JPS6139802B2 - - Google Patents

Description

[Detailed Description of the Invention] Conventionally, in a juicer that extracts juice by retaining lees in a centrifugal separation basket with a filter inside and a cutter fixed to the bottom, vibrations caused by imbalance of the lees are large. is one drawback. Several methods have been proposed to eliminate this drawback. One of the methods is to install a hollow annular body having a control plate with a plurality of slits inside the centrifugal separation cage, in which a liquid is sealed in the outer periphery of the upper side wall of the centrifugal cage. This method attempts to automatically cancel out the unbalanced load caused by the dregs by unevenly distributing the liquid inside the hollow annular body in a direction symmetrical to the unbalanced load caused by the dregs generated inside the centrifugal cage. However, this method also has some drawbacks. One of these is when the rotation speed drops below the resonant frequency of the vibration system consisting of the centrifugal cage, motor, and motor rubber, the uneven distribution of liquid does not move to a position that cancels out the unbalance of the lees, and on the contrary, it promotes the unbalance. I will do it. Therefore, when the rotational speed decreases due to the load during juice extraction, especially when it matches the resonance frequency, the vibration of the centrifugal cage increases rapidly, producing abnormally large vibrations. Even when the load at the time of juice extraction is removed, the rotation cannot increase due to the load applied to the bearing part due to vibration, and it is impossible to escape from the resonance point. Therefore, abnormally large vibrations persist, causing discomfort to the user and adversely affecting the lifespan of the device itself. In order to eliminate this drawback, a method has been proposed in which ribs are provided on the lid close to the outer periphery of the upper part of the centrifugal cage, so that when the vibration becomes large, the ribs come into contact with the lid to control the vibration. The peripheral speed is high and the lid may melt due to friction. In addition, the lid may break or come off due to the impact upon contact, resulting in leakage of juice, which is not a very good method for vibration control.

The present invention solves the above-mentioned drawbacks and makes it possible to extract stable use.One embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a centrifugal separation cage having a substantially cylindrical shape with a bottom, and has a hollow annular body 3 having a non-porous side wall and a liquid 2 sealed in the outer periphery of the upper part of the side wall. Inside the hollow annular body 3, a plurality of control plates 5 having slits 4 are installed. A cutter 6 is fixed to the inner bottom of the centrifuge cage 1. Reference numeral 7 denotes a cylindrical filter, the side wall 8 of which has a cylindrical comb shape, and is detachably installed in the centrifugal separation cage 1. Further, the cylindrical filter 7 is provided with a flange 9 located at the top thereof and projecting inward, and a hook portion (not shown) is formed at the bottom that elastically engages with the centrifugal separation cage 1 to prevent it from coming off. . Reference numeral 10 denotes a motor, which provides rotation to the centrifuge cage 1 via a coupling 11. 12
is the main body of the regulator, in which a motor 10 is supported in a vibration-proof manner via a vibration-proof rubber 14. A youth container 15 is placed on the main body 12, and a lid 19 having an input port 16 is placed on top of the youth container 15. Further, a plurality of protrusions 17 are installed radially on the outer wall of the inlet 16 at a portion facing the flange 9 of the filter 7. 18 is material input port 1
This is a push rod for pushing from 6 to cutter 6.

Next, the operating state during juice extraction will be explained. The centrifugal separation basket 1 is rotated at high speed, and the material is inputted from the input port 16 and pushed into the cutter 6 by the push rod 18. The material is crushed by the cutter 6 and pressed against the side wall 8 of the cylindrical filter 7 by centrifugal force. The material crushed by this cylindrical filter 7 is
It is separated into a liquid component (youth) and a solid component (lees). The youth rises up the inner wall of the centrifugal cage 1 and is discharged to the outside. By repeating this operation, a large amount of youth can be extracted. On the other hand, lees accumulates in the filter 7, which causes an unbalanced load. At this time, when the centrifugal cage 1 is rotating at a rotation speed higher than the resonance frequency of the vibration system consisting of the motor 13, the vibration isolating rubber 14, and the centrifugal cage 1, the liquid sealed in the hollow annular body 3 2 moves so as to cancel out the unbalanced load caused by the lees, and works to reduce the vibration of the centrifugal separation basket 1. However, at this time, due to the load when the cutter 6 crushes the material, the rotation speed of the centrifugal separation cage 1 decreases, and if it matches the above-mentioned resonance frequency, the liquid 2
The effect of canceling out the unbalanced load on the lees caused by the movement of the centrifuge cage 1 does not occur, and the vibration of the centrifugal separation basket 1 increases. However, the flange 9 of the cylindrical filter 7 comes into contact with the protrusion 17 of the input port 16 and plays the role of vibration regulation, so the load on the motor bearing does not increase much and the rotational speed increases quickly after material input is completed. Therefore, the resonant vibration will not continue. Further, the peripheral speed of the inner circumference of the flange 9 is relatively low, and the flange 9 and the protrusion 17 will not melt due to friction. or,
Since the impact upon contact is not directly transmitted to the lid 19, the lid 17 will not come off from the juice container 15 and the juice will not leak. Furthermore, since there is some gap between the cylindrical filter 7 and the centrifugal separation cage 1, the impact force upon contact is weak, and the lid 17 will not be damaged. Further, even when the cylindrical filter 7 is full of lees, it is discharged outside the cylindrical filter 7 through the gap between the protrusions 17, and the state of lees filling can be visually confirmed.

As described above, the present invention provides a centrifugal cage having a plurality of control plates inside and a hollow annular body with a liquid sealed therein on the outer periphery of the upper side wall, and a comb-shaped centrifugal cage installed inside the centrifugal cage. It has a cylindrical filter, and a plurality of protrusions are provided radially on the outer wall of the input port at a position facing the flange located above the comb-shaped cylindrical filter and protruding inward, thereby reducing vibration. , it is possible to provide an excellent pumper that does not affect the life of the motor bearing and has no possibility of damage to the lid.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a juicer according to the present invention;
FIG. 2 is an enlarged cross-sectional perspective view of the same main part. 1... Centrifuge cage, 2... Liquid, 3... Hollow annular body, 4... Slit, 5... Control board, 7...
Comb-shaped cylindrical filter, 9...flange, 16...
...Inlet, 17...Protrusion, 19...Lid.

Claims (1)

[Claims] 1. A centrifugal cage that has a plurality of control plates inside and a hollow annular body with a liquid sealed inside on the outer periphery of the upper side wall, and a comb-shaped cylindrical filter installed inside the centrifugal cage. A juicer having a plurality of radial projections on the outer wall of the inlet at a position opposite to a flange located above a comb-shaped cylindrical filter and protruding inward.