JPH0558148A - Air-conditioning device for automobile - Google Patents

Abstract

PURPOSE:To improve comfortableness of a passenger in such a way that the feeling of variation of an combination state is provided for the passenger by automatically changing the discharge state of a discharge port in synchronism with manual selection when the combination state of the discharge port is manually selected by the passenger. CONSTITUTION:Through the working of a control device 31, an air-conditioning device body 1 performs air-conditioning drive according to heat environment information, such as a detected room temperature, a set room temperature, an open air temperature, a solar radiation amount. In this case, the combination state of a plurality of discharge ports 14-16 is varied to a bench mode or a high level mode through manual selection by passenger. In this case, by driving an air direction setter 40 by a control device 31 in synchronism with manual selection, the discharge state of a ventilator discharge port 14 is automatically varied so that it is brought into a centralized discharge state and a diffusion discharge state. Since the feeling of variation of the combination state of a plurality of the discharge ports 14-16 is effectively provided for the passenger, this constitution improves comfortableness.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when an occupant manually selects an outlet through which conditioned air is blown, synchronizes the conditioned air outlet state of the selected outlet with the above-mentioned manual selection of the outlet. The present invention relates to an air conditioner for an automobile, in which the comfort is improved by automatically changing it.

[0002]

2. Description of the Related Art In a conventional automobile air conditioner, as shown in FIG. 6, a detection room temperature T _IC and a set room temperature T are selected from a plurality of air outlets such as a ventilator outlet, a defroster outlet or a foot outlet. _A control for automatically selecting a specific outlet for blowing out conditioned air based on thermal environment information such as _SET , ambient temperature T _A, and solar radiation Q _SUN is known. This control reads thermal environment information such as the detected room temperature T _IC , the set room temperature T _SET , the outside air temperature T _A, and the amount of solar radiation Q _SUN (step 203), and the temperature difference ΔT between the detected room temperature T _IC and the set room temperature T _SET. The blower fan motor applied voltage V _FAN is set by T _IC -T _SET (step 203),
Calculating a target discharge air temperature T _OF by the thermal environment information read by the constant A~H and the step 203 has been set in advance in step 202 (step 204), this calculated target blowout air temperature T _OF The air outlet mode indicating the air mix door opening degree X and the combination state of the air outlets is determined (steps 206 and 207). In determining the outlet mode in step 207,
In order from the higher target air temperature T _OF, the foot mode blows out the conditioned air only from the foot outlet, the bi-level mode that blows the conditioned air from both the foot outlet and the ventilator outlet, and the air conditioner only from the ventilator outlet. The vent mode to blow out is automatically determined.

Further, in an air conditioner for an automobile, for example, as disclosed in Japanese Patent Laid-Open No. 57-107912, the blown state of the conditioned air at the blowout port is detected at room temperature T.
It is also known to automatically select the _IC and thermal environment information such as the set room temperature T _SET . This automatically changes the orientation of the louver installed in the ventilator outlet due to the heat load such as the temperature difference ΔT between the detected room temperature T _IC and the set room temperature T _SET . According to this, since the temperature difference ΔT is large, when the heat load is high, the conditioned air is concentrated and blown to the target occupant from the ventilator outlet.
On the contrary, since the temperature difference ΔT is small, when the heat load is low, the conditioned air is diffused and blown out from the ventilator outlet to a wide area including the target occupant in the vehicle interior. That is, the louver is moved by the heat load, and the blowing mode is selected so that the blowing mode as the blowing state of the conditioned air at the ventilator blowing port becomes the optimal blowing mode.

Therefore, by combining the automatic selection of the blowout port mode and the automatic selection of the blowout mode, the target blown air temperature T _OF can be obtained during cooling.
If the heat load is high, like low cooldown,
While the conditioned air is concentrated and blown from the ventilator outlet to the target occupant, when the heat load is low, such as when the target outlet air temperature T _OF is high and stable, the conditioned air is delivered from the ventilator outlet to the inside of the vehicle. It can be diffused and blown out in a wide area including an occupant.

[0005]

However, even when the above-described automatic selection of the outlet mode and the automatic selection of the outlet mode are combined, depending on the temperature distribution in the passenger compartment and the occupant's preference of the air conditioning conditions, etc. The occupant may change the automatically selected outlet mode by manual operation, and when the ventilator outlet is selected by the manual operation by the occupant, the target occupant may not be able to experience sufficient comfort. For example, when heating, the foot mode is selected by automatic selection of the outlet mode,
While the conditioned air was blowing from the foot outlet, warm air stagnated near the head of the target occupant in the passenger compartment, causing the target occupant to experience a “muddy mood”. Consider a situation in which the foot mode is changed to the bent mode. In such a situation, the target occupant normally expects to intensively blow out the conditioned air in the vicinity of the head and remove the haze as quickly as possible. However, according to the automatic selection of the blowout mode described above, when the air conditioner is stable, it becomes a diffusion blowout mode in which the conditioned air is diffused and blown out in a wide range including the target occupant in the vehicle interior. There is a problem that you cannot immediately experience the comfort after the change.

