JPS62240284A - Elevator device for clean room facility - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Technical field to which the invention pertains]

The present invention relates to an elevator system for transporting people and goods in a clean room facility where clean rooms are installed on upper and lower floors of the same building.

[Prior art and its problems]

In recent years, the above-mentioned clean rooms have come to be widely applied to factories in the electronic industry, mainly semiconductor manufacturing, and the food industry. In addition, due to the expansion of the scale of production equipment, in the clean room facility in the factory where clean rooms are configured on the upper and lower floors of the same building, an elevator is attached to the building to connect the clean rooms on each floor, and this elevator is used to transport workers and materials. , cA products, and other goods are often transported. By the way, in conventional elevator equipment for this type of clean room facility, although the elevator cage is equipped with a normal ventilation device, no consideration is currently taken to actively purify the air inside the cage. It is. For this reason, when workers use an elevator to go back and forth between the upper and lower floors of the clean room, the worker first changes from the work clothes worn in the clean room to regular work clothes, and then transfers to the elevator. When re-entering another clean room, change from regular work clothes to clean room work clothes, and remove dust from clothes in the air shower room located adjacent to the clean room entrance. Entry procedures are in place, including entering a clean room. However, as described above, changing work clothes and taking an air shower each time entering and exiting the clean room is time-consuming and troublesome.

[Purpose of the invention]

This invention was developed in consideration of the above points, and it solves the difficulties of the conventional method of coming and going between clean rooms as described above. Eliminate troublesome work and facilitate the movement of workers between clean rooms.
Clean room h where goods can be transferred freely
The purpose is to provide an elevator Vz iW for t = .

[Key points of the invention]

In order to achieve the above object, the present invention provides a clean unit for blowing and supplying clean air into the elevator cage to maintain the cleanliness inside the cage at approximately the same level as on the passageway of the clean room. By maintaining a level of cleanliness, workers can come and go between the clean rooms on the upper and lower floors using elevators, and items can be transferred freely without changing work clothes or taking an air shower. .

[Embodiment of the Invention] FIG. 1 and FIG. 2 respectively show a configuration diagram of an elevator car and a configuration diagram of the entire elevator system according to an embodiment of the present invention. First, FIG. 2 shows the configuration of the entire elevator system. In the figure, l is a building, and clean rooms 2 and 3 are configured on the upper and lower floors of the building.
Furthermore, an elevator device 4 is attached to the same building 1 connecting the clean rooms 2 and 3 on each floor. The elevator device 4 is configured such that a cage 6 that moves up and down inside an elevator room 5 formed in a building 1 is raised and lowered by a hoisting machine 8 installed in a machine room 7, and a clean room 2.3 on each floor. A landing door 9 is provided between the elevator room 5 and the elevator room 5. In addition, 10 is a base rod from which the cage 6 is suspended, and 11 is a counterweight. 12 is a cage buffer. In addition, the elevator room 5
On the other hand, an exhaust duct 13 is drawn out from the bottom of the room, and is configured to draw and exhaust room air to the outside of the system via an exhaust blower 14. On the other hand, for the elevator cage 6, as shown in FIG. A clean unit 20 that combines a blower 18 and a HEPA filter 19 is installed on the ceiling. Here, the HEPA filter 19 is connected to the discharge side of the blower 18 and installed at the air outlet to the cage chamber 15, and the cage chamber 15 has a free access floor 21 on the floor where air can freely pass through. was made in '46H. Note that 22 is a door of the cage. By operating the blower 18 of the clean unit 20 with this configuration, the air discharged from the blower passes through the HEPA filter 19 to remove dust as shown by arrow A, becomes clean air, and is blown into the cage chamber 15. The air is circulated so as to pass through the free access floor 21, pass through the circulation air passage 17, and return to the blower 18. By supplying clean air into the cage chamber 15 in this manner, dust attached to workers' work clothes, articles, etc., and dust generated from these and floating in the room are removed together with the clean air flow. The dust is immediately discharged outside the cage room to remove dust, and the inside of the cage room is maintained at a high level of cleanliness (at the same level as the passageway inside the clean room). Workers who come and go between the clean room 2 on the first floor and the clean room 3 on the lower floor do not need to change their work clothes each time or take a clean shower when re-entering the clean room, as was the case in the past. , goods can be transferred freely.Although Fig. 1 shows a down-flow one-way system (vertical laminar flow system) in which clean air is blown down from the ceiling of the cage chamber 15 to the floor, the system is not limited to this. Alternatively, a cross-flow one-way system (horizontal laminar flow system), a conventional system (turbulent flow system), etc. may be adopted.On the other hand, returning to FIG.
Indoor air is sucked and exhausted by the blower 14 through the elevator 14 and maintained at negative and positive levels at all times, so that dust generated in the elevator room during the up-and-down movement of the cage 6 is quickly removed to the outside of the system through the exhaust duct 13. Since the elevator chamber is maintained at a negative pressure, it is possible to effectively prevent dust from entering the clean room or the cage chamber. Note that this exhaust duct 13 may be drawn out from the upper part of the elevator room 5 and provided. [Effects of the Invention] As described above, according to the present invention, the elevator cage is equipped with a clean unit that blows and supplies clean air into the cage interior, thereby constantly maintaining the interior of the elevator cage at a high level of cleanliness. Therefore, when elevators are used to move workers and goods between the clean rooms on the upper and lower floors, it is no longer necessary to change work clothes or take an air shower when re-entering the clean room. This allows for free movement and transportation without any hassle.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a cage of an elevator system according to an embodiment of the present invention, and FIG. 2 is a block diagram of the entire elevator system. In each figure, 1: Building, 2: Clean room on the upper floor, 3: Clean room on the lower floor, 4: Elevator Wi, 5: Elevator room, S: Elevator cage, 13: Exhaust duct, 15:
Cage room, 17: vii ring ventilation air channel 8: Blower, 19
: HEPA filter, 20: Clean unit, A: Clean air. Figure 1: Improper tact Figure 2:

Claims (1)

[Claims] 1) In an elevator system for a clean room facility that connects clean rooms configured on the upper and lower floors of a building for the movement of workers and the transfer of goods, an elevator cage is provided with clean air into the cage interior. An elevator device for a clean room facility, characterized by being equipped with a clean unit that blows out and supplies. 2) In the elevator system according to claim 1, the clean unit includes a blower installed in the circulation air passage of the cage room, and a HEPA filter installed at the air outlet into the cage room in line with the discharge side of the blower. An elevator device for clean room facilities, characterized by comprising: 3) In the elevator system according to claim 1, the elevator room of the building that serves as the elevator car's ascending and descending passage is provided with an exhaust duct for sucking and exhausting indoor air from the elevator room to the outside of the system. Features: Elevator equipment for clean room facilities.