WO2023165181A1 - 一种产生蒸汽的控制方法 - Google Patents

一种产生蒸汽的控制方法 Download PDF

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Publication number
WO2023165181A1
WO2023165181A1 PCT/CN2022/134325 CN2022134325W WO2023165181A1 WO 2023165181 A1 WO2023165181 A1 WO 2023165181A1 CN 2022134325 W CN2022134325 W CN 2022134325W WO 2023165181 A1 WO2023165181 A1 WO 2023165181A1
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WO
WIPO (PCT)
Prior art keywords
steam
inlet valve
water inlet
heater
control method
Prior art date
Application number
PCT/CN2022/134325
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English (en)
French (fr)
Inventor
柯兆民
赵忠玮
Original Assignee
福建新瓦特科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202210207081.7A external-priority patent/CN114321864A/zh
Priority claimed from CN202210206772.5A external-priority patent/CN114278916A/zh
Priority claimed from CN202210207082.1A external-priority patent/CN114321865A/zh
Application filed by 福建新瓦特科技有限公司 filed Critical 福建新瓦特科技有限公司
Publication of WO2023165181A1 publication Critical patent/WO2023165181A1/zh

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B35/00—Control systems for steam boilers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D5/00—Controlling water feed or water level; Automatic water feeding or water-level regulators
    • F22D5/26—Automatic feed-control systems
    • F22D5/32—Automatic feed-control systems influencing the speed or delivery pressure of the feed pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D5/00—Controlling water feed or water level; Automatic water feeding or water-level regulators
    • F22D5/26—Automatic feed-control systems
    • F22D5/34—Applications of valves

Definitions

  • the present application relates to the technical field of steam generation, in particular to a method for controlling steam generation.
  • Steam has the characteristics of high temperature, a small amount of liquid water can produce a large amount of steam, etc., and has broad application prospects in the fields of cleaning, disinfection and sterilization.
  • products that clean, disinfect and sterilize by steam such as steam car washers, steam mops, steam disinfection cabinets, steam irons, and garment steamers.
  • the steam generation method in the prior art basically adopts the method of heating and evaporating boiler storage water.
  • the boiler is also a water storage container that can be used for heating. Water is stored in it, and the boiler is heated by means of electric heating or fuel heating, so that the water in the boiler boils to generate steam, and then the generated steam is output through the delivery pipeline.
  • the steam generation speed is relatively slow.
  • the volume of the boiler is also set to be small, and water is added to the boiler again after the liquid in the boiler evaporates, so as to speed up the steam generation.
  • the steam produced in this way is discontinuous.
  • the dry humidity of the steam produced in the prior art is difficult to control, and the steam usually has high humidity, which cannot be applied to the situation where dry steam is required; It is difficult to reach a higher temperature, and it is difficult to apply to situations that require high-temperature steam.
  • the quality of the steam produced by the existing technology is difficult to be precisely controlled, which leads to the limitation of the function and user experience of steam household products currently on the market.
  • the present application provides a control method for generating steam, which can generate continuous steam with stable and controllable quality.
  • a control method for generating steam which is applied to a steam generating system
  • the steam generating system includes a liquid inlet, a steam outlet, a liquid pump connected between the liquid inlet and the steam outlet, and a water inlet valve and a steam heater
  • the water inlet valve is connected between the liquid inlet and the steam heater
  • the liquid pump is connected between the water inlet valve and the steam heater
  • the Control methods include:
  • each of the pulsed water flows continuously in the steam heater, and is at least partially vaporized to generate steam before flowing out of the steam heater.
  • At least a part of the pipeline between the water inlet valve and the liquid pump close to the liquid pump is a filling section filled with liquid.
  • control method further includes: S3, controlling the heating of the steam heater, and detecting its actual temperature; when the actual temperature of the steam heater reaches a preset temperature, performing the above steps of S1 and S2 .
  • the steam outlet has an open state and a closed state
  • the control method includes: controlling the steam heater to be in a heating state, and controlling the liquid pump and The water inlet valve works intermittently to intermittently feed water to the steam heater.
  • the control method when the steam outlet is in a closed state, includes: controlling the steam heater to be in a heating state and detecting the actual temperature of the steam heater, when the actual temperature of the steam heater is When the temperature reaches the first preset temperature, the liquid pump is controlled to feed water into the steam heater, and when the actual temperature of the steam heater does not reach the first preset temperature, the liquid pump is controlled to stop Water is introduced into the steam heater.
  • the time period for which the actual temperature of the steam heater is below the first preset temperature is longer than the time period for which the actual temperature is the first preset temperature.
  • the control method when the steam outlet is in an open state, includes: controlling the steam heater to be in a heating state, and controlling the liquid pump to continuously work to feed water into the steam heater and the relationship between the heating of the steam heater and the water intake of the liquid pump is configured such that the heat generated by the steam heater per unit time is not less than the heat consumed by the water intake of the liquid pump per unit time .
  • the control method when the steam outlet is in an open state, includes: controlling the steam heater to be in a heating state, and controlling the liquid pump to continuously work to feed water into the steam heater; The actual temperature of the steam heater is detected, and when the actual temperature of the steam heater reaches a second preset temperature, the steam heater is controlled to maintain the second preset temperature.
  • the first preset temperature is not less than the second preset temperature
  • the second preset temperature is a temperature range.
  • the steam generation system includes a steam gun head, the steam outlet is arranged in the steam gun head, and the steam gun head has a function for controlling the steam outlet between the open state and the closed state. Switched trigger.
  • a mechanical switch and an electric switch are arranged inside the steam gun head, and the mechanical switch is arranged at the steam outlet for controlling the opening and closing of the steam outlet, and the electric switch is connected with the steam outlet.
  • the liquid pump is electrically connected to control the operation of the liquid pump, and the trigger simultaneously drives the mechanical switch and the electric switch.
  • the frequency at which the liquid pump and the water inlet valve work intermittently is less than the preset frequency at which the water inlet valve works alternately on and off.
  • control method includes: when the steam pressure in the steam generation system reaches a preset value, discharging steam through a pressure relief valve to release the pressure.
  • the liquid pump is an electromagnetic pump
  • the water inlet valve is an electromagnetic valve
  • the electromagnetic pump and the electromagnetic valve are controlled in linkage.
  • control method includes: detecting the quality parameter information of the generated steam, and the operating parameter information of the steam heater and/or the water inlet valve; if the quality parameter information of the steam is detected If the preset requirement is not met, the operating parameter information of the steam heater and/or the water inlet valve is adjusted until the detected quality parameter information of the steam meets the preset requirement.
  • the quality parameter information of the steam includes the humidity value of the steam
  • the operating parameter information of the steam heater includes the temperature value of the steam heater; when it is detected that the humidity value of the steam is greater than the preset When the humidity value under the requirement is set, the temperature value of the steam heater is increased; when the humidity value of the steam is detected to be lower than the humidity value under the preset requirement, the temperature of the steam heater is lowered value.
  • the operating parameter information of the water inlet valve includes at least one of the on-off frequency, on-off time, and water intake of the water inlet valve.
  • control method further includes: detecting the temperature of the liquid before entering the steam generation system, and setting the preset target temperature of the steam heater according to the temperature of the liquid; when the steam When the actual temperature of the heater reaches the preset target temperature, the water inlet valve is controlled to work alternately to feed water into the steam heater.
  • control method includes:
  • the water inlet valve is controlled to alternately work on and off at a first preset frequency, so that the liquid passes through the water inlet valve intermittently, and the liquid after passing through the water inlet valve is sent to the heating system in a pulsed flow. state of the steam heater; each of said pulsed water streams is at least partially vaporized before flowing out of said steam heater to produce a first dry humidity steam;
  • the water inlet valve is controlled to alternately work on and off at a second preset frequency, so that the liquid passes through the water inlet valve intermittently, and the liquid after passing through the water inlet valve is sent to the heating system in a pulsed flow.
  • each of said pulsed water streams is at least partially evaporated before flowing out of said steam heater to generate a second dry humidity 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.
  • control method includes:
  • the pulsed water flow is sent to the steam heater in the heating state to be evaporated and vaporized to generate the first dry humidity steam;
  • the pulsed water flow is sent to the steam heater in the heating state to be evaporated and vaporized to generate the second dry humidity steam;
  • the first pulsed water flow and the second pulsed water flow are continuous water flows with alternating strength and weakness, a strong water flow section of pulsed water flow is formed when the water inlet valve is opened, and a pulsed water flow is formed when the water inlet valve is turned off. weak water flow section;
  • the second on-time length is shorter than the first on-time length, and the second off-time length is longer than the first off-time length, the humidity of the second dry humidity steam generated is less than that of the first dry humidity steam generated humidity.
  • control method includes: pre-storing an information table of a one-to-one correspondence between the steam dry humidity value and the preset temperature of the steam heater and/or the preset frequency of the water inlet valve; When there is a steam command for a preset steam dry humidity value, read the corresponding relationship data in the information table, and set the preset temperature of the steam heater and/or the preset frequency of the water inlet valve accordingly .
  • the steam generation control method provided in the present application controls the liquid to be sent to the steam heater in the heating state in the form of pulsed water flow, wherein each of the pulsed water flows continuously flows in the steam heater, and when it flows out of the steam heater The steam heater is at least partially vaporized prior to the steam heater.
  • the water is fed in the form of pulsed water flow, and each pulsed water flow is heated and evaporated during the continuous flow in the steam heater, so that the speed of steam generation is fast, the steam generated is continuous and the quality is stable controllable.
  • Fig. 1 is a perspective view of a steam generating system applied to a control method of the present application in a steam device.
  • Fig. 2 is a schematic diagram of a steam generation system applied to the control method of the present application.
  • Fig. 3 is a flowchart of an embodiment of the control method of the present application.
