JP2912628B2 - Swirling device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to a storage room, such as a washing tub of a washing machine, in which a fluid is stored, and is rotatably driven by an electric motor. The present invention relates to a swirling ejection device that generates a flow of a fluid ejected in a substantially rotation axis direction.

2. Description of the Related Art Generally, a washing machine is configured such that a rotating body supported on the bottom of a washing tub is rotated by driving an electric motor, and a radial projection formed on an upper surface of the rotating body. The blades create a swirl flow in the wash water in the washing tub to remove dirt from the laundry, but if the simple swirl flow is continued, the laundry becomes entangled with each other and sufficient dirt is removed. Since the rotator cannot be dropped, in order to prevent the laundry from being entangled, the rotating body is alternately rotated forward and backward at regular time intervals. However, even with the above-described reversing means,
In the conventional washing machine, the entanglement of the laundry can be slightly released by the vigorous stirring in the washing tub for a short time immediately after the rotation direction of the rotating body changes, but thereafter, the swirling flow generated again. Accordingly, since the laundry returns to the original entangled state, a large washing effect cannot be obtained, and an apparatus capable of generating a complicated water flow so that the laundry is not entangled has been desired. .

Means for solving the problems The present invention, as means for solving the above problems,
In the storage chamber in which the fluid is stored, a rotating body formed in a circular shape and forming a substantially radial pressing plate is connected to and supported by the electric motor, and the rotating body is housed in a circular hollow, A casing formed by projecting a substantially radial blade plate on the outer surface freely rotates and freely supports the casing, and the casing is provided with at least an outer peripheral edge portion, and a substantially rotational axis direction ejection opening that opens from the inside of the hollow to the outer surface, At the center of rotation, an inflow port that communicates the inside of the hollow with the outside is formed, and a substantially radial settling plate that projects into the hollow so that it can cope with the pressing plate at a position near the ejection port without interfering with the pressing plate. The configuration was formed.

When the apparatus of the present invention is used in a washing machine, a rotating body is supported on a bottom surface of a washing tub serving as a storage room with a rotation axis directed substantially vertically, and a jet port and a blade plate are formed on an upper surface of a casing. When the apparatus of the present invention is used in a dishwasher, a rotating body is rotated in a storage section formed for storing cleaning water on an iron surface of a cleaning box serving as a storage chamber. Is directed substantially vertically, and the pressing plate is supported so as to be immersed in the washing water in the storage part, and a spout is formed on the upper surface of the casing, and the inflow port and the wing plate are immersed in the washing water in the storage part on the lower surface. What is necessary is just to make it the structure formed.

The present invention is configured as described above, and when the rotating body is rotated by driving the electric motor in a state where the blades of the casing are immersed in the fluid, the fluid flowing into the hollow of the casing from the inflow port is rotated. When pressed in the circumferential direction by the pressing plate of the body, the body is rotated in the same direction as the rotating body, and is pressed to the outer peripheral side by the centrifugal force generated by this rotating movement, and is also rotated in the hollow of the casing. The casing which has received the rotational driving force generated by the moving fluid pressing the shear plate is slower than the rotating body because the rotation is suppressed due to the resistance force acting on the blade plate by the external fluid. Because of the rotation at the speed, in the hollow of the casing, the fluid is circumferentially pressurized between the two plates by the pumping action of the pressing plate approaching the cut-off plate. The fluid in the casing pressurized by the pump action and the centrifugal force is ejected from the ejection port into the accommodation chamber in substantially the same direction as the rotating shaft.

Therefore, when the device of the present invention is used in a washing machine as the structure described in the second aspect of the present invention, the same swirling flow as the conventional one by the rotating blades of the casing and the spout are provided in the washing tub. Since a complicated water flow is generated by combining the swirling jet circulating in a path flowing into the casing from the inflow port into the casing, the laundry is reliably prevented from being entangled, and the amount of the laundry is reduced. When the number increases, the resistance force acting on the blade plate increases and the difference between the rotational speeds of the casing and the rotating body increases, so that the pressing force by the pumping action of the settling plate and the pressing plate increases, and the swirling jet flows are ejected. Since the pressure is increased, the force for stirring the laundry by the swirling jet flow is automatically adjusted in accordance with the amount thereof, so that a water flow in a favorable state is always generated in the washing tub, and good washing is performed. The effect can be obtained.

