JPH04292216A - Air conditioning device for vehicle - Google Patents

Abstract

PURPOSE:To supply the blowing air at different temperature from multiple blowing ports even under the condition that a heater core, namely, a heat source is not used. CONSTITUTION:A fan 25 for sucking the air, which passes through an evaporator 9, from one surface 26 side and the other surface 27 side, which cross a right angles with to a rotation shaft 24, and for blowing to the direction along both the surfaces 26, 27 is provided, and a leading port 46 for sucking the air, which does not pass through the evaporator 9, from the one surface 26 side is provided. A partitioning wall extended along both the surfaces 26, 27 and for partitioning wind blowing passages 32, 33 of the fan 25 into the one surface 26 side and the other surface 27 side is provided, and each wind blowing passage 32, 33 partitioned by that partitioning wall is communicated with blowing ports 39, 43, 45 which open in a car room. With rotation of the fan 25, the cold air at different temperature is supplied from the blowing port 39 of the one air blowing passage 32 side and the blowing ports 43, 45 of the other air blowing passage 33 side into the car room.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner that supplies cool air at different temperatures from a plurality of outlets.

0002

[Prior Art] As a conventional vehicle air conditioner, the one shown in FIG.
(see publication). That is, the air conditioner 1 is configured by sequentially connecting a blower unit 2, a cooling unit 3, and a heater unit 4. The blower unit 2 includes:
Inside air inlet 5, outside air inlet 6, and both inlets 5, 6
An intake door 7 that opens and closes the intake door 7 is provided, and a blower fan 8 is also provided.

[0003] In the cooling unit 3, an evaporator 9 provided in a refrigeration cycle (not shown) is disposed, and in the heater unit 4, a heater core 10 whose heat source is engine cooling water (hot water) is disposed. An air mix door 11 that changes the amount of air passing through the heater core 10 according to the opening degree, and an air mix chamber 19 located downstream of the heater core 10 are provided. A plurality of ducts 12 and 13 are communicated with the heater unit 4, and a first
A switching door 17 is pivotally supported. Also, one duct 1
A first air outlet 14 is provided at one end of the duct 13, and a second air outlet 15 and a third air outlet 16 are provided at the other end of the duct 13.
The second air outlet 15 and the third air outlet 16 are selectively opened and closed by a second switching door 18.

In this structure, when the blower fan 8 operates, the inside air sucked from the inside air inlet 5 or the outside air sucked from the outside air inlet 6 passes through the evaporator 9 depending on the opening/closing position of the intake door 7. This generates cold air. A portion of the cold air reaches the heater core 10 depending on the opening degree of the air mix door 11.
The heated air passes through the air, is heated, and reaches the downstream side of the heater core 10 as warm air. The warm air is mixed with the cold air that has bypassed the heater core 10 in the air mix chamber 19 to become conditioned air at an appropriate temperature, and the air is then mixed with the cold air that has bypassed the heater core 10 to form conditioned air at an appropriate temperature. 15
, 16 into the vehicle interior.

[0005] At this time, for example, the first air outlet 14 and the third
When the air outlet 16 is in the open state, low-temperature conditioned air with a high mixing ratio of cold air that has bypassed the heater core 10 is blown out from the first air outlet 14, and the third air outlet 16 is in an open state.
From the heater core 10, high-temperature conditioned air with a high mixing ratio of warm air that has passed through the heater core 10 is blown out. Therefore, heater core 1
0, depending on the opening degree of the air mix door 11, the hot water is supplied from the first outlet 14 and the third outlet 16, or from the first outlet 14 and the second outlet. It is also possible to blow out conditioned air at different temperatures from the outlet 15.

[0006]

[Problems to be Solved by the Invention] As described above, in the conventional vehicle air conditioner, the evaporator 9 It has a structure in which a heater core 10 and the like are arranged. Therefore, when the heater core 10 is used as described above, hot water is supplied to the heater core 10, and the air mix door 11 is set to an appropriate opening degree, for example, from the first outlet 14 and the second outlet 15. , it becomes possible to obtain blown air with different temperatures.

