Steam generator control method and control device

Abstract

The present invention provides a control method and control device for a steam generator. The control method for the steam generator mainly includes: in the steam generation stage, controlling the number of times the water pump pumps water to reach a preset first target number according to a precise water pumping rule. Controlling the number of times the water pump pumps water to reach a preset second target number according to a modified water pumping rule. Through the embodiments provided in the present application, pumping water according to the precise water pumping rule can achieve the goal of immediately pumping new water when the water is completely dried up after one pumping, thereby achieving better continuity of steam supply; according to the modified water pumping rule, water volume errors caused by, for example, aging of the water pump can be corrected to avoid overflowing, thereby improving the cooking speed while improving the continuity of the steam supply and achieving fast cooking.

Description

Technical Field

[0001] The present invention relates to the technical field of steam generator control, and in particular to a steam generator control method and a control device. Background Art

[0002] A steam generator is a device that produces steam. It heats the cavity of cooking devices with steaming functions (such as electric steamers and ovens) to achieve steam cooking. Conventional steam generators, on the other hand, pump water at a specific time based on the temperature measured by a sensor inside the cavity.

[0003] However, due to the accuracy of the temperature sensor itself and the scaling problem after long-term use, the temperature collected by the temperature sensor will be inaccurate, resulting in excessive water pumping and overflow. Usually, a higher pump water starting temperature is set to avoid overflow, but a higher pump water starting temperature will increase the dry burning time, reduce the steam output time, and reduce the service life. Summary of the Invention

[0004] In view of the shortcomings of the existing methods, the present application provides a control method and a control device for a steam generator to solve the technical problem of water overflow in the prior art.

[0005] In the first aspect, an embodiment of the present application provides a control method for a steam generator, wherein the steam generator includes a shell for generating steam and a water pump; a cavity is provided in the shell, and the water pump is used to pump water into the cavity; the control method includes: in the steam generation stage, controlling the water pump to pump water a preset first target number of times by using a precise water pumping rule; controlling the water pump to pump water a preset second target number of times by using a modified water pumping rule to avoid overflow; wherein the first target number is greater than the second target number, the first target number is greater than or equal to two, and less than a preset limit number, and the second target number is greater than or equal to one; the limit number is the ratio of the volume of the cavity to the water pumping amount of a single precise water pumping rule; the sum of the first target number and the second target number reaches a preset stop number.

[0006] As an optional implementation method, the method of controlling the water pump to pump water a preset number of times using precise pumping rules includes: controlling the water pump to start a preset pumping time; accumulating the first number once after a preset first interval time; if the accumulated first number is less than the first target number, repeating the step of controlling the water pump to start a preset pumping time until the accumulated first number is equal to the first target number.

[0007] As an optional implementation method, the method of controlling the water pump to pump water a preset number of times by modifying the pumping rule includes: controlling the water pump to start a preset pumping time; accumulating the second number once after a preset second interval time; if the accumulated second number is less than the second target number, repeating the step of controlling the water pump to start a preset pumping time until the accumulated second number is equal to the second target number.

[0008] As an optional implementation manner, the control method further includes: controlling the water pump to pump water a number of times to reach a preset third target number of times according to a supplementary pumping rule.

[0009] As an optional implementation manner, the number of times the water pump is controlled to pump water by the supplementary pumping rule reaches a preset third target number, including: after the water pump is controlled to pump water by the precise pumping rule at any time, controlling the water pump to start for a preset pumping time; after a preset third interval time, accumulating the third number once; repeating the step of controlling the water pump to start for a preset pumping time after the water pump is controlled to pump water by the precise pumping rule at any time, until the accumulated third number is equal to the third target number.

[0010] As an optional implementation manner, the number of times the water pump is controlled to pump water by the supplementary pumping rule reaches a preset third target number, including: after any time the water pump is controlled to pump water by the modified pumping rule, controlling the water pump to start for a preset pumping time; after a preset third interval time, accumulating the third number once; repeating the step of controlling the water pump to start for a preset pumping time after any time the water pump is controlled to pump water by the precise pumping rule, until the accumulated third number is equal to the third target number.

