RU2442849C2 - Method for regulation of steam installation in home appliance - Google Patents

Abstract

FIELD: engineering. ^ SUBSTANCE: the invention relates to method of regulation of steam installation in home appliances, where the steam installation produces water steam, in particular, hot steam of overheated steam. Water steam is fed to the processing section, specifically, to the drum. The said steam installation comprises at least one steam generator with heating element and water feeding means. The steam generator temperature is measured, specifically, the surface temperature and/or the heating element temperature, and in normal operating mode the heating element of water feeding means are regulated in such a manner so the measure temperature is kept within the given lower and upper limits. The normal operation mode comprises the first stage and the second stage, furthermore, in the first stage which begins after reaching the given lower temperature limit until reaching the given upper temperature limit the heating element is active and the water feeding means feed the water with the given volume flow, which is the fixed second volume flow or the volume flow which is changed accoring to the measured temperature in the given second dependence. In the second phase of normal operating mode which which begins after reaching the given upper temperature limit until reaching the given lower temperature limit the heating element is deactivated or its heat reduced in comparison with the first phase, and the water feeding means feed the water with the given third volume flow or the volume flow which is changed in accordance with the measured temperature in the third dependence. The second phase duration is measured, compared with the given duration value, and if the measured value differs from the given value more than the given difference value, the troubleshooting service begins. ^ EFFECT: guaranteed constant steam temperature and/or steam constant volume flow, which prevents spotting and textile products damage. ^ 25 cl, 6 dwg

Description

The invention relates to a method for regulating a steam installation in a domestic appliance, in particular in a drying machine for textiles or in a washing machine.

Home appliances are well known in the art. Thanks to them, as you know, textiles are washed and dried. Typically, drying machines use either a condensation process or a process for displacing moisture by air.

It has been established that the processing quality of textiles can be improved by using steam, which is used for textiles in a household appliance. It is used, in particular, in washing and drying machines. Due to this, unwanted odors can be removed. Favorable steam processing of textiles may also be carried out. To this end, water vapor, in particular hot or superheated water vapor, is supplied to a treatment area, which is usually a drum containing textile products. To do this, in a washing machine or dryer, you must have a steam installation for generating steam.

Typically, a steam installation is located inside a household appliance. The steam installation contains at least a steam generator. A steam generator needs water to generate steam. Typically, this water is supplied from the water tank through a pump, so this pump is usually a component of a steam plant. By means of a pump, the volumetric flow rate of water in the steam generator can be controlled. Of course, various methods of controlling the volumetric flow rate of water are possible, for example by means of adjustable valves.

Inside the steam generator, the feed water evaporates to generate steam. This steam, generated by the steam generator, is usually fed through the steam pipe to the outlet pipe to the processing area in the home appliance.

WO 2006/067756 describes a device for generating steam, comprising a boiler equipped with an electric heating means and a current control means for regulating the current in the heating means; the device also comprises at least one temperature sensor and a pressure sensor. The device is capable of generating steam with different capacities; however, with a relatively small productivity, the regulating means has the ability to control the current in the heating medium based on a signal from the temperature sensor, and with a relatively high productivity the regulating means has the ability to regulate the current in the heating means based on pressure.

WO 01/75360 describes a household device for generating steam, comprising a tank for water at atmospheric pressure; a boiler for receiving water to be evaporated and comprising a heating unit comprising a heat source for evaporating water, at least partially immersed in water and having a raised portion that projects along a predetermined direction, and a temperature sensor located in the protective shell, while protecting the shell is in contact with a heat source, means for supplying water from the tank to the boiler for delivering steam from the boiler to the steam-using device, while the contact area between the protective the sheath and the raised portion extends along a predetermined direction so that the contact region is fairly wide.

EP 1659205 describes a method for controlling a washing machine comprising a steam generator having a temperature sensor and a control unit for supplying water to the steam generator to generate steam. The method includes the step of determining the temperature of the steam generator and supplying water to the steam generator when the desired temperature is reached.

The disadvantage of steam generators is that the generated steam usually contains a certain amount of water droplets. In the process of processing textile products with steam, these droplets come in contact with textile products and can lead to the formation of unwanted stains.

Another problem is that the steam generated by the steam generator usually has variable properties, such as temperature and volumetric flow. This can damage delicate textiles.

