JPH0450021A - Aspirator structure of automatic air conditioning device - Google Patents

Abstract

PURPOSE:To prevent thermal effect to an in-car sensor disposed near a floor due to coming-up hot atmosphere from a floor surface by blowing off air flowing out of the air discharge port of an aspirator body to the floor surface from a nozzle for air diffusing and cooling. CONSTITUTION:When air is blown off to an aspirator body 20 from a heater unit 8, negative pressure is generated by this air flow, and cabin inner air is sucked in an inner car sensor 23 by ejector action to detect cabin inner temperature. The air flowing out to the air discharge port 22 side of the aspirator body 20 is directed by a nozzle 25 and is blown out to the floor tunnel part 17 surface exposed at the out part 19a from the end of the nozzle 25, as indicated by an arrow 'b'. As a result, hot atmosphere of the floor tunnel part 17 surface is diffused as indicated by an arrow 'b', and the floor tunnel part 17 surface is cooled, so that it is possible to avoid generation of hot atmosphere toward the in-car sensor 23.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an aspirator structure for an automatic air conditioner for automobiles.

BACKGROUND ART FIGS. 4 to 6 show a conventional structure. Reference numeral 1 denotes an intake unit incorporating a blower fan 2 and an intake door 3. The intake door 3 switches between an internal air port 4 and an external air port 5. Reference numeral 6 denotes a cooler unit connected to the intake unit 1, which includes an evaporator 7 therein, and a heater unit 8 having a built-in heater core 9 connected to its downstream side.

The heater unit 8 is disposed on the floor tunnel section 17, and supplies the air whose temperature has been adjusted by the operation of the air mix door 10 to the foot opening 14, the defroster 15, or under the control of the foot door 11, the differential door 12, and the vent door 13. The air is blown out from a ventilator 16. In addition, an aspirator body 2 is provided near the foot opening 14 of the heater unit 8.
The air blown from the heater unit 8 to the aspirator main body 20 causes the inker sensor 23 (inside air sensor) arranged on the front of the instrument panel 18 to suck indoor air, and the inker sensor 23 By detecting the indoor temperature, the temperature, air volume, etc. of the air blown out from the heater unit 8 can be automatically controlled. Specifically, as shown in FIG.
and an intake port 21 and the inker sensor 23.
are communicated with each other through a duct 24, and a negative pressure is generated in the intake port 21 by the air flow 8a blown out from the heater unit 8.
The ejector action causes the inker sensor 23 to suck in the air inside the vehicle.

This similar structure is shown, for example, in Service Bulletin No. 615, published by Augustan Jidosha Co., Ltd., December 1989, page E-89.

Problems to be Solved by the Invention A floor carpet 19 is laid on the floor 17A, and a notch 19a is provided in the area on the floor tunnel portion 17 where the heater unit 8 is disposed to avoid interference with the heater unit 8. It is provided in the carpet 19. On the other hand, the above-mentioned inker and sensor 23 are located at a low position relatively close to the floor tunnel section 17 at the center of the front of the instrument panel 18 to avoid direct sunlight and to detect the average temperature of the cabin air. It is arranged. As a result, hot air rising from the notch 19a from the exhaust pipe (not shown) or the propeller shaft may thermally affect the inker sensor 23, and there is a possibility that the inker sensor 23 will not be able to properly detect the indoor temperature. be.

Therefore, the present invention provides an aspirator structure for an automobile auto air conditioner that can prevent the hot air from rising up to the inker sensor and allow the inker sensor to properly detect the indoor temperature.

Means for Solving the Problem The air intake port of the aspirator body, which is connected to the heater unit, and the inker sensor installed on the instrument panel are connected through a duct, and air is blown out from the heater unit to the aspirator body. In the structure in which negative pressure is generated at the intake port by the flow, and indoor air is sucked into the inker sensor by the ejector action, the air discharge port of the aspirator body directs the discharged air toward the floor near the aspirator body. It is equipped with a nozzle that blows out water.

Action The air blown out from the air outlet of the aspirator body is
Directionally guided by the nozzle, the air blows onto the floor near the aspirator body, diffusing the hot air on the floor and exerting a cooling effect.

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, with the same reference numerals assigned to the same parts as in the conventional structure.

