CN115089030B - Oven based on intelligent temperature control heating and intelligent temperature control heating method - Google Patents
Oven based on intelligent temperature control heating and intelligent temperature control heating method Download PDFInfo
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- CN115089030B CN115089030B CN202211004120.XA CN202211004120A CN115089030B CN 115089030 B CN115089030 B CN 115089030B CN 202211004120 A CN202211004120 A CN 202211004120A CN 115089030 B CN115089030 B CN 115089030B
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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
- A47J37/00—Baking; Roasting; Grilling; Frying
- A47J37/06—Roasters; Grills; Sandwich grills
- A47J37/0623—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity
- A47J37/0629—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity with electric heating elements
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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
- A47J37/00—Baking; Roasting; Grilling; Frying
- A47J37/06—Roasters; Grills; Sandwich grills
- A47J37/0623—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity
- A47J37/0664—Accessories
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/22—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element being a thermocouple
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Electric Stoves And Ranges (AREA)
Abstract
The invention discloses an oven based on intelligent temperature control heating and an intelligent temperature control heating method. According to the intelligent temperature control heating method, the controller is used for receiving the weight detection information and the temperature detection information of each temperature sensing unit, the heating parameters are set according to the weight detection information and the temperature detection information, and the heating power of each heating unit is respectively controlled according to the heating parameters, so that the heating temperature of each area is accurately controlled, and the pertinence and the accuracy of temperature control are improved.
Description
Technical Field
The invention relates to the technical field of electric appliances, in particular to an oven based on intelligent temperature control heating and an intelligent temperature control heating method.
Background
The oven is widely applied as a household appliance, however, the oven in the prior art can only perform overall and rough control on the heating temperature, and cannot perform precise control on the temperatures of different areas in the oven according to food materials, so that the temperature of the areas in the baking process of the oven is not uniform, the temperatures of parts of the areas are higher, the temperatures of parts of the areas are lower, the food materials are over-cooked and coked in the areas with higher temperatures, and the food materials are not fully cooked in the areas with lower temperatures, so that the eating mouthfeel is affected; in the oven in the prior art, the temperatures of all areas cannot be controlled in a targeted and fine manner, so that the food baking quality is influenced due to unbalanced heating temperature. Therefore, the oven in the prior art method has the problem that intelligent temperature control heating cannot be carried out.
Disclosure of Invention
The embodiment of the invention provides an oven based on intelligent temperature control heating and an intelligent temperature control heating method, and aims to solve the problem that the oven in the technical method cannot be intelligently heated in a temperature control mode.
In a first aspect, an embodiment of the present invention provides an intelligent temperature-controlled heating method, where the method is applied to a controller of an oven, and the method includes:
controlling the heating assembly to be connected with a power supply and heating according to preset power;
receiving temperature detection information of each temperature sensing unit and weight detection information of the weight sensing assembly;
analyzing the temperature detection information and the weight detection information according to a preset parameter analysis rule to determine corresponding heating parameters;
setting a corresponding comparison signal according to a heating temperature parameter in the heating parameters;
comparing the temperature detection information of each temperature sensing unit with the comparison signal to obtain comparison information corresponding to each temperature sensing unit;
determining power change information in each heating area according to the comparison information of each temperature sensing unit; the power change information comprises power increase and power decrease; each heating area corresponds to an area covered by one temperature sensing unit;
controlling the heating unit in each heating area according to the power change information to adjust the heating power according to the corresponding power change information;
and if the heating time parameter in the heating parameters is reached, controlling the heating assembly to be disconnected from the power supply.
In a second aspect, an embodiment of the present application further provides an oven based on intelligent temperature-controlled heating, where the oven employs the intelligent temperature-controlled heating method according to the first aspect, and includes an oven body and a temperature-controlled heating device disposed on one side of the oven body;
the box body is hollow to form a heating cavity; the bottom of the heating cavity is provided with a heating assembly; the top of the heating cavity is provided with a temperature sensing assembly; the heating assembly consists of a plurality of mutually independent heating units, and the temperature sensing assembly consists of a plurality of mutually independent temperature sensing units distributed at the top of the heating cavity;
the temperature control heating device comprises a shell connected with the box body, a setting assembly arranged on the outer side of the shell and a controller arranged in the shell;
at least one group of grill placing assemblies are arranged on the side wall of the heating cavity, one group of grill placing assemblies comprise two strip-shaped bulges which are oppositely arranged on the side walls of the two sides of the heating cavity, a grill is placed on the grill placing assemblies, and a weight sensing assembly is arranged on the lower side of one end, extending to the inside of the shell, of each strip-shaped bulge;
the controller is connected with the setting assembly, the heating assembly, the weight sensing assembly and the temperature sensing assembly, receives the setting information input by the setting assembly and the weight detection information of the weight sensing assembly, respectively receives the temperature detection information of each temperature sensing unit, and respectively controls the heating power of each heating unit according to the setting information, the weight detection information and the temperature detection information.
