JP2600474Y2 - Automotive air conditioners - Google Patents

Description

[Detailed description of the invention]

[0001]

This invention detects the environmental conditions such as the cabin temperature which affect the air conditioning in the cabin by a group of sensors.
Vehicle air that automatically controls the operation of air conditioner members such as fan motors, intake doors, and mode doors based on control lines that define operating characteristics so that the vehicle interior temperature is maintained at a set temperature. It relates to improvement of a harmony device.

[0002]

2. Description of the Related Art In recent years, some air conditioners for automobiles are referred to as auto air conditioners that improve the comfort of occupants by maintaining the interior temperature of a vehicle at a set temperature. The auto air conditioner includes a group of sensors for detecting environmental conditions such as a vehicle interior temperature, an outside air temperature, an engine water temperature, an amount of solar radiation, etc., which affect air conditioning in the vehicle interior, a temperature setting unit for setting a desired vehicle interior temperature, Fan motor provided to realize the air conditioning environment of the vehicle interior,
Intake doors, mix doors, air conditioning equipment members such as mode doors, and so on, to maintain the vehicle interior temperature at a set temperature, the operation of the air conditioning equipment members, based on a control line that determines the operating characteristics, It is controlled automatically.

For example, automatic control of a fan air volume by a fan motor is performed based on a control line shown in FIG. 6. When an absolute value of a difference between a set temperature and a current vehicle interior temperature is taken as a temperature control parameter. When the temperature control parameter is large, that is, when the temperature difference between the set temperature and the current vehicle interior temperature is large, the voltage applied to the fan motor is increased to increase the fan airflow, while when the temperature control parameter is small, When the temperature difference between the set temperature and the current vehicle interior temperature is small, the voltage applied to the fan motor is reduced to reduce the fan airflow. In the middle range, the fan airflow is automatically reduced as the temperature control parameter decreases.

[0004] In addition to the automatic control operation as described above, the automatic air conditioner can be manually controlled in consideration of the possibility that an occupant may desire an air conditioning state different from the air conditioning state by the automatic control operation. Has become. In order to perform the manual control, the automatic air conditioner is provided with a manual selection switch for manually changing the operation of each air conditioning device member.

For example, when the fan air volume is manually controlled, when an operator operates a manual selection switch relating to the fan air volume, the fan air volume corresponding to the operation of this switch is selected prior to the fan air volume based on the automatic control. It is supposed to be. Also, various air conditioning modes such as a vent mode and a bi-level mode can be switched from automatic control to manual control, and when an operator operates a manual selection switch related to the air conditioning mode, the operation of this switch is reduced. The corresponding air-conditioning mode is selected prior to the air-conditioning mode based on the automatic control.

[0006]

[Problems to be Solved by the Invention] When the fan air volume and air conditioning mode are switched from automatic control to manual control by operating the manual selection switch, the selected fan air volume and air conditioning mode are fixed thereafter, and the state is maintained as it is. Air conditioning in the cabin is continued.

[0007] For this reason, there has been a problem that the occupant's comfort is impaired when the environmental conditions affecting the air conditioning in the passenger compartment or the set temperature change. For example, if the occupant feels that the airflow by the automatic control is small, the occupant operates the manual selection switch for the fan airflow to increase the airflow by the automatic control to a desired airflow, but the temperature inside and outside the vehicle changes. If the air volume manually selected becomes too large than the air volume optimal for the environmental condition, the occupant will feel discomfort. At this time, the occupant had to operate the manual selection switch again to perform an operation to reduce the air volume, and the operation was complicated.

[0008] The occupant's discomfort and complicated operation that occur when the operation of an air conditioner member is switched from automatic control to manual control are fixed by operating the manual selection switch. This is due to the continuation of air conditioning in the passenger compartment while the vehicle is being operated.

The inventors of the present invention provide an air conditioner for an automobile which does not cause occupant discomfort or complicated operation when the operation of a certain air conditioner member is switched from automatic control to manual control. As a result of extensive research, the conventional fixed concept of maintaining the operation of the air conditioner member in a fixed state when the manual selection switch for the air conditioner member is operated in the case of performing the automatic control operation is defeated,
When the manual selection switch is operated during the automatic control operation, if the intention of the occupant by the operation of the manual selection switch is incorporated into the automatic control operation, it has been found that the above-described problem does not occur, and the present invention has been completed. .

