JPH0413560Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a blowing direction control structure for a vehicle air conditioner having a function of controlling the blowing direction of conditioned air.

BACKGROUND ART Conventionally, as a vehicle air conditioner equipped with a function of controlling the blowing direction of conditioned air, a structure shown in FIG.
issue). That is, an instrument panel 3 is disposed in front of the seats 1 and 2, and air outlets 4 and 5 of an air conditioner are provided on both sides of the instrument panel 3, respectively. The airflow outlets 4 and 5 are provided with louver-type airflow deflection devices 8 and 9 having a plurality of deflection plates 6 . . . 7 . There is a first setting position where the airflow is blown towards the occupants seated on seats 1 and 2 as shown by the solid line, and a second setting where the airflow is blown away from the occupants as shown by the broken line. It is configured to be deflectable between a set position and a set position. The airflow deflectors 8, 9 are each provided with an actuating lever 10, 11, and the actuating lever 10, 11 is connected to a connecting rod 12a, 12b, respectively.
It is linked to the drive lever 14 of the drive device 13 by. The operation of the drive device 13 is controlled based on a control signal output by a control device 15, and the control device 15 controls the room temperature setting device 1 provided on the instrument panel 3.
The control signal is output in accordance with the difference between the set temperature inputted to the controller 6 and the vehicle interior temperature detected by the room temperature sensor 17. In such a configuration,
The control device 15 controls the room temperature setting value inputted to the room temperature setting device 16 by the setting operation by the occupant and the room temperature sensor 17.
The temperature difference between the two is compared with a predetermined value, and if the temperature difference is greater than or equal to the predetermined value, the drive device 13 drives the drive lever 14 to the position shown by the solid line. As a result, the airflow deflection devices 8 and 9 are respectively deflected to the first setting position, and the conditioned air supplied from the air outlets 4 and 5 is concentrated and blown toward the occupants seated on the seats 1 and 2. becomes. Therefore, when cooling down after parking in the hot sun, the occupants can quickly feel cooled by the cold air blown directly onto them. Further, if the temperature difference is smaller than a predetermined value, the drive device 13 moves the drive lever 1
4 to the position indicated by the dashed line, and as a result, the airflow deflectors 8, 9 are each turned to the second set position. Therefore, the conditioned air supplied from the air outlets 4 and 5 deviates from the occupants seated on the seats 1 and 2 and spreads over the entire interior of the room, making it possible to obtain a diffused air flow that is suitable for steady cooling. be.

Problems to be Solved by the Invention However, in such conventional devices, it is simply determined whether the temperature difference between the set temperature and the vehicle interior temperature is greater than or equal to a predetermined value or smaller than a predetermined value. Depending on the determination result, the diffused blowout is switched to concentrated blowout. Therefore, as the interior of the vehicle is cooled, the temperature inside the vehicle asymptotically approaches the set temperature, and when the temperature difference becomes smaller than the predetermined value, the passenger's physical sensation may be affected by other environmental conditions in which the passenger is placed, such as the amount of solar radiation. The concentrated blowing is switched to the diffused blowing without any consideration as to what kind of influence it will have on the air flow. Therefore, even when the occupants are exposed to solar radiation due to changes in environmental conditions while driving and it is desired to obtain concentrated airflow to lower the sensible temperature, the condition that the temperature difference is smaller than a predetermined value is satisfied. Diffusion blowing is maintained for as long as possible, and it is not possible to closely control the blowing direction in response to ever-changing environmental conditions.

The present invention was developed in view of these conventional problems, and it is possible to improve the environmental conditions by controlling the blowing direction according to the amount of solar radiation, which changes frequently as an environmental condition of a vehicle air conditioner. The present invention provides a blowout direction control structure for a vehicle air conditioner that can control the blowout direction closely to the blowout direction.

Means for Solving the Problems In order to solve the above problems, in the present invention, an airflow deflection device linked to a drive means is provided at the air outlet of the main body of the air conditioner mounted on the vehicle. The airflow deflection device is configured to deflect the conditioned air supplied from the air outlet from a direction substantially parallel to a side wall of the vehicle interior to a direction toward a corresponding front seat occupant.

