CN114321865A - Control method for generating steam with different dryness and humidity - Google Patents
Control method for generating steam with different dryness and humidity Download PDFInfo
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Abstract
The application provides a control method for generating steam with different dryness and humidity, which is applied to a steam generation system, wherein the steam generation system comprises a liquid inlet, a steam outlet, a water inlet valve and a steam heater, the water inlet valve and the steam heater are connected between the liquid inlet and the steam outlet, the water inlet valve is connected between the liquid inlet and the steam heater, and the control method comprises the following steps: controlling a water inlet valve to perform on-off alternate work at a first preset frequency so that liquid passing through the water inlet valve is conveyed to a steam heater at a first preset temperature in a pulse-type water flow mode; controlling the water inlet valve to perform on-off alternate work at a second preset frequency so that the liquid passing through the water inlet valve is conveyed to the steam heater at a second preset temperature in a pulse-type water flow mode; each pulse water flow is at least partially evaporated before flowing out of the steam heater to generate steam; the first preset frequency is different from the second preset frequency, and/or the first preset temperature is different from the second preset temperature.
Description
Technical Field
The invention relates to the technical field of steam generation, in particular to a control method for generating steam with different dryness and humidity.
Background
The steam generation mode in the prior art is basically a mode of heating and evaporating water stored in a boiler. The boiler also can be used for the water storage container of heating, and it has water to store in it, adopts modes such as electrical heating or fuel heating to heat the boiler for the water boiling in the boiler produces steam, then exports the steam that produces through transfer piping. The dryness and humidity of the steam generated by adopting a boiler heating mode cannot be adjusted, and the humidity of the steam is usually high and cannot be applied to the condition that the dry steam needs to be used; and because the steam is gas-liquid mixed steam with high humidity, the temperature is difficult to reach high temperature, and the steam is difficult to be applied to the situation that high-temperature steam is needed.
There is also a method for generating steam by a continuous heater disclosed in the prior art, such as the patent document CN110382953A, which discloses a scheme capable of providing different steam states, specifically: by measuring one or more variables that can affect the steam state of the steam generated on the continuous heater; calculating actuation data for power regulation of the pump and/or the heating device for generating the determined steam state; and to control the pump and the heating device with corresponding control data for generating steam with a determined steam state. This prior art discloses a general and rational solution, and it is difficult for those skilled in the art to better realize the controllability of the steam state based on the disclosure.
In view of the above, a new technical solution is needed to solve the above technical problems.
Disclosure of Invention
The invention provides a control method for generating steam with different dryness and humidity, which can generate various kinds of steam with stable and controllable quality and different dryness and humidity.
The invention is realized by the following technical scheme: a control method for generating steam with different dry humidity, which is applied to a steam generating system for generating at least two kinds of steam with different dry humidity, wherein the steam generating system comprises a liquid inlet, a steam outlet, and a water inlet valve and a steam heater which are connected between the liquid inlet and the steam outlet, and the water inlet valve is connected between the liquid inlet and the steam heater, and the control method comprises the following steps:
controlling the water inlet valve to perform on-off alternate work at a first preset frequency so that the liquid intermittently passes through the water inlet valve, and the liquid passing through the water inlet valve is conveyed to a steam heater at a first preset temperature in a pulse-type water flow manner; each of the pulsed water streams is at least partially vaporized prior to exiting the steam heater to produce a first dry humidity vapor;
controlling the water inlet valve to perform on-off alternate work at a second preset frequency so that the liquid intermittently passes through the water inlet valve, and the liquid passing through the water inlet valve is conveyed to a steam heater at a second preset temperature in a pulse-type water flow manner; each of the pulsed water streams is at least partially vaporized prior to exiting the steam heater to produce a second dry humidity vapor;
wherein the first preset frequency is different from the second preset frequency, and/or the first preset temperature is different from the second preset temperature.
Optionally, the first preset frequency is the same as the second preset frequency, and the first preset temperature is higher than the second preset temperature, so that the humidity of the generated first dry humidity steam is lower than that of the second dry humidity steam.
Optionally, the control method includes: pre-storing an information table of one-to-one correspondence between the steam dry-wet value and the preset temperature of the steam heater and/or the preset frequency of the water inlet valve; and when a steam instruction generating a certain preset steam dry-humidity value is triggered, reading the corresponding relation data in the information table, and setting the preset temperature of the steam heater and/or the preset frequency of the water inlet valve according to the corresponding relation data.