Accordingly, the present invention provides an air conditioner for a vehicle which does not cause occupant discomfort or complicated operation when a manual selection switch of an air conditioner member is operated during automatic control operation. The purpose is to:

[0011]

According to a first aspect of the present invention, there is provided an air conditioner, which controls environmental conditions such as a vehicle interior temperature, an outside air temperature, an engine water temperature, and the amount of solar radiation, which affect air conditioning in the vehicle interior. A group of sensors to be detected, temperature setting means for setting a desired vehicle interior temperature, a fan motor for driving a fan, and a temperature based on a temperature difference between the set temperature set by the temperature setting means and the current vehicle interior temperature. Controlling an operation of the fan motor based on a control line that determines an applied voltage to the fan motor according to a value of a key parameter, an auto switch for designating an automatic control operation of a fan air volume, and an operation of the fan motor. When a manual selection switch for manually selecting the fan air volume and an automatic control operation of the fan air volume is designated by the auto switch, based on the control line, A control for outputting a signal to the fan motor to increase the fan air flow as the temperature control parameter increases, and outputting a signal to the fan motor to decrease the fan air flow as the temperature control parameter decreases. Means, the storage means in which a plurality of control lines that make the fan air flow different even if the value of the temperature control parameter is the same is stored in advance, and the control means is During the automatic control operation of the fan air volume, when a manual operation for increasing the fan air volume is performed by the manual selection switch, the control line on which the automatic control operation is performed is the same as the temperature control parameter. Is also changed to a control line in which the fan airflow is set to a larger airflow, and the automatic control operation of the fan airflow is continued according to the changed control line. During the automatic control operation of the fan air volume, when a manual operation to reduce the fan air volume is performed by the manual selection switch, a control line serving as a base for performing the automatic control operation is provided with the same value of the temperature control parameter. Is an air conditioner for an automobile characterized in that the fan air flow is changed to a control line for setting a smaller air flow, and the automatic control operation of the fan air flow is continued according to the changed control line. Further, the invention according to claim 2 provides a vehicle interior temperature that affects air conditioning in the vehicle interior,
By switching a group of sensors for detecting environmental conditions such as an outside air temperature, an engine water temperature, and an amount of solar radiation, a temperature setting means for setting a desired vehicle interior temperature, and an air outlet for blowing air into the vehicle interior, at least a vent mode, A mode door that realizes an air conditioning mode of a level mode and a differential foot mode, an actuator that drives the mode door, and a control line that determines the position of the mode door in accordance with a temperature control parameter based on blown air temperature. Controlling the operation of the actuator, an auto switch for specifying an automatic control operation of the air outlet, a manual selection switch for switching the air outlet by the operation of the actuator and manually selecting an air conditioning mode, and When the automatic control operation is designated, the temperature control is performed based on the control line. Parameter vent mode the air conditioning mode in response to the increases, the bi-level mode, the differential
A signal that proceeds in the order of the foot mode is output to the actuator, and the air conditioning mode is changed to the differential foot mode, the bi-level mode,
Control means for outputting a signal returned in the order of the vent mode to the actuator, in the automotive air conditioner, a plurality of control lines for setting the air conditioning mode to a different mode even when the value of the temperature control parameter is the same. The control means has a storage means stored in advance, and the automatic control operation is performed when a manual operation to advance the air conditioning mode to the next air conditioning mode by the manual selection switch is performed during the automatic control operation of the air outlet. Is changed to a control line in which the next air conditioning mode is set even if the value of the temperature control parameter is the same, and automatic control of the outlet is performed according to the changed control line. While the operation is continued, during the automatic control operation of the air outlet, when a manual operation for returning the air conditioning mode to the previous air conditioning mode by the manual selection switch is performed, the automatic operation is performed. A control line which is a group performing control operation,
Even if the value of the temperature control parameter is the same, the air conditioning mode is changed to the control line in which the previous air conditioning mode is set, and the automatic control operation of the outlet is continued according to the changed control line. It is an air conditioner for automobiles. Further, the invention according to claim 3 sets a group of sensors for detecting environmental conditions such as a vehicle interior temperature, an outside air temperature, an engine water temperature, an amount of solar radiation and the like which affect the air conditioning in the vehicle interior, and a desired vehicle interior temperature. Temperature setting means, an intake door for realizing an intake mode of at least an inside air introduction mode, a semi-outside air introduction mode, and an outside air introduction mode by switching an intake port for taking in air, an actuator for driving the intake door, and an outlet wind temperature. Controlling the operation of the actuator based on a control line that determines the position of the intake door according to a temperature control parameter based on the auto switch that specifies an automatic control operation of the suction port; and operating the actuator to control the suction port. A manual selection switch for switching and manually selecting an intake mode, and an intake switch by the auto switch. When the automatic control operation of the mouth is designated, the intake mode is advanced in the order of the inside air introduction mode, the semi-outside air introduction mode, and the outside air introduction mode as the temperature control parameter increases based on the control line. Control means for outputting a signal to the actuator, and outputting to the actuator a signal that returns the intake mode in the order of the outside air introduction mode, the semi-outside air introduction mode, and the inside air introduction mode as the temperature control parameter decreases. The air conditioner for a vehicle having a plurality of control lines in which a plurality of control lines for setting the intake mode to different modes even when the value of the temperature control parameter is the same is stored in advance. During the automatic control operation, when a manual operation to advance the intake mode to the next intake mode by the manual selection switch is performed, the automatic control operation is performed. A control line serving as a base is changed to a control line in which the next intake mode is set even if the value of the temperature control parameter is the same, and automatic control of the suction port is performed according to the changed control line. While the operation is continued, during the automatic control operation of the suction port, when a manual operation for returning the intake mode to the previous intake mode by the manual selection switch is performed, a control line serving as a basis for performing the automatic control operation is defined by: Even if the values of the temperature control parameters are the same, the control line is changed to a control line in which the previous intake mode is set, and the automatic control operation of the suction port is continued according to the changed control line. It is an air conditioner for automobiles.