However, when the heater core 10 is not used, the air cooled by the evaporator 9 is
The air is blown out into the vehicle interior from any of the open air outlets 14, 15, and 16 at the same temperature without being mixed with warm air. Therefore, when cooling the vehicle without using the heater core 10, it is not possible to supply air at different temperatures from the plurality of air outlets 14, 15, and 16 into the vehicle interior to provide cooling that corresponds to the temperature distribution within the vehicle interior. There wasn't.

[0008] The present invention has been made in view of such conventional problems, and it is possible to supply air at different temperatures from a plurality of air outlets into the vehicle interior even when the heater core, that is, the heat source is not in use. The object of the present invention is to provide a vehicle air conditioner that makes it possible to

[0009]

[Means for Solving the Problems] In order to solve the above-mentioned problems, in the present invention, the air that has passed through the evaporator is sucked from one side and the other side perpendicular to the rotation axis, and the air is sucked along both sides. A fan is provided that blows air in one direction, and an inlet is provided that sucks air that does not pass through the evaporator from the one side. A partition wall is provided to partition the vehicle into a front side, and each air blowing path partitioned by the partition wall communicates with an air outlet opening into the vehicle interior.

0010

[Operation] In the above structure, when the fan rotates, the air that has passed through the evaporator, that is, cold air, is sucked in from one side and the other side of the fan, and is blown in a direction along both sides. The blown cool air is then blown into the vehicle interior through a ventilation path defined by the partition wall and an outlet communicating with the ventilation path. At this time, as the fan rotates, air that does not pass through the evaporator is sucked from the inlet from the one side, so that on the one side, the air that has passed through the evaporator and the air that does not pass through the evaporator are separated. The air is sucked and blown through one of the partitioned air passages.

[0011] Therefore, in the ventilation paths divided by the partition walls, the air that has passed through the evaporator and the air that has not passed through the evaporator are mixed in one of the ventilation paths, and the air that has not passed through the evaporator is blown into the other ventilation path. In this case, only the air that has passed through the evaporator is blown. Therefore, in each air outlet, air having a higher temperature than the air blown from the air outlet communicated with the other air blowing path is fed into the vehicle interior from the air outlet communicating with the one air blowing path.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. That is, as shown in Figures 1 and 2,
A blower casing 20 is provided at the upstream end of the air conditioner 50 according to this embodiment, an upstream opening 21 is provided at the upstream end of the blower casing 20, and a downstream opening 34 is provided at the downstream end. It is being The upstream opening 21 is capable of selectively introducing inside air and outside air depending on the rotational position of an intake door (not shown), and is also provided with an evaporator 9 located within the refrigeration cycle. It is set up.

A blower motor 23 is disposed on the downstream side.
A sirocco fan 25 is fixed to the rotary shaft 24 of the blower motor 23, and the sirocco fan 25 sucks air from one side 26 and the other side 27 perpendicular to the rotary shaft 24. 26 and 27, that is, a direction perpendicular to the rotating shaft 24.

[0014] The blower casing 20 also has a hole located near the blower motor 23 and opening into the vehicle interior.
An inlet 46 is provided to draw in the inside air that does not pass through the evaporator 9 from the one surface 26 side, and an inside air door 28 that rotates from a fully closed position C to a fully open position O is pivotally supported on the inlet 46. ing.

At the center of the sirocco fan 25, a sirocco fan 25 is provided which extends along each of the surfaces 26 and 27.
A movable partition wall 30 is attached perpendicularly to each of the blades 29 . As a result, inside the blower casing 20, on the downstream side of the evaporator 9, the movable partition wall 30 and the fixed partition wall 31 are used as partitions, and a first air blowing path 32 on the one side surface 26 side and a second blowing path 32 on the other side surface 27 side are partitioned. It is divided into a ventilation path 33.

On the other hand, the downstream opening 34 is provided with a first main duct 35 communicating with the first ventilation path 32 and a second main duct 36 communicating with the second ventilation path 33. . Both ducts 35 and 36 are integrally molded, and their upstream ends communicate with each other via a communication port 37.
A ventilation door 38 is pivotally supported.

