CN108592002B - Cooking appliance, steam generator and descaling control method and device of steam generator - Google Patents
Cooking appliance, steam generator and descaling control method and device of steam generator Download PDFInfo
- Publication number
- CN108592002B CN108592002B CN201810404486.3A CN201810404486A CN108592002B CN 108592002 B CN108592002 B CN 108592002B CN 201810404486 A CN201810404486 A CN 201810404486A CN 108592002 B CN108592002 B CN 108592002B
- Authority
- CN
- China
- Prior art keywords
- steam generator
- preset
- water
- descaling
- drain valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/54—De-sludging or blow-down devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/56—Boiler cleaning control devices, e.g. for ascertaining proper duration of boiler blow-down
Abstract
The invention provides a cooking appliance, a steam generator and a descaling control method and device thereof, wherein the steam generator comprises a drain valve which is arranged corresponding to a drain outlet of the steam generator, and the method comprises the following steps: s1, supplying a preset amount of water to the steam generator; s2, controlling the drain valve to be opened for a first preset time, and controlling the steam generator to heat at a preset maximum power so as to enable the steam generator to enter a dry-burning state; s3, when the temperature of the inner cavity of the steam generator reaches a first preset temperature, controlling the steam generator to stop heating to finish a cold and hot impact cycle; the above steps S1-S3 are repeatedly performed until the number of times of completing the cold-hot impact cycle reaches a preset number of times. The method makes the scale adhered to the inner cavity of the steam generator fall off by a cold and hot impact method, and discharges the fallen scale from the water outlet without a scale remover, thereby saving time, improving the convenience of scale removal and being simple and easy to realize.
Description
Technical Field
The invention relates to the technical field of electric appliances, in particular to a descaling control method of a steam generator, a descaling control device of the steam generator, the steam generator and a cooking electric appliance.
Background
With the development of human material culture, steam can be used for heating, cleaning, sterilizing, etc. in addition to the early use as power, thereby making the application of the steam generator more and more extensive.
From the structural point of view, steam generators can be broadly divided into two main categories: one type is a boiler type generator, which generally has a larger space for containing water to boil, such as a steam boiler, a bottom heating plate of a steamer and the like; another type is a flow path spray type generator, characterized by built-in flow paths for superheating steam, which can generate steam of different superheating levels, which has been widely used in steam cooking products, such as coffee machines, partial steamers or steam cleaners, etc.
However, in any type of steam generator, scale generation is inevitable when a non-purified water source is used. When the steam generator generates scale in the using process and accumulates to a certain degree, the heat efficiency of the steam generator is seriously reduced, particularly for a flow channel type spray generator, the flow channel can be blocked by the scale, so that the steam generator can not work normally, and the product loses the using significance. In order to ensure the normal use of the generator, manufacturers of most of these products may require the user to perform a descaling operation regularly on the specification.
At present, the mainstream method for descaling a steam generator is to perform a descaling operation by using a descaling agent (such as an acidic substance like citric acid or acetic acid). The method is characterized in that a solution with certain acidity is prepared, then the solution is heated and soaked in a steam generator for a period of time such as 30 minutes, scale substances are dissolved and then are discharged along with waste liquid, then generally, the solution is continuously soaked for a period of time such as 30 minutes by using clear water, residual liquid is removed, the whole process generally needs about 1 hour, and the consumed time is long.
That is, the above descaling method usually requires users to purchase a descaling agent, prepare a descaling solution, periodically spend a relatively long time waiting for the completion of descaling of the steam generator, and perform final cleaning, so that the product experience is not good.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, a first object of the present invention is to provide a descaling control method for a steam generator, which can remove scale adhered to an inner cavity of the steam generator by a thermal shock method and discharge the removed scale from a drain pipe without using a descaling agent, thereby saving time, improving convenience of descaling, and being simple and easy to implement.
A second object of the invention is to propose a non-transitory computer-readable storage medium.
A third object of the present invention is to provide a descaling control device for a steam generator.
A fourth object of the present invention is to provide a steam generator.
A fifth object of the present invention is to propose an electric cooking appliance.
In order to achieve the above object, a descaling control method for a steam generator according to an embodiment of a first aspect of the present invention includes: s1, supplying a preset amount of water to the steam generator; s2, controlling the drain valve to be opened for a first preset time, and controlling the steam generator to perform heating work at a preset maximum power so as to enable the steam generator to enter a dry-burning state; s3, when the temperature of the inner cavity of the steam generator reaches a first preset temperature, controlling the steam generator to stop heating to finish a cold and hot impact cycle; the above steps S1-S3 are repeatedly performed until the number of times of completing the cold-hot impact cycle reaches a preset number of times.