Optionally, the humidity value of the steam in the steady state is detected, and if the detected humidity value of the steam is different from the preset humidity value of the steam, the preset frequency of the on-off alternate work of the water inlet valve is adjusted or the preset temperature of the steam heater is adjusted.
Optionally, the steam generating system further comprises a liquid pump for controlling water feeding and stopping water feeding, and the control method comprises: controlling the water inlet valve to alternately work on and off at a preset frequency during the water inlet period of the liquid pump; and controlling the water inlet valve to stop working during the period that the liquid pump stops feeding water.
Optionally, the steam outlet has an open state and a closed state, and when the steam outlet is in the closed state, the control method includes: and controlling the steam heater to be in a heating state, and controlling the liquid pump and the water inlet valve to intermittently work so as to intermittently feed water into the steam heater.
Optionally, the frequency of intermittent operation of the liquid pump and the water inlet valve is less than the preset frequency of on-off alternate operation of the water inlet valve.
Optionally, the controlling the steam heater to be in a heating state and controlling the liquid pump and the water inlet valve to intermittently work to intermittently feed water into the steam heater includes:
controlling the steam heater to work and detecting the actual temperature of the steam heater, controlling the liquid pump and the water inlet valve to work to feed water into the steam heater when the actual temperature of the steam heater reaches a preset temperature, and controlling the liquid pump and the water inlet valve to stop feeding water into the steam heater when the actual temperature of the steam heater does not reach the preset temperature.
Optionally, the control method includes: when the steam pressure in the steam generation system reaches a preset value, the steam is discharged through the pressure release valve to release the pressure.
Optionally, the liquid pump is an electromagnetic pump, the water inlet valve is an electromagnetic valve, and the liquid pump and the water inlet valve are controlled in a linkage manner.
The control method for generating steam with different dry humidities provided by the invention realizes the water inlet mode of pulse water flow by controlling the water inlet valve to work alternatively on and off at a certain frequency, each pulse water flow is at least partially evaporated in the continuous flowing process in the steam heater, and the steam with different dry humidities is generated by controlling the working frequency of the water inlet valve and/or the humidity of the steam heater, so that the quality of the generated steam is stable and controllable.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
FIG. 1 is a schematic diagram of a steam generation system to which the control method of the present application is applied.
Fig. 2 is a flowchart of an embodiment of a control method of the present application.
Fig. 3 is a control flowchart of the control method of the present application in a closed state at the steam outlet.
Description of reference numerals: 1-a water inlet valve; 2-a liquid pump; 3-steam heater.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present application, but are merely examples of apparatus and methods consistent with certain aspects of the present application.
The following describes a control method for generating steam with different dry humidity according to the present application in detail with reference to the accompanying drawings. The features in the embodiments described below may be combined with each other without conflict.
Referring to fig. 1 to 3, the present application provides a control method for generating steam with different dryness and humidity, which is applied to a steam generating system for generating at least two kinds of steam with different dryness and humidity. Fig. 1 is a schematic diagram of an embodiment of a steam generation system applied to the control method for generating steam with different dry humidity. In the present embodiment, the steam generating system includes a liquid inlet and a steam outlet, and a liquid pump 2, a water inlet valve 1 and a steam heater 3 connected between the liquid inlet and the steam outlet, the water inlet valve 1 being connected between the liquid inlet and the steam heater 3. The liquid inlet, the liquid pump 2, the water inlet valve 1, the steam heater 3 and the steam outlet are connected through pipelines, liquid enters from the liquid inlet, enters the steam heater 3 through the water inlet valve 1 and the liquid pump 2, is heated and evaporated into steam, and then is discharged through the steam outlet. The liquid pump 2, i.e. the water pump, is used for controlling water intake or stopping water intake, and in an embodiment, the liquid pump 2 is an electromagnetic pump. The water inlet valve 1 is used for controlling the water inlet amount and the water inlet mode, and in one embodiment, the water inlet valve 1 is an electromagnetic valve. The liquid pump 2 and the water inlet valve 1 are subjected to linkage control through associated signals to ensure linkage matching of work between the liquid pump 2 and the water inlet valve 1, namely the water inlet valve 1 is controlled to be alternately switched on and off at a preset frequency during water inlet of the liquid pump 2; and controlling the water inlet valve 1 to stop working during the period that the liquid pump 2 stops water inlet.
