JPH05124426A - Air-conditioning device for vehicle - Google Patents

Abstract

PURPOSE:To prevent steaming up of a window glass and to perform rapid heating of the interior of a car room by partitioning passages, running to first and second discharge ports, from each other by means of partitioning plates and discharging air, air-conditioned by means of the open air, to the window glass and air, air-conditioned by internal air, to feet. CONSTITUTION:Partitioning plates K1-K7 are disposed on the central line of alignment of a blower fan motor 17, an evaporator 19, and a heater core 21. A passage through which air sucked through an open air suction port 9 is guided to a first discharge port (a defroster discharge port) 25 and a passage through which air flowing through an internal air suction port 11 is guided to a second discharge port (a foot discharge port) 29 are partitioned from each other by means of the partitioning plates K1-K7. A differential door 31 is openably located between the partitioning plates K6 and K7 and when the differential door 31 is rotated to a position Pb, the two passages are brought into a completely closed state. This constitution causes proper removal of steaming up of a window glass by means of air discharged through the first discharge port 25 and rapid heating of the interior of a car room by means of air discharged through the second discharge port 29.

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, and more particularly to a vehicle air conditioner for heating the interior of a vehicle and removing fog on a window glass.

[0002]

2. Description of the Related Art In recent years, various in-vehicle air conditioners have been developed. FIG. 5 shows a conventional vehicle air conditioner described in Service Circular No. 588, page E-31, issued by Nissan Motor Co., Ltd. on September 1987.

The vehicle air conditioner 101 shown in FIG.
Is composed of an intake unit 103, a cooling unit 105, and a heater unit 107. By switching the intake door 109, the outside air, which is the air outside the vehicle compartment, or the inside air, which is the air inside the vehicle compartment, is sucked from the outside air suction port 111 and the inside air suction port 113, respectively. The blower fan motor 115 blows the outside air sucked through the outside air suction port 111 or the inside air sucked through the inside air suction port 113 to the evaporator 117.
The air cooled by the evaporator 117 is introduced into the heater unit 107. An air mix door 121 is arranged on the front surface of the heater core 119 in the heater unit 107, and the amount of air passing through the heater core 119 is adjusted according to the opening degree of the air mix door 121.

For example, in the defroster mode, the differential door 123 is opened and the air is blown from the outlet 125 to the windshield or the like. In the vent mode, the vent door 127 is opened and the air is blown from the air outlet 129 to the driver's chest. Further, in the foot mode, the foot door 131 is opened and the air is blown from the outlet 133 to the feet of the driver.

[0005]

By the way, in winter, especially in cold regions, it is necessary to warm up the engine and heat the interior of the vehicle at the time of starting the engine, and also to remove fogging on the windshield, side windows, and the like. .. This fogging is caused by water vapor in the passenger compartment adhering to the cooled windshield, side windows and the like. Therefore, the outside air introduction mode is set, the outside air inlet 111 is opened, and the inside of the vehicle is heated while the outside air with low humidity is introduced. Therefore, since cold outside air is always sucked through the outside air intake port 111, it takes time to heat the passenger compartment.
Therefore, there has been a demand for a vehicle air conditioner that can quickly heat the interior of the vehicle while appropriately removing fogging on the windshield, side windows, and the like.

The present invention has been made in view of the above problems, and provides a vehicle air conditioner capable of quickly heating the interior of a vehicle while appropriately removing fog on the windshield, side windows, and the like. With the goal.

[0007]

In order to achieve the above object, the present invention provides an outside air inlet for introducing outside air, an inside air inlet for introducing inside air, and an air introduced from the outside air inlet and the inside air inlet. An air conditioner for air conditioning, a first outlet for blowing air to the windshield, a second outlet for blowing air from at least the foot outlet into the passenger compartment, and an air introduced from the outside air inlet. Through the air conditioning unit to the first
And a partition plate that forms a passage that leads to the second outlet through the air conditioning unit and a passage that leads to the outlet of the inside air, and a partition plate that is openable and closable. And an opening / closing means capable of guiding at least the air introduced from the outside air inlet to the second outlet.