According to the descaling control method of the steam generator, the preset water quantity is supplied to the steam generator, the drain valve is controlled to be opened for the first preset time, the steam generator is further controlled to perform heating work at the preset maximum power, so that the steam generator enters a dry burning state, and when the temperature of the inner cavity of the steam generator reaches the first preset temperature, the steam generator is controlled to stop heating work, so that a cold and hot impact cycle is completed; and repeating the steps until the number of times of completing the cold-hot impact cycle reaches the preset number. The control method enables the scale adhered to the inner cavity of the steam generator to fall off by a cold and hot impact method, and discharges the fallen scale from the water outlet without a scale remover, thereby saving time, improving the convenience of scale removal, and being simple and easy to realize.
According to some embodiments of the present invention, between the step S1 and the step S2 in the first hot and cold impact cycle, the steam generator is further controlled to perform a heating operation to heat water in the steam generator to a second preset temperature and to maintain the water at the second preset temperature for a second preset time, wherein the second preset temperature is lower than the first preset temperature.
According to some embodiments of the invention, the first preset time is calculated according to the preset water amount and the flow rate of the drain valve, wherein the drain valve is opened for the first preset time, and the water discharge amount H ═ k × H0, wherein k is 3/4-9/10, and H0 is the preset water amount.
According to some embodiments of the invention, the steam generator is a boiler type steam generator or a flow channel type steam generator.
According to some embodiments of the invention, when the steam generator is a flow channel steam generator, the water inlet and the water outlet of the steam generator are realized by a tee pipe.
To achieve the above object, a second aspect of the present invention provides a non-transitory computer readable storage medium, which when executed by a processor, implements the above descaling control method for a steam generator.
According to the non-transitory computer readable storage medium of an embodiment of the present invention, when a program stored thereon corresponding to the above-described descaling control method of the steam generator is executed, it is possible to peel off scale adhered to an inner cavity of the steam generator by a cold and hot impact method and discharge the peeled scale from a drain outlet without a descaling agent, thereby saving time and improving convenience of descaling.
In order to achieve the above object, a third aspect of the present invention provides a descaling control device for a steam generator, the device comprising: a water pump for supplying water to the steam generator; the drain valve is arranged corresponding to a water outlet of the steam generator; heating a tube; the temperature sensor is arranged corresponding to the inner cavity of the steam generator; the controller, the controller respectively with the water pump, the drain valve, the heating pipe with temperature sensor links to each other, the controller is used for carrying out following step in proper order: s1, controlling the water pump to supply a preset water amount to the steam generator; s2, controlling the drain valve to be opened for a first preset time, and controlling the heating pipe to perform heating work at a preset maximum power so that the steam generator enters a dry-burning state; s3, when the temperature of the inner cavity of the steam generator reaches a first preset temperature, controlling the steam generator to stop heating to finish a cold and hot impact cycle; wherein the controller repeatedly performs the above steps S1-S3 until the number of times of completing the cold-hot impact cycle reaches a preset number of times.
According to the descaling control device of the steam generator, the controller controls the water pump to supply the preset water quantity to the steam generator, controls the drain valve to be opened for the first preset time, further controls the heating pipe to perform heating operation at the preset maximum power so as to enable the steam generator to enter a dry burning state, and controls the steam generator to stop heating operation when the temperature of the inner cavity of the steam generator reaches the first preset temperature so as to complete a cold and hot impact cycle; and repeatedly executing the steps by the controller until the number of times of finishing the cold and hot impact cycle reaches the preset number. The control device enables the scale adhered to the inner cavity of the steam generator to fall off by a cold and hot impact method, and discharges the fallen scale from the water outlet without a scale remover, thereby saving time, improving the convenience of scale removal, and being simple and easy to realize.
According to some embodiments of the invention, the controller is further configured to: in a first hot and cold impact cycle, after the step S1 is executed and before the step S2 is executed, the heating pipe is controlled to operate to heat the steam generator to a second preset temperature and maintain the second preset temperature for a second preset time, wherein the second preset temperature is lower than the first preset temperature.
According to some embodiments of the invention, the first preset time is calculated according to the preset water amount and the flow rate of the drain valve, wherein the drain valve is opened for the first preset time, and the water discharge amount H ═ k × H0, wherein k is 3/4-9/10, and H0 is the preset water amount.
According to some embodiments of the invention, the steam generator is a boiler type steam generator or a flow channel type steam generator.
According to some embodiments of the invention, when the steam generator is a flow channel steam generator, the water inlet and the water outlet of the steam generator are realized by a tee pipe.
According to some embodiments of the invention, the heating tube is a stainless steel heating tube or an electrothermal film heating tube.
In order to achieve the above object, a fourth aspect of the present invention provides a steam generator including the above descaling control device.
According to the steam generator provided by the embodiment of the invention, the scale adhered to the inner cavity of the steam generator is removed through the scale removal control device of the steam generator, and the removed scale is discharged from the water outlet, so that no scale remover is needed, the time is saved, the scale removal convenience is improved, and the scale removal control device is simple and easy to implement.
In order to achieve the above object, a fifth embodiment of the invention provides a cooking appliance, which includes the above steam generator.
