CN108041975B - Heating control method of food processing machine - Google Patents
Heating control method of food processing machine Download PDFInfo
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- CN108041975B CN108041975B CN201710674810.9A CN201710674810A CN108041975B CN 108041975 B CN108041975 B CN 108041975B CN 201710674810 A CN201710674810 A CN 201710674810A CN 108041975 B CN108041975 B CN 108041975B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 217
- 238000000034 method Methods 0.000 title claims abstract description 37
- 235000013305 food Nutrition 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 270
- 239000000463 material Substances 0.000 claims abstract description 66
- 239000000203 mixture Substances 0.000 claims description 44
- 238000005086 pumping Methods 0.000 claims description 20
- 238000009835 boiling Methods 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 11
- 230000017525 heat dissipation Effects 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 24
- 238000001514 detection method Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 206010053615 Thermal burn Diseases 0.000 description 4
- 238000004537 pulping Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 235000010469 Glycine max Nutrition 0.000 description 2
- 244000068988 Glycine max Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/04—Cooking-vessels for cooking food in steam; Devices for extracting fruit juice by means of steam ; Vacuum cooking vessels
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/04—Cooking-vessels for cooking food in steam; Devices for extracting fruit juice by means of steam ; Vacuum cooking vessels
- A47J2027/043—Cooking-vessels for cooking food in steam; Devices for extracting fruit juice by means of steam ; Vacuum cooking vessels for cooking food in steam
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
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Abstract
The embodiment of the invention discloses a heating control method of a food processor, wherein a heating system of the food processor comprises a steam generating device, and the steam generating device comprises a heating pipe; the heating pipe converts water entering the steam generating device into steam, and the heating system heats the material through the output steam, and the method comprises the following steps: the water outlet state of the steam generating device is controlled by controlling the water inlet speed and the water outlet temperature of the steam generating device so as to realize multiple heating modes.
Description
Technical Field
The embodiment of the invention relates to a control technology of cooking equipment, in particular to a heating control method of a food processing machine.
Background
The current food processor has the following problems:
1. food processing machines (such as soybean milk machines or food processors) generally use a heating pipe or an electromagnetic heating mode to directly heat or boil materials, the materials are easily adhered to the wall of a container due to overhigh temperature of a heating container, so that the problem of pipe pasting is caused, the taste of the beverage is influenced, and the cleaning of users is troublesome;
2. at present, functional requirements of users on food processing machines are higher and higher, and the food processing machines have a trend of multiple functions, but the current steam heating mode is single, only the steam is simply generated and used for heating or preserving heat of food materials, and a reliable and stable control means is not provided for ensuring the heating effect of steam heating and adjusting the heating effect of the steam heating, so that the heating requirements of cooking with different functions are met; in addition, the steam generation effect in the prior art is unstable, and the stability and reliability of steam heating cannot be ensured;
3. the principle of steam heating is that steam is used for heating materials, but if the interior of the machine is blocked, a large amount of steam is accumulated and can explode, and personal safety of customers is seriously harmed; moreover, the temperature of the steam is very high, and if the steam is sprayed out of the machine during steam heating, customers are easily scalded. Therefore, when steam heating is applied, the safety of the steam heating is ensured to be crucial;
4. the steam heating water storage module is installed and the water level detection needs to be additionally provided with a detection circuit, so that the installation is complex and the cost is increased.
Disclosure of Invention
The embodiment of the invention provides a heating control method of a food processor, which can solve the problems that the current heating mode is single and unstable, and the multifunctional pulping requirement of the food processor cannot be met.
In order to solve the technical problem, the embodiment of the invention adopts the following technical scheme:
a heating control method of a food processor comprises a steam generating device, wherein the steam generating device comprises a heating pipe; the heating pipe converts water entering the steam generating device into steam, and the heating system heats the material through the output steam, and the method comprises the following steps:
the water outlet state of the steam generating device is controlled by controlling the water inlet speed and the water outlet temperature of the steam generating device so as to realize multiple heating modes.
Optionally, the effluent state comprises: water, a water vapor mixture, and steam.
Optionally, the controlling of the water outlet state of the steam generating device by controlling the water inlet speed and the water outlet temperature of the steam generating device comprises:
setting the water inlet speed of the steam generating device at a first speed, directly outputting the entering water or controlling a heating pipe to heat the entering water to a first preset temperature for outputting so as to output water with the water temperature less than or equal to the first temperature; wherein the first preset temperature is less than or equal to the first temperature;
calculating a first water inlet speed according to a preset first equation, controlling water inlet according to the calculated first water inlet speed, and controlling a heating pipe to heat the entering water to a second preset temperature for output so as to output the water with the water temperature higher than the first temperature; wherein the second preset temperature is higher than the first temperature;
and calculating a second water inlet speed according to a preset second equation, controlling water inlet according to the calculated second water inlet speed, and controlling the heating pipe to heat the entering water to a water-vapor mixture or steam state for output.
