JPS6139617Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cooler unit installed in an automobile to cool the interior of the vehicle.

As an example of a cooler unit, there is a conventional rear cooler mounted at the rear of an automobile, as shown in FIG. 1, for example. This rear cooler is equipped with a case 1 that has an air intake port 1a and a cold air outlet 1b.Inside the case 1, an evaporator 2 that forms part of the refrigeration cycle and cools the air is located near the intake port 1a. , the blower 3 is the outlet 1b
They are located nearby. The scroll 4 of the blower 3 has its suction port 4a (indicated by imaginary lines) opened into the case 1, and its blow-off port 4b facing upward and connected to the case blow-off port 1b. A sirotskov fan 5 is provided within the scroll 4 so as to be rotated by a DC motor.

Air is sucked in from the suction port 1a by the suction force of the blower 3, is cooled as it passes through the evaporator 2, and this cool air is blown into the vehicle interior through the blow-off port 1b after passing through the scroll 4.

However, in such conventional cooler units, condensed water generated in the evaporator accumulates at the bottom when it passes through the scroll.
There was a problem in that this was diffused by the fan and sprayed from the air outlet into the passenger compartment.

The purpose of this invention is to solve these conventional problems.In addition to providing a drainage port at the bottom of the scroll, this drainage port is also equipped with an on-off valve to allow air flow inside the scroll without impairing the blower's ventilation function. This prevents condensed water from accumulating in the tank.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a diagram showing an embodiment of the present invention, and in the figure, the same reference numerals as in FIG. 1 indicate the same elements as in FIG. 1. As shown in FIG. 2, a drain port 6 is located at the bottom of the scroll 4 of the blower 3.
has been opened to an appropriate size, and this drain port 6
is provided with an on-off valve 7. This valve 7 is configured to close the drain port 6 when the blower 3 is in operation, and to open the drain port 6 when the blower 3 is not in operation.
For example, an elastic body such as a spring may be used to always apply a biasing force in the opening direction to keep the valve normally open, and the positive pressure within the scroll 4 during air blowing operation may be used to create the closed state. Note that 8 is case 1
This is a drain hole opened at the bottom.

Next, the action will be explained.

While the rear cooler is operating, the evaporator operates for cooling and the blower operates for blowing air. As the evaporator operates, moisture in the air cools and condenses into water droplets. This condensed water may flow into the scroll 4 together with the cold air, adhere to the inner circumferential wall, and then accumulate in the lower part. When such accumulated water is diffused by the blowing force of the fan 5 and blown out from the air outlet 16 into the vehicle interior, water droplets fall on the passengers and the like, causing discomfort.

Therefore, in the rear cooler having the above configuration, when the cooler is stopped, the on-off valve 7 opens the drain port 6, and all the condensed water adhering to the scroll 4 is drained from the drain port 6 to the lower part of the case 1.
This is to prevent condensed water from accumulating in the scroll 4. Water in the case 1 is discharged to the outside from the drain hole 8.

During the blower operation of the blower 3, the on-off valve 7 is rotated by the pressure inside the scroll 4 which resists the biasing force of the spring, and the drain port 6 is closed, so that the blower 3 stops blowing air. To maintain the desired air blowing capacity without damage.

In the above embodiment, a case has been described in which the on-off valve is opened and closed by the biasing force of a spring and the blowing pressure of a blower, but a solenoid valve or the like may be used as the on-off valve. Further, although the illustrated embodiment shows a rear cooler, the present invention can also be embodied in a normal cooler unit incorporated in the lower part of an instrument panel.

As explained above, according to the present invention, since a drain port with an on-off valve is provided at the bottom of the scroll of the blower, the condensed water inside the scroll can be drained in a timely manner to prevent condensed water from accumulating inside the scroll. can be prevented from scattering into the vehicle interior.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a conventional example, and FIG. 2 is a sectional view showing an embodiment of the present invention. 1... Case, 1a... Suction port, 1b... Inlet, 2... Evaporator, 3... Blower, 4...
Scroll, 5...fan, 6...drain port, 7...
...Open/close valve.

Claims (1)

[Scope of utility model registration request] In a cooler unit in which an evaporator is disposed on the suction port side and a blower is disposed on the blowout port side in a case having an air suction port and a cold air blowout port, a drain port is provided at the bottom of the scroll of the blower, and a drain port is provided at the bottom of the scroll of the blower. A cooler unit characterized by having an on-off valve that is closed when the blower is in operation and opened when the blower is stopped.