JPS6333908Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Technical background of the invention and its problems] Recently, elevators with air-conditioning coolers installed in the cars have become commonplace in order to maintain a moderate temperature inside the cars. This cooler-equipped elevator generally has a cooler installed at the top of the car, and the water generated by dehumidifying the cooler is stored in a tank installed at the bottom of the car, and the car is lowered to the lowest floor. Water is drained by opening a solenoid valve.

FIG. 1 shows a conventional elevator with a cooler, in which a car that goes up and down in a hoistway 1 consists of a car frame 3 suspended from a rope 2, and a lower beam 3 of this car frame 3.
The car chamber 4 is supported by a car floor frame 5 attached to the car floor frame 5 via an elastic body such as vibration isolating rubber 6. In addition, 7 is the entrance/exit door on the side of car room 4, and 8
is the entrance door on the building side. Reference numeral 10 denotes a cooling cooler provided at the top of the car, and this cooler 10 is installed on the upper beam 3b of the car frame 3 via a bracket 9. 10a is the air outlet of this cooler 10;
Reference numeral 10b denotes an air intake port, and the air outlet 10a and air intake port 10b are connected to the ceiling of the car room 4 to form a vibration-proof structure. Further, a tank 11 for storing water generated by dehumidifying the cooler 10 is fixed under the car floor frame 5.
and the cooler 10 are connected by a drain pipe 12. Further, a drain pipe 13 of an appropriate length is connected to the lower part of the tank 11, and this drain pipe 13 is provided with a solenoid valve 14.
When the car is lowered to the lowest floor, the water accumulated in the tank 11 is drained from the drain pipe 13 to a drain receiver 15 provided at the bottom of the pit at the bottom of the hoistway by opening the solenoid valve 14. It is designed to be drained.

On the other hand, in FIG. 1, 16 is a limit switch provided as an overload detector for detecting an overload in the car room 4, and this overload detection limit switch 16 is attached to the car floor frame 5. This overload detection limit switch 16 is
This is used to detect when the load of passengers etc. in the car room 4 becomes overload, and the car room 4 bends the vibration isolating rubber 6 due to the load and lowers relative to the car frame 2. Then, the cam member 17 attached to the lower part of the car chamber 4 moves the limit switch 1.
The limit switch 16 is actuated upon contact with the actuator 6, and the elevator control circuit is activated by the signal to prevent the entrance doors 7 and 8 from closing or to issue an alarm.

By the way, in the above-mentioned elevator with a cooler, when the humidity in the hoistway 1 is high, the amount of dehumidification by the cooler 10 increases, so a large amount of water flows into the tank 11. In this case, there is no particular problem in elevators that frequently lower the car to the lowest floor because the water in the tank 11 can be drained frequently, but in elevators that lower the car to the lowest floor less frequently. In this case, since the number of times the tank 11 can be drained is limited, there is a risk that the tank 11 will become full and water will overflow from the tank 11. For this reason, generally, when the amount of water in the tank 11 reaches a certain level, the cooling operation of the cooler 10 is switched to only the ventilation operation to prevent any more water from flowing into the tank 11. The purpose of providing the cooler 10 would be lost.

For this reason, conventionally, it has been considered to make the tank 11 larger so that it can store a large amount of water.For example, if the tank capacity is set according to the daily dehumidification amount of the cooler 10, There is no need to switch the air conditioner to only blowing air, and the tank 11
Drainage from the cage can be done by simply lowering the basket to the bottom floor about once a day. Incidentally, if the tank 11 is made larger, the weight of the tank and the amount of water stored increase accordingly, so the weight of the entire car becomes heavier, but if it is within the allowable range of the load borne by the hoisting machine and the rope 2, the tank 11 can be made larger. It is possible.

However, in the above-mentioned conventional elevator with cooler, the floor frame 5 in which the tank 11 is attached to the car frame 3
Since the tank 11 is supported by
Therefore, there was a problem that it was difficult to increase the size of the tank 11. In other words, in order to keep the load on the hoisting machine and rope within the allowable range in an elevator with a cooler, it is necessary to reduce the number of passengers in the car by the increased weight of water in the tank. However, in the conventional cooler-equipped elevator, since the tank 11 is supported by the car frame 3 via the car floor frame 5, overload detection by the overload detection limit switch 16 is based on the load inside the car chamber 4. Therefore, even if the weight of the water accumulated in the tank 11 becomes quite heavy, passengers will continue to be carried until the load in the car compartment 4 becomes overloaded. Even if the load inside the car 4 approaches the permissible limit and the total car load corresponding to the sum of the loads of the car chamber 4 and the tank 11 becomes overloaded, there is a risk that the elevator will continue to operate.
For this reason, conventionally, the weight of the tank 11 when it is full of water is determined in advance to set the permissible load of the car 4, that is, the operation timing of the limit switch 16 for overload detection. Since it is necessary to keep the number of passengers in the car compartment 4 to a small level even when there is not much water in the car compartment 11, in order to secure a certain number of passengers, the tank 11 must be made small and the number of passengers in the car compartment 4 can be kept small. In some cases, the only option was to switch from cooling to only blowing air.

