• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a method of heating water in a household appliance (60, 32, 100), which comprises pumping water by means of a pump that can pump water at different pump powers from a water supply (1) to a heater (28) through a conduit (26), where the pump pumps at a lower power level depending on the existence of a condition of presence of air in a pump (22), where the method further comprises pumping water from the supply of water (1) to the heater (28) at a higher power level. Also, the invention refers to a domestic water heating apparatus that works with said method. With the invention, the noise can be reduced during operation of the household appliance (60, 32, 100). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2656508A1
    申请号:ES201630918
    申请日:2016-07-06
    公开日:2018-02-27
    发明作者:Ivan DEL BLANCO RODRIGUEZ；Stefano Lavezzari
    申请人:BSH Hausgeraete GmbH；BSH Electrodomesticos Espana SA；
    IPC主号:
    专利说明:

    DESCRIPTION
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    The household appliance may comprise a user actuator for generating a steam or water request signal, and the controller is configured to operate the pump at the higher power level in accordance with the control scheme to achieve flow level adjustment. of steam or water in response to the steam or water request signal, and the controller is configured to operate the pump at the lower power level before operating it at the upper level in accordance with the control scheme when the condition occurs of presence of air in the pump.
    The method may comprise increasing the power of an initial lower power level to the higher power level. The power can be increased gradually (including multiple steps) or continuous. The increase in power can ensure smooth operation and that noise is reduced overall. As an alternative, the pumping power may be at a constant lower power level when the condition of air presence in the pump occurs, and may pass to the higher power level for regulated steam generation in accordance with the level adjustment of steam in a single step. The lower power level may include both the initial lower power level (non-zero power to ensure that the pumping in the conduit is taking place) and at least part of any increase in power to the higher power level. The time of the increase, that is, the time it takes to reach the upper power level starting from the initial lower power level, is preferably between 0.2 and 10 seconds, more preferably, between 0.5 and 5 seconds and, even more preferably, between 1 and 2.5 seconds. The higher power level is preferably more than 80%, more preferably, more than 90% of the maximum available pumping power. The initial lower power level is preferably less than 50% of the maximum available pumping power and, more preferably, it is less than 50% of the higher power level. The initial lower power level is preferably more than 30% of the upper power level and, more preferably, it is more than 30% of the maximum available pumping power.
    The controller of the domestic appliance may be configured to increase the power of an initial lower power level to the higher power level continuously or gradually. The lower power level may include the initial lower power level and at least part of any increase to the higher power level.
    The method may comprise the transition from an off state of the pump to an initial lower power level included in said lower power level, when the condition of air presence in the pump occurs. The transition can be done in a single step, in multiple steps, or increasing continuously.
    The controller may be configured to move the pump drive from an off state of the pump to an initial lower power level included in said lower power level, when the condition of air presence in the pump occurs. In particular, the transition can be carried out in a single step, in multiple steps, or increasing continuously.
    The initial lower power level can be predetermined. This means that the initial lower power level can be set at the factory or, otherwise, does not depend on operating conditions nor is it determined in any way by an algorithm.
    The method may comprise operating at the lower power level only for the duration of air displacement in the conduit that connects the water supply to the pump. That is, the method comprises expelling the air from the pump and the duct at a lower power level before operating at the higher power level to reach the adjustment of the steam level. This ensures efficient operation and lower noise. The time required to move the air from the duct, assuming that the duct is full of air, at the lower pumping power level can be predetermined, since the duct length is set and the pumping power is lower compared to the time profile It is known. In this way, the objective of the noise being low can be achieved without a significant increase in functional complexity. Therefore, the lower power level can be implemented without dependence parameters, such as temperature detection. The method may comprise increasing the power of an initial power level to the higher power level, as described above, such that the time required to move the air in the pump is met during the power increase to the level of higher power mentioned above. Alternatively, the air could be displaced in the pump when operating at a constant initial lower power level, and a one-step transition to the higher power level could be made.
    Accordingly, the preferred controller is configured to operate the pump at the lower power level only approximately while the air displacement in the conduit lasts, assuming that the conduit connecting the heater and the water supply is filled with air and , then, to operate the pump at the higher power level in accordance with the control scheme to achieve the adjustment of the water or steam flow level. The controller of the domestic appliance may be configured to operate at the lower power level in accordance with a predetermined initial lower power level and at least part of any increase in power to the higher power level in order to expel the air from the pump before operating at the higher power level.
