JPS58194615A - Car air conditioner - Google Patents

Abstract

PURPOSE:To perform comfortable driving by switching periodically among the selected direction and other blow out directions except for the defrost direction until the heater capability is increased to a predetermined value or more and the room temperature reaches a predetermined value provided that the blow out directions other than the defrost blow out direction are selected. CONSTITUTION:When an ignition switch 31 is turned on and a mode switch 23 is selected at a foot mode, the blow out mode becomes a defrost mode if a water temperature switch 18 is at a predetermined temperature or less, and a fan 2 is operated at a low speed. Next, when the water temperature is increased to the predetermined value or higher and before the room temperature reaches the predetermined value of a temperature switch 19, the blow out mode is changed periodically among the foot mode, high level mode, or face mode, thus increasing the room temperature rapidly. When the room temperature reaches the predetermined value, a timer relay 30 is turned off and the blow out direction is fixed at the foot mode. Accordingly, the glass frost is prevented and also the room temperature is increased uniformly and rapidly, thereby safe and comfortable driving can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air conditioner for an automobile, and more particularly to an air conditioner for an automobile equipped with means for automatically controlling the direction of air flow inside the vehicle.

Conventionally, for example, you can use a cooling device to cool the air or use outside air directly! In an automobile air conditioning system, the cooled air is moderately heated with a heater (hereinafter referred to as a heater) that uses engine cooling water as a heat source, and then blown into the car to keep the inside of the car at an appropriate temperature. In order to do this, the cold air flowing into the heater is appropriately heated by the heater, the blowing temperature is controlled, and the air volume is increased or decreased.

As a method of controlling the amount of heating in the heater, there is a method of controlling the flow rate of hot water flowing into the heater, and a method of controlling the amount of cold air flowing into the heater by bypassing the heater and the amount of hot air passing through the heater and being superheated. Adjust with air ice damper),
This cold and hot air is mixed downstream of the heater and brought to an appropriate temperature using an air mix damper control method, but recently an air mix damper control method has become common.

Naturally, in the warm summer season, the amount of heating by the heater is reduced (or zero) and the cooling device is controlled to blow out cold air cooled by the cooling device.

During heating in winter, the cooling system is stopped, and the cold air is heated by a heater and blown into the interior of the vehicle.The direction of the air blowing into the interior of the vehicle varies depending on the environmental conditions. In the season, the air blows in both the upper and lower part of the car (hereinafter referred to as pie level mode), and in the winter, the air flows in the foot part direction (hereinafter referred to as ``Tyy mode''), and on the windshield. Control is performed by manipulating each woodcutter Δ so that the air blows in the defroster blowing direction (hereinafter referred to as defrost mode) at 6 o'clock with a weight or weight.

These controls are generally operated by the Suita temperature control section, the air volume control section, and the blowing direction control section, respectively, but recently there are some systems that perform these operations automatically.

The air U device constructed and operated in this manner has the following problems in winter. The temperature inside the car during winter φ h operation is slightly low, so the heater is operated at the maximum temperature and the maximum air volume, but since the heat source of the heater is engine cooling water, in the trench where the engine is warmed up, the heater is Since the temperature of the incoming water is low and the cold air is blown out with strong winds, and the blowing direction is in winter, the foot mode is used.These winds are blown out at the feet of the passengers, giving the occupants a very sick feeling. . Furthermore, since the windshield surface is also low in humidity, the occupant's breath may cause cracks on the windshield or side glass.
This will filter the field of view. In order to solve this problem, the fan is stopped or slowed down to reduce the air volume until the engine water temperature rises and the heater capacity increases, and the Suita direction is operated in r frost mode. The air volume is adjusted again.

In addition, even if the engine water temperature rises and warm air is blown to the feet in foot mode, the upper part of the car remains cold, so [1]
Not enough to feel it. In particular, I feel extremely cold when I touch the steering wheel and gear shift lever. For this reason, the blowing direction is set to Pilepel mode or Face mode to expel the cold air from the upper part, but if warm air is constantly blown from the upper part, the warm air will cause discomfort to the face, so it will cause discomfort to the feet. mode and pie level mode ti
), select to mode and face mode alternately until the inside of the car warms up! I! It is exploded. If the temperature inside the car approaches the desired temperature, it will be stably used in foot mode.

In this way, when starting the heater in winter, complicated operations are required depending on the heater steering force and changes in the temperature inside the vehicle, and the operation is complicated and rarely poses a risk of interfering with safe driving. .

The present invention was proposed in view of the above-mentioned circumstances, and enables comfortable driving and safe driving by automating the operation of the air distribution hand plate that controls the direction of airflow inside the car in accordance with the heater capacity and the inside temperature of the car. An object of the present invention is to provide an automobile air conditioning device capable of providing airflow, and the automobile air conditioning device according to the present invention has a heater for emptying the inside of the vehicle, and the air is passed through the heater to a plurality of air outlets. a means for distributing air to the vehicle, an operation switch for selectively operating the first stage of the air distribution l1f, a @1 detector for detecting the capacity of the heater, and a second detector for detecting the temperature inside the vehicle.
and when a blowing direction other than the side blowing direction is selected by the operation switch, the blowing direction is set to the defroster direction in the trench where the first detector operates at a predetermined level or higher, and the blowing direction is set to the defroster direction. When the first detector is activated, the blowing direction is changed to at least one blowing direction other than the selected blowing direction and the defroster direction until the temperature inside the vehicle rises to the operating temperature of the second detector. The air distributing means may be selectively switched between two or more air blowing directions, and when the second detector is activated, the air distribution means may be controlled in one of nine air blowing directions selected by the operation switch. Next, one embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic diagram showing the system configuration of an embodiment of the present invention, FIG. 2 is a diagram showing an example of the control circuit in FIG. 1, and FIG. BE is a diagram showing another example of the control circuit in FIG. 1. It is.

In Fig. 1, the intake air of the blower 2 is selected from either inside air or outside air using the inside/outside air switching device/example 1, and the cooling device IK is blown and cooled by the operation of the air blowers 41 & 2. Cold wind is air-ken, Kusujiun AjK
The hot air that has passed through the heater 4 and has been superheated is divided into the cold air that bypasses the heater 4, and is mixed downstream to reach an appropriate temperature, which is then sent to the upper car interior air outlet (), -s air outlet) 1 or the car interior foot air outlet. The air is blown into the vehicle from either or both of the air outlet ( ) 7 and the differential star air outlet 8 . The inside/outside air switching man/#1 is operated by a negative pressure actuator 11 that reciprocates under negative pressure and a solenoid valve 11 that supplies negative pressure or atmospheric pressure to this actuator. Applying air pressure to the actuator,
Menno 41 is set as the outside air introduction side. Therefore, when the solenoid pulp is operated, the men/41 becomes the inside air introduction side. Similarly, the face air outlet 6 is operated by the negative pressure actuator 11 to the 3rd position (), -, -, side, and foot defroster position). The two-official pressure actuator 11 is operated by the solenoid valve 14 and IJ.
When both are OFF, the pie level mode is set. When the solenoid pulp 14 is on (negative pressure supply), the face mode is set. When the solenoid pulp 15 is on and the foot is turned on, the defrost mode is set. Furthermore, Menno Parable 10 is a negative pressure actuator 11.
and solenoid pulp 1# Open foot outlet 1 (solenoid/4 lube 16 on) or defroster outlet 8
is open (lenoid pulse flσ is off). The operation of these arms and the operation status of the solenoid pulp are summarized in the table below.

These operations are performed using the mode switch 21 provided on the operation panel 21. The inside/outside air switch 24 is selectively operated.

(However, the control in foot mode will be described further later.) The temperature switch 18 that detects the engine water temperature supplied to the heater 4 has a built-in switch that turns off at temperatures below 50"C and turns on at temperatures above 50"C. The temperature switch 19, which detects the temperature inside the car, turns on at temperatures below 15°C, for example.
It has a built-in switch that turns off when the temperature exceeds 15℃. In addition, the blower 2, air pump, and vacuum cleaner 5 are controlled by temperature control AI.
o, the temperature inside the vehicle is automatically controlled to a predetermined temperature. Next, the operation of the embodiment of the present invention will be explained based on FIGS. 2 and 3. The parts will be explained using the same reference numerals.

Power supply J1 ignition switch 1 for starting the engine
When 1 is turned on, the relay 27 is energized and the 7th contact j1 is closed. Fan switch inside operation panel 21; is
o Depending on selection, blower x OFF (H), AUTO
(self 1sb), L (<mm), and H (high speed) are selectively operated. In the AUTO position, blower 1 is 22! Automatically controls depending on the condition.

In parallel with the blower 2, an air conditioner switch 26 and a relay 29 for controlling the intoxication device fIItJtIIIllI are formed in the operation panel 21. Air conditioner switch 25
When turned on, the combinator S2 constituting the cooling device J is operated via the contact 29 of the relay 29.

The face, pie level, foot, and defroster modes are selected by the switch 23. When the inside/outside air switch 24 is turned on, the solenoid pulp 17 is turned on, supplying negative pressure to the negative pressure actuator 11 and introducing inside air.

Mode switch 2S or 7 mode (FOOT position) o
In conjunction with this, the foot mode switch IC changes to its contact type and operates the timer relay 5oVc. For example, the timer relay
(On when timer relay J0 is off) Turns contact f (on when timer relay JO is on) on and off. The timer relay 30 is further constructed so that the timer relay 8o is activated when the vehicle interior temperature switch 1# is turned on (when the interior temperature of the vehicle is low). Furthermore, a water temperature switch 18 is placed in parallel with the foot mode switch ztiq) contact C (off when in foot mode) circuit, and the temperature is controlled by each switch, and when the relay 11 is off,
The contact 1141 of 28m and the 18 door are opened. Therefore, the b side of the contact point 28 is turned on, and the solenoid pulp 15 is energized, and the solenoid pulp 4 is energized via the negative pressure actuator 11.
9 is activated rFrost IIK. At the same time, contact JJB is opened, so if the fan switch 22 is in the AUTO position, a low speed signal is input to the temperature controller 20 via the Meio PDI, and the blower 2 is operated at low speed ('1 rotation).Water temperature switch 11 When P turns on due to a rise in water temperature, relay 2
8 is energized, its contacts 21 and JJB are switched to IO, and the machine 1 operates automatically and operates at high speed if the temperature inside the vehicle is low.

At the same time, contact 2I becomes aQ, so mode switch 2
When the temperature inside the car is low, the rounding timer relay 10, which turns on the inside temperature switch 1#, operates and periodically switches the contact 1# to the - side and f.
When it is in the @ position, the solenoid pulp 16 and solenoid pulse flLi are operated to set the foot mode blowout, and when it is in the tfaKTo position, the solenoid pulp 16 (D only) is operated in the example of Fig. In the example shown in FIG. 3, the solenoid pulp 14
Activate only the face and blow out. Therefore, the blowing direction changes periodically due to the operation of the timer relay 10. When the temperature inside the car rises and the temperature switch 19 opens, the timer relay 160 stops operating, its contact point zoh is deflected to 1, and the blowing direction is fixed in the foot mode.

After this, the blowout shade is selected at peak-dosui-te and stabilizes in a good condition. Note that DJ and DJ shown in FIGS. 2 and 83 are diodes for preventing rotation, respectively.

As described above, in one embodiment of the present invention, the engine starting ignition switch, switch switch, and deS1 are turned on, and the mode switch 2J is set to 7. When the default mode is selected, when the engine water temperature is below a predetermined temperature, the blowing mode becomes the defrost mode and the blower is operated at low speed. When the engine coolant temperature rises above a predetermined temperature, the inside temperature of the car rises to a predetermined temperature. (Figure 1g3) changes periodically, causing the temperature inside the car to rise rapidly. When the temperature inside the vehicle exceeds a predetermined temperature, the timer relay 30 is turned off and the blowing direction is fixed to the foot mode.

Also, when you select the mode switch 2J to another mode and run,
These automatic control functions are stopped and 1 is selected to operate in the 9-output mode.

Since the present invention is arranged horizontally as described above, the following effects can be achieved.

■ If you select the foot mode at the start when the outside temperature is low, such as in winter, the heater capacity will be sufficient.If you set the blowing direction to the differential p star in the trench, you can prevent cold air from blowing out to your feet, and the differential μ By blowing air to the star, it is possible to prevent the occurrence of -p on the windshield and side surfaces due to the occupant's breath.

■ Even if engine water temperature rises and engine power recovers, 1
．． When the temperature inside the car is low, the temperature inside the car can be raised uniformly and rapidly by changing the blowing direction from foot mode to pie level mode or from foot mode to face mode.

■ It is better to periodically vary the blowing direction.

If the constant pie level mode is used in the face mode, the hot air generated on the face can be prevented from causing discomfort.

■ When the temperature inside the car rises to a certain degree, by fixing it to the original O foot mode, the temperature distribution inside the car of cold head and hot feet can be achieved, and comfortable heating operation can be performed.

■ Automating the operation of these modes can contribute to safe driving. ■ The control of the blower, air structure, and damper can be performed manually or automatically, but for example, if the blower, air structure,
The function of the present invention becomes more effective if the control of the damper is automated.

Although one embodiment of the present invention has been described above, the present invention is not limited to the embodiment of the queen. The present invention can also be applied to these devices, and the effects are the same. Furthermore, the engine water temperature rises and switches periodically between foot mode and pie level mode.
,.

In addition, it is also possible to alternately change the foot mode and face mode, or the foot mode and pie level and face mode. In addition, although the top of the top of the top has a /-cential configuration, each function can also be configured with an electronic circuit (logic element or microcomputer). In particular, not only heaters that use engine cooling water as a heat source,
It goes without saying that even if the heater is an electric heater, engine exhaust heat, or a heat pump type cooling device, the function of the water temperature sensor in the above embodiment may be replaced by a switching means that detects when the heater capacity is insufficient. .

In summary, according to the present invention, there is provided a heater for heating the interior of the vehicle, means for distributing air to a plurality of air outlets through the heater, an operation switch for operating the air distribution means, and an operation switch for operating the air distribution means. a first detector that detects the capability of the heater;
and a second detector for detecting the temperature inside the vehicle, and when a blowing direction other than the side defroster blowing direction is selected by the operation switch and the blowing direction is changed until the first detector operates at a predetermined level or higher. is the defroster direction, and when the tenth detector is activated, the blowing direction is changed between the blowing direction selected above and the rp star direction until the temperature inside the vehicle rises to the operating temperature of the second detector. , and when the second detector is activated, the air distribution means is switched in the blowing direction selected by the operation switch. An air conditioner for an automobile that is equipped with a control means to automate the operation of an air distribution means that controls the air flow direction in a vehicle according to the heater capacity and the temperature inside the vehicle, thereby enabling comfortable driving and contributing to safe driving. Because we provide equipment,
The developed fPIFi is extremely useful for the industry.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing a system configuration of an embodiment of the present invention, and FIG. 2 is a diagram showing an example of a control circuit in FIG. 1. FIG. 3 is a diagram showing another example of the control circuit in FIG. 1. 2...Inside and outside air switching damper, 2...Blower, S...
Cooling device, 4...Heater, 6...Air mixer/4.6...Inside upper air outlet, 1...Inside footwell outlet, 8...Defroster outlet, 9.10... ·group/
zl...Two-stage negative pressure actuator, 12...Negative pressure actuator, 13...Negative pressure actuator, 14.1
5゜16.17... Solenoid valve, 18... Temperature switch, 19... Temperature switch, 20... Temperature controller, 21... Operation normal, 22... Fan switch. 23...Mode switch, 24...Inside and outside air switch, 260 Air conditioner switch, 26...Foot mode switch, 27...Relay, J7A...Contact, 28
...Relay, 111, :111B...Contact, 29
...Relay, Jj? A... Contact, 30... Timer relay, 30A... Contact, 31... Eve Nishi,
Nsui, te, 32...comple, s, jJ...power.

Claims (1)

[Claims] It has a heater for air-conditioning the interior of the vehicle, means for distributing air to a plurality of outlets through the heater, an operation switch for selectively operating the air distribution means, and a rattan for detecting the heating capacity. 1 and a iris 2 detector for detecting the temperature inside the vehicle, and when a blowing direction other than the cylinder blowing direction is selected by the operation switch, the first detector detects a predetermined level. The blowing direction is set to the defroster direction until the above operation occurs, and when the first detector is activated, the second detector is activated.
0 The blowing direction is selected as described above until the temperature inside the vehicle rises to the operating temperature of the detector and at least one blowing direction other than the defroster direction is cycled. 114 for an automobile, comprising means for controlling the air distribution means in a blowing direction selected by a first operation switch when the second detector is activated; Device.