CN106439765B - Steam generator, garment steamer and control method of steam generator - Google Patents
Steam generator, garment steamer and control method of steam generator Download PDFInfo
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- CN106439765B CN106439765B CN201610881916.1A CN201610881916A CN106439765B CN 106439765 B CN106439765 B CN 106439765B CN 201610881916 A CN201610881916 A CN 201610881916A CN 106439765 B CN106439765 B CN 106439765B
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- water level
- hot pot
- water
- detection signal
- heating element
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F73/00—Apparatus for smoothing or removing creases from garments or other textile articles by formers, cores, stretchers, or internal frames, with the application of heat or steam
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
Abstract
The invention provides a steam generator, a garment steamer and a control method of the steam generator, wherein the steam generator comprises: the water pump is arranged on a pipeline which is communicated with the hot pot and the water tank; a water level detecting assembly disposed in the hot pot and detecting a height change of a water level in the hot pot to generate a water level detecting signal; the temperature detection element is arranged at the bottom of the hot pot and is used for detecting the temperature change of the bottom of the hot pot so as to generate a temperature detection signal; and the electric control board is respectively electrically connected with the water pump, the water level detection assembly and the temperature detection element, and controls the working state of the heating element according to the temperature detection signal in the process of controlling the working state of the water pump according to the received first water level detection signal. This technical scheme makes and keeps suitable water yield in the hot pot through carrying out dual control, has effectively guaranteed the stationarity and the aridity of steam, has promoted ironing effect.
Description
Technical Field
The present invention relates to the field of household appliances, and more particularly, to a steam generator, a garment steamer, and a control method of a steam generator.
Background
At present, a garment steamer on the market supplies water by adopting a water pump, however, whether water exists in a boiler, the water level is large, whether a water inlet is blocked by scales and other various conditions cannot be judged, accidents such as excessive water spraying, too small water drying or fire firing and the like easily occur in the boiler, the ironing effect and the service life of the boiler are influenced, and the use safety and the use feeling of a user are also influenced.
Therefore, how to improve the accurate control to the water supply, accurate control water pump water supply makes keeping suitable water yield in the boiler become the technological problem that awaits solution urgently.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
To this end, an aspect of the present invention is directed to providing a steam generator.
It is an object of another aspect of the present invention to provide a garment steamer including the above steam generator.
It is another object of another aspect of the present invention to provide a control method of a steam generator.
To achieve at least one of the above objects, an embodiment of a first aspect of the present invention provides a steam generator including: the bottom of the hot pot is provided with a heating element for heating water in the hot pot; the water tank is communicated with the hot pot and stores the make-up water of the hot pot; the water pump is arranged on a pipeline communicated with the hot pot and the water tank and pumps water in the water tank into the hot pot; the water level detection assembly is arranged in the hot pot, detects the height change of the water level in the hot pot and generates a water level detection signal; the temperature detection element is arranged at the bottom of the hot pot, detects the temperature change of the bottom of the hot pot and generates a temperature detection signal; and the electric control board is respectively electrically connected with the water pump, the water level detection assembly and the temperature detection element, and controls the working state of the heating element according to the temperature detection signal in the process of controlling the working state of the water pump according to the received first water level detection signal.
The steam generator provided by the above embodiment of the invention controls the working state of the water pump according to the water level height change detected by the water level detection assembly arranged in the hot pot, namely controls the water pump to start and automatically pump water into the hot pot or stop pumping water according to the water level height change in the hot pot, effectively detects the temperature change of the position of the hot pot through the bottom temperature detection element arranged in the hot pot to control the working state of the heating element, namely judges whether the water inlet of the hot pot is normal or not through detecting the temperature change condition of the bottom of the hot pot to avoid the problem that the water inlet is blocked by scale so as not to realize normal water pumping, so that the proper water quantity is kept in the hot pot through double control, the accidents of excessive water spraying, excessive dry burning or fire firing of the water quantity and the like in the hot pot are effectively avoided, and the steam stability and the dryness are effectively ensured, the ironing effect is improved, the service life of the hot pot is prolonged, and the use safety and the use feeling of a user are ensured.
In the above embodiments, the heating element is welded, screwed or pressure-riveted on the bottom of the hot pot, or the heating element and the bottom of the hot pot are integrally formed by die-casting.
In addition, the steam generator provided by the above embodiment of the present invention further has the following additional technical features:
according to an embodiment of the invention, the electronic control board is further configured to: and after the heating element is controlled to stop heating according to the temperature detection signal, controlling the working state of the heating element according to the received second water level detection signal.
In this embodiment, if the electric control board controls the heating element to stop heating according to the temperature detection signal generated by the temperature change of the bottom of the hot pot in the process of controlling the working state of the water pump according to the water level height change detected by the water level detection assembly installed in the hot pot, it is indicated that the water quantity in the hot pot is less and accidents such as dry burning and fire may occur at this time.
According to an embodiment of the present invention, when the first water level detection signal indicates that the water level in the hot pot is lower than a first preset water level, the electric control board controls the water pump to start to operate, and when the first water level detection signal indicates that the water level in the hot pot is higher than or equal to the first preset water level, the electric control board controls the water pump to stop operating; when the temperature detection signal indicates that the temperature change rate of the bottom of the hot pot is greater than or equal to a preset change rate, the electric control board controls the heating element to stop heating, and when the temperature detection signal indicates that the temperature change rate is smaller than the preset change rate, the electric control board controls the heating element to keep heating; when the second water level detection signal indicates that the water level in the hot pot is higher than a second preset water level, the electric control board controls the heating element to start heating, and when the second water level detection signal indicates that the water level in the hot pot is lower than or equal to the second preset water level, the electric control board controls the heating element to stop heating, wherein the second preset water level is lower than the first preset water level.
