JP4055558B2 - Air conditioner for vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle air conditioner.
[0002]
[Problems to be solved by the prior art invention]
In the conventional vehicle air conditioner, when it is necessary to perform cooling operation in summer or the like, the face blower provided on the instrument panel (instrument panel) from the time of rapid cooling operation (cool down operation) to the steady operation state. While maintaining the face mode in which conditioned air (cold air) is blown locally from the exit toward the upper body of the occupant, the amount of air blown, that is, the voltage applied to the electric motor for the blower, is controlled according to the progress of the rapid cooling operation. It was.
[0003]
For this reason, in the conventional vehicle air conditioner, during cooling operation, when the occupant wants to directly hit the cold wind or does not want to hit the cold wind directly, the wind direction control plate such as the blow grill, There is a problem that the occupant needs to manually operate at least one of the mode and the air flow rate, which is troublesome.
[0004]
In addition, if the vehicle is parked for a long time under the hot sun in summer, the temperature of the vehicle interior wall such as the upper surface of the instrument panel and the entrance / exit door as well as the indoor air temperature will rise. Because the cool air is only blown locally from the face air outlet toward the upper body of the passenger, the cool air does not hit the upper surface of the instrument panel or the interior wall of the passenger door, and the temperature of the interior wall of the vehicle is kept indoors. Does not drop as much as air. For this reason, since the vehicle interior wall portion continues to be in a high temperature state, the passenger feels a non-uniform thermal feeling due to the radiant heat from the vehicle interior wall portion, and the comfortable air conditioning feeling is impaired.
[0005]
In view of the above points, the present invention firstly provides a new vehicle air conditioner that is different from the conventional one, and secondly, it is intended to improve comfort and operability.
[0008]
[Means for Solving the Problems]
The present invention, in order to achieve the above object, according to the invention of claim 1, direct outlet blowing directly toward the conditioned air temperature is adjusted to the occupant (3-5, 11, 13) and ,
An indirect air outlet (6, 9, 12) for indirectly supplying conditioned air to the passenger;
Rapid cooling operation progress determination means for determining the progress of rapid cooling operation;
Based on the determination result of the rapid cooling operation progress state determination means, during the cooling operation for controlling the amount of air blown from the direct outlet (3-5, 11, 13) and the amount of air blown from the indirect outlet (6, 9, 12) for example Bei and an air blow-out control means,
As a direct outlet, at least a face outlet (3-5, 13) provided on the instrument panel (1) and opening toward the passenger side is provided,
The indirect air outlets (6, 9, 12) are provided on the interior wall of the vehicle interior where the temperature rises during summer parking and releases radiant heat toward the occupant when boarding the occupant. Cold air from the indirect air outlets (6, 9, 12) The temperature of the vehicle interior wall is lowered by blowing,
The air blowing control means at the time of cooling operation is the direct outlet (3-5, 11, 13) when the progress state of the rapid cooling operation determined by the rapid cooling operation progress state determining means is on the later state side than the predetermined state. The amount of air blown out from the direct air outlet (3-5, 11, 13) when the traveling state is closer to the initial state than the predetermined state,
Further, the air blowing control means during cooling operation is the indirect air outlet (6, 9, 12) when the progress state of the rapid cooling operation determined by the rapid cooling operation progress state determining means is on the later state side than the predetermined state. The amount of air blown out from the indirect air outlets (6, 9, 12) when the progressing state is closer to the initial state than the predetermined state is made larger .
[0009]
As a result, at the time of cooling operation, the air outlet is automatically blown out as the rapid cooling operation proceeds without manually operating at least one of the wind direction control plate such as the blow grill, the blow mode and the air flow rate. since manner change can provide while eliminating the hassle of manual operation, a good air conditioning feeling to the passenger.
Specifically, according to the first aspect of the present invention, at least the face air outlets (3 to 5, 13) provided on the instrument panel (1) and opening toward the occupant side are directly used as air outlets. In the initial state of rapid cooling operation, by increasing the amount of air blown directly from the air outlet, a large amount of cool air is blown from the direct air outlet including the face air outlet toward the occupant, giving the occupant a feeling of cool air Rapid cooling can be performed while feeding.
In the latter stage of rapid cooling operation, the amount of air blown directly out of the direct outlet is automatically reduced, so that the cold wind continues to hit the occupant and the occupant feels troublesome without manual operation of wind direction adjustment. It can be resolved automatically.
