CN109665389B

CN109665389B - Non-contact power supply elevator

Info

Publication number: CN109665389B
Application number: CN201811189342.7A
Authority: CN
Inventors: 山田正明; 森和久; 大沼直人; 松本洋平; 吉川敏文
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 2017-10-16
Filing date: 2018-10-12
Publication date: 2021-02-09
Anticipated expiration: 2038-10-12
Also published as: CN109665389A; JP2019073362A; JP7062399B2

Abstract

The invention provides a non-contact power supply elevator which can increase power supply opportunities and restrain unnecessary movement of a car for supplying power to supply power. The present invention relates to a non-contact power supply system including: a power receiving portion mounted on the car; a power transmission unit mounted in the elevator shaft; and a control device for controlling the ascending and descending of the car, in a non-contact power supply elevator for supplying power to the car by supplying power from the power transmission portion to the power receiving portion in a non-contact manner, wherein the control device ascends and descends the car in a section including a non-service floor and a service floor, wherein the non-service floor is a floor where passengers cannot get in and out of the car, the service floor is a floor higher than the non-service floor and where passengers can get in and out of the car, and the power transmission portion is provided at a floor higher in the service floor higher than the non-service floor and having a higher pass frequency through which passengers pass without getting in and out of the car.

Description

Non-contact power supply elevator

Technical Field

The invention relates to a non-contact power supply elevator.

Background

In recent years, with the advance of buildings, the stroke of elevators installed in the buildings has been required to be longer. A general elevator supplies power to devices in a car through a power supply line called a travelling cable suspended from the car. As the stroke of the elevator becomes longer, the trailing cable also becomes longer, so that the mass of the trailing cable increases, and beyond a certain length, the trailing cable may become unable to bear its own weight. Therefore, no trailing cable structure is desired in long-travel elevators.

Patent document 1 discloses a technique that does not require a method of supplying power to an in-car device using a traveling cable.

Patent document 1 discloses a non-contact power supply system including a power supply control means and an operation control means, wherein when the amount of charge of a battery has dropped to a certain value or less, the power supply control means selects, as a power supply destination, a power supply floor for stopping a car among power supply floors in accordance with the presence or absence of a hall call in a state where no passenger is present in the car; and an operation control means for moving the car to a power supply layer selected as a power supply target by the power supply control means to charge the battery, and returning the car to a normal operation when charging is completed, wherein when a hall call is registered, the power supply control means selects a power supply layer suitable for responding to the hall call from the power supply layers as the power supply target based on a positional relationship between a current position of the car and the registration layer of the hall call.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. 2017-57054

Disclosure of Invention

Technical problem to be solved by the invention

With the increase in the number of floors of such buildings, in elevators in which power is supplied by non-contact, power supply and storage are required to the car, but a large number of power transmission devices are required to supply power to the elevator over the entire elevator travel or the stopping floor. In addition, as buildings become more highly advanced, there are elevators in which a car is raised and lowered in a section including a stop floor (service floor) through which passengers can enter and exit the car and a passing floor (non-service floor) through which passengers cannot enter and exit the car.

However, patent document 1 shows that it is preferable to set the number of times of stopping the car to a floor where the number of times of stopping the car is significantly large, but does not show which floor should be set to the power supply floor in the non-contact power supply system of the elevator in the elevator having the service floor and the non-service floor.

In view of the above circumstances, an object of the present invention is to provide a non-contact power feeding elevator in which a non-contact power feeding system is installed and which has a service floor and a non-service floor, and which is provided with a power transmission device capable of reducing unnecessary movement of a car for charging.

Technical scheme for solving technical problem

The non-contact power supply elevator related by the invention comprises: a power receiving portion mounted on the car; a power transmission unit mounted in the elevator shaft; and a control device for controlling the ascending and descending of the car, in a non-contact power supply elevator for supplying power to the car by supplying power from the power transmission portion to the power receiving portion in a non-contact manner, wherein the control device ascends and descends the car in a section including a non-service floor and a service floor, wherein the non-service floor is a floor where passengers cannot enter and exit the car, the service floor is a floor higher than the non-service floor and where passengers can enter and exit the car, and the power transmission portion is provided at a floor higher in the service floor higher than the non-service floor and having a higher pass frequency through which passengers pass without entering and exiting the car.

