JPS59102613A - Defroster duct of air conditioner - Google Patents

Abstract

PURPOSE:To simplify constitution by installing a main and a sub upward blow- off ports at the front and back and forming a guide part for introducing wind from the upper part to the rear part through the main blow-off port, when the sub flow-off port is closed, in the captioned duct for car. CONSTITUTION:A partitioning plate 23 is arranged onto a defroster grille 21 connected to a duct arranged in the direction of car width, and a main blow-off port 17 and a sub blow-off port 19 at the back of the main blow-off port 17 are formed in arrangement on the front window 11 side on the upper-panel surface of an instrument panel 1. A guide part 25 having an R on the main blow-off port 17 side is formed at the blow-off port edge of the partitioning plate 23. When an opening and closing valve 37 is opened in this constitution, the air in a heater unit 33 is blown-off upwardly from the both blow-off ports 17 and 19, and a defroster and an air conditioner operate. Further, even if the opening and closing valve 37 is closed, air is sent rearward from the blow-off port 17 by the aid of the guide 25, and the function as ventilator is developed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a defroster duct for an air conditioner in an automobile or the like.

A conventional defroster door 1 is heated as shown in FIGS. 1 and 2 by spraying hot water onto the windshield (panel) to prevent fogging. That is, one end of the defroster duct 3 piped inside the instrument panel 1 is communicated with the air outlet 5 installed on two sides of the panel 1, and the other end is connected to the defroster door 7. When the defroster door 7 is opened, warm air is blown onto the front window 11 (
Clear the fog on Wind 11 by pressing C. On the other hand, 17 m
When in use, a ventilator outlet 13 that blows cool air backwards after cooling down and a ventilator duct 15 that communicates with the outlet 13 are installed in the heater unit 9 separately from the defroster duct 3. 5th year middle school
0 is an outside air intake port, 52 is a blower motor, 54 is a vaporizer, 59 is a duct for the side bench 57, 60 is a dartboard panel, 62 is a floor panel, and 64 is a floor tunnel section.

Until now, such a configuration required separate dedicated ducts and air outlets each having a ventilator and defroster function, resulting in a complex structure and increased costs.

SUMMARY OF THE INVENTION Therefore, the object of this invention is to provide a defroster duct for a new air conditioner that has a defroster function that blows out dry air toward the window side and a ventilator function that blows cool air toward the rear middle room. It is.

In order to achieve this object, in the present invention, a main air outlet and a sub air outlet that blow out one air outlet upward are arranged in parallel in front and back, and the main air outlet This defroster duct is characterized by having a guide section that guides Suita air from above to the rear when the sub-air outlet is opened.

Hereinafter, a first embodiment of the present invention will be explained in detail with reference to FIGS. 3 and 11. Note that the same members as in the conventional example will be described with the same reference numerals.

In FIG. 3, reference numeral 1 denotes 1. On the upper panel surface 1a of the instrument panel C1, a main air outlet 17 near the front window 11 side and a sub air outlet 19 are arranged in parallel behind the air outlet 17. (installed), and two air outlets 17, 19 are arranged along the width direction of the vehicle so that they are arranged side by side in the front and rear. As shown in the figure, the main Suita mouth 17 and the sub Suita mouth 19 of this embodiment are constructed by fixing a defroster grille 21 connected to a duct 3 arranged along the vehicle width direction to the instrument panel 1, and fixing the defroster grille 21 to the instrument panel 1. A partition plate 23 is inserted into an opening provided in the L star grill 21 to divide it into front and rear parts, and the front part is the main Suita exit 17 and the rear part is the sub Suita exit 19. At the time of rJ1 of the sub Suita exit 19, the main Suita exit 17 has an R where the blowing air is guided from above to the rear.
A guide portion 25 is provided that extends to the right 7. Guide 811
25 utilizes the Coanda effect in which, in the rIIFR of Suita Exit 19 of Zabu, when the main air is blown upward, negative pressure is created at the edge of Suita Exit 17 so that the flow is directed to the negative pressure side. In this embodiment, the upper edge of the partition plate 23 is formed in a rounded shape behind the main air outlet 17 . This creates a negative pressure on the Suita port 19 side of the sleeve.