Also, the amount of air blown from the indirect air outlet is reduced in the initial state of the rapid cooling operation and automatically increased in the later stage, so rapid cooling is not required without forcing the occupant to manually adjust the wind direction. In the latter stage of operation, cooling of the passenger compartment can be continued with a good air-conditioning feeling by blowing cold air from the indirect outlet.
In addition, in the invention described in claim 1, the indirect air outlet (6, 9, 12) is provided in a vehicle interior wall portion that rises in temperature during summer parking and emits radiant heat toward the occupant when boarding the occupant. The temperature of the wall portion is lowered by blowing cold air from the indirect air outlets (6, 9, 12). Therefore, in the latter stage state of the rapid cooling operation, the temperature of the vehicle interior wall can be lowered by the cold air blowing from the indirect outlet. Accordingly, it is possible to prevent the passenger from feeling a sense of heat due to the release of radiant heat from the vehicle interior wall, and to provide the passenger with a more comfortable feeling of air conditioning .
[0010]
According to a second aspect of the present invention, in the vehicle air conditioner according to the first aspect, the air blowing control means during the cooling operation is such that the progress state of the rapid cooling operation determined by the rapid cooling operation progress state determining means is predetermined. When it is in the initial state side from the state, the amount of air blown directly from the outlet (3-5, 11, 13) is made larger than the amount of air blown from the indirect outlet (6, 9, 12).
[0011]
Thereby, a favorable air-conditioning feeling can be given with respect to a passenger | crew reliably.
[0012]
According to a third aspect of the present invention, in the vehicle air conditioner according to the first or second aspect of the invention, the air blowing control means during cooling operation indicates the progress state of the rapid cooling operation determined by the rapid cooling operation progress state determining means. The air volume blown out from the indirect air outlet (6, 9, 12) is larger than the air volume directly blown out from the direct air outlet (3, 5, 13) when being on the late state side from the predetermined state.
[0013]
Thereby, a favorable air-conditioning feeling can be given with respect to a passenger | crew reliably.
[0014]
According to a fourth aspect of the present invention, in the vehicle air conditioner according to any one of the first to third aspects, the air blowing control means during cooling operation ends the rapid cooling operation by the rapid cooling operation progress state determining means. When it is determined that the air-conditioning air is blown from the indirect air outlets (6, 9, 12), and the total amount of air blown into the room is at least when the progress state of the rapid cooling operation is on the initial state side It is characterized by being made smaller than the total air volume blown into the room.
[0015]
Thereby, a favorable air-conditioning feeling can be given with respect to a passenger | crew reliably.
[0017]
According to a fifth aspect of the present invention, in the vehicle air conditioner according to any one of the first to fourth aspects, as a direct air outlet , a seat air outlet ( which is provided in the seat and blows air toward the passenger ) 11) is further provided .
[0018]
According to a sixth aspect of the present invention, in the vehicle air conditioner according to any one of the first to fifth aspects, the vehicle interior wall is an upper surface wall of the instrument panel (1), and the indirect air outlet is An instrument panel outlet (6) for blowing air from substantially the entire upper surface of the instrument panel (1) .
[0019]
According to a seventh aspect of the present invention, in the vehicle air conditioner according to any one of the first to fifth aspects, the vehicle interior wall portion is a wall portion of a passenger door (8), and the indirect air outlet is It is a door outlet (9) which blows air out from the door (8) for getting on and off .
[0020]
According to an eighth aspect of the present invention, in the vehicle air conditioner according to any one of the first to fifth aspects, the vehicle interior wall portion is a wall portion of a vehicle interior ceiling, and the indirect air outlet is It is a ceiling blower outlet (12) which blows off air from a ceiling, It is characterized by the above-mentioned .
[0021]
Incidentally, the reference numerals in parentheses of each means described above are an example showing the correspondence with the specific means described in the embodiments described later.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
FIG. 1 is a view showing a passenger compartment of a vehicle equipped with a vehicle air conditioner according to the present embodiment, FIGS. 2 to 4 are views showing an air blowing state during cooling operation, and FIG. 5 is a cooling operation. It is a chart which shows the change of the blowing air quantity and room temperature in time.
[0023]
As shown in FIG. 1, an instrument 2 such as a speedometer is housed on the driver's seat side of the instrument panel 1 extending in the vehicle width direction on the front side of the passenger compartment, and blows out indoors on the passenger seat side. An air conditioning unit (not shown) for adjusting the temperature and humidity of the air is accommodated.