Therefore, according to the present invention, when the combination state of a plurality of outlets is changed by the manual selection of the occupant, the conditioned air blowing state of the selected specific outlet is selected by the occupant's manual selection. An object of the present invention is to improve comfort by giving an occupant a feeling of changing a combination state of a plurality of blowout openings by a manual selection by automatically changing in synchronization with an operation.

[0007]

SUMMARY OF THE INVENTION The present invention relates to an air conditioner for an automobile, in which air-conditioned air whose temperature is adjusted according to thermal environment information is blown into a vehicle compartment from a plurality of outlets to air-condition the vehicle compartment. An outlet selection means for selecting a combined state of the outlets for blowing out the conditioned air from the plurality of outlets by manual selection by an occupant or automatic selection based on the thermal environment information, and an occupant targeting the conditioned air from the outlets And a wind direction setting means that can be changed to a concentrated blowout state that concentrates and blows out on a wide area including a target occupant in a vehicle interior,
A blowout state changing means for outputting a blowout mode change signal of the conditioned air to the wind direction setting means in synchronization with a change from automatic selection to manual selection of the combination state of the blowout openings.

[0008]

When the combination state of a plurality of outlets is changed by automatic operation based on thermal environment information by manual selection by an occupant, the outlet state changing means operates in synchronization with the manual selection by the operation of the outlet selecting means. By outputting the blowing mode change signal to the wind direction setting means, the blowing state of the conditioned air from the blowing port is also a concentrated blowing state in which the conditioned air is blown out to the target occupant and a wide area including the target occupant in the vehicle interior. It is automatically changed so that it will be in a diffused blowing state.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the entire air conditioning system for an automobile according to an embodiment. This air conditioner body 1 of the automobile air conditioner
The vehicle is provided with an inside air introduction port 2 for introducing the air in the vehicle interior and an outside air introduction port 3 for introducing the outside air by receiving the traveling wind pressure. An intake door 4 is provided at a branch portion between the inside air inlet 2 and the outside air inlet 3. This intake door 4 is controlled by an intake door actuator 5 driven by a control device 31 so that the inside air introduction port 2 and the outside air introduction port 3 are connected.
Open and close selectively. A blower fan 6 is provided on the downstream side of the inside air inlet 2 and the outside air inlet 3. The blower fan 6 is rotationally driven by a blower fan motor 7 as an actuator driven by the control device 31. On the downstream side of the blower fan 6, an evaporator 8 for cooling the air passing therethrough with a refrigerant supplied from a refrigeration cycle including a compressor, a condenser, an expansion valve and the like (not shown) is provided. On the downstream side of the evaporator 8,
A heater core 9 is provided to warm the passing air with hot water supplied from a heating cycle including an engine (not shown) and a hot water cock. On the upstream side of the heater core 9,
An air mix door 11 is provided. In this air mix door 11, the air that has cooled by passing through the evaporator 8 bypasses the heater core 9 and passes through the evaporator 8 by the air mix door actuator 12 driven by the control device 31. It is opened and closed so as to adjust the ratio of the cold air that has been warmed by passing through the heater core 9. On the downstream side of the heater core 9, an air mix chamber 13 is provided as a room for producing temperature-controlled conditioned air by improving the mixing of the cold air and the warm air. In the air mix chamber 13, a ventilator outlet 14 that blows conditioned air toward the upper body of the target occupant (not shown), a defroster outlet 15 that blows conditioned air toward the windshield (not shown), and the occupant of the target occupant A foot outlet 16 that blows out conditioned air is provided continuously at the feet. A ventilator door 17, a defroster door 19 and a foot door 21 are provided in the air mix chamber 13. The ventilator door 17 opens and closes the ventilator outlet 14 by a ventilator door actuator 18 driven by the control device 31. The defroster door 19 opens and closes the defroster blowout port 15 by a defroster door actuator 20 driven by the control device 31. The foot door 21 opens and closes the foot outlet 16 by a foot door actuator 22 driven by a control device 31. Further, a plurality of ventilator outlets 14 are provided in the instrument panel 23 so as to be separately arranged on the left and right in the vehicle width direction. An airflow direction setting device 40 shown in FIG. 2 is provided at each of the ventilator outlets 14.

