CN115681933A - Steam generating system and steam equipment - Google Patents

Abstract

The application provides a steam generation system and steam equipment. The steam generation system comprises a liquid inlet, a steam outlet, a solenoid valve and a steam generator, wherein the solenoid valve and the steam generator are connected between the liquid inlet and the steam outlet, the solenoid valve is connected between the liquid inlet and the steam generator, the water pump is connected between the solenoid valve and the steam generator, at least a part of a connecting pipeline between the solenoid valve and the water pump, which is close to the water pump, is a filling section filled with liquid, the solenoid valve is frequently opened and closed to feed water into the steam generator when the water pump is in an opening state, the liquid passing through the solenoid valve and the water pump is pulse-type water flow with alternately changing strength, the water fed by the water pump when the solenoid valve is opened in the opening state forms a strong water flow section of the pulse-type water flow, and the water fed by the water pump when the solenoid valve is closed in the opening state forms a weak water flow section of the pulse-type water flow. The steam generating system can generate continuous, stable and quality-controllable steam.

Description

Steam generation system and steam equipment

Technical Field

The invention relates to the technical field of steam generation, in particular to a steam generation system and steam equipment.

Background

The steam has the characteristics of high temperature, capability of generating a large amount of steam by a small amount of liquid water, good diffusibility and the like, and has wide application prospects in the fields of cleaning, disinfection and sterilization. In the prior art, products for cleaning and sterilizing by steam, such as steam car washers, steam mops, steam sterilizing cabinets, steam irons, garment steamers, etc., have been used.

One steam generation method in the prior art is a method 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. Because the mode of boiler water storage heating evaporation is adopted, the water in the boiler needs to be completely heated and boiled, and the steam generation speed is slow. In the prior art, the volume of the boiler is set to be small, and water is added into the boiler again after liquid in the boiler is evaporated so as to accelerate the generation speed of steam. However, the steam generated in this manner is not continuous. Moreover, the dryness and humidity of the steam generated by the boiler water storage heating mode are difficult to control, and the humidity of the steam is usually high, so that the steam can not be applied to the condition that the dry steam is required to be used; and because the steam is gas-liquid mixed steam with high humidity, the temperature is often difficult to reach high temperature, and the steam is difficult to be applied to the situation needing high-temperature steam.

Another steam generation method in the prior art is a continuous heater method. Chinese patent application publication No. CN110382953A discloses a method for operating a steam generating apparatus, which employs a continuous heater into which liquid is continuously fed to be heated and evaporated. However, the solution of heating and generating steam by using a continuous heater has high requirement on the thermal efficiency of the continuous heater, otherwise it is difficult to evaporate the liquid to generate steam in a short time, resulting in high humidity of the generated steam. Moreover, as the continuous water inlet time is increased, the temperature of the continuous heater is reduced, so that the quality of the generated steam is inconsistent at different stages in the long-time operation process, and the quality stability of the generated steam is poor.

The chinese patent application publication No. CN102454975A proposes a scheme of intermittently turning on and off the water inlet by frequently turning on and off the water pump, aiming at the problem of insufficient steam temperature caused by insufficient water heating due to too low vaporization temperature, so as to avoid the situation of too low vaporization temperature or to raise the vaporization temperature back to normal as soon as possible after the occurrence of the situation. However, the water pump intermittently opens and closes the water inlet, and the following defects exist: 1) The resistance of the water pump at the beginning of starting is large, the starting current of the water pump is large, frequent starting and closing inevitably affects the service life of the water pump, and when the starting and stopping frequency is too high, the corresponding requirements are difficult to achieve by the existing water pump manufacturing technology; 2) The water inlet is discontinuous, and when the discontinuous time is longer, the generated steam is also discontinuous and discontinuous; 3) Because its water inflow is interrupted, consequently can't provide continuous water pressure, in the time quantum of not intaking, the steam that produces in the vaporization chamber just can pass through the pipeline between water pump and the vaporization chamber and flow backward to water pump department, so lead to on the one hand the water pump heated, the water pump resistance is big once more opened, has aggravated the damage of water pump, on the other hand makes steam outlet exhaust steam present obvious strong and weak intermittent, can't produce continuous, stable steam.

In view of the above, a new technical solution is needed to solve the above problems in the prior art.

Disclosure of Invention

The application provides a steam generation system and steam equipment, aims at solving or at least partially solves the not enough that the above-mentioned background art exists, and this steam generation system not only can continuously stably produce steam, and steam production's is fast moreover, and the temperature of steam is controllable simultaneously, can produce the dry steam of high temperature.