At the downstream end of the first main duct 35,
A first vent outlet 39 is provided in the center of an instrument panel arranged in the vehicle interior, and a heater core 10 is provided in the middle of the second main duct 36.
and an air mix door 11 that is rotatable from a fully open position O to a fully closed position C. Further, a first branch duct 40 and a second branch duct 40 are provided at the downstream end of the second main duct 36.
A branch duct 41 is provided, and the first
A mode rotatable between a vent mode position V in which the branch duct 40 is opened and the second branch duct 41 is closed, and a foot mode position F in which the first branch duct 40 is closed and the second branch duct 41 is released. A door 42 is provided.

A second vent outlet 43 is provided at the downstream end of the first branch duct 40. They are provided on both sides of the ment panel. Each second vent outlet 43 is provided with a shut door 44 that can rotate from a fully open position O to a fully closed position C.
A foot outlet 45 that opens into the vehicle interior is provided at the downstream end of the second branch duct 41.

In this embodiment with the above configuration, (
I) Set the inside air door 28 to the fully open position O, the ventilation door 38 to the fully closed position C, the air mix door 11 to the fully closed position C, the mode door 42 to the vent mode position V, and the shut door 44 to the fully open position O. In this state, when only the evaporator 9 is operated and the blower motor 23 is operated without using the heater core 10, the sirocco fan 25 rotates. As a result, the air that has passed through the evaporator 9, that is, the cold air, is sucked from the one side 26 and the other side 27 of the sirocco fan 25, and is blown in the direction along these both sides 26, 27. The blown cold air is then transferred to the first and second air passages 32, 33 separated by the partition walls 30, 31, and the first and second main ducts connected to the air passages 32, 33. 35, 36 and the first branch duct 40, the air is blown into the vehicle interior from the first vent outlet 39 and the second vent outlet 43, respectively.

At this time, as the sirocco fan 25 rotates, internal air that does not pass through the evaporator 9 is sucked in from the one surface 26 side through the inlet 46, so that air that does not pass through the evaporator 9 on the one surface 26 side is drawn in from the inlet 46. The cold air and internal air that is higher in temperature than the cold air and does not pass through the evaporator 9 are sucked and blown into the first air blowing path 32 . Therefore, in the first and second ventilation paths 32 and 33 divided by the partition walls 30 and 31, the cold air that has passed through the evaporator 9 and the internal air that has not passed through the evaporator 9 are mixed in the first ventilation path 32. In the second ventilation path 33, only the cool air that has passed through the evaporator 9 is blown.

[0021] Therefore, the first and second vent outlets 39, 4
3, air having a higher temperature than the air blown from the second vent outlet 43 that communicates with the second air flow path 33 enters the vehicle interior from the first vent outlet 39 that communicates with the first air flow path 32. be sent. Therefore, during cooling when the heater core 10 is not used, the first vent outlet 39 and the second
Blow air at different temperatures can be supplied into the vehicle interior from the vent outlet 43.

At this time, the first vent outlet 39 is
The second vent outlet 43 is provided at the center of the instrument panel, and the second vent outlet 43 is provided at the side of the instrument panel corresponding to each passenger. Therefore, low-temperature air is supplied from the second vent outlet 43 to the side of each passenger whose temperature is high due to the radiant heat of the side windows, and the first vent outlet 39 is supplied to the central part of the passenger compartment where the influence of the radiant heat is less. This makes it possible to provide cooling that corresponds to the temperature distribution within the vehicle interior, such as by supplying low-temperature air with a slightly higher temperature.

Moreover, since each second vent outlet 43 is provided with a shut door 44, each passenger can open and close the shut door 44 to obtain cold air or block the cold air as desired. It is also possible to do so.

(II) The inside air door 28 is placed in the fully closed position C, and the ventilation door 38 is placed in the fully closed position C.
is in the fully closed position C, the air mix door 11 is in the fully closed position C, the mode door 42 is in the vent mode position V, and the shut door 44 is in the fully closed position C.
are set to the fully open position O, respectively, and the heater core 10
If you operate only the evaporator 9 and rotate the sirocco fan 25 without using the evaporator 9,
The air that has passed through the sirocco fan 25, that is, the cold air, is sucked from one side 26 and the other side 27 of the sirocco fan 25.
Air is blown in the direction along 27. Then, this blown cold air passes through both the first and second ventilation paths 32, 33,
The first
The air is blown into the vehicle interior from the vent outlet 39 and the second vent outlet 43, respectively.