Further, the control device 31 formed in the microcomputer of the automobile air conditioner shown in FIG. 1 includes a room temperature sensor 26, a room temperature setting device 27, an outside air temperature sensor 28, a solar radiation amount sensor 29, and a blown air temperature sensor 30. Based on the thermal environment information from the thermal environment information input means 25, the target air-conditioning conditions such as the target blowing air temperature T _OF , the blower fan motor applied voltage V _FAN and the air mix door opening X are calculated, and the air conditioning in the vehicle interior is performed. The air conditioner body 1 is driven so that the condition maintains the calculated target air conditioning condition. By this drive, the air conditioner body 1 produces temperature-controlled conditioned air.

In parallel with this, the outlet selection means 32 incorporated in the control device 31 performs manual selection by manual operation of an outlet selection switch (not shown) of the occupant.
By either one of the above-mentioned automatic selection based on the target blow-out air temperature T _OF , the ventilating blow-out opening 14, the defroster blow-out opening 15, the foot blow-out opening 16 and the like serving as a plurality of blow-out openings can be used to blow out the conditioned air. Select the combination state. In this embodiment, the combination state of the air outlets for blowing out the conditioned air, that is, the air outlet mode is the vent mode, the bi-level mode, the foot mode, etc., which are described below.

In the vent mode, the ventilator door 17 opens the ventilator outlet 14 and the defroster door 1 is opened.
9 closes the defroster outlet 15 and the foot door 21
Closes the foot outlet 16. As a result, the conditioned air is blown out only from the ventilator outlet 14.

In the bilevel mode, the ventilator door 1
7 opens the ventilator outlet 14, the defroster door 19 closes the defroster outlet 15, and the foot door 21 opens the foot outlet 16. As a result, the air-conditioning air flows through the ventilator outlet 14 and the foot outlet 1
Blow out from 6.

In the foot mode, the ventilator door 17 closes the ventilator outlet 14, and the defroster door 1
9 opens the defroster outlet 15 and opens the foot door 21.
Opens the foot outlet 16. As a result, the conditioned air is blown out from the defroster outlet 15 and the foot outlet 16.

Then, the air outlet selection means 32 selects an air outlet mode such as a vent mode, a bi-reval mode, or a foot mode to blow out the above-mentioned conditioned air from the specified air outlet to air-condition the vehicle interior. ..

Further, when the vent mode or the bi-reval mode is selected by the function of the outlet selection means 32, the outlet state setting means 33 incorporated in the control device 31 causes the target outlet air temperature T _OF. Due to
The wind direction setting device 40 incorporated in the ventilator blowout port 14 is driven by selecting a blowout mode such as a concentrated blowout mode or a diffusion blowout mode as a blowout state of the conditioned air from the ventilator blowout port 14. As a result, the conditioned air blown out from the ventilator blowout port 14 is concentrated on the target occupant (not shown) (concentrated blowout mode) or diffused over a wide area including the target occupant in the vehicle interior. It will be in a state of being blown out (diffusion blowing mode).

Further, when the selection of the outlet mode is changed from the automatic selection to the manual selection, the control device 3
The blowout state changing means 34 incorporated in 1 determines the air conditioning conditions in the vehicle interior at the time of cool down, warm up, or stable, based on the target air temperature T _OF of the air blown, and responds to the air conditioning conditions in the vehicle interior. Then, in synchronization with the change from the automatic selection to the manual selection, an air-conditioning air blowing mode change signal is sent through the blowing state setting means 33 to the wind direction setting device 40.
The air-conditioning air blowing mode at the ventilator outlet 14 is automatically changed to the concentrated blowing mode or the diffusion blowing mode.

FIG. 2 shows the ventilator outlet 14.
The wind direction setting device 40 provided in FIG. The wind direction setting device 40 has a plurality of louvers 41 that are arranged in the ventilator outlet 14 so as to be separated from each other in the lateral direction of the vehicle and rotatably in the left and right horizontal directions. Louver 41
Are connected to each other by an upper link plate 42 and a lower link plate 43. The lower link plate 43 is provided with a guide pin 44 penetrating the duct bottom wall forming the ventilator outlet 14. The end portion of the guide pin 44 is slidably engaged with a bent groove-shaped guide rail 46 formed on the peripheral surface of the roller 45. The roller 45 is rotatably attached to a bracket 48 provided on the outer side of the bottom wall of the duct forming the ventilator outlet 14 by means of a support shaft 47 projecting axially from both end surfaces of the roller 45. A gear 51 fixed to the output shaft of a wind direction motor 50 driven by the control device 31 is meshed with a gear 49 fixed to one support shaft 47 of the roller 45. The wind direction motor 50 is attached to a bracket 52 provided outside the bottom wall of the duct forming the ventilator outlet 14. Therefore,
In the wind direction setting device 40, when the wind direction motor 50 is driven to rotate, the roller 45 is driven to rotate, and the guide pin 44 is moved in the left-right direction by the guide rail 46 of the roller 45.
With the louver 41 inside the ventilator outlet 14,
It rotates in the left-right direction shown by the arrow in FIG. As a result, the conditioned air blown out from the ventilator outlet 14 is
Concentrated speech bubble mode that concentrates on target occupants
Alternatively, the air is blown out into the vehicle interior in a diffusion blowing mode in which the air is blown out into a wide area including the target occupant in the vehicle interior.

