EP0110448B1 - Machine à laver le linge ou autre munie d'un dispositif de sécurité ou alarme en cas de chute de la canne de vidange d'eau sur le sol - Google Patents

Machine à laver le linge ou autre munie d'un dispositif de sécurité ou alarme en cas de chute de la canne de vidange d'eau sur le sol Download PDF

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Publication number
EP0110448B1
EP0110448B1 EP83201529A EP83201529A EP0110448B1 EP 0110448 B1 EP0110448 B1 EP 0110448B1 EP 83201529 A EP83201529 A EP 83201529A EP 83201529 A EP83201529 A EP 83201529A EP 0110448 B1 EP0110448 B1 EP 0110448B1
Authority
EP
European Patent Office
Prior art keywords
pump
pressure
discharge
tube
washing machine
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.)
Expired
Application number
EP83201529A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0110448A1 (fr
Inventor
Michel Steers
Jean-Pierre Hazan
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.)
Whirlpool International BV
Original Assignee
Laboratoires dElectronique et de Physique Appliquee
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 Laboratoires dElectronique et de Physique Appliquee, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Laboratoires dElectronique et de Physique Appliquee
Publication of EP0110448A1 publication Critical patent/EP0110448A1/fr
Application granted granted Critical
Publication of EP0110448B1 publication Critical patent/EP0110448B1/fr
Expired 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
    • D06F39/081—Safety arrangements for preventing water damage
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/47—Responding to irregular working conditions, e.g. malfunctioning of pumps 
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/58—Indications or alarms to the control system or to the user
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/10—Power supply arrangements, e.g. stand-by circuits