Optionally, the first equation comprises:
wherein, L1 is a first water inlet speed, c is a specific heat capacity of water, β is a heating efficiency of the heating tube, P is a maximum power of the heating tube, T1 is a water inlet temperature, and T2 is a preset water outlet temperature;
the second equation includes: l2 ═ α × M;
wherein L2 is the second water inlet speed, M is the mass of the material, and alpha is the proportionality coefficient.
Optionally, the method further comprises: when the steam-water mixture or the steam is output, the steam temperature is determined according to the material temperature, and when the temperature of the steam-water mixture or the steam reaches the determined steam outlet temperature, the steam-water mixture or the steam is output.
Optionally, determining the steam temperature according to the material temperature comprises:
when the detected material temperature is less than or equal to a preset first temperature threshold, determining that the steam temperature is greater than or equal to a preset second temperature threshold;
when the temperature of the detected material is higher than the first temperature threshold, determining that the steam temperature is lower than a second temperature threshold;
the temperature difference between the steam outlet temperature and the second temperature threshold value is increased along with the increase of the temperature difference between the material temperature and the first temperature threshold value; the first temperature threshold is less than the second temperature threshold.
Optionally, the method further comprises: when the water-vapor mixture or the steam is output, determining the steam temperature according to different heating modes, and outputting the water-vapor mixture or the steam when the temperature of the water-vapor mixture or the steam reaches the determined steam outlet temperature;
wherein, the heating mode includes: rapid heating, normal heating, boiling heating and heat preservation heating.
Optionally, determining the steam temperature according to the different heating modes comprises:
when the heating device is in the rapid heating mode, setting the steam outlet temperature at a temperature which is higher than the boiling point and meets a first temperature range;
when the heating device is in the normal heating mode, setting the steam outlet temperature at a temperature which is higher than the boiling point and meets a second temperature range;
when the steam is in a boiling or heat preservation heating mode, setting the steam outlet temperature at the boiling point temperature;
wherein the temperature of the first temperature range is higher than the temperature of the second temperature range.
Optionally, the method further comprises: and detecting the water temperature and the steam outlet temperature in real time, and performing closed-loop control on the water inlet speed and the heating power of the heating pipe through the detected water outlet temperature and steam outlet temperature in real time.
Optionally, the performing closed-loop control on the water inlet speed and the heating power of the heating pipe through the outlet water temperature and the outlet steam temperature detected in real time includes:
when the temperature value that the outlet water temperature is higher than the corresponding preset temperature reaches a preset first threshold value, judging the heating power gear Level of the heating pipe, if the Level is the minimum gear, increasing the water pumping speed to increase the water inlet speed, and if the Level is not the minimum gear, reducing the Level of the heating pipe;
when the temperature value that the steam outlet temperature is lower than the determined temperature reaches a preset second threshold value, the Level of the heating pipe is judged, if the Level is the maximum gear, the water pumping speed is reduced to reduce the water inlet speed, and if the Level is not the maximum gear, the Level of the heating pipe is increased.
Optionally, the method further comprises:
detecting the pressure in the pipeline in real time through a preset pressure sensor in the steam pipeline, and reducing the water pumping speed to reduce the steam generation amount when the pressure in the pipeline is detected to be greater than or equal to a preset pressure threshold value K; when the pressure in the pipeline is continuously detected to be larger than or equal to a pressure threshold value K for multiple times within the preset time, closing the heating pipe and feeding water, and sending an alarm prompt; and the number of the first and second groups,
detecting the temperature of steam escaping from the sealing cover in real time through a temperature sensor arranged on the sealing cover of the cavity of the food processor, and when the temperature of the escaping steam is detected to be greater than or equal to a preset high-temperature threshold value TmaxAnd when the control cavity is used, the heat dissipation device arranged on the sealing cover of the control cavity is started to dissipate heat.
The embodiment of the invention has the beneficial effects that:
1. the embodiment of the invention controls the water outlet state of the steam generating device by controlling the water inlet speed and the water outlet temperature of the steam generating device so as to realize multiple heating modes, and solves the problems that the current heating mode is single and unstable and cannot meet the multifunctional pulping requirement of a food processing machine.