That is, the instrument panel 23
A plurality of ventilator outlets 14 provided in
Left and right with respect to one passenger outside the figure seated in the front seat 24
In the concentrated blowing mode, the plurality of louvers 41 in each of the two left and right ventilator blowing ports 14 for one target occupant become substantially parallel in the centralized blowing mode by controlling the rotation amount of the wind direction motor 50. By facing inward, the conditioned air is guided into the plurality of louvers 41 and is blown into the passenger compartment from the ventilator outlet 14 while being concentrated on the target occupant. Further, in the diffusion blowing mode, by controlling the rotation amount of the wind direction motor 50, the plurality of louvers 41 in each of the two left and right ventilator outlets 14 with respect to one target occupant become substantially parallel and face in the vehicle front-rear direction. While being guided by the plurality of louvers 41, the conditioned air is blown out from the ventilator outlet 14 to a wide area in the vehicle compartment including the target occupant.

Next, the operation of the embodiment will be described with reference to the flow charts shown in FIGS.

When an occupant turns on an air conditioning switch (not shown), the control device 31 is activated to supply the refrigerant from the refrigeration cycle (not shown) to the evaporator 8 and hot water to the heater core 9 from the heating cycle (not shown). (Step 1
01). In parallel with this, the control device 31 controls the constants A to H.
Is read from the storage memory and set in the arithmetic memory, and the room temperature sensor 26 as the thermal environment information input means 25 is read.
A room temperature setting device 27, an outside air temperature sensor 28, and a solar radiation sensor 2
9. Thermal environment information such as the detected room temperature T _IC , the set room temperature T _SET , the outside air temperature T _A , the amount of solar radiation Q _SUN, and the detected blown air temperature T _{D, which} are output signals from 9 and the blown air temperature sensor 30, are read (step 102, 103). Subsequently, the temperature difference ΔT between the detected room temperature T _IC and the set room temperature T _SET is calculated, and this temperature difference ΔT
The blower fan motor applied voltage V _FAN corresponding to is determined (step 104). The detection and the outside air temperature T _A that are loaded with constants A~E and steps 103 set in step 102 RT T _IC and set room temperature T _SET and the solar radiation amount Q
And _SUN, the target outlet air _{temperature-; T OF = A · T A} + B · T
_The target blowing air temperature T _OF is calculated by substituting _IC + C · T _SET + D · Q _SUN + E (step 105), and the target blowing air temperature T _OF and the constants F to H set in step 102 are calculated. , Air mix door opening type; X = F · T _OF
Substituting into ² + G · T _OF + H, the air mix door opening X is calculated (step 106). After this, the control device 3
1 outputs a control signal corresponding to the blower fan motor applied voltage V _FAN to the blower fan motor 7 (step 114), and outputs a control signal corresponding to the air mix door opening X to the air mix door actuator 12. (Step 114), the temperature of the air conditioner body 1 is adjusted by the rotation of the blower fan 6, the opening degree of the air mix door 11, the cooling of the evaporator 8, the heating of the heater core 9 and the mixing in the air mix chamber 13. Air-conditioning air is blown into the vehicle interior from the ventilator outlet 14, the defroster outlet 15, the foot outlet 16 and the like to air-condition the interior of the vehicle.

The case where the outlet mode is automatically selected and the case where the outlet mode is manually selected will be described separately.

(1) When the outlet mode is automatically selected, that is, when the outlet selection switch (not shown) is off and the outlet mode is automatically selected (NO in step 107). ) Is the target outlet air temperature T calculated by the outlet selection means 32.
_{The OF} is collated with the knowledge that predefines the relationship between the target outlet air temperature and the outlet mode preset in the control device 31,
From the vent mode, the bi-level mode, and the foot mode of this knowledge, one outlet mode corresponding to the calculated target outlet air temperature T _OF is determined (step 10).
8).

(A) Then, when the foot mode is determined from the target blowing air temperature T _OF (step 109: YE
In S), since the wind direction setting device 40 is not provided in the foot outlet 16, it is not necessary to change the blowing state of the conditioned air blown from the outlet 16, so that the determined foot mode is the outlet mode. To the memory of the balloon state changing means 34 as the balloon mode before the change (step 113), and the controller 31
Outputs the control signal for the foot mode to the ventilator door actuator 18, the defroster door actuator 20, and the foot door actuator 22 (step 114). As a result, the ventilator door 17 closes the ventilator outlet 14, the defroster door 19 opens the defroster outlet 15, and the foot door 21 opens the foot outlet 16. Therefore, the conditioned air produced in the air mix chamber 13 is blown from the defroster outlet 15 and the foot outlet 16 to the feet of the target occupant.

