JPH0664442A - Air conditioner - Google Patents

Abstract

PURPOSE:To make users feel swinging even while a reduction in capacity for air conditioning is being prevented as well as to prevent an air conditioner which is of no use to make users feel swinging, from being swung together. CONSTITUTION:The device is equipped with a ventilation duct 2 feeding air into the inside of a cabin, a blower 3 generating air flow within the ventilation duct 2, a humidifier 4 humidifying air flowing the downstream side of a heater core 16 provided for the ventilation duct 2, and with a control means 5 which controls an air flow rate of the blower 3 when an automatic air conditioning mode is selected, and also automatically controls temperature within the cabin based on input signals. And when a signal for a switch 34 'on' for a fairly swinging mode is inputted to the control means 5, the amount of humidification to air fed to the inside of the cabin by the blower 3 is changed by turning the humidifier 4 on and off every specified time, so that as wing mode can thereby be executed, which makes the crew of an automobile feel swinging without changing the flow rate of the blower 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner adapted to perform a fluctuation mode which gives a feeling of fluctuation to a user.

[0002]

2. Description of the Related Art Conventionally, as one of measures for preventing driver's hypnosis, a fluctuation mode in which the applied voltage of a blower is alternately increased / decreased to change the air volume to give a feeling of fluctuation to the driver, BACKGROUND ART An air conditioner is known which is designed to increase the awakening level of a driver.

[0003]

However, in the conventional air conditioner, for example, at the time of maximum cooling operation, the driver can feel the fluctuation only in the direction of reducing the air volume of the blower, and the target outlet temperature (TAO). Further, there is a problem that the blowing temperature of the air blown from the blowout port is greatly increased and the cooling capacity is significantly lowered. Therefore,
The target outlet temperature may fluctuate during fluctuation mode, but if the target outlet temperature is fluctuated, unnecessary air conditioning equipment (inside / outside air switching damper,
There was a problem that the outlet switching damper, etc.) would also shake together. An object of the present invention is to provide an air conditioner that prevents a decrease in air-conditioning capacity while giving a feeling of fluctuation to a user, and prevents fluctuations of an air conditioner that is unnecessary to give a feeling of fluctuation to a user. And

[0004]

SUMMARY OF THE INVENTION The present invention is directed to a blower duct for sending air into a room, a blower for sending air into the room through the blower duct, and a humidifier for humidifying the air sent into the room by the blower. And a controller for instructing a fluctuation mode that gives the user a feeling of fluctuation, and a controller for repeatedly changing the amount of humidification of the humidifier when the fluctuation mode is instructed by the instructing means. Adopted technical means.

[0005]

According to the present invention, when the fluctuation mode is instructed by the instructing means, the humidification amount of the humidifier is repeatedly changed so that the air flowing through the air duct by the air blower is cooled by the moisture generated by the humidifier. Changes.
For this reason, a feeling of fluctuation is given to the user, so that even during the maximum cooling operation, the air conditioning capacity of the air conditioner is not reduced.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an air conditioner of the present invention will be described based on an embodiment shown in the drawings. [Structure of Embodiment] FIG. 1 is a diagram showing an air conditioner for an automobile using the present invention. The automotive air conditioner 1
An auto air conditioner, which is a blower duct 2 for sending air into the vehicle compartment, a blower 3 for generating an air flow toward the vehicle interior in the blower duct 2, a humidifier 4 for humidifying air flowing in the blower duct 2, And a control device 5 for automatically controlling the indoor temperature and the air volume by controlling each air conditioner.

Inside the blower duct 2, the air inside the vehicle (inside air) introduced from the inside air inlet 6 or the outside air (outside air) introduced from the outside air inlet 7 is used as a diff outlet 8, a face outlet 9 or a foot. An air flow path for sending to the air outlet 10 is formed. An inside / outside air switching damper 11 that switches between the inside air and the outside air is provided on the upstream side of the blower duct 2.
Further, on the downstream side of the blower duct 2, a differential damper 12, a face damper 13, and a foot damper 14 that open and close the differential outlet 8, the face outlet 9, and the foot outlet 10, respectively.
Is provided.

