EP2580479A1 - Haushaltsgerät mit einer flüssigkeitspumpe - Google Patents
Haushaltsgerät mit einer flüssigkeitspumpeInfo
- Publication number
- EP2580479A1 EP2580479A1 EP11723421.1A EP11723421A EP2580479A1 EP 2580479 A1 EP2580479 A1 EP 2580479A1 EP 11723421 A EP11723421 A EP 11723421A EP 2580479 A1 EP2580479 A1 EP 2580479A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- level
- main chamber
- household appliance
- chamber
- pump
- 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
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 46
- 230000004913 activation Effects 0.000 claims abstract description 14
- 238000007599 discharging Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 238000001035 drying Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 230000003213 activating effect Effects 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 3
- 230000009849 deactivation Effects 0.000 claims description 2
- 239000003570 air Substances 0.000 description 35
- 239000012080 ambient air Substances 0.000 description 3
- 239000003599 detergent Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 206010039509 Scab Diseases 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
- F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
- F04D15/0218—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
- A47L15/4225—Arrangements or adaption of recirculation or discharge 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
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/24—Condensing arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/02—Pumping installations or systems having reservoirs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
- F04F1/06—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
- A47L2401/09—Water level
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/05—Drain or recirculation pump, e.g. regulation of the pump rotational speed or flow direction
-
- 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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/58—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to condensation, e.g. condensate water level
-
- 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
- D06F2105/16—Air properties
- D06F2105/24—Flow or velocity
-
- 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
- D06F2105/36—Condensing arrangements, e.g. control of water injection therefor
-
- 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
- D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air
-
- 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
- D06F58/00—Domestic laundry dryers
- D06F58/32—Control of operations performed in domestic laundry dryers
- D06F58/34—Control of operations performed in domestic laundry dryers characterised by the purpose or target of the control
Definitions
- the invention relates to a household appliance, in particular laundry drying apparatus, with a liquid pump, in particular condensate water pump.
- condensate water pumps In tumble driers condensate water pumps are used, which pump evaporated from the laundry to be dried and then condensed in a condensate condensate water in a condensate tank.
- the condensate tank can pump the condensate water to a drain or use it to rinse components of the tumble dryer.
- the condensate water typically has foreign matter such as lint, hair or detergent residue, etc., which can clog or set the condensate water pump.
- hair can attach to a wave exposed to the condensate water and hinder rotation of the shaft or even prevent. Detergent residues can lead to crusts, which also hinder a gear of the pump.
- the pre-chamber has a filling opening for filling in liquid
- the pre-chamber and the main chamber via a passage opening, which is lower than the filling opening, are connected to each other;
- the main chamber has an outlet opening for discharging the liquid and a pressure opening connected to an air pump; arranged in or with the main chamber, a level-controlled valve element which is adapted and arranged to close the passage opening with a reaching a maximum level in the main chamber;
- At or in the antechamber at least one level sensor is arranged, by means of which an attainment of an activation level of the liquid in the antechamber can be sensed;
- liquid pump is adapted to activate the air pump for a certain period of time upon reaching the activation level.
- the erfindugnssiee use of this fluid pump has the advantage that it works without the fluid exposed rotating parts and consequently can not or only very difficult to set.
- a size of the openings can be set in a wide range, so that even blockages can be avoided.
- the household appliance or its liquid pump can be operated for example in the following manner:
- a level (also called liquid level) in the main chamber is below its maximum level (initial state).
- the liquid to be conveyed is directed through the filling opening into the prechamber, e.g. during operation of a condenser of a clothes dryer. Since the maximum level of the main chamber has not yet been reached, the passage opening is opened, and the liquid filled in the prechamber substantially drains into the main chamber. Thus, no rising level occurs in the prechamber, but some residual liquid may remain in the prechamber. As a result, in the main chamber, the level rises, and that until the maximum level of the main chamber is reached.
