Elevator control device

Abstract

To reduce the influence of draft without changing a building structure or a door structure by an EL operation method.SOLUTION: This elevator control device is for controlling door opening / closing of a plurality of elevator machines lifted in a hoistway of the same section while avoiding the influence of draft, and performs control to divide a reference floor into upper and lower floors, close the door of the elevator of the lowest floor when there is a currently door-opened elevator on the upper floor, and close the door of the elevator of the upper floor when there is a currently door-opened elevator on the lower floor.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] An embodiment of the present invention relates to an elevator control device. [Background technology]

[0002] In elevators (hereafter referred to as "EL") with long ascending and descending strokes in high-rise buildings, the influence of the chimney effect on door opening and closing operation in winter (hereafter referred to as "draft") can become a problem. Generally, the influence of the draft can be suppressed by installing a windbreak room on the building side and controlling the air pressure with air conditioning. However, the recent severe cold wave and power saving measures can cause more draft than expected, which can disrupt the operation of EL.

[0003] Conventionally, techniques have been proposed to reduce the effects of draft by varying the structure of elevators and doors. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2014-19519 A [Patent Document 2] Patent No. 6054482 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with conventional technologies that reduce draft through building structure, it is necessary to anticipate the draft effects from the building planning stage, and there is a problem that if the draft effects become apparent after the EL is installed, the problem cannot be solved.

[0006] In addition, conventional technologies that reduce the effects of drafts by varying the door structure have issues such as the door structure being complicated and being difficult to apply to existing doors.

[0007] In view of the above circumstances, the present invention aims to provide an elevator control device that can reduce the effects of draft by changing the operation method of an elevator without changing the building structure or door structure. [Means for solving the problem]

[0008] An embodiment for achieving the above-mentioned object is an elevator control device that controls the opening and closing of the doors of multiple elevators ascending and descending in the same elevator shaft so that they are not affected by draft, dividing floors into upper and lower floors with a reference floor as the boundary, and controlling the doors of elevators on lower floors to close when there is an elevator with its doors open on an upper floor, or to close the doors of elevators on upper floors when there is an elevator with its doors open on a lower floor. [Brief description of the drawings]

[0009] [Figure 1] 1 is a block diagram showing a configuration of an embodiment of an elevator control device according to the present invention. [Diagram 2] FIG. 1 is an explanatory diagram illustrating the principle of an embodiment of the present invention. [Diagram 3] 5 is a flowchart showing a processing procedure of a draft reduction operation execution control unit in the embodiment of the present invention. [Figure 4] 10 is a flowchart showing a processing procedure of a door opening prohibition command generating unit in the embodiment of the present invention. [Diagram 5] FIG. 11 is a block diagram showing a configuration of a modified example of an elevator control device according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] <Embodiment> FIG. 1 is a block diagram showing the configuration of an embodiment of an elevator control device according to the present invention, and FIG. 2 is an explanatory diagram showing the principle of the embodiment of the present invention.

[0011] First, the principle of the embodiment of the present invention will be described with reference to FIG.

[0012] If elevators ascending and descending in the same section open the doors at the same time on both upper and lower floors, the draft will cause a large load when the doors close. Therefore, a certain floor (optional for each property) is used as a boundary to separate upper and lower floors, and the doors are controlled so that they do not open at the same time on both upper and lower floors. The same section refers to a case where multiple elevators ascend and descend in the same elevator shaft. For example, the elevators are separated by a net or similar, but the wind passing through the elevator shaft affects the operation of each elevator through the net.

[0013] Here, as shown in Figure 2, the boundary between the upper floor and the lower floor is set as the reference position, i.e., the reference floor. The reference floor is the floor where the pressure difference between the hoistway and the elevator hall is reversed. The draft effect is reduced by not opening the sides where air flows in and out of the hoistway at the same time. As shown in Figure 2, hoistways A and B are independent sections, and there is no air flow between them.

[0014] In Figure 2, elevator A 1A has its doors open on the upper floors in elevator shaft A, while elevators B 1B and C 1C on the lower floors have their doors closed. In this state, elevators B 1B and C 1C on the lower floors have their doors closed, so the upward draft from the lower floors to the upper floors is suppressed. Therefore, elevator A 1A is not affected by the draft even if its doors are stopped open.

