JP3019586B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for fluctuating the temperature of air blown into a room, and more particularly to an air conditioner for a vehicle, which is characterized by fluctuation control performed when the air conditioner is in a maximum cooling state or a maximum heating state. Have

[0002]

2. Description of the Related Art Japanese Patent Application Laid-Open No. 1-212615 discloses a temperature fluctuation device in which a temperature fluctuation control device controls a temperature increasing / decreasing device to vary the temperature of air blown into a vehicle cabin.

[0003]

By the way, when the temperature of the air blown into the vehicle compartment is changed by the temperature changing device,
When the blow-out air temperature before the change (hereinafter referred to as the reference temperature) is in the intermediate temperature range, the blow-out air temperature can be changed in both directions of increasing and decreasing the reference temperature. However, when the reference temperature is in the maximum cooling state, it can be changed only in the direction of increasing the reference temperature.

[0004] Therefore, when the temperature fluctuation control device is configured to output a control signal to the temperature increasing / decreasing device such that the blown air temperature fluctuates in both the high and low directions with respect to the reference temperature, the reference temperature is in the intermediate temperature range. In this case, the temperature of the blown air fluctuates in both high and low directions. However, when the reference temperature is in the maximum cooling state, the temperature of the blown air fluctuates in only one direction. That is, for example, when the reference temperature is shifted to the maximum cooling state while the blown air temperature is changed in a state where the reference temperature is in the intermediate temperature range, the blown air temperature that has fluctuated in both the high and low directions until then is changed to the maximum cooling state. At the moment of the state, it changes only in one direction, so that the occupant feels uncomfortable.

[0005] It goes without saying that the above problem also occurs when the reference temperature is shifted to the maximum heating state while the outlet air temperature is being changed while the reference temperature is in the intermediate temperature range. Further, the same problem occurs when the reference temperature is shifted to the intermediate temperature range while the outlet air temperature is being changed while the reference temperature is in the maximum cooling state.

In view of the above problems, the present invention considers the case where the temperature of the air blown into the room is changed when the temperature adjustment state of the temperature adjustment means is in the intermediate temperature range, and the case where the temperature adjustment state is the maximum cooling state or the maximum cooling state. It is an object of the present invention to provide an air conditioner capable of performing a change in the blown air temperature so that the occupant feels substantially the same feeling of comfort when the blown air temperature is changed in the maximum heating state.

[0007]

To achieve the above object, according to the present invention, there is provided a ventilation path for guiding air into a room, and a blowing means for blowing air into the room through the ventilation path. A heat exchange means disposed in the ventilation path for cooling or heating air; a temperature adjustment means for adjusting the temperature of air blown into the room through the heat exchange means; and a temperature adjustment by the temperature adjustment means. The temperature fluctuation signal output means for outputting a temperature fluctuation signal for changing the temperature of the air blown into the room to the temperature adjustment means, and the temperature adjustment state of the temperature adjustment means is the maximum cooling state or the maximum heating state The gist of the present invention is an air conditioner including an air volume fluctuation signal output unit that outputs an air volume fluctuation signal for changing the amount of air blown from the air blowing unit to the air blowing unit.

According to the second aspect of the present invention, there is provided a ventilation path for guiding air into a room, a ventilation means for blowing air into the room through the ventilation path, and cooling or heating air provided in the ventilation path. Heat exchanging means, temperature adjusting means for adjusting the temperature of the air blown into the room through the heat exchanging means, and temperature for changing the temperature of the air blown into the room, the temperature of which is adjusted by the temperature adjusting means. Temperature fluctuation signal output means for outputting a fluctuation signal to the temperature adjustment means,
When the temperature adjustment state of the temperature adjustment unit is the maximum cooling state or the maximum heating state, the temperature adjustment unit is shifted from the maximum cooling state or the maximum heating state to the intermediate temperature region side at a first speed, and At the second speed higher than the first speed, a non-uniform fluctuation signal for shifting the temperature control unit from the intermediate temperature range to the maximum cooling state side or the maximum heating state side is output to the temperature control unit. The gist of the present invention is an air conditioner including a variable speed fluctuation signal output unit.