[0012]

When the automatic switch is pressed and the automatic control operation is designated, the control means sets the vehicle interior temperature based on the environmental conditions detected by the sensor group and the temperature set by the temperature setting means. , The operation of the air conditioner members such as the fan motor and the mode door is automatically controlled based on the control line that defines these operation characteristics. When the manual selection switch is operated during the automatic control operation, the control means changes the control line of the air conditioner member corresponding to the operated switch in accordance with the operation, and based on the changed control line, Thus, the automatic control operation of the air conditioning equipment member is continued. As a result, the intention of the occupant by the operation of the manual selection switch is included in the automatic control operation, the air conditioning state desired by the occupant is realized, and if the environmental conditions subsequently change, the air conditioning state is changed according to this change. Will be automatically controlled.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of an air conditioner for a vehicle according to an embodiment of the present invention, and FIG. 2 is a block diagram illustrating a control device of the embodiment.

An air conditioner 1 for an automobile shown in FIG.
Is a so-called automatic air conditioner, and the rotation of various doors 7, 13, 15a to 15c attached thereto and the driving of the fan motor 9 and the like are controlled by an auto amplifier 20 shown in FIG.
(Corresponding to control means).

As is well known, an air conditioner 1 for an automobile includes an intake unit 2 for selectively taking in the air in the vehicle interior or the outside air, a cooler unit 3 for cooling the air taken in, and an air conditioner for heating the air in the vehicle interior. And a heater unit 4 that blows out to a predetermined position, and these are connected in series.

The intake unit 2 is formed with an inside air inlet 6 for taking in the air in the passenger compartment and an outside air inlet 5 for taking in the outside air. An intake door 7 for selectively opening and closing these inlets 5 and 6 is opened and closed. It is provided freely. When the intake door 7 is turned to the outside air introduction position indicated by F in the figure, the intake mode is set to the outside air introduction mode for taking in only outside air, and when the intake door 7 is turned to the inside air introduction position shown by R in the figure, the intake mode takes in only inside air. The inside air introduction mode is set.
When the intake door 7 is turned to the intermediate position M excluding the outside air introduction position F and the inside air introduction position R, the intake mode is a semi-outside air introduction mode for taking in outside air and inside air at a ratio corresponding to the rotation position M. Becomes Further, a fan 8 driven by a fan motor 9 is provided to send the taken air to the downstream units 3 and 4. By adjusting the voltage applied to the fan motor 9, the rotation speed of the fan 8 changes and the fan airflow is controlled.

The cooler unit 3 has a built-in evaporator 10 through which the refrigerant circulates.
Performs heat exchange between a refrigerant and air to cool the air. The evaporator 10 forms a cooling cycle together with a compressor, a condenser, an expansion valve, and the like (not shown).

