JPS633767B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention provides an automatic temperature control air conditioner for a vehicle;
In particular, an automatic temperature control air conditioner for a vehicle that blows out temperature-adjustable air independently from at least two or more outlets into a single vehicle interior, so that each part of the vehicle interior can be air-conditioned separately. The present invention relates to an automatic temperature control air conditioner for a vehicle that has a simple structure and can perform stable air conditioning.

2. Description of the Related Art Conventional automatic temperature control air conditioners for vehicles include those shown in FIGS. 1 to 3, for example. (Utility Application No. 56-176222) Figure 1 is a side view of the vehicle. 1 is a vehicle, and 2 is a passenger compartment. 3 is an automatic temperature control air conditioner for a vehicle. This device 3 has a front seat side air outlet 4 and a rear seat side air outlet 6 connected to each other by a longer air passage 5 in a vehicle interior 2. As shown in FIG. 2, the vehicle automatic temperature control air conditioner 3 has an air intake port 7.
and a motor 9 that drives an air intake fan 8 provided near the air intake port 7. Inside this device 3, a cooling unit 10 and a heater core 11 are provided. 12 is a front air mix door, 13 is a rear air mix door, 14 is an air passage on the front seat side, 5 is an air passage on the rear seat side, 15 is a partition plate;
4 and an air passage 5 on the rear seat side. 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. 16a, 16b, and 16c are doors provided at the respective air outlets 4a, 4b, and 4c.
A damper 17 switches the air passage 5 on the rear seat side to the air passage 14 on the front seat side. Air 18 taken in from the air intake port 7 by the fan 8
is cooled as it passes through the cooling unit 10, and then heated as it passes through the heater core 11. The amount of heated air is determined by the front air mix door 12 and the rear air mix door 1.
3, the front seat side and the rear seat side are adjusted separately. Therefore, the temperature of the air blown out from the side air outlet 4 and the rear seat side air outlet 6 can be adjusted independently. 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 entire amount of air 18 blown out from the front seat side air outlet 4 and the rear seat side air outlet 6 is distributed to the heater core 11. The temperature increases as the temperature increases. When the front air mix door 12 and the rear air mix door 13 are placed in the position shown by the two-dot chain line, the front seat side air outlet 4
All the air blown out from the air outlet 6 on the rear seat side is blown out directly from the cooling unit 10 without passing through the heater core 11, and decreases as the temperature increases. In this way, by adjusting the positions (opening degrees) of the front air mix door 12 and the rear air mix door 13 independently, air can be discharged from the front seat side air outlet 4 and the rear seat side air outlet 6. The temperature of the air in the passenger compartment 2 can be adjusted independently.
Inside, the temperature on the front seat side and the temperature on the rear seat side can be adjusted separately.

Figure 3 shows the temperature 18 of the air blown out from the front and rear air outlets 4 and 6 independently by controlling the positions (opening degrees) of the front air mix door 12 and the rear air mix door 13. A conventional temperature control means for adjusting the temperature is shown. A first temperature control means 19 controls the position of the front air mix door 12 to adjust the temperature of the air blown out from the front air outlet 4. 20 is a second temperature control means;
The temperature of the air blown out from the rear seat side air outlet 6 is adjusted by controlling the position of the rear air mix door 13. The first temperature control means 19 and the second temperature control means 20 include auto amplifiers 21 and 22, temperature setters 23 and 24, outside air sensors 25 and 26 as temperature sensors, and adjustment resistors 27 and 28, respectively.
9, 30, feedback potentiometer 31, 3
2. Power servos 33, 34 connected to the front air mix door 12 or rear air mix door 13 and the feedback potentiometers 31, 32;
Transducers 37, 38 with solenoid valves 35, 36, fan switches 39, 4
0, ignition switches 41, 42, fuses 43, 44, and power supplies 45, 46. The first temperature control means 19 has a front inside air sensor 47 as a temperature sensor at the front of the passenger compartment, and the second temperature control means 20 has a rear inside air sensor 48 as a temperature sensor at the rear of the passenger compartment.

However, in the case of the second temperature control means 20 of the first temperature control means 19 of such a conventional automatic temperature control air conditioner 3 for a vehicle, the front inside air sensor 47 and the rear inside air sensor 48 are separately provided.
and a setting signal set by the temperature setters 23, 24, and temperature sensors 25, 26, 47, 4.
Based on the control signal including the sensor signal from 8, the position (opening degree) of the front or rear air mix doors 12, 13 is independently adjusted and the air outlet 4, 6 on the front or rear seat side is The structure is such that the temperature of the air blown out is controlled separately. For this reason, the front internal air sensor 47 and the rear internal air sensor 4
Sensor 8 is difficult to place in the passenger compartment 2, and sensor 4
If the arrangement of 7 and 48 is incorrect, the air outlet 4 on the front seat side
The air blown from the rear seat side has a large influence on the rear inside air sensor 48, or conversely, the air blown from the air outlet 6 on the rear seat side has a mutual interference that has a big influence on the front inside air sensor 47. There was a problem in that the air conditioning for the front seat side and the rear seat side could not be performed stably separately. Furthermore, two of the front internal air sensors 47 and rear internal air sensors 48
Since it is necessary to install two sensors in the vehicle interior, wiring and equipment, and in some cases two aspirator fans (fans that suck indoor air) are required, which causes problems such as troublesome installation work and high costs. It was hot.