Another problem is that the planned steam processing of textile products cannot continue for reasons related to malfunctions in the steam system, for example, pipe leakage in the water supply system. This may harm textile products and / or household appliances.

The objective of the present invention is to develop a method for regulating a steam installation in a household appliance, in particular in a household drying or washing machine, which would eliminate the above-mentioned problems. In particular, a method is preferred that leads to improved steam generation by a steam generator, in particular a method that produces steam that does not contain water droplets or at least contains a small amount of droplets and that has substantially constant properties, such as temperature and / or volumetric flow rate. In addition, a method that detects malfunctions in the steam system, such as insufficient or interrupted water supply, and respond to these malfunctions, is particularly desirable.

This problem is solved in the method according to paragraph 1 of the claims. Preferred embodiments of the invention are mentioned in the dependent claims.

The invention relates to a method for regulating a steam installation in a domestic appliance. The specified steam installation produces water vapor, in particular hot or superheated water vapor, which is supplied to the processing area, in particular to the drum. The steam installation comprises at least one steam generator with a heating element and water supply means for supplying water to the steam generator. The method is characterized in that the temperature of the steam generator is measured, in particular the temperature of the surface of the steam generator and / or the temperature of the heating element of the steam generator, and / or the temperature of the steam, and during normal operation, the heating element of the steam generator and / or water supply are regulated so that the measured temperature is maintained between preset lower and upper temperature limits.

Thanks to this method, it becomes possible to generate steam that does not contain water drops or contains a small amount of them. Moreover, this method allows to provide a constant temperature of the steam and / or approximately constant volumetric flow rate. As a result, water droplets are absent or a very small amount of them comes into contact with the processed textile products. Accordingly, there are no unwanted spots caused by drops of water, or at least there is only a small amount.

Thanks to the invention, it becomes possible to control the heating element of the steam generator and / or means of its water supply so that the measured temperature fluctuates between predetermined lower and upper temperature limits.

In addition, the method may include a start operation. In this start-up operation, the heating element of the steam generator and / or water supply are controlled so that the measured temperature reaches the temperature range between the predetermined lower and upper temperature limits. The start operation is followed by normal operation.

Preferably, during the start-up operation in its first phase, which continues until the predetermined first temperature is reached, the steam generator heating element and the water supply are turned off, and in the second phase, which starts when the predetermined first temperature is reached, the steam generator heating element is still turned on, and the water supply means water to the steam generator with a given volumetric flow rate, which is a fixed first volumetric flow rate of water, or a volumetric flow rate, which varies in accordance with the measured temperature in the given first dependence.

It is favorable that in the proposed method, under normal operating conditions in the first phase, which begins when a predetermined lower temperature limit is reached and continues until a predetermined upper temperature is reached, the heating element of the steam generator is turned on and the water supply means supply water to the steam generator with a predetermined volumetric flow rate, which is a fixed second volumetric flow rate of water, or a volumetric flow rate that varies in accordance with the measured temperature in a given second STI In addition, during normal operation in the second phase, which begins when the specified upper temperature is reached and continues until the specified lower temperature is reached, the steam generator heating element is turned off, or its heating is reduced compared to the first phase of the normal operating mode, and the water supply supplies water to a steam generator with a predetermined volumetric flow rate, which is a fixed third volumetric flow rate of water or a volumetric flow rate that changes in accordance with the measured temperature in a third predetermined relationship.

From the final temperature of the start-up operation it depends on which phase the normal operating mode starts from, the first or the second. If the start operation ends at a predetermined lower temperature limit, normal operation starts from the first phase, as described above. If the start operation ends at a given upper temperature limit, the normal operating mode starts from the second phase described above.

Preferably, the fixed second water volumetric flow rate is equal to the third water volumetric flow rate, and / or the predetermined second dependence and the predetermined third dependence are equivalent or equal. Also, a fixed first volumetric flow rate of water may be equal to a fixed second and third volumetric flow rate of water, and / or a predetermined first relationship, a predetermined second relationship and a predetermined third relationship are equivalent or equal, and / or a predetermined first relationship, a predetermined second relationship and a predetermined third relationship are part of an agreed core relationship between measured temperature and volume flow.

Preferably, the volume flow depends only on the measured temperature and is not dependent on the active operation or phase.

Undoubtedly, the dependencies must be adapted to the thermodynamic system used.