In the embodiment, the electric control board controls the working state of the water pump according to the size relation between the real-time water level in the hot pot and the first preset water level, specifically, when the water level is lower than the first preset water level, the water pump is started, otherwise, the water pump is closed to stop pumping, and the water level in the hot pot is maintained in a state of being greater than or equal to the first preset water level through the control of the cyclic reciprocation, so that the steam generator can generate enough steam for ironing, and the ironing protection effect is improved; furthermore, in the above process, the working state of the heating element is controlled according to the relation between the real-time temperature change rate of the bottom of the hot pot and the preset change rate, if the temperature change rate is smaller than the preset change rate, it is indicated that the hot pot in the above process is normal in water inlet, the water amount in the hot pot is maintained at the proper water amount, the hot pot can be continuously heated for use, otherwise, it is indicated that the hot pot is abnormal in water inlet, the heating needs to be stopped for overheat protection to avoid accidents such as dry burning and fire, further, a water shortage alarm can be sent, for example, in a sound and light combined mode, to remind the user to confirm and solve the problem in time, and then after the heating is stopped, the working state of the heating element is controlled according to the relation between the water level in the hot pot and the second preset water level, namely whether the heating is recovered, wherein the second preset water level is smaller than the first preset water level, and particularly, if the second preset water level is higher than the second preset, namely, the abnormal situation of water inlet of the hot pot is effectively solved, the alarm can be stopped at the moment if the water shortage alarm is sent out before, otherwise, the heating stopping state is kept, and the water shortage alarm can be further sent out continuously.
According to one embodiment of the invention, the temperature sensing element is an NTC temperature sensing element.
In this embodiment, preferably, the NTC (Negative Temperature Coefficient) Temperature measuring element may be used to detect the Temperature change of the bottom of the hot pot, that is, the Temperature change rate is determined according to the resistance change rate of the NTC Temperature measuring element, and then the electric control board is supplied to determine whether the hot pot has normal water inlet, so as to achieve the protection effect.
According to an embodiment of the present invention, the water level detecting assembly includes a magnetic floating ball disposed in the hot pot, a sliding rod for limiting a movement track of the magnetic floating ball, and a magnetic sensitive switch disposed in the sliding rod and electrically connected to the electric control board, wherein the magnetic sensitive switch and the magnetic floating ball cooperate to sense a height change of a water level in the hot pot.
In the embodiment, the magnetic floating ball floats up and down along with the height of the water level in the hot pot to change the magnetic force of the magnetic floating ball on the magnetic sensitive switch, so that the on-off of the magnetic sensitive switch is controlled; and the electric control board is respectively electrically connected with the magnetic sensitive switch and the water pump to control the start and stop of the water pump, specifically, when the electric control board receives a switch-off signal (or a switch-on signal) of the magnetic sensitive switch, the water pump can be controlled to start pumping water, and when the electric control board receives the switch-on signal (or the switch-off signal) of the magnetic sensitive switch, the water pump can be controlled to stop pumping water, and the operation is repeated in a circulating way.
According to one embodiment of the invention, the lower end part of the sliding rod extends into the hot pot, and the upper end part of the sliding rod is detachably connected with the hot pot; and the upper end of the sliding rod is provided with a boss which protrudes outwards along the circumferential direction of the sliding rod, the boss is provided with an external thread, and the top of the hot pot is provided with a threaded hole matched with the external thread.
In the embodiment, the upper end part of the sliding rod is detachably connected with the hot pot, so that the sliding rod, the magnetic floating ball and the magnetic sensitive switch which are arranged on the sliding rod can be conveniently taken down for maintenance and replacement; preferably, the upper end part of the sliding rod is in threaded connection with the hot pot, so that the connection reliability of the sliding rod and the hot pot is guaranteed, the sliding rod is convenient to take down for maintenance and replacement, and other connection modes such as clamping connection and the like can be adopted between the sliding rod and the hot pot.
According to one embodiment of the invention, the magnetic floating ball is mounted on the sliding rod in a vertically sliding manner, the sliding rod is provided with a hollow cavity with an opening at the upper end, and the magnetic sensitive switch is positioned in the hollow cavity; when the water level in the hot pot rises to be higher than a first preset water level, the magnetic sensitive switch is switched on under the action of the magnetic force of the magnetic floating ball, and the electric control board controls the water pump to stop pumping water after receiving a switching-on signal of the magnetic sensitive switch; when the water level in the hot pot is reduced to be lower than a first preset water level, the magnetic floating ball disappears the magnetic action on the magnetic sensitive switch, the magnetic sensitive switch is switched off, and the electric control board controls the water pump to start pumping water after receiving a switching-off signal of the magnetic sensitive switch.
In the embodiment, when the water level in the hot pot changes, the magnetic floating ball floats up and down along with the height change of the water level under the buoyancy action of water, when the water level in the hot pot rises to be higher than a first preset water level, the magnetic floating ball moves upwards and approaches the magnetic sensitive switch, the magnetic action of the magnetic floating ball on the magnetic sensitive switch is enhanced, and the magnetic sensitive switch is switched on under the magnetic action of the magnetic floating ball; when the water level in the hot pot is reduced to be lower than a first preset water level, the magnetic floating ball moves downwards and is far away from the magnetic sensitive switch, the magnetic action of the magnetic floating ball on the magnetic sensitive switch disappears gradually, and the magnetic sensitive switch is switched off, so that the on-off of the magnetic sensitive switch is effectively controlled through the up-and-down floating of the magnetic floating ball, the structure is simple, and the control precision is high.
In the above embodiment, the magnetic floating ball is a high temperature resistant magnetic floating ball, and the height control of the water level can be realized by adjusting the position of the magnetic sensitive switch, which can be a reed switch, a hall switch, a capacitive proximity switch, and other magnetic sensitive switches.