[Purpose of invention]

This idea was developed in view of the above-mentioned circumstances, and its purpose is to detect the total car load, including not only the load inside the car but also the weight of water in the tank. This allows more passengers to be carried in the car when there is not much water in the tank, and limits the number of passengers when water accumulates in the tank and the weight of the tank increases. In addition to making the tank larger, the cooler can be used for long periods of time even when the tank cannot be drained frequently. Our objective is to provide an elevator with a cooler.

[Summary of the idea]

That is, this invention provides a tank for temporarily storing water from a cooler at the top of the car, which can be lowered depending on the car's own weight via an elastic body, either together with the car room or separately from the car frame. , an overload detector that detects that the sum of the weight of stored water in the tank and the loaded weight in the car compartment has become an overload based on the degree of descent of the tank together with the car compartment or each of the tanks relative to the car frame; It is configured by providing.

[Example of idea]

An embodiment of this invention will be described below with reference to FIG. Components in the figure that correspond to the conventional elevator shown in FIG. 1 are given the same reference numerals, and their explanation will be omitted.

In this embodiment, a tank 11 for storing water generated by dehumidification of a cooler 10 is suspended and fixed under the floor of a car compartment 4 by a bracket 18, and this tank 11 is free from the car floor frame 5. , and due to the deflection of the elastic body that supports the car chamber 4, for example, the vibration isolating rubber 6, the car frame 3 and the car floor frame 5 are damaged together with the car chamber 4.
An overload detection limit switch 16, which is attached to the car floor frame 5 as an overload detector, is actuated by a cam member 17 attached to the lower part of the car chamber 4. Detects the descent of car room 4, and reduces the load in car room 4 and tank 1.
It is designed to detect that the sum of the weight of water in 1 has become an overload.

In this cooler-equipped elevator, the weight of the passengers in the car room 4 and the weight of the water in the tank 11 are both applied to the car room 4. The total car load, including the weight of water, can be detected by the overload detection limit switch 16. Therefore, when there is not much water in the tank 11, it is possible to detect many passengers in the car compartment 4. In addition, if water accumulates in the tank 11 and the weight of the tank increases, the number of passengers should be limited by preventing the boarding door from closing or issuing an alarm, or the elevator may be operated. control the speed,
Safe operation can be performed, and since the tank 11 can be enlarged, the cooler 10 can be operated for a long time even when the tank 11 cannot be drained frequently.

In the above embodiment, the limit switch 16 is used to detect overload, but a device that continuously detects displacement, such as a linear former, may be used to detect overload. Further, in the embodiment described above, the tank 11 is fixed to the car compartment 4 so that the tank 11 is lowered together with the car compartment 4, but the tank 11 is attached to the car frame 3 or the car frame 3 separately from the car compartment 4. The attached car floor frame 5 may be supported via an elastic body or the like so that it descends due to the weight of the water. In that case, the amount of descent of the tank 11 and the amount of descent of the car chamber 4 may be determined separately. The overload may be detected by an overload detector and the sum of the detected values.

[Effect of idea]

According to this invention, it is possible to detect not only the load inside the car but also the total weight of the car, including the weight of water in the tank. It is possible to carry passengers, and if water accumulates in the tank and the weight of the tank increases, it is possible to operate safely by limiting the number of passengers, and this also makes it possible to increase the size of the tank. Therefore, even if the tank cannot be drained frequently, the cooler can be operated for a long time.

[Brief explanation of the drawing]

Figure 1 is a side view of a conventional elevator with a cooler.
FIG. 2 is a side view of an elevator equipped with a cooler showing an embodiment of this invention. 3... Car frame, 4... Car room, 5... Car floor frame, 6...
Anti-vibration rubber, 10...cooler, 11...tank, 12...
Drain pipe, 13...Drain pipe, 16...Limit switch for overload detection, 17...Cam member, 18...Bracket.

Claims (1)

[Scope of utility model registration request] A cooler is installed at the top of the car to cool the inside of the car.
In an elevator equipped with a cooler, in which a tank is provided at the bottom of the car to temporarily store water generated by the dehumidification of the cooler, the tank is attached to the car frame together with the car room or separately from the car room through an elastic body. The tank should be able to be lowered depending on the car frame, and the sum of the weight of the water stored in the tank and the loaded weight in the car room would be overloaded due to the degree of lowering of the tank together with the car room or each of them relative to the car frame. An elevator with a cooler, characterized in that it is configured with an overload detector that detects.