JPS6250216A - Automatic control air conditioning device - Google Patents

Abstract

PURPOSE:To prevent production of unpleasant sensation, by a method wherein, in case it is decided that the starting is executed by a heat mode and a high level mode, an upper part desired room temperature arriving time is delayed than a lower part desired room temperature arriving time. CONSTITUTION:When internal and external temperatures 31 and 32, a blow-off temperature 33, a solar radiation amount 34, and a water temperature 35 are inputted to a computing control device 40 togetherwith a set temperature 36, the computing device 40 sets an upper desired room temperature and a lower part desired room temperature and further decides and air flow, and decides a blow-off mode. When the decision causes selection of a high level mode and a heat mode, if an upper part temperature is below an upper part desired temperature, since there is a risk of overshoot occurring, a lower supply opening A is automatically controlled, a ventilator supply opening 8 and a defrost supplying opening C are closed, and are opened after a specified time lapsed. This constitution delays an upper part desired temperature arriving time, and prevents the occurrence of overshoot.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an automatic air control system installed in an automobile that reduces discomfort caused by an error between the vehicle room temperature and a target source.

Conventional technologyJapanese Patent Application Laid-Open No. 60-60 as an air conditioner installed in conventional automobiles
The one disclosed in Japanese Patent No. 1327 has been proposed. In this air vent I4 device, an upper target room temperature and a lower target room temperature are calculated based on the signals from each temperature sensor in order to create an optimal environment within a single room, and the blowing mode is also set based on the signals. select. When the heat mode is selected, as shown in Fig. 7 (a), air is distributed from the lower foot air outlet R-A and the upper defroster air outlet C, and the bi-level mode is selected. If the seventh
As shown in Figure (B), the air is blown out from the footwell outlet A and the ventilator outlet B, and the temperature in the upper part of the passenger compartment is detected by the upper room temperature sensor, and the temperature in the lower part of the passenger compartment is detected by the lower room temperature sensor, and calculations are made. Single room by control device
The temperature of the upper and lower parts is controlled so as to be close to the upper target temperature and the lower target temperature by M.

Problems to be Solved by the Invention However, in such a conventional device, the temperature of the upper part and the lower part of the single picture are detected by upper and lower room temperature sensors, and this detection ff[and the temperature of the upper part.

Control is performed to maintain the upper and lower portions of the vehicle compartment at the respective target temperatures by correcting the differences between the target room temperatures of the lower portions. For this reason, when the air conditioner is started, each room temperature sensor may follow the rapid rise in the vehicle room temperature, resulting in a response delay, which inevitably results in target temperature maintenance control based on the signals from each room temperature sensor. Control delays also occur. Therefore, when the air conditioner is started in the heat mode or bilevel mode during the autumn season, the lower room temperature TL and the upper room temperature Tu will change due to the response delay, as shown in FIG. 6(a).
Lower target source T at optimum temperature 5gl6. Upper target source T
The impurity that is above (b) sou, that is, overshoe
) 0.8 occurs. For this reason, especially in the upper side VC of the passenger compartment, the ideal air warming condition, head cold and foot heat, is temporarily impaired by the overshoe, which is higher than the upper target source T sou ('), S, and as a result, There was a risk of discomfort in the head.

This invention was made in view of the conventional situation, and the automatic 11 system suppresses discomfort caused by overshoot by shifting the temperature difference Δt to a small value.
1 controlled air conditioner.

Friendly Means for Solving the Problems In order to solve these problems, the present invention includes a detection means for detecting nine physical environmental factors related to temperature and outputting them as electrical signals, and a detection means for detecting nine physical environmental factors related to temperature and outputting them as electrical signals. a setting device that sends out an electrical signal in accordance with a setting operation by the occupant to set the temperature, a drive device that drives an operating element related to temperature, and an optimum environment based on a signal indicating the output signal of the detection device and the electronic control device. and a performance control device that calculates an upper target room temperature and a lower target room temperature in order to form a target room temperature in the vehicle interior, and sends a command signal to the drive wJ device based on the calculation results, and the detection means includes at least It has a foot air temperature sensor that blows air temperature to the footwells and an upper room temperature sensor that detects the temperature of the upper part of the passenger compartment, and the drive device is a mode actuator that drives a door that opens and closes the air outlet in the footwells and the lower part of the passenger compartment. In the automatic control air conditioner having:
Based on the output signals of the detection means and the setting means, when it is determined to start in the same mode or bilevel mode by opening both the footwell and the upper part of the passenger compartment, the room temperature returns to the upper target room temperature. The device is configured to output a command signal to the drive device in order to delay the arrival time of the lower target room temperature than the arrival time of the lower target room temperature.