[0008]

According to the present invention, a partition plate for partitioning the passage leading from the outside air inlet to the first outlet and the passage leading from the inside air inlet to the second outlet, and the partition plate being openably and closably provided. When the opening / closing means is in the closed state, the air introduced from the outside air intake port is guided to the first outlet through the air conditioning unit and introduced from the inside air intake port. Air is guided from the second outlet to at least the foot outlet through the air conditioning unit. Therefore, the air conditioned by the outside air is blown to the window glass,
Fogging of the windshield can be properly removed.
Further, since the air conditioned by the inside air is blown into the vehicle interior, the vehicle interior can be quickly heated.

Further, when the opening / closing means is in the open state, the air introduced from the outside air suction port can be guided to the second outlet port via the air conditioning unit. Therefore, fresh outside air can be introduced into the vehicle compartment through the second outlet.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing a vehicle air conditioner according to the present invention, and FIG. 2 is a cross-sectional view of a main part when viewed from an arrow A of FIG. First, the configuration will be described with reference to FIGS.

The vehicle air conditioner 1 includes a blower unit 3 and
It is composed of a cooling unit 5 and a heater unit 7. An outside air intake port 9 and an inside air intake port 11 are opened in the blower unit 3. An outside air switching door 13 is arranged at the outside air intake port 9, and an inside air switching door 15 is arranged at the inside air intake port 11. The outside air switching door 13 can rotate to positions Pa, Pb, Pc.
When the outside air switching door 13 is rotated to the position Pa, the air sucked through the outside air suction port 9 is blown out only from the defroster blow outlet described later. When the outside air switching door 13 is rotated to the position Pb, the outside air intake port 9 is closed. When the outside air switching door 13 is rotated to the position Pc, outside air is sucked in through the outside air inlet 9, and air is blown out not only from the defroster outlet but also from other outlets according to the mode set at this time. To be done.

The inside air switching door 15 has positions Pa and P.
It can rotate to b. Inside air switching door 15
When is rotated to the position Pa, the air in the vehicle compartment is sucked. Further, when the inside air switching door 15 is rotated to the position Pb, the inside air inlet 11 is closed.

The blower fan motor 17 introduces the air sucked from the outside air suction port 9 or the inside air suction port 11 into the cooling unit 5. An evaporator 19 is arranged in the cooling unit 5 and cools the air blown by the blower fan motor 17. This evaporator 19
The air cooled by is supplied to the heater unit 7. The heater core 21 is arranged in the heater unit 7,
On the upstream side of the heater core 21, an air mix door 23a,
23b is arranged. This air mix door 23
The a and 23b can rotate to the positions Pa and Pb, and the amount of air passing through the heater core 21 is adjusted by adjusting the opening of the air mix doors 23a and 23b.

The air mix door 23a will be specifically described. As shown in FIG. 2, the heater core 21 is arranged below the heater unit 7. When the air mix door 23a is rotated to the position Pa, All the air passes through the heater core 21. Further, when the air mix door 23a is rotated to the position Pb, all the air does not pass through the inside of the heater core 21 and all the air flows into the heater core 2.
Pass above 1. Therefore, the air mix door 23a
When is rotated between positions Pa and Pb, the amount of air passing through the heater core 21 is adjusted according to the rotating position of the air mix door 23a, that is, the opening degree of the air mix door 23a. At this time, the air passing through the heater core 21 is heated, that is, warmed. In addition, the heater core 21 in the heater unit 7 and the evaporator 19 in the cooling unit 5 constitute an air conditioning unit, and the air sucked from the outside air intake port 9 or the inside air intake port 11 is air-conditioned.

The heater unit 7 includes a defroster outlet 25 for the defroster, a vent outlet 27 for the vent,
A foot outlet 29 for the foot is opened. The defroster outlet 25 is a first outlet that blows air to the windshield or the like, the vent outlet 27 is an outlet that blows air to the driver's chest, and the foot outlet 29 is It is a second outlet that blows air to the driver's feet. Defroster outlet 25 for defroster, vent outlet 27 for vent, foot outlet 29 for foot
A differential door 31 for defroster, a vent door 33 for vent, and a foot door 35 for foot are arranged corresponding to the above.

Further, the controller 37 controls the rotation of the outside air switching door 13, the inside air switching door 15, the air mix doors 23a and 23b, the differential door 31, the vent door 33, and the foot door 35 according to the setting mode.

