JPH0433445B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial Application Field The present invention comprises a centrifugal separation cylinder which has a cutter for cutting material on the inner bottom and is rotated by a motor, and a centrifugal separation cylinder which is attached to the inner periphery of the separation cylinder and which cuts the material. The present invention relates to a juicer that is equipped with a cylindrical filter that separates the collected material into waste and liquid, and that collects the waste in a centrifugal separation cylinder.

(b) Prior art This type of juicer is used, for example, in Japanese Patent Application Laid-Open No. 58-7217.
(A47J19/00). In this extractor, rotational vibrations are likely to occur due to unbalance of waste that occurs during juice extraction. Therefore, in order to prevent this, a sealed hollow part is formed in the upper part of the circumferential side of the centrifugal separation cylinder, and an appropriate amount of liquid is sealed in this hollow part to constitute a so-called fluid balancer and perform balance correction.

However, although a balancer with such a configuration can perform balance correction during steady rotation of the separation tube, the rotation speed is low at startup and stop, so no balance correction effect can be expected, and on the contrary, products etc. may be installed at an angle. In the case where the liquid was not evenly distributed, the weight balance was expanded and vibrations were increased.

(c) Purpose of the Invention In view of the above-mentioned drawbacks, the present invention aims to reduce vibrations during starting and stopping of a centrifugal separation tube.

(d) Structure of the Invention The structure of the present invention is characterized in that a sealed hollow portion having a substantially L-shaped cross section is formed from the bottom to the side of the centrifugal separation cylinder, and an appropriate amount of liquid is sealed within this hollow portion. .

According to such a structure, a hollow part is also formed on the bottom side of the centrifugal separation cylinder, and when the separation cylinder is started or stopped, liquid accumulates in this hollow part on the bottom side, so that the liquid is separated from the center of rotation of the separation cylinder. As the distance between the two and the rotational moment becomes smaller, vibrations caused by rotation become smaller than in the past.

(E) Embodiment An embodiment of the present invention will be described below with reference to the drawings. First, referring to FIG. 1, what is shown in the drawing is a waste accumulation type pumper that can also function as a mixer by connecting a mixer attachment (not shown), and has a main body that includes a built-in electric motor (not shown), etc. A, a liquid generation section B having a centrifugal separation cylinder 29, etc., and a liquid extraction section C that receives and takes out the liquid generated in this generation section B.
It mainly consists of. The configuration of each part will be explained in detail below.

() About the main body part A Referring to Fig. 2, 2 has a rectangular shape in plan with four corners cut out, and has elastic legs 3 at the four corners of the lower surface.
This is a main body case in which an electric motor is suspended and supported by a support plate 4, and a drive shaft 6 of the electric motor rotatably supported by a bearing 5 projects upward from an upper opening 7 of the case. This case 2 has a high step part 8 and a bottom step part 9 on the top surface. A high-speed drive connector 10 is fixed to the upper end of the drive shaft 6, and is detachably connected to a connector (none of which is shown) provided on the lower surface of the mixer attachment. 11 rotates at a low speed (for example, 4000 r.p.
m.) is a low-speed drive connector that is rotatably supported on the drive shaft 6 by a bearing 12,
The rotation of the drive shaft 6 is decelerated and transmitted via a deceleration mechanism 17 such as belts 15 and 16.

This connector 11 has a large diameter part 11a formed in the upper part, engagement grooves 18 formed in the outer periphery of the large diameter part 11a, and a drain plate 19 attached to the lower end. 2
Reference numeral 0 denotes a motor control operation section provided on the front side of the main body case 2.

() About the liquid generation section B First, referring to FIG. 2, 21 is a receiver 21a with an opening on the top surface, and a container lid 21 that covers this opening on the top surface.
It is a rectangular container with four corners cut out to match the main body case 2, and the receiver 21a is fitted into fitting parts 22 and 23 formed on the high step 8 on the upper surface of the main body case 2, and can be attached and removed. It is freely placed and has an opening 24 on the lower surface through which the connectors 10 and 11 are inserted, and a liquid outlet 25 is formed on the lower surface at a position facing the low step 9. This outlet 25 is equipped with a valve body 28 that is opened and closed by a knob 27 of the container 21a.