    The method may comprise determining an adjustment of the steam or water flow level in response to the user's selection of a steam or water flow level. Alternatively, the adjustment of the steam or water flow level can be determined automatically (i.e., without the user selecting it). The adjustment of the steam or water flow level can be selected from at least high and low steam or water flow levels, in particular from at least high, medium and low steam or water flow levels. , and can be selected from a discrete range of settings or continuously. The higher power level for pumping water from the water supply to the heater can be regulated in accordance with the setting of the determined steam or water flow level. The regulation of the pumping power can be controlled in accordance with a predetermined pumping rate to achieve the adjustment of the steam or water flow level or, in accordance with a feedback loop based on one or more parameters (for example, pressure), to get the steam level adjustment.
    The household appliance may comprise a water flow level adjustment button
    or a steam flow level adjustment button to be directed by the user in order to select the steam or water flow level setting from at least high and low steam flow level settings or from Water. The controller is configured to regulate the power that drives the pump to the higher power level to pump water from the water supply to the heater in accordance with the selected steam or water flow level setting, and where, depending on whether it is given In the condition of the presence of air in the pump, the controller is configured to operate the pump at the lower power level before operating the pump at the higher power level in accordance with the adjustment of the selected steam or water flow level.
    The lower power level sets a pumping power lower than the higher pumping power levels to achieve an adjustment of the steam or water flow level, including any user selectable steam or water flow level setting and any automatic steam or water flow level adjustment.
    The pumping power can be adjusted to achieve lower and higher power levels by modifying the average voltage that drives the pump. The pump can be operated by means of a drive signal, so that the average voltage can be modified by adjusting the cycle or working frequency of the drive signal.
    Therefore, the preferred controller of the household appliance is configured to generate a pump drive signal, to which the pump is sensitive. The controller can be configured to adjust the power of the pump drive signal to achieve lower and higher power levels by modifying the average voltage of the pump. The controller can be configured to modify the average voltage by adjusting a cycle or the working frequency of the pump drive signal.
    Preferably, the pump for pumping water from the water supply to the heater is a solenoid pump. However, other types of pumps are possible and known to the person skilled in the art.
    The method may comprise supplying the steam generated through openings of a sole of an iron.
    Accordingly, the household appliance may comprise an ironing sole with one or more steam openings, and the controller is configured to drive the pump to pump water from the water supply through the conduit to the heater to generate steam for its supply through of the openings of the ironing sole.
    The water supply may be a water tank that is removable so that it can be refilled, for example, refilled in a tap.
    In a preferred embodiment of the invention, the heater is a steam generator. The steam generator can be, for example, a boiler or an instant steam generator such as a metal block (preferably aluminum) comprising channels for water to flow through them and be heated. Preferably, in this embodiment of the invention, the higher power level is regulated in accordance with an adjustment of the steam level. Similarly, the household appliance according to the invention is configured to operate the pump at the higher power level in accordance with a control scheme to achieve the adjustment of the steam level.
    A preferred household appliance according to the invention is a steam iron, preferably a steam iron comprising a steam station and an iron. The method may comprise supplying steam generated by a steam generator of the steam station from the steam generator through a flexible steam duct connecting a steam station and an iron.
    The household appliance may comprise an iron comprising the ironing sole. The iron can be a portable iron.
    The iron may comprise a steam chamber adjacent to the sole connected to the heater through a flexible steam duct, for example, a flexible tube or pipe.
    The heater may be included as part of a steam station to which the iron is connected through a flexible steam duct. The steam duct is preferably flexible to allow the user to move the iron as a steam station during ironing. The pump may be included in the steam station.
    In an alternative embodiment, the heater and pump are included as part of the iron, instead of being arranged in a steam station. In this case, the water supply may be provided separately from the heater, and the pump may be present at the location of the water supply or at the location of the iron. The conduit that connects the pump to the heater or the water supply to the pump, respectively, is preferably flexible to allow the user to move the iron in a steam station manner during ironing.
    In some embodiments of the invention, the sole of the iron can act as a steam generator. In this case, the temperature sensor may be fixed to the sole, and it should be understood that the temperature of the heater is the temperature of the sole.
    The sole of the iron may be associated with a heating element.
    The method may comprise controlling the sole heating element to achieve an adjustment of the level of the sole temperature. The heating level setting can be selectable by the user or set automatically (that is, without the user selecting it). The sole heating element may be fed in accordance with a feedback control loop to achieve temperature level adjustment, for example, where the feedback uses the detected sole temperature to determine the power to be applied. to the sole heating element.