  • Fig. 4 is a flow chart of another embodiment of the control method of the present application.
  • Fig. 5 is a flowchart of another embodiment of the control method of the present application.
  • the present application provides a method for controlling steam generation, which is applied to a steam generation system.
  • Fig. 1 and Fig. 2 it is a diagram of an embodiment of a steam generating system applied to the control method for generating steam of the present application.
  • the steam generation system includes a liquid inlet 1, a steam outlet 2, a liquid pump 3 connected between the liquid inlet 1 and the steam outlet 2, a water inlet valve 4 and a steam heater 5, the inlet The water valve 4 is connected between the liquid inlet 1 and the steam heater 5 .
  • the liquid inlet 1, the water inlet valve 4, the liquid pump 3, the steam heater 5 and the steam outlet 2 are connected by pipelines, the liquid enters from the liquid inlet 1, and enters the steam heating through the water inlet valve 4 and the liquid pump 3 in turn It is heated and evaporated into steam in the container 5, and then discharged through the steam outlet 2.
  • the liquid pump 3, that is, the water pump is used to realize the control of water intake or stop water intake.
  • the liquid pump 3 is an electromagnetic pump.
  • the water inlet valve 4 is used to realize the control of the water inlet amount and water inlet mode.
  • the water inlet valve 4 is a solenoid valve.
  • the liquid pump 3 is connected between the water inlet valve 4 and the steam heater 5, and the liquid pump 3 generates pressure to drive the liquid to flow into the steam heater 5 during operation. It is directly connected with the steam heater 5, so the pressure it generates needs to be sufficient to overcome the pressure in the pipeline at the end of the steam heater 5 connected to the liquid pump 3, so as to avoid reverse flow; and the water inlet valve 4 and the steam heater 5 are due to There is a liquid pump 3, which also protects the water inlet valve 4 from the steam pressure from the steam heater 5, ensuring the life of the water inlet valve 4 and the stability of the working performance.
  • the liquid pump 3 and the water inlet valve 4 are controlled by related signals, so as to ensure the linkage compatibility between the two.
  • the control method includes: S1, control the operation of the liquid pump 3 to drive the liquid from the liquid inlet 1 through the water inlet valve 4 and the liquid pump 3 to the heated Steam heater 5; S2.
  • control the water inlet valve 4 to alternately work on and off at a preset frequency, so that the liquid passes through the water inlet valve 4 intermittently , the liquid after passing through the water inlet valve 4 is delivered to the steam heater 5 in pulsed water flow; wherein, each pulsed water flow continues to flow in the steam heater 5, and when it flows out of the The steam heater 5 was previously at least partially vaporized to generate steam.
  • water is fed in the form of pulsed water flow, and each pulsed water flow is heated and evaporated during the continuous flow in the steam heater 5, so that the speed of steam generation is fast.
  • the water inflow to the steam heater 5 is a pulsed water flow, specifically the pulsed water flow has a continuous water flow that alternately changes in strength one by one, so that the water flow enters the steam heater 5, so that the steam
  • the heater 5 can quickly heat up and return to the equilibrium temperature that can produce stable quality steam during the time gap between after the "peak section" of the previous pulsed water flow is evaporated and before the arrival of the "peak section” of the next pulsed water flow , so as to ensure that when each pulsed water flow enters the steam heater 5, the state of the steam heater 5 is the same or almost the same, and the temperature will not drop due to the evaporation and heat absorption of the water flow in front, so that the generated
  • the steam can be dry steam with low humidity, and the steam is continuous and the quality is stable and controllable.
  • the liquid pump 3 since the liquid pump 3 is arranged between the water inlet valve 4 and the steam heater 5, and in the process of controlling the water inlet, the liquid pump 3 is continuously turned on instead of intermittently turned on, so that the liquid pump 3. It can continuously provide water pressure to prevent the steam backflow in the steam heater 5.
  • the liquid pump 3 does not need to be started and stopped frequently, and is not easy to be damaged; the water inlet valve 4 only provides the function of breaking the water flow, and does not need to provide the drive for the liquid flow. Therefore, the starting of the water inlet valve 4 does not require a large starting force, and the on-off frequency of the water inlet valve 4 can be much higher than the on-off frequency that the liquid pump 3 can bear.
  • the pipeline between the water inlet valve 4 and the liquid pump 3 is filled with liquid or at least a section close to the liquid pump 3 is filled with liquid.
  • the water inlet valve 4 is turned on and off. Alternate work makes the liquid between the water inlet valve 4 and the liquid pump 3 be in two alternate environmental states, that is, the state where the liquid pump 3 is open and the water inlet valve 4 is also open, and the liquid pump 3 is open and the water inlet valve is open. 4 is the state under shutdown.
  • liquid pump 3 When the liquid pump 3 is turned on and the water inlet valve 4 is also turned on, the liquid between the liquid pump 3 and the water inlet valve 4 is in a state where both ends are unblocked, and the driving force provided by the liquid pump 3 can drive the liquid pump A certain amount of liquid between 3 and water inlet valve 4 is discharged to steam heater 5 through liquid pump 3, and at the same time, the liquid from liquid inlet 1 can be pumped into liquid pump 3 and water inlet valve through water inlet valve 4 between 4.
  • the liquid pump 3 drives the liquid to flow into the steam heater 5, and the water intake in the steam heater 5 is relatively large, forming the strong The part of a strong current in a weakly varying pulsating current.
  • the liquid pump 3 is turned on and the water inlet valve 4 is turned off, the upstream of the liquid between the liquid pump 3 and the water inlet valve 4 is turned off, and the liquid between the liquid pump 3 and the water inlet valve 4 is now In an environment where one end is closed, the liquid pump 3 drives the liquid to flow into the steam heater 5 at this time and needs to overcome the negative pressure.
  • the liquid pump 3 drives the liquid to flow into the steam heater 5.
  • the water intake is relatively small, forming the The weak current part of the pulsating water flow that changes in strength and weakness.
  • the water inlet valve 4 is repeatedly turned on and off at a certain frequency, the water flow after the liquid pump 3 is continuously pulsed with varying strengths and sent to the steam heater 5 .
  • the steam produced will not have obvious discontinuity or The amount of steam varies from time to time, and the generated steam is continuous and stable.
  • the control method for generating steam further includes: S3, controlling the heating of the steam heater 5, and detecting its actual temperature; when the When the actual temperature of the steam heater 5 reaches the preset temperature, the above steps S1 and S2 are executed.
  • the steam of the preset quality can be generated by ensuring the water intake.
  • the steam quality includes the dry humidity of the steam
  • the setting of the preset temperature is related to the amount of water inflow controlled by the liquid pump 3 and the water inlet valve 4 and the desired dry humidity of the steam.
  • the drier steam that is, steam with less humidity
  • the wetter steam ie steam with higher humidity
  • the controller automatically triggers the liquid pump 3 and the water inlet valve 4 to work and feed water according to the detected actual temperature of the steam heater 5, which can realize water inlet control with precise timing and avoid overheating.
  • the steam quality caused by early water intake is unstable, and the dry burning and overheating of the steam heater 5 caused by too late water intake is avoided.
  • the steam outlet 2 has an open state and a closed state, and when the steam outlet 2 is in the closed state, the The control method includes: controlling the steam heater 5 to be in a heating state, and controlling the liquid pump 3 and the water inlet valve 4 to work intermittently to feed water to the steam heater 5 intermittently.
  • the open state and closed state of the steam outlet 2 are manually controlled by the user, so that the user can control the shut-off and discharge of the steam at any time.
  • the steam gun head 6 held by the user through a steam pipeline, and the steam outlet 2 is arranged on the steam gun head 6.
  • the steam gun head 6 has a trigger 61 , and the user grips and releases the trigger 61 to switch the steam outlet 2 from an open state to a closed state.
  • the steam gun head 6 is provided with a mechanical switch and an electric switch
  • the mechanical switch is provided at the steam outlet 2 for controlling the opening and closing of the steam outlet 2
  • the electric switch is electrically connected with the liquid pump 3 for controlling the operation of the liquid pump, and the trigger simultaneously drives the mechanical switch and the electric switch.
  • the steam outlet 2 Since the user often needs to turn on and off the steam frequently when using the steam generating system, when the steam outlet 2 is in a closed state, if the steam heater 5 is no longer heated at this time, the temperature of the steam heater 5 will drop. When the steam outlet 2 is in the closed state for a long time, the temperature of the steam heater 5 drops more. At this time, when the user opens the steam outlet 2 again, the steam produced at this time cannot reach the preset quality. For example, in the process of dry-cleaning clothes with dry steam, the user closes the steam outlet 2 for a period of time, and then opens the steam outlet 2 again. At this time, due to the lowering of the temperature of the steam heater 5, the humidity of the generated steam is relatively high. , causing the clothes to get wet.
  • the steam heater 5 is controlled to be still in the heating state, a large amount of steam will be generated by continuous water intake, causing the pressure in the steam generation system to be too high, which will affect the safety of the steam generation system and users; and if the liquid pump is controlled 3 and water inlet valve 4 do not enter water, then steam heater 5 continues to heat up, can cause dry burning overheating.
  • the liquid pump 3 and the water inlet valve 4 are controlled to work intermittently so as to intermittently feed water to the steam heater 5 .
  • Such setting not only avoids the problem that a large amount of steam generated by continuous water inflow is difficult to discharge, but also avoids the problem that the steam heater 5 continues to heat up, resulting in dry burning and overheating.