[0009]

According to the first aspect of the present invention, when the temperature adjustment state of the temperature adjustment means is not the maximum cooling state or the maximum heating state, the temperature fluctuation signal output means outputs a temperature fluctuation signal to the temperature adjustment means. As a result, the temperature of the air blown into the room fluctuates, and as a result, the driver in the room can obtain a sense of comfort.

In the second case where the temperature control state of the temperature control means is the maximum cooling state or the maximum heating state, the air flow fluctuation signal output means outputs the air flow fluctuation signal to the blowing means. As a result, the portion where the temperature of the air blown into the room does not fluctuate can be covered by the fluctuation of the air volume, so that the driver in the room can obtain almost the same feeling of comfort in the second case as in the first case. it can.

According to the second aspect of the present invention, when the temperature adjustment state of the temperature adjustment means is not the maximum cooling state or the maximum heating state, the temperature fluctuation signal output means outputs a temperature fluctuation signal to the temperature adjustment means. As a result, the temperature of the air blown into the room fluctuates, and as a result, the driver in the room can obtain a sense of comfort.

In the second case where the temperature adjustment state of the temperature adjustment means is the maximum cooling state or the maximum heating state, the unequal speed fluctuation signal output means outputs an unequal speed fluctuation signal to the temperature adjustment means. As a result, the temperature control means shifts at the first speed when shifting from the maximum cooling state or the maximum heating state to the intermediate temperature region side, and shifts to the first speed when shifting from the intermediate region to the maximum cooling state or the maximum heating state side. The transition is made at a second speed higher than the speed.

The above contents will be described in an easily understandable manner. When the temperature adjustment state of the temperature adjustment means is the maximum cooling state, it is a state in which the room is desired to be cooled most. That is,
When the room temperature becomes warm, the driver inside the room feels strange. Therefore, according to the second aspect of the present invention, when the temperature control means shifts from the maximum cooling state to the intermediate temperature region side, that is, when the temperature of the air blown into the room shifts to the high temperature side, the shift is performed at the first speed. Therefore, it is possible for the driver not to feel much increase in the room temperature. Then, when the temperature control means shifts from the intermediate temperature range to the maximum cooling state side, that is, when the blowout air temperature shifts to the side to be cooled, the temperature adjustment means shifts at the second speed higher than the first speed. The driver can feel cool.

When the temperature adjustment state of the temperature adjustment means is the maximum heating state, it is a state in which the room is desired to be heated most. That is, when the indoor temperature is cooled, the driver in the room feels strange. Therefore, in the invention of claim 2,
When the temperature control means shifts from the maximum heating state to the intermediate temperature region side, that is, when the room temperature shifts to a low temperature side, the shift is made at the first speed. You can not feel it. When the temperature control means shifts from the intermediate temperature range to the maximum heating state side, that is, when the room temperature shifts to the warming side, the shift is performed at the second speed higher than the first speed. Can feel the warmth.

As described above, the driver can obtain a comfortable feeling in the second case as well as in the first case.

[0016]

As described above, when the temperature of the air blown into the room is varied by the air conditioner of the present invention, when the temperature control state of the temperature control means is in the intermediate temperature range, the maximum cooling state or the maximum heating state is obtained. Since the occupant feels substantially the same feeling as when in the state, the occupant can experience the indoor air-conditioning state without feeling uncomfortable.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. First, a configuration of a first embodiment in which the air conditioner of the present invention is applied to an automobile will be described with reference to FIG.

As shown in FIG. 2, an inside air inlet 8 and an outside air inlet 9 are formed on the upstream side of a ventilation duct 20 as a ventilation path. The inside air inlet 8 and the outside air inlet 9 are opened and closed by an inside / outside air switching damper 6 driven by the inside / outside air servo motor 5.