- the level-controlled valve element closes the passage opening, and liquid flowing through the feed opening into the pre-chamber is now collected in the prechamber. This in turn increases the level of the liquid in the antechamber. If the fill level in the prechamber rises to a predetermined level, the "activation level", this is achieved by means of the fill level sensor arranged on or in the prechamber. sors detected. The level sensor outputs a corresponding signal, whereupon the air pump is activated. The air pump pumps air through the pressure port into the main chamber, so that a pressure in the main chamber increases.
- the liquid is displaced through the outlet opening and can be conveyed to a drain or a rinsing container, for example. Consequently, the level in the main chamber drops again.
- the level-controlled valve element remains for a while in its closed position or sealing position, for example because it is kept closed by the overpressure generated by the air pump.
- the air pump remains activated for a certain period of time.
- the overpressure in the main chamber can be lowered, in particular balanced with the ambient pressure.
- the level-controlled valve element returns to its initial position, and the passage opening is opened again.
- the liquid collected in the pre-chamber flows into the main chamber, and thereafter the liquid flowing through the filling port, whereupon the above-described operation can be performed again.
- the level-controlled valve element is a float.
- the float allows it to be moved very simply with the fill level and pressed onto the passage opening once the maximum fill level has been reached, whereby the float closes off the passage opening. With falling level, the float expresses itself by its own weight down from the passage opening away.
- a weight or a mass of the float can be adjusted in a simple manner so that the weight is less than an opposing (in particular upward) acting contact pressure due to the overpressure in the main chamber during the activation of the liquid pump.
- the float can be a hollow body in order to achieve a high contact pressure on the passage opening.
- the level-controlled valve element in particular float, is spherical. This can be dispensed with a complex and error-prone management. It is also a preferred embodiment that the passage opening on its side facing the main chamber has a sealing seat for the level-controlled valve element, in particular float. This improves a tightness and allows a precise closure of the passage opening.
- the liquid pump is not limited to use of a float.
- an actively actuated, e.g. electromotive moving, valve are used, the closing of the passage opening is triggered, for example, by a signal of a level sensor, which detects the maximum level.
- the valve may also be timed or for a signal, e.g. of a level sensor on reaching a minimum level, back to open the passage opening.
- the determined period of time for activating the air pump is a preset (time-activated) period of time. This preset time period can be determined, for example, by means of a clock or another time-controlling means.
- the time period is preferably set so that there is a significant, in particular substantially complete, emptying of the main chamber.
- the time duration can be determined experimentally, for example. This embodiment is particularly robust and inexpensive to implement.
- the determined period for activating the air pump is a period of time which elapses until the level in the main chamber reaches a predetermined minimum level.
- the main chamber may for example be equipped with a level sensor, which detects the minimum level and then outputs a corresponding signal, on the basis of which, inter alia, the air pump can be deactivated.
- the air pump can be configured such that in a deactivated state (deactivated air pump) it allows air to pass between its pressure side and its suction side.
- This will be an open air duct between the Pressure opening and the ambient air generated by which a pressure in the main chamber can be drained or compensated.
- the liquid pump is set up to open a pressure equalization valve in connection with a deactivation of the air pump.
- a pressure equalization in the main chamber and following an opening of the passage opening can be carried out particularly quickly. This results in the advantage that the pre-chamber can be kept comparatively small, without a risk of overflow even with a strong inflow of the liquid occurs.
- the pressure opening and the pressure compensation valve are present in an upper wall or ceiling of the main chamber or are hydraulically connected, so that penetration of the liquid is reliably avoidable.
- the pressure compensating valve may be arranged directly in a wall of the main chamber or be connected by a channel with a pressure equalization opening in the wall of the main chamber.
- the pre-chamber is arranged in or on an upper side of the main chamber. This facilitates rapid and complete drainage of the liquid from the antechamber into the main chamber. Also, a particularly compact design is achieved.
- the pre-chamber may protrude into the main chamber, in particular be housed therein so that it does not protrude from the main chamber to the outside.
- the pre-chamber may in particular be integrated in a cover of the main chamber.
- the pre-chamber may in particular be integrated in the top or top wall of the main chamber.