(B) When the bi-level mode or vent mode is determined from the target blow-out air temperature T _OF (NO in step 109), the blow-out mode which is the determined bi-level mode or vent mode is set to the blow-out state. The memory of the change means 34 is updated as the outlet mode before the change (step 113), and the control signal for the bi-level mode or the vent mode is changed to the ventilator door actuator 18 and the defroster door actuator 20.
To the foot door actuator 22 (step 114). Specifically, in the bilevel mode, the ventilator door 17 is the ventilator outlet 1.
4, the defroster door 19 closes the defroster outlet 15, and the foot door 21 opens the foot outlet 16. Further, in the vent mode, the ventilator door 17 opens the ventilator outlet 14, the defroster door 19 closes the defroster outlet 15, and the foot door 21 closes the foot outlet 16. In this bi-level mode or vent mode, the blowout state setting means 33 sets the blowout state of the conditioned air blown from the ventilator blowout port 14 based on the thermal environment information. In parallel with the determination of the mode, the outlet state setting means 33
The absolute value of the temperature difference ΔT = T _IC −T _SET between the calculated detected room temperature T _IC and the set room temperature T _SET is determined. Then, when the absolute value of the obtained temperature difference ΔT is less than the centralized diffusion determination reference temperature T _C = 4 ° C., which is the determination reference value between the concentrated outlet mode and the diffusion outlet mode when the outlet mode is automatically selected (step 110: Since the temperature difference ΔT between the current detected room temperature T _IC and the set room temperature T _SET is small and the thermal load in the vehicle compartment is low, the diffusion blowout mode is determined (step 111). On the contrary,
The absolute value of the temperature difference ΔT is the concentration diffusion determination reference temperature T _C
= 4 ° C or higher (NO in step 110),
Since the temperature difference ΔT between the present detected room temperature T _IC and the set room temperature T _SET is large, which means that the heat load in the vehicle compartment is high, the concentrated blowing mode is determined (step 112).

That is, in the case of the bi-level mode or the foot mode, when the absolute value of the temperature difference ΔT is less than the concentrated diffusion determination reference value T _c , the control device 31 sends a control signal of the diffusion blowing mode to the wind direction setter 40. Wind direction motor 5
0 (step 114). As a result, two left and right ventilator outlets 1 for one target occupant
4. A plurality of louvers 41 of the wind direction setting device 40 incorporated in
However, the air-conditioning wind blown from the ventilator blow-out port 14 in a substantially parallel direction toward the front-rear direction of the vehicle body is blown as a soft wind to a wide area including the target occupant in the vehicle interior.

In the bi-level mode or vent mode, when the absolute value of the temperature difference ΔT is equal to or higher than the centralized diffusion determination reference value T _c , the control device 31 sends a control signal for the centralized blowing mode to the wind direction setter 40. Wind direction motor 50
(Step 114). As a result, the left and right ventilator outlets 14 for one target occupant
A plurality of louvers 41 of the wind direction setting device 40 incorporated in the
However, the conditioned air blown from the ventilator blow-out port 14 is directed substantially in parallel to the inside, and is blown out to the target occupant in a concentrated manner.

(2) When the outlet mode is manually selected, that is, when the outlet selection switch (not shown) is on and the outlet mode is manually selected (YES in step 107). ), The blowing state changing means 34 determines whether to change the blowing mode.

(B) If the outlet mode has not been changed (NO at step 115), the air-conditioning air blown from the outlet is changed to change the outlet mode by the manual selection. Since it is not necessary to give it to the air conditioner, the air conditioning air is blown into the vehicle compartment from the air outlet corresponding to the manually selected air outlet mode by the processing of steps 109 to 114 described above.

(B) On the contrary, when the outlet mode is changed (YES in step 115), the counting of the outlet mode change elapsed time t _c is started (step 116) and the outlet before the change is started. The mouth mode is read from the memory of the balloon state changing means (step 117). Continuing, the above-mentioned time-out time t
_c is the wind direction fixed time t preset in the control device 31
₀ (time set after the combined state of the outlets is changed, and by changing the blown state of the conditioned air with the fixed wind direction time t ₀ , the target occupant can fully feel the change) = 60 seconds or more is determined (step 118).

When the measured outlet time mode change elapsed time t _{c which} has been measured has passed the wind direction fixed time t ₀ = 60 seconds or more (YES in step 118), a feeling of changing the combination state of the outlets is felt. Since it is necessary to control the blowing condition of the conditioned air by the temperature difference ΔT to maintain the occupant's comfort, the conditioned air is blown from the blowing port according to the manually selected blowing mode by the processing of steps 109 to 114 described above. It is blown into the passenger compartment.