A blower 19 is provided downstream of the inside / outside air switching damper 6 to introduce air from inside / outside air inlet 9 by rotating itself, and to blow this air into a vehicle interior through a ventilation duct 20. Are arranged. The blower 19 is driven by a blower motor 11 driven by an externally applied voltage. In the first embodiment, the blower motor 11 and the blower 19 constitute a blower.

The evaporator 12 is provided downstream of the blower 19. The evaporator 12 is a heat exchanger that cools and dehumidifies the air by absorbing heat from the surrounding air by a refrigerant flowing therein, and forms a refrigeration cycle together with a compressor, a condenser, and a pressure reducer (not shown). An evaporator blow-off air temperature sensor 23 for detecting an air temperature immediately after passing through the evaporator 12 is provided immediately downstream of the evaporator 12.

The heater core 1 is located downstream of the evaporator 12.
3 are provided. The heater core 13 is a heat exchanger that heats air using engine cooling water flowing through piping (not shown) as a heat source. The flow of the engine coolant into the heater core 13 is interrupted by opening and closing a water valve (not shown). The piping is provided with a water temperature sensor (not shown) for detecting the temperature of the engine cooling water. In the first embodiment, the evaporator 12 and the heater core 13 constitute a heat exchange unit.

An air mix damper 21 is disposed upstream of the heater core 13 for adjusting the rate at which air cooled and dehumidified by the evaporator 12 passes through the heater core 13 and the rate at which the air bypasses the heater core 13. Also,
The air mix damper 21 is an air mix servo motor 1
4 driven. Here the air mix damper 21
Is controlled as shown in FIG. 10 according to a value obtained by subtracting the actual opening SP from the target opening SW. In the first embodiment, the temperature control means is constituted by the air mix servomotor 14 and the air mix damper 21.

The air whose temperature is controlled by the air mix damper 21 is blown out from the face outlet 15 toward the upper body of the occupant in the passenger compartment, from the foot outlet 16 toward the foot of the occupant, or into a defroster (not shown). It is blown out from the outlet toward the windshield. The opening and closing of the face outlet, foot outlet, and defroster outlet are performed by an outlet switching damper 17 disposed downstream of the heater core 13 and the like. Further, the outlet switching damper 17 is driven by an outlet switching servomotor 18.

Reference numeral 1 denotes an internal air temperature sensor for detecting the air temperature in the passenger compartment, reference numeral 2 denotes an external air temperature sensor for detecting the external air temperature, and reference numeral 3 denotes a solar radiation sensor for detecting the amount of solar radiation entering the vehicle interior. The signals detected by these sensors are input to the ECU 7.

In addition to the signals from the sensors 1 to 3, a signal from a temperature setting device 10 for setting the temperature in the vehicle compartment is input to the ECU 7. Further, a signal from a fluctuation switch 22 for giving fluctuation to the temperature of the air blown into the vehicle compartment is input to the ECU 7. A predetermined calculation is performed based on these signals, and based on the calculation result, an inside / outside air servo motor 5, a blower controller 4 as a blowing means, an air mixing servo motor 14, an air outlet switching sensor. -A control signal is output to the motor 18 and a water valve (not shown).

Next, the driving of the blower 19 will be described with reference to FIG. The ECU 7 performs feedback control of the voltage applied to the blower 19 according to the above calculation processing.
The terminal 4 detects the blower voltage VM. Also ECU
Reference numeral 7 designates a control input from the terminal 3 to the blower controller 4 to control the output voltage BLW. Terminal 2 is blower motor 1
There is a terminal 1 for driving a bypass relay 4a for short-circuiting an output terminal of the blower controller 4 for driving the blower motor 4 with a battery voltage (+ B). The terminal 1 is a terminal for driving a main relay 4b for supplying power to the blower motor 11. It is. 4c is a power transistor, and 4d is a thermal fuse.

Next, the operation of the first embodiment will be described with reference to FIGS. FIGS. 4 and 5 are flowcharts showing a control process of the microcomputer in the ECU 7.