According to the cooking appliance, the steam generator is adopted, and the descaling control device of the steam generator can be used for enabling the scale adhered to the inner cavity of the steam generator to fall off and discharging the fallen scale from the water outlet, so that a descaling agent is not needed, the time is saved, the descaling convenience is improved, and the descaling control device is simple and easy to implement.
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 foregoing 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 is a flowchart of a descaling control method of a steam generator according to an embodiment of the present invention;
FIG. 2 is a flowchart of a descaling control method of a steam generator according to an embodiment of the present invention;
FIG. 3 is a block diagram illustrating a descaling control apparatus for a steam generator according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a steam generator according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a descaling control device based on the steam generator of FIG. 4; and
fig. 6 is a schematic structural view of a steam generator according to another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
First, the basic principle of descaling of a steam generator of an embodiment of the present invention is briefly explained:
generally, the volume of a substance changes with the increase of the temperature of the substance, and most substances follow the rule of expansion with heat and contraction with cold, and particularly, the expansion coefficient is used for representation.
Specifically, it can be found from the material characteristics table that the thermal expansion coefficient of stainless steel is about (15 to 20). times.10-6At 23-230 x 10℃, the coefficient of thermal expansion of aluminum-6The coefficient of thermal expansion of common scale (such as calcium carbonate) is (11-215) × 10-6/° c (typical values are 11.7 × 10)-6/° c). As can be seen from the above data, the thermal expansion coefficients of each substance are different, and in the case of the steam generator, when the temperature of the steam generator rises, the different substances expand to different degrees as the temperature rises due to the different thermal expansion coefficients of each substance. Therefore, when two are usedWhen substances with different expansion degrees are adhered together, the substances can generate corresponding adhesion force in the substances through the conduction of the adhesion force, however, in practical application, after scale lumps are formed, because the internal bonding force of the same substance is larger than the pulling force when different substances are adhered together, so that when different substances are in different expansion states, the scale stains can be preferentially separated from the inner surface of the steam generator. Therefore, in the steam generator, the scale formed in the near future can be effectively removed by a method of realizing cold and hot shock by the cold water supply and the alternate operation of the heating tube.
A descaling control method of a steam generator, a descaling control apparatus of a steam generator, a steam generator and a cooking appliance according to embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is a schematic flow chart illustrating a descaling control method for a steam generator according to an embodiment of the present invention.
In an embodiment of the present invention, the steam generator includes a drain valve disposed corresponding to a drain port of the steam generator.
As shown in fig. 1, the descaling control method of the steam generator includes the steps of:
s1, supplying a preset amount of water to the steam generator.
Specifically, a preset amount of water may be injected into the steam generator by a water supply device such as a water pump to soak the effective heating surface of the steam heater in water, wherein the preset amount of water may be set according to the size of the effective heating surface of the steam generator.
And S2, controlling the drain valve to be opened for a first preset time, and controlling the steam generator to perform heating work at a preset maximum power so as to enable the steam generator to enter a dry-burning state.
According to some embodiments of the present invention, the first predetermined time may be calculated according to a predetermined amount of water and a flow rate of the drain valve, for example, the amount of water discharged when the drain valve is opened for the first predetermined time H ═ t × F ═ k × H0, and t ═ k × H0/F may be calculated, where t is the first predetermined time, F is the flow rate of the drain valve, k may have a value of 3/4 to 9/10, and H0 is the predetermined amount of water.
Specifically, after the drain valve is controlled to be opened for a first preset time, a small amount of water remains in the inner cavity of the steam generator, and at the moment, the heating pipe of the steam generator can be controlled to perform heating operation at a preset maximum power, so that the steam generator enters a dry-burning state.
Wherein, the heating pipe can be but not limited to stainless steel heating pipe, electric heat membrane heating pipe.
Optionally, during the opening of the drain valve, the heating pipe may be in a working state all the time, and the heating power may be set as required, for example, the heating pipe may be heated by half of the maximum heating power, 3/4, or the like; the heating pipe can also be in a stop working state, and the heating pipe is controlled to be opened until the drainage is finished.
And S3, when the temperature of the inner cavity of the steam generator reaches a first preset temperature, controlling the steam generator to stop heating so as to finish a cold and hot impact cycle.
The temperature of the inner cavity of the steam generator can be detected through a temperature sensor arranged in the inner cavity of the steam generator, for example, the temperature sensor is arranged on an arm of the inner cavity of the steam generator, and the temperature sensing element extends into the inner cavity of the steam generator.
In this embodiment, the first predetermined temperature can be obtained experimentally, and can be a value greater than 150 ℃, such as 160 ℃.
It should be noted that after the steam generator enters the dry-burning state, the scale is more likely to fall off as the dry-burning temperature is higher, however, since the dry-burning temperature is limited by the design of the steam generator (for example, the steam generator using the low-melting-point aluminum heating tube and the welding material is difficult to reach the first preset temperature), at this time, the descaling effect of the steam generator under the cold and hot impact can be improved by adding a coating layer with a larger difference between the expansion coefficient and the scale on the surface of the inner cavity of the steam generator.