An evaporator 15 is provided in the blower duct 2. The evaporator 15 is a refrigerant evaporator of a refrigeration cycle for exchanging heat between the air flowing through the air duct 2 and the refrigerant. A heater core 16 is provided on the downstream side of the evaporator 15. The heater core 16 is a heat exchanger that exchanges heat between the air discharged from the evaporator 15 and the engine cooling water. An air mix damper 17 for adjusting the amount of air passing through the heater core 16 and the amount of air bypassing the heater core 16 is provided on the front surface of the heater core 16.

The blower 3 is the blower of the present invention, is housed on the upstream side of the blower duct 2, and is rotationally driven by the blower motor 18. The blower motor 18 continuously changes the rotation speed of the blower 3 according to the applied voltage applied from the blower controller 19. The humidifier 4 is assembled to the connecting duct 20 that is connected to the downstream side of the heater core 16 of the blower duct 2. For example, an ultrasonic type humidifier is used, and the fog generated by vibrating the vibrator according to the applied voltage is generated. Moisturized the air by attracting the atomized particles to the air flowing in the air duct 2. In addition, the humidifier 4 is a controller 5
When a higher level (Hi) voltage is applied, the amount of humidification increases, and when a low level (Lo) voltage is applied, the amount of humidification decreases.

The controller 5 includes a humidifier 4, a blower controller 19, an inside / outside air switching damper 11, and a diff damper 1.
2, actuators 21 to 2 for driving the face damper 13, the foot damper 14, and the air mix damper 17
5 and control. The control device 5 controls each actuator based on various input signals and an inputted program to air-condition the vehicle interior. And
The control device 5 includes a temperature setter 26 operated by the user, an automatic air conditioner switch 27, an inside air sensor 28 that detects the temperature inside the vehicle, an outside air sensor 30 that detects the outside air temperature, and a solar radiation sensor 31 that detects the amount of solar radiation. Prepare Further, the control device 5 includes a post-evaporation temperature sensor 32 that detects the temperature downstream of the evaporator 15, and a water temperature sensor 33 that detects the temperature of the engine cooling water flowing into the heater core 16.
As shown in FIG. 2, the control device 5 has a weak fluctuation switch 34, a middle fluctuation switch 35, and a strong fluctuation switch 36, which serve as instructing means for instructing the respective control devices of fluctuation modes that give a feeling of fluctuation to the occupants of the vehicle. Equipped with.

Further, the controller 5 controls the target outlet temperature TAO.
Is calculated by the following formula 1.

## EQU1 ## TAO = Kset.Tset-KR.TR-KAM.TAM-KS.TS + C where Kset is the temperature setting gain and Tset is the temperature setting device 2.
6 set temperature signal, KR is inside air temperature gain, TR is temperature signal of inside air sensor 28, KAM is outside air temperature gain, TAM
Is the temperature signal of the outside air sensor 30, KS is the solar gain, TS
Is a solar radiation signal of the solar radiation sensor 31, and C is a correction constant.

Next, the controller 5 controls each fluctuation switch 3
When 4 to 36 are off or the strong fluctuation switch 36 is on (fluctuation mode), the target opening degree SW of the air miss damper 17 is calculated by the following mathematical formula 2.

[Equation 2] SW = {(TAO-TE) / (TW-TE)} × 100 Further, when the weak fluctuation switch 34 is on (fluctuation mode), the control device 5 sets the target opening degree SW of the air miss damper 17 to It is calculated by the following mathematical formula 3.

SW = {(TAO + 1-TE) / (TW-TE)} × 100 Then, when the middle fluctuation switch 35 is on (fluctuation mode), the controller 5 sets the target opening degree SW of the air miss damper 17 to It is calculated by the following formula 4.

## EQU00004 ## SW = {(TAO + 2-TE) / (TW-TE)} * 100 where TE is the temperature signal of the post-evaporation temperature sensor 32 and TW is the temperature signal of the water temperature sensor 33. Then, the air mix damper 17 is controlled by the actuator 25 so that the actual opening degree becomes the target opening degree SW.

Next, the inside / outside air switching control when the automatic air conditioner switch 27 is turned on will be described. The inside / outside air switching damper 11, as shown in FIG.
Determined by AO. Then, the inside / outside air switching damper 11
Are driven so as to be in the inside air mode and the outside air mode determined by the actuator 21. Next, the outlet control when the automatic air conditioner switch 27 is turned on will be described. Face damper 13 and foot damper 14
Is determined by the target outlet temperature TAO, as shown in FIG. Then, the face damper 13 and the foot damper 14 are driven so as to be in the foot mode, the bi-level mode, and the face mode determined by the actuators 23 and 24.

Next, the air volume control when the automatic air conditioner switch 27 is turned on will be described. As shown in FIG. 5, after the value of the water temperature detected by the water temperature sensor 33 has sufficiently risen after the engine is started, the air volume of the blower 3 (the voltage applied to the blower motor 18) is set to the target outlet temperature TA.
Determined by O. The voltage determined here is
The reference voltage is V. The blower 3 is controlled by the control device 5 via the blower controller 19. That is, the control device 5 detects the voltage applied to the blower motor 18, and the blower motor 19 by the blower controller 19 is detected.
The voltage applied to 8 is controlled. Also, the strong fluctuation switch 3
When 6 is on (fluctuation mode), the control device 5 operates as shown in FIG.
A voltage (V-Δ) obtained by subtracting the fluctuation voltage ΔV as shown in the time chart of FIG.
The blower motor 18 is controlled so that V) and the reference voltage V are alternately repeated every predetermined time.

Next, the humidification amount control when the automatic air conditioner switch 27 is turned on will be described. The humidification amount of the humidifier 4 is, as shown in the time chart of FIG.
It is determined by the fluctuation waveform programmed in the controller 5 according to the selected state (fluctuation mode) of each fluctuation switch 34 to 36. The humidifier 4 is at a low level (Lo) when the weak fluctuation switch 34 is turned on.
Is applied to control a low amount of humidification. Further, when the middle fluctuation switch 35 and the strong fluctuation switch 36 are turned on, a high voltage of high level (Hi) is applied to the humidifier 4 to control the humidification amount to be high.

[Operation of Embodiment] Next, the operation of the vehicle air conditioner 1 will be briefly described with reference to FIGS. 1 to 7. FIG. 7 is an operation flowchart when the automatic air conditioner switch 27 of the control device 5 is turned on. First, the set temperature signal Tset of the temperature setter 26, the temperature signal TR of the inside air sensor 28, the temperature signal TAM of the outside air sensor 30, and the insolation signal TS of the insolation sensor 31 are read. Further, the temperature signal TE of the post-evaporation temperature sensor 32 and the temperature signal TW of the water temperature sensor 33 are read (step S1). Next, the target outlet temperature TAO is calculated according to the above-mentioned mathematical expression 1 (step S2).

Then, the inside / outside air mode is determined based on FIG. 3 programmed in the controller 5 (step S
3), the outlet mode is determined based on FIG. 4 programmed in the controller 5 (step S4). Next, it is determined whether the weak fluctuation switch 34 is turned on (step S5). When the result of the determination in step S5 is No, it is determined whether or not the middle fluctuation switch 35 is turned on (step S6). If the determination result of step S6 is No, it is determined whether or not the strong fluctuation switch 36 is turned on (step S7).

If the result of the determination in step S7 is No, the air mix damper 17 is calculated according to the above-mentioned formula 2.
Of the target opening SW is calculated (step S8), a control signal is output to the actuator 25 that drives the air mix damper 17 so that the target opening SW is obtained (step S9), and the humidifier 4 is turned off. (OFF) (step S
10). Then, based on FIG. 5 programmed in the control device 5, the air volume of the blower 3, that is, the blower motor 18
(Step S11), so that the determined applied voltage is applied to the blower motor 18,
A control signal is output to the blower controller 19 (step S12). And then return. Therefore, when the fluctuation switches 34 to 35 are off, normal air volume control and temperature control are performed.

