JP3908430B2 - Method for producing inner wall surface of centrifugal dehydrator and method for producing the dewatering tank - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a centrifugal dehydrator that forms a wall surface of a dewatering tank in a mirror shape to prevent the laundry from being left behind, and rotates the tank at a high speed to dehydrate water contained in the object to be dehydrated.
[0002]
[Prior art]
In the conventional dehydration operation of the centrifugal dehydrator, the dehydration tank is rotated at a high speed, and the moisture contained in the material to be dehydrated is discharged to the outside by the centrifugal force associated therewith. FIG. 8 is a block diagram showing a conventional centrifugal dehydrator, for example. In FIG. 8, 1 is an outer box, 2 is an outer tank disposed in the outer box 1, 3 is a waterproof cover disposed on the upper peripheral edge of the outer tank 2, and 4 is rotatably disposed in the outer tank 2. It is a stainless steel dehydration tank provided, and a plurality of hemispherical or triangular ribs 5 are arranged in the longitudinal and lateral directions of the inner wall surface. A plurality of dewatering holes 6 are formed between the ribs 5. 7 is a motor that rotates at the center of the outer bottom of the outer tub 2 and rotates the dewatering tub 4, 8 is a drain hose that communicates with the lower end of the outer tub 2, and 9 is the upper peripheral edge of the dewatering tub 4. Is a balancer disposed in
[0003]
Next, the dehydrating operation of the centrifugal dehydrator having such a configuration will be described with reference to FIG. Due to the centrifugal force generated by the high-speed rotation of the dehydration tank 4 during the dehydration operation, the moisture contained in the material to be dehydrated moves from the center of rotation of the dehydration tank 4 toward the inner wall surface. Then, the moisture that has moved to the inner wall surface is discharged from the dewatering hole 6 toward the wall surface of the outer tub 2, and the water accumulated at the bottom of the outer tub 2 is discharged to the outside of the outer box 1 through the drainage hose 8. Through such a series of operations, moisture contained in the laundry is removed.
[0004]
[Problems to be solved by the invention]
In the conventional centrifugal dehydrator, as described above, the dehydration tank is rotated at a high speed to remove moisture contained in the material to be dehydrated, thereby improving the dewatering performance. However, since the ribs of various shapes formed on the inner wall surface of the stainless steel dehydration tank are subjected to press processing, the specularity of the inner wall surface is lowered when the material is extended. As a result, the depth of the dewatering tank increases with an increase in capacity of the centrifugal dehydrator, so that the dehydrated material located in the lower part of the tank becomes difficult to see. Therefore, when the user takes out the dehydrated material from the dehydration tank after the dehydration operation, there is a problem that the dehydrated material existing in the lower part of the tank, particularly the dehydrated material located at the bottom on the near side, is frequently left behind. Arise.
[0005]
The present invention has been made to solve the above-described problems, and it is intended to improve the mirror surface of the wall surface of the dewatering tank to prevent the dehydrated material from being left behind and to improve the dewatering performance of the dehydrated material. It is intended.
[0006]
[Means for Solving the Problems]
The method of manufacturing the inner wall surface of a centrifugal dehydrator according to the present invention includes a method of manufacturing a wall surface of a dewatering tank of a centrifugal dehydrator that rotates a dewatering tank at a high speed to dehydrate a material to be dewatered therein. A stainless steel plate with a mirror finish on the inner surface of the body so that the dehydrated matter can be seen, and a plurality of inclined surfaces are formed by bending in the centrifugal direction, and a valley formed inside the tank by two adjacent inclined surfaces A flat portion narrower than the inclined surface is formed in the portion, and a dewatering hole is formed in the flat portion by burring.