The application is realized by the following technical scheme: the utility model provides a steam generation system, includes liquid inlet, steam outlet to and connect solenoid valve and steam generator between liquid inlet and steam outlet, the solenoid valve is connected between liquid inlet and steam generator, wherein, steam generation system still includes the water pump, the water pump connect in the solenoid valve with between the steam generator, the solenoid valve with connecting pipeline between the water pump is to being less than near the filling section of part for being full of liquid of water pump, the water pump is under the on-state, the frequent switching action of solenoid valve with to intake in the steam generator, through the solenoid valve with liquid behind the water pump is the pulsed rivers that have strong and weak alternation, wherein, the water pump under the on-state just the solenoid valve forms for intaking when opening the strong rivers section of pulsed rivers, the water pump under the on-state just the intake of solenoid valve when closing forms the weak rivers section of pulsed rivers.

Further, when the water pump is in an on state, a connecting pipeline between the electromagnetic valve and the water pump is filled with liquid.

Further, the steam generator comprises a heating device, the heating device comprises a heating pipe and a steam pipe, the heating pipe is in heat conduction connection with the steam pipe, and an outlet of the water pump is communicated with a water inlet of the steam pipe.

Furthermore, the heating device also comprises a heater base, the heater base is made of heat conduction materials, the heating pipe and the steam pipe are both embedded in the heater base, and the heating pipe and the steam pipe conduct heat through the heater base.

Further, the steam generator further comprises a temperature sensor, and the temperature sensor is arranged on the heater base.

Further, temperature sensor includes first temperature sensor and second temperature sensor, first temperature sensor with second temperature sensor all set up in on the heater base, first temperature sensor with second temperature sensor is used for detecting heating device's normal operating temperature and shutoff protection temperature respectively.

Furthermore, a one-way valve is arranged on a pipeline between the outlet of the water pump and the inlet of the steam generator.

Further, the water pump is an electromagnetic pump.

The application is also realized by the following technical scheme: a steam plant comprising a steam generating system according to any of the above claims.

Further, the steam equipment is one of a steam car washer, a steam mop, a steam disinfection cabinet, a steam iron, a steam hanging ironing machine, a steam dish washing machine and a steam-ozone sterilizing machine.

The application provides a steam generation system, solenoid valve and water pump have set gradually between liquid import to steam generator, at the during operation, the control solenoid valve is the switching frequently, the solenoid valve of frequent switching and the water pump combined action that opens, make liquid be the pulsed rivers that have strong and weak change and carry to steam generator, thereby at the in-process in turn of strong and weak rivers, steam generator's temperature can form steam with liquid steam fast, and can resume fast to the temperature that can produce preset quality steam, can produce the dry steam of high temperature. The steam generating speed is high, the generated steam is continuous, and the quality 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 structural view of a steaming device in an embodiment of the present invention.

Fig. 2 is a block diagram showing the structure of a steam generation system according to an embodiment of the present invention.

Fig. 3 is a schematic structural view of a steam generator according to an embodiment of the present invention.

Fig. 4 is a schematic cross-sectional view of fig. 3.

Fig. 5 is a schematic view of the partially exploded structure of fig. 3.

Fig. 6 is an exploded view of the heating apparatus of fig. 5.

Fig. 7 is a plan view of the heat generating pipe and the steam pipe of fig. 6.

Fig. 8 is a schematic view of an exploded structure of the heat generating pipe and the steam pipe of fig. 6.

Fig. 9 is a perspective view schematically illustrating an internal structure of the heater base of fig. 6.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same 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.

A steam generation system of the present application will be described in detail below 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 9, the present application provides a steam generating system, which includes a liquid inlet 81, a steam outlet 82, and a solenoid valve 3 and a steam generator 1 connected between the liquid inlet 81 and the steam outlet 82, wherein the solenoid valve 3 is connected between the liquid inlet 81 and the steam generator 1. The steam generating system further comprises a water pump 4, the water pump 4 is connected between the electromagnetic valve 3 and the steam generator 1, and at least a part of a connecting pipeline 2 between the electromagnetic valve 3 and the water pump 4, which is close to the water pump 4, is a filling section filled with liquid. When the water pump 4 is in an on state, the electromagnetic valve 3 is frequently opened and closed to feed water into the steam generator 1, and the liquid passing through the electromagnetic valve 3 and the water pump 4 is a pulse type water flow with alternating intensity. Wherein, water pump 4 under the on-state just the intaking of solenoid valve 3 when opening forms the strong rivers section of pulsed rivers, water pump 4 under the on-state just the intaking of solenoid valve 3 when closing forms the weak rivers section of pulsed rivers. The liquid inlet 81, the electromagnetic valve 3, the water pump 4, the steam generator 1 and the steam outlet 82 are connected through a pipeline, liquid enters from the liquid inlet 81, enters the steam generator 1 through the electromagnetic valve 3 and the water pump 4, is heated and evaporated into steam, and then is discharged through the steam outlet 82.