Referring to fig. 2, the control method includes: controlling the water inlet valve 1 to work alternately on and off at a first preset frequency F1, so that the liquid intermittently passes through the water inlet valve 1, and the liquid passing through the water inlet valve 1 is conveyed to the steam heater 3 at a first preset temperature T1 in a pulse-type water flow; each of said pulsed water streams is at least partially evaporated before flowing out of said steam heater 3 to produce a first dry humidity vapor S1; controlling the water inlet valve 1 to alternately work at a second preset frequency F2, so that the liquid intermittently passes through the water inlet valve 1, and the liquid passing through the water inlet valve 1 is conveyed to the steam heater 3 at a second preset temperature T2 in a pulse-type water flow; each of said pulsed water streams is at least partially evaporated before flowing out of said steam heater 3 to produce a second dry humidity vapor S2; wherein the first preset frequency F1 is different from the second preset frequency F2, and/or the first preset temperature T1 is different from the second preset temperature T2.
The control method for generating steam with different dryness and humidity provided by the invention realizes the water inlet mode of pulse water flow by controlling the water inlet valve 1 to work alternatively on and off at a certain frequency, each pulse water flow is at least partially evaporated in the process of continuously flowing in the steam heater 3, so that the steam heater 3 can quickly heat and restore to the preset temperature in the time gap after the previous pulse water flow is evaporated and before the next pulse water flow enters the steam heater 3, thereby ensuring that the self state of the steam heater 3 is almost the same when each pulse water flow enters the steam heater 3, the temperature is not reduced due to the heat absorption caused by the evaporation of the previous water flow, the generated steam is continuous and stable in quality, and further, by controlling the working frequency of the water inlet valve 1 and/or the temperature of the steam heater 3, so as to generate steam with different humidity, and the quality of the generated steam is stable and controllable.
Specifically, in one embodiment, the adjustment of the steam humidity is achieved in a manner that does not change the preset frequency of the water inlet valve 1, but rather changes the preset temperature of the steam heater 3. For example, in a preferred embodiment, the first preset frequency F1 and the second preset frequency F2 are set to be the same, and the first preset temperature T1 is higher than the second preset temperature T2, so that the humidity of the generated first dry humidity steam S1 is lower than the humidity of the second dry humidity steam S2. It can be understood that, in the case of controlling the water inflow by the liquid pump 2 and the water inlet valve 1, the drier steam (i.e. the steam with lower humidity) is pre-generated, the higher the preset temperature value of the steam heater 3 is, and conversely, the wetter steam (i.e. the steam with higher humidity) is pre-generated, the lower the preset temperature value of the steam heater 3 is. In another embodiment, the adjustment of the steam humidity is achieved in such a way that the preset temperature of the steam heater 3 is not changed, but the preset frequency of the water inlet valve 1 is changed. For example, the water inflow in unit time can be different by changing the preset frequency of the water inlet valve 1, and when the steam heater 3 is at the same temperature, the steam generated by the different water inflow in unit time has different humidity, and if the water inflow is large, the humidity of the steam is large, and if the water inflow is small, the humidity of the steam is small; for another example, the same water inlet amount per unit time can be achieved by changing the preset frequency of the water inlet valve 1, but the water amount of each pulse water flow is different, so that the steam humidity generated by the steam heater 3 is different under the same temperature.
Further, in an embodiment, the control method for generating the vapor with different humidity includes: pre-storing an information table of one-to-one correspondence between the steam humidity value and the preset temperature of the steam heater 3; when a steam command for generating a certain preset steam dry-wet value is triggered, the corresponding relation data in the information table is read, and the preset temperature of the steam heater 3 is set according to the corresponding relation data. Through the arrangement, a user can select the dryness and humidity of the generated steam as required, in a specific embodiment, the steam generating system is provided with a plurality of preset gears, each gear corresponds to the steam with the preset dryness and humidity, when the user selects one of the gears, an instruction for generating the steam with the preset dryness and humidity corresponding to the gear is triggered, the corresponding relation data in the information table is read by the controller, and the preset temperature of the steam heater 3 is set according to the corresponding relation data. Then, the steam heater 3 is controlled to heat to a preset temperature and feed water, and steam with preset humidity can be generated. Similarly, in another embodiment, the control method for generating the vapor with different humidity comprises the following steps: pre-storing an information table of one-to-one correspondence between the steam humidity value and the preset frequency of the water inlet valve 1; when a steam instruction of a certain preset steam dry-humidity value is generated through triggering, reading the corresponding relation data in the information table, and setting the preset frequency of the water inlet valve 1 according to the corresponding relation data; in yet another embodiment, an information table of correspondence between a steam humidity value-a preset frequency of the water inlet valve 1-a preset temperature of the steam heater 3 is stored in advance; when a steam command for generating a certain preset steam dry-wet value is triggered, reading the corresponding relation data in the information table, and setting the preset frequency of the water inlet valve 1 and the preset temperature of the steam heater 3 according to the corresponding relation data.