2. The water outlet state of the embodiment of the invention can comprise: water, a water vapor mixture, and steam. The heating system realizes multiple heating modes of cold water, hot water, water-vapor mixture, low-temperature steam and high-temperature steam output by the same heating system, and solves the problems of pipe pasting, difficult cleaning and the like caused by single heating mode and direct heating of a common heating mode of the existing heating system.
3. According to the embodiment of the invention, when the water-vapor mixture or the steam is output, the steam temperature is determined according to the material temperature, and when the temperature of the water-vapor mixture or the steam reaches the determined steam outlet temperature, the water-vapor mixture or the steam is output. The embodiment scheme ensures the stability and reliability of the steam heating effect under different material temperature conditions.
4. When the water-vapor mixture or steam is output, the steam temperature is determined according to different heating modes, and when the temperature of the water-vapor mixture or steam reaches the determined steam outlet temperature, the water-vapor mixture or steam is output; the embodiment scheme ensures the reliability of steam heating.
5. The embodiment of the invention detects the pressure in the pipeline in real time through a preset pressure sensor in the steam pipeline, and reduces the water pumping speed to reduce the steam generation amount when the pressure in the pipeline is detected to be greater than or equal to a preset pressure threshold value K; when the pressure in the pipeline is continuously detected to be larger than or equal to a pressure threshold value K for multiple times within the preset time, the heating pipe and the water inlet are closed, and an alarm prompt is sent out. According to the scheme of the embodiment, the safety of the steam heating system is guaranteed by utilizing a pipeline pressure control technology and an intelligent cooling technology, and the potential safety hazard of the existing steam heating system is solved.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a flow chart of a heating control method of a food processor according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a heating control method of a food processor according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a method for performing closed-loop control on the water inlet speed, the water outlet temperature and the steam outlet temperature according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
Example one
A heating control method of a food processor comprises a steam generating device, wherein the steam generating device comprises a heating pipe; the heating pipe converts water entering the steam generating device into steam, and the heating system heats the material through the output steam, and as shown in fig. 1, the method may include S101:
s101, controlling the water outlet state of the steam generating device by controlling the water inlet speed and the water outlet temperature of the steam generating device so as to realize multiple heating modes.
Optionally, the effluent state comprises: water, a water vapor mixture, and steam.
In the embodiment of the invention, the heating system can set the water inlet speed and the water outlet temperature value, different water inlet speeds determine the water inlet amount and the steam amount in unit time, and different water outlet temperatures determine the output of cold water, hot water or steam, so that the same heating system can output various heating modes of cold water, hot water, a water-steam mixture, low-temperature steam and high-temperature steam. The problems that the heating mode of the existing heating system is single, and materials are stuck with pipes and difficult to clean due to direct heating in a common heating mode are solved.
Alternatively, controlling the water outlet state of the steam generating device by controlling the water inlet speed and the water outlet temperature of the steam generating device may include the following three cases:
setting the water inlet speed of a steam generating device at a first speed, directly outputting the entering water or controlling a heating pipe to heat the entering water to a first preset temperature for outputting so as to output water with the water temperature less than or equal to the first temperature; wherein the first preset temperature is less than or equal to the first temperature.
In an embodiment of the invention, the first velocity may be a maximum water inflow velocity of the steam generating device. When cold water or normal-temperature water needs to be output, the water inlet speed can be set to be the maximum gear (such as the first speed) so as to reduce the water inlet time, and the inlet water is directly output, so that the cold water or the normal-temperature water can be obtained. When the output of the warm water with a lower temperature is required, for example, the temperature of the output water is required to be less than or equal to the first temperature, the water inlet speed can also be set to the maximum gear to reduce the water inlet time, and the heating pipe is controlled to heat the entering water to the first preset temperature for output, wherein the first preset temperature is the temperature less than or equal to the first temperature, so as to output the water with the water temperature less than or equal to the first temperature.
Calculating a first water inlet speed according to a preset first equation, controlling water inlet according to the calculated first water inlet speed, and controlling a heating pipe to heat the entering water to a second preset temperature for output so as to output the water with the water temperature higher than the first temperature; wherein the second preset temperature is higher than the first temperature.
In the embodiment of the present invention, when hot water needs to be output, for example, water with a temperature greater than the first temperature, the water inlet speed L may be determined according to the water outlet temperature T2 and the maximum power P of the heating pipe, and specifically, may be calculated by the following first equation. For the outlet water temperature, the water entering the steam generating device can be heated to a second preset temperature, and the second preset temperature is higher than the first temperature, so that hot water with the water temperature higher than the first temperature can be output.