The water pump 4 is used for providing power for driving liquid to flow, and controlling water inflow or stopping water inflow, and in one embodiment, the water pump 4 is an electromagnetic pump. The water pump 4 is connected between the electromagnetic valve 3 and the steam generator 1, the water pump 4 generates pressure to drive liquid to flow into the steam generator 1 when in work, and the water outlet end of the water pump 4 is directly connected with the steam generator 1, so the pressure generated by the water pump 4 is enough to overcome the pressure in a pipeline at the end, connected with the water pump 4, of the steam generator 1 so as to avoid reverse flow; due to the water pump 4 arranged between the electromagnetic valve 3 and the steam generator 1, the electromagnetic valve 3 is also protected from pressure and temperature from the steam generator 1, and the service life and the stability of the working performance of the electromagnetic valve 3 are ensured. The water pump 4 and the electromagnetic valve 3 are controlled by related signals to ensure the working linkage matching between the two. If the steam generating system comprises a controller 7, the controller 7 is simultaneously connected with the steam generator 1, the electromagnetic valve 3 and the water pump 4 through electric signals so as to coordinate and control the opening and closing of the steam generator 1, the electromagnetic valve 3 and the water pump 4 and the working mode.

Specifically, the steam generating system of this embodiment is during operation, firstly through controller 7 with steam generator 1 heat to preset temperature (for example above 240 ℃), then through controller 7 control water pump 4 work, control solenoid valve 3 opens and closes according to the frequency of predetermineeing simultaneously, the solenoid valve 3 of frequent switching and the water pump 4 that lasts to open the combined action, make liquid be the pulsed rivers that have strong and weak change and carry to steam generator 1, thereby in the alternate in-process of strong and weak rivers, the temperature of steam generator 1 can form steam with liquid steam fast, and when the state of intaking was in weak current section, steam generator 1's temperature intensification was faster, can resume fast to the temperature that can produce preset quality steam, thereby can produce high-temperature dry steam. The steam generating speed is high, the generated steam is continuous, and the quality is stable and controllable.

Further, as shown in fig. 6, in the present embodiment, the steam generator 1 includes a heating device 11, the heating device 11 includes a heat generating pipe 111 and a steam pipe 112, the heat generating pipe 111 is connected to the steam pipe 112 in a heat conducting manner, and a water outlet end of the water pump 4 is communicated with a water inlet of the steam pipe 112. Further, in the present embodiment, the heating device 11 includes a heater base 113, the heater base 113 is made of a heat conducting material, the heating tube 111 and the steam tube 112 are embedded in the heater base 113, and the heating tube 111 and the steam tube 112 conduct heat through the heater base 113. Of course, in other embodiments, the heat generating tubes 111 and the steam tubes 112 may also transfer heat by direct contact heat transfer or other means.

Further, as shown in fig. 6, in the present embodiment, the steam generator 1 further includes a temperature sensor 14, the temperature sensor 14 is disposed on the heater base 113, and the temperature sensor 14 is in electrical signal connection with the controller 7 to transmit the temperature information of the heating device 11 to the controller 7.

Specifically, in the steam generator 1 of the present embodiment, the heater base 113 is used to transfer heat between the heating tube 111 and the steam tube 112, that is, the heat generated by the heating tube 111 is firstly transferred to the heater base 113, and then the heat is transferred to the steam tube 112 by the heater base 113, so that the steam tube 112 is heated uniformly and rapidly. Moreover, because the heating tube 111 and the steam tube 112 are embedded in the heater base 113, the heating tube 111, the steam tube 112 and the heater base 113 are in close contact with each other, so that the three have good heat-conducting performance, and the heat loss in the heat-conducting process is reduced. Meanwhile, the temperature sensor 14 is arranged on the heater base 113, the temperature of the steam can be accurately controlled by the temperature sensor 14 (because the heating pipe 111 is a heating source, the temperature of the heating pipe is higher than the temperature of the steam, and the temperature cannot represent the temperature of the steam, and because water flows through the steam pipe 112, the temperature of each part of the steam pipe 112 is uneven, the temperature sensor 14 cannot be arranged on the heating pipe 111 or the steam pipe 112, otherwise, the temperature detection value is inaccurate), and the dryness and humidity of the steam can be further controlled. This steam generator 1 is not only heat conduction efficiency high, and steam production is fast, and steam pipe 112 is heated evenly moreover, can guarantee the production quality of steam (better such as the temperature homogeneity of steam, dry humidity homogeneity), can control the temperature and the dry humidity of steam simultaneously.

Specifically, in the present embodiment, the heating device 11 is an electric heating device, that is, the heating tube 111 is an electric heating tube, two ends of the heating tube 111 are respectively provided with a first electric connection end 1111 and a second electric connection end 1112, and the first electric connection end 1111 and the second electric connection end 1112 of the heating tube 111 are connected to an external circuit and then generate heat energy through an electric heating manner. Both ends of the steam pipe 112 are respectively provided with a water inlet 1121 and a steam outlet 1122, and water enters the steam pipe 112 from the water inlet 1121, is heated to form steam, and is discharged through the steam outlet 1122. In operation, when the temperature sensor 14 detects that the temperature of the heater base 113 reaches a set value, the controller 7 controls the inflow of water into the steam pipe 112 to generate steam; meanwhile, the temperature and the dryness and humidity of the steam (the temperature of the steam corresponds to the dryness and humidity of the steam) can be controlled by adjusting the set value.

Further, as shown in fig. 6, in the present embodiment, the temperature sensor 14 is disposed close to the heat generation pipe 111 and the steam pipe 112, and the temperature sensor 14 is not in contact with the heat generation pipe 111 and the steam pipe 112, so as not to cause the heat generation pipe 111 and the steam pipe 112 to affect the temperature detection value of the temperature sensor 14.

Further, as shown in fig. 6, in the present embodiment, the heater base 113 is provided with a mounting hole 115, and the temperature sensor 14 is disposed in the mounting hole 115. In this embodiment, the inner wall of the mounting hole 115 is threaded to facilitate the installation of the temperature sensor 14, i.e., the temperature sensor 14 is screwed into the mounting hole 115.

Further, as shown in fig. 5 and 6, in the present embodiment, the temperature sensor 14 includes a first temperature sensor 141 and a second temperature sensor 142, and both the first temperature sensor 141 and the second temperature sensor 142 are disposed on the heater base 113.

Specifically, the first temperature sensor 141 and the second temperature sensor 142 are used to detect the normal operating temperature and the off protection temperature of the heating device 11, respectively. In operation, when the first temperature sensor 141 detects that the temperature of the heater base 113 reaches a set value, the controller 7 controls the inflow of water into the steam pipe 112 to generate steam; meanwhile, the temperature and the dryness and humidity of the steam can be controlled by adjusting the set value. Under normal conditions, when the first temperature sensor 141 works normally (i.e. the first temperature sensor 141 is not damaged), the temperature of the heating device 11 is controlled to be near the normal working temperature, and the heating device 11 will not overheat, but when the first temperature sensor 141 fails and cannot detect the temperature, the heating device 11 will continuously heat and dry heat, and there is a safety hazard. Therefore, the second temperature sensor 142 is mainly used for over-temperature protection, when the temperature detected by the second temperature sensor 142 reaches the shutdown protection temperature, the controller 7 controls the steam generator 1 to stop working, and meanwhile, a character or sound warning can be set to remind a user that the temperature detection fails and the maintenance is needed in time. Wherein the set value of the turn-off protection temperature should be higher than the set value of the normal working temperature.

Further, as shown in fig. 6, in the present embodiment, the mounting holes 115 include first and second mounting holes 1151 and 1152 that are spaced apart, and the first and second temperature sensors 141 and 142 are respectively disposed in the first and second mounting holes 1151 and 1152.

Further, in the present embodiment, the heater base 113 is formed by casting, and the heater base 113 is a cast aluminum piece or a cast copper piece.

Specifically, during the manufacturing process, the manufactured heating tube 111 and steam tube 112 may be placed in a mold (not shown), and then molten aluminum or copper may be cast into the mold, and the heater base 113 may be obtained after the aluminum or copper is cooled. Since the heater base 113 is formed by casting, the heater base 113 can be in close contact with the heat generation pipe 111 and the steam pipe 112, i.e., the heat generation pipe 111 and the steam pipe 112 are closely covered by the heater base 113; meanwhile, since the heater base 113 is made of a material having excellent heat conductivity, such as copper or aluminum, the heat generated by the heating tube 111 can be rapidly conducted to the heater base 113, and the heater base 113 conducts the heat to the steam tube 112, so that the steam tube 112 is uniformly heated and rapidly heated, and the heat loss during the heat conduction process can be reduced. As shown in fig. 9, molten aluminum or copper is poured into the mold, and after the aluminum or copper is cooled, the heater base 113 is obtained, the heater base 113 is filled with the parts except for the heating tube 111 and the steam tube 112, the accommodating cavity 1131 inside the heater base 113 is formed by the heating tube 111 and the steam tube 112, the shape and the size of the accommodating cavity 1131 are the same as those of the heating tube 111 and the steam tube 112, and the heating tube 111 and the steam tube 112 are both located in the accommodating cavity 1131. Of course, in other embodiments, the heater base 113 may be formed by other methods.

Further, as shown in fig. 4 and 6, in the present embodiment, the heat generating pipe 111 and the steam pipe 112 are disposed close to each other in the heater base 113, thereby improving heat transfer efficiency between the heat generating pipe 111 and the steam pipe 112.

Further, as shown in fig. 6 to 8, in the present embodiment, the heating tube 111 and the steam tube 112 are both bent to form a spiral structure, and the heating tube 111 and the steam tube 112 are sleeved with each other. Specifically, by providing the heat generation pipe 111 and the steam pipe 112 in a spiral structure, the heat transfer area of the heat generation pipe 111 and the steam pipe 112 in the heater base 113 can be increased, thereby improving heat transfer efficiency; meanwhile, as the heating tube 111 and the steam tube 112 are sleeved with each other, the occupied space of the heating tube 111 and the steam tube 112 can be reduced, so that the size of the steam generator 1 is reduced, heat generated by the heating tube 111 can be uniformly conducted to each position of the steam tube 112, and the uniformity of steam is ensured.

