JPH1087211A - Elevator running system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To seal a hoistway by a car so as to prevent the diffusion of smoke by running, when a fire occurs, the car to an escape floor and then escaping the car to a floor surface upper by two floors than the floor of the fire based on an operation signal from a smoke detector provided in each floor. SOLUTION: When a fire occurs in first floor surface 6, a car 1 is run in a manner specified according to the occurrence of a fire based on an operation signal from a smoke detector 2 installed in the vicinity of a landing. The car 1 is then run to a third floor surface 8 and stops after being placed on standby on the third floor surface 8 until the operation of the smoke detector 2 comes to an end. Thus, the car 1 seals a hoistway to prevent the diffusion of smoke. Since the probability of entangling a floor directly above the floor of the fire in the fire is very high, damage in the elevator side is also reduced by running the elevator to a floor surface upper by two floors than the floor of the fire. Further, since a function is provided only by installing an elevator running circuit and the smoke detector 2, an elevator running system is cost-effective.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator operating method suitable for preventing smoke flowing into a hoistway from being diffused in a building fire.

[0002]

2. Description of the Related Art According to Japanese Patent Application Laid-Open No. 58-52171, an operating range in the event of a fire is such that a car is driven to a predetermined floor, and the car is stopped at the predetermined floor after the door is closed. However, no consideration was given to reducing damage in the event of a fire.

[0003] JP-A-5-319721, JP-A-6-72657,
JP-A-7-25559

[0004]

In the above-mentioned prior art, there is a problem that it is impossible to shut off smoke which may cause a secondary disaster when a fire occurs.

[0005] It is an object of the present invention to provide an elevator operating system which can prevent the diffusion of smoke by closing a hoistway with a car.

[0006]

In order to solve the above-mentioned problem, after a car is operated to an evacuation floor in the event of a fire, a secondary disaster in the event of a fire is triggered by an operation signal emitted from a smoke detector provided on each floor. In order to prepare for possible smoke, a means was adopted in which the car was evacuated to the second floor above the fire occurrence floor (or the second floor below) to suspend operation.

[0007] The floor immediately above (or directly below) the fire floor
Decided to drive the elevator upstairs (or downstairs) above the floor where the fire occurred because of the possibility of getting caught in a fire.

When a fire occurs, the car is driven to the evacuation floor and the door is opened according to an operation command from a fire alarm or the like installed in the building. After the door is closed, the car is driven up to the second floor above the fire floor (or the second floor below) by the operation command from the smoke detector installed on each floor, the operation is stopped without opening the door, and the hoistway is closed. Even if there is a lot of smoke, it is possible to sufficiently prevent the diffusion of the smoke.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described with reference to FIGS.
This will be described with reference to FIG. FIG. 1 is a flowchart illustrating the operation of an elevator according to an embodiment of the present invention.

(1) First, at step S1, it is checked whether or not a fire has occurred. If a fire has occurred, the operation proceeds to the next step. If not, the normal operation of step S2 is continued.

(2) Next, in step S3, it is checked whether or not the fire control operation has been completed. If completed, the process proceeds to the next step. If not completed, the fire control operation in step S4 is continued.

(3) Next, in step S5, it is checked whether or not the smoke detector is activated. If it is activated, the process proceeds to the next step. If not, the evacuation floor is completed with the fire control in step S6 completed. To continue the standby state.

(4) Next, in step S7, the vehicle is driven to the second floor above the operating level of the smoke detector according to the smoke detector operating signal provided on each floor and is kept on standby with the door closed, and the operation is suspended in step S8. To continue.

FIG. 2 shows the relationship between the position of the car and the smoke detector constructed as described above. The car 1 and the smoke detector 2 installed at each floor and the floor door 3 are shown. , Hoistway cave 4, rope for moving car 1 up and down 5,
The first floor 6, the second floor 7, the third floor 8, and the fourth floor 9 are shown. When a fire occurs on the floor 6 on the first floor, the car 1 is driven to the floor 8 on the third floor after completing a predetermined operation at the time of the fire according to the operation signal of the smoke detector 2 installed near the landing. Until the operation is completed, the operation is suspended after waiting on the floor 8 on the third floor.

According to the above-described embodiment of the present invention, after the predetermined fire control operation is completed, the elevator is operated on the second floor above the smoke detector operation floor by the smoke detector operation signal provided on each floor, so that the smoke is eliminated. Diffusion prevention can be performed.

[0016]

According to the present invention, it is possible to prevent the diffusion of smoke by closing the hoistway with the elevator car in response to an operation command from the smoke detector installed on each floor. In addition, the floor directly above (or directly below) the fire occurrence floor is very likely to be involved in a fire, so by driving the elevator to the upper second floor (or lower second floor) above the fire occurrence floor, the elevator side Damage can be reduced. Further, according to the present invention, the function can be exhibited only by maintaining the operation circuit of the elevator and installing the smoke detector, so that the burden is economically small.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a method of operating an elevator during a fire.

FIG. 2 is an explanatory diagram showing a relationship between a smoke detector and a car position.

[Explanation of Signs] 1 ... car, 2 ... smoke detector, 3 ... floor door, 4 ... hoistway wall, 5 ... rope, 6 ... 1st floor, 7 ... 2nd floor, 8 ...
3rd floor, 9 ... 4th floor.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hidenori Sekine 1070 Ma, Hitachinaka City, Ibaraki Prefecture Inside the Mito Plant of Hitachi, Ltd. (72) Inventor Katsuharu Ogawa 832 Horiguchi 832 Hachiguchi, Hitachinaka City, Ibaraki Pref. Katsuta Hitachi Mito Engineering Co., Ltd.

Claims (2)

[Claims] 1. An elevator which has an operation function of driving a car to a predetermined floor and standing by when a building fire occurs and having a function of receiving an operation signal of a smoke detector installed on each floor, the operation is completed. An elevator operating method, wherein the car is operated on a designated floor and at least two floors above the floor on which the smoke detector has been operated, and waits. 2. The system according to claim 1, wherein when the operating floor of the smoke detector is a top floor or a floor immediately below the top floor, the smoke detector is operated on at least two lower floors counted from each floor and to a designated floor. Elevator operation method for waiting and waiting.