JPS5816408Y2 - Automotive air conditioner - Google Patents

Description

[Detailed explanation of the idea] TECHNICAL FIELD The present invention relates to an improvement of an air conditioner for an automobile.

The structure of a general air conditioner for automobiles is explained with reference to Fig. 1.2. Reference numeral 1 denotes an air intake box having an inside and an outside air intake 2.3, and an air intake fan 4 disposed inside. Air is introduced from the outside air intake port 3 or the inside air intake port 2 by the introduction fan 4, and the introduced air is made to pass through the evaporator 5.

A heater core 6 and a bypass passage 7 that bypasses the heater core 6 are provided downstream of the evaporator 5. During cooling, the evaporator 5 is operated, the introduced air is cooled, and the cold air is controlled by the air mix door 8. The evaporator 5 is allowed to pass only through the bypass passage 7 and is blown out from the ventilator outlet 10 from the chest area of the occupant toward the head.
At the same time, the heater core 6 is activated, and the air that has passed through the evaporator 5 is warmed by passing through the heater core 6 by controlling the opening of the air mink store 8, while a part of the air is circulated through the bypass passage 7 to create an air mix. The warm air and the air from the bypass passage 7 are mixed in the chamber 9 to adjust the temperature, and the temperature-adjusted warm air is blown out from the room air outlet 11 near the passenger's feet or the defroster air outlet 12. Make the air blow out closer to the windshield surface.

Also, when dehumidifying and adjusting the temperature in the vehicle interior, the evaporator 5 and heater core 6 are operated, and the cold air from the evaporator 5 is introduced into the heater core 6 to reheat it, while a part of it is circulated through the bypass passage 7 to combine with these hot air. The temperature is adjusted by mixing the air with cold air in the air mix chamber 9, and the temperature-adjusted air is blown out from the ventilator outlet 10, the ventilator outlet 10, the room outlet 11, the defroster outlet 12, etc.

In the figure, 13 is an intake door for switching between inside and outside air, 14 is a vent door, 15 is a room door, and 16 is a defroster door.

Incidentally, such an air conditioner for an automobile is limited in size due to its mounting on the vehicle, and the actual situation is that the volume of the air mix chamber 9 cannot be made sufficiently large.

This insufficient volume of the air mix chamber 9 greatly affects the efficiency of controlling the air 9 temperature within the air mix chamber 9, making it difficult to make the subcolor air temperature of the room λ uniform.

Therefore, from the viewpoint that if the temperature distribution of head cold and foot heat can be obtained, the cabin environment will not deteriorate so much, the first
, 2 As shown in the figure, the heater core 6 is disposed diagonally horizontally, and the air that has passed through the evaporator 5 during heating is warmed by the heater core 6 and directed downward (a part of the air passes through the bypass passage 7 and flows into the air mix chamber 9 ) and is blown out from the room outlet 11 formed at the lower side of the air mix chamber 9. Also, during dehumidification and temperature adjustment, the heater core 6 is blown out from the room outlet 11 under the control of the air mix door 8. The temperature-controlled air, which is a mixture of the warm air that has passed through the bypass passage 7 and the cold air that has passed through the bypass passage 7, is blown out.
0, air whose temperature is hardly controlled is blown out through a bypass passage 7.

However, when the heater core 6 is disposed diagonally horizontally in this way, the dimension t from the rear end of the evaporator 5 to the rearmost end of the heater core 6 becomes a dog, which narrows the effective volume of the beneficial air minx chamber 9. As a result, a comfortable indoor temperature atmosphere cannot be obtained during dehumidification and temperature control.

Also, normally, the outside air intake port 3 of the air intake box 1
is formed upward, and this outside air intake port 3 is directly communicated and connected to a cowl box 20 at the front of the vehicle body (formed in a box-shaped cross section by a cowl top panel and a dash amplifier panel, forming an outside air intake section). Since the air intake box 1 is designed to take in outside air, the height H of the air intake box 1 becomes too large, and the length space in front of the passenger seat where the air intake box 1 is placed is narrowed, reducing comfort. It also causes deterioration.

In view of such conventional drawbacks, the present invention expands the volume of the air mix chamber as much as possible within a limited space by appropriately setting the layout of the heater core, and controls the air temperature within the air mix chamber. This is done sufficiently to blow out air with a uniform temperature distribution into the vehicle interior, thereby further improving the air conditioning effect.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, in which the same parts as those of the conventional structure are denoted by the same reference numerals.

That is, in the present invention, as illustrated in FIGS. 3 and 4,
Air intake box 1 with built-in air introduction fan 4
An evaporator 5 and a heater core 6 are vertically arranged in series in the streamline direction A-F of the introduced air in the wake, and a bypass passage 7 is provided on the side of the heater core.

Further, the heater core 6 is moved in the streamline direction A- of the introduced air.
The air mix chamber 9 is arranged at an appropriate angle with respect to F so that the air that has passed through the heater core 6 flows toward the bypass passage γ side, and an air mix chamber 9 is provided downstream of the heater core 6 and the bypass passage 7. is formed.