The blower fan motor 17, the evaporator 19, and the heater core 21 described above are arranged in a line in the direction of air flow, and a plurality of partition plates K1, K2, ..., K7 are arranged substantially on the center line of this arrangement. It is set up. The partition plates K1, K2, ..., K7 are partitions for forming a passage leading to the defroster outlet 25 which is the first outlet and a passage leading to the foot outlet 29 which is the second outlet. It is a plate. That is, a plurality of partition plates K1, K2
..., a passage for guiding the air sucked from the outside air suction port 9 by K7 to the defroster outlet 25 via the air conditioner, and the air sucked from the inside air inlet 11 to the foot outlet 29 via the air conditioner. A passage for guiding is formed.
Further, the rotating shaft 3 of the differential door 31 is provided between the partition plates K6 and K7.
When the 1a is arranged and the differential door 31 is rotated to the position Pb, the partition plates K6 and K7 and the differential door 31 are formed in a linear shape.

Next, the operation will be described with reference to FIGS.

First, the operation in the vent mode will be described. In the vent mode, neither in the differential foot mode nor in the differential mode. Therefore, the process proceeds to step S5 through steps S1 and S3, the differential door 31 is rotated to the position Pa, and the defroster outlet 25 is closed. Then step S7
Proceed to and determine if it is in vent mode. When it is determined in step S7 that the vent mode is set, the process proceeds to step S11, the vent door 33 is rotated to the position Pa to open the vent outlet 27, and the foot door 35 is opened.
Is rotated to the position Pb to close the foot outlet 29. Succeedingly, in a step S17, it is determined whether or not the mode of the suction port is the outside air introduction mode.

In the vent mode and the outside air introduction mode, the routine proceeds from step S17 to step S19 to rotate the outside air switching door 13 to the position Pc and rotate the inside air switching door 15 to the position Pb. .. Therefore, the inside air intake port 11 is closed and the outside air is taken in only through the outside air intake port 9. The sucked outside air is introduced into the cooling unit 5 and the heater unit 7 by the blower fan motor 17 and is air-conditioned. As described above, the differential door 31 and the vent door 33 rotate to the position Pa, and the foot door 35 moves to the position P.
Since the air outlets 25 and 29 are closed and the air outlet 27 is opened, the air conditioned by the outside air is blown from the air outlet 27 to the driver's chest.

Next, in the vent mode and the inside air introduction mode, the routine proceeds from step S17 to step S21, the outside air switching door 13 is rotated to the position Pb, and the inside air switching door 15 is rotated to the position Pa. To do. Therefore, the outside air suction port 9 is closed, and the inside air is sucked only through the inside air suction port 11. The sucked air is introduced into the cooling unit 5 and the heater unit 7 by the blower fan motor 17 and is air-conditioned. At this time, the differential door 31 and the vent door 33 are rotated to the position Pa, the foot door 35 is rotated to the position Pb, the outlets 25 and 29 are closed, and the outlet 2
Since 7 is open, the air conditioned by the inside air is blown from the outlet 27 to the driver's chest.

Next, the operation in the bilevel mode will be described. If it is the bi-level mode, it is neither the differential foot mode, the differential mode, nor the vent mode. Therefore, the steps S1, 3, 5, and 7 are followed by the step S9.
Go to. When it is determined in step S9 that the mode is the bilevel mode, the process proceeds to step S13. Step S1
3, the vent door 33 is rotated to the position Pa to open the vent outlet 27, and the foot door 35 is moved to the position Pa.
To open the foot outlet 29. Succeedingly, in a step S17, it is determined whether or not the mode of the suction port is the outside air introduction mode.

Here, in the case of the bilevel mode and the outside air introduction mode, steps S17 to S1.
9, the outside air switching door 13 is rotated to the position Pc, and the inside air switching door 15 is rotated to the position Pb. Therefore, the inside air intake port 11 is closed and the outside air is taken in only through the outside air intake port 9. The sucked outside air is blower fan motor 17
Is introduced into the cooling unit 5 and the heater unit 7 and air-conditioned. As described above, since the differential door 31, the vent door 33, and the foot door 35 are rotated to the position Pa, the air outlet 25 is closed, and the air outlets 27 and 29 are open, the air conditioned by the outside air is blown. Exit 27
Is blown to the driver's chest and is blown from the outlet 29 to the driver's feet.

