Washing machine control method, control device and washing machine

Abstract

The present invention belongs to the technical field of washing machines, and more particularly relates to a control method, a control device, and a washing machine. The washing machine includes a water inlet, a washing machine, and a resin water softening unit. The resin water softening unit is disposed in a water flow path between the water inlet and washing machines, and includes a color-changing resin. The control method includes: obtaining a color depth value of the color-changing resin; determining a timing for performing a reduction treatment on the color-changing resin based on the color depth value; and determining a water inlet method for the laundry washing process based on the timing of performing the reduction treatment. The present invention determines the water softening capacity of the resin water softening unit by monitoring changes in the color depth of the color-changing resin, and further determines the timing for performing the reduction treatment on the resin water softening unit. Furthermore, different water inlet methods can be determined for the laundry washing process at different timings for performing the reduction treatment on the resin water softening unit, thereby ensuring the reduction treatment effect on the color-changing resin while fully satisfying the washing machine's soft water washing function.

Description

Technical Field

[0001] The present invention belongs to the field of washing machines, and in particular relates to a control method and a control device for a washing machine, and a washing machine. Background Art

[0002] With the improvement of living standards and the rapid development of technology, washing machines have become essential household appliances. However, the water quality in most areas is relatively hard. Washing clothes with hard water can easily cause scaling in the washing machine pipes and prevent the detergent from being fully effective. Washing clothes with soft water keeps the pipes clean and unobstructed, preventing unpleasant odors from minerals in the water. Furthermore, soft water reduces the amount of detergent used and makes clothes appear more vibrant.

[0003] Washing machines equipped with resin softeners have been developed in the past. These washers use the softened water produced by the resin softener, which absorbs calcium and magnesium ions from tap water, to wash clothes. However, once the resin softener reaches saturation with calcium and magnesium ions, its ability to soften water decreases or even disappears. Therefore, the timely restoration of the resin softener is closely related to its service life. Summary of the Invention

[0004] In view of this, the present invention provides a control method for a washing machine, the washing machine comprising a water inlet, a washing unit, and a resin water softening unit, the resin water softening unit being provided in a water flow path between the water inlet and the washing unit, the resin water softening unit comprising a color-changing resin, the control method comprising:

[0005] Obtaining a color depth value of the color-changing resin;

[0006] determining a timing for performing a reduction treatment on the color-changing resin according to the color depth value;

[0007] The water inlet mode of the laundry washing process is determined according to the execution timing of the restoration process.

[0008] In some embodiments, determining the timing of performing the reduction treatment on the color-changing resin according to the color depth value includes:

[0009] The washing machine pre-sets a plurality of depth value determination intervals, and different depth value determination intervals correspond to different execution timings of the color-changing resin. The corresponding color-changing resin execution timing is determined according to the depth value determination interval in which the color-changing resin is located.

[0010] In some embodiments, determining the corresponding color-changing resin execution timing according to the depth value determination interval of the color-changing resin includes:

[0011] When the color depth value is within the first depth value determination interval, not performing reduction processing on the color-changing resin;

[0012] When the color depth value is within the second depth value determination interval, performing a reduction treatment on the color-changing resin during a water inlet stage of a laundry washing process;

[0013] When the color depth value is within a third depth value determination interval, performing a reduction treatment on the color-changing resin during a non-clothing washing process;

[0014] The maximum value of the first depth value determination interval is smaller than the minimum value of the second depth value determination interval, and the maximum value of the second depth value determination interval is smaller than the minimum value of the third depth value determination interval.

[0015] In some embodiments, the reducing treatment of the color-changing resin during the soaking stage of the laundry process includes:

[0016] The color-changing resin is subjected to reduction treatment during the rinsing and water-injection stage of the laundry process.

[0017] In some embodiments, when the color-changing resin is subjected to a reduction treatment during the rinsing water inlet stage of a laundry washing process, determining the water inlet mode of the laundry washing process according to the execution timing of the reduction treatment includes:

[0018] During the main wash water inlet stage of the laundry washing process, the water in the water inlet is controlled to at least partially flow into the washing part after being softened by the resin softening part;

[0019] During the rinsing water inlet stage of the laundry washing process, the water in the water inlet is controlled to perform a reduction treatment on the color-changing resin and then flow into the washing part.