Further, when the apparatus of the present invention is used in a dishwasher as the configuration described in claim 3, the washing water guided into the casing from the inlet is pressurized by centrifugal force and pump action. As a result, the washing water is spouted upward while drawing a spiral from the spout that rotates and is sprayed on the tableware placed above the casing, and thereafter is dropped and stored along the inner wall of the washing box. It returns to the inside and blows out from the spout again. Therefore, the conventional dishwasher rotates the rotating container by rotating the rotating container by pumping the washing water into the circular rotating container by a pump and ejecting the washing water in a circumferential direction from a rotary driving spout on the side surface thereof. Since the washing water was spouted upward from the washing spout on the upper surface, the rotation direction was limited to one direction,
On the surface of the tableware, the area of the shade where the washing water is not directly sprayed has a large area, and the effect of removing dirt is small.On the other hand, in the apparatus of the present invention, the rotation of the casing having the ejection port is used to drive the electric motor. Therefore, the casing can be rotated in both forward and reverse directions by using a reversible motor capable of driving in both forward and reverse directions as the electric motor. Cleaning water can be sprayed directly over almost the entire surface of the surface to provide good cleaning without dirt removal, and a conventional dishwasher required a pump to pump the cleaning water. On the other hand, since the apparatus of the present invention has a pump function, there is no need to separately provide a pump for cleaning water pressure feeding, and the dishwasher can be downsized.

Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

The swirling jet device 1 of the first embodiment is used in a washing machine, and an electric motor 3 driven in both forward and reverse directions is provided at the bottom of the washing tub 2 so as to protrude upward and be parallel to the outer periphery. The drive shaft 4 having the surfaces 5 and 5 is fixed to the washing tub 2 so as to protrude into the washing tub 2. A rotating body 6 having a disc shape is attached to the drive shaft 4 by a cylindrical portion 7 formed at the center thereof. A plurality of pressing plates 9 extending in the radial direction with the plate surface perpendicular to the circumferential direction are provided on the upper surface of the rotating body 6. It protrudes upward at 45 ° intervals in the circumferential direction.

The drive shaft 4 has an upper disk with an opening 12 formed in the center.
A circular casing 10 in which a hollow 10a is formed inside by fixing the lower disk 13 formed with a drain hole 14 at a position eccentric from 11 and the center thereof in a watertight manner,
The annular portion 16 supported by the arm 15 and the center hole 17 of the lower disk 13 are fitted into the opening 12 of the upper disk 11 so as to be relatively freely rotatable and concentric with the rotating body 6. The rotating body 6 is accommodated in the hollow 10a of the casing 10 with its lower surface and outer peripheral edge corresponding to the inner peripheral surface of the lower disk 13 with a slight gap. Casing 10
In the hollow 10a of the upper disk 11, the lower surface of the upper disk 11 extends radially at three positions circumferentially 120 ° apart from each other at 120 ° intervals, with the plate surface extending at right angles to the circumferential direction. The cut-off plate 20 reaching the inner periphery is projected downward so as not to interfere with the pressing plate 9 of the rotating body 6 and to be able to cope with the outer peripheral edge of the pressing plate 9 at a small interval. The upper disk 11 has a casing
Upward jet 21 opening from the inside of 10 hollow 10a to the upper surface
Are formed in order from the outer peripheral edge of the upper disk 11 to the peripheral edge of the opening 12 at a plurality of positions substantially radially spaced along both sides of each set cutting plate 20, and are formed in the opening 12. Is covered with a lid 22 formed with an inflow port 23 composed of a large number of small holes, and on the upper surface of the upper disk 11 at three positions spaced 120 ° apart in the circumferential direction. In each case, a blade plate 19 extending radially with its plate surface substantially perpendicular to the circumferential direction is formed to project upward.

The swirling jet device 1 of the first embodiment has the above-described configuration, and starts driving the electric motor 3 in a state where a latent image (not shown) and laundry are put in the washing tub 2 to rotate the rotating body 6 in the forward direction. Then, the washing water in the hollow 10a of the casing 10
By being pushed in the circumferential direction by the pressing plate 9, it is rotated while gradually increasing its speed, and is pressed to the outer peripheral side by the centrifugal force generated by this rotating movement. Due to the fluid pressure of the washing water, the cut-off plate 20 of the casing 10 receives a rotational driving force in the same direction as the rotating body 6, but the blades 19 protruding above the casing 10 form the washing water in the washing tub 2. From being resisted by
The casing 10 starts rotating slowly with a delay from the rotating body 6, gradually increases its rotation speed and continues to rotate at a substantially constant speed slower than the rotating body 6, and at this time, the casing 10 and the rotating body 6 The pressing plate 9 rotates at a higher speed than the pressure plate 20 due to the difference in rotation speed between the casing 10 and the casing 10.
In the inside, the washing water between the front surface of the pressing plate 9 and the rear surface of the cut-off plate 20 in the rotating direction is circumferentially pressurized by a pump action due to the relative approach of the two plates 9, 20. The pressing force is high in the initial stage when the rotation speed of the casing 10 is low and the speed difference corresponding to the rotating body 6 is large, gradually decreases as the rotation speed of the casing 10 increases, and becomes substantially constant when the rotation speed of the casing 10 is stabilized. Will be kept.