The heater unit 4 is provided with a heater core 12 for heating air so as to have a bypass passage 16. Engine coolant is circulated in the heater core 12, and the heater core 12 exchanges heat between the engine coolant and air to heat the air. The temperature of the air blown into the vehicle interior is determined by changing the ratio of the amount of air passing through the heater core 12 to the amount of air passing through the bypass passage 16.
A mix door 13 is provided on the front surface of 2 so as to be openable and closable. When the mix door 13 is turned to the full hot position indicated by H in the drawing, the air flows through the full heater core 12 to perform the maximum heating operation, and when the mix door 13 is turned to the full cool position shown by C in the drawing, the air flows into the full bypass passage 16. Through the maximum cooling operation. When the mix door 13 is turned to the intermediate position M excluding the full hot position H and the full cool position C, the air from the cooler unit 3 is supplied to the heater core 12 and the bypass passage 16 at a ratio corresponding to the turning position. And is adjusted to a predetermined temperature.

Downstream of the heater core 12, the heater core 1
A mixing chamber 17 is formed for mixing the hot air that has passed through 2 and heated and the cold air that has passed through the bypass passage 16. In order to take out air from the mixing chamber 17, a vent port 14a, a foot port 14b, and a defrost port 14c are provided.
Are provided in the heater unit 4. Vent port 14
The air from a is blown out toward the upper body of the occupant through a vent duct (not shown), and the air from the foot opening 14b is blown out toward the foot of the occupant through a foot duct (not shown). Then, the air from the defrost port 14c is blown out toward the inner surface of the window via a differential duct (not shown). Further, a vent door 15a, a foot door 15b, and a defrost door 15c (collectively referred to as "mode door 15") for opening and closing them are provided at each of the ports 14a to 14c so as to be freely opened and closed.

The air conditioning mode of the air conditioner 1 for a vehicle includes a vent mode (VENT) for blowing air toward the upper body of the occupant, a foot mode (FOOT) for blowing air toward the feet, and a bi-level mode for performing cold head thermal air conditioning. (B / L), differential mode (D
There are various modes such as EF) and a differential foot mode (D / F) that blows air toward the feet and the inner surface of the window.
These air conditioning modes are realized by switching the position of the mode door 15. For example, in the case of the vent mode, the foot door 15b and the defrost door 15c are respectively connected to the foot port 14b and the defrost port 14c.
And the vent door 15a opens the vent port 14a to the maximum.

As shown in FIG. 2, an output signal from a group of sensors 22 for detecting environmental conditions affecting air conditioning in the vehicle cabin is supplied to a CPU 21 incorporated in an auto amplifier 20 via an input / output unit (not shown). Is entered. Also, CPU2
From 1, a control signal is output via an input / output unit (not shown) to a circuit or an actuator for driving an air conditioner member such as the fan motor 9 and the intake door 7. Also, C
The PU 21 has a control panel 23 provided with switches for operating the operation of the auto air conditioner 1, and a RO
M, a storage means 24 such as a RAM are connected. Then, the auto amplifier 20 performs arithmetic processing on input signals from the sensor group 22 and switches, and comprehensively controls the control circuit and each actuator.

The sensor group 22 includes an inside air sensor 25 that converts the temperature in the vehicle compartment into a resistance value and detects the temperature, an outside air sensor 26 that converts the outside temperature into a resistance value and detects the temperature, and a resistance value that detects the air temperature after passing through the evaporator 10. An intake sensor 27 that converts the temperature into a value and detects the temperature, and a refrigerant temperature sensor that converts the temperature of the refrigerant at the inlet of the evaporator 10 into a resistance value and detects the value.
28, a solar radiation sensor 29 for converting the amount of solar radiation incident into the vehicle interior to a current value and detecting the same, a water temperature sensor 30 for converting the engine cooling water temperature to a resistance value and detecting the same, and the like. It is connected.

The CPU 21 includes a fan control circuit 31 for adjusting the voltage applied to the fan motor 9, an intake door actuator 32 for driving the intake door 7, a mix door actuator 33 for driving the mix door 13, and the mode door 15. A mode door actuator 34 to be driven, a compressor control unit 36 for performing on / off control of a compressor 35, and the like are connected.

