JP3533670B2 - Vehicle air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle capable of heating a room.
Related to air conditioners for home use, especially the generation of heat for heating
Electric vehicle air conditioner or engine that requires power
Thermal efficiency of engine among hot water heaters using cooling water
Diesel vehicles and lean burn
It is suitable for use as an air conditioner for engine vehicles. [0002] 2. Description of the Related Art In a conventional air conditioner, flow during heating is controlled.
Outdoor air (outside air) to prevent fogging of glass
Suction into the duct and heat it.
It is common to blow out to a star outlet. With this technology
Is to heat the cold outside air and blow it out into the room.
Therefore, large heating capacity is required to heat the room.
You. Accordingly, Japanese Patent Application Laid-Open No. Sho 60-8105 discloses
Like, at the time of heating, indoor air (indoor air)
Heat and blow out, heat the outside air from the defroster outlet
Indoor heating with a small heating capacity by blowing out
Techniques for performing are known. [0003] SUMMARY OF THE INVENTION In an internal combustion engine vehicle
Is raising awareness of improving fuel efficiency and protecting the global environment in recent years.
The power consumption of the air conditioner is kept low by the ball
Demand is high. Furthermore, in electric vehicles,
Due to the requirement to extend the running distance, the power
The demand for keeping power consumption low is even higher. However, above
In the prior art described in the above publication, the opening degree of the air mix damper is
The blowout temperature was adjusted by this. This air mix
To control the temperature of the damper, blow cold and hot air inside the duct.
To mix cold and warm air by increasing ventilation resistance.
So the mixed air is blown out from the selected outlet
It is. In other words, in the conventional technology, the ventilation resistance in the duct
Since it is large, there is a problem that the power consumption of the blower increases.
Was. Also, depending on the opening of the air mix damper,
In the technology that regulates the output temperature, the heater is aired during maximum cooling.
Close with a mix damper and cool air only to the heating bypass passage.
Flow, the ventilation resistance in the duct increases,
As a result, there is a problem that the power consumption of the blower increases.
Was. Furthermore, in the technology disclosed in the above-mentioned publication, the face
It was provided so that inside air was mainly led to the outlet. This
The freshness that fresh outside air is guided to the upper body of the crew
Had a poor sense of operation. In recent years,
Part of the air blown out from the
To prevent fogging, especially to improve the visibility of door mirrors
Although there is a demand, the technology disclosed in
Prevents fogging of the side glass because mainly shy air is guided
Had a disadvantage that the effect of performing was low. [0004] SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances.
The purpose is to reduce the fogging of the windshield
Heating with small heating capacity and power consumption of blower
Air from the face outlet.
It is an object of the present invention to provide an air conditioner for a vehicle that can be used. [0005] SUMMARY OF THE INVENTION An air conditioner for a vehicle according to the present invention.
The equipment isAir from the center of the front of the cabin to the upper body of the occupant
Through the center face outlet, which blows air from both sides of the front of the room
Blow air toward the occupant's upper body or side glass
Side face outletSky towards windshield
The defroster outlet that blows out the air and the feet of the occupants
With a foot outlet that blows air toward
And in this ductThe center face outlet,
The side face outlet,The defroster outlet,
And air flow blown out from the foot outlet
A blower and cooling air that is arranged in the duct and passes through
A cooler to be cooled, and an empty space of the cooler in the duct.
It is located downstream of the airflow and heats the passing air.
A heater provided with a variable heating capacity,
A heating bypass which bypasses the heater in the duct
Changing the opening degree of the pass passage and the heating bypass passage
Cool damper and outdoor air introduced into the duct
Is provided so as to allow the heating after passing through the cooler.
A first layer passing through a bypass passage or the heater;
Introducing room air in the duct and the cooler
A second layer that passes through both of said heaters. Soshi
Further, the first layer includes:The center face outlet,
The side face outletAnd the defroster outlet
And the second layer communicates with the foot outlet, and
The first layer into which air can be introduced and before room air is introduced
The second layer is separated by a partition wall in the duct.
The cool damper is provided with the heating bypass passage.
The air flowing through the first layer when the path is fully opened
The bypass passage and the heater are set to flow in parallel.
Kere, In the foot mode, introduced into the first layer
Open air to the defroster outlet and the side face
While blowing out from the outlet, it was introduced into the second layer
Provided to blow inside air from the foot outlet
Adopt technical means. [0006] When the blowout temperature is adjusted, the heater is heated.
Capacity and opening of heating bypass by cool damper
By changing the degree, the partition wall in the duct
Therefore, the sky that passes through the first layer that is
Qi, and separated by a partition wall in the duct
The temperature of the air passing through the second layer into which room air is introduced is regulated.
It is set. In other words, without stirring the cold and hot air,
Because the blowing temperature can be adjusted, compared to the conventional
The ventilation resistance can be kept low. Big cooling capacity
If required (the cool damper must
When opened), the air cooled by the cooler
In addition to the passage, it passes through a heater. In other words, within the first layer
Even if the heat damper fully opens the heating bypass passage,
The air flowing in the first layer without the heater being closed by
The heat bypass passage and the heater flow in parallel. in this way,
If a large cooling capacity is required, the heater will not close
Since the entire duct can be used as an air passage,
Ventilator when large cooling capacity is required
Resistance is kept low.Center face outlet and size
Door face outletCommunicates with the first layer through which outside air can be introduced.