Effects of the invention

According to the present invention, it is possible to provide a non-contact power supply elevator capable of reducing wasteful movement of a car for charging.

Technical problems, configurations, and effects other than those described above will be apparent from the following description of the embodiments.

Drawings

Fig. 1 is a schematic diagram showing a contactless power supply system according to embodiment 1.

Fig. 2 is a diagram showing a stop layer and a pass layer of the contactless power supply system according to embodiment 1.

Fig. 3 is a diagram showing a table for specifying the power supply layer of the power transmission unit of the non-contact power supply system according to embodiment 1.

Fig. 4 is a schematic view of the case where the non-contact power supply system according to embodiment 1 is applied to a plurality of elevators having different trips.

Fig. 5 is a schematic diagram of a non-contact power supply system according to embodiment 2 applied to a plurality of elevator structures.

Fig. 6 is a diagram showing a table for specifying the power supply layer of the power transmission unit of the non-contact power supply system according to example 2.

Fig. 7 is a table showing power supply levels when the usage of the elevator in the non-contact power supply system according to example 2 is changed.

Detailed Description

An example of an embodiment for carrying out the present invention will be described below with reference to the drawings. In the drawings, components having substantially the same function or configuration are denoted by the same reference numerals, and redundant description thereof is omitted.

Example 1

Fig. 1 is a schematic diagram showing a contactless power supply system according to embodiment 1. The configuration shown in fig. 1 is only an example, and may be a different configuration as long as the function of the elevator is not affected.

As shown in fig. 1, a non-contact power supply system 1 according to embodiment 1 includes: a car 40 that ascends and descends in an elevator shaft 45; a counterweight 33 that moves up and down together with the car 40; and a rope 32 connected at one end to the car 40 and at the other end to a counterweight 33. The car 40 is provided with doors 43 for passengers to enter and exit the car. In the present embodiment, the car 40 is a car for transporting passengers, but the car is not limited to this and may be a car for transporting only goods.

The car 40 is guided by the rope 32 by power of the hoisting machine 31 and ascends and descends in the vertical direction on the paper surface. The car 40 is controlled to ascend and descend in the elevator shaft 45 by a control device not shown.

Power transmission units

1001, 1015, and 1019 are installed on floor 1, floor 15, and floor 19, respectively. Similarly,

power cables

1201, 1215, 1219,

power supplies

1301, 1315, and 1319 have the same basic functions, and therefore only power transmission unit 1001, power cable 1201, and power supply 1301 are described.

Power transmission unit 1001 is installed in floor 1, which is a lobby floor. The power transmission unit 1001 is configured by a coil, an inverter, a capacitor, and the like, and converts electric power supplied from the power supply 1301 into a high frequency to generate a magnetic field.

The car 40 includes a charge/discharge circuit 21, an electric storage device 22, and a power receiving unit 20 in an upper portion thereof, and the power receiving unit 20 includes a coil, a capacitor, a rectifier, and the like.

For example, when power is supplied to floor 1, power receiving unit 20 receives the magnetic field from power transmitting unit 1001 and receives power. The charge/discharge circuit 21 supplies electric power used by the power storage unit 22 and the car 40. The storage unit 22 is a storage device such as a lead storage battery, a nickel-metal hydride battery, a lithium ion battery, or a capacitor.

The power supply 1301 is an AC200V or 400V, DC or the like. Power supply cable 1201 is a wire for transmitting electric power, signals, and the like from power supply 1301 to power transmission unit 1001. The control unit 30 controls the hoisting machine 31, the power transmission unit 1001, the power reception unit 20, and the like.

Fig. 2 is a schematic diagram showing a service floor, a non-service floor, and an installation floor of a power transmission unit of an elevator using the non-contact power supply system according to embodiment 1. The service floors are floors where passengers can enter and exit the car 40, and the non-service floors are floors where passengers cannot enter and exit the car 40.