[0011] In the second aspect, an embodiment of the present application provides a control device for a steam generator, wherein the steam generator includes a cavity for generating steam, and a water pump for pumping water into the cavity; the control device includes: a water pumping control unit, which is used to control the water pump to pump water a preset first target number of times according to a precise water pumping rule during the steam generation stage; and to control the water pump to pump water a preset second target number of times according to a modified water pumping rule to avoid overflow; wherein the first target number is greater than the second target number, the first target number is greater than or equal to two, and less than a preset limit number, and the second target number is greater than or equal to one; the limit number is the ratio of the volume of the cavity to the water pumping volume of a single precise water pumping rule; the sum of the first target number and the second target number reaches a preset stop number.

[0012] As an optional implementation, the control unit is specifically used to: control the water pump to start for a preset pumping time; accumulate a first number after a preset first interval time; if the accumulated first number is less than the first target number, repeat the step of controlling the water pump to start for a preset pumping time until the accumulated first number is equal to the first target number.

[0013] As an optional implementation, the control unit is specifically used to: control the water pump to start for a preset pumping time; accumulate a second number after a preset second interval time; if the accumulated second number is less than the second target number, repeat the step of controlling the water pump to start for a preset pumping time until the accumulated second number is equal to the second target number.

[0014] As an optional implementation manner, the control device further includes: a supplementary control unit, configured to control the water pump to pump water a number of times to reach a preset third target number of times according to a supplementary pumping rule.

[0015] The present application provides a control method and a control device for a steam generator. The technical solutions provided by the embodiments of the present application bring at least the following beneficial effects:

[0016] Pumping water according to the precise pumping rules can ensure that new water can be pumped in immediately when the water is completely dried up after one pumping, thereby achieving better continuity of steam supply; according to the corrected pumping rules, water volume errors caused by, for example, water pump aging can be corrected to avoid overflow, thereby improving the continuity of steam supply and increasing cooking speed to achieve fast cooking.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 A schematic flow chart of a steam generator control method provided in an embodiment of the present application;

[0020] Figure 2 A flow chart of a method for controlling a steam generator according to an embodiment of the present invention, wherein a precise pumping rule is used to control a water pump to pump water to a preset first target number of times;

[0021] Figure 3A flow chart of a steam generator control method according to an embodiment of the present application for controlling a water pump to pump water a predetermined second target number of times by modifying a water pumping rule. DETAILED DESCRIPTION

[0022] The present application is described in detail below. Examples of embodiments of the present application are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. In addition, if the detailed description of the known technology is not necessary for the features of the present application shown, it will be omitted. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0023] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as generally understood by those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0024] It will be understood by those skilled in the art that, unless otherwise stated, the singular forms "a", "an" and "the" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the specification of this application refers to the presence of the features, elements and / or components, but does not exclude the presence or addition of one or more other features, elements, components and / or groups thereof. It should be understood that when we say that an element is "connected" to another element, it can be directly connected to the other element, or there may be intermediate elements. In addition, the "connection" used here may include wireless connection.

[0025] like Figure 1 As shown, an embodiment of the present application provides a method for controlling a steam generator, wherein the steam generator includes a housing for generating steam and a water pump; a cavity is provided in the housing, and the water pump is used to pump water into the cavity; the method for controlling the steam generator mainly includes steps S1-S2:

[0026] Step S1: During the steam generation stage, the water pump is controlled to pump water a certain number of times according to a precise pumping rule to reach a preset first target number of times.

[0027] Step S2: controlling the water pump to pump water a number of times to reach a preset second target number of times using the modified pumping rule.