  • controlling the steam heater 5 to be in a heating state, and controlling the liquid pump 3 and the water inlet valve 4 to work intermittently to feed water intermittently to the steam heater 5 includes: controlling the The steam heater 5 works and detects its working state. When the working state of the steam heater 5 reaches the preset condition, the liquid pump 3 and the water inlet valve 4 are controlled to work to supply the steam heater 5 Water intake, when the working state of the steam heater 5 does not reach the preset condition, control the liquid pump 3 and the water inlet valve 4 to stop water intake to the steam heater 5 .
  • the process control of intermittent water intake is automatically triggered by the controller according to the detected operating state of the steam heater 5, so that the operating state of the steam heater 5 can be well controlled and maintained, and the actual failure of the steam heater 5 can be avoided.
  • the working state deviates too much from the working state when it can produce steam with preset quality, so as to ensure the production of steam with controllable quality at any time.
  • the working state reaching the preset condition may be one or more of preset time, preset pressure, and preset temperature.
  • the working state of the steam heater 5 reaching a preset condition includes that the actual temperature of the steam heater 5 reaches a first preset temperature.
  • the temperature of the steam heater 5 is used to control whether the water enters or not, and when the temperature of the steam heater 5 reaches the first preset temperature, the liquid pump 3 and the water inlet valve 4 are controlled to enter water, now the temperature of the steam heater 5 will drop below the first preset temperature, then the liquid pump 3 and the water inlet valve 4 will stop water intake; when the temperature of the steam heater 5 is raised to the first preset temperature again, Control the liquid pump 3 and the water inlet valve 4 to feed water again, and so on repeatedly to realize intermittent water intake.
  • the steam outlet 2 when the steam outlet 2 is in the closed state, the steam is not rushing out at this time, and the temperature is used to control the water intake to ensure that the steam "temporarily stored" in the system is almost in the preset quality state; at the steam outlet When it is in the open state, steam is urgently needed at this time, and because there is “temporary” steam in the system when the steam outlet is in the closed state, the steam can be ejected immediately for use, and at the same time, water is fed to generate steam to ensure that the steam will not be generated. delay.
  • the water intake and stop are mainly realized by the liquid pump 3, and the water intake valve 4 is mainly used to realize the water intake mode of pulsed water flow in the water intake stage.
  • the frequency at which the liquid pump 3 and the water inlet valve 4 work intermittently is less than the preset frequency at which the water inlet valve 4 alternately operates on and off, that is, during an intermittent water inlet process, the water inlet Valve 4 still has a process of alternately working on and off multiple times.
  • the steam generation system also includes a pressure relief valve 7, and the control method further includes: when the steam pressure in the steam generation system reaches a preset value, discharge the steam through the pressure relief valve 7 Steam to relieve pressure.
  • the control method includes: controlling the steam heater 5 to be in a heating state, and controlling the liquid pump 3 and the water inlet valve 4 to work for water intake; and the steam heating
  • the relationship between the heating of the heater 5 and the water intake controlled by the liquid pump 3 and the water inlet valve 4 is configured such that the heat generated by the steam heater 5 per unit time is not less than that controlled by the liquid pump 3 and the water inlet valve 4 The heat consumed by the incoming water per unit time.
  • the liquid is controlled to continuously feed into the steam heater 5 to ensure continuous steam generation.
  • the heat generated by the steam heater 5 per unit time in order to avoid the temperature drop of the steam heater 5, it is necessary to set the heat generated by the steam heater 5 per unit time to be not less than the water intake controlled by the liquid pump 3 and the water inlet valve 4 within a unit time
  • the consumed heat is such that the steam heater 5 can heat up from a temperature below the preset temperature to the preset temperature during the continuous water intake process, and maintain the preset temperature after rising to the preset temperature.
  • the preset temperature may be a temperature range
  • the temperature rising to the preset temperature may refer to heating to the lower limit temperature value of the temperature range
  • the maintaining at the preset temperature may refer to the temperature being at the upper limit of the temperature range Floating between the temperature value and the lower limit temperature value.
  • the continuous water inflow described here is relative to the intermittent water inflow when the steam outlet 2 is in a closed state. It should be understood that the so-called continuous water inflow here does not change the The water intake mode of the pulsed water flow controlled by the water valve 4.
  • the control method includes: controlling the steam heater 5 to be in a heating state, controlling the liquid pump 3 to continuously work to feed water into the steam heater 5; detecting the The actual temperature of the steam heater 5, when the actual temperature of the steam heater 5 reaches the second preset temperature, the steam heater is controlled to maintain the second preset temperature.
  • the first preset temperature is not less than the second preset temperature, and the second preset temperature is a temperature range.
  • the steam generation control method provided in this application can be used to generate one or more steams in preset dry humidity state, the steam in preset dry humidity state is controlled by the preset frequency and The heating of the steam heater 5 is matched with each other.
  • the water inlet valve 4 is controlled to perform alternate on-off operation at the first preset frequency
  • the liquid passing through the water inlet valve 4 is sent to the steam heater 5 at the first preset temperature in a pulsed water flow , to generate the first dry humidity steam
  • the water inlet valve 4 is controlled to alternately work on and off at the second preset frequency
  • the liquid passing through the water inlet valve 4 is sent to the second preset temperature in the steam heater 5 to generate the second dry humidity steam
  • the first preset frequency is different from the second preset frequency
  • the first preset temperature is different from the first preset temperature
  • Two preset temperatures can realize that the dry humidity of the first dry humidity steam is different from that of the second dry humidity steam.
  • the water inlet valve 4 preset frequency, but in the way of changing the preset temperature of steam heater 5.
  • the first preset frequency is set to be 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 the first preset temperature.
  • Two dry humidity The humidity of the steam.
  • control method for generating steam with different dry humidity includes:
  • both the first pulsed water flow and the second pulsed water flow are continuous water flows with alternating strength and weakness, a strong water flow section of pulsed water flow is formed when the water inlet valve 4 is turned on, and a strong water flow section is formed when the water inlet valve 4 is turned off. Weak water flow section of pulse water flow;
  • the second on-time length is shorter than the first on-time length, and the second off-time length is longer than the first off-time length, the humidity of the second dry humidity steam generated is less than that of the first dry humidity steam generated humidity.
  • the pulsed water flow formed by the control method of the present application is a continuous water flow with strength changes
  • the reduction of the water intake in the strong water flow section is caused by the reduction of the opening time of the water inlet valve 4
  • the value range of the opening time of the water inlet valve is 0.01-0.2s
  • the value range of the off-time length of the water inlet valve is 1-0.2s. 3s.
  • the quality of the steam generated can be changed, for example, steam with different dry humidity can be generated.
  • the opening time of the water inlet valve 4 is 0.1s, and the closing time is 1.3s, and so on alternately;
  • the opening time of the water inlet valve is 0.05s, and the closing time is 1.6s, which is repeated alternately.
  • the heating power of the steam heater 5 when the first dry humidity steam is generated is the same as the heating power of the steam heater 5 when the second dry humidity steam is generated. That is, when steam with different dry humidity is generated, the heating power of the steam heater 5 is not controlled differently, but is only realized by adjusting the water inlet state through the water inlet valve 4 .
  • the temperature of the steam heater 5 can be maintained at the corresponding equilibrium temperature when steam with different dry humidity is generated range, for example, when generating a relatively humid steam, the equilibrium temperature range of the steam heater 5 is 180°C-190°C; when generating a relatively dry steam, the equilibrium temperature range of the steam heater 5 is It is 240°C-250°C.
  • the steam heater 5 is also provided with an overheating protection device, so that the steam heater 5 When the temperature reaches the overheating protection temperature (for example, 280° C.), the heating of the steam heater 5 is stopped.
  • the overheat protection device includes a temperature sensor, the temperature sensor is electrically connected to the controller of the steam heater 5, and the controller controls the steam heater 5 according to the temperature detected by the temperature sensor.
  • the heating power of the steam heater 5 is not controlled differently, so the control process is simple. More importantly, such control will be more precise, because in order to make the steam heater 5 have better thermal efficiency and reduce heat loss, better thermal insulation measures are often set for the steam heater 5, such as setting heat insulation cotton, etc.;
  • the steam heater 5 has good thermal insulation performance, which makes its temperature change insensitive. By changing the heating power of the steam heater 5, the temperature of the steam heater 5 cannot be changed quickly enough to produce preset dryness. humidity steam temperature.
  • the steam heater 5 can reach a state of thermal equilibrium with the incoming water through the control of the amount and state of the incoming water, so that the steam heater 5 can be maintained in an equilibrium temperature range that can generate a certain dry humidity steam.
  • This embodiment provides a control method that can generate steam with adjustable quality, specifically by controlling the water inlet valve 4 to alternately work on and off at a certain frequency to realize the water inlet mode of pulsed water flow.
  • the water inlet valve 4 controls the water inlet valve 4 to alternately work on and off at a certain frequency to realize the water inlet mode of pulsed water flow.
  • the quality parameter information of the steam is detected, and the operating parameter information of the water inlet valve is dynamically adjusted to keep the steam The quality is stable.
  • control method includes: detecting the quality parameter information of the generated steam, and the operating parameter information of the steam heater 5 and/or the water inlet valve 4; if it is detected that the quality parameter information of the steam is not If the preset requirement is met, the operating parameter information of the steam heater 5 and/or the water inlet valve is adjusted until the detected quality parameter information of the steam meets the preset requirement.
  • the quality parameter information of the steam includes the humidity value of the steam
  • the operating parameter information of the steam heater 5 includes the temperature value of the steam heater 5; when it is detected that the humidity value of the steam is greater than the preset When the humidity value under the requirement is lower, the temperature value of the steam heater is increased; when the humidity value of the steam is detected to be lower than the humidity value under the preset requirement, the temperature value of the steam heater is lowered .
  • the operating parameter information of the water inlet valve 4 includes at least one of the on-off frequency, on-off time, and water intake of the water inlet valve 4 .
  • the control method also includes pre-calculating steam heating The target temperature of device 5, and carry out the step of preheating.
