초록 ▼

A juice extractor capable of extracting juice from vegetables, fruits or soymilk from beans is disclosed. The extractor includes a housing having a draff outlet port and a juice outlet port, a screw having an upper rotary shaft inserted in a rotary shaft hole of the housing and a lower rotary shaft

A juice extractor capable of extracting juice from vegetables, fruits or soymilk from beans is disclosed. The extractor includes a housing having a draff outlet port and a juice outlet port, a screw having an upper rotary shaft inserted in a rotary shaft hole of the housing and a lower rotary shaft with a plurality of screw spirals formed on an outer periphery thereof, and a mesh drum for extracting the juice toward the juice outlet port, and a rotary brush mounted between the housing and the mesh drum and having a brush holder. Various nutrients and intrinsic flavor contained in the vegetables or fruits are maintained to the fullest extent by employing a very low speed screw of a squeezing mode. Also, since the housing accommodating the screw is vertically fixed to an upper portion of a drive unit, the material is automatically moved downward without pressing the material down, and the draff is discharged while squeezing and grinding the materials put in an inlet port.

대표청구항 ▼

1. A juice extractor comprising: a cover having an inlet port formed on one side of an upper part thereof and a rotary shaft hole formed in a center of an inner part thereof;a housing installed on a lower part of the cover, the housing having a guide jaw formed on a bottom of the housing, a draff ou

1. A juice extractor comprising: a cover having an inlet port formed on one side of an upper part thereof and a rotary shaft hole formed in a center of an inner part thereof;a housing installed on a lower part of the cover, the housing having a guide jaw formed on a bottom of the housing, a draff outlet port and a juice outlet port formed apart from each other on a lower end part of the housing, a waterproof cylinder having a through hole formed in a center of the lower end part of the housing, and a pressure discharge passage formed around a lower part of the waterproof cylinder;a screw having an upper rotary shaft formed on an upper part of the screw to be rotatably inserted into the rotary shaft hole, a plurality of screw spirals formed on an outer surface of the screw, an inner ring formed at a lower end of the screw to project downward and having a plurality of screw gears rotatably inserted into the pressure discharge passage, a lower space formed inside the inner ring to receive the waterproof cylinder therein, and a lower rotary shaft formed in a center of a lower part of the screw and a polygonal shaft hole formed thereon;a mesh drum insertable into the guide jaw of the housing, the mesh drum having a mesh structure formed on an outer wall of the mesh drum to discharge juice to the juice outlet port, and a plurality of wall blades longitudinally formed on an inner surface of the mesh drum;means disposed between the housing and the mesh drum for rotation and for continuously sweeping the mesh drum and the housing;and a drive unit having a polygonal shaft that is inserted into the polygonal shaft hole through the through hole of the waterproof cylinder, and rotating the screw at a low speed; wherein the housing accommodating the screw is longitudinally fixed to an upper side of the drive unit so as to press, grind and extract juice from materials put into the inlet port and to discharge a draff. 2. The juice extractor of claim 1, wherein the pressure discharge passage of the housing is connected to the juice outlet port. 3. The juice extractor of claim 1, further comprising: a discharge jaw formed at an end of a lower part of the spirals of the screw by internally cutting a lower border of the screw;a bottom ring formed at an end of a lower part of the mesh drum, and having an inner ring insertion hole formed thereon to accommodate the inner ring;a discharge slant surface formed on an upper surface of the bottom ring, the discharge slant surface being in the form of a circular arc of which the depth is increased in a rotating direction of the screw; a mesh drum discharge hole connected to an end of the discharge slant surface to discharge the draff out of the mesh drum; and a housing discharge hole formed on one side of the bottom of the housing and connected to the mesh drum discharge hole and the draff outlet port;wherein the discharge jaw discharges the draff to the draff outlet port through the housing discharge hole by pushing the draff to the mesh drum discharge hole as the discharge jaw is rotated along the discharge slant surface. 4. The juice extractor of claim 3, wherein a circular projection is formed at an edge of an inner side of the bottom ring, a circular groove is formed on an outer side of the circular projection, an outer ring is formed on an outer periphery of the inner ring to project downward, and a circular projection insertion hole is formed between the inner ring and the outer ring; wherein the outer ring is rotatably inserted into the circular groove to extend a contact area with the draff being guided by the discharge jaw, and the circular projection is inserted into the circular projection insertion hole to minimize an inflow of the draff to the pressure discharge passage. 5. The juice extractor of claim 1, wherein a strain net and a pressing net having a plurality of meshes formed thereon are formed on an upper part and a lower part of an outer wall of the mesh drum, and a sealing structure in which a plurality of grinding blades are longitudinally formed is formed between the strain net and the pressing net; wherein the juice is discharged to the juice output port through the strain net and the pressing net. 6. The juice extractor of claim 1, wherein a plurality of engagement jaws are formed on a border of a lower end part of the cover, a plurality of engagement projections are formed on an outer periphery of an upper end of the housing, and engagement hooks are formed on the drive unit; wherein the housing that is secured to the cover by the engagement of the engagement jaws with the engagement projections is detachably secured to the drive unit by the engagement hooks. 7. The juice extractor of claim 1, wherein the means for rotation and for continuously sweeping the mesh drum and the housing includes a net brush attached to an inner surface of the brush holder to continuously sweep the outer wall of the mesh drum, and a housing brush attached to an outer surface of the brush holder to continuously sweep the inner wall of the housing. 8. The juice extractor of claim 1, wherein a brush gear is mounted on a lower part of the brush holder, and an intermediate gear is rotatably mounted on the lower surface of the housing to be engaged with the brush gear; wherein the intermediate gear, which is engaged with the screw gear, rotates the brush gear. 9. The juice extractor of claim 1, wherein a slant surface is formed on a lower end surface of the inlet port of the cover in the rotating direction of the screw. 10. The juice extractor of claim 3, further comprising an elastic packing mounted on one side of the bottom surface of the housing discharge hole, one side of the packing being inserted into an insertion groove formed on the bottom surface of the housing to achieve sealing, and the other side thereof being in close contact with an outlet of the housing discharge hole. 11. The juice extractor of claim 1, wherein the cover further comprises a securing projection formed on an outer periphery of the cover, the securing projection being positioned in an area substantially opposite to the juice outlet port and the draff outlet port of the housing. 12. The juice extractor of claim 11, wherein the drive unit comprises: a base frame in which a motor and a control device are installed;a housing engagement surface formed on an upper surface of the base frame;a polygonal shaft of the motor formed to project in the center of the engagement surface;a plurality of engagement hooks formed on an outer periphery of the engagement surface to secure the housing;a support frame having a mounting surface formed on one side of the housing engagement surface of the base frame to correspond to a side surface of the housing and extending from the base frame to support the housing;a securing groove which is formed on an upper surface of the support frame and to which the securing projection of the cover is secured; and a handle unit extending from an upper end of a rear surface of the housing mounting surface of the support frame to a lower end of the base frame. 13. The juice extractor of claim 1, wherein the means for rotation and for continuously sweeping the mesh drum and the housing comprises a rotary brush and a brush holder in which the rotary brush is installed.