Optionally, the first equation may include:
wherein, L1 is the first water inlet speed, c is the specific heat capacity of water, β is the heating efficiency of the heating tube, P is the maximum power of the heating tube, T1 is the water inlet temperature, and T2 is the preset water outlet temperature.
And thirdly, calculating a second water inlet speed according to a preset second equation, controlling water inlet according to the calculated second water inlet speed, and controlling the heating pipe to heat the entering water to a water-vapor mixture or steam state for output.
In the embodiment of the present invention, when the steam mixture or the steam needs to be output, the water inlet speed L may be determined according to the material amount M, and specifically, may be calculated by the following second equation.
Optionally, the second equation may include: l2 ═ α × M;
wherein L2 is the second water inlet speed, M is the mass of the material, and alpha is the proportionality coefficient.
In the embodiment of the invention, the more the material quantity is, the faster the water inlet speed is, and the material can be ensured to be heated or boiled quickly. The proportionality coefficient alpha can be set according to the heating effect of a specific machine type; so as to ensure that the heating effect is quick and reliable under the condition of different capacities.
In the embodiment of the present invention, the detection method of the material amount M may determine the material amount according to the volume selected by the user or detect and determine the material amount when the material is added by using the flow detection module, as shown in fig. 2; the weight of the material carrying cup can be detected through the gravity sensor to determine the material quantity. In the embodiment of the present invention, a specific method for acquiring the material amount is not limited.
Optionally, the method further comprises: when the steam-water mixture or the steam is output, the steam temperature is determined according to the material temperature, and when the temperature of the steam-water mixture or the steam reaches the determined steam outlet temperature, the steam-water mixture or the steam is output.
In the embodiment of the invention, when cold water, warm water or hot water needs to be output, namely the water outlet state is water, the water outlet temperature is directly set to be room temperature or the required water temperature for heating. When steam or water-vapor mixture need to be output, the outlet water temperature can be set according to the material temperature T3, and the stability and the reliability of the steam heating effect under different material temperature conditions are ensured.
Optionally, determining the steam temperature according to the material temperature may include:
when the detected material temperature is less than or equal to a preset first temperature threshold, determining that the steam temperature is greater than or equal to a preset second temperature threshold;
when the temperature of the detected material is higher than the first temperature threshold, determining that the steam temperature is lower than a second temperature threshold;
the temperature difference between the steam outlet temperature and the second temperature threshold value is increased along with the increase of the temperature difference between the material temperature and the first temperature threshold value; the first temperature threshold is less than the second temperature threshold.
In the embodiment of the invention, the heating effect is more obvious when the temperature difference between the material and the steam is larger, but when the temperature of the material is higher, the material is easy to overflow if the temperature of the steam is too high. In order to guarantee the effect of steam heating, overflow when avoiding steam heating simultaneously, this scheme sets for steam temperature according to material temperature, and material temperature is higher, and steam temperature is lower more.
Example two
This embodiment differs from the first embodiment in that a further method for determining the exit temperature of the output steam or steam mixture is provided.
Optionally, the method further comprises: when the water-vapor mixture or the steam is output, determining the steam temperature according to different heating modes, and outputting the water-vapor mixture or the steam when the temperature of the water-vapor mixture or the steam reaches the determined steam outlet temperature;
wherein, the heating mode includes: rapid heating, normal heating, boiling heating and heat preservation heating.
Optionally, determining the steam temperature according to the different heating modes comprises:
when the heating device is in the rapid heating mode, setting the steam outlet temperature at a temperature which is higher than the boiling point and meets a first temperature range;
when the heating device is in the normal heating mode, setting the steam outlet temperature at a temperature which is higher than the boiling point and meets a second temperature range;
when the steam is in a boiling or heat preservation heating mode, setting the steam outlet temperature at the boiling point temperature;
wherein the temperature of the first temperature range is higher than the temperature of the second temperature range.
In an embodiment of the present invention, the first temperature range may include: 10-20 ℃; the second temperature range may include: 2 to 8 ℃.
In the embodiment of the invention, when the material needs to be heated quickly, the steam outlet temperature T2 can be set to be 10-20 ℃ above the boiling point, and the material is heated quickly by high-temperature steam. When normal heating is needed, the steam outlet temperature T2 can be set to be 2-8 ℃ above the boiling point, and low-temperature steam is used for heating the materials. When the material needs to be boiled or kept warm, the steam outlet temperature T2 can be set as the boiling point, and the material is boiled by using a water-steam mixture.