Preferably, the water volumetric flow rate is low at measured low temperatures and high at measured high temperatures.

Favorably, the predetermined first relationship, and / or the predetermined second relationship, and / or the predetermined third relationship, and / or the underlying relationship are or are directly proportional to the relationship between the measured temperature and the volumetric flow rate.

Ultimately, the result of the aforementioned method is a low tendency to form water droplets in the generated pair, even if the steam generator operates at low temperatures, for example near or at the lower temperature limit. In addition, an adequate relationship between the volumetric flow rate of the water and the measured temperature leads to a low on-off frequency of the heating element of the steam generator, especially because of the adequate regulation of the volumetric flow rate of the water until the upper or lower temperature limits are reached. The result is a high quality of the produced steam, for example, its constant properties.

In a preferred embodiment, the predetermined lower temperature limit is in the range of 115 ° C to 140 ° C, preferably 120 ° C to 135 ° C, and most preferably is about 130 ° C, and the predetermined upper temperature limit is in the range of 140 ° C to 170 ° C, preferably from 145 ° C to 160 ° C, and most preferably is about 150 ° C.

It is favorable that said first temperature is equal to or higher than 100 ° C, and preferably is in the range from 100 ° C to 130 ° C, even more preferably in the range from 100 ° C to 115 ° C.

The proposed method mainly includes the following steps:

a) measuring the duration of the second phase of the normal operating mode;

b) comparing this measured duration with a given duration value;

c) the beginning of the troubleshooting operation in the event that the measured phase duration deviates from the set duration value by more than the set deviation value.

Alternatively or additionally, the method may include the following steps:

a) measuring the frequency of the temperature cycle during normal operation and / or the frequency of turning on / off the heating element of the steam generator during normal operation;

b) comparing this measured frequency with a given frequency value;

c) the beginning of the troubleshooting operation in the event that the measured frequency deviates from the set frequency value by more than the set value of the deviation.

Both of the aforementioned embodiments of the invention make it possible to detect malfunctions in the steam system, for example insufficient or interrupted water supply, and to respond to these malfunctions. For example, an alarm and / or message may be provided to a user and / or service. In addition, an adequate response can help prevent damage to device components associated with malfunctions.

Said troubleshooting operation may comprise at least one of the following procedures:

a) giving a warning signal, in particular an indication of a visual warning signal and / or a loud acoustic warning signal, and / or

b) stopping or interrupting the active workflow of the home appliance, and / or

c) turning on the water supply of the water tank, which is located in or on the household appliance, to receive water for the steam installation, mainly opening a valve, in particular a magnetic valve, installed to open and close the water supply of the water tank, and / or

d) the commissioning of a spare tank located in or on the household appliance to provide steam installation with water.

The water supply means for supplying water to the steam generator may be a pump or comprise a pump. The volumetric flow rate of the water supplied by the pump can be controlled by adjusting the operating frequency of the pump and / or by turning on the pump.

Alternatively or additionally, the water supply means may be valves or comprise valves that are arranged to control the volumetric flow rate of water.

In the proposed method, the regulation can be carried out by at least one electronic control device located in or on the home appliance. This electronic control device may be combined with the electronic control device of the home appliance and / or may be connected with the electronic control device of the home appliance.

Said household device may be a drying machine for textiles, in particular a condensation type drying machine. The proposed method is also applicable to washing machines, in particular for a household washing machine.

Undoubtedly, all the mentioned parameters can be saved and later can be displayed on at least one of the electronic control devices, for example, for maintenance purposes.

The following is a detailed description of preferred embodiments of the invention with reference to the drawings.

Figure 1 schematically shows a household dryer with a steam installation, which can be adjusted by the method according to the invention (shown as an example), front view;

figure 2 schematically shows a steam installation located inside the dryer shown in figure 1, a top view;

figure 3 is another example of a domestic drying machine with a steam installation, which can be controlled by the method according to the invention;

figure 4 is an enlarged part of figure 3, which shows the module of the steam installation;

figure 5 is a time-temperature diagram during the trouble-free operation of a steam installation in a domestic appliance, for example in a drying machine, which is shown in figures 1-4;

in Fig.6 is a time-temperature diagram based on Fig.5 and a comparison of trouble-free operation with work in case of malfunctions in a steam installation in a household appliance, for example in a drying machine, which is shown in Figs. 1-4.