Further, as shown in fig. 4 and 7, in the present embodiment, the winding diameter of the steam pipe 112 is larger than the winding diameter of the heating pipe 111, the steam pipe 112 is sleeved outside the heating pipe 111 (of course, in other embodiments, the heating pipe 111 is sleeved outside the steam pipe 112), a gap 114 is provided between the steam pipe 112 and the heating pipe 111, and the heater base 113 fills the gap 114 between the steam pipe 112 and the heating pipe 111. In the present embodiment, since the gap 114 is formed between the steam pipe 112 and the heat generating pipe 111, that is, the steam pipe 112 does not directly contact with the heat generating pipe 111 for heat transfer, but indirectly transfers heat through the heater base 113, uneven heating of the steam pipe 112 caused by direct contact between the steam pipe 112 and the heat generating pipe 111 can be avoided.

Further, as shown in fig. 6, in the present embodiment, the heat generating pipe 111 and the steam pipe 112 are both of a circular pipe structure, and the heater base 113 is of a cylindrical structure. Of course, in other embodiments, the heater base 113 may have a square column structure (i.e., a rectangular parallelepiped or square structure) or other shapes.

Further, as shown in fig. 6, in the present embodiment, the heater base 113 is provided with a first through hole 1132 and a second through hole 1133, and the water inlet 1121 and the steam outlet 1122 of the steam pipe 112 respectively pass through the first through hole 1132 and the second through hole 1133 and then are exposed outside the heater base 113, so as to facilitate connection between the steam pipe 112 and an external pipeline. The heater base 113 is provided with a first through hole 1134 and a second through hole 1135, and the first electrical connection end 1111 and the second electrical connection end 1112 of the heating tube 111 respectively pass through the first through hole 1134 and the second through hole 1135 and then are exposed outside the heater base 113, so as to facilitate the connection between the heating tube 111 and an external circuit.

Further, as shown in fig. 3 and 4, in the present embodiment, the steam generator 1 further includes a housing 12, and the heating device 11 is disposed in the housing 12. In this embodiment, an insulating layer 13 is provided in the casing 12, and the insulating layer 13 is located between the outer wall of the heater base 113 and the inner wall of the casing 12. Through setting up heat preservation 13, can improve steam generator 1's heat preservation function, reduce the inside thermal giving off of steam generator 1, improve steam generator 1's heating efficiency to reduce steam generator 1 to the heat radiation of peripheral equipment.

Further, in this embodiment, the insulating layer 13 is made of heat insulation cotton. The heat insulation cotton has the advantages of high temperature resistance, difficult combustion, low heat conductivity coefficient and the like, and the cost is relatively low. Of course, in other embodiments, the insulating layer 13 may also be made of aerogel, vacuum plate, etc.

Further, as shown in fig. 1 and 2, in the present embodiment, a one-way valve 5 is disposed on a pipe between the water outlet end of the water pump 4 and the inlet of the steam generator 1 to prevent the water or the generated steam in the steam generator 1 from flowing back.

As shown in fig. 1, an embodiment of the present invention further provides a steam device, which includes the steam generation system described above. The steam equipment is one of a steam car washer, a steam mop, a steam disinfection cabinet, a steam iron, a steam hanging ironing machine, a steam dish washing machine and a steam-ozone sterilizing machine.

Further, as shown in fig. 2, in the present embodiment, the steam device is, for example, a steam cleaning device, which further includes a washing gun 6, an inlet of the washing gun 6 is communicated with an outlet of the steam generator 1, and steam generated by the steam generator 1 can be sprayed through the washing gun 6 to perform a washing operation.

Further, as shown in fig. 1, in the present embodiment, the steaming device further includes a housing 8, the steam generation system is disposed inside the housing 8, and the washing gun 6 is disposed outside the housing 8 (the washing gun 6 is not shown in fig. 1). The liquid inlet 81 and the steam outlet 82 extend out of the housing 8 for connecting the water tank and the washing gun 6, the liquid inlet 81 and the steam outlet 82 being provided with screw joints.

The steam generation process using the steam generation system described above is as follows:

controlling the steam generator 1 to be heated to a preset temperature;

controlling the water pump 4 to work to drive the liquid to be conveyed from the liquid inlet 81 to the steam generator 1 in a heating state through the electromagnetic valve 3 and the water pump 4 in sequence;

in the working period of the water pump 4, the electromagnetic valve 3 is alternately switched on and off at a preset frequency, so that the liquid intermittently passes through the electromagnetic valve 3, and the liquid passing through the electromagnetic valve 3 is conveyed to the steam generator 1 through pulse type continuous water flow with alternately changed intensity after passing through the water pump 4; wherein the pulsed continuous flow of water is continuously flowing inside the steam generator 1 and at least partially evaporated before flowing out of the steam generator 1.