The embodiment of the invention provides an oven based on intelligent temperature control heating and an intelligent temperature control heating method. According to the oven based on intelligent temperature control heating, the controller is used for receiving the weight detection information and the temperature detection information of each temperature sensing unit, the heating parameters are set according to the weight detection information and the temperature detection information, and the heating power of each heating unit is respectively controlled according to the heating parameters, so that the heating temperature of each area is accurately controlled, and the pertinence and the accuracy of the heating temperature control in the oven are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is an overall structural diagram of an oven based on intelligent temperature-controlled heating according to an embodiment of the present invention;
FIG. 2 is a partial block diagram of an oven based on intelligent temperature-controlled heating according to an embodiment of the present invention;
FIG. 3 is another partial block diagram of an oven based on intelligent temperature-controlled heating according to an embodiment of the present invention;
FIG. 4 is a partial block diagram of an oven with intelligent temperature-controlled heating according to an embodiment of the present invention;
FIG. 5 is a partial block diagram of an oven incorporating smart temperature controlled heating according to an embodiment of the present invention;
FIG. 6 is a partial block diagram of a rear portion of an oven based on smart temperature controlled heating according to an embodiment of the present invention;
fig. 7 is a schematic overall circuit diagram of an oven based on intelligent temperature-controlled heating according to an embodiment of the present invention;
FIG. 8 is a partial circuit block diagram of an oven based on intelligent temperature-controlled heating according to an embodiment of the present invention;
fig. 9 is another partial circuit structure diagram of an oven based on intelligent temperature-controlled heating according to an embodiment of the present invention;
fig. 10 is a flowchart of a method of an intelligent temperature-controlled heating method according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.
Referring to fig. 1 to 9, as shown in the drawings, an embodiment of the present invention discloses an oven based on intelligent temperature-controlled heating, including an oven body 10, and a temperature-controlled heating device 20 disposed at one side of the oven body 10; the box body 10 is hollow to form a heating cavity 11; the bottom of the heating cavity 11 is provided with a heating assembly 12; the top of the heating cavity 11 is provided with a temperature sensing assembly 13; the heating assembly 12 is composed of a plurality of mutually independent heating units 121, and the temperature sensing assembly 13 is composed of a plurality of mutually independent temperature sensing units 131 distributed at the top of the heating cavity 11; the temperature control heating device 20 comprises a shell 21 connected with the box body 10, a setting component 22 arranged outside the shell 21 and a controller 23 arranged in the shell 21; at least one group of grill placing assemblies 15 are arranged on the side wall of the heating cavity 11, one group of grill placing assemblies 15 comprise two strip-shaped protrusions which are oppositely arranged on the side walls of the two sides of the heating cavity 11, a grill 16 is placed on the grill placing assemblies 15, and a weight sensing assembly 27 is arranged on the lower side of one end, extending into the shell 21, of each strip-shaped protrusion; the controller 23 is connected to the setting component 22, the heating component 12, the weight sensing component 27, and the temperature sensing component 13, the controller 23 receives the setting information input by the setting component 22 and the weight detection information of the weight sensing component 27, and respectively receives the temperature detection information of each of the temperature sensing units 131, and the controller 23 respectively controls the heating power of each of the heating units 121 according to the setting information, the weight detection information, and the temperature detection information.
Specifically, the user may control the opening and closing of the oven using the setting assembly 22, and may also input heating parameters via the setting assembly 22. The user can also not input the heating parameters, and the oven automatically determines the heating parameters by intelligently analyzing the weight detection information and the temperature detection information.
The sealing door 14 for sealing the heating cavity 11 is arranged on one side of the box body 10, the heating assembly 12 is arranged at the bottom of the heating cavity 11, at least one group of grill placing assemblies 15 is arranged on the side wall of the heating cavity 11, each group of grill placing assemblies 15 comprises two strip-shaped protrusions oppositely arranged on the side walls of the two sides of the heating cavity 11, and the grills 16 are placed on the grill placing assemblies 15. Weight sensing element 27 set up in the protruding extension of bar reaches the downside of the one end in the casing 21, the concrete setting mode is as shown in fig. 6, the subassembly 15 is placed to the gridiron in the protruding extension of bar extends to casing 21, weight sensing element 27 sets up and the protruding downside that extends to the one end in the casing 21 of bar, weight sensing element 27 can be sub-sensitive resistance, for further improving weight sensing element 27 and obtaining the accuracy of weight detection information, can set up heat insulating board 271 in weight sensing element 27's periphery, if at weight sensing element 27 orientation one side of heating chamber 11 sets up heat insulating board 271.