First, at step 110, the internal temperature sensor 1
, The outside air temperature (TAM) from the outside air temperature sensor 2, the amount of solar radiation (TS) from the solar radiation sensor 3, the evaporator air temperature (TE) from the evaporator air temperature sensor 23, and a water temperature not shown. The engine cooling water temperature (TW) from the sensor, the vehicle interior set temperature (TSET) from the temperature setting device 10, and the signal from the fluctuation switch 22 are read.

Next, at step 120, a target blow-out air temperature (TAO) into the vehicle compartment is calculated according to the following equation (1).

[0030]

TAO = KSET × TSET−KR × TR−KAM × TAM−KS × TS + C (where KSET, KR, KAM, and KS are coefficients,
(C is a constant.) Next, at step 130, the target opening (SW1) of the air mix damper 21 is calculated according to the following equation 2 so that the temperature of the air blown into the vehicle compartment becomes the TAO obtained at step 120.

[0031]

SW1 = (TAO-TE) × 100 / (TW-TE) (%) Next, at step 140, the blower voltage determined from the correlation shown in FIG. The blower voltage V1 is determined from the blower voltage determined by an air volume setting device (not shown) for setting.
Note that the correlation is represented by R in the microcomputer.
It is stored in the OM.

Next, in step 150, step 120
Is determined from the correlation shown in FIG. This correlation is stored in a ROM in the microcomputer.

Next, at step 160, it is determined whether or not the fluctuation switch 22 (FIG. 2) is turned on. If the fluctuation switch 22 is not turned on (NO), the final air mix damper opening SW to be output to the air mix servo motor 14 is set to step 1 in step 170.
In step 180 (FIG. 5), the final blower voltage V output to the blower controller 4 is determined in step 14 (FIG. 5).
The blower voltage V1 obtained at 0 is determined.

Next, at step 190, the opening degree of the air mix damper 21 is determined by the opening degree S determined at step 170.
A control signal is output to the air mix servo motor 14 so that the signal becomes W.

Next, in step 200, step 180
A control signal is output so as to apply the blower voltage V determined in (1) to the blower controller 4. Then step 21
If it is 0, a control signal is output to the outlet switching servomotor 18 so that the outlet mode becomes the outlet mode determined in step 150. Then return.

If it is determined in step 160 (FIG. 4) that the fluctuation switch 22 has been turned on (YES), the flow proceeds to step 220 in order to provide fluctuations in the temperature of the air blown into the vehicle cabin. By adding ΔTAO as a temperature fluctuation signal shown in the time chart (FIG. 8) stored in the ROM of the microcomputer to the TAO obtained in step 120, T
Find AOY. Here, it goes without saying that TAOY obtained in step 220 varies according to ΔTAO.

In step 230, the target opening degree (SW2) of the air mix damper 21 is calculated according to the following equation 3 so that the temperature of the air blown into the vehicle compartment becomes the TAOY obtained in step 220.

[0038]

## EQU00003 ## SW2 = (TAOY-TE) .times.100 / (TW-TE) (%) Here, SW2 obtained in step 230 is TAO.
Needless to say, it varies according to Y.

At step 240, the final air mix damper opening SW to be output to the air mix servo motor 14 is determined to be SW2. Next, in step 250, it is determined whether or not SW2 is smaller than 0% or larger than 100%. That is, it is determined whether the temperature adjustment state of the air mix damper 21 is the maximum cooling state or the maximum heating state.

If the determination in step 250 is NO, that is, if the air mix damper 21 is in the intermediate temperature range, in step 260, the final blower voltage V output to the blower controller 4 is set in step 140. Is determined to be the blower voltage V1 obtained in. That is, the determination of NO in step 250 means that the output of the air mix servo motor 14 is 100% responsive to the input temperature fluctuation signal ΔTAO. Therefore, the temperature of the blown air fluctuates in accordance with the fluctuation of the temperature fluctuation signal, and the occupant in the vehicle cabin can obtain a feeling of comfort. Blower voltage V to V1
It is decided.