Definitions

  • the present invention relates to a washing machine or the like the evacuation of water of which is effected by means of a drain pipe and which is provided with a safety and alarm device against flooding in case of said rod falling on the ground.
  • a washing machine is described, the drainage circuit of which comprises, between its end opening into the waste water pipe and the bottom of the washing tank and downstream of the drain pump, an inverted U-shaped tube, the top of which is at a level at least equal to that of the maximum level provided in the tank, the ascending branch being connected to the drain pump and the descending branch connected to the wastewater pipe.
  • the top of the top is vented using a tube connected to the U-shaped tube and opens into the top of the washing tub above the maximum level reached by the water.
  • the device is designed so as to avoid any siphoning both of the water from the tank to the waste water pipe and from the latter to the washing tank.
  • the invention relates precisely to washing machines for which the evacuation of water is effected by means of a hose which is not fixed in a sealed manner to the sewage pipe and more particularly those of which the outlet evacuation hose is mobile and is called "drain rod" because of its butt end.
  • This drain rod is generally made of flexible material to be adapted on the rim of a sink, a washbasin or a bathtub, its height being able to be included in a fairly wide range, for example 0.6 to 1 m above the base of the machine.
  • the object of the invention is to guard against the drawbacks due to the mobility of this drain rod and to the fact that this rod can fall to the ground and that it may result in flooding.
  • the object of the invention is to guard against this danger of flooding when the pump is stopped (for example washing phase) but also when this pump is running (for example draining phase).
  • the invention provides a washing machine with washing tub provided at its lower part with an orifice followed by a drain pump with connected outlet, as according to US-AN patent 3346000, to the ascending branch of an inverted U-shaped pipe whose top, located at a height at least equal to that of the maximum water level in the tank, is vented and whose descending branch brings the drained water towards the sewer line, remarkable in that the downward branch of the inverted U is connected to said line by means of a removable drain pipe, a pressure detector being connected at the connection point of said descending branch and of the drain rod, and in that it comprises alarm and stop or start control means of the drain pump supplied electrically by a circuit including associated control means pressure sensor.
  • the invention is based on the fact that the value of the pressure in the waste water evacuation pipe at the connection of the descending branch of the U and the drain pipe is a function of the position of the drain pipe, either in the air, either on the ground, and also a function of the on or off state of the drain pump and that the values of this pressure can be classified in relation to each other according to the circumstances: if P o and P 1 are the values of this pressure, pump stopped, drain stick respectively on the ground and in the air, and P z , P 3 the values of this pressure, pump running, drain stick respectively on land and in the air, all of these values are such that:
  • control means associated with the pressure detector and inserted into the electrical supply circuits of the drain pump and alarm means have several independent degrees of sensitivity and in conjunction with the different pressure values indicated above.
  • the washing machine is not shown completely.
  • the washing tub 11 provided at its base with a drain orifice 12 to which is connected the pipe 13 which opens into the drain pump 14.
  • the water evacuation pipe comprises the inverted U-shaped tube 15, the top of which is 10 and the ascending and descending branches respectively 16 and 17.
  • the descending branch is connected to the drain rod 18 comprising, in the normal operating position, an ascending part 19 and a butt 20, which butt is for example suitable for the descent of wastewater 22.
  • the U-shaped tube is connected in the vicinity of the top 10 in the open air or more precisely in the washing tank above the maximum water level in this tank using the hose 23.
  • the washing machine includes a pressure sensor in the drain pipe at the level of the junction of the downward part of the inverted U and the drain rod.
  • This detector comprises for example a tube (24) initially filled with air connected to the pipeline at point A substantially at the location of said junction.
  • the tube ends in a cylindrical manometric chamber with two bodies respectively 25 and 27 separated by the movable membrane 26.
  • the displacement of 26 in the chamber which takes place perpendicular to itself depends on the level of water reached in the tube 24, which is linked to the pressure in the flow pipe at point A, which itself depends on the position of the drain rod, adapted to 22 or on the ground, and also of the stop or running state of the drain pump, this level being higher the higher the pressure in A in the pipeline.
  • the water levels in the tube 24 and the water pressure at point A are respectively h o h, h 2 h 3 and P o P, P 2 P 3 satisfying the inequalities :
  • Fig. 2 shows by way of example according to an embodiment of the invention, how the latter takes advantage of this pressure gradation to design and organize means which, in the event of the drain rod falling to the ground, emit a alarm and practically simultaneously cause the drain pump to stop if it is running, these means being controlled using means associated with the pressure detector at point A in FIG. 1.
  • the control is effected by the displacement of this membrane 26.
  • the membrane 26 is provided on the side of the body 27 of the part 31. This part is fixed in a non-deformable manner to 26.
  • lever arms 34 and 35 which are connected elastically to the wall 36 by means of springs respectively 37 and 38 acting in compression and are movable around the axes respectively 39 and 40 perpendicular to the plane of the sheet.
  • These lever arms are electrically conductive on their part extending from their respective axis to points K and L respectively. The stroke of the rotational movement of these partly conductive lever arms extends for each of them, during of the movement of the membrane 26, between the pairs of studs 41,42 and 43, 44 respectively.
  • the studs 42 and 44 are each connected to the ground potential respectively through the drain pump 45 and an apparatus 46 emitting an alarm ( sound or light), while the studs 41 and 43 are isolated or grounded.
  • the axes 39 and 40 are both brought to the potential of the HV supply voltage of said pump and alarm.
  • the height positions of the studs 41 and 42 in the chamber body 27 are determined so that when the pressure in the evacuation pipe at point A corresponding to P 2 and P 3 and therefore for the corresponding positions of the membrane 26, the lever 34 is in contact for its conductive part with the pads 41 and 42 respectively, which corresponds respectively to the stop or the running of the drain pump for a position of the drain rod which, let us recall, is respectively on the ground or in the air.
  • the positions of the pads 44 and 43 are determined in relation to those of the pad 41 so that when the pressure in the pipeline corresponds respectively to the pump stopped, the rod on land (P o ) or in the air (P i ), and for positions corresponding to the diaphragm 26, the lever arm 35 is in contact respectively with 44 or 43, the contact between 41 and 34 being ensured, which causes the activation or not of the alarm 46, depending on whether the pressure is P o or P ,.
  • the invention provides for priming the drain rod.
  • the pump is supplied by a circuit comprising the contactor 47 with two positions 48 and 49 respectively, this contactor being in position 48.
  • This contactor is linked to the time relay 50 by means of the link 51, said relay in series with the resistor 53 and the diode 54 being placed in parallel on the supply of the pump.
  • This relay whose action constant is of the order of a few seconds, depending on the capacity 52 and the resistance 53, switches the contactor from position 48 to 49.
  • the part of the system described first can then operate as already explained, "note” the position of the drain rod on the ground or in the air and possibly take the appropriate preventive measures.
  • the pressure detector at point A may have a deformable membrane, the deformation of said membrane then controlling the electrical circuits supplying the pump and the alarm transmitter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
EP83201529A 1982-10-29 1983-10-25 Machine à laver le linge ou autre munie d'un dispositif de sécurité ou alarme en cas de chute de la canne de vidange d'eau sur le sol Expired EP0110448B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8218257A FR2535354A1 (fr) 1982-10-29 1982-10-29 Machine a laver le linge ou autre munie d'un dispositif de securite ou alarme en cas de chute de la canne de vidange d'eau sur le sol
FR8218257 1982-10-29

