JPS6239925Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cooling unit for an automobile in which a blower and an evaporator are housed in a case, the case is further covered with a cover, and the cooling unit is installed on the ceiling of the automobile.

This type of automotive cooling unit is used in vehicles such as one-box cars or small buses, which have a larger interior space than a normal passenger car but narrower than a large bus. A similar conventional example is shown in FIG. 1.

In FIG. 1, a cooling unit for an automobile is installed on the inner surface of a ceiling 1 of an automobile so as to protrude into a passenger compartment 2, and a blower 6 and an evaporator 7 are housed in a case 3 fixed to the ceiling 1. There is. The periphery of the case 3 is further covered with a cover 5, and as the blower 6 rotates, air inside the vehicle is sucked into the case 3 through an inlet 9 formed in the cover 5 and an air inlet 8 formed in the case 3. The air is cooled through the evaporator 7 and becomes cold air, which is blown into the vehicle interior 2 from an outlet (not shown) to cool the interior of the vehicle interior 2. Above cover 5
is provided for the purpose of ensuring the safety of the occupants in the vehicle interior 2, improving the appearance of the automotive cooling unit, and maintaining insulation between the evaporator 7 and the vehicle interior 2.
Therefore, a gap 13 is formed between the cover 5 and the evaporator storage section 3b of the case 3 in which the evaporator 7 is stored.

However, in the past, the void 13
is connected to the blower 6 side only through the air inlet 8 of the case 3, and the air in the gap 13 stays, so when the air conditioner is in operation, the temperature of the air in the gap 13 drops below the dew point. There was a fear that water droplets were generated, collected on the inner surface of the cover 5, and leaked from the suction port 9 of the cover 5 to the passenger compartment 2 side when the blower 6 was stopped.

The object of this invention is to prevent the generation of water droplets due to the gap between the case and the cover being cooled below the dew point as described above.
However, the most distinctive feature of this idea is that
At least one auxiliary suction port is formed in the cover in addition to the suction port located below the blower, and an auxiliary suction port is formed between the auxiliary suction port and the evaporator storage part of the case in which the evaporator is stored, and the cover. This is because the air gap forms an air passageway for preventing condensation. Therefore, when the blower is rotated, the air inside the vehicle is sucked in through the condensation prevention passage in addition to the suction port, so the air within the gap moves in a short period of time and is cooled to below the dew point. Therefore, the above problem can be achieved.

Examples of this invention will be described below with reference to the drawings.

2 and 3, one embodiment of this invention is shown, and a cooling unit for an automobile according to this invention is installed on the inner surface of a ceiling 1 of an automobile in such a way that it projects into a passenger compartment 2. A case 3 is fixed to the case 3 via mounting stays 4, 4, and the periphery of the case 3 is covered by a cover 5 fixed to the case 3 or the ceiling 1.

The case 3 includes a substantially cylindrical scroll portion 3a and a rectangular evaporator storage portion 3b.
The blower 6 is connected to the scroll part 3a of the case 3, and the evaporator 7 is connected to the evaporator storage part 3b of the case 3.
are stored in each.

The blower 6 is, for example, a sirotsko type and is powered by an electric motor 6.
An air inlet 8 is formed in the case 3 and an air inlet 9 is formed in the cover 5 at a position below the blower 6. On the other hand, evaporator 7
is for cooling the air sent through the ventilation passage section 3c by the rotation of the blower 6, and is inserted into a predetermined cooling circuit. Further, in front of the evaporator 7, the case 3 is formed with a blowout section 3d following the evaporator housing section 3b, and this blowout section 3d surrounds the blowout grill section 10 provided on the front surface 5a of the cover 5. A plurality of air outlets 11 are formed in the grill portion 10.

The auxiliary air outlet 12 is formed in the cover 5, and in this embodiment is located on the lower surface 5b of the cover 5 on the side opposite to the suction port, and is located between the evaporator housing portion 3b of the case 3 and the lower surface 5b of the cover 5. The vehicle compartment 2 and the blower 6 are communicated through a gap 13 between them, and an air passage 14 for preventing dew condensation is formed from the auxiliary suction port 12 to the blower 6 through the gap 13. Note that the auxiliary suction port 12 in this embodiment
Although formed on the lower surface 5b of the cover 5, the present invention is not limited to this, and other embodiments may be formed on the cover 5.
It may be one side surface 5c or back surface 5d.