In a specific embodiment, the steam generating system has a plurality of preset gears, each gear corresponds to a steam with a preset dry humidity, when a user selects one of the gears, an instruction for generating the steam with the preset dry humidity corresponding to the gear is triggered, the controller reads the corresponding relation data in the information table, and the preset temperature of the steam heater 3 and/or the preset frequency of the water inlet valve 1 are/is set according to the corresponding relation data. Then, the steam heater 3 is controlled to heat to a preset temperature, and the water inlet valve 1 works at a preset frequency to feed water, so that steam with preset humidity can be generated. In the embodiment, the information table of the one-to-one correspondence relationship between the steam dry-wet value and the preset temperature of the steam heater 3 and/or the preset frequency of the water inlet valve 1 is stored in advance, and corresponding parameters are set according to the information table to control the generation of steam. However, due to the open-loop control, the quality of the generated steam may deviate from the preset quality. For example, when the information table is established, the room temperature of the liquid before entering the steam generating system is calculated to be 20 degrees celsius, and when the liquid is actually used, the liquid may be 5 degrees celsius or 30 degrees celsius, the steam generation control is still performed by using the parameters in the information table, and the dryness and humidity of the generated steam are deviated from the dryness and humidity of the steam to be achieved. Therefore, in another embodiment, the present application provides a real-time detection, closed-loop control method. Specifically, the dry-humidity value of the steam in the stable state is detected, and if the detected dry-humidity value of the steam is different from the preset dry-humidity value of the steam, the preset frequency of the on-off alternate work of the water inlet valve is adjusted or the preset temperature of the steam heater is adjusted. According to the embodiment, through real-time detection and closed-loop control, a corresponding sensor such as a humidity sensor needs to be additionally arranged, the control is dynamic control, and the quality of generated steam is more stable.
In the control method for generating any dry humidity steam, further, the control method further comprises: controlling the steam heater 3 to heat and detecting the actual temperature of the steam heater; and when the actual temperature of the steam heater 3 reaches the preset temperature, controlling the liquid pump 2 and the water inlet valve 1 to work for water inlet. In this embodiment, by preheating the steam heater 3 and controlling the inflow of water when the preheating reaches a predetermined temperature, it is ensured that steam of a predetermined quality can be generated upon inflow of water. Compared with the scheme that the heater is triggered to heat through water inlet in the prior art, the problem that the quality of the early-stage steam is unstable when the steam is discharged can be avoided, and the waste of water resources can be reduced. In this embodiment, the controller automatically triggers the liquid pump 2 and the water inlet valve 1 to feed water according to the detected actual temperature of the steam heater 3, so that accurate water feeding control can be realized, unstable steam quality caused by too early water feeding is avoided, and overheating of the steam heater 3 caused by too late water feeding is avoided.
Referring to fig. 3, in a further improved embodiment, the steam outlet has an open state and a closed state, and in the closed state of the steam outlet, the control method includes: controlling the steam heater 3 to be in a heating state, and controlling the liquid pump 2 and the water inlet valve 1 to intermittently work so as to intermittently feed water into the steam heater 3.
In a specific embodiment, the opening state and the closing state of the steam outlet are manually controlled by a user, so that the user can control the closing and the discharging of the steam at any time. For example, in one embodiment, the liquid is vaporized into steam in the steam heater 3, and then is connected to a gun head held by a user through a steam pipeline, the gun head is provided with a trigger, and the user can tightly hold and release the trigger to switch the opening state and the closing state of the steam outlet.
