JPH0492713A - Air-conditioning device for automobile - Google Patents

Abstract

PURPOSE:To improve amenity of passengers on both sides by independently controlling side bent discharge temperatures on both sides based on a reference temperature, being the temperature of air discharged through a central vent discharge port, so that, in the portion, sensitively influenced by the change of solar radiation and an open air temperature, of a vehicle, the influence is erased according to a heat load. CONSTITUTION:Conditioned air the temperature of which is regulated by an air mix door 6 is branched to guide the branched air to a central vent discharge port 30a and side vent discharge ports 30b and 30c on the right side and the left side. In this device, first duct means 1a and 1b to mix cold air from the upper stream of an air mix door 6 and the downstream of a heating device 4 in conditioned air flowing through the side vent duct 30b on the right side are provided. Second duct means 1c and 1d to mix cold air from the upper stream of the air mix door 6 and hot air from the downstream of the heating device 4 in conditioned air flowing through the side vent duct 30c on the left side are provided. Control door means 10a and 10b to regulate a mixture ratio between cold air and hot air are arranged to the respective duct means.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air conditioner for an automobile, and more particularly to an air conditioner for an automobile that independently adjusts the temperature of air blown out from each outlet.

[Conventional technology]

Conventional air conditioners for automobiles include, for example, Japanese Patent Application Laid-open No. 58-2
As described in Japanese Patent No. 2710, the harmonized air whose temperature has been adjusted by an air mix door is divided and guided to a plurality of outlets, and the cool air from upstream of the air mix door is mixed into the harmonized air of each outlet. A branch duct is provided, and a distribution valve for adjusting the mixing ratio of cold air is provided at the opening of the branch duct to independently adjust the temperature of the hot air blown out from each outlet.

Also, as described in Japanese Patent Application Laid-Open No. 1-247110,
A plurality of air introduction passages each having a hot air passage passing through the heater core and a cold air passage bypassing the heater core are provided corresponding to the plurality of air outlets, and each of these air introduction passages has a mixing ratio of hot air and cold air. There are also car air conditioners that are equipped with an air mix door to adjust the air.

[Problem to be solved by the invention]

However, the device described in Japanese Patent Application Laid-Open No. 58-2271-0 is configured to mix only the cool air upstream of the air mix door into the harmonized air, and cannot blow out a higher temperature than the harmonized air. Therefore, in order to make the air temperature from one outlet, for example, the outlet of the right side vent, higher than the harmonized air, the air mix door must be operated to make the harmonized air flow body high. In this case, the air temperature at other outlets such as the center vent and left side vent will also rise. Therefore, even if the distribution valve is operated to increase the amount of cold air in order to restore the air temperature to the original temperature, a temporary rise in temperature is unavoidable, and as a result, the central vent, right side vent, and left It is not possible to independently and finely adjust the temperature of the air blown out from the side vents. It must also control the majority of air mix doors and distribution valves,
There is also the problem that control becomes complicated.

Furthermore, the device described in Japanese Patent Application Laid-Open No. 1-247110 is
A common air introduction path is provided for the right side vent and the left side vent, and the temperature of the air blown from the right side vent and the left side vent cannot be adjusted independently. In addition, an air mix door is installed in each air introduction path to independently adjust the air temperature, and it is blown out from each duct as harmonized air, so the entire amount of air needs to be guided to each air introduction path, making the structure complicated. becomes. Furthermore, since the air temperature is controlled independently of other blown air, it is difficult to perform delicate control.

An object of the present invention is to provide an air conditioner for an automobile that can independently adjust the temperature of air blown from a central vent, a right side vent, and a left side vent from a high temperature to a low temperature.

Other objects of the invention include a central vent, a right side vent,
To provide an air conditioner for an automobile that can easily independently adjust the temperature of air blown out from a left side vent.

