CN117128495A - Control method and device of steam generator, steam generator and storage medium - Google Patents
Control method and device of steam generator, steam generator and storage medium Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 78
- 238000010438 heat treatment Methods 0.000 claims abstract description 314
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 260
- 238000001704 evaporation Methods 0.000 claims abstract description 40
- 230000008020 evaporation Effects 0.000 claims abstract description 38
- 238000006243 chemical reaction Methods 0.000 claims description 29
- 238000009835 boiling Methods 0.000 claims description 5
- 238000004590 computer program Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 57
- 238000007599 discharging Methods 0.000 description 18
- 238000010586 diagram Methods 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000009123 feedback regulation Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
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- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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Abstract
The invention discloses a control method and device of a steam generator, the steam generator and a storage medium. The method comprises the following steps: acquiring the temperature of the steam discharge section; and according to the temperature of the steam discharge section, adjusting the heating power of the heating element and/or the water flow input in the water flow input pipeline so as to enable the temperature of the steam discharge section to be in a preset temperature range. By utilizing the technical scheme, the problem that the existing steam generator is easy to dry heat and damage components can be solved, the liquid level in the heating channel can be maintained at the tail end position of the heating element, the liquid level is effectively heated and evaporated, and the evaporation efficiency is stabilized; meanwhile, the space is avoided between the liquid level and the tail end of the heating piece, the phenomenon of dry burning is prevented, and the improvement of the product quality and the service life of the product are facilitated.
Description
Technical Field
The embodiment of the invention relates to the technical field of household appliances, in particular to a control method and device of a steam generator, the steam generator and a storage medium.
Background
Along with the improvement of living standard, the water dispenser becomes an electric appliance product necessary for family life. The current water dispenser has relatively single function and is mainly used for generating hot water.
In the related art, a steam water dispenser is provided, namely, on the basis of the water dispenser, a steam function is additionally added for humidifying air and the like. However, the evaporation efficiency of the steam function in the current steam water dispenser is unstable, and dry burning phenomenon is easy to occur, so that the steam generator component is damaged and other conditions occur.
Disclosure of Invention
The embodiment of the invention provides a control method and device of a steam generator, the steam generator and a storage medium, so as to stabilize evaporation efficiency and avoid dry combustion.
In a first aspect, an embodiment of the present invention provides a control method for a steam generator, where the steam generator includes a heating channel and a heating element, where the heating element is assembled on the heating channel, one end of the heating channel is connected to a water flow input pipe, the other end is connected to a steam output pipe, and the heating channel includes a steam generating section and a steam discharging section that are sequentially connected;
the control method comprises the following steps:
acquiring the temperature of the steam discharge section; and according to the temperature of the steam discharge section, adjusting the heating power of the heating element and/or the water flow input in the water flow input pipeline so as to enable the temperature of the steam discharge section to be in a preset temperature range.
Optionally, according to the temperature of the steam discharging section, adjusting the heating power of the heating element and/or the water flow rate input in the water flow input pipeline so that the temperature of the steam discharging section is within a preset temperature range, including:
and when the difference between the temperature of the steam discharge section and the optimal working temperature of the steam discharge section exceeds a preset temperature difference range, adjusting the heating power of the heating element and/or the water flow input into the water flow input pipeline so as to enable the temperature of the steam discharge section to be in the preset temperature range.
Optionally, before acquiring the temperature of the steam exhaust section, the method further comprises:
acquiring the temperature T of the water body in the water flow input pipeline b ；
According to the temperature T of the water body in the water flow input pipeline b And the energy conversion relation P x eta = C x u x P x (T a -T b ) Determining initial heating power of the heating element and initial water flow input in the water flow input pipeline to control the heating element to heat so as to generate steam; wherein P is the heating power of the heating element, u is the water flow input in the water flow input pipeline, eta is the heat efficiency of the steam generator, rho is the water density, C is the specific heat of water, H is the evaporation heat of water, T a Is the boiling temperature of the water body.
Optionally, according to the temperature T of the water body in the water flow input pipeline b And the energy conversion relation P x eta = C x u x P x (T a -T b ) And (H) u ρ, determining an initial heating power of the heating element and an initial water flow rate input into the water flow input pipeline, so as to control the heating element to heat and generate steam, including:
setting initial heating power of the heating element;
according to the initial heating power of the heating element and the energy conversion relation p×η=c×u×ρ (T a -T b ) +h p, calculating the water flowThe initial water flow input in the pipeline is input.
Optionally, according to the temperature of the steam discharging section, adjusting the heating power of the heating element and/or the water flow rate input in the water flow input pipeline so that the temperature of the steam discharging section is within a preset temperature range, including:
when the temperature of the steam discharge section exceeds a preset temperature range, increasing the flow of the water body input into the water flow input pipeline;
and when the temperature of the steam discharge section is lower than a preset temperature range, reducing the flow of the water body input into the water flow input pipeline.