According to an embodiment of the present invention, a first blocking rib for limiting the upward movement of the magnetic floating ball and a second blocking rib for limiting the downward movement of the magnetic floating ball are disposed on the outer side wall of the sliding rod, so that the magnetic floating ball slides up and down between the first blocking rib and the second blocking rib to prevent the magnetic floating ball from coming off the sliding rod, thereby ensuring the reliability of the movement of the magnetic floating ball and ensuring the accuracy of detecting the water level by the up-and-down floating of the magnetic floating ball.
According to one embodiment of the invention, the outer side wall of the sliding rod is provided with a limiting groove which is formed by inwards sinking, and the second blocking rib is detachably arranged in the limiting groove, so that the magnetic floating ball is sleeved on the sliding rod from bottom to top, and the magnetic floating ball is convenient to detach and install.
According to one embodiment of the invention, the hot pot is provided with a water outlet for discharging scale and water in the hot pot, and the water outlet is provided with a drain valve for controlling the opening and closing of the water outlet, so that the scale and water in the hot pot can be smoothly discharged.
According to one embodiment of the invention, the steam outlet of the hot pot is provided with an electromagnetic valve for controlling the opening, closing and opening degree of the steam outlet of the hot pot, so that the opening, closing and opening degree of the steam outlet of the hot pot are controlled through the electromagnetic valve, and the purpose of forming certain air pressure in the hot pot is achieved.
An embodiment of a second aspect of the invention provides a garment steamer comprising: a steam generator according to any of the above embodiments; and the steam nozzle is communicated with the steam outlet of the hot pot through a steam outlet pipe, and the garment steamer has the beneficial effects of the steam generator in any embodiment, and is not repeated herein.
An embodiment of a third aspect of the present invention provides a control method of a steam generator, for the steam generator of any one of the above embodiments, including: after the heating element is started to heat water in the hot pot, detecting the height change of the water level in the hot pot through the water level detection assembly and generating a water level detection signal; in the process of controlling the working state of the water pump according to a first water level detection signal generated by the water level detection assembly, detecting the temperature change of the bottom of the hot pot through the temperature detection element and generating a temperature detection signal; and controlling the working state of the heating element according to the temperature detection signal.
In the control method of the steam generator provided by the above embodiment of the invention, when the heating element of the steam generator is started to be in a heating working state, the working state of the water pump is controlled through the height change of the water level in the hot pot detected by the water level detection component, namely, the water pump is controlled to be started to automatically pump water into the hot pot or stop pumping water according to the height change of the water level in the hot pot, and in the process, the working state of the heating element is further controlled through the temperature change of the bottom of the hot pot detected by the temperature detection component, namely, whether the water inlet of the hot pot is normal or not is judged through detecting the temperature change condition of the bottom of the hot pot, so that the situation that the normal water pumping cannot be realized due to the blockage of the water inlet by the scale is avoided, and therefore, the proper water quantity is kept in the hot pot through double control, the accidents of excessive water spraying, insufficient water drying or, effectively guarantee the stationarity and the aridity of steam, promoted ironing effect, prolonged the life of hot pot to the security of using and user's use impression have been guaranteed.
In addition, the control method of the steam generator provided by the above embodiment of the present invention further has the following additional technical features:
according to an embodiment of the present invention, controlling the operating state of the heating element according to the temperature detection signal specifically includes: when the temperature detection signal indicates that the temperature change rate of the bottom of the hot pot is greater than or equal to a preset change rate, the heating element is controlled to stop heating through the electric control board; when the temperature detection signal indicates that the temperature change rate is smaller than the preset change rate, the heating element is controlled by the electric control board to keep heating.
In this embodiment, the operating state of the heating element is specifically controlled according to the magnitude relation between the real-time temperature change rate of the bottom of the hot pot and the preset change rate, if the temperature change rate is smaller than the preset change rate, it indicates that the hot pot is normal in water inlet in the process, the water amount in the hot pot is maintained at a proper water amount, and the hot pot can be continuously heated for use, otherwise, it indicates that the hot pot is abnormal in water inlet and needs to be stopped for overheating protection to avoid accidents such as dry burning and fire, and further, a water shortage alarm can be sent, for example, in a sound and light combined manner, to remind a user to confirm and solve the problem in time.
According to an embodiment of the present invention, the controlling the operation state of the water pump according to the first water level detection signal generated by the water level detection assembly specifically includes: when the first water level detection signal indicates that the water level in the hot pot is lower than a first preset water level, the water pump is controlled to start to work through the electric control plate; and when the first water level detection signal indicates that the water level in the hot pot is greater than or equal to the first preset water level, the electric control board controls the water pump to stop working.
In this embodiment, the operation state of the water pump is specifically controlled according to the magnitude relation between the real-time water level in the hot pot and the first preset water level, that is, when the water level is lower than the first preset water level, the water pump is started, otherwise, the water pump is stopped, and the water pump is stopped, so that the water level in the hot pot is maintained in a state of being greater than or equal to the first preset water level through the control of the cyclic reciprocation, so that the steam generator can generate enough steam for ironing, and the ironing effect is improved.
According to an embodiment of the present invention, further comprising: and after the heating element is controlled to stop heating according to the temperature detection signal, controlling the working state of the heating element according to a second water level detection signal generated by the water level detection assembly.
In this embodiment, after the heating element is controlled to stop heating according to the temperature detection signal, which indicates that the water in the hot pot is less and accidents such as dry burning and fire may occur at this time, in order to ensure the safety of the hot pot, it is further determined whether to control the heating element to be turned on again to start working or to continue to keep the heating-stopped state according to the height of the water level in the hot pot.
According to an embodiment of the present invention, the controlling the operating state of the heating element according to the second water level detection signal generated by the water level detection assembly specifically includes: when the second water level detection signal indicates that the water level in the hot pot is higher than a second preset water level, the heating element is controlled to be started to heat through the electric control board; when the second water level detection signal indicates that the water level in the hot pot is less than or equal to the second preset water level, the heating element is controlled by the electric control board to keep stopping heating.
In this embodiment, after the heating element is controlled to stop heating according to the temperature detection signal, whether the heating element is restarted to enter the heating state can be controlled according to the magnitude relation between the water level in the hot pot and a second preset water level, wherein the second preset water level is smaller than the first preset water level, and specifically, if the second preset water level is higher than the second preset water level, the heating element can be recovered to continue heating, that is, it is said that the abnormal situation of water inlet of the hot pot is effectively solved, further, if the water shortage alarm is sent out before, the alarm can be stopped at this time, otherwise, the heating state is kept, and further, the water shortage alarm can be sent out continuously.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 illustrates a perspective view of a steam generator according to an embodiment of the present invention;
FIG. 2 is a perspective view illustrating a hot pot and a water level sensing assembly in the steam generator shown in FIG. 1;
FIG. 3 is a schematic bottom view of the hot pot of FIG. 2;
FIG. 4 is a schematic sectional view of the water level inside the hot pot shown in FIG. 2 rising to a first preset water level H1;
FIG. 5 is a schematic sectional view of the water level inside the hot pot shown in FIG. 2 dropping to a second preset water level H2;
FIG. 6 is a schematic sectional view illustrating a water level sensing assembly according to an embodiment of the present invention;
fig. 7 is a flowchart illustrating a control method of a steam generator according to a first embodiment of the present invention;
fig. 8 is a flowchart illustrating a control method of a steam generator according to a second embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 6 is:
10 hot pot, 101 hot pot water inlet, 102 hot pot steam outlet, 103 heating element, 104 threaded hole, 105 water outlet, 106 drain valve, 20 water tank, 30 water pump, 40 water level detection component, 401 magnetic floating ball, 402 sliding rod, 4021 boss, 4022 external thread, 4023 hollow cavity, 4024 first blocking rib, 4025 second blocking rib, 403 magnetic sensitive switch, 50 temperature detection element, 60 electric control board, 70 connecting pipe, 80 water line and 90 steam outlet pipe.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
A steam generator and a garment steamer according to some embodiments of the present invention will be described with reference to fig. 1 to 7.
As shown in fig. 1, there is provided a steam generator according to an embodiment of the present invention, including: the water boiler comprises a hot pot 10, a water tank 20, a water pump 30, a water level detection assembly 40, a temperature detection element 50 and an electric control board 60.
Wherein, the hot pot 10 is provided with a hot pot water inlet 101 and a hot pot steam outlet 102, and the bottom of the hot pot 10 is provided with a heating element 103 for heating the water in the hot pot 10; the water tank 20 is provided with a water tank water outlet which is communicated with the hot pot water inlet 101 through a connecting pipe 70 and stores the make-up water of the hot pot 10; the water pump 30 is arranged on the connecting pipe 70 and pumps the water in the water tank 20 into the hot pot 10; a water level detecting assembly 40 disposed in the hot pot 10, detecting a height change of a water level in the hot pot 10, and generating a water level detecting signal; a temperature detecting element 50 which is arranged at the bottom of the hot pot 10, detects the temperature change of the bottom of the hot pot 10 and generates a temperature detecting signal; and an electric control board 60 electrically connected to the water pump 30, the water level detection assembly 40 and the temperature detection member 50, respectively, for controlling the operation state of the heating member 103 according to the temperature detection signal in the process of controlling the operation state of the water pump 30 according to the received first water level detection signal.
In the steam generator provided by the above embodiment of the present invention, in the process of controlling the operating state of the water pump 30 according to the change of the water level height detected by the water level detecting assembly 40 installed in the hot pot 10, that is, in the process of controlling the water pump 30 to start and automatically pump water into the hot pot 10 or stop pumping water according to the change of the water level height in the hot pot 10, the temperature detecting element 50 installed at the bottom of the hot pot 10 is used to effectively detect the change of the temperature of the position where the water pump is located, so as to control the operating state of the heating element 103, that is, the temperature change condition at the bottom of the hot pot 10 is detected to determine whether the water inlet of the hot pot 10 is normal or not, so as to avoid the situation that the water inlet 101 of the hot pot is blocked by the scale, so that the proper amount of water is kept in the hot pot 10 by performing the double control, thereby effectively avoiding the accidents such as excessive water spraying, too little water amount of water in, effectively ensures the stability and the dryness of the steam, improves the ironing effect, prolongs the service life of the hot pot 10, and ensures the use safety and the use feeling of users.
As shown in fig. 2 and 3, the bottom of the hot pot 10 is provided with a temperature detecting element 50 and a heating element 103, wherein the heating element 103 is welded, screwed or pressure-riveted on the hot pot 10, or the heating element 103 and the hot pot 10 are integrally formed by die-casting.
According to one embodiment of the present invention, the electronic control board 60 is further configured to: after controlling the heating element 103 to stop heating according to the temperature detection signal, the operating state of the heating element 103 is controlled according to the received second water level detection signal.
In this embodiment, in the process of controlling the operation state of the water pump 30 according to the change of the water level height detected by the water level detecting assembly 40 installed in the hot pot 10, after the electric control board 60 controls the heating element 103 to stop heating according to the temperature detection signal generated by the change of the temperature of the bottom of the hot pot 10, which indicates that the water amount in the hot pot 10 is small and the accident such as dry burning and fire may occur, in order to ensure the safety of the use of the hot pot 10, it is further determined whether to control the heating element 103 to be turned on again or to continue to maintain the heating stop state according to the water level height in the hot pot 10.
