JPH04974Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an air conditioner for an automobile that is capable of independently air conditioning the front seat side and the rear seat side of a vehicle interior.

Prior Art Conventionally, as an air conditioner for automobiles that can perform air conditioning independently for the front seat side and the rear seat side, the one disclosed by the applicant in Japanese Patent Application No. 100284/1983 has been proposed. There is. This air conditioner is of a so-called reheat air mix type, and air introduced into the device is once cooled and a portion of it is heated by a heater. On the downstream side of the heater, a first air passage communicating with the front seat air outlet and a second air passage communicating with the rear seat air outlet are defined by a partition plate having a communication hole. . Further, the communication hole is provided with front and rear mode doors that open and close the communication hole or the second air passage depending on the mode.

Here, the mode refers to the manner in which air conditioned air is supplied to the occupants.Front seat mode refers to the manner in which conditioned air is supplied only to the front seat occupants, and front/rear seat mode refers to the manner in which air conditioned air is supplied to the front seat and rear seat occupants. Refers to the method of supplying wind.

If an occupant is seated only in the front seat, the front and rear mode doors are set to the front seat mode. Then, the second air passage is closed, and the conditioned air on the second air passage side flows into the first air passage through the communication hole. Therefore, conditioned air can be blown out only from the front seat air outlet communicating with the first air passage. Next, when occupants are seated in the front and rear seats, the front and rear mode doors are set to the front and rear seat modes. Then, the through hole is closed, the second air passage is opened, and conditioned air is blown out from each of the front and rear seat outlets. Moreover, at this time, the temperature of the conditioned air can also be adjusted for each air passage by means of the air mix doors provided in each of the first and second air passages. Therefore, each passenger in the front seat and the rear seat can independently obtain conditioned air at their desired temperature.

However, in this automotive air conditioner, a predetermined amount of air introduced by a single blower flows only through the first air passage in the front seat mode, and in the front and rear seat modes, , the flow is divided into both second air passages. Therefore, for example, when changing from the front seat mode to the front/rear seat mode, the amount of air flowing through the first air passage side is relatively reduced by the amount of air flowing through the second air passage side. Conversely, when changing from the front/rear seat mode to the front seat mode, the amount of air flowing through the first air passage side increases relatively due to the amount of air flowing in from the second air passage side through the through hole. do.

For this reason, even though the front seat occupant has set the blower to his/her desired air volume in advance, when changing the mode, the passenger feels discomfort due to insufficient air volume and discomfort due to excessive air volume. There were concerns about the disadvantages of being forced to do so.

Purpose of the invention The present invention was made in view of the above-mentioned actual situation of the air conditioner for automobiles, and when the front and rear mode doors are changed from the front seat mode to the front/rear seat mode, the air volume is reduced. The air conditioning system for automobiles eliminates the discomfort caused by insufficient air volume and excessive air volume for front seat occupants by increasing the compensation and decreasing the compensation when changing from front/rear seat mode to front seat mode. The purpose is to provide

Structure of the invention In order to achieve the above-mentioned purpose, the present invention has the following features:
a casing having an inlet at one end and a front seat outlet and a rear seat outlet at the other end; a blower disposed within the casing and introducing air from the inlet; a temperature regulator that independently controls the temperature of the air introduced into a first air passage communicating with the front seat air outlet and a second air passage communicating with the rear seat air outlet; and a temperature regulator downstream of the temperature regulator. a partition plate vertically installed on the side so as to bisect the casing and defining the first air passage and the second air passage;
A communication hole that communicates with an air passage; A front and rear mode door rotates to a front/rear seat mode position to open an air passage, and an air flow rate is increased in accordance with rotation of the front/rear mode door from a front seat mode position to a front/rear seat mode position, and A control device is provided to control the rotational speed of the blower so as to reduce the amount of air blown according to the rotation from the front/rear seat mode position to the front seat mode position, and the front seat mode is the front/rear seat mode. When changing the airflow, the amount of air applied to the occupants remains the same, so that the feeling of wind speed does not change.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. That is, as shown in FIGS. 1 and 2, the casing 2 of the automobile air conditioner 1 is provided with an inlet 3 at one end for introducing inside and outside air into the casing 2. Further, on the other end side of this casing 2, a front seat air outlet 8 provided on the front seat 7a side, such as a defroster air outlet 4, a vent air outlet 5, a foot air outlet 6, etc., and a rear seat air outlet 9 are provided. ing. The rear seat air outlet 9 includes a duct 9a extending toward the rear seat 7b, as shown in FIG. Further, opening/closing doors 4a, 5b, 6b are provided at each of the defroster, vent, and foot outlet ports 4, 5, and 6, respectively.

