JPH0525684B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an air mix door control device for an automatically controlled air conditioner installed in an automobile.

Prior Art As a conventional automatic control air conditioner, one with the structure shown in Fig.
(See Publication No. 130809). That is, the air conditioner main body 60
On the upstream side of the
An intake door 63 for opening and closing both the inlets 61 and 62 is provided, and a blower fan 64 is also provided. This blower fan 6
4, an evaporator 65 and a heater core 66 are arranged in sequence, and an air conditioner main body 6
A cold air outlet 67 and a warm air outlet 68 are provided at the downstream end of the
and is provided. A first air mix door 69 and a second air mix door 70 are pivotally supported on the upper and lower ventilation surfaces of the heater core 66, and each of the air mix doors 69 and 70 has an actuator 7.
1,72 are linked. The actuator 7
1 and 72 are connected to an output port of a control circuit C together with an actuator 73 linked to the intake door 63, and the input port of the control circuit C has a potentiometer for detecting the opening degree of both the air mix doors 69 and 70. Meters PM1 and PM2 are connected. In such a structure, the control circuit C
The internal microcomputer calculates the target cold air temperature based on physical environmental factors related to temperature, etc., and also calculates the target opening degree of the first air mix door 69 to obtain the target cold air temperature using a predetermined formula. do. On the other hand, the current opening position of the first air mix door 69 is detected by the potentiometer PM1, and by comparing it with the target opening position, the first opening position is detected.
It is determined in which direction the air mix door 69 should be moved from its current position. Based on this judgment result, the actuator 71 is actuated, and the opening degree of the first air mix door 69 that changes accordingly is detected momentarily by the potentiometer PM1.
Stored in RAM within the microcomputer.
Then, the current opening degree stored in the RAM and the target opening degree are periodically compared, and when the two opening degrees match, the actuator 71 is stopped by a control signal from the control circuit C based on a command from the microcomputer. , the first air mix door 69 stops at that position. In this way, the cold air blown out from the cold air outlet 67 is controlled to a desired temperature according to the set temperature, and the second air mix door 7 is similarly controlled.
By driving 0, the temperature of the hot air blown out from the hot air outlet 68 is also controlled to a desired temperature.

Problems to be Solved by the Invention However, in the case of such conventional devices, the current opening degrees of the air mix doors 69, 70 are detected, and the detected current opening degrees are compared with the calculated target opening degrees. Based on the result, the actuators 71 and 72 linked to the air mix doors 69 and 70 are controlled, so the potentiometer PM is activated to detect the current opening degree.
1. It is essential to use PM2. For this reason, not only is there a cost disadvantage in that expensive potentiometers PM1 and PM2 are required for each air mix door 69 and 70, but also when there is an installation error in the heater core 66 or air mix door 69 and 70, A numerical error occurs between the actual opening degrees of the air mix doors 69, 70 relative to the heater core 66 and the opening degrees detected by the potentiometers PM1, PM2.
As a result of executing control by using the value with an error detected by PM2 as the actual opening degree, the air mix door 6
The actual opening of 9,70 could not match the target opening,
It was difficult to properly control the blowing temperature.

The present invention has been made in view of such conventional problems, and provides an air mix door control structure for an automatically controlled air conditioner that makes it possible to properly control the outlet temperature without using a potentiometer. It is something.