Optionally, according to the temperature T of the water body in the water flow input pipeline b And the energy conversion relation P x eta = C x u x P x (T a -T b ) And (H) u ρ, determining an initial heating power of the heating element and an initial water flow rate input into the water flow input pipeline, so as to control the heating element to heat and generate steam, including:
setting an initial water flow input in the water flow input pipeline;
according to the initial water flow input in the water flow input pipeline and the energy conversion relation P x eta = C x u x P x (T a -T b ) +h x u x ρ, calculating an initial heating power of the heating element.
Optionally, according to the temperature of the steam discharging section, adjusting the heating power of the heating element and/or the water flow rate input in the water flow input pipeline so that the temperature of the steam discharging section is within a preset temperature range, including:
reducing the heating power of the heating element when the temperature of the steam discharge section exceeds a preset temperature range;
and when the temperature of the steam discharge section is lower than a preset temperature range, increasing the heating power of the heating element.
In a second aspect, an embodiment of the present invention further provides a control device for a steam generator, where the steam generator includes a heating channel and a heating element, the heating element is assembled in the heating channel, one end of the heating channel is connected to a water flow input pipe, the other end is connected to a steam output pipe, and the heating channel includes a steam generating section and a steam discharging section that are sequentially connected; the control device includes:
A temperature acquisition module for acquiring a temperature of the steam exhaust section;
and the temperature adjusting module is used for adjusting the heating power of the heating element and/or the water flow input in the water flow input pipeline according to the temperature of the steam discharge section so as to enable the temperature of the steam discharge section to be in a preset temperature range.
In a third aspect, an embodiment of the present invention further provides a steam generator, including:
one or more processors;
a storage means for storing one or more programs;
the one or more programs are executed by the one or more processors, so that the one or more processors implement the control method of the steam generator provided by the embodiment of the present invention.
In a fourth aspect, the embodiment of the present invention further provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the control method of the steam generator provided by the embodiment of the present invention.
The embodiment of the invention provides a control method and device of a steam generator, the steam generator and a storage medium. By utilizing the technical scheme, the problem that the existing steam generator is easy to dry heat and damage components can be solved, the liquid level in the heating channel can be maintained at the tail end position of the heating element, the liquid level is effectively heated and evaporated, and the evaporation efficiency is stabilized; meanwhile, the space is avoided between the liquid level and the tail end of the heating piece, the phenomenon of dry burning is prevented, and the improvement of the product quality and the service life of the product are facilitated.
Drawings
Fig. 1 is a schematic flow chart of a control method of a steam generator according to a first embodiment of the present invention;
fig. 2 is a schematic structural view of a steam generator according to a first embodiment of the present invention;
fig. 3 is a schematic flow chart of a control method of a steam generator according to a second embodiment of the present invention;
FIG. 4 is a logic block diagram of a method of controlling the steam generator shown in FIG. 3;
fig. 5 is a schematic flow chart of a control method of a steam generator according to a third embodiment of the present invention;
FIG. 6 is a logic block diagram of a control method of the steam generator shown in FIG. 5;
fig. 7 is a schematic structural diagram of a control device for a steam generator according to a fourth embodiment of the present invention;
fig. 8 is a schematic structural diagram of a steam generator according to a fifth embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Before discussing exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart depicts operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently, or at the same time. Furthermore, the order of the operations may be rearranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figures. The processes may correspond to methods, functions, procedures, subroutines, and the like. Furthermore, embodiments of the invention and features of the embodiments may be combined with each other without conflict.
The term "comprising" and variants thereof as used herein is intended to be open ended, i.e., including, but not limited to. The term "based on" is based at least in part on. The term "one embodiment" means "at least one embodiment".
It should be noted that the terms "first," "second," and the like herein are merely used for distinguishing between corresponding contents and not for defining a sequential or interdependent relationship.
It should be noted that references to "one", "a plurality" and "a plurality" in this disclosure are intended to be illustrative rather than limiting, and those skilled in the art will appreciate that "one or more" is intended to be construed as "one or more" unless the context clearly indicates otherwise.
Example 1
Fig. 1 is a schematic flow chart of a control method of a steam generator according to a first embodiment of the present invention, where the method is applicable to feedback control of the steam generator, and the method may be performed by a control device of the steam generator, where the device may be implemented by software and/or hardware and is generally integrated on the steam generator. Fig. 2 is a schematic structural view of a steam generator according to a first embodiment of the present invention, and referring to fig. 2, the steam generator includes a heating channel 10 and a heating member 20, the heating member 20 is assembled to the heating channel 10, one end (a first end 101 is illustrated in the figure) of the heating channel 10 is communicated with a water flow input pipe (not illustrated in the figure), and the other end (a second end 102 is illustrated in the figure) is communicated with a steam output pipe (not illustrated in the figure). The heating path 10 includes a steam generation section 111 and a steam discharge section 112 which are sequentially communicated. The boundary position between the steam generation section 111 and the steam discharge section 112 is the position of the water surface in the heating channel 10, and the water body evaporates the steam from the position of the water surface and is discharged after the steam generation section 111 is heated.
It should be noted that the heating channel 10 as illustrated in fig. 2 is substantially a heating tube 11, the heating member 20 is substantially a heating wire 21, and the heating wire 21 is illustratively assembled to the heating tube 11 in a winding manner. Further, the heating wire 21 is wound on the heating pipe 11 in the following manner: the winding density gradually increases in the direction of the first end 101 toward the second end 102. The heat generated from the heating member 20 is concentrated more in the steam generation section 111 and concentrated more in the end where the heating wire 21 is densely wound, i.e., in the direction of the water flow inside the heating passage 10, the junction between the steam generation section 111 and the steam discharge section 112 can concentrate more heat, contributing to the improvement of the evaporation efficiency. Of course, it is only an application example of the present invention, and in other embodiments of the present invention, the heating element may alternatively be uniformly wound, and even the heating channel 10 and the heating element 20 may take other forms of non-heating pipe and non-heating wire, which is not limited herein. The steam generator in this embodiment includes, but is not limited to: steaming and drinking integrated machine and other devices.
As shown in fig. 1, a control method of a steam generator according to a first embodiment of the present invention includes the following steps:
S110, acquiring the temperature of the steam discharge section.
Referring to fig. 2, first, taking the heating channel 10 as the heating tube 11 and the heating element 20 as the heating wire 21 as an example, in the steam generating process, the water flow input pipeline will introduce water into the heating tube 11, the heating tube 11 is heated by the heating wire 21, and the water in the heating tube will generate vapor evaporation at the liquid level, so that the whole heating channel 10 can be divided into the steam generating section 111 and the steam discharging section 112, the boundary position between the steam generating section 111 and the steam discharging section 112 is the evaporation liquid level, and the steam is output through the steam discharging section 112 and the steam output pipeline after the evaporation liquid level is generated. Inside the heating pipe 11 there will be a fixed water flow direction, i.e. a vertically upward direction pointing from the first end 101 to the second end 102. In the present embodiment, the temperature of the steam discharge section 112 is acquired for the purpose of collecting the temperature of the position of the heating pipe 11 where steam is discharged.
It will be appreciated that evaporation of water vapour occurs primarily at the level of the liquid, and that it is desirable to control the level of the liquid in the region around which the heated member 20 is wound so that the energy of the heated member 20 can be heated to the level of the liquid. However, due to the mismatch or fluctuation of the evaporation rate, the heating power, and the water flow rate, the liquid level may be changed, so that the liquid level may be lowered, a certain distance may be generated between the liquid level and the upper end of the heating member 20, and the distance area is substantially in the dry heating condition of the heating member 20, and the temperature at the steam discharging section 112 may be rapidly increased when the dry heating occurs. On the contrary, by monitoring the temperature of the steam discharging section 112 during the steam generation process, it can be determined whether the liquid level is lowered or not, and whether the heating element 20 has dry burning or not is determined, so as to perform feedback adjustment on the liquid level.
S120, according to the temperature of the steam discharge section, heating power of the heating element and/or water flow input in the water flow input pipeline are/is adjusted, so that the temperature of the steam discharge section is in a preset temperature range.
As described above, this step is essentially a process of feedback-adjusting the position of the liquid level inside the heating channel 10 according to the temperature at the steam discharge section 112. Specifically, it will be appreciated by those skilled in the art that the level of the liquid is related to the flow rate of the water being fed into the water flow inlet conduit and also to the heating power of the heating element 20. The more the flow of the water is input into the water flow input pipeline, the water is not evaporated, and the liquid level position is gradually increased; the higher the heating power of the heating element 20, the higher the evaporation rate, and the faster the water body in the heating channel 10 is consumed, resulting in a gradual decrease in the liquid level position. Based on this, in this embodiment, at least one of the heating power of the heating element and the water flow rate input into the water flow input pipeline may be adjusted to feedback and adjust the height of the liquid level, so that the liquid level is maintained at the junction position of the winding area and the non-winding area of the heating wire 21, that is, the end position of the heating element, and the condition that the heating element 20 is dry-burned is avoided, thereby ensuring that the temperature at the steam discharge section 112 is within the preset temperature range.
The first embodiment of the invention provides a control method of a steam generator, which comprises the steps of firstly obtaining the temperature of a steam discharge section; and then according to the temperature of the steam discharge section, adjusting the heating power of the heating element and/or the water flow input in the water flow input pipeline so as to enable the temperature of the steam discharge section to be in a preset temperature range. By utilizing the method, the problem that the existing steam generator is easy to cause dry combustion and damage to components can be solved, the liquid level in the heating channel can be maintained at the tail end position of the heating element, the liquid level is effectively heated and evaporated, and the evaporation efficiency is stabilized; meanwhile, the space between the liquid level and the heating piece is avoided, the phenomenon of dry burning is prevented, and the improvement of the product quality and the service life of the product are facilitated.
On the basis of the above embodiments, modified embodiments of the above embodiments are proposed, and it is to be noted here that only the differences from the above embodiments are described in the modified embodiments for the sake of brevity of description.