In the work of the steam generation system provided by the application, because the electromagnetic valve 3 is on-off, the instant water flow passing through the electromagnetic valve 3 is discontinuous water flow; after passing through the electromagnetic valve 3, water flow enters the water pump 4 through a pipeline between the electromagnetic valve 3 and the water pump 4, the water flow passing through the water pump 4 is modulated into continuous water flow with strength change, and the continuous water flow is not discontinuous, so that the problems of discontinuous steam generation and steam backflow existing when the water flow enters the steam generator 1 discontinuously can be avoided. In this embodiment, the pipeline between the electromagnetic valve 3 and the water pump 4 is filled with liquid, and during the operation of the water pump 4, the electromagnetic valve 3 is alternately turned on and off so that the liquid between the water pump 4 and the electromagnetic valve 3 is in two alternate environmental states, that is, the state where the water pump 4 is turned on and the electromagnetic valve 3 is also turned on and the state where the water pump 4 is turned on and the electromagnetic valve 3 is turned off. Under the condition that the water pump 4 is on and the electromagnetic valve 3 is also on, the liquid between the water pump 4 and the electromagnetic valve 3 is in a state that both ends are unblocked, the driving force provided by the water pump 4 can discharge a certain amount of liquid between the water pump 4 and the electromagnetic valve 3 to the steam generator 1 through the water pump 4, and simultaneously, the liquid coming from the liquid inlet 81 can be sucked between the water pump 4 and the electromagnetic valve 3 through the electromagnetic valve 3. In this state, because both ends of the liquid between the water pump 4 and the electromagnetic valve 3 are in a smooth state, the water pump 4 drives the liquid to flow into the steam generator 1 at the moment, and a strong water flow part in the pulse type water flow with the strength changing is formed. When the water pump 4 is on and the electromagnetic valve 3 is off, the upstream of the liquid between the water pump 4 and the electromagnetic valve 3 is off, the liquid between the water pump 4 and the electromagnetic valve 3 is in a relatively closed environment at the moment, the water pump 4 drives the liquid at the moment to flow into the steam generator 1 to overcome negative pressure, and at the moment, the water inflow of the liquid driven by the water pump 4 to flow into the steam generator 1 is smaller, so that a weak water flow part in the pulse type water flow with the variable intensity is formed. When the solenoid valve 3 is repeatedly turned on and off at a predetermined frequency, the water flow passing through the liquid 3 is continuously pulsed and changes in intensity, and is sent to the steam generator 1. By adopting the scheme, the water inlet into the steam generator 1 is continuous, and a small amount of water can generate a large amount of steam, so that the generated steam cannot have obvious interruption or be in a state of large and small time when the steam amount is large after passing through the pipeline and the steam nozzle, and the generated steam is continuous and stable.

In another embodiment, the part of the pipeline between the solenoid valve 3 and the water pump 4 close to the water pump 4 is a filling segment filled with liquid. That is, the pipe between the solenoid valve 3 and the water pump 4 may not be completely filled with liquid, but may be filled with liquid at a section near the water pump 4. In the component arrangement of the steam generating system, the electromagnetic valve 3 may be arranged at a position higher than that of the water pump 4, and connected to the pipeline between the electromagnetic valve 3 and the water pump 4, and the lower half of the pipeline is a filling section filled with liquid, and the upper half of the pipeline may be empty. When the electromagnetic valve 3 is in the on-off alternate working, the liquid is dripped to the filling section through the electromagnetic valve 3 in one section, and the water pump 4 is in a continuous water state during working, so that the water pump 4 is prevented from being pumped in an empty mode.

Further, the temperature of the steam is controlled by the on-off time parameter of the solenoid valve 3 and/or the heating temperature parameter of the steam generator 1.

Specifically, the steam generating system is provided with different gears, and the opening and closing time parameters of the electromagnetic valve 3 and/or the heating temperature parameters of the steam generator 1 are different under different gears, so that different temperatures of steam formed by evaporation are realized, and different humidity and dryness are realized; under different gears, the operation parameters of each part in the steam generation system are preset in the controller 7 and are controlled by a built-in program of the controller 7. The steam generator 1 has a low heating temperature and/or the electromagnetic valve 3 has a large water inflow (i.e. the electromagnetic valve 3 has a relatively long opening time at each frequency, and the steam generator 1 has a relatively large water inflow at each frequency), the steam has a high humidity; the steam generator 1 has a high heating temperature and/or the solenoid valve 3 has a small water inflow (i.e. the solenoid valve 3 has a relatively short opening time per frequency and the steam generator 1 has a relatively small water inflow per frequency), the steam has a low humidity.