[Means to solve the problem]

In order to achieve the above object, the automotive air conditioner of the present invention divides the conditioned air whose temperature has been adjusted by the air mix door to the central vent outlet, the right side vent outlet, and the left side vent outlet. The following configuration has been added based on the configuration that leads to the following: A first system that mixes cold air from upstream of the air mix door and warm air from downstream of the heating device into the harmonized air flowing through the right side vent duct. Duct means; a second duct means for mixing cold air from upstream of the air mix door and warm air from downstream of the heating device into the harmonized air flowing through the left side vent duct; a first control door means for adjusting the mixing ratio of the hot air and the hot air;
second control door means arranged in the duct means for adjusting the mixing ratio of cold air and hot air;

Further, in the automotive air conditioner of the present invention, the temperature of the air blown out from the central vent outlet is set as a reference temperature, and the target temperature of each of the air blown out from the right side vent outlet and the left side vent outlet is set. , further comprising control means for controlling the drive of the control door means so that these target temperatures are obtained.

[Effect]

The present invention is based on the configuration of a reheat air mix method, in which harmonized air whose temperature has been adjusted by an air mix door is divided and guided to a central vent outlet, a right side vent outlet, and a left side vent outlet. The same harmonized wind as the central vent duct whose temperature is controlled by the air mix door flows through the left side vent duct as the main harmonized wind. Cold air and hot air are also guided to the right side vent duct and the left side vent duct via the first and second duct means and mixed into the main harmonic air. By adjusting the mixing ratio of the cold air and hot air using the first, second, and second control door means, the temperature of the harmonized air blown from the central vent outlet is independently controlled by the temperature of the air blown out from each side vent outlet. be done.

For example, in the summer, cold air is introduced from the air mix door upstream to both the left and right side vents to lower the air temperature at the center vent outlet, and in the winter, warm air is introduced from the downstream side of the heating device. and control it to a high level. In addition, when there is solar radiation in the middle of the season or winter, the side vent air temperature on the side where solar radiation enters should be set to the lowest temperature, then the central vent air temperature should be set to the lowest temperature, and the side vent air temperature on the side without solar radiation should be set to the highest temperature. In order to maintain the outlet air temperature, the standard central vent outlet air temperature is controlled by the air mix door, and the side vent outlet air temperature on the side exposed to sunlight is adjusted to the same air temperature as the central vent outlet air temperature. The side vent air temperature on the side not exposed to sunlight is independently adjusted to the same air temperature as the central vent air temperature by introducing hot air downstream of the heating device by the first and second control door means, respectively.

In addition, in the pie level mode, the air mix door adjusts the temperature of the air blown from the feet and the temperature of the air blown from the central vent, and the first and second control door means independently control the temperature of the air blown from the left and right side vents. , to maintain a comfortable upper and lower indoor temperature distribution.

As described above, based on the air temperature blown from the center of the vehicle (center vent outlet), which is less affected by heat load, air conditioning at the side of the vehicle, which is more affected by heat load fluctuations, is adjusted according to the heat load. Independent control from high to low temperatures improves passenger comfort.

Further, since the temperature of the air blown out from the right side vent outlet and the left side vent outlet is adjusted based on the temperature of the harmonized air blown out from the central vent outlet, control becomes easy.

Furthermore, since the cold air and hot air from the first and second duct means are used only for adjusting the air temperature, a small flow rate is required, and the first and second duct means can be made small in size. Therefore, the structure of the conventional glue heat air mix method can be used without major modification, making it easy to manufacture.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 8.

The automotive air conditioner of this embodiment uses an on-vehicle microcomputer that executes digital arithmetic processing using software according to a predetermined control program.

In FIG. 1, 1 is a duct casing that encloses each device of an air conditioner, and a blower motor 2, an evaporator 3, and a heater core 4 are installed in the duct casing 1 in that order in the direction of air flow. An air inlet 2a is provided in a portion facing the blower motor 2, and an intake box 2b equipped with an intake door 5 for selectively introducing outside air or inside air is attached to this air inlet 2a. Air mix door 6 adjacent to heater core 4
is arranged, and the air mix door 6 adjusts the mixing ratio of the cold air bypassing the heater core 4 and the warm air passing through the heater core 4, thereby adjusting the temperature of the air blown into the vehicle. A hot air closing door 6C is disposed between the hot air passage 6a and the main passage 6b on the downstream side of the heater core 4, and completely blocks the main passage 6b from the heater core 4 in the illustrated full cool mode.