    The household appliance may comprise a solenoid temperature sensor, and the controller of the domestic appliance may be configured to control the sole heating element to achieve an adjustment of the sole temperature level based on a control loop of feedback that depends at least on the detected sole temperature. The household appliance may comprise a temperature level adjustment button that is user-directed to select the sole temperature level setting. The button can be addressable to select from a discrete range of temperature level settings, and can be in the form of a dial, a collapsible button, a touch screen, a touch-sensitive element, or the like.
    The method may comprise pumping water from the water supply through the conduit to a heater that constitutes a steam generator, where the heater comprises a heating element. The power applied to the heating element of the steam generator can be adjusted in accordance with the adjustment of the steam or water flow level; that is, the power that drives the heating element and the pumping power is controlled to achieve the adjustment of the steam or water flow level.
    Accordingly, the heater of the household appliance may comprise a heating element. The controller is configured to operate the heating element and the pump using respective drive signals at regulated power levels to achieve adjustment of the steam or water flow level.
    The present invention provides a method of heating water in a domestic appliance and a domestic water heating apparatus that operates with reduced noise. In particular, unwanted noise caused by pumping a pump filled with air can be reduced, where the conduit connects a water supply and a heater. Noise reduction is made possible by reducing the power that drives the pump compared to higher power levels.
    Brief description of the figures
    The invention is illustrated in more detail by means of schematic drawings, in which:
    image6
    of the power, and the controller 20 is configured to receive the signal indicative of the power connection to determine an air presence condition in the pump 22.
    Referring to Figure 4, the controller 20 is configured to generate a pump drive signal D1, to which the pump 22 is sensitive. The controller 20 can adjust the power of the pump drive signal D1 to achieve higher and lower power levels by modifying the average voltage of the pump. The controller 20 may be configured to modify the average voltage by adjusting the cycle or working frequency of the pump drive signal D1.
    Continuing with reference to Figure 4, the boiler 28 comprises a boiler heating element 30. The controller 20 is configured to operate the boiler heating element 30 with a drive signal D2 and to drive the pump using a drive signal D1, where the respective power levels of the signals D1 and D2 are regulated so that an adjustment of the steam flow level is achieved.
    Referring to Figure 5, the controller 20 is configured to start by operating the pump 22 at an initial lower power level L when the condition of presence of air in the pump 22 occurs, and where the controller 20 is configured to drive the pump 22 at a higher power level in accordance with a control scheme to achieve an adjustment of the steam flow level. The power of the initial lower power level L is predetermined at the start and includes a power increase to the higher power level H. The power supplied to the pump goes from zero power (pump off state) to the initial lower power level L in a single step in this embodiment. The time required at the lower power level, which includes the initial power level L and the increase to the higher power level H, to displace all the air in the pump 22 is fixed, since the length of the duct 26 is set. The higher power level H depends on a control algorithm that sets the higher pumping power based on at least one adjustment of the steam flow level. The controller 20 is configured to increase the power of the initial lower power level L, which is predetermined, to the higher power level H. In the embodiment of Figure 5, this occurs by increasing continuously, although the possible gradual increases (for example, a single step or multiple steps). An alternative to the time profile with increased power shown in Figure 5 would be to operate the pump 22 at a constant initial power level for the time necessary to expel the air from the tube and then increase the power to the level of higher power H set by a control algorithm to achieve the adjustment of the current steam flow level.
    Continuing with reference to Figure 5, when the condition of the presence of air in the pump 22 has been determined, the pump 22 starts operating at an initial low power level L to start by displacing the air in the pump 22 and replacing it by water from water tank 1 removable. Then, the controller 20 is configured to increase the power to the upper power level H to continuously increase the power of the initial lower power level L to the higher power level H. The lower power level described herein includes at least part of the power increase to the higher power level H defined by the control scheme, so that the air is being displaced in the pump 22 during the application of the initial power level L and also during the power increase to the higher power level H By operating at the lower power level during air displacement, unwanted noise can be reduced compared to if the air was displaced by operating the pump 22 at the higher power level
    H.
