JPS6138686B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a juicer that stores lees inside a centrifugal separation basket, and is designed to reduce rotational vibrations caused by imbalance of lees that occurs during extraction of lees. A hollow annular body with an appropriate amount of liquid sealed inside is effectively cooled during operation so that the sealing performance of the welded part is not impaired.

Conventionally, as a means to reduce rotational vibration in a juicer that stores lees internally, a method has been taken to increase the mass of the rotating body and increase the moment of inertia using a balance weight installed in the centrifugal separation cage. There is.

However, a problem with this method is that the mass of the balance weight is large, making the entire product heavy and expensive. Furthermore, since the moment of inertia of the rotating body becomes large, the input to the motor increases when starting, and the stopping time becomes longer when stopping, which also causes safety problems.

As a method for solving the above-mentioned problem, it has been considered to provide a hollow annular body with an appropriate amount of liquid sealed therein instead of the balance weight. When this method is applied to Jusa, the following problems arise.

In other words, when extracting juice, the material to be cut (fruits, vegetables, etc.) is intermittently introduced, so the state of adhesion of the cut pieces to the centrifugal separation basket changes each time.
The unbalanced state inside the centrifugal cage constantly fluctuates. Accordingly, since the liquid in the annular hollow body moves rapidly, collisions with the partitions provided in the annular hollow body frequently occur, so that the temperature of the liquid rises during long-term operation. Furthermore, there are also effects such as heat conduction due to heat generated by the motor, and it has been experimentally confirmed that the temperature of the liquid increases by several degrees Celsius.

As a result, the air pressure inside the hollow annular body increases, and if the welding surface of the hollow annular body is incomplete, the sealing performance of the welding surface is impaired, resulting in leakage of the enclosed liquid.

The present invention solves the above-mentioned drawbacks, and one embodiment thereof will be described in detail below with reference to the accompanying drawings.

In the figure, 1 is a main body of a juicer having legs 3 on a bottom plate 2, 4 is a motor attached to a support 5 protruding into the main body 1 via a buffer 6 with screws 7, and 8 is a motor mounted on the main body 1. Youth receiving part 9 inside
and a youth receiving container 8 having a youth outlet 10 at the bottom, and inside the youth receiving container 8, there is a centrifugal separation basket (hereinafter referred to as a spinner) 11 made of resin and having a substantially cylindrical shape whose diameter increases upwardly.
is located.

12 is a cutter fixed to the lower surface of the spinner 11, and 13 is a cylindrical comb filter detachably inserted into the spinner 11. This filter 13 has a plurality of slits 13a formed in the vertical direction.

14 is a hollow annular body which is arranged concentrically with the spinner 11 and rotates together with the spinner 11; this hollow annular body 14 has an appropriate amount of liquid inside it, and the rapid In order to prevent movement, the partition body 15 has a slit portion 15a.
It is equipped with multiple items.

The hollow annular body 14 is an annular recess 14a integrally provided at the upper end of the spinner 11 made of synthetic resin.
and an annular round-shaped washer 14b made of synthetic resin that fits into the recess 14a, and the two are welded together by hot plate welding, ultrasonic welding, or the like.

Reference numeral 16 denotes a material input tube provided on the juice container lid 17. The input tube 16 is hollow inside and has the role of guiding fruits etc. that are pushed into the cutter 12 by the push rod 18. At the same time, when the push rod 18 is removed, it also serves as a ventilation barrel.

Note that the distal end portion 16a of the charging tube 16 is provided below the hollow annular body 14.

19 is a cooling fan for cooling the motor 4;
20 decelerates the rotational movement of the motor 4 and connects it to the output shaft 21
This is a deceleration mechanism for transmitting information to the

Next, the operation and effects of the above-mentioned juicer will be explained. The fruits pushed into the cutter 12 by the pushing rod 18 are crushed by the high-speed rotation of the cutter 12, and centrifugal force is applied by the rotation of the spinner 11, which adheres to the inner surface of the cylindrical comb-shaped filter 13 and is separated into youth and lees. , the youth rises on the inner wall surface of the spinner 11 and is discharged from above, and the discharged youth drops outside from the youth outlet 10 via the youth receiver 9.

On the other hand, the dregs of the youth are stored inside the cylindrical comb-shaped filter 13, that is, in the spinner 11.

At this time, since the input of fruits is not continuous but intermittent, the amount of load applied to the motor 4 also changes intermittently, and therefore the rotation speed of the motor 4 and the spinner 1
1 will always change.

On the other hand, as the rotation of the spinner 11 fluctuates, the liquid in the hollow annular body 14 also constantly fluctuates, causing repeated collisions between the liquids and collisions at the slit portion 15a.

Therefore, during long-term operation, the temperature of the liquid increases due to the energy of the collision, and the air inside the hollow annular body 14 expands accordingly, increasing the internal pressure.
This increase in air pressure has an adverse effect on the sealing performance of the welded part of the hollow annular body 14, and if the strength of the welded part is weak, the sealing performance is impaired.
As a result, the liquid in the hollow annular body 14 flows out, reducing the balance absorption effect.

In the embodiment of the present invention, since the hollow annular body 14 is located above the lower end 16a of the input cylinder 16 which functions as a ventilation barrel, the following effects can be achieved.

That is, the spinner 11 rotates at high speed (approximately
4000 rpm), a flow is generated in the air around the outer periphery of the spinner 11, and the air is eventually discharged to the outside from the youth outlet 10. Therefore, the air inside the spinner 11 becomes a negative pressure, and when the push rod 18 is removed, the feeding cylinder 1 acts as a ventilation cylinder and sucks in outside air. However, at this time, since the lower end 16a of the charging tube 16 is located below the hollow annular body 14, the outside air taken in is transferred from the lower end 16a of the charging tube 16 to the hollow annular body 14.
After cooling the hollow annular body 14 by turning the inner wall, upper wall surface, and further outer wall surface of the hollow annular body 14, it is exhausted to the outside from the youth outlet 10 (flow shown by arrows in the figure).

Due to the cooling effect of this air flow, an increase in internal pressure within the hollow annular body 14 is suppressed. Furthermore, incidentally, since the spinner 11 itself is also cooled when the cooling air passes through the inner surface of the spinner 11, the conduction heat generated by the motor 6 is also cooled, and as a result, the internal pressure within the hollow annular body 14 is further increased. can be suppressed.

In this way, the pump of the present invention takes into consideration the positional relationship between the material input cylinder and the hollow annular body, so that the increase in internal pressure of the hollow annular body is suppressed, and the sealing performance of the welded part is not impaired, so that the welding part always has good sealing performance. This provides excellent performance.

[Brief explanation of the drawing]

The figure is a longitudinal sectional view of a juicer based on an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Main body, 4... Motor, 11... Centrifugal separation cage (spinner), 14... Hollow annular body, 16...
...Charging tube, 16a...lower end.

Claims (1)

[Claims] 1. A substantially cylindrical centrifugal separation cage rotated by a motor, and a hollow annular body with an appropriate amount of liquid sealed inside the centrifugal separation cage, which is arranged concentrically with the centrifugal separation cage and rotates together with the centrifugal separation cage; The hollow annular body has an annular recess integrally formed at the upper end of the centrifugal separation cage made of synthetic resin, and a material input tube located in the centrifugal separation cage and having openings at both ends. A pumper made of synthetic resin annular shaped parts that fit together, welded together, and mounted with this hollow annular body positioned above the lower end of the charging cylinder.