When the result of the determination in step S5 is Yes, the target opening degree SW of the air mix damper 17 is calculated according to the above-mentioned formula 3 (step S13), and then the target opening degree SW is obtained. A control signal is output to the actuator 25 that drives the air mix damper 17 (step S14). Then, a low level (Lo) voltage is applied to the humidifier 4 every predetermined time (step S1).
5). After that, the control of step S11 is performed. Therefore, when the weak fluctuation switch 34 is turned on,
A low level (Lo) voltage is applied to the humidifier 4 every predetermined time. Therefore, the cold air cooled when passing through the evaporator 15 or the hot air heated when passing through the heater core 16 is generated by the atomized particles generated in the humidifier 4 when passing through the downstream side of the blower duct 2. It may or may not be chilled. Therefore, the blowout temperature of the air blown out from the blowout port fluctuates within the range of TAO ± 1 (° C.) as shown in FIG. 6 (C).

If the result of the determination in step S6 is Yes, the target opening degree SW of the air mix damper 17 is calculated according to the above-mentioned formula 4 (step S16), and then the target opening degree SW is obtained. A control signal is output to the actuator 25 that drives the air mix damper 17 (step S17). Then, a high level (Hi) voltage is applied to the humidifier 4 every predetermined time (step S1).
8). After that, the control of step S11 is performed. Therefore, when the middle fluctuation switch 35 is turned on,
Since the humidification amount fluctuates more than when the weak fluctuation switch 34 is turned on, the blowing temperature of the air blown from the blowing outlet is TAO ± 2 as shown in FIG. 6 (C).
It will fluctuate greatly in the range of (℃).

When the result of the determination in step S7 is Yes, the air mix damper 17 is calculated according to the equation (2).
Is calculated (step S19), and then a control signal is output to the actuator 25 that drives the air mix damper 17 so as to obtain the target opening SW (step S20). Then, a high level (H
The voltage of i) is applied every predetermined time (step S2).
1).

Further, the applied voltage (V-ΔV) obtained by subtracting the fluctuation voltage ΔV from the reference voltage V of FIG. 5 based on FIG. 6A.
Is determined (step S22), and then the applied voltage (V-Δ
V) and the reference voltage V are output to the blower controller 19 so as to be alternately applied to the blower motor 18 every predetermined time (step S23). In this example, the applied voltage (V-ΔV) is applied to the blower motor 18 when the humidifier 4 is turned off, and the reference voltage V is applied to the blower motor 18 when the high level (Hi) voltage is applied to the humidifier 4. Is applied. And then return.

Therefore, when the strong fluctuation switch 36 is turned on, in addition to the operation when the middle fluctuation switch 35 is turned on, when the humidifier 4 is turned off, the blower duct is blown by the blower 3. The degree of cooling of the air flowing inside 2 is weakened. Therefore, as shown in FIG. 6C, the blowout temperature of the air blown from the blowout port is TA
It will fluctuate around O.

[Effects of the Embodiment] As described above, the automobile air conditioner 1 of this embodiment is assumed to have the maximum cooling operation (M
Even at the time of ax / Cool), the temperature of the air blown into the vehicle compartment can be changed not only by reducing the air flow rate of the blower 3 but also by the humidification amount of the humidifier 4. For this reason,
Since it is possible to prevent the blowout temperature of the air blown into the vehicle cabin from rising above the target blowout temperature, it is possible to suppress a decrease in the cooling capacity in the fluctuation mode.

