JPH0717150B2 - Air conditioner for vehicle - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an air conditioner having a discharge port on each of a front seat side and a rear seat side of a vehicle.

[Prior Art] An air conditioning (air conditioning) unit to be mounted on a vehicle is generally arranged in the instrument panel at the front of the passenger compartment, and has a front seat (front seat).
It was provided so as to discharge air according to the setting mode to each part of the occupant in the front seat from each air discharge port provided in front of the. Therefore, the occupant in the rear seat (rear seat) has a problem in that the comfort is deteriorated as compared with the occupant on the front seat side, because the air blown to the front seat side performs air conditioning.

Therefore, conventionally, a dual air conditioner type air conditioner has been devised in which a rear air outlet for the rear seat is also provided on the rear seat side.

[Problems to be Solved by the Invention] However, the conventional dual air conditioner type air conditioner improves air conditioning for passengers in the rear seats compared to an air conditioner having no rear air outlet, but The air discharged from the side air discharge port is greatly affected by the flow of air discharged from the front air discharge port.
Or, there is a problem that comfort is impaired depending on the set air volume.

The present invention provides an air conditioner for a vehicle that effectively uses the air discharged from the front air discharge port and the air discharged from the rear air discharge port to improve the comfort of the vehicle occupant.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a front seat air-conditioning unit having a discharge port on the front seat side of a vehicle, and a discharge port on the rear seat side of the vehicle. A rear seat air-conditioning means, a front inlet that is mounted on the ceiling of the vehicle and that is open to the front seat side toward the discharge port, and a rear intake port that is open to the rear seat side at the discharge port side. A blower having an outlet for blowing out air sucked from at least one of the front suction port and the rear suction port is adopted.

[Operation] The vehicle air conditioner of the present invention having the above-mentioned configuration,
When the blower discharges the air sucked from the front inlet from the outlet, the air blown from the outlet of the air conditioning means for the front seat to the ceiling side of the vehicle is sucked from the front inlet and blown from the outlet of the blower. put out.

When the blower discharges the air sucked from the rear intake port from the discharge port, the air blown to the ceiling side of the vehicle from the discharge port of the air conditioning means for the rear seats is sucked from the rear intake port and blown from the blower port of the blower. Blow out.

[Advantages of the Invention] According to the present invention described above, the air discharged from the front seat air conditioning means and the rear seat air conditioning means to the ceiling side of the vehicle is
Since the air can be effectively supplied in the direction in which the air outlet of the blower is directed, the comfort of the vehicle occupant can be improved.

[Embodiment] Next, an air conditioning apparatus for a vehicle of the present invention will be described based on an embodiment shown in the drawings.

FIG. 1 shows a side sectional view of an automobile to which the present invention is applied. The refrigeration cycle of this automobile 1 includes a refrigerant compressor 2, a refrigerant condenser 3, a front seat refrigerant decompression device 4, a front seat refrigerant evaporator 5, a rear seat refrigerant decompression device 6, and a rear seat refrigerant evaporator 7. A refrigerant pipe consisting of a solenoid valve 8 and a receiver 9 for shutting off the refrigerant.
10 connected.

This front-seat refrigerant evaporator 5 is a front-seat air-conditioning case which is a front-seat air-conditioning means arranged in an instrument panel (not shown).
It is located in 11 airflow passages. A heater core 12 is arranged in series with the front seat refrigerant evaporator 5 in the air flow passage of the front seat air conditioning case 11. This heater core
12 is the engine 13 water jacket and cooling water piping
The cooling water is supplied to the heater core 12 by a solenoid valve 15 provided in the cooling water pipe 14 for shutting off the cooling water.
Controlled by.

The front seat air-conditioning case 11 includes an outside air inlet 16 for introducing outside air (outside air), an inside air inlet 17 for introducing inside air (inside air), a defroster outlet 18 for discharging air to the windshield, A vent outlet (20) for discharging air to the chest of the passenger in the front seat (19) and a foot outlet (21) for discharging air to the feet of the passenger in the front seat are provided. Both of these inlets 16 and 17 and the outlets 18, 20 and 21 have two inlets 16 and 17 and the outlets.
A damper for opening and closing 18, 20, 21 is provided, and this damper is arbitrarily operated by a vehicle occupant. In addition, a blower fan 22 is installed in the front seat air conditioning case 11,
The outside air introduction port 16 is driven by driving the blower fan 22.
Also, the outside air or the inside air selected by the damper is discharged from the inside air introduction port 17 from the air outlet selected by the damper.

On the other hand, the rear-seat refrigerant evaporator 7 is arranged in the air flow passage of the rear-seat air-conditioning case 24, which is the rear-seat air-conditioning means disposed at the rear of the rear seat 23. The rear seat air-conditioning case 24 is provided with an inside air inlet 25 for sucking air in the passenger compartment and an upper outlet 26 for discharging air to the upper side of the rear seat 23. By driving 27, the air sucked from the inside air inlet 25 is discharged from the upper outlet 26.

