JPH02274285A - Turning injection device - Google Patents

Abstract

PURPOSE:To generate a water flow of a preferable state and obtain satisfactory washing effect by forming a nearly radial rapid cutting plate protruding into a hollow part without interference with a pressing plate in a position near an injection port. CONSTITUTION:In the upper disc 47 of a casing 46, a plurality of rapid cutting plates 52 protruding downward into the hollow part 46a of the casing 46 and radially extending are formed. Injection ports 53 opened from the inside of the hollow part 46a to the upper surface are formed in plural positions radially spaced along the both sides of each rapid cutting plates 52 in the state where those situated on the center side are turned in nearly vertical direction, and those situated more away from the center are turned in the direction more inclined to the outer circumferential side. Hence, a part shaded from direct spray of a wash water is hardly formed, the satisfactory washing effect can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is installed in a storage chamber in which fluid is stored, such as a washing tub of a washing machine, and is driven to rotate by an electric motor to substantially rotate within the storage chamber. The present invention relates to a swirl jetting device that generates a flow of fluid jetting in an axial direction.

Background Art and Problems to be Solved by the Invention In general, a washing machine rotates a rotary body supported at the bottom of the washing tub by driving an electric motor, and the radius of the rotary body that protrudes on two sides is The directional vanes create a swirling flow in the wash water in the washing tub to remove dirt from the laundry, but if the simple swirling flow continues, the laundry will become entangled with each other and the dirt will not be sufficiently removed. Since the laundry cannot be dropped, the rotating body rotates forward and reverse alternately at regular intervals to prevent the laundry from getting entangled. However, even with the above-mentioned reversing means, in conventional washing machines, the inside of the washing tub is vigorously agitated for a short period of time immediately after the rotation direction of the rotating body is changed, so that the laundry does not get tangled. After it unravels, the laundry returns to its original tangled state due to the swirling flow that occurs again.
It was not possible to obtain a large cleaning effect, and there was a desire for a device that could generate a complicated water flow that would not cause laundry to become entangled.

Means for Solving the Problems As a means for solving the above-mentioned problems, the present invention provides a rotating body in which a circular pressing plate is formed in a substantially radial direction in a storage chamber in which fluid is stored. Connected to and supported by an electric motor, and housing the rotating body in a circular hollow,
A casing having substantially radial vanes protruding from the outer surface is supported to freely rotate, and the casing has an ejection port disposed at least on the outer peripheral edge and opening from the hollow interior to the outer surface in the substantially rotational axis direction; An inlet is formed at the center of rotation to communicate the inside of the hollow with the outside, and a cut-off plate in a substantially radial direction protrudes into the hollow so as to be able to correspond to the pressing plate without interfering with the pressure plate at a position near the spout. The configuration was as follows.

In addition, when the device of the present invention is used in a washing machine, a rotating body is supported on the bottom surface of a washing tub serving as a storage chamber with the rotating shaft oriented in a substantially vertical direction, and a spout and a blade plate are formed on the top surface of the casing. In addition, when the device of the present invention is used in a dishwasher, the rotary body and its rotating shaft may be placed in a reservoir formed in the bottom of a cleaning box, which serves as a storage chamber, to store cleaning water. The casing is oriented approximately vertically and is supported so that the press plate is immersed in the cleaning water in the reservoir, and a spout is formed on the upper surface of the casing, and the inlet and the vane plate are provided on the lower surface so that they are immersed in the cleaning water in the reservoir. The configuration may be such that it is formed as follows.

Functions and Effects of the Invention The present invention has the above configuration, and when the rotating body is rotated by driving the electric motor with the vanes of the casing immersed in the fluid, the fluid flowing into the hollow of the casing from the inlet is rotated. By being pushed in the circumferential direction by the pressing plate of the body, it rotates in the same direction as the rotating body, and is pressurized to the outer circumferential side by the centrifugal force generated by this rotational movement, and along with this,
The casing, which receives the rotational driving force generated by the fluid rotating inside the hollow of the casing and pressing the cutout plate, is restrained from rotating due to the resistance force exerted on the vane plate by the fluid outside of the casing, resulting in a rotating body. Because it rotates at a slower speed than the casing, the fluid in the hollow of the casing is pressurized in the circumferential direction between the two plates by the pumping action caused by the pressure 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 storage chamber in substantially the same direction as the rotation axis.