S4, repeating the above steps S1-S3 until the number of cold and hot impact cycles reaches the preset number.
The preset times can be determined according to the frequency of removing the scale, for example, under the condition that the scale is removed frequently, for example, the scale is removed 3-5 times in one month, and the cycle times are set to be 3-5 times; under the condition that the scale is not frequently removed, for example, the scale is removed once in one month, and the cycle number can be set to 10-15 times.
Specifically, a preset amount of water is first supplied to the steam generator to immerse the effective heating surface of the steam generator in the water; then controlling a drain valve to be opened for a first preset time to drain water in the steam generator for 3/4-9/10, and further controlling the steam generator to perform heating work at a preset maximum power to enable the steam generator to enter a dry-burning state; after the steam generator enters a dry-burning state, the temperature in the steam generator continuously rises, and when the temperature in the inner cavity of the steam generator reaches a first preset temperature, the steam generator is controlled to stop heating, so that one cold and hot impact is completed. And repeatedly executing the steps for many times until the number of times of finishing the cold and hot impact circulation reaches the preset number, and finishing the scale cleaning.
It should be noted that, because the steam generator has a water outlet, scale falling off each cycle can be discharged from the water outlet, and therefore, the cycle time of each cycle of the cold and hot impact can be set to be 30 seconds to 3 minutes, and multiple cycles can be set to ensure complete cleaning. It will be appreciated that the cleaning of the steam generator may be enhanced by means of high frequency clean water scale maintenance.
Therefore, the method can conveniently and quickly remove the water scale in the steam generator without a chemical descaling agent, so that a user can safely and securely use the steam generator, the hardware requirement of the method is low, the processing time is short, and the large-scale mass production application can be realized.
According to some embodiments of the present invention, between the steps S1 and S2 of the first hot and cold shock cycle, the steam generator is further controlled to perform a heating operation to heat water in the steam generator to a second preset temperature and for a second preset time.
Wherein the second preset temperature is lower than the first preset temperature.
Specifically, after a certain amount of water is added into the steam generator, the steam generator can be controlled to heat through the heating pipe, so that when the water temperature in the steam generator reaches a second preset temperature (for example, any value in the range of 60-90 ℃), the heating power of the heating pipe is adjusted, for example, the heating power is reduced, the heating is interrupted, and the water temperature in the steam generator is kept at a constant temperature for a period of time (for example, 1-2 minutes). Therefore, the effective heating surface of the steam heater is soaked in the heated water for a period of time, so that the adhesion force of the scale in the steam generator can be effectively weakened, and the scale removing effect under the cold and hot impact can be further improved. It should be understood that the temperature of the water in the steam generator may also be detected by the temperature sensor described above which detects the temperature of the interior cavity of the steam generator. The second preset time and the second preset temperature can be set by those skilled in the art according to actual conditions, and are not limited specifically herein.
Further, a drain valve of the steam generator is controlled to be opened for a first preset time, soaked sewage is discharged 3/4-9/10, and then a heating pipe of the steam generator is adjusted to the maximum power to heat the remaining small amount of water, so that certain steam can be generated to assist in washing scale which is adhered to the heating surface and is not firm.
According to some embodiments of the present invention, the steam generator may be a boiler type steam generator or a flow channel type steam generator.
When the steam generator is a boiler type steam generator, two ports can be arranged on the steam generator, one port is used as a water inlet of the steam generator and connected with a water supply device, the other port is used as a water outlet of the steam generator, and a drain valve is arranged on the water outlet.
When the steam generator is a flow channel type steam generator, a port is arranged on the steam generator, and then a water inlet and a water outlet of the steam generator can be realized through a three-way pipe. Specifically, the tee includes a first port, a second port, and a third port. The first port is connected with the water supply device and used as a water inlet of the steam generator, the second port is connected with a port of the steam generator, the third port is used as a water outlet of the steam generator, and the drain valve is arranged on the third port. When water is supplied to the steam generator, the drain valve is in a closed state, and when the control drain valve is opened, water in the steam generator can be drained from the drain port.
It should be understood that when the steam generator is a boiler type steam generator, a port may be provided on the steam generator, and thus the water inlet and the water outlet of the steam generator may be implemented by a tee pipe, in a manner similar to the implementation of the flow channel type steam generator described above.
Further, in an embodiment of the present invention, a coating may be disposed on the inner cavity of the steam generator, wherein a difference between an expansion coefficient of the coating and an expansion coefficient of the scale is greater than a preset value, and the preset value may be calibrated as required.
Specifically, after the steam generator enters a dry-burning state, the scale is easy to fall off as the dry-burning temperature is higher, however, due to the limitation of the design of the steam generator, some steam generators (such as the steam generator using an aluminum heating tube with a low melting point and a welding material) are difficult to reach a preset dry-burning temperature (namely, above 150 ℃) after entering the dry-burning state, and at this time, a coating with a large difference between the expansion coefficient and the scale is added on the surface of the inner cavity of the steam generator, so as to improve the descaling effect of the steam generator under the cold and hot impact.
