JPH0522112U - Automotive air conditioner - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent energy consumption by preventing passengers from feeling uncomfortable due to excessively cold seats that are not exposed to sunlight and increased fan noise. [Structure] Sensors 8 and 9 that can detect the amount of solar radiation in the driver's seat and passenger's seat respectively are provided, and the amount of air in the grills 3 and 5 that blows cold air to each seat can be adjusted. By installing dampers 6 and 7, the increase in the amount of cold air blown out in the seats exposed to the sunlight does not differ from the conventional device, so the comfort of passengers is not impaired, and the air volume is suppressed in the seats not exposed to the sunlight. Therefore, excessive cooling is prevented, noise of the fan is reduced, and energy can be saved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 TECHNICAL FIELD The present invention relates to an air conditioner for an automobile whose air volume is controlled.

[0002]

[Prior Art]

 The structure of a conventional automobile air conditioner is shown in FIG. In FIG. 3 (a), 1 is an evaporator for cooling air, 2 is a fan, 3 is a driver side blowing grill, 4 is a central blowing grill, 5 is a passenger side blowing grill, and the evaporator 1 is supplied from the fan 2. The air cooled in 2 was blown from the grills 3, 4 and 5 to the driver's seat, the center and the passenger seat, respectively. FIG. 3B is a layout view of the solar radiation sensor, and the solar radiation sensor 12 is mounted near the center of the instrument panel portion in the vehicle compartment as shown in FIG. 3B.

In the above description, the fan 2 controls the rotation speed by increasing or decreasing the voltage, and when the solar radiation sensor 12 detects that the amount of solar radiation is a predetermined value or more, the voltage of the fan 2 is increased. As a result, the amount of air blown from the blowout grills 3, 4, 5 is increased. As a result, the blowing air velocity hitting the occupants was increased to improve the cooling feeling.

[0004]

[Problems to be solved by the device]

 In the conventional device, when the air volume was increased by increasing the voltage of the fan, the noise became loud and the passengers felt uncomfortable.

Further, even if the solar radiation hits only one of the driver's seat and the passenger's seat, the air volume of the blowing grilles of both seats is increased, so that the seat of the one not exposed to sunlight is over-cooled. At the same time, the power of the air conditioner is consumed excessively, which is contrary to energy saving.

The present invention is intended to solve the above problems.

[0007]

[Means for Solving the Problems]

 The vehicle air conditioner of the present invention is provided with a damper for adjusting the air volume of each of the air passages of the driver's seat blowing grille and the passenger seat blowing grille, a sensor for detecting the amount of solar radiation and the direction of solar radiation, and If the driver's seat or the passenger's seat is exposed to the sunlight due to the dampers and sensors of the above, the fan grille of the seat not exposed to the sunlight is narrowed down and the fan voltage is increased by a specified value. In addition, the fan air volume is increased to keep the air volume of the blowout grill of the seat not exposed to the sun constant, and then a control device is provided to control to increase the air volume of the blowout grill of the seat exposed to the sun. I am trying.

[0008]

[Action]

 In the above case, if one of the driver's seat and the passenger's seat has an amount of solar radiation above the specified value, and the other seat has an amount of solar radiation below the specified value, the air flow adjustment damper for the grill of the other seat. Squeeze to increase the air resistance and keep the air volume adjustment damper for the grill on one seat fully open. As a result, the air volume of the blowing grill of the other seat is reduced, and the air volume of the blowing grill of the one seat is increased.

Next, when the fan voltage is increased to a predetermined value, the overall air volume increases, the air volume of the air outlet grill of one seat further increases, and the decrease of the air volume of the air outlet grill of the other seat recovers. . In this case, the voltage increase of the fan for obtaining a predetermined increase in the air volume in the blowout grill of one of the seats can be smaller than in the conventional device.

According to the above, the increase in the amount of cold air blown out in the seats exposed to the sunlight is the same as that in the conventional device, the comfort of the occupant is not impaired, and the air flow is suppressed in the seats not exposed to the sunlight, so that the fan is not blown. Noise is reduced and energy can be saved.

[0011]

Embodiment An embodiment of the present invention is shown in FIGS. 1 (a) and 1 (b). In the present embodiment shown in FIGS. 1 (a) and 1 (b), the air supplied from a fan 2 and cooled by an evaporator 1 passes through an air passage from a driver seat blowing grill 3, a central blowing grill 4 and a passenger seat blowing grill 5. In an automobile air conditioner that blows out cool air to the driver's seat, the central portion, and the passenger's seat, respectively, the driver's seat air volume adjustment damper 6 and the passenger's seat provided on the driver's seat blowing grille air passage 10 and the passenger's seat blowing grille air passage 11 respectively. Seat air volume adjustment damper 7, driver's seat solar radiation sensor 8 and passenger's seat solar radiation sensor 9 provided near the driver's seat and passenger's seat, respectively, and the respective sensors 8, 9 and the respective dampers 6, 7 are connected by electric wires. The control device (not shown) is provided.