[0024]
The air conditioning unit houses air cooling means such as an evaporator, air heating means such as a heater, and a blow mode door that selectively opens and closes a blow outlet that blows air blown into the room to control the blow mode. Yes. And the ventilation unit which ventilates the air which blows off indoors is provided in the airflow most upstream part of the air-conditioning unit.
[0025]
Further, a meter outlet 3 is provided in a portion of the instrument panel 1 where the instrument 2 is accommodated to blow out the conditioned air whose temperature is adjusted by the air conditioning unit toward the upper body of the driver's occupant. Among these, on the upper side of the glow box provided on the passenger seat side, there is provided a passenger seat face outlet 4 for blowing air-conditioned air toward the upper body of the passenger on the passenger seat.
[0026]
Further, side face outlets 5 for blowing conditioned air to the upper side of the passenger compartment are provided at both ends in the width direction of the instrument panel 1, and the conditioned air is provided over the entire upper surface of the instrument panel 1 (shaded portion in FIG. 1). An instrument panel outlet (diffusion outlet) 6 is provided for spraying air-conditioned air so that the air oozes out.
[0027]
Further, a defroster outlet 7 for blowing conditioned air toward the windshield is provided near the windshield in the instrument panel 1, and a foot for blowing the conditioned wind toward the feet of the passengers on the lower side of the instrument panel 1. An air outlet (not shown) is provided.
[0028]
Furthermore, the door 8 for entrance / exit is provided with the door blower outlet 9 which spreads an air-conditioning wind so that an air-conditioning wind oozes out, and the seat blow of the seat 10 which blows air directly on a passenger | crew at the seat back and seating part of the seat 10 is provided. An outlet 11 is provided.
[0029]
The air outlets 3 to 7, 9, and 11 are supplied with conditioned air from the air conditioning unit via ducts (not shown).
[0030]
Next, the characteristic operation of the air conditioner according to this embodiment will be described.
[0031]
The characteristic operation of the air conditioner according to this embodiment is that cool-down operation, that is, rapid cooling operation, is divided into a plurality of stages (for example, an initial stage and a late stage), and in the initial stage, as shown in FIG. In the state where the air blowing amount of the air blowing unit is maximized, air conditioned air is blown out from the face air outlets such as the meter air outlet 3 and the passenger face face air outlet 4 and the seat air outlet 11 to directly blow cold air on the passenger ( 2), the total blown air volume is decreased in accordance with the progress of the cool-down operation, that is, the decrease in the indoor air temperature.
[0032]
When the cool-down operation further proceeds and the room temperature falls to a predetermined temperature and reaches a later stage, the decrease in the total air volume is stopped and the conditioned air is blown out from the instrument panel outlet 6 and the door outlet 9. While supplying cold air to the passenger indirectly (see FIG. 3), while increasing the amount of air blown from the indirect air outlets such as the instrument panel air outlet 6 and the door air outlet 9, the face air outlet 11 and the seat air outlet 11 directly Reduce the amount of air blown from the outlet.
[0033]
Thereafter, when the cool-down operation is completed, the conditioned air is blown out only from the indirect air outlet (see FIG. 4), and the total amount of air blown into the room is the total amount blown into the room in the initial stage of the cool-down operation. Make it smaller than the air volume.
[0034]
In the present embodiment, a temperature difference ΔT between the indoor air temperature and the set temperature or a temperature difference ΔT between the indoor air temperature and the target blowing temperature TAO is calculated, and the temperature difference ΔT is equal to or greater than the first predetermined temperature difference T1. Sometimes, it is considered that the cool-down operation is in the initial stage, and the cool-down operation is performed when the temperature difference ΔT is less than the first predetermined temperature difference T1 and greater than the second predetermined temperature difference T2 that is smaller than the first predetermined temperature difference T1. When the temperature difference ΔT is smaller than the third predetermined temperature difference T3, which is smaller than the second predetermined temperature difference T2, it is considered that the cool-down operation has ended and the steady operation state has been reached. .
[0035]
Incidentally, the target blowing temperature TAO is a control target air temperature determined based on a set temperature set by the occupant, an inside air temperature, an outside air temperature, and the like. Usually, as the target blowing temperature TAO decreases, electronic control for an air conditioner is performed. The device is judged to require a large cooling capacity.
[0036]
Next, the function and effect of this embodiment will be described.