In this way, the heater core 6 is arranged vertically in series with the evaporator 5 in the streamline direction A-F of the introduced air, and the heater core 6 is used to direct the air passing through the heater core 6 in the streamline direction A-F of the introduced air. By arranging the heater core 6 at an angle in the direction in which it flows toward the bypass passage 7 side, the dimension t' from the rear end of the evaporator 5 to the rearmost end of the heater core 6 can be reduced, and as a result, the heater core 6 can be placed close to the evaporator 5 side. This allows the volume of the air mix chamber 9 to be expanded within a limited space.
The air flowing in from the bypass passage 7 can actively interfere with the air passing through the heater core 6 to promote stirring and mixing.

Furthermore, in this embodiment, the air mix door 8 is connected to the heater core 6.
The first air mix door 8a is placed on the front side of the heater core 6 and controls the amount of ventilation on the side of the heater core 6, and the second air mix door 8b controls the amount of air in the bypass passage 7. The arrangement space is narrowed and the heater core 6 is brought closer to the evaporator 5 to further expand the volume of the air mix chamber 9.

Therefore, by expanding the volume of the air mix chamber 9 as described above, the heater core 6 is expanded during heating or temperature control.
The hot air that has passed through the bypass passage 7 and the cold air that has passed through the bypass passage 7 are sufficiently stirred and mixed, and air with a uniform temperature distribution can be blown out from each outlet 10° 11.12. In particular, when controlling the temperature, unlike the conventional stratified temperature control that cools the head and heats the feet, it has the effect of creating a comfortable temperature atmosphere throughout the vehicle interior.

In addition, since the temperature of the blown air in the air mix chamber 9 can be sufficiently controlled, the defroster outlet 12 is placed in the upper part of the air mix chamber 9 as shown in FIG. 4, which is advantageous for the duct layout. Furthermore, it is possible to form the bottom integrally with the ventilator outlet 10, which has the advantage of increasing the degree of freedom in designing the air mix chamber 9.

Here, in this embodiment, the outside air intake port 3 of the air intake box 1 described above is shaped horizontally, and this outside air intake port 3 is placed in the interior space of the dash side 21 that communicates with the cowl box 20 of the vehicle body. A communication connection is made so that outside air is taken in from the cowl top grille 20 through the inside of the dash side 21.

By forming the outside air intake port 3 horizontally in this way, the height H of the air intake box 1 can be lowered, and the air intake box 1 can be placed higher to reduce the length in front of the passenger seat. It has the advantage of being able to expand the pace.

In this example, the inside air intake 2 is formed on the lower slope formed following the outside air intake 3, but it may be opened on the upper wall of the outside air intake 3.
is also placed at the bottom of the box, but it may be placed at the bottom of the box, and by changing the arrangement of the inside air intake 2 and the air introduction fan 4, the height H of the air intake box 1 will be increased as in the conventional case. Never.

As described above, according to the present invention, the heater core is arranged vertically, and the air mix door is divided into the first air mix door that controls the air flow on the heater core side and the second air mix door that controls the air flow on the bypass passage side. This allows the heater core to be placed as close as possible to the evaporator side, increasing the volume of the air mix chamber as much as possible within a limited space, and also directing the heater air in the streamline direction of the introduced air. On the other hand, the air passing through the heater core is inclined in the direction in which it flows toward the bypass passage, and the air passing through the heater core and the air passing through the bypass passage actively interfere with each other to promote agitation and mixing. In addition to this, the temperature of the air in the air mix chamber can be sufficiently adjusted to blow air with a uniform temperature distribution into the vehicle interior, and the interior of the vehicle can be kept in a comfortable atmosphere at all times. It has excellent effects.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the structure of a general air conditioner for automobiles, Fig. 2 is a perspective view of the same, Fig. 3 is a sectional view showing the structure of the device of the present invention, and Fig. 4 is a perspective view of the same. be. 1...Air intake box, 2...
・Inside air intake, 3...Outside air intake, 4...
... Air introduction fan, 5 ... Evaporator, 6
... Heater core, 7 ... Bypass passage, 8 ... Air mink store, 8a ...
1st air mix door, 8b...2nd air mink store, 9...air mix chamber.

Claims (2)

[Scope of utility model registration request] (1) In the wake of an air intake box which has internal and external air intakes and has a built-in air introduction fan, a heater core is arranged vertically in series in the streamline direction of the introduced air, and the heater core is placed on the side of the heater core. A bypass passage is formed in the evaporator core, and the heater core is arranged at an angle with respect to the flow line direction of the introduced air so that the air passing through the heater core flows toward the bypass passage. The air mix door that distributes between the heater core side and the bypass passage side is divided into a first air mix door that controls the amount of ventilation on the heater core side, and a second air mix door that controls the amount of ventilation on the bypass passage side, and further divides the air mix door into An air conditioner for an automobile, characterized in that an air mix chamber is formed in the wake of the air conditioner. (2) An air conditioner for an automobile according to claim 1, wherein the outside air intake of the air intake box is formed laterally and communicates with and is connected to the interior space of the dash side that communicates with the cowl box of the vehicle body. .