Means for solving the above problems In the present invention for solving the above problems,
A detection means for detecting a physical environmental factor related to temperature and outputting it as an electrical signal, and a setting means for sending out an electrical signal in accordance with a setting operation by a passenger for setting a physical environmental factor in the vehicle interior related to temperature. an outlet temperature sensor for detecting the current actual outlet temperature of the harmonized air blown out from the outlet of the air conditioner main body; A target air temperature calculation circuit that determines whether or not the target air temperature calculated by the target air temperature calculation circuit is the first calculation after starting the air conditioner, and the target air temperature calculated by this target air temperature calculation circuit is the second or subsequent calculation. Based on the determination result, calculate the difference between the calculated target air temperature and the previously calculated target air temperature, and determine whether this difference is greater than or equal to a preset target air temperature change value. Based on the determination result that the temperature difference calculated by the target outlet temperature change judgment circuit and this target outlet temperature change judgment circuit is less than the set target outlet temperature change value, the outlet temperature is set in advance for the time from the air mix door operation command to the present. an air mix door drive timing adjustment calculation circuit that determines whether or not the response time of the sensor is greater than or equal to the response time of the sensor; a determination result that the target air temperature calculated by the target air temperature calculation circuit is the first calculation from the activation of the air conditioner; The response time of the outlet temperature sensor is the time between the judgment result that the temperature difference calculated by the target outlet temperature change judgment circuit is greater than or equal to the set target outlet temperature change value and the air mix door operation command in the air mix door drive timing adjustment calculation circuit until the present time. The temperature difference between the target blowout temperature and the actual blowout temperature is calculated based on any one of the above judgment results, and this temperature difference is compared with a preset set temperature difference value, and this temperature difference is the set temperature. An air mix door drive calculation circuit that outputs an air mix door drive signal when the temperature difference is other than the temperature difference value, and outputs an air mix door stop signal when the temperature difference is within the set temperature difference value; A drive circuit that activates and stops the drive device is provided.

Function When the air conditioner is started, the target outlet temperature calculation circuit calculates the target outlet temperature based on environmental factors such as the actual outlet temperature, outside temperature, solar radiation, vehicle interior temperature, and set temperature. It is determined whether the calculation is the first calculation after the air conditioner is started.

When the judgment result from the target outlet temperature calculation circuit is the first calculation after the air conditioner is started,
The air mix door drive calculation circuit calculates the temperature difference between the calculated target blowout temperature and the actual blowout temperature, outputs an air mix door drive signal corresponding to this temperature difference to the drive circuit, and this drive circuit operates according to the air mix door drive signal. Drives the air mix door.

On the contrary, if the determination result from the target air temperature calculation circuit is the second or subsequent calculation after the air conditioner is started, the target air temperature change judgment circuit determines the target air temperature calculated by the target air temperature calculation circuit. The difference between the blowout temperature and the previously calculated target blowout temperature is calculated, and it is determined whether this difference is equal to or greater than the set target blowout temperature change value.

Then, when the judgment result of this target air outlet temperature change judgment circuit is that the calculated target air temperature is greater than or equal to the set target temperature change value than the previous target air temperature, the air mix door drive calculation circuit The blowout temperature, the actual blowout temperature, and the temperature difference are calculated, and an air mix door drive signal corresponding to the temperature difference is output to a drive circuit, and this drive circuit drives the air mix door in accordance with the air mix door drive signal.

On the contrary, if the judgment result of the target air outlet temperature change judgment circuit is that the calculated target air temperature is less than the preset target temperature change value than the previous target air temperature, this judgment result is used to determine the air mix door drive timing. The adjustment calculation circuit receives the information, and the air mix door drive timing adjustment calculation circuit calculates the time from the air mix door operation command in the first calculation to the present, or the difference between the target blowout temperature and the actual blowout temperature in the second and subsequent calculations. It is determined whether the time elapsed from the command to operate the air mix door due to the temperature difference to the present time is longer than the preset response time of the outlet temperature sensor.

Then, if the judgment result of the air mix door drive timing adjustment calculation circuit is that the time from the air mix door activation command to the present is less than the response time of the outlet temperature sensor, the process returns to the input side of the target outlet temperature calculation circuit; Do not drive the air mix door.

On the contrary, if the judgment result of the air mix door drive timing adjustment calculation circuit is that the time from the air mix door operation command to the present time is longer than the response time of the outlet temperature sensor, the air mix door drive calculation circuit The blowout temperature, the actual blowout temperature, and the temperature difference are calculated, and an air mix door drive signal corresponding to the temperature difference is output to a drive circuit, and this drive circuit drives the air mix door in accordance with the air mix door drive signal.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. That is, as shown in FIG. 2, the air conditioner main body 1 is constructed by sequentially connecting a blower unit 5, a cleaning unit 6, and a heater unit 7, which are separated by casings 2, 3, and 4. . The blower unit 5 has a pair of intake doors 1 that open and close an outside air inlet 8 provided in the peripheral wall and internal air inlets 9 and 10 facing each other.
1 and 12, and a fan 14 whose driving source is a blower motor 13. Inside the cleaning unit 6, an evaporator 13 of a vapor compression type refrigeration cycle is disposed. Heater unit 7
Inside, there are an inlet tank 14 and an outlet tank 1 on both sides.
A heater core 16 having a diameter of 5 is disposed.