The household appliance 1 shown in FIG. 1 is a domestic drying machine for drying textiles in which drying of textile products is carried out in a well-known manner. Textiles (not shown) are placed in the drum 3, which is usually the processing area. The drum 3 is closed by the door 20. In this case, the dryer 1 is a condensation type dryer, i.e. it has a condensation tank 16, which collects water extracted from wet textile products.

To improve the quality of processing of textile products in the drying machine 1, steam treatment is performed. Steam, i.e. hot or superheated steam is supplied to textile products in the drum 3 of the drying machine 1. For this purpose, a modular steam installation 2 for generating steam is located in the drying machine 1. The water tank 6 for supplying the steam installation with water is located in the side part 13 of the drying machine 1, in its upper part 14 near the side panel 17 and between the side panel 17 and the condensation tank 16. The condensation tank 16 occupies a part of a box (not shown), which can be removed from the dryer 1 to empty the tank. The front panel 21 of this box is visible in FIG. In addition, the specified front panel 21, at least partially closes the water tank 6.

The steam unit 2 is designed as a compact modular device, so it can be inserted into or removed from the dryer 1.

As shown in figure 1, the steam installation 2 is located on the left side, that is, in the side part 13 of the dryer, in the lower part 15, in particular, between the drum 3 and the side panel 17 of the dryer 1. It is also possible to place the steam installation 2 in the upper part 14 of the home appliance 1.

Details of the steam installation 2 are shown in FIG. The steam installation 2 contains various components: a steam generator 4 with a heating element, which is supplied with water from the water tank 6 by means of a pump 5 located inside the steam installation 2. The steam generator 4 and pump 5 are mounted on a base plate 11 inserted into the receiving means 12 installed in the drying machine 1 and shown schematically. These receiving means 12 are fitted to the holes 22 in the base plate 11. The base plate 11 is mounted on the receiving means 12 by vertical movement and is fixed by additional horizontal movement, due to which a horizontal recess (not shown) in the receiving means 12 is included in the corresponding recess 23 in the base plate eleven.

Alternatively, various quick disconnect means can be used that provide reliable installation in the home appliance 1 of a base plate 11 supporting various parts of the steam installation 2.

In addition, the water tank 6 can be installed as an additional part of the modular steam installation 2 (not shown), for example, when it is located above the steam generator 4 and / or pump 5.

The steam generated by the steam generator 4 is supplied through the steam pipe 18 to the outlet pipe 19 and to the drum 3.

In addition, although this is only shown schematically, the steam installation 2 also has a safety device 7 and an electronic control device 8. In addition, there is a device 9 for electrical connection with the control device 10 of the drying machine 1 (Fig. 1). One part 9 ″ of the device 9 is fixed to the base plate 11, and the other part 9 ″ of the device 9 can be connected to the home appliance 1. When you insert the base plate 11 into the home appliance 1 and move it horizontally, the electrical connection is achieved automatically, since the two parts 9 ′ and 9 ″ come in contact.

Alternatively, a plug-socket connector may be used as the electrical connection device. In this case, the electrical connection between the steam unit and the control device of the dryer can be made by connecting the plug to a socket.

The tank 6 provides storage and supply of clean and disinfected water to generate steam. As shown in figure 1, it is small in size in order to use the free space between the condensation tank 16 and the side panel 17.

Various components can be secured to the base plate 11 using several bolts, for example four, to securely fasten the components to the base plate 11.

Figure 3 shows another example of a domestic drying machine 1 according to the invention. The side panel is conditionally removed, due to which the location of the water tank 6 and the steam unit module 2 in the drying machine 1 is clearly visible. FIG. 4 shows an enlarged view of the location of the steam unit 2 shown in FIG. 3. You can see the steam generator 4, the pump 5, the base plate 11 and the receiving means 12 installed in the drying machine 1 for receiving the base plate 11.

Figure 5 shows a time-temperature diagram, with time plotted along the X axis and temperature along the Y axis. Line 24 indicates the temperature measured on the surface of the steam generator 4 of the steam installation 2 of the household appliance 1. A similar curve would be obtained when measuring the temperature of the heating element of the steam generator 4 or when measuring the temperature of water vapor.