As a specific example of the present invention, as shown in fig. 2, when a scale removing program corresponding to a descaling control method of a steam generator according to a real example of the present invention is executed, the following steps are performed:
s201, controlling a water supply device to inject preset water into the generator, and enabling an effective heating surface in the steam generator to be soaked in the water as much as possible.
S202, controlling the heating pipe of the steam generator to work so that the water temperature in the steam generator reaches a second preset temperature and keeps for a second preset time.
S203, after the soaking is finished, controlling the drain valve to be opened for a first preset time so as to discharge 3/4-9/10 the sewage in the steam generator.
And S204, controlling the heating pipe of the steam generator to operate at a preset maximum power so as to dry the water remained in the steam generator at the fastest speed, so that the steam generator enters a dry-burning state.
S205, the temperature in the inner cavity of the steam generator is continuously increased, and when the temperature in the inner cavity of the steam generator reaches a first preset temperature, the heating pipe is controlled to stop heating, and a cold and hot impact cycle is completed.
S206, controlling the water supply device to supply the preset water quantity to the steam generator, and executing the steps S203-S205.
S207, judging whether the cold and hot shock cycle reaches a preset number of times, if so, executing S208; if not, go to S206.
And S208, finishing descaling.
In summary, according to the descaling control method for the steam generator provided by the embodiment of the invention, descaling is performed by a cold and hot impact method, effective descaling can be realized without a descaling agent, a user can safely and securely use the steam generator, through the added drainage structure, descaling time is greatly shortened, descaling convenience is improved, user experience is improved, and the method is simple and easy to realize.
In addition, an embodiment of the present invention also proposes a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described descaling control method of the steam generator.
According to the non-transitory computer-readable storage medium of the embodiment of the present invention, when the program stored thereon corresponding to the descaling control method of the steam generator is executed, the scale adhered to the inner cavity of the steam generator can be removed by a thermal shock method, and the removed scale is discharged from the drain outlet without using a descaling agent, thereby saving time and improving convenience of descaling.
In order to realize the embodiment, the invention also provides a descaling control device of the steam generator.
Fig. 3 is a schematic structural diagram of a descaling control device for a steam generator according to an embodiment of the present invention.
As shown in fig. 3, the descaling control apparatus of the steam generator includes: water pump 100, drain valve 200, heating pipe 300, temperature sensor 400, controller 500.
Wherein the water pump 100 is used to supply water to the steam generator. The drain valve 200 is provided corresponding to a drain port of the steam generator. The temperature sensor 400 is disposed corresponding to the inner cavity of the steam generator. The controller 500 is respectively connected with the water pump 100, the drain valve 200, the heating pipe 300 and the temperature sensor 400, and the controller 500 is used for sequentially executing the following steps:
s1, controlling the water pump 100 to supply a preset water amount to the steam generator;
s2, controlling the drain valve 200 to be opened for a first preset time, and controlling the heating pipe to perform heating work at a preset maximum power so as to enable the steam generator to enter a dry-burning state;
the first preset time can be calculated according to the preset water amount and the flow of the drain valve 200, wherein the drain amount H ═ k × H0 when the drain valve 200 is opened for the first preset time, the value of k is 3/4-9/10, and H0 is the preset water amount.
And S3, when the temperature of the inner cavity of the steam generator reaches a first preset temperature, controlling the steam generator to stop heating so as to finish a cold and hot impact cycle.
In this embodiment, the controller 500 repeatedly performs the above-described steps S1-S3 until the number of times of completing the cold-hot impact cycle reaches a preset number of times.
Alternatively, the heating tube 300 may be, but is not limited to, a stainless steel heating tube or an electro-thermal film heating tube.
In some embodiments of the present invention, the controller 500 is further configured to control the heating pipe 300 to operate to heat the steam generator to a second preset temperature and to maintain the second preset temperature for a second preset time after the step S1 is executed and before the step S2 is executed in the first hot and cold shock cycle, wherein the second preset temperature is less than the first preset temperature.
Specifically, in the first cold and hot impact cycle, after the water pump 100 pumps the predetermined amount of water into the steam generator, the controller 500 controls the heating pipe 300 to heat with a certain heating power (e.g., half of the maximum heating power, 3/4, etc.) so as to make the water temperature in the steam generator reach a second predetermined temperature (e.g., 60 to 90 ℃), and adjusts the heating power of the heating pipe 300 (e.g., reducing the heating power, intermittently heating, etc.), so that the water temperature in the steam generator is kept for a second predetermined time (e.g., 1 to 2 minutes) when reaching the second predetermined temperature, so as to further weaken the adhesion force of the scale in the steam generator. And then the controller 500 controls the drain valve 200 to open for a first preset time to discharge the soaked water 3/4-9/10.