On the other hand, since the inlet 46 is closed by the inside air door 28, even if the sirocco fan 25 rotates, the inside air that does not pass through the evaporator 9 will not be sucked in from the one side 26 side. Therefore, only the cold air that has passed through the evaporator 9 is blown into the first air passage 32 and the second air passage 33, and the low temperature air that has passed through the evaporator 9 is blown from the first and second vent outlets 39 and 43. cold air is blown into the cabin.

At this time, the cold air that has passed through the evaporator 9 can be fed through both the first and second main ducts 35 and 36, so that ventilation resistance is reduced, and in this vehicle air conditioner, Maximum cooling power and maximum air volume can be obtained at the same time.

(III) The inside air door 28 is placed in the fully open position O or the fully closed position C, the ventilation door 38 is placed in the fully closed position C, and the air mix door 1 is placed in the fully closed position C.
1 to an arbitrary opening position, the mode door 42 to the foot mode position F, and the shut door 44 to the fully closed position C, using the heater core 10 and operating or not operating the evaporator 9, sirocco fan 2
5 is rotated, higher temperature air is blown out from the foot outlet 45 than the first vent outlet 39 according to the opening degree of the air mix door 11. As a result, it is possible to form a bilevel state, and even if the opening degree of the air mix door 11 is changed at this time to adjust the temperature from the foot outlet 45, the air from the first vent outlet 39 remains unchanged. The temperature never changes. Therefore, it is possible to arbitrarily change only the temperature of the air outlet from the foot outlet 45 without changing the temperature of the air outlet from the first vent outlet 39.

(IV) The inside air door 28 is placed in the fully closed position C, and the ventilation door 38 is placed in the fully closed position C.
with the air mix door 11 set at an arbitrary opening position, the mode door 42 set at the vent mode position V or foot mode position F, and the shut door 44 set at the fully open position O or fully closed position C. When the heater core 10 is used and the blower motor 23 is operated with or without operating the evaporator 9, the structure is similar to the reheat air mix system similar to the vehicle air conditioner described above. Therefore, in this state, the evaporator 9
By using only the heater core 10 without activating the heater core 10 and setting the air mix door 11 to the fully open position O, it is also possible to perform heating with maximum heater performance.

[0029]

[Effects of the Invention] As explained above, the present invention allows air that has passed through the evaporator and air that has not passed through the evaporator that has been sucked through the inlet to be blown from one side of the ventilation path divided by the partition wall. The structure is such that only the air that has passed through the evaporator can be blown from the other side of the ventilation path. Therefore, it is possible to supply air with different temperatures from multiple outlets to the vehicle interior without using a heat source, thereby efficiently cooling the vehicle interior according to the temperature distribution without using a heat source. becomes possible.

Furthermore, in the above embodiment, since an inside air door is provided to open and close the inlet, by closing the inlet with the inside air door, air passing through the evaporator from the plurality of outlets can be removed. You can also make it blow out. For this reason, it is not only possible to simply obtain air with different temperatures from multiple outlets, but also to supply only the air that has passed through the evaporator from all the outlets as necessary to achieve maximum cooling power. becomes.

[Brief explanation of drawings]

FIG. 1 is an overall conceptual diagram showing an embodiment of the present invention.

FIG. 2 is a view taken along arrow A in FIG. 1 of the same embodiment.

FIG. 3 is a conceptual diagram showing a conventional vehicle air conditioner.

[Explanation of symbols]

9 Evaporator 25 Scirocco fan 26 One side 27 Other side 28 shy door 30 Movable bulkhead 31 Fixed bulkhead 32 First ventilation route 33 Second ventilation route 39 First vent outlet 43 Second vent outlet 45 Foot outlet 46 Inlet

Claims (1)

[Claims] 1. A fan is provided which sucks the air that has passed through the evaporator from one side and the other side perpendicular to the rotation axis and blows the air in the direction along both sides, and the fan sucks the air that has passed through the evaporator from the side that is perpendicular to the rotation axis and blows the air in the direction along both sides. An inlet for sucking air from one side is provided, and a partition wall is provided that extends along both surfaces and divides the air blowing path of the fan into the one surface side and the other surface side, and each partition wall partitioned by the partition wall A vehicle air conditioner characterized in that each air blowing path communicates with an air outlet opening into a vehicle interior.