JP3996487B2 - Drain water evaporator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drain water evaporation apparatus for evaporating and treating drain water (drainage) discharged from a cooling device for a sealed casing that mainly stores a control panel, OA equipment, and the like.
[0002]
[Prior art and its problems]
2. Description of the Related Art Conventionally, a cooling device that cools the periphery of a refrigerant evaporator by circulating the refrigerant by pumping the refrigerant from the refrigerant evaporator to a radiator via a conduit by a compressor is known. In this type of cooling device, the air around the refrigerant evaporator is condensed, so that it is necessary to drain the condensed water. However, since the control panel is usually installed indoors, unlike a home-use cooler, plumbing work becomes significant when a drain pipe is provided and drained to the outside.
[0003]
Thus, a small cooling device employs a method of evaporating drain water using waste heat of the refrigerant evaporator. However, such a method cannot perform wastewater treatment of a large cooling device in a capacitive manner. . For example, a large cooling device requires a waste water treatment of 1 liter or more per hour.
[0004]
As a method for improving the wastewater treatment capacity, the applicant has applied for the invention of Patent Document 1 below.
[Patent Document 1]
Japanese Patent Laid-Open No. 10-73365 FIG.
[0005]
In the invention of Patent Document 1, a flip-up machine for splashing drain water is provided, and the drain water is splashed toward the electric heating rod. Since the flip-up device splashes drain water with a motor, the motor is submerged or water is submerged from the shaft of the flip-up device, which causes a failure.
Further, if the warm air containing moisture is not sufficiently heated, dew condensation occurs at the location exhausted from the exhaust port.
[0006]
Accordingly, an object of the present invention is to provide a drain water evaporation apparatus that can continuously process a large amount of drain water, is less prone to failure, and is less likely to condense exhaust.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIG.
As shown in FIG. 1, the drain water evaporator includes an inner case (housing) 1 and an outer case 2. In the inner case 1, a drain receiver 10 and an evaporation chamber 11 are formed. On the other hand, the inner case 1 is accommodated in the outer case 2 and a slight heat insulating space S is formed between the two cases 1 and 2 to prevent the outer case 2 from becoming hot. is doing.
Above the evaporation chamber 11, a water conduit 3 for introducing drain water W into the inner case 1 is inserted.
[0008]
A first heater 21 is immersed in the drain receptacle 10, while a second heater 22 is disposed in the evaporation chamber 11. The evaporation chamber 11 has an intake port IN and an exhaust port OUT. A baffle plate 4 is provided in the vicinity of the downstream side of the intake port IN, and a blower 5 is provided in the vicinity of the upstream side of the exhaust port OUT.
The drain receiver 10 is formed in the lower part of the inner case 1. The first heater 21 is immersed in the drain receiver 10 and evaporates the drain water W. The evaporation chamber 11 is formed above the drain receiver 10 in the inner case 1. The second heater 22 raises the temperature of the air containing moisture in the evaporation chamber. The intake port IN allows air to flow into the evaporation chamber 11. The exhaust port OUT is for exhausting air from the inside of the evaporation chamber 11.
[0010]
The blower 5 introduces fresh air from the intake port IN and discharges warm air from the exhaust port OUT. The baffle plate 4 is provided at a position between the intake port IN and the exhaust port OUT, and prevents air from flowing linearly from the intake port IN toward the exhaust port OUT. Generate turbulence.
The baffle plate 4 is an inclined plate that is inclined with respect to a vertical plane. The baffle plate 4 is preferably fixed to the inner surface of the inner case 1 below the intake port IN and is inclined so as to be away from the intake port IN as it goes upward.
[0011]
Next, the mechanism by which the drain water W is processed will be described.
The drain water W introduced into the inner case 1 from the water conduit 3 is temporarily accumulated in the drain receiver 10. The drain water W collected in the drain receptacle 10 is heated by the first heater 21 and rises into the evaporation chamber 11 as water vapor. In the evaporation chamber 11, the water vapor itself is heated by the second heater 22 and refined.
[0012]
On the other hand, when the outside air A is introduced from the air inlet A by the operation of the blower 5, the outside air A is guided to the baffle plate 4 and flows slightly upward of the evaporation chamber 11 and hits the ceiling portion 12 of the inner case 1. As shown by the arrow B, a vortex that vortexes up and down is generated. At this time, the water vapor in the evaporation chamber 11 is contained in the air B, and the flow of the arrow B occurs in every corner of the evaporation chamber 11, and the outside air A sucked from the intake port IN is directly discharged from the exhaust port OUT. To prevent.
[0013]
On the other hand, the second heater 22 in the evaporation chamber 11 raises the temperature of the air B containing water vapor. Here, since the air B stays in the evaporation chamber 11 for a long time, the temperature rises sufficiently and the water vapor is further refined. The air B whose water vapor has been refined and whose temperature has been sufficiently raised eventually becomes exhaust C and is discharged from the exhaust port OUT.
[0014]
Here, since the temperature of the exhaust C is high and the water vapor is miniaturized, the exhaust C discharged from the exhaust port OUT is difficult to condense, so that a large amount of water droplets adhere to the outer surface of the outer case 2. There is nothing to do.
[0015]
By the way, it is preferable that the angle θ between the baffle plate 4 and the vertical plane is inclined at 30 ° to 60 °.
[0016]
An independent abnormally high heat cutoff circuit may be provided for each of the evaporation and heating heaters.
Also, in the unlikely event that water that cannot be vaporized is about to overflow from the main body, a dedicated water level sensor may detect the abnormality and immediately output an alarm to the outside.
Although the baffle plate 4 can be suspended from above, air stagnation occurs above the baffle plate 4. On the other hand, in the present embodiment, the baffle plate 4 is fixed below the intake port IN, so that the air B in the space below the baffle plate 4 can rise. Is unlikely to occur.
[0017]
【The invention's effect】
As described above, according to the present invention, the water vapor evaporated by the first heater is warmed by the second heater, and the baffle plate causes a recirculation in the air in the evaporation chamber, so that the water vapor particles are refined. . Therefore, there is no possibility of dew condensation even if the exhausted warm air has not increased as much as possible.
In addition, since there is no drive part that is submerged, failure is reduced and noise is reduced.
[0018]
In addition, if the inclined baffle plate is arranged below the intake port, air does not stagnate in the four corners of the evaporation chamber or in the space below the baffle plate, so that the space in the evaporation chamber can be used effectively. And processing capacity is improved.
[Brief description of the drawings]
FIG. 1 is a schematic sectional view showing an embodiment of the present invention.
[Explanation of symbols]
1: Inner case 3: Water guide pipe 4: Baffle plate 5: Blower 10: Drainage receptacle 11: Evaporating chamber 21: First heater 22: Second heater IN: Intake port OUT: Exhaust port