Further, after the dewatering hole is formed, it is assembled into a cylindrical shape, and a bottom plate is coupled thereto to form a dewatering tank.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
FIG. 1 is a block diagram showing an embodiment of a centrifugal dehydrator according to the present invention, and FIG. 2 is a horizontal sectional view of a dehydration tank. 1 and 2, the same reference numerals as those in the prior art indicate the same or corresponding parts. In FIG. 2, 10 is a right inclined surface made of a stainless steel plate inclined to the upper right at an angle α1 larger than 90 °, for example, with respect to the traveling direction of radiation from the rotation center O of the dewatering tank 4, that is, centrifugal force R1, and 11 is a centrifuge. It is a left inclined surface made of a stainless steel plate inclined upward to the left at an angle α2 larger than 90 ° with respect to the traveling direction of the force R2, and these right inclined surface 10 and left inclined surface 11 are alternately coupled and arranged to form the dehydration tank 4 An inner wall surface is constructed. Each inclined surface includes a curved surface as well as a flat surface. A plurality of dewatering holes are formed in a valley portion (A portion in FIG. 2) formed by the outer end portion of the right inclined surface 10 and the outer end portion of the left inclined surface 11 when viewed from the rotation center portion of the dewatering tank 4. 6 is formed. A vector Bn in FIG. 2 is a component force generated in the horizontal direction along the inclined surface when the centrifugal force Rn is applied to the right inclined surface 10 and the left inclined surface 11.
[0010]
Here, a method for producing the stainless steel dehydration tank 4 will be described. In FIG. 2, the right inclined surface 10 and the left inclined surface 11 constituting the wall surface of the dehydrating tank 4 are produced by bending a thin stainless steel plate for mirror finishing. Next, the dewatering hole 6 is formed by burring in the above-described valley portion between the inclined surfaces. Here, as shown in the block diagram of the centrifugal dehydrator in FIG. 3, a narrow flat portion (A portion in FIG. 3) is provided between the outer end portion of the right inclined surface 10 and the outer end portion of the left inclined surface 11. The dewatering hole 6 may be formed in the flat portion by burring. And the above-mentioned stainless steel plate is assembled into a cylindrical shape by bending, and the bottom plate is joined to it to constitute the dewatering tank 4. In this series of manufacturing process, without using the press working so as to reduce the specularity of the stainless steel plate the inclined surfaces of the dewatering tank 4, bending only because it produced the inclined surface of the drying tub 4 and the inclination The inner wall surface of the surface is kept in a mirror state.
[0011]
Next, the dehydrating operation of the centrifugal dehydrator having such a configuration will be described with reference to FIGS. In response to a command from the control unit (not shown), the dehydration tank 4 and the material to be dewatered (B part in FIGS. 1 to 3) accommodated in the tank are rotated at a high speed of 900 rpm for 5 minutes. The dehydrating operation of the material to be dehydrated is executed. And the water | moisture content contained in a to-be-dehydrated object moves to the inner wall surface radially from the rotation center part O of the dehydration tank 4 with the centrifugal force Rn which generate | occur | produces by high speed rotation. Next, the moisture moved to the inner wall surface, that is, the right inclined surface 10 and the left inclined surface 11 is easily moved to the valley by the horizontal component force Bn generated along each inclined surface. Thereby, the water | moisture content is discharged | emitted toward the outer tank 2 from the dehydration hole 6 formed in a trough part.
[0012]
As described above, since each inclined surface constituting the wall surface of the dehydrating tank 4 is maintained in a mirror state, when the object to be dehydrated is taken out from the dehydrating tank after the dehydrating operation, the accommodation state is confirmed like a kaleidoscope. it can. Thereby, the user can look into the bottom of the dewatering tank 4 and prevent leftover of small items such as socks and handkerchiefs located at the bottom on the near side of the tank. Further, since the boundary between the surface of the material to be dehydrated in the dewatering tank 4 and each inclined surface is in contact with each other at a predetermined angle, the centrifugal force and the component force generated along each inclined surface are greatly utilized. it can. Therefore, the dewatering performance of the entire object to be dehydrated can be improved.
[0013]
Embodiment 2. FIG.