In this embodiment, an elevator described as an example includes: the elevator has a low floor area 90 composed of a plurality of service floors, a passing area 94 composed of a plurality of non-service floors, and a high floor area 98 composed of a plurality of service floors, and has a trip from floor B1 (floor 1) to floor 19, which will be described below.

The low floor area 90 is a floor near a lobby floor such as 1 st floor or the underground. The lobby floor is a floor having a large space such as a corridor, a control room, and a reception room attached to an entrance in a building with a large traffic flow such as a theater and a hotel, and is a floor having a reception room in the hotel. Here, floor B1 (underground level 1) and floor 1.

The passing area 94 is a floor where the elevator (sometimes) does not stop, i.e., 2 th floor to 14 th floor. For the sake of explanation, 2-stories and 14-stories are used, but there may be no stories, for example, a section of the building that is at a height equal to or greater than the height from the average floor surface to the ceiling.

The high-rise area 98 is a high-rise above the passing area 94, and the floors where the elevator stops for service (passengers can enter and exit the car) are 15 th to 19 th.

Power transmission units

1001, 1015, and 1019 are shown as power transmission units installed on

floors

1, 15, and 19, respectively, and are shown as floors (power supply floors) on which power transmission can be performed.

Power transmission unit 1001 is installed in a hall floor with many users. Similarly, power transmission unit 1019 is installed in a restaurant capable of viewing, a highest floor that is a floor with many visitors, or a highest floor that is farthest from a lobby floor. Further, the 17 th floor is a floor having the largest number of uses except the highest floor, that is, a floor having the largest number of stops.

Next, the procedure for determining the installation layer of the power transmission unit 1015 will be described below.

Fig. 3 is a table showing the prioritization of the settings of the power supply layers. First, floors with a high frequency of stops (a high number of stops) are predicted from a table.

Column a is the floor at which the elevator stops (the floor at which passengers can use the elevator).

b is the number of stores in a commercial building, the number of houses in a residential apartment, and the number of guest rooms in a lodging facility.

The c column is the prediction of elevator using number of people, and the number of people can be predicted according to the number of shops, the type of the shops, the number and the type of the rooms, the number of guest rooms and the type of the rooms. For example, a store that is predicted to require a reservation in a store may have fewer guests than a mass vendor. The number of the users can be predicted to be more for one person in the floors with more users in one room, and more for one family in the floors with more types of the users in two or three rooms. The number of persons can be predicted by the size of guest rooms and the number of beds in accommodation facilities such as hotels.

The column d is a column in which, out of the predicted number of users of the elevator, for example, when the building is a restaurant or a retail store, considering that many users visit only one arbitrary floor, and rarely visit a plurality of times, it can be predicted that the number of uses (the use of visiting the floor and the use of leaving the floor) is about twice the number of users. In the case of a residential apartment, the number of times family members go out is determined. In the case of a lodging facility, a single person may be taken out for sightseeing, a restaurant, a gymnasium, a hotel facility such as a swimming pool, and the like, and in these cases, the number of uses is predicted to be several times the number of uses. In fig. 3, the floor with the predicted high utilization number in the high-rise area 98 is floor 17.

The e-column usage count ranking is performed by ranking the number of usage counts in the service level of the high-level area 98.

The f columns show the pass frequency. The pass frequency means a frequency of passing through a service floor without passing passengers into and out of the car. In this embodiment, the frequency of elevator passage is predicted from the number of uses of each floor, and for example, the sum of the numbers of uses of floors higher than the stop floor is predicted as the frequency of passage. This is supposed to be the case in an elevator having a low-floor area 90, a pass-through area 94, and a high-floor area 98, in which a shuttle operation is performed between any floor in the low-floor area 90 and any floor in the high-floor area 98.

The setting precedence of the p columns is the ranking of floors to be provided with the power transmission unit, and the rankings are performed in descending order of the passing frequency.

Next, power supply control in the case where a power transmission unit is provided at a floor where the car passes through frequently will be described.