In the above description, the driver's seat solar radiation sensor 8 is mounted on the instrument panel in the vehicle compartment in a direction in which the amount of solar radiation hitting the driver's seat can be detected. Further, the passenger seat solar radiation sensor 9 is also mounted on the instrument panel in a direction in which the amount of solar radiation striking the passenger seat can be detected.

Next, the control by the control device in this embodiment will be described with reference to FIG. First, in step S1, the driver's seat solar radiation sensor 8 detects the amount of solar radiation in the driver's seat, and if it is detected that it is equal to or greater than a predetermined value, the process proceeds to step S2, in which the passenger's seat solar radiation sensor 9 detects solar radiation in the passenger's seat. It is determined whether the amount is equal to or more than a predetermined value. If the amount of solar radiation in the passenger seat is less than or equal to the predetermined value, the process proceeds to step S3, and the driver seat air volume adjustment damper 6 is fully opened.

Next, in step S4, the passenger seat air volume adjustment damper 7 is narrowed down. As a result, the air volume of the passenger seat blowing grill 5 is reduced and the air volume of the driver seat blowing grill 3 is increased.

Next, in step S5, the voltage of the fan 2 is increased to a predetermined value and the rotational frequency of the fan 2 is increased. As a result, the air volume of the passenger side outlet grill 5 which has been reduced by narrowing the damper 7 is recovered, and the air volume of the driver side outlet grill 3 is further increased.

The amount of increase in the voltage of the fan 2 required to increase the air volume of the driver's seat blowing grill 3 at this time by a predetermined value is smaller than that in the conventional device.

When the passenger seat is exposed to the sunlight and the driver's seat is not exposed to the sunlight, the process proceeds to steps S9, S10 and S11, the driver seat air volume adjustment damper 6 is narrowed down, and the passenger seat air volume adjustment damper 7 is fully opened. Then, by increasing the voltage of the fan 2 by a predetermined value, the air volume of the passenger seat blowing grille 5 is increased. The voltage increase amount in this case is small.

If both the driver's seat and the passenger's seat are exposed to sunlight, proceed to steps S6, S7, S8, keep both the driver's seat damper 6 and the passenger's seat damper 7 fully open, and increase the voltage of the fan 2. This increases the air volume of the blowout grills 3, 4, 5. The increase in fan voltage at this time is larger than that when only one of the driver's seat and the passenger's seat receives sunlight.

If neither the driver's seat nor the passenger's seat receives solar radiation, the process proceeds to steps S12, S13 and S14, and the air volume adjustment dampers 6 and 7 are both kept fully open and the fan voltage is not increased.

According to the above, the increase in the amount of cold air blown out in the seats exposed to the sunlight is the same as in the conventional device, the comfort of the occupant is not impaired, and the air flow is suppressed in the seats not exposed to the sunlight, so that the fan Noise is reduced and it is possible to save energy.

In this embodiment, the driver's seat solar radiation sensor 8 and the passenger's seat solar radiation sensor 9 are used, but the same effect can be obtained by using one sensor that simultaneously detects the solar radiation amount and the solar radiation direction. Can also

[0022]

[Effect of the device]

 The vehicle air conditioner of the present invention is provided with a sensor capable of detecting the amount of insolation of each of the driver's seat and the passenger's seat, and also has an air volume adjustment capable of adjusting the air volume of the grill that blows cold air to each seat. By installing a damper, the amount of cold air blown out in the seats exposed to the sunlight is the same as in the conventional device, so passenger comfort is not impaired, and the air volume is suppressed in the seats not exposed to the sunlight. Overcooling is prevented, the noise of the fan is reduced, and energy can be saved.

[Brief description of drawings]

1A and 1B are explanatory views of an embodiment of the present invention, in which FIG. 1A is an arrangement of an air volume adjusting damper, and FIG. 1B is an illustration of arrangement of a solar radiation sensor.

FIG. 2 is a control flow diagram according to the embodiment.

3A and 3B are explanatory views of a conventional device, FIG. 3A is an arrangement diagram of a grill, and FIG. 3B is an explanatory diagram of arrangement of a solar radiation sensor.

FIG. 4 is a control flow diagram according to the conventional device.

[Explanation of symbols]

 1 Evaporator 2 Fan 3 Driver's seat blow-out grill 4 Center blow-out grill 5 Passenger's seat blow-out grill 6 Driver's air volume adjustment damper 7 Passenger's air volume adjustment damper 8 Driver's solar radiation sensor 9 Passenger's solar radiation sensor 10, 11 Air passage

Claims (1)

[Scope of utility model registration request] 1. A damper provided in each of the air passages of the driver's seat blowing grille and the passenger's seat blowing grille for adjusting the air volume, a sensor for detecting the amount of solar radiation and the direction of solar radiation,
Also, when the respective dampers and sensors are connected and sunlight is shining on either the driver's seat or the passenger's seat, the fan voltage should be reduced after reducing the opening of the damper in the blow-out grille air passage of the seat not exposed to sunlight. By increasing the fan air volume by a predetermined value to keep the air volume of the blowing grill of the seat not exposed to the sunlight constant, and then providing a control device for controlling the air volume of the blowing grill of the seat exposed to the sunlight. An air conditioning system for automobiles, which is characterized in that