Claims (2)

In the drain water evaporator that evaporates the drain water introduced from the water conduit in the evaporation chamber by the heater and discharges the air containing moisture in the evaporation chamber by the blower.
A drain receiver formed in the lower part of the housing,
A first heater immersed in the drainage receiver for evaporating drain water;
An evaporation chamber formed above the drain receptacle in the housing;
A second heater disposed in the evaporation chamber for raising the temperature of the air containing moisture in the evaporation chamber;
An air inlet that allows air to flow into the evaporation chamber;
An exhaust port for exhausting air from the evaporation chamber;
A blower that introduces fresh air from the inlet and discharges warm air from the outlet;
Provided at a position in the evaporation chamber between the intake port and the exhaust port, prevents air from flowing linearly from the intake port toward the exhaust port, and prevents a turbulent flow in the evaporation chamber With a board ,
The blower is disposed in the vicinity of the front Symbol outlet, the baffle plate so as to face is provided on a part of the intake port in the vicinity of the intake port, wherein the baffles fixed to the housing at the lower of the intake port A drain water evaporation device that is provided in a posture inclined with respect to a vertical surface and is inclined so as to move away from the intake port as it goes upward. In claim 1 ,
A drain water evaporator in which the baffle plate is provided so that the inclined baffle plate and the vertical plane form an angle of approximately 30 ° to 60 °.

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