JPS61150815A - Air conditioner for automobile - Google Patents

Abstract

PURPOSE:To easily carry out the mounting work of an evaporator by positioning an opening for accommodating the evaporator in the partition wall of a car room and a caul portion, namely, in the position reached by a head from the outside of the car room. CONSTITUTION:A bolt 15 for fastening a unit case 1 and a blower case 6 which compose the housing of an overall device is detached, and the blower case 6 is lifted upwardly. And an opening 3 for accommodating an evaporator 2 which is located upwardly in the upper portion of the unit case 1 appears. Since the blower case 6 and the opening 3 are provided in a caul portion, it is possible to easily and rapidly carry out the demounting of the blower case 6 and the accommodating work of the evaporator 2 from the opening 3. And the accommodated evaporator 2 is stably supported by the flange portion and the partition wall which are formed in wall surfaces of both sides of the unit case 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air conditioner for an automobile in which a blower is installed in a cowl portion outside the vehicle interior.

[Prior Art] Automotive air conditioners that have been commonly used in the past have a blower, evaporator, and Because the heater core was housed in the vehicle, the passenger seat's footwell was narrow, and the noise from the blower inside the vehicle was audible.

As a countermeasure, a method was devised to move the blower to the cowl area outside the vehicle, house only the evaporator and heater core in an integrated case, and install it in the center of the lower part of the instrument panel. Figure 6
: and Figure 7 are a side sectional view and a front view of the device explaining the installation situation of this type of air conditioner and a simplified illustration of the order of storage of the evaporator, respectively, where A is the driver's instrument panel and B is the cowl part. , 2 is an evaporator, 5 is a heater core, 50 is an integrated case for storing a gas exchanger, 4 is a blower, 51 is a blower case, and D is a partition wall separating the cowl portion B from the vehicle interior. When installing a cooler after purchasing a car, the evaporator 2 is pushed in through the evaporator storage opening 52 provided on the side wall of the integral case 50 and installed inside the case, and then the opening 52 is filled with a sealing material 54. The applied cover unit 53 was designed to provide a liquid-tight seal.

[Problems to be Solved by the Invention] The automobile air conditioner having the above-mentioned configuration is difficult to install when installing the cooler after purchasing the automobile in a narrow passenger compartment. In the past, the work of inserting and attaching the evaporator 2 from the 52 was extremely difficult and time consuming.

SUMMARY OF THE INVENTION An object of the present invention is to provide an air conditioner for an automobile in which an evaporator can be easily installed in a case of the device when a cooler is installed.

[Means for Solving the Problems] In order to achieve the above object, the automotive air conditioner of the present invention provides a vehicle air conditioner in which a cowl portion is formed between the engine room and the passenger compartment. It has a partition part provided between the cowl part, an opening in the partition part, an air upstream opening end facing the opening and opening upward, and an air outlet into the vehicle interior. and a unit case forming an air passage, an evaporator of a refrigeration cycle disposed in the unit case from the opening end, and an inlet and an outlet for conditioned air, the outlet opening the opening. A configuration is adopted that includes a blower case provided in the cowl portion so as to cover the blower case, and a blower provided in the blower case to suck air from the suction port.

[Function] The automotive air conditioner of the present invention having the above configuration has the following features:
The evaporator storage opening faces the partition wall between the vehicle interior and the cowl portion, that is, the opening provided at a location that can be reached from outside the vehicle interior, thereby facilitating the installation of the evaporator.

Since the blower is installed in the cowl, the blower noise is expelled to the outside of the vehicle.

[Example J] Below, the automotive air conditioner of the present invention will be specifically explained based on the accompanying drawings.

FIG. 1 is a side sectional view showing a situation in which the automotive air conditioner of the present invention is installed in a passenger car, in which A is the driver's seat instrument panel, B is the cowl portion, and D is the passenger compartment and the cowl portion. A partition wall between the partition wall, E is an opening provided in the partition wall, F is a hood, and G
is the car body floor, and H is a drainage tube that extends downward through the car body floor.

There is an evaporator storage opening 3 at the top of the unit case 1 for housing the cooling unit and heater unit.
A cooling unit having the evaporator 2 as its main component, a heater unit having the heater core 5 as its main component, and an air mix damper 7 are housed inside. 10 is a face outlet for conditioned air, 11 is a defrost outlet, 12 is a hood outlet, and 13 is a side outlet, and each outlet is provided with a damper. The unit case 1 is made of synthetic resin by injection molding or blow molding.
At least a portion below the position where the evaporator 2 is housed is provided with a seamless structure. , 1a is a flange portion provided on the outer surface of the case for mounting the case 1, and 21 is a flange portion for storing the evaporator 2, which is integrally formed inside the case 1 or is prepared and assembled separately. 16 is a drain port provided at the bottom of the case, and H is a drain tube connected to the drain port 16.