This heater unit 7 is of a so-called two-layer flow type, and a heater core 16 is disposed in the heater unit 17 horizontally along the flow direction of the air fed by the fan 14. Along with being there,
An upstream air guide 18 that divides the upstream ventilation surface 17 of the heater core 16 into two, and a downstream air guide 21 that divides the downstream ventilation surface 19 into two are provided. The upstream air guide 18 is connected to one side wall 22 of the casing 4.
, and defines a first introduction path 23 between the upstream ventilation surface 17 and the one side wall 22.
A second introduction path 24 is defined between the two. Also,
A first bypass path 26 is formed between the outlet tank 15 and the other side groove 25 of the casing 4 . A second bypass path 28 is formed between the introduction tank 14 and the rear wall 27 of the casing 4. Derivation tank 1
The boss portion 29 formed in the first introduction path 23
The first air mix door 3 is an operating means for opening and closing the
0 is set. A vent bypass door 31 is provided at the upstream end of the first bypass passage 26 to open and close the first bypass passage 26 in cooperation with the first air mix door 30. moreover,
A second bypass passage 2 is provided at the edge of the introduction tank 14.
A second air mix door 32 is provided as an operating means for opening and closing the air mixer 8.

A first air mix chamber 33 and a second air mix chamber 34 are provided on both sides of the downstream air guide 21. The first air mix chamber 33 includes a defrost outlet 35 pointing toward the front window, a center ventilator outlet 36 located in the center of the instrument panel disposed inside the vehicle, and side ventilators located on both sides. The outlets 37, 37 are in communication with each other. This side ventilator outlet 37,3
An air distribution control door 38 is provided between the openings 7 and 7.
In the vicinity of the air distribution control door 38 and inside each of the ventilator outlets 36, 37, 37,
A blowout temperature sensor 49 is provided. A ventilator door 39 for opening and closing each of the ventilator outlets 36, 37, 37 and a defrost outlet 3 are provided at the downstream end of the first air mix chamber 33.
A defrost door 40 that opens and closes 5 is provided. In addition, the second air mix chamber 34 includes:
A foot outlet 41 provided at the lower part of the vehicle interior is communicated with the vehicle, and a foot door 42 for opening and closing the foot outlet 41 is provided. A bypass door 43 is provided at a portion where the first and second air mix chambers 33 and 34 communicate with each other.