Referring to FIG. 3, reference numeral 29 has a spiral filter 30 detachably attached to the inner periphery of the low-speed connector 1 described above.
A centrifugal separation tube that is detachably connected to the base 1 and driven to rotate, includes a base part 29a having a cutter 38 for cutting material fixed to the upper surface, and a bottomed substantially cylindrical cylinder part 29b that is detachably attached to the base part 29a. and the base 29a
and a ring body 29c for coupling with the cylindrical portion 29b.

Each part will be explained in detail below. The above table part 29a
is made of synthetic resin and consists of a horizontal part 31 and a cylindrical support part 32 that protrudes downward from the horizontal part 31.Protrusions 33 formed on the inner periphery of the lower part of this support part 32 fit into the grooves on the outer periphery of the low-speed connector 11. 18... and the lower end portion 34 is fitted into the lower groove of the connector 11 to form the low-speed connector 1.
1 in a detachable manner. In addition, the support portion 32
A plurality of temporary fixing protrusions 35 and a plurality of engaging protrusions 36 are formed on the outer periphery of the lower part, and rotation preventing protrusions 37 are formed on the outer periphery of the upper end.

The cutter 38 is attached to the horizontal part 31 by screws or rivets, and forms cutting blades 39 radially from the center as cutting blades, and also performs re-cutting to finely re-cut the remaining material by cutting back on the periphery. A plurality of blades 40 are formed.

The cylindrical portion 29b is made of synthetic resin and has a cylindrical shape with an open top and a bottom as shown in FIG. It serves as a low stage section 52 for storage. The high step part 46 has an outer periphery 46a formed in a tapered shape that expands downward in order to facilitate the separation of debris accumulated on the low step part 52, and the support part 32 of the platform part 29a is fitted into the center part. A cylindrical fitting part 47 is formed, in which the outer periphery of the upper end 32a of the support part 32 is brought into surface contact with the upper inner circumferential surface 47a of the fitting part 47, and the outer periphery lower surface 31a of the horizontal part 31 is brought into surface contact with the upper end inner circumferential surface 47a of the high step part 46. It is brought into surface contact with the upper surface 46a.
With this two-face contact between the horizontal surface and the vertical surface, the base portion 29a
This reliably prevents wobbling of the cylindrical portion 29b and improves support strength. 48... is an engagement groove formed on the upper inner circumference of the fitting part 47, and
The protrusions 37 of 9a are fitted to prevent rotation of the base portion 29a and the cylinder portion 29b. 49 are locking claws that are discretely formed on the inner periphery of the lower end of the fitting part 47, and are elastically deformed when the support part 32 of the base part 29a is fitted into the fitting part 47, so that they can ride over the protrusions 35... They engage to temporarily fix both 29a and 29b.

In this temporarily fixed state, the ring body 29c is fitted onto the outer periphery of the support portion 32 of the base portion 29a, and the cylindrical portion 29b is held between the ring body 29c and the horizontal portion 31 to ensure the connection of both 29a and 29b. There is.

Referring to FIG. 3, the ring body 29c has protrusions 51 on its inner periphery having slopes that bayonetly engage with the protrusions 36 of the base portion 29a, and a receiving surface 53 for receiving the lower end of the fitting portion 47 at the upper end. is formed. Note that the support portion 32 and the ring body 29c are not engaged by bayonet, but have a threaded groove (not shown).
They may be combined by

56 is a cylindrical portion 29b to which the filter 30 is attached.
The inner peripheral surface of the tube has a tapered shape with a larger diameter at the top so that the separated liquid can easily rise.
A plurality of vertical protrusions 57 are formed at appropriate intervals, and a liquid flow gap 58 is provided between the protrusions 57 and the outer peripheral surface of the filter 30.

59 is a filter locking protrusion formed at the lower end corner of the inner circumferential surface 56 to prevent rotation of the filter 30, and is formed on an extension of the protrusion, but is not limited to this. .