  • the control method includes: detecting the temperature of the liquid before entering the steam generation system, and setting the preset target temperature of the steam heater 5 according to the temperature of the liquid; when the steam heater 5 When the actual temperature reaches the preset target temperature, the water inlet valve 4 is controlled to work alternately to feed water into the steam heater 5 .
  • the approximate temperature value of the steam heater 5 corresponding to the steam quality to be achieved is preliminarily calculated based on this most important factor in this embodiment, that is, the preset Set the target temperature, and control the water intake when the actual temperature of the steam heater 5 reaches the temperature.
  • the preset Set the target temperature the target temperature of the steam heater 5
  • the preset temperature of the steam heater 5 can be adjusted through the above steps. It can be quickly adjusted to achieve the desired steam quality, and the user experience is better.
  • control method for generating steam with stable quality includes: controlling the liquid pump 3 to be turned on, and during the time when the liquid pump 3 is turned on, controlling the water inlet valve 4 to alternate on and off at a preset frequency Work to form a pulsed water flow, which is sent to the steam heater 5 in the heating state to be evaporated and vaporized to generate steam; wherein, in one on-off cycle of the water inlet valve 4, the open state of the water inlet valve 4 lasts for the first duration, the shutdown state lasts for a second duration;
  • Detect the quality parameter information of the generated steam if it is detected that the quality parameter information of the steam does not meet the preset requirements, then control the water inlet valve 4 to change the first duration of the open state and the second duration of the closed state. duration until the detected quality parameter information of the steam satisfies the preset requirement.
  • the quality parameter information of the steam includes the humidity value of the steam; the controlling the water inlet valve 4 to change the first duration of its on-state duration and the second duration of its off-state duration includes: controlling the water inlet valve 4 The first duration of the open state is increased and the second duration of the off state is controlled to decrease, or the first duration of the open state of the water inlet valve 4 is controlled to decrease and the off state is controlled to last Second duration increased.
  • a one-way valve 8 is provided between the liquid pump 3 and the steam heater 5 for one-way communication from the liquid pump 3 to the direction of the steam heater 5 . The setting of the one-way valve 8 can avoid the reverse flow of the steam, and is more conducive to the water intake mode of the pulsed water flow.
  • control method for generating steam controls the liquid to be sent to the steam heater 5 in a heating state in the form of a pulsed water flow, wherein each pulsed water flow is in the The flow continues in the steam heater 5 and is at least partially vaporized before flowing out of the steam heater 5 .
  • water is fed in the form of pulsed water flow, and each pulsed water flow is heated and evaporated during the continuous flow in the steam heater 5, so that the speed of steam generation is fast, and the steam produced is continuous and of high quality. Stable and controllable.

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Abstract

一种产生蒸汽的控制方法，应用于蒸汽产生系统，蒸汽产生系统包括液体进口（1）、蒸汽出口（2），以及连接于液体进口（1）和蒸汽出口（2）之间的液体泵（3）、进水阀（4）和蒸汽加热器（5），进水阀（4）连接于液体进口（1）和蒸汽加热器（5）之间，控制方法包括：S1、控制液体泵（3）工作以驱动液体从液体进口（1）经过进水阀（4）输送至处于加热状态的蒸汽加热器（5）；S2、在液体泵（3）的工作期间内，控制进水阀（4）以预设频率进行通断交替工作，以使得液体呈间断式通过进水阀（4），通过进水阀（4）后的液体呈脉冲式水流输送至蒸汽加热器（5）中；其中，每一脉冲式水流在蒸汽加热器（5）内持续流动，且在流出蒸汽加热器（5）之前至少部分被蒸发汽化。所述的产生蒸汽的控制方法可产生连续的、品质稳定的蒸汽。

Description

一种产生蒸汽的控制方法 技术领域
本申请涉及蒸汽发生技术领域，具体涉及一种产生蒸汽的控制方法。
背景技术
