector. For a vehicle without an air conditioner, cooling unit parts including evaporator are removed from a cooling unit portion 3, with a plastic ventilation resistance board 5 disposed instead. The upper and lower ends of the ventilation resistance board 5 are formed into hung portions 5a and 5b extruded horizontally. The hung portions 5a and 5b are tapered by reducing their tips, and pinched by recessed portions 2a and 2b formed at the upper and lower ends of the unit case 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for a vehicle in which a case of an inside / outside air adjusting device for switching air inside and outside a vehicle and a case of a cooling unit of a cooling device are integrated.

[0002]

2. Description of the Related Art FIG. 6 shows a part of an air conditioner of an automobile, and shows an inside / outside air switching device 30 and a cooling unit 31 of a cooling device. These are mounted in a vehicle compartment, and the inside / outside air switching device 30 is provided with an inside air port 30a for introducing air inside the vehicle compartment and an outside air port 30b for introducing air outside the vehicle. A cooling unit such as an evaporator 33 is disposed inside the cooling unit 31. The cooling unit 31 has a suction duct 32a having one end opened.
Are connected to an outlet (not shown) of the inside / outside air switching device 30. Discharge duct 3 at the other end opening of cooling unit 31
2b is connected to a heater unit (not shown) of the heating device.

The cooling unit 31 has two pipes 35 and 36 connected to a cooling component on the engine room side protruding from a case 32 of the cooling unit 31, and the water condensed in the evaporator 33 is externally provided below the pipe. A cylindrical drain pipe 38 for discharging is projected outward. The cooling unit 31 is mounted facing the dash panel 34, and pipes 35 and 36 penetrate through a long hole 34 a formed in the dash panel 34 and protrude toward the engine room. A rubber drain hose 39 is connected to the drain pipe 38 and penetrates the round hole 34b and protrudes toward the engine room. Dash panel slot 3
A grommet 4 having a hole is provided at the edge of the round hole 4a and the round hole 34b.
0, 41 are sandwiched, and the gap of the penetration part is closed. In the case of a vehicle body without a cooling device, the long holes 34a and 34b are closed using a grommet without holes.

[0004] In the above, the vehicle equipped with the cooling device has been described. When the cooling device is not mounted, a connection duct is mounted between the inside / outside air switching device 30 and the heater unit instead of the cooling unit 31. The connection duct has, for example, a bellows shape and adjusts the air resistance so that the flow of air discharged from the inside / outside air switching device 30 to the heater unit becomes appropriate.

[0005]

As described above, the components of the air conditioner are different between the vehicle with the cooling device and the vehicle without the cooling device. In such a case, it is conceivable to remove a cooling component such as the evaporator 33 in the cooling unit 31 and replace only the case 32 with a duct and connect the duct to the inside / outside air switching device 30. Was not able to cope with the large capacity and low air resistance. The present invention has been made in view of the above problem, and has as its object to provide a vehicle air conditioner that can use a case of a cooling unit as a connection duct for a vehicle without a cooling device.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention integrates a case of an inside / outside air switching device for switching air between the outside and a vehicle interior, and a case of a cooling unit of a cooling device. For a vehicle that has a unit case and is not equipped with a cooling device, a ventilation resistance plate for adjusting the flow rate of air flowing in the unit case is provided instead of the cooling component provided in the cooling unit.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle air conditioner according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an air conditioning unit 1 according to the present invention. The unit case 2 of the air-conditioning unit 1 is formed by integrally molding a cooling unit case of a cooling device and a case of an inside / outside air switching device. Can be used as That is, when installing a cooling device, an evaporator or the like is provided in the unit case 2,
It has a function as a cooling unit of a cooling device.
When a cooling device is not installed, cooling components such as an evaporator and an expansion valve can be removed from the cooling unit 3 of the air conditioning unit 1 before use.

Hereinafter, the internal structure of the air conditioning unit when no cooling device is installed will be described in detail. As shown in FIG. 1, the air conditioning unit 1 has a ventilation resistance plate 5 made of resin instead of an evaporator, arranged in a direction perpendicular to the flow of air. As shown in FIG. 2, the ventilation resistance plate 5 has an I-shaped cross section, and has projecting portions 5 projecting laterally at upper and lower ends.
a and 5b are provided. The overhang portions 5a and 5b have a tapered shape with a tapered tip, and as shown in FIGS.
a, 2b. In addition, overhang portions 5a, 5b
Is formed to have a length in contact with the side walls 2c, 2d of the recesses 2a, 2b, and the lower projecting portion 5b closes the drainage chamber 7 in which the drain hole 6 is formed. In the case of an air-conditioned vehicle, the recess 2
An evaporator is provided between a and 2b.

The width W of the flat plate portion 5c of the airflow resistance plate 5 shown in FIG. It is formed so that there is no. One vent hole 5d is formed in the center of the flat plate portion 5c, and the lid portion 5e projects forward from the vehicle body. The lid 5e is a bottomed elliptical cylinder, and is fitted inside the expansion valve box 8 via the packing 9 as shown in FIG. As a result, the lid 5e is
The expansion valve box 8 and the inside of the unit case 2 are airtightly partitioned. When the unit case 2 is used for cooling, an expansion valve is provided in the expansion valve box 8, and a refrigerant circulation pipe connected to the evaporator projects from the expansion valve box 8 toward the engine room. .