Therefore, when the device of the present invention is used in a washing machine as set forth in claim 2, the same swirling flow as in the past due to the blades of the rotating casing is created in the washing tub.
A complicated water flow is generated by combining the swirling jet flow that jets upward from the spout and flows into the casing from the inlet, which reliably prevents laundry from getting entangled. When the amount of water increases, the resistance force acting on the vane plate increases and the difference in rotational speed between the casing and the rotating body increases, which increases the pressurizing force due to the pumping action of the cutting plate and the pressing plate, resulting in swirling jets. As the jetting pressure of the flow increases, the power to agitate the laundry by the swirling jetting flow is automatically adjusted according to the amount, so a suitable water flow is always created in the washing tub, resulting in a good water flow. A cleaning effect can be obtained.

Furthermore, when the device of the present invention is used in a dishwasher as described in claim 3, the washing water introduced into the casing from the inlet is pressurized by centrifugal force and pump action. As a result, the washing water is spouted upward in a spiral pattern from the rotating spout and is sprayed onto the dishes placed above the casing, and then drops into the reservoir by dripping or flowing along the inner wall of the washing box. Go back and squirt from the spout again. Therefore, conventional dishwashers rotate the rotary container by pumping wash water into the circular rotary container and ejecting it in the circumferential direction from the rotation drive spout on the side of the container. Since the cleaning water was spouted upward from the cleaning spout on the top surface, the rotation direction was limited to one direction.
On the surface of tableware, there was a large shaded area where washing water could not be sprayed directly, reducing the dirt removal effect.In contrast, the device of the present invention uses an electric motor to drive the rotation of the casing containing the spout. Since this is done by climbing up and rotating the rotating body, the casing can be rotated in both forward and reverse directions by using a reversible electric motor that can be driven in both forward and reverse directions. The dishwasher sprays cleaning water directly over almost the entire surface, resulting in an even and good cleaning, whereas traditional dishwashers require a pump to forcefully pump the cleaning water. Since the apparatus of the present invention has a pump function, there is no need to separately provide a pump for pressure-feeding washing water, and the dishwasher can be made smaller.

Embodiment Hereinafter, a first embodiment of the present invention will be explained based on FIGS. 1 to 4.

The rotating spouting device (2) of the first embodiment is used in a washing machine, and an electric motor 3 that drives in both forward and reverse directions is installed at the bottom of the washing tub 2, protruding upward and parallel to the outer periphery. A drive shaft 4 on which a surface 5.5 is formed is fixed in a protruding state into the washing tub 2, and a disk-shaped rotating body 6 is attached to the drive shaft 4, and a cylindrical portion 7 is formed in the center of the drive shaft 4. The upper surface of the rotor 6 has a plurality of pressing plates 9 extending in the radial direction with the plate surfaces perpendicular to the circumferential direction. 45° l in the circumferential direction
It is jutted upwards with a gap in the middle.

The drive shaft 4 has an upper circular disk +1 with an opening 12 formed in the center, and a lower circular disk with a drain hole 1.1 located eccentrically from the center! A circular casing 10 is formed by forming a hollow 10a inside by fixing water-tightly water-tightly the cylindrical ring casing 10 and the ring casing 10 at the periphery of the circular casing 10. By fitting the center hole 17 of the disk 13, the rotating body 6 is supported to rotate relatively freely and concentrically with the rotating body 6, and in the hollow 10a of the casing 10, the rotating body 6 is connected to its lower surface and outer peripheral edge. are accommodated in a state where they correspond to the inner peripheral surface of the lower disk 13 with a slight gap. Hollow casing IO! Inside the oa, there are three positions on the lower surface of the upper disk 11 at intervals of 120 degrees in the circumferential direction, and the inner circumference of the upper disk 11 extends in the radial direction with the plate surface perpendicular to the circumferential direction. The cut-off plate 2o that reaches the upper part is formed to protrude downward so as not to interfere with the pressing plate 9 of the rotating body 6 and to be able to correspond to the outer peripheral edge of the pressing plate 9 with a slight interval. In the disk II, upward spout ports 21 that open from the inside of the hollow 10a of the casing 10 to the upper surface are provided at a plurality of positions approximately radially spaced apart along both sides of each cut plate 20 at the outer peripheral edge of the upper disk 11. are formed in order from the periphery of the opening 12 to the periphery of the opening 12,
A lid 22 is attached to the opening 12 and has an inlet 23 formed of a large number of small holes.
On the top surface, vane plates I9 extending in the radial direction with the plate surfaces substantially perpendicular to the circumferential direction are projected upward at three positions spaced apart by +20° in the circumferential direction. .

