Pollutant removing device and oblique single air curtain range hood using the device

Abstract

The present invention relates to a pollutant removing device and an oblique single air curtain range hood using the device. The rear side of the range hood is adjacent to a wall and the range hood includes an air blow device and a suction device. The air blow device has an elongate air blow slot that is provided in front of a counter top and through which air is blown upward. The suction device is located above the counter top and includes an elongate suction opening that is connected with a suction machine to produce upward suction force. The elongate suction opening is parallel to the elongate air blow slot in a way that the elongate suction opening is above and spaced from the elongate air blow slot toward the wall. By means of the operation of the suction machine, an oblique air curtain that is nearly two-dimensional is formed between the elongate suction opening and the elongate air blow slot. The gas or harmful gas located between the oblique air curtain and the wall can be sucked via the elongate suction opening. Consequently, the escape of pollutants is decreased and the ability against interference of sucking harmful gas resulted from ambient air turbulence can be enhanced.

1 . A pollutant removing device, the back of which is adjacent to a wall, comprising:
 an air blow device having an elongate air blow slot that is located in front of a pollutant discharge outlet of a counter top and through which air is blown upward; and   a suction device located above the counter top and including an elongate suction opening that is connected with a suction machine, where the elongate suction opening is parallel to the elongate air blow slot in a way that the elongate suction opening is above and spaced from the elongate air blow slot toward the wall, so that an oblique air curtain that is nearly two-dimensional is formed between the elongate suction opening and the wall when the suction machine is operated to decrease gas escape and enhance the ability against the inference resulted from ambient air turbulence.   
   
   
       2 . The device as claimed in  claim 1  further including another elongate air blow slot that is parallel to the elongate air blow slot, located at the rear of the pollutant discharge outlet of the counter top, and through which air is blown upward. 
   
   
       3 . The device as claimed in  claim 1  further including a flange that is extended from one side of the elongate suction opening toward the wall. 
   
   
       4 . The device as claimed in  claim 2  further including a flange that is extended from one side of the elongate suction opening toward the wall. 
   
   
       5 . The device as claimed in  claim 3 , wherein the flange includes a fixing plate and a telescopic plate; the fixing plate is extended from one side of the elongate suction opening and the telescopic plate is able to be extended or retracted relative to the fixing plate. 
   
   
       6 . The device as claimed in  claim 4 , wherein the flange includes a fixing plate and a telescopic plate; the fixing plate is extended from one side of the elongate suction opening and the telescopic plate is able to be extended or retracted relative to the fixing plate. 
   
   
       7 . The device as claimed in  claim 1 , wherein the direction in which the air is blown from the elongate air blow slot is toward the wall and is tilted relative to the counter top. 
   
   
       8 . The device as claimed in  claim 2 , wherein the direction in which the air is blown from the elongate air blow slot is toward the wall and is tilted relative to the counter top. 
   
   
       9 . A oblique single air curtain range hood, which uses a pollutant removing device and the back of which is adjacent to a wall, comprising:
 an air blow device that is provided with an elongate air blow slot that is located on a counter top and in front of an oven, where air is blown upward through the slot; and   a suction device located above the counter top and including an elongate suction opening that is connected with a suction machine, where the elongate suction opening is parallel to the elongate air blow slot in a way that the elongate suction opening is above and spaced from the elongate air blow slot toward the wall, so that an oblique air curtain that is nearly two-dimensional is formed between the elongate suction opening and the wall when the suction machine is operated to decrease gas escape and enhance the ability against the inference resulted from ambient air turbulence.   
   
   
       10 . The oblique single air curtain range hood as claimed in  claim 9  further including another elongate air blow slot that is parallel to the elongate air blow slot, located at the rear of the pollutant discharge outlet of the counter top, and through which air is blown upward. 
   
   
       11 . The oblique single air curtain range hood as claimed in  claim 9  further including a flange that is extended from one side of the elongate suction opening toward the wall. 
   
   
       12 . The oblique single air curtain range hood as claimed in  claim 11 , wherein the flange includes a fixing plate and a telescopic plate; the fixing plate is extended from one side of the elongate suction opening and the telescopic plate is able to be extended or retracted relative to the fixing plate. 
   
   
       13 . The oblique single air curtain range hood as claimed in  claim 9 , wherein the direction in which the air is blown is toward the wall and is tilted relative to the counter top. 
   
   
       14 . The oblique single air curtain range hood as claimed in  claim 10 , wherein the direction in which the air is blown is toward the wall and is tilted relative to the counter top. 
   
   
       15 . The oblique single air curtain range hood as claimed in  claim 9 , wherein the air blow device is a cross flow fan that is co-operated with the suction machine. 
   
   
       16 . The oblique single air curtain range hood as claimed in  claim 9  further including a blower that is in communication with the elongate air blow slot and co-operated with the suction machine. 
   
   
       17 . The oblique single air curtain range hood as claimed in  claim 9  further including an oil collection device that is in detachable connection with the elongate suction opening of the suction device. 
   
   
       18 . The oblique single air curtain range hood as claimed in  claim 17 , wherein the oil collection device is a rectangular box with an opening on the top thereof and includes a base board from which a first side panel, a first upright board, a second upright board, and a second side panel extend upward, where a filter is provided on the base board, a first space is defined between the first side panel, the first upright board, and the base board while a second space is defined between the second side panel, the second upright board, and the base board, and the first and second side panels are engaged with outside of the elongate suction opening so that the oil on the wall inside the elongate suction opening drips into the first and second spaces.