On the other hand, if the determination in step 250 is YES, the temperature fluctuation signal ΔTAO is input as the output of the air mix servo motor 14.
There is a portion that cannot respond to the temperature, and a portion where the blown air temperature cannot fluctuate according to the temperature fluctuation signal. As a result, the occupant feels discomfort, and it is necessary to eliminate the discomfort by changing the air volume.

Therefore, if the determination in step 250 is YES, step 27 is performed to change the air volume.
In step 140, ΔV as the airflow fluctuation signal is calculated in step 140.
V2 is determined by adding to V1 determined in. Here, it goes without saying that V2 obtained in step 270 varies according to the airflow fluctuation signal ΔV.

Here, the time chart of the airflow fluctuation signal ΔV is stored in the ROM of the microcomputer. In the first embodiment, the magnitude of ΔV in this time chart is shown in the correlation shown in FIG. It is decided by using.

That is, for example, when it is determined in step 250 that SW2 obtained in step 230 is smaller than 0%, that is, when it is determined that the temperature adjustment state of the air mix damper 21 is the maximum cooling state. Is the TAO obtained in step 220 as shown in FIG.
The value A of the blower voltage corresponding to Y is set as a reference voltage, and the blower voltage is changed by ΔV around the reference voltage A. Here, the magnitude of ΔV is half the value obtained by subtracting the value of the lowest blower voltage from the reference voltage A.

Here, TAOY (= TAO + ΔTAO) varies with the variation of ΔTAO. That is, TAOY shown in FIG. 9 reciprocates in the left-right direction in the figure. Accordingly, the reference voltages A and ΔV reciprocate vertically in the drawing. This makes it possible to obtain an airflow fluctuation signal ΔV that varies the airflow.

Further, by determining the magnitude of ΔV in this manner, the magnitude of the noise caused by the start of the fluctuation of the air volume can be suppressed to such a level that the occupant does not care. Also, when it is determined that SW2 obtained in step 230 is larger than 100%, the value obtained by subtracting the value of the lowest blower voltage from the value of the blower voltage corresponding to TAOY is equal to ΔV, as in the above case. A similar effect can be obtained depending on the size.

After the blower voltage V2 has been determined by the method described above, the flow proceeds to step 280 where the blower controller 4
The final blower voltage V to be output to is determined as V2 obtained in step 270.

At step 250, the air mix damper 2
If the temperature control state of the air mix damper 21 is not the maximum cooling state or the maximum heating state, the final blower voltage V output to the blower controller 4 is determined to be V1. In the state or the maximum heating state, the final blower voltage V output to the blower controller 4 is determined to be V2.

Then, at step 190, the opening degree of the air mix damper 21 is determined at the opening degree S determined at step 240.
A control signal is output to the air mix servo motor 14 so that W (= SW2).

Next, in step 200, step 260
Alternatively, a control signal is output so that the blower voltage V determined in step 280 is applied to the blower controller 4. Next, in step 210, the blowing mode is set to step 1
A control signal is output to the air outlet switching servomotor 18 so as to be in the air outlet mode determined at 50. Then return.

Here, in order to specifically explain the above operation, when the temperature adjustment state of the air mix damper 21 is in the intermediate temperature range, the fluctuation switch 22 is turned on, and then the vehicle interior set temperature (TSET) is reduced to 25. The case where the temperature adjustment state of the air mix damper 21 becomes the maximum cooling state by lowering from 23 ° C. to 23 ° C. will be described as an example.

As shown in the time chart of FIG. 1, when the time T is T = T1, the occupant turns on the fluctuation switch 22, and at the same time, the TAOY and the air mix damper 2 are turned on.
1 begins to fluctuate. Also, at this time, the occupant gets a sense of comfort due to the fluctuation of the blown air temperature.

Then, when T = T2, the occupant lowers the vehicle interior set temperature from 25 ° C. to 23 ° C., so that the target opening of the air mix damper 21 becomes smaller than 0%, and the air mix damper does not fluctuate. . However, while the air mix damper 21 is no longer changing, the change in the air volume has begun, so that the occupant can obtain almost the same comfortable feeling as when T1 <T <T2.