In the embodiment shown in fig. 3, when the steam outlet is in the closed state, the steam generated in the steam generating system cannot be discharged through the steam outlet, and if a large amount of steam is continuously generated, the pressure in the steam generating system is too high, which affects the safety of the steam generating system and the user. In this embodiment, when the steam outlet is in a closed state, the steam heater 3 is controlled to be in a heating state, and the liquid pump 2 and the water inlet valve 1 are controlled to intermittently operate to intermittently feed water to the steam heater 3. So set up have following beneficial effect: the steam heater 3 is controlled to be still in a heating state, so that steam can be generated in time when a user opens the steam outlet. Because a user often needs to frequently turn on and off the steam when using the steam generating system, when the steam outlet is in a closed state, if the steam heater 3 is controlled not to heat any more, the temperature of the steam heater 3 is reduced, when the steam outlet is in the closed state for a long time, the temperature of the steam heater 3 is reduced more, and when the user turns on the steam outlet again, the steam generated at the time cannot reach the preset quality. For example, in the process of dry-cleaning the laundry using relatively dry steam, the user closes the steam outlet for a certain period of time and then opens the steam outlet again, and at this time, the humidity of the generated steam is relatively high due to the low temperature of the steam heater 3, thereby wetting the laundry. On the other hand, because the steam heater 3 is controlled to be still in a heating state, a large amount of steam can be generated by continuously feeding water, so that the pressure in the steam generating system is too high, and the safety of the steam generating system and a user is influenced; if the liquid pump 2 and the water inlet valve 1 are controlled not to feed water, the temperature of the steam heater 3 is continuously increased, which causes overheating. Based on this, in the present embodiment, on the premise that the steam heater 3 is controlled to be in the heating state, the liquid pump 2 and the water inlet valve 1 are controlled to intermittently operate to intermittently feed water to the steam heater 3. So set up, both avoided continuing into a large amount of steam that the water produced and be difficult to the exhaust problem, avoided steam heater 3 to rise temperature continuously again, caused the overheated problem of dry combustion method.
Further, the controlling the steam heater 3 to be in a heating state and controlling the liquid pump 2 and the water inlet valve 1 to intermittently work to intermittently feed water into the steam heater 3 includes: controlling the steam heater 3 to work and detecting the working state of the steam heater, controlling the liquid pump 2 and the water inlet valve 1 to work to feed water into the steam heater when the working state of the steam heater 3 reaches a preset condition, and controlling the liquid pump 2 and the water inlet valve 1 to stop feeding water into the steam heater 3 when the working state of the steam heater 3 does not reach the preset condition. That is, the process control of the intermittent water intake is automatically triggered by the controller according to the detected working state of the steam heater 3, so that the working state of the steam heater 3 can be well controlled and maintained, the actual working state of the steam heater 3 is prevented from excessively deviating from the working state when the steam heater can generate steam with preset quality, and the quality-controllable steam is ensured to be generated at any time. The preset condition can be one or more of preset time, preset pressure and preset temperature. Preferably, in an embodiment, the operation state of the steam heater 3 reaches the preset condition includes that the actual temperature of the steam heater 3 reaches the preset temperature. That is, whether water is fed or not is controlled by the temperature of the steam heater 3 when the steam outlet is in a closed state, water is fed into the liquid pump 2 and the water inlet valve 1 when the temperature of the steam heater 3 reaches a preset temperature, and the temperature of the steam heater 3 is reduced to be lower than the preset temperature, so that the water is fed into the liquid pump 2 and the water inlet valve 1; and when the temperature of the steam heater 3 is increased to the preset temperature again, controlling the liquid pump 2 and the water inlet valve 1 to feed water again, and repeating the steps to realize intermittent water feeding. In the intermittent water inlet process, water inlet and water inlet stopping are mainly realized by the liquid pump 2, and the water inlet valve 1 is mainly used for realizing a pulse water flow water inlet mode in a water inlet stage. In other words, the frequency of the intermittent operation of the liquid pump 2 and the water inlet valve 1 is less than the preset frequency of the on-off alternative operation of the water inlet valve 1, that is, the water inlet valve 1 still has the process of multiple on-off alternative operations in an intermittent water inlet process.
As can be seen from the above description, although the intermittent water feeding can avoid generating a large amount of steam, the steam still generates. Therefore, further, in this embodiment, the steam generation system further includes a pressure relief valve, and the control method further includes: when the steam pressure in the steam generation system reaches a preset value, the steam is discharged through the pressure release valve to release the pressure.