On the other hand, as shown in FIG.
The input port 4 has a room temperature setting unit 4 which is a setting means.
5 are connected, and an outside air sensor 46, a solar radiation sensor 47, a room temperature sensor 48, which are detection means,
A blowout temperature sensor 49 is connected via an A/D converter 50. This arithmetic and control device 44 is provided with a reference target blowout temperature selection circuit 51 that selects a reference target blowout temperature Tdb based on the outside air temperature Ta detected by the outside air temperature sensor 46. As illustrated in Fig. 3, the standard target outlet temperature Tdb is determined by using the function Tdb=f(Ta) using the outside temperature Ta, which gives a good sense of sensation when a harmonic wind blows against the outside temperature Ta.
It is predetermined for each case. In addition, the calculation control 44
The set room temperature output from the room temperature setting section 45 is
A target room temperature calculation circuit 52 is provided that calculates a target room temperature Tsor based on Ts and the vehicle interior temperature Tr detected by the room temperature sensor 48. At the output stage of this target room temperature calculation circuit 52, a target air temperature calculation circuit 53 is provided.
is provided. This target blowout temperature calculation circuit 5
3 calculates the target air temperature Tdo based on the target room temperature Tsor, the room temperature Tr, the amount of solar radiation Z, the reference target air temperature Tdb, and the set temperature Ts. It is determined whether this is the third operation. A target outlet temperature change determination circuit 57 is provided at the output stage of the target outlet temperature calculation circuit 53. This target outlet temperature change circuit 57 calculates the difference △Tdo (△Tdo =Tdo-Tdo'), and it is determined whether this difference ΔTdo is greater than or equal to a preset target blowout temperature change value _T0 . At the output stage of the target outlet temperature change determination circuit 57, an air mix door drive calculation circuit 54 and an air mix door drive timing adjustment calculation circuit 58 are provided in parallel. This air mix door drive timing adjustment calculation circuit 58 calculates the difference △ in the target outlet temperature change judgment circuit 57.
Based on the determination result that Tdo is less than the set target outlet temperature change value △T ₀ , it is determined whether the time t from the operation command for the air mix doors 30, 32 to the present is equal to or greater than the preset response time t ₀ of the outlet temperature sensor 49. Determine whether The time t from the operation command for the air mix doors 30, 32 in the air mix door drive timing adjustment calculation circuit 58 to the present time is the time t from the air mix door drive timing adjustment calculation circuit 58.
The output signal corresponding to the determination result that the response time of 9 is less than t ₀ is input to the input stage side of the target blowout temperature calculation circuit 53 . The air mix doors 30, 32 in this air mix door drive timing adjustment calculation circuit 58
The output signal corresponding to the determination result that the time t from the activation command to the present time is greater than or equal to the response time _t0 of the outlet temperature sensor 49 is output from the air mix door drive calculation circuit 54.
is input. The air mix door drive calculation circuit 54 sets the difference △Tdo between the judgment result that the target air temperature Tdo calculated by the target air temperature calculation circuit is the first calculation after starting the air conditioner and the target air temperature change judgment circuit 57. The determination result that the target blowout temperature change value T is greater than or equal to T ₀ and the air mix door drive timing adjustment calculation circuit 58
The target outlet temperature Tdo calculated by the target outlet temperature calculation circuit 53 is determined based on either one of the determination results that the time t from the operation command No. 2 to the present time is greater than or equal to the response time _t0 of the outlet temperature sensor 49. , the ventilator outlet 36 detected by the outlet temperature sensor 49,
The temperature of the current harmonized air being fed into the passenger compartment from 37 and 38, that is, the difference in temperature from the actual outlet temperature Td
Calculate Tdo−Td, compare this temperature difference Tdo−Td with a preset temperature difference value K, and calculate this temperature difference Tdo
-Td exceeds the set temperature difference value K, an air mix door drive signal including the operating direction of the air mix doors 30 and 32 is output based on the positive and negative values of the temperature difference Tdo - Td, which is the result of this calculation, while this temperature difference Tdo -
When Td becomes within the set temperature difference value K, an air mix door stop signal is output. At the output stage of this air mix door drive arithmetic circuit 54, a drive circuit 56 outputs a control signal according to the determination result to an air mix door actuator 55, which is a drive device.
is provided, and the air mix door actuator 55 is connected to the first and second air mix doors 3.
It is linked to 0,32.

Next, the operation of this embodiment according to the above configuration will be explained according to the flowchart shown in FIG. In other words, if you turn on the air conditioning switch (not shown),
The arithmetic and control device 44 is activated together with the air conditioner main body 1, and the physical environmental factors related to the temperature detected by each sensor 46, 47, 48, 49 are the outside temperature Ta, the amount of solar radiation Z, the vehicle interior temperature Tr, Actual discharge temperature Td,
and electrical signals of the set temperature Ts, which is a physical environmental factor in the vehicle interior, set by the occupant operating the room temperature setting unit 45 (step);
Based on these values, the target room temperature Tsor required to set the vehicle interior to the set temperature Ts is calculated (step). Next, in a step, a reference target temperature Tdb corresponding to the outside temperature Ta at the time is selected according to the characteristics shown in FIG. 3, and in a subsequent step, a target outlet temperature Tdo is calculated using the following calculation formula.

Tdo=Tdb−Kz・Z+Kr(Tsor−Tr)+Ks(Ts
−25) Here, for example, the following values are used for the coefficients Kz, Kr, and Ks.