The harmonized air whose temperature has been adjusted by adjusting the mixing ratio of cold air and hot air with the air mix door 6 passes through the main passage 6b and reaches the center vent outlet 11a1 of the duct casing 1, the right side vent outlet 11b1, and the left side vent outlet. 11c, the differential air outlet lid, and the right floor air outlet and left floor air outlet (not shown). A center vent door 7a, a right side vent door 7b, a left side vent door 7c, a defroster door and a floor door (not shown) are arranged in these air outlets, and the air outlet can be adjusted according to the purpose by opening and closing these mode doors. It is a choice of exit. Furthermore, as shown in FIG. 2, these air outlets are connected to a central vent duct 30a, a right side vent duct 30b, a left side vent duct 40c, and a defroster duct and a floor duct (not shown).
A central vent outlet, a right side vent outlet, a left side vent outlet, a differential outlet, and left and right floor outlets are provided at the tip of each duct to blow out harmonized air into the vehicle interior.

As can be clearly seen from FIGS. 2 and 3, the duct casing 1 also includes a cold air bypass passage 1a that guides the cold air from upstream of the air mix door to the right side vent duct 30b, and a cold air bypass passage 1a that guides the cold air from upstream of the air mix door to the right side vent duct 30b, and A warm air bypass passage 1b that guides air to the right side vent duct 30 and merges with the cold air bypass passage 1a, a cold air bypass passage IC that guides cold air from upstream of the air mix door to the left side vent duct 30c, and a downstream of the heater core 4. A hot air bypass passage 1d (see FIG. 3) is provided which guides the hot air from the left side vent duct 30c to the cold air bypass passage IC and merges with the cold air bypass passage IC. The confluence of the cold air bypass passage 1a and the hot air bypass passage 1b and the cold air bypass passage IC
Temperature control doors 10a and 10b for independently controlling the blowing temperatures of the right and left side vents are arranged at the confluence of the hot air bypass passage 1d and the cold air bypass passage 1d. Passage 1a.

The air volume of the cold air passing through the IC and the hot air passing through the hot air bypass passages 1b and 1d is adjusted. Temperature control door IQa, 10b
The downstream side thereof communicates with the right side vent duct 30b and the left side vent duct 30c, respectively.

Returning to FIG. 1, 14 is a single-chip microcomputer that executes software digital calculation processing according to a predetermined control program, and is connected to a several-megahertz crystal oscillator 15 and receives power from the on-board battery. becomes operational. This microcomputer 14 has a central processing unit (CPU) that sequentially reads out an automatic control program with predetermined calculation procedures and executes the corresponding calculation processing, and a reference clock for the various calculations described above, together with a crystal oscillator 15. A clock generator that generates pulses and an input/output unit (I1) that adjusts the input/output of various signals.
0) A one-chip large-scale integrated circuit (LSI) consisting of a circuit section as a main part.

The microcomputer 14 includes an outside air sensor 16, an in-vehicle sensor 17, a solar radiation sensor 17a1, and a differential air temperature sensor 1.
8. Detection signals from the center vent air temperature sensor 19a1, the right side vent air temperature sensor 19b1, the left side vent air temperature sensor 19c, and the floor air temperature sensor 20 are input as digital signals via the A/D converter 21. be done.

The center vent outlet air temperature sensor 19a is installed in the center vent duct 30a, the right side vent outlet air temperature sensor 19b is installed in the right side vent duct 30b, and the left side vent outlet air temperature sensor 19c is installed in the left side vent duct 30c.
are located inside each. Furthermore, setting signals from the temperature setting device 22, mode setting device 23, and air volume setting device 24 are inputted to the microcomputer 14 as digital signals.

The microcomputer 14 processes various calculations and judgments based on the above-described detection signals and setting signals, and processes the blower motor 2, intake door 5, air mix door 6, hot air closing door 5c, center vent door 7a, and right side vent door. 7b, left side vent door 7c, defroster door (rgJ not shown), floor door (not shown), and temperature control doors 10a and 10b.

The intake door 5 is driven by an actuator 25, the air mix door 6 and the hot air closing door 6C are driven by an actuator 26, the center vent door 7a, and the right side vent door 7b.