Optionally, during the opening process of the drain valve 200, the heating pipe 300 may be in a working state all the time, and the heating power may be set as required, for example, half of the maximum heating power, 3/4, etc. may be used for heating; the heating pipe 300 may also be in a stop state, and the heating pipe 300 is controlled to be opened until the drainage is completed.
In one embodiment of the present invention, the steam generator may be a boiler type steam generator or a flow channel type steam generator.
In one example, as shown in fig. 4 and 5, when the steam generator is a boiler type steam generator, the temperature sensor 400 is disposed on the steam generator sidewall 3, and the temperature sensing element 4 of the temperature sensor 400 is disposed in the steam generator cavity 6. The water inlet 1 and the water outlet 2 are both provided at the bottom of the steam generator, the water pump 100 may be connected to the water inlet 1 through a water inlet pipe, and the drain valve 200 may be provided on the water outlet 2 or on a drain pipe connected to the water outlet 2. The controller 500 can control the water pump 100, the drain valve 200 and the heating pipe 300 by using a main control circuit board chip 501 and a main control circuit board switching device 502 shown in fig. 5. It should be understood that the dotted lines shown in fig. 5 connecting the main control circuit board chip 501 are all control connection lines, and the dotted arrows indicate the transmission direction of signals.
As shown in fig. 5, when the boiler type steam generator is descaled, the main control circuit board chip 501 controls the water pump 100 to work, so that water in the water box 5 is pumped into the inner cavity 6 of the steam generator from the water inlet 1, and the pumped water amount is a preset water amount. After the water pumping is completed, the main control circuit board chip 501 controls the heating pipe 300 to start heating at a certain power (which may be half of the maximum heating power) until the temperature of the water in the inner cavity of the steam generator reaches a certain temperature (e.g. 75 ℃) and maintains the temperature for a certain time (e.g. 1.5 minutes) so as to further weaken the adhesion force of the scale in the steam generator.
Further, the main control circuit board chip 501 controls the drain valve 200 to open for a period of time to drain 3/4-9/10 water from the steam generator to the waste water box 7, and further controls the heating pipe 300 to start heating at the maximum heating power to generate a certain amount of steam to assist in washing scale adhered to the heating surface. After the steam generator enters a dry-burning state, the temperature in the inner cavity of the steam generator continuously rises, and when the temperature in the inner cavity of the steam generator reaches the dry-burning temperature (for example 165 ℃), the heating pipe 300 is controlled to stop working. At this point, the first thermal shock cycle is complete.
Further, the water pump 100 is controlled again to pump the preset water amount into the steam generator, the drain valve 200 is controlled to be opened for a period of time, after the water is discharged 3/4-9/10 to the wastewater box 7, the heating pipe 300 is controlled to start heating with the maximum heating power until the temperature in the inner cavity of the steam generator reaches the dry burning temperature (for example 165 ℃), the heating pipe 300 is controlled to stop working, and the process is repeated until the number of cold and hot shock cycles reaches the preset number.
In another example, when the steam generator is a flow-through steam generator, the water inlet and outlet of the steam generator are implemented by a tee. Specifically, as shown in fig. 6, the water inlet 1 and the water outlet 2 are both disposed at the bottom of the steam generator, and the water inlet 1 and the water outlet 2 can be realized by a three-way pipe 9, i.e., the first port of the three-way pipe 9 is the water inlet 1 and can be connected to a water inlet pipe, the second port is the water outlet 2 and can be connected to a water outlet pipe, and the third port is connected to the port of the bottom of the steam generator.
In this example, as shown in fig. 6, the temperature sensor 400 is disposed on the steam generator base plate 8, and the temperature sensing element 4 of the temperature sensor 400 protrudes into the flow channel to the bottom of the steam generator. Similarly, the water pump 100 is connected to the water inlet 1 through a water inlet pipe, and the drain valve 200 may be provided on the drain port 2 or on a drain pipe connected to the drain port 2. The controller 500 can control the water pump 100, the drain valve 200 and the heating pipe 300 by using a main control circuit board chip 501 and a main control circuit board switching device 502 shown in fig. 5. The specific work flow of the control device of the steam generator of this specific example is the same as the work flow of the specific example shown in fig. 4 and 5, and will not be described herein again.
It should be noted that the foregoing explanation of the embodiment of the descaling control method for a steam generator is also applicable to the descaling control device for a steam generator of this embodiment, and will not be described herein again.
According to the descaling control device for the steam generator, descaling is carried out through a cold and hot impact method, effective descaling can be realized without a descaling agent, a user can safely and securely use the steam generator, the descaling time is greatly shortened, the descaling convenience is improved, the user experience is improved, and the device is simple and easy to realize.
In order to implement the above embodiments, the present invention further provides a steam generator including the above descaling control device.
According to the steam generator provided by the embodiment of the invention, the scale adhered to the inner cavity of the steam generator can be removed through the scale removal control device of the steam generator, and the removed scale is discharged from the water outlet without a scale remover, so that the time is saved, the scale removal convenience is improved, and the scale removal control device is simple and easy to realize.
In order to implement the above embodiments, the present invention also provides a cooking appliance including the above steam generator.
According to the cooking electric appliance provided by the embodiment of the invention, by adopting the steam generator, the scale adhered to the inner cavity of the steam generator can be fallen off through the scale removal control device of the steam generator, and the fallen scale is discharged from the water outlet without a scale remover, so that the time is saved, the convenience of scale removal is improved, and the scale removal is simple and easy to realize.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (14)
1. A descaling control method of a steam generator, characterized in that the steam generator comprises a drain valve which is arranged corresponding to a drain outlet of the steam generator, the method comprises the following steps:
s1, supplying a preset water amount to the steam generator, wherein the water supply is stopped after the preset water amount is supplied to the steam generator, and the preset water amount is set according to the design size of a cavity of the steam generator;
s2, controlling the drain valve to be opened for a first preset time, and controlling the steam generator to perform heating work at a preset maximum power after the drain valve is opened for the first preset time so as to enable the steam generator to enter a dry-burning state;
s3, when the temperature of the inner cavity of the steam generator reaches a first preset temperature, controlling the steam generator to stop heating to finish a cold and hot impact cycle;
the above steps S1-S3 are repeatedly performed until the number of times of completing the cold-hot impact cycle reaches a preset number of times.
2. The method for controlling descaling a steam generator according to claim 1, wherein the steam generator is further controlled to perform a heating operation between the steps S1 and S2 in the first hot and cold impact cycle to heat water in the steam generator to a second preset temperature for a second preset time, wherein the second preset temperature is less than the first preset temperature.
3. The method for controlling descaling a steam generator according to claim 1, wherein the first preset time is calculated according to the preset water amount and a flow rate of the drain valve, wherein the drain valve is opened for the first preset time at a drain amount H ═ k ═ H0, wherein k has a value of 3/4 to 9/10, and H0 is the preset water amount.
4. The method of controlling descaling of a steam generator according to claim 3, wherein the steam generator is a boiler type steam generator or a flow channel type steam generator.
5. The method for controlling descaling of a steam generator according to claim 4, wherein the water inlet and the water outlet of the steam generator are implemented by a tee pipe when the steam generator is a flow channel type steam generator.
6. A non-transitory computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the method of any one of claims 1-5.
7. A descaling control apparatus of a steam generator, characterized in that the apparatus comprises:
a water pump for supplying water to the steam generator;
the drain valve is arranged corresponding to a water outlet of the steam generator;
heating a tube;
the temperature sensor is arranged corresponding to the inner cavity of the steam generator;
the controller, the controller respectively with the water pump, the drain valve, the heating pipe with temperature sensor links to each other, the controller is used for carrying out following step in proper order:
s1, controlling the water pump to supply a preset water amount to the steam generator, wherein the water supply is stopped after the preset water amount is supplied to the steam generator, and the preset water amount is set according to the design size of a cavity of the steam generator;
s2, controlling the drain valve to be opened for a first preset time, and controlling the heating pipe to perform heating work at a preset maximum power after the drain valve is opened for the first preset time so that the steam generator enters a dry-burning state;
s3, when the temperature of the inner cavity of the steam generator reaches a first preset temperature, controlling the steam generator to stop heating to finish a cold and hot impact cycle;
wherein the controller repeatedly performs the above steps S1-S3 until the number of times of completing the cold-hot impact cycle reaches a preset number of times.
8. The descaling control apparatus of a steam generator according to claim 7, wherein the controller is further configured to:
in a first hot and cold impact cycle, after the step S1 is executed and before the step S2 is executed, the heating pipe is controlled to operate to heat the steam generator to a second preset temperature and maintain the second preset temperature for a second preset time, wherein the second preset temperature is lower than the first preset temperature.
9. The descaling control device of a steam generator according to claim 7, wherein the first preset time is calculated according to the preset water amount and the flow rate of the drain valve, wherein the drain valve is opened for the first preset time, and the drain amount H ═ k ═ H0, wherein k is 3/4-9/10, and H0 is the preset water amount.
10. The descaling apparatus of claim 7, wherein the steam generator is a boiler type steam generator or a flow channel type steam generator.
11. The descaling control apparatus of a steam generator according to claim 10, wherein the water inlet and the water outlet of the steam generator are implemented by a tee pipe when the steam generator is a flow-path steam generator.
12. The descaling apparatus of a steam generator according to any one of claims 7 to 11, wherein the heating tube is a stainless steel heating tube or an electrothermal film heating tube.
