Dumb waiter

Solution

Product specification

Youngjin Elevator Co., Ltd. developed the existing manual opening type DUMB WAITER DOOR as an automatic opening method. The car door interlocking device applies the principle of opening the LANDING (HALL) DOOR and has the advantage that it does not require a LANDING DOOR MOTOR, so accidents or injuries can be largely ignored in advance.

T Y P E

When boarding

FLOOR TYPE

WINDOW TYPE

Product Features

Type	Load weight (Kg)	Speed (m/min.)	Hoistway	Purpose
WINDOW	80	120	One-way Penetrating	General restaurant
	100
	150
	200
	250
FLOOR	300			Office of Education standard type
FLOOR	400			Office of Education standard type

FLOOR TYPE
Office of Education standard type

Horizontal

Vertical

Elevator Specifications			CAR INSIDE			Hoistway (Penetrating Type)		Hoistway (one-way)		Required dimensions for hoistway section
Load capacity	Speed	hoisting machine	W1	D1	H	W2	D2	W2	D2	PIT	Top floor	Machine room
300KG	20MIN	2.2KW/3.7KW	1000	1200	1200	1800	1700	1600	1800	700 / 3000 or more / 1500 or more
			1100	1000		1900	1500	1700	1600
			1200	1000		2000	1500	1800	1600
400KG	20M/MIN	2.2KW/3.7KW	1000	1500		1800	2000	1600	2100
			1000	1400		1800	1900	1600	2000
			1100	1400		1900	1900	1700	2000
			1200	1300		2000	1800	1800	1900
			1300	1200		2100	1700	1900	1800
			1400	1100		2200	1600	2000	1700

WINDOW TYPE
General restaurant standard type

Horizontal

Vertical

Elevator Specifications			CAR INSIDE			Hoistway (Penetrating Type)		Hoistway (one-way)		Required dimensions for hoistway section
Load capacity	Speed	hoisting machine	W1	D1	H	W2	D2	W2	D2	PIT	Top floor	Machine room
80KG	20M/MIN	0.75KW	700	700	600 ~ 1000	1300	1000	1100	1300	None/2500 or more/1200 or more
100KG	20M/MIN	1.5KW	800	800		1400	1100	1200	1400
150KG	20M/MIN	1.5KW	900	900		1500	1200	1300	1500
200KG	20M/MIN	2.2KW	1000	1000		1600	1300	1400	1600
250KG	20M/MIN	2.2KW	1000	1000		1700	1400	1500	1700

Effects of LML

Technical effect

Exterior door [Motorless] Various wires, switches, and wire ropes are not required
Control panel Control panel simplification by eliminating the need for door motors, signal relays and magnetic contactors on each floor
Maintenance Stable door opening and closing with double interlocking structure, material cost reduction (dumb waiter is single interlocking structure)
Delivery time shortened Shorten production, build time and simplify the installation process

Economic effect

Safety Accident Prevention Prevention of industrial accidents → reduction of human and economic loss
Cost Reduction Reduction of manufacturing and installation costs by simplifying the product by eliminating the external door motor
Convenience, speed Due to the automatic door function, demand for dumb waiters is expected in hospitals, schools, restaurants, hotels, etc.

Patent acquisition

Patent No. 10-0927651 (Elevator door opening and closing device)

Quality Certification

ISO9001 (acquired on June 23, 2005)

Acquired safety evaluation certificate from Korea Elevator Safety Management Institute

NO.C09014-001
Cargo elevator with lift opening and closing interlocking switchgear

NO.C09014-002
Dumb waiter with lift opening and closing interlocking device

Major supplier

Office of Education, government offices, canteen, McDonald’s, Paris Baguette, general restaurant