In the above configuration, when the blower 6 is rotated, the pressure inside the scroll portion 3a of the case 3 decreases, so that the air inside the vehicle is sucked into the cover 5 mainly through the suction port 9 and additionally through the auxiliary suction port 12. and then air inlet 8 of case 3.
is inhaled into case 1 from This sucked air is sent to the evaporator 7 through the ventilation passage section 3c of the case 3, and is cooled by passing through the evaporator 7 and becomes cold air. Then, this cold air is blown out from the air outlet 11 of the cover 5, and this action is repeated to cool the vehicle interior 2.

The evaporator storage section 3b of the case 3 is cooled by the evaporator 7, and the gap 13 between the evaporator storage section 3b and the cover 5 constitutes a part of the air passage 14 for preventing condensation.
As the blower 6 rotates, air from the auxiliary suction port 12 is sent into the vehicle interior one after another, and the air is drawn into the blower 6 one after another. Therefore, this void 1
The air inside the space 13 moves to the blower 6 side in a short period of time, so the air inside the gap 13 becomes below the dew point even though it is cooled by the evaporator storage section 3b of the cooled case 3. Not,
This makes it possible to prevent water droplets from forming.

In FIG. 4, another embodiment of this invention is shown. In this embodiment, the invention is applied to an automobile cooling unit having one blower 6, whereas this embodiment has two blowers 6. The difference is that it is applied to a format with 6,6.

That is, the two blowers 6, 6 are connected to the evaporator 7.
is stored in the scroll parts 3a, 3a on both sides of the
Two air inlets 8, 8 and two suction ports 9, 9 are formed in the case 3 and the cover 5, respectively, corresponding to the two blowers 6, 6. The auxiliary suction port 12 is formed at the center of the lower surface 5b of the cover 5, and the two condensation prevention air passages 14, 14 are divided into two parts, so that the same effect as in the embodiment described above can be obtained. It is something to play.

In the above two embodiments, only one auxiliary suction port 12 is formed on the cover 5, but it is of course possible to provide two or more auxiliary suction ports 12 at appropriate locations on the cover 5 in other embodiments.

As described above, according to this invention, an auxiliary suction port is formed in the cover to constitute an air passage for preventing condensation, so that water droplets in the gap between the evaporator housing part of the case and the cover There is no need to worry about it leaking out. In addition, since the air inside the vehicle circulates through the above-mentioned gap, the insulation effect is improved, and less insulation material is required between the evaporator and the case, which reduces the width in the height direction of the automotive cooling unit. This increases the vertical space inside the vehicle. Furthermore, by providing an auxiliary suction port on the cover, the area for sucking the air inside the vehicle increases, which improves the flow distribution of the air inside the vehicle. Therefore, it has advantages such as being inexpensive.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view showing a conventional cooling unit for an automobile, Figs. 2 and 3 show an embodiment of this invention, Fig. 2 is a transverse sectional view, and Fig. 3 is a -A line sectional view, and FIG. 4 is a longitudinal sectional view showing another embodiment. 1...Ceiling of a car, 2...Car interior, 3
...Case, 3b...Evaporator storage section, 5...
...Cover, 6...Blower, 7...Evaporator,
9... Suction port, 12... Auxiliary suction port, 13...
Gap, 14...Air passage for preventing condensation.

Claims (1)

[Scope of utility model registration request] A blower 6 having an air inlet 8 opening downward at the longitudinal side of the horizontally placed evaporator 7 is disposed and housed in a case 3, and a cover 5 is installed around the case 3 with a narrow gap 13. The cover 5 is provided with a suction port 9 directly below the air inlet 8 of the blower 6, and at least one auxiliary suction port 12 is provided on the evaporator side of the cover 5. This auxiliary suction port 12, the evaporator housing part 3b of the case 3 in which the evaporator 7 is housed, and the cover 5
A cooling unit for an automobile, characterized in that an air passage 14 for preventing dew condensation is formed by a gap 13 formed between the cooling unit and the air gap 13.