Further, when the weak fluctuation switch 34 and the middle fluctuation switch 35 are turned on, the fluctuation mode in which the amount of humidification is changed to give a feeling of fluctuation to an occupant of the automobile is performed. For this reason, the sound of the blower 3 and the blowing noise in the blowing duct 2 do not change, so that the passengers of the vehicle are not made uncomfortable. Then, when the strong fluctuation switch 36 is turned on, the fluctuation mode in which the humidification amount and the air flow of the blower 3 are changed to give a feeling of fluctuation to an occupant of the automobile is performed. Therefore, even if the change rate of the air volume of the blower 3 is small, it is possible to obtain a comfortable feeling due to fluctuations. Further, the fluctuation mode that gives the occupant of the vehicle a feeling of fluctuation is performed without fluctuation of the target outlet temperature TAO. Therefore, it is possible to prevent the problem that the air conditioners (for example, the inside / outside air switching damper 11, the face damper 13, the foot damper 14, etc.) which are unnecessary for giving the occupant of the automobile a feeling of fluctuation are shaken together.

[Modification] In the present embodiment, a weak fluctuation switch 34, a middle fluctuation switch 35, and a strong fluctuation switch 36.
Although the fluctuation amount of the blowout temperature is changed in three stages depending on the selected state, the fluctuation amount of the blowout temperature may be changed by providing only one fluctuation switch. Further, a fluctuation mode may be performed in which the user feels a fluctuation only by changing the amount of humidification by the humidifier 4. In this embodiment, operation switches such as a weak fluctuation switch 34, a middle fluctuation switch 35, and a strong fluctuation switch 36 for manually instructing the fluctuation mode are used as the instructing means. However, for example, the room temperature stabilizes near the set temperature. You may use the instruction | indication means which automatically instruct | indicates a fluctuation mode at the time of doing. In the present embodiment, the fluctuation mode in which the humidification amount is changed by turning the humidifier 4 on and off to give the occupant of the vehicle a feeling of fluctuation is performed. For example, the humidifier 4 has a low level voltage and a high level voltage. A fluctuation mode may be performed in which the humidification amount is changed by alternately applying and to give the user a feeling of fluctuation. Although the present invention is used in the air conditioner for automobiles in this embodiment, the present invention may be used in other air conditioners for vehicles and may be used in home air conditioners.

[0027]

EFFECTS OF THE INVENTION The present invention can give a feeling of fluctuation to the user only by repeatedly changing the humidification amount of the humidifier, so that the reduction of the air conditioning capacity of the air conditioner can be suppressed during the maximum cooling operation. it can. In addition, it is possible to give the user a feeling of fluctuation by changing the amount of humidification of the humidifier according to the fluctuation mode instruction by the instruction means, so that it is possible for an unnecessary air conditioner to fluctuate together to give the user a feeling of fluctuation. Can be prevented.

[Brief description of drawings]

FIG. 1 is a schematic view showing an air conditioner for an automobile using the present invention.

FIG. 2 is a plan view showing a fluctuation switch of the automobile air conditioner of FIG.

FIG. 3 is a graph showing a relationship between a target outlet temperature and an inside / outside air mode.

FIG. 4 is a graph showing a relationship between a target outlet temperature and an outlet mode.

FIG. 5 is a graph showing a relationship between a target outlet temperature and a reference voltage of a blower motor.

FIG. 6 is a time chart of an applied voltage of a blower motor, a humidification amount of a humidifier, and an outlet temperature.

FIG. 7 is an operation flowchart according to a program of the control device.

[Explanation of symbols]

 1 Automotive Air Conditioner 2 Blower Duct 3 Blower (Blower) 4 Humidifier 5 Controller 34 Weak Fluctuation Switch (Instruction Means) 35 Middle Fluctuation Switch (Indication Means) 36 Strong Fluctuation Switch (Indication Means)

Claims (2)

[Claims] 1. A blower duct for sending air into the room, (b) a blower for sending air into the room through the blower duct, and (c) humidifying air sent into the room by the blower. A control device having a humidifier and (d) an instruction means for instructing a fluctuation mode that gives the user a feeling of fluctuation, and when the fluctuation mode is instructed by this instructing means, the humidification amount of the humidifier is repeatedly changed. An air conditioner equipped with. 2. The air conditioner according to claim 1, wherein the control device alternately increases and decreases the air volume of the blower when the fluctuation mode is instructed by the instructing means.