Vacuum Vessel Having Improved Airtightness

Abstract

Disclosed herein is a vacuum vessel, capable of maintaining the freshness of food contained in the vessel for a lengthy period of time by creating a vacuum in the vessel. The vacuum vessel includes a main body ( 10 ) having along an edge thereof an annular protrusion. A seat ( 15 ) is disposed in the main body to seat an exterior receptacle containing food therein. A cover ( 20 ) covers the main body, and includes a valve mount part and a packing groove defined between inner and outer rings at a position corresponding to the annular protrusion of the main body. A packing ( 25 ) is fitted into the packing groove, and has an insert groove to engage with the annular protrusion of the main body, and an extension part to enhance a seal. A check valve ( 30 )( 130 )( 230 ) is mounted to the valve mount part of the cover.

1 . A vacuum vessel, comprising: 
 a main body having along an edge thereof an annular protrusion;    a seat disposed in the main body to seat an exterior receptacle containing food therein, and comprising a plurality of seating protuberances to protrude from a bottom of the main body to a predetermined height;    a cover covering the main body, and comprising a valve mount part and a packing groove defined between inner and outer rings at a position corresponding to the annular protrusion of the main body;    a packing fitted into the packing groove, and comprising an insert groove to engage with the annular protrusion of the main body, and an extension part to enhance a seal; and    a check valve mounted to the valve mount part of the cover.    
   
   
       2 . (canceled)  
   
   
       3 . The vacuum vessel according to  claim 1 , wherein an anti-slip member is attached to an upper surface of each of the seating protuberances.  
   
   
       4 . The vacuum vessel according to  claim 1  wherein the check valve is made of soft rubber or synthetic resin, and comprises: 
 a knob;    an upper disc connected to the knob to cover a mount hole of the valve mount part;    a lower disc contacting a lower surface of the valve mount part;    a coupling part to couple the upper and lower discs to each other, an outer diameter of the coupling part being smaller than an inner diameter of the mount hole; and    a space defined in the valve.    
   
   
       5 . The vacuum vessel according to  claim 4 , wherein a part of the space defined in the knob comprises an expanded space, so that the space is contracted and the knob is deformed when air is exhausted from the vessel, thus allowing a user to easily confirm whether or not a vacuum has been created in the vessel.  
   
   
       6 . The vacuum vessel according to  claim 4 , wherein a part of the space defined in the knob comprises a contracted space with a reduced volume, so that the space is contracted and the knob is deformed when air is exhausted from the vessel, thus allowing a user to easily confirm whether or not a vacuum has been created in the vessel.  
   
   
       7 . The vacuum vessel according to  claim 5 , wherein a plurality of prominences is provided on an upper surface of the knob.  
   
   
       8 . The vacuum vessel according to  claim 3 , wherein the check valve is made of soft rubber or synthetic resin, and comprises: 
 a knob;    an upper disc connected to the knob to cover a mount hole of the valve mount part;    a lower disc contacting a lower surface of the valve mount part;    a coupling part to couple the upper and lower discs to each other, an outer diameter of the coupling part being smaller than an inner diameter of the mount hole; and    a space defined in the valve.    
   
   
       9 . The vacuum vessel according to  claim 6 , wherein a plurality of prominences is provided on an upper surface of the knob.