Accordingly, the centrifugal force is exerted from the ejection port 21 located on the front side in the rotation direction of the setting plate 20 mainly by the pressing force due to the centrifugal force. The washing water in the casing 10 is directed upward by the large pressurizing force of the pumping action, and the jetting water 21 on the outer peripheral side having a large centrifugal force is jetted at a higher jetting pressure. In the upper part, the casing 10 is turned downward while collecting
A circulating swirling jet flows along the path of flowing into the inside of the washing tub 2.
As a result of the agitation of the blades 19 caused by the rotation of the blades, a spiral swirl flow is generated, so that a complicated water flow is generated in which the swirling jet flow and the swirl flow are combined, whereby the laundry is stirred without being entangled. It is soaked evenly in the washing water to effectively remove dirt.

When the forward rotation of the electric motor 3 is stopped and the driving in the reverse direction is started after a certain period of time, a short time after the rotation of the rotating body 6 is stopped, the inertial force of the spiral flow in the washing tub 2 is reduced. As a result, the rotation of the casing 10 continues. In the casing 10, the pressing force due to the centrifugal force decreases due to the decrease in the rotational force of the washing water due to the stop of the rotating body 6, but the rotating body 6 moves in the opposite direction. As a result of the start of rotation, a sharp increase in pressure occurs between the pressing plate 9 and the continuous cutting plate 20 which continues to rotate forward, and as shown by the solid line in FIG. The swirling jet flow is jetted by the jet pressure, and thereafter, the washing water in the casing 10 starts rotating and moving together with the rotating body 6 to increase the pressing force due to the centrifugal force, and the casing 10 moves in the same direction as the rotating body 6. The speed difference is small by starting rotation to Pressure is reduced by Kunatsute pumping action, the rotational speed and the hollow casing 10
When the rotation speed of the washing water in 10a is stabilized, the jet pressure of the swirling jet is kept almost constant.

If the amount of laundry increases, the casing
When the rotating body 10 receives the rotational driving force from the rotating body 6, the washing water in the washing tub 2 increases the resistance force acting on the blades 19, so that the rotating speed of the casing 10 is suppressed to a low level and the pressing is performed. As the difference between the rotation speeds of the plates 9 and 20 increases, the pressure applied by the pumping action of the plates 9 and 20 increases, so that a large amount of laundry is sufficiently stirred from the spout 21. Since the swirling jet with a strong pressure that can be spouted is spouted, and the jet pressure of the swirling jet flows automatically changes to a suitable strength according to the amount of the laundry, a good A cleaning effect can be obtained.

Next, a second embodiment of the present invention will be described with reference to FIGS.

The swirling device 31 according to the second embodiment is used for a dishwasher, and is a washing box 32 for accommodating tableware (not shown) such as a dish mounted on a net shelf (not shown) fixed at an upper position. A shallow circular storage part 33 is formed on the bottom surface of the base for storing the washing water, and the storage part 33 is formed.
A drive shaft 34 of an electric motor (not shown) protrudes upward at a center position of the drive shaft 34. The drive shaft 34 has a concentrically arranged small-diameter disk 37 and a large-diameter annular plate 38 in the circumferential direction. A rotating body 36 connected by a plurality of pressing plates 39 extending at equal intervals in the radial direction is formed in a cylindrical portion formed at the center of the disk 37.
The female screw hole 41 of 40 is screwed into the male screw portion 43 at the upper end of the drive shaft 34 and fixed with a nut 45 so as to be integrally rotated so as to be integrally rotated. A casing 46 composed of a lower disk 48 is fitted into the support recess 50 of the upper disk 47 and the center hole 51 of the lower disk 48, so that the casing 46 accommodates the rotating body 39 in the hollow 46a so that the casing 46 can be freely rotated. It is supported by.

