JPS623290Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cooler unit structure for automobiles and the like.

A car cooler unit is generally configured to cool outside air or vehicle interior air sucked in by a blower in an evaporator section, and then blow it out into the vehicle interior from a cold air outlet (for example, according to Japanese Utility Model Publication No. 55-4465).
(see publication).

Moisture separated from the air in the evaporator section is collected in one place within the evaporator case and is discharged to the outside through the drain.
Once separated, the water droplets adhering to the wind guide wall of the case and flowing down are scattered by the fast flow of cold air, mixed with the cold air, and blown into the passenger compartment, causing discomfort to the occupants. Sometimes.

The present invention attempts to solve the above-mentioned conventional problems with an extremely simple structure, and will be described below with reference to the accompanying drawings.

In the figure, 1 is a case in which an evaporator 2 is installed, and the case 1 is provided with an outside air inlet 3 for introducing outside air and an inside air inlet 4 for introducing air into the vehicle interior. 4 is provided, and the shutter 5 is configured to open either one of the outside air and inside air inlet ports 3 and 4.

In the conduit passage downstream of the evaporator 2 of the case 1, a bent part is formed where the cold air after passing through the evaporator changes its wind direction by approximately 90 degrees and reaches the outlet 6. A duct 7 is connected to the outlet 6. Although not shown in the figure, the tip of the duct 7 communicates with an outlet for blowing cold air into the vehicle interior, for example, the duct 7
Outside air or cabin air absorbed through the outside air inlet 3 or the inside air inlet 4 by a blower (not shown) installed downstream of the evaporator 2 is cooled while passing through the evaporator 2, and passes through the duct 7 as cold air. The air is configured to blow out into the vehicle interior from an air outlet (not shown).

Reference numeral 8 denotes a wavy portion formed on the inner wall surface of the bent portion downstream of the evaporator 2 of the case 1. The structure is such that water droplets adhering to the wavy portions 8 flow downward along the valleys of the wavy portions 8.

Reference numerals 9 and 10 indicate a drain hole and a drain hose for discharging water flowing down from the corrugated portion 8 to the lower surface of the case 1 to the outside.

As described above, according to the present invention, in which the wavy portion 8 is formed on the inner wall surface of the bent part of the air guide path downstream of the evaporator, the ridgeline of the peaks and valleys is almost perpendicular to the flow direction of the cold air, the condensation flows down in the second part of the evaporator. Some of the water droplets are scattered by the air flow flowing through the evaporator section, become fine water droplets, mix into the cold air, and reach the bend in the air guide path. Fine water droplets mixed into the cold air due to the centrifugal force when changing the wind direction are attached to and captured by the wavy part of the inner wall surface of the bent part, and most of the water droplets adhering to the wavy part 8 fall into the valleys of the wavy part and are trapped in the troughs. It is guided and flows downward.

In this case, the flow direction of the cold air is almost perpendicular to the direction in which the water droplets flow, and the influence of the cold air flow on the water droplets that are blocked by the crests of the corrugated parts and flow down the valleys is extremely small, and the water droplets flow in the cold air. The water droplets are accurately discharged to the outside from the drain hole 9 and the drain pipe 10 without being caught in the water, and problems such as water droplets being mixed into the cold air and blown into the vehicle interior can be almost completely prevented.

The illustrated embodiment shows an example in which the wavy portions 8 are provided on the vertical wall surface and the upper wall surface of the bent portion of the air guide path. It goes without saying that it is necessary to have a structure in which the upper wall surface is inclined.

As described above, according to the present invention, with an extremely simple configuration, moisture that is once separated in the evaporator section and re-mixed into the cold air can be effectively captured at the bent section of the air guide path downstream of the evaporator. , which accurately prevents the problem of fine water droplets being blown into the vehicle interior with cold air mixed in, and provides comfortable cooling, especially for vehicles where the air guide distance from the evaporator to the outlet cannot be very large. This is extremely effective for use in cooler units.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional plan view of essential parts showing an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line A-A in FIG. DESCRIPTION OF SYMBOLS 1... Case, 2... Evaporator, 3... Outside air inlet, 4... Inside air inlet, 5... Inside/outside air switching shutter, 8... Wavy portion, 9... Drain hole.

Claims (1)

[Scope of utility model registration request] In a cooler unit in which a bent part is formed in the air guide path downstream of the evaporator to change the direction of the cold air flowing through the evaporator by approximately 90 degrees, the ridge lines of the peaks and valleys on the inner wall surface of the bent part are almost perpendicular to the flow direction of the cold air. 1. A cooler unit structure for an automobile, etc., characterized in that a wavy portion is formed so that water droplets adhering to the wavy portion flow downward along the troughs of the wavy portion.