JPS62155114A - Airconditioning device for vehicle - Google Patents

Abstract

PURPOSE:To ensure the supply of conditioned air to the rear end of a cabin and enable the effective use of electric power by fitting an electric resistance in series with the power circuit of a fan for the variable revolutions thereof and connecting an auxiliary fan in parallel with said resistance. CONSTITUTION:A rotary switch 35 is operated to connect a movable piece 36 selectively to fixed terminals j-m, thereby setting an air volume to Hi-Lo. In this case, when the movable piece 36 is connected to the terminal m, the air volume is reduced and an electric motor 10 is made live electrically via a sub-electric motor 28. Furthermore, voltage is made to drop and a centrifugal fan 8 rotates. Consequently, air within a vehicle cabin is sucked by the fan 8 and conditioned air is diffused into the cabin. In this case, air fed toward the rear through an auxiliary duct is forcibly supplied with an auxiliaryh fan 29. According to the aforesaid constitution, electric power can be used effectively and conditioned air can be supplied to the rear end of the cabin.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vehicle air conditioner that adjusts the calmness d1 of a blower by raising and lowering the rotational speed of an electric motor through an electric resistor. .

[Prior Art 1] Conventionally, air conditioners for automobiles have been designed to supply cold or warm air into the vehicle interior from the front side, where the front instrument panel is located, using a blower consisting of an electric motor and a fan.

Generally, the amount of air blown by this blower is set so that it can be adjusted to be large, medium or small depending on the situation.

This is constructed by connecting a number of electrical resistors in series to the motor according to the number of adjustment stages, and by selectively energizing the electrical resistors, the amount of voltage drop applied to the motor can be adjusted from large to medium. It changes the

[Problem to be solved by the invention 1] However, when driving, air is sometimes blown from the front of the vehicle interior, so when the air blower is adjusted to a particularly small setting, it is difficult for cold or warm air to reach the rear. There is an inconvenience. Furthermore, in this case, all of the electrical resistors in series are energized in order to maximize the voltage drop applied to the motor, so there is a problem that power is wasted.

The present invention has been made in view of the above circumstances, and its purpose is to provide an excellent vehicle for first and second vehicles, which allows cold or warm air to reach the rear of the vehicle during driving, and also enables effective use of electric power for adjusting the wind. Located in providing air conditioning equipment.

[Means for Solving the Problems 1] The present invention comprises a blower including a fan driven by an electric motor and supplying air into the passenger compartment from the front panel side of the front section through a cooling unit or a heater core when energized; A plurality of air channels are connected in series to the electric circuits of the eight electric motors and selectively connected to the air guide path, which opens toward the front of the vehicle interior and has the other end directed from the front to the rear. A circuit is connected in parallel to a predetermined one of these electrical resistors, and a circuit is connected in parallel to a predetermined one of these electrical resistors, which lowers or lowers the rotational speed of the motor when energized. The auxiliary air blower fIi blows air from the front side to the rear side.

[Function] According to the present invention configured as described above, the auxiliary blower is driven by the voltage lowered due to the adjustment of the wind m, and the air from the front part of the vehicle interior is supplied to the rear part through the air guide path. It is something that will make you feel better.

[Embodiment 1] A first embodiment of the present invention will be described below with reference to FIGS. 1 to 5. As shown in FIGS. 1 and 2, a passenger car 1 has a passenger compartment divided into a front part 2 and a rear part 3, and a front seat 4 in the front part 2.
, the rear part 3 is provided with a rear seat 5, respectively. An air conditioner 5A 6 is installed between the instrument panel (not shown) in the front part 2 of the passenger car 1 and the engine front, and the blower 7 of this casing 9 has a centrifugal fan 8 disposed therein. It consists of an electric motor 10 that drives this centrifugal fan 8. The casing 9 of the air blower 'e37 has a bell mouth 11 on the top surface, a discharge port 11a is formed on the side surface, and an inside/outside air switching box 12 is attached so as to communicate with the bell mouth 11. The inside/outside air switching box 12 has a first opening 13 and a second opening 14 that communicate with the outside and inside of the vehicle, respectively.
A damper 15 that selectively opens and closes the first opening 13 and the second opening 14 is rotatably supported. On the other hand, a duct 16 is disposed between the blower 7 and the instrument panel, one end of which is connected to the outlet 11a of the casing 9, and the other end connected to the left and right side outlets 17.1 of the front panel.
8, and is also connected to a central vent outlet 19 and a heat outlet 20 close to the floor. A cooling unit 21 and a heater core 22 are disposed within the duct 16, and an air mix damper 23 is pivotally supported between these and selectively rotated to the position indicated by the dashed line and the position indicated by the solid line depending on the cooling/heating operation. It is designed to be moved. In addition, side outlet 17.18
, the vent outlet 19 and the heat outlet 20 are provided with dampers (not shown) which are selectively opened and closed by a mode selector.

