JP4511228B2 - Drain water seal device - Google Patents

Description

  More particularly, the present invention relates to a drain water seal device that drains drain water in an air conditioner.

  In general, air conditioners are installed in factories, buildings, underground malls, etc. to clean air and manage temperature and humidity. Inside the air conditioner, an air filter, a heat exchanger (cooling coil), and a blower (fan) are provided. Considering the efficiency of air movement as a fluid, as shown in FIG. An air filter 41, a heat exchanger 42, and a blower 43 are provided in this order along the flow direction. In such an air conditioner 40, the air that has flowed into the air conditioner 40 via the blower duct 44 is purified by the air filter 41, cooled or heated by the heat exchanger 42, and further blown by the blower 43. It is sent out to the duct 45.

  In the air conditioner 40 performing the cooling operation, water vapor in the air is cooled at the outer peripheral portion of the heat exchanger 42 to cause condensation. Drain water (also referred to as dew condensation water) generated by this dew condensation is received by a dish-shaped drain pan 46 provided on the lower side of the heat exchanger 42 of the air conditioner 40.

  In general, a drain drain pipe 47 is connected to the drain pan 46, and drain water accumulated in the drain pan 46 to some extent can flow down naturally and be discharged to the outdoors through the drain drain pipe 47.

  However, as shown in FIG. 4, when the blower 43 is provided on the downstream side of the heat exchanger 42, the air conditioner 40 has a negative pressure during operation and is attached to the drain pan 46 below the heat exchanger 42. In addition, there is a drawback that outside dirty air, dust or the like enters the air conditioner 40 through the drain drain pipe 47. In addition, the air flowing backward from the drain drain pipe 47 winds up the drain water in the drain pan 46 and the drain water is scattered, and as a result, the drain water may be sucked into the blower 43.

  Therefore, as a countermeasure, a U-shaped water-sealed trap 50 as shown in FIG. 5 is provided in the middle of the drain drain pipe 47, and the weight of the drain water accumulated in the water-sealed trap 50 rather than the negative pressure in the air conditioner. It is known that the above-mentioned drawbacks are eliminated by setting the water seal depth H so that the value of the And if the drain water of a U-shaped part accumulates more than fixed, it will be discharged | emitted through the drain drain pipe connected to the exit of the water seal trap 50 in the form of overflow.

  In addition, a U-shaped water-sealed trap is attached to the drain pan, a ball-type check valve having a ball that is movable in the vertical direction is provided at the tip of the water-sealed trap, and the water-sealed trap and ball-type check valve are provided in the secondary water tank. A water-sealed trap with a configuration housed inside has also been proposed. In the water-sealed trap of this configuration, the ball moves up and down, so that the drain water can be discharged during the cooling operation of the air conditioner. Further, during the heating operation, the drain water stays in the water-sealed trap and becomes contaminated outside. Air or dust can be prevented from entering the aircraft.

  However, such a drain drain pipe with a water seal trap has a small amount of drain water from the air conditioner, or if the air conditioner has been stopped for a long time, Water may remain, garbage may accumulate, bacteria may be generated and become rotten and gelled, and the drainage pipe may be clogged. When the drain drain pipe is clogged in this way, it becomes difficult to drain the drain water or to clean the inside of the drain drain pipe, and it is very troublesome to disassemble the drain drain pipe for cleaning. Furthermore, the drain water evaporates during the heating season, and the original function of the water seal trap is lost.

  In addition to a water-sealed trap, a ball check valve or the like has a complicated mechanism. Similarly, if bacteria are generated in the water-sealed trap and the water-sealed trap is clogged, further cleaning is required. It had the problem of being difficult.

Japanese Patent Publication No. 2002-174398 Japanese Patent Publication No. 10-300117

  The present invention has been made in order to solve the above-described problems. The purpose of the present invention is to prevent the drain drain pipe from being clogged, and to ensure a water seal if necessary. An extremely simple drain water sealing device is provided.