The control panel 23 is provided with an operation section 40 in which various push-button switches are arranged, and a display section 41 for displaying the operating state of the air conditioner. The main functions of each switch provided in the operation unit are as follows.

The switch 42 is an OFF switch for stopping the operation of the fan 8 and the compressor 35.
When the FF switch 42 is pressed, the display on the display section 41 is all turned off, and the intake door 7 is moved to the outside air introduction position F.
Is rotated.

The switch 43 is an auto switch for designating an automatic control operation.
Are the economy switch 43a and the air conditioner switch 43b
When the economy switch 43a is pressed once, an automatic control operation with fuel saving control of the compressor 35 is performed, and when the economy switch 43a is pressed twice, the automatic control operation is performed with the compressor 35 always OFF. On the other hand, when the air conditioner switch 43b is pressed, the automatic control operation is performed with the compressor 35 kept ON. When the automatic control operation is designated, a display corresponding to the designation is displayed on the display unit 41.

The switch 44 is an outside air temperature switch for displaying the current outside air temperature on the display section 41 for a short time.

The switch 45 is a temperature setting switch as temperature setting means for setting a desired vehicle interior temperature, and has an up key 45a for increasing the set temperature and a down key 45b for decreasing the set temperature. These keys 45a, 4
Each time 5b is pressed once, the set temperature is changed, for example, by 0.5 ° C., so that the set temperature can be freely set within a range of, for example, 18.0 to 32.0 ° C. The keys 45a, 4
The temperature set by operating 5b is displayed on the display unit 41. When the target temperature is set, the sensor group 22
Whether the relationship between the condition determined by the input signal from the controller and the opening of the air mix door 13 is appropriate is calculated by the auto amplifier 20, and based on this value, the mix door 13 is set to the full hot H side, By moving or stopping to the C side, the opening of the air mix door 13 is controlled so as to always have an appropriate opening.

Further, a fan motor 9, an intake door 7, and a fan motor 9 are provided for realizing a plurality of air conditioning environments in the vehicle interior.
Various manual selection switches 50 to 52 for manually changing the operation of the air conditioner members such as the mode door 15 are provided on the operation unit 4.
0 is provided. In the illustrated example, as a manual selection switch, a fan switch 50 for manually selecting an air volume, an air outlet switch 51 for manually selecting an air-conditioning mode by the mode door 15, and an intake switch 52 for manually selecting an intake mode by the intake door 7 are provided. ing.

The fan switch 50 is capable of manually selecting the fan air flow by switching the voltage applied to the fan motor 9, and has an up key 50a for increasing the air flow and a down key 50b for decreasing the air flow. ing. In the case of the manual operation in which the auto switch 43 is not pressed, each time the keys 50a and 50b of the fan switch 50 are pressed, the rotation speed of the fan 9 is increased by one step in a range of 1st to 4th speed, for example. It is switched, and the fan air volume is freely selected. The manually selected fan air volume is displayed on the display unit 41.

The air outlet switch 51 can manually select an air conditioning mode by rotating the mode door 15 to a predetermined position by the mode door actuator 34. One of the air conditioning modes that changes in a predetermined order is one. It has an up key 51a for proceeding to the previous air conditioning mode and a down key 51b for returning to the previous air conditioning mode. In the case of manual operation in which the auto switch 43 is not pressed, each time the keys 51a and 51b of the outlet switch 51 are pressed, the air conditioning mode is set to, for example, VENT, B / L, F
The air conditioning mode is freely selected by switching between OOT and D / F step by step. The manually selected air conditioning mode is
It is displayed on the display unit 41.

The intake switch 52 allows the intake mode to be manually selected by rotating the intake door 7 to a predetermined position by the intake door actuator 32, and one of the intake modes that changes in a predetermined order. It has an up key 52a for proceeding to the previous intake mode and a down key 52b for returning to the previous intake mode. In the case of manual operation in which the auto switch 43 is not pressed, the key 52a of the inlet switch 52,
Each time the button 52b is pressed, the intake mode is switched one step at a time, for example, between inside air introduction, semi-outside air introduction, and outside air introduction, and the intake mode is freely selected. The manually selected intake mode is displayed on the display unit 41.

The operation unit 40 is provided with a differential switch 46 in consideration of operability when it is desired to remove fogging of the window. When this differential switch 46 is pressed,
The compressor 35 is turned on, the air conditioning mode is set to the DEF mode, and the intake mode is forcibly set to the outside air introduction mode. The forcibly set differential mode is displayed on the display unit 41.