In the configuration, the control device adjusts the room temperature in the lower part and the target room temperature in the lower part in order to form an M suitable environment in the vehicle interior, based on the output signals of the detection means and the setting means. calculate,
The mode actuator is actuated by a command signal based on the result of this reduction to form all modes. At this time, when the control device selects the heat mode or the bi-level mode based on the calculation result, the mode actuator is actuated in response to a command signal, drives the door, and opens the air outlet at the footwell and the upper part of the passenger compartment. At the same time, the calculation flN control device
In response to the determination that the startup is to be performed in the self-heat mode or high-level mode, the driving device is instructed to delay the time for the room temperature to reach the lower target room temperature than the time for the room temperature to reach the lower target room temperature. Output a signal. Then, this drive device 1, which drives temperature-related operating elements, sets the target upper room temperature by specific operations such as delaying the timing of blowing air from the upper part of the passenger compartment or maintaining the temperature of the air blown from the upper part at a low temperature. Delay reaching temperature.

Therefore, the upper spastic temperature sensor is able to follow the slow temperature rise in the upper part of the passenger compartment, which is indirectly heated by the air blowing from the lower part, and detects the temperature increase in the upper room temperature with little response delay. . Therefore, in the control to maintain the upper target room temperature based on the output signal of the upper temperature sensor with less response delay in 6, the overshoot in which the actual upper room temperature exceeds the upper room temperature is further reduced.

A practical example of the present invention will be explained with reference to the drawings.

FIG. 1 is a system diagram showing a roll train of the present invention.

The figure shows an internal/external air system chamber 10, a drive unit @20. A portion 30 including detection means, setting means, etc.
and an arithmetic and control unit [40].

The system chamber 10 includes an outside air introduction duct 11 and an inside air introduction duct 12. Inside/outside air switching door 13. proafan 14
．． Evaporator 15. Heater core 16, air mix door 17A, 17f1.17C'.

Each door 18A-1 is equipped with a floor door 18A, a ventilator door 18B, and a differential star door 18c.
Foot outlet A is selected by selecting 8c.

Ventilator air outlet which is the air outlet in the upper part of the vehicle compartment 8. Two-layer blowout control is activated to select any two of the defroster blowout ports C.

Outside air introduction duct) II is a duct for introducing air from outside the vehicle interior, and inside air introduction duct 12 is a duct for reintroducing air inside the vehicle interior. 3 selects which duct 11 or 12 air is to be taken in from.

The proafan I4 sends the air introduced from the ducts II and +2 into the vehicle interior. An evaporator 15 is provided immediately after the blower fan +4, and generates cold air by introducing refrigerant.

The heater core 16 forms warm air and mixes this warm air with the cold air from the evaporator 15, and the mixing ratio is adjusted by opening the air mixer 717 to -170.

In this way, the switching force of the inside/outside air switching door 13, the rotation speed of the proa fan 14, and the air mix door 17A-17c
The optimal amount of air is sent into the passenger compartment by adjusting the opening angle.

Normally, such air is blown out through the floor outlet A with the floor door 18A and the pliers outlet B with the ventilator door 18B during the summer and intermediate seasons (bi-level mode), and in the winter with the floor outlet A with the ventilator door 18B. A and defroster outlet C with defroster door 18C (heat mode).

Helmet, each element +3.14.17A~17c, 18mu~18
Items c are operated by a passenger or automatically, and are referred to as "operating elements" in this specification as necessary.