In one embodiment, the step S120 may specifically include:
s121, when the difference between the temperature of the steam discharge section and the optimal working temperature of the steam discharge section exceeds a preset temperature difference range, the heating power of the heating element and/or the water flow input into the water flow input pipeline are/is adjusted so that the temperature of the steam discharge section is within the preset temperature range.
Here, the optimal operation temperature of the vapor discharge section 112 refers to a temperature at which the heating element is maintained at the vapor discharge section above the heating element 20 under the optimal operation condition, and it is understood that a certain fluctuation may occur in the temperature when the vapor level is maintained at the end above the heating element 20 due to a detection error of the temperature, environmental influence, and the like. The step is to make a difference between the temperature detected in real time at the steam exhaust section 112 and the optimal working temperature based on the optimal working temperature while taking the temperature fluctuation condition into consideration, and when the temperature difference meets the preset condition, to determine that the heating element is in a normal state; when the temperature difference exceeds the preset condition, judging that the liquid level is lower than the tail end above the heating element, and the dry combustion condition exists. Illustratively, with the optimal operating temperature of the heating element being T0, when the temperature T of the real-time detected steam discharge section 112 satisfies T ε (T0+ -m), the heating element is determined to be in a normal state, when the temperature of the real-time detected steam discharge section 112And judging that the heating element has dry burning condition. Therefore, when the dry burning is judged, the heating power of the heating element and/or the water flow input by the water flow input pipeline are/is controlled, and the liquid level position is adjusted to perform dry burning prevention control.
In another embodiment of the present invention, optionally, before step S110, the following steps may be added:
s101, acquiring the temperature T of the water body in the water flow input pipeline b ；
S102, inputting the temperature T of the water body in the pipeline according to the water flow b The energy conversion relation p=η=cu×ρ (T a -T b ) Determining initial heating power of the heating element and initial water flow input into the water flow input pipeline to control the heating element to heat so as to generate steam; wherein P is the heating power of the heating element, u is the water flow input in the water flow input pipeline, eta is the heat efficiency of the steam generator, rho is the water density, C is the specific heat of water, H is the evaporation heat of water, T a Is the boiling temperature of the water body.
The steps S101 and S102 are essentially a process of setting the heating power of the initial heating element and the initial water flow according to the heat conversion relation of the heating element heating heat converted into the heat required by the water evaporation, and based on the heat conversion relation, the water evaporation rate and the input water flow can be controlled to be matched with each other, and the liquid level is basically controlled to be at the position of the tail end above the heating element. It can be understood that in addition to the heat conversion efficiency η, the initial temperature of the water body, that is, the temperature of the water body in the water flow input pipeline, needs to be obtained in the heat conversion relationship, and the heat required by the evaporation of the water body can be calculated and obtained based on the initial temperature of the water body.
Specifically, according to the derivation, the energy conversion relation of the heating channel is p×η=c×u×ρ (T a -T b ) +H.u.rho, wherein P is the heating power of the heating element, u is the water flow input in the water flow input pipeline, eta is the heat efficiency of the steam generator, rho is the water density, C is the specific heat of water, H is the evaporation heat of water, T a Is the boiling temperature of the water body. Wherein the left side of the equation is the product of the heating power and the conversion efficiency of the heating element, the right side of the equation is the heat required by evaporation in unit time of the water body, the relation between the initial heating power P of the heating element and the initial water body flow u can be determined according to the relation, and after the evaporation process is started by the parameters, the liquid level position is regulated by real-time temperature feedback of the tail end of the heating elementAnd dry burning is prevented.
Example two
Fig. 3 is a schematic flow chart of a control method of a steam generator according to a second embodiment of the present invention, and fig. 4 is a logic block diagram of the control method of the steam generator shown in fig. 3, where the second embodiment is optimized based on the above embodiments. In this embodiment, the temperature T of the water in the pipeline will be input according to the water flow b The energy conversion relation p=η=cu×ρ (T a -T b ) And (4) determining the initial heating power of the heating element and the initial water flow input into the water flow input pipeline so as to control the heating element to heat and generate steam, wherein the method further comprises the following steps of:
setting initial heating power of the heating element;
according to the initial heating power of the heating element, the energy conversion relation p=c×u×ρ (T a -T b ) And +H.u.rho, calculating the initial water flow input in the water flow input pipeline.
Further, according to the temperature of the steam discharging section, the heating power of the heating element and/or the water flow input in the water flow input pipeline are/is adjusted, so that the temperature of the steam discharging section is within a preset temperature range, and the method is further optimized as follows: .
When the temperature of the steam discharge section exceeds a preset temperature range, increasing the flow of the water body input into the water flow input pipeline;
and when the temperature of the steam discharge section is lower than a preset temperature range, reducing the flow of the water body input into the water flow input pipeline.
For details not yet described in detail in this embodiment, refer to embodiment one.
As shown in fig. 3 and 4, a control method of a steam generator according to a second embodiment of the present invention includes the following steps:
s210, acquiring the temperature T of the water body in the water flow input pipeline b 。
S220, setting initial heating power of the heating element.
S230, according to the initial heating power and energy of the set heating elementConversion relation p=c×u×ρ (T a -T b ) And +H.u.rho, calculating the initial water flow input in the water flow input pipeline.