The graph shows the change in temperature of the steam generator 4 over time during operation. The operation begins with the start-up operation 26 of the steam installation 2, which is indicated on the graph by the starting point 25. During the start-up operation 26, the heating element of the steam generator 4 and the pump 5 are adjusted so that the measured temperature 24 reaches a predetermined lower temperature limit 30. Subsequently, when normal operating mode 32, the measured temperature curve 24 fluctuates between a predetermined lower temperature limit 30 and a predetermined upper temperature limit 31.

The start operation 26 is divided into two phases, with the second phase 28 following the first phase 27. The first phase 27 continues until the predetermined first temperature 29, which exceeds 100 ° C, is reached. During said first phase 27, the heating element of the steam generator 4 is turned on, and the water supply means 5 are turned off. As a result, the steam generator heats up, and the measured temperature is continuously increasing along the line 24 during the first phase 27 of the start-up operation 26. Since there is no water supply to the steam generator, during this first phase 27 the steam is not generated or a small amount is generated.

When the first temperature 29 is reached, the first phase 27 of the start-up operation 26 is completed and the second phase 28 of the start-up operation 26 begins. During the second phase 28, the heating element of the steam generator 4 is still turned on, and the water supply means 5 supply water to the steam generator at a predetermined volumetric flow rate. The specified predetermined volumetric flow rate of water is a fixed first volumetric flow rate of water. This first volumetric flow rate of water can be obtained by adjusting the operation of the pump 5 with a certain first frequency. Undoubtedly, there is the possibility of changing the volumetric flow rate of water in accordance with the measured temperature in a given first relationship. During the second phase 28 of the start-up operation 26, the steam generator 4 is further heated, while the measured temperature is continuously increasing along the line 24 during the second phase 28 of the start-up operation 26. In addition, during the second phase 28 of the start-up operation 26, the steam generator generates steam.

When the measured temperature (line 24) reaches the lower temperature limit 30, the second phase 28 of the start-up operation 26 and the start-up operation 26 are completed, and the normal operating mode 32 starts. During this normal operating mode 32, the heating element of the steam generator 4 and the water supply means 5 are regulated in such a way so that the measured temperature is maintained between a predetermined lower temperature limit 30 and a predetermined upper temperature limit 31. Normal operating mode 32 consists of a first phase 33 and a second phase 34, torye continuously alternated during the normal operating mode 32.

The normal operating mode 32 starts at the end of the start-up operation 26 when the measured temperature (line 24) reaches the lower temperature limit 30. The normal operating mode 32 starts with the first phase 33. During this first phase 33 of the normal operating mode 32, the heating element of the steam generator 4 is turned on and pump 5 delivers water to the steam generator 4 with a given volumetric flow rate. This predetermined volumetric flow rate is a fixed second volumetric flow rate. The specified second volumetric flow rate of water can be obtained by adjusting the operation of the pump 5 with a certain second frequency. Undoubtedly, there is the possibility of changing the volumetric flow rate of water in accordance with the measured temperature in a given second relationship.

During the first phase 33 of the normal operating mode 32, the steam generator 4 is heated, while the measured temperature increases along line 24 during the first phase 33 of the normal operating mode 32. In addition, during this first phase 33 of the normal operating mode 32, the steam generator 4 generates steam.

The first phase 33 of the normal operating mode 32 is completed when the upper temperature limit 31 is reached. At this time, the second phase 34 of the normal operating mode 32 begins.

During said second phase 34 of normal operating mode 32, the heating element of the steam generator 4 is turned off, and the pump 5 delivers water with a predetermined volumetric flow rate to the steam generator 4. This predetermined volumetric flow rate is a fixed third volumetric flow rate. The specified third volumetric flow rate of water can be obtained by adjusting the operation of the pump 5 with a certain third frequency. Undoubtedly, there is the possibility of changing the volumetric flow rate of water in accordance with the measured temperature in a given third dependence.

During the second phase 34 of the normal operating mode 32, the steam generator 4 is cooled, while the measured temperature decreases along line 24 during the second phase 34 of the normal operating mode 32. In addition, during the second phase 34 of the normal operating mode 32, the steam generator 4 continues to generate steam .

The second phase 34 of the normal operating mode 32 continues until the predetermined lower temperature limit 30 is reached. At this time, the next first phase 33 of the normal operating mode 32 begins. When the upper temperature limit 31 is reached again, the next second phase 34 of the normal operating mode 32 begins. etc.

Thanks to the described method, steam is generated during the entire normal operating mode 32, and this steam does not contain water droplets or at least contains a small amount. In addition, the steam generated has an approximately constant temperature lying within the temperature range limited by two temperature limits. The steam flow rate remains approximately constant as well.

5, the predetermined lower temperature limit is about 130 ° C, the predetermined upper temperature limit is about 150 ° C, and the first temperature is about 110 ° C.

Alternatively, it is possible to continue the start-up operation until reaching the upper temperature limit 31. This means that the second phase of the start-up operation is longer, it ends when it reaches not the lower temperature limit 30, but the upper temperature limit 31. As a result, the normal operating mode starts again at the end of the start operation, and in this case, the measured temperature reaches the upper temperature limit 31. As a result, the normal operating mode in this case begins with the second phase, as described above. The specified second phase ends when the lower temperature limit 30 is reached. At this time, the first phase of the normal operating mode, as described above, begins and continues until the specified upper temperature limit 31 is reached. Then the next second phase of the normal operating mode begins, etc.

FIG. 6 shows yet another time-temperature diagram similar to that shown in FIG. 5. Line 24 of the measured temperature during trouble-free operation, corresponding to the diagram in figure 5, is depicted as continuous. Additionally, in Fig. 6, the dashed line shows the corresponding line 35, indicating the measured temperature during malfunctions. Malfunctions can be associated with a leak in the water supply system, with an empty water tank, with a pump defect, etc. In this case, the volumetric flow rate of the water in the steam generator 4 is lower than usual, and therefore, cooling the steam generator, which mainly depends on the volumetric flow rate of the water, takes longer.

Figure 6 shows the differences in the duration of the second phase 34 of the normal operating mode 32. The duration of the second phase 34 during trouble-free operation is indicated by 36, and the duration of the second phase 34 during malfunctions is indicated by 37. The duration of the second phase 37 during malfunctions is much longer duration 36 of the second phase during trouble-free operation, therefore, when measuring the duration of the second phase 34 and comparing the measured value with a given value or with a given range of values, the ability to detect malfunctions in the steam installation and start the operation to resolve them.

Additionally, or alternatively, it is possible to measure or determine the frequency of the measured temperature and compare it with a given value or with a given range of values. The switching frequency of the heating element of the steam generator can also be measured or determined and subsequently this frequency can be used to detect the malfunctions that have occurred and to begin the operation to eliminate them.

List of Reference Items

1 Home appliance 20 doors 2 Steam installation 21 Front Panel 3 Processing area (drum) 22 hole 4 Steam generator 23 Deepening 5 Water supply, pump 24 Line showing the measured surface temperature of the steam generator (trouble-free operation) 6 water tank 25 Starting point 7 safety device 26 Start operation 8 Electronic control device 27 The first phase of the start operation 26 9, 9 ′, 9 ″ Electrical connection device 28 Second phase of the launch operation 26 10 Regulator 29 first temperature 11 Base plate 30 Lower temperature limit 12 Reception facilities 31 Upper temperature limit 13 Side 32 Normal operation 14 Upper 33 First phase of normal operation 32 15 Bottom 34 Second phase of normal operation 32 16 condensation tank 35 Line showing the measured surface temperature of the steam generator (malfunctioning) 17 side panel 36 Duration of the second phase 34 (trouble-free operation) 18 Steam pipe 37 Duration of the second phase 34 (malfunctioning) 19 Outlet

Claims (25)

