JPS62261514A - Air conditioner for vehicle - Google Patents

Abstract

PURPOSE:To improve the starting-up characteristic by discriminating the case when the car interior temperature is to be varied or kept during the blow-out of air onto the both of the front and rear seat sides and varying the distribution of the air blowing quantity to the front and rear seat sides according to the result of the judgement. CONSTITUTION:An air conditioner 30 has the blowing-out ports 4 and 6 on the front and rear seat sides, air suction port 7, and a motor 9 for driving a fan 8 for intaking air which is arranged in the vicinity of the suction port 7. The air passages 14 and 5 on the front and rear seat sides are partitioned by a partitioning plate 15, and a door 17 for switching passages is installed onto the partitioning plate 15. In this case, a throttling door 21 is installed in turnable ways behind the door 17 in the air passage 5 on the rear seat side. The throttling door 21 is opening/closing-controlled, together with the door 17, by an actuator 21a controlled by the output of a calculator 20. In this case, the calculator 20 discriminates the case when the car interior temperature is to be varied or to be kept.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an air conditioner for a vehicle, and in particular, the present invention relates to an air conditioner for a vehicle, and in particular to an air conditioner that independently adjusts the temperature from the air outlet to the front seat side and the rear seat side of the vehicle interior.
The present invention relates to an air conditioner which can blow out as much air as possible and separately condition the air in each part of a vehicle interior.

(Prior Art) As a conventional air conditioner for a vehicle, there are, for example, those shown in FIG. 7 and FIG.
420), and in FIG. 7, 1 is a vehicle, 2 is a passenger compartment, and 3 is an automatic temperature control air conditioner for the vehicle. This air conditioner 3 has an air outlet 4 on the front seat side and an air outlet 6 on the rear seat side connected by an air passage 5 in the passenger compartment 2. It has a lower part and a motor 9 that drives an air suction fan 8 arranged near the lower part. The air conditioner 3 includes a cooling unit 10, a heater core 11, a front air mix door 12, and a rear air mix door 13.
are arranged at the entrances of the air passage 14 on the front seat side and the air passage 5 on the rear seat side, respectively. The air passage 14 on the front seat side and the air passage 5 on the rear seat side are separated by a partition plate 15. The air outlet 4 on the front seat side includes a defroster air outlet 4a, a front seat vent air outlet 4b, and a front seat footwell air outlet 4c, and these air outlets are provided with doors 16a, 16b, and 16c, respectively. Furthermore, the partition plate 15 is provided with a door 17 that switches the air passage 5 on the rear seat side to the air passage 14 on the front seat side.

Since the vehicle automatic temperature control air conditioning bag M3 is configured as described above, the air 18 taken in from the air intake lower by the fan 8 is cooled when passing through the cooling unit IO, and then passes through the heater core 11. It is heated by The amount of air heated here is adjusted separately for the front seat side and the rear seat side by the front air mix door 12 and the rear air mix door 13. Therefore, the temperature of the air blown out from the front seat side air outlet 4 and the rear seat side air outlet 6 can be independently set to yJm.

That is, when the front air mix door 12 and the rear air mix door 13 are placed at the positions shown by the solid lines, the air 18 blown out from the front seat side air outlet 4 and the rear seat side air outlet 6 is as follows.
The entire amount passes through the heater core 11, and the temperature becomes the highest. On the other hand, when the front air mix door 12 and the rear air mix door 13 are placed in the positions shown by the two-dot chain lines, all of the air 18 blown out from the front seat side air outlet 4 and the rear seat side air outlet 6 passes through the heater core 11. It is blown out directly from the cooling unit 10 without any heating, and the temperature is the lowest. In this way, the front air mix door 1
By independently adjusting the positions (opening degrees) of the rear air mix door 2 and the rear air mix door 13, the temperature of the air blown out from the front seat side air outlet 4 and the rear seat side air outlet 6 can be adjusted independently. Inside the vehicle interior 2, the temperature on the front seat side and the temperature on the rear seat side can be adjusted separately.

(Problem to be Solved by the Invention) However, in such conventional vehicle air conditioners, temperature-controlled air is delivered to the front seat side of the vehicle interior by a door provided on the partition plate of the air passage. Air is blown only to the front and rear seats, and once the position of the door is set, the distribution of the amount of air blown to the front and rear seats is fixed, so air is blown to both the front and rear seats. In this case, the amount of air blown to the front seat side is reduced by the amount of air blown to the rear seat side. This is not a problem when the temperature inside the vehicle is stable or the same as the target temperature, but when the difference between the temperature inside the vehicle and the target temperature is large, especially when the temperature inside the vehicle is high and you want to cool it quickly. There was a problem that the amount of cold air blown out on the front seat side was insufficient, and the discomfort was difficult to resolve. (Means for solving the problem) The present invention has been developed in view of these conventional problems. This is a vehicle air system that distinguishes between changing the temperature inside the vehicle and maintaining that temperature, and changing the distribution of the amount of air blown to the front and rear seats depending on the results of the determination. The purpose is to provide a harmonizing device.

