JPS5835532Y2 - Vehicle air conditioner - Google Patents

Description

[Detailed Description of the Invention] The present invention aims at rapid cooling and power saving of an air conditioner for a vehicle.

Conventionally, vehicle air conditioners are equipped with a blower, cooler, and heater, and are configured so that the internal and external air intake, cooling outlet, and heating outlet can be switched as appropriate, and the amount of air blown by the blower can also be adjusted according to the passenger's preference. It was a configuration that could be freely selected.

Therefore, although the passenger can set the mode to his or her preference, there is a drawback that the operation becomes complicated when it is desired to select an appropriate mode in order to save power.

In view of the above-mentioned reasons, the present invention is configured so that when the air blowing amount of the blower is maximized, the internal/external air intake is switched to internal air intake, thereby achieving rapid cooling and power saving.

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an air conditioner used in the present invention, in which a blower 2, a cooler 3, and a heater 4 are disposed within a unit 1.

A shutter 7 for switching between the outside air intake port 5 and the inside air intake port 6 is installed at the starting end of the unit 1, and the shutter 7 opens and closes the negative pressure air circuit 10 by opening and closing a solenoid valve 9 via an actuator 8. It is configured to be controlled by

11 is an air mix shutter, 12 is a shutter that opens and closes the upper air outlet 13, 14 is a shutter that opens and closes the foot air outlet 15, and 16 is a shutter that opens and closes the defrost air outlet 17.

FIG. 2 is an electrical circuit of the present invention.

The drive motor 2a of the blower 2 is connected to the power supply 18, and the current supply circuit of the motor 2a is connected to the H terminal of the changeover switch 20 through a diode 19.

This changeover switch 20 constitutes rotation speed control means for the blower 2.

It is also connected from between the motor 2a and the diode 19 to the M terminal of the switch 20 via a resistor 21, and further connected to the M terminal of the switch 20.
The terminal is connected to the L terminal via a resistor 22.

On the other hand, a solenoid valve 9 that controls opening and closing of the negative pressure air circuit 10 described above
is connected between the power supply 18 and the H terminal of the switch 20 in parallel with the motor 2a.

A movable terminal B of the switch 20 is grounded.

The air conditioner of the present invention configured as described above has a changeover switch 20, and when connected to the M terminal, each shutter shown in FIG. 1 blows air at the pre-operated position. When switched to the H terminal, the blower 2 rotates at high speed to obtain the maximum air volume, and at the same time the solenoid valve 9 operates, opening the negative pressure air circuit 10 and causing the actuator 8 to operate.
rotates the shirt shutter 7 in a direction to introduce inside air.

Therefore, the air conditioner can obtain the maximum air volume by introducing inside air, and can perform rapid cooling.

At this time, the cooler 3 is in a cooling state by a refrigeration cycle (not shown).

It goes without saying that rapid heating is also possible when the heater 4 is in operation (for example, in winter).

As described above, in the present invention, when the air flow rate of the blower 2 is maximized, that is, when the switch 20, which is the rotation speed control means of the blower 2, is connected to the H terminal, the switch 20
Since the indoor air is introduced in conjunction with the indoor air circulation, it is possible to perform rapid cooling (rapid heating in winter) by circulating the indoor air, and prevent the slowing of the rapid cooling effect or the increase in power consumption that would occur when introducing outside air. However, it is an extremely effective idea in practice, as it can be expected to save energy.

Note that the rotation speed control means can be used not only manually but also for automatically controlling the blower.

[Brief explanation of drawings]

FIG. 1 is a structural diagram of an air conditioner to which the present invention is applied, and FIG. 2 is an electrical circuit diagram according to the present invention. 2: Blower, 2a: Motor, 3: Cooler, 4: Heater,
5: Outside air intake port, 6: Inside air intake port, 7: Shutter, 8:
Actuator, 9: Solenoid valve, 20: Selector switch.

Claims (1)

[Scope of utility model registration request] It includes at least an outside air intake port, an inside air intake port, a shutter for switching between the outside air intake port and the inside air intake, a blower, a cooler, a rotation speed control means for the blower, and a switching means for the shutter. An air conditioner for a vehicle, characterized in that when the rotational speed control means controls the blower to rotate at high speed, the switching means automatically switches the shutter to a position in which the inside air intake port is opened.