ToCenter face outlet and side face blow
exitThe outside air can be blown out more. Toes
AndCenter face outlet and side face outlet
ThanFresh air can be blown out to the occupant's upper body
To give the occupant a fresh feeling and improve the occupant's comfort
You. Also,Side face outletMore blown air
In order to prevent fogging of the side glass,Sidef
Yace outletOutside air with relatively low humidity on the side glass
To prevent fogging of the side glass.
high.In foot mode, inside air is blown from the foot outlet
To get outWhen performing heating operation, foot blowing
The air blown out from the exit to the occupant's feet is
Heating the air, the occupant's feet with a small heating capacity
It can blow out warmed air. At this time,
The outside air introduced into the first layer is
To blow out from the defroster outlet,Windshield
And fogging of the side glass can be prevented. [0007] The vehicle air conditioner of the present invention has the above-described structure.
As shown by the action,In foot mode,Front gear
Minimal heating capacity with less fogging of the lath and side glass
By forceStepCan be heated. Also, compared to the conventional
The ventilation resistance inside the duct is kept low,
Power consumption can be reduced. further,Futmo
Center face outlet even in operation modes other than
And side face outletTo blow out more air
Can improve occupant comfort
Along with the side glassSide face outletMore blowing
Guide the airAndPrevent side glass fogging
Thus, the visibility of the door mirror can be improved. [0008] Next, an air conditioner for a vehicle according to the present invention will be described with reference to the drawings.
A description will be given based on one embodiment shown. FIGS. 1 to 4 show a first embodiment of the present invention.
Figure 1 shows an example of the air conditioner duct.
It is a block diagram. The vehicle air conditioner 1 of the present embodiment is an example.
For example, it is installed in electric vehicles,
A duct 2 forming an air passage for sending air. This duct 2
At one end of the duct, the air flow toward the room in the duct 2
Two electric motor driven first blowers 3 and 2
The blower 4 is connected. The first blower 3 has suction suction
Equipped with inside / outside air switching means 5 for switching air between inside air and outside air
You. The inside / outside air switching means 5 is used to introduce inside air for introducing inside air.
An opening 6 and an outside air introduction port 7 for introducing outside air are provided. Soshi
The inside / outside air switching means 5 includes an inside / outside air switching damper 8,
The first blower 3 sucks the air by the inside / outside air switching damper 8.
Air can be switched between inside air and outside air. Ma
In addition, the second blower 4 always sucks only inside air,
An inside air inlet 9 for introducing inside air is provided. The other end of the duct 2 passes through the inside of the duct 2
Outlets that blow out the air
ing. This outlet is located above the occupant from the center of the front of the cabin.
Center face outlet that mainly blows cold air toward the body
10 and from both sides of the front of the cabin,
Side face that mainly blows cold air toward the id glass
Mainly blows warm air toward the outlet 11 and windshield
Mainly towards the defroster outlet 12 and the passenger's feet
And a foot outlet 13 for blowing out hot air. And
In the duct 2, other than the side face outlet 11
Controls the airflow to each outlet in the air passage leading to the outlet
Center face damper 14, defroster damper 1
6 and a foot damper 17 are provided. [0010] Upstream in the duct 2, the flow in the duct 2
A cooler 18 for cooling the cooling air is provided, and
19 that heats the air flowing in the duct 2 downstream of the
Is arranged. The cooler 18 flows in the duct 2
So that all the air passes through it
Is provided. A heater 19 is provided in the duct 2.
A heating bypass passage 21 is provided for bypassing. This heating bath
The heating bypass passage 21 is opened and closed in the Ipass passage 21.
Cooler that changes the opening of the heating bypass passage 21
A damper 22 is provided. Also, upstream of the cooler 18 in the duct 2
Represents the air blown from the first blower 3 and the air blown from the second blower 4
For separating the discharged air and passing through the cooler 18
One partition wall 23 is provided. In addition, the cold inside duct 2
The outside air guided from the first blower 3 is located downstream of the air blower 18.
The first layer 24 that can be introduced and the inside that is guided from the second blower 3
Second partition wall 26 for partitioning into second layer 25 for introducing only air
Is provided. That is, the first layer 24 is switched between inside and outside air.
Means 5 are provided so that outside air can be introduced, and
Pass through the heating bypass passage 21 or the heater 1
9 is a flow path of air that passes through the second layer 25.
The inside air is introduced from the port 9 to cool both the cooler 18 and the heater 19
Is an air passage through which the air passes. Note that the heater 19 is
2 is disposed in the duct 2 while penetrating the partition wall 26.
You. In addition, a face mode is provided downstream of the second partition wall 26.
The first layer 24 and the second layer 2
There is provided a communication port 28 for communicating with the communication device 5.
The communication port 28 is used to open and close the communication port 28.
A damper 29 is provided to blow out an operation panel 30 described later.
Face mode or
Opens the communication port 28 when the defroster mode is selected.
It is provided as follows. The cooler 18 of the present embodiment is provided with a refrigeration cycle 3
The refrigerant evaporator 2 of the present embodiment has a heater 19 of the present embodiment.
This is a refrigerant condenser for the vehicle 32. Cooling employed in this embodiment
One example of the freezing cycle 32 is shown in the refrigerant circuit diagram of FIG. Book
The refrigeration cycle 32 of the embodiment has an accumulator cycle.