As described above, the heating power P of the heating element and the water flow u input into the water flow input pipeline should satisfy the energy conversion relation, so as to start the evaporation process and control the position of the evaporation liquid level. In this embodiment, a specific implementation manner is provided, that is, the initial heating power of the heating element is preset, and the initial water flow input by the heating channel is obtained through calculation according to the energy conversion relation, so that the steam evaporation process is started. In addition, in the actual operation process, the water flow u input by the heating channel is controlled, and the duty ratio of the liquid pump can be used for regulation and control through the liquid pump arranged on the water flow input pipeline.
S240, acquiring the temperature of the steam discharge section.
S250, when the temperature of the steam discharge section exceeds a preset temperature range, increasing the flow of the water body input into the water flow input pipeline.
And S260, when the temperature of the steam discharge section is lower than a preset temperature range, reducing the flow of the water body input into the water flow input pipeline.
As also described above, since the heating power of the heating element and the water flow rate input into the water flow input pipeline are two parameters capable of adjusting and controlling the position of the evaporating liquid level, in the specific implementation process, one parameter can be fixed, and only the other parameter is adjusted, so that the adjusting and controlling logic is simplified. Based on the initial heating power of the preset heating piece, further, the heating power of the heating piece can be kept unchanged, and then the water flow input in the heating channel is regulated to feed back and regulate the liquid level position, so that the dry heating condition is avoided.
The steps S250 and S260 are processes of feedback-adjusting the liquid level according to the positive correlation between the water flow and the temperature of the steam exhaust section. Specifically, in the actual feedback regulation process, if the dry combustion phenomenon occurs at the end position of the heating element, the temperature of the steam discharge section gradually increases, so that the monitored temperature T of the steam discharge section exceeds the preset temperature range, namelyAnd when T is more than T0+ m, the liquid level position in the heating channel is lower than the end position of the heating element, at the moment, the water flow can be increased, namely the duty ratio of the liquid pump is increased, so that the liquid level is higher than the evaporation rate of the water, the residual water in the heating channel is gradually increased, the liquid level is gradually increased, the position of the end of the heating element is reached, and the temperature of the steam discharge section is further reduced. Conversely, if the temperature of the steam exhaust section is too low, the temperature T of the steam exhaust section obtained by monitoring is lower than the preset temperature range >When T is smaller than T0-m, the liquid level in the heating channel is higher than the tail end position of the heating element, so that the water flow can be reduced, namely the duty ratio of the liquid pump is reduced, and the liquid level is lower than the evaporation rate of the water, so that the residual water in the heating channel is gradually reduced, the liquid level reaches the tail end position of the heating element, and the temperature of the steam discharge section is further increased.
According to the control method of the steam generator, provided by the embodiment of the invention, the steps of adjusting the heating power of the heating element and/or the water flow input into the water flow input pipeline according to the temperature of the steam discharge section so as to enable the temperature of the steam discharge section to be in the preset temperature range are embodied, and by using the method, the feedback adjustment of the temperature of the steam discharge section can be realized more simply only by controlling the water flow input into the heating channel, and the position of the evaporation liquid level in the heating channel is controlled to be positioned at the tail end position of the heating element, so that the evaporation efficiency is effectively stabilized, and the dry combustion condition is avoided.
Example III
Fig. 5 is a schematic flow chart of a control method of a steam generator according to a third embodiment of the present invention, and fig. 6 is a logic block diagram of the control method of the steam generator shown in fig. 5, where the third embodiment is optimized based on the foregoing embodiments. In this embodiment, the temperature T of the water in the pipeline will be input according to the water flow b The energy conversion relation p=η=cu×ρ (T a -T b )+H*u* ρ, determining an initial heating power of the heating element and an initial water flow input in the water flow input pipeline, so as to control the heating element to heat and generate steam, and further comprising:
setting an initial water flow input in a water flow input pipeline;
according to the initial water flow input in the water flow input pipeline and the energy conversion relation p=c×u×ρ (T a -T b ) +H.u.rho, the initial heating power of the heating element is calculated.
Further, according to the temperature of the steam discharging section, the heating power of the heating element and/or the water flow input in the water flow input pipeline are/is adjusted, so that the temperature of the steam discharging section is within a preset temperature range, and the method is further optimized as follows: .
When the temperature of the steam discharge section exceeds a preset temperature range, reducing the heating power of the heating element;
and when the temperature of the steam discharge section is lower than a preset temperature range, increasing the heating power of the heating element.
For details of this embodiment, reference is made to the first and second embodiments.
As shown in fig. 5 and 6, a control method of a steam generator according to a third embodiment of the present invention includes the following steps:
S310, acquiring the temperature T of the water body in the water flow input pipeline b 。
S320, setting the initial water flow input in the water flow input pipeline.
S330, according to the initial water flow input in the water flow input pipeline and the energy conversion relation p×η=cu×ρ (T a -T b ) +H.u.rho, the initial heating power of the heating element is calculated.