The present invention has been made by focusing on such conventional problems, and the first temperature control means performs temperature adjustment based on a control signal including a sensor signal of a temperature sensor, but the second temperature control means The object of the present invention is to solve the above problem by adjusting the temperature based on a control signal that includes a signal that is a proportional change of the control signal of the first temperature control means.

The present invention will be explained below based on the drawings.

FIG. 4 shows an automatic temperature control air conditioner for a vehicle according to an embodiment of the present invention.

In FIG. 4, the same parts as those of the conventional automatic temperature control air conditioner for vehicles shown in FIGS. 1 to 3 are given the same numbers and will be explained. Reference numeral 51 indicates an automatic temperature control air conditioner for a vehicle according to this embodiment. A cooling unit 10 cools air 18 drawn into the device 51 from an air intake port (not shown) by a fan (not shown). Reference numeral 11 denotes a heater core, which heats the intake air 18. 12
is a front air mix door, and by changing its position (opening degree) and adjusting the amount of air passing through the heater core 11, the temperature of the air blown out from the front seat side air outlet 4 is adjusted. Reference numeral 13 denotes a rear air mix door, which adjusts the temperature of the air blown out from the air outlet 6 on the rear seat side by changing its position (opening degree) to adjust the amount of air passing through the heater core 11. 15 is a partition plate, and the device 51
The passage of air 18 inside is separated into the front seat side and the rear seat side. 17 is a damper, which switches air blown toward the rear seat side to the front seat side. The front seat side air outlet 4 includes a defroster air outlet 4a, a front seat vent air outlet 4b, and a front seat footwell air outlet 4c. 1
6a, 16b, 16c are air outlets 4a, 4b, 4
This is the door installed in c. 14 is an air passage on the front seat side, and 5 is an air passage on the rear seat side. Front air mix door 12 and rear air mix door 13
By adjusting the position (opening degree) of the
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. That is, front air mix door 1
2 and the rear air mix door 13 are respectively placed in the positions shown by the solid lines, the entire amount of air blown out from the front seat side air outlet 4 and the rear seat side air outlet 6 will pass through the heater core 11, and the temperature will decrease. It also rises. 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 the air 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 decreases as the temperature increases. In this way,
By independently adjusting the positions (opening degrees) of the front air mix door 12 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. It is possible to adjust the temperature of the front seat side and the temperature of the rear seat side separately in the vehicle interior. Reference numeral 53 denotes a first temperature control means that adjusts the temperature of the air blown out from the front seat side air outlet 4. 5
4 is a second temperature control means, and a rear seat side air outlet 6
Adjust the temperature of the air blown out. The first temperature control means 53 includes an autoamplifier 21 that performs judgment and commands, a temperature setting device 23 that generates a temperature setting signal, and an outside air sensor 25 as a temperature sensor that detects the temperature of outside air and outputs a sensor signal. , an inside air sensor 55 as a temperature sensor that detects the temperature inside the vehicle interior and outputs a sensor signal, and an adjustment resistor 2
7, 28, and feedback potentiometer 31.
Connected to the front air mix door 12 and feedback potentiometer 31, negative pressure displacement (length)
The power servo 33 has a power servo 33 that converts the electric signal into a negative pressure, and solenoid valves 35 and 36 that connect to the atmosphere or a negative pressure source to convert the electric signal into a negative pressure.
a transducer 37 that supplies negative pressure to the fan switch 39, and an ignition switch 41.
, a fuse 43 , and a power source 45 . The second temperature control means 54 includes an autoamplifier 22 that performs judgment and commands, a voltage dividing resistor 56 that communicates with the first temperature control means 53, an auxiliary temperature setting device 57 that generates an auxiliary setting signal, and a feedback potentiometer. 32, a power servo 34 that is connected to the rear air mix door 13 and the feedback potentiometer 32 and converts negative pressure into displacement (length), and a power servo 34 that converts negative pressure into displacement (length), and a power servo 34 that converts negative pressure into atmospheric or negative pressure. a transducer 38 having solenoid valves 35 and 36 communicating with the source and supplying negative pressure to the power servo 34;
, a fan switch 40 , an ignition switch 41 , a fuse 44 , and a power source 46 .

Next, the effect will be explained.

First, the temperature of the air blown out from the front seat side air outlet 4 is controlled as follows. Temperature setting device 23
The set temperature of the air blown out from the front seat side air outlet 4 side, which is set in , is expressed by a resistance value and becomes a set signal. When the outside air temperature changes or the indoor temperature changes with respect to this set temperature, the resistance values of the outside air and inside air sensors 25, 55 change and output sensor signals. In response to this change, the auto amplifier 21 compares the resistance value of the feedback potentiometer 31 that is linked with the front air mix door 12, that is, the feedback signal, and makes a judgment based on the control signal including the setting signal and the sensor signal. and sends a command signal to the transducer 37.
Activate the transducer 37. The transducer 37 receives the command signal from the auto amplifier 21, operates the solenoid valves 35 and 36 to switch to negative pressure, and sends it to the power servo 33.
The opening degree of the front air mix door 12 is changed by converting the negative pressure into a displacement (change in length) amount. At the same time, the feedback potentiometer 31 which is interlocked with the front air mix door 12 notifies the auto amplifier 21 of the position (opening degree) of the front air mix door 12 by means of a feedback signal. In this way, air at a temperature that matches the position (opening degree) of the front air mix door 12 is blown into the vehicle interior, keeping the temperature in the vehicle interior constant.

On the other hand, the temperature of the air blown out from the rear seat side air outlet 6 is determined by the resistance value determined by the temperature setting of the auxiliary temperature setting device 57, that is, the auxiliary temperature setting signal and the partial pressure resistance 5.
It is controlled by the control signal of the first temperature control means 53 which is proportionally changed and inputted by 6. The auto amplifier 22 includes an auxiliary setting signal from an auxiliary temperature setting device 57 that is set in the same manner as the temperature setting device 23 described above, and a control signal for the first temperature control means 53 that is proportionally changed and inputted by a voltage dividing resistor 56. The temperature of the air blown out from the air outlet 6 on the rear seat side is adjusted by adjusting the position of the rear air mix door 13 based on the control signal. The size of voltage dividing resistor 56 is determined by experiment.

In this way, in the vehicle automatic temperature control air conditioner 51 of this embodiment, the temperature of the air blown out from the front seat side air outlet 4 is controlled by the first temperature control means 53.
Accordingly, the temperature of the air blown out from the rear seat side air outlet 6 is controlled by a control signal including a setting signal from the temperature setting device 23 and sensor signals from the outside air and inside air sensors 25 and 55, and the temperature of the air blown out from the rear seat side air outlet 6 is controlled by the second temperature control means 54.
Therefore, it is controlled by a control signal including an auxiliary setting signal from the auxiliary temperature setting device 57 and a control signal of the first temperature control means 53 which is proportionally changed and inputted by the voltage dividing resistor 56.

As explained above, according to this invention,
In an automatic temperature control air conditioner for a vehicle, which blows out temperature-adjustable air independently from at least two or more outlets into one vehicle interior, and is capable of separately air conditioning each part of the vehicle interior. It has a temperature setting device and a temperature sensor, and controls the temperature of the air blown out from one outlet based on a control signal including a setting signal set by the temperature setting device and a sensor signal detected by the temperature sensor. the auxiliary temperature setting device and a voltage dividing resistor communicating with the first temperature controlling device, the first temperature being applied via the auxiliary setting signal set by the auxiliary temperature setting device and the voltage dividing resistor; and a second temperature control means for controlling the temperature of the air blown out from the other outlet based on the control signal including the proportionally changed control signal of the controller. This has the effect that air conditioning can be performed stably and separately for the front seat side and the rear seat side. Furthermore, since the number of temperature sensors can be reduced, the number of parts can be reduced and the installation work can be made easier.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view of a vehicle equipped with a conventional automatic temperature control air conditioning system for vehicles, and FIG. 2 is a sectional view of a conventional automatic temperature control air conditioning system for vehicles.
FIG. 3 is a schematic diagram of a conventional automatic temperature control air conditioner for a vehicle, and FIG. 4 is a schematic diagram of an automatic temperature control air conditioner for a vehicle according to an embodiment of the present invention. 4...Front seat side air outlet, 6...Rear seat side air outlet, 10...Cooling unit, 11...Heater core, 12...Front air mix door, 1
3...Rear air mix door, 18...Air, 2
1, 22... Auto amplifier, 23... Temperature setting device, 25... Outside air sensor, 27, 28... Adjustment resistor, 31, 32... Feedback potential,
33... Power servo, 35, 36... Solenoid valve, 37, 38... Transducer,
39, 40... fuse, 45, 46... power supply,
51...Vehicle automatic temperature control air conditioner, 53
...first temperature control means, 54 ... second temperature control means, 55 ... indoor air sensor, 56 ... partial pressure resistance, 5
7...Auxiliary temperature setting device.

Claims (1)

[Claims] 1. In an automatic temperature control air conditioner for a vehicle that blows air whose temperature can be adjusted independently from at least two or more outlets into a single vehicle interior, and is capable of separately controlling the air in each part of the vehicle interior. , has a temperature setting device and a temperature sensor, and controls the temperature of the air blown out from one outlet based on a control signal including a setting signal set by the temperature setting device and a sensor signal detected by the temperature sensor. a first temperature control means to control, and a second temperature control to control the temperature of the air blown out from the other outlet based on the auxiliary setting signal set by the auxiliary temperature setting device and the control signal of the first temperature controller. An automatic temperature control air conditioner for a vehicle, comprising: means.