Disclosure of Invention
Problems to be solved by the invention
In the elevator apparatus of patent document 1, a ventilation window (ventilation opening) is provided in a side panel of the car room. A plurality of devices are disposed within the hoistway. In addition, a space for lifting the counterweight or a space for arranging a sling is required. It is necessary to prevent interference between various devices, counterweights, and slings and a ventilation window opening/closing member (hereinafter, referred to as a ventilation door) for opening and closing the ventilation window. Therefore, restrictions on the equipment arrangement of the hoistway increase. Further, the ventilation ports are provided in the side panels, which increases restrictions on the appearance.
The invention aims to provide an elevator device with less restriction on equipment arrangement and aesthetic appearance.
Means for solving the problems
In order to solve the above problems, an elevator apparatus according to the present invention includes a car room and an air pressure control device for controlling an internal air pressure of the car room,
the air pressure control device comprises a blower for making air flow in and out of the interior of the car chamber, a pipeline for communicating the blower with the interior of the car chamber, and a shunting chamber which is arranged at the upper part of the car chamber and is connected with the pipeline,
the side surface of the shunting chamber is provided with an opening and a ventilation door which is closed at ordinary times and is opened in the case of power failure.
Effects of the invention
According to the elevator apparatus of the present invention, it is possible to provide an elevator apparatus in which the ventilation door is provided on the ceiling plate of the car room, and thus the facility arrangement of the hoistway and the restriction on the appearance are reduced.
Problems, structures, and effects other than those described above will be apparent from the following description of the embodiments.
Detailed Description
Hereinafter, embodiments of the present invention will be described based on the drawings.
First, an elevator apparatus according to an embodiment of the present invention will be described with reference to fig. 5. Fig. 5 is a schematic configuration diagram showing an elevator apparatus according to an embodiment of the present invention.
An elevator hoistway 101 formed in a super high-rise building includes a car room 1 on which passengers are placed to ascend and descend, a counterweight 111, a rope 110 suspending and connecting the car room 1 and the counterweight 111, a hoisting machine 112 including a sheave 102 around which the rope 110 is wound and a motor 103 connected to the sheave 102 and giving a driving force to the sheave 102, an elevator control device 104 controlling a rotation speed of the motor 103, an air pressure control device 2 installed in the car room 1, an air pressure sensor 108 detecting an air pressure in the car room 1, an air pressure control unit 107 controlling the air pressure control device 2 and the air pressure sensor 108, and a call button 109 provided in a stop floor of the building where the car room 1 is stopped and calling the car room 1.
Next, the structure of the car room will be described with reference to fig. 1. Fig. 1 is a front view showing a schematic structure of a car room according to an embodiment of the present invention. In the elevator apparatus shown in fig. 1, the components necessary for the description of the present invention are described, and the other components are omitted.
The elevator apparatus of the present embodiment includes a car room 1 in which passengers are placed and lifted, and an air pressure control device 2 that controls the internal air pressure of the car room 1. In a super high-rise building, there is a continuous demand for higher speed elevators. In an elevator at a high speed, the change in air pressure per unit time is increased, and the total amount of change in air pressure is large. When a large air pressure variation occurs, the passenger feels a feeling of ear-plug. Therefore, in a high-speed elevator apparatus used in an ultra-high floor, an air pressure control device is generally provided that controls the internal air pressure of the car room 1 in accordance with the air pressure outside the car room 1. However, the present invention is not limited to the number of floors of the building and the speed of raising and lowering the car room 1 to specific values, and can be applied to any elevator apparatus provided with the air pressure control device 2.
The car room 1 has a vertically long rectangular parallelepiped shape, and includes side panels 3 provided in four lateral directions, a floor 4 supporting the side panels 3 at a lower portion, a top plate 5 provided at an upper portion of the side panels 3, and a door 6 provided at a front side of the car room 1 and slidably openable and closable.