Now, the auxiliary duct 24 is attached to the center console 25, and is arranged along the traveling direction of the vehicle with a 34J air passage 26 inside. One end of the auxiliary duct 24 faces the front panel side of the front part 2 as a suction port 24a, and the other end serves as a bifurcated discharge port 24.
It faces the rear seat 5 as b. An auxiliary blower 29 consisting of an auxiliary motor 28 fitted with an axial fan 27 is disposed inside the auxiliary duct 24, and the auxiliary blower 29 is energized and guided as shown by the arrow H in FIGS. 1 and 2. Suction port 2 in air passage 26
He is trying to generate an airflow directed in the direction from 4a to the discharge port 24b.

Now, a register 30 for adjusting the speed of the air blowing 11iiia7 in the air conditioner 6 is installed inside the discharge port 11a of the casing 9. This register 30
As shown in FIGS. 3 and 4, it has a flat plate-shaped stay 31 formed of an insulated plus book, and coil-shaped electric resistors 32 and 33 are attached to the front side of this stay 31, and the back side A connector 34 for connecting terminals e to h is formed on the side. The electrical resistors 32 and 33 have equal resistance values, one electrical resistor 32 is connected between terminals e and 1, and the other electrical resistor 33 is connected between terminals 110, as shown in FIG. The electrical resistors 32, 33 are in series with each other. Further, a rotary switch 35 for changing the air volume is installed on the instrument panel inside the vehicle, and this rotary switch 35 is selectively connected to fixed contacts j, k, 1, and m, and to the waist m. It has a movable contact piece 36. The fixed contacts j, l, and m of the rotary switch 35 have I-(i, Ml, M2,
Lo symbols are marked in order. In this state, terminals e, f, g, and h of the connector 34 are connected to the rotary switch 3.
5 fixed contacts j, k, 1 and m in this order, and a power storage battery 37 is connected between the terminal e and the movable contact piece 36 via an electric motor 10 in series. This-
h, the auxiliary motor 28 of the auxiliary air blower t/329 has an internal resistance set to, for example, the resistance value of three electrical resistors 32, and this auxiliary motor 28 is connected between the terminals e and h of the connector 34 to increase the electrical resistance. It is in a parallel state to the body 32.33.

Next, the effect of the above case will be explained.

First, if you want to cool the inside of your vehicle during the summer,
Rotate the air mix damper 23 to the position shown by the solid line, operate the cooling unit 21, and in this state operate the 〇-tally switch 35 to connect the movable contact piece 36 to the fixed terminal m marked with the symbol Lo, for example. . Then, the electric motor 10 is energized via the auxiliary electric motor 28 to rotate the centrifugal fan 8. At this time, the damper 15 causes the inside/outside air switching box 12 to
While opening the first opening 13 and closing the second opening 14, the mode selector closes the heat outlet 20 and opens the side outlet 17, 18 and the vent outlet 19. Then, the air inside the vehicle is transferred to the centrifugal fan 8.
The air is sucked into the inside/outside air switching box 12 through the first opening 13, flows into the casing 9 through the bell mouth 11, and flows through the duct 16 through the discharge port 11a. As the air flows through the duct 16, it is cooled by the cooling unit 21, and is discharged into the vehicle interior from the side outlets 17, 18 and the vent outlet 19 as cold air. In this case, there is a voltage drop equivalent to the internal resistance valve of the auxiliary motor 28 in the auxiliary blower 29, that is, three electric resistors 32, so that the electric Ij! ! The voltage to io is significantly reduced and its rotational speed drops to obtain a minimum of zero cold air. Furthermore, in this case, the auxiliary motor 28 in the auxiliary ventilation gap 29 is energized, so the axial fan 27 is rotationally driven. The cold air discharged from the air conditioner 6 into the vehicle interior by the axial fan 27 is directed from the suction port 24a of the auxiliary duct 24 in the direction of arrow 1'' in FIGS. 1 and 2 through the air guide path 26 to the discharge port 24b. from there to the rear part 3 inside the vehicle. therefore,
The cold air discharged into the middle compartment reaches the front part 2) Even in the most favorable circumstances, the auxiliary duct 24 allows the cold air to reach the rear part 3, making the rear seats 5 uncomfortable in the heat of the summer. I will never make you lie.