    By way of example, the pump 22 may be a solenoid pump, where a diode is normally arranged in series. In this case, the maximum available pumping power (100%) is given when the pump with the diode in series is connected to the mains voltage (usually between 220 and 240 V). In this case, the power level can be controlled by controlling the voltage supply to the pump 22, where the higher power level can be adjusted, for example, between 80% and 100%, and the lower power level It can be adjusted between 30% and 50%. The lower power level is adjusted so that the air inside the circuit can move and to prepare the pump 22 so that the noise decreases as much as possible. The increase time between the lower power level and the higher power level can be adjusted between 0.5 and 5 seconds, depending on the extension of the pump 22 and the tube circuit, for example.
    Referring to FIG. 3, the domestic appliance 36 comprises a plate 32 with a heat insulating housing 51 defining a handle 52 and a sole 16 providing a heated flat surface for ironing. The sole 16 includes a
    or more openings (not shown) through which steam is expelled for steam ironing. The iron 32 includes a steam chamber (not shown) adjacent to the sole 16 to receive steam and distribute steam through the openings of the sole 16 to an item being ironed. In an alternative embodiment of the invention, there is no steam chamber separated from the boiler 28, but the boiler 28 doubles as a steam chamber.
    Continuing with reference to Figure 3, the iron 32 comprises one or more steam discharge buttons 13, 14, which constitute a user actuator for generating a steam request signal. The controller 20 is configured to operate the pump 22 at the higher power level H in accordance with the control scheme to achieve the adjustment of the steam flow level in response to the actuation of the buttons 13, 14, and the controller 20 is configured to operate the pump 22 at the lower power level, which includes the initial lower power level L, before operating the pump 22 at the upper level in accordance with the control scheme when the condition of presence of air in the pump 22 occurs .
    The plate 32 includes a heating element (not shown) for heating the sole 16. The domestic appliance 36 comprises a solenoid temperature sensor (not shown), and the controller 20 is configured to control the heating element of the sole to achieve an adjustment of the sole temperature level based on a feedback control loop that depends at least on the detected sole temperature 16.
    Referring to Fig. 2, the domestic appliance 36 comprises a control panel 40 with a contact sensitive display 8. The control panel 40 is included in the steam station 60 in this embodiment. The contact sensitive display 8 includes a touch icon for the selection of the steam flow level 44 which constitutes a steam adjustment button to be directed by the user to select a steam flow level adjustment from among the settings of the low, medium and high steam flow level. The controller 20 is configured to regulate the power that drives the pump 22 to the upper power level H to pump water from the water supply 1 to the boiler 28 in accordance with the setting of the selected steam flow level.
    The display 8 includes an icon for the selection of the temperature level 42 which constitutes a button for adjusting the temperature level, and which is user-directed to select the adjustment of the sole temperature level. The button is operable to select from a discrete range of temperature level settings that include low, medium and high sole temperature levels 16.
    The domestic appliance 36 operates in this embodiment as follows.
    The controller 20 receives a steam request signal generated by the actuation of one or more steam discharge buttons 13, 14. The controller 20 responds to the steam request signal by controlling the pump 22 and the boiler heating element 30 at powers defined by the drive signals D1 and D2 and in accordance with one or more control schemes / algorithms, operating as a closed loop feedback mode to achieve an adjustment of the steam flow level. The closed loop feedback scheme may be dependent on at least the vapor pressure detected in the boiler 28. The adjustment of the steam flow level corresponds to an automatically generated steam flow or a user selected steam flow in accordance with the option selected by the latter by means of the touch icon for the selection of the steam flow level 44. If the condition of the presence of air in the pump 22 is determined, the controller 20 will cause the pump 22 to first empty the duct 26 of air at a lower power level, which includes the initial lower power level L, before operating the pump 22 at the upper power level H in accordance with the closed loop feedback algorithm to achieve the level adjustment of the steam flow
    The controller 20 can determine the air presence condition in the pump 22 in at least two ways. In a first method, the controller 20 receives a signal from a temperature sensor to determine the condition of the presence of air in the pump 22. In a second method, the controller 20 receives a signal indicative of the connection of the power generated as a result. that the main on and off button 9 is activated. If the condition of the presence of air in the pump 22 is determined based on one or both of the first and the second method, the pumping power then begins to operate at the initial lower power level L before being increased to a power level relatively higher in the manner shown in Figure 5 or, otherwise, raised to the higher power level H defined by the steam generation control scheme. All the air of the pump 22 can be displaced during operation of the pump 22 to the lower power level, which includes the initial lower power level L and at least part of the power increase portion to the upper power level H .