Kz; 5/660°C・m ² h/kcal Kr; 2 Ks; 2 Next, in step, the target outlet temperature calculation circuit 53 calculates the calculated target outlet temperature Tdo in the first calculation after starting the air conditioner. Determine whether it exists or not. If the target outlet temperature Tdo that has just been calculated is the first calculation since the air conditioner was started, the process advances to step. On the contrary, if the currently calculated target outlet temperature Tdo is the second or subsequent calculation of the air conditioner, the process proceeds to step.

In the step, the target outlet temperature change judgment circuit 5
7, the difference △Tdo between the target outlet temperature Tdo calculated by the target outlet temperature calculation circuit 53 and the previous target outlet temperature Tdo' calculated and stored before this.
(△Tdo=Tdo−Tdo′), and calculate this difference △Tdo
is a set target outlet temperature change value such as 3℃
Determine whether T is greater than or equal to ₀ . And this difference △
If Tdo is less than the set target blowout temperature change value T ₀ (3°C), proceed to step. On the other hand, if the temperature difference Tdo is equal to or greater than the set target outlet temperature change value T ₀ (3° C.), the process proceeds to step.

In the step, the air mix door drive timing adjustment calculation circuit 58 determines that the time t from the operation command for the air mix doors 30, 32 to the present time by the calculation in the step described later is set to 10 seconds, for example, based on the temperature of the outlet temperature sensor 49 set from the experimental results. Determine whether the response time t is equal to or greater than ₀ . If the time t from the activation command for the air mix doors 30, 32 to the present is less than the response time _t0 of the outlet temperature sensor 49, the outlet temperature sensor 49 detects the harmonic air that has changed due to the processing of steps , which will be described later. Since the response time is within the time required to sense the accurate temperature, the process returns to the step. On the other hand, if the time t from the command to operate the air mix doors 30, 32 to the present time is longer than the response time _t0 of the outlet temperature sensor 49, the process advances to step.

In step, the target outlet temperature Tdo calculated in the above step is compared with the current actual outlet temperature Td detected by the outlet temperature sensor 49.
If the temperature difference between the two is Tdo-K>Td (Tdo-Td>K), proceed to step; if the absolute value of the temperature difference between the two is |Tdo-Td|≦K, proceed to step,
The temperature difference between the two is Tdo+K<Td (Tdo−Td<-K)
If so, proceed to step.

In the above step, the temperature difference between the target blowout temperature Tdo and the actual blowout temperature Td is Tdo-
Since K>Td, the air mix door drive calculation circuit 54 operates the air mix doors 30 and 32.
A drive signal for driving to the warm side is output to the drive circuit 56, and from this drive circuit 56 the air mix door actuator 55 outputs the air mix door 30,
32 to the Warm side is supplied, and the air mix doors 30 and 32 reach the above temperature difference Tdo-K>
Move to Warm side according to Td.

In the above step, the absolute value of the temperature difference between the target outlet temperature Tdo and the actual outlet temperature Td is |Tdo−Td|≦K, that is, due to the operation of the air mix doors 30 and 32, the outlet temperature Td is determined by the target outlet temperature calculation circuit. Target blowout temperature calculated in 52
Since the state is asymptotic to Tdo, the air mix door drive calculation circuit 54 outputs a stop signal for the air mix doors 30, 32 to the drive circuit 56, and the power supply from the drive circuit 56 to the air mix door actuator 55 is stopped. The absolute value of the above temperature difference between the air mix doors 30 and 32 |
It stops at a position according to Tdo−Td|≦K.

In the above step, the temperature difference between the target outlet temperature Tdo and the actual outlet temperature Td is Tdo+
Since K<Td, the air mix door drive calculation circuit 54 operates the air mix doors 30 and 32.
A drive signal for driving toward the Cool side is output to the drive circuit 56, and from this drive circuit 56, the air mix door actuator 55 is connected to the air mix door 30,
32 to the Cool side is supplied, and the air mix doors 30 and 32 have the above-mentioned temperature difference Tdo+K<
Move to Cool side according to Td.

Then, the air mix door actuator 55 is controlled according to the drive signals of the steps, and the same as in the step described above.
When Tdo−Td｜≦K, air mix door 3
0 and 32 are the actual outlet temperature Td and target outlet temperature Tdo
It is stopped at a position where the temperature difference between the two is maintained within the set temperature difference K.