FIG. 4 is a block diagram showing another embodiment of the centrifugal dehydrator according to the present invention, and FIG. 5 is a horizontal sectional view of the dewatering tank 4. 4 and 5, the same reference numerals as those in the conventional example and the first embodiment indicate the same or corresponding parts. Reference numeral 12 denotes a trough formed between the outer end of the right inclined surface 10 and the outer end of the left inclined surface 11 made of a mirror-finished stainless steel plate that constitutes the wall surface of the dehydration tank 4, and is outside the center of rotation. This is a relatively narrow drainage groove provided to protrude from the wall. For example, the drainage grooves 12 are provided so as to be vertically elongated from the upper part to the lower part of the dewatering tank 4, and a plurality of dewatering holes 6 are formed in a portion corresponding to the bottom surface of the drainage grooves 12. In addition, the method of producing the wall surface of the dehydration tank 4 uses the bending method for the purpose of improving the mirror surface property of the stainless steel plate as in the first embodiment.
[0014]
Next, the dehydrating operation of the centrifugal dehydrator having such a configuration will be described using FIG. 4 and FIG. 5 together. Moisture contained in the material to be dehydrated moves to the right inclined surface 10 and the left inclined surface 11 constituting the inner wall surface of the tank by the centrifugal force action generated by the high speed rotation of the dewatering tank 4. Since the boundary between the surface of the material to be dehydrated and each inclined surface is in contact with each other at a predetermined angle as in the first embodiment, the centrifugal force generated along each inclined surface is greatly increased. Available. Thereby, the water | moisture content which moved to each inclined surface moves to the drain groove 12 easily with the horizontal component force which generate | occur | produces along the surface. And the water | moisture content collected by the drainage groove | channel 12 passes the dehydration hole 6 formed in the location, and is discharged | emitted through a predetermined | prescribed path | route. Accordingly, it is possible to improve the water drainability of the object to be dehydrated, that is, the dewatering performance.
[0015]
Alternatively, the dewatering tank 4 may be configured so that the inner diameter increases toward the upper opening, and the dewatering hole 6 may be formed only in the upper part of the drainage groove 12 provided on the inner wall surface. Furthermore, it is not necessary to form the dewatering hole 6 in the drain groove 12. Thereby, the water | moisture content of the to-be-dehydrated thing collected in the drainage groove | channel 12 moves to the upper side of the dehydration tank 4 by the vertical component force which generate | occur | produces along the inclined surface inclined in a perpendicular direction. Then, the moved moisture passes through the gap between the dewatering hole 6 or the waterproof cover 3 and the balancer 9 formed above and is discharged into the outer tub 2.
[0016]
Further, as shown in FIG. 6, a plurality of planar stainless steel plates are formed in a polygonal shape by, for example, a bending method so that the wall surface is inclined at a predetermined angle with respect to the radiation from the rotation center portion O of the dehydrating tank 4. A plurality of them may be arranged. And you may form the dehydration hole 6 in the corner | angular part of the polygonal shape. Further, as shown in FIG. 7, the inclined surface 14 may be provided by causing each flat surface of the polygonal wall surface to protrude in an arc shape on the rotation center side. In addition, you may make it provide an inclined surface by making each flat surface of the polygonal-shaped wall surface protrude in the circular arc shape in the centrifugal direction side in FIG. It is important to prepare the wall surface of the dehydration tank 4 made of a stainless plate having such a shape so that the specularity does not deteriorate.
[0017]
In addition, the dehydrating tank 4 can be rotated at a rotational speed of 900 rpm for 5 minutes, for example, in addition to rotating at the rotational speed of 600 rpm for 4 minutes from the first half stage, ie immediately after the start of rotation. It may be rotated only at a rotational speed of 900 rpm. As a result, the moisture contained in the laundry is moved in the fiber in the first half, and the water is concentrated in the valleys of the inner wall surface by centrifugal force and its component force in the second half to improve drainage and save energy. It is possible to ensure the dewatering performance of the material to be dehydrated in consideration.