Near the suction port 3 in this casing 2,
A blower 11 driven by a motor 10 is provided. On the downstream side of the blower 11, an evaporator 12 as a cooler and a heater core 13 as a heater are sequentially provided. The evaporator 1
2 is installed in a refrigeration cycle (not shown),
Further, the heater core 13 is located at the center of the casing 2. Further downstream of this heater core 13, a partition plate 1 is provided so as to divide the casing into two.
4 is installed vertically. The partition plate 14 defines a first air passage 15 that communicates with the front seat air outlet 8 made up of the plurality of air outlets described above, and a second air passage 16 that communicates with the rear seat air outlet. Further, on the sides of the heater core 13, there are first and second air passages 15 and 16, respectively, which bypass the heater core 13.
Detours 17 and 18 are provided that communicate with the.
And each detour 17, 18 of the heater core 13
Air mix doors 19 and 20 are respectively pivotally supported on the side edges. The air mix door 19, 20
is on the first and second air passages 15, 16 side,
It has a function of relatively variably controlling the amount of air passing through the heater core 13 and the detours 17 and 18. In this embodiment, an evaporator 12, a heater core 1
3. Detours 17, 18 and air mix door 1
9 and 20 constitute a temperature regulator. On the other hand, the partition plate 14 is provided with a communication hole 21 that communicates with the first and second air passages 15 and 16. A front and rear mode door 2 is provided around the communication hole 21.
2 is pivoted. The front and rear mode doors 22 are
The communication hole 21 is linked to an operation lever not shown in the figure, and the communication hole 21 is
The second air passage 16 is closed and the second air passage 16 is opened.

Next, the electrical configuration of this embodiment will be explained with reference to FIG. As shown in the figure, the motor 10 of the blower 11 has a battery 23 whose negative terminal is grounded.
connected to the positive side of the On the other hand, this motor 1
A fan switch 24 that controls the amount of current supplied to
is the grounded movable contact 25 and each fixed contact OFF,
L ₀ , M ₁ , M ₂ , and H ₁ are provided. Voltage dividing resistors 26a, b, c are connected in series to the fixed contact _L0 , the fixed contact _M1 is connected between the voltage dividing resistors 26a and 26b, and the fixed contact _M2 is connected between the voltage dividing resistors 26b. , 26c, respectively. Further, the voltage dividing resistor 26c includes an auxiliary voltage dividing resistor 27.
and a door switch 28 for operating the front/rear mode door 22 in parallel.
9 is connected. The door switch 28 is
a movable contact 30 connected to the negative pole side of the motor 10 and the fixed contact _H1 ; and the auxiliary voltage dividing resistor 2.
7 and a fixed contact F provided in a circuit that bypasses the voltage dividing resistor 27. Also, this door switch 28
When the movable contact 30 contacts the fixed contact F,
The front/rear mode door 2 is configured to be in the front seat mode, and to be in the front/rear seat mode when it comes into contact with the fixed contact S.

In this embodiment having the above configuration, when the occupant is seated only in the front seat 7a, the door switch 28 is operated to bring the variable contact 30 into contact with the fixed contact F as shown by the broken line. Then, the front and rear mode doors 22 are in the front seat mode position shown by broken lines in FIG. Therefore, the conditioned air on the second air passage 16 side of the partition plate 14 is directed from the communication hole 21 to the first air passage 16 side.
It flows into the air passage 15 side. Therefore, conditioned air flows from the front seat air outlet 8 that communicates with this first air passage.
Air is blown out according to the level of the fan switch 24.

Next, when a passenger is seated in both the front seat 7a and the rear seat 7b, the movable contact 30 of the door switch 28
is brought into contact with the fixed contact S. As a result, the front/rear mode door 22 is placed in the front/rear seat mode position where the communication hole 21 is closed and the second air passage 16 is opened, as shown by the solid line in FIG. Therefore, conditioned air that has been conditioned to a desired temperature by the air mix doors 19 and 20 is transferred into the first and second air passages 15 and 16 according to the level of the fan switch 24. At this time, the door switch 28 of the control device 29 is connected to the auxiliary voltage dividing resistor 2 on the contact S side.
7 can be formed. Therefore, for example, when the movable contact 25 of the fan switch 24 is at a level where it contacts any of the fixed contacts L ₀ , M ₁ , M ₂ , the resistance value of the auxiliary voltage dividing resistor 27 changes due to the mode change described above. The supply voltage of motor 10 can be increased by an amount. Therefore, the blower 1
1 rotates at high speed as the voltage increases, and the amount of air blown is corrected to increase. For this reason, a single blower 11
Transfer air from the first and second air passages 15, 16
Even if the airflow is divided into two, it is possible to suppress a decrease in the air volume on the first air passage 15 side. Front seat 7
The occupants seated in the seat a can continue to enjoy comfortable conditioned air without experiencing any discomfort due to the reduction in air volume.