The refrigerant evaporator (cooler 18), the refrigerant condenser (heater 1)
9) In addition to the above, the outdoor heat exchanger 33, the refrigerant compressor 34,
Device 35, accumulator 36, and refrigerant flow direction
And a flow path switching unit 37 for switching between the two. Outdoor heat exchanger
33 performs heat exchange between the outside air and the refrigerant outside the duct 2.
Equipped with an outdoor fan 38 and an outside air shutter 39.
I can. The refrigerant compressor 34 performs suction, compression, and discharge of the refrigerant.
Driven by an electric motor 40. This refrigerant
The compressor 34 is integrally formed with the electric motor 40 in the sealed case 4.
1. An electric motor that drives the refrigerant compressor 34
The rotation speed is controlled by the inverter 42.
Is variable, and changes in the rotation speed of the electric motor 40
Therefore, the refrigerant discharge capacity of the refrigerant compressor 34 changes. What
The vehicle air conditioner 1 of the present embodiment includes a refrigerant compressor 3
4. The discharge temperature changes due to the change in capacity due to the change in rotation speed.
The control is performed. The pressure reducing device 35 is a refrigerant evaporator
Expansion valve for decompressing and expanding the refrigerant flowing into the (cooler 18)
For example, during the dehumidifying operation, the refrigerant condenser (heater 19)
It is provided to adjust the super cool amount. Refrigerant
The flow path switching unit 37 performs a cooling operation, a heating operation, and a dehumidification operation.
The flow direction of the refrigerant is switched during operation. Specifically, the refrigerant
Set the discharge direction of the compressor 34 to the outdoor heat exchanger 33
Four-way valve 43 for switching to a heater (heater 19), heating operation
Electromagnetic opening to bypass the refrigerant evaporator (cooler 18)
The valve 44 closes the refrigerant condenser (heater 19) during the cooling operation.
The electromagnetic three-way valve 45 to be bypassed, and the flow direction of the refrigerant
It comprises a check valve 46 for regulating. The flow path switching means 37 is used for cooling operation.
Time, heating operation and dehumidifying operation as follows:
Switch the refrigerant flow. During the cooling operation, the refrigerant compressor 3
The refrigerant discharged from No. 4 is supplied to the four-way valve 43 → the outdoor heat exchanger 33 →
Bypass the refrigerant condenser (heater 19) → pressure reducing device 35 →
Refrigerant evaporator (cooler 18) → 4-way valve 43 → Accumley
Flow from the compressor 36 to the refrigerant compressor 34 (see arrow C in the figure).
See). During the heating operation, the refrigerant discharged from the refrigerant compressor 34
To the four-way valve 43 → refrigerant condenser (heater 19) → pressure reducing device
35 → bypass refrigerant evaporator (cooler 18) → outdoor heat exchange
Exchanger 33 (outdoor fan 38 ON, outside air shutter 39 open) →
Four-way valve 43 → accumulator 36 → refrigerant compressor 34
(See arrow H in the figure). During the dehumidification operation, the refrigerant compressor
The four-way valve 43 → the refrigerant condenser (heating)
19) → pressure reducing device 35 → refrigerant evaporator (cooler 18) →
Outdoor heat exchanger 33 (outdoor fan 38 OFF, outdoor air shutter
39 closed) → four-way valve 43 → accumulator 36 → refrigerant compression
It flows in the order of the machine 34 (see arrow D in the figure). The above-mentioned first blower 3, second blower 4, electric motor
Inverter 42 of motor 40, outdoor fan 38, four-way valve
43, electromagnetic on-off valve 44, electromagnetic three-way valve 45, each damper and outside
Actuator (not shown) for driving the air shutter 39
Control of the electrical components such as
Is done. The control device 47 is operated by an occupant.
Each electric signal is supplied according to an operation signal of the panel 30 (see FIG. 3).
The operation panel 30 controls the energization of parts.
Installed in a position with good operability. The operation panel 30
A blow mode switch 31 for setting a blow mode;
Air volume setting to set the air volume blown into the room from duct 2
Constant switch 48, start and stop of refrigeration cycle 32
Air conditioner switch 49, dehumidification switch
H50, temperature adjustment lever for adjusting the temperature of air blown into the passenger compartment
51 is provided. The blow mode switching switch 31 is
To discharge air in duct 2 toward the upper body
Chair mode switch 52, relatively cold to upper body of crew
Air, a by-pass that discharges relatively warm air to the occupant's feet
Level mode switch 53, relatively warm to the occupant's feet
Foot mode switch 54 for discharging paddy air, mainly
Defmo that discharges relatively warm air to the windshield
It comprises a mode switch 55. Also, the cooling / heating switch 49
Turns on and off the refrigerant compressor 34 of the refrigeration cycle 32.
The air conditioner switch 49 and face mode
When both switches 52 are operated simultaneously, the refrigeration cycle
32 performs a cooling operation, and a bi-level mode switch
53, a foot mode switch 54 and a differential mode switch
Switch 55 and air conditioning / heating switch 49
When operated at the same time, the refrigeration cycle 32 performs a heating operation.
It is provided as follows. Further, the inside and outside air switching means 5
As for the outside air switching damper 8, the face mode switch 52 is selected.
When selected, selects shyness and switches to other bi-level mode switches.
Switch 53, foot mode switch 54 and differential mode switch
When the switch 55 is selected, the outside air is selected. In addition, the real
In the example, the inside and outside air are switched according to the blowing mode.
But it is necessary to switch between inside and outside air by manual operation.
May be provided. The temperature control lever 51 is moved to a set position.