For example, when it is predicted that the power transmission unit 10 is provided on the floor 15 where the passing frequency of the car 40 is the highest, the control unit moves the car 40 to the floor 15 and the power transmission unit 10 starts supplying power when the car 40 is on standby on the floor 17 and the power transmission unit 10 is not provided on the floor 17.

Here, since the floor lower than the 17 th floor has a high passing frequency, the car 40 is likely to move to the lower floor thereafter. However, if the power transmission unit 10 is installed at the 18 th floor and the car 40 is moved to the 18 th floor for charging, the possibility that the next car call will move in the opposite direction is high, and therefore the movement may become useless for the next car call.

On the other hand, as shown in the present embodiment, since the power transmission unit 10 is installed at the 15 th floor having a high pass frequency, since the next call is likely to be directed to a floor lower than the 17 th floor, the next call can be handled even for the movement for charging, and since the next elevator ascending and descending direction is an undesired ascending and descending direction for supplying power to the elevator, unnecessary power consumption is reduced during the ascending and descending in the undesired direction, and power supply is enabled.

Since the 17 th floor in this embodiment is the floor having the highest stop frequency, the frequency of moving from the 17 th floor to the lower floor is higher than the frequency of moving to the upper floor, and therefore, it is considered that the pass frequency of floors lower than the 17 th floor is higher. In this way, a floor lower than the floor with the highest stop frequency is considered as a floor with a high pass frequency.

That is, the power transmission unit 10 is installed in the 15 th floor, which is predicted to have the highest elevator passing frequency, so that the opportunity of power supply is improved. In view of the utilization frequency and the passing frequency prediction, the power transmission unit 10 is installed on a floor having a high passing frequency in the high-rise area 98, so that the opportunity of power supply can be increased without impairing convenience.

Fig. 4 shows a cage Elevator (shuttleevelor) having a passage floor in which two elevators A, B are a low-rise Elevator a from the B1 th floor to the 13 th floor and a high-rise Elevator B from the B1 th floor to the 19 th floor, respectively.

In the low-rise elevator a,

power transmission units

1001A and 1013A are provided on floor 1 and floor 13 of the lobby floor, respectively. When the floor predicted to have the maximum number of uses in the high-rise area is floor 11, power transmission unit 1010A is installed on floor 10 below floor 11.

Middle-floor elevator B is provided with

power transmission units

1001B and 1019B on floor 1 and floor 19 of the lobby floor, respectively. When the floor whose maximum number of uses is predicted in the high-rise area other than the highest floor is floor 17, power transmission unit 1015B is installed on floor 15, which is lower than floor 17.

With the above structure, at least one power transmission unit is provided on a floor higher than the passing area and having a high passing frequency, so that power can be supplied earlier when the remaining amount of the battery becomes small, thereby reducing the chance of service stoppage and improving convenience.

Example 2

Fig. 5 shows an example of a method for determining a power supply floor on which a power transmission unit is installed when there are a plurality of elevators.

The three elevators D, E, G are zoned elevators having passage floors from floor B1 to floor 19.

Elevator D, E, G has

power transmission units

1001D, 1001E, and 1001G on lobby floor 1.

Power transmission units

1019D, 1019E, and 1019G are provided at the highest floor. In this example, when the elevator D, E, G is disposed relatively near in the building, the floor predicted to have the highest number of uses in the high-floor area excluding the highest floor is floor 17.

Fig. 6 is a table showing the pass frequency ranking of the settings of the power supply layers. When the power supply floor is set for the elevator D, E, G, the power supply floors are set for different floors in the order of the passage frequency of the table.

In the elevator D, the power transmission unit 1015D is installed at a floor 15 that is lower than the floor 17 excluding the highest floor and has the highest passage frequency ranking.

In elevator E,

power transmission units

1016E and 1017E are provided for 16 th floor with a high passing frequency ranking and 17 th floor with the highest utilization number, other than 15 th floor determined to be provided in elevator D. By providing the power transmission unit in this manner, when the car is on standby at the 17 th floor, the car can be charged at the 17 th floor, or the car can be moved to the 16 th floor to charge the 16 th floor when the next call from the lower floor is made, so that the range of operation control is provided, and most efficient elevator dispatching control can be performed.

