JP3800772B2 - Vehicle-mounted ceiling cooler unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle-mounted ceiling cooler unit.
[0002]
[Prior art]
A conventional cooler unit of this type is shown in FIG. The cooler unit 1 houses a blower 3 that blows air and a cooler (evaporator) 4 that cools the blown air of the blower 3 in a unit case 2 disposed near the ceiling A of the rear seat of the passenger compartment. The unit case 2 is formed with a suction port 23 for sucking air in the passenger compartment and a blower outlet 24 for blowing the cool air cooled by the cooler 3 into the passenger compartment, which is called a so-called ceiling mount cooler unit for vehicles. .
[0003]
In addition, weirs D1 and D2 are provided in the lower case of the unit case 2 to block the drain water (condensed water) of the cooler 4 at two locations, the portion immediately after the suction port 23 and the downstream portion of the blower 3. ing. Furthermore, drainage ports (drain ports) P1 and P2 for discharging drain water accumulated in the weirs D1 and D2 to the outside of the unit case 2 are provided in the vicinity of the weirs D1 and D2 in the lower case. Drain hoses H1 and H2 for guiding drain water to the lower side of the vehicle are connected to the drain ports P1 and P2.
[0004]
[Problems to be solved by the invention]
As described above, this type of cooler unit is attached to the ceiling of the center seat of the passenger compartment or the rear seat. In order to secure a space above the head of the front seat occupant, the cooler unit of FIG. It is desirable to install as follows. In addition, the air volume of the blower 3 is increased in order to secure the feeling of wind speed in the rear seat, and the thickness of the unit case 2 body is reduced in order to reduce the feeling of pressure on the occupant (medium occupant) sitting under the cooler unit. It is desirable.
[0005]
For this reason, the problem relating to the drainage abnormality of the drain water of the cooler 4 as described below occurs during the uphill running shown in FIG. For example, when the air volume of the blower 3 is increased, the drain water of the cooler 4 in the unit case 2 gets over the weir D2 on the rear side of the vehicle, is wound up by the blower 3 and jumps out from the outlet 24.
In addition, as shown in FIG.3 (c), at the time of downhill driving | running | working, drain water is normally drained by the weir D1 and the drain outlet P1.
[0006]
By the way, although the joint part J of drain hose H1 and H2 is fixed to a vehicle compartment side wall, the fixed position is limited from restrictions, such as ensuring of vehicle interior space and aesthetics. For example, as shown in FIG. 3 , when fixed to a storage portion (so-called B pillar) 10 provided in a portion located between the front seat and the rear seat on the side wall of the passenger compartment, FIG. In the uphill running shown , the position of the drain port P2 on the rear side of the vehicle is lower than the joint portion J (drainable line L), and the drain water does not flow through the drain hose H2, but passes over the weir D2 and leaks from the outlet 24. End up.
[0007]
The present invention has been made in view of the above points, and an object of the present invention is to allow a drain water of a cooler to be drained normally in a vehicular ceiling cooler unit even in an inclined state of the cooler unit when traveling uphill.
[0008]
[Means for Solving the Problems]
The present inventor moves the position of the weir inside the unit case to the vicinity of the cooler, that is, the drain water dropping position, and installs the drain port near the weir so that the drain water is not affected by the blower of the blower. Focusing on doing so, we decided to adopt the following technical means.
[0009]
That is, in the first aspect of the present invention, in the vehicular ceiling cooler unit, the unit case (2) has a weir portion (51-53) for blocking drain water generated in the cooler (4) in the vehicle longitudinal direction. Arranged at least three along
In the unit case (2), a drain outlet (61) for discharging drain water blocked by each dam portion (51-53) to the outside of the unit case (2) in the vicinity of each dam portion (51-53). To 63) are provided for each weir (51 to 53) ,
At least one of the dam portions is provided at a fall limit position at the time of climbing drain water generated in the cooler (4) of the unit case (2) ,
At least one of the drain ports is provided in the vicinity of a weir portion provided at the drop limit position .
[0010]
Thereby, even if the any climbing angle while traveling uphill, the drain water generated in the cooler (4) is thus held back in the dam portion provided in the drop limit position (52), near the It is immediately discharged by the drainage port (62) at
Therefore, when traveling uphill, the other weir portions (51, 53) provided separately from the weir portion (52) provided at the above-mentioned fall limit position are in a form to supplement the drain water as an auxiliary, compared to the conventional case. The amount of drain water accumulated in the unit case (2) can be reduced, and drainage abnormalities such as drain water leaking from the outlet (2b) can be prevented.
