JPS6232886Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the structure of an air outlet and a switching damper in an air mixer box of an automobile air conditioner.

Conventionally, in automotive air conditioners, vents and
When an air outlet is provided that can blow air in both heat modes, a dedicated damper is required in addition to the damper for switching between vent/heat and defroster modes.

However, in the above-mentioned automotive air conditioners, in order to provide a dedicated damper for the combined vent/heat outlet, the main vent/heat outlet is
A complex linkage mechanism is required to link with the switching damper for heat and defroster modes.
Furthermore, extra space is required to provide the damper.

The present invention was developed in view of the above points, and includes an air mixer box equipped with a heat/defroster and vent outlet, a combined vent/heat outlet, two dampers for switching between these outlets, and the vent/heat outlet. An auxiliary hot air passage that communicates the combined heat outlet and the heat outlet, and an auxiliary cold air passage that communicates the combined vent/heat outlet and the vent outlet, and one of the dampers is connected to the heat outlet. and a damper that switches between the vent and the defroster outlet, and one of the dampers is integrally provided with a switching part that opens and closes the auxiliary hot air passage and the auxiliary cold air passage, so that it also serves as a switching damper for the combined vent and heat outlet. It is an object of the present invention to provide an air conditioner for an automobile with a simple structure that can have two mode switching dampers while having a combination vent/heat outlet.

The present invention will be described below with reference to embodiments shown in the drawings.

In FIG. 1 showing a schematic cross-sectional view of an air conditioner for an automobile, 1 is a blower unit, 2 is an electric motor attached to the blower unit 1, 3 is a blower rotated by the electric motor 2, and 4 is a blower rotated by the blower 3. An inside/outside air switching box that switches between the interior air and the outside air to be drawn in; 5 is an inside air intake port; 6 is an outside air intake port; 7 is a cooler unit through which the air pumped from the blower unit 1 passes; 8 is the pumped air 9 is a heater unit connected to the cooler unit 8; 10 is a heater core that uses cooling water from an automobile engine (not shown) as a heat source to warm the pumped air; 11 is an air mix damper; The amount of air heated in the heater core 10 can be controlled by the opening degree, and the warm air passing through the heater core 10 and the cold air bypassing the heater core 12 are mixed by the air mix damper 11. It is an air mix box.

As shown in FIG. 2, this air mix box 12 has a heat center outlet 16 and a heat side outlet 16a at the bottom, and a combined heat/vent outlet at an intermediate position between the upper and lower sides (at the height of the passenger's knees). It has an outlet 19, and further above there are a defroster outlet 17, a vent center outlet 18, and a vent side outlet 1.
8a, and each of the air outlets 17, 18, 18a is switched by a vent/defroster switching damper 15. Further, the heat outlet 16, 16a, the heat/vent combination outlet 1
9 and defroster outlet 17, vent outlet 1
8 and 18a, a heat, vent, and defroster switching damper 13 as shown in FIG. 3 is provided. Further, as shown in FIG. 3, the combined heat/vent outlet 19 communicates with the heat outlets 16, 16a via an auxiliary hot air passage opening 21, and also communicates with the vent outlets 18, 18a through an auxiliary cold air passage opening. It communicates via 22. In order to switch these passage ports 21 and 22, switching portions 13-a, 13-b and 13-c are provided perpendicular to the main body on the opposite side of the main body with respect to the spindle of the heat/vent/defroster switching damper 13. It is provided with a defroster outlet 2 on the main body side.
0 is set.

Next, the operation of the above configuration will be explained. The outside air or inside air sucked in by the blower unit 1 passes through the cooler unit 7 and the heater unit 9, where it is conditioned and flows into the air mix box 12. Here, in the vent mode, the heat, vent, and defroster switching damper 13 is in the state shown by the solid line in FIG.
The switching damper 13 for heat, vent, and defroster closes the heat outlet ports 16, 16a, and also closes the auxiliary hot air passage port 21 by its switching portions 13-a, 13-b. Close, and open only the auxiliary cold air passage port 22. Therefore,
The conditioned air is discharged from the vent outlets 18, 18a and the combined heat/vent outlet 19. Next, in the defroster mode, the heat, vent, and defroster switching damper 13 is in the same position as in the vent mode, and the vent and defroster switching damper 15 is in the state shown by the dashed line in FIG. The conditioned air is discharged from the defroster outlet 17, and some air is discharged from the outlet 1.
Blows out from 9. In the heat mode, the heat, vent, and defroster switching damper 13 is in the second
The switching part 13-c closes the auxiliary cold air passage opening 22, and the conditioned air is blown out from the heat outlet 16, 16a, and the auxiliary hot air passage opening 22 is in the state shown by the chain line in the figure. It passes through and is discharged from the vent/heat combination outlet 19. A part of the conditioned air is also sent to the vent/defroster switching box 14 through the defroster outlet 20.
Since the damper 15 is at the position indicated by the dashed dot line, the air is discharged from the defroster outlet 17. In this way, the switching part 13- of the vent/heat combination outlet 19 is connected to the switching damper 13 for heat, vent, and defroster.
The simple structure of providing a, 13-b and 13-c has the feature of enabling combined vent and heat blowing.

Of course, it goes without saying that the present invention can be applied to an air conditioner that does not have the cooler core 8.

As described above, in the present invention, the air mixing box that mixes warm air and cold air of an automobile air conditioner has respective air outlets for heat, defroster, and vent, an air outlet for combined use of vent and heat, and each air outlet. One of the dampers is used to switch between the heat, defroster and vent outlets, and the other is used to switch between the vent and heat outlet, so two dampers can be used to switch modes. It has the excellent effect of being able to perform both venting and heat blowing with a simple structure consisting of just one damper.

[Brief explanation of the drawing]

Fig. 1 is a schematic cross-sectional view of an automobile air conditioner to which the present invention is applied, Fig. 2 is a side sectional view of an air mix box which is an embodiment of the present invention, and Fig. 3 is a schematic cross-sectional view of an air mix box according to the present invention. FIG. 2 is an exploded detailed perspective view of a defroster and a vent switching damper, and a combined heat/vent outlet. 10... Heater core, 11... Air mix damper, 12... Air mix box, 13... Heat, defroster and vent switching damper, 15...
...Defroster and vent switching damper, 16, 16
a...Heat outlet, 17...Defroster outlet, 18, 18a...Vent outlet, 19...Heat/vent combination outlet.

Claims (1)

[Scope of utility model registration request] In an automotive air conditioner that controls the temperature of the blown air by adjusting the mixing ratio of warm air passing through a heater core and cold air bypassing the heater core using an air mix damper, an air mix box that mixes the warm air and cold air includes: Each air outlet for heat, defroster, and vent, a combined vent/heat air outlet, two dampers capable of switching each of the air outlets, and the vent/heat combined air outlet and the heat air outlet are communicated with each other. An auxiliary hot air passage and an auxiliary cold air passage that communicates the vent/heat combination outlet and the vent outlet are provided, and one of the dampers is used for switching between the heat outlet and the vent and defroster outlet, An air conditioner for an automobile, characterized in that one of the dampers is integrally provided with a switching part for opening and closing the auxiliary hot air passage and the auxiliary cold air passage, and is used for switching a combined vent/heat outlet.