[0028] Among them, the first target number is greater than the second target number, the first target number is greater than or equal to two and less than the preset limit number, and the second target number is greater than or equal to one; the limit number is the ratio of the volume of the cavity to the pumping volume of a single precise pumping rule; the sum of the first target number and the second target number reaches the preset stop number.

[0029] In some possible embodiments, the steam generator further includes a controller connected to and controlling the water pump. Precise pumping rules and corrected pumping rules are pre-set. The precise pumping rule enables immediate re-injection of fresh water when the water is completely dried up after a single pumping; the corrected pumping rule is used to correct for water volume errors. The first target number and the second target number can be set based on a user-set cooking time. The precise pumping rule can be used first to control the water pumping, followed by the corrected pumping rule; alternatively, the corrected pumping rule can be used first to control the water pumping, followed by the precise pumping rule.

[0030] Optionally, the second target number is one.

[0031] Optionally, the first target number is four and the second target number is one.

[0032] Optionally, the first target number is five and the second target number is one.

[0033] Through the control method of the steam generator provided in the embodiment of the present application, pumping water according to precise pumping rules can achieve better continuity of steam supply; according to the corrected pumping rules, water volume errors caused by, for example, water pump aging can be corrected to avoid overflow, thereby improving the continuity of steam supply and increasing the cooking speed to achieve fast cooking.

[0034] like Figure 2 As shown, as an optional implementation method, the aforementioned step S1 controls the water pump to pump water a number of times to reach a preset first target number using a precise pumping rule, including steps S11-S13:

[0035] Step S11: Control the water pump to start for a preset pumping time;

[0036] Step S12: After a preset first interval, accumulate the first number once;

[0037] Step S13: If the accumulated first number is less than the first target number, the step of controlling the water pump to start for a preset pumping time is repeated until the accumulated first number is equal to the first target number.

[0038] Based on the foregoing embodiments, some possible embodiments are provided, in which the pumping time is a preset value and can be set according to the pumping power of the water pump and the capacity of the cavity, so that there is a sufficient amount of water in the cavity after the preset pumping time.

[0039] The first interval duration is obtained through a large number of experiments. Specifically, the timing starts from the time when water is pumped into the cavity and ends when the water pumped in that time is completely dried up, so as to obtain the first heating duration. The judgment standard for complete drying up can be that the temperature in the cavity reaches a preset first drying temperature, for example, the first drying temperature is 115 degrees Celsius. The above process is repeated many times to obtain a large amount of first heating duration data, for example, 1000 first heating durations are obtained. As the first standard time required for full drying; where X1 is the average of the first heating time, The difference between the first standard time and the aforementioned water pumping time is taken as the first interval time.

[0040] like Figure 3 As shown, as an optional implementation manner, the aforementioned step S2 uses the modified pumping rule to control the water pump to pump water a number of times to reach a preset second target number of times, including steps S21-S23:

[0041] Step S21: Control the water pump to start for a preset pumping time;

[0042] Step S22: After a preset second interval, accumulate the second number once;

[0043] Step S23: If the accumulated second number of times is less than the second target number of times, the step of controlling the water pump to start for a preset pumping time is repeatedly executed until the accumulated second number of times is equal to the second target number of times.

[0044] Based on the above embodiments, some possible embodiments are provided, and the second interval duration is obtained by a large number of experiments. Specifically, the timing is started from pumping water into the cavity, and the timing is ended when the water pumped in the cavity is completely dried up under the condition that there is a water amount error. The judgment standard when the water is completely dried up under the condition that there is a water amount error can be that the temperature in the cavity reaches a preset second drying temperature, for example, the second drying temperature is 125 degrees Celsius. The above process is repeated many times to obtain a large amount of second heating duration data, for example, 1000 second heating durations are obtained to obtain the second heating duration data. As the second standard time required for complete drying; wherein X2 is the average value of the second heating time, The difference between the second standard time and the aforementioned water pumping time is taken as the second interval time.