On the contrary, when the measured outlet time mode change elapsed time t _c is less than the wind direction fixed time t ₀ = 60 seconds (step 118), the occupant of the target is given a feeling of changing the outlet outlet combination state. In order to make it feel, it is judged whether the outlet mode after the change by the manual selection is the foot mode (step 119).

Then, when the outlet mode after the change by the manual selection is the foot mode (step 119 is YE
In S), the balloon state changing means 34 updates the outlet mode after the change as the outlet mode before the change in the memory of the outlet state changing means 34 (step 113).
The control device 31 outputs a foot mode control signal to the ventilator door actuator 18, the defroster door actuator 20, and the foot door actuator 22 (step 114). As a result, the ventilator door 17 closes the ventilator outlet 14, the defroster door 19 opens the defroster outlet 15, and the foot door 21 opens the foot outlet 16. Therefore, the conditioned air produced in the air mix chamber 13 is blown from the defroster outlet 15 and the foot outlet 16 to the feet of the target occupant.

On the contrary, when the outlet mode after the manual selection is changed to the bi-level mode or the vent mode (NO in step 119), the calculated target outlet air temperature T _OF is heating. Warm / cool determination reference temperature T ₀ = 25 ° preset as a determination reference value for cooling or cooling
If the temperature is less than the above and cooling is performed (YES in step 120), it is determined whether the outlet mode is changed from the vent mode to the bi-level (step 121).

When the outlet mode is changed from the vent mode to the bi-level mode (step 12)
(1 is YES) means that the target occupant has excessively cooled the upper half of the body during cooling, and therefore the blowout port mode is manually changed from the vent mode to the bilevel mode. The mode is determined (step 121), and the manually selected bi-level mode outlet mode is updated in the memory of the outlet state changing means 34 as the outlet mode before the change (step 113).
The blowout mode change elapsed time t _c outputs a control signal to the wind direction motor 50 of the wind direction setter 40 for the preset wind direction fixed time t ₀ = 60 seconds, which is a diffusion blow mode (NO in step 118), The control device 31 outputs a control signal for the bilevel mode to the ventilator door actuator 18, the defroster door actuator 20, and the foot door actuator 22 (step 114). As a result, in addition to the reduction of the air volume due to the change of the air outlet from the vent mode to the bi-level mode, the cool air that is the conditioned air blown out from the ventilator air outlet 14 spreads over a wide area including the target occupant in the vehicle interior.
Since it is blown out as a soft wind for 60 seconds, the wind speed feeling of the air-conditioning wind blown toward the upper body of the target occupant is weakened more than when changing from the normal vent mode to the bi-level mode, and the upper body becomes cold. The air-conditioning air blows out as expected by the target occupant who feels the passage.

On the contrary, when the outlet mode is changed from the foot mode to the bi-level mode, or from the foot mode to the vent mode, or from the vent mode to the bi-level mode (NO in step 121).
Is due to some cause of the target occupant during cooling,
This means that the blowout port mode is changed from the foot mode to the bilevel mode, the foot mode to the vent mode, or the vent mode to the bilevel mode by the manual selection.
Determines the concentrated blowing mode (step 123), and updates the manually selected vent mode or the bi-level mode, which is the vent mode, to the memory of the blowing state changing means 34 as the pre-change blowing mode (step 113). The control device 31 outputs a control signal for the centralized blowing mode to the wind direction motor 50 of the wind direction setting device 40, and outputs a control signal for the vent mode or the bilevel mode to the ventilator door actuator 18, the defroster door actuator 20, and the foot door actuator 22. And (step 114). This allows
The cool air that is the air-conditioning air that is blown out from the ventilator outlet 14 is intensively blown toward the upper half of the body of the target occupant for 60 seconds, and the occupant strongly feels the air velocity of the conditioned air, so that the occupant changes the outlet mode. You will feel the changes made by manual selection.

On the other hand, if the outlet mode after the change by manual selection is the bi-level mode or the vent mode (NO in step 119), the calculated target outlet air temperature T _OF is the reference temperature for warm / cool determination. In the case of heating at T ₀ = 25 ° or more (step 120 is NO), the blowing state changing means 34 determines the diffusion blowing mode or the concentrated blowing mode based on the detected blowing air temperature T _D (step 124). Specifically, as shown in step 124, the detected blowout air temperature T _D is equal to or higher than the concentrated diffusion determination reference temperature T _B +1 which is the determination reference value between the concentrated blowing mode and the diffusion blowing mode during manual selection during the rising process. If it is, the diffused blowout mode is determined, and if the detected blowout air temperature T _D reaches the concentrated diffusion determination reference temperature T _B at the time of manual selection, the concentrated blowout mode is determined.
In addition, the outlet mode that is the vent mode or the bi-level mode manually selected by the outlet state changing unit 34 is updated in the memory of the outlet state changing unit 34 as the outlet mode before the change (step 113), and the control device 31. Outputs a control signal for the concentrated blowing mode to the wind direction motor 50 of the wind direction setting device 40, and outputs a control signal for the vent mode or the bilevel mode to the ventilator door actuator 18, the defroster door actuator 20, and the foot door actuator 22. (Step 114).