According to an embodiment of the present invention, when the first water level detection signal indicates that the water level in the hot pot 10 is less than the first preset water level, the electronic control board 60 controls the water pump 30 to start, and when the first water level detection signal indicates that the water level in the hot pot 10 is greater than or equal to the first preset water level, the electronic control board 60 controls the water pump 30 to stop; when the temperature detection signal indicates that the temperature change rate of the bottom of the hot pot 10 is greater than or equal to the preset change rate, the electric control board 60 controls the heating element 103 to stop heating, and when the temperature detection signal indicates that the temperature change rate is less than the preset change rate, the electric control board 60 controls the heating element 103 to keep heating; when the second water level detection signal indicates that the water level in the hot pot 10 is higher than the second preset water level, the electric control board 60 controls the heating element 103 to start heating, and when the second water level detection signal indicates that the water level in the hot pot 10 is lower than or equal to the second preset water level, the electric control board 60 controls the heating element 103 to stop heating, wherein the second preset water level is lower than the first preset water level.
In this embodiment, the electric control board 60 controls the operating state of the water pump 30 according to the magnitude relationship between the real-time water level in the hot pot 10 and the first preset water level, specifically, when the real-time water level in the hot pot 10 is lower than the first preset water level, the water pump 30 is started to pump water, otherwise, the water pump 30 is turned off to stop pumping water, and the water level in the hot pot 10 is maintained in a state of being greater than or equal to the first preset water level through the cyclic reciprocating control, so that the steam generator can generate enough steam to iron, and the ironing protection effect is improved; furthermore, in the above process, the operating state of the heating element 103 is controlled according to the relation between the real-time temperature change rate of the bottom of the hot pot 10 and the preset change rate, if the temperature change rate is smaller than the preset change rate, it indicates that the hot pot 10 in the above process is normal in water inlet, the water amount in the hot pot 10 is maintained at the proper water amount, and the heating operation can be continued, otherwise, it indicates that the hot pot 10 is abnormal in water inlet and needs to stop heating, so as to perform overheat protection and avoid accidents such as dry burning and fire, further, a water shortage alarm can be sent out, for example, in a way of combining sound and light, so as to remind the user to confirm and solve the problem in time, and then after the heating operation is stopped, the operating state of the heating element 103 is controlled according to the relation between the water level in the hot pot 10 and a second preset water level, i.e. whether the water level is heated again, wherein the second preset water level is smaller than the first preset water level, and specifically, if the second preset water level is higher, the abnormal situation of water inlet of the hot pot 10 is effectively solved, and the alarm can be stopped at the moment if the alarm for water shortage sent out before, otherwise, the heating stop state is kept, and the alarm for water shortage can be further sent out continuously.
The first predetermined water level in the above embodiment is shown as the height H1 of the water level line 80 shown in fig. 4, and the second predetermined water level is shown as the height H2 of the water level line 80 shown in fig. 5.
According to one embodiment of the present invention, the temperature sensing element 50 is an NTC temperature sensing element.
In this embodiment, it is preferable that the NTC (Negative Temperature Coefficient) Temperature measuring element detects a change in Temperature of the bottom of the hot pot, that is, a Temperature change rate is determined according to a resistance change rate of the NTC Temperature measuring element, and then the power supply control board 60 determines whether the hot pot is normal to supply water, so as to protect the hot pot.
According to an embodiment of the present invention, as shown in fig. 4, 5 and 6, the water level detecting assembly 40 includes a magnetic floating ball 401 disposed in the hot pot 10, a sliding rod 402 limiting a movement track of the magnetic floating ball 401, and a magnetic sensitive switch 403 disposed in the sliding rod 402 and electrically connected to the electric control board 60, wherein the magnetic sensitive switch 403 and the magnetic floating ball 401 cooperate to sense a height change of a water level in the hot pot.
In the embodiment, the magnetic floating ball 401 floats up and down along with the water level in the hot pot to change the magnetic force of the magnetic floating ball 401 on the magnetic sensitive switch 403, so that the on-off of the magnetic sensitive switch 403 is controlled; and the electric control board 60 electrically connected with the magnetic sensitive switch 403 and the water pump 30 respectively is used for controlling the start and stop of the water pump 30, specifically, after the electric control board 60 receives the off signal (or the on signal) of the magnetic sensitive switch 403, the water pump 30 can be controlled to start pumping water, and after the electric control board 60 receives the on signal (or the off signal) of the magnetic sensitive switch 403, the water pump 30 can be controlled to stop pumping water, and the operation is repeated in such a cycle.
In one embodiment of the present invention, as shown in fig. 4 and 5, the lower end of the sliding rod 402 extends into the hot pot 10, and the upper end of the sliding rod 402 is detachably connected to the hot pot 10.
Preferably, as shown in fig. 6, the upper end of the sliding rod 402 is provided with a boss 4021 protruding outwards along the circumferential direction thereof, the boss 4021 is provided with an external thread 4022, and as shown in fig. 4 and 5, the top of the hot pot 10 is provided with a threaded hole 104 matched with the external thread 4022, so as to detachably mount the sliding rod 402 on the hot pot 10.
The upper end part of the sliding rod 402 is detachably connected with the hot pot 10, so that the sliding rod 402, the magnetic floating ball 401 arranged on the sliding rod 402 and the magnetic sensitive switch 403 can be conveniently taken down for maintenance and replacement; preferably, the upper end of the sliding rod 402 is connected with the hot pot 10 by screw threads, which not only ensures the reliability of the connection between the two, but also facilitates the removal of the sliding rod 402 for maintenance and replacement, and of course, other connection methods such as clamping connection can be used between the sliding rod 402 and the hot pot 10.
