Variable hood apparatus for kitchen

Abstract

A variable hood apparatus includes a bent column fixed to a wall of the kitchen, a support body detachably mounted on the bent column and configured to be capable of adjusting a height level thereof, a first horizontal bar supported by the support body and configure to be rotatable, a slider mounted on the first horizontal bar and configured to be slidable, a second horizontal bar supported by the slider and configured to be rotatable, a foldable hood mounted on an extension of the second horizontal bar, the foldable hood being configured to be unfolded while being used, an exhaust pipe which is connected to the foldable hood and which extends to an outside, and an exhaust mechanism generating an airflow which is formed inside the exhaust pipe and which is directed toward the outside, thereby inducing a negative pressure.

What is claimed is: 
     
         1 . A variable hood apparatus for a kitchen, the variable hood apparatus comprising:
 a bent column formed by pressing a metal plate and having a predetermined cross-sectional shape in a longitudinal direction, the bent column being fixed to a wall of the kitchen and being configured to provide a supporting force;   a support body detachably mounted on the bent column and configured to be capable of adjusting a height level thereof;   a first horizontal bar which is supported by the support body and which extends in a horizontal direction, the first horizontal bar being configured to be rotatable while the horizontal bar maintains a horizontal state;   a slider mounted on the first horizontal bar and configured to be slidably movable along a longitudinal direction of the first horizontal bar;   a second horizontal bar which is supported by the slider and which extends in the horizontal direction, the second horizontal bar being configured to be rotatable while the second horizontal bar maintains the horizontal state;   a foldable hood mounted on an extension end portion of the second horizontal bar, the foldable hood being configured to be unfolded while being used and to be folded while being not used;   an exhaust pipe which is connected to the foldable hood and which extends to an outside; and   an exhaust mechanism configured to generate an airflow which is formed inside the exhaust pipe and which is in a direction toward the outside, thereby inducing a negative pressure in the foldable hood.   
     
     
         2 . The variable hood apparatus of  claim 1 , wherein the bent column is fixed vertically and has a plurality of locking holes spaced apart from each other in a vertical direction,
 wherein the support body comprises:   a main body provided with a support hole having a predetermined inner diameter; and   a locking bracket fixed to a first side of the main body and supported by the plurality of locking holes,   wherein the first horizontal bar has a rotary shaft inserted into the support hole such that the first horizontal bar is axially rotatable with respect to the support hole, and has an extension slit which extends in an extending direction of the first horizontal bar and which has a predetermined width,   wherein the slider comprises:   a traveling guider configured to be movable along a longitudinal direction of the extension slit while being inserted into the extension slit;   a cover plate which is formed integrally with the traveling guider and which is in surface contact with a top surface of the first horizontal bar; and   a support pin fixed perpendicular to the cover plate,   wherein the second horizontal bar is linked to the support pin of the slider such that the second horizontal bar is rotatable with respect to the support pin.   
     
     
         3 . The variable hood apparatus of  claim 1 , wherein the exhaust pipe is a flexible bellows, an extension end portion of the exhaust pipe is provided with a fixing block that is capable of being fitted into and fixed to a window frame, and the exhaust mechanism comprises a blower and an air guiding pipe which is connected to the blower and inserted into an inside of the exhaust pipe, the air guiding pipe being configured to eject air supplied from the blower to the inside of the exhaust pipe. 
     
     
         4 . The variable hood apparatus of  claim 3 , wherein a venturi portion is further provided inside the exhaust pipe, and the air guiding pipe is disposed on a downstream of the venturi portion. 
     
     
         5 . The variable hood apparatus of  claim 1 , wherein the foldable hood comprises:
 a head portion fixed to an end portion of the second horizontal bar and connected to the exhaust pipe; and   a wing portion positioned below the head portion, the wing portion being configured to guide gas to be exhausted to the head portion by being unfolded while being used, and the wing portion being folded while being not used.   
     
     
         6 . The variable hood apparatus of  claim 5 , wherein the wing portion comprises a plurality of split wings hinge-connected to the head portion and configured to be rotatable up and down, the plurality of split wings being configured such that opposite end portions in a side direction thereof are in close contact with each other while being rotated upward, thereby maintaining an unfolded state. 
     
     
         7 . The variable hood apparatus of  claim 5 , wherein the wing portion comprises:
 a plurality of fixing ribs which is fixed to the head portion and which extends in a radial direction around the head portion, and which is spaced apart from each other by predetermined intervals;   a plurality of rotation ribs respectively pin connected to the plurality of fixing ribs and configured to be rotatable up and down;   a plurality of rib fixing mechanisms configured to enable the plurality of rotation ribs to maintain an unfolded state when the plurality of rotation ribs is rotated upward; and   a heat-resistant light permeable fabric fixed to the plurality of fixing ribs and the plurality of rotation ribs, the heat-resistant light permeable fabric being configured to be unfolded while the plurality of rotation ribs is rotated upward, thereby guiding the gas to be exhausted to the head portion.   
     
     
         8 . The variable hood apparatus of  claim 7 , wherein the plurality of rib fixing mechanisms comprises:
 a plurality of arcuate-shaped rods having a predetermined curvature and respectively fixed to the plurality of rotation ribs;   a plurality of ratchet fingers respectively mounted on the plurality of arcuate-shaped rods, the plurality of ratchet fingers being configured to be rotatable; and   a plurality of locking tubes supported by the head portion and providing a plurality of passages through which the plurality of arcuate-shaped rods respectively passes, the plurality of locking tubes being configured such that inner portions of the passages are respectively provided with a plurality of toothed portions, and the plurality of toothed portions being configured to be locked on the plurality of ratchet fingers, respectively, such that the plurality of rotation ribs is prevented from being moved downward.