The rotation speed of the refrigerant compressor 34 is set accordingly.
For example, during the cooling operation, the temperature control lever 51 is moved to the cool side.
The rotation of the refrigerant compressor 34 becomes faster as the
The cooling capacity of the air passing through the
Things. Conversely, during the heating operation, the temperature control lever 51 is
As the refrigerant is moved to the hot side, the rotation of the refrigerant compressor 34 becomes faster.
And the heating capacity of the air passing through the heater 19 is continuously increased.
To make it higher. The temperature is adjusted during the dehumidifying operation.
As the lever 51 is moved to the hot side, the refrigerant compressor 3
4 rotates faster and heats the air passing through the heater 19
Continuously increase the capacity and adjust the heating capacity during dehumidification
You. [Operation of Embodiment] Next, the operation of the above embodiment will be described.
Will be described. (Cooling operation in face mode, see Fig. 4 (a))
From the face mode switch 52 on the operation panel 30.
Face mode is selected, and the air conditioner switch 49 is
Is turned on, the air volume setting switch 48 is turned on, and the temperature
When the knob 51 is set to the cool side, the refrigeration cycle
32 performs a cooling operation, and the inside / outside air switching damper 8
The inside air is automatically selected and the first blower 3 sucks the inside air.
At the same time, the second blower 4 also sucks inside air. 1st blower
The inside air sucked by the third and second blowers 4 is all cooled by the cooler 18.
Is cooled through. In this mode, the cool damper 22
And the communication damper 29 is opened, and the center face damper 1 is opened.
4 and the side face outlet 11 are open,
Air passing through the first layer 24 and the second layer 25 is centrifugal.
Yace outlet 10 and side face outlet 11
And is blown out to the upper body of the crew. In this mode,
Means that the heater 19 is stopped,
Blown out from outlet 10 and side face outlet 11
The air produced is cold air. And the temperature control lever 51
Changing the set position allows the refrigerant compressor 34 to rotate.
The rotation speed changes, and the blowing temperature falls within the range A1 in FIG.
It varies in the range of about 3 to 15 ° C as shown. (Dehumidifying operation in face mode, FIG. 4C)
Reference) In the operation mode described above, the dehumidification switch 50 is turned on.
Then, the refrigeration cycle 32 performs the dehumidifying operation,
The outside air switching damper 8 automatically selects outside air and
3 sucks outside air, and the second blower 4 sucks inside air.
Pull. All the outside air sucked by the first blower 3 is cooled by the cooler 18.
, And is cooled and dehumidified. Inside of the suction by the second blower 4
All air passes through the cooler 18 and is cooled and dehumidified. This model
In the mode, the cool damper 22 is closed and the communication damper 2 is closed.
9 opens, center face damper 14 and side face
Since the outlet 11 is open, the first layer 24 and the
The cold air passing through the two layers 25 passes through the heater 19
It is reheated, and the center face
The air is blown out from the air outlet 11 to the upper body of the occupant.
Changing the set position of the temperature control lever 51
As a result, the rotation speed of the refrigerant compressor 34 changes,
As shown in the range A2 of FIG.
Range. (Bilevel mode dehumidifying operation, FIG. 4
(See (d)) While the bi-level mode is selected,
When the dehumidification switch 50 is turned on, the refrigeration cycle 32 is removed.
While performing wet operation, the inside / outside air switching damper 8 automatically
When the outside air is selected and the first blower 3 sucks the outside air,
Then, the second blower 4 sucks the inside air. Suction of the first blower 3
The drawn outside air and the inside air drawn by the second blower 4 are all cold.
It is cooled and dehumidified through the heat exchanger 18. In this mode, the
The damper 22 and the communication damper 29 are closed.
Face damper 14, side face outlet 11,
Since the damper 17 is open, the first layer 24 and
All the cold air passing through the second layer 25 passes through the heater 19.
Is reheated. Therefore, the first layer 24 was dehumidified.
The mixed air of outside air and inside air is supplied to the center face outlet 10
And from the side face outlet 11 to the occupant's upper body
Be blown out. The inside air dehumidified by the second layer 25 is
It is blown out from the foot outlet 13 to the feet of the occupant. Soshi
To change the set position of the temperature control lever 51.
As a result, the rotation speed of the refrigerant compressor 34 changes,
Blowing of the air outlet 10 and the side face outlet 11
As shown in the range B1 of FIG.
0 ° C, and the outlet temperature of the foot outlet 13
As shown in box B2, the temperature varies in the range of about 30 to 45 ° C.
In this embodiment, the first layer 24 and the second layer
The division ratio to 25 is approximately 1: 2.
Inside air suction temperature and directly above the refrigerant evaporator (cooler 18)
Since the difference from the subsequent temperature is about 20 °, the cool damper
The upper and lower temperature difference can be about 15 ° when closing 22
You. Note that, in the present embodiment, the cool-down
Although the example in which the damper 22 is closed is shown, the cool damper 22 is closed.
Open or adjust the opening to adjust the blowing temperature to your feet
A large difference in the blowing temperature to the half body may be provided. (Heating operation in bi-level mode)
Mode is selected and the dehumidification switch 50 is turned off.
In the state of dehumidification operation in the bi-level mode,
The refrigeration cycle 32 performs a heating operation, and the cooler 18
Only the operation of stops. As a result, the center face
From the mouth 10 and the side face outlet 11, above the occupant
Air blown to the body (mixed air of outside air and inside air),
And the inside air blown out from the foot outlet 13 is heated.