1. The method of regulating a steam installation (2) in a household appliance (1), comprising generating, using a steam installation (2), water vapor, in particular hot or superheated steam, which is supplied to the treatment area, in particular to the drum, the steam installation (2) contains at least one steam generator (4) with a heating element and water supply means (5) for delivering water to the steam generator (4), measuring the temperature (24, 35) of the steam generator (4), in particular its surface temperature, and / or temperature of the heating element pa generator (4), and / or water vapor temperature, and during normal operation (32), control the heating element of the steam generator (4) and / or water supply (5) so that the measured temperature (24, 35) is maintained between a predetermined lower temperature limit (30) and a predetermined upper temperature limit (31), while the normal mode of operation consists of a first phase and a second phase, and in the first phase (33) with normal operating mode (32), which begins when the specified lower temperature limit is reached ( 30) and continued until the specified upper temperature limit is reached (31), the heating element of the steam generator (4) is turned on, and the water supply (5) supplies water to the steam generator (4) with a given volumetric flow rate, which is a fixed second volumetric flow rate of water or a volumetric flow rate that varies in accordance with the measured temperature (24, 35) in a given second dependence, and in the second phase (34) with normal operating mode (32), starting when the specified upper temperature limit (31) is reached, which continues until to a predetermined lower temperature limit (30), the heating element of the steam generator (4) is turned off or its heating is reduced compared to the first phase (33) of the normal operating mode (32), and the water supply (5) supplies water to the steam generator (4) with the specified volumetric flow rate, which is a fixed third volumetric flow rate of water or volumetric flow rate, which varies in accordance with the measured temperature (24, 35) in a given third dependence, characterized in that the duration (36, 37) of the second phase (28) is measured at normal SG operating mode (26), comparing this measured duration (36, 37) with a predetermined length value, and if the measured duration (36, 37) deviates from a predetermined length value is greater than a predetermined offset value, start operation troubleshooting. 2. The method according to claim 1, characterized in that the heating element of the steam generator (4) and / or water supply (5) is controlled in such a way that the measured temperature (24, 35) fluctuates between a predetermined lower temperature limit (30) and a predetermined upper temperature limit (31). 3. The method according to claim 1, characterized in that during the start-up operation (26) the heating element of the steam generator (4) and / or water supply (5) is controlled in such a way that the measured temperature (24, 35) reaches a value in the temperature range between a predetermined lower temperature limit (30) and a predetermined upper temperature limit (31), in particular, reaches a predetermined lower temperature temperature limit (30) or a predetermined upper temperature limit (31), and the start operation (26) is followed by a normal operating mode (32) . 4. The method according to claim 2, characterized in that during the start-up operation (26) the heating element of the steam generator (4) and / or water supply means (5) is controlled in such a way that the measured temperature (24, 35) reaches a value in the temperature range between a predetermined lower temperature limit (30) and a predetermined upper temperature limit (31), in particular, reaches a predetermined lower temperature limit (30) or a predetermined upper temperature limit (31), and the start operation (26) is followed by a normal mode (32). 5. The method according to claim 3, characterized in that in the first phase (27) of the start-up operation (26), which continues until the predetermined first temperature (29) is reached, the heating element of the steam generator (4) is turned on, and the water supply means (5) are turned off, and in the second phase (28) of the start-up operation (26), which starts when the specified first temperature (29) is reached, the heating element of the steam generator (4) is turned on, and the water supply (5) supplies water to the steam generator (4) with a given volumetric flow rate, which is a fixed first volumetric flow rate or volumetric flow a stroke that changes in accordance with the measured temperature (24, 35) in a given first dependence. 6. The method according to claim 4, characterized in that in the first phase (27) of the start-up operation (26), which continues until the predetermined first temperature (29) is reached, the heating element of the steam generator (4) is turned on, and the water supply means (5) are turned off, and in the second phase (28) of the start-up operation (26), which starts when the specified first temperature (29) is reached, the heating element of the steam generator (4) is turned on, and the water supply (5) supplies water to the steam generator (4) with a given volumetric flow rate, which is a fixed first volumetric flow rate or volumetric flow a stroke that changes in accordance with the measured temperature (24, 35) in a given first dependence. 7. The method according to claim 1, characterized in that the fixed second volumetric flow rate of water is equal to the third volumetric flow rate of water and / or a predetermined second dependence and a predetermined third dependence are equivalent or equal. 