JP2502193B2 - Elevator hoistway device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator hoistway device, such as a high-lift elevator, in which draft easily occurs.

[0002]

2. Description of the Related Art A draft flows into an elevator hoistway from a gap where a hall is formed due to a stack effect of the hoistway. Also, air pressure outside the building acts on the landing door,
In winter, the heating of the building increases draft power. For example, as disclosed in Japanese Patent Application Laid-Open No. 53-23453, there is an elevator device provided with a detection device that detects the opening of the door at the entrance of the elevator hall and a control device that increases the driving force of the door at the elevator hall. .

In the elevator apparatus as described above, when the door in the elevator hall is opened, the detection apparatus operates, and this operation increases the driving force of the door at the elevator hall via the control apparatus. As a result, it is possible to prevent an operation failure caused by an increase in opening / closing resistance of the door at the hall due to the air pressure in the elevator hall.

[0004]

The elevator apparatus as described above has a problem in that the blowing noise due to the draft flowing into the hoistway through the gap between the doors of the hall cannot be suppressed. In addition, there is a problem in that the number of constituent devices is increased to prevent the door from opening and closing due to the external pressure, resulting in a high cost.

It is known that the draft noise is higher as the gap between the doors in the hall is smaller, and the volume is proportional to the sixth power of the draft flow velocity. Further, the flow velocity of the draft passing through the door gap of the hall is proportional to the 1/2 power of the air pressure inside and outside the hoistway.

The present invention has been made to solve the above problems, and suppresses an unpleasant squeaking noise due to a draft generated by a difference in air pressure between the inside and outside of a hoistway and a door opening / closing obstacle, thereby suppressing the elevator quietly. It is an object of the present invention to obtain an elevator hoistway device that is improved and the reliability of elevator operation is improved.

[0007]

In the elevator hoistway device according to the present invention, the draft detection means that flows into the hoistway from the landing gap, the draft control means provided in the hoistway, and the output of the draft detection means are provided. A control device is provided for operating the draft control means accordingly.

[0008]

The draft detecting means of the elevator hoistway device constructed as described above produces an output in accordance with the draft force, and the control device carries out the following control. That is, when the draft control means is an electric damper, the opening is enlarged to reduce the draft force from the gap in the landing, and when the draft control means is a pressurizing device, the air pressure in the hoistway is increased. Decrease draft power.

[0009]

EXAMPLES Example 1. 1 and 2 are views showing an embodiment of the present invention.
The hoistway 3 for raising and lowering the car 2 is a hall provided in the hoistway 1 at a distance from each other, and 4 is draft detection means provided in a gap between the doors of the hall 3 below, which includes an air flow meter, an anemometer,
It is composed of at least one sound level meter or the like for measuring draft volume. Numeral 5 is a draft control means which is provided in the hoistway 1 and is vertically separated from each other and is composed of an electric damper arranged in an opening 5a communicating with the outside air and having a controller 5b.

Reference numeral 6 denotes a control device, which is formed by a command value 6a set from an allowable value of the draft force, a subtractor 6b, a draft level control means 6c, and an opening command output 6d to the draft control means 5. Reference numeral 7 is a fire detector provided at an appropriate place in the building where the hoistway 1 is provided.

In the elevator hoistway device configured as described above, the draft force that flows into the hoistway 1 from the gap of the hall 3 is small, that is, the sound volume due to the draft is small, and the draft wind speed is slow and the draft detecting means 4 is provided. Is smaller than the command value 6a, the opening command output 6d of the controller 6 is not generated. Therefore, the draft control means 5 is held in a non-operating state and the opening (5a) is closed.

However, when the draft force becomes large and the draft detection means 4 becomes larger than the command value 6a, the opening command output 6d is generated via the draft control means 6c.
As a result, the draft control means 5 is urged to open in an area corresponding to the draft urging force, and external air flows into the hoistway 1 through the opening (5d). Therefore, the draft force from the gap of the platform 3 is reduced, the unpleasant noise is reduced, and the door opening / closing obstacle can be prevented. And, with a simple device configuration, the elevator is quieted,
The operational reliability can be improved.

When a fire occurs in the building, the control device 6 issues a closing command to the draft control means 5 by the operation of the fire detector 7 to prevent the smoke from entering through the opening (5a). To be done. When the fire detector 7 is operating, the opening command output 6d is deenergized.

Example 2. FIG. 3 is a view showing another embodiment of the present invention. In the figure, the same reference numerals as those in FIGS. 1 and 2 indicate corresponding parts, and 5 is added by a pressure fan provided toward the inside of the hoistway 1. It is a draft control means consisting of a pressure device.

In the second embodiment shown in FIG. 3, when the output of the draft detecting means 4 increases, the draft control means 5 is energized via the control device 6 in accordance with the output of the draft detecting means 4. As a result, the air pressure in the hoistway 1 is increased, the draft force is suppressed, the sounding noise is reduced, and the door opening / closing obstacle can be prevented. Therefore, although detailed description is omitted, it is clear that the same operation as in the second embodiment can be obtained in the second embodiment.

[0016]

As described above, according to the present invention, the draft control means is biased in accordance with the output of the draft detection means to suppress the draft biasing force.

Therefore, with a simple device structure, the unpleasant noise caused by the draft from the hall gap is reduced,
It also has the effect of preventing the occurrence of door opening / closing obstacles.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram conceptually showing a first embodiment of the present invention.

FIG. 2 is a conceptual diagram of the control device of FIG.

FIG. 3 is an overall configuration diagram conceptually showing a second embodiment of the present invention.

[Explanation of symbols]

 1 hoistway 3 hall 4 draft detection means 5 draft control means 6 control means

Claims (2)

(57) [Claims] 1. A draft detecting means for outputting an output according to a draft force flowing into a hoistway through a landing gap, a draft control means comprising an electric damper provided in an opening communicating with the hoistway outside air, An elevator hoistway device comprising: a controller for urging the draft control means according to an output value of the draft detection means to reduce the draft force. 2. A draft detecting means for producing an output according to a draft force flowing into a hoistway from a landing gap, a draft control means comprising a pressurizing device for raising the air pressure in the hoistway, and the draft detecting means. An elevator hoistway device comprising: a controller for urging the draft control means according to an output value to reduce the draft force.