    The initial lower power level L and the increase time before the higher power level H are set to last just long enough to displace the air from the pump 22, starting from the base that the conduit 26 is filled with air.
    The embodiment shown in the figures includes a steam station connected to an iron through a flexible steam duct. In a variant according to the invention, the iron itself can comprise the pump, the boiler, and the water tank.
    The features as described in the previous description, the claims and the figures may be linked to the invention in any combination.
    Figure 6 shows a corresponding arrangement in a hot beverage machine 100 for preparing coffee drinks. The machine 100 comprises a water tank 1 and a pump 22 that pumps the water W to a heater 28. In a coffee brewing mode, the water HW heated by the heater 28 is directed to the distillation chamber 105 which contains a coffee capsule P. Also, the heater 28 of the hot beverage machine 100 can act as a steam generator for preparing hot steam in a steam generating mode of the machine 100. In this mode, a mixture of water and steam DW It is directed to the steam separation chamber. The steam D leaves the machine through a steam outlet 110 comprising a cappuccino nozzle 112. A controller 20 controls a valve 114 to switch between the beverage preparation mode and the steam generation mode.
    As in the case of the steam iron 60, 32, the hot beverage machine 100 comprises a temperature sensor (not shown). The controller 20 is configured to receive a signal from the temperature sensor to determine an air presence condition in the pump 22. Regarding the control of the power level of the pump 22 depending on whether the air presence condition occurs In pump 22, the hot beverage machine 100 contains the same components and operates in the same way as the steam iron 60, 32 described above.
    权利要求:
    Claims (1)
    [1]
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    同族专利:
    公开号 | 公开日
    DE102016220174B3|2017-10-26|
    EP3266926A1|2018-01-10|
    ES2656508B1|2018-12-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US6212332B1|1998-12-15|2001-04-03|John C. K. Sham|Steam iron station|
    US20070154321A1|2004-08-26|2007-07-05|Stiles Robert W Jr|Priming protection|
    WO2006067756A2|2004-12-22|2006-06-29|Koninklijke Philips Electronics N.V.|Device for generating steam|
    FR2921677A3|2007-09-29|2009-04-03|Tsann Kuen China Entpr Co Ltd|STEAM IRON|
    ES2574578A1|2014-12-19|2016-06-20|Bsh Electrodomésticos España, S.A.|Steam generation system, steam ironing device and procedure to operate a steam generation system |
    JPH0698997A|1992-09-21|1994-04-12|Matsushita Electric Ind Co Ltd|Steam iron|
    DE19907074A1|1999-02-19|2000-08-24|Bsh Bosch Siemens Hausgeraete|Water-bearing household appliance, in particular household dishwasher|
    DE102004062747A1|2004-12-27|2006-07-06|BSH Bosch und Siemens Hausgeräte GmbH|beverage brewer|
    FR2952135B1|2009-11-04|2013-02-22|Seb Sa|METHOD FOR CONTROLLING A PIEZOELECTRIC PUMP OF HOUSEHOLD APPLIANCE AND HOUSEHOLD APPLIANCE IMPLEMENTING SAID METHOD|
    DE102011000760A1|2011-02-16|2012-08-16|Miele & Cie. Kg|Method for emptying liquid e.g. fresh water from storage vessel in rinsing chamber of dishwasher, involves starting circulating pump with low speed, and operating pump with high rotation speed during emptying liquid in rinsing chamber|
    DE102012201234B4|2012-01-27|2018-03-29|BSH Hausgeräte GmbH|Electrically heatable device with steam generator and method for controlling an electrically heatable device with steam generator|FR3081888B1|2018-05-31|2020-05-15|Seb S.A.|IRONING APPARATUS HAVING A STEAM CONTROL MEMBER|
    FR3081887B1|2018-05-31|2020-05-15|Seb S.A.|IRONING APPARATUS HAVING A STEAM CONTROL MEMBER|
    法律状态:
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201630918A|ES2656508B1|2016-07-06|2016-07-06|METHOD OF GENERATING STEAM AND DOMESTIC STEAM GENERATION DEVICE|ES201630918A| ES2656508B1|2016-07-06|2016-07-06|METHOD OF GENERATING STEAM AND DOMESTIC STEAM GENERATION DEVICE|
    DE102016220174.3A| DE102016220174B3|2016-07-06|2016-10-14|Process for steam generation and steam generation system|
    EP17176881.5A| EP3266926A1|2016-07-06|2017-06-20|A method of generating steam and a steam generation system|
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