The heating assembly 12 disposed at the bottom of the heating chamber 11 is composed of a plurality of mutually independent heating units 121, the temperature sensing assembly 13 is disposed at the top of the heating chamber, and the temperature sensing assembly 13 is composed of a plurality of mutually independent temperature sensing units 131.
The temperature-controlled heating device 20 comprises a casing 21, a setting component 22 and a controller 23, the setting component 22 comprises a key, a knob and the like, a display screen 24 can be further arranged on the outer side of the casing 21 of the temperature-controlled heating device 20, and the display screen 24 can be used for displaying heating parameters set by a user and working state information of the oven. The user can control the opening and closing of the oven through the setting component 22, for example, the setting component 22 controls the oven to be electrically connected or disconnected, and the setting component 22 can also be used by the user to input heating parameters, including heating temperature parameters, heating time parameters, and the like.
The weight sensing assembly 27 can transmit the detected weight detection information to the controller 23; the controller 23 is connected to each of the temperature sensing units 131, each of the temperature sensing units 131 respectively transmits the detected temperature detection information to the controller 23, and the controller 23 analyzes the detected temperature detection information and the detected weight detection information to determine a heating parameter, wherein the heating parameter may be shared by all of the temperature sensing units 131, or corresponding heating parameters may be individually set for each of the temperature sensing units 131.
The controller 23 is further connected to each heating unit 121, and after the setting of the heating parameters is completed, the controller 23 controls the heating power of each heating unit 121 respectively according to the temperature detection information and the heating parameters of each temperature sensing unit 131, that is, controls each heating unit 121 to intelligently adjust the heating power, so that the temperature detection information of each temperature sensing unit 131 in the oven meets the requirements of the heating parameters.
In a specific embodiment, the temperature sensing unit 131 is an infrared temperature sensing unit. Specifically, a partition 132 is disposed at the top of the heating cavity 11 to partition each of the temperature sensing units 131. By setting the temperature sensing unit 131 as an infrared temperature sensing unit, the heating temperature parameters in each region can be determined by detecting the infrared rays received by each infrared temperature sensing unit in an infrared manner. For example, an infrared wave absorbing material 133 (e.g., a thermocouple that absorbs a specific wavelength) may be disposed on a surface layer of the infrared temperature sensing unit, and the infrared wave absorbing material 133 may absorb infrared rays of a specific wavelength and generate a change in electrical properties (e.g., a change in resistance value). As shown in fig. 5, in the present embodiment, a serpentine-shaped infrared absorbing material 133 is provided, and in a specific embodiment, the infrared absorbing material 133 is a short infrared wave absorbing material. By detecting the change of the electrical property of the infrared wave absorbing material 133, the heating temperature parameter in the region covered by the temperature sensing unit 131 corresponding to the infrared wave absorbing material 133 can be measured.
In order to further improve the accuracy of the temperature sensing units 131 in measuring the temperature in each region and avoid the influence of infrared rays in adjacent regions on the temperature sensing unit 131 in the current region, a partition plate 132 may be disposed around the temperature sensing unit 131, and the specific arrangement is as shown in fig. 5, the partition plate 132 may be used to partition the adjacent temperature sensing units 131, so that each temperature sensing unit 131 separately measures the heating temperature parameter in a fixed region and avoids the influence of the adjacent regions. In particular applications, the partition 132 may be made of a heat insulating material, such as a heat insulating resin material, or the partition 132 may be made of a reflective material coated on a substrate (such as silver coated on a substrate).
In a specific embodiment, the heating units 121 included in the heating assembly 12 are distributed in an array at the bottom of the heating cavity 11; the temperature sensing units 131 included in the temperature sensing assembly 13 are distributed at the top end of the heating cavity 11 in an array manner. Each of the heating units 121 corresponds to one of the temperature sensing units 131.
As shown in fig. 3, a plurality of heating units 121 may be disposed at the bottom of the heating cavity 11 in an array manner, thereby forming a heating assembly 12; in an embodiment of the present application, the heating units 121 are disposed in a square array, and the specific disposition is as shown in fig. 3, and 36 heating units 121 are disposed in a 6 × 6 manner in fig. 3. Similarly, the temperature sensing units 131 may be arranged at the top end of the heating cavity 11 in an array manner, so as to constitute the temperature sensing assembly 13; in an embodiment of the present application, the temperature sensing units 131 are arranged in a square array, as shown in fig. 4, and 36 temperature sensing units 131 are arranged in a 6 × 6 manner in fig. 4. In a specific setting, a plurality of heating units 121 may be set to correspond to one temperature sensing unit 131, and if four heating units 121 are set to correspond to one temperature sensing unit 131, and an area covered by one temperature sensing unit 131 corresponds to heating areas of four heating units 121, temperature detection information obtained by one temperature sensing unit 131 may be used to perform heating power control on the corresponding four heating units 121. Or one heating unit 121 is arranged to correspond to a plurality of temperature sensing units 131, and if one heating unit 121 is arranged to correspond to four temperature sensing units 131, the areas covered by the four temperature sensing units 131 correspond to the heating areas of the four heating units 121, and the temperature detection information acquired by the four temperature sensing units 131 shares the heating power control for the corresponding one heating unit 121.
