EP0519875A1 - Circuit hydraulique pour alimenter une machine à laver en eau et en détergent - Google Patents

Circuit hydraulique pour alimenter une machine à laver en eau et en détergent Download PDF

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Publication number
EP0519875A1
EP0519875A1 EP92830245A EP92830245A EP0519875A1 EP 0519875 A1 EP0519875 A1 EP 0519875A1 EP 92830245 A EP92830245 A EP 92830245A EP 92830245 A EP92830245 A EP 92830245A EP 0519875 A1 EP0519875 A1 EP 0519875A1
Authority
EP
European Patent Office
Prior art keywords
hydraulic circuit
detersive
washing machine
duct
basin
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.)
Granted
Application number
EP92830245A
Other languages
German (de)
English (en)
Other versions
EP0519875B1 (fr
Inventor
Silvano C/O Candy S.P.A. Fumagalli
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.)
Candy SpA
Original Assignee
Candy SpA
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 Candy SpA filed Critical Candy SpA
Publication of EP0519875A1 publication Critical patent/EP0519875A1/fr
Application granted granted Critical
Publication of EP0519875B1 publication Critical patent/EP0519875B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • D06F39/086—Arrangements for avoiding detergent wastage in the discharge conduit

Definitions

  • the present invention relates to a hydraulic circuit for supplying water and a detersive or cleancing agent to a washing machine.
  • a very important problem of a washing machine is that related to the so-called “detersive mechanical loss” that is to the amount of detersive that, at the start of the washing cycle, because of the falling of a portion of the detersive into the region downstream of the washing machine basin, is not actually used or exploited.
  • the basin preloading system in which the basin and the portion underlying it are partially filled with water before supplying the detersive from its vessel to the basin, in order to prevent the detersive from being entrained by the first discharging water.
  • Another prior system provides for the use of either a ball or disc valve to be directly arranged in the discharging hole of the basin.
  • the pushing force on the valve closure is provided by the remaining water column which is held in a suitable vessel.
  • the main drawbacks of this system are a not perfect closure of the valve, mainly because of loose bodies such as buttons, threads and the like, and a difficult opening of the valve itself, in the case of a discharging or draining circuit partially obstructed.
  • the aim of the present invention is to overcome the above mentioned drawbacks, by providing a new hydraulic circuit for supplying water and a detersive or cleancing agent to a washing machine which allows to greatly reduce the detersive mechanical losses.
  • a main object of the present invention is to provide such a hydraulic circuit for washing machines which allows to efficiently exploit the available water amount in order to efficiently entrain the detersive from the vessel thereof to the washing machine basin without the need of constructionally modifying the main components of the washing machine.
  • Yet another object of the present invention is to provide such a hydraulic circuit which is so designed as to provide a water turbulence or flow suitable to prevent the fitting ducts from being obstructed.
  • Yet another object of the present invention is to provide such a hydraulic circuit for washing machines which is very reliable in operation and which, in addition,can easily be made starting from easily available elements and materials and which, moreover, is very competitive from a mere economic standpoint.
  • a hydraulic circuit for supplying water and a detersive to a washing machine characterized in that said hydraulic circuit comprises a first fitting duct extending between a manifold element of said washing machine, under the detersive loading vessel, and a collection region, arranged at the lower-most point of the hydraulic circuit, there being moreover provided a second fitting duct extending between said collection region and the bottom of the basin of the washing machine.
  • the hydraulic circuit for supplying water and detersive to a washing machine which has been generally indicated at the reference number 1, comprises a first fitting duct 2 which is connected to the bottom portion of a manifold element 3 arranged under the vessel 4 provided for receiving the detersive or cleansing agent.
  • the first duct 2 extends downwardly, to a collecting region which is arranged at the lowermost point of the hydraulic circuit.
  • This collection region comprises the body 5 of the draining or discharging pump which, advantageously, is of a self-cleaning type.
  • the mouth portion 6 would be arranged vertically, because of a narrowing of the liquid flow during the water loading step, the detersive would accumulate on the side walls which thing, on the contrary, does not occur if the fitting duct forms a loop arrangement at sail mouth portion so as to facilitate the outflow of the water on the walls.
  • the first fitting duct in order to prevent the detersive from accumulating, the first fitting duct, as is shown in figure 3,has an elliptical inner configuration, indicated at the reference number 10, which is directly obtained during the molding of the duct or, if desired, and as is shown in figure 4, the duct 1 has a smooth inside, and a coil or helical element 11 is added to it, so as to provide a turbulence effect in the duct effective to efficiently spread the detersive through the water, by breaking possible large size particles susceptible to be present in a commercially available detersive material.
  • the supplied water by flowing about the mentioned coil element, will dissolve the mentioned comparatively large size detersive particles or agglomerates.
  • the first loaded water will remove the detersive from the vessel 4 and will entrain it to the body 5, which constitutes the lowermost point of the hydraulic circuit, and then will cause the detersive to be raised to the basin owing to the pushing effect of the remaining water and because of the pressure column of the circuit.
  • the hydraulic circuit further comprises a draining syphon duct 30.
  • the distance of the syphon bent portion of the draining duct is a comparatively great one, since it does not allow the detersive solution to enter the draining duct if the water has not reached a set level in the basin, at which the solution will be sufficiently diluted.
  • a static type of hydraulic circuit is provided which is not affected by the swinging or vibrating movements of the washing machine basin.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP92830245A 1991-06-12 1992-05-22 Circuit hydraulique pour alimenter une machine à laver en eau et en détergent Expired - Lifetime EP0519875B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI910525U IT222459Z2 (it) 1991-06-12 1991-06-12 Circuito idraulico, per il carico di acqua e di detersivo in una macchina lavabiancheria
ITMI910525U 1991-06-12