The car room 1 is provided with a seal 7 that closes a gap between the joint portions of the side panels 3, a gap between the joint portions of the side panels 3 and the floor 4, a gap between the joint portions of the side panels 3 and the ceiling 5, a gap between the closed door 6 and the side panels 3 and the floor 4, and a gap between the closed doors 6, and maintains airtightness inside the car room 1.
In order to control the internal air pressure of the airtight car room 1, an air pressure control device 2 is provided on the ceiling plate 5. The structure of the air pressure control device 2 will be described below.
A rectangular shunt chamber 8 is arranged on the top plate 5. Specifically, the diversion chamber 8 is provided on the space side of the elevator shaft 101 with respect to the ceiling 5. That is, the diversion chamber 8 is disposed outside the car room 1. An opening 8a and a ventilation door 9 (see fig. 2) that closes the opening 8a in a normal state and opens the opening 8a by automatically opening the door in an emergency (power failure) are provided on a side surface of the diversion chamber 8. The ventilation door 9 has an area that satisfies the necessary ventilation gap. The diversion chamber 8 is a flow path element forming a space (chamber) in which the flow of air flowing into the car room 1 or flowing out of the car room 1 is changed by opening and closing the ventilation door 9 provided on the side surface. The side surface of the diversion chamber 8 in which the ventilation door 9 is provided is constituted by a surface standing in the vertical direction from the top plate.
One end of the duct 10 is connected to the upper surface of the branch flow chamber 8. The duct 10 has a cross-sectional area necessary for air pressure control, and the upper surface of the branch flow chamber 8 has an area of a size that can secure the cross-sectional area of the duct 10. The duct 10 is flexible and can change its shape. Therefore, the diversion chamber 8 constitutes a duct connection portion of the duct 10, and the ventilation door 9 is provided in the duct connection portion, i.e., the diversion chamber 8.
The other end of the duct 10 is connected to a rectangular parallelepiped chamber 11 provided for reducing noise. One end of the pipe 12 is connected to the chamber 11, and the other end of the pipe 12 is connected to the blower 13. The blower 13 is a device for causing air to flow into the car room 1 or causing air to flow out of the car room 1.
When air is caused to flow into the car room 1, air pressure-fed from the blower 13 enters the chamber 11 through the pipe 12. The air introduced into the chamber 11 enters the diversion chamber 8 provided above the ceiling plate 5 of the car room 1 through the duct 10. The air that has entered the diversion chamber 8 enters the interior of the car room 1 through an opening (communication hole) 5a (see fig. 3) provided in the ceiling plate 5 of the car room 1. When the air is caused to flow out of the car room 1, the above-described inflow route is opposite to the flow of the air. By the above method, the internal air pressure of the car chamber 1 is controlled by adjusting the amount of air entering the car chamber 1. In the state where the air pressure control is performed, the power supply is normally performed, and the ventilation door 9 is in the closed state.
The ventilation door 9 is automatically opened and closed when power is off. The opening and closing mechanism can be configured in the same manner as the elevator ventilator described in patent document 1. The structure of the ventilation door (ventilation window opening/closing member of patent document 1) 9 will be described with reference to fig. 2. Fig. 2 is a perspective view showing a ventilation door according to an embodiment of the present invention.
The ventilation door 9 is provided on the side surface of the diversion chamber 8, and therefore the opening and closing direction is horizontal. In this case, the axial direction of the rotation shaft of the gas exchange door 9 is arranged along the vertical direction G. Therefore, the operating force during the opening/closing operation can be reduced as compared with the case where the ventilation door 9 is provided on the ceiling surface and opened/closed in the vertical direction. This makes it possible to reduce the size of the opening/closing mechanism of the ventilation door 9 and to reduce the energy consumed by the opening/closing mechanism. As a result, the ventilation door 9 can be opened and closed efficiently.
Even in a state where the axial direction of the turning shaft of the ventilation door 9 is slightly inclined with respect to the vertical direction G, the energy consumption of the opening and closing mechanism can be reduced as compared with a case where the axial direction of the turning shaft is arranged in the horizontal direction and the ventilation door is turned in the vertical direction. Therefore, a configuration in which the axial direction of the rotation shaft of the ventilation door 9 is slightly inclined with respect to the vertical direction G is also included in the present invention.