Here, the set temperature difference K is a hysteresis portion preset from experimental results, for example, 0.8
It is set to ℃.

Driving to the warm side in the above step means
This means moving the air mix doors 30, 32 in a direction that increases the amount of air passing through the heater core 16. Further, in the above step, driving toward the cool side means moving the air mix doors 30, 32 in a direction in which the amount of air passing through the heater core 16 decreases. At this time, air mix door 3
As shown in FIG.
is the dotted line position, the air mix doors 30, 32 are moved to the 4/6 position, which is the air mix door movement distance of the target outlet temperature Tdo, in a unique manner according to the temperature difference between the target outlet temperature Tdo and the actual outlet temperature Td. Determined. Therefore, the air mix door 30,
32, there is no need to detect the current position or amount of movement of the air mix doors 30, 32, and the amount of movement is uniquely determined according to the temperature difference between the target outlet temperature Tdo and the actual outlet temperature Td. It is sufficient to move the air mix doors 30, 32, and a potentiometer for detecting the opening degree of the air mix doors 30, 32 is not required. Moreover, using the actual outlet temperature Td, which is the temperature of the actual harmonic air, the difference temperature Tdo−Td between the target outlet temperature Tdo and the actual outlet temperature Td is within the set temperature difference value K (|Tdo−Td|≦K) Therefore, even if there is an installation error in the heater core 16 or air mix doors 30, 32 for each air conditioner body 1, the actual outlet temperature Td can be accurately maintained within K with respect to the target outlet temperature Tdo. can.

In addition, if the judgment result in the step is NO, the process in step ~ is performed without performing the process in step ~ and the process returns to the step, so the current target blow-off temperature Tdo changes only a little compared to the previous target blow-off temperature Tdo'. If not, wait for the response time of the outlet temperature sensor 49 and drive and control the air mix doors 30, 32. Conversely, if the determination result in the step is YES, the process in the step is executed. Since the process from step ~ is performed without performing the above steps, it is of course possible to use this function if, for example, the currently calculated target outlet temperature Tdo changes significantly compared to the previous target outlet temperature Tdo' due to the operation of the room temperature setting section 45 by the occupant. Even if the occupant does not operate the room temperature setting unit 45, the temperature inside the vehicle changes as the occupant opens the door for getting on and off the vehicle, the window glass, etc.
The target blowout temperature Tdo that has just been calculated due to a sudden change in Tr
Even if the temperature changes greatly compared to the previous target outlet temperature Tdo', the air mix doors 30 and 32 are driven and controlled without waiting for the response time of the outlet temperature sensor 49. As a result, the air mix doors 30, 32
Not only does the calculation processing speed for controlling the drive to a position where |Tdo−Td|≦K become faster, but also the responsiveness to environmental changes inside the vehicle becomes faster.

In addition, the set target temperature change value in the step
T ₀ =3°C is an example, and may be changed as appropriate depending on the individual conditions of the vehicle or air conditioner, or the target performance.

Effects of the Invention As described above, according to the present invention, the current temperature of the conditioned air fed into the vehicle interior from the outlet of the air conditioner main body, that is, the actual outlet temperature, is actually detected, and the detected actual outlet temperature is detected. The air mix door is driven in a direction that brings the actual air outlet temperature asymptotically closer to the target air outlet temperature according to the temperature difference between the temperature and the calculated target air outlet temperature, and the air mix door is stopped when the temperature difference between the two temperatures falls within a predetermined value. Therefore, when controlling the air mix door, it is sufficient to drive the air mix door with a movement amount uniquely determined according to the temperature difference, and there is no need to detect the position or movement amount of the air mix door. Therefore, it is possible to reduce the cost of the device by eliminating the need for a potentiometer for detecting the position and amount of movement of the air mix door, and the air mix door is controlled directly using the actual temperature of the harmonized air. Even if there is an error in the characteristics of the air conditioner due to parts installation errors, the actual outlet temperature can be maintained asymptotically to the target outlet temperature with accuracy, and comfort can be maintained regardless of differences in the characteristics of the air conditioner. You can improve your performance.