The rotating spouting device l of the first embodiment has the above-mentioned configuration, and starts driving the electric motor 3 with wash water and laundry (not shown) placed in the washing tub 2 to rotate the rotating body 6 in the forward direction. Then, the cleaning water in the hollow + Oa of the casing 10 is pushed in the circumferential direction by the pressing plate 9 of the rotating body 6, and rotates while gradually increasing the speed, and the centrifugal force generated by this rotation moves the cleaning water to the outer circumferential side. During this time, the cutting plate 20 of the casing 10 receives a rotational driving force in the same direction as the rotating body 6 due to the fluid pressure of the washing water rotating inside the casing 10, but it protrudes above the casing IO. Since the vane plate 19 receives a resistance force from the washing water in the washing tub 2, the casing lO starts to rotate slowly behind the rotating body 6, and gradually increases its rotational speed until it reaches an almost constant speed that is slower than the rotating body 6. It continues to rotate at a speed of The cleaning water between the front surface of the pressing plate 9 and the rear surface of the cutting plate 20 in the direction is pressurized in the circumferential direction by the pump action caused by the relative proximity of both plates 9 and 20, and this pressurizing force is applied to the casing 10. It is high at the beginning when the rotational speed is slow and the speed difference corresponding to the rotating body 6 is large, gradually decreases as the rotational speed of the casing IO becomes faster, and remains almost constant when the rotational speed of the casing 10 becomes stable.

Therefore, the pressurizing force mainly due to the centrifugal force is applied from the spout 21 located on the front side in the rotation direction of the separator plate 20, and the centrifugal force and the pump Due to the large pressing force caused by the action,
The cleaning water inside the casing 10 is directed upward, and the spout 21 on the outer periphery side with a large centrifugal force spouts out with strong jetting pressure, and as a result of this jetting, it collects in the center at the upper part of the washing tub 2 and flows downward. A swirling jet flow that circulates through the path of changing direction and flowing into the casing 10 from the inlet 23 is generated, and similarly in the washing tub 2,
Since a spiral swirl flow is generated by the stirring of the vane plate 19 as the casing 10 rotates, a complex water flow is generated in which the swirl jet flow and the swirl flow are combined, and as a result, the laundry is agitated without becoming entangled. The product is evenly immersed in the washing water, and dirt is effectively removed.

In addition, when the forward rotation of the electric motor 3 stops and the rotation of the electric motor 3 starts in the reverse direction after a certain period of time has passed, the rotation of the rotating body 6 stops [for a short period of time, the inertia of the swirling flow in the washing machine 1ff2 Casing by! The rotation of O continues, but inside the casing 10, although the pressurizing force due to centrifugal force decreases due to the attenuation of the rotational force of the washing water as the rotating body 6 stops, the rotation of the rotating body 6 in the opposite direction decreases. As a result of the start, a sudden increase in pressure occurs between the pressing plate 9 and the cutting plate 20 which continues to rotate normally, so as shown by the solid line in FIG. A stream gushes out;
Thereafter, the cleaning water in the casing 1o begins to rotate together with the rotating body 6, increasing the pressurizing force due to centrifugal force, and the casing 10 starts rotating in the same direction as the rotating body 6, reducing the speed difference. When the rotational speed of the casing 10 and the rotational speed of the cleaning water in the hollow 10a become stable, the jetting pressure of the swirling jetting flow is kept almost constant.

In addition, when the fl of the laundry increases, when the casing 10 receives rotational driving force from the rotating body 6, the resistance force acting on the vane plate 19 due to the washing water in the washing tub 2 increases. As a result, the rotational speed of the casing lO is suppressed to a low level and the difference in rotational speed between the pressing plate 9 and the cutting plate 20 increases, and the pressurizing force due to the pumping action of both plates 9 and 20 increases, so that the spout 21 A swirling jet stream with a strong pressure that can sufficiently agitate a large amount of laundry is ejected from the machine. Because the amount of laundry changes, good cleaning effects can be obtained regardless of the amount of laundry.

Next, a second embodiment of the present invention will be described based on FIGS. 5 and 6.

The rotating spouting device 31 of the second embodiment is used in a dishwasher, and a cleaning box 32 accommodates tableware (not shown) such as dishes by placing them on a net shelf (not shown) fixed at an upper position. A shallow circular storage portion 33 for storing cleaning water is formed on the bottom surface of the , and a drive shaft 3 of an electric motor (not shown) is located at the center of the storage portion 33.
4 protrudes upward, and this drive shaft 34 has a plurality of concentrically arranged small-diameter disks 37 and large-diameter annular plates 38 spaced at equal intervals in the circumferential direction and extending in the radial direction. The rotating body 36 connected by the pressing plate 39 has its disk 37
The female threaded hole 41 of the cylindrical portion 40 formed at the center of the drive shaft 34
Upper e:ti:M'- male thread
and a lower 11ζ disk 48, the upper i
Support recess 50 of flat disc 47 and center hole 51 of lower disc 48
By fitting the rotating body 39 into the hollow 46a, the rotating body 39 is supported in a relatively freely rotatable state.