蒸汽具有温度高，少量液体水可以产生大量蒸汽等特点，在清洁清洗、消毒杀菌领域具有广泛的应用前景。现有技术中已有通过蒸汽进行清洁、消毒杀菌的产品应用，如蒸汽洗车机、蒸汽拖把、蒸汽消毒柜、蒸汽熨斗、蒸汽挂烫机等。
然而，现有技术中的蒸汽产生方式基本是采用锅炉储水加热蒸发的方式。锅炉也即可用于加热的储水容器，其内存储有水，采用电加热或燃料加热等方式加热锅炉，使得锅炉内的水沸腾产生蒸汽，而后通过输送管路将产生的蒸汽输出。采用锅炉加热的方式，由于需要将锅炉内的水全部加热沸腾，因而蒸汽产生速度较慢。现有技术中也有采用将锅炉的容积设置得较小，并在锅炉内的液体蒸发后再次向锅炉内加水的方式，以加快蒸汽产生的速度。然而，这种方式产生的蒸汽不连续。而且，现有技术中产生的蒸汽的干湿度难以控制，其蒸汽通常湿度较大，无法应用于需要使用干蒸汽的情形；而且由于其是湿度较大的气液混合态的蒸汽，温度也常常难以达到较高的温度，难以应用于需要高温蒸汽的情形。总体而言，现有技术产生的蒸汽，其品质难以精确控制，导致目前市场上蒸汽家用产品的功能和使用体验受限。
鉴于此，有必要提出一种新的技术方案，以解决上述技术问题。
发明内容
本申请提供一种产生蒸汽的控制方法，可产生连续地、品质稳定可控的蒸汽。
本申请通过如下技术方案实现：一种产生蒸汽的控制方法，应用于蒸汽产生系统，所述蒸汽产生系统包括液体进口、蒸汽出口，以及连接于液体进口和蒸汽出口之间的液体泵、进水阀和蒸汽加热器，所述进水阀连接于所述液体进口和所述蒸汽加热器之间，所述液体泵连接在所述进水阀和所述蒸汽加热器之间，其中，所述控制方法包括：
S1、控制所述液体泵工作以驱动液体从所述液体进口经过所述进水阀输送至处于加热状态的所述蒸汽加热器；
S2、在所述液体泵的工作期间内，控制所述进水阀以预设频率进行通断交替工作，以使得所述液体呈间断式通过所述进水阀，通过所述进水阀后的液体经过液体泵呈脉冲式水流输送至所述蒸汽加热器中；
其中，每一所述脉冲式水流在所述蒸汽加热器内持续流动，且在流出所述蒸汽加热器之前至少部分被蒸发汽化生成蒸汽。
作为进一步改进的方案，所述进水阀和所述液体泵之间的管路至少靠近所述液体泵的部分为充满液体的充盈段。
作为进一步改进的方案，所述控制方法还包括：S3、控制所述蒸汽加热器加热，并检测其实际温度；当所述蒸汽加热器的实际温度达到预设温度时，执行上述S1、S2步骤。
作为进一步改进的方案，所述蒸汽出口具有开通状态和闭合状态，在所述蒸汽出口处于闭合状态下，所述控制方法包括：控制所述蒸汽加热器处于加热状态，并控制所述液体泵和所述进水阀间歇工作以向所述蒸汽加热器间歇式进水。
作为进一步改进的方案，在所述蒸汽出口处于闭合状态下，所述控制方法包括：控制所述蒸汽加热器处于加热状态并检测所述蒸汽加热器的实际温 度，当所述蒸汽加热器的实际温度达到第一预设温度时，控制所述液体泵向所述蒸汽加热器中进水，并在当所述蒸汽加热器的实际温度未达第一预设温度时，控制所述液体泵停止向所述蒸汽加热器中进水。
作为进一步改进的方案，在所述蒸汽出口处于闭合状态下，所述蒸汽加热器的实际温度处于第一预设温度以下的时长大于其实际温度为第一预设温度的时长。
作为进一步改进的方案，在所述蒸汽出口处于开通状态下，所述控制方法包括：控制所述蒸汽加热器处于加热状态，并控制所述液体泵持续工作以向所述蒸汽加热器中进水；且所述蒸汽加热器的加热与所述液体泵的进水关系被配置为，所述蒸汽加热器单位时间内产生的热量不小于所述液体泵的进水在单位时间内所消耗的热量。
作为进一步改进的方案，在所述蒸汽出口处于开通状态下，所述控制方法包括：控制所述蒸汽加热器处于加热状态，控制所述液体泵持续工作以向所述蒸汽加热器中进水；检测所述蒸汽加热器的实际温度，当所述蒸汽加热器的实际温度达到第二预设温度时，控制所述蒸汽加热器维持在所述第二预设温度。
作为进一步改进的方案，所述第一预设温度不小于所述第二预设温度，所述第二预设温度为一温度区间。
作为进一步改进的方案，所述蒸汽产生系统包括蒸汽枪头，所述蒸汽出口设于所述蒸汽枪头内，所述蒸汽枪头具有用于控制所述蒸汽出口在开通状态和闭合状态之间切换的扳机。
作为进一步改进的方案，所述蒸汽枪头内设有机械开关和电开关，所述机械开关设于所述蒸汽出口处，用于控制所述蒸汽出口的开通与闭合，所述电开关与所述液体泵电性连通，用于控制液体泵工作，所述扳机同时驱动所述机械开关和所述电开关。
作为进一步改进的方案，所述液体泵和所述进水阀间歇工作的频率小于所述进水阀进行通断交替工作的预设频率。
作为进一步改进的方案，所述控制方法包括：当所述蒸汽产生系统内的蒸汽压力达到预设值时，通过泄压阀排出蒸汽以泄压。
作为进一步改进的方案，所述液体泵为电磁泵，所述进水阀为电磁阀，所述电磁泵与所述电磁阀为联动控制。
作为进一步改进的方案，所述控制方法包括：检测生成的蒸汽的品质参数信息，以及所述蒸汽加热器和/或所述进水阀的运行参数信息；若检测到所述蒸汽的品质参数信息不满足预设要求，则调整所述蒸汽加热器和/或所述进水阀的运行参数信息，直至检测到的所述蒸汽的品质参数信息满足预设要求。
作为进一步改进的方案，所述蒸汽的品质参数信息包括蒸汽的湿度值，所述蒸汽加热器的运行参数信息包括所述蒸汽加热器的温度值；当检测所述蒸汽的湿度值大于所述预设要求下的湿度值时，则调高所述蒸汽加热器的温度值；当检测所述蒸汽的湿度值小于所述预设要求下的湿度值时，则调低所述蒸汽加热器的温度值。
作为进一步改进的方案，所述进水阀的运行参数信息包括所述进水阀的通断频率、通断时长、进水量中的至少其一。
作为进一步改进的方案，所述控制方法还包括：检测进入所述蒸汽产生系统前的液体的温度，并根据所述液体的温度设定所述蒸汽加热器的预设目标温度；当所述蒸汽加热器的实际温度达到预设目标温度时，控制所述进水阀通断交替工作以向所述蒸汽加热器中进水。
作为进一步改进的方案，所述控制方法包括：
控制所述进水阀以第一预设频率进行通断交替工作，以使得所述液体呈间断式通过所述进水阀，通过所述进水阀后的液体呈脉冲式水流输送至处于加热状态的蒸汽加热器中；每一所述脉冲式水流在流出所述蒸汽加热器之前至少部分被蒸发汽化，以产生第一干湿度蒸汽；
控制所述进水阀以第二预设频率进行通断交替工作，以使得所述液体呈间断式通过所述进水阀，通过所述进水阀后的液体呈脉冲式水流输送至处于加热状态的蒸汽加热器中；每一所述脉冲式水流在流出所述蒸汽加热器之前 至少部分被蒸发汽化，以产生第二干湿度蒸汽；
其中，所述第一预设频率不同于所述第二预设频率，和/或所述第一预设温度不同于所述第二预设温度。
作为进一步改进的方案，所述控制方法包括：
接收产生第一干湿度蒸汽的触发指令；
控制所述液体泵开通工作，且在所述液体泵开通工作期间，控制所述进水阀以开通第一开通时长和关断第一关断时长的方式进行通断交替工作，以形成第一脉冲水流，输送至处于加热状态的蒸汽加热器中被蒸发汽化，产生第一干湿度蒸汽；
接收产生第二干湿度蒸汽的触发指令；
控制所述液体泵开通工作，且在所述液体泵开通工作期间，控制所述进水阀以开通第二开通时长和关断第二关断时长的方式进行通断交替工作，以形成第二脉冲水流，输送至处于加热状态的蒸汽加热器中被蒸发汽化，产生第二干湿度蒸汽；
其中，所述第一脉冲水流和所述第二脉冲水流均为具有强弱交替变化的连续水流，进水阀开通状态下形成脉冲水流的强水流段，进水阀关断状态下形成脉冲水流的弱水流段；
其中，所述第二开通时长小于所述第一开通时长，且所述第二关断时长大于所述第一关断时长，产生的第二干湿度蒸汽的湿度小于产生的第一干湿度蒸汽的湿度。
作为进一步改进的方案，所述控制方法包括：预先存储蒸汽干湿度值与蒸汽加热器的预设温度和/或进水阀的预设频率之间一一对应关系的信息表；当触发产生某一预设蒸汽干湿度值的蒸汽指令时，读取所述信息表中的对应关系数据，并据此设定所述蒸汽加热器的预设温度和/或所述进水阀的预设频率。
本申请提供的产生蒸汽的控制方法，控制液体呈脉冲式水流输送至处于加热状态的蒸汽加热器中，其中，每一所述脉冲式水流在所述蒸汽加热器内持续 流动，且在流出所述蒸汽加热器之前至少部分被蒸发汽化。本申请提供的控制方法中，通过脉冲式水流的方式进水，每一脉冲式水流在蒸汽加热器内持续流动的过程中被加热蒸发，如此产生蒸汽的速度快、产生的蒸汽连续且品质稳定可控。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是本申请控制方法应用的蒸汽产生系统之于蒸汽设备中的立体图。
图2是本申请控制方法应用的蒸汽产生系统的示意图。
图3是本申请控制方法一实施例的流程图。
图4是本申请控制方法另一实施例的流程图。
图5是本申请控制方法又一实施例的流程图。
附图标记说明：1-液体进口；2-蒸汽出口；3-液体泵；4-进水阀；5-蒸汽加热器。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实现方式并不代表与本申请相一致的所有实现方式，它们仅是与本申请的一些方面相一致的装置和方法的例子。
下面结合附图，对本申请的一种产生蒸汽的控制方法进行详细说明。在不冲突的情况下，下述实施例中的特征可以相互组合。
