JPH0440108Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a drain processing device used in air conditioners, prefabricated refrigerators, etc.

(b) Prior Art Publication of Utility Model Publication No. 36-9351 discloses an air conditioner in which a part of the discharge pipe of a compressor is provided in a drain pan, and the drain in the drain pan is heated by the discharge pipe. .

(c) Problems to be solved by the invention In the conventional device, the position of the drainage port of the drain pan was set relatively high, and a large amount of drain was collected in the drain pan. This is to ensure that the heating pipe such as the above-mentioned discharge pipe is immersed in the drain to reliably heat the drain.

Therefore, even if the cooling operation is stopped, the drain pan remains filled with drain, resulting in the problem that the drain pan becomes dirty or rusts.

The present invention provides a drain treatment device that solves these problems.

(d) Means for solving the problem The present invention is equipped with a dam that temporarily blocks the drain generated in the cooler in a drain pan, and a heater that heats the drain blocked by the dam. This is designed to form a drain relief part that allows a part of the drain to escape to the drain port of the drain pan.

(e) Effect Drain generated in the cooler is dammed up in the drain pan with a dam, and is heated by contact with the heating pipe. Therefore, since the drain discharged from the drain port of the drain pan through the drain pipe is heated, dew does not adhere to the outer periphery of the drain pipe, and therefore there is no need to cover the outer periphery of the drain pipe with a heat insulating material.

Furthermore, when the cooling operation is stopped, the drain that has been dammed up in the drain pan gradually flows out from the relief part of the drain damming device to the drain port and is completely discharged from the drain pan.

(F) Example As an example of this proposal, a ceiling-mounted air conditioner will be explained. In FIG. 1, 1 is the main body of the air conditioner, and a compressor 3 placed on the bottom plate 2.
, a water-cooled double pipe condenser 4, and a cooler 5
It has a built-in drain pan 6 to receive the drain generated by this cooler, and a blower 7, and is installed behind the ceiling 10 by fixing the bottom plate 2 to a hanging fixture 9 suspended from a ceiling beam 8. It's starting to become easier.

11 is a suction duct that leads indoor air to the cooler 5;
Reference numeral 12 designates a blow-off duct that guides indoor air cooled by the cooler 5 and sent out by the blower 7 into the room, and 13 designates a drain pipe that guides drain discharged from the drain port 14 of the drain pan 6 to the outside.

Reference numeral 15 denotes a discharge pipe of the compressor 3, which is connected to the heating pipe 16 shown in FIG. The refrigerant is circulated through a pressure reducing element (not shown), cooler 5, and compressor 3 to form a cooling cycle.

Reference numeral 19 denotes a rubber drain stopper for positioning the heating pipe 16 inside the drain pan 6, and as shown in FIG.
2 and a drain relief part 23 cut out at two corners of the lower surface, and is fitted into the stepped part 24 of the drain pan 6 to prevent it from floating upward as shown in FIGS. 4 and 5. Cooler 5 fins 25
regulated by.

In FIG. 2, the drain pan 6 is installed so as to be inclined downward from the right side to the left side where the drain port 14 is located.

The system is configured as described above, and the cooling operation is performed in which the compressor 3 is operated, the discharged refrigerant is cooled and condensed with water passing through the condenser 4, and then evaporated in the cooler 5 to cool the indoor air. When this is done, drainage will be generated in the cooler 5, and this drainage water will flow down into the stepped portion 24 of the drain pan 6. The drain that has flowed down gradually flows out to the drain port 14 side by the relief part 23, but is blocked by the dam 19 and the water level a rises higher than the water level b, so that the lower half of the heating pipe 16 becomes the drain. The drain is heated by contact. Then, the warmed drain gradually flows out from the relief part 23 to the drain port 14 side and is discharged from the drain pipe 13.
Even if the drain pipe 13 is not covered with a heat insulating material, dew will not adhere to the outer surface of the drain pipe 13.

Furthermore, when the amount of drain generated in the cooler 5 increases and reaches the water level c, it will overflow from the hole 22 of the dam 19 and flow out to the drain port 14 side, so there is no risk of the drain overflowing from the drain pan 6. .

Further, when the cooling operation is stopped, the drain held up in the drain pan 6 gradually flows out from the relief part 23 of the dam 19 toward the drain port 14 and is completely discharged from the drain pan 6.

Note that, unlike the above embodiment, the cooler 5 may be a heat exchanger through which cold water passes, and the heating pipe 16 may have an electric heater built therein.

(g) Effects of the invention According to this invention, the drain is dammed up with a dam inside the drain pan and the heating pipe and the drain are brought into contact with each other, so that the drain can be reliably heated by the heating pipe. Dew does not adhere to the outer periphery of the drain pipe connected to the drain outlet, making it unnecessary to perform insulation work to cover the drain pipe with a heat insulating material.

Moreover, when the air conditioning (cooling) operation is stopped, the drain that was blocked in the drain pan gradually flows out from the relief part of the dam to the drain port and is completely discharged from the drain pan, preventing the drain pan from getting dirty or rusting. This can be prevented.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a vertical cross-sectional view of a ceiling-embedded air conditioner, and Fig. 2 is a plan view of a drain processing device showing the main parts of the ceiling-embedded air conditioner. Figure 3 is a perspective view of the drain stopper;
The figure is a sectional view of the main part of the drain treatment equipment, and Figure 5 is the 4th section.
FIG. 2 is a sectional view of the drain processing device taken along line VV' in the figure. 5...Cooler, 6...Drain pan, 14...Drain port, 16...Heating pipe, 19...Drain dam, 23...Drain relief part.

Claims (1)

[Scope of utility model registration request] The drain pan is equipped with a drain dam for damming the drain pan, and a heating pipe for heating the drain blocked by the dam, and the dam has a relief part that allows part of the drain to escape to the drain port of the drain pan. A drain processing device characterized by: