JPS6228015B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle air conditioner that has a simple configuration and provides good temperature control.

For example, a vehicle air conditioner is known that adjusts the temperature of air blown into a vehicle interior by adjusting the opening degree of a cold air/warm air mixing damper. In this type of device, in order to automatically maintain the temperature inside the vehicle at the target temperature, a temperature setting device, a signal from this setting device, a signal indicating the temperature inside and outside the vehicle, and a signal indicating the opening degree of the damper are provided. The opening degree of the damper is controlled in a closed loop using a circuit that calculates an appropriate opening degree of the damper, and an electro-mechanical converter that drives the damper until the appropriate opening degree is reached by the output signal of this circuit. Also known are control devices having the same configuration.

However, since this control device requires a converter with sufficient power to change the opening degree of the damper as a temperature control element, it has the problem of increasing the size of the entire device and increasing manufacturing costs. was.

In view of this problem, the present invention provides an air conditioning control device for a vehicle that does not require an electric-mechanical converter and that allows an occupant to easily control the temperature in the vehicle interior to a desired temperature. The purpose is to

In order to achieve this objective, the present invention discards the concept of conventional control devices that automatically control the temperature, and is equipped with an operation panel installed in the vehicle interior.
a manual operating device operated by a passenger; and a downstream side disposed within a ventilation system communicating with the vehicle interior, and mechanically operated in conjunction with the manual operating device to provide air flow from the ventilation system into the vehicle interior. A temperature control member that adjusts the temperature of the air blown out; a temperature setting device that sets a target temperature in the vehicle interior; a calculation means for outputting a signal indicating an operation target position of the manual operating device for temperature-controlling the interior of the vehicle to the target temperature based on various control inputs; A technical means is adopted that includes an instruction means for indicating an operation target position of the manual operating device according to an output signal.

The present invention will be described below with reference to embodiments shown in the accompanying drawings. In this embodiment, the present invention is applied to a generally known automobile air conditioner using a cold air/warm air mixing method. An outside air suction port 1a for introducing outside air and an inside air suction port 1b for circulating inside air are formed, and both suction ports are opened and closed by an inside and outside air damper 2. Inside the ventilation duct 1, toward the downstream side, there are a blower motor 3,
An evaporator 4 that forms part of the cooling cycle, a heater core 5 that forms part of the engine cooling water cycle, and a temperature control damper (A/ M dampers) 7 are arranged in order. At the most downstream part of the ventilation duct 1, there are upper and lower air outlets 1c and 1 for blowing out the temperature-controlled air in the duct to the upper and lower parts of the vehicle interior, which are air-conditioned areas.
d, and both outlets are opened and closed by an outlet damper 8.

The control device 10 is configured to receive various information signals and to guide and display the operation of the A/M damper 7 in order to perform temperature control. As a means for inputting various information signals to the control device 10, an inside temperature sensor 2 including a negative characteristic heat-sensitive resistor that generates an analog voltage signal according to the temperature Tr in the vehicle interior.
1. Outside temperature sensor 2 including a negative characteristic heat-sensitive resistor that generates an analog voltage signal according to the temperature Ta outside the vehicle interior
2. Temperature setting device 23 that includes a potentiometer that generates an analog voltage signal that corresponds to the set temperature Ts (set position); Opening level that includes a potentiometer that generates an analog voltage signal that corresponds to the opening degree Ar of the temperature control damper 7 A sensor 24 and switches 11 and 12 for operation, stop, operation mode selection, etc. are set.
The control device 10 receives power supply from an on-vehicle battery 14 via an ignition switch 13.

Further, the control device 10 is configured integrally with an operation panel 15, and the operation panel 15 is configured to control the switch 1.
1, 12, temperature setting device 23, damper 2,
Operators 16, 17, for manually operating 7, 8;
18, and light emitters 19 and 20 for guiding the operating direction of the operating device 17 of the damper 7 by means of a light emitting display. The internal/external air damper 2 is connected to the operating device 16 via a link mechanism 34 and wires 35, 36, and selectively opens and closes the suction ports 1a, 1b in conjunction with vertically operating the operating lever 16a. The A/M damper 7 is connected to the operating device 17 via a link mechanism 31 and wires 32, 33, and is positioned in conjunction with left and right operations of the operating lever 17a. Similarly, the outlet damper 8 is connected to the operating device 18 via a link mechanism 37 and wires 38, 39, and opens and closes the outlets 1c, 1d by operating the operating lever 18a up and down. Note that the operating devices 16, 17, and 18 are the operating lever 16.
It is configured to include known frictional engagement means for positioning a, 17a, and 18a at arbitrary positions, respectively.

In FIG. 2 showing the electrical system, the temperature setting device 23
and the potential at the connection point with the series circuit of the inside temperature sensor 21, outside temperature sensor 22, and opening sensor 24.
By comparing V ₁ with reference voltages V ₂ and V ₃ of different levels by two voltage comparators 10a and 10b, light is emitted through transistors 10c and 10d, which is the light source of the light emitters 19 and 20. The configuration is such that the diodes 19a and 20a are turned on and off.