- the prechamber or its walls can or can in particular be integrally formed with the main chamber or its walls.
- the pre-chamber and the main chamber are spatially separated from each other and are connected to each other by means of a channel, for example a hose. This gives increased design and positioning flexibility.
- the level sensor of the pre-chamber has at least two electrodes, to which a voltage can be applied and wherein a current between them can be sensed. Achieving the activation level can be determined by a sudden increase in current or conductivity between the electrodes.
- all other suitable level sensors can be used, eg floats, reed sensors, ultrasonic sensors, etc.
- the outlet opening is located at or in a bottom of the main chamber. This allows a substantially complete emptying of the main chamber and thus their compact design possible.
- the household appliance may in particular be a laundry drying device and the liquid pump then in particular a condensate water pump.
- the domestic appliance may e.g. a washing machine
- the liquid pump e.g. a lye pump for pumping lye may be.
- FIG. 1 shows a sectional side view of a sketch of a liquid pump in a household appliance.
- the figure shows a liquid pump 1 with an antechamber 2 and a main chamber 3.
- the liquid pump 1 is provided here as a condensate water pump for use in a laundry drying apparatus W.
- the laundry drying device W can be in particular a washer-dryer or a tumble dryer.
- the pre-chamber has a filling opening 4 for filling liquid in the form of condensate water K.
- the condensate water K may have foreign matter such as lint and hair and dissolved therein laundry treatment aids such as detergent residues.
- the prechamber 2 has a passage opening 5, which connects the prechamber 2 with the main chamber 3.
- the passage opening 5 is lower than the inlet opening 4.
- the main chamber 3 has on a side wall at the level of the bottom an outlet opening 6 for discharging the condensate water K.
- the outlet opening 6 may, for example, lead to an outflow or a rinsing container of the laundry drying apparatus W.
- the main chamber 3 also has a pressure port 8 connected to an air pump 7.
- the main chamber 3 is hydraulically connected to a pressure side D of the air pump 7.
- the main chamber 3 can be pressurized when the air pump 7 is activated.
- the air pump 7 is deactivated, this is air-permeable between its suction side S and its pressure side D, so that then an open hydraulic channel between the main chamber 3 and the ambient air U is formed by the air pump 7, through which excess pressure can be discharged.
- a level-controlled valve element in the form of a spherical float 9 is arranged in the main chamber 3. The float 9 floats on the condensate water K located in the main chamber 3.
- the float 9 can be forced to a vertical direction of movement by means of a simple guide (not shown), e.g. through an elongated, vertical cage made of several poles.
- the position of the float 9 depends on a level h of the condensate water. If the level h is below a maximum filling level hmax (shown in dashed lines), the passage opening 5 is open, and condensate water K can flow into the main chamber 3, so that the filling level h increases. In this case, no condensate water K flows out of the outlet opening 6.
- a suitable valve e.g. a pressure relief valve can be achieved.
- the outlet opening 6 may be connected to or lead into a liquid channel which extends to a point above the maximum level hmax, e.g. in the form of an inverted 'U'.
- the float 9 starts at the edge of the passage opening 5 and closes it.
- the passage opening 5 has on its main chamber 3 side facing a sealing seat 5a for the float 9.
- the level h remains substantially at the maximum level hmax. Consequently, the condensate water K rises in the pre-chamber and reaches an activation level ha over time.
- the activation level ha is reached, the condensate water K reaches two stress-loaded electrodes 10 and closes them briefly. As a result, the achievement of the activation level ha is detected, whereupon the air pump 7 is activated.
- the electrodes 10 thus represent or form part of a level sensor (eg in addition to a voltage generator).
- the electrodes 10 may be connected to a control device (o.Fig.), Which receives the sensor signal and the air pump 7 is activated.
- the electrodes 10 may be directly connected to a relay of the air pump 7 and activate the air pump 7 by the short circuit.
- the air pump 7 With the activation of the air pump 7, this air pushes into the main chamber 3, which is thereby placed under an overpressure.