[0045] As an optional implementation manner, the method for controlling the steam generator further includes the steps of:

[0046] The water pump is controlled to pump water a number of times according to the supplementary pumping rule to reach a preset third target number of times.

[0047] Based on the above embodiments, some possible embodiments are provided. Since the set cooking time may not be an integer of the precise pumping rule control time and the corrected pumping rule control time, it is necessary to supplement the cooking time, and the supplementary pumping rule is used to supplement the cooking time.

[0048] As an optional implementation manner, in the aforementioned steps, controlling the water pump to pump water a number of times according to the supplementary pumping rule to reach a preset third target number of times includes:

[0049] After the water pump is pumped using precise pumping rules at any time, the water pump is controlled to start for a preset pumping time;

[0050] After the preset third interval time, the third number is accumulated once;

[0051] Repeat the step of controlling the water pump to start for a preset pumping time after the water pump is pumped using the precise pumping rule any time, until the accumulated third time number equals the third target time number.

[0052] As an optional implementation manner, in the aforementioned steps, controlling the water pump to pump water a number of times according to the supplementary pumping rule to reach a preset third target number of times includes:

[0053] After the water pump is controlled to pump water using the modified pumping rule at any time, the water pump is controlled to start for a preset pumping time;

[0054] After the preset third interval time, the third number is accumulated once;

[0055] Repeat the step of controlling the water pump to start for a preset pumping time after the water pump is pumped using the precise pumping rule any time, until the accumulated third time number equals the third target time number.

[0056] Based on the above embodiments, some possible embodiments are provided. The cooking time is pre-set, the duration of a single precise pumping rule control and the duration of a single corrected pumping rule control are known data, the number of precise pumping rule controls and the number of corrected pumping rule controls are known after the cooking time is set, the difference between the cooking time and the precise pumping rule control and corrected pumping rule control times is the replenishment time, and the difference between the replenishment time and the aforementioned pumping time is used as the third interval time. Typically, the replenishment time only needs to be performed once, that is, the third target number of times can be once. The replenishment rule control pump can be performed after either the precise pumping rule control pump or the corrected pumping rule control pump.

[0057] In a specific embodiment, the heating power of the steam generator is 1200 watts, the pumping time is 3 seconds, the first interval time is 63 seconds, that is, the precise pumping rule controls the pumping time of 66 seconds; the second interval time is 82 seconds, that is, the corrected pumping rule controls the pumping time of 85 seconds.

[0058] If five correction pumping rules are used to control the pumping time, that is, 425 seconds, then the control method provided by the embodiment of the present application can be used to control the pumping time by four precise pumping rules, one correction pumping rule is used to control the pumping time, another precise pumping rule is used to control the pumping time, and finally a 10-second supplementary pumping rule is used to control the pumping time, that is, the third interval time is 7 seconds.

[0059] The modified pumping rule, which controls the water pump for 85 seconds, produces steam for 66 seconds, with the remaining time being heating. This means that 330 seconds of the pumping time controlled by the five modified pumping rules is dedicated to steam production. However, using the control method provided in this embodiment, the steam production time is reduced to 406 seconds, a 23% improvement, thus improving cooking efficiency.

[0060] In another specific embodiment, the heating power of the steam generator is 1800 watts, the pumping time is 5 seconds, the first interval time is 67 seconds, that is, the precise pumping rule controls the pumping time of 72 seconds; the second interval time is 90 seconds, that is, the corrected pumping rule controls the pumping time of 95 seconds.

[0061] If five correction pumping rules are used to control the pumping time, that is, 475 seconds, then the control method provided by the embodiment of the present application can be used to control the pumping time by four precise pumping rules, one correction pumping rule is used to control the pumping time, another precise pumping rule is used to control the pumping time, and finally a 20-second supplementary pumping rule is used to control the pumping time, that is, the third interval time is 15 seconds.