[0018]
As described above, since each inclined surface constituting the wall surface of the dehydrating tank 4 is maintained in a mirror state, it is not necessary to look into the bottom of the tank when the material to be dehydrated is taken out from the dehydrating tank 4 after the dehydrating operation. For example, it is possible to prevent small items such as socks and handkerchiefs from being left behind. Further, since the boundary between the surface of the material to be dewatered accommodated in the dewatering tank 4 and each inclined surface is in contact with each other at a predetermined angle, the moisture contained in the material to be dewatered moves while moving the fibers. It concentrates on the drainage groove | channel 12 etc. which are provided in a wall surface, and can improve a dehydration performance by this.
[0019]
Note that the dewatering tub having a stainless steel plate wall surface configured to maintain the specularity according to the present invention can also be applied to a washing and dewatering tub in a fully automatic washing machine.
[0020]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
[0021]
The method of manufacturing the inner wall surface of a centrifugal dehydrator according to the present invention includes a method of manufacturing a wall surface of a dewatering tank of a centrifugal dehydrator that rotates a dewatering tank at a high speed to dehydrate a material to be dewatered therein. A stainless steel plate with a mirror finish on the inner surface of the body so that the dehydrated matter can be seen, and a plurality of inclined surfaces are formed by bending in the centrifugal direction, and a valley formed inside the tank by two adjacent inclined surfaces The portion is formed with a flat portion narrower than the inclined surface, and a dewatering hole is formed in the flat portion by burring, and when the dehydrated material is taken out from the tank after the dehydration operation, the accommodation state is It is possible to obtain the inner wall surface of the dehydration tank which can be seen and confirmed like a kaleidoscope. As a result, small items located at the bottom of the front side of the dewatering tank can be taken out without being left behind, and the boundary between the surface of the material to be dewatered contained in the dewatering tank and each inclined surface is at a predetermined angle with each other. Thus, it is possible to obtain a dehydration tank that can efficiently drain water contained in the portion to be dehydrated.
[0024]
[Brief description of the drawings]
FIG. 1 is a configuration diagram illustrating a centrifugal dehydrator according to a first embodiment.
FIG. 2 is a horizontal cross-sectional view of a main part of the dehydration tank in the first embodiment.
FIG. 3 is a configuration diagram illustrating another centrifugal dehydrator according to the first embodiment.
FIG. 4 is a configuration diagram illustrating a centrifugal dehydrator according to a second embodiment.
FIG. 5 is a horizontal cross-sectional view of a main part of a dewatering tank according to a second embodiment.
FIG. 6 is a horizontal cross-sectional view of a main part of another dewatering tank according to the second embodiment.
FIG. 7 is a horizontal cross-sectional view of a main part of still another dewatering tank according to the second embodiment.
FIG. 8 is a configuration diagram showing a conventional centrifugal dehydrator.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Outer box, 2 Outer tank, 3 Waterproof board, 4 Dehydration tank, 5 Rib, 6 Dewatering hole, 7 Motor, 8 Drain hose, 9 Balancer, 10 Right inclined surface, 11 Left inclined surface, 12 Drain groove, 13 Inclined surface, 14 Arc-shaped inclined surface.

Claims (2)

Oite the drying tub to the manufacturing method of the dewatering tank inner wall surface of the centrifugal dehydrator for dehydrating the object dehydrate contained in the tank by high speed rotation, facilities a mirror finish on the barrel portion side face as the dehydrate objects appear A plurality of inclined surfaces are formed on the stainless steel plate by bending with respect to the centrifugal direction, and a flat portion having a narrower width than the inclined surface is formed in a trough formed inside the tank by two adjacent inclined surfaces. A method for producing an inner wall surface of a dewatering tank of a centrifugal dehydrator, wherein the dewatering holes are formed by burring in the flat part . 2. The method of manufacturing a dewatering tank for a centrifugal dehydrator according to claim 1, wherein the dewatering hole is formed and then assembled into a cylindrical shape, and a bottom plate is coupled thereto to form a dewatering tank .

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