As described above, each of the main and sub air outlets 17 and 19 is connected to the duct 3 arranged along the vehicle width direction inside the instrument panel 1, but inside the duct 3, By extending the partition plate 23 that partitions the air outlet 17.19 into front and rear parts, the main Suita outlet 17
A first induction chamber 29 is in communication with the sub-air outlet 19, and a second induction chamber 31 is in communication with the sub-air outlet 19. 1st. C
There is. An on-off valve 37 and a defroster door 39 are provided in the second induction chamber 31 and the connection path 35. The defroster door 39 is connected to a hand control lever (not shown) provided on the passenger side of the instrument panel 1, and controls switching between introducing and blocking air into the duct by operating the control lever. As shown in Fig. 5, the valve 37 turns on the vacuum actuator 1-tough 0, the solenoid valve 41, the compressor, 0FFL, and operates the cooling unit.
The on-off valve 37 is connected in series with the C power source P through the inactivation switch 43, and the on-off valve 37 is switched to open so that air is supplied to the second induction chamber 31 of the duct 3 with 01=F' of the air conditioner switch 43.

Therefore, when the on-off valve 37 is opened, the air outlet 1 of the heater unit 33 enters both the first induction chamber 29 and the second induction chamber 31 from the connection path 35, and
The air blows upward from 7.19 and functions as a defroster to clear the fog on the front window 11. Furthermore, when the air conditioner switch 43 is turned ON, the on-off valve 37 is switched to close as shown in FIG.
The air blown out from the main Suita mouth 17 is caused to flow rearward by the guide portion 25, functioning as a ventilator that blows cool air backward. As a result, there is no need to use dedicated ducts that have each function. Further, as shown in FIG. 7, the fan switch 45 may be linked instead of the front air conditioner switch so that the treid valve 41 does not operate when the lever 45a is in the Hl position.

8 and 10 show another embodiment of the present invention, in which a chamber 27 for holding a sub-air outlet 19 is installed in parallel behind the main air outlet 17.

Chamber 27 in this embodiment is connected to control box 49 via duct 82. The air intake port 8 of the control box 49 has an air intake port 8 on the inside.
0, a movable member 51 for listening and closing the air intake l'80, etc.
It has a solenoid L that controls the mover 51 in the direction of the arrow, and when the solenoid L moves, it closes the intake port 80. On the other hand, the solenoid L is connected in series with an actuation switch 55 connected to the power source P. As a result, the activation switch 550A
The structure is such that solenoid L operates when the engine is turned on, cutting off air intake into the vehicle interior.

As shown in FIG. 10, the activation switch 55- is connected in series with the air conditioner switch 57 and the outside temperature switch 53, which turns on when the outside temperature is approximately 15° C. or higher. It is also possible to have a circuit configuration that works when both are A.

Therefore, in the case of this embodiment, the air conditioner switch 57 is in the normal state of A, and when the outside temperature reaches 15° C. or higher, the outside air switch 53 is activated (the activation switch 55 is turned on. As a result, the sub air outlet 19 is closed,
The cold air is directed (flows) backward from the main Suita outlet 17. Also, when the outside temperature is below 15°C, the sub outlet 17 is opened and the main and sub outlet 17.1
The Suita wind blows upward from 9 and becomes like 1.

As explained above, according to the present invention, it is possible to achieve both the defroster function of blowing out air upward and the ventilator function of blowing out the air backward, and it is possible to omit the conventional duct having a ventilator function. This is advantageous in terms of workability and cost.

[Brief explanation of the drawing]

1 and 2 are conventional explanatory diagrams according to the present invention, FIGS. 3 to 6 show a first embodiment according to the present invention, and FIG. 3 is an overall cross-sectional view, and FIG. Figure 4 is a cross-sectional view of the main parts, Figures 5 and 6 are explanatory diagrams of operation, Figure 7 is a circuit diagram of a modification of the first embodiment, and Figures 8 to 11 are of the second embodiment. ,
Fig. 8 is an overall schematic diagram, Fig. 9 is a cross-sectional view similar to Fig. 3, Fig. 9 is an overall perspective view of the second embodiment, Fig. 10 is a circuit diagram of the same control box as above, and Fig. 11 indicates a modification of the same as above, and 1 = indicates a circuit diagram. Explanation of main drawing symbols 3...Defroster duct 17...Main air outlet 19...Sub air outlet 2
5...Guide portion patent Applicant Nissan Motor Co., Ltd. Figure 1 Figure 2

Claims (1)

[Claims] A main outlet that blows Suita wind upwards and a sub outlet are installed in parallel in front and back, and the main outlet 1 has a main outlet that blows Suita wind upwards and a sub outlet that blows Suita wind from above to the rear when the sub blower u40 is closed. Defroster door I~ of an air conditioner, characterized in that it is provided with a guide portion for guiding the air conditioner toward.