[0037]
In the initial stage of the cool-down operation, the cool air is blown out from the direct air outlets such as the meter air outlet 3, the passenger face face air outlet 4 and the seat air outlet 11 to the occupant. It can be carried out.
[0038]
By the way, conventionally, since the conditioned air blown from the seat needs to be adjusted by manual operation, there is a problem that the operation is not only complicated but also highly likely to be performed during driving. .
[0039]
On the other hand, in this embodiment, since the air volume blown out from the seat outlet 11 is also automatically controlled, the passenger gives a comfortable rapid cooling feeling to the passenger without adjusting manually during driving. Can do.
[0040]
In addition, during the cool-down transition period when the room temperature gradually decreases, the occupant begins to feel annoying if the wind continues to hit. Conventionally, the occupant manually adjusted the wind direction. The air outlet that blows out the conditioned air is changed according to the driving state of the operation, so that the cool air is supplied to the entire passenger compartment while providing a good feeling of air conditioning to the occupant while solving the complexity of the wind direction. be able to.
[0041]
In addition, as the indoor temperature decreases, the flow from the direct air outlet to the indirect air outlet will shift, reducing the annoyance felt by the occupant during the cool-down transition period and adjusting the wind direction. It is possible to provide a good feeling of air conditioning to the occupant while solving the complexity.
[0042]
Further, in the latter stage of the cool-down operation, the conditioned air is blown from the upper surface of the instrument panel 1 (the instrument panel outlet 6) and the passenger door 8 (door outlet 9), so the upper surface of the instrument panel 1 and the passenger door 8 The temperature of the inner wall of the vehicle can be lowered.
[0043]
Therefore, it is possible to prevent the occupant from feeling a non-uniform thermal feeling due to the radiant heat from the vehicle interior wall, so that a comfortable feeling of air conditioning can be given to the occupant.
[0044]
(Second Embodiment)
In the present embodiment, a ceiling air outlet 12 (see FIG. 7) that blows air from the vehicle interior ceiling is provided as an indirect air outlet.
[0045]
6 shows the conditioned air blowing state in the initial stage of the cool-down operation. FIG. 7 shows the conditioned air blowing state in the latter stage of the cool-down operation. FIG. It shows the blowing state of the conditioned air during the steady operation.
[0046]
(Third embodiment)
In the first embodiment, the face air outlet directly forming the air outlet is constituted by the meter air outlet 3 and the passenger side face air outlet 4, but in this embodiment, as shown in FIG. 9, the meter air outlet 3 and the assistant The seat-side face air outlet 4 is abolished, and a center face air outlet 13 is provided at a substantially central portion in the width direction of the instrument panel 1 to constitute a face air outlet that directly forms the air outlet.
[0047]
(Other embodiments)
In the above-described embodiment, in the initial stage of the cool-down operation, the air volume is 0 from the indirect air outlets such as the instrument panel air outlet 6 and the door air outlet 9, but the present invention is not limited to this. The conditioned air may be blown from the indirect air outlet from the initial stage of the cool-down operation, and the air volume at the indirect air outlet may be increased as the temperature in the passenger compartment decreases.
[0048]
Further, in the above-described embodiment, the cool-down operation is divided into two (initial stage and late stage) and the blowout control is performed. However, the present invention is not limited to this, for example, three or more, Alternatively, the blowout control may be performed in a stepless manner.
[Brief description of the drawings]
FIG. 1 is a diagram showing a vehicle interior of a vehicle equipped with a vehicle air conditioner according to a first embodiment of the present invention.
FIG. 2 is a view showing a state in which conditioned air is blown out in an initial stage of cool-down operation in the vehicle air conditioner according to the first embodiment of the present invention.
FIG. 3 is a diagram showing a state of air-conditioning air blowout at a later stage of cool-down operation in the vehicle air-conditioning apparatus according to the first embodiment of the present invention.
FIG. 4 is a diagram showing a conditioned air blowing state after completion of a cool-down operation in the vehicle air conditioner according to the first embodiment of the present invention.
FIG. 5 is a graph showing changes in blown air volume and room temperature in the vehicle air conditioner according to the first embodiment of the present invention.
FIG. 6 is a diagram showing a blown-out state of conditioned air in the initial stage of cool-down operation in the vehicle air conditioner according to the second embodiment of the present invention.
FIG. 7 is a view showing a blown-out state of conditioned air at a later stage of cool-down operation in the vehicle air conditioner according to the second embodiment of the present invention.
FIG. 8 is a diagram showing a blown-out state of the conditioned air after completion of the cool-down operation in the vehicle air conditioner according to the second embodiment of the present invention.