[0011]
In the invention according to claim 2, the inlet (23) is disposed on the vehicle front side of the unit case (2), and the air outlet (24) is disposed on the vehicle rear side of the unit case (2). Each of the weir portions (51-53) includes a first weir portion (51) formed on the suction port (23) side of the lower surface of the unit case (2) and a lower surface of the unit case (2). Out of the lower limit of the unit case (2) between the third dam part (53) formed on the outlet (24) side and the first and third dam parts (51, 53), the falling limit And a second weir portion (52) formed at the position.
[0012]
Accordingly, the same effect as that of the invention of claim 1 can be realized, and even if the drain water gets over the second weir (52), the drain water that has passed over the first and third weirs (51) , 53) can be prevented from leaking out from the inlet (23) and the outlet (24).
In addition, the code | symbol in the bracket | parenthesis of each said means shows a corresponding relationship with the specific means of embodiment description later mentioned.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments shown in the drawings will be described below. This embodiment will be described as being attached to the ceiling of the rear seat in the cabin of a one-box type automobile.
FIG. 1 is a cross-sectional view showing a state in which the vehicular ceiling cooler unit according to the present embodiment is attached to the passenger compartment ceiling A. A vehicle-mounted ceiling cooler unit (hereinafter referred to as a “cooler unit”) 1 is installed on a ceiling portion of a vehicle interior and cools the rear seat side of the vehicle interior, and is therefore generally referred to as a rear cooler.
[0014]
The cooler unit 1 has a unit case 2 that is disposed in the vicinity of the ceiling of the passenger compartment and divides the main body of the cooler unit 1. The unit case 2 is disposed as shown in FIG. In the unit case 1, for example, an upper case 21 and a lower case 22 are integrally joined.
The side of the unit case 2 on the front side of the vehicle is open to the interior of the vehicle and is provided with a suction port (suction grill) 23 for sucking air in the vehicle. The suction port 23 is provided with a louver 23a for adjusting the air volume and direction of the intake air.
[0015]
An evaporator (cooler) 4 is provided in a vehicle front side portion inside the unit case 2. As shown in FIG. 1, the evaporator 4 has a plurality of refrigerant flow paths 4a, which are connected to a refrigeration cycle (not shown). The refrigerant circuit on the inlet side of the evaporator 4 includes, for example, A temperature-actuated expansion valve (not shown) is provided. By this expansion valve, the high-pressure liquid refrigerant from the refrigerant pipe of the refrigeration cycle is decompressed and sent to the evaporator 4, and the evaporator 4 absorbs the latent heat of evaporation of the decompressed refrigerant flowing through the refrigerant flow path 4a from the air. The air is cooled and dehumidified.
[0016]
The evaporator 4 is installed to be inclined or perpendicular to the vehicle front-rear direction, and is fixed by the surface of the upper case 21 and the surface of the lower case 22 of the unit case 2. Accordingly, drain water falls from the surface 41 of the evaporator 4 that faces the lower case 22 of the unit case when traveling on a flat or uphill.
An electric blower (fan) 3 for blowing air is provided at a downstream portion of the evaporator 4 inside the unit case 2 and is controlled by a control device including an electric circuit (not shown). The blower 3 has, for example, a cylindrical wing shape extending in the left-right direction of the vehicle (perpendicular to the plane of FIG. 1), and is fixed to a side surface of the unit case 2 in the left-right direction of the vehicle (not shown).
[0017]
A fan casing 3 a that forms an air passage is provided above and below the blower 3, and the case 3 a is fixed to a side surface of the unit case 2 in the vehicle left-right direction (not shown), for example. The fan casing 3a forms an air passage for smoothly flowing air from the front of the vehicle through the blower 3 to the rear of the vehicle. In addition, 3b is a packing which consists of rubber | gum etc. which have airtightness and buffering property, and is affixed on the fan casing 3a.