The left side vent door 7C, a defroster door and a floor door (not shown) are driven by an actuator 27 via a link mechanism 28. Further, the blower motor 2 is driven by a drive circuit 29, and the temperature control doors 10a and 10b are actuated by an actuator 31a.

31b.

The actuator 25 receives and latches an inside/outside air command signal from the microcomputer 14, and switches between inside and outside air by operating the intake door 5. The actuator 26 receives and latches a command signal for controlling the opening degree from the microcomputer 14, and adjusts the opening degree of the air mix door 6 according to the command signal to control the blowing temperature. Further, the warm air closing door 6C is operated in conjunction with the air mix door 6 to control communication between the hot air passage 6a and the main passage 6b. The actuator 27 receives and latches the opening command signal from the microcomputer 14, and the link mechanism 28 operates each of the air outlet switching doors 7a, 7b, 7c, as well as a defroster door and a floor door (not shown).
Select the conditioned air outlet. The drive circuit 29 receives a rotation command signal from the microcomputer 14 and latches it.
Then, the rotation speed of the blower motor 2 is continuously controlled according to the command signal. The operation of the air conditioner having the above configuration is already known from, for example, Japanese Patent Publication No. 63-37727, and the explanation thereof will be omitted here.

Further, the actuators 31a, 31b receive and latch a command signal for opening control from the microcomputer 14, and respond to the command signal to control the temperature control doors 10a, 1, respectively.
Adjust the opening degree of 0b. At this time, if the opening ratio of the hot air bypass passage 1b is made larger than the opening ratio of the cold air bypass passage 1a using the temperature control door 10a for the right side vent, the warm air can be added to the harmonized air whose temperature has been adjusted by the air mix door 6. It is possible to make the temperature of the air mixed in, passed through the right side vent duct 30a, and blown into the vehicle interior higher than the temperature of the air blown out from the center vent.

Similarly, in the temperature control door 10b for the left side vent, the opening ratio of the cold air bypass passage IC is set to 1 for the hot air bypass passage 1.
If the opening ratio is increased from the opening ratio of d, cold air will mix into the harmonized air whose temperature has been adjusted by the air mix door 6, and the temperature of the air passing through the left side vent duct 30b and blowing into the car will be higher than that of the air blowing out from the center vent. It can also be lowered to low temperatures.

As described above, by operating the temperature control doors 10a and 10b, the temperature of the air blown into the vehicle from the right and left side vent outlets can be independently adjusted from high to low.

In FIG. 1, the hot water control system connected to the heater core 4 and the refrigeration cycle control system connected to the evaporator 3 are not shown because they are not necessary for explaining this embodiment.

Next, an embodiment of the method for controlling the air conditioner described above will be described.

FIG. 4 is a flowchart showing the arithmetic processing of the automatic control routine which is the automatic control program. This arithmetic processing is performed by the microcomputer 14. Note that this flowchart only shows the outlet air temperature control related to the main points of the present invention, and since the above-mentioned known documents can be referred to for other control functions, they will be omitted here.

Now, when the microcomputer 14 enters the operating state, it executes the arithmetic processing of the illustrated air conditioning control program at a cycle of several hundred mm@eC. First, in step 101,
Signal Ta from outside air sensor 16, Signal Tr from inside sensor 17, Signal Z from solar radiation sensor 17a, Signal Tdd from def duct sensor 18, Signal TduC from center vent air temperature sensor 19a, Right side vent air temperature sensor. Signal TduR1 from left side vent air temperature sensor 19c, Signal Tdl from floor air temperature sensor 20, Setting signal Ts from temperature setting device 22, Setting signal M from mode setting device 23.
and the setting signal Q from the air volume setting device 24 are input, and the process proceeds to step 102.

In step 102, the blowout mode is determined based on the data input in step 101. In making this judgment,
If the setting signal M from the mode setting device 23 specifies a mode, an opening command signal is sent to the actuator 27 to select the mode, and the outlet for the conditioned air is selected. If the setting signal M is in automatic mode, the outside air sensor 16
Based on the signal T8 from , the mode is selected as shown in FIG. 5, and the outlet switching is executed. That is, the vent mode is selected in the summer when the outside temperature is high, the heater mode is selected in the winter when the outside temperature is low, and the pie level mode is selected in the intermediate period.