The drive device 20 includes operating elements 13.1 related to the temperature of the cocoon.
4.17A to 170, 18A to 18C, and includes a switching actuator 21, a motor control circuit 22. An opening adjustment actuator 123 and a mode actuator 241JL are provided. The switching actuator 21 switches the inside/outside air switching door 1 according to the command signal cC1.
3 in a predetermined switching direction. The motor control circuit 22 determines 10777714 rotational speeds based on the command signal CC2. The one-section opening actuator 23 determines the opening degrees of the air mix doors 17A to 17c based on the command signal CC3. The mode actuator 24 receives a command signal CC
4, the defrost mode DEF1 drives the door 18c and opens only the air outlet C. Doors 18A and 188
Bi-level mode B in which the air is blown out and the air is turned on, and B is opened.
/L, ventilator mode that drives door 18B and opens only air outlet B)"VENT, l'718A and 18C
A heat mode signal is generated to open the air outlets A and C.

The portion 30 includes a detection means for detecting a physical environmental factor related to temperature and outputting it as an electric signal, and a setting means for sending out an electric signal according to a setting operation by a passenger to set a physical environmental factor related to temperature in the vehicle interior. , and other means.

As a detection means, an outside temperature sensor 31. which detects the temperature outside the vehicle interior is used. A room temperature sensor 32 that detects the temperature inside the vehicle. A blowout temperature sensor 331 detects the blowout temperature from each outlet; a solar radiation sensor 34 detects solar radiation. A water temperature sensor 35 for detecting the temperature of engine cooling water is also provided.

As a setting means, a temperature setting switch 36 is provided for setting a desired cabin temperature.

Other means are an AD converter 38 and a temperature display device 39. The AD converter 38 converts the output signals 881-88!5 of each detection means into digital signals for post-processing. Temperature display device (t39 is for displaying the set temperature by the set temperature switch 36, and includes a fluorescent tube, LED,
Various methods other than segment display using a liquid crystal display are possible.

In addition, each sensor 3I~35 each has a detection signal SSI~
885, and the mixture setting switch 38 receives the set temperature signal C.
In this specification, physical environmental factors related to temperature include not only temperature, but also humidity, solar radiation, etc., and factors that affect the temperature within a single room, such as single velocity. etc., as necessary.

Arithmetic 111 control device [40 is each detection means and setting means]
Signals SSI to SS5. Based on C8, control command No. 41 CCl-CC4 is sent out to create an optimal environment inside the vehicle.

The structure of the parts of this M-Il+Gousou@40 that are mainly related to this invention is shown in FIG. In the same figure, the same reference numerals as in Fig. 1 refer to the same objects 'f: O'. Temperature difference calculation 1 view 1 path 42A, lower temperature difference calculation circuit 42B, air blowing blade circuit 43. A blowout mode selection circuit 44 is provided.

Also, according to the figure, the room temperature sensor 32 in FIG. 1 is divided into an upper room temperature sensor 32A and a lower temperature sensor 32B.
t1338 is shown.

-F part target room temperature performance circuit 41A lower part target room temperature r#)
1 circuit 41B includes an outside temperature sensor 319 and a solar radiation sensor v34.
and an outside temperature signal 881. which is the output signal of the temperature setting switch 36. Solar radiation belief 884. and the set temperature signal CS are calculated independently. The output signals indicating the target temperature are SEA and SIB, respectively.

Upper temperature difference calculation circuit 42A and lower temperature difference calculation circuit 42
8 are the output signals SIA of the arithmetic circuits 4]A and 41B, respectively.
, SIB and the output upper room temperature signal 5S2A of the upper room temperature sensor 32A and the output lower room temperature signal B52B of the lower room temperature sensor 32B are controlled to produce a small difference signal ΔSA, respectively.
ΔSB is formed.

The air outlet rLilI' calculation circuit 43 receives the output signal ΔS'A of the upper temperature difference calculation path N path 42A and the lower temperature difference calculation circuit 42B.
The blowout air volume is calculated based on the output signal Δ8B, and the blowout air cover is generally controlled to decrease as the cabin temperature approaches the target temperature.

Further, this circuit 43 is connected to the water temperature sensor V-35 and VIIi.
An interrupt is generated by the output signal S85.5S3B of the N'I' temperature blowout sensor 33B, and the blowout air volume is reduced or restored to the original air volume, respectively.