In order to achieve this objective, the present invention blows out air whose temperature can be adjusted independently from the air outlet to the front seat side and the rear seat side in the vehicle interior, as shown in the diagram corresponding to the claims in FIG. In a vehicle air conditioner that is able to condition the air in each part of the vehicle compartment separately, the case where the temperature inside the vehicle compartment is changed while blowing air to both the front seat side and the rear seat side. The system is equipped with a discriminating means A for discriminating whether the temperature is to be maintained or not, and an adjusting means B for changing the distribution of the amount of air blown to the front seat side and the rear seat side according to the result of the discrimination.

(Example) An embodiment of the present invention will be described below.

FIG. 2 is a sectional view of a vehicle air conditioner according to the present invention, and the same parts as in the conventional example shown in FIG. 8 are given the same reference numerals. The air conditioner 330 shown in FIG. 2 has an air outlet 4 on the front seat side and an air outlet 6 on the rear seat side connected by an air passage 5 in the vehicle interior, and is arranged at an air intake lower and in the vicinity thereof. A motor 9 that drives a fan 8 for sucking the air
and has. The air conditioner 30 is provided with a cooling unit IO, a heater core 11, a front air mix door 12, and a rear air mix door 13.
The front air mix door 12 and the rear air mix door 13 are connected to an air passage 14 on the front seat side and an air passage 5 on the rear seat side, respectively.
located at the entrance. The air passage 14 on the front seat side and the air passage 5 on the rear seat side are separated by a partition plate 15. The air outlet 4 on the front seat side includes a defroster air outlet 4a, a front seat vent air outlet 4b, and a front seat footwell air outlet 4C, and these air outlets are provided with doors 16a, 16b, and lee, respectively. The air outlet 6 on the rear seat side consists of a rear seat vent air outlet 6a and a rear seat footwell air outlet 6b.
are communicating. The partition plate 15 has an air passage 5 on the rear seat side.
A door 17 is provided for switching the air to the air passage 14 on the front seat side. ”
In this embodiment, the door 17 is actuated by actuator 1-7.
The actuator 17a is opened and closed by the actuator 17a, and the actuator 17a is controlled by the output from the arithmetic unit 20 shown in FIG. Further, behind the door 17 in the air passage 5 on the rear seat side, a throttle door 21 is rotatably provided for adjusting the amount of air blown out to the rear seat side. Partition plate 15
It is operated by an actuator 21a that is controlled by an output from a computing device 20, similar to the door 17 of the above. These doors and the seven cutout units constitute an adjusting means for changing the distribution of the air blowing amount between the front seat side and the rear seat side. Note that a door 22 is provided at a position where the air passage 5 branches into the rear seat vent outlet 6a and the rear seat footwell outlet 6b. - The arithmetic unit 20 shown in FIG. 3 determines whether to change the temperature inside the vehicle while blowing air to both the front seat side and the rear seat side and whether to maintain that temperature. It is provided as a means, and is composed of, for example, a microcomputer. A front seat mode signal Mf, a rear seat mode signal Mr, a set temperature signal Ts, and an indoor temperature signal Ti are input to this arithmetic device 20. The front seat mode signal Mf indicates that the air outlet on the front seat side is a defroster (DEF),
It indicates either the pen) (VENT) or the foot, and is determined by a mode setting means such as a switch. vk seat mode signal Mt", the balloon on the rear seat side is a pen)
(VENT) or not, and is determined by turning on/off the rear seat vent switch 23. Further, the set temperature signal Ts and the indoor temperature signal Ti are sent from the temperature setting device and the indoor temperature sensor, respectively. The arithmetic device 20 outputs control signals corresponding to these input signals to the seven cutout units 17a and 21a.

That is, as shown in the flowchart of FIG. 4, when both the front seat mode and the rear seat mode are VENT, the arithmetic device 20 determines whether the difference 1Ti-Ts between the room temperature and the set temperature is greater than the predetermined value T. If the answer is "Yes", a signal to open the door 17 is sent to the 7-cut duct 17a to increase the airflow amount on the front seat side in order to bring the indoor temperature closer to the set temperature. When there is not much difference between the temperature and the set temperature, a signal for half-opening the doors 17 and 21 is sent to the 7 actuators 17a and 21a, thereby reducing the airflow amount on the front seat side. Also, if the front seat mode is neither DEF nor VENT, door 17
A signal for opening is sent to the 7th cut unit 17a. on the other hand,
If the front seat mode is DEF or the front seat mode is VENT
and the rear seat mode is not VENT, door 17
and 21 is sent to the seventh outlet 17a and 21a, and no air is blown to the rear seat side.