On the other hand, when the amount of solar radiation detected by the solar radiation sensor is less than a predetermined value, the arithmetic and control device calculates a deflection angle of the airflow deflection device that is approximately proportional to the amount of solar radiation, and when the amount of solar radiation is greater than or equal to a predetermined value, The deflection angle directed toward the corresponding front seat occupant is calculated, and the driving means is controlled based on the calculation result.

Effect In the above configuration, the conditioned air can be deflected from a direction substantially parallel to the side wall of the vehicle cabin to a direction directed toward the corresponding front seat occupant, and when the amount of solar radiation is less than a predetermined value, the deflection angle changes depending on the amount of solar radiation. Since the calculation is approximately proportional, it is possible to supply conditioned air in a stepless manner proportional to the amount of solar radiation not only to the front seat occupants but also to the rear seat occupants, thereby maintaining a favorable air-conditioned environment.

Furthermore, when the amount of solar radiation is greater than a predetermined value, the deflection angle is directed toward the front seat occupant, so that the conditioned air is fed in a direction suitable for reducing the sensible temperature that has increased due to solar radiation.

Embodiment A first embodiment of the present invention will be described below with reference to the drawings. That is, as shown in FIG. 2, the air conditioner main body 20 is constructed by connecting a blower unit 21, a cooling unit 22, and a heater unit 23, and is mounted on an automobile (not shown). The blower unit 21 includes an inside/outside air switching door 26 that opens and closes the outside air inlet 24 and the inside air inlet 25;
and a fan 28 whose driving source is the blower motor 27.
The blower motor 27 is provided with a motor control circuit 29. Inside the cooling unit 22, an evaporator 30 is provided.
Further, a heater core 31 is provided in the heater unit 23.
An air mix door 32 is pivotally installed in front of the heater core 31. Furthermore, the heater unit 23 includes a defroster duct 3.
3. Ventilator duct 34, foot duct 35
are arranged in series, and a defroster door 36, a ventilator door 37, and a foot door 38 are provided at the base end of each duct 33, 34, 35. The ventilator duct 34 communicates with the ventilator outlet 39 as shown in FIG. 3, and the ventilator outlet 39...
The airflow deflection device 41 is formed on the instrument panel 3 disposed in front of the occupants P ₁ and P ₂ seated inside the instrument panel 3, and has an airflow deflection device 41 therein as shown in FIGS. 4 and 5.
is fitted. The airflow deflection device 41 is connected to the frame body 4
The ventilator outlet 39 has a plurality of vertical deflection plates 43 and horizontal deflection plates 44 disposed within the frame 42, and is connected to the ventilator outlet 39 by pins 45 and 46 protruding from the frame body 42.
It is rotatably supported by assembly holes 47 and 48 formed in the upper and lower walls of. This airflow deflection device 41 is connected to the ventilator outlet 39 as shown in FIG.
_{The harmonized} air supplied _from
It has an angular range θ in which it can be deflected up to the direction (angle θ ₁ ) in which it points. Also, at the end of the lower pin 46,
A first gear 49 is fixed, and the first gear 49
A second gear 51 provided on the rotating shaft of a stepping motor 50 serving as a driving means is meshed with the second gear 51 .

Further, a solar radiation sensor 52 which is a means for detecting the amount of solar radiation is provided in the center of the instrument panel 3, and the output signal of the solar radiation amount sensor 52 is transmitted to the external temperature sensor as shown in FIG. 53,
The output signals from the room temperature sensor 54 and the temperature setting device 55 are inputted to an arithmetic and control unit 56. The arithmetic and control unit 56 includes detection signals from the sensors 52, 53, and 54 and a temperature setting device 55.
A target room temperature calculation circuit 57 that calculates the target room temperature T _S0 based on the set temperature input to the target room temperature
A blowout air volume calculating circuit 58 is provided which calculates a blowout air volume according to T _S0 and outputs a control signal to the motor control circuit 29 . Furthermore, the output stage of the blowout air volume calculation circuit 58 has the following information based on the target room temperature T _S0 :
A blowout mode selection circuit 60 is provided which selects one of the VENT mode, B/L mode, and HEAT mode and outputs a control signal to the blowout mode actuator 59 that drives the defroster door 36, ventilator door 37, and floor door 38. It is being
The output stage of the blowout mode selection circuit 60 includes:
When the VENT mode is selected, the deflection angle θ of the airflow deflection device 41 is calculated according to the amount of solar radiation Z _C according to the functional characteristics shown in FIG. An output airflow deflection device angle calculation circuit 61 is provided.

