JPH051912U - Air cooling unit - Google Patents

Abstract

(57) [Abstract] [Purpose] The structure of the air cooling unit 10 is simplified by omitting the hot gas pipe 5 for melting the frost adhering to the drain pan 4, reducing its cost and at the same time making it thinner. Try. [Structure] The lower surface of the air cooler 2 is disposed in close contact with the bottom surface of the drain pan 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an air cooling unit suitable for an air conditioner, a refrigerator and a refrigerating device.

[0002]

[Prior Art]

 An example of a conventional air cooling unit is shown in FIG. An air cooler 2 and a blower 3 are built in a casing 1 of the air cooling unit 10, and a drain pan 4 is installed below the air cooler 2. On the bottom surface of the drain pan 4, as shown in FIG. 2B, a meandering hot gas pipe 5 is placed and fixed by a holding member 6. The air cooler 2 is provided with a large number of heat transfer tubes 21 and a large number of fins 22 connecting these tubes to each other, as shown in FIG. During the cooling operation, the refrigerant from an outdoor unit (not shown) circulates in the heat transfer tube 21 of the air cooler 2, and the motor 9 drives the blower 3. Then, the air guided from the suction port 7 into the casing 1 exchanges heat with the refrigerant flowing in the heat transfer tube 21 in the process of passing between the heat transfer tube 21 and the fin 22 of the air cooler 2. Is cooled by and the refrigerant evaporates and vaporizes. The cooled air is blown out of the casing 1 through the air outlet 8. During this cooling operation, water in the air is condensed on the surface of the air cooler 2 and forms a drain, which drops into the drain pan 4, is temporarily stored in the inside and then discharged to the outside.

When the outside air temperature is low, the drainage condensed on the surface of the air cooler 2 is frozen. When the air cooler 2 is covered with frost, the heat exchange capacity of the air cooler 2 is reduced, so that the defrosting operation is performed. During the defrosting operation, high temperature refrigerant gas is passed through the heat transfer tube 21 and the hot gas pipe 5 of the air cooler 2 to melt and remove the frost adhering to the air cooler 2 and the drain pan 4.

[0004]

[Problems to be solved by the device]

 In the above conventional air cooling unit, the hot gas pipe 5 is bent in a meandering shape and is fixed to the bottom surface of the drain pan 4 by the holding member 6, so that the manufacturing cost and the number of assembling steps are increased, and the air cooling unit is not used. This was an obstacle to making the cooling unit 10 thinner.

[0005]

[Means for Solving the Problems]

 The present invention has been proposed to solve the above problems, and its gist is to provide a futon-tube type air cooler in which the refrigerant evaporates during cooling operation and hot gas flows during defrosting operation. In the air cooling unit having a drain pan for receiving the drain dropped from the cooler, the lower surface of the cooler is arranged in close contact with the bottom of the drain pan.

[0006]

[Action]

 Since the present invention has the above-described configuration, the hot air is cooled by flowing hot gas through the air cooler during the defrosting operation, and at the same time, the drain pan is heated through the lower surface of the air cooler. As a result, the frost adhering to the air cooler and the drain pan is melted and removed.

[0007]

【Example】

 One embodiment of the present invention is shown in FIG. As shown in FIG. 1, the air cooler 2 is arranged so that its lower surface is in close contact with the bottom surface of the drain pan 4. In order to effectively heat the drain pan 4, it is preferable that the contact area between the air cooler 2 and the drain pan 4 is large. Other configurations are similar to those of the conventional one shown in FIG. 2, and corresponding members are designated by the same reference numerals.

When hot gas, that is, high-temperature refrigerant gas, flows through the heat transfer tube 21 of the space cooler 2 during the defrosting operation, the heat transfer tube 21 and the fin 22 of the air cooler 2 are heated. At the same time, the drain pan 4 is heated through the lower surface of the air cooler 2. This melts and removes the frost adhering to the air cooler 2 and the drain pan 4. Thus, it is not necessary to lay a dedicated hot gas pipe 5 for heating the drain pan 4 as in the conventional case, so that the cost thereof can be reduced and the height of the air cooling unit 10 can be shortened and thinned. .

[0009]

[Effect of the device]

 In the present invention, since the lower surface of the air cooler is arranged in close contact with the bottom of the drain pan, the drain pan is heated through the lower surface of the air cooler during the defrosting operation. Therefore, it is not necessary to lay a dedicated hot gas pipe in the drain pan, which can reduce the equipment cost and make the air cooling unit thin.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 shows a conventional air cooling unit, (A) is a side sectional view, (B) is a view taken along the line BB of (A), and (C) is an air cooler. It is a partially expanded view.

[Explanation of symbols]

 10 Air cooling unit 1 Casing 2 Air cooler 3 Blower 4 Drain pan

Claims (1)

[Claims for utility model registration] [Claim 1] A fin tube type air cooler in which the refrigerant evaporates during the cooling operation and hot gas flows through during the defrosting operation, and a drain pan for receiving the drain dropped from the cooler. In the air cooling unit, the air cooling unit is characterized in that the lower surface of the cooler is disposed in close contact with the bottom of the drain pan.