Also, when changing from the front/rear seat mode to the front seat mode again, the control device 29 controls the auxiliary voltage dividing resistor 2.
Form a circuit that passes through 7. Therefore, when the movable contact 25 is at a level where it contacts any of the fixed contacts L ₀ , M ₁ , M ₂ , the supply voltage to the motor 10 is reduced by the resistance value of the auxiliary voltage dividing resistor 27 . Therefore, the blower 11 rotates at a low speed as the voltage decreases, and the amount of air blown is corrected to decrease. Therefore, it is possible to suppress an increase in the amount of air from the front seat air outlet 8 caused by the air being transferred only to the first air passage 15 side.

Note that when the movable contact 25 of the fan switch 24 is in contact with the fixed contact _H1 , the air volume does not change even if the mode is changed. This is because when the amount of air blown from the blower 11 is extremely large as in this case, the change in air amount that the front seat occupant can feel when changing the mode can be almost ignored.

Effects of the Invention As explained above, the present invention includes a first air passage and a second air passage that independently communicate with the front and rear seat air outlets, and a single blower that blows air into both air passages, respectively. A front and rear mode door is provided having a front seat mode in which conditioned air is passed only through the first air passage, and a front/rear seat mode in which conditioned air is passed through both the first and second air passages. When the mode door changes from front seat mode to front/rear seat mode, the air volume of the blower is increased, and when changing from reverse front/rear seat mode to front seat mode, the air volume is increased. A control device is provided to control the rotation speed of the blower so as to decrease the number of rotations of the blower.

Therefore, when the front/rear mode door is changed from the front seat mode to the front/rear seat mode, a decrease in the amount of air blown out from the front seat outlet is offset by an increase in the amount of air blown. Therefore, it is possible to prevent a relative decrease in the amount of air blown from the front seat air outlet when changing the mode.

Conversely, when changing from the front/rear seat mode to the front seat mode, the increase in the amount of air blown out from the front seat air outlet is offset by the decrease in the amount of air blown. Therefore, it is possible to prevent a relative increase in the amount of air blown from the front seat air outlet when changing the mode.

Therefore, when changing between the front seat mode and the front/rear seat mode, the front seat occupant can eliminate the discomfort caused by changes in the feeling of wind speed due to insufficient or excessive air volume, and can be affected by the mode change. It is possible to continuously obtain comfortable conditioned air without any problems.

[Brief explanation of the drawing]

Fig. 1 is a conceptual diagram showing the installation state of one embodiment of the present invention, Fig. 2 is an overall conceptual diagram of the same embodiment, and Fig. 3 is a conceptual diagram showing the installation state of an embodiment of the present invention.
The figure is an electrical circuit diagram of the same embodiment. DESCRIPTION OF SYMBOLS 1... Automotive air conditioner, 2... Casing, 3... Inlet, 7a... Front seat, 7b... Rear seat, 8... Front seat air outlet, 9... Rear seat air outlet, 10
... Motor, 11 ... Blower, 12 ... Evaporator (cooler), 13 ... Heater core (heater),
14... Partition plate, 15... First air passage, 16...
...Second air passage, 17, 18...Detour, 19,
20...Air mix door, 21...Communication hole, 2
2...Front and rear mode doors, 24...Fan switch, 27...Auxiliary voltage dividing resistor, 28...Door switch, 29...Control device.

Claims (1)

[Claims for Utility Model Registration] A casing having an inlet at one end and a front seat outlet and a rear seat outlet at the other end; a blower that introduces air; and a temperature controller that independently controls the temperature of the air introduced into a first air passage communicating with the front seat air outlet and a second air passage communicating with the rear seat air outlet. a partition plate vertically installed on the downstream side of the temperature regulator so as to bisect the casing and defining the first air passage and the second air passage; a communication hole that communicates with the first and second air passages; and a communication hole that is pivoted around the circumference of the communication hole and that closes the second air passage and opens the communication hole from a front seat mode position. A front and rear mode door that rotates to the front and rear seat mode positions to close and open the second air passage, and an air flow rate that changes according to the rotation of the front and rear mode door from the front seat mode position to the front and rear seat mode positions. and a control device that controls the rotational speed of the blower so as to increase the number of rotations of the blower and decrease the amount of air blown according to the rotation from the front/rear seat mode position to the front seat mode position. Automotive air conditioner.