The steam generating system provided by the embodiment of the invention can timely and quickly heat up to the equilibrium temperature of generating stable-quality steam in the process of alternating strong and weak water flows of the steam generator 1 by forming a water inlet mode of pulse type continuous water flows with alternating strong and weak changes, namely, the temperature of the steam generator 1 always floats near the temperature capable of generating preset steam quality, therefore, when water flow enters the steam generator 1 in each pulse period, the self state of the steam generator 1 is the same or almost the same, temperature reduction caused by heat absorption of evaporation of the front water flow is avoided, and steam generated by the steam generator can be dry steam with low humidity and is continuous and stable and controllable in quality. Moreover, since the solenoid valve 3 only provides a water flow on-off function without providing power for driving the water flow, the starting current of the solenoid valve 3 is small compared to the water pump 4. This application passes through frequent start-up of solenoid valve 3, and water pump 4 maintains and is lasting the open state, can realize the rivers control of higher accuracy to and reducible frequent on-off control to water pump 4, can promote the life of water pump.

In an embodiment of the present application, the steam outlet 82 has an open state and a closed state, and when the steam outlet 82 is in the closed state, the operation control process of the steam generation system further includes: controlling the steam generator 1 to be in a heating state, and controlling the water pump 4 and the electromagnetic valve 3 to intermittently work so as to intermittently feed water into the steam generator 1.

In an exemplary embodiment, the open and closed states of the steam outlet 82 are manually controlled by a user, so that the user can control the steam to be turned off and discharged at any time. For example, in one embodiment, after the liquid is evaporated into steam in the steam generator 1, the liquid 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 grip and release the trigger to switch the opening state and the closing state of the steam outlet 82.

When the steam outlet 82 is in a closed state, the steam generated in the steam generating system cannot be discharged through the steam outlet 82, 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 users. In this embodiment, when the steam outlet 82 is in the closed state, the steam generator 1 is controlled to be in the heating state, and the water pump 4 and the electromagnetic valve 3 are controlled to intermittently operate to intermittently supply water to the steam generator 1. So set up have following beneficial effect: controlling the steam generator 1 to be still in a heating state can ensure that steam can be generated in time when the user opens the steam outlet 82. Because the user often needs frequent opening and closing of steam when using the steam generating system, when the steam outlet 82 is in the closed state, if the steam generator 1 is controlled not to heat at this time, the temperature of the steam generator 1 is lowered, when the time that the steam outlet 82 is in the closed state is longer, the temperature of the steam generator 1 is lowered more, and when the user opens the steam outlet 82 again, the steam generated at this time cannot reach the preset quality. For example, when the user closes the steam outlet 82 for a certain period of time during dry cleaning of the laundry using relatively dry steam, the steam outlet 82 is opened again, and the humidity of the generated steam is relatively high due to the temperature decrease of the steam generator 1, thereby wetting the laundry. On the other hand, because the steam generator 1 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 water pump 4 and the electromagnetic valve 3 are controlled not to feed water, the temperature of the steam generator 1 is continuously increased, and dry heating is caused. Based on this, in the present embodiment, on the premise that the steam generator 1 is controlled to be in the heating state, the water pump 4 and the electromagnetic valve 3 are controlled to intermittently operate to intermittently feed water into the steam generator 1. So set up, both avoided continuing that a large amount of steam that the intaking produced is difficult to the exhaust problem, avoided steam generator 1 to continue to heat up again, caused the overheated problem of dry combustion method.

Further, the controlling the steam generator 1 to be in a heating state and the water pump 4 and the electromagnetic valve 3 to intermittently operate to intermittently feed water into the steam generator 1 includes: controlling the steam generator 1 to work and detecting the working state of the steam generator 1, controlling the water pump 4 and the electromagnetic valve 3 to work to supply water to the steam generator 1 when the working state of the steam generator 1 reaches a preset condition, and controlling the water pump 4 and the electromagnetic valve 3 to stop supplying water to the steam generator 1 when the working state of the steam generator 1 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 generator 1, so that the working state of the steam generator 1 can be well controlled and maintained, the actual working state of the steam generator 1 is prevented from deviating from the working state when the steam generator can generate steam with preset quality excessively, and the generation of the steam with controllable quality at any time is ensured. The working state reaching the preset condition can be one or more of reaching preset time, preset pressure and preset temperature. Preferably, in an embodiment, the reaching of the preset condition of the operating state of the steam generator 1 includes that an actual temperature of the steam generator 1 reaches a preset temperature. That is, whether water is fed or not is controlled by the temperature of the steam generator 1 when the steam outlet 82 is in a closed state, when the temperature of the steam generator 1 reaches a preset temperature, the water pump 4 and the electromagnetic valve 3 are controlled to feed water, and at this time, the temperature of the steam generator 1 is reduced to be lower than the preset temperature, and the water pump 4 and the electromagnetic valve 3 stop feeding water; when the temperature of the steam generator 1 is raised to the preset temperature again, the water pump 4 and the electromagnetic valve 3 are controlled to feed water again, and the operation is repeated, so that intermittent water feeding is realized. In the intermittent water inlet process, water inlet and water inlet stopping are mainly realized by the water pump 4, and the electromagnetic valve 3 is mainly used for realizing a pulse type continuous water flow water inlet mode in a water inlet stage. In other words, the frequency of the intermittent operation of the water pump 4 and the electromagnetic valve 3 is less than the preset frequency of the on-off alternate operation of the electromagnetic valve 3, that is, in an intermittent water feeding process, the electromagnetic valve 3 still has a process of on-off alternate operation for a plurality of times.

