GB2192126A - Dishwasher - Google Patents

Dishwasher Download PDF

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Publication number
GB2192126A
GB2192126A GB08616129A GB8616129A GB2192126A GB 2192126 A GB2192126 A GB 2192126A GB 08616129 A GB08616129 A GB 08616129A GB 8616129 A GB8616129 A GB 8616129A GB 2192126 A GB2192126 A GB 2192126A
Authority
GB
United Kingdom
Prior art keywords
utensils
water
dishwasher
rack
spray nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB08616129A
Other versions
GB8616129D0 (en
Inventor
Hsiung Tseng Cheng
Liu Ho-Mei
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HO MEI LIU
Original Assignee
HO MEI LIU
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HO MEI LIU filed Critical HO MEI LIU
Priority to GB08616129A priority Critical patent/GB2192126A/en
Publication of GB8616129D0 publication Critical patent/GB8616129D0/en
Publication of GB2192126A publication Critical patent/GB2192126A/en
Withdrawn legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4236Arrangements to sterilize or disinfect dishes or washing liquids
    • A47L15/4242Arrangements to sterilize or disinfect dishes or washing liquids by using ultraviolet generators
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/26Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by other means
    • A47L15/30Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by other means by rotating only
    • A47L15/32Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by other means by rotating only rotated by means of spraying water
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/48Drying arrangements

Abstract

A dishwasher (10) comprises a washing chamber (20) including a rotatable rack (23, 24) for receiving utensils to be washed, nozzles (26A, 26B) for spraying water at the utensils in the rack, so as to rotate the rack and wash the utensils, nozzles (25A, 25B) for spraying water onto the utensils, and a blower (38) for blowing air at ambient temperature onto the washed utensils to dry them. Wash water may be heated in unit 31 by a gas heater and stored in reservoir 32, and its temperature may be regulated by a thermostat. Pump 37 may be used to pump detergent from reservoir 15 into the wash water pumped into the wash chamber by pump 36. The operation of the pumps and blower may be automatically controlled by controller 39. <IMAGE>

Description

SPECIFICATION Dishwasher This invention relates to a dishwasher for simultaneouslywashing various eating and cooking utensils, dishes, cutlery, pots and pans, and particularly to a dishwasherforwashing numerous eating utensils rapidly and effectively and for drying them rapidly to a normal temperature after washing.

There is at present a preferred type of known dishwasherforsimultaneouslywashing numerous eating utensils. This type of known dishwasher includes a rotatable rack which is provided with a utensil-receiving portion at an upper end thereof and a vane wheel at a lower portion thereof. Afirstwater spray nozzle is directed at the vane wheel so asto rotate the rack, and a second water spray nozzle is disposed above the rackforsprayingwatertowash the eating utensils on the rack. A conduit connects the first nozzle and the second nozzle for delivering the water to be sprayed, and a two-way valve is provided in the conduit for controlling the quantity of waterfed to the first nozzle and to the second nozzle.

Since the waterto the first nozzle and the second nozzle is supplied from the same conduit via the two-way valve, if the water supplied to the second nozzle is less than that supplied to the first nozzle the washing effect is poor, whereas if the water su ppl ied to the first nozzle is less than that supplied to the second nozzle the speed of rotation ofthe rack is slow, which also lowers the quality ofthe wash. After the utensils have been cleaned, common known dishwashers dry the utensils by a heating arrangement so that hot air increases the temperature ofthe dishes, with the result that the dishes which have just been cleaned cannot be used immediately.

An object of the present invention is to provide a dishwasherforwashing tableware and pots and pans rapidly and effectively, and for drying the utensils to a normal temperature, so that afterthey have been cleaned they can be used immediately.

According to the invention, there is provided a dishwasherforwashing utensils comprising a washing chamber; a rack mounted rotatablywithin the washing chamberfor receiving the utensils; a water feeding unit; first water spraying means, connected to the water feeding unit, including a first spray nozzle level with the rack for spraying water directly on the utensils so as to rotate the rack and wash the utensils simultaneously; second water spraying means connected to the water feeding unit, including a second spray nozzle for spraying water directly on the utensils to wash them; and a drying unitincludinga blowerforblowing air on the utensils at a normal temperature to dry the utensils after they have been cleaned.