It becomes warm air that passed through the vessel 19. The center face
Blows from the air outlet 10 and the side face outlet 11
The air emitted is a mixture of outside air and inside air,
Since the air blown out from the outlet 13 is inside air,
The outlet temperature to the source is higher than the outlet temperature to the upper body.
You. (Foot mode dehumidifying operation, see FIG. 4 (f))
See) Foot mode is selected and dehumidification switch
When 50 is turned on, the refrigeration cycle 32 performs a dehumidification operation.
At the same time, the inside / outside air switching damper 8 automatically selects the outside air
The first blower 3 sucks outside air, and the second blower 4 also draws inside air.
Suction. The outside air sucked by the first blower 3 and the second blower
All the inside air sucked by the blower 4 passes through the cooler 18 to be cooled and removed.
Wet. In this mode, the cool damper 22 and the
The communication damper 29 is closed, and the side face outlet 11
The defroster damper 16 and the foot damper 17 are opened.
Therefore, it passes through the cooler 18 and is guided to the first layer 24.
All of the blown air (outside air and inside air) is re-
Heated, side face outlet 11 and defroster
From the air outlet 12, a windshield and side guards of the vehicle are provided.
Lass, or blown out towards the upper body of some occupants
You. Further, it was led to the second layer 25 through the cooler 18.
The inside air is also reheated through the heater 19 and the foot outlet
It is blown out to the feet of the occupant from 13. And temperature control
By changing the setting position of the lever 51, the refrigerant pressure is changed.
The rotation speed of the compressor 34 changes, and the side face
11 and the outlet temperature of the defroster outlet 12 are shown in FIG.
(G) As shown in the ranges C1 and C2,
Range, and the outlet temperature of the foot outlet 13 falls within the range C3.
As shown in FIG. (Heating operation in foot mode) Foot mode
Is selected and the dehumidification switch 50 is turned off,
In the above dehumidifying operation in the foot mode,
The cycle 32 performs the heating operation, and only the operation of the cooler 18 is performed.
Stop. As a result, the side face outlet 11 and
From the defroster outlet 12, windshield, side
Air blown to the upper body of the crew and the crew (outside air and inside
(Mixed air) is warm air that has passed through the heater 19.
You. In this case, the side face outlet 11 and the defroster
The wind blown out of the outlet 12 is the foot outlet 13
The air that is blown out is rich in outside air
Possible windshield and side glass fogging
Is extremely low. It is blown out from the foot outlet 13
The inside air is also heated by the heater 19 and becomes hot air. (Dehumidifying operation in differential mode, see FIG. 4 (h)
Ref) The differential mode is selected and the dehumidification switch 5
When 0 is turned on, the refrigeration cycle 32 performs a dehumidifying operation.
In both cases, the inside / outside air switching damper 8 automatically selects the outside air
The first blower 3 sucks outside air, and the second blower 4 also sucks inside air.
Pull. Outside air sucked by the first blower 3 and the second blower
All the inside air sucked in 4 passes through the cooler 18 to be cooled and dehumidified.
It is. In this mode, the cool damper 22 is closed,
The communication damper 29 is opened, and the defroster damper 16 is opened.
The air (the outside air and the inside)
G) are all reheated through the heater 19 and
From the chair outlet 11 and the defroster outlet 12, the vehicle
Windshield, side glass, or some passengers
It is blown out toward the upper body. In addition, it is led to the second layer 25.
The drawn inside air is also reheated through the heater 19. This re
The heated inside air of the second layer 25 closes the foot damper 17.
And the communication damper 29 is open, the communication port 2
8, the side face outlet 11 and the defroster
From the air outlet 12, windshield and side glass of the vehicle
And is blown out toward the upper body of some occupants.
Then, the setting position of the temperature control lever 51 is changed.
As a result, the rotation speed of the refrigerant compressor 34 changes,
Blowout of the air outlet 11 and the defroster outlet 12
As shown in the ranges D1 and D2 in FIG.
It varies in the range of 0 to 50 ° C. (Diff Mode Heating Operation)
Is selected and the dehumidification switch 50 is turned off,
Refrigeration cycle
32 performs the heating operation, and only the operation of the cooler 18 stops.
You. As a result, the side face outlet 11 and the defroster
From the star outlet 12, windshield, side glass,
And air blown out to the upper body of the crew (outside air and inside air)
Is warm air that has passed through the heater 19. Next, in the heating operation in the foot mode,
To prevent fogging of window glass,
Heated comparison technology, ratio of heating by mixing outside and inside air
This will be described with reference to FIGS. 5 to 7 in comparison with the comparison technique.
First, heating operation by 100% of outside air in the foot mode
The test results were obtained by turning the air and heating operation in which the outside air and the inside air were mixed.
The results are shown below. The outside air temperature is 0 ° C. and the outside air humidity is 90
Refrigerant evaporator for refrigeration cycle 32, up to 95%, 5 passengers
The refrigerant condenser (the heater 1) bypasses the (cooler 18).
According to 9), the heating operation is performed with the indoor average at 25 ° C. In the condition of 100% of the outside air,
160m outflow^Three/ H (1 at 48 ° C from the foot outlet)
00m^Three/ H, 40 at 38 ° C from the side face outlet
m^Three/ H, 20m at 40 ° C from the defroster outlet^Three/
h), the window glass (front glass) as shown in FIG.