A cross-flow type blower 29 is mounted on the vehicle ceiling 28 between the front seats 19 and the rear seats 23. The blower 29 includes a casing 30, a damper link mechanism 31, and a blower 32.

As shown in FIGS. 2 and 3, the casing 30 includes a front intake port 33 opening to the front (right side in FIG. 2), a rear intake port 34 opening to the rear (left side in FIG. 2), and a vehicle. And a blowout port 35 that opens toward the floor. A louver 36 for changing the flow direction of the discharged air is provided on the downstream side of the air outlet 35.
The louver 36 is mounted in any direction by the vehicle occupant (for example, the foot side of the occupant on the rear seat 23 side or the occupant side on the front seat)
It can be changed to. The front inlet 33 is provided with a front opening / closing door 37 for opening / closing the front inlet 33, and the front opening / closing door 37 is rotatably supported by the casing 30 at the upper end of the front inlet 33. . The rear suction port 34 is provided with a rear opening / closing door 38 for opening / closing the rear suction port 34. The rear opening / closing door 38 is rotatable with respect to the casing 30 at the upper end of the rear suction port 34. Supported by. The air outlet 35 closes part of the front air inlet 33 side and the rear air inlet 34 side of the air outlet 35, and the distance between the front air inlet 33 and the air outlet 35, and the distance between the rear air inlet 34 and the air outlet 35. A front variable damper 39 and a rear variable damper 40 for varying the (nose gap) are attached.
The front variable damper 39 is a casing at the front end of the air outlet 35.
The rear variable damper 40 is rotatably supported by 30 and has an outlet.
It is rotatably supported by a casing 30 at the rear end of 35.

The damper link mechanism 31 includes the front opening / closing door 37 and the rear opening / closing door.
38, the front variable damper 39 and the rear variable damper 40 are driven in conjunction with each other. The damper link mechanism 31 uses a negative pressure actuator 41 that utilizes negative pressure of the engine as a drive source. This negative pressure actuator 41 includes an actuator case 42
A diaphragm 43 slidably supported in the actuator case 42, a spring 44 for constantly urging the diaphragm 43 outward in the actuator case 42, and a negative pressure port for introducing a negative pressure into the actuator case 42. When the negative pressure is not introduced into the actuator case 42, the diaphragm 43 is located on the solid line side in FIG. 2 by the action of the spring 44, and when the negative pressure is introduced into the actuator case 42, 43 is located on the one-dot chain line side in FIG. 2 against the spring 44. One end of a drive shaft 46 is attached to the diaphragm 43, and an upper end lever 47 is fixed to the other end of the drive shaft 46. As a result, when the diaphragm 43 moves, the upper end lever 47 moves in the same direction. At the front end of the upper end lever 47, the other end of a front side opening / closing link 48, which has one end fixed to the support portion of the front side opening / closing door 37, is rotatably supported. Accordingly, when the upper end lever 47 moves forward, the front opening / closing door 37 closes the front intake port 33, and when the upper end lever 47 moves rearward, the front opening / closing door 37 opens the front intake port 33. Further, at the rear end of the upper end lever 47, one end is fixed to the supporting portion of the rear opening / closing door 38, and the rear opening / closing link is provided.
The other end of 49 is rotatably supported. Thus, when the upper end lever 47 moves forward, the rear opening / closing door 38 or the rear intake port 34 is opened, and when the upper end lever 47 moves rearward, the rear opening / closing door 38 closes the rear intake port 34. Let Furthermore, at both ends of the upper end lever 47, a front side lever perpendicular to the upper end lever 47 is provided.
The upper ends of 50 and the rear lever 51 are fixed. At the lower end of the front lever 50, the other end of a front damper link 52, one end of which is attached to an intermediate position on the side surface of the front variable damper 39, is rotatably attached. As a result, in the front variable damper 39, the upper end lever 47 moves forward,
By moving so as to shorten the distance between the front inlet 33 and the outlet 35 and moving the upper end lever 47 rearward, the distance between the front inlet 33 and the outlet 35 is increased. Moving. Further, the lower end of the rear lever 51 is rotatably attached to the other end of a rear damper link 53, one end of which is attached to an intermediate position on the side surface of the rear variable damper 40. As a result, the rear variable damper 40 moves to increase the distance between the rear intake port 34 and the blowout port 35 by moving the upper end lever 47 forward, and the upper end lever 47 moves rearward. By doing so, it moves so as to shorten the distance between the rear suction port 34 and the blowout port 35.