The blowout mode selection circuit 44 selects the defrost mode DEF, bi-level mode B/L, and ventilator mode VENT based on the output signal ΔSA of the upper temperature difference calculation circuit 42 and the output signal ΔSa of the lower temperature difference operation circuit 42B.
, Heat mode HEI: This is for selecting A T fathom. However, a signal 885 from the water temperature sensor 35 causes switching from the heat mode to the defroster mode.

That is, when the heat mode is selected by the signal ΔSA and the water temperature is below a certain value Two (for example, 41° C.) by the water temperature sensor 35, the defroster mode DEA is selected.
An interrupt is applied to the blowout mode selection circuit 44 to select F.

Next, the operation of the present embodiment having the above configuration will be explained based on chart 7a shown in FIG. That is, when the switch of the air conditioner is turned on, the system starts up and determines the outside temperature Ta and the solar cover Za.

Upper room temperature Tu and lower room temperature TL are each sensor 33, 34.3
2A and 328, and the set temperature Tm set according to the passenger's wishes by the setting switch 36 is read (step (D). Then, based on the outside air temperature Ta and the amount of solar radiation Ze, the performance circuit In step 41A, the upper target room temperature T sou is calculated, and in the calculation circuit 41B, the lower target room temperature T sot is calculated (step ■).
. Further, the arithmetic circuit 42A calculates a temperature difference ΔTu (signal ΔS
A), and the performance circuit 42B calculates the temperature difference ΔTt between the lower room temperature TL and the lower target room temperature TmoL,
((corresponding to the in number ΔSB)) is calculated. This temperature difference ΔTu
and ΔTL, the performance circuit 43 determines which balloon to blow out according to a predetermined performance, and the selection (b) path 44 selects one of the above-mentioned modes according to preset conditions (step ①). ). In this step ■, Tefrost mode DI! ! F, when the ventilator mode VENT is selected, the determination in step ■ is No.
Then, automatic control is performed based on the smooth control characteristics of the automatic air conditioner (step (5)). The above step ■
, bi-level mode B/L or heat mode H
When g A T is selected, 1. room temperature T
It is determined whether or not u is lower than the target upper temperature temperature Tsou (step (Φ)), and if this determination is NO,
Since the condition is not such that an overshoot may occur in the second part (as mentioned above, the sub-basute occurs when the upper target flow rate T sou K I51 and the upper part room temperature Tu are increased), the blowout temperature and air volume are is automatically controlled based on the control characteristics of (step ■).

If the determination in step ■ is YES, it is further determined from the signal of the water temperature sensor v35 whether the cooling water temperature Tw is greater than or equal to the predetermined value (step @), and whether the foot outlet temperature TdL is equal to or greater than the predetermined value Tdo.
It is determined whether the above is the case (step (9)), and if each determination is NO, the motor control circuit 22 sets the voltage applied to the proar 7 un 14 to a predetermined low value in order to suppress the excessive supply of low-temperature air. Fixed (step [phase] ) 0 (next step old) ~ 0 is processing and determination to suppress overshoot in the upper part of the passenger compartment, and in step 0, the lower part where overshoot is allowed to occur. Speech bubble (
Floor outlet A) is automatically controlled. - Sumo wrestler section air outlet (for bilevel mode B/I with JJjb, ventilator air outlet B1; for heat mode HEAT, differential zero star air outlet C), the corresponding door 188, 180 is driven by the mode actuator 21. This state is continued until a predetermined period of time has elapsed since the blank word device was started (step ◎). Then, as shown by the dotted line in FIG. 6(α), the upper room temperature Tu gradually rises as the upper part of the vehicle interior is indirectly heated by the air blowing from the lower part, and the upper room temperature sensor 32A It follows the slow rise in the upper room temperature Tu without response delay. Therefore t
After o has passed, the upper outlet temperature is automatically controlled (step (1),
When the air outlets B and C are opened in accordance with each mode and hot air is blown, the upper room temperature Tu rises to some extent as described above, and the upper room temperature sensor 32A follows this. Because of this, the range of sudden temperature rise is small,
Moreover, the response delay of the sensor 32A is reduced.

