JPH0741325U - Suction drain forced discharge device in air conditioner - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a suction drain forced discharge device that can be continuously used for a long time without causing clogging of the strainer due to dust or the like. [Structure] A drain discharge trunk in which a drain discharge branch pipe 2 for drain discharge in a drain pan 14 arranged below a cooling machine 1 installed on each floor of a building X, etc. is connected to a suction machine. In the suction type drain forced discharge device connected to the pipe 3, the drain discharge branch pipe 2 connected to the drain discharge main pipe 3 has a strainer 24 at the middle portion.
A drain suction port 20 having an inverted funnel shape so that the drain suction port 20 can be placed on the drain tray 14, and a valve 25 provided with an opening / closing valve section in the pipe section above the drain suction port 20. Is a solenoid valve or a transmission valve that is operated for a required time by a switch 27 that is closed by a float 26 that is floated by the drain in the drain pan 14.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a suction type drain forced discharge device installed in a building.

[0002]

[Prior art]

 As is well known, as a drainage system for drains generated by air conditioners installed on each floor of a building, etc., a forward gradient system that normally uses gravity is adopted. However, it is necessary to increase the distance between the structural floor and the ceiling on each floor, or the space between the floor and the structural floor.

Therefore, as one means for avoiding the difficulties and drawbacks of the forward gradient method, as shown in FIG. 4, a drain tray 30 is arranged below an air conditioner installed on each floor of a building, The drain accumulated in the drain tray 30 is caused to flow into the trap 31 connected to the bottom plate of the drain tray 30 via the strainer 35, whereby the float 32 in the trap 31 is floated and the discharge port 33 is opened, and the drain is always opened. A drain pipe 34 for drain discharge connected to a suction device such as a vacuum pump discharges the water. When the drain in the trap 31 disappears, the float 32 sinks and the discharge port 33 is closed. We have developed a suction-type forced discharge device, which should be called a system (see Jpn.

[0004]

[Problems to be solved by the device]

 When the suction type forced drainage device is used, it is possible to avoid the drawbacks and disadvantages of the forward gradient method, but since the trap 31 is connected to the bottom plate of the drain tray 30, sand, etc. mixed in with the drain can be avoided. Since the dust of the strainer causes the strainer 35 to be clogged, there is a disadvantage that it cannot be used for a long time.

In view of such inconvenience, an object of the present invention is to provide a suction type drain forced discharge device that can be continuously used for a long time without causing a strainer to be clogged with dust or the like.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the suction type drain forced discharge device of the present invention has a drain discharge branch pipe for drain discharge in a drain pan disposed below an air conditioner installed on each floor of a building. In the suction-type drain forced discharge device that is connected to the drain discharge trunk pipe that is connected to the suction machine, the tip end of the drain discharge branch pipe that is connected to the drain discharge trunk pipe is A valve equipped with a strainer and having a drain suction port in the shape of an inverted funnel so that it can be placed on the drain tray, and a valve provided with an opening / closing valve section in the pipe section above the drain suction port is It is characterized in that it is a solenoid valve or a transmission valve that is operated for a required time by a switch closed by a float floated by the drain in the drain tray.

[0007]

[Action]

 When the float is floated to a predetermined height by the drain accumulated in the drain pan, the solenoid valve or transmission valve that is operated for the required time by the switch closed by this float operates and the drain discharges. The on-off valve installed in the pipe above the inverted funnel-shaped drain suction port at the end of the branch pipe is opened and this state is maintained for a while.

Then, the drain accumulated in the drain pan is sucked up from the suction port of the drain discharge branch pipe formed in the shape of an inverted funnel so that the drain pan can be placed on the drain pan, and is drained from the bottom plate of the drain pan. The dust is removed by a strainer that is installed above and does not accumulate dust, and is sucked through the drain discharge branch pipe to the drain discharge main pipe connected to the suction device. Becomes

Then, after the required time, the solenoid valve or the transmission valve stops operating, the on-off valve portion returns to the closed state, and the drain discharge branch pipe is closed.

[0010]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In the figure, 1, ... Show the cooling machines installed on the respective floors n, ... of the high-rise building X, and the drain discharge branch pipes 2, ... Are drawn from the cooling machines 1 ,. , The drain discharge branch pipes 2, ... Are connected to one drain discharge trunk pipe 3, the stem pipe 3 is directly connected to a closed drain collection tank 4, and is drawn out from the upper end of the drain collection tank 4. The exhaust pipe 5 is led to a vacuum pump 6 having an exhaust pipe 7, while a drain waste pipe 8 is drawn out from the lower end of the drain collection tank 4.

By the way, the vacuum pump 6 is operated by a pressure detection sensor (not shown) which detects the upper and lower pressures in the drain collection tank 4 which are set in advance. The drain waste pipe 8 is operated under pressure, and the drain waste pipe 8 is operated by a water level sensor (not shown) that detects the upper and lower water levels of the drain collected in the drain collection tank 4. 9 is inserted.