In particular, in the auto amplifier 20 of the present embodiment, when the auto switch 43 is pressed to specify the automatic control operation, the manual selection switches (50 to 52) such as the fan switch 50 are operated. At times, the control line defining the operating characteristics of the fan motor 9 and the like is changed in accordance with the operation, and the automatic control operation of the fan motor 9 and the like is continued based on the changed control line. .

The thus configured auto amplifier 20
It works as follows.

The control of the fan air flow will be described. When the automatic switch 43 is pressed to specify the automatic control operation, the automatic control of the fan air flow is performed based on the standard control line S shown in FIG. Taking the absolute value of the difference between the set temperature and the current vehicle interior temperature as the temperature control parameter, when the temperature control parameter is large, that is, when the temperature difference between the set temperature and the current vehicle interior temperature is large, the fan motor 9 When the temperature control parameter is small, that is, when the temperature difference between the set temperature and the current vehicle interior temperature is small, the applied voltage to the fan motor 9 is reduced to increase the fan airflow. Decrease. In the middle range, the fan airflow is automatically reduced as the temperature control parameter decreases.

When the operator operates the fan switch 50, which is a manual selection switch, in the state of the automatic control operation, the auto amplifier 20 determines whether the up key 50a or the down key 50b is pressed. When it is determined that the up key 50a has been pressed, the control line is changed to the standard control line S.
The control flow is further changed to the right side in the figure, and the automatic control operation of the fan air volume is continued based on the changed control line (indicated by a two-dot chain line). As a result, if the values of the temperature control parameters are the same, a larger amount of air is blown into the vehicle compartment than in the case of automatic control based on the standard control line. Further, since the automatic control operation is continued, the air volume is not fixed, but the increase / decrease control of the air volume is automatically performed according to the change of the temperature control parameter.
Conversely, when it is determined that the down key 50b has been pressed, the control line is changed to the left side in the figure from the standard control line S, and based on the changed control line (indicated by a one-dot chain line), the automatic control of the fan air volume is performed. Continue control operation. As a result, if the values of the temperature control parameters are the same, a smaller amount of air is blown into the vehicle compartment than in the case of automatic control based on the standard control line. Further, instead of fixing the air flow, the control for increasing / decreasing the fan air flow is automatically performed according to the change of the temperature control parameter. Also, key 50
When a and 50b are pressed a plurality of times, the control line is further changed in accordance with the number of times. These control lines are stored in the storage unit 24 in advance.

FIG. 4 shows a control line for performing an automatic control operation of the outlet (air conditioning mode), and FIG. 5 shows a control line for performing an automatic control operation of the suction port (intake mode). .
As the temperature control parameter in these cases, the temperature of the blown air determined by the opening degree of the mix door 13, the temperature detected by the intake sensor 27, and the like is usually adopted.

For example, when the operator presses the down key 51b of the outlet switch 51, which is a manual selection switch, in a state where the outlet is automatically controlled, the control line is shifted to the right of the standard control line S in the figure. And the automatic control operation of the outlet is continued based on the changed control line. As a result, if the values of the temperature control parameters are the same, the VENT mode can be set more easily than in the case of the automatic control based on the standard control line S. In accordance with the change of the adjustment parameter, the switching control of the air outlet, that is, the air conditioning mode, is automatically performed.

When the operator presses the up key 52a of the suction port switch 52, which is a manual selection switch, while the suction port is under the automatic control operation, the control line is shifted from the standard control line S to the left side in the figure. And the automatic control operation of the suction port is continued based on the changed control line. Thus, if the values of the temperature control parameters are the same, the outside air introduction mode is more easily set than in the case of the automatic control based on the standard control line S.
The intake mode is not fixed, but the switching of the intake port, that is, the intake mode, is automatically controlled according to the change of the temperature control parameter.