8. The method according to any one of claims 1, 5-7, characterized in that the fixed first volumetric flow rate of water is equal to the fixed second and third volumes of water flow rate, and / or a predetermined first dependence, a predetermined second dependence and a predetermined third dependence are equivalent or equal, and / or a predetermined first relationship, a predetermined second relationship, and a predetermined third relationship are part of an agreed core relationship between the measured temperature and volumetric flow rate. 9. The method according to claim 1, characterized in that the predetermined first relationship, and / or the predetermined second relationship, and / or the predetermined third relationship, and / or the underlying relationship is or are directly proportional to the relationship between the measured temperature and volumetric flow rate. 10. The method according to claim 7, characterized in that the predetermined first relationship, and / or the predetermined second relationship, and / or the predetermined third relationship, and / or the underlying relationship is or are directly proportional to the relationship between the measured temperature and volumetric flow rate. 11. The method according to claim 8, characterized in that the predetermined first relationship, and / or the predetermined second relationship, and / or the predetermined third relationship, and / or the underlying relationship is or are directly proportional to the relationship between the measured temperature and the volumetric flow rate. 12. The method according to any one of claims 1 to 7, 9-11, characterized in that the predetermined lower temperature limit (30) is in the range from 115 ° C to 140 ° C, preferably from 120 ° C to 135 ° C, and most preferably about 130 ° C, and the predetermined upper temperature limit (31) is in the range from 140 ° C to 170 ° C, preferably from 145 ° C to 160 ° C, and most preferably about 150 ° C. 13. The method according to claim 8, characterized in that the predetermined lower temperature limit (30) is in the range from 115 ° C to 140 ° C, preferably from 120 ° C to 135 ° C, and most preferably about 130 ° C, and the predetermined upper temperature limit (31) is in the range from 140 ° C to 170 ° C, preferably from 145 ° C to 160 ° C, and most preferably about 150 ° C. 14. The method according to any one of claims 5-7, 9-11, 13, characterized in that the first temperature (29) is equal to or higher than 100 ° C, preferably is in the range from 100 ° C to 130 ° C, and most preferably in the range from 100 ° C to 115 ° C. 15. The method according to claim 8, characterized in that the first temperature (29) is equal to or higher than 100 ° C, preferably is in the range from 100 ° C to 130 ° C, and most preferably in the range from 100 ° C to 115 ° C . 16. The method according to p. 12, characterized in that the first temperature (29) is equal to or higher than 100 ° C, preferably is in the range from 100 ° C to 130 ° C, and most preferably in the range from 100 ° C to 115 ° C . 17. The method according to any one of claims 1 to 7, 9-11, 13, 15, 16, characterized in that the frequency of the temperature cycle (33 and 34) is measured during normal operation (32) and / or the frequency of turning the heating element on and off steam generator (4) in normal operating mode (32), compare this measured frequency with the set frequency value, and if the measured frequency deviates from the set frequency value more than the set deviation value, the troubleshooting operation is started. 18. The method according to claim 8, characterized in that the frequency of the temperature cycle (33 and 34) is measured during normal operation (32) and / or the frequency of on-off of the heating element of the steam generator (4) during normal operation (32), compare this the measured frequency with the set frequency value, and if the measured frequency deviates from the set frequency value more than by the set deviation value, the troubleshooting operation is started. 19. The method according to p. 12, characterized in that the frequency of the temperature cycle (33 and 34) is measured during normal operation (32) and / or the on-off frequency of the heating element of the steam generator (4) during normal operation (32), compare this the measured frequency with the set frequency value, and if the measured frequency deviates from the set frequency value more than by the set deviation value, the troubleshooting operation is started. 20. The method according to any one of claims 1 to 7, 9-11, 13, 15, 16, 18, 19, characterized in that the troubleshooting operation includes at least one of the following steps:
a) giving a warning signal, in particular an indication of a visual warning signal and / or a loud acoustic warning signal, and / or
b) stopping or interrupting the active workflow of the home appliance, and / or
c) turning on the water supply of the water tank (6), which is located in or on the household appliance (1), for receiving water for the steam installation (2), mainly by opening a valve, in particular a magnetic one, installed to open and close the water supply reservoir (6), and / or
d) the commissioning of a spare tank located in or on the household appliance (1) to provide the steam installation with water. 21. The method according to any one of claims 1 to 7, 9-11, 13, 15, 16, 18, 19, characterized in that the water supply (5) for supplying water to the steam generator is a pump (5) or contain a pump ( 5). 22. The method according to item 21, wherein the volumetric flow rate of the water supplied by the pump (5) can be controlled by adjusting the operating frequency of the pump (5) and / or by turning it on. 23. The method according to any one of claims 1 to 7, 9-11, 13, 15, 16, 18, 19, 22, characterized in that the regulation is carried out by at least one electronic control device (8, 10) located in the household appliance (1) or on it. 24. The method according to item 23, wherein the electronic control device (8) is combined with an electronic control device (10) of the household device (1) and / or connected to an electronic control device (10) of the household device (1). 25. The method according to any one of claims 1 to 7, 9-11, 13, 15, 16, 18, 19, 22, 23, characterized in that the household device (1) is a dryer for textiles, in particular a dryer a condensing machine, or a washing machine.

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