In one embodiment of the present invention, as shown in fig. 4, 5 and 6, the magnetic floating ball 401 is slidably mounted on the sliding rod 402 up and down, the sliding rod 402 has a hollow cavity 4023 with an opening at the upper end, and the magnetic sensitive switch 403 is located in the hollow cavity 4023.
Specifically, as shown in fig. 4, the wavy line in the figure indicates the water level line 80, when the water level in the hot pot 10 rises to be higher than the first preset water level H1, the magnetic floating ball 401 moves the magnetic floating ball 401 upward to be close to the magnetic sensitive switch 403 and enhance the magnetic action on the magnetic sensitive switch 403, the magnetic sensitive switch 403 is turned on under the magnetic action of the magnetic floating ball 401, and the electric control board 50 controls the water pump 30 to stop pumping water after receiving the turn-on signal of the magnetic sensitive switch 403; and if the water level in the hot pot 10 is lowered to be lower than the first preset water level H1, the magnetic floating ball 401 moves downwards to be away from the magnetic sensitive switch 403 and the magnetic action on the magnetic sensitive switch 403 disappears gradually, the magnetic sensitive switch 403 is switched off, and the electric control board 50 controls the water pump 30 to start pumping water after receiving the switching-off signal of the magnetic sensitive switch 403, so that the switching-on and switching-off of the magnetic sensitive switch 403 are controlled effectively by the up-and-down floating of the magnetic floating ball 401, the structure is simple, and the control precision is high.
It should be noted that the magnetic floating ball 401 is a high temperature resistant magnetic floating ball 401, the height control of the water level can be realized by adjusting the position of the magnetic sensitive switch 403, and the magnetic sensitive switch 403 can be a magnetic sensitive switch 403 such as a reed switch, a hall switch, a capacitive proximity switch, and the like.
Further, as shown in fig. 4 and 5, a first rib 4024 for limiting the upward movement of the magnetic floating ball 401 and a second rib 4025 for limiting the downward movement of the magnetic floating ball 401 are disposed on an outer side wall of the sliding rod 402, so that the magnetic floating ball 401 slides up and down between the first rib 4024 and the second rib 4025 to prevent the magnetic floating ball 401 from coming off the sliding rod 402, thereby ensuring the reliability of the movement of the magnetic floating ball 401 and ensuring the accuracy of detecting the water level by the up-and-down floating of the magnetic floating ball 401.
Still further, an inward recessed limiting groove may be formed in the outer side wall of the sliding rod 402, and the second retaining rib 4025 is detachably installed in the limiting groove, so that the magnetic floating ball 401 is sleeved on the sliding rod 402 from bottom to top, which is convenient for detachment and installation of the magnetic floating ball 401.
In one embodiment of the present invention, as shown in fig. 1 and 2, the hot pot 10 is provided with a water outlet 105 for discharging scale and water stored in the hot pot 10, and a water discharge valve 106 for controlling the opening and closing of the water outlet 105 is installed at the water outlet 105, so that the scale and water stored in the hot pot 10 can be smoothly discharged.
In an embodiment of the present invention, an electromagnetic valve (not shown in the figure) for controlling the opening and closing and the opening degree of the hot pot steam outlet 102 is disposed at the hot pot steam outlet 102, so as to control the opening and closing or the opening degree of the hot pot steam outlet 102 through the electromagnetic valve, thereby achieving the purpose of forming a certain air pressure in the hot pot 10.
An embodiment of another aspect of the invention provides a garment steamer comprising: the steam generator and the steam nozzle (not shown) according to any of the above embodiments are connected to the hot pot steam outlet 102 of the steam generating device through the steam outlet pipe 90.
In the garment steamer provided by the above embodiment of the invention, the steam outlet 102 of the hot pot of the steam generator is communicated with the steam nozzle through the steam outlet pipe 90, so that the heating element 103 heats and evaporates water in the hot pot 10 to form steam, and the steam is input into the steam outlet pipe 90 through the steam outlet 102 of the hot pot and is sprayed out by the steam nozzle, thereby realizing the ironing function; along with the evaporation of water in the hot pot 10, when the water level in the hot pot 10 is lowered to be lower than a first preset water level H1, the magnetic action of the magnetic floating ball 401 on the magnetic sensitive switch 403 disappears, the magnetic sensitive switch 403 is switched off, the water pump 30 is controlled to start pumping water into the hot pot 10, when the water level in the hot pot 10 is raised to be higher than the first preset water level H1, the magnetic sensitive switch 403 is closed again under the magnetic action of the magnetic floating ball 401, the water pump 30 is controlled to stop pumping water into the hot pot 10, and along with the evaporation of the water in the hot pot 10, the period is continuously circulated, so that the water level in the hot pot 10 is maintained at a proper water amount, the abnormalities such as dry burning caused by too much water and too little water in the hot pot 10 are avoided, the stability and the dryness of steam are ensured, the ironing effect is improved, and the service life of the boiler is prolonged; in the process of the circulating water pumping, whether the temperature change rate of the bottom of the hot pot 10 is greater than the preset change rate is detected by the temperature detection element 50 to judge whether the water inlet of the hot pot 10 is normal or not, if the temperature change rate is greater than the preset change rate, the water inlet of the hot pot 10 is abnormal, the situation that the water inlet 101 of the hot pot is blocked by water scale possibly occurs, the heating element 103 needs to be controlled to stop heating, and a water shortage alarm is sent out, so that the problems can be solved by opening a drain valve to discharge, and when the water level in the hot pot 10 rises to a second preset water level H2, the alarm can be stopped, and the heating element 103 is restarted to heat; the garment steamer also has other beneficial effects of the steam generating device of any one of the above embodiments, which are not described herein again.
