JP2523303Y2 - Forced drainage mechanism - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for forcibly draining water remaining in a pump after drainage in an air conditioner.

[0002]

2. Description of the Related Art As shown in FIG. 4, for example, a conventional air conditioner includes an air fan 4 that draws air in a room 2 through a dust filter 3, and a spray cooler 5 connected to the air fan 4. A pump 7 disposed below the spray cooler 5,
Spray pipe 8 connected to cooling pump 5 and spray pipe 8 connected to pump 5 and having a plurality of spray ports 9 on its peripheral surface. It comprises a vessel 10 and a drain valve 11 provided at the bottom of the liquid storage tank 6. The gas-liquid separator 10 is connected to the room 2.

Next, the operation of the air conditioner 1 will be described. The air conditioner 1 shown in FIG.
The air saturated with moisture at a low temperature is sent to the air, and the room temperature is controlled by the air saturated with the low temperature and humidity. The air in the room 2 is taken in by the outdoor air fan 4 via the dust collection filter 3 and sent to the spray cooler 5. On the other hand, the water in the liquid storage tank 6 is supplied to the spray pipe 8 by the liquid pump 7 and sprayed into the container from a number of spray ports 9 provided on the peripheral surface of the spray pipe 8 in an atomized state. It comes into direct gas-liquid contact with the air supplied by the air fan 4. At this time, heat exchange is performed for a relatively long time between the water that has become water droplets or fog and the air that comes into contact with the water, so that the air in the vessel is cooled to a temperature substantially equal to the water temperature. Then, the air that has become saturated with humidity at the same temperature as the water temperature is returned to the room 2 via the gas-liquid separator 10 provided adjacent to the spray cooler 5. The gas-liquid separator 10 performs centrifugal separation of foreign matters such as splashes contained in the cooled air, and at this time, returns excess dewatered water droplets to the storage tank 6. For this reason, the dewatered excess water is pumped up again by the pump 7 and is sent into the spray cooler 5 through the spray pipe 8.

[0004]

However, when the operation of the air device 1 is to be stopped for a long time, the drain valve 11 is opened to drain the water accumulated in the liquid storage tank 6. Due to the structure of the pump 7, water always remains at the bottom of the liquid pump 7. When left in this state for a long time,
There is a problem that the water is spoiled and the good air conditioning effect in the room is lost when the operation is resumed.

Therefore, an object of the present invention is to provide a forced drainage mechanism that can reliably remove liquid remaining in a liquid pump with a simple configuration.

[0006]

Therefore, in order to achieve the above-mentioned object, the present invention is provided with a branch valve for branching air sent from an air fan to a spray cooler and a spray pipe.

[0007]

FIG. 3 and FIG. 1 show an embodiment of the present invention.
This will be described with reference to FIG.

FIG. 3 shows an embodiment of an air conditioner to which the forced drainage mechanism of the present invention is applied, and shows an operation state.
Indicates a forced drainage state. The air conditioner 12 shown in FIGS. 3 and 1 is configured by disposing a branch valve 13 between the air fan 4 and the spray cooler 5. As shown in FIG. 3, in the operating state, the branch valve 13 is opened to the spray cooler 5 side, and the air in the room 2 is sucked into the air fan 4 via the dust collection filter 3 and sent to the spray cooler 5. Further, the water pumped by the pump 7 does not flow from the branch valve 13,
A spray is sprayed into the vessel from a spray port 9 provided in a spray pipe.

As shown in FIG. 1, in the forced drainage state, the branch valve 13 is opened to the spray pipe 8 side, and the air sent from the air fan 4 passes through the spray pipe 8 and is sent to the pump 7 for pumping. The water remaining in the liquid pump 7 is pushed out to the liquid storage tank 6.

[0010]

[Effects of the Invention] As described above, according to the present invention,
By forcibly sending the air from the air fan to the pump by switching the branch valve, water remaining in the pump can be eliminated. This has the effect of preventing water from spoiling when the air conditioner is left for a long time.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an operating state in an embodiment of an air conditioner to which a forced drainage mechanism of the present invention is applied.

FIG. 2 is a schematic configuration diagram showing a state after drainage of a conventional air conditioner.

FIG. 3 is a schematic configuration diagram showing an operation state of the embodiment of the air conditioner to which the forced drainage mechanism of the present invention is applied.

FIG. 4 is a schematic configuration diagram showing an operation state of a conventional air conditioner.

[Explanation of symbols]

 2 Indoor 3 Dust collection filter 4 Air fan 5 Spray cooler 6 Liquid storage tank 7 Pump pump 8 Spray pipe 9 Spray port 10 Gas-liquid separator 11 Drain valve 12 Air conditioner 13 Branch valve

Claims (1)

(57) [Scope of request for utility model registration] 1. A liquid storage tank, a spray pipe standing upright on the liquid storage tank and having a plurality of spray ports on a peripheral surface, and pumping liquid in the liquid storage tank;
A pump for supplying the spray pipe, a spray cooler surrounding the spray pipe, an air fan for sending air to the spray cooler, and a branch valve arranged between the air fan and the spray cooler. A forced drainage mechanism characterized in that air is supplied to a liquid pump through a spray pipe by switching the branch valve.