Next, in step 103, a target outlet temperature of the vent outlet air temperature is calculated. The calculation is performed, for example, by the method shown in FIG. 6 using the signal Ta from the outside air sensor 16 and the signal 2 from the solar radiation sensor 17a. In other words, using the center vent air temperature as a reference, the target air temperature for the side vents is set lower as the outside temperature becomes higher in the summer, and higher as the outside temperature becomes lower in the winter, taking into account the radiant heat from the side walls of the vehicle. Set the temperature. Further, even if the outside temperature is the same, the target air temperature is set so that the side vent air temperature on the side where there is no sunlight is high and the side vent air temperature on the side where there is sunlight is low. That is, the solar radiation sensor 17a detects the direction of solar radiation incidence, and reduces the side vent outlet air temperature on the side where solar radiation enters in accordance with the amount of solar radiation. A method for detecting the direction of incidence of solar radiation is described, for example, in Japanese Patent Application No. 51-286810. An example of this will be explained later. Further, the correction of the blowing air temperature with respect to the amount of solar radiation varies depending on the distance between the occupant and the window, the area, etc., and can be expressed as -(A/660 XZ).

Here, A is a constant depending on the vehicle, and Z is the solar radiation sensor 1.
7a shows the amount of solar radiation detected by 7a.

As described above, the center vent and side vent independently control the outlet air temperature in consideration of the radiant heat from the vehicle side wall, and
The temperature of the air blown out from the right and left side vents is independently controlled depending on whether there is sunlight or not, improving the sense of comfort for passengers.

Finally, in step 104, the setting signal Q from the air volume setting device 24 is used to calculate the air volume to control the air volume.

In addition, in the calculation of the target outlet temperature above, the outlet temperature was independently controlled for the left side vent and the right side vent based on the amount of solar radiation, but as other parameters, a temperature setting device exclusively for the passenger seat was used. In a vehicle, this temperature setting may also be used. That is, the temperature setting device 22 shown in FIG. 1 functions as a temperature setting device for the entire vehicle, and the temperature setting device exclusively for the passenger seat sets the temperature of the air blown from the left side vent on the passenger seat side. An output is generated through arithmetic processing by the microcomputer 14 so that there is no deviation between the temperature set value T douL set and latched by this passenger seat temperature setting device and the detected value T daL of the left side vent duct sensor 19c. Then, the control door 1 is opened by the actuator 31b.
Controls 0b. In this way, in addition to changes in the outside temperature and the direction of incidence of solar radiation, the air temperature of each outlet can be independently controlled to obtain the optimal air temperature according to the passenger's preferred temperature. can.

Next, a method of calculating a target air temperature based on the direction and amount of solar radiation by the solar radiation sensor and the temperature setting of the occupant will be explained in more detail.

FIG. 7 shows an example of the solar radiation sensor 17a used in the air conditioner of this embodiment. FIG. 7(a) shows the solar radiation sensor 17a.
It is a top view of the light receiving element 17h1 which detects the amount of solar radiation from the right side and the light receiving element 1711 which detects the amount of solar radiation from the left side.
It is equipped with a light receiving element 17g that detects the amount of solar radiation from the front. These light receiving elements are mounted at an inclination angle of 20° with respect to the lower surface on which the sensor is mounted, as shown in FIGS. 7(b) and 7(c). Note that this mounting angle may be any other angle.

Next, the principle of detecting the direction of incidence by the solar radiation sensor 17a will be explained.

If it is assumed that the light is incident from the right at an angle of 01 and from the front at an angle of θ2, the result will be as shown in FIGS. 8(a) and 8(b). From FIG. 8(a), if the amount of solar radiation is Zm, the amount of solar radiation detected by the light receiving elements 17h and 17i is Z ml, Z rn2
is expressed by the following formulas (1) and (2).

Zml=Zm −cos (20−θl) −(
+) Zm2=Zm-coS(20+θI) −(
2] Also, from FIG. 8(b), the detected solar radiation amount Zm3 of the light receiving element 17g is expressed by the following equation (3).

2m3=Zm-cos(20-θ2)
- (3) From the above equations (1) to (3), the solar radiation amount Zm, the left-right direction incident angle, and the forward direction incident angle θ2 can be determined.

Next, how to obtain the target blowout temperature of each blowout port will be explained. Td is the target blowout temperature for each of the left side vent, right side vent, and center vent.

Let L, TdoR, and TdoC be calculated using the following formulas.

TdoL = f d (Ta), -Kxv・Zm
L+Ks (TSL-25)+KpΔT r −=
(4) TdoR= f d (Ta) R−Kxu
@ZmR+Ks (TSR-25) 10KpΔT r
−(5) TdoC== f d (Ta) c−
Kxu-ZmC+Ksf(TSL+TSR/2)-25
1+KpΔTr...(6) Here, f d (Ta) L, R, C are the blowout temperature control equations when the outside air temperature changes shown in Fig. 6, and KHI is the equation (1
) - (3) The solar radiation correction coefficients determined from the results of previously verifying whether the amount of solar radiation and the direction of solar radiation have the same effect on the interior of the vehicle, TSL and TSR are the left and right temperature setting values, KS is the temperature setting correction coefficient, △T+ is the target room temperature and in-vehicle sensor 17
The deviation from the detected temperature, Kp, is an indoor temperature control correction coefficient.

The target air temperature of air blown from each air outlet obtained from the above equations (4) to (6) and the air temperature sensor 19a provided at each air outlet.
, 19b, 19c, the air mix door 6 and the temperature control doors 10a, 10b are adjusted so that the deviation thereof becomes O.
control automatically. This allows air to be blown out into the car window at a temperature that makes the occupants feel comfortable at all times.

〔Effect of the invention〕

With the air temperature blown out from the central vent outlet as the reference temperature,
The left and right side vent air temperatures are independently controlled to negate the effects of solar radiation and changes in outside temperature depending on the heat load on parts of the vehicle that are sensitive to changes in sunlight and outside temperature, optimizing the temperature and airflow distribution inside the vehicle with responsiveness. This allows both the left and right passengers to be comfortable. Furthermore, since the side vent air temperature is adjusted relative to the central vent air temperature, control is easy. Furthermore, since the cold air and hot air are used only for fine adjustment of the air temperature, the structure is not complicated and manufacturing is easy.

[Brief explanation of drawings]

1st F! ! :i is an overall view including the control system of an air conditioner for an automobile according to an embodiment of the present invention, FIG. 2 is an enlarged view of the main parts, and FIG. 4 is a flowchart showing the control details of the air conditioner, FIG. 5 is a diagram showing a method for determining the blowout mode in the control, and FIG. 6 is a method for calculating the target blowout temperature. FIG. 7(a), (b) and (C) are a top view, front view and side view of the solar radiation sensor, and FIGS. 8(a) and (b) are views showing the solar radiation direction, respectively. It is a figure explaining the principle of finding. Explanation of symbols 1a...cold air bypass passage (first duct means) 1b
...Hot air bypass passage (same) 1c...Cold air bypass passage (second duct means) 1d
... Hot air bypass passage (same) 3 ... Evaporator 4 ... Heater core (heating device) 6 ... Air mix door 10a ... Temperature control door (first control door means) 10b.
...Temperature control door (second control door means) 30a...Central vent duct 30b...Right side vent duct 30c...Left side vent duct Applicant: Hitachi, Ltd.

Claims (6)