[0020] In some embodiments, when the color-changing resin is not subjected to reduction treatment, determining the water inlet mode of the laundry washing process according to the timing of executing the reduction treatment includes:

[0021] During the main wash water inlet stage and the rinse water inlet stage of the laundry washing process, the water in the water inlet is controlled to at least partially flow into the washing part after being softened by the resin softening part.

[0022] In some embodiments, when the color-changing resin is subjected to a reduction treatment during a non-clothing washing process, the water in the water inlet is controlled to be discharged from the washing section after the color-changing resin is subjected to the reduction treatment.

[0023] In some embodiments, when the color depth value is greater than the maximum value of the third depth value determination interval, the user is reminded to replace the color-changing resin.

[0024] The second aspect of the present invention proposes a control device, which includes one or more processors and a non-temporary computer-readable storage medium storing program instructions. When the one or more processors execute the program instructions, the one or more processors are used to implement any washing machine control method proposed in the first aspect of the present invention.

[0025] A third aspect of the present invention provides a washing machine, which operates according to any washing machine control method provided in the first aspect of the present invention, or includes the control device provided in the second aspect of the present invention.

[0026] Compared with existing technologies, the present invention primarily offers the following advantages: by monitoring changes in the color depth of the color-changing resin, the present invention determines the water softening capacity of the resin softening unit, thereby determining the timing for performing reduction treatment on the unit. Furthermore, different water inlet methods can be determined based on the timing of performing reduction treatment on the unit during the laundry process, ensuring the effective reduction treatment of the color-changing resin while also satisfying the washing machine's soft water washing function. Furthermore, the water after the resin softening unit's reduction treatment can be recycled and reused, saving water. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0028] The structures, proportions, sizes, etc. illustrated in this specification are intended only to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall still fall within the scope of the technical contents disclosed herein.

[0029] Figure 1 This is one of the control flow charts of a washing machine according to an exemplary embodiment.

[0030] Figure 2 FIG. 1 is a graph showing a trend of changes in the color depth value of a color-changing resin along with the water softening capacity of the color-changing resin according to an exemplary embodiment.

[0031] Figure 3 This is a second control flow chart of a washing machine according to an exemplary embodiment.

[0032] Figure 4is a schematic diagram of a washing machine according to an exemplary embodiment.

[0033] The reference numerals are as follows:

[0034] 1. Housing; 2. Door; 3. Inner drum; 4. Drain pump; 5. Resin softener; 6. Color depth detection device; 7. First water outlet pipe; 8. Main water inlet pipe; 9. First water outlet control valve; 10. Second water outlet pipe; 11. Second water outlet control valve. DETAILED DESCRIPTION

[0035] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. Obviously, the embodiments described are only a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0036] The terms used in the embodiments of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The singular forms "a," "the," and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise. "A plurality" generally includes at least two, but does not exclude the inclusion of at least one.

[0037] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0038] It should also be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or system. In the absence of further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the product or system comprising the element.

[0039] According to an exemplary embodiment, a control method for a washing machine is proposed. The washing machine of this embodiment may have only a laundry washing function, and may also have a laundry drying function or other laundry care functions. The washing machine includes a water inlet, a washing part, and a resin water softening part 5. The resin water softening part 5 is provided in a water flow path between the water inlet and the washing part, and the resin water softening part 5 includes a color-changing resin. Figure 4 The washing machine shown in the diagram includes a housing 1, within which are located the washing unit, water inlet, and resin water softening unit 5. The washing unit comprises an outer tub and an inner tub 3 rotatably disposed within the outer tub. A door 2 is provided on the housing 1 at a position corresponding to the opening of the inner tub 3. The resin water softening unit 5 and water inlet are located between the outer tub and the housing 1. A drain pipe is provided at the bottom of the outer tub, and a drain pump 4 is mounted on the drain pipe.

[0040] The water inlet includes a main water inlet pipe 8, which connects the washing machine's external water supply line to the resin water softening section 5. The resin water softening section 5 includes a resin water softening zone and a regeneration salt reduction zone, with the color-changing resin located in the resin water softening zone. The main water inlet pipe 8 is connected to the resin water softening zone and the regeneration salt reduction zone, respectively. The resin water softening zone is used to soften the water flowing into it from the main water inlet pipe 8. The regeneration salt reduction zone is connected to the resin water softening zone. Water in the main water inlet pipe 8 enters the regeneration salt reduction zone to form regenerated brine. The regenerated brine flows into the resin water softening zone, reducing the color-changing resin in the resin water softening zone to restore the color-changing resin's water softening capacity. The resin water softening zone includes a soft water outlet and a reduced water outlet. The soft water outlet is provided with a first water outlet pipe 7, and the reduced water outlet is provided with a second water outlet pipe 10. The softened water in the resin soft water zone flows out through a first water outlet pipe 7, which is connected to the inner drum 3. Preferably, a spray device is provided at the outlet end of the first water outlet pipe 7, so that the softened water flowing out of the first water outlet pipe 7 is sprayed into the inner drum 3 through the spray device. The first water outlet pipe 7 is provided with a first water outlet control valve 9, which controls the flow of water in the first water outlet pipe 7. The water after the reduction treatment in the resin soft water zone flows out through a second water outlet pipe 10, which is connected to the inner drum 3. The washing machine also includes a color depth detection device 6, which is located near the color-changing resin and is used to detect the color depth value of the color-changing resin. The color depth detection device 6 is, for example, a spectrophotometer.

[0041] Figure 1 is one of the control flow charts of a washing machine according to an exemplary embodiment, referring to Figure 1 , the control method of the washing machine includes the following steps:

[0042] S11, obtaining the color depth value of the color-changing resin;

[0043] S12, determining the execution time of reduction treatment on the color-changing resin according to the color depth value;

[0044] S13. Determine a water inlet method for the laundry washing process according to the execution timing of the reduction process.

[0045] In this embodiment, the color-changing resin has a characteristic that the color depth changes as the water softening ability of the color-changing resin changes. Figure 2 The graph shows the trend of the color depth value of the color-changing resin changing with the water softening ability of the color-changing resin. Figure 2 When the color depth of the color-changing resin is between 0 and 15, the color depth is very shallow, and the water softening capacity of the color-changing resin is approximately 90%-100%; when the color depth value of the color-changing resin is between 15 and 30, the color depth is relatively shallow, and the water softening capacity of the color-changing resin is approximately 70%-85%; when the color depth value of the color-changing resin is between 30 and 45, the color depth is relatively deep, and the water softening capacity of the color-changing resin is approximately 50%; when the color depth value of the color-changing resin is between 45 and 60, the color depth is very deep, and the water softening capacity of the color-changing resin is relatively weak. Therefore, by obtaining the color depth value of the color-changing resin, the strength of the color-changing resin's water softening capacity can be determined, and then the timing of performing reduction treatment on the color-changing resin can be determined to ensure the water softening capacity of the color-changing resin. Furthermore, the amount of impurities absorbed by the color-changing resin can be determined based on the color depth of the color-changing resin. The lighter the color of the color-changing resin, the fewer impurities it absorbs. In this case, the water discharged after softening the color-changing resin can be reused, for example, for the main wash and / or rinse water in the laundry process. The darker the color of the color-changing resin, the more impurities it absorbs. In this case, the water discharged after softening the color-changing resin cannot be used for the main wash or rinse water. Therefore, the water intake method for the laundry process can be determined based on the timing of the color-changing resin treatment, allowing for the recycling and reuse of water containing fewer impurities after the color-changing resin is reduced, thereby saving water resources.

[0046] In some embodiments, the timing of executing the reduction treatment of the color-changing resin is determined according to the color depth value, including: the washing machine pre-sets multiple depth value judgment intervals, different depth value judgment intervals correspond to different execution timings of the color-changing resin, and the corresponding color-changing resin execution timing is determined according to the depth value judgment interval in which the color-changing resin is located.

[0047] Specifically, when the color depth value is in the first depth value judgment interval, the color-changing resin is not reduced; when the color depth value is in the second depth value judgment interval, the color-changing resin is reduced during the water intake stage of the clothing washing process; when the color depth value is in the third depth value judgment interval, the color-changing resin is reduced during the non-clothing washing process; the maximum value of the first depth value judgment interval is less than the minimum value of the second depth value judgment interval, and the maximum value of the second depth value judgment interval is less than the minimum value of the third depth value judgment interval.

[0048] Reference Figure 1 The color depth value of the color-changing resin is shown as a trend chart of changes in the water softening ability of the color-changing resin. For example, the interval of color depth values ​​0-15 is defined as the first depth value judgment interval, the interval of color depth values ​​15-30 is defined as the second depth value judgment interval, the interval of color depth values ​​30-45 is defined as the third depth value judgment interval, and the interval of color depth values ​​45-60 is defined as the fourth depth value judgment interval.

[0049] Different depth value determination intervals correspond to different execution timings of the color-changing resin. For example, when the color depth of the color-changing resin is in the first depth value determination interval, the water softening ability of the color-changing resin is very strong, and the color-changing resin does not need to be reduced. When the color depth of the color-changing resin is in the second depth value determination interval, the water softening ability of the color-changing resin is relatively strong, and the water after the color-changing resin is reduced contains fewer impurities and can be further used as main wash water and / or rinse water in the clothing washing process. Therefore, the color-changing resin can be reduced during the water intake stage of the clothing washing process to restore the water softening ability of the color-changing resin. When the color depth value of the color-changing resin is in the third depth value determination interval, the water softening ability of the color-changing resin is average, and the water after the color-changing resin is reduced contains more impurities. This part of water cannot be used in the clothing washing process, so the color-changing resin can be reduced during non-clothing washing processes. When the color depth value of the color-changing resin is in the fourth depth value interval, the water softening ability of the color-changing resin is very weak and cannot be restored by reduction treatment. At this time, a prompt message is sent to the user to remind the user to replace the color-changing resin.

[0050] In some embodiments, the color-changing resin is reduced during the water inlet stage of the laundry process, including: reducing the color-changing resin during the rinsing water inlet stage of the laundry process, at which time the main wash water may include water softened by the resin softening unit 5, and the rinsing water may include water after the color-changing resin has been reduced, that is, during the main wash water inlet stage of the laundry process, the water in the water inlet is controlled to at least partially flow into the washing unit after being softened by the resin softening unit 5; during the rinsing water inlet stage of the laundry process, the water in the water inlet is controlled to flow into the washing unit after being reduced by the color-changing resin. Figure 4In the washing machine, during the main wash water inlet phase, the second water outlet control valve 11 is closed and the first water outlet control valve 9 is opened. Water is introduced into the resin softening zone in the resin softening unit 5 through the main water inlet pipe 8. The incoming tap water is softened in the resin softening zone and then enters the inner drum 3 through the first water outlet pipe 7 for the main wash. During the rinse water inlet phase, the second water outlet control valve 11 is opened and the first water outlet control valve 9 is closed. Water is introduced into the resin regeneration salt reduction zone in the resin softening unit 5 through the main water inlet pipe 8. The tap water enters the regeneration salt reduction zone to produce regenerated brine. The regenerated brine then reduces the color-changing resin. The reduced water then passes through the second water outlet pipe 10 to rinse the clothes inside the washing machine.

[0051] This embodiment effectively improves laundry washing efficiency and reduces detergent usage by introducing water softened by the resin softening unit 5 during the main wash inlet stage. Furthermore, when water heating is required during the main wash, it effectively reduces scale buildup and lowers washing machine maintenance costs. Furthermore, since main wash water consumption is relatively low, introducing softened water during the main wash inlet stage saves on soft water usage and avoids further weakening the softening capacity of the color-changing resin. Because the water treated with the resin after reduction contains fewer impurities when the color depth of the color-changing resin is within the second depth value determination range, this water can be used directly for rinsing, ensuring effective rinsing while conserving water.