56, front side glass 57, rear side glass
No fogging occurs on the lath 58 and the rear glass 59). What
The percentage in the figure is the relative humidity near each window glass. I
On the contrary, it is necessary to raise the low temperature outside air,
Heating with 100% outside air has a large heating load
It was equipped. Mixing outside and inside air for vehicle air conditioning
The air volume of the device 1 is 160 m^Three/ H (from foot outlet)
100m at 48 ° C^Three/ H, 2 from side face outlet
40m at 7 ° C^Three/ H, 2 at 36 ° C from the defroster outlet
0m^Three/ H) at 90m^Three/ H
As shown in FIG.
Almost the entire front glass 56 and the rear side glass 5
8 will be clouded. In this way,
Mix both inside air and introduce into duct 2 for heating operation
To reduce the heating load to 60% or less compared to 100% of outside air
Although it can be reduced, there is a problem that fog
I was Next, the outside air is supplied to the window glass and the upper body of the occupant.
Air to the foot, air inside to the feet, air conditioning equipment for vehicles
The air flow volume of the installation 1 is 190m^Three/ H (from foot outlet)
120m at 51 ° C^Three/ H, from the side face outlet
45m at 31 ° C^Three/ H, open air from defroster outlet
25m at 34 ° C^Three/ H), near the windshield 56
As shown in FIG. 7, the humidity of
Can be improved to a new level. As a result, the rear side
Only slight fogging occurs at the rear of
The occurrence of cloudiness can be suppressed. In addition, refrigerant evaporation
Even when it is not the dehumidifying operation that activates the cooler (cooler 18),
The occurrence of fogging is kept to a minimum and
Or moisture was removed by the user's feeling
When the dehumidification operation is performed, air dehumidified from each outlet
To quickly dehumidify. [Effects of the embodiment] When adjusting the blowing temperature
Operates the temperature control lever 51 to turn the refrigerant compressor 34 on.
By controlling the rotation speed, the cooling capacity of the cooler 18 and the heater 19
Change the heating capacity of the
Opening and closing the heating damper 22 to open the heating bypass passage 21
The air passing through the first layer 24 and the second layer 2
5. Adjust the temperature of the air passing through 5. In other words, cold wind and warm
Because the blowing temperature can be adjusted without stirring the wind,
To keep the ventilation resistance in the duct 2 lower than in the past
Can be. As a result, the first blower 3 and the second blower 4
Power consumption can be reduced. Big cold
When chamber capacity is required, air cooled by cooler 18
Passes through the heater 19 in addition to the heating bypass passage 21.
You. In other words, the entire inside of the duct 2 is used as an air passage for cooling air.
can do. For this reason, a large cooling
Ventilation resistance when chamber capacity is required is kept low,
As a result, the power consumption of the first blower 3 and the second blower 4
Power can be kept low. The side face outlet 11 is a face model.
Except during cooling operation of the air conditioner, communication with the first layer 24 to which outside air is introduced
Other than during face-mode cooling operation.
Air can be blown out from the door face outlet 11
It works. During face mode cooling operation, the indoor
The side glass does not fog when wet, but other modes
Then, the air rich in outside air flows into the side face
It is blown out from the side face outlet 11
Air to prevent fogging of the side glass
The relative humidity of the side glass from the door face outlet 11
Low outside air is guided to prevent fogging of side glass
And the visibility of the door mirror is excellent. Side face
Like the outlet 11, the center face outlet 10 is also the first layer 2.
4, the center face outlet 10 and
From the side face outlet 11, fresh to the occupant's upper body
It is possible to blow out fresh air, giving the crew a fresh feeling
In addition, the comfort of the occupant can be improved. During the heating operation in the foot mode, the air blows to the feet.
The warm air that is drawn in draws warm inside air and heats it.
Chamber load is reduced to 60% or less compared to 100% of outside air
be able to. As a result, the vehicle air conditioner of this embodiment
1 is suitable for electric vehicles that generate almost no excess heat
ing. At this time, the defroster outlet to the windshield
Since the outside air with a relatively lower humidity than that of 12 is introduced,
The fogging of the glass is prevented. Also, during cooling operation
Even part or all of the indoor air cooled
For cooling, the cooling load is also lower than 100%
Can be reduced. [Second Embodiment] FIGS. 8 and 9 show a second embodiment.
FIG. 8 shows an example of the duct of the air conditioner 1 for a vehicle.
2, and FIG. 9 is a schematic perspective view thereof. This implementation
The example vehicle air conditioner 1 includes a first blower 3 and a second blower.
The motor 60 of the machine 4 is shared. [Third Embodiment] FIG. 10 shows a third embodiment.
FIG. 2 is a schematic configuration diagram of a duct 2 of the air conditioner 1 for a vehicle.
The vehicle air conditioner 1 according to the present embodiment includes a first blower 3 and a second blower.
2 The motor 60 and the fan 61 of the blower 4 are shared.
It is. Fourth Embodiment FIGS. 11 to 14 show a fourth embodiment.
FIG. 11 shows an embodiment, and FIG.
FIG. 2 is a schematic configuration diagram of a duct 2. Vehicle air conditioner of the present embodiment
In the sum device 1, the first layer 24 is provided below the second layer 25.
It is something. Of the duct 2 partitioned by the first partition wall 23
Upstream is the inside air rich passage 62 above the first partition wall 23.
It is divided into a lower outside air rich passage 63 and the inside air rich passage 6.