In the embodiment of the present invention, the steam outlet temperature T2 and the material temperature T3 may be detected by a preset temperature detection module.
EXAMPLE III
As shown in fig. 3, this embodiment is different from the first embodiment in that closed-loop control is performed on the water inlet speed, the water outlet temperature, and the steam outlet temperature.
Optionally, the method may further include: and detecting the water temperature and the steam outlet temperature in real time, and performing closed-loop control on the water inlet speed and the heating power of the heating pipe through the detected water outlet temperature and steam outlet temperature in real time.
Optionally, the performing closed-loop control on the water inlet speed and the heating power of the heating pipe through the outlet water temperature and the outlet steam temperature detected in real time may include:
when the temperature value that the outlet water temperature is higher than the corresponding preset temperature reaches a preset first threshold value, judging the heating power gear Level of the heating pipe, if the Level is the minimum gear, increasing the water pumping speed to increase the water inlet speed, and if the Level is not the minimum gear, reducing the Level of the heating pipe;
when the temperature value that the steam outlet temperature is lower than the determined temperature reaches a preset second threshold value, the Level of the heating pipe is judged, if the Level is the maximum gear, the water pumping speed is reduced to reduce the water inlet speed, and if the Level is not the maximum gear, the Level of the heating pipe is increased.
In the embodiment of the invention, the water inlet speed L can be adjusted by controlling the water pumping module through a driving circuit of the water pumping module, the water inlet speed L can be obtained by detecting the water inlet amount in unit time through the flow detection module, and the detected water inlet speed is compared with the pre-calculated water inlet speed to determine whether the detected actual water inlet speed is within the fault tolerance range of the pre-calculated water inlet speed, and when the water inlet speed L is detected to be not within the fault tolerance range of the pre-calculated water inlet speed, the water pumping module can be controlled by a driving system of the water pumping module to adjust the water inlet speed so as to ensure that the water inlet speed is stable and reliable; thereby realizing the closed-loop control of the water inlet speed.
In the embodiment of the invention, the heating system sets the heating power Level according to the inlet water temperature T1, the inlet water speed L and the outlet water temperature T2, so that the stability and the reliability of the steam heating effect are ensured when the inlet water temperature T1 changes.
Alternatively, the heating power Level may be determined by the following equation:
level＝L×(T2-T1)×c÷β；
wherein c is the specific heat capacity of water, beta is the heating efficiency of the heating pipe, T2 is the steam outlet temperature, and T1 is the water inlet temperature. By setting the power of the heating pipe in the embodiment of the method, the stability of the steam outlet temperature T2 can be ensured, and the steam heating reliability is improved.
Example four
This embodiment gives a solution for determining the effect of steam heating on the basis of any of the embodiments described above.
Optionally, detecting whether the temperature of the material temperature T3 is within a preset temperature range through a preset temperature sensor, and determining that a preset steam heating effect is achieved when the material temperature T3 is within the preset temperature range; when the material temperature T3 is not within the preset temperature range, it is determined that the preset steam heating effect is not achieved.
In the embodiment of the invention, the heating system can control the water inlet speed through the water pumping module according to the water inlet speed and the water outlet temperature value determined in the scheme, and detect the flow through the flow detection module and calibrate the water inlet speed, so that the stability and reliability of the water inlet speed are ensured; in addition, the water outlet temperature is controlled by controlling the power of the heating pipe, and the power of the heating pipe is controlled by using the water outlet temperature detection sensor in a closed loop mode, so that the stability and reliability of the water outlet temperature are ensured, and the problems that in the prior art, a steam generator only generates steam, but cannot ensure the steam output and the reliability of the steam heating effect are solved.
In the embodiment of the invention, the temperature sensor can be used for detecting the temperature of the material temperature T3 and determining whether the steam heating effect meets the requirement, so that the reliability of the steam heating effect is ensured. In addition, the steam heating effect is comprehensively influenced by factors such as water inlet speed L, heating power gear Level, steam temperature T2 and material quantity M, the reliability of single conditions such as water inlet speed L, heating power gear Level, steam outlet temperature T2 and material quality M can be guaranteed, the steam heating effect can be detected and controlled, and the reliability of the steam heating system is further guaranteed.