Note that the liquid flow gap 58 may be provided by forming a protrusion (not shown) on the outer circumference of the filter 30 instead of forming a protrusion on the inner circumferential surface 56.

Reference numeral 60 denotes a large-diameter portion formed at the upper end of the inner circumferential surface 56, on which locking protrusions 62 of a lid 61 described later are integrally protruded inward.

63 is a substantially L-shaped closed hollow part extending from the bottom to the side of the cylinder part 29b, and an appropriate amount of liquid 68 is contained inside.
is enclosed to constitute the fluid balancer BL.
Specifically, the inner wall 64, the outer wall 65 in which the inner circumferential surface 65a is expanded downward, and the constituent wall of the low step portion 52 form a space having a lower opening and a substantially L-shaped cross section,
As shown in FIG. 4, after the cylindrical part 29b is turned upside down and the liquid 68 is sealed, the ring-shaped bottom cover 66 is connected to the lower end of the outer wall 65 and the inner end of the lower surface of the bottom step part 52 to form metal rings P1 and P2. Interposed uneven fitting
1, k2, and rings P1, P2 by high frequency.
It is heated to a temperature of approximately 150°C and sealed watertight by thermal welding.

67... is a vertical resistance plate integrally provided with a plurality of resistance plates protruding from the outer wall 65 side, and 63a is a resistor plate of the liquid 68 formed at the upper end inside the sealed hollow part 63 by making the outer wall 65 thicker than 63b. This is a dam for suppressing the rise. 63c is a liquid reservoir formed between the thick part 63b and the inner wall 64 above the dam part 63a, and is not necessary for balance correction. In other words, this part may be filled with resin, but when the liquid is filled as described above (see Fig. 4), the liquid 68 also flows into this liquid reservoir 63c, and as a result, the liquid level Y is changed from the thermally welded part (the uneven fitting part). This makes it possible to prevent the liquid 68 from evaporating during thermal welding. Also, the liquid reservoir 63c
If this part is filled with resin, this part becomes extremely thick and causes sink marks during cooling during resin molding, but this drawback can be overcome by providing the liquid reservoir part 63c.

As shown in FIGS. 5 and 6, the spiral filter 30 is composed of a multi-stage cylindrical spiral body 30A made of synthetic resin, for example, ABS resin, and a spiral swirl gap 69 is formed between each stage. It has spring properties. This spiral body 30A is formed by a mold so that the gap 69 is expanded as shown in FIG. 5 when no force is applied in the direction of contraction in the direction of the cylinder axis (natural extension state). In the closed state, it is compressed and the gap 6
9 is in the most contracted state, and when a force is applied in the direction of extension in the cylinder axis direction from the state shown in the figure, the interval of the gap 69 is further expanded, and when a force is applied in the horizontal direction, lateral displacement between stages is caused. This also has the property of expanding the gap 69 in the left-right direction. The length of the spiral body 30A in the cylindrical axis direction is longer than the depth of the cylindrical portion 29b even when the lid 61 is in the closed state and in the naturally extended state, making it easy to take out the filter 30.

Further, the uppermost stage 30a of the spiral filter 30,
By configuring the lowermost stage 30b so that the end surfaces 70, 70 are flat surfaces with no steps (excluding the protrusions 82, which will be described later), a large gap is formed between the inner surface of the lid 61 and the inner bottom surface of the cylindrical portion 29b. This prevents the waste from flowing out by preventing the formation of large gaps between the waste. The height dimension of the above cross section can be changed by gluing ring-shaped bodies for height adjustment on the top and bottom surfaces of the spiral body with the same cross-sectional shape, or by changing the cross-sectional shape with a mold. However, in this embodiment, the latter is adopted. Then, the end portions 71, 71 are made sufficiently thick in the cylinder axis direction to ensure the strength of the end portions, and a protruding piece 72 is provided on the end portions 71, 71.
A groove 73 into which a protruding piece 72 is fitted is formed in the abutting surface corresponding to 71, and even if a slight force is applied to the ends 71, 71 when the filter 30 is pulled up, the end 71, which has a small cross section, The corner portions are rounded so that the protruding piece 72 and the groove 73 are disengaged when a predetermined force or more is applied. Since this locking is performed on the outer peripheral side of the filter 30, there is less adhesion of debris and cleaning is easy.