Next, in the bilevel mode and the inside air introduction mode, steps S17 to S2 are performed.
1, the outside air switching door 13 is rotated to the position Pb, and the inside air switching door 15 is rotated to the position Pa. Therefore, the outside air suction port 9 is closed, and the inside air is sucked only through the inside air suction port 11. This sucked air is blower fan motor 17
Is introduced into the cooling unit 5 and the heater unit 7 and air-conditioned. At this time, the differential door 31, the vent door 33, and the foot door 35 are rotated to the position Pa, the air outlet 25 is closed, and the air outlets 27 and 29 are open. Is blown to the driver's chest and is blown from the outlet 29 to the driver's feet.

Next, the operation in the foot mode will be described.
If it is the foot mode, it is not the differential foot mode, the differential mode, the vent mode, or the bi-level mode, so steps S1, 3, 5, 7,
It progresses to step S15 via 9. In step S15, the vent door 33 is rotated to the position Pb to move the vent outlet 27.
And the foot door 35 is rotated to the position Pa to open the foot outlet 29. Then step S17
Then, it is determined whether the mode of the suction port is the outside air introduction mode.

In the foot mode and the outside air introduction mode, the process proceeds from step S17 to step S19 to rotate the outside air switching door 13 to the position Pc and rotate the inside air switching door 15 to the position Pb. .. Therefore, the inside air intake port 11 is closed and the outside air is taken in only through the outside air intake port 9. The sucked outside air is introduced into the cooling unit 5 and the heater unit 7 by the blower fan motor 17 and is air-conditioned. At this time, the differential door 31 is rotated to the position Pa, the vent door 33 is rotated to the position Pb, the foot door 35 is rotated to the position Pa, the outlets 25 and 27 are closed, and the outlet 29 is opened. Therefore, the conditioned air described above is blown from the outlet 29 to the driver's feet.

Next, in the foot mode and the inside air introduction mode, the routine proceeds from step S17 to step S21, the outside air switching door 13 is rotated to the position Pb, and the inside air switching door 15 is rotated to the position Pa. To do. Therefore, the outside air suction port 9 is closed, and the inside air is sucked only through the inside air suction port 11. The sucked air is introduced into the cooling unit 5 and the heater unit 7 by the blower fan motor 17 and is air-conditioned. At this time, the differential door 31 is rotated to the position Pa, the vent door 33 is rotated to the position Pb, the foot door 35 is rotated to the position Pa, the outlets 25 and 27 are closed, and the outlet 29 is opened. Therefore, the air conditioned by the inside air is blown from the outlet 29 to the feet of the driver.

Next, the operation in the differential foot mode will be described. In step S1, it is determined whether the diff foot mode is set. If the diff foot mode is set, the process proceeds from step S1 to step S27. In step S27, the differential door 31 is rotated to the position Pb to open the defroster outlet 25. Subsequently, in step S29, the vent door 33 is rotated to the position Pb, and the foot door 35 is moved to the position Pa.
Turn to. Subsequently, in step S31, the outside air switching door 13 is rotated to the position Pa. In this way, since the outside air switching door 13 is rotated to the position Pa and the differential door 31 is rotated to the position Pb, the outside air intake port 9 and the blowout port 25 are opened, and the outside air intake port 9 is opened via the air conditioning unit. A passage leading to the outlet 25 is formed. Therefore, the outside air sucked through the outside air intake port 9 is introduced into the cooling unit 5 and the heater unit 7 to be air-conditioned, and the air whose temperature is adjusted using the outside air is blown out from the outlet port 25 to the windshield. Therefore, it is possible to appropriately remove the fogging of the windshield.

Further, in step S31, the inside air switching door 15 is rotated to the position Pa. At this time, as described above, the vent door 33 rotates to the position Pb, and the foot door 35
Is rotating to the position Pa, the outlet 27 is closed, and the inside air inlet 11 and the outlet 29 are opened, so that a passage is formed from the inside air inlet 11 to the outlet 29 via the air conditioning unit. .. Therefore, the inside air sucked from the inside air inlet 11 is introduced into the cooling unit 5 and the heater unit 7 and is air-conditioned, and the air whose temperature is adjusted using the inside air is blown from the outlet 29 to the feet of the driver. It In this way, the air conditioned by the inside air is blown to the feet, so that the vehicle interior can be quickly heated.