Publications (2)

Publication Number Publication Date
EP0519875A1 true EP0519875A1 (fr) 1992-12-23
EP0519875B1 EP0519875B1 (fr) 1995-07-12

Family

ID=11358799

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92830245A Expired - Lifetime EP0519875B1 (fr) 1991-06-12 1992-05-22 Circuit hydraulique pour alimenter une machine à laver en eau et en détergent

Country Status (3)

Country Link
EP (1) EP0519875B1 (fr)
DE (1) DE69203400T2 (fr)
IT (1) IT222459Z2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2735635A2 (fr) * 2011-07-18 2014-05-28 LG Electronics Inc. Machine à laver et procédé d'alimentation en eau de lavage de machine à laver

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1204775A (fr) * 1958-08-04 1960-01-28 Laden Dispositif d'introduction des produits de traitement solides dans les machines à laver
FR2477591A1 (fr) * 1980-03-06 1981-09-11 Miele & Cie Lave-linge equipe d'un dispositif de distribution de produit de lavage

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1204775A (fr) * 1958-08-04 1960-01-28 Laden Dispositif d'introduction des produits de traitement solides dans les machines à laver
FR2477591A1 (fr) * 1980-03-06 1981-09-11 Miele & Cie Lave-linge equipe d'un dispositif de distribution de produit de lavage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2735635A2 (fr) * 2011-07-18 2014-05-28 LG Electronics Inc. Machine à laver et procédé d'alimentation en eau de lavage de machine à laver
EP2735635A4 (fr) * 2011-07-18 2015-04-15 Lg Electronics Inc Machine à laver et procédé d'alimentation en eau de lavage de machine à laver
US10145052B2 (en) 2011-07-18 2018-12-04 Lg Electronics Inc. Washing machine and method for supplying wash water of washing machine

Also Published As

Publication number Publication date
ITMI910525V0 (it) 1991-06-12
ITMI910525U1 (it) 1992-12-12
EP0519875B1 (fr) 1995-07-12
DE69203400T2 (de) 1995-12-21
DE69203400D1 (de) 1995-08-17
IT222459Z2 (it) 1995-04-20

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