As described above, the automatic air conditioner 1 of this embodiment
Then, when the automatic switch 43 is pressed to specify the automatic control operation, the automatic control operation is always performed unless the automatic control operation is released, and the manual selection switches 50 to 52 are operated during the automatic control operation. In this case, the intention of the occupant by operating the manual selection switches 50 to 52 is included in the automatic control operation by changing the control line. That is, in the automatic air conditioner 1, the occupant's intention is prioritized, and the automatic control state is maintained. According to this control, the occupant's intention for the automatic control operation can be realized by the deviation or the like.
When the operator operates 0 to 52, the air-conditioning state desired by the occupant is realized, and further, the air-conditioning state is automatically controlled to an optimum state according to a change in the environmental conditions thereafter, so that the occupant feels discomfort. Does not occur. Further, since the automatic control operation is always performed unless the automatic control operation is released, it is necessary to return the automatic air conditioner 1 to full auto or to operate the manual selection switches 50 to 52 again as in the related art. Therefore, the operation is not complicated.

Even if the auto amplifier 20 is configured in this manner, the conventional air conditioning control does not significantly change. In addition, if the operation states of the manual selection switches 50 to 52 are sequentially stored in the storage means 24, simple learning control can be performed, and it is easy to provide an optimal automatic control operation that the occupant prefers.

Although the illustrated switches are of the push button type, they may be of the dial type. Further, a predetermined operation procedure for returning the changed control line to the standard control line S or a dedicated reset switch may be provided. Furthermore,
Although the case where the present invention is applied to all of the fan air volume control, the outlet control, and the suction port control has been described, at least one of the air conditioning equipment members may operate as described above.

[0044]

As described above, according to the vehicle air conditioner of the present invention, when the manual selection switch is operated during the automatic control operation, the intention of the occupant by the operation of the manual selection switch is automatically controlled. Therefore, it is possible to prevent an occupant from feeling uncomfortable or complicated operation.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an air conditioner for a vehicle according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a control device of the embodiment.

FIG. 3 is a diagram showing control characteristics of a fan air volume in the embodiment.

FIG. 4 is a diagram showing control characteristics of an outlet in the embodiment.

FIG. 5 is a view showing control characteristics of a suction port in the embodiment.

FIG. 6 is a diagram showing control characteristics of a fan air volume in a conventional auto air conditioner.

[Explanation of symbols]

7 ... intake door 8 ... fan 9 ... fan motor 15 ... mode door 32 ... intake door actuator (actuator) 34 ... mode door actuator (actuator) 20 ... autoamplifier (control means) 22 ... sensor group 24 ... storage means 43 ... auto Switch 45: Temperature setting switch (temperature setting means) 50: Fan switch (manual selection switch) 51: Air outlet switch (manual selection switch) 52: Suction port switch (manual selection switch) 50a, 51a, 52a: Up key 50b 51b, 52b: Down key S: Standard control line

Claims (3)