Similarly, the heating power P of the heating element and the water flow u input into the water flow input pipeline should meet the energy conversion relation, so as to start the evaporation process and control the position of the evaporation liquid level. In this embodiment, another specific implementation manner is provided, that is, the initial water flow of the input heating channel is preset, and the heating power of the initial heating element is obtained through calculation according to the energy conversion relation, so as to start the steam evaporation process.
S340, acquiring the temperature of the steam discharge section.
And S350, when the temperature of the steam discharge section exceeds a preset temperature range, reducing the heating power of the heating element.
And S360, when the temperature of the steam discharge section is lower than a preset temperature range, increasing the heating power of the heating element.
As also described above, since the heating power of the heating element and the water flow rate input into the water flow input pipeline are two parameters capable of adjusting and controlling the position of the evaporating liquid level, in the specific implementation process, one parameter can be fixed, and only the other parameter is adjusted, so that the adjusting and controlling logic is simplified. Based on the initial water flow of the preset input heating channel, further, the initial water flow of the input heating channel can be ensured to be unchanged, and then the initial heating power of the heating element is adjusted to feed back and adjust the liquid level position, so that dry burning is avoided.
The steps S350 and S360 are the process of feedback adjusting the liquid level according to the positive correlation between the water flow and the temperature of the steam exhaust section. Specifically, in the actual feedback regulation process, if the dry combustion phenomenon occurs at the end position of the heating element to cause the temperature to gradually rise, the temperature T of the monitored steam discharge section exceeds the preset temperature range, namelyAnd when T is more than T0+ m, the liquid level position in the heating channel is lower than the tail end position of the heating element, at the moment, the heating power P of the heating element can be reduced, so that the evaporation rate of water is reduced, the evaporation rate is lower than the water flow, the residual water in the heating channel is gradually increased, the liquid level reaches the tail end position of the heating element, and the temperature of the steam discharge section is reduced. Conversely, if the temperature of the steam exhaust section is too low, the temperature T of the steam exhaust section obtained by monitoring is beyond the preset temperature range>And T < T0-m, then heating is indicatedThe liquid level in the channel is higher than the tail end of the heating element, so that the heating power of the heating element can be increased, the evaporation rate is higher than the water flow, the residual water in the heating channel is gradually reduced, the liquid level is gradually reduced, the tail end of the heating element is reached, and the temperature of the steam discharge section is further increased.
According to the control method of the steam generator, which is provided by the third embodiment of the invention, the step of adjusting the heating power of the heating element and/or the water flow input into the water flow input pipeline according to the temperature of the steam discharge section so as to enable the temperature of the steam discharge section to be in a preset temperature range is embodied. By using the method, only the heating power of the heating element is required to be controlled, the feedback adjustment of the temperature of the steam discharge section can be realized more simply, and the position of the evaporation liquid level in the heating channel is controlled to be positioned at the tail end of the heating element, so that the evaporation efficiency is effectively stabilized, and the dry burning condition is avoided.
Example IV
Fig. 7 is a schematic structural diagram of a control device for a steam generator according to a fourth embodiment of the present invention, where the device is applicable to feedback control of the steam generator, and the device may be implemented in software and/or hardware and is generally integrated in the steam generator. And, referring to fig. 2, the steam generator includes a heating passage 10 and a heating member 20, the heating member 20 being wound around the heating passage 10, one end (first end 101 in the drawing) of the heating passage 10 being in communication with the water flow input pipe, and the other end (second end 102 in the drawing) being in communication with the steam output pipe. The heating path 10 includes a steam generation section 111 and a steam discharge section 112 which are sequentially communicated. The boundary position between the steam generation section 111 and the steam discharge section 112 is the position of the water surface in the heating channel 10, and the water body evaporates the steam from the position of the water surface and is discharged after the steam generation section 111 is heated.
As shown in fig. 7, the apparatus includes:
a first temperature acquisition module 100 for acquiring a temperature of the steam discharge section;
the temperature adjusting module 200 is configured to adjust heating power of the heating element and/or water flow rate input in the water flow input pipeline according to the temperature of the steam discharge section, so that the temperature of the steam discharge section is within a preset temperature range.
In this embodiment, the apparatus first acquires the temperature of the steam exhaust section through the first temperature acquisition module; and then, adjusting the heating power of the heating element and/or the water flow input into the water flow input pipeline by the temperature adjusting module according to the temperature of the steam discharge section so as to enable the temperature of the steam discharge section to be in a preset temperature range. The embodiment provides a control device of a steam generator, which can solve the problem that the existing steam generator is easy to cause dry burning and damage components, can maintain the liquid level in a heating channel at the tail end position of a heating element, effectively heats and evaporates the liquid level, and stabilizes the evaporation efficiency; meanwhile, the space is avoided between the liquid level and the tail end of the heating piece, the phenomenon of dry burning is prevented, and the improvement of the product quality and the service life of the product are facilitated.
Further, the temperature adjusting module 200 is specifically configured to adjust the heating power of the heating element and/or the water flow rate input into the water flow input pipeline when the difference between the temperature of the steam exhaust section and the optimal working temperature of the steam exhaust section exceeds the preset temperature difference range, so that the temperature of the steam exhaust section is within the preset temperature range.