Publications (2)

Publication Number Publication Date
EP0110448A1 EP0110448A1 (fr) 1984-06-13
EP0110448B1 true EP0110448B1 (fr) 1986-01-29

Family

ID=9278786

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83201529A Expired EP0110448B1 (fr) 1982-10-29 1983-10-25 Machine à laver le linge ou autre munie d'un dispositif de sécurité ou alarme en cas de chute de la canne de vidange d'eau sur le sol

Country Status (4)

Country Link
EP (1) EP0110448B1 (ja)
JP (1) JPS5995098A (ja)
DE (1) DE3362037D1 (ja)
FR (1) FR2535354A1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19831555B4 (de) * 1998-07-14 2005-07-28 BSH Bosch und Siemens Hausgeräte GmbH Flüssigkeitsführendes Haushaltgerät mit Überwachung des Ablaufschlauchs
KR100751763B1 (ko) * 2005-12-16 2007-08-24 주식회사 대우일렉트로닉스 드럼세탁기의 배수연결관 구조
DE102010040444B4 (de) * 2010-09-08 2017-08-10 BSH Hausgeräte GmbH Wasserführendes Haushaltsgerät, insbesondere Geschirrspülmaschine
TR201717071T1 (tr) * 2015-07-06 2018-07-23 Arcelik As Güvenli Çalıştırılan Bir Bulaşık Makinası
CN108553063B (zh) * 2018-06-06 2024-05-17 广东洁诺生活电器有限公司 一种洗碗机排水检测系统及洗碗机
CN114687156B (zh) * 2020-12-30 2023-11-03 无锡小天鹅电器有限公司 一种衣物处理设备及其控制方法
CN113397323B (zh) * 2021-06-22 2022-06-21 上海工程技术大学 一种方便维修的集成智能厨房电器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3091111A (en) * 1962-08-20 1963-05-28 Paul B Cruse Washing machine overflow control unit
US3346000A (en) * 1963-09-26 1967-10-10 Gen Electric Anti-siphon device for an automatic washer
DE2226698C3 (de) * 1972-05-25 1980-10-30 Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart Wasch- oder Geschirrspülmaschine
US4069837A (en) * 1976-03-23 1978-01-24 Jirasek James D Washing machine overflow control means

Also Published As

Publication number Publication date
DE3362037D1 (en) 1986-03-13
EP0110448A1 (fr) 1984-06-13
FR2535354B1 (ja) 1985-02-01
JPS5995098A (ja) 1984-05-31
FR2535354A1 (fr) 1984-05-04

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