In the elevator G, a power transmission unit 1017E that enables the elevator to transmit power even during the movement from the 15 th floor to the 17 th floor, which have a high passing frequency ranking, is provided in a range including floors lower than the 17 th floor, which has the largest number of uses.

With the above configuration, the power transmission unit is preferentially installed on the floor having a high passing frequency, and the installation condition of the power transmission unit is changed for each elevator, so that it is possible to charge the elevator earlier when the remaining battery capacity is small. By selecting the most suitable power transmission part for the elevator running according to the difference of the target floors, the chance of stopping other elevator service is reduced, and the convenience is improved. In addition, by applying power transmission unit 1017E, which can transmit power even during movement, the opportunity for power transmission is further increased, and a reduction in transport efficiency due to insufficient power supply can be suppressed.

Further, the table may be updated according to a change of the visitor due to, for example, a renovation of the store, the floor with a high number of usage may be determined, and the installation floor may be changed or set. Fig. 7 shows a state after the table shown in fig. 6 is updated. The floor with the largest number of utilization is changed from floor 17 to floor 15. At this time, the floor on which the power transmission unit 1016E of the elevator E (fig. 5) is installed is changed to floor 15. With the above configuration, when the tenant in the building and the usage mode are changed, convenience can be maintained without reducing the frequency of power supply to the elevator by changing the power supply layer.

The number of times of stopping the elevator for supplying power is predicted or eliminated from the utilization number. In addition, the number of utilizations is not limited thereto. For example, the number of times an elevator is called may be the number of times whether or not a person is available, or the number of times the elevator is stopped at the floor. The frequency of passage is not limited to the frequency of elevator ascending and descending from the floor, and may be the time of passage.

The above-described structures, functions, processing units, and the like may be partially or entirely realized by hardware, for example, by integrated circuit design or the like.

The control lines and information lines that must be shown on the product are not limited to these. Virtually all structures can be considered interconnected.

Description of the reference symbols

1001 power transmission unit, 1301 power supply, 20 power receiving unit, 21 charging and discharging circuit, 22 power storage device, 30 control unit, 31 traction machine, 32 rope, 33 counterweight, 40 car, 43 door, 45 elevator shaft, 90 low floor area, 94 passing area, 98 high floor area, 1F 1 floor, B1F underground 1 floor.

Claims

1. A contactless electricity-supplying elevator comprising:

a power receiving portion mounted on the car;

a power transmission unit mounted in the elevator shaft; and

a control device for controlling the lifting of the cage,

in a non-contact power supply elevator for supplying power to the car by supplying power from the power transmission unit to the power reception unit in a non-contact manner,

the control device raises and lowers the car in a section including a non-service floor and a service floor, wherein the non-service floor is a floor where passengers cannot get in and out of the car, the service floor is a floor higher than the non-service floor and where passengers can get in and out of the car,

the power transmission unit is provided in a floor having a higher frequency of passage in a service floor higher than the non-service floor, and the frequency of passage means a frequency of passage in the service floor without passing a passenger in and out of the car.

2. Contactless power supply elevator according to claim 1,

the power transmission unit is provided on a floor lower than a service floor having the largest number of times of stop among service floors higher than the non-service floor.

3. Contactless power supply elevator according to claim 1,

when the car is waiting at the service floor higher than the non-service floor and the power transmission unit is not provided at the floor on which the car is waiting, the control device moves the car to the floor on which the power transmission unit is provided.

4. Contactless power supply elevator according to claim 1,

the power transmission unit is a continuous power transmission unit that can transmit power even while the car is moving.

5. Contactless power supply elevator according to claim 4,

the power transmission portion is provided to span a plurality of floors.

6. Contactless power supply elevator according to claim 1,

a plurality of the cages are arranged at the same time,

the power transmission units provided in the elevator shafts in which the plurality of cars are raised and lowered are separately set at different floors in each of the elevator shafts.

7. Contactless power supply elevator according to claim 1,

the power transmission units are arranged in descending order of the passage frequency.