Further, on the basis of the above scheme, the device may further include:
a second temperature acquisition module for acquiring the temperature T of the water body in the water flow input pipeline b ；
An initial parameter determining module for determining the temperature T of the water body in the water flow input pipeline b The energy conversion relation p=η=cu×ρ (T a -T b ) Determining initial heating power of the heating element and initial water flow input into the water flow input pipeline to control the heating element to heat so as to generate steam; wherein P is the heating power of the heating element, u is the water flow input in the water flow input pipeline, eta is the heat efficiency of the steam generator, rho is the water density, C is the specific heat of water, H is the evaporation heat of water, T a Is the boiling temperature of the water body.
Based on the optimization, the initial parameter determining module may include:
a setting unit for setting an initial heating power of the heating element;
a calculation unit for calculating an initial heating power of the heating element according to the set initial heating power and an energy conversion relation p×η=cu×ρ (T a -T b ) And +H.u.rho, calculating the initial water flow input in the water flow input pipeline.
Based on this, the temperature adjustment module 200 is specifically configured to:
when the temperature of the steam discharge section exceeds a preset temperature range, increasing the flow of the water body input into the water flow input pipeline;
And when the temperature of the steam discharge section is lower than a preset temperature range, reducing the flow of the water body input into the water flow input pipeline.
Based on the optimization, the initial parameter determining module may include:
the setting unit is used for setting the initial water flow input in the water flow input pipeline;
the calculation unit is configured to calculate an initial water flow rate according to the water flow input into the water flow input pipeline and an energy conversion relation p×η=c×u×ρ (T a -T b ) +H.u.rho, the initial heating power of the heating element is calculated.
Based on this, the temperature adjustment module 200 is specifically configured to:
when the temperature of the steam discharge section exceeds a preset temperature range, reducing the heating power of the heating element;
and when the temperature of the steam discharging section is lower than a preset temperature range, increasing the heating power of the heating element.
The control device of the steam generator can execute the control method of the steam generator provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Example five
Fig. 8 is a schematic structural diagram of a steam generator according to a fifth embodiment of the present invention. As shown in fig. 8, the apparatus provided in the fifth embodiment of the present invention includes: one or more processors 81 and a storage 82; the number of processors 81 in the device may be one or more, one processor 81 being taken as an example in fig. 8; the storage 82 is used for storing one or more programs; the one or more programs are executed by the one or more processors 81, so that the one or more processors 81 implement the control method of the steam generator according to any one of the embodiments of the present invention.
The steam generator may further include: an input device 83 and an output device 84.
The processor 81, the storage device 82, the input device 83 and the output device 84 in the steam generator may be connected by a bus or other means, in fig. 8 by way of example.
The storage device 82 in the steam generator is used as a computer readable storage medium, and may be used to store one or more programs, such as a software program, a computer executable program, and a module, which are program instructions/modules corresponding to the control method of the steam generator provided in the first to third embodiments of the present invention (for example, the module in the control device of the steam generator shown in fig. 8 includes a first temperature acquisition module 100 for acquiring the temperature of the steam exhaust section, and a temperature adjustment module 200 for adjusting the heating power of the heating element and/or the water flow input in the water flow input pipeline according to the temperature of the steam exhaust section so that the temperature of the steam exhaust section is within a preset temperature range). The processor 81 executes various functional applications of the steam generator and data processing by running software programs, instructions and modules stored in the storage 82, i.e. implements the control method of the steam generator in the above-described method embodiment.
The storage 82 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for a function; the storage data area may store data created according to the use of the steam generator, etc. In addition, the storage 82 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, the storage 82 may further include memory remotely located with respect to the processor 81, which may be connected to the device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input means 83 may be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the steam generator. The output 84 may include a display device such as a display screen.
And, when one or more programs included in the above-mentioned steam generator are executed by the one or more processors 81, the programs perform the following operations:
Acquiring the temperature of the steam discharge section;
according to the temperature of the steam discharge section, the heating power of the heating element and/or the water flow input in the water flow input pipeline are/is adjusted so that the temperature of the steam discharge section is within a preset temperature range.
Example six
A sixth embodiment of the present invention provides a computer-readable storage medium having stored thereon a computer program for executing a control method of a steam generator when executed by a processor, the method comprising:
acquiring the temperature of the steam discharge section;
according to the temperature of the steam discharge section, the heating power of the heating element and/or the water flow input in the water flow input pipeline are/is adjusted so that the temperature of the steam discharge section is within a preset temperature range.
Optionally, the program may be further used to perform the control method of the steam generator provided in any embodiment of the present invention when the program is executed by the processor.
The computer storage media of embodiments of the invention may take the form of any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access Memory (Random Access Memory, RAM), a Read-Only Memory (ROM), an erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), a flash Memory, an optical fiber, a portable CD-ROM, an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. A computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to: electromagnetic signals, optical signals, or any suitable combination of the preceding. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, radio Frequency (RF), and the like, or any suitable combination of the foregoing.