Further, the spiral body 30A has an outer diameter slightly smaller than the inner diameter of the cylindrical portion 29b (the tips of the protrusions 57),
The outer peripheral surface 74 is in contact with the protrusions 57, and the inner peripheral surface 75 has tapered surfaces 75a, 75a so that the diameter increases symmetrically from the midpoint (0) upward and downward, as shown in FIG. By forming the separation tube 29, the rotation of the separation cylinder 29 allows the scum to be accumulated from below first, and also facilitates the removal of the scum from the filter in the downward direction. In the embodiment, the filter 30 is formed to have a larger diameter toward the top and bottom in order to eliminate the vertical directionality, but if it has directionality, it would have a taper that increases in diameter from the top to the bottom. It is sufficient if it is formed on a surface.

Further, the cross-sectional shape of each step of the spiral body 30A is as shown in FIG.
a, 76a, thereby creating a gap 69
The flow resistance of the flowing liquid is further reduced, and the inner surface 76b is made a flat surface to facilitate the movement of waste. Note that the form of this notch is not limited to that shown in the drawings. Furthermore, if it is not necessary to improve the mobility of debris, the inner surface may be curved.

Further, referring to FIG. 6, the spiral body 30A forms a liquid flow gap 69 between each step, and also forms flat surfaces 77a and 77b on the surfaces forming the gap, and the lower surface of the lid 61 and the low step portion 52 of the cylindrical portion 29b. Liquid flow gaps 79 and 80 are formed between the upper surface and the upper surface. When the lid 61 is closed, this gap is formed by the spiral body 30, which is a gap forming surface, in the spiral gap 69 so that the gap between each stage does not become narrower than a certain value (for example, 0.4 mm).
The spacing-maintaining protrusions 8 all have the same height on the flat surface 77b of the lower surface of A over the entire width of the thread in the radial direction.
1... are formed at equal intervals in the longitudinal direction of the gap 69, and in the gaps 79 and 80, the spiral body 30A
Protrusions 82 for maintaining distances having the same height as the protrusions 81 are formed on the upper and lower end surfaces of. These protrusions 81..., 82... make the ease of liquid outflow approximately equal over the entire vertical direction of the filter. Note that the latter projections 82 may be provided on the lid 61 and the cylindrical portion 29b side instead of being provided on the spiral body 30A, and the former projections 81 may be provided on the upper surface side of the spiral body 30A. Further, the protrusions 81..., 82... may be knurled protrusions.

Further, the spiral body 30A is prevented from rotating by engaging the cylindrical portion 29b and the lid 61 with the concave and convex portions. That is, substantially V-shaped engagement grooves 83 having the same shape are formed at the upper and lower outer corners of the uppermost and lower stages of the spiral body 30A at a predetermined angle (in this embodiment, approximately
60 degrees) are formed in a pair at the target position, and a lid 6 is placed in the upper groove 83...
Approximately V-shaped protrusions 84 are formed at predetermined angle intervals (approximately 60 degrees in this embodiment) on the inner circumferential corner of 1.
By fitting, rotation is prevented between the lid 61, and by fitting the protrusions 59 of the cylindrical portion 29b into the grooves 83 at the lower end, rotation is prevented between the separation tube 29. being done.