4 is a blower for introducing outside air and circulating air inside the vehicle, and 6 is a blower case. Like the unit case 1, the blower case is made by injection or blow molding of synthetic resin, and has an air outlet 14 that opens downward.
7 langes 6a are provided for attaching the case 6. Reference numeral 15 denotes bolts and nuts for fastening and combining the unit case 1 and the blower case 6, which are attached to the flange portion 1a of the unit case 1, the periphery of the opening E of the cowl partition wall, and the flange portion 6a of the blower case 6.
The bolts are inserted through bolt holes provided in the respective parts, and these three parts are fastened together.

FIG. 2 is a sectional view taken along line (A)-(A) in FIG.
An inside air inlet 18 and an inside/outside air switching damper 19 are attached. 20 is a motor for driving the blower 4, and other symbols are the same as those in FIG. 1.

FIGS. 3 and 4 are a side end view of the device, respectively, illustrating a state in which the blower case 6 for storing the evaporator 2 in the unit case 1 has been separated and lifted from the unit case 1, and FIG. B)-(B) A sectional view, and the reference numerals in the figure are the same as those in the above.

FIG. 5 is a perspective view showing the internal structure of the blower case 6, in which 30 is a negative pressure actuator for rotating the internal/external air switching damper 19, 31 is the actuating rod of the actuator, 32 is a hook, and 33 is the rotation axis of the damper 19. An arm 34 is fixed to one end, and when a pin 35 implanted in the arm is engaged with the hook 32, the actuator 3
0 operation is transmitted to the damper 19. Other symbols in the figure are the same as those described above.

Next, the functions of the device of the present invention will be explained. In order to reduce the selling price of a car, when a cooler is later installed in a vehicle that is equipped with an air conditioner that incorporates only the heater core 5 for heating, as shown in the figure, the housing of the entire device can be configured. unit case 1 and prowa case 6
By removing the fastening bolts 15 and lifting the blower case 6 upward, the opening 3 for storing the evaporator 2 located upwardly in the upper part of the unit case 1 appears. Since the blower case 6 and the opening 3 are provided in the cowl part, the blower case can be removed and the opening 3
The work of storing the evaporator 2 from inside the vehicle is much easier and faster than the conventional method of storing the evaporator 2 from inside the vehicle. The housed evaporator 2 is stably supported by seven flange portions 1a and a partition 21 formed on both side wall surfaces of the unit case 1.

Unit 1 - The case 1 is made by injection molding of synthetic resin as mentioned above, and has a seamless integral structure from the storage opening 3 of the evaporator 2 downward as shown in the figure. Unlike conventional devices in which the opening for housing the evaporator is provided on the side wall surface of the unit case as shown in Figures 5 and 6, condensed water generated on the surface of the evaporator 2 during cooling flows through the joints of the case. This can completely eliminate the inconvenience of water leaking from the inside of the vehicle and making the interior of the vehicle wet. Condensed water is discharged to the outside of the vehicle from a drain port 16 at the bottom of the case through a drain tube H that penetrates the floor of the vehicle body.

[Effects of the Invention] The automotive air conditioner of the present invention has the following effects.

b) When installing the cooler after purchasing the car, the evaporator storage opening provided in the unit case is located in the cowl outside the passenger compartment, making installation or inspection of the evaporator extremely easy and quick. can.

Mouth) Since the blower is installed in the cowl, you can be freed from blower noise.

[Brief explanation of the drawing]

FIG. 1 is a side cross-sectional view showing a state in which the automotive air conditioner of the present invention is mounted on a vehicle body, and FIG. 2 is a cross-sectional view of FIG.
b) Sectional view, Figure 3 is a side sectional view showing the state where the blower case 6 is separated from the unit case 1 and lifted up.
The figures are a cross-sectional view taken along line (B)-(B) of Fig. 3, Fig. 5 is a perspective view showing the internal structure of the blower case 6, Fig. 6 is a side sectional view of a conventional air conditioner for an automobile, and Fig. 7 FIG. 7 is a longitudinal sectional view illustrating a situation in which the evaporator is housed in the apparatus shown in FIG. 6; In the diagram: 1... Unit case 2... Evaporator 3... Evaporator storage opening 4... Blower 6
...Prower case A...Instrument panel B...Cowl part D...Partition wall between vehicle interior and cowl part E...
opening in partition wall

Claims (1)

[Claims] 1) In a vehicle in which a cowl portion is formed between an engine room and a passenger compartment, a partition portion provided between the passenger compartment and the cowl portion, and an opening in the partition portion. an air upstream opening end facing the opening and opening upward, and a unit case having an air outlet into the vehicle interior to form an air passage; and a unit case forming an air passage from the opening end into the unit case. an evaporator of a refrigeration cycle disposed in the refrigeration cycle; a blower case having an inlet and an outlet for conditioned air and provided within the cowl portion such that the outlet covers the opening; An air conditioner for an automobile, comprising: a blower for sucking air from the suction port.