(57) [Scope of request for utility model registration] 1. A sensor group (22) for detecting environmental conditions such as a vehicle interior temperature, an outside air temperature, an engine water temperature, and an amount of solar radiation which affect air conditioning in a vehicle interior, and a temperature setting means for setting a desired vehicle interior temperature. (45), a fan motor (9) for driving a fan (8), and a value of a temperature control parameter based on a temperature difference between the set temperature set by the temperature setting means (45) and the current vehicle interior temperature. An auto switch (43) for controlling an operation of the fan motor (9) based on a control line that determines an applied voltage to the fan motor (9) in response thereto and designating an automatic control operation of a fan air volume; A manual selection switch (50) for manually selecting a fan air flow rate by operation of the motor (9); and an automatic control operation of the fan air flow rate specified by the auto switch (43). Based on your line,
Outputting to the fan motor (9) a signal for increasing the fan air volume as the temperature control parameter increases;
Control means (20) for outputting to the fan motor (9) a signal for reducing the fan air volume as the temperature control parameter decreases, wherein the value of the temperature control parameter is A storage means (24) in which a plurality of control lines for making the fan air flow different even if the air flow is the same is stored in advance, and the control means (20) performs the manual selection during the automatic control operation of the fan air flow. When a manual operation for increasing the fan airflow is performed by the switch (50), the control line on which the automatic control operation is performed is set to a larger airflow even if the value of the temperature control parameter is the same. While the automatic control operation of the fan air flow is continued according to the changed control line, while the automatic selection switch is operated during the automatic control operation of the fan air flow. When a manual operation to reduce the fan airflow is performed according to 50), the control line on which the automatic control operation is performed is controlled such that the fan airflow is set to a smaller airflow even if the value of the temperature control parameter is the same. The air-conditioning apparatus for an automobile, wherein the air-conditioning apparatus is changed to a line and the automatic control operation of the fan air volume is continued according to the changed control line. 2. A sensor group (22) for detecting environmental conditions such as a vehicle interior temperature, an outside air temperature, an engine water temperature, and an amount of solar radiation which affect air conditioning in the vehicle interior, and a temperature setting means for setting a desired vehicle interior temperature. (45) a mode door (15) for realizing at least a vent mode, a bi-level mode and an air conditioning mode of a differential foot mode by switching an air outlet for blowing air into a vehicle interior; and the mode door (15). Actuator to drive (3
And 4) controlling the operation of the actuator (34) based on a control line that determines the position of the mode door (15) according to a temperature control parameter based on the blown air temperature, and designates an automatic control operation of the outlet. An automatic switch (43), a manual selection switch (51) for manually selecting an air conditioning mode by switching an air outlet by operating the actuator (34), and an automatic control operation of the air outlet by the auto switch (43). When designated, the actuator (34) sends a signal to advance the air conditioning mode in the order of vent mode, bi-level mode, and differential foot mode based on the control line as the temperature control parameter increases. The air conditioning mode is changed to the differential foot mode, the bi-level mode, and the vent mode as the temperature control parameter decreases. It said actuator a signal back in the order of mode (34)
And a control means (20) for outputting to the control means (20) a plurality of control lines for setting the air conditioning mode to a different mode even if the value of the temperature control parameter is the same. 24), wherein the control means (20) is configured to control the manual selection switch (5) during the automatic control operation of the outlet.
When a manual operation for moving the air conditioning mode to the next air conditioning mode is performed according to 1), the control line on which the automatic control operation is performed is changed to the next air conditioning even if the value of the temperature control parameter is the same. Change to the control line where the mode is set,
While the automatic control operation of the outlet is continued according to the changed control line, the automatic selection switch (5) is operated during the automatic control operation of the outlet.
When a manual operation for returning the air-conditioning mode to the immediately preceding air-conditioning mode is performed according to 1), the control line on which the automatic control operation is performed is changed to the previous air-conditioning mode even if the value of the temperature control parameter is the same. An air conditioner for a vehicle, wherein the mode is changed to a control line in which a mode is set, and the automatic control operation of the air outlet is continued according to the changed control line. 3. A sensor group (22) for detecting environmental conditions such as a vehicle interior temperature, an outside air temperature, an engine water temperature, and an amount of solar radiation which affect air conditioning in the vehicle interior, and a temperature setting means for setting a desired vehicle interior temperature. (45) and an intake door (7) for realizing at least an intake mode of an inside air introduction mode, a semi-outside air introduction mode, and an outside air introduction mode by switching an intake port for taking in air.
An actuator (32) for driving the intake door (7); and an actuator (32) for driving the actuator (32) based on a control line that determines the position of the intake door (7) according to a temperature control parameter based on the blown air temperature. An auto switch (43) for controlling the operation, which specifies an automatic control operation of the suction port, a manual selection switch (52) for switching the suction port by operating the actuator (32) and manually selecting the suction mode, When the automatic control operation of the suction port is designated by the auto switch (43), the intake mode is set to the inside air introduction mode, the semi-outside air introduction mode, and the temperature control parameter is increased based on the control line. A signal for proceeding in the order of the outside air introduction mode is output to the actuator (32), and as the temperature control parameter decreases, Control means (20) for outputting a signal for returning the intake mode in the order of the outside air introduction mode, the semi-outside air introduction mode, and the inside air introduction mode to the actuator (32). Has a storage means (24) in which a plurality of control lines for setting the intake mode to different modes even when the value of the intake port is the same, wherein the control means (20) The manual selection switch (5
When a manual operation for moving the intake mode to the next intake mode is performed according to 2), the control line serving as the basis for performing the automatic control operation is changed to the next intake mode even if the value of the temperature control parameter is the same. Change to the control line where the mode is set,
While the automatic control operation of the suction port is continued according to the changed control line, the automatic selection switch (5) is operated during the automatic control operation of the suction port.
When a manual operation for returning the intake mode to the immediately preceding intake mode is performed according to 2), the control line serving as the basis for performing the automatic control operation is changed to the previous intake mode even if the value of the temperature control parameter is the same. An air conditioner for an automobile, wherein the mode is changed to a control line in which a mode is set, and the automatic control operation of the suction port is continued according to the changed control line.