2 is mainly led to the inside air, and the outside air rich passage 63 is mainly led to
Outside air is led. In the present embodiment, one blower 64
Therefore, the inside air is mainly guided to the inside air rich passage 62, and the outside air
The outside air or the inside air is mainly selected and guided to the first passage 63. this
As shown in FIG. 12, the blower 64 has an air suction port.
The lower half is the inside air inlet port 65 for sucking inside air, and the upper half
Inside and outside air that sucks the air selected by the inside and outside air switching means 5
The selection introduction port 66 is provided. And the screen of the blower 64
The guide shown in FIG. 13 and FIG.
68 is disposed, and the air sucked from the inside air introduction port 65 is provided.
Mainly to the outside of the guide 68 to the inside air rich passage 62.
Blow out. In addition, air was sucked from the inside / outside air selection inlet 66.
The air is led mainly to the inside of the guide 68, and the outside air rich passage 6
Blow out to 3. The guide 68 is about half of the upstream side.
V-shape that reduces noise and improves the separation between inside and outside air
The notch 69 is provided in a different shape.
You may ask. [Fifth Embodiment] FIGS. 15 to 17 show a fifth embodiment.
FIG. 15 shows an embodiment, and FIG.
Sectional view of the drain pan for receiving drain water scattered from the generator
It is. As shown in the first to fourth embodiments, the cooler 1
8 is located upstream of the heater 19 and the cooler 18
The air passing through the partition wall (the second partition wall 2 in the above embodiment)
6 upstream part of the heater) and separate the divided air.
Each is passed through a heater 19, and further cooled and cooled.
In a structure in which the distance from the cooler 19 is short, the cooler 18
The drain water condensed in the cooler 18 (the refrigerant evaporator chip)
Flow through the duct 2
Could be scattered by the flow of
is there. When drain water is applied to the heater 19, the drain water
Can evaporate and blow out into the cabin, fogging the window glass.
There is a potential. Note that the specifications between the cooler 18 and the heater 19
If you only incline the cut wall (second partition wall 26),
When falling from the wall to the drain pan 70 below the duct 2,
It is blown by the flow of air below the cut wall and
It will take. Therefore, in this embodiment, the cooler 18 and the heating
Partition (the upstream of the heater of the second partition 26)
Part) is scattered from the cooler 18 above the partition wall.
Collected drain water, and the scattered drain water is supplied to the heater 19.
This is provided as a drain pan 71 to prevent such a situation.
You. The specific structure of the drain pan 71 is shown in FIG.
As shown in FIG.
From the downstream end (downstream to the air flow) of the heater 19
Is located up to the upstream end (upstream to the air flow)
You. At the approximate center of the drain pan 71, drain water
A drain hole 72 for discharging is provided.
It is provided to be inclined toward the len hole 72. Drain
In the lower part of the hole 72, drain water is supplied to the drain pan 70 of the duct 2.
Drain pipe 73 is provided integrally with the drain pan 71
Have been. The drain pan 70 provided in the duct 2 is
In addition to the drain water attached to the air cooler 18, the outside air inlet 7 (the
Rainwater or car wash water that has entered duct 2
It is provided for receiving and draining water.
The water received by the drain pan 70 is
There is provided a drain passage 74 for discharging to the drain. This drain
The duct 70 has a shape that is suddenly depressed downward in the duct 2.
And the wind speed in the drain pan 70 is made very small. Soshi
The lower end of the drain drain pipe 73 is substantially free of the drain pan 70.
Drain drain pipe provided to open to the windy part
When the drain water falls from 73 to the drain pan 70,
Drain water is provided so as not to scatter to the heater 19.
ing. Next, the assembly structure of the drain pan 71 will be described.
You. The duct 2 accommodating the cooler 18 of the present embodiment is
(Not shown) and the lower case 75 are joined.
With the upper case provided at the upper end of the lower case 75.
Connect both sides of the drain pan 71 to the joining ribs (not shown)
Adopts a structure fixed with book tapping screws
(See FIG. 17). The operation of the fifth embodiment will be described. Dehumidifying operation
When performed, the operation of the cooler 18 causes the cooler 18 to operate.
The passing air is cooled. When the air is cooled, the air
Some of the water vapor in the system is dripped and drain water is supplied to the cooler 18.
And adhere. And the drain water adhering to the cooler 18
Flows downward through the cooler 18. Also cooler
A part of the drain water adhering to the
Downstream by the airflow flowing through the duct 2 before falling
To the side (heater 19 side). Through the cooler 18
The drain water flowing to the lower end of the cooler 18 is
It is received by the drain pan 70 provided in the section. On the other hand,
Air flowing through the duct 2 above the receiving tray 71
Before flowing down to the lower end of the cooler 18
The scattered drain water is supplied to a drain receiver provided up to the heater 19.
It is received by the plate 71 and does not cover the heater 19. Soshi
The drain water received by the drain pan 71
To the drain pan 70 through the drain hole 72 and the drain drain pipe 73.
I will be. Further, a duct is provided below the drain pan 71.
2 flows down to the lower end of the cooler 18 due to the air flow
Drain water scattered to the downstream side before falling
It is received and does not cover the heater 19. And drainage
The drain water received by the pan 70 passes through the drain passage 74.
Is discharged to the outside of the vehicle. On the other hand, the heater 19 is a heater
Heat the air passing through 19 and re-air the air blown into the room.
Heat. Then, the drain water is applied to the heater 19.