Next, the operation of this embodiment according to the above configuration will be explained according to the flowchart shown in FIG. In other words, when the air conditioner switch (not shown) is turned on, the air conditioner body 20 and the arithmetic control unit 56
is activated, and the solar radiation amount Z _C , outside air temperature T _a , vehicle interior temperature T _r , and set temperature T _S are read from each of the sensors 52, 53, 54 and the temperature setter 55 (step). Then, when a predetermined calculation is performed based on these data and the target room temperature T _S0 is determined (step), based on this, VENT, B/L,
One of the modes HEAT and HEAT is determined (step). Here, the VENT, B/L, and HEAT modes mean the states shown below.

VENT mode: Only the ventilator duct 34 is opened.

B/L mode: Ventilator duct 34 and foot duct 35 are opened.

HEAT mode: Open the foot duct 35 and defroster duct 33.

Therefore, in the step, there is a mode in which the airflow deflection device 41 is provided and the ventilator duct 34 communicating with the ventilator outlet 39 is opened, i.e.
It is checked whether VENT or B/L is selected, and if the HEAT mode is selected, the control of the airflow deflection device 41 is meaningless, so the process does not proceed to the subsequent steps.
The loop is repeated. Therefore, when the VENT mode in which only the ventilator duct 34 is opened is selected, such as during high temperatures in summer, for example, as shown in Fig. 2, the determination of the step becomes YES, and the amount of solar radiation _ZC is equal to or greater than the predetermined value ZC ₁ . It is determined whether or not (step). If this determination is NO, θ ₀ is determined according to the function θ=(Z _C ) shown in Figure 6.
The deflection angle θ is calculated according to the amount of solar radiation Z _C between θ and θ ₁ . Then, the stepping motor 50 is activated by a control signal based on the deflection angle θ, and drives the airflow deflection device 41 to the angle θ (step). Therefore, the airflow deflection device 41 deflects the conditioned air from the direction (θ ₀ ) toward the occupants P ₁ and P ₂ according to the amount of solar radiation Z _C .
It is controlled steplessly up to the direction (θ ₁ ) pointing toward the occupants P ₁ and P ₂ . Also, step discrimination is
If YES, that is, if the solar radiation amount Z _C is greater than or equal to the predetermined value Z _C1 , the deflection angle θ is set to θ ₁ , which is the angle pointing toward the occupants P ₁ and P ₂ (step). Therefore, under environmental conditions with strong solar radiation, occupants P ₁ and P ₂
It is possible to effectively lower the perceived _temperature by the concentrated air blown _toward In other words, the sensible temperature can be lowered just enough depending on the environmental conditions.

FIG. 8 shows a second embodiment of the present invention, in which a driver side solar radiation sensor 62 for detecting the solar radiation amount Z _R on the right side of the vehicle interior 40 and a solar radiation sensor on the left side of the vehicle interior 40 are installed on both sides of the instrument panel 3. An assist side solar radiation sensor 63 is provided to detect the amount _ZL . In addition, driver-side airflow deflection devices 64, 6 that operate synchronously are installed at the ventilator outlets 39, 39 in front of the passenger _P1 .
4, and assist side airflow deflection devices 64', 64' which operate synchronously are provided at the ventilator outlets 39, 39 in front of the passenger _P2 side. On the other hand, as shown in FIG.
6' includes a driver side airflow deflection device angle calculation circuit 65 and an assist side airflow deflection device angle calculation circuit 6.
6 is provided, and both calculation circuits 65 and 66 are provided.
Detection signals from the solar radiation sensors 62 and 63 on the corresponding sides are input to the.

In this embodiment with the above configuration, occupant P ₁
When the amount of solar radiation Z _R on the right side of the vehicle compartment is detected by the driver side solar radiation sensor 62, the solar radiation on the right side is detected as shown in FIG. Z _R is a predetermined value Z _C1
It is determined whether or not the above is the case (step), and depending on the determination result, the processing of the step corresponding to the step of the above embodiment or similar processing (step) is executed. On the other hand, the amount of solar radiation Z _L on the left side of the cabin that affects occupant P ₂ is determined by the assist side solar radiation sensor 63.
As shown in FIG. 10B, following a step similar to that of the previous embodiment, it is determined whether the left solar radiation Z _L is greater than or equal to a predetermined value Z _C1 . (step), the processing of the step corresponding to the step of the above embodiment, or similar processing (step) is executed according to the determination result. Therefore, the driver side airflow deflection device 6
4 and 64 are controlled based on the amount of solar radiation Z _R on the right side of the vehicle compartment 40, and assist side airflow deflection devices 64',
64' is controlled by the amount of solar radiation Z _L on the left side of the vehicle interior 40, and even under environmental conditions where the amount of solar radiation is different on the left and right sides of the vehicle interior, the blowing direction is controlled according to the sensible temperature of the occupants P ₁ and P ₂ . It is possible.