Here, the centralized diffusion determination reference temperature T _B at the time of manual selection is, for example, (a) from the bi-level mode, depending on the change pattern of the blowout port mode as a way of changing the blowout port mode by manual selection. When the mode is changed to the vent mode, the centralized diffusion determination reference temperature T _B = 40
℃, (b) when the foot mode is changed to the vent mode, the central diffusion determination reference temperature T _B = 35 ° C., (c) When the vent mode is changed to the bi-level mode,
Concentrated diffusion determination reference temperature T _B = 25 ° C., (d) When the foot mode is changed to the bi-level mode, concentrated diffusion determination reference temperature T _B = 38 ° C. ..

This concentrated diffusion determination reference temperature T _B is set to a different value according to the change pattern of the blowout port mode so that the warm air as the conditioned air blown out from the ventilator blowout port 14 can be easily felt and the occupant can blow out the blowout mode. In order to give a feeling of change, it is better to concentrate hot air on the occupant, but considering the comfort of the occupant, the change pattern of the outlet mode and the thermal environment of the passenger compartment at that time are considered. This is because the diffusion blowing mode may be better in some cases depending on the state.

That is, looking at the change pattern from the bi-level mode to the vent mode in (a) above, the outlet mode is automatically selected in the bi-level mode when the heating is stable or when the heat load is too high. During the transitional period, the detected blown air temperature T _D is relatively low at 23 to 27 ° C., and the air volume is not so high. Therefore, in the change pattern of (a), the target occupant has a "moody mood".
Since it is thought that the vent mode of the air outlet mode was manually selected due to feeling, the target occupant expects warm air to come near the head even during heating. Also, (a)
In the change pattern from the bi-level mode to the vent mode, the wind speed increase feeling from the ventilator outlet 14 is the change pattern from the foot mode in (b) to the vent mode or the change pattern from the foot mode in to the bi-level mode in (d). Since there is less air than the pattern and the conditioned air that has already been blown out from the ventilator outlet 14 is meant to be stronger, the intensive blowing mode can give a stronger sense of change to the blowing mode. Therefore, in the change pattern from the bi-level mode to the vent mode of this (a), the concentrated diffusion determination reference temperature T _B is set to 40 ° C. and the temperature range of the concentrated blowing mode is widened.

Looking at the change pattern from the foot mode to the vent mode in (b) and the change pattern from the foot mode to the bi-level mode in (d), there is a sense of an increase in wind speed from the ventilator outlet 14. In the large and concentrated blowing mode, even if the conditioned air blown out from the ventilator outlet 14 is quite hot, the occupant feels cold due to the movement of the conditioned air. In particular, the outlet mode is selected as the foot mode in the automatic selection when the blower fan motor applied voltage V _FAN is high during warm-up in the initial stage of heating, and the blowing air speed is considerably high, so that the occupant is conditioned It is easy to feel the movement of. In general, humans dislike strong stimuli such as warm air. Furthermore, since there is a large amount of air during warm-up, it is considered possible to give a sufficient feeling of changing the outlet even in the diffusion outlet mode. For this reason, it is better to use the diffusion blowing mode to soften the air flow feeling up to a place where the detected blowing air temperature T _D is relatively low. Therefore, when the blower fan motor applied voltage V _FAN is the maximum value, the limit value of the blowing air temperature at which the occupant feels cold is about 40 ° C., referring to the foot mode in (b) above. In the change pattern to the vent mode, the central diffusion determination reference temperature T _{B is set} to 35.
The temperature range was set to 0 ° C. to widen the temperature range in which the diffusion blowing mode was set. Further, in the pattern (d) of changing from the foot mode to the bi-level mode, if the blower fan motor applied voltage V _FAN is the same, the bi-level mode has a weaker feeling of wind speed in the concentrated blowing mode than in the foot mode. Therefore, the concentrated diffusion determination reference temperature T _B is set to 38 ° C., and the temperature range of the concentrated blowing mode is set to be wider than the change pattern from the foot mode to the bilevel mode in (b). Therefore, for example, when the occupant changes the outlet mode from the foot mode to the vent mode during warm-up due to a lack of heating feeling in the upper body, the outlet mode becomes diffusion outlet for 60 seconds, and the ventilator outlet 14 supplies air conditioning air. Will be softly supplied to the upper half of the body of the target occupant, and warm-up with less air movement will be possible. In addition, when the detected blowing air temperature T _D is 30 ° C. or higher and the heating is stable, when the blowing mode is automatically selected and the foot mode is set to the foot mode, warm air is stagnant near the head and the occupant feels a “mistiness”. When the blowout mode is changed to the vent mode in an attempt to solve the problem, the blowout mode becomes the concentrated blowout mode for 60 seconds, and the conditioned air is blown out intensively from the ventilator blowout port 14 toward the upper body of the target occupant. , "Mood feeling" can be eliminated.