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 generating system further includes a pressure relief valve, and the operation control process of the steam generating system 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.

In the state where the steam outlet 82 is opened, the control process includes: controlling the steam generator 1 to be in a heating state, and controlling the water pump 4 and the electromagnetic valve 3 to work to feed water; and the heating of the steam generator 1 is configured in relation to the water inlet controlled by the water pump 4 and the solenoid valve 3 such that the heat generated by the steam generator 1 per unit time is not less than the heat consumed by the water inlet controlled by the water pump 4 and the solenoid valve 3 per unit time.

That is, when the steam outlet 82 is in the open state, the liquid is controlled to continuously feed water into the steam generator 1, so as to ensure the continuity of the generated steam. In the state of continuous water inlet, in order to avoid the temperature drop of the steam generator 1, it is required to set the heat generated by the steam generator 1 in unit time to be not less than the heat consumed by the water pump 4 and the water inlet controlled by the solenoid valve 3 in unit time, so that the steam generator 1 can be heated to the preset temperature from the 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 is described herein with respect to the intermittent water supply in which the steam outlet 82 is closed, and it should be understood that the continuous water supply and the intermittent water supply are described herein with respect to the continuous on/off of the water pump 4, and the manner of water supply by the pulse water flow controlled by the solenoid valve 3 is not changed.

As can be seen from the above description of the specific embodiments, the control method for generating continuous steam provided by the present application feeds water by a pulse type continuous water flow with alternating intensity, and the pulse type continuous water flow is heated and evaporated in the process of continuously flowing in the steam generator 1, so that the speed of generating steam is fast; moreover, because the inflow water into the steam generator 1 is pulse type continuous water flow, the steam generator 1 can be rapidly heated and restored to the balance temperature capable of generating steam with preset quality in the alternating process of water flow strength, thereby ensuring that when each pulse type water flow enters the steam generator 1, the self state of the steam generator 1 is the same or almost the same, the temperature can not be reduced due to the heat absorption of the evaporation of the front water flow, the generated steam can be dry steam with smaller humidity, and the steam is continuous and stable and controllable in quality.

Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.

Claims (10)

1. The utility model provides a steam generation system, includes liquid inlet, steam outlet to and connect solenoid valve and steam generator between liquid inlet and steam outlet, the solenoid valve is connected between liquid inlet and steam generator, its characterized in that, steam generation system still includes the water pump, the water pump connect in the solenoid valve with between the steam generator, the solenoid valve with connecting pipeline between the water pump is to being less than near the full section of filling of part of water pump for being full of liquid, the water pump is under the open mode, the frequent switching action of solenoid valve is with to water in the steam generator, through the solenoid valve with liquid behind the water pump is the pulsed rivers that have strong and weak alternation, wherein, the water pump under the open mode just the water inflow of solenoid valve when opening forms the strong rivers section of pulsed rivers, the water pump under the open mode just the water inflow when the solenoid valve is closed forms the weak rivers section of pulsed rivers.

2. The steam generating system as claimed in claim 1, wherein the connection line between the solenoid valve and the water pump is filled with liquid when the water pump is in an on state.

3. The steam generation system of claim 1, wherein the steam generator includes a heating device including a heat-generating tube and a steam tube, the heat-generating tube and the steam tube being in thermally conductive communication, the outlet of the water pump being in communication with the inlet of the steam tube.

4. The steam generating system of claim 3, wherein the heating device further comprises a heater base, the heater base being made of a thermally conductive material, the heating tube and the steam tube being embedded in the heater base, the heating tube and the steam tube transferring heat through the heater base.

5. The steam generation system of claim 4, wherein the steam generator further comprises a temperature sensor disposed on the heater base.

6. The steam generating system of claim 5, wherein the temperature sensor includes a first temperature sensor and a second temperature sensor, the first temperature sensor and the second temperature sensor being disposed on the heater base, the first temperature sensor and the second temperature sensor being configured to detect a normal operating temperature and a turn-off protection temperature of the heating device, respectively.

7. The steam generating system of claim 1, wherein a one-way valve is provided in a conduit between an outlet of the water pump and an inlet of the steam generator.

8. The steam generation system of claim 1, wherein the water pump is an electromagnetic pump.

9. A steaming device comprising a steam generating system as claimed in any one of claims 1 to 8.

10. The steam appliance of claim 9, wherein the steam appliance is one of a steam car washer, a steam mop, a steam sterilizer, a steam iron, a garment steamer, a steam dishwasher, and a steam-ozone sterilizer.

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