It should be noted that the steam generator described above can be applied to other household appliances having a steam generator besides a garment steamer, and is within the scope of the present invention as long as the steam generator does not depart from the spirit of the present invention.
Fig. 7 shows a flowchart illustrating a control method of the steam generator according to the first embodiment of the present invention.
As shown in fig. 7, the control method of the steam generator according to the first embodiment of the present invention is applied to the steam generator according to any one of the above embodiments, and specifically includes the following steps:
And 706, controlling the working state of the heating element according to the temperature detection signal.
In the control method of the steam generator provided by the above embodiment of the invention, when the heating element of the steam generator is started to be in a heating working state, the working state of the water pump is controlled through the height change of the water level in the hot pot detected by the water level detection component, namely, the water pump is controlled to be started to automatically pump water into the hot pot or stop pumping water according to the height change of the water level in the hot pot, and in the process, the working state of the heating element is further controlled through the temperature change of the bottom of the hot pot detected by the temperature detection component, namely, whether the water inlet of the hot pot is normal or not is judged through detecting the temperature change condition of the bottom of the hot pot, so that the situation that the normal water pumping cannot be realized due to the blockage of the water inlet by the scale is avoided, and therefore, the proper water quantity is kept in the hot pot through double control, the accidents of excessive water spraying, insufficient water drying or, effectively guarantee the stationarity and the aridity of steam, promoted ironing effect, prolonged the life of hot pot to the security of using and user's use impression have been guaranteed.
Further, in the foregoing embodiment, step 706 specifically includes:
when the temperature detection signal indicates that the temperature change rate of the bottom of the hot pot is greater than or equal to a preset change rate, the heating element is controlled to stop heating through the electric control board; when the temperature detection signal indicates that the temperature change rate is smaller than the preset change rate, the heating element is controlled by the electric control board to keep heating.
In this embodiment, the operating state of the heating element is specifically controlled according to the magnitude relation between the real-time temperature change rate of the bottom of the hot pot and the preset change rate, if the temperature change rate is smaller than the preset change rate, it indicates that the hot pot is normal in water inlet in the process, the water amount in the hot pot is maintained at a proper water amount, and the hot pot can be continuously heated for use, otherwise, it indicates that the hot pot is abnormal in water inlet and needs to be stopped for overheating protection to avoid accidents such as dry burning and fire, and further, a water shortage alarm can be sent, for example, in a sound and light combined manner, to remind a user to confirm and solve the problem in time.
Further, in any of the above embodiments, the step 704 specifically includes:
when the first water level detection signal indicates that the water level in the hot pot is lower than a first preset water level, the water pump is controlled to start to work through the electric control plate; and when the first water level detection signal indicates that the water level in the hot pot is greater than or equal to the first preset water level, the electric control board controls the water pump to stop working.
In this embodiment, the operation state of the water pump is specifically controlled according to the magnitude relation between the real-time water level in the hot pot and the first preset water level, that is, when the water level is lower than the first preset water level, the water pump is started, otherwise, the water pump is stopped, and the water pump is stopped, so that the water level in the hot pot is maintained in a state of being greater than or equal to the first preset water level through the control of the cyclic reciprocation, so that the steam generator can generate enough steam for ironing, and the ironing effect is improved.
Further, in any of the above embodiments, the control method further includes: and after the heating element is controlled to stop heating according to the temperature detection signal, controlling the working state of the heating element according to a second water level detection signal generated by the water level detection assembly.
In this embodiment, after the heating element is controlled to stop heating according to the temperature detection signal, which indicates that the water in the hot pot is less and accidents such as dry burning and fire may occur at this time, in order to ensure the safety of the hot pot, it is further determined whether to control the heating element to be turned on again to start working or to continue to keep the heating-stopped state according to the height of the water level in the hot pot.
Further, the controlling the operating state of the heating element according to the second water level detection signal generated by the water level detection assembly specifically includes: when the second water level detection signal indicates that the water level in the hot pot is higher than a second preset water level, the heating element is controlled to be started to heat through the electric control board; when the second water level detection signal indicates that the water level in the hot pot is less than or equal to the second preset water level, the heating element is controlled by the electric control board to keep stopping heating.
In this embodiment, after the heating element is controlled to stop heating according to the temperature detection signal, whether the heating element is restarted to enter the heating state can be controlled according to the magnitude relation between the water level in the hot pot and a second preset water level, wherein the second preset water level is smaller than the first preset water level, and specifically, if the second preset water level is higher than the second preset water level, the heating element can be recovered to continue heating, that is, it is said that the abnormal situation of water inlet of the hot pot is effectively solved, further, if the water shortage alarm is sent out before, the alarm can be stopped at this time, otherwise, the heating state is kept, and further, the water shortage alarm can be sent out continuously.
Fig. 8 is a flowchart illustrating a control method of a steam generator according to a second embodiment of the present invention.
As shown in fig. 8, the control method of the steam generator according to the second embodiment of the present invention specifically includes the following process steps:
The technical scheme of the invention is explained in detail by combining the attached drawings, the proper water quantity is kept in the hot pot by carrying out double control on the water level and the temperature, accidents such as excessive water spraying, insufficient water drying or fire firing and the like in the hot pot are effectively avoided, the stability and the dryness of steam are effectively ensured, the ironing effect is improved, the service life of the hot pot is prolonged, and the use safety and the use feeling of a user are ensured.
