Source: https://patents.google.com/patent/FR2711503A1/en
Timestamp: 2020-07-04 20:01:53
Document Index: 58174549

Matched Legal Cases: ['art 3', 'arts 28', 'art 28', 'art 28', 'art 28', 'art 3', 'art 28', 'art 28', 'art 28']

FR2711503A1 - Supplementary washing device for dishwasher - Google Patents
Supplementary washing device for dishwasher Download PDF
FR2711503A1
FR2711503A1 FR9412612A FR9412612A FR2711503A1 FR 2711503 A1 FR2711503 A1 FR 2711503A1 FR 9412612 A FR9412612 A FR 9412612A FR 9412612 A FR9412612 A FR 9412612A FR 2711503 A1 FR2711503 A1 FR 2711503A1
FR9412612A
FR2711503B1 (en
Jeon Si Moon
Kang Seong Ku
1994-10-21 Application filed by Gold Star Co Ltd filed Critical Gold Star Co Ltd
1995-05-05 Publication of FR2711503A1 publication Critical patent/FR2711503A1/en
1996-01-26 Application granted granted Critical
1996-01-26 Publication of FR2711503B1 publication Critical patent/FR2711503B1/en
239000007921 sprays Substances 0.000 claims abstract description 24
The present invention relates to an additional washing device for a dishwasher, which comprises a tank 1 with spray arms 2 for spraying onto the plates the washing water supplied by a supply water pipe 37, an arm additional circular 34 rotated by the washing water flowing outside through a static pressure dissipating means and a spouting means formed on the additional circular arm 34 for spouting the wash water on all plates. The projection means consists of blades 35 in the form of a spiral fixed on the additional arm 34 and having a height decreasing in the direction of the circumference or a combination of blades having a different length and curves.
ADDITIONAL WASHING DEVICE
The present invention relates to an additional washing device for dishwashers, more particularly to an additional washing device for dishwashers which comprises an additional spraying device for a uniform projection of the washing water over a larger area.
extent provided in the supply water pipe
both the wash water to the spray arms.
The device, the operation and the problems
relating to a dishwasher of the prior art are explained
ques below with reference to Figures 1 to 5.
Figures 1 and 2 show a dishwasher of
A circulation pump 10 at the bottom of a tank 1 supplies washing water to the upper and lower spray arms 2 and 11. The supplied washing water is sprayed through spray nozzles 8 in the upper and lower projection arms 2 and 11 by dropping the dirt from the dishes placed on upper and lower supports 12 and 13. The fallen dirt is filtered by a filter 14 at the bottom of the tank 1. The water from washing is circulated by the circulation pump 10, recycled for determined durations of
washing and rinsing and discharged at the end of washing.
The upper projection arm 2 comprises projection nozzles 8 on its upper and lower sides and the lower projection arm 11 comprises projection nozzles on its upper part. Therefore both sides of
plates 9 on the lower support 13 can be clean-
toyed. The feed water conduit 18 connected to the upper spray arm 2 has a feed water guide 3 at its end. The feed water guide 3 has an additional arm 4a which is rotatably mounted therein as an additional washing means and the additional arm 4a has a plurality of spiral flow guides a having the same height with respect to each other. to the others and attached to its lower side. The various spiral flow guides 5a are struck by the washing water sprayed from the spray nozzles 8 located in the spray arm 2 to spray it over a larger area. However, these spiral flow guides 5a formed on the additional arm 4a of the dishwasher of the prior art have a limited projection range because the flow guides 5a have the same height relative to each other. Consequently, in the case where a greater extent of projection is desired, the radius of the additional arm 4a must be greater but it is then possible for the additional arm 4a to strike the plates 9. We will now explain another device art
shown in Figures 3 to 5.
The general device of the prior art shown in Figures 3 to 5 is similar to the device of the prior art illustrated in Figures 1 and 2. The device
the prior art shown in Figures 3 to 5 is character-
risé in that a water supply part 3 'has a projection element 28 which is connected to it. The projection element 28 comprises a first, a second and a
third annular projection parts 28a, 28b and 28c.
The first annular projection part 28a comprises a plurality of projection nozzles 28d and the second annular projection part 28b is larger than the third
annular projection part 28c.
With the above arrangement, the washing water from the water supply part 3 ′ is supplied to the spray arm 2 via a hollow internal element of the spray element 28. At the same time, the washing water projected through the projection nozzles 28d formed at the top circumference of the projection part 28 falls on the second annular projection part 28b and the third annular projection part 28c to spray around the circumference in order to wash the upper part
plates 9.
However, the device of the prior art cannot provide a uniform projection of the washing water on all the plates 9 located on the upper support. Furthermore, the device of the prior art has these problems that the pressure and the quantity of washing water are reduced significantly due to the dissipation of the dynamic pressure of the washing water flowing through the duct.
feed water 18.
The object of the present invention is to provide an additional washing device for a dishwasher which
In accordance with the present invention, this object is obtained by providing an additional washing device for
dishwasher comprising a tub forming an external wall
upper part of a dishwasher, spray arms formed in the tank to spray the washing water onto dirty plates, a feed water pipe to supply washing water to the spray arms at a fixed pressure, static pressure dissipating means formed in the supply water line to cause the wash water to flow out of the supply water line through
the static pressure of the washing water, an additional arm
circular element rotated by the washing water flowing outward through the static pressure dissipating means and a spouting means formed on the additional circular arm
to make the washing water flow out on all the plates.
Various advantages and features of this
invention will emerge from the detailed description below
made against the accompanying drawings in which:
Figure 1 is a longitudinal section of a washing machine
tableware of the prior art.
FIG. 2 is a perspective view of the additional arm
Figure 3 is a longitudinal section through another washing machine.
Figure 4 is a longitudinal section of a projection element for washing the upper part used
in the dishwasher in Figure 3.
Figure 5 is a perspective view of the projection element for washing the upper part used
Figure 6 is a longitudinal section of an additional washing device of a dishwasher according to the
FIG. 7 is a perspective view of the additional arm
Figure 8 is an enlarged view of part "A" of the
Figure 9 is a longitudinal section illustrating a
Figure 10 illustrates the additional arm of the
figure 9 seen from below.
Figure 11 is a longitudinal section showing a
lée below with reference to Figures 6 to 11 which illustrate embodiments of the present invention. In order to better understand the explanations of the embodiments of the present invention, the same reference symbols have
been used to designate similar and identifiable parties
ques. First of all, an embodiment is explained below.
of the present invention which is illustrated in Figures 6 to 8.
As shown in FIG. 6, an additional washing device for a dishwasher according to an embodiment of the present invention comprises a tank 1 forming an external wall of the dishwasher, an upper projection arm 2 formed on the upper part of the tank 1 for spraying washing water onto the dirty plates, a supply water pipe 37 for bringing washing water to a pressure fixed to the spray arm, a static pressure dissipation means formed in the feed water line to allow the wash water to flow out of the feed water line using the static pressure of the wash water, an additional circular arm 34 animated d '' a movement of rotation by the washing water flowing outside the static pressure dissipation means, a projection means formed on the additional circular arm to spray the washing water on all the plates in exer ing a
different centrifugal force on the wash water.
The static pressure dissipating means consists of a plurality of hollow pins 36, each
arranged so as to enter the feed water conduit
tation 37 or a feed water guide 33 with an inclination to make minimum contact with the arm
additional rotary 34.
The projection device consists of a plurality of
lity of blades 35 fixed on the lower side of the additional arm each arranged in a spiral from the center to the circumference of the additional arm and having a
height decreases as you approach the circumference
ference to rotate the additional arm with the pressure of the effluent wash water exerted on it and spray the wash water on all the plates with the
A description is given below with reference to FIGS. 7 and 8 of the operation of the additional washing device for
above dishwasher in accordance with one embodiment
tion of the present invention.
When pressurized washing water from the circulation pump flows through the feed water conduit 37 into the tank 1, the wash water passes through the feed water guide 33 connected to the feed water conduit 37, arrives at the upper projection arm 2 and is projected through the projection nozzles 8 provided
on both sides of the latter.
At the same time, the washing water is supplied to the various hollow pins 36 formed on the feed water guide 33 below the additional arm 34 and inclined at a fixed angle to support the additional arm 34 with a contact surface minimal during rotation of the additional arm 34, each comprising a hollow portion for the passage of the washing water. The washing water projected through the hollow pins by the static pressure of the washing water falls on a plurality of spiral blades fixed to the additional arm 34 to rotate the additional arm 34. The rotary additional arm and the plurality of blades 35 project the washing water onto the plates. In this case, since the height of the blade
decreases when approaching the center of the circumference
ce, i.e. the angle of inclination alpha is greater than
laughing at 90, during the rotation of the additional arm 34, the blades 35 can project the washing water onto all the plates installed 9. As a result, the efficiency of
washing dishes 9 can be improved significantly
cative. Another embodiment of the present invention is illustrated in Figures 9 and 10. The general device of this other embodiment of the present invention shown in Figures 9 and 10 is similar to the embodiment of the present invention shown in Figures 6 to 8, except for the static pressure dissipating means and the washing water spraying means like this
The static pressure dissipating means comprises intermediate connection pipes 40 and 41 formed between the feed water conduit 49 and the upper spray arm 2 and a plurality of projection holes 41a formed in the intermediate connection pipe for lead
the washing water to the additional circular arm 42.
The intermediate connection pipe comprises a connection pipe 40 screwed into the feed water pipe 49 on which the additional circular arm 42 is rotatably attached and a passage pipe 41 inserted in the connection pipe with a force adaptation for the passage of
wash water through it.
The projection means consists of a combination of blades 42a arranged in a spiral from the center of the circumference of the additional arm 4 having different lengths and curves to rotate the additional arm with the pressure of the effluent wash water which is exerted on him and spray the washing water on all
plates with centrifugal force.
The following explains with reference to FIGS. 9 and 10 the operation of the embodiment of the present
aforementioned invention.
With the feed wash water flowing through the feed water conduit to the spray arm 2 through a hole 41b of the passage conduit 41 and the guide conduit 43, part of the washing water is sprayed upwards at the same time as through inclined projection nozzles 41a by the static pressure of the washing water. The washing water sprayed by the static pressure falls on the blades 42a of the additional arm 42 to be sprayed on all the plates 9. The combination
blades 42a of different lengths and different curves
spiral annuities so that the washing water is sprayed both far and near, thereby preventing that water
wash is sprayed locally.
Figure 11 illustrates another embodiment of the present invention. The general device of this other embodiment of the present invention shown in FIG. 11 is analogous to the embodiments of the present invention illustrated in FIGS. 6 to 10 with the exception of the means for dissipating static pressure which is described below. after. The static pressure dissipating means includes
an intermediate connection pipe 53, annular projections
upper and lower res 53c, 53d formed on an outer side of the intermediate connection pipe 53 for inserting the additional arm 42 through a central hole 42b provided therein, a plurality of inclined projection holes 43a formed on the annular projection lower 53d and a guide portion 55 mounted in the intermediate pipe 53 and biased by a spring to guide the washing water
towards the upper projection arm 2.
Since the mode of operation of the embodiment of the present invention according to Figure 11 is analogous to that of the embodiment according to Figures 9
and 10, the explanation is not repeated.
As explained, the advantages of this
Since the additional washing device for a dishwashing machine according to the present invention comprises spiral blades formed on the additional arm having either a height different from each other, or a length and a curvature of the spiral different from each other to others, the additional washing device may have a greater area of projection of the washing water and, therefore, may improve
the efficiency of the dishwasher.
In addition, since the washing device
additional for dishwasher according to the present invention
tion can cause the static pressure of the washing water to flow through the supply water conduit 18 exiting to the outside, this affects only very little the pressure and the amount of the washing water. washing. Consequently, the additional washing device makes it possible to wash the plates simultaneously via the projection arm and the additional washing device and thus
the efficiency of the dishwasher can be improved.
The invention is not limited to the embodiments shown and described in detail and various modifications
can be made without departing from its scope.
1. Additional washing device for washing machine
crockery, characterized in that it comprises: a tank (1) forming an outer wall of a dishwasher; spray arms (2) formed in the tank (1) for spraying washing water onto dirty plates; a feed water conduit (37, 49) for feeding wash water to the spray arms (2) at a fixed pressure; static pressure dissipating means formed in the feed water conduit (37, 49) to cause
that the wash water flows out of the feed water pipe
tation (37, 49) under the action of the static pressure of the washing water; an additional circular arm (34, 42) rotated by the washing water flowing outside through the static pressure dissipating means and
a gushing means formed on the additional arm
circular shutter (34, 42) to make the washing water flow out on all the plates by exerting centrifugal forces
different on the wash water.
2. Additional washing device for washing machine
tableware according to claim 1, characterized in that the static pressure dissipation means comprises a plurality of hollow pins (33) penetrating into the conduit
feed water (37), each arranged with an inclination
naison at a certain angle to provide a contact area with the additional rotary arm (34) according to a
3. Additional washing device for washing machine
tableware according to claim 1, characterized in that the static pressure dissipating means comprises intermediate connection pipes (40, 41) formed between the feed water pipe (49) and the upper spray arm (2) and a plurality of projection holes (41a) formed in the intermediate connection pipe for directing the washing water
towards the additional circular arm (42).
4. Additional washing device for washing machine
tableware according to claim 3, characterized in that the intermediate connection pipe comprises a connection pipe (40) screwed into the feed water pipe (49) to which the additional circular arm (42) is rotatably attached and a passage pipe (41) inserted in the connection pipe with a force adaptation to pass the water
washing through it.
5. Additional washing device for washing machine
tableware according to claim 1, characterized in that the projection means comprises a plurality of blades (35) fixed on the lower side of the additional arm (34), each in the form of a spiral from the center towards the circumference of the additional arm ( 34) and having a
ference, to rotate the additional arm (34) with the pressure of the effluent wash water which is exerted on it and to project the wash water onto all the plates with the
6. Additional washing device for washing machine
tableware according to claim 1, characterized in that the projection means comprises a combination of blades (42a) arranged in a spiral from the center towards the circumference of the additional arm (4) and having a different length and curvature of the spiral for rotate the additional arm with the pressure of the effluent wash water exerted on it and spray the wash water on all
FR9412612A 1993-10-23 1994-10-21 Additional washing device for dishwasher. Expired - Fee Related FR2711503B1 (en)
FR2711503A1 true FR2711503A1 (en) 1995-05-05
FR2711503B1 FR2711503B1 (en) 1996-01-26
FR9412612A Expired - Fee Related FR2711503B1 (en) 1993-10-23 1994-10-21 Additional washing device for dishwasher.
CN105832267B (en) 2015-02-02 2019-11-12 Lg电子株式会社 Dish-washing machine
CH442647A (en) * 1965-06-21 1967-08-31 Rowenta Metallwarenfab Gmbh A method of washing dishware and dishwasher for carrying out the method
FR2361803A7 (en) * 1976-08-11 1978-03-10 Bosch Siemens Hausgeraete Dish washer water nozzle - consists of elbow piece with inside guide blade, threaded connector sleeve and radial ridge
EP0524102A1 (en) * 1991-07-16 1993-01-20 Esswein S.A. Washing machine with improved functioning
PATENT ABSTRACTS OF JAPAN vol. 17, no. 342 (C - 1076) 29 June 1993 (1993-06-29) *
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