As shown in FIG. 2, each of the air conditioners 1 has a blower 11 and a cold water pipe 12 arranged in a case 10 so that the air from the blower 11 is cooled to open the case 10. The one that is sent from the part 13 to the room is generally used, and the condensed water adhering to the outer surface of the cold water pipe 12 is collected in the respective drain pans 14 arranged below the cold water pipe 12. Has become.

As shown in FIG. 3, the tip ends of the drain discharge branch pipes 2 constructed according to the present invention are placed on the respective drain trays 14 in an inverted manner.

The tip end of each drain discharge branch pipe 2 has an inverted funnel shape, and a drain suction notch 21, ... Is provided on the lower edge of the drain discharge branch pipe 2. The strainer locking device 23 mounted in the provided annular strainer locking device mounting recess 22 serves as the drain suction port 20 in which the strainer 24 is fixed, and the opening / closing valve section is provided in the pipe above the drain suction port 20. A valve 25 equipped with (not shown) is a solenoid valve that is operated for a required time by a switch 27 having a hysteresis characteristic that is closed by a float 26 that is floated by the drain in the drain pan 14 described above. Or it is made as a transmission valve. Reference numeral 28 in the figure denotes a support body that holds the switch 27 and that also serves as a vertical movement guide of the float 26 and whose fixed position can be adjusted.

Since the suction type drain forced discharge device in the air conditioner according to the present invention is configured as described above, if the vacuum pump 6 is put into an operating state and the individual air conditioners 1 are operated, the The drains are respectively collected in the drain pans 14 arranged in the above.

Then, the drain accumulated in each drain receiving tray 14 causes the float 26 to float and the switch 27 to be closed separately. Each of the closed switches 27 operates the valve 25 provided with the switch 27, and opens and closes the opening / closing valve portion mounted inside the pipe of the drain discharge branch pipe 2 for a required time. In this state, the drain is forcibly sucked from the inverted funnel-shaped drain suction port 20 into the drain discharge branch pipe 2 while removing dust such as sand by the strainer 24, and the drain discharge trunk is formed. Drain collected in the pipe 3 and collected in the drain collection tank 4 is drained in the drain waste pipe 8 while drain collected in the tank 4 is drained in the drain pan 14 by this suction. After the required time has elapsed, the on-off valve will close.

The above-mentioned operation is repeated for each air conditioner 1, but since the drain is sucked up from under the strainer 24, unlike the conventional strainer, dust such as sand adheres to the strainer 24. However, continuous long-term operation became possible as it was returned to the drain.

[0019]

[Effect of device]

 As is clear from the above description, according to the present invention, even if some dust such as sand is mixed in the drain generated by the air conditioner, it is accumulated in the strainer for filtering the dust or the dust is accumulated. It became possible to provide a suction-type drain forced discharge device that can be used continuously for a long time without any clogging.

[Brief description of drawings]

FIG. 1 is a partial schematic view for explaining a building in which an embodiment of a suction type drain forced discharge device in a cooling machine according to the present invention is installed.

FIG. 2 is a schematic view showing an example of a cooling machine provided with an embodiment of a drain discharge pipe of a suction type drain forced discharge device in a cooling machine according to the present invention.

FIG. 3 is a schematic view for explaining a main part of one embodiment of a suction type drain forced discharge device in a cooling machine according to the present invention.

FIG. 4 is a schematic diagram for explaining an example of a suction type drain forced discharge device in a conventional air conditioner.

[Explanation of symbols]

 X Building n Each floor 1 Air conditioner 2 Drain discharge branch pipe 3 Drain discharge main pipe 4 Drain collection tank 5, 7 Exhaust pipe 6 Vacuum pump 8 Drain waste pipe 9 Drain waste pump 10 Case 11 Blower 12 Cold water pipe 13 Opening 14 Drain pan 20 Drain suction port 21 Drain suction notch 22 Strainer locking tool mounting recess 23 Strainer locking tool 24 Strainer 25 Valve 26 Float 27 Switch 28 Support

Claims (1)

[Scope of utility model registration request] 1. A drain discharge branch pipe for drain discharge in a drain pan disposed below a cooling machine installed on each floor of a building is connected to a drain discharge main pipe connected to a suction machine. In the suction-type drain forced discharge device that is at most, the tip of the drain discharge branch pipe connected to the drain discharge main pipe has a strainer attached to the middle portion,
A valve having an inverted funnel-shaped drain suction port so that it can be placed on the drain tray, and a valve having an opening / closing valve section mounted in the pipe section above the drain suction port is floated by the drain in the drain tray. A suction drain forced-discharging device characterized in that it is a solenoid valve or a transmission valve that can be operated for a required time by a switch that is closed by a floating float.