In the description of the present invention, unless otherwise specified or indicated, the terms "connected," "mounted," and the like are to be construed broadly, e.g., "connected" may be a fixed connection, a removable connection, an integral connection, or an electrical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A steam generator, comprising:
the bottom of the hot pot is provided with a heating element for heating water in the hot pot;
the water tank is communicated with the hot pot and stores the make-up water of the hot pot;
the water pump is arranged on a pipeline communicated with the hot pot and the water tank and pumps water in the water tank into the hot pot;
the water level detection assembly is arranged in the hot pot, detects the height change of the water level in the hot pot and generates a water level detection signal;
the temperature detection element is arranged at the bottom of the hot pot, detects the temperature change of the bottom of the hot pot and generates a temperature detection signal;
the electric control board is respectively electrically connected with the water pump, the water level detection assembly and the temperature detection element, and controls the working state of the heating element according to the temperature detection signal in the process of controlling the working state of the water pump according to the received first water level detection signal;
the temperature change of the position of the temperature detection element is effectively detected through the temperature detection element arranged at the bottom of the hot pot so as to control the working state of the heating element, namely whether the water inlet of the hot pot is normal is judged through detecting the temperature change condition of the bottom of the hot pot;
after the heating element is controlled to stop heating according to the temperature detection signal, controlling the working state of the heating element according to a received second water level detection signal;
when the first water level detection signal indicates that the water level in the hot pot is lower than a first preset water level, the electric control board controls the water pump to start to work, and when the first water level detection signal indicates that the water level in the hot pot is higher than or equal to the first preset water level, the electric control board controls the water pump to stop working;
when the second water level detection signal indicates that the water level in the hot pot is higher than a second preset water level, the electric control board controls the heating element to start heating, and when the second water level detection signal indicates that the water level in the hot pot is lower than or equal to the second preset water level, the electric control board controls the heating element to keep stopping heating, wherein the second preset water level is lower than the first preset water level;
when the temperature detection signal indicates that the temperature change rate of the bottom of the hot pot is greater than or equal to a preset change rate, the electric control board controls the heating element to stop heating, and when the temperature detection signal indicates that the temperature change rate is smaller than the preset change rate, the electric control board controls the heating element to keep heating.
2. The steam generator of claim 1, wherein the temperature sensing element is an NTC temperature sensing element.
3. The steam generator as claimed in claim 1, wherein the water level detecting assembly comprises a magnetic floating ball disposed in the hot pan, a sliding rod for limiting a movement track of the magnetic floating ball, and a magnetic sensitive switch disposed in the sliding rod and electrically connected to the electric control board, wherein the magnetic sensitive switch and the magnetic floating ball cooperate to sense a height change of a water level in the hot pan.
4. A garment steamer, comprising:
a steam generator according to any one of claims 1 to 3; and
and the steam nozzle is communicated with the steam outlet of the hot pot through a steam outlet pipe.
5. A control method of a steam generator, for the steam generator according to any one of claims 1 to 3, the control method comprising:
after the heating element is started to heat water in the hot pot, detecting the height change of the water level in the hot pot through the water level detection assembly and generating a water level detection signal;
in the process of controlling the working state of the water pump according to a first water level detection signal generated by the water level detection assembly, detecting the temperature change of the bottom of the hot pot through the temperature detection element and generating a temperature detection signal;
controlling the working state of the heating element according to the temperature detection signal; when the first water level detection signal indicates that the water level in the hot pot is lower than a first preset water level, the water pump is controlled to start to work through the electric control plate;
when the first water level detection signal indicates that the water level in the hot pot is greater than or equal to the first preset water level, the electric control board controls the water pump to stop working;
after the heating element is controlled to stop heating according to the temperature detection signal, the working state of the heating element is controlled according to a second water level detection signal generated by the water level detection assembly;
when the second water level detection signal indicates that the water level in the hot pot is higher than a second preset water level, the heating element is controlled to be started to heat through the electric control board;
when the second water level detection signal indicates that the water level in the hot pot is less than or equal to the second preset water level, the heating element is controlled to stop heating through the electric control board;
controlling the working state of the heating element according to the temperature detection signal, specifically comprising:
when the temperature detection signal indicates that the temperature change rate of the bottom of the hot pot is greater than or equal to a preset change rate, the heating element is controlled to stop heating through the electric control board;
when the temperature detection signal indicates that the temperature change rate is smaller than the preset change rate, the heating element is controlled by the electric control board to keep heating;
the temperature detecting element arranged at the bottom of the hot pot effectively detects the temperature change of the position of the temperature detecting element so as to control the working state of the heating element, namely, whether the water inlet of the hot pot is normal is judged by detecting the temperature change condition of the bottom of the hot pot.
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| CN201610881916.1A CN106439765B (en) | 2016-09-30 | 2016-09-30 | Steam generator, garment steamer and control method of steam generator |
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| CN201610881916.1A CN106439765B (en) | 2016-09-30 | 2016-09-30 | Steam generator, garment steamer and control method of steam generator |
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| CN106917222A (en) * | 2017-04-12 | 2017-07-04 | 无锡飞翎电子有限公司 | A kind of washing machine |
| CN109708084A (en) * | 2017-10-25 | 2019-05-03 | 宁波方太厨具有限公司 | Steam generator |
| CN112618001B (en) * | 2019-12-31 | 2022-09-27 | 杭州堃博生物科技有限公司 | Steam ablation equipment and preheating control method, controller, equipment and medium thereof |
| CN113124388B (en) * | 2019-12-31 | 2022-09-20 | 莱克电气绿能科技(苏州)有限公司 | Steam outlet method of steam generator, steam generator and steam ironing machine |
| CN111365701A (en) * | 2020-03-19 | 2020-07-03 | 杭州老板电器股份有限公司 | Steam generator, water level control method thereof and steam cooking device |
| CN114515105B (en) * | 2020-11-19 | 2023-06-30 | 广东美的生活电器制造有限公司 | Cooking appliance, control method and control device for preventing pump from being pumped dry and storage medium |
| CN114568924B (en) * | 2020-11-30 | 2023-06-09 | 广东美的环境电器制造有限公司 | Steam generating device, control method, control device and household appliance |
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