Further, as shown in FIGS. 3, 7 and 8, the lid 61 is fitted and locked into the large diameter portion 60 at the upper end of the cylindrical portion 29b to prevent the filter 30 from coming off.
It is configured to have a function of preventing debris accumulated on the inner circumference from flying out. 61a is the large diameter portion 60
It is a cylindrical vertical part that is in contact with
... are provided at equal intervals, and the protrusions 85, 85 have a groove 86 in the form of a longitudinal groove 86a through which the protrusion 62 of the large diameter portion 60 passes, and a transverse groove 86b that communicates with the groove 86a and engages with the protrusion. A large number of them are formed at equal intervals, and the inner circumferential surface 87 is formed in a tapered shape that expands downward, and longitudinal protrusions 88 are formed that contact the outer periphery of the upper end of the spiral body 30A. A flow gap 89 is formed. Further, liquid flow gaps 90 and 91 are also formed between the inner surface of the large diameter portion 60 and the vertical portion 61a. Reference numeral 61b denotes a horizontal portion having an opening 93 having a diameter smaller than the inner diameter of the spiral body 30A and having a downward protrusion 92 on the periphery.The lower surface presses the upper end surface of the filter 30, and the periphery of the opening 93 acts to prevent debris from flying out. Eggplant.

Further, referring to FIG. 2, the container lid 21b has a material input tube 44 integrally vertically disposed opposite a portion off the center of the cutter 38, and a material input tube 44 is integrally provided on the periphery thereof so as to cover substantially the entire surface of the cutter 38. A regulating plate 41 is integrally provided to protrude in the horizontal direction. The outer edge of this regulation plate 41 is bent downward and the re-cutting blade 4
A hanging portion 41a is formed which is located outside of the extension portions 42 and faces the extension portions 42. This hanging part 41
One or more slits for concentrating the material to pop out are formed in a, and projections 94 for holding down the material cut on the outer circumferential surface are integrally formed. Reference numeral 95 denotes a push rod that is inserted into the material input cylinder 41 to push the material, and 96 . . . are protrusions formed obliquely in a direction to discharge excess waste out of the separation cylinder when excessive waste is accumulated.

Further, the container lid 21b is fixed in a pressed state onto the main body case 2 with the container 21a in a closed state by a clamp device 97 attached to the main body case 2 as shown in FIG.

() About the liquid take-out part C Reference numeral 119 is a cup for receiving the liquid from the outflow port 25, which has a substantially triangular cross section and a low step part 9 formed in the front corner of the main body case 2 in a substantially triangular shape in plan.
A handle 120 is provided at the corner to facilitate removal from the front side of the main body.

Next, the operation of the above embodiment will be explained. Before producing liquid, insert the projecting pieces 72 at the starting end into the groove 7.
The filter 3 shown in FIG.
0 into the cylindrical portion 29b. Then, while compressing the filter 30, the lid 61 is fitted into the large diameter portion 60 of the cylindrical portion 29b, and the protrusions 62 are inserted into the vertical grooves 8.
6a... into the horizontal grooves 86b and rotate the lid 61 clockwise (opposite to the rotational direction of the separation tube 29) when viewed from above to position the protrusions 62 deep inside the horizontal grooves 86b. join to. In this state, the filter 30 is contracted as shown in FIG. 3 to prevent it from popping out. and,
A gap 79 is created between the inner surface of the lid 61 and the upper end surface 70 of the filter 30 by the projections 82 on the upper end.
1, the gap 69 is maintained at a constant distance, and the projections 82 at the lower end maintain the gap 80 at a constant distance. At the same time, the lower end of the filter 30 is locked to the cylindrical part 29b by the engagement between the projections 59 and the grooves 83 at the lower end, and the upper end of the filter 30 is locked by the engagement between the projections 84 and the grooves 83 at the upper end. 61, the filter 30 is prevented from rotating vertically.

Next, the container lid 21b is closed on the receiver 21a, and the clamp device 97 is rotated to engage the lid 21b, thereby completing the juice production preparation state. Then, by driving the electric motor, materials such as fruits and vegetables are introduced into the input tube 44 and pushed by the push rod 95. Then, the material is grated by the grater blade 39, but large materials such as leather that could not be grated and cut are cut into small pieces by the re-cutting blade 40, and the gap between the regulating plate 41 and the base part 29a is Or hanging part 41a
It is blown horizontally outward from the notch and adheres to the inner periphery of the filter 30. This adhered material to be cut is separated into scraps and liquid while descending along the tapered surface 75a of the filter 30.
The liquid flows through the gaps 80 and 69 and reaches the cylindrical portion 2.
After reaching the inner periphery of 9b and moving upward through the circulation gap 58 formed by the protrusions 57,
Flow gaps 90, 9 between the lid 61 and the cylindrical portion 29b
1, flows out of the separation tube 29, and is received in the container 21a. This liquid flows down from the outlet 25 and is received by the cup 119.