[0052] In some embodiments, when the color-changing resin is not subjected to reduction treatment, the color depth value of the color-changing resin is in the first depth value determination interval, and the color-changing resin has a strong water softening ability. At this time, the water inlet method of the laundry process is determined according to the execution timing of the reduction treatment, including: in the main wash water inlet stage and the rinse water inlet stage of the laundry process, the water in the water inlet part is controlled to at least partially flow into the washing part after being softened by the resin softening part 5. Figure 4 In the washing machine, during the main wash water inlet and rinse water inlet stages, the second water outlet control valve 11 is closed, the first water outlet control valve 9 is opened, and water flows into the resin soft water area of ​​the resin soft water part 5 through the main water inlet pipe 8. The tap water entering is softened in the resin soft water area and then enters the inner drum 3 through the first water outlet pipe 7 to wash the clothes.

[0053] This embodiment uses soft water for the main wash and rinse, which can effectively improve the washing and rinsing effects, reduce the amount of detergent used, and reduce the generation of scale. At the same time, soft water washing can make the foam rich, which is conducive to maintaining the original shape of the clothes. The clothes will also become more fluffy, bright, white, and durable.

[0054] In some embodiments, when the color-changing resin is reduced during a non-clothing washing process, the color of the color-changing resin is in the third depth value determination interval, and the softening water capacity of the color-changing resin is average. At this time, the water after the color-changing resin is reduced cannot be used in the clothing washing process and will contaminate the clothes. Therefore, it is necessary to control the water in the water inlet to reduce the color-changing resin before discharging it from the washing part. Figure 4 In the washing machine, during the non-clothing washing process, the second water outlet control valve 11 is opened and the first water outlet control valve 9 is closed. Water is fed into the regeneration salt reduction zone in the resin softening part 5 through the main water inlet pipe 8. Tap water enters the regeneration salt reduction zone to produce regeneration brine. The regeneration brine reduces the color-changing resin. At this time, there are more impurities in the reduced water, and the reduced water is directly discharged through the drainage pump 44.

[0055] In some embodiments, when the color depth value is greater than the maximum value of the third depth value judgment interval, the color depth value of the color-changing resin is in the fourth depth value judgment interval. At this time, the ability of the color-changing resin to soften water cannot be restored by reducing the color-changing resin. At this time, the user is reminded to replace the color-changing resin.

[0056] Figure 3 is a control flow chart of a washing machine according to an exemplary embodiment. Figure 3 , the control method of the washing machine includes the following steps:

[0057] S31: Start the washing machine;

[0058] S32: Detecting the color depth value of the color-changing resin using a spectrophotometer;

[0059] S33: determining a depth value determination interval of the color-changing resin according to the color depth value of the color-changing resin;

[0060] S34: determining that the color depth is within the first depth value determination interval, and controlling the water in the water inlet during the main wash and rinse stages to flow at least partially into the washing section after being softened by the resin softening section 5;

[0061] S35, determining that the color depth is within the second depth value determination interval, and controlling the water in the water inlet to at least partially flow into the washing section after being softened by the resin softening section 5 during the main wash water inlet stage;

[0062] S36, rinsing water inlet stage: controlling the water in the water inlet to reduce the color-changing resin and then flow into the washing section;

[0063] S37, determining that the color depth is within the third depth value determination interval, controlling the water in the water inlet to perform a reduction treatment on the color-changing resin and then discharge it from the washing section;

[0064] S38: Determine that the color depth is in the fourth depth value determination range, and remind the user to replace the color-changing resin.

[0065] According to an exemplary embodiment, this embodiment proposes a control device, which includes one or more processors and a non-transitory computer-readable storage medium storing program instructions. When the one or more processors execute the program instructions, the one or more processors are used to implement any washing machine control method proposed in the above embodiments.