[0062] The modified pumping rule, which controls the water pump for 95 seconds, provides steam for 72 seconds, with the remaining time being heating. This means that 360 seconds of the pumping time controlled by the five modified pumping rules is dedicated to steam production. However, using the control method provided in this embodiment, the steam production time is reduced to 452 seconds, a 25% improvement, thus improving cooking efficiency.

[0063] It should be understood that although Figures 1 to 3 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. In addition, Figures 1 to 3At least part of the steps may include multiple steps or multiple stages. These steps or stages are not necessarily performed at the same time, but can be performed at different times. The order of execution of these steps or stages is not necessarily one by one, but can be performed in turn or alternately with other steps or at least part of the steps or stages in other steps.

[0064] It can be understood that the same / similar parts between the various embodiments of the above method in this specification can be referred to each other, and each embodiment focuses on the differences from other embodiments. For related parts, please refer to the description of other method embodiments.

[0065] Based on the same inventive concept, an embodiment of the present application provides a control device for a steam generator, the steam generator comprising a cavity for generating steam, and a water pump for pumping water into the cavity; the control device of the steam generator comprises a water pumping control unit, which is used to control the number of water pumping times of the water pump to reach a preset first target number according to a precise water pumping rule during the steam generation stage; and to control the number of water pumping times of the water pump to reach a preset second target number according to a modified water pumping rule to avoid overflow; wherein, the first target number is greater than the second target number, the first target number is greater than or equal to two, and less than the preset limit number, and the second target number is greater than or equal to one; the limit number is the ratio of the volume of the cavity to the water pumping volume of a single precise water pumping rule; the sum of the first target number and the second target number reaches a preset stop number.

[0066] As an optional implementation, the control unit is specifically used to: control the water pump to start for a preset pumping time; accumulate a first number after a preset first interval time; if the accumulated first number is less than the first target number, repeat the steps of controlling the water pump to start for a preset pumping time until the accumulated first number is equal to the first target number.

[0067] As an optional implementation, the control unit is specifically used to: control the water pump to start for a preset pumping time; accumulate a second number after a preset second interval time; if the accumulated second number is less than the second target number, repeat the steps of controlling the water pump to start for a preset pumping time until the accumulated second number is equal to the second target number.

[0068] As an optional implementation, the control device further includes a supplementary control unit, which is used to control the water pump to pump water a number of times to reach a preset third target number according to the supplementary pumping rule.

[0069] As an optional implementation method, the supplementary control unit is specifically used to: control the water pump to start for a preset pumping time after the water pump is controlled to pump water any time according to the precise pumping rules; accumulate the third number once after the preset third interval time; repeat the steps of controlling the water pump to start for a preset pumping time after the water pump is controlled to pump water any time according to the precise pumping rules, until the accumulated third number is equal to the third target number.

[0070] As an optional implementation method, the supplementary control unit is specifically used to: control the water pump to start for a preset pumping time after any time the water pump is controlled to pump water using the modified pumping rules; accumulate a third number after a preset third interval; and repeat the steps of controlling the water pump to start for a preset pumping time after any time the water pump is controlled to pump water using the precise pumping rules until the accumulated third number is equal to the third target number.

[0071] The specific definition of the steam generator control device can be found in the definition of the steam generator control method above and will not be repeated here. Each module in the steam generator control device described above may be implemented in whole or in part via software, hardware, or a combination thereof. Each of the modules described above may be embedded in or independent of a processor in a computer device in hardware form, or may be stored in a computer device memory in software form, so that the processor can call and execute the corresponding operations of each module.

[0072] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0073] It should also be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for display, data for analysis, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0074] Each embodiment in this specification is described in a related manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the system embodiment is generally similar to the method embodiment, so the description is relatively simple. For related parts, refer to the description of the method embodiment.