The upper disk 47 of the casing 46 is formed with a plurality of cutting plates 52 that protrude downward into the hollow 46a of the casing 46 and extend in the radial direction.
Spout ports 53 that open from the inside to the top surface are located at a plurality of positions spaced apart in the radial direction along both sides of each cut-off plate 52, with those located on the center side facing approximately vertically, and located away from the center. In addition, the lower disk 48 has an introduction part 55 whose center part protrudes downward in a circular shape, and a concentric part on the bottom surface of the lower disk 48. An inlet 56 is formed at the lower end of the circumferential wall of the introducing portion 55 and a plurality of openings Wf56b spaced apart in the circumferential direction. A plurality of blade plates 57 extending in the radial direction at intervals in the circumferential direction are projecting downward from the lower surface.

The rotating spouting device 31 of the second embodiment has the above-mentioned configuration, and stores dirty dishes in the washing box 32, and also stores washing water in the storage section 33. When the pressing plate 39 of the rotating body 36 is immersed and the rotating body 36 is rotated in one direction by driving the electric motor in this state, the cleaning water inside the casing 46 is pushed by the three pressing plates of the rotating body 36. The casing 46 rotates and moves, is pressurized by centrifugal force, moves toward the outer periphery, and is pushed upward at the outer periphery. However, due to the resistance force acting on the blade plate 57 immersed in the cleaning water in the storage source 33, it rotates at a slower speed than the rotating body 36, and due to this difference in rotational speed, the pressing plate 39 and the cutting plate Washing water is discharged upward from the spout 53 due to the pumping action generated between the spout 52 and the +iQ centrifugal force. Since the spout 53 is rotating, this washing water is ejected in a spiral pattern and is sprayed onto the tableware to remove any particles adhering to the surface of the tableware, and then drips along with the stains on the tableware, or , moves downward along the inner circumferential surface of the cleaning box 32 , returns to the storage section 33 after passing through a filter (not shown), removes spills, food particles, etc., and enters the casing from the inlet 56 . 46 and then ejected from the ejection port 53 again.

Then, after a certain period of time has elapsed, the electric motor temporarily stops and starts driving in the opposite direction to the above, and the casing 4
6 rotates in the opposite direction, and the cleaning water is spouted from the spout 53 in a spiral with a twist opposite to that described above and sprayed onto the dishes, and the casing 46 rotates in both forward and reverse directions. As a result, the washing water is ejected in a 2wL type spiral with different twist directions, and the washing water is directly sprayed onto the dishes from both sides in the circumferential direction, so the washing water is not sprayed directly onto the dishes. There are almost no shadow areas, and a good cleaning effect can be obtained.

[Brief explanation of drawings]

The accompanying drawings show an example of the present invention, and FIG. 1 is a perspective view of the first embodiment, FIG. 2 is a partially cutaway plan view, and FIG.
The figure is a cross-sectional view, Figure 4 is a graph showing changes in the strength of water flow over time, Figure 5 is a partially cutaway plan view of the second embodiment, and Figure 6 is a cross-sectional view. . ■, 31: Rotating jet device 2: Washing tub 32 electric motor 6.36: Rotating body 9.39: Pressing plate l0146:
Casing toa, 46a (casing) hollow I
9.57: Feather plate 20. Sekiri board 2 ■, ・Spout port 23, :Inflow port:Washing box:Storage part

Claims (1)

[Scope of Claims] 1. A circular rotating body formed of a substantially radial pressing plate is connected to and supported by an electric motor in a storage chamber in which fluid is stored, and the rotating body is supported by a circular rotating body. A casing accommodated in a hollow and having substantially radial vanes projecting from the outer surface is supported freely in idle rotation, and a substantially rotating casing disposed at least on the outer peripheral edge of the casing and opening from the inside of the hollow to the outer surface. A spout in the axial direction and an inlet that communicates the inside of the hollow with the outside at the center of rotation are formed, and the inside of the hollow is formed in a position near the spout so that it can correspond to the press plate without interfering with the press plate. A rotating jetting device 2 characterized in that a substantially radial cutting plate is formed that protrudes from the swivel jetting device. 3. The rotating jetting device 3 according to claim 1, wherein the casing is supported in a direction, and the jetting port and the blade plate are formed on the upper surface of the casing. A washing box for a dishwasher comprising a storage section for storing
The rotating body is supported in the storage section with its rotation axis oriented substantially vertically, and the press plate is immersed in the washing water in the storage section, and the spout is formed on the upper surface of the casing, and The swirling jetting device according to claim 1, wherein the inlet and the vane plate are formed so as to be immersed in the washing water in the storage section.