Next, FIG. 5 shows another embodiment.

In this embodiment, the determination of the temperature state by the arithmetic unit 20 is performed by
Drive voltage f of the motor 9 that drives the fan for air intake
This is done depending on the height of the That is,
As shown in the flowchart of FIG. 6, when both the front seat mode and the rear seat mode are VENT, the arithmetic unit 20 determines whether the motor voltage Vf is higher than a predetermined value (2).
If ``Yes'', a signal to open the door 17 is sent to the 7th outlet 17a in order to increase the airflow amount on the front seat side, and if the motor voltage Vf is low, a signal to half open the doors 17 and 21 is sent to the 7th outlet 17a. By sending the air to 17a and 21a, the amount of air blown on the front seat side is reduced.

In this way, it is possible to determine whether to change the temperature in the vehicle interior or to maintain that temperature not only by the difference between the temperature in the vehicle interior and the set temperature, but also by the level of the fan drive voltage for air intake. The distribution of blown acid to the front and rear seats can be changed depending on the determination result.

(Effects of the Invention) As described above, the present invention blows out air whose temperature can be adjusted independently from the air outlet to the front seat side and the rear seat side in the vehicle interior, thereby achieving air conditioning in each part of the vehicle interior. In a vehicle air conditioner that can be operated separately, determines when to change the temperature inside the vehicle and when to maintain that temperature when blowing air to both the front seat side and the rear seat side. Since the system is equipped with a discrimination means for determining whether the temperature in the passenger compartment is changed and an adjustment means for changing the distribution of air blowing to the front seat side and the rear seat side according to the discrimination result, it is possible to change the temperature inside the vehicle. It is possible to determine the appropriate distribution of air blowing amount depending on whether the vehicle is being held or not, and especially when there is a large difference between the temperature inside the vehicle and the target temperature and you want to cool or heat the vehicle quickly, Increase the amount of blowout,
The effect of quickly relieving discomfort can be obtained.

[Brief explanation of drawings]

FIG. 1 is a diagram corresponding to claims, FIG. 2 is a sectional view of an embodiment of the present invention, FIG. 3 is a block diagram of the embodiment of FIG. 1, FIG. 4 is a flowchart showing the operation of the embodiment, and FIG. Figure 6 is a block diagram of another embodiment, Figure 6 is a flowchart showing the operation of the embodiment shown in Figure 5, Figure 7 is a schematic sectional view of a vehicle equipped with a conventional vehicle air conditioner, and Figure 8 is a FIG. 1 is a cross-sectional view of a conventional automatic temperature control air conditioner for a vehicle. A-111 discrimination means, B--m-adjustment means. ■---Vehicle, 2-111 vehicle interior, 3-111 vehicle air conditioner, 4-111 front seat side air outlet, 5-111 rear seat side air passage, 6- --- Rear seat side air outlet, 7-- Air intake port, 8-111 fan, 9--
--Motor, 1o---Cooling unit, 11-11-Heater core, 12---Front air mix door, 13---
Rear air mix door, 14---Air passage on the front seat side. 15---One partition plate, 16a, 16b, 16cm---One outlet door, 17
---Blowout J, distribution adjustment door. 17a--7 actuator, 20--one calculation device, 21--one throttle door, 21a--actuator, 23--one rear seat vent switch. 30---One vehicle air conditioner. Patent applicant: Nissan Motor Co., Ltd. Agent: Ben PP±. j′-th l
Diagram 2nd cause 3rd cause

Claims (3)

[Claims] (1) A vehicle air conditioner that blows out air whose temperature can be adjusted independently from the air outlets to the front and rear seats of the vehicle interior, allowing each part of the vehicle interior to be air-conditioned separately. The device includes a determination means for determining whether to change the temperature in the vehicle interior or to maintain the temperature when blowing air to both the front seat side and the rear seat side, and a determination means for determining whether to change the temperature in the vehicle interior or to maintain the temperature, and according to the determination result. An air conditioner for a vehicle, comprising: an adjustment means for changing the distribution of air blowing amount to the front seat side and the rear seat side. (2) The air conditioner for a vehicle according to claim 1, wherein the determining means is constituted by an arithmetic device that determines whether the difference between the temperature inside the vehicle interior and the set temperature is larger than a predetermined value. (3) The air conditioner for a vehicle according to claim 1, wherein the determining means is constituted by an arithmetic device that determines whether or not the fan drive voltage for air intake is higher than a predetermined value.