In the embodiment of the invention, the steam heating effect can be judged by the rising speed of the material temperature in unit time, and if the rising speed of the material temperature in unit time reaches a preset standard, the preset steam heating effect is determined to be reached; and if the rising speed of the material temperature in unit time does not reach the preset standard, determining that the preset steam heating effect is not reached. If the steam heating effect is not within the design range, only the pumping speed L needs to be adjusted, other parameters can be automatically adjusted according to the scheme, and the reliability of the overall steam heating effect is ensured.
In the embodiment of the invention, the flow detection module can not only detect and control the material quantity (namely the material quality), but also detect whether the water storage module has water or not and whether the water pumping is abnormal, so that the risks of machine burning and the like caused by dry burning of the heating pipe are prevented, and the safety of the steam heating system is ensured. If the flow is zero in unit time, the water pumping module is considered to be abnormal or no water exists in the water storage module, heating and water inlet can be closed, and alarm prompt is carried out.
EXAMPLE five
This embodiment improves the hardware of the food processor on the basis of any of the above embodiments, and improves the safety of the steam heating system.
Optionally, the method further comprises:
detecting the pressure in the pipeline in real time through a preset pressure sensor in the steam pipeline, and reducing the water pumping speed to reduce the steam generation amount when the pressure in the pipeline is detected to be greater than or equal to a preset pressure threshold value K; when the pressure in the pipeline is continuously detected to be larger than or equal to a pressure threshold value K for multiple times within the preset time, closing the heating pipe and feeding water, and sending an alarm prompt; and the number of the first and second groups,
detecting the temperature of steam escaping from the sealing cover in real time through a temperature sensor arranged on the sealing cover of the cavity of the food processor, and when the temperature of the escaping steam is detected to be greater than or equal to a preset high-temperature threshold value TmaxAnd when the control cavity is used, the heat dissipation device arranged on the sealing cover of the control cavity is started to dissipate heat.
In the embodiment of the invention, a large pressure exists in the steam pipeline due to the generation of a large amount of gas, so that safety risk exists; also, the steam temperature is high and if the steam escapes from the container, it is easy to scald the customer. According to the technical scheme, the safety of the steam heating system is guaranteed by utilizing a pipeline pressure control technology and an intelligent cooling technology, and the potential safety hazard of the existing steam heating system is solved.
In the embodiment of the invention, the pressure sensor is designed in the steam pipeline in the scheme of the embodiment, so that the pipeline pressure is detected and controlled in real time, the safety risks such as steam overflow or pipe explosion are prevented, and the safety of the steam heating system is ensured. Specifically, when the main control unit MCU detects that the pipeline pressure exceeds a threshold value K, the water pumping speed L is reduced, the generation of steam quantity is reduced, and the pipeline pressure is reduced. If the MCU continuously detects that the pressure of the pipeline exceeds a threshold value K, heating and water inlet are closed, and an alarm is given to prompt that the pipeline is blocked.
In the embodiment of the present invention, the pressure threshold K may be the maximum pressure that the pipeline can withstand in long-term stable operation.
In the embodiment of the invention, the pressure control of the steam pipeline is realized, the pipeline pressure is adjusted in real time, the pipe explosion when the steam quantity is overlarge is prevented, the abnormal blockage of the pipeline can be detected, the alarm is given out, and the safety of steam heating is improved.
In the embodiment of the invention, in order to prevent steam from escaping from the cavity to scald a customer, a heat dissipation device and a temperature sensor are designed on the cavity sealing cover, and the heat dissipation device can be preferably a fan. When the MCU detects that the temperature T4 of the steam escaping from the sealing cover is higher than the high-temperature threshold TmaxWhen the device is used, the fan is controlled to work to dissipate heat, so that high-temperature steam is prevented from escaping to scald customers;
in the embodiment of the invention, the high temperature threshold TmaxThe method can comprise the following steps: the second scald temperature point is 75 ℃.
The beneficial effects of the embodiment of the invention can include:
1. the embodiment of the invention controls the water outlet state of the steam generating device by controlling the water inlet speed and the water outlet temperature of the steam generating device so as to realize multiple heating modes, and solves the problems that the current heating mode is single and unstable and cannot meet the multifunctional pulping requirement of a food processing machine.
2. The water outlet state of the embodiment of the invention can comprise: water, a water vapor mixture, and steam. The heating system can output cold water, hot water, water-vapor mixture, low-temperature steam and high-temperature steam in multiple heating modes. The problems that the heating mode of the existing heating system is single, and materials are stuck with pipes and difficult to clean due to direct heating in a common heating mode are solved.