Therefore, due to this response delay, there is an overshoot o in which the upper room temperature Tu rises above the upper target temperature Tsou.
At H, by setting the temperature difference Δtl between Tu and T sou to a low value (Δt' (Δt)), the discomfort in the head caused by this temperature difference can be suppressed.

In addition, in this case [HJ], in step O, the upper blow-off (air outlet 8.C) was closed; If the upper room temperature Tu is fixed at a temperature lower than 30°C, as shown by the dotted line in FIG. The followability of the room temperature sensor 32A is the same as above, and the temperature difference Δt' between the upper room temperature Tu and the upper target room temperature Tsou at 0.8 is an even smaller value (Δt
It is possible to make I<Δt'<c). Furthermore, as shown in FIG. 5, in step @, the lower room temperature TL
It is also possible to automatically control the upper blowing temperature using the reaching of the lower target room temperature TsoL as a release condition.

DETAILED DESCRIPTION OF THE INVENTION As described in the detailed description of the invention, when starting in heat mode or bilevel mode, the time for the upper room temperature to reach the target room temperature is longer than the time for the lower room temperature to reach the target room temperature. I tried to delay it. Therefore, with the sensor that detects the room temperature in the second part, the lower room temperature reaches the target room temperature early, making it possible to follow the gradual warm rise in the room temperature in the second part, which is indirectly heated, and respond. -F section room temperature upper temperature range is detected in a state with little delay. Therefore, by executing control to maintain the room temperature of the upper opening 411 based on the sensor output signal in a state with little response delay,
The question is whether to suppress the overshoot in which the lower room temperature exceeds the upper target room temperature. Therefore, it is possible to minimize the disadvantage of temporary head cold and foot heat, which is a buried air conditioning condition, caused by an overshoot in the upper room temperature, and suppress the discomfort caused in the head due to the overshoot. , it is possible to solve this problem.

[Brief explanation of the drawing]

FIG. 1 is a system diagram showing a decorative example of the present invention, and FIG. 2 is a system diagram showing an example of the present invention.
A system diagram showing the main parts of the dosho pongee 0, Fig. 3 is a flowchart showing the operation of the dosho pongee shiri, Fig. 4.5 is a flowchart showing the other pongee process, and Fig. 6 ( b) is an explanatory diagram showing the overshoot state of a conventional automatic control air conditioner;
Figures 6 (b) and (-) are explanatory diagrams showing the overshoot state of the inclusion example of the present invention, and d47 Figures (a) and (b) are explanatory diagrams showing the blowing air state in heat mode and bi-level mode. It is a diagram. 18A... Floor door, 18B... Ventilator door, 18C... Differential zero star door, 20... Drive unit, 24... Mode actuator, 32A... Upper room temperature sensor, 32B... Lower room temperature Sensor, 36...
Temperature setting switch, 40... Arithmetic control device, A...
Floor air outlet (air outlet at the lower part of the passenger compartment), 8... Ventilator air outlet (air outlet at the upper part of the passenger compartment), C... Default star air outlet (air outlet at the upper part of the passenger compartment).

Claims (1)

[Claims] (1) Detection means that detects physical environmental factors related to temperature and outputs them as electrical signals; Setting means that sends out electrical signals according to the setting operation by the occupant to set the temperature inside the vehicle; and An upper target room temperature and a lower target room temperature are calculated in order to create an optimal environment in the vehicle interior based on a drive device that drives the operating element, and a signal indicating the output signal of the detection means and the setting means. and an arithmetic and control device that sends a command signal to the drive device based on the detection means, and the detection means includes at least a foot air temperature sensor that detects the air air temperature at the foot, and an upper room temperature sensor that detects the temperature of the upper part of the vehicle interior. In the automatic control air conditioner, the drive device includes a mode actuator that drives a door that opens and closes an air outlet in a footwell and an upper part of the vehicle interior, wherein the arithmetic and control device detects output signals of the detection means and the setting means. In accordance with the determination to execute startup in heat mode or bi-level mode with both the footwell and the upper part of the vehicle air outlet opened based on the above, the time required for the room temperature to reach the upper target room temperature is changed to the lower target room temperature An automatically controlled air conditioner characterized in that a command signal is output to the drive device so as to delay the arrival time of the air conditioner.