FIG. 9 is a view showing a passenger compartment of a vehicle equipped with a vehicle air conditioner according to a third embodiment of the present invention.
[Explanation of symbols]
1 ... Instrument panel, 2 ... Instrument (meter),
3… Meter outlet (driver's side face outlet),
4. Passenger side face outlet, 5 ... Side face outlet,
6 ... Instrument panel outlet, 7 ... Defroster outlet, 9 ... Door outlet,
11 ... Seat outlet.

Claims (8)

A direct outlet (3-5, 11, 13) that directly blows air-conditioned air whose temperature is adjusted toward the passenger;
An indirect air outlet (6, 9, 12) for indirectly supplying the conditioned air to the passenger;
Rapid cooling operation progress determination means for determining the progress of rapid cooling operation;
Based on the determination result of the rapid cooling operation progress state determination means, the amount of air blown out from the direct outlet (3-5, 11, 13) and the amount of air blown out from the indirect outlet (6, 9, 12) are controlled. Bei example and an air blow-out control means during the cooling operation,
As the direct air outlet, at least a face air outlet (3-5, 13) provided on the instrument panel (1) and opening toward the passenger side is provided,
The indirect air outlet (6, 9, 12) is provided in a vehicle interior wall that increases in temperature during parking in summer and emits radiant heat toward the occupant when boarding the occupant, from the indirect air outlet (6, 9, 12). The temperature of the vehicle interior wall is lowered by blowing out cold air.
The air blowing control means at the time of the cooling operation is the direct air outlet (3-5, 11, 11) when the progress state of the rapid cooling operation determined by the rapid cooling operation progress state determination means is on the later state side than the predetermined state. 13) The amount of air blown from 13) is made smaller than the amount of air blown from the direct air outlet (3-5, 11, 13) when the progressing state is closer to the initial state than the predetermined state,
Further, the air blowing control means during cooling operation is configured such that the indirect air outlets (6, 9,...) When the progressing state of the rapid cooling operation determined by the rapid cooling operation progress state determining unit is on the later state side than the predetermined state. 12) The air conditioner for vehicles is characterized in that the amount of air blown out from 12) is made larger than the amount of air blown out from the indirect air outlet (6, 9, 12) when the traveling state is closer to the initial state than the predetermined state . The air blowing control means during cooling operation is configured to output the direct air outlets (3 to 5, 11 ) when the progressing state of the rapid cooling operation determined by the rapid cooling operation progress state determining unit is closer to the initial state than the predetermined state. , air-conditioning system according to claim 1, characterized in that larger than the air volume blowing air volume blown from 13) from the indirect outlet (6,9,12). The air blowing control means during the cooling operation is configured such that the indirect air outlet (6, 9, 12) when the progressing state of the rapid cooling operation determined by the rapid cooling operation progress state determining unit is on a later state side than a predetermined state. The vehicle air conditioner according to claim 1 or 2 , wherein the amount of air blown out from the air is made larger than the amount of air blown out from the direct outlet (3-5, 11, 13). The air blowing control means during cooling operation blows conditioned air from the indirect air outlets (6, 9, 12) when the rapid cooling operation progress state determining means determines that the rapid cooling operation has ended. any one of claims 1 to 3, characterized in that less than the total amount of wind blown out into the room when the progress of at least rapid cooling operation the total air volume to be blown into the room is in the initial state side The vehicle air conditioner described in 1. The vehicle air conditioner according to any one of claims 1 to 4 , further comprising a seat air outlet (11) provided on the seat for blowing air toward an occupant as the direct air outlet. . Characterized in that the passenger compartment wall is a top wall portion of the instrument panel (1), the indirect outlet is the instrument panel (1) the instrument panel air outlet to blow out air from the upper surface substantially entire region of (6) The vehicle air conditioner according to any one of claims 1 to 5 . Wherein the vehicle interior wall portion is a wall portion of the passenger door (8), the indirect air outlet, wherein said from passenger door (8) is a door air outlet to blow out air (9) Item 6. The vehicle air conditioner according to any one of Items 1 to 5 . The said vehicle interior wall part is a wall part of a vehicle interior ceiling, and the said indirect blower outlet is a ceiling blower outlet (12) which blows off air from the said vehicle interior ceiling, The any one of Claim 1 thru | or 5 characterized by the above-mentioned. The vehicle air conditioner according to claim 1.

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