[0066] According to an exemplary embodiment, this embodiment provides a washing machine, referring to Figure 4 The washing machine operates according to any of the control methods for washing machines proposed in the above embodiments, or includes the control device proposed in the above embodiments. The structure of the washing machine has been described in detail in the embodiments of the washing machine control method and will not be repeated here.

[0067] While the exemplary embodiments of the present disclosure have been specifically illustrated and described above, it should be understood that the present disclosure is not limited to the detailed structures, configurations, or implementations described herein; rather, the present disclosure is intended to encompass various modifications and equivalent configurations within the spirit and scope of the appended claims.

Claims

1. A method for controlling a washing machine, characterized in that: The washing machine includes a water inlet, a washing part, and a resin water softening part, wherein the resin water softening part is provided in a water flow path between the water inlet and the washing part, and the resin water softening part includes a color-changing resin. The control method includes: Obtaining a color depth value of the color-changing resin; determining a timing for performing a reduction treatment on the color-changing resin according to the color depth value; determining a water inlet method for a laundry washing process according to a timing for executing the restoration process; The method comprises: determining the execution timing of the color-changing resin reduction treatment according to the color depth value, comprising: presetting a plurality of depth value determination intervals on the washing machine, wherein different depth value determination intervals correspond to different execution timings of the color-changing resin, and determining the corresponding color-changing resin execution timing according to the depth value determination interval in which the color-changing resin is located; The step of determining the corresponding color-changing resin execution timing according to the depth value determination interval of the color-changing resin includes: When the color depth value is within the first depth value determination interval, not performing reduction processing on the color-changing resin; When the color depth value is within the second depth value determination interval, performing a reduction treatment on the color-changing resin during a water inlet stage of a laundry washing process; When the color depth value is within a third depth value determination interval, performing a reduction treatment on the color-changing resin during a non-clothing washing process; The maximum value of the first depth value determination interval is smaller than the minimum value of the second depth value determination interval, and the maximum value of the second depth value determination interval is smaller than the minimum value of the third depth value determination interval.

2. The control method of the washing machine according to claim 1, characterized in that: The reduction treatment of the color-changing resin during the water inlet stage of the laundry process includes: The color-changing resin is subjected to reduction treatment during the rinsing and water-injection stage of the laundry process.

3. The control method of the washing machine according to claim 2, characterized in that: When the color-changing resin is subjected to a reduction treatment during the rinsing water inlet stage of the laundry process, the method of determining the water inlet mode of the laundry process according to the execution timing of the reduction treatment includes: During the main wash water inlet stage of the laundry washing process, the water in the water inlet is controlled to at least partially flow into the washing part after being softened by the resin softening part; During the rinsing water inlet stage of the laundry washing process, the water in the water inlet is controlled to perform a reduction treatment on the color-changing resin and then flow into the washing part.

4. The control method of the washing machine according to claim 1, characterized in that: When the color-changing resin is not subjected to reduction treatment, determining the water inlet mode of the laundry washing process according to the execution timing of the reduction treatment includes: During the main wash water inlet stage and the rinse water inlet stage of the laundry washing process, the water in the water inlet is controlled to at least partially flow into the washing part after being softened by the resin softening part.

5. The control method of the washing machine according to claim 1, characterized in that: When the color-changing resin is subjected to reduction treatment in a non-clothing washing process, the water in the water inlet is controlled to be discharged from the washing part after the color-changing resin is subjected to reduction treatment.

6. The control method of the washing machine according to claim 1, characterized in that: When the color depth value is greater than the maximum value of the third depth value determination interval, the user is reminded to replace the color-changing resin.

7. A control device, characterized in that: It includes one or more processors and a non-transitory computer-readable storage medium storing program instructions. When the one or more processors execute the program instructions, the one or more processors are used to implement the control method of the washing machine according to any one of claims 1 to 6.

8. A washing machine, characterized in that: The washing machine operates according to the control method for a washing machine according to any one of claims 1 to 6, or includes the control device according to claim 7.

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