Furthermore, according to the present invention, if the difference between the currently calculated target air temperature and the previously calculated target air temperature is within the set target temperature change value, the air outlet temperature sensor detects the accurate harmonic air temperature. Wait for the response time until the temperature is sensed, then drive and control the air mix door.Conversely, if the difference between the currently calculated target outlet temperature and the previous target outlet temperature is other than the set target outlet temperature change value, Since the system controls the air mix door without waiting for the response time of the outlet temperature sensor, not only the calculation processing speed for controlling the drive of the air mix door becomes faster, but also Of course, if the target air temperature that has just been calculated has changed significantly compared to the previous target air temperature, or if the passenger does not operate the room temperature setting section, the passenger may change the vehicle's entrance/exit door, window glass, etc. Even if the temperature inside the vehicle suddenly changes when the door is opened, and the currently calculated target air temperature changes significantly compared to the previous target air temperature, the air mix door will control the drive without waiting for the response time of the air outlet temperature sensor. This speeds up the response to environmental changes inside the vehicle.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention;
FIG. 2 is a conceptual diagram of the air conditioner main body according to the same embodiment;
Fig. 3 is an outside air temperature vs. standard outlet temperature characteristic diagram of the same embodiment, Fig. 4 is a flowchart showing the operation of the same embodiment, and Fig. 5 is an actual outlet temperature Td/target outlet temperature Tdo of the same embodiment - air mix door. The movement amount characteristic diagram, FIG. 6, is a conceptual diagram showing a conventional automatically controlled air conditioner. DESCRIPTION OF SYMBOLS 1... Air conditioner main body, 30... First air mix door, 32... Second air mix door, 44...
... Arithmetic control device, 45 ... Room temperature setting unit (setting means), 49 ... Outlet temperature sensor, 54 ... Air mix door drive calculation circuit, 55 ... Air mix door actuator (drive device), 56 ... Drive circuit, 57 ... ...Target outlet temperature change judgment circuit, 58
...Air mix door drive calculation timing adjustment circuit.

Claims (1)

[Scope of Claims] 1. Detection means for detecting temperature-related physical environmental factors and outputting them as electrical signals; a setting means for sending an electric signal; an outlet temperature sensor for detecting the current actual outlet temperature of the harmonized air blown out from the outlet of the air conditioner body; and a target outlet temperature based on the output signals of the detecting means and the setting means. and a target air temperature calculation circuit that calculates the target air temperature and determines whether or not the calculated target air temperature is the first calculation after starting the air conditioner. Based on the determination result that is calculated from the second time after the air conditioner is started, the difference between this calculated target air temperature and the previous target air temperature calculated before this is calculated, and this difference is set in advance. A target air outlet temperature change determination circuit that determines whether or not the target air temperature change value is greater than or equal to the set target air temperature change value, and a determination result that the temperature difference calculated by this target air outlet temperature change determination circuit is less than the set target air temperature change value, an air mix door drive timing adjustment calculation circuit that determines whether or not the time from the air mix door activation command to the present is equal to or longer than a preset response time of a blowout temperature sensor; and a target blowout temperature calculated by the target blowout temperature calculation circuit. a determination result that is the first calculation after starting the air conditioner, a determination result that the temperature difference calculated by the target outlet temperature change determination circuit is greater than or equal to the set target outlet temperature change value, and a determination result that the air mix door drive timing adjustment calculation circuit The temperature difference between the target outlet temperature and the actual outlet temperature is calculated based on the judgment result that the time from the air mix door activation command to the current time is longer than the response time of the outlet temperature sensor, and the temperature difference between the target outlet temperature and the actual outlet temperature is calculated. The temperature difference is compared with a preset temperature difference value, and when this temperature difference is outside the set temperature difference value, an air mix door drive signal is output, and when this temperature difference is within the set temperature difference value, the air mix door is stopped. An air mix door control device for an automatically controlled air conditioner, comprising: an air mix door drive arithmetic circuit that outputs a signal; and a drive circuit that operates and stops an air mix door drive device according to the output signal of the air mix door drive arithmetic circuit.