Looking at the change pattern from the vent mode to the bi-level mode in (c), it has the meaning of weakening the wind speed from the ventilator outlet 14. However, during heating, the vent mode is rarely automatically selected. In this respect, the change pattern from the bi-level mode to the vent mode in (a), the change pattern from the foot mode to the vent mode in (b), and (d)
It is different from the change pattern from the foot mode to the bi-level mode, and for some reason, while the occupant manually selected the vent mode to the vent mode, the occupant changed the vent mode from the vent mode to the bi-level mode. It is considered to be limited to the case of manual selection. Therefore, it is considered that the occupant expects to weaken the sense of wind speed after the change. Therefore, the concentrated diffusion determination reference temperature T _B is set to a low temperature of 25 ° C. In most cases, the sense of wind velocity is weakened in the diffusion blowing mode. It is designed to be

In short, according to this embodiment, when the mode in which the combination of the plurality of outlets includes the ventilator outlet 14 is selected by manual selection by the occupant, it is changed depending on the air conditioning condition in the vehicle compartment. During the fixed wind direction time t _c , the blowout state of the conditioned air from the ventilator blowout port 14 is automatically fixed to the concentrated blowout mode or the diffusion blowout mode so that a feeling of changing the combination state of the blowout ports by manual selection can be obtained. , Can be automatically given to the crew.

The wind direction fixing time t _c is not limited to 60 seconds, and may be any seconds as long as the passenger can fully feel the feeling of changing the combination state of the air outlets.

[0045]

As described above, according to the present invention, when the combination state of a plurality of outlets is changed from automatic selection based on thermal environment information to manual selection by an occupant, the outlets are synchronized with the manual selection. The air-conditioning air blown from the air conditioner is automatically changed so that the air-conditioning air is concentrated and blown out to the target occupants and is diffused to a large area including the target occupants in the passenger compartment. The occupant can be effectively provided with a feeling of changing the combination state of the plurality of outlets by manual selection, and the comfort can be improved. Moreover, according to the present invention, when the combination state of the outlets is manually changed, the state of the conditioned air immediately after the change is automatically changed, so that a thermal sensation such as too cold or too hot is declared. Since there is no need to provide any means, the structure is simple.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an entire embodiment of the present invention.

FIG. 2 is a front view showing a wind direction setting device according to an embodiment.

FIG. 3 is a flowchart of one embodiment.

FIG. 4 is a flowchart of one embodiment.

FIG. 5 is a flowchart of one embodiment.

FIG. 6 is a flowchart showing a conventional example.

[Explanation of Codes] 1 ... Air conditioner body 14 ... Ventilator outlet 15 ... Defroster outlet 16 ... Foot outlet 25 ... Thermal environment information input means 33 ... Blow state setting means (wind direction setting means) 34 ... Blow state changing means 40 … Wind direction setting device (wind direction setting means)

Claims (3)

[Claims] 1. An air conditioner for a vehicle, wherein air-conditioning air whose temperature is adjusted according to thermal environment information is blown into a vehicle interior from a plurality of outlets to air-condition the vehicle interior. Air outlet selection means for selecting the combination state of the air outlets from which the air conditioning air is blown out from the plurality of air outlets by the automatic selection based on the environmental information, and the concentrated air outlets for intensively ejecting the air conditioning air from the air outlets to the target occupants. A wind direction setting means capable of changing the state and a diffused blowout state to blow out to a wide area including the target occupant in the passenger compartment, and in synchronization with a change from the automatic selection of the combination state of the blowout ports to the manual selection, A vehicle comprising: a blowout state changing means for outputting a blowout mode change signal to the wind direction setting means. Air-conditioning system. 2. During cooling, when the outlet is changed from bi-level to vent due to a change from automatic selection of the combination state of the outlets to manual selection,
The automobile air conditioner according to claim 1, wherein the blowout state changing means outputs a mode change signal that causes a diffused blowout to the wind direction setting means. 3. During heating, at the time of changing from the automatic selection of the blowout port selecting means to the manual selection, when the blowing air temperature of the conditioned air at this change is an appropriate temperature, the blowing state changing means diffuses. A synchronous change signal for blowing out is output to the wind direction setting means, and when the blowing air temperature of the conditioned air at the time of the change is low, the blowing state changing means outputs a synchronous change signal for concentrated blowing to the wind direction setting means. The vehicle air conditioner according to claim 1, wherein the air conditioner is a vehicle.