请参照图1至图5所示，本申请提供一种产生蒸汽的控制方法，应用于蒸汽产生系统。如图1和图2所示，其为本申请产生蒸汽的控制方法应用的蒸汽 产生系统一种实施例的图示。在本实施例中，所述蒸汽产生系统包括液体进口1、蒸汽出口2，以及连接于液体进口1和蒸汽出口2之间的液体泵3、进水阀4和蒸汽加热器5，所述进水阀4连接于所述液体进口1和所述蒸汽加热器5之间。所述液体进口1、进水阀4、液体泵3、蒸汽加热器5及蒸汽出口2之间通过管路相连，液体从液体进口1进入，依次经进水阀4、液体泵3进入蒸汽加热器5中被加热蒸发为蒸汽，而后通过蒸汽出口2排出。所述液体泵3，也即水泵，其用于实现进水或停止进水的控制，在一实施例中，所述液体泵3为电磁泵。所述进水阀4用于实现进水量及进水方式的控制，在一实施例中，所述进水阀4为电磁阀。所述液体泵3连接在所述进水阀4和所述蒸汽加热器5之间，所述液体泵3在工作时产生压力以驱动液体流入蒸汽加热器5中，由于液体泵3的出水端与蒸汽加热器5直接相连，因此其产生的压力需足以克服蒸汽加热器5与液体泵3相连接一端管路内的压力，以避免逆流；而进水阀4与蒸汽加热器5之间由于有液体泵3，也保护了进水阀4免受来自蒸汽加热器5的蒸汽压力，保证了进水阀4的寿命和工作性能的稳定。所述液体泵3与进水阀4由关联的信号进行控制，以保证两者间工作的联动匹配性。
实施例一
请参阅图3所示，所述控制方法包括：S1、控制所述液体泵3工作以驱动液体从所述液体进口1经过所述进水阀4和液体泵3输送至处于加热状态的所述蒸汽加热器5；S2、在所述液体泵3的工作期间内，控制所述进水阀4以预设频率进行通断交替工作，以使得所述液体呈间断式通过所述进水阀4，通过所述进水阀4后的液体呈脉冲式水流输送至所述蒸汽加热器5中；其中，每一所述脉冲式水流在所述蒸汽加热器5内持续流动，且在流出所述蒸汽加热器5之前至少部分被蒸发汽化生成蒸汽。
本申请提供的控制方法中，通过脉冲式水流的方式进水，每一脉冲式水流在蒸汽加热器5内持续流动的过程中被加热蒸发，如此产生蒸汽的速度快。而且，由于向蒸汽加热器5内的进水呈脉冲式水流，具体的所述脉冲式水流是具有呈一股一股强弱交替变化的连续水流，如此水流进入蒸汽加热器5中，使得 蒸汽加热器5在蒸发完前一脉冲式水流的“峰段”后，以及后一脉冲式水流的“峰段”到来前的这一时间间隙内可以快速加热回复至可产生品质稳定蒸汽的平衡温度，从而保证每一脉冲式水流进入到蒸汽加热器5中时，蒸汽加热器5的自身状态都是相同或几乎相同的，不会因为前方水流的蒸发吸热而导致温度下降，从而其产生的蒸汽可以是湿度较小的干蒸汽，且蒸汽连续、品质稳定可控。
本实施例中，由于液体泵3设置在进水阀4和蒸汽加热器5之间，且在控制进水的过程中，液体泵3是持续开通的，而不是间断开通的，如此以来液体泵3可以持续提供水压以防止蒸汽加热器5内的蒸汽回流，液体泵3也不用频繁启停，不易损坏；进水阀4由于是仅提供水流通断的作用，而无需提供液体流动的驱动力，因此，进水阀4的启动无需较大的启动力，进水阀4的通断频率可以远高于液体泵3所能承受的开闭频率。在本实施例中，所述进水阀4和所述液体泵3之间的管路充满液体或者至少靠近液体泵3的一段充满液体，在液体泵3的工作期间，进水阀4通断交替工作使得进水阀4和液体泵3之间的液体处于交替的两种环境状态，即液体泵3为开通且进水阀4也为开通下的状态和液体泵3为开通而进水阀4为关断下的状态。在液体泵3为开通且进水阀4也为开通的状态下，液体泵3和进水阀4之间的液体是两端均为畅通的状态，液体泵3提供的驱动力可将液体泵3和进水阀4之间的一定量的液体经过液体泵3排向蒸汽加热器5中，同时可将从液体进口1而来的液体经过进水阀4抽入液体泵3和进水阀4之间。在该状态下，由于液体泵3和进水阀4之间的液体是两端均为畅通的状态，此时液体泵3驱动液体流向蒸汽加热器5内的进水量较大，形成所述强弱变化的脉冲式水流中的强水流部分。在液体泵3为开通而进水阀4为关断的状态下，液体泵3与进水阀4之间的液体的上游被关断，液体泵3与进水阀4之间的液体此时处于一端为封闭的环境，液体泵3驱动此时的液体流向蒸汽加热器5中需克服负压力，此时液体泵3驱动液体流动向蒸汽加热器5内的进水量则较小，形成所述强弱变化的脉冲式水流中的弱水流部分。当进水阀4以一定频率如此反复通断时，则经过液体泵3后的水流则呈连 续地、具有强弱变化的脉冲式水流，输送至蒸汽加热器5中。采用该方案，由于向蒸汽加热器5中的进水仍是连续的，且少量水可以产生大量的蒸汽，因而产生的蒸汽经过管路和蒸汽喷口喷出后，不会具有明显的间断或是蒸汽量呈时大时小的状态，产生的蒸汽是持续、稳定的。
实施例二
请参阅图4所示，在本申请控制方法进一步改进的实施例中，所述的产生蒸汽的控制方法还包括：S3、控制所述蒸汽加热器5加热，并检测其实际温度；当所述蒸汽加热器5的实际温度达到预设温度时，执行上述S1、S2步骤。
在该实施例中，通过对蒸汽加热器5进行预热，并在预热达到预设温度时再控制进水，保证进水即可产生达到预设品质的蒸汽。相较于现有技术中一些通过进水触发加热器加热的方案，可避免出蒸汽的前期蒸汽品质不稳定的问题，以及可减少水资源的浪费。在本实施例中，所述蒸汽品质包括蒸汽的干湿度，所述预设温度的设置与通过液体泵3和进水阀4控制进水量的大小以及欲达到的蒸汽的干湿度有关。在通过液体泵3和进水阀4控制进水量的大小一定的情况下，预产生越干的蒸汽(即湿度较小的蒸汽)，则蒸汽加热器5的预设温度值越高，反之，预产生越湿的蒸汽(即湿度较大的蒸汽)，则蒸汽加热器5的预设温度值越低。进一步的，在本实施例中，由控制器根据检测到的蒸汽加热器5的实际温度自动触发液体泵3和进水阀4工作进水，可以实现时机精准的进水控制，既避免了过早进水导致的蒸汽品质不稳定，又避免了过晚进水导致的蒸汽加热器5干烧过热。
实施例三
请参阅图5所示，在图3所示的控制方法的基础上进一步改进的实施例中，所述蒸汽出口2具有开通状态和闭合状态，在所述蒸汽出口2处于闭合状态下，所述控制方法包括：控制所述蒸汽加热器5处于加热状态，并控制所述液体泵3和所述进水阀4间歇工作以向所述蒸汽加热器5间歇式进水。
在具体实施例中，所述蒸汽出口2的开通状态和闭合状态由使用者手动控制，以便于使用者随时控制蒸汽的关断与排出。例如，在一实施例中，所述液 体在蒸汽加热器5中蒸发成为蒸汽后，通过蒸汽管路连接至供使用者手握的蒸汽枪头6中，所述蒸汽出口2设于所述蒸汽枪头6内，蒸汽枪头6具有扳机61，使用者握紧和松开扳机61以实现蒸汽出口2的开通状态和闭合状态的切换。在一实施例中，所述蒸汽枪头6内设有机械开关和电开关，所述机械开关设于所述蒸汽出口2处，用于控制所述蒸汽出口2的开通与闭合，所述电开关与所述液体泵3电性连通，用于控制液体泵工作，所述扳机同时驱动所述机械开关和所述电开关。
在图5所示的实施例中，当蒸汽出口2处于闭合状态下时，蒸汽产生系统内产生的蒸汽无法通过蒸汽出口2排出，此时若持续、大量产生蒸汽会造成蒸汽产生系统内的压力过高，影响蒸汽产生系统以及使用者的安全。本实施例中，在蒸汽出口2处于闭合状态下，控制所述蒸汽加热器5处于加热状态，并控制所述液体泵3和所述进水阀4间歇工作以向所述蒸汽加热器5间歇式进水。如此设置具有如下有益效果：控制所述蒸汽加热器5仍处于加热状态，可以保证使用者打开蒸汽出口2时，蒸汽可以及时的产生。由于使用者在使用蒸汽产生系统时，经常需要频繁的开、关蒸汽，在蒸汽出口2处于闭合状态下，若此时控制蒸汽加热器5不再加热，则蒸汽加热器5的温度下降，当蒸汽出口2处于闭合状态下的时间较长时，则蒸汽加热器5的温度下降较多，此时当使用者再次开通蒸汽出口2时，此时产生的蒸汽则无法达到预设的品质。例如，使用者在使用较干的蒸汽进行衣物干洗的过程中，将蒸汽出口2闭合一段时间后，再次开通蒸汽出口2，此时由于蒸汽加热器5的温度降低下，产生的蒸汽湿度较大，造成衣物受潮。另一方面，由于控制所述蒸汽加热器5仍处于加热状态，持续进水会产生大量蒸汽，造成蒸汽产生系统内的压力过高，影响蒸汽产生系统以及使用者的安全；而若控制液体泵3和进水阀4不进水，则蒸汽加热器5持续升温，会造成干烧过热。基于此，本实施例中，在控制所述蒸汽加热器5处于加热状态的前提下，控制所述液体泵3和所述进水阀4间歇工作以向所述蒸汽加热器5间歇式进水。如此设置，既避免了持续进水产生的大量蒸汽难以排出的问题，又避免了蒸汽加热器5持续升温，造成干烧过热的问题。
进一步的，所述控制所述蒸汽加热器5处于加热状态，并控制所述液体泵3和所述进水阀4间歇工作以向所述蒸汽加热器5中间歇式进水，包括：控制所述蒸汽加热器5工作并检测其工作状态，当所述蒸汽加热器5的工作状态达到预设条件时，控制所述液体泵3和所述进水阀4工作以向所述蒸汽加热器5进水，当所述蒸汽加热器5的工作状态未达预设条件时，控制所述液体泵3和所述进水阀4停止向所述蒸汽加热器5进水。即，间歇式进水的过程控制，由控制器根据检测到的蒸汽加热器5的工作状态自动触发，如此可以很好的控制和维持蒸汽加热器5的工作状态，避免蒸汽加热器5的实际工作状态过分偏离其可产生预设品质蒸汽时的工作状态，保证品质可控蒸汽的随时产生。所述的工作状态达到预设条件可以是达到预设时间、预设压力、预设温度中的一种或几种。在一实施例中，所述蒸汽加热器5的工作状态达到预设条件包括，所述蒸汽加热器5的实际温度达到第一预设温度。即，在蒸汽出口2处于闭合状态下，通过蒸汽加热器5的温度来控制进水与否，当蒸汽加热器5的温度达到第一预设温度时，控制液体泵3和进水阀4进水，此时蒸汽加热器5的温度会下降至第一预设温度以下，则液体泵3和进水阀4停止进水；待蒸汽加热器5的温度再次升温至第一预设温度时，控制液体泵3和进水阀4再次进水，如此反复，实现间歇式进水。如此设置，在蒸汽出口2处于闭合状态时，此时并不急于喷出蒸汽，采用温度控制进水，以保证“暂存”于系统内的蒸汽几近处于预设的品质状态；在蒸汽出口处于打开状态时，此时急需蒸汽，而由于蒸汽出口处于闭合状态时系统内有“暂存”的蒸汽，该蒸汽可以即时喷出使用，同时进水产生蒸汽，以保证蒸汽的产生不会有延时。在间歇式进水过程中，进水和停止进水主要是由液体泵3来实现，进水阀4主要用于在进水阶段实现脉冲式水流的进水方式。换言之，所述液体泵3和所述进水阀4间歇工作的频率小于所述进水阀4进行通断交替工作的预设频率，也即，在一个间歇进水过程中，所述进水阀4仍有多次通断交替工作的过程。
