JPH0546487Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention is a cooler unit case that improves the heat insulation of an evaporator and improves the drainage of condensed water from the evaporator. Regarding the structure of

(Prior Art) A cooler unit is generally installed between an intake unit and a heater unit, and the air sucked in by the operation of a fan provided in the intake unit is transferred to an evaporator provided in the cooler unit. This cooled air is supplied into the heater unit. However, depending on the automobile air conditioner,
It is called a suction type, and a cooler unit is sometimes installed in front of the intake unit. In order to insulate the evaporator, a normal cooler unit
A foamed resin is pasted inside the cooler unit case.

(Problems that the invention aims to solve) As a result, not only does the number of parts increase and the assembly performance is not good, foamed resin does not have good drainage properties, and water leaks from the drain installed in the cooler unit case. There was a problem at a store where condensed water was not properly drained. If the drainage of condensed water is not good, the foamed resin part will always be damp, and microorganisms will grow in that part, causing unpleasant odors to be emitted inside the car when the car air conditioner is activated. It may be sent to.

From the viewpoint of improving the heat insulation properties of the cooler unit, as shown in Japanese Utility Model Application No. 55-16928, the cooler unit case has a double structure inside and outside.
A system has been developed in which the airtight space formed between the cooler units is insulated.
However, even if the case of the cooler unit has a double structure like this, unless the drainage of condensed water from the drain is good, it will not be possible to suppress the occurrence of abnormal odors due to the growth of microorganisms as mentioned above. The dot was hot.

The present invention has been made in view of the problems of the prior art described above, and aims to improve the heat insulation properties of the evaporator and to improve the drainage of condensed water from the evaporator.

[Structure of the invention] (Means for solving the problem) The present invention for achieving the above object is a case of a cooler unit that houses an evaporator inside and cools air blown into the passenger compartment. The unit case is formed by an inner case that supports the evaporator, and an outer case that supports the inner case with a predetermined heat insulating space in between, and the heat insulating space is provided on the air upstream side of the cooler unit case. An air inlet side opening is formed, and the heat insulating space is communicated with a drain provided in the outer case for discharging condensed water from the evaporator, so that air is discharged from the drain together with the condensed water. This is the structure of the cooler unit case.

(Function) The cooler unit case is formed by an inner case and an outer case, and since a heat insulating space is formed between these two cases, the heat insulation of the evaporator is achieved by this heat insulating space. Also,
Air flows into this insulated space, and this air is discharged from the drain, so
The ability to drain condensed water has been greatly improved, preventing this area from getting wet.

(Example) Hereinafter, a description will be given based on an example of the present invention shown in the drawings. Each of the drawings shows a cooler unit 1 according to an embodiment of the present invention, and each cooler unit 1 is installed between an intake unit and a heater unit (not shown).

The cooler case constituting the cooler unit 1 of the present invention has an inner case 2 and an outer case 3. Each of the cases 2 and 3 is formed by combining two upper and lower case bodies 2a, 2b, 3a, and 3b. has been done. In other words, each case 2 and 3
It has a half-split shape. In FIG. 1, reference numeral D1 indicates two case bodies 3 constituting the outer case 3.
Indicates the dividing line that matches a and 3b, and is marked D2
are two case bodies 2a constituting the inner case 2,
The parting line where 2b are matched is shown.

As shown in FIG. 2, an evaporator 4 for cooling air blown into the vehicle interior is housed in an inner case 2, and this inner case 2 has a heat insulating space 5 at a predetermined interval. It is designed to be supported within the outer case 3 via the outer case 3. A spacer 6 is provided between the outer case 3 and the inner case 2 in order to set the gap of the heat insulating space 5 to a predetermined interval.
is provided.

Between the air inlet side of the outer case 3 and the air inlet side of the inner case 2, there is an air inlet side opening 7 that communicates with the heat insulating space 5 and allows air from an intake unit (not shown) to flow into the heat insulating space 5. is formed. Therefore, the air from the intake unit flows into the evaporator 4 as shown by the white arrow A.
In addition to most of the air flowing inside, a portion also flows into the heat insulating space 5 as shown by arrow B.

In the lower case body 3b of the outer case 3,
As shown in FIG. 3, a drain 8 is formed for discharging water condensed in the evaporator 4 to the outside of the cooler unit 1. When the cooler case 1 is mounted on a vehicle, a hose is connected to the drain 8, and condensed water is guided out of the vehicle through this hose. A drainage hole 9 formed in the drain 8 is in communication with the heat insulating space 5 through a communication hole 10 formed in the lower case body 2b of the inner case 2. As a result, the condensed water generated in the evaporator 4 is guided from the inner case 2 through the communication hole 10 formed in the inner case 2 to the drain 8, from which it is discharged outside the vehicle. Since some of the air indicated by B flows, drainage performance is greatly improved. Therefore, when the operation of the evaporator 4 is stopped, the inside of the case does not become damp, and the generation of unpleasant odors caused by the proliferation of microorganisms in this area is suppressed to the utmost. At the same time, since the heat insulating space 5 exists, the evaporator 4 is sufficiently isolated from the outside. In particular, since the heat insulation space 5 achieves heat insulation from the outside, it becomes unnecessary to use a heat insulating material such as foamed resin for this heat insulation, and the evaporator 4 is directly supported by the inner case 2. This also improves drainage of condensed water. In other words, the inner case 2 and outer case 3 are usually made of thermoplastic resin molded into a predetermined shape by injection molding, but this molding gives the inner surfaces of the cases 2 and 3 a mirror-like finish, making them water-resistant. Improves drainage performance.

[Effects of the invention] As described above, according to the invention, the cooler unit case includes an inner case that supports the evaporator, and an outer case that supports the inner case with a predetermined heat insulating space between the inner case and the inner case. forming an air inlet side opening of the heat insulating space on the air upstream side of the cooler unit case, and communicating the heat insulating space with a drain provided in the outer case and discharging condensed water from the evaporator;
Since the air is discharged from the drain together with the condensed water, the evaporator is insulated by the heat insulating space, and since air is guided into the heat insulating space, the air generated in the evaporator is This condensed water is reliably discharged to the outside of the vehicle along with this air, and the drainage performance of the condensed water is greatly improved. As a result, the inside of the cooler unit case does not become damp when the evaporator is not in operation, and the proliferation of microorganisms due to this dampness is suppressed, and abnormal odors caused by the presence of microorganisms are prevented from flowing into the vehicle interior.

[Brief explanation of drawings]

1 is a perspective view showing a cooler unit case according to an embodiment of the present invention, FIG. 2 is a sectional view of FIG. 1, and FIG. 3 is a sectional view taken along the line - in FIG. 2. 1... Cooler unit case, 2... Inner case, 3... Outer case, 4... Evaporator, 5
...Insulation space, 7...Air inlet side opening, 8...
drain.

Claims (1)

[Scope of utility model registration request] In a case of a cooler unit that houses an evaporator 4 inside and cools air blown into the vehicle interior, the cooler unit case is divided into an inner case 2 that supports the evaporator, and an inner case 2 that supports the evaporator.
and an outer case 3 that supports the inner case 2 via a predetermined heat insulating space 5, and an air inlet side opening 7 of the heat insulating space is formed on the air upstream side of the cooler unit case, and the outer case 3 supports the inner case 2 through a predetermined heat insulating space 5. A structure of a cooler unit case characterized in that the heat insulating space 5 is communicated with a drain 8 provided in the case 3 for discharging condensed water from the evaporator 4, and air is discharged from the drain 8 together with the condensed water.