JPH05105375A - Cooling drainage system for elevator - Google Patents

Abstract

PURPOSE:To provide an elevator cooling drainage system capable of starting a drainage pump to drain easily inside a cage even during the operation of an elevator by providing a drain tank having the drain level sensor of a cooling unit, under the cage, and providing the drain tank with the drainage pump and a drain pipe connected to a faucet in the cage. CONSTITUTION:When a cooling unit 2 provided at the upper part of a cage is operated, drain water coming out of a heat exchanger is accumulated in a drain tank 6 and becomes full with the time. Then an upper float switch 7 closes a circuit, and the lamp 21 of a monitoring panel fitted outside is lighted. At the same time, a buzzer 22 rumbles to inform a controller of the full state of the drain tank 6. Upon the indication of the full state, a motor-driven pump start switch 20 provided at the control panel in the cage is closed to charge an electromagnetic switch so that a drainage pump 18 is rotated to pump up water in the drain tank 6. In the cage, the lid of a box 16 provided at a side board is opened, and a rubber hose is connected to a faucet 17 to drain the tank while receiving water with a bucket.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage device for cooling an elevator.

[0002]

2. Description of the Related Art Conventionally, when an air conditioner is installed in a car of an elevator, proper performance is selected from a commercially available air conditioner according to specifications at the time of ordering, and a car structure is designed in accordance with it.
On the building side, we examined whether the top clearance in the hoistway and the pit depth met the legal dimensions, and changed them if necessary.

Further, a drainage basin, a drainage port, and a drainage pump for draining the water discharged from the cooling device from the pit were provided. In addition, when the drainage port and drainage pump were not provided, the maintenance personnel of the elevator regularly drained water from a drainage pit in the pit using a bucket or the like.

These configurations will be described with reference to FIG.

When the top clearance 1 has a dimensional allowance, an integral (window type) cooling device 2 is installed above the car ceiling 3 to send cool air into the car 4 and suck in warm air in the car. Are exchanging heat with.

Drain generated during heat exchange is collected by a drain pipe 5 in a tank 6 provided under the car. When the water collected in the tank 6 becomes full, the level gauge (or float switch) 7 provided inside detects it, and the elevator car 4 runs to the bottom floor for drainage and stops, and for drainage at the bottom of the tank 6. The electromagnetic valve 8 is opened and the water is drained from the drain pipe 9 into the pit 10.

[0007] When there is no statutory allowance in the top clearance 1, a separate type cooling device is used, and a blower inside the car is attached to the top of the car and a heat exchanger is installed below the car, and the drainage is performed. The tank and the like are the same as in the above case.

With this structure, the water in the pit is drained out of the hoistway as follows.

A drainage basin 1 for collecting water in the pit 10.
1, a drainage pipe 12 and a drainage tank 13 that penetrate the foundation beam of the building from the drainage basin 11 are provided, and drainage is performed using a drainage pump 14 and the inclination of the drainage pipe.

The piping for draining outside the pit was not possible,
If there is no drain tank nearby, people who entered the pit from the elevator entrance on the bottom floor drained the water collected in the drain basin regularly. This work is dangerous because of safety issues unless the maintenance staff of the elevator is present.

[0011]

By the way, recent buildings are fully air-conditioned, and indoors provide a comfortable environment.

However, in an elevator having a hoistway where the outer wall of the building faces the south side, there is no air conditioning in the hoistway, so the inside of the elevator car becomes hot, and it is required to install a cooling device in the already paid elevator. Is increasing.

Therefore, when a cooling device is installed in an already delivered elevator car, it may not be possible to drain water from the drainage pit in the pit to the drain tank. Therefore, it is necessary to obtain a device that allows easy drainage without draining water manually. Is the object of the present invention.

[0014]

[Means for Solving the Problems] A float switch or a level sensor is provided in the drain tank, and a lamp and a buzzer are installed at a monitoring panel outside the elevator such as a control room or an external intercom installation place (where there are people) by a full water detection output Display full water with.

The drainage tank is provided with a drainage pipe and a drainage pump connected to a faucet provided in the car room, and the drainage pump is operated by a start switch in the car.

[0016]

[Function] Knowing the fullness of the drainage tank from the display in the control room,
Even during the elevator operation, the drain pump is started in the car to draw water from the faucet into the bucket and drain the tank.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described based on the embodiments shown in FIGS.

A box 16 provided with a drain pipe 15 from the drain tank 6 for the drain of the air conditioner under the car 4 on the rear surface of the car side plate.
Pipe up to and attach the faucet 17 to the end. Further, a drainage pump 18 is attached to the drainage pipe 15. The drainage tank 6 is provided with level meters (limit switches) 7 and 19 for detecting the upper and lower limits of the water level in the tank. A float switch or a level sensor is used as the level meter.

A start switch 20 for the drainage pump is provided on the operation panel in the car. The lamp 21 for full water display of the drainage tank and the buzzer 22 are installed in the monitoring panel of the control room. In the case of an elevator without a monitoring panel, they are installed in the same place as the external interphone.

When the cooling device 2 on the upper part of the car is operated, the drain water discharged from the heat exchanger is accumulated in the drainage tank 6, becomes full with time, the upper limit float switch 7 is closed, and the lamp 21 on the outside monitor panel is turned on. It lights up and the buzzer 22 sounds at the same time to inform the manager that the drainage tank 6 is full.

When the full water is displayed, the electric pump start switch 20 provided on the operation panel in the car is closed, the electromagnetic switch 23 is turned on, the drain pump 18 is rotated, and the drain tank 6 is closed. Pump up water.

In the car, the lid of the box 16 provided on the side plate is opened, a rubber hose is connected to the faucet 17, and water is received by a bucket.

When the water in the drain tank is exhausted, the switch 19 for the lower limit level is opened and the electromagnetic switch 23 is opened,
The drainage pump 18 stops, and the water from the faucet 17 stops.
The faucet 17 is closed and the start switch 20 in the operation panel is opened to complete the drainage work.

As described above, even if the building manager or another person does not have the specialized knowledge, the water can be easily drained at any time. Since there is no need to drain water into the pit in the hoistway, safe work can be performed, and there is no need for attendance by elevator maintenance personnel. Drainage work can be done even during elevator operation.

As another embodiment of the present invention, a drainage tank can be installed on the car depending on the size of the car, and water can be drained by opening the faucet by natural flow.
However, it is still better to install a solenoid valve.

[0026]

EFFECTS OF THE INVENTION According to the present invention, there is no need for piping or the like through the foundation beams of a building, there is no need for a drainage pit in the pit, and drainage treatment is possible regardless of the building.

[Brief description of drawings]

1 is a schematic diagram of an elevator according to the invention, FIG.

FIG. 2 is a partial detailed side view of FIG.

FIG. 3 is a circuit diagram of a drainage tank full water display device,

FIG. 4 is a drain circuit starting circuit diagram,

FIG. 5 is a schematic view of a conventional elevator.

[Explanation of symbols]

 3 ... Cooling device 4 ... Basket 6 ... Tank 7, 19 ... Level sensor 17 ... Faucet 21 ... Lamp 22 ... Buzzer

Claims (1)

[Claims] 1. A drainage tank with a level sensor for a drain of an air conditioner is provided under a car, a full water display device provided by a detection output of the sensor is provided in a car monitoring panel, and the drainage tank is connected to a faucet in the car. A drainage device for cooling an elevator, characterized by being provided with a drainage pipe and a drainage pump.