- the condensate water K in the main chamber 3 is forced through the outlet port 6, e.g. to a higher-lying washing container, and secondly, the float 9 is then pressed even on the edge of the passage opening 5, if the level h drops below the maximum level hmax.
- the air pump 7 is operated here for a predetermined period, within which the main chamber 3 is substantially emptied of the condensate water K.
- the air pump 7 With elapse of the predetermined period of time, the air pump 7 is stopped or deactivated again. As a result, the air pump 7 acts as an overpressure relief, so that air is discharged from the main chamber 3 into the environment and the overpressure collapses. In turn, the float 9 drops from the passage opening 5 and opens it. Thus, following the previously collected in the pre-chamber 2 condensate K flow into the main chamber 3, and the process described above can begin again. In addition or as an alternative to the air pump 7, it is also possible to use a separate pressure compensation valve 11 for the pressure equalization.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Water Supply & Treatment (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010029889A DE102010029889A1 (de) | 2010-06-09 | 2010-06-09 | Flüssigkeitspumpe für ein Hausgerät |
| PCT/EP2011/058612 WO2011154263A1 (de) | 2010-06-09 | 2011-05-26 | Haushaltsgerät mit einer flüssigkeitspumpe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2580479A1 true EP2580479A1 (de) | 2013-04-17 |
| EP2580479B1 EP2580479B1 (de) | 2016-11-16 |
Family
ID=44340260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11723421.1A Not-in-force EP2580479B1 (de) | 2010-06-09 | 2011-05-26 | Haushaltsgerät mit einer flüssigkeitspumpe |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2580479B1 (de) |
| CN (1) | CN103069172B (de) |
| DE (1) | DE102010029889A1 (de) |
| WO (1) | WO2011154263A1 (de) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3523102A1 (de) * | 1985-06-28 | 1987-01-08 | Fass Werner | Verfahren und vorrichtung zur entleerung von sammelbrunnen, insbesondere lenzbrunnen |
| CN1036089C (zh) * | 1994-03-30 | 1997-10-08 | 王政玉 | 气动液体泵 |
| IT1277183B1 (it) * | 1994-04-11 | 1997-11-05 | Bosch Siemens Hausgeraete | Pompa della condensa per un'asciugabiancheria |
| DE4447227C2 (de) * | 1994-04-11 | 2002-10-10 | Bsh Bosch Siemens Hausgeraete | Kondensatpumpe für einen Wäschetrockner |
| US6027314A (en) * | 1994-10-19 | 2000-02-22 | Breslin; Michael K. | Pneumatically powered submersible fluids pump with casing activator |
| GB2302916B (en) * | 1995-07-03 | 1997-09-10 | Spirax Sarco Ltd | Pressure powered pumps |
| DE19816455A1 (de) * | 1998-04-14 | 1999-10-28 | Mannesmann Vdo Ag | Füllstandssensor |
| DE10017241A1 (de) * | 2000-04-06 | 2001-10-11 | Bsh Bosch Siemens Hausgeraete | Verfahren zur Förderung von fließfähigen Stoffen |
| US20090053073A1 (en) * | 2007-08-20 | 2009-02-26 | Charles Barry Ward | Condensate Pump |
| JP5044501B2 (ja) * | 2008-08-01 | 2012-10-10 | 株式会社東芝 | 衣類乾燥機 |
-
2010
- 2010-06-09 DE DE102010029889A patent/DE102010029889A1/de not_active Withdrawn
-
2011
- 2011-05-26 CN CN201180039068.5A patent/CN103069172B/zh not_active Expired - Fee Related
- 2011-05-26 EP EP11723421.1A patent/EP2580479B1/de not_active Not-in-force
- 2011-05-26 WO PCT/EP2011/058612 patent/WO2011154263A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102010029889A1 (de) | 2011-12-15 |
| CN103069172A (zh) | 2013-04-24 |
| EP2580479B1 (de) | 2016-11-16 |
| CN103069172B (zh) | 2015-02-18 |
| WO2011154263A1 (de) | 2011-12-15 |
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