[0015] In addition, in elevator shaft B, elevator D 1D has its doors closed, while elevator E 1E and elevator F 1F have their doors open. In this case, elevator shafts A and B are separated by independent sections, so even if elevator A 1A has its doors open on the upper floors of elevator shaft A, elevators 1E and 1F in elevator shaft B can open their doors on the lower floors without being affected by the draft.

[0016] Configuration of the embodiment 1, the unit A controller 10A as an embodiment of an elevator controller includes a draft reduction operation execution control unit 11, an execution schedule setting unit 12, a door opening prohibition command generation unit 13, a reference floor setting unit 14, and a door opening / closing control unit 15. Since the unit B controller 10B has the same configuration as the unit A controller 10A, the following description will be given of the unit A controller 10A.

[0017] The draft reducing operation execution control unit 11 compares the current date and time with a schedule previously set in the execution schedule setting unit 12 to determine whether or not to execute the draft reducing operation.

[0018] The execution schedule setting unit 12 sets schedule information for performing the draft reduction operation based on calendar information and time information.

[0019] The door opening prohibition command generating unit 13 determines whether the own car and the other car (car B) are located on an upper floor or a lower floor based on the cage position information of the own car, and generates a door opening prohibition command for the own car based on the determination result.

[0020] The reference floor setting unit 14 sets in advance a floor that is the boundary between an upper floor and a lower floor as the reference floor. For example, as shown in Fig. 1, the reference floor is a floor where the pressure difference between the air pressure in the elevator shaft and the air pressure in the hall becomes close to zero in the height direction from the lower floor to the upper floor.

[0021] The door opening / closing control unit 15 outputs a door opening / closing command to the EL door control device 20, and outputs a door closing command to the EL door control device 20 when the door opening prohibition command generating unit 13 outputs a door opening prohibition command.

[0022] Processing Procedure of the Embodiment FIG. 3 is a flowchart showing the processing procedure of the draft reducing operation execution control unit 11, and FIG.

[0023] As shown in FIG. 3, the draft reduction operation execution control unit 11 acquires current date and time information in the unit-A control device 10A and compares it with the schedule information in the execution schedule setting unit 12 (steps S1, S2).

[0024] If the current date and time is within the range of the preset schedule (step S3 YES), a draft reduction operation execution command is output to the door open prohibition command generating unit 13 (step S4). On the other hand, if the current date and time is not within the range of the preset schedule (step S3 NO), the draft reduction operation execution command is turned off and is not output (step S5).

[0025] As shown in FIG. 4, the door opening prohibition command generating unit 13 determines whether or not the draft reducing operation execution command is on (step S12) when the door opening prohibition command to the door opening / closing control unit 15 is off (step S11).

[0026] When the draft reduction operation execution command is ON (step S12 YES), it is determined whether the car position of the own car is at an upper floor that is higher than the reference floor (car position ≧ reference floor) (step S13).

[0027] Next, it is determined whether the nth car is in the same section (group) (steps S15, S21). n indicates the number of elevator cars (car number) in the group, and the determination process is executed until the determination for all cars in the group is completed (steps S14, S19).

[0028] If the car is located on an upper floor (step S13 YES), the car position of the n-th car is on a lower floor, and the door of the n-th car is open (steps S16, S17), the door open prohibition command is turned on and a door open prohibition command is output to the door open / close control unit 15 (step S18). As a result, the door open / close control unit 15 outputs a door close command to the EL door control device 20, and closes the door if it is open.

[0029] Even if the car is on a lower floor (step S13 NO), the car position of the n-th car is on an upper floor, and the door of the n-th car is open (steps S22, S23), the door open prohibition command is turned on and a door open prohibition command is output to the door open / close control unit 15 (step S24). As a result, the door open / close control unit 15 outputs a door close command to the EL door control device 20, and closes the door if it is open.

[0030] According to the above embodiment, when it is expected that a draft will interfere with the opening and closing of the elevator doors, the effects of the draft can be reduced by changing the elevator operation pattern and implementing draft operation control, without changing the structure of the elevator shaft or doors.

[0031] According to the above embodiment, when it is expected that a draft will interfere with the opening and closing of the elevator doors, the effects of the draft can be reduced by changing the elevator operation pattern and implementing draft operation control, without changing the structure of the elevator shaft or doors. <Variation 1> This section explains the case where there are three or more units in the same section.

[0032] FIG. 5 is a block diagram showing the control when there are four units, A, B, C, and D, in the same section.

[0033] Unit A is controlled by Unit A control device 10A, Unit B is controlled by Unit B control device 10B, Unit C is controlled by Unit C control device 10C, and Unit D is controlled by Unit D control device 10D, and Unit A control device 10A to Unit D control device 10D are controlled in unison by group management control device 30.

[0034] In this case, focusing on the Unit A controller 10A, the Unit A controller 10A receives cage position information and door open / closed state information of each of Units B to D from the group management controller 30. The door open prohibition command generating unit 13 of the Unit A controller 10A executes the process shown in Fig. 4 based on the cage position of its own unit and the cage position information and door open / closed state information of each of Units B to D to implement draft operation control and reduce the effects of the draft. <Variation 2> It is also possible to set no restrictions on the timing of door opening and closing, and to move an elevator car with no call registration, or a specific elevator car that has been excluded from call registration and assigned to reduce load, to the upper or lower terminal floor where the draft effect is greater, and have it wait with the door open. Even if the doors are opened and closed simultaneously on the upper and lower floors, the load is distributed by the cars waiting with the door open, reducing the impact of the draft. <Modification 3> Usually, the above-mentioned draft operation control may not be performed during periods or time periods when the influence of the draft is small, and may be automatically switched to the draft operation control during specific periods or time periods when the influence of the draft is large. Also, for example, the execution and stop of the draft operation may be switched on and off by a signal input from a disaster prevention center. Furthermore, a draft influence determination device that determines the influence of the draft based on the temperature difference and the air pressure difference inside and outside the building and inside and outside the elevator shaft may be separately provided, and the draft operation control may be switched on based on the output of the device.

[0035] Although several embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, and are included in the scope of the invention and its equivalents described in the claims. [Explanation of symbols]

[0036] 1A...Unit A elevator, 1B...Unit B elevator, 1C...Unit C elevator, 1D...Unit D elevator, 1E...Unit E elevator, 1F...Unit F elevator, 10A...Unit A control device, 10B...Unit B control device, 10C...Unit C control device, 10D...Unit D control device, 11...draft reduction operation execution control unit, 12...execution schedule setting unit, 13...door opening prohibition command generation unit, 14...reference floor setting unit, 15...door opening / closing control unit, 20...elevator (EL) door control device, 30...group management control device.

Claims

1. An elevator control device that controls the opening and closing of doors of multiple elevators ascending and descending in a single elevator shaft so as not to be affected by draft, This elevator control device divides floors into upper and lower floors with a reference floor as a boundary, and performs draft operation control so that when there is an elevator with its door open on an upper floor, the elevator on the lower floor closes its door, or when there is an elevator with its door open on a lower floor, the elevator on the upper floor closes its door.

2. 2. The elevator control device according to claim 1, wherein the reference floor is a floor where a differential pressure between the air pressure in the elevator shaft and the air pressure in each floor hall is close to zero.

3. An elevator control device that controls the opening and closing of doors of multiple elevators ascending and descending in a single elevator shaft so as not to be affected by draft, The elevator control device performs draft operation control by allocating at least one of the plurality of elevators for reducing a draft load, and when no call is registered, controlling the elevator to move to either the top floor or the bottom floor where the draft effect is greater and wait with the door open.

4. 4. The elevator control device according to claim 3, wherein the elevator assigned for the draft load reduction is excluded from call registration and is used exclusively for load reduction.

5. 4. The elevator control device according to claim 1, wherein the draft operation control is not performed at a time or time zone when the influence of the draft is small or in accordance with an external instruction, and the draft operation control is switched to automatically or in accordance with an external instruction at a specific time or time zone when the influence of the draft is large.

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