13. A steam generator comprising a descaling control means of the steam generator according to any one of claims 7-12.
14. A cooking appliance comprising the steam generator of claim 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810404486.3A CN108592002B (en) | 2018-04-28 | 2018-04-28 | Cooking appliance, steam generator and descaling control method and device of steam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810404486.3A CN108592002B (en) | 2018-04-28 | 2018-04-28 | Cooking appliance, steam generator and descaling control method and device of steam generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108592002A CN108592002A (en) | 2018-09-28 |
| CN108592002B true CN108592002B (en) | 2020-11-03 |
Family
ID=63620160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810404486.3A Active CN108592002B (en) | 2018-04-28 | 2018-04-28 | Cooking appliance, steam generator and descaling control method and device of steam generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108592002B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3087453B1 (en) * | 2018-10-22 | 2020-10-02 | Seb Sa | PROCESS FOR CLEANING AN IRON EQUIPPED WITH A SCALE COLLECTION CAVIT |
| CN110793015B (en) * | 2019-11-01 | 2022-04-12 | 深圳贝迅科技有限公司 | Descaling control method for steam generator of steam device |
| CN111594822A (en) * | 2020-05-15 | 2020-08-28 | 珠海格力智能装备有限公司 | Descaling method and cleaning apparatus |
| CN114468746A (en) * | 2020-11-13 | 2022-05-13 | 杭州九阳小家电有限公司 | Control method of disc type water storage steam generator and cooking equipment |
| CN112747303A (en) * | 2021-01-25 | 2021-05-04 | 山东金佰特商用厨具有限公司 | Automatic scale-removing steam equipment and control method |
| CN113514501B (en) * | 2021-04-08 | 2024-02-09 | 广东吉宝鼎辰电器有限公司 | Water body monitoring method of steam generator |
| CN113475942A (en) * | 2021-06-23 | 2021-10-08 | 华帝股份有限公司 | Control method of cooking equipment and cooking equipment applying control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2059608A1 (en) * | 1969-08-21 | 1971-06-04 | Foster Wheeler Corp | |
| EP0483622A1 (en) * | 1990-10-27 | 1992-05-06 | JUNO GROSSKÜCHEN GmbH | Process and system for operating a steam generator for cooking apparatus |
| CN203869327U (en) * | 2014-05-03 | 2014-10-08 | 黄一可 | Automatic descaling device of water heater |
| CN106765016A (en) * | 2016-11-14 | 2017-05-31 | 美的集团股份有限公司 | Steam generator and its scale removal control method, device and electrical equipment |
| JP2017227360A (en) * | 2016-06-21 | 2017-12-28 | Ｊｘｔｇエネルギー株式会社 | Boiler scale removing method for boiler facility and washing device |
-
2018
- 2018-04-28 CN CN201810404486.3A patent/CN108592002B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2059608A1 (en) * | 1969-08-21 | 1971-06-04 | Foster Wheeler Corp | |
| EP0483622A1 (en) * | 1990-10-27 | 1992-05-06 | JUNO GROSSKÜCHEN GmbH | Process and system for operating a steam generator for cooking apparatus |
| CN203869327U (en) * | 2014-05-03 | 2014-10-08 | 黄一可 | Automatic descaling device of water heater |
| JP2017227360A (en) * | 2016-06-21 | 2017-12-28 | Ｊｘｔｇエネルギー株式会社 | Boiler scale removing method for boiler facility and washing device |
| CN106765016A (en) * | 2016-11-14 | 2017-05-31 | 美的集团股份有限公司 | Steam generator and its scale removal control method, device and electrical equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108592002A (en) | 2018-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108592002B (en) | Cooking appliance, steam generator and descaling control method and device of steam generator | |
| CN108644755B (en) | Cooking appliance, steam generator and descaling control method and device of steam generator | |
| EP2081479B1 (en) | Dish washing machine and control method of the same | |
| JP2004154576A5 (en) | ||
| US5792276A (en) | Method and apparatus for controlling a dishwasher | |
| CN109199279B (en) | Cleaning control method, cleaning control device and cooking utensil | |
| US20170119229A1 (en) | Methods, systems, and apparatuses for performing a quick cycle in a dishwasher | |
| AU2015250238A1 (en) | Washer/disinfector | |
| KR101314617B1 (en) | Method for controlling dish washer | |
| CN109805741B (en) | Boiler type steam heater, food processor and anti-scale treatment method | |
| RU2643133C2 (en) | Steamer | |
| EP2166914B1 (en) | Controlling method of a dishwasher | |
| JP4116842B2 (en) | Dishwasher | |
| KR20170046252A (en) | Dish washer system and method of controlling the same | |
| CN208388549U (en) | A kind of dish-washing machine | |
| JP2015084815A (en) | Dishwasher with defrosting function | |
| CN110279373B (en) | Control method of washing electric appliance, washing electric appliance and storage medium | |
| JP4771489B2 (en) | dishwasher | |
| JP6043598B2 (en) | Cleaning device | |
| KR0123816B1 (en) | Dishwasher | |
| JP2016087164A (en) | Washing apparatus | |
| AU687762B2 (en) | A method and apparatus for controlling a dishwasher | |
| JP3126085B2 (en) | Dishwasher operation control method | |
| JPH09285433A (en) | Dish washing/drying machine | |
| JP2021042867A (en) | Water filling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |