JP2003039933A - Air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner for a vehicle capable of eliminating any temperature difference of the conditioned air in a vehicle compartment. SOLUTION: In the air conditioner for the vehicle comprising an air- conditioning unit 1 for taking in the outside air or the inside air and cooling or heating the air, and a duct 30 which is continuous to an air outlet 10 of the air-conditioning unit to feed the conditioned air into the vehicle compartment, the duct 30 branches the conditioned air introduced from the outlet 10 and leads the air in two directions, and a partition plate 40 for branching the conditioned air in two directions is provided at a branching part of the duct.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a vehicle air conditioner mounted on a vehicle or the like.

[0002]

2. Description of the Related Art The one shown in FIG. 5 and FIG.
It is an air conditioning unit called a (Heating, Ventilation, and Air-Conditioning) unit. The air conditioning unit 1 includes a casing 2, an outside air introduction port 3, an inside air introduction port 4, a blower fan 5 with a built-in motor, a heater core 6, and an evaporator 7. A blower fan 5 is provided at one end of the casing 2, an outside air introduction port 3 is provided on a side wall of the casing 2 adjacent to the blower fan 5, and upper and lower walls of the casing 2 adjacent to the outside air introduction port 3 are provided. An inside air introduction port 4 is provided. Furthermore, an conditioned air outlet 10 for defrosting and face blowing is provided on the upper end of the other end of the casing 2, and a foot outlet 11 is provided on the bottom. Further, reference numeral 15 is a filter for removing dirt and the like of the outside air when air is taken in from the outside air introduction port 3, and is detachably attached to the outside air introduction port 3. Ducts (not shown) are connected to the conditioned air outlet 10 and the foot outlet 11 so that conditioned air can be sent to a predetermined position (such as a dashboard) in the vehicle. A heater core 6 and an evaporator 7 are provided between the outside and inside air inlets 3 and 4 and the outlets 10 and 11, and the inside air is switched to either the outside air inlet 3 or the inside air inlet 2. An air switching damper 12 and an air mix damper 13 for adjusting the amount of air heated by the heater core 6 are provided. With such a configuration, the air that has flowed in from the outside air or inside air inlets 3 and 4 passes through the evaporator 7 or the heater core 6 and is air-conditioned, and then the respective outlets 10 and 11
After that, it is blown out into the passenger compartment.

[0003]

The conditioned air blown from the conditioned air outlet 10 is guided to the duct 20 as shown in FIG. 6 and blown to the driver's seat, passenger seat, dashboard, etc. in the passenger compartment. To be done. Here, the air that has passed through the heater core 6 is heated, while the air that has not passed through the heater core 6 reaches the air outlet 10 at a low temperature. Heater core 6
The air that has passed through is biased toward the downstream side in the casing 2 as shown in FIG. Therefore, the temperature of the air blown from the outlet 10 becomes high on the downstream side of the casing 2 (on the right side in the figure),
The low-temperature air that has not passed through the heater core 6 is likely to be introduced into the flow passage on the right side (driver's seat side) of the duct 20, and conversely is introduced into the left side (passenger seat side) of the duct 20. Therefore, there is a problem that a large temperature difference occurs between the conditioned air on the driver's seat side and the passenger's seat side.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an air conditioner for a vehicle capable of eliminating the temperature difference of the conditioned air in the passenger compartment.

[0005]

According to a first aspect of the present invention, there is provided an air conditioning unit for taking in outside air or inside air for cooling or heating, and an air-conditioning air continuous to the air outlet of the air conditioning unit. In a vehicle air conditioner having a duct for sending air, the duct guides the conditioned air introduced from the air outlet in two directions, and a branch portion of the duct branches the conditioned air in the two directions. It is characterized in that a partition plate is provided.

According to the present invention, by appropriately setting the angle and shape of the partition plate, it becomes possible to reduce the temperature difference of the conditioned air after branching.

According to a second aspect of the present invention, in the vehicle air conditioner according to the first aspect, the partition plate divides the conditioned air blown from the outlet of the air conditioning unit into two substantially equal amounts of heat. It is characterized by

According to the present invention, the partition plates are installed so that the heat amounts of the air flowing through the flow paths after branching are substantially equal to each other.

According to a third aspect of the present invention, in the vehicle air conditioner according to the first or second aspect, the duct is a substantially straight line for the conditioned air introduced from the air outlet and is directed in opposite directions. The duct is provided with an opening through which conditioned air is introduced from the outlet of the air conditioning unit, the partition plate is provided facing the opening, and the partition with respect to the opening. The projected shape of the partition plate is characterized in that it extends over the opening and faces in an oblique direction with respect to the straight line.

According to the present invention, even if the temperature of the conditioned air reaching the opening is deviated in the longitudinal direction of the duct,
Since the partition plate is provided in an oblique direction with respect to the opening, the warm air that has passed through the heater core and the cold air that has not passed through are mixed and flow into the two flow paths partitioned by the partition plate. Do

According to a fourth aspect of the present invention, in the vehicle air conditioner according to the first or second aspect, the duct is a substantially straight line for the conditioned air introduced from the air outlet and is directed in opposite directions. The duct is provided with an opening through which conditioned air is introduced from the outlet of the air conditioning unit, the partition plate is provided facing the opening, and the partition with respect to the opening. The projected shape of the partition plate is characterized by straddling the opening and being stepwise in the duct width direction.

In the present invention, the partition plate has a stepped shape (at least one step or more), but by appropriately designing the size of each step or surface at this time, it is branched into two flow paths. The heat quantity of the conditioned air can be made substantially equal.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. It should be noted that the same reference numerals are used for the same configurations as the conventional one, and the description thereof will be omitted. FIG. 1 shows a vehicle air conditioner according to the present embodiment.
In the figure, reference numeral 30 is a duct. Duct 30
It is provided along the same direction as the longitudinal direction of the air conditioning unit 1, and its intermediate portion is connected to the conditioned air outlet 10 of the air conditioning unit 1. A rectangular opening 31 is provided in the middle of the duct 30.
And the air outlet 10 of the air conditioning unit 1, the vertical portion 35
Are connected via. The duct 30 is provided with a driver-side air outlet 36 and a passenger-side air outlet 37 at both ends.

A partition plate 40 is provided in the duct 30 facing the opening 31. The partition plate 40 is provided so that the projected shape of the partition plate 31 is along the diagonal line of the opening part 31. This partition plate 40 has an opening 3
The conditioned air introduced into the duct 30 via 1 is branched into the driver seat side and the passenger seat side.

In the vehicle air conditioner of the present embodiment constructed as described above, the conditioned air is distributed to the driver seat side and the passenger seat side as follows. As described above, in the air conditioning unit 1, the warm air that has passed through the heater core 6 is biased toward the downstream side as compared with the cool air that has not passed through the heater core 6. Therefore, at the time of flowing into the opening 31 of the duct 30, the temperature on the driver's seat side (right side in the drawing) is higher than that on the passenger seat side. In the present embodiment, the conditioned air passes through the opening 31 and the duct 3
When flowing into 0, it is branched by the partition plate 40 into a flow path to the driver seat side and a flow path to the passenger seat side. Here, since the partition plate 40 is provided along the diagonal line of the opening 31, as shown in FIG. 2, the warm air A is also supplied to the flow path on the driver seat side and the flow on the passenger seat side. It is also supplied to the road. The same applies to the cold air B. Therefore, the temperature difference between the conditioned air blown to the driver's seat and the passenger's seat is reduced compared to the conventional case and becomes substantially equal.

Next, a second embodiment of the present invention will be described. The same components as those in the first embodiment will be designated by the same reference numerals, and the description thereof will be omitted. FIG. 3 is a perspective view of the vehicle air conditioner according to this example. In the figure, reference numeral 50 is a partition plate provided so as to face the opening 31. The projected shape of the partition plate 50 with respect to the opening 31 is stepwise in the width direction of the duct 30. The partition plate 50 divides the duct 30 into bidirectional flow paths. The shape of the partition plate 50 is determined as follows. What is shown in FIG. 4A is a top view of the opening 31. The opening 31 is divided into a plurality of meshes 31a, and the temperature and air volume are measured in each mesh 31a. Based on this measurement result, the amount of heat of the air passing through each mesh 31a is calculated. Then, the shape of the partition plate 50 is determined so that the sums of the amounts of heat blown to the driver's seat side and the passenger's seat side are equal. In this example, in the case of the shape shown in FIG. 4B, the duct 30 could be partitioned most evenly.

By thus defining the shape of the partition plate 50 along each mesh 31a, the partition plate 50 has at least one step shape. Further, in the top view of FIG. 4 (b), the cross-sectional area of the flow path leading to the driver's seat side on the right side of the drawing has three meshes 31a secured, and the cross-sectional area of the flow path leading to the passenger seat side on the left side. Has two meshes 31a secured. Thus, the pressure loss can be prevented by determining the shape of the partition plate 50 so as not to reduce the flow passage cross-sectional area when the conditioned air flows from the opening to the driver seat side and the passenger seat side.

The division of the mesh is not limited to the above example, and the number of steps of the partition plate 50 is not limited to the above.

[0019]

As described above, in the present invention, by providing the partition plate, the temperature difference of the conditioned air supplied from the duct in two directions can be eliminated.

[Brief description of drawings]

FIG. 1 is a perspective view of a vehicle air conditioner shown as an embodiment of the present invention.

FIG. 2 is an upper sectional view of a duct of the vehicle air conditioner.

FIG. 3 is a perspective view of a vehicle air conditioner shown as another example.

FIG. 4 is a diagram for calculating a partition plate shape of the vehicle air conditioner.

FIG. 5 is a perspective view of a conventional vehicle air conditioner.

FIG. 6 is a side sectional view of the vehicle air conditioner.

[Explanation of symbols]

1 Air conditioning unit 10 Air conditioning air outlet 30 ducts 31 opening 40,50 partition

Claims (4)

[Claims] 1. An air conditioner for a vehicle, comprising: an air conditioning unit for taking in outside air or inside air for cooling or heating; and a duct which is continuous with an air outlet of the air conditioning unit and which sends conditioned air into a vehicle interior. The duct is configured to branch the conditioned air introduced from the air outlet into two directions, and a partition plate for branching the conditioned air into the two directions is provided at a branch portion of the duct. The vehicle air conditioner. 2. The vehicle air conditioner according to claim 1, wherein the partition plate divides the conditioned air blown from the outlet of the air conditioning unit into two substantially equal amounts of heat. Air conditioner. 3. The vehicle air conditioner according to claim 1 or 2, wherein the duct is a flow path that guides the conditioned air introduced from the air outlets in substantially straight lines in mutually opposite directions, The duct is provided with an opening through which conditioned air is introduced from the air outlet of the air conditioning unit, the partition plate is provided facing the opening, the projection shape of the partition plate to the opening, A vehicle air conditioner, which straddles the opening and faces an oblique direction with respect to the straight line. 4. The vehicle air conditioner according to claim 1, wherein the duct is a flow path that guides the conditioned air introduced from the air outlets in substantially straight lines in mutually opposite directions, The duct is provided with an opening through which conditioned air is introduced from the air outlet of the air conditioning unit, the partition plate is provided facing the opening, the projection shape of the partition plate to the opening, The air conditioner for a vehicle, which straddles the opening and has a stepwise shape in the duct width direction.