通过以上说明可知，虽然间歇式进水可以避免产生大量蒸汽，但仍会有蒸汽产生。因此，在一实施例中，在所述蒸汽出口2处于闭合状态下，所述蒸汽 加热器5的实际温度处于第一预设温度以下的时长大于其实际温度为第一预设温度的时长。也即，在间歇式进水时，进水的时长小于不进水的时长，如此可以减少进水频次，减少蒸汽量的产生。进一步的，在本实施例中，所述蒸汽产生系统还包括泄压阀7，所述控制方法还包括：当所述蒸汽产生系统内的蒸汽压力达到预设值时，通过泄压阀7排出蒸汽以泄压。
在所述蒸汽出口2处于开通状态下，所述控制方法包括：控制所述蒸汽加热器5处于加热状态，并控制所述液体泵3和进水阀4工作以进水；且所述蒸汽加热器5的加热与经所述液体泵3和进水阀4控制的进水关系被配置为，所述蒸汽加热器5单位时间内产生的热量不小于所述液体泵3和进水阀4控制的进水在单位时间内所消耗的热量。
即，在所述蒸汽出口2处于开通状态下，控制所述液体向所述蒸汽加热器5内持续进水，以保证产生的蒸汽连续。在持续进水的状态下，为避免蒸汽加热器5的温度下降，需设置蒸汽加热器5单位时间内产生的热量不小于所述液体泵3和进水阀4控制的进水在单位时间内所消耗的热量，以使得在持续进水过程中，所述蒸汽加热器5可从预设温度以下的温度升温至预设温度，以及在升到预设温度后维持在所述预设温度。所述预设温度可以是一温度区间，所述升温至预设温度可以是指升温至所述温度区间的下限温度值，所述维持在所述预设温度可以是指温度在温度区间的上限温度值与下限温度值之间浮动。另外，需要说明的是，此处所述的持续进水是相对于蒸汽出口2处于闭合状态下的间歇式进水而言，应当理解的是，此处所谓的持续进水，不改变通过进水阀4控制的脉冲式水流的进水方式。
在所述蒸汽出口2处于开通状态下，所述控制方法包括：控制所述蒸汽加热器5处于加热状态，控制所述液体泵3持续工作以向所述蒸汽加热器5中进水；检测所述蒸汽加热器5的实际温度，当所述蒸汽加热器5的实际温度达到第二预设温度时，控制所述蒸汽加热器维持在所述第二预设温度。所述第一预设温度不小于所述第二预设温度，所述第二预设温度为一温度区间。
实施例四
本申请提供的产生蒸汽的控制方法可用于产生一种或多种预设干湿度状态的蒸汽，所述预设干湿度状态的蒸汽通过控制进水阀4的通断交替工作的预设频率与蒸汽加热器5的加热彼此匹配实现。例如，当控制所述进水阀4以第一预设频率进行通断交替工作，通过所述进水阀4后的液体呈脉冲式水流输送至处于第一预置温度的蒸汽加热器5中，以产生第一干湿度蒸汽；当控制所述进水阀4以第二预设频率进行通断交替工作，通过所述进水阀4后的液体呈脉冲式水流输送至处于第二预置温度的蒸汽加热器5中，以产生第二干湿度蒸汽；其中，所述第一预设频率不同于所述第二预设频率，和/或所述第一预置温度不同于所述第二预置温度，即可实现第一干湿度蒸汽的干湿度不同于第二干湿度蒸汽。由于进水阀4通断交替工作的预设频率不仅影响脉冲式进水方式，同时还会影响进水量，因此，在产生不同干湿度蒸汽时，在一实施例中，以不改变进水阀4的预设频率，而是以改变蒸汽加热器5的预设温度的方式。例如，设置所述第一预设频率和所述第二预设频率相同，所述第一预置温度高于所述第二预置温度，以使得产生的第一干湿度蒸汽的湿度小于第二干湿度蒸汽的湿度。
在一实施例中，产生不同干湿度蒸汽的控制方法包括：
接收产生第一干湿度蒸汽的触发指令；
控制所述液体泵3开通工作，且在所述液体泵3开通工作期间，控制所述进水阀4以开通第一开通时长和关断第一关断时长的方式进行通断交替工作，以形成第一脉冲水流，输送至处于加热状态的蒸汽加热器5中被蒸发汽化，产生第一干湿度蒸汽；
接收产生第二干湿度蒸汽的触发指令；
控制所述液体泵3开通工作，且在所述液体泵3开通工作期间，控制所述进水阀4以开通第二开通时长和关断第二关断时长的方式进行通断交替工作，以形成第二脉冲水流，输送至处于加热状态的蒸汽加热器5中被蒸发汽化，产生第二干湿度蒸汽；
其中，所述第一脉冲水流和所述第二脉冲水流均为具有强弱交替变化的连续水流，进水阀4开通状态下形成脉冲水流的强水流段，进水阀4关断状态下 形成脉冲水流的弱水流段；
其中，所述第二开通时长小于所述第一开通时长，且所述第二关断时长大于所述第一关断时长，产生的第二干湿度蒸汽的湿度小于产生的第一干湿度蒸汽的湿度。
由于本申请的控制方法形成的脉冲式水流是具有强弱变化的连续式水流，在进水阀4的一个通断周期中，进水阀4开通时长减少导致的强水流段的进水量的减少，可通过延长进水阀4关断时长而带来的弱水流段的进水量的增加来弥补，避免在改变产生蒸汽的干湿度时使得蒸汽的产生量也发生显著的变化。可选地，在进水阀4的一个通断周期中，所述进水阀的开通时长的取值范围为0.01-0.2s，所述进水阀的关断时长的取值范围为1-3s。通过改变进水阀4的开通时长和关断时长可以改变产生蒸汽的品质，例如可以产生不同干湿度的蒸汽。例如，在产生一种预设干湿度蒸汽的控制过程中，进水阀4的开通时长为0.1s，关断时长为1.3s，如此交替反复；在产生另一种预设干湿度蒸汽的控制过程中，进水阀的开通时长为0.05s，关断时长为1.6s，如此交替反复。
在一实施例中，产生第一干湿度蒸汽时所述蒸汽加热器5的加热功率与产生第二干湿度蒸汽时所述蒸汽加热器5的加热功率相同。即，产生不同干湿度蒸汽时，并不对蒸汽加热器5的加热功率进行区别控制，而仅是通过进水阀4调节进水状态来实现。通过将进水阀4的进水状态和进水量与蒸汽加热器5的额定加热功率进行匹配，可以实现在产生不同的干湿度蒸汽时，蒸汽加热器5的温度维持在与之对应的平衡温度范围内，例如，在产生一种相对较湿的蒸汽时，蒸汽加热器5的平衡温度范围为180℃-190℃，在产生一种相对较干的蒸汽时，蒸汽加热器5的平衡温度范围为240℃-250℃。进一步地，为了避免出现因进水量极小导致蒸汽加热器5的温度持续上升而无法稳定在一平衡温度范围内，所述蒸汽加热器5上还设有过热保护装置，以在蒸汽加热器5的温度达到过热保护温度时(例如280℃)，停止蒸汽加热器5的加热。在一具体实施例中，所述过热保护装置包括温度传感器，温度传感器电性连接至蒸汽加热器5的控制器，控制器根据所述温度传感器检测到的温度对蒸汽加热器5进行控制。
本实施例产生不同干湿度蒸汽时，并不对蒸汽加热器5的加热功率进行区别控制，如此控制过程简单。更为重要的是，如此控制会更加精准，因为为了使得蒸汽加热器5具有较好的热效率，以及减少热量损失，常常对蒸汽加热器5设置较好的保温措施，如设置隔热棉等；蒸汽加热器5具有较好的保温性能，使得其温度变化的钝性大，通过改变蒸汽加热器5的加热功率的方式无法较快的使蒸汽加热器5的温度变化到可以产生预设的干湿度蒸汽的温度。本实施例通过对进水量和进水状态的控制，使得蒸汽加热器5可以与进水达到热平衡的状态，使得蒸汽加热器5维持在可产生某一干湿度蒸汽的平衡温度区间内。
实施例五
本实施例提供一种可产生品质可调的蒸汽的控制方法，具体为通过控制进水阀4以一定频率的通5断交替工作的方式，实现脉冲式水流的进水方式，每一脉冲式水流在蒸汽加热器5内持续流动的过程中至少部分被蒸发以形成蒸汽，并且在蒸汽产生过程中，检测蒸汽的品质参数信息，并动态调整所述进水阀的运行参数信息，以保持蒸汽的品质稳定。
具体地，所述控制方法包括：检测生成的蒸汽的品质参数信息，以及所述蒸汽加热器5和/或所述进水阀4的运行参数信息；若检测到所述蒸汽的品质参数信息不满足预设要求，则调整所述蒸汽加热器5和/或所述进水阀的运行参数信息，直至检测到的所述蒸汽的品质参数信息满足预设要求。
进一步地，所述蒸汽的品质参数信息包括蒸汽的湿度值，所述蒸汽加热器5的运行参数信息包括所述蒸汽加热器5的温度值；当检测所述蒸汽的湿度值大于所述预设要求下的湿度值时，则调高所述蒸汽加热器的温度值；当检测所述蒸汽的湿度值小于所述预设要求下的湿度值时，则调低所述蒸汽加热器的温度值。所述进水阀4的运行参数信息包括所述进水阀4的通断频率、通断时长、进水量中的至少其一。
进一步地，为了使得在蒸汽产生之初时的蒸汽品质即与欲达到的蒸汽品质偏差不大，从而保证只需微调即可达到最终欲达到的蒸汽品质，所述控制方法还包括通过预先计算蒸汽加热器5的目标温度，并进行预热的步骤。具体为， 所述控制方法包括：检测进入所述蒸汽产生系统前的液体的温度，并根据所述液体的温度设定所述蒸汽加热器5的预设目标温度；当所述蒸汽加热器5的实际温度达到预设目标温度时，控制所述进水阀4通断交替工作以向所述蒸汽加热器5中进水。由于液体的初始温度是影响蒸汽加热器5的加热过程最重要的因素，因此，本实施例中以该最重要的因素初步计算欲达到的蒸汽品质对应的蒸汽加热器5的大致温度值即预设目标温度，并在蒸汽加热器5的实际温度达温度时控制进水。如此，虽然在该蒸汽加热器5的预设目标温度产生的蒸汽可能和欲达到的蒸汽品质不完全一致，但也相差不多，此时再通过上述步骤调整蒸汽加热器5的预设温度，便可以很快地调整为达到欲达到的蒸汽品质，使用体验更好。
在一实施例中，产生品质稳定蒸汽的控制方法包括：控制所述液体泵3开通工作，且在所述液体泵3开通工作期间，控制所述进水阀4以预设频率进行通断交替工作，以形成脉冲水流，输送至处于加热状态的蒸汽加热器5中被蒸发汽化产生蒸汽；其中，在所述进水阀4的一个通断周期中，进水阀4的开通状态持续第一时长，关断状态持续第二时长；
检测产生的蒸汽的品质参数信息；若检测到所述蒸汽的品质参数信息不满足预设要求，则控制所述进水阀4改变其开通状态持续的第一时长和关断状态持续的第二时长，直至检测到的所述蒸汽的品质参数信息满足预设要求。
所述蒸汽的品质参数信息包括蒸汽的湿度值；所述控制所述进水阀4改变其开通状态持续的第一时长和关断状态持续的第二时长包括：控制所述进水阀4的开通状态持续的第一时长增加且控制其关断状态持续的第二时长减小，或者是，控制所述进水阀4的开通状态持续的第一时长减小且控制其关断状态持续的第二时长增加。在一实施例中，所述液体泵3和所述蒸汽加热器5之间设置有由所述液体泵3向所述蒸汽加热器5的方向单向导通的单向阀8。单向阀8的设置可以避免蒸汽逆流，更有利于脉冲式水流的进水方式。
通过以上对具体实施例的描述可知，本申请提供的产生蒸汽的控制方法，控制液体呈脉冲式水流输送至处于加热状态的蒸汽加热器5中，其中，每一所 述脉冲式水流在所述蒸汽加热器5内持续流动，且在流出所述蒸汽加热器5之前至少部分被蒸发汽化。本申请提供的控制方法中，通过脉冲式水流的方式进水，每一脉冲式水流在蒸汽加热器5内持续流动的过程中被加热蒸发，如此产生蒸汽的速度快、产生的蒸汽连续且品质稳定可控。
以上所述仅是本申请的较佳实施例而已，并非对本申请做任何形式上的限制，虽然本申请已以较佳实施例揭露如上，然而并非用以限定本申请，任何熟悉本专业的技术人员，在不脱离本申请技术方案的范围内，当可利用上述揭示的技术内容做出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本申请技术方案的内容，依据本申请的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本申请技术方案的范围内。

Claims (20)

  1. 一种产生蒸汽的控制方法，应用于蒸汽产生系统，所述蒸汽产生系统包括液体进口、蒸汽出口，以及连接于液体进口和蒸汽出口之间的液体泵、进水阀和蒸汽加热器，所述进水阀连接于所述液体进口和所述蒸汽加热器之间，所述液体泵连接在所述进水阀和所述蒸汽加热器之间，其特征在于，所述控制方法包括：
    S1、控制所述液体泵工作以驱动液体从所述液体进口经过所述进水阀输送至处于加热状态的所述蒸汽加热器；
    S2、在所述液体泵的工作期间内，控制所述进水阀以预设频率进行通断交替工作，以使得所述液体呈间断式通过所述进水阀，通过所述进水阀后的液体经过液体泵呈脉冲式水流输送至所述蒸汽加热器中；
    其中，每一所述脉冲式水流在所述蒸汽加热器内持续流动，且在流出所述蒸汽加热器之前至少部分被蒸发汽化生成蒸汽。
  2. 如权利要求1所述的产生蒸汽的控制方法，其特征在于，所述进水阀和所述液体泵之间的管路至少靠近所述液体泵的部分为充满液体的充盈段。
  3. 如权利要求1所述的产生蒸汽的控制方法，其特征在于，所述控制方法还包括：S3、控制所述蒸汽加热器加热，并检测其实际温度；当所述蒸汽加热器的实际温度达到预设温度时，执行上述S1、S2步骤。
  4. 如权利要求1所述的产生蒸汽的控制方法，其特征在于，所述蒸汽出口具有开通状态和闭合状态，在所述蒸汽出口处于闭合状态下，所述控制方法包括：控制所述蒸汽加热器处于加热状态，并控制所述液体泵和所述进水阀间歇工作以向所述蒸汽加热器间歇式进水。
  5. 如权利要求4所述的产生蒸汽的控制方法，其特征在于，在所述蒸汽出口处于闭合状态下，所述控制方法包括：控制所述蒸汽加热器处于加热状态并检测所述蒸汽加热器的实际温度，当所述蒸汽加热器的实际温度达到第一预设温度时，控制所述液体泵向所述蒸汽加热器中进水，并在当所述蒸汽加热器的实 际温度未达第一预设温度时，控制所述液体泵停止向所述蒸汽加热器中进水。
  6. 如权利要求5所述的产生蒸汽的控制方法，其特征在于，在所述蒸汽出口处于闭合状态下，所述蒸汽加热器的实际温度处于第一预设温度以下的时长大于其实际温度为第一预设温度的时长。
  7. 如权利要求6所述的产生蒸汽的控制方法，其特征在于，在所述蒸汽出口处于开通状态下，所述控制方法包括：控制所述蒸汽加热器处于加热状态，控制所述液体泵持续工作以向所述蒸汽加热器中进水；检测所述蒸汽加热器的实际温度，当所述蒸汽加热器的实际温度达到第二预设温度时，控制所述蒸汽加热器维持在所述第二预设温度。
  8. 如权利要求7所述的产生蒸汽的控制方法，其特征在于，所述第一预设温度不小于所述第二预设温度，所述第二预设温度为一温度区间。
  9. 如权利要求7所述的产生蒸汽的控制方法，其特征在于，所述蒸汽产生系统包括蒸汽枪头，所述蒸汽出口设于所述蒸汽枪头内，所述蒸汽枪头具有用于控制所述蒸汽出口在开通状态和闭合状态之间切换的扳机。
  10. 如权利要求9所述的产生蒸汽的控制方法，其特征在于，所述蒸汽枪头内设有机械开关和电开关，所述机械开关设于所述蒸汽出口处，用于控制所述蒸汽出口的开通与闭合，所述电开关与所述液体泵电性连通，用于控制液体泵工作，所述扳机同时驱动所述机械开关和所述电开关。
  11. 如权利要求4所述的产生蒸汽的控制方法，其特征在于，所述液体泵和所述进水阀间歇工作的频率小于所述进水阀进行通断交替工作的预设频率。
  12. 如权利要求4所述的产生蒸汽的控制方法，其特征在于，所述控制方法包括：当所述蒸汽产生系统内的蒸汽压力达到预设值时，通过泄压阀排出蒸汽以泄压。
  13. 如权利要求1所述的产生蒸汽的控制方法，其特征在于，所述液体泵为电磁泵，所述进水阀为电磁阀，所述电磁泵与所述电磁阀为联动控制。
  14. 如权利要求1所述的产生蒸汽的控制方法，其特征在于，所述控制方法 包括：检测生成的蒸汽的品质参数信息，以及所述蒸汽加热器和/或所述进水阀的运行参数信息；若检测到所述蒸汽的品质参数信息不满足预设要求，则调整所述蒸汽加热器和/或所述进水阀的运行参数信息，直至检测到的所述蒸汽的品质参数信息满足预设要求。
  15. 如权利要求14所述的产生蒸汽的控制方法，其特征在于，所述蒸汽的品质参数信息包括蒸汽的湿度值，所述蒸汽加热器的运行参数信息包括所述蒸汽加热器的温度值；当检测所述蒸汽的湿度值大于所述预设要求下的湿度值时，则调高所述蒸汽加热器的温度值；当检测所述蒸汽的湿度值小于所述预设要求下的湿度值时，则调低所述蒸汽加热器的温度值。
  16. 如权利要求14所述的产生蒸汽的控制方法，其特征在于，所述进水阀的运行参数信息包括所述进水阀的通断频率、通断时长、进水量中的至少其一。
  17. 如权利要求14所述的产生蒸汽的控制方法，其特征在于，所述控制方法还包括：检测进入所述蒸汽产生系统前的液体的温度，并根据所述液体的温度设定所述蒸汽加热器的预设目标温度；当所述蒸汽加热器的实际温度达到预设目标温度时，控制所述进水阀通断交替工作以向所述蒸汽加热器中进水。
  18. 如权利要求1所述的产生蒸汽的控制方法，其特征在于，所述控制方法包括：
    控制所述进水阀以第一预设频率进行通断交替工作，以使得所述液体呈间断式通过所述进水阀，通过所述进水阀后的液体呈脉冲式水流输送至处于第一预置温度的蒸汽加热器中；每一所述脉冲式水流在流出所述蒸汽加热器之前至少部分被蒸发汽化，以产生第一干湿度蒸汽；
    控制所述进水阀以第二预设频率进行通断交替工作，以使得所述液体呈间断式通过所述进水阀，通过所述进水阀后的液体呈脉冲式水流输送至处于第二预置温度的蒸汽加热器中；每一所述脉冲式水流在流出所述蒸汽加热器之前至少部分被蒸发汽化，以产生第二干湿度蒸汽；
    其中，所述第一预设频率不同于所述第二预设频率，和/或所述第一预置温 度不同于所述第二预置温度。
  19. 如权利要求1所述的产生蒸汽的控制方法，其特征在于，所述控制方法包括：
    接收产生第一干湿度蒸汽的触发指令；
    控制所述液体泵开通工作，且在所述液体泵开通工作期间，控制所述进水阀以开通第一开通时长和关断第一关断时长的方式进行通断交替工作，以形成第一脉冲水流，输送至处于加热状态的蒸汽加热器中被蒸发汽化，产生第一干湿度蒸汽；
    接收产生第二干湿度蒸汽的触发指令；
    控制所述液体泵开通工作，且在所述液体泵开通工作期间，控制所述进水阀以开通第二开通时长和关断第二关断时长的方式进行通断交替工作，以形成第二脉冲水流，输送至处于加热状态的蒸汽加热器中被蒸发汽化，产生第二干湿度蒸汽；
    其中，所述第一脉冲水流和所述第二脉冲水流均为具有强弱交替变化的连续水流，进水阀开通状态下形成脉冲水流的强水流段，进水阀关断状态下形成脉冲水流的弱水流段；
    其中，所述第二开通时长小于所述第一开通时长，且所述第二关断时长大于所述第一关断时长，产生的第二干湿度蒸汽的湿度小于产生的第一干湿度蒸汽的湿度。
  20. 如权利要求18所述的产生蒸汽的控制方法，其特征在于，所述控制方法包括：预先存储蒸汽干湿度值与蒸汽加热器的预置温度和/或进水阀的预设频率之间一一对应关系的信息表；当触发产生某一预设蒸汽干湿度值的蒸汽指令时，读取所述信息表中的对应关系数据，并据此设定所述蒸汽加热器的预置温度和/或所述进水阀的预设频率。
PCT/CN2022/134325 2022-03-04 2022-11-25 一种产生蒸汽的控制方法 WO2023165181A1 (zh)

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