[0075] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A method for controlling a steam generator, characterized in that: The steam generator includes a housing for generating steam and a water pump; a cavity is provided in the housing, and the water pump is used to pump water into the cavity; the control method includes: During the steam generation phase, the water pump is controlled to pump water a predetermined number of times using a precise pumping rule; the precise pumping rule enables the water pump to be pumped in immediately when the water is completely dried up after one pumping; Controlling the water pump to pump water a predetermined number of times by using a modified pumping rule to achieve a second target number of times to avoid overflow; the modified pumping rule is used to correct the water volume error; The first target number is greater than the second target number, the first target number is greater than or equal to two and less than a preset limit number, and the second target number is greater than or equal to one; the limit number is the ratio of the volume of the cavity to the pumping volume of a single precise pumping rule; the sum of the first target number and the second target number reaches a preset stop number; The step of controlling the water pump to pump water a preset number of times using a precise pumping rule to reach a preset first target number includes: controlling the water pump to start for a preset pumping time; accumulating a first number after a preset first interval; if the accumulated first number is less than the first target number, repeating the step of controlling the water pump to start for a preset pumping time until the accumulated first number equals the first target number; The method of controlling the water pump to pump water a number of times to reach a preset second target number by modifying the pumping rule includes: controlling the water pump to start a preset pumping time; accumulating the second number once after a preset second interval time; if the accumulated second number is less than the second target number, repeating the step of controlling the water pump to start a preset pumping time until the accumulated second number is equal to the second target number.

2. The control method according to claim 1, characterized in that: Also includes: The water pump is controlled to pump water a number of times to reach a preset third target number of times according to the supplementary pumping rule.

3. The control method according to claim 2, characterized in that: The method of controlling the water pump to pump water a number of times according to the supplementary pumping rule to reach a preset third target number of times includes: After the water pump is controlled to pump water according to the precise pumping rule at any time, the water pump is controlled to start for a preset pumping time; After the preset third interval time, the third number is accumulated once; Repeat the step of controlling the water pump to start for a preset pumping time after controlling the water pump to pump water using the precise pumping rule any time, until the accumulated third number is equal to the third target number.

4. The control method according to claim 2, characterized in that: The method of controlling the water pump to pump water a number of times according to the supplementary pumping rule to reach a preset third target number of times includes: After the water pump is controlled to pump water using the modified pumping rule at any time, the water pump is controlled to start for a preset pumping time; After the preset third interval time, the third number is accumulated once; Repeat the step of controlling the water pump to start for a preset pumping time after controlling the water pump to pump water using the precise pumping rule any time, until the accumulated third number is equal to the third target number.

5. A control device for a steam generator, characterized in that: The steam generator includes a cavity for generating steam and a water pump for pumping water into the cavity; the control device includes: A water pumping control unit is used to control the water pump to pump water a predetermined number of times according to a precise water pumping rule during the steam generation stage; the precise water pumping rule can ensure that new water can be pumped in immediately when the water is completely dried up after one pumping; Controlling the water pump to pump water a predetermined number of times by using a modified pumping rule to achieve a second target number of times to avoid overflow; the modified pumping rule is used to correct the water volume error; The first target number is greater than the second target number, the first target number is greater than or equal to two and less than a preset limit number, and the second target number is greater than or equal to one; the limit number is the ratio of the volume of the cavity to the pumping volume of a single precise pumping rule; the sum of the first target number and the second target number reaches a preset stop number; The control unit is specifically configured to: control the water pump to start for a preset pumping time; accumulate a first number after a preset first interval; if the accumulated first number is less than the first target number, repeatedly executing the step of controlling the water pump to start for a preset pumping time until the accumulated first number is equal to the first target number; The control unit is specifically used to: control the water pump to start for a preset pumping time; accumulate a second number after a preset second interval time; if the accumulated second number is less than the second target number, repeat the step of controlling the water pump to start for a preset pumping time until the accumulated second number is equal to the second target number.

6. The control device for a steam generator according to claim 5, characterized in that: The control device further comprises: The replenishment control unit is used to control the water pump to pump water a number of times to reach a preset third target number of times according to the replenishment pumping rule.

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