Computer program code for carrying out operations of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (10)
1. The control method of the steam generator is characterized in that the steam generator comprises a heating channel and a heating piece, the heating piece is assembled on the heating channel, one end of the heating channel is communicated with a water flow input pipeline, the other end of the heating channel is communicated with a steam output pipeline, and the heating channel comprises a steam generation section and a steam discharge section which are sequentially communicated;
the control method comprises the following steps:
acquiring the temperature of the steam discharge section;
and according to the temperature of the steam discharge section, adjusting the heating power of the heating element and/or the water flow input in the water flow input pipeline so as to enable the temperature of the steam discharge section to be in a preset temperature range.
2. The control method according to claim 1, wherein adjusting the heating power of the heating element and/or the flow rate of the water body input in the water flow input pipe so that the temperature of the steam discharge section is within a preset temperature range according to the temperature of the steam discharge section comprises:
and when the difference between the temperature of the steam discharge section and the optimal working temperature of the steam discharge section exceeds a preset temperature difference range, adjusting the heating power of the heating element and/or the water flow input into the water flow input pipeline so as to enable the temperature of the steam discharge section to be in the preset temperature range.
3. The control method according to claim 1, characterized by further comprising, before acquiring the temperature of the steam discharge section:
acquiring the temperature T of the water body in the water flow input pipeline b ；
According to the temperature T of the water body in the water flow input pipeline b And the energy conversion relation P x eta = C x u x P x (T a -T b ) Determining initial heating power of the heating element and initial water flow input in the water flow input pipeline to control the heating element to heat so as to generate steam; wherein P is the heating power of the heating element, u is the water flow input in the water flow input pipeline, eta is the heat efficiency of the steam generator, rho is the water density, C is the specific heat of water, H is the evaporation heat of water, T a Is the boiling temperature of the water body.
4. A control method according to claim 3, wherein the temperature T of the body of water in the water flow input conduit is based on b And the energy conversion relation P x eta = C x u x P x (T a -T b ) And (H) u ρ, determining an initial heating power of the heating element and an initial water flow rate input into the water flow input pipeline, so as to control the heating element to heat and generate steam, including:
setting initial heating power of the heating element;
according to the initial heating power of the heating element and the energy conversion relation p×η=c×u×ρ (T a -T b ) And +H.u.rho, calculating the initial water flow input in the water flow input pipeline.
5. The control method according to claim 4, wherein adjusting the heating power of the heating element and/or the flow rate of the water body input in the water flow input pipe so that the temperature of the steam discharge section is within a preset temperature range according to the temperature of the steam discharge section, comprises:
when the temperature of the steam discharge section exceeds a preset temperature range, increasing the flow of the water body input into the water flow input pipeline;
and when the temperature of the steam discharge section is lower than a preset temperature range, reducing the flow of the water body input into the water flow input pipeline.
6. A control method according to claim 3, wherein the temperature T of the body of water in the water flow input conduit is based on b And the energy conversion relation P x eta = C x u x P x (T a -T b ) And (H) u ρ, determining an initial heating power of the heating element and an initial water flow rate input into the water flow input pipeline, so as to control the heating element to heat and generate steam, including:
setting an initial water flow input in the water flow input pipeline;
according to the initial water flow input in the water flow input pipeline and the energy conversion relation P x eta = C x u x P x (T a -T b ) +h x u x ρ, calculating an initial heating power of the heating element.
7. The control method according to claim 6, wherein adjusting the heating power of the heating element and/or the flow rate of the water body input in the water flow input pipe so that the temperature of the steam discharge section is within a preset temperature range according to the temperature of the steam discharge section, comprises:
reducing the heating power of the heating element when the temperature of the steam discharge section exceeds a preset temperature range;
and when the temperature of the steam discharge section is lower than a preset temperature range, increasing the heating power of the heating element.
8. The control device of the steam generator is characterized in that the steam generator comprises a heating channel and a heating piece, the heating piece is assembled on the heating channel, one end of the heating channel is communicated with a water flow input pipeline, the other end of the heating channel is communicated with a steam output pipeline, and the heating channel comprises a steam generation section and a steam discharge section which are sequentially communicated; the control device includes:
a temperature acquisition module for acquiring a temperature of the steam exhaust section;
and the temperature adjusting module is used for adjusting the heating power of the heating element and/or the water flow input in the water flow input pipeline according to the temperature of the steam discharge section so as to enable the temperature of the steam discharge section to be in a preset temperature range.
9. A steam generator, comprising:
one or more processors;
a storage means for storing one or more programs;
when executed by the one or more processors, causes the one or more processors to implement the method of controlling a steam generator as recited in any one of claims 1-7.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements a method of controlling a steam generator according to any one of claims 1-7.
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| CN202311100724.9A CN117128495A (en) | 2023-08-29 | 2023-08-29 | Control method and device of steam generator, steam generator and storage medium |
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| CN202311100724.9A CN117128495A (en) | 2023-08-29 | 2023-08-29 | Control method and device of steam generator, steam generator and storage medium |
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