In FIGS. 1 and 2, the heater unit 8 is disposed on the floor tunnel part 17, and the heater unit 8 has an aspirator main body at a position close to the surface of the floor tunnel part 17 exposed in the notch 19g of the floor carpet 19. 20
In one point, the intake port 21 of the aspirator body 20 and the inker sensor 23 disposed at a relatively low position in the front center part of the instrument panel 18 are connected and connected through a duct 24. The basic structure is the same as that of the prior art, including the fact that the inker sensor 23 is made to suck indoor air.

Here, the air outlet 22 of the aspirator body 20 is equipped with a nozzle 25 that directs and blows out the discharged air toward the surface of the floor tunnel portion 17 exposed in the notch 19a near the aspirator body 20. . In this embodiment, the nozzle 25 is formed into an elbow shape, and an annular groove 25a formed at the mounting end of the nozzle 25 is engaged with an annular rib 222L provided on the outer periphery of the end of the air outlet 22. , the nozzle 25 is rotatable. Therefore, the nozzle 25 is rotated and adjusted so as to obtain the optimum wind direction position toward the floor tunnel portion 17 surface.

According to the structure of the above embodiment, when the air 8a is blown from the heater unit 8 to the aspirator main body 20, negative pressure is generated in the intake port 21 by this air flow 8a, and the incar sensor 23 is exposed to the air inside the vehicle due to the ejector action. The temperature of the air inside the vehicle is detected by inhaling the air. Here, the air flowing out to the air outlet 22 side of the aspirator main body 20 is deflected from the air outlet 22 by the nozzle 25, and is sent from the end of the nozzle 25 to the notch +9a1. :G floor tunnel section 17
It is blown onto the surface as shown by arrow a in FIG. As a result,
The hot air on the surface of the floor tunnel section 17 is diffused as shown by the arrow in the figure, and the surface of the floor tunnel section 17 is cooled.
Hot air can be prevented from rising toward the inker sensor 23.

FIG. 3 shows a different example of the nozzle. The tip of the nozzle 26 is formed into a flat fan shape so that the emitted air can be blown out over a wide area onto the floor tunnel section 17, thereby further enhancing the cooling effect. This is what I did.

Effects of the Invention As described above, according to the present invention, the air flowing out from the air outlet of the aspirator main body is directionally guided by the nozzle toward the floor near the aspirator main body and blown onto the floor surface. The hot air can be diffused and cooled. As a result, hot air does not rise from the floor surface and have a thermal effect on the inker sensor installed near the floor, allowing the inker sensor to properly detect the temperature of the indoor air, ensuring temperature control accuracy. It has the advantage of increasing the

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing one embodiment of the present invention, FIG. 2 is a sectional view of the same essential parts, FIG. 3 is a schematic perspective view showing a different example of the present invention, and FIG. 4 is a schematic perspective view showing an embodiment of the present invention. A schematic perspective view showing a conventional structure;
FIG. 5 is a schematic sectional view of the same, and FIG. 6 is a sectional view of the aspirator main body. 8...Heater unit, +7A-・Floor, 18.Instrument panel, 20...Aspirator body, 2
DESCRIPTION OF SYMBOLS 1...Intake port, 22...Air discharge port, 23...Inker sensor, 24...Duct, 25.26...-Nozzle. Fig. 1 Fig. 2 8-----Heater unit 7F +7A---Floor +8----Instrument 111/20----
1 piece 21 ------- Pit 22 ---- V digit 7 mouth 23 ---- 1 nzu (γzu 24 ------- Duct 25.26 ---/Suru Figure 5 Figure 6

Claims (1)

[Claims] (1) The intake port of the aspirator body, which is connected to the heater unit, and the inker sensor installed on the instrument panel are connected through a duct, and the airflow blown from the heater unit to the aspirator body is used to connect the intake port to the aspirator body. In the structure in which negative pressure is generated in the inker sensor to cause indoor air to be sucked into the inker sensor by an ejector action, the discharged air is directionally guided and blown out toward the floor near the aspirator body through an air discharge port of the aspirator body. An aspirator structure for an auto air conditioner for automobiles, which is characterized by being equipped with a nozzle.