In order to achieve the above object, the drain water sealing device of the present invention is configured such that drain water in an air conditioner is discharged through a drain drain pipe, and the inside of the drain discharge pipe is sealed with water containing the drain water. in drain water sealing device for cutting off from the drain water discharge pipe is a straight pipe, the bottom surface is a downward convex shape, the water water seal process is performed to cut off the by submerged the open end of the drain water discharge pipe from the atmosphere and sealing tank provided on the side wall of the water seal chamber, a drainage path for guiding the drain water to the outside, provided at the bottom of the water seal chamber, a discharge valve for discharging the sediment of the water sealing tank, and an automatic water supply means by a ball tap valve for preventing the drawdown of the water seal of the water seal tank, water is supplied to the drain water discharge pipe the water sealing bath is blown Rohm by the automatic water supply means The discharge valve is the automatic In conjunction with water means operates, it characterized that you discharge the deposit of the water seal bath.

  Moreover, it is preferable that the water supply by the automatic water supply means is sterilized water. This will contribute to cleaning the drain drain pipe.

  By submerging the open end of the drain drain pipe in the drain water sealed tank where water is stored, it is not necessary to provide a U-shaped water seal trap in the middle of the drain drain pipe, and the drain drain pipe should be used as a straight pipe Therefore, the drain drain pipe can be prevented from being clogged. In addition, the drain water seal device having a simple structure facilitates cleaning. Furthermore, by providing an automatic water supply means using a ball tap valve, it is possible to secure a water seal as needed and contribute to cleaning the drain drain pipe.

  For example, even when dehumidification is not required and there is little drain water, or when the air is dry and the water in the water sealing tank evaporates and the water level drops, it is easy to restore the water level and ensure water sealing. .

Hereinafter, embodiments to which the present invention can be applied will be described. The following description explains the embodiment of the present invention, and the present invention is not limited to the following embodiment. For clarity of explanation, the following description is omitted and simplified as appropriate. In addition, what attached | subjected the same code | symbol in each figure has shown the same element, and abbreviate | omits description suitably.

  A drain water sealing device according to the present embodiment will be described with reference to FIG. FIG. 1 is a cross-sectional view showing a configuration of a drain water sealing device according to the present embodiment.

The drain water sealing device 10 includes a drain water sealing tank 11, a drain drain pipe 12, a drain channel 13, a lid 14, a ball tap valve 15 that is an automatic water supply means, and a drain valve 19.

  The outer shape of the drain water sealing tank 11 is preferably a cylindrical or square bowl shape with a simple structure. The open end 12a of the drain drain pipe 12 connected to the drain van of the air conditioner is drawn into the drain water sealing tank 11 and submerged in water containing drain water staying in the drain water sealing tank 11 to ensure water sealing. The

  The required size of the drain water sealing tank 11 varies depending on the amount of drain water, but in the case of a square bowl shape, it may have a size of about 300 mm in length, 300 in width, and about 300 mm in height. For example, the amount of drain water in a large air conditioner is 20 liters / h at the maximum, and in a small air conditioner, it is about 2-3 liters / h.

  As the material of the drain water sealing tank 11, a vinyl chloride material, FRP (Fiber Reinforced Plastics), or the like can be used.

  The bypass drainage channel 13 is provided on the side wall of the drain water sealing tank 11, and the position thereof is a position where the drain water sealing depth H can be secured on the upper side from the opening end 12 a of the drain drain pipe 12 as shown in FIG. 1. I just need it. The shape of the bypass drainage channel 13 is preferably an open-type groove or a bowl shape because it facilitates cleaning. In the case of a straight pipe having a pipe length of about several meters and a certain degree of inclination and pipe diameter, a cylindrical one can be used.

  The ball tap valve 15 is configured to automatically supply water when the water level of the drain water in the drain water sealing tank 11 is lowered. The ball tap valve 15 mainly includes a float 16 and a water stop valve 17 and is attached to a water supply pipe. . The float 16 is disposed so as to float in the water stored in the drain water sealing tank 11, and the open / close degree of the water stop valve connected to the float 16 is automatically adjusted according to the float position of the float 16, and the amount of water supplied by the water supply pipe is reduced. Adjusted.

  Therefore, when the water level of the water seal in the drain water seal tank 11 is lowered and the water seal depth H cannot be maintained, the water stop cock 17 is automatically opened to supply water, and when the water level rises, the water stop cock 17 is automatically supplied. Can be closed.

  Further, the water supply from the water supply pipe 18 is blown through the drain drain pipe. As an example, as shown in FIGS. 2 and 3, the water supply port 18 a of the water supply pipe 18 is extended into the air conditioner, and is drawn into the drain drain pipe 12 from the connection portion between the drain pan 46 and the drain drain pipe 12. At this time, the water supply port 18a of the water supply pipe 18 is preferably installed so as to face the direction of drainage at a position where the water supply port 18a is lowered by a distance (about 10 cm) that is not affected by the negative pressure of the air conditioner. This is because the water supplied from the water supply port can be prevented from flowing back and scattering.

  Furthermore, by using sterilized water as water supply by the automatic water supply means and blowing water through the drain drain pipe, it is possible to clean the drain drain pipe and supply water into the drain water sealed tank.

  The blow-through water in the drain drain pipe is performed by the water supplied from the water pipe to which the ball tap valve is attached by the operation of the ball tap valve provided in the drain water seal device, but linked to the movement of the ball tap valve in another water pipe. Then, an electromagnetic valve that opens and closes may be provided, and a certain amount of sterilized water may be blown through the drain drain pipe through another water supply pipe. Even if the amount of water supplied from the water supply pipe to which the ball tap valve is attached is small, a certain amount of water required for blow-through water can be passed through the drain drain pipe.

  Further, the drain water sealing tank 11 has a bottom convex shape with an inclined bottom surface, and a discharge valve 19 is provided at the bottom. The discharge valve 19 is opened and closed in conjunction with the ball tap valve 15.

  If there is any stagnation in the water-sealed water storage in the drain water-sealed tank 11, the water may rot and become a gel or foreign substances may accumulate due to the generation of viable bacteria. For this reason, the bottom surface of the drain water sealing tank 11 has an inclined downward convex shape, and deposits such as foreign substances are easily collected on the bottom. And the deposit in the drain water sealing tank can be discharged by opening and closing the discharge valve 19 provided at the bottom of the drain water sealing tank 11 in conjunction with the ball tap valve 15 which is an automatic water supply means, and the water sealing. It is possible to supply the necessary water.

  By using the drain water sealing device as described above, the drain water distribution pipe can be prevented from being clogged, and the inside of the drain water sealing device can be saved. Moreover, regular cleaning becomes easy by using a drain water sealing device with a simple structure. Furthermore, even when there is little drain water or when the air is dry and the water in the water-sealed tank evaporates and the water level drops, the water seal can be secured as necessary and the water seal function is impaired. There is no.

It is typical sectional drawing of the drain water sealing apparatus concerning implementation of this invention. Schematic of connecting drain water seal device shown in FIG. 1 with an air conditioner It is typical sectional drawing which showed an example of the water supply means of the drain water sealing apparatus shown in FIG. It is the figure which showed the internal structure of the air conditioner. It is the figure which showed the prior art.

Explanation of symbols

10 drain water sealing device, 11 drain water sealing tank, 12 drain drain pipe, 13 drainage channel,
14 lid, 15 ball tap valve, 18 water supply pipe, 19 drain valve,
40 air conditioner, 41 air filter, 42 heat exchanger, 43 blower,
44 air duct, 46 drain pan, 50 water seal trap

Claims (2)

The drain water in the air conditioner is discharged through the drain drain pipe,
In the drain water sealing device that seals the inside of the drain discharge pipe with water containing the drain water, and shuts off from the atmosphere,
The drain drain pipe is a straight pipe,
A water-sealed tank having a bottom-convex bottom surface and a water-sealing treatment in which the drain end of the drainage pipe is submerged and cut off from the atmosphere;
Provided on the side wall of the water seal chamber, a drainage path for guiding the drain water to the outside,
A discharge valve provided at the bottom of the water-sealed tank, for discharging deposits in the water-sealed tank;
An automatic water supply means by a ball tap valve for preventing a water level drop of the water seal of the water sealing tank,
The water supply by the automatic water supply means is supplied to the drain water discharge pipe the water sealing bath is blown Rohm, said discharge valve operates in conjunction with the automatic water supply means, the deposit of the water seal bath discharged to drain water sealing device according to claim Rukoto. The drain water seal device according to claim 1, wherein water supplied by the automatic water supply means is sterilized water.