The blower unit 32 includes a radial fan 55 having a fan blade 54 directed toward the center and a drive motor 56 that rotationally drives the radial fan 55. The radial fan 55 is rotated in the direction of arrow A in FIG. By positioning 47 on the rear side (does not introduce negative pressure into the actuator case 42), the air on the vehicle ceiling side in front of the blower 29 is sucked from the front inlet 33, and the louver 36 is directed from the outlet 35. Discharge in the direction. Further, by rotating the radial fan 55 in the direction of arrow B in FIG. 2 and positioning the upper end lever 47 on the front side (inducing negative pressure into the actuator case 42), air on the vehicle ceiling side behind the blower 29 is blown. The rear inlet
It is sucked from 34 and discharged from the outlet 35 in the direction in which the louver 36 is directed.

FIG. 4 shows an electric circuit of this embodiment.

The electric circuit 57 includes a battery 58 that is a power source of the drive motor 56,
Rotation of a main switch 60 and a drive motor 56 which are interlocked with a changeover switch 59 for switching the direction of current supplied from the battery 58, an air conditioner switch and a heater switch (not shown), and are turned on by turning on the air conditioner switch or the heater switch. It consists of a variable resistor 61 for varying the speed.

The air conditioner switch (not shown) is provided on the vehicle instrument panel so as to be operated by the vehicle occupant, and the front seat air conditioning case 11
The front and rear seat cooling modes in which both front and rear seat air-conditioning cases 24 perform cooling, and the front seat cooling mode and OFF mode in which only the front seat air-conditioning case 11 performs cooling are set.

The changeover switch 59 is interlocked with the air conditioner switch, and is set to the position of the broken line in FIG. 4 only when the air conditioner switch is set to the front and rear seat cooling mode, and the radial fan 55 is moved in the direction of arrow B in FIG. Rotate to. Further, the solenoid valve (not shown) for supplying / discharging the negative pressure to / from the actuator case 42 of the negative pressure actuator 41 is a changeover switch.
Similarly to 59, the solenoid valve is provided so as to guide the negative pressure into the actuator case 42 only when the front and rear seat cooling mode is set in association with the air conditioner switch.

Next, the operation of the above will be described.

a) When the air conditioner switch is set to the OFF mode and the heater is also turned off, cooling by the front seat side air conditioning case 11 and the rear seat side air conditioning case 24 is not performed. In addition, a solenoid valve for shutting off the cooling water 15
Since it is also OFF, heating by the front seat air conditioning case 11 is not performed.

In the damper link mechanism 31, since the negative pressure is not introduced into the actuator case 42 of the negative pressure actuator 41, the upper end lever 47 is located on the front side, the front suction port 33 is opened, and the rear suction port 34 is closed. At the same time, the front variable damper 39 sets the distance between the front suction port 33 and the air outlet 35 to be long.

Since the main switch 60 of the electric circuit 57 is turned off, the drive motor 56 is de-energized and the radial fan 55 does not rotate.

b) When the air conditioner switch is set to the OFF mode and the heater is turned on, cooling by the front seat air conditioning case 11 and the rear seat air conditioning case 24 is not performed. On the other hand, the electromagnetic valve 15 for shutting off the cooling water is turned on, and the cooling water is supplied into the heater core 12 in the front seat air conditioning case 11. The cooling water supplied into the heater core 12 is heat-exchanged with the air sucked by the blower fan 22. The air that has passed through the heater core 12 is discharged to the front seat 19 side from the air outlet of the front seat air conditioning case 11.

In the damper link mechanism 31, since the negative pressure is not introduced into the actuator case 42 of the negative pressure actuator 41, the front side suction port 33 of the casing 30 is opened and the rear side suction port 34 is closed, as in the above a). , Front variable damper 39 is front suction port
Set a longer distance between 33 and outlet 35.

Since the main switch 60 of the electric circuit 57 is turned on and the changeover switch 59 is set to the position shown by the solid line in FIG. 4, the radial fan 55 is rotated in the direction of arrow A in FIG.

As a result, the warm air discharged from the front seat air-conditioning case 11 to the vehicle ceiling 28 is discharged from the air outlet 35 sucked from the front inlet 33 of the blower 29, and warm air is blown in the direction in which the louver 36 is directed. Is discharged.

c) When the air conditioner switch is set to the front seat cooling mode, the cooling compressor 2 is driven, the refrigerant compressed by the refrigerant compressor 2 is liquefied and condensed by the refrigerant condenser 3, and then liquefied by the receiver 9. Only the refrigerant is extracted. Since the solenoid valve 8 for shutting off the refrigerant is closed for the refrigerant flowing out from the receiver 9,
All of the refrigerant flows into the front seat refrigerant decompression device 4, is adiabatically expanded by the front seat refrigerant decompression device 4, and flows into the front seat refrigerant evaporator 5. The low-temperature mist-like refrigerant flowing into the front seat refrigerant evaporator 5 is heat-exchanged with the air sucked by the blower fan 22, and then sucked again by the refrigerant compressor 2 to repeat the above cycle. Then, the cooling air that has passed through the front seat refrigerant evaporator 5 is discharged from the air outlet set by the vehicle occupant.

In the damper link mechanism 31, since the negative pressure is not introduced into the actuator case 42 of the negative pressure actuator 41, the front side suction port 33 of the casing 30 is opened and the rear side suction port 34 is closed, as in the above a). , Front variable damper 39 is front suction port
Set a longer distance between 33 and outlet 35.

The main switch 60 of the electric circuit 57 is turned on, and the radial fan 55 is rotated in the direction of arrow A in FIG.

As a result, the cooling air blown from the front seat air-conditioning case 11 to the vehicle ceiling is sucked from the front suction port 33 of the blower 29 and discharged from the blowout port 35 to cool the direction in which the louver 36 is directed.

d) When the air conditioner switch is set to the front and rear seat cooling mode, the refrigerant compressor 2 is driven, the refrigerant compressed by the refrigerant compressor 2 is liquefied and condensed by the refrigerant condenser 3, and then the receiver 9
Only the liquefied refrigerant is discharged. Since the electromagnetic valve 8 for shutting off the refrigerant is opened, the refrigerant flowing out of the receiver 9 flows into the refrigerant decompressing device 4 for the front seat and the refrigerant decompressing device 6 for the rear seat separately. The refrigerant that has flowed into the front-seat refrigerant decompression device 4 is adiabatically expanded by the front-seat refrigerant decompression device 4 into a low-temperature mist, flows into the front-seat refrigerant evaporator 5, and is sucked by the blower fan 22. Heat exchange with air. On the other hand, the refrigerant that has flowed into the rear seat refrigerant decompression device 6 is adiabatically expanded by the rear seat refrigerant decompression device 6 into a low-temperature mist, flows into the rear seat refrigerant evaporator 7, and is sucked by the blower fan 27. Heat is exchanged with the generated air.
The refrigerant that has passed through the front seat refrigerant evaporator 5 and the rear seat refrigerant evaporator 7 is sucked into the refrigerant compressor 2 again, and the above cycle is repeated. The cooling air that has passed through the front-seat refrigerant evaporator 5 is blown to the front seat side from the front-seat air conditioning case 11, and the cooling air that has passed through the rear-seat refrigerant evaporator 7 is the hole air-conditioning case 24.
Is discharged from the upper outlet 26 of the.

Since the damper link mechanism 31 introduces negative pressure into the actuator case 42 of the negative pressure actuator 41, the damper link mechanism 31 has a casing.
The rear suction port 34 is opened and the front suction port 33 is closed, and the rear variable damper 40 sets a long distance between the rear suction port 34 and the discharge port 35.

The main switch 60 of the electric circuit 57 is turned on, the changeover switch 59 is set to the position shown by the broken line in FIG. 4, and the radial fan 55 is rotated in the direction of arrow B in FIG.

As a result, the front seat 19 side is cooled by the cooling air blown from the front seat air-conditioning case 11, and the cooling air blown from the rear seat air-conditioning case 24 to the vehicle ceiling 28 is the rear suction port of the blower 29. It is sucked from 34 and blown out from outlet 35, and louver 36
Cool down the direction of.

In the above embodiment, an example in which a radial fan is used as a fan for blowing air is shown, but a sirocco fan, an axial fan, or the like may be used.

In the above embodiment, an example in which the rotation direction of the fan is reversed is shown, but it is not necessary to reverse the rotation direction.

Further, in the above-described embodiment, an example is shown in which suction is performed from either the front side or the rear side, but it is also possible to suction from both the front and rear sides simultaneously.

Further, in the above-described embodiment, the example in which the negative pressure is used as the drive source of the damper is shown, but other drive sources such as an electric motor and hydraulic pressure may be used.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of an air conditioning apparatus for a vehicle according to the present invention, FIG. 2 is a side sectional view of a blower, FIG. 3 is a rear view of the blower, and FIG. 4 is an electric circuit of the blower. It is a figure. In the figure, 11 ... front air conditioning case, 19 ... front seat, 23 ... rear seat, 24 ...
Rear seat air-conditioning case, 28 ... Ceiling part, 29 ... Blower, 33 ... Front inlet, 34 ... Rear inlet, 35 ... Air outlet

Claims (1)

[Claims] 1. An air conditioner for a front seat having a discharge port on a front seat side of a vehicle, and a rear seat air conditioner having a discharge port on a rear seat side of the vehicle. (C) A front suction port that is mounted on the ceiling of the vehicle and that is open to the discharge port side of the front seat side, a rear suction port that is open to the discharge port side of the rear seat side, the front suction port, or the An air conditioner for a vehicle, comprising: a blower having an air outlet that blows out air taken in from at least one of the rear air inlets.