[Claims] (1) an evaporator, a heating device that reheats the air cooled by the evaporator, and a cooling passage that bypasses the heating device;
An air mix door that adjusts the temperature of the blowing air by changing the mixing ratio of reheated hot air and cold air that bypasses the heating device, and a central vent that divides the harmonized air adjusted by the air mix door. In an air conditioner for an automobile, the air conditioner includes a central vent duct, a right side vent duct, and a left side vent duct that lead to an air outlet, a right side vent air outlet, and a left side vent air outlet, respectively. and a first duct means for mixing warm air from downstream of the heating device into the harmonized air flowing through the right side vent duct; cold air from upstream of the air mix door and warm air from downstream of the heating device. a second duct means for mixing the harmonized air flowing through the left side vent duct into the harmonized air flowing through the left side vent duct; a first control door means disposed in the first duct means for adjusting the mixing ratio of the cold air and the hot air; An air conditioner for an automobile, comprising: second control door means disposed in the second duct means for adjusting the mixing ratio of the cold air and hot air. (2) In the automobile air conditioner according to claim 1,
Using the temperature of the air blown out from the central vent outlet as a reference temperature, target temperatures for the air blown out from the right side vent outlet and the left side vent outlet are set, and the control door is adjusted so that these target temperatures are obtained. An air conditioner for an automobile, further comprising a control means for controlling driving of the means. (3) In the automobile air conditioner according to claim 2,
The control means includes a first sensor that detects an environmental change, a second sensor that detects the temperature of the blowing air in the central vent duct, and a third sensor that detects the temperature of the blowing air in the right side vent duct.
a fourth sensor that detects the blowout temperature in the left side vent duct, and a target temperature of the air blowing out from each vent outlet, including the target temperature, based on input signals from the first sensor. and a control circuit that outputs a signal for driving the actuator of the air mix door, the actuator of the first control door means, and the actuator of the second control door means so that the target temperature is obtained. Features of automotive air conditioning equipment. (4) an evaporator, a heating device that reheats the air cooled by the evaporator, and a cooling passage that bypasses the heating device;
an air mix door that adjusts the temperature of the blowing air by changing the mixing ratio of the reheated hot air and the cold air that bypasses the heating device; and a central vent that guides the temperature-adjusted harmonized air to the central vent outlet. In an air conditioner for an automobile, comprising a duct, and a right side vent duct and a left side vent duct that guide conditioned air to a right side vent outlet and a left side vent outlet, the cooling air from upstream of the heating device and the heating device are provided. a first duct means for directing warm air from downstream of the device to the right side vent duct; and a second duct means for directing cold air from upstream of the heating device and warm air from downstream of the heating device to the left side vent duct. duct means arranged in the first duct means for adjusting the mixing ratio of the cold air and hot air; and a first control door means arranged in the second duct means for controlling the mixing ratio of the cold air and the hot air. a second control door means for adjusting the mixing ratio; and a second control door means for controlling the temperature of the air blown from the right side vent outlet and the left side vent outlet so as to change the temperature of the air blown out from the right side vent outlet and the left side vent outlet, using the temperature of the air blown out from the central vent outlet as a reference temperature. and a control means for controlling driving of the second control door means. (5) In the automobile air conditioner according to claim 3,
The control means includes a first sensor that detects an environmental change, a second sensor that detects the temperature of the blowing air in the central vent duct, and a third sensor that detects the temperature of the blowing air in the right side vent duct.
a fourth sensor that detects the air outlet temperature in the left side vent duct; an arithmetic circuit that calculates a target temperature of the air blown out from each vent outlet based on an input signal from the first sensor; A control circuit for outputting a signal for driving an actuator of the air mix door, an actuator of the first control door means, and an actuator of the second control door means so as to obtain an air conditioner for an automobile. Device. (6) an evaporator, a heating device that reheats the air cooled by the evaporator, and a cooling passage that bypasses the heating device;
An air mix door that adjusts the temperature of the blowing air by changing the mixing ratio of reheated hot air and cold air that bypasses the heating device; and a central vent blower that divides the harmonized air adjusted by the air mix door. In an air conditioner for an automobile, the air conditioner includes a central vent duct, a right side vent duct, and a left side vent duct that lead to an outlet, a right side vent outlet, and a left side vent outlet, respectively. a first cold air passage leading to the right side vent duct; a second cold air passage guiding cold air from upstream of the air mix door to the left side vent duct; and a second cold air passage guiding hot air from downstream of the heating device to the right side vent duct. leading to the side vent duct and said first
a first hot air passage that merges with the cold air passage; a second hot air passage that guides hot air from downstream of the heating device to the left side vent duct and merges with the second cold air passage; a first control door that is disposed at the confluence of the first cold air passage and the first hot air passage and adjusts the opening ratio of each passage; and the second cold air passage and the second hot air passage. An air conditioner for an automobile, comprising: a second control door that is disposed at a confluence with a passageway and adjusts the opening ratio of each passageway.