As shown in FIG. 5, two through holes 11a and 11b are formed in a dash panel 11 which separates an engine room 10 and a vehicle compartment.
Annular packings 12, 13 are fixed by an adhesive. When the air conditioning unit 1 is attached, the front end 8a of the expansion valve box 8 presses the edge of the through hole 11a with the packing 12 interposed. The drain pipe 14 protrudes through the through-hole 11b, and its mounting surface 14a presses the edge of the through-hole 11b with the packing 13 interposed. The clamps 15 in the figure are provided at several places around the periphery of the unit case 2. When the clamps 15 are removed, the unit case 2 is divided into upper and lower parts, and the ventilation resistance plate 5 and the evaporator can be replaced.

Next, the operation of the vehicle air conditioner according to the embodiment of the present invention will be described. The ventilation resistance plate 5 attached to the inside of the unit case 2 partitions the inside and forms a ventilation hole 5d through which air flows. When the air introduced from the inside / outside air switching unit 4 flows through the unit case 2, the air flows through the ventilation holes 5d to a heater unit (not shown). At this time, the air holes 5d provide flow resistance to the air in the same manner as the evaporator of the cooling device, and make the blowout amount appropriate. As shown in FIG. 4, the ventilation resistance plate 5 has overhang portions 5 a and 5 b sandwiched vertically by concave portions 2 a and 2 b of the unit case 2. Further, in the lateral direction, since the tips of the overhang portions 5a and 5b are in contact with the side walls of the recesses 2a and 2b, the mounting position does not shift. The lower protruding portion 5b airtightly partitions the inside of the drainage chamber 7 and the unit case 2, so that air leakage from the engine room 10 is eliminated.

As shown in FIG. 5, when the air-conditioning unit 1 is mounted on the vehicle body, the airflow resistance plate 5 has a cover 5 e protruding from a hole of the expansion valve box 8 so as to expand with the inside of the unit case 2. The inside of the valve box 8 is partitioned to prevent air leakage from the engine room 10. Further, the front end 8a of the expansion valve box 8 of the air conditioning unit 1 and the mounting surface 14 of the drain pipe 14
a presses the edges of the through holes 11 a and 11 b of the dash panel 11 with the packings 12 and 13 interposed therebetween. For this reason, the air in the engine room 10 flows through the through holes 11a, 1a.
There is no leakage from 1b into the room. Unit case 2
Since the same type of automobile can be used regardless of the presence or absence of the cooling device as long as it is the same type of automobile, a new mold cost can be saved. Also, the use of non-perforated grommets for dash panels of automobiles without cooling devices eliminates the need for them. Therefore, it is possible to reduce the number of parts and cost. Furthermore, since the airflow resistance plate 5 is symmetrical, it has no directionality, and can be used on both front and back sides, which is convenient.

Although the embodiments of the present invention have been described above, the present invention is, of course, not limited thereto, and various modifications can be made based on the technical concept of the present invention. For example, in the above embodiment, the airflow resistance plate 5 is provided with the air holes 5d for air resistance.
The number of d may be two or more, the shape may be an ellipse, a quadrangle, or other complicated shapes, or may be such that a large number of narrow gaps are formed.

[0014]

As described above, according to the present invention, a unit case in which the inside / outside air switching device and the case of the cooling unit are integrally formed, and a vehicle without a cooling device is installed in the cooling unit. Since a ventilation resistance plate is provided instead of the provided cooling component, the air flow rate in the unit case can be adjusted. Since the overhanging portion is provided on the ventilation resistance plate and the overhanging portion is sandwiched between the concave portions formed at the upper and lower ends of the unit case, the ventilation resistance plate can be fixed. Further, since the lower end of the overhanging portion blocks the passage of the drain hole formed in the bottom of the unit case, the air in the engine room does not enter the unit case. Since both ends of the overhanging portion are tapered, and both ends contact the side wall of the recess, the fixing force of the ventilation resistance plate is further increased.

[Brief description of the drawings]

FIG. 1 is a perspective view of an air conditioning unit of a vehicle air conditioner according to an embodiment of the present invention.

FIG. 2 is a perspective view of a ventilation resistance plate provided inside the air conditioning unit of FIG. 2;

FIG. 3 is a cross-sectional view showing a state before the ventilation resistance plate of FIG. 2 is provided in an air conditioning unit.

FIG. 4 is a cross-sectional view showing a state where the airflow resistance plate of FIG. 2 is provided in an air conditioning unit.

FIG. 5 is a partially cutaway side view of the air conditioning unit of the vehicle air conditioner according to the embodiment of the present invention.

FIG. 6 is a perspective view showing an inside / outside air switching device and a cooling unit of a conventional vehicle air conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air-conditioning unit 2 Unit case 2a, 2b Depression 2c, 2d Side wall part 5 Ventilation resistance plate 5a, 5b Overhang part 5d Vent hole 5e Cover part 8 Expansion valve box

Claims (3)

[Claims] 1. A vehicle in which a case of an inside / outside air switching device for switching air between the outside and a vehicle interior and a case of a cooling unit of a cooling device are integrally formed to form a unit case, and a vehicle without a cooling device is provided. An air conditioner for a vehicle, comprising a ventilation resistance plate for adjusting a flow rate of air flowing in the unit case, instead of a cooling component provided in the cooling unit. 2. The ventilation resistance plate has an I-shaped vertical cross-section at the time of mounting, and a laterally extending portion of the I-shape is sandwiched between concave portions formed at upper and lower ends of the unit case. The vehicle air conditioner according to claim 1, wherein the overhanging portion at the lower end side closes a passage of a drain hole formed in a bottom portion of the unit case. 3. The air conditioner for a vehicle according to claim 2, wherein both end portions of the overhang portion are tapered so that the both end portions abut against the wall of the recess.