An embodiment ofthe invention will now be described, by way of example, with reference to the accompanying drawings, wherein: Figure 7 is a schematic cross-sectional view of a dishwasher according to the invention; Figure2 is a schematic side elevation of the dishwasher of Figure 1; Figure 3 is a schematic view showing the operation of a first water spraying unit with respect to a circular rotary plate in a washing chamber ofthe dishwasher of Figure 1; Figure 4 is a perspective view showing a basket for receiving utensils in the dishwasher of Figure 1; and Figure 5 is a perspective view showing an inner basket adapted to nest in the basket of Figure 4.

Referring to Figure 1, the interior of a dishwasher 10 according to the invention is divided by a vertical partition 11 and a horizontal partition 12 into a detergent reservoir 15 below the horizontal partition 12, a washing chamber 20 above the horizontal partition 12, and a mechanical chamber 30.

Within the mechanical chamber 30 there is a feed water heating unit31 comprising a gas heater (not shown) and an exhaust outlet 35 communicating with the exterior of the dishwasher 10. A hotwater reservoir 32 communicates with the heating unit 31, via a first conduit Pi ,for receiving hot water from the unit. Athermostat for measuring and maintaining the water temperature in the heating unit 31 at a desired temperature range of around 80"C-90"C includes a temperature sensor 33 disposed within the water reservoir 32 and a hot water controller34 disposed on the first conduit P1 between the water reservoir 32 and the heating unit 31.The controller 35 is responsiveto the temperature sensor33, when the temperature falls below 70 C, to output a signal to an ignition system (not shown) in the gas heater of the heating unit. Afirst pump 36 is disposed between the water reservoir 32 and the washing chamber 20 for pumping water from the water reservoir 32 to three water spraying units in the washing chamber 30. A second pump 37 is disposed between the detergent reservoir 15 and a second conduit P2 which is disposed between the water reservoir 32 and the first pump 36. The pump 37 pumps detergent from the detergent reservoir 15 to become entrained in the water in the conduit P2.A blower 38 can be activated to blow air into the washing chamber 20 at a normal (e.g.room) temperature through an orifice 41 in the vertical partition 1 1.An automatic electric controller 39 includes a timing device (not shown) for remote control of the first pump 36, the second pump 37 and the blower 38. A check valve 40 is disposed between the first pump 36 and the two water spraying units for preventing the water from flowing in the reverse direction (i.e. away from the washing chamber).

Within the washing chamber 20, there is a vertical support rod 22 having a hub 221 at its upper end, the rod being fixed at its lower end to the centre ofthe transverse partition 12. A circular rotary plate 23 having a grid structure is centrally disposed rotatably on the upper end of the support rod 22 above the hub 221. A basket 24 of net structure is disposed detachably on the circular rotary plate 23 for receiving eating utensils (not shown). Afirst water spraying unit includes two first spray nozzles 26A and 26B, the nozzle 26A being above the nozzle 26B. Each of the nozzles is directed towards the basket 24 in a direction inclined relative to the centre of the circular rotary plate 23, the upper nozzle 26A being inclinedatagreateranglethanthenozzle26B.

Both nozzles are so directed as to rotate the basket 24, and hence the circular rotary plate 23, in a clockwise direction as shown in Figure 3. A second water spraying unit includes two second spray nozzles 25Aand 258 abovethe basket 24, both of which are inclined at an angle of around fifteen degrees relative to a vertical plane to spray water over a sector, for example a semicircular region, of the plate 23. Athird water spraying unit includes two third spray nozzles 27A and 278, each of which is disposed belowthe plate 23, opposite the second injection nozzles 25A and 25B respectively.An orifice 41 is provided, level with the basket 24 and adjacent thefirstinjection nozzles 26A and 26B, for directly blowing air at a normal temperature on to eating utensils received within the basket 24 in a direction inclined relative to the centre of the circular rotary plate 23 and towards the opposite side of the centre to the nozzles 26A and 26B, so as to rotate the basket 24, and hence the rotary plate 23, in a counterclockwise direction. An exhaust opening 29 is provided in the vertical partition 11 and is connected to a second exhaust outlet 28. A drain opening 16 with a filter 18 is provided in the horizontal partition 12 and is connected to a drain pipe 17.

Referring to Figure 2, the outside wall of the washing chamber 20 is provided with an opening for receiving the basket and the eating utensils and a hinged door 13 which is mounted for sealably covering the opening. The door is provided with a brake shoe 131 at its lower edge for making contact with the underside of the plate 23 when the door is pivoted to a horizontal position, resulting in stopping of the rotation of the plate 23so asto provide a safety function. A microswitch 14, connected to the automatic electric controller 39 (Figure 1), causes the controllerto switch off when the door 13 is opened, so asto stop the action ofthefirst pump 36, the second pump 37 and the blower38,thereby providing afurthersafetyfunction.

Referring to Figure 4, one suitable form forthe basket 24 is shown. The basket is divided bythree grid partitions 51 into four receiving regions 52. It should be understood thatthe form may be varied depending on the utensils to be washed. Depending on the form of the basket 24, several inner baskets of suitable shapes are provided. For example, an inner basket 55 shaped in the form of a quarter of a circle as shown in Figure 5 is provided with a plurality of radial strips 56 for inserting respective eating utensils therebetween. The shape of the inner basket 55 may be also modified as required.

With the arrangement of the three water spraying units, momentum is produced in operation, so that all ofthe surfaces of the dirty utensils are sprayed completely so thatthey become clean. As the blower 38 and the first nozzles 26a and 26B rotate the basket 24 and the rotary plate 23 in opposite directions, the effect of washing and drying the cleaned eating utensils is superior. Furthermore, since the blower 38 blows air at a normal temperature (e.g. at room temperature) the cleaned utensils can be used immediately after washing and drying.

In orderto sterilisethe eating utensils, an ultraviolet ray device (not shown) is disposed within the washing chamber 20.

In use, when the dirty utensils have been placed in the basket 24 on the rotary plate 23, the door 13 must be closed. The automatic electric controller 39 is then switched on, so that the second pump 37 pumps detergentfrom the detergent reservoir 1 5 for entrainment in the water in the pipe P2.

Simultaneously the first pump 36 pumps the water in the pipe P2 to the nozzles 25A, 258, 26A, 26B, 27A and 278 which spray the mixture of hot water and detergent to clean the utensils and to rotate the basket 24 in a clockwise direction. After aboutten seconds, the timing of which is controlled bya timing device in the controller 39, the second pump 37 no longer pumps detergent, so the nozzles spray only hotwaterto wash the utensils. After aboutthirty seconds, also controlled by the timing device, pumping ofthewater bythefirst pump 36 is arrested, so that no more water is sprayed on the utensils.The blower38 then starts to blow air on the utensils for decelerating the rotation of the circular plate 23, until the plate starts to rotate in a counterclockwise direction. The vapourwithin the washing chamber 20 is released through the exhaust outlet 28 and the water from the eating utensils is drained offthroughthe drain opening 16. After around thirty seconds, also controlled bythetiming device, operation of the blower 38 is terminated.

During the blowing of air on the dishes, the ultraviolet ray device operates to sterilise the dishes.

Finally,the user may open the door 13, which causes rotation of the plate 23 to be arrested by the brake shoe 131. The user may then take the eating utensils out of the dishwasher.

The dishwasher of this invention washes and dries dishes quickly and effectively, and so is convenient for use in the kitchen.

Claims (14)

1. A dishwasherforwashing utensils comprising awashing chamber; a rack mounted rotatablywithin the washing chamber for receiving the utensils; a waterfeeding unit, first water spraying means, connected to the water feeding unit, including a first spray nozzle level with the rack for spraying water directly on the utensils so as to rotate the rack and wash the utensils simultaneously; second water spraying means connected to the water feeding unit, including a second spray nozzleforspraying water directly on the utensils to wash them; and a drying unit including a blower for blowing air on the utensils ata normal temperature to dry the utensils after they have been cleaned.
2. A dishwasher as claimed in claim 1 ,further comprising a detergent reservoir communicating with the first water spraying means and the second water spraying means so asto entrain detergent from the reservoir in the water to be sprayed.
3. A dishwasher as claimed in claim 1 or claim 2, further comprising a basket disposed detachably on the rackfor receiving the utensils.
4. A dishwasher as claimed in any preceding claim, wherein the rack comprises support means fixed within the washing chamber and having a hub at its upper end, and a circular plate mounted rotatably on the support means by the hub.
5. A dishwasher as claimed in claim 4, wherein the first spray nozzle sprays water on the utensils in a direction inclined relative to the centre of the circular plate and to one side of the centre of the plate for rotating the plate.
6. A dishwasher as claimed in claim 4 or claim 5, wherein the second spray nozzle is disposed above the rack and sprays water over a sector of the rotary circular plate.
7. Adishwasher as claimed in claim 4, claim 5 or claim 6,furthercomprisingthirdwaterspraying means including a third spray nozzle connected to thewaterfeeding unit and disposed belowthe circular plate and opposite the second spray nozzle.
8. A dishwasher as claimed in claim 5, wherein the blower outlet of the drying unit is disposed adjacentthe first spray nozzle and blows air on the utensils in a direction inclined relative to the centre ofthe circular plate and along the side of the centre opposite to the direction of spraying of the first spray nozzle, for drying the utensils and for rotating the circular plate in a direction opposite to that caused by the first spray nozzle.
9. A dishwasher as claimed in any preceding claim,furthercomprising athermostatfor controlling the temperature of the water in the water feeding unit.
10. A dishwasher as claimed in any preceding claim, further comprising an ultraviolet ray device disposed within the washing chamber for sterilising the cleaned utensils.
11. A dishwasher as claimed in any preceding claim, wherein the water feeding unit comprises piping for guiding water to the first and second spray nozzles; a pump for pumping the water th rough the piping; and a check valve disposed between the pump and the water spray nozzles for preventing water carried by the piping from flowing in a reverse direction.
12. A dishwasher as claimed in claim 11 ,further comprising an automatic electric control unit for controlling the pump and the blower.
13. A dishwasher as claimed in any preceding claim, wherein the washing chamber includes an opening adjacentthe rack and a hinged doorfor sealably covering the opening, the door having meansforarresting rotation ofthe rack when the door is opened.
14. A dishwasher substantially as hereinbefore described with reference to the accompanying drawings.
GB08616129A 1986-07-02 1986-07-02 Dishwasher Withdrawn GB2192126A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08616129A GB2192126A (en) 1986-07-02 1986-07-02 Dishwasher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08616129A GB2192126A (en) 1986-07-02 1986-07-02 Dishwasher

Publications (2)

Publication Number Publication Date
GB8616129D0 GB8616129D0 (en) 1986-08-06
GB2192126A true GB2192126A (en) 1988-01-06

Family

ID=10600434

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08616129A Withdrawn GB2192126A (en) 1986-07-02 1986-07-02 Dishwasher

Country Status (1)

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GB (1) GB2192126A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2232877A (en) * 1989-06-07 1991-01-02 Joseph Charles Morris Parts cleaning apparatus
DE19737510A1 (en) * 1997-06-07 1998-12-10 Siegfried Milke Handling system for cleaning and drying and stacking of multi-way plastic beakers
WO2007021137A1 (en) 2005-08-19 2007-02-22 Lg Electronics Inc. Dish washer with uv sterilization device therein
WO2007043795A1 (en) * 2005-10-13 2007-04-19 Lg Electronics Inc. Washing machine having uv generator
WO2008040316A1 (en) * 2006-09-26 2008-04-10 Lothar Saiger Method and appliance for disinfecting household items by means of ultraviolet rays
CN101267760B (en) * 2005-08-19 2012-05-23 Lg电子株式会社 Dish washer with uv sterilization device therein and method for controlling the dish washer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110495830A (en) * 2019-09-17 2019-11-26 佛山市顺德区美的洗涤电器制造有限公司 The control method of dish-washing machine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB329352A (en) * 1928-11-16 1930-05-16 Oswald Rupert Coverley Improvements in or relating to dish and like washing machines
GB342149A (en) * 1929-02-19 1931-01-29 Curt Selmer Dish washing machine
GB900165A (en) * 1958-11-21 1962-07-04 Bauknecht G M B H Fa G Dish washer
GB918412A (en) * 1958-02-21 1963-02-13 Electrolux Ab Improvements in dish washing machines
US3739145A (en) * 1971-11-08 1973-06-12 Fedders Corp Dishwasher water air heater
US3908681A (en) * 1973-11-09 1975-09-30 Gen Electric Forced air circulation system for a dishwasher
US4247158A (en) * 1979-07-02 1981-01-27 The Maytag Company Dishwasher airflow drying system
GB2155313A (en) * 1984-03-08 1985-09-25 Donald E Roberts Apparatus for washing cutlery

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB329352A (en) * 1928-11-16 1930-05-16 Oswald Rupert Coverley Improvements in or relating to dish and like washing machines
GB342149A (en) * 1929-02-19 1931-01-29 Curt Selmer Dish washing machine
GB918412A (en) * 1958-02-21 1963-02-13 Electrolux Ab Improvements in dish washing machines
GB900165A (en) * 1958-11-21 1962-07-04 Bauknecht G M B H Fa G Dish washer
US3739145A (en) * 1971-11-08 1973-06-12 Fedders Corp Dishwasher water air heater
US3908681A (en) * 1973-11-09 1975-09-30 Gen Electric Forced air circulation system for a dishwasher
US4247158A (en) * 1979-07-02 1981-01-27 The Maytag Company Dishwasher airflow drying system
GB2155313A (en) * 1984-03-08 1985-09-25 Donald E Roberts Apparatus for washing cutlery

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2232877A (en) * 1989-06-07 1991-01-02 Joseph Charles Morris Parts cleaning apparatus
DE19737510A1 (en) * 1997-06-07 1998-12-10 Siegfried Milke Handling system for cleaning and drying and stacking of multi-way plastic beakers
DE19737510C2 (en) * 1997-06-07 1999-04-29 Siegfried Milke Dishwashing system for cleaning, drying and stacking reusable plastic cups
WO2007021137A1 (en) 2005-08-19 2007-02-22 Lg Electronics Inc. Dish washer with uv sterilization device therein
CN101267760B (en) * 2005-08-19 2012-05-23 Lg电子株式会社 Dish washer with uv sterilization device therein and method for controlling the dish washer
EP1915086A1 (en) * 2005-08-19 2008-04-30 LG Electronics Inc. Dish washer with uv sterilization device therein
AU2006280595B2 (en) * 2005-08-19 2010-07-08 Lg Electronics Inc. Dish washer with UV sterilization device therein
EP1915086A4 (en) * 2005-08-19 2012-02-08 Lg Electronics Inc Dish washer with uv sterilization device therein
US8181659B2 (en) 2005-10-13 2012-05-22 Lg Electronics Inc. Washing machine having UV generator
WO2007043795A1 (en) * 2005-10-13 2007-04-19 Lg Electronics Inc. Washing machine having uv generator
WO2008040316A1 (en) * 2006-09-26 2008-04-10 Lothar Saiger Method and appliance for disinfecting household items by means of ultraviolet rays

Also Published As

Publication number Publication date
GB8616129D0 (en) 1986-08-06

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