On the other hand, waste portions are accumulated sequentially from the inner lower end H of the filter 30 while being held down by the holding projection 41a, resulting in an accumulation state as shown in FIG. 13. When the material is further cut, the material to be cut passes through the filter 3.
0 is also accumulated in the inner upper half, and the horizontal part 6 of the lid 61
The liquid separated from the material to be cut in the lower part of 1b is in the gaps 79-80-90-91 and 69-90-
It flows out of the separation cylinder 29 through 91. The outflow of this liquid is made smooth because the inner circumferential surface 87 of the lid 61 is tapered. When the material is further cut and accumulated inside the diameter of the opening 93 of the lid 61, the scraps are discharged to the outside of the separation tube 29 by the protrusions 96.

In this youth generation action, the fluid balancer (BL) described above functions as follows. When the centrifugal separation tube 29 is started, the liquid 68 is collected at the inner bottom of the hollow part 63, and the center of gravity of the liquid 68 is located at the separation tube 29.
The distance from the center of rotation is getting shorter. Therefore, if the product is installed with a slight inclination, the distribution of the liquid 68 will be uneven, but since the distance of the liquid 68 from the center of rotation is short, the rotational moment is small, and vibrations due to rotation are reduced. This effect is the same when the separation tube 29 stops rotating.

Also, during regular rotation of the separation cylinder 29 during the production of juice, if an imbalance occurs in the distribution of the residue adhering to the inner periphery of the filter 30, the liquid balancer (BL)
Balance correction is performed by. The liquid 68 adheres to the inner peripheral surface 65a of the outer wall 65 due to centrifugal force as shown in FIG. 10, but the rise of the liquid 68 is suppressed by the presence of the dam 63a and the slope of the inner peripheral surface 65a. and obtain the following effect. That is, if the vertical length of the hollow portion 63, that is, the length of the surface on which the liquid 68 rises is long, it causes vibrations, but by suppressing the rise of the liquid 68, the vibrations can be reduced.

Note that the present invention is not limited to the above embodiment, and the dam 63a may be formed by an annular protrusion instead of a step. Also, filter 30
Instead of a spiral filter, a comb-like filter having a large number of vertical slits may be used.

(f) Effects of the Invention According to the present invention configured as described above, there are great effects such as being able to suppress vibrations when starting and stopping the separation cylinder.

[Brief explanation of drawings]

Figures 1 to 10 all show an embodiment of the present invention, with Figure 1 being a front view, Figure 2 being a front cross-sectional view of a main part notched, Figure 3 being a longitudinal cross-sectional view of a main part, and Figure 4 being a front view of the main part. 5 is a front view of the part, FIG. 6 is a sectional view of the part showing a compressed state, FIG. 7 is a back view of the part, and FIG. 8 is a sectional view of the part showing part of the manufacturing process. 9 is an enlarged front view of the main part of FIG. 8, and FIG. 10 is a longitudinal sectional view of the main part showing the operating state. 21... Container, 29... Centrifuge tube, 30...
Filter, 38...Katsuta, BL...Fluid balancer.

Claims (1)

[Claims] 1. A centrifugal separation tube that has a cutter for cutting material on the inner bottom and is rotated by a motor, and a tube that is detachably attached to the inner circumference of this separation tube and separates the cut material into waste and liquid. The extractor is equipped with a filter having a shape of 1.5 mm, and a container for receiving the liquid flowing out from the centrifugal tube, and a container for collecting the waste in the centrifugal tube. 1. A juicer characterized by forming a hollow part and sealing an appropriate amount of liquid in the hollow part.