11 and 12 show a third embodiment of the present invention, in which the vertical deflection plates 43 are interconnected by links 67, and a rack 68 is formed at the end of the link 67. A pinion 69 fixed to the rotating shaft of the stepping motor 50 (FIG. 4) is meshed with the rack 68. According to this embodiment, only the vertical deflection plate 43, which is a member related to the deflection angle θ ₁ , is driven.
The stepping motor 50 can be driven at low output, and the stepping motor 50 can be made smaller.

Effects of the invention As explained above, in this invention, the conditioned air can be deflected from a direction that is approximately parallel to the side wall of the passenger compartment to a direction that is directed toward the corresponding front seat occupant, so that the solar radiation sensor in the passenger compartment can detect the conditioned air. When the amount of solar radiation obtained is less than a predetermined value, the deflection angle of the airflow deflection device is calculated approximately proportional to the amount of solar radiation, so that not only the front seat passengers but also the rear seat passengers receive a stepless deflection angle proportional to the solar radiation amount. It is possible to supply finely tuned conditioned air and maintain a favorable air-conditioned environment.

Furthermore, when the amount of solar radiation is greater than a predetermined value, the deflection angle is directed toward the front seat occupant, which is suitable for lowering the sensible temperature that has increased due to solar radiation.

Furthermore, in the second embodiment, the blowing direction is controlled individually according to the amount of solar radiation on each side of the passenger, so even if the left and right sides of the vehicle have different environmental conditions, It is possible to individually control the blowing direction closely depending on the environmental conditions.

Furthermore, since the present invention does not use oscillating air blowing, it has a number of advantages such as being able to simplify the structure and be manufactured at low cost.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a first embodiment of the present invention, FIG. 2 is a conceptual diagram of an air conditioner main body according to the same embodiment, and FIG. 3 is an explanatory diagram showing the interior of a vehicle of the same embodiment. FIG. 4 is a front view of the airflow deflection device, FIG. 5 is a sectional explanatory view corresponding to the line in FIG. 4, and FIG.
The figure shows the calculation characteristics of the airflow deflector angle calculation circuit.
FIG. 7 is a flowchart showing the operation of the first embodiment, FIG. 8 is an explanatory diagram showing the structure of the vehicle interior of the second embodiment of the present invention, and FIG. 9 is a block diagram of the same embodiment. 10A and 10B are flowcharts of main parts of the same embodiment, FIG. 11 is a perspective view of an airflow deflection device according to a third embodiment of the present invention, and FIG. 12 is a sectional view of the same device. FIG. 13 is an explanatory plan view of a conventional air conditioner for a vehicle. 20... Air conditioner main body, 39... Ventilator outlet, 40... Vehicle interior, 41... Airflow deflection device,
50...Stepping motor (driving means), 52
... Solar radiation sensor, 56 ... Arithmetic control unit, P ₁ ,
P ₂ ...crew.

Claims (1)

[Scope of utility model registration request] An airflow deflector capable of deflecting conditioned air supplied from the air outlet of an air conditioner mounted on the vehicle from a direction substantially parallel to the side wall of the vehicle cabin to a direction toward the corresponding front seat occupant. A device is provided, a driving means for driving the airflow deflection device is provided, and a means for detecting the amount of solar radiation inside the vehicle is provided,
When the amount of solar radiation is less than a predetermined value, a deflection angle of the airflow deflection device that is approximately proportional to the amount of solar radiation is calculated, and when the amount of solar radiation is more than a predetermined value, a deflection angle directed toward the corresponding front seat occupant is calculated. A blowout direction control structure for a vehicle air conditioner, characterized in that an arithmetic and control device for controlling the driving means based on the calculation result is provided.