Therefore, it is possible to prevent the drain water from re-evaporating in the heater 19.
Therefore, the dehumidifying effect of the cooler 18 is not impaired. The effect of the fifth embodiment will be described. Of this embodiment
By using the drain pan 71, it is possible to attach
The drain water that has arrived is received by the drain pan 71,
Water is prevented from splashing on the heater 19. For this reason,
The water is re-evaporated by the heater 19, and the window glass becomes cloudy.
Can be prevented. [Sixth Embodiment] FIG. 18 shows a sixth embodiment.
A drain pan 71 for receiving the drain water of the cooler 18
FIG. Drain discharge of the drain pan 71 of this embodiment
The water pipe 73 is provided integrally with the drain pan 70 of the lower case 75.
Of the drain pan 71
Drain water received from the drain pipe 76 directly out of the duct 2
To the department. This allows the drain pan 71
The received drain water is affected by the air flowing through the duct 2.
It is discharged to the outside without being removed. [Modification] In this embodiment, the air conditioner is powered.
An example was shown in which the vehicle was mounted on a diesel-powered vehicle.
Driven by diesel or lean burn engines
It may be mounted on a car. Refrigerant as an example of a heater
The condenser is shown as an example, but the hot water heater core and electric heater
Another heater such as a heater or a combustion heater may be used. Second send
By installing inside / outside air switching means upstream of the fan,
It may be provided so that outside air can be introduced at the feet of the members. Ma
In addition, the inside and outside air switching means is eliminated, and outside air is always guided to the first layer.
It may be provided as follows.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic configuration diagram of a duct of an air conditioner (first embodiment). FIG. 2 is a refrigerant circuit diagram of a refrigeration cycle. FIG. 3 is a front view of an operation panel. FIG. 4 is an operation explanatory diagram of the air conditioner. FIG. 5 is an explanatory diagram of a fogging state of a window during a heating operation with 100% of outside air. FIG. 6 is an explanatory diagram of a fogged state of a window during a heating operation in which outside air and inside air are mixed. FIG. 7 is an explanatory diagram of a fogged state of a window during a heating operation in which outside air is blown out to a window glass and inside air is blown out to a foot; FIG. 8 is a schematic configuration diagram of a duct of the air conditioner (second embodiment). FIG. 9 is a schematic perspective view showing a state where a duct is mounted on a vehicle (second embodiment). FIG. 10 is a schematic configuration diagram of a duct of the air conditioner (third embodiment). FIG. 11 is a schematic configuration diagram of a duct of an air conditioner (fourth embodiment). FIG. 12 is a sectional view of a blower (fourth embodiment). FIG. 13 is a top view of a guide (fourth embodiment). FIG. 14 is a side view of a guide (fourth embodiment). FIG. 15 is a schematic sectional view illustrating an arrangement state of a drain tray (fifth embodiment). FIG. 16 is a perspective view of a drain tray (fifth embodiment). FIG. 17 is a schematic sectional view illustrating an assembled state of a drain tray (fifth embodiment). FIG. 18 is a schematic sectional view illustrating an arrangement state of a drain tray (sixth embodiment). DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 2 Duct 3 First blower 4 Second blower 10 Center face outlet 11 Side face outlet 12 Defroster outlet 13 Foot outlet 18 Cooler 19 Heater 21 Heating bypass passage 22 Cool damper 23 First partition 24 First layer 25 Second layer 26 Second partition

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Sugi Hikari 1-1-1, Showa-cho, Kariya-shi, Aichi Japan Inside Denso Co., Ltd. (56) References JP-A-60-8105 (JP, A) JP-A-63- 188514 (JP, a) JitsuHiraku flat 4-96513 (JP, U) JitsuHiraku flat 4-83811 (JP, U) (58 ) investigated the field (Int.Cl. ^7, DB name) B60H 1/00 - 3 / 06

Claims (1)

(57) [Claims] [Claim 1] From the center of the front of the room to the upper body of the occupant
Center face outlet for blowing air, both sides of the front of the room
More air to the occupant's upper body or side glass
Side face air outlet for blowing, defroster air outlet to blow out air toward the windshield, and a duct having a foot air outlet toward the feet of the passenger and then blowing the air, the center face air outlet in the duct, said support
A blower for generating an airflow blown out from the id face outlet, the defroster outlet, and the foot outlet; a cooler arranged in the duct to cool passing air; and a cooler in the duct. A heater arranged downstream of the air flow and heating the air passing therethrough and having a heating capability variably provided; a heating bypass passage for bypassing the heater in the duct; and a heating bypass passage. A cool damper that changes the opening degree of the air conditioner, and is provided so that outdoor air can be introduced into the duct,
After passing through the cooler, a first layer through which the heating bypass passage or the heater passes, and a second layer through which indoor air is introduced into the duct to pass through both the cooler and the heater. Wherein the first layer has the center face outlet and the side
The second layer communicates with the face air outlet and the defroster air outlet, the second layer communicates with the foot air outlet, and the first layer into which outdoor air can be introduced and the second layer into which indoor air is introduced, are provided inside the duct. When the cool damper fully opens the heating bypass passage, the air flowing through the first layer is provided so as to flow through the heating bypass passage and the heater in parallel, and in a foot mode, Before the outside air introduced into the first layer
The defroster outlet and the side face outlet
And blows the inside air introduced into the second layer.
An air conditioner for a vehicle, which is provided so as to blow out from the foot outlet .