The upper disk 47 of the casing 46 has a hollow
A plurality of radially extending protruding plates 52 are formed in 46a and extend downward in the radial direction along the both sides of the respective protruding plates 52. At a plurality of positions spaced apart from each other, those located on the center side are oriented substantially vertically, and those located farther away from the center are oriented in a direction inclined toward the outer peripheral side,
In addition, the lower disk 48 has a plurality of annular opening grooves 56a concentrically arranged on the bottom surface thereof and a lower end of a peripheral wall of the introduction portion 55. A plurality of circumferentially spaced openings 56b are formed in the portion, and an inlet 56 formed of a plurality of circumferentially spaced openings 56b is formed on the lower surface of the lower disk 48. Wing plate 57 is projected downward.

The swirling jet device 31 according to the second embodiment has the above-described configuration, accommodates dirty dishes in the washing box 32, stores washing water in the storage section 33, and stores the casing 46 in the washing water.
The lower disk 48 and the pressing plate 39 of the rotating body 36 are immersed, and in this state, the rotating body 36 is rotated in one direction by driving the electric motor.
The washing water that is rotated by being pushed by the centrifugal force and moves to the outer peripheral side while being pushed up at the outer peripheral portion is pressed by the centrifugal force. Thereby, the casing 46 becomes
Due to the resistance acting on the blades 57 immersed in the washing water in the storage section 33, the blades 33 rotate at a speed lower than that of the rotating body 36, and due to the difference between the rotation speeds, the pressing plate 39 and the sekiri plate 52 Between the jetting port 53 and the pumping action caused by the centrifugal force.
The washing water spouts upward from. This washing water is
Since 53 is rotating, it spurts out spirally and sprays it on the tableware to remove the dirt attached to the surface, and then drops along with the tableware dirt, or the inner periphery of the latent image box 32 It moves downward by traveling along the surface, and returns to the storage unit 33 in a state where dirt and food residues are removed by passing through a filter (not shown),
It circulates in a path of being guided from the inflow port 56 into the casing 46 and being ejected from the ejection port 53 again.

Then, after a certain time has elapsed, when the electric motor is temporarily stopped to start driving in the opposite direction to the above, the casing
46 rotates in the reverse direction, and the washing water is spouted from the spout 53 while drawing a spiral of reverse twist to the above and is sprayed on the tableware, so that the casing 46 rotates in both forward and reverse directions. As a result, the washing water is ejected while drawing two kinds of spirals having different twist directions, so that the washing water is directly sprayed from both sides in the circumferential direction, so that the washing water is directly sprayed. Therefore, there is almost no negative part, and a good cleaning effect can be obtained.

[Brief description of the drawings]

The accompanying drawings show an embodiment of the present invention. FIG. 1 is a partially cutaway perspective view of the first embodiment, FIG. 2 is a partially cutaway plan view, FIG. 3 is a sectional view, and FIG. FIG. 5 is a graph showing a change in the strength of a water flow with the change of the flow rate. FIG. 5 is a partially cutaway plan view of the second embodiment, and FIG. 6 is a sectional view. 1, 31: rotating jetting device, 2: washing tub, 3: electric motor, 6, 3
6: rotating body, 9, 39: pressing plate, 10, 46: casing, 10a, 4
6a: Hollow (of casing), 19, 57: Blade, 20, 52: Sekiri, 21, 53: Spout, 23, 56: Inlet, 32: Cleaning box, 33: Reservoir

Claims (3)

(57) [Claims] 1. A rotating body having a circular shape and having a substantially radial pressing plate formed therein is connected to and supported by an electric motor in a storage chamber in which a fluid is stored. A casing formed by projecting a substantially radial blade plate on the outer surface of the casing is freely rotatably supported, and the casing is disposed at least at the outer peripheral edge thereof and opens in the hollow from the hollow to the outer surface in a substantially rotational direction. And an inflow port that connects the inside of the hollow to the outside at the center of rotation, and protrudes into the hollow so as to be able to cope with the pressing plate at a position near the outlet without interfering with the pressing plate. Swirling device characterized by forming a substantially radial cross section plate 2. The washing machine according to claim 1, wherein the housing is a washing tub of a washing machine, and the rotating body is supported on a bottom surface of the washing tub with a rotating shaft directed substantially vertically. Claim 1 characterized in that a blade plate is formed.
Swirl jet device described in item 3. A washing box for a dishwasher, wherein said storage chamber has a storage section for storing washing water on a bottom surface, wherein said rotating body is provided in said storage section with a rotation axis substantially in a vertical direction. And the pressing plate is supported so as to be immersed in the washing water in the retaining portion, and the jet port is formed on the upper surface of the casing, and the inflow port and the blade plate are disposed on the lower surface in the storage portion. 2. A swirling jet device according to claim 1, wherein said swirling jet device is formed so as to be immersed in said washing water.