When the steam outlet is in an opening state, the control method comprises the following steps: controlling the steam heater 3 to be in a heating state, and controlling the liquid pump 2 and the water inlet valve 1 to work to feed water; and the heating of the steam heater 3 and the water inlet relationship controlled by the liquid pump 2 and the water inlet valve 1 are configured in such a way that the heat generated by the steam heater 3 per unit time is not less than the heat consumed by the water inlet controlled by the liquid pump 2 and the water inlet valve 1 per unit time.
That is, when the steam outlet is opened, the liquid is controlled to continuously feed water into the steam heater 3 to ensure the continuity of the generated steam. In order to avoid the temperature drop of the steam heater 3 in the state of continuous water inlet, the heat generated by the steam heater 3 in unit time is not less than the heat consumed by the inlet water controlled by the liquid pump 2 and the water inlet valve 1 in unit time, so that the steam heater 3 can be heated to a preset temperature from a temperature below the preset temperature in the process of continuous water inlet, and can be maintained at the preset temperature after being heated to the preset temperature. The preset temperature may be a temperature interval, the heating to the preset temperature may be heating to a lower limit temperature value of the temperature interval, and the maintaining at the preset temperature may be temperature floating between an upper limit temperature value and a lower limit temperature value of the temperature interval. It should be noted that the continuous water supply described herein is an intermittent water supply with the steam outlet closed, and it should be understood that the continuous water supply does not change the water supply manner of the pulse water flow controlled by the water inlet valve 1.
As can be seen from the above description of the specific embodiments, the control method for generating steam with different humidity and humidity provided by the present application feeds water in a manner of pulse water flow, and each pulse water flow is heated and evaporated in the process of continuously flowing in the steam heater 3, so that the speed of generating steam is fast; moreover, because the water inlet into the steam heater 3 is a pulse-type water flow, the steam heater 3 can be quickly heated and restored to a preset temperature in a time gap between the time when the previous pulse-type water flow is evaporated and the time when the next pulse-type water flow enters the steam heater 3, so that when each pulse-type water flow enters the steam heater 3, the self state of the steam heater 3 is the same, the temperature drop caused by the heat absorption of the evaporation of the front water flow can be avoided, the generated steam is continuous and stable in quality, the steam with different dry humidity can be generated by controlling the working frequency of the water inlet valve 1 and/or the humidity of the steam heater 3, and the quality of the generated steam is stable and controllable.
Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.
Claims (10)
1. A control method for generating vapor with different dryness and humidity, which is applied to a vapor generation system for generating at least two types of vapor with different dryness and humidity, wherein the vapor generation system comprises a liquid inlet, a vapor outlet, and a water inlet valve and a vapor heater which are connected between the liquid inlet and the vapor outlet, the water inlet valve is connected between the liquid inlet and the vapor heater, and the control method comprises the following steps:
controlling the water inlet valve to perform on-off alternate work at a first preset frequency so that the liquid intermittently passes through the water inlet valve, and the liquid passing through the water inlet valve is conveyed to a steam heater at a first preset temperature in a pulse-type water flow manner; each of the pulsed water streams is at least partially vaporized prior to exiting the steam heater to produce a first dry humidity vapor;
controlling the water inlet valve to perform on-off alternate work at a second preset frequency so that the liquid intermittently passes through the water inlet valve, and the liquid passing through the water inlet valve is conveyed to a steam heater at a second preset temperature in a pulse-type water flow manner; each of the pulsed water streams is at least partially vaporized prior to exiting the steam heater to produce a second dry humidity vapor;
wherein the first preset frequency is different from the second preset frequency, and/or the first preset temperature is different from the second preset temperature.
2. The method as claimed in claim 1, wherein the first predetermined frequency and the second predetermined frequency are the same, and the first predetermined temperature is higher than the second predetermined temperature, so that the humidity of the generated first dry humidity steam is lower than that of the second dry humidity steam.
3. The control method for generating steam with different dryness and humidity according to claim 1, wherein the control method comprises: pre-storing an information table of one-to-one correspondence between the steam dry-wet value and the preset temperature of the steam heater and/or the preset frequency of the water inlet valve; and when a steam instruction generating a certain preset steam dry-humidity value is triggered, reading the corresponding relation data in the information table, and setting the preset temperature of the steam heater and/or the preset frequency of the water inlet valve according to the corresponding relation data.
4. The method as claimed in claim 1, wherein the humidity value of the steam at steady state is detected, and if the detected humidity value is different from the humidity value of the steam, the preset frequency of the on/off alternation of the water inlet valve is adjusted or the preset temperature of the steam heater is adjusted.