Next, the flow of air inside the air pressure control device 2 and the car room 1 will be described with reference to fig. 3. Fig. 3 is a front view showing the flow of air in the elevator apparatus according to the embodiment of the present invention. Fig. 3 shows a state in which the gas exchange door 9 is opened.
The blower 13 is configured to have a gap through which air can flow in and out even in a stopped state. In this case, the ventilation can be performed by providing the blower 13 above the ventilation door 9, generating convection by utilizing the difference in height between the door 9 and the blower 13, and flowing in and out the air in the car room 1 on the same route as in the above-described air pressure control.
That is, the blower 13 and the ventilation door 9 are disposed at a distance in the vertical direction G, and the blower 13 and the ventilation door 9 are disposed with a step. By opening the gas exchange door 9, a convection of air is generated between the blower 13 and the gas exchange door 9. The air in the car room 1 flows in and out by the convection. The car room 1 has a highly airtight structure, but a minute gap exists around the door 6 as a representative example. When the ventilation door 9 is opened, convection of air occurs between the opening of the ventilation door 9 and a minute gap existing in the car room 1.
Next, the flow of air including the interior of the car room 1 will be described. Fig. 4 is a cross-sectional view showing the flow of air in the elevator apparatus according to the embodiment of the present invention.
When controlling the air pressure in the car room 1, the side panels 3 are deformed in accordance with changes in the air pressure, and thus the side panels 3 are configured by the inner plates 14 and the outer plates 15 so as not to cause uneasiness to passengers. The inner plate 14 is disposed inside the car room 1. The outer panel 15 is disposed outside the car room 1. Then, by providing gaps in the upper and lower portions of the inner plates 14, convection as shown in fig. 4 can be generated in the car room 1.
The air pressure controlled elevator has a high air-tight structure, and a small gap, typically a gap around the door 6, exists in addition to the gap of the inner panel 14. Convection is also generated by the gap between the upper and lower portions of the inner panel 14 or other minute gaps. Therefore, ventilation can be performed at the time of power failure in accordance with convection caused by a difference in height between the ventilation door 9 and the blower 13.
According to the elevator apparatus of the present embodiment, the ventilation door 9 is provided only on the ceiling of the car room 1, so that restrictions on the equipment arrangement and the appearance of the hoistway can be reduced.
When the ventilation door is provided on the side panel, ventilation is performed at a portion which is easy to be seen by a customer during power failure, and the feeling of insecurity brought to the customer is increased. However, in the present embodiment, the ventilation door 9 is disposed at a position invisible to the passenger, and therefore, the feeling of uneasiness given to the passenger can be reduced.
In addition, when the elevator ventilation device described in patent document 1 is directly disposed on the ceiling plate of the car room, the opening and closing direction of the ventilation window opening and closing member (ventilation door) that opens the door is the vertical direction, and a large operating force is required for opening and closing the ventilation door. Therefore, the opening and closing mechanism of the ventilation door is large in size, and energy consumed by the opening and closing mechanism is increased.
According to the present embodiment, the diversion chamber 8 is provided above the car room 1, and the ventilation door 9 is provided on the side surface thereof, whereby the opening and closing direction of the ventilation door 9 becomes the horizontal direction. Therefore, energy required for opening and closing the ventilation door 9 is reduced, and efficient ventilation is possible.
Description of the reference numerals
1: a car room; 2: a pneumatic control device; 3: a side panel; 4: a floor; 5: a top plate; 6: a door; 7: a seal member; 8: a shunting chamber; 8 a: an opening of the diverter chamber; 9: a ventilation door; 10: a pipeline; 11: a chamber; 12: piping; 13: a blower; 14: an inner plate; 15: an outer plate; 101: an elevator hoistway; 102: a sheave; 103: an electric motor; 104: an elevator control device; 107: an air pressure control unit; 108: an air pressure sensor; 109: a call button; 110: a sling; 111: a counterweight; 112: a hoisting machine.