On the other hand, in the differential foot mode, the inside air switching door 15 is rotated to the position Pa, the vent door 33 is rotated to the position Pb, and the foot door 35 is positioned while the differential door 31 is rotated to the position Pb. Rotate to Pa. As a result, the vent outlet 27 is closed and the inside air inlet 11 and the foot outlet 29 are opened, so that a passage leading from the inside air inlet 11 to the foot outlet 29 via the air conditioning unit is formed. Therefore, the inside air sucked from the inside air inlet 11 is introduced into the cooling unit 5 and the heater unit 7,
Air whose temperature is adjusted using the inside air is blown from the foot outlet 29 to the driver's feet. In this way, the air conditioned by the inside air is blown to the feet, so that the vehicle interior can be quickly heated.

Next, the operation in the defroster mode will be described. If not in the differential foot mode, the process proceeds from step S1 to step S3. When it is determined in step S3 that the defroster mode is selected, the process proceeds to step S23. In step S23, the differential door 31 is rotated to the position Pc. Subsequently, in step S25, the vent door 33 is rotated to the position Pb to close the vent outlet 27, and the foot door 35 is rotated to the position Pb to close the foot outlet 29. Next, in step S19, the outside air switching door 13 is rotated to the position Pc, and the inside air switching door 15 is moved to the position P.
Rotate to b. Therefore, the inside air intake port 11 is closed and the outside air is taken in only through the outside air intake port 9. The sucked outside air is introduced into the cooling unit 5 and the heater unit 7 by the blower fan motor 17 and is air-conditioned. Further, as described above, since the differential door 31 is rotated to the position Pc, the vent door 33 and the foot door 35 are rotated to the position Pb, the air outlets 27 and 29 are closed, and the air outlet 25 is opened. The entire amount of the air whose temperature has been adjusted using the outside air is blown from the outlet 25 to the windshield.

In the above embodiment, the vent door 33 rotates to the position Pb and the foot door 35 moves to the position P.
Only in the diff foot mode of turning to a, the diff door 31 is turned to the position Pb, and the air whose temperature is adjusted using the outside air is blown from the defroster outlet 25 to the windshield, and the temperature is adjusted using the inside air. The generated air is blown from the foot outlet 29 to the feet of the driver, but the present invention is not limited to this, and for example, in the vent mode or bilevel mode in which the vent door 33 is rotated to the position Pa. It goes without saying that you can enable it.

[0033]

As described above, according to the present invention, the partition plate for partitioning the passage leading to the first outlet and the passage leading to the second outlet is provided. Air sucked from the air is guided to the first outlet through the air conditioning unit, and air sucked from the inside air inlet is guided to the second outlet through the air conditioning unit. Therefore, the air conditioned by the outside air is blown to the window glass, so that the fogging of the window glass can be appropriately removed. In addition, since the air conditioned by the inside air is blown to the feet, it is possible to quickly heat the passenger compartment.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment according to the present invention.

FIG. 2 is a cross-sectional view showing a main part of the embodiment shown in FIG. 1 when viewed from an arrow A.

FIG. 3 is a table showing rotation positions of each door in each mode.

FIG. 4 is a flowchart showing the operation of the embodiment according to the present invention.

FIG. 5 is a sectional view of a conventional example.

[Explanation of symbols]

 9 Outside air intake port 11 Inside air intake port 19 Evaporator 21 Heater core 25 Defroster outlet 29 Foot outlet K Partition plate

Claims (1)

[Claims] 1. An outside air intake port for introducing outside air, an inside air intake port for introducing inside air, an air conditioning unit for air conditioning the air introduced from the outside air intake port and the inside air intake port, and blowing air to a window glass. A first outlet that emits air and a second outlet that blows air from at least the foot outlet into the passenger compartment
And a passage for guiding the air introduced from the outside air inlet to the first outlet through the air conditioner, and the air introduced from the inside air inlet through the air conditioner. A partition plate that forms a passage leading to the second outlet, and an opening / closing means that is provided on the partition plate so as to be openable and closable and that can introduce at least the air introduced from the outside air inlet to the second outlet. Characteristic vehicle air conditioner.