5. The method of claim 1, wherein the steam generating system further comprises a liquid pump for controlling water supply and stopping water supply, the method comprising: controlling the water inlet valve to alternately work on and off at a preset frequency during the water inlet period of the liquid pump; and controlling the water inlet valve to stop working during the period that the liquid pump stops feeding water.
6. The control method for generating steam with different dryness and humidity according to claim 5, wherein the steam outlet has an open state and a closed state, and in the closed state of the steam outlet, the control method comprises: and controlling the steam heater to be in a heating state, and controlling the liquid pump and the water inlet valve to intermittently work so as to intermittently feed water into the steam heater.
7. The method as claimed in claim 6, wherein the frequency of the intermittent operation of the liquid pump and the water inlet valve is less than the preset frequency of the on/off alternate operation of the water inlet valve.
8. The method as claimed in claim 6, wherein the controlling the steam heater to be in a heating state and the liquid pump and the water inlet valve to intermittently supply water to the steam heater comprises:
controlling the steam heater to work and detecting the actual temperature of the steam heater, controlling the liquid pump and the water inlet valve to work to feed water into the steam heater when the actual temperature of the steam heater reaches a preset temperature, and controlling the liquid pump and the water inlet valve to stop feeding water into the steam heater when the actual temperature of the steam heater does not reach the preset temperature.
9. The method of controlling the generation of vapor of varying dryness according to claim 6, comprising: when the steam pressure in the steam generation system reaches a preset value, the steam is discharged through the pressure release valve to release the pressure.
10. The method as claimed in claim 5, wherein the liquid pump is an electromagnetic pump, the water inlet valve is an electromagnetic valve, and the liquid pump and the water inlet valve are controlled in a linkage manner.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210207082.1A CN114321865A (en) | 2022-03-04 | 2022-03-04 | Control method for generating steam with different dryness and humidity |
| CN202211353298.5A CN115638399A (en) | 2022-03-04 | 2022-11-01 | Control method for generating steam with different dryness and humidity |
| PCT/CN2022/134325 WO2023165181A1 (en) | 2022-03-04 | 2022-11-25 | Steam generation control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210207082.1A CN114321865A (en) | 2022-03-04 | 2022-03-04 | Control method for generating steam with different dryness and humidity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114321865A true CN114321865A (en) | 2022-04-12 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210207082.1A Pending CN114321865A (en) | 2022-03-04 | 2022-03-04 | Control method for generating steam with different dryness and humidity |
| CN202211353298.5A Pending CN115638399A (en) | 2022-03-04 | 2022-11-01 | Control method for generating steam with different dryness and humidity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023165181A1 (en) * | 2022-03-04 | 2023-09-07 | 福建新瓦特科技有限公司 | Steam generation control method |
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| CN206093998U (en) * | 2016-09-23 | 2017-04-12 | 余姚福骏电器有限公司 | Steam system structure |
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| CN110382953A (en) * | 2017-03-13 | 2019-10-25 | 阿尔弗雷德·卡赫欧洲两合公司 | Method for running steam generating device |
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| CN112128723A (en) * | 2020-09-04 | 2020-12-25 | 珠海蓉胜电子材料研究院有限公司 | Annealing furnace steam generator and control method thereof |
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2022
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- 2022-11-01 CN CN202211353298.5A patent/CN115638399A/en active Pending
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| GB314905A (en) * | 1928-07-04 | 1930-03-20 | Bbc Brown Boveri & Cie | Improvements in steam generators |
| JP2004278820A (en) * | 2003-03-12 | 2004-10-07 | Matsushita Electric Ind Co Ltd | Microwave heating device with steam generation function |
| CN102454975A (en) * | 2010-10-26 | 2012-05-16 | 佛山市顺德区盛熙电器制造有限公司 | Steam supply device, hanging-type ironer, steam mop, steam humidifier, steam cleaner and electric food steamer |
| CN206093998U (en) * | 2016-09-23 | 2017-04-12 | 余姚福骏电器有限公司 | Steam system structure |
| CN110382954A (en) * | 2017-03-13 | 2019-10-25 | 阿尔弗雷德·卡赫欧洲两合公司 | Steam generating device with the actuator for power regulation and the method for running steam generating device |
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| WO2023165181A1 (en) * | 2022-03-04 | 2023-09-07 | 福建新瓦特科技有限公司 | Steam generation control method |
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| CN115638399A (en) | 2023-01-24 |
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