[0018]
The side of the unit case 2 on the rear side of the vehicle is open to the vehicle interior, and is provided with an air outlet (blowout grill) 24 that blows out cool air cooled by the evaporator 4 into the vehicle interior. In the vicinity of the air outlet 24 in the unit case 2, a blown air adjusting unit 24 a that adjusts the air volume, the wind direction, and the like is installed.
The lower case 22 of the unit case 2 has at least three or more (three in this embodiment) weir portions arranged along the vehicle front-rear direction for blocking drain water (condensed water) generated in the evaporator 4. 51, 52, 53 are provided. Each dam part 51-53 has comprised the plate shape extended in a vehicle left-right direction, respectively.
[0019]
The weir 51 (first weir) is disposed between the suction port 23 and the evaporator 4, and the weir 52 (second weir) is disposed between the evaporator 4 and the blower 3. The part 53 (third weir part) is disposed between the blower 3 and the outlet 24.
Here, the dam portion 52 (second dam portion) is provided at the falling limit position of the drain water from the surface 41 of the evaporator 4. The drain water fall limit position is assumed when the climbing angle θ (see FIG. 2A) when the vehicle is climbing up is maximum (for example, about 15 °), and the cooler unit 1 is tilted at this time. The drain water is determined as the position where the drain water falls from the top of the surface 41 of the evaporator 4.
[0020]
In addition, the height of each of the dam portions 51 to 53 is set to a height (for example, about 10 mm) in which the drain water that is blocked does not get over the dam portion in consideration of the generation amount of the drain water and the maximum climbing angle θ. ).
In the unit case 2, drainage ports 61, 62, and 63 are provided in the vicinity of the respective dam portions 51 to 53 for discharging drain water blocked by the respective dam portions 51 to 53 to the outside of the unit case 2. Yes.
[0021]
Drain hoses 71, 72, 73 for guiding drain water to the lower side of the vehicle are connected to all of the drain ports 61-63, respectively. The drain hoses 71 to 73 are connected to and joined to a joint portion (merging portion) 8.
Further, the joint portion 8 is connected to the drain hose 9, and drain water from the drain hoses 71 to 73 is guided to the vehicle lower side by the joint portion 8 and the drain hose 9, and is discharged to the outside of the vehicle. That is, the joint portion 8 and the drain hose 9 are configured as drain water discharge means for joining the drain water from the drain hoses 71 to 73, guiding the water downward and discharging the water to the outside of the vehicle.
[0022]
Here, the joint portion 8 and the drain hose 9 are housed and fixed in, for example, a housing portion 10 provided in a portion located between the front seat and the rear seat on the side wall of the passenger compartment. In the present embodiment, the storage portion 10 and the joint portion 8 are located on the suction port 23 side in the vehicle front-rear direction.
Next, the operation of the above configuration will be described.
[0023]
When an operation switch (not shown) of the cooler unit 1 is turned on, an operation of a refrigeration cycle (not shown) is started, and the evaporator 4 and the blower 3 in the unit case 2 are operated. Then, as shown by the white arrows in FIG. 1, the vehicle interior air is sucked into the unit case 2 from the inlet 23 and cooled and dehumidified by the evaporator 4, and the cool air that has been dehumidified from the air outlet 24 passes through the rear seat side of the vehicle interior. Sent out.
[0024]
The drain water generated by the cooling and dehumidifying action of the evaporator 4 falls to the lower case 22 of the unit case 2, flows on the lower case 22, and is dammed by the dam portions 51 to 53. And it flows through each drain hose 71-73 from each drain outlet 61-63, is guided below the vehicle from the drain hose 9, and is discharged outside the vehicle.
Here, FIG. 2 shows the state of the cooler unit 1 of FIG. 1 during uphill travel (FIG. 2 (a)) and during downhill travel (FIG. 2 (b)).
[0025]
During climbing, as shown in FIG. 2A, drain water falling from the surface 41 of the evaporator 4 is mainly dammed by the second weir 52 and discharged from the drain port 62. Even if the drain water gets over the second weir 52 due to sudden start of the vehicle, sudden turn, or the like, the third weir 53 stops the drain water, so that drain water leakage from the outlet 24 can be prevented.
[0026]
In addition, since the drain port 62 is disposed between the drain port 61 and the drain port 63 in the vehicle front-rear direction, the drain hose 72 connected to the drain port 62 and the joint portion 8 is more horizontal than the drain hose 73. It can be arranged at a steep slope. Therefore, even if the climbing angle θ becomes maximum in FIG. 2A, the drain port 62 can be positioned above the joint portion 8 (drainable line L), and the drain water causes the second weir 52 to You can suppress getting over.
[0027]
2B, drain water is blocked by the weir 51 and discharged from the drain 61, so that drainage can be performed normally and leakage from the suction port 23 can be prevented.
As described above, according to the present embodiment, the drain water generated in the evaporator 4 is dammed up by the weir portion 52 provided at the fall limit position regardless of the climbing angle θ during the climbing run. Since the water is immediately discharged through the drain outlet 62 in the vicinity thereof, the amount of drain water accumulated in the unit case 2 can be reduced as compared with the conventional case, and drainage abnormalities such as drain water leaking from the outlet 2b can be prevented.
[0028]
In the vehicle front-rear direction, another dam portion and a drain outlet may be provided between the dam portion 51 and the dam portion 52 and between the dam portion 52 and the dam portion 53.
Although the present embodiment has been described above, it is needless to say that the installation positions of the inlet and outlet of the unit case, the evaporator, the blower, and each dam portion in the unit case may be changed as appropriate.
[0029]
For example, in the above-described embodiment, the evaporator 4 and the blower 3 may have a reverse positional relationship in the vehicle front-rear direction. In this case, the positions of the dam portions 51 to 53 are appropriately changed. Whatever the positional relationship between the components, at least one of the three or more weirs may be at the falling limit position of the drain water of the evaporator when traveling uphill.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a vehicular ceiling cooler unit according to an embodiment of the present invention.
FIGS. 2A and 2B are explanatory views showing the operation of the embodiment, wherein FIG. 2A shows an uphill traveling time, and FIG.
FIGS. 3A and 3B are cross-sectional views showing a conventional vehicular ceiling-mounted cooler unit, where FIG. 3A shows traveling on flat ground, FIG. 3B shows uphill running, and FIG. 3C shows downhill running.
[Explanation of symbols]
1 ... cooler unit, 2 ... unit case, 3 ... blower, 4 ... evaporator,
23 ... Suction port, 24 ... Air outlet, 51, 52, 53 ... Weir part,
61, 62, 63 ... Drainage port.

Claims (3)

A unit case (2) disposed near the ceiling of the passenger compartment;
A suction port (23) provided in the unit case (2) for sucking air in the passenger compartment;
A blower (3) arranged in the unit case (2) for blowing air;
A cooler (4) disposed in the unit case (2) for cooling the blown air of the blower (3);
In the cooler unit (1) provided with the outlet (24) provided in the unit case (2) and for blowing out the cold air cooled by the cooler (4) into the vehicle interior.
In the unit case (2), at least three or more weir portions (51-53) for blocking drain water generated in the cooler (4 ) are arranged along the vehicle longitudinal direction,
In the unit case (2), drain water blocked by the dam portions (51 to 53) is discharged from the unit case (2) to the vicinity of the dam portions (51 to 53). Drain ports (61-63) are provided for each of the weir portions (51-53),
At least one of the dam portions is provided at a fall limit position when the drain water generated in the cooler (4) of the unit case (2) is traveling uphill ,
The vehicle-mounted ceiling cooler unit , wherein at least one of the drain ports is provided in the vicinity of a dam provided at the drop limit position . The inlet (23) is disposed on the vehicle front side of the unit case (2), and the air outlet (24) is disposed on the vehicle rear side of the unit case (2).
Each of the dam portions (51 to 53) includes a first dam portion (51) formed on the suction port (23) side of the lower surface of the unit case (2), and a lower surface of the unit case (2). Between the third weir portion (53) formed on the outlet (24) side and the first and third weir portions (51, 53) on the lower surface of the unit case (2). The vehicular ceiling-mounted cooler unit according to claim 1, further comprising a second weir portion (52) formed at the drop limit position. The cooler (4) is disposed on the inlet (23) side of the unit case (2), and the blower (3) is disposed on the outlet (24) side of the unit case (2). And
The first weir (51) is disposed between the inlet (23) and the cooler (4), and the second weir (52) is the cooler (4) and the blower (3). The vehicle ceiling according to claim 2, wherein the third weir (53) is disposed between the blower (3) and the outlet (24). Place cooler unit.

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