When the internal temperature is high and the potential V ₁ is lower than the reference potential V ₃ , the output of the comparator 10b turns on the transistor 10d, lights up the light emitting diode 19a, and the light emitter 19 on the operation panel 15 activates the operation 17 operating lever 17a is displayed to be operated in the direction of the arrow indicated by the light emitter 19. As a result, when the A/M damper 7 is manually operated by the operating lever 17a to further open the bypass passage 6 via the link mechanism 31 and the wires 32, 33,
The temperature inside the vehicle can be lowered. A/M
The displacement of the damper 7 is negatively fed back by the opening sensor 24 to increase the potential _V1 . Furthermore, as the inside air temperature decreases, the resistance value of the inside air sensor 21 increases and _{the potential V 1 increases} . Above V ₃ , light emitting diode 19
a will go out to indicate that the operation is correct.

Conversely, when the internal temperature is low and the potential V ₁ is higher than the reference potential V ₂ , the output of the comparator 10 a turns on the transistor 10 c and lights up the light emitting diode 20 a, which is operated by the light emitter 20 on the operation panel 15. The control lever 17a of the device 17 is displayed to be operated in the direction of the light emitter 20. As a result, A/M
By operating the control lever 17a so that the damper 7 closes the bypass passage 6 more, the temperature in the vehicle interior can be increased. Then, when the A/M damper 7 moves to an appropriate position, the potential V ₁ falls below the reference potential V ₂ and the light emitting diode 20a goes out, indicating that the operation is proper.

To change the set temperature, move the operating lever 23a of the temperature setting device 23 to the left or right.
This can be done by adjusting the potential _V1 . The outside temperature sensor 22 is used to correct the potential V ₁ according to the temperature outside the vehicle interior and keep the temperature inside the vehicle interior stable.

Note that there is a difference between the reference potentials V ₂ and V ₃ ,
Since the comparators 10a and 10b are also provided with hysteresis, the potential at which the light emitting diode 19a lights up
A dead zone is provided between V ₁ and the potential V ₁ at which the light emitting diode 20a lights up, and the operating lever 17
The operating position of a can be stably displayed.

In this way, the user can obtain the target set temperature simply by moving the operating lever 17a according to the display on the light emitters 19, 20.

Note that C, which is connected to the switch 12, indicates an electric starter for the cooling cycle, and H indicates an electric starter for the cooling water cycle.

The present invention is not limited to the embodiments described above, but can be implemented in various embodiments. Some modified examples will be explained below.

(1) The calculation means for calculating the operation target position of the operating device uses an analog circuit as shown in Figure 2, a digital circuit, and a microcomputer that performs processing according to a control program determined by software. Good too. As the control input conditions used to determine the operation target position, correction information other than the vehicle interior temperature and vehicle exterior temperature may be added.

(2) Furthermore, the operation target position may be calculated as a signal that displays the operation position instead of a signal that indicates the operation direction of the operation device and the coincidence thereof. In this case, the display may be a plurality of light emitting elements 40 to 51 arranged one-dimensionally so as to selectively emit light to indicate the expected operating position near the operating device 17, as shown in FIG.

(3) In addition to using a linearly movable operating lever, a rotating knob, push/pull bar, etc. may be used as the operating device.

(4) As the instruction means for indicating the operation target position of the operation device, a sound generator that notifies the operation direction by a tone may be used.

(5) As the temperature control means, an opening control valve may be used to control the amount of heat exchange medium flowing into the heat exchanger.

(6) The opening sensor 24 may be configured integrally with the operating device 17.

As described above, in the present invention, the operation target position of the manual operating device for controlling the temperature inside the vehicle interior to the target temperature is calculated by the calculation means and instructed by the instruction means, so that the electric-mechanical conversion is performed. An excellent effect can be obtained in that no device is required, and the passenger can easily operate the manual operation device to a position where the target temperature can be obtained.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram of a device according to an embodiment of the present invention, Fig. 2 is an electrical wiring diagram showing its electrical control system, and Fig. 3 is a main part of another embodiment of the present invention. FIG. 3 is a plan view of the vicinity of the operating device. 1... Ventilation duct forming a ventilation system, 3... Blower motor, 4, 5... Cooler core and heater core as heat exchangers, 7... Temperature control damper as temperature control means, 10a, 10b, 21, 22, 23,
24... Comparators 10a, 10b forming calculating means, inside temperature sensor, outside temperature sensor, target temperature setting device, opening sensor, 17... Operating device, 19, 20... Light emitter forming leading means, 31, 32, 33...Link mechanism and wires 32, 33, 40 to transmit the operation amount of the operating device 17 as the displacement amount of the damper 7
51...A light emitter that is another example of the leading means.

Claims (1)

[Claims] 1. Provided on an operation panel disposed inside the vehicle,
a manual operating device operated by a passenger; and a downstream side disposed in a ventilation system communicating with the interior of the vehicle, and mechanically operated in conjunction with the manual operating device to provide air flow from the ventilation system into the interior of the vehicle. A temperature control member that adjusts the temperature of the air blown out; a temperature setting device that sets a target temperature in the vehicle interior; a calculation means for outputting a signal indicating an operation target position of the manual operating device for temperature-controlling the vehicle interior to the target temperature based on various control inputs; An air conditioning control device for a vehicle, comprising an instruction means for instructing an operation target position of the manual operating device according to an output signal.