3. According to the embodiment of the invention, when the water-vapor mixture or the steam is output, the steam temperature is determined according to the material temperature, and when the temperature of the water-vapor mixture or the steam reaches the determined steam outlet temperature, the water-vapor mixture or the steam is output. The embodiment scheme ensures the stability and reliability of the steam heating effect under different material temperature conditions.
4. When the water-vapor mixture or steam is output, the steam temperature is determined according to different heating modes, and when the temperature of the water-vapor mixture or steam reaches the determined steam outlet temperature, the water-vapor mixture or steam is output; the embodiment scheme ensures the reliability of steam heating.
5. The embodiment of the invention detects the pressure in the pipeline in real time through a preset pressure sensor in the steam pipeline, and reduces the water pumping speed to reduce the steam generation amount when the pressure in the pipeline is detected to be greater than or equal to a preset pressure threshold value K; when the pressure in the pipeline is continuously detected to be larger than or equal to a pressure threshold value K for multiple times within the preset time, the heating pipe and the water inlet are closed, and an alarm prompt is sent out. According to the scheme of the embodiment, the safety of the steam heating system is guaranteed by utilizing a pipeline pressure control technology and an intelligent cooling technology, and the potential safety hazard of the existing steam heating system is solved.
In a word, the problems of pipe pasting and difficult cleaning of materials caused by direct heating in a common heating mode are solved through the scheme of the embodiment of the invention; the problem that the existing heating mode is single and unstable, and the requirement of multifunctional pulping of the soybean milk machine cannot be met is solved; the potential safety problem of steam heating is solved, the safety of steam heating is improved, and the personal safety of a user is protected; the problem of prior art water storage equipment detection is solved, the complete machine structure is simpler, and the cost is lower.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A heating control method of a food processor, wherein a heating system of the food processor comprises a steam generating device, and the steam generating device comprises a heating pipe; the heating pipe converts water entering the steam generating device into steam, and the heating system heats materials through the output steam, and the method is characterized by comprising the following steps:
through control steam generator's water inlet speed and play water temperature control steam generator's play water state to realize multiple heating methods, it includes to go out the water state: water, a water vapor mixture, and steam.
2. The method of claim 1, wherein the controlling the water output state of the steam generating device by controlling the water input speed and the water output temperature of the steam generating device comprises:
setting the water inlet speed of the steam generating device at a first speed, directly outputting the entering water or controlling the heating pipe to heat the entering water to a first preset temperature for outputting so as to output water with the water temperature less than or equal to the first temperature; wherein the first preset temperature is less than or equal to the first temperature;
or calculating a first water inlet speed according to a preset first equation, controlling water inlet according to the calculated first water inlet speed, and controlling the heating pipe to heat the entering water to a second preset temperature for output so as to output the water with the water temperature higher than the first temperature; wherein the second preset temperature is greater than the first temperature;
or, calculating a second water inlet speed according to a preset second equation, controlling water inlet according to the calculated second water inlet speed, and controlling the heating pipe to heat the inlet water to the water-vapor mixture or the steam state for output;
wherein the first equation comprises:
wherein L1 is the first water inlet speed, c is the specific heat capacity of water, β is the heating efficiency of the heating tube, P is the maximum power of the heating tube, T1 is the water inlet temperature, and T2 is the preset water outlet temperature;
the second equation comprises: l2 ═ α × M;
wherein L2 is the first water inlet speed, M is the mass of the material, and alpha is a proportionality coefficient.
3. The method of claim 2, further comprising: and when the temperature of the water-vapor mixture or the steam reaches the determined steam outlet temperature, outputting the water-vapor mixture or the steam.
4. The method of claim 3, wherein determining the steam temperature based on the material temperature comprises:
when the material temperature is detected to be less than or equal to a preset first temperature threshold, determining that the steam outlet temperature is greater than or equal to a preset second temperature threshold;
when the material temperature is detected to be higher than the first temperature threshold value, determining that the steam outlet temperature is lower than the second temperature threshold value;
wherein the temperature difference between the steam outlet temperature and the second temperature threshold increases with an increase in the temperature difference between the material temperature and the first temperature threshold; the first temperature threshold is less than the second temperature threshold.
5. The method of claim 2, further comprising: determining steam temperature according to different heating modes when outputting the water-steam mixture or the steam, and outputting the water-steam mixture or the steam when the temperature of the water-steam mixture or the steam reaches the determined steam outlet temperature;
wherein the heating mode includes: rapid heating, normal heating, boiling heating and heat preservation heating.
6. The method of claim 5, wherein determining the steam temperature based on the different heating modes comprises:
setting the steam outlet temperature at a temperature higher than the boiling point and satisfying a first temperature range when in the rapid heating mode;
when in the normal heating mode, setting the steam outlet temperature at a temperature which is higher than the boiling point and meets a second temperature range;
when the steam boiler is in the boiling heating mode or the heat preservation heating mode, setting the steam outlet temperature at the boiling point temperature;
wherein the temperature of the first temperature range is higher than the temperature of the second temperature range.
7. A method of controlling heating of a food processor as claimed in claim 3 or 5, wherein the method further comprises: and detecting the water temperature and the steam outlet temperature in real time, and performing closed-loop control on the water inlet speed and the heating power of the heating pipe through the detected water outlet temperature and steam outlet temperature in real time.
8. The method of claim 7, wherein the closed-loop controlling the water inlet speed and the heating power of the heating tube by the real-time detected water outlet temperature and steam outlet temperature comprises:
when the temperature value that the water outlet temperature is higher than the corresponding preset temperature is detected to reach a preset first threshold value, judging the heating power Level of the heating pipe, if the Level is the minimum Level, increasing the water pumping speed to increase the water inlet speed, and if the Level is not the minimum Level, reducing the Level of the heating pipe;
when the temperature value that the steam outlet temperature is lower than the determined temperature reaches a preset second threshold value, the Level of the heating pipe is judged, if the Level is the maximum gear, the water pumping speed is reduced to reduce the water inlet speed, and if the Level is not the maximum gear, the Level of the heating pipe is increased.
9. The method of claim 1, further comprising:
detecting the pressure in the pipeline in real time through a preset pressure sensor in the steam pipeline, and reducing the water pumping speed to reduce the steam generation amount when the pressure in the pipeline is detected to be greater than or equal to a preset pressure threshold value K; when the pressure in the pipeline is continuously detected to be larger than or equal to the pressure threshold K for multiple times within the preset time, closing the heating pipe and the water inlet, and sending out an alarm prompt; and the number of the first and second groups,
detecting the temperature of steam escaping from a sealing cover in real time through a temperature sensor arranged on the sealing cover of the cavity of the food processor, and when the temperature of the escaping steam is detected to be greater than or equal to a preset high-temperature threshold value TmaxAnd controlling a heat dissipation device arranged on the cavity sealing cover to start for heat dissipation.
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| CN110881852B (en) * | 2018-09-11 | 2021-07-23 | 宁波方太厨具有限公司 | Water adding method of steam box |
| CN111166156B (en) * | 2018-11-12 | 2021-07-06 | 九阳股份有限公司 | Steam temperature control method for steam heating type cooking utensil |
| CN111387803B (en) * | 2019-01-03 | 2021-07-23 | 宁波方太厨具有限公司 | Steam system of double-inner-container steam box and detection method for steam valve fault of steam system |
| CN109744858A (en) * | 2019-01-15 | 2019-05-14 | 深圳汉食智能科技有限公司 | A kind of energy storage steaming device and method |
| CN110301827B (en) * | 2019-06-27 | 2021-09-10 | 九阳股份有限公司 | Water outlet control method of food processor |
| CN110960073B (en) * | 2019-11-26 | 2021-05-11 | 九阳股份有限公司 | Steam output control method of food processor and food processor |
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| CN1051238A (en) * | 1989-10-21 | 1991-05-08 | 张瑞珍 | Multifunctional energy-saving stove |
| CN201050777Y (en) * | 2007-06-21 | 2008-04-23 | 吴达新 | Multifunctional movable steam generator |
| JP2010054176A (en) * | 2008-08-29 | 2010-03-11 | Sharp Corp | Cooker |
| CN101907286B (en) * | 2010-07-01 | 2011-12-07 | 宁波凯波集团有限公司 | Instantaneous heating core |
| CN101947049B (en) * | 2010-07-30 | 2012-01-18 | 真功夫餐饮管理有限公司 | Automatic porridge machine |
| CN202619406U (en) * | 2012-06-01 | 2012-12-26 | 上海老磨坊餐饮管理有限公司 | Control system of steam stone pot |
| CN203907694U (en) * | 2014-06-17 | 2014-10-29 | 广东美的厨房电器制造有限公司 | Micro-wave oven |
| CN105433747A (en) * | 2014-08-14 | 2016-03-30 | 广东美的厨房电器制造有限公司 | Baking oven and control method thereof |
| CN206369201U (en) * | 2016-10-24 | 2017-08-01 | 佛山吉宝信息科技有限公司 | It is a kind of it is very fast go out steam steam generator |
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