The first embodiment has been described in detail above.
In the embodiment, since the temperature control state of the air mix damper 21 is the maximum cooling state or the maximum heating state, the portion where the air mix damper 21 does not fluctuate is covered by changing the air volume, so that the occupant is always comfortable. You can experience the perfect air conditioning.

In the first embodiment, the temperature fluctuation signal output means is constituted by steps 220, 230, 240 and 190. Step 270, step 28
0 and step 200.

Next, a description will be given of a second embodiment in which the air conditioner of the present invention is applied to an automobile. The configuration in the second embodiment is the same as the configuration in the first embodiment, and a description thereof will be omitted.

The operation of the second embodiment will be described with reference to FIGS. Steps 310 to 350 in FIG. 11 are the same as steps 110 to 150 in FIG. 4 in the first embodiment, and a description thereof will be omitted. In step 360, the fluctuation switch 22
Is not turned on (NO), the final air mix damper opening SW to be output to the air mix servo motor 14 is obtained in step 130 in step 370 (FIG. 12). SW1 is determined.

In the next step 380, a control signal is output to the air mix servo motor 14 so that the opening of the air mix damper 21 becomes the opening SW determined in step 370.

Next, in step 390, step 340
The blower voltage V1 determined by
The control signal is output so as to be applied to. Then step 4
At 00, a control signal is output to the outlet switching servomotor 18 so that the outlet mode becomes the outlet mode determined in step 350. Then return.

Incidentally, step 360 (FIG. 11)
If it is determined that the fluctuation switch 22 is turned on (YES) in step 410, in order to give fluctuation to the blown air temperature, in step 410, ΔT as the temperature fluctuation signal is used.
T which is the sum of AO and TAO obtained in step 320
AOY is calculated, and in step 420, the target opening (SW2) of the air mix damper 21 is calculated so that the temperature of the air blown into the vehicle compartment becomes the TAOY determined in step 410. Here, step 410 and step 420
Are the same as those in step 220 and step 230 of FIG. 4 in the first embodiment, and therefore detailed description is omitted.

In the second embodiment, the target opening degree SW2 of the air mix damper 21 shifts to the high temperature side in nine seconds as shown in FIG. 13 in accordance with ΔTAO as the above-mentioned temperature fluctuation signal. It changes to return to the original position.

Then, in step 430 (FIG. 5), it is determined whether the temperature adjustment state of the air mix damper 21 is the maximum cooling state or the maximum heating state. Step 43
If NO is determined to be 0, the final air mix damper opening SW to be output to the air mix servomotor 14 is obtained in step 420 in step S440.
W2 is determined.

When YES is determined in step 430, TAOY1 which is the sum of ΔTAO1 as the unequal velocity fluctuation signal and TAO obtained in step 320 is obtained, and the temperature of the air blown into the vehicle cabin is calculated. The target opening (SW3) of the air mix damper 21 is calculated according to the following equation 4 so as to be TAOY1.

[0064]

SW3 = (TAOY1-TE) × 100 / (TW-TE) (%) When it is determined in step 430 that the temperature adjustment state of the air mix damper 21 is the maximum cooling state, As shown in FIG. 14, the target opening degree SW3 of the air mix damper changes to the 10% intermediate temperature region side in 15 seconds in accordance with ΔTAO1 as the unequal velocity fluctuation signal, and the maximum cooling in three seconds. It changes to return to the state side. That is, when the air mix damper 21 shifts to the intermediate temperature region side, the air mix damper 21 shifts at a speed (first speed) at which the opening degree changes by about 0.67% per second, and returns to the position of the original maximum cooling state. At this time, the transition is made at a speed five times the first speed (second speed). If it is determined in step 430 that the temperature adjustment state of the air mix damper 21 is the maximum heating state, the target opening degree SW3 of the air mix damper is symmetric with the line SW3 = 0 in FIG. It changes according to.

As shown in FIG. 16, it is known that, when the stimulus temperature change rate is different, humans generally feel different warmth even if the absolute value of the skin temperature is the same. As described above, when the ambient temperature is changed, a different warm feeling can be felt by alternately changing the changing speed. FIG. 16 is data quoted from sensory physiology (author: Yoshiaki Iwamura, publishing office: Kinhodo).

In the next step 460, the final air mix damper opening SW to be output to the air mix servo motor 14 is determined to be SW3 obtained in step 450.

In step 380, the opening degree of the air mix damper 21 is set in step 440 or step 46.
A control signal is output to the air mix servo motor 14 so that the opening degree SW determined at 0 is obtained.

Next, in step 390, step 340
The blower voltage V1 determined by
The control signal is output so as to be applied to. Then step 4
At 00, a control signal is output to the outlet switching servomotor 18 so that the outlet mode becomes the outlet mode determined in step 350. Then return.

Here, in order to specifically explain the operation in the second embodiment, when the temperature adjustment state of the air mix damper 21 is the maximum cooling state, the fluctuation switch 2
An example in which 2 is turned on will be described.

As shown in the time chart of FIG. 15, when the time T is T = T3, the occupant turns on the fluctuation switch 22, and at the same time, the temperature of air blown into the air mix damper 21 and the passenger compartment starts to fluctuate. At this time, since the temperature adjustment state of the air mix damper 21 is already in the maximum cooling state, the air mix damper 21 is changed based on the unequal velocity fluctuation signal. The temperature of the blown air also fluctuates irregularly with the fluctuation of the air mix damper 21. The occupant feels comfortable due to the irregular temperature fluctuation.

In the second embodiment, the target opening degree SW2 of the air mix damper 21 is changed in the direction in which the blown air temperature increases as shown in FIG. 13, but in the direction in which the blown air temperature decreases, or You may make it fluctuate in both high and low directions.

As described above, in the second embodiment, when the temperature of the air mix damper 21 is the maximum cooling state or the maximum heating state, the air mix damper 21 is shifted to the intermediate temperature range when it is changed. At this time, the shift is made at the first speed, which is slower, and when shifting to the maximum cooling state side or the maximum heating state side, the shift is made at the second speed higher than the first speed. Can provide a feeling of comfort, and the occupant can always experience a comfortable air-conditioning state.

In the second embodiment, the target opening S of the air mix damper 21 is determined in step 430 of FIG.
When it is determined that W2 is smaller than 0% or larger than 100%, the air mix damper 21 is changed based on the time chart of FIG.
In the case where the blowout air temperature fluctuates in both the high and low directions, the above-described control is performed when it is determined in step 430 that SW2 is smaller than 2% or larger than 98%, for example. May be.

In the first and second embodiments, the temperature control means is constituted by the air mix damper 21 and the air mix servomotor 14. However, for example, the temperature control means may change the capacity of the compressor. A reheat type in which the amount of hot water flowing through the heater core is changed, or a type in which a cool air bypass damper is opened and closed may be used, and the effect of the present invention is effectively exerted in all of these cases.

In the above-described second embodiment, the temperature fluctuation signal output means is switched to step 410, step 420,
Step 440 and Step 380 are configured.
Further, the non-uniform fluctuation signal output means is constituted by step 450, step 460, and step 380.

[Brief description of the drawings]

FIG. 1 is a time chart for explaining the operation of a first embodiment of the air conditioner of the present invention.

FIG. 2 is an overall configuration diagram schematically showing the overall configuration of the first embodiment.

FIG. 3 is a drive circuit diagram of a blower used in the first embodiment.

FIG. 4 is a flowchart showing a control process of the microcomputer used in the first embodiment.

FIG. 5 is a flowchart showing a control process of a microcomputer used in the first embodiment.

FIG. 6 is a correlation diagram between TAO and a reference blower voltage in the first embodiment.

FIG. 7 is a diagram showing a correlation between TAO and a blowing mode in the first embodiment.

FIG. 8 is a time chart showing a temporal change of temperature fluctuation in the first embodiment.

FIG. 9 is an explanatory diagram showing a method of obtaining an airflow fluctuation signal in the first embodiment.

FIG. 10 is a correlation diagram showing drive control of the air mix damper in the first embodiment.

FIG. 11 is a flowchart showing a control process of a microcomputer used in a second embodiment of the air conditioner of the present invention.

FIG. 12 is a flowchart showing a control process of a microcomputer used in the second embodiment.

FIG. 13 is a time chart showing a temporal change of a change in a target opening degree SW2 of the air mix damper in the second embodiment.

FIG. 14 is a time chart showing a temporal change of a target opening degree SW3 of the air mix damper in the second embodiment.

FIG. 15 is a time chart for explaining the operation of the second embodiment.

FIG. 16 is a graph showing a temperature sensation region with respect to a stimulus temperature change speed.

[Explanation of symbols]

Reference Signs List 4 blower controller as blowing means 11 blower motor as blowing means 12 evaporator as heat exchanging means 13 heater core as heat exchanging means 14 air-mixing / sobo motor as temperature adjusting means 19 blower as blowing means 20 as ventilation path Ventilation duct 21 Air mix damper as temperature control means Step 190, Step 220 Temperature fluctuation signal output means Step 230, Step 240 Temperature fluctuation signal output means Step 200, Step 270 Air flow fluctuation signal output means Step 280 Air flow fluctuation signal output means Step 380, step 410 temperature fluctuation signal output means step 420, step 440 temperature fluctuation signal output means step 380, step 450 unequal speed fluctuation signal output means step 460 unequal Fast fluctuation signal output means

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yuji Ito 1-1-1, Showa-cho, Kariya-shi, Aichi Japan Inside Denso Co., Ltd. (72) Inventor Katsuhiko Samugawa 1-1-1, Showa-cho, Kariya-shi, Aichi Japan Nihon Denso Co., Ltd. (72) Inventor Takashi Tanaka 1-1-1, Showa-cho, Kariya-shi, Aichi Japan Inside Denso Co., Ltd. (72) Inventor Tsuyoshi Yoshinori 1-1-1, Showa-cho, Kariya-shi, Aichi Japan Nihon Denso Co., Ltd. (72) Inventor Sugi Hikari 1-1-1, Showa-cho, Kariya-shi, Aichi Japan Within Denso Co., Ltd. (58) Field surveyed (Int. Cl. ⁷ , DB name) B60H 1/00 101 F24F 11/02 102

Claims (2)

(57) [Claims] A ventilation path that guides air into a room, a ventilation unit that blows air into the room through the ventilation path, and a heat exchange unit that is disposed in the ventilation path and cools or heats the air. Temperature adjusting means for adjusting the temperature of air blown into the room through the heat exchange means; and a temperature fluctuation signal for changing the temperature of the air blown into the room, the temperature of which is adjusted by the temperature adjusting means. Temperature fluctuation signal output means for outputting to the means, and when the temperature control state of the temperature control means is the maximum cooling state or the maximum heating state, the air flow fluctuation signal for changing the amount of air blown from the blower means is output. An air conditioner comprising: an air volume fluctuation signal output unit that outputs to an air blowing unit. 2. A ventilation path that guides air into a room, a ventilation unit that blows air into the room through the ventilation path, and a heat exchange unit that is disposed in the ventilation path and cools or heats the air. Temperature adjusting means for adjusting the temperature of air blown into the room through the heat exchange means; and a temperature fluctuation signal for changing the temperature of the air blown into the room, the temperature of which is adjusted by the temperature adjusting means. Temperature fluctuation signal output means for outputting to the means, when the temperature adjustment state of the temperature adjustment means is a maximum cooling state or a maximum heating state, the temperature adjustment means is set to the maximum cooling state or the maximum heating state at a first speed. From the state to the intermediate temperature region side, and the temperature control means is moved from the intermediate temperature region to the maximum cooling state side or the maximum heating state at a second speed higher than the first speed. Air conditioning system, characterized in that it comprises a non-uniform speed fluctuation signal output means for outputting a nonuniform speed fluctuation signal to shift to the side to the temperature adjusting means.