Also, by operating the rotary switch 35, the movable contact piece 36
terminal 1 and terminal k marked with symbols M1 and M2
When connected in sequence, the auxiliary motor 28 is cut off and the two auxiliary blowers are stopped, and in this state, the motor 10 is sequentially energized via the electrical resistors 32, 33 and 32 by the terminals IJ and K. As in the case above, the cold air is υ
It is discharged into the vehicle interior from the idle air outlet 17, 18 and the vent air outlet 19. In this case, the electric motor 10 has an electric resistor 3
2.33 or because each electric resistor 32 sequentially receives a voltage drop corresponding to t, the rotational speed of the electric motor 10 increases compared to the above case, and two intermediate cold air intervals are obtained. It will be done.

Further, when the movable contact piece 36 of the rotary switch 35 is connected to the fixed terminal J marked with the symbol H1 instead of the fixed terminal K, the electric gl 101c is energized and cold air is discharged to the center white in the same manner as above. In this case, since the fixed terminal J of the rotary switch 35 is directly connected to the storage battery 37, the motor 10 is not subject to voltage drop due to the electrical resistor.
Therefore, the number of rotations increases further and the maximum amount of cold air m is reduced by 1.

In addition, when performing heating in winter, etc., the heater core 22 is operated instead of the cooling unit 21, the damper 15 is rotated from the solid line to the position shown by the dashed line, and in this state, the rotary switch 35 is operated to control the movable contact. 36 is connected to the terminal m, for example. Then, the air is blown by the electric motor 7 (10 is energized via the auxiliary motor 28 of the auxiliary blower 29), and the centrifugal fan 8 rotates.

At this time, while keeping the damper 15 of the inside/outside air switching box 12 in the same position as when cooling, the mode selector can be used to select, for example, the side outlet 17, 18 and the vent outlet 1.
9 is closed and the heat outlet 20 is opened.

Then, the air inside the vehicle is sucked into the inside/outside air switching box 12 through the first opening 13 by the centrifugal fan 8 and is passed through the bell mouth 11.
It flows into the casing 9 through the discharge port 11a and flows through the duct 16. As the air flows through the duct 1G, it is heated by the heater core 22, and the warm air is turned into warm air and discharged from the heat outlet 20 into the vehicle interior. In this case, as in the case of cooling, the internal resistance valve of the auxiliary electric motor 28 causes a voltage drop, so the voltage applied to the electric motor 10 becomes the minimum, its rotational speed decreases, and the minimum amount of hot air is obtained. In addition, in this case, since the auxiliary motor 28 is energized, the axial flow)
1 is being driven to rotate. In addition, the hot air discharged into the vehicle interior is transferred to the rear part 3 of the vehicle interior through the auxiliary duct 24 in the same manner as in the case of cooling. Therefore, even if there is a situation where the warm air discharged into the conductor is absorbed by the front section 2, the auxiliary duct 24 allows the warm air to reach the rear section 3, and the passengers in the rear seats 5 are protected from cold weather such as winter. The inconvenience that increases pleasure is resolved.

Next, when the rotary switch 35 is operated to connect the movable contact piece 36 to terminal 1, terminal 1, and terminal j in sequence,
Kenden i! The power to one unit 28 is cut off and the auxiliary blower 29 is stopped, and in this state, the rotational speed of the electric motor d10 is increased in order as in the case of cooling, and a two-stage intermediate warm air is obtained.
Eventually, the rotational speed of the electric motor 10 reaches its upper limit, and the maximum amount of hot air can be obtained.

When the air conditioner 6 is operated, if the damper 15 is moved from the solid line to the position shown by the dashed-dotted line, the first opening 13 is closed and the second opening 14 is opened. Outside air is drawn into the inside/outside air switching box 12. Further, during heating, in addition to the heat outlet 20, the side outlet 11.18 and the vent outlet 19 can be opened in appropriate combinations using the mode selector.

As described above, in the above embodiment, since the auxiliary air blower [29 is provided together with the auxiliary duct 24, the air reaches the rear seat 5 during the cooling/heating operation, thereby eliminating the discomfort of the occupants due to cold and hot weather in winter and summer. Moreover, the power to the auxiliary electric fan R28 of the auxiliary blower 29 is compensated for by the voltage drop for adjusting the airflow of the blower 7, so the power is used effectively and is not wasted. .

Next, a second embodiment of the present invention will be described based on FIG. 6, with only the differences from the first embodiment. In FIG. 6, the same parts as in FIGS. 1 to 5 of the first embodiment are designated by the same reference numerals. In this second embodiment, a manual switch 38 is provided in the rear part 3 of the vehicle interior, and this switch 38 is connected to the connector 3.
4 and the auxiliary motor 28 of the auxiliary blower 29. This manual switch 38 has a movable contact piece 40 with one end connected to a terminal and the other end facing a fixed contact 39 on the auxiliary motor 28 side. In addition, an auxiliary resistor 41 having a resistance value equal to that of the electric resistors 32 and 33 is provided, and one end of this is connected in series to the electric resistor 33.I! ! The fixed contact 42 corresponds to the movable contact piece 40 at the end. In this case, the resistance value obtained by adding the auxiliary resistor 41 to the electric resistors 32 and 33 corresponds to the internal resistance value of the auxiliary motor 28, and the manual switch 3
The movable contact piece 40 of No. 8 is configured to reciprocate between the fixed contact 39 and the fixed contact 42. According to this second embodiment, when operating the auxiliary blower 29, the occupant can operate the manual switch 3B from the rear seat 5 as necessary, thereby moving the movable contact piece 40 away from the fixed contact 39 and moving the movable contact piece 40 away from the fixed contact 40.
The auxiliary air blower Ia29 can be stopped by connecting to the auxiliary air blower Ia29. Moreover, the electric resistors 32 and 33 and the auxiliary resistor 41
As a result, a voltage drop corresponding to the auxiliary motor 28 occurs, so that the minimum weathering supply is continuously maintained as in the first embodiment.

In the above embodiment, the resistance values of the electric resistors 32 and 33 and the auxiliary resistor 41 are set to be equal, but these can be changed and applied as appropriate. In addition, although the axial fan 27 is provided inside the auxiliary duct 1, it is not limited to this, and depending on the shape of the auxiliary duct 24, a centrifugal fan such as a sirocco fan may be used. Furthermore, the auxiliary blower 29 is not limited to being driven only when the air volume is at its minimum, but may be drawn to be driven when the air volume is set to another level. Various changes may be made in carrying out the invention without departing from the spirit of the invention.

[Effects of the Invention] As stated above, according to the present invention, cold air or warm air reaches the rear of the vehicle during driving, so that passengers in the rear seats do not feel uncomfortable due to cold or hot weather, and at the same time, the wind is It is possible to provide an excellent vehicle air conditioner in which electric power for adjustment is effectively used.

[Brief explanation of drawings]

1 to 5 show a first embodiment of the present invention;
The figure is a partially cutaway side view of the passenger car, Figure 2 is a partially cutaway top view of the passenger car, Figures 3 and 4 are perspective and plan views of the register from different directions, and Figure 5 is an electrical wiring diagram, and FIG. 6 is a fifth diagram showing the second embodiment of the present invention.
It is a figure equivalent figure.

Claims (3)

[Claims] (1) A blower that is equipped with a fan driven by an electric motor and supplies air into the passenger compartment from the front panel side of the front through a cooling unit or heater core when energized; an air guide path provided with an end oriented from the front to the rear; a plurality of electrical resistors connected in series to the electrical circuit of the motor and selectively energized to increase or decrease the rotational speed of the motor; and an auxiliary blower which is circuit-connected in parallel to a predetermined one of these electric resistors and blows air from the front side to the rear side through the air guide path when energized. harmonization device. (2) The vehicular air conditioner according to claim 1, wherein the circuit of the auxiliary blower is connected in parallel to all of the electrical resistors connected in series. (3) The vehicle air conditioner according to claim 1, wherein a manual switch is provided on the rear side of the empty vehicle to open and close the energizing circuit of the auxiliary blower as desired.