JP3470510B2 - Automotive air conditioners - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner capable of adjusting the temperature control air flow rate flowing through a center vent or a side vent.

[0002]

2. Description of the Related Art Conventionally, as a device of this type, an actual device has been used.
The ones disclosed in Japanese Laid-Open Patent Publication No. 0-152515 and Japanese Utility Model Laid-Open No. 63-69611 are known.

[0003]

In the conventional air conditioner for an automobile as described above, a plurality of air distribution doors for distributing air to, for example, a foot duct, a differential duct, and a center vent duct are provided, and various air distribution doors are provided. The air volume of the foot duct, the differential duct, and the center vent duct is changed by controlling according to the air distribution mode (vent mode, foot mode, etc.). On the other hand, the side vent duct is configured to always supply temperature-controlled air regardless of the position of the air distribution door. Since the position of the air distribution door is set for each mode, when changing the distribution of the air volume, it is necessary to make a large-scale change such as changing the cross-sectional area of each duct. The allocation could not be adjusted.

An object of the present invention is to provide an air conditioner for a vehicle which can easily adjust the air volume of the temperature-controlled air flowing into the side vent duct and the center vent duct.

[0005]

An embodiment of the invention will be described with reference to FIGS. (1) Explaining in association with FIG. 2, the invention of claim 1 distributes the temperature-controlled air to the side vent duct outlet and the side-vent duct 21 to distribute the temperature-controlled air to the center vent outlet. An automotive air conditioner including a center vent duct 20 and a vent door 30 movable between a first position A that shields an opening 20a of the center vent duct 20 and a second position B that is retracted from the opening 20a. The opening 21a of the side vent duct 21 is provided adjacent to the opening 20a of the center vent duct 20, and the vent door 30 is provided between the first position A and the second position B about the base end 30a of the vent door 30. When the vent door 30 is rotatable and is located at a predetermined position J between the first position A and the second position B, the side vent duct is positioned substantially opposite to the tip of the vent door. To achieve the above object by providing a convex portion 31 which deflects the temperature control air to preparative 21 to the center vent duct 20 direction. (2) Explaining in association with FIG. 3, the invention of claim 2 is the air conditioner for an automobile according to claim 1,
The vent door 50 is formed with an opening 50C facing the opening of the side vent duct 21 when the vent door 50 is in the first position A. (3) The invention according to claim 3 is the air conditioner for an automobile according to claim 1, wherein a part of the opening of the side vent duct 21 is shielded when the vent door 50 is at the first position A. is there. (4) Describing in association with FIG. 2, the invention of claim 4 is the air conditioner for a vehicle according to any one of claims 1 to 3, wherein a foot duct for distributing temperature-controlled air to a foot inside the vehicle compartment. 24 and a diff that guides the temperature-controlled air to the diff duct 23 that distributes the temperature-controlled air to the inner surface of the window shield glass.
The foot duct 22 is provided, and the vent door 30 blocks the opening 22a of the differential foot duct 22 at the second position B.

(1) In the invention of claim 1, the vent door 3 is provided.
When 0 is at the predetermined position J, the vent door 30 and the convex portion 3
The temperature controlled air passing between the center vent duct 2 and
It is deflected in the 0 direction, and a part of it is deflected to the center vent duct 2.
It flows into 0. The degree of this deflection is changed by changing the setting (shape and size) of the convex portion 31. (2) In the invention of claim 2, when the vent door 50 is in the first position A, the temperature-controlled air that flows into the side vent duct 21 through the opening portion 50c that is an adjusting portion provided at the tip portion of the vent door 50. Flow rate is limited. Then, the flow rate is changed by changing the area of the opening 50c. (3) In the invention of claim 3, when the vent door 50 is in the first position A, a part of the opening of the side vent duct 21 is shielded by the vent door 50, and the temperature control air flowing into the side vent duct 21 flows. Flow rate is limited. (4) In the invention of claim 4, the vent door 30 can selectively shield either the opening 20a of the center vent duct 20 or the opening 22a of the differential foot door 22.

[0007]

According to the present invention, by changing the setting of the convex portion, it is possible to easily adjust the air volume of the temperature control air flowing into the center vent duct and the side vent duct when the vent door is at the predetermined position. You can

Incidentally, in the section of the means for solving the above-mentioned problems for explaining the constitution of the present invention, the drawings of the embodiments of the invention are used for the purpose of making the present invention easy to understand. However, the present invention is not limited to the embodiment.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION First, an example of the overall configuration of an automobile air conditioner will be described with reference to the reference example shown in FIG. Reference numerals 11 and 12 denote an outside air intake port and an inside air intake port provided on the upstream side of the air conditioner 1, and the intake door 13 adjusts the ratio of the intake air to the outside air. The air sucked from both the suction ports 11 and 12 is blown to the downstream side (left side in the drawing) of the air conditioner 1 by the blower fan 14, and heat is exchanged by the evaporator 15 to become cold air.

On the downstream side of the evaporator 15, the flow path of cold air is divided into a flow path 17 passing through the heater core 16 and a flow path 18 bypassing the heater core, and merges again on the downstream side of the heater core 16. The cold air passing through the flow path 17 is the heater core 1
Heat exchange is performed by 6 to form warm air, and the warm air and the cool air that has passed through the flow path 18 join together to form temperature-controlled air having a predetermined temperature. An air mix door 19 is provided at a branch point between the flow paths 17 and 18, and the air mix door 19 is provided.
The ratio of the air passing through the flow paths 17 and 18 is adjusted by changing the position of.

Reference numeral 20 is a center vent duct for introducing temperature-controlled air to a center vent outlet (not shown) provided near the center of the instrument panel, and 21 is a side vent provided at both left and right ends of the instrument panel. It is a side vent duct that guides temperature-controlled air to a duct outlet (not shown). Reference numeral 22 denotes a differential foot duct, which is branched downstream thereof into a differential duct 23 that guides the temperature-controlled air to the inner surface of the window shield glass and a foot duct 24 that guides the temperature-controlled air to the feet inside the vehicle compartment.

Reference numeral 25 denotes a vent door which is rotatable about a shaft 25a as a rotary shaft, and is controlled so as to be positioned between a position A and a position B shown in the figure. The vent door 25 is the door portion 2
5b and an opening 25c formed on the tip side. When the vent door 25 is in the position A, the door portion 2
5b shields the opening 20a of the center vent duct 20, and the opening 25c faces the opening 21a of the side vent door 21. On the other hand, when the vent door 25 is at the position B, the door portion 25b is not connected to the differential foot duct 22.
The opening 22a is blocked. Reference numeral 26 is a differential foot door that is rotatable about a shaft 26a as a rotation shaft, and is controlled to a position between positions C and D shown in the drawing. The opening 2 of the differential duct 23 when the differential foot door 26 is in the position C.
3a is shielded, while the foot duct 24 is shielded at the position D. The temperature-controlled air adjusted to a predetermined temperature by the mix door 19 is blown into the passenger compartment (not shown) after being distributed to the ducts 20 to 24 by the doors 25 and 26.

Next, an embodiment of an automobile air conditioner according to the present invention will be described with reference to FIGS. Figure 2
2 (a) to 2 (c) show a vent mode, a bi-level mode, and a differential mode, and FIG. 2 (d) is shown in FIG. 2 (c).
FIG. 3 is a sectional view taken along line HH of FIG. Reference numeral 30 denotes a vent door that is rotatable with respect to the shaft 30a, and shields the opening 20a of the center vent duct 20 at the position A and the opening 22a of the differential foot duct 22 at the position B. The positions of the vent door 30 and the differential foot door 26 in each mode are the same as those of the vent door 25 and the differential foot door 26 of FIG. 1 shown as a reference example. 31 is a convex portion,
It is provided at a position substantially facing the tip of the vent door 30 in the bilevel mode. The side vent duct 21 is provided adjacent to the center vent duct 20.

The temperature-controlled air flowing around the convex portion 31 is deflected toward the center vent duct 20 (leftward in the drawing). Therefore, as shown in FIG. 2A, the temperature-controlled air E2 distributed to the side vent duct 21 flows into the side vent duct 21 so as to go around the convex portion 31. As a result, a part of the temperature-controlled air E2 flows into the center vent duct 20, and the air volume of the temperature-controlled air E2 distributed to the side vent duct 21 is smaller than that in the case where the vent door 25 is located at the position B in FIG. To do. Deflection of the temperature-controlled air by the convex portion 31 similarly occurs in modes other than the vent mode. Especially, in the bi-level mode shown in FIG.
Due to the influence of the bent vent door 30, the temperature-controlled air tends to be deflected toward the center vent duct 20.

As shown in the sectional view of FIG. 2D, the air volume of the temperature-controlled air flowing into the side vent duct 21 changes depending on the size of the sectional area S of the convex portion 31 with respect to the flow of the temperature-controlled air. Further, the above-mentioned air volume also changes depending on the shape of the convex portion 31 and the distance from the opening 21a. That is, by adjusting the cross-sectional area and shape of the convex portion 31 and the distance from the opening 21a, the air volume of the temperature-controlled air distributed to the center vent duct 20 and the side vent duct 21 can be adjusted.

Although the vent door 30 shields only the opening 20a of the center vent duct 20 at the position A, the vent door 30 shields a part of the side vent duct 21 or a tip end portion as shown in FIG. Opening 50
A vent door 50 having c may be used.

In the correspondence between the above-described embodiment of the invention and the elements in the claims, position A constitutes a first position and position B constitutes a second position.

[Brief description of drawings]

FIG. 1 is a diagram showing a reference example of an automobile air conditioner.

FIG. 2 is a diagram showing an embodiment of an automobile air conditioner according to the present invention, in which (a) shows a vent mode, (b) shows a bilevel mode, and (c) shows a differential mode.

FIG. 3 shows the vent door 30 in FIG.
The figure when replaced by 0.

[Explanation of symbols]

1 Air conditioner 20 Center vent duct 21 Side vent duct 22 differential foot duct 23 differential duct 24 foot duct 25,30,50 vent door 25a, 30a, 50a axes 25b door section 25c, 50c opening 26 differential foot door 31 convex

Front page continuation (56) References Open 62-56410 (JP, U) Open 61-141111 (JP, U) Open 64-11815 (JP, U) Open 62-62511 (JP , U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) B60H 1/00-1/34

Claims (4)

(57) [Claims] 1. A side vent duct that distributes temperature-controlled air to a side vent duct outlet, a center vent duct that distributes temperature-controlled air to a center vent outlet, and a first vent that shields the opening of the center vent duct. In a vehicle air conditioner including a vent door movable between a position 1 and a second position retracted from the opening, the opening of the side vent duct is provided adjacent to the opening of the center vent duct. The vent door is rotatable about the base end thereof between the first position and the second position, and the vent door is set to the first position.
When in a predetermined position between the second position and the vent
The side vent duct is provided at a position substantially facing the front end of the door.
Deflection temperature-controlled air toward the center vent duct
An air conditioner for an automobile, characterized in that a convex portion is provided. 2. The vehicle air conditioner according to claim 1, wherein the vent door is in the first position when the vent door is in the first position.
Open the opening facing the opening of the vent duct
An air conditioner for automobiles, which is formed on the door . 3. The vehicle air conditioner according to claim 1, wherein the vent door covers a part of an opening of the side vent duct when the vent door is in the first position . Air conditioner. 4. The vehicle air conditioner according to any one of claims 1 to 3, wherein a foot duct for distributing the temperature-controlled air to the feet inside the passenger compartment and a differential duct for distributing the temperature-controlled air to the inner surface of the window shield glass. An air conditioner for an automobile, comprising: a differential foot duct for guiding temperature-controlled air to the vent door, and the vent door blocking the opening of the differential foot duct at the second position.