One heating unit 121 may also be arranged to correspond to one temperature sensing unit 131, for example, in an embodiment of the present application, 36 temperature sensing units 131 and 36 heating units 121 are arranged, and each temperature sensing unit 131 corresponds to one heating unit 121, at this time, the temperature detection information acquired by one temperature sensing unit 131 may be used to perform heating power control on the corresponding heating unit 121.
In a specific embodiment, a control circuit board 25 is disposed in the housing 21, and the controller 23 is mounted on the control circuit board 25; a heat dissipation fan 26 is disposed on one side of the housing 21, and a heat dissipation through hole 261 is disposed on the top of the housing 21. Specifically, the air outlet of the heat dissipation fan 26 faces the inside of the housing 21, and the heat dissipation fan 26 is disposed at the rear side of the temperature control heating device 20. The heating unit 121 in the heating assembly 12 needs to be controlled by the controller 23, and the heating assembly 12 generates a large amount of heat during the operation of the oven. It is therefore possible to provide a circuit board 25 in the housing 21 and to arrange the controller 23 and other circuit components on the circuit board 25; meanwhile, the heat dissipation fan 26 is arranged on one side of the shell 21, the heat dissipation through hole is formed in the top 21 of the shell, and various circuit components arranged on the circuit board 25 are dissipated through the heat dissipation fan 26, so that the controller 23 and other circuit components are prevented from being affected by high temperature generated by the oven when the oven works, and the accuracy of controlling the heating power of the heating unit 121 through the controller 23 is improved. The heat dissipation fan 26 can blow air into the casing 21, generate air flow through the heat dissipation fan 26 and conduct heat inside the casing 21 to the outside of the casing 21, and the hot air is exhausted through the heat dissipation through hole 261; the hot air in the casing 21 may be drawn out by the heat dissipation fan 26, and at this time, the external air flows into the casing 21 through the heat dissipation through hole 261, and the air flow and the circuit components inside the casing 21 generate a heat exchange effect, thereby transferring the heat inside the casing 21 to the outside of the casing 21.
Specifically, the air outlet of the heat dissipation fan 26 faces the inside of the casing 21, the heat dissipation fan 26 can blow air into the casing 21, the heat dissipation fan 26 generates air flow and transfers the heat inside the casing 21 to the outside of the casing 21, after the air flow is heated, the hot air moves upwards and is discharged outwards from the heat dissipation through hole 261 arranged at the top of the casing 21, and in the process, the heat can be dissipated by utilizing the self-lifting force of the hot air, so that the heat dissipation efficiency in the casing 21 is further improved. Specifically, the heat dissipation fan 26 may be disposed at the rear side of the temperature-controlled heating device 20, and the heat dissipation fan 26 is disposed close to the bottom of the casing 21, so as to suck air from the rear side into the casing 21 for heat dissipation, thereby facilitating the operation of the oven by the user; the rear side is typically close to the wall when the user is using the oven, so this arrangement also avoids water splashing into the interior of the housing 21 from the right side of the housing 21.
In a specific embodiment, the controller 23 includes a comparing circuit 231, a control chip 232, and a blending circuit 233; the comparison circuit 231 comprises a plurality of comparison units 234, and a first signal input end B1 of each comparison unit 234 is respectively connected with a corresponding one of the temperature sensing units 131; a second signal input end B2 of each comparing unit 234 is connected to a comparing signal output end U of the control chip 232, and a signal output end B3 of each comparing unit 234 is connected to a corresponding signal input end S of the control chip 232; the adjusting circuit 233 comprises a plurality of adjusting units 235, each of the adjusting units 235 is connected in series with a corresponding one of the heating units 121; each of the allocating units 235 includes a plurality of resistors with sequentially increasing resistance values, and the plurality of resistors are sequentially connected in series; two ends of each resistor are connected in parallel with a control switch, and each control switch is connected with a corresponding control output end R on the control chip 232 to receive an input control signal. Wherein, the resistance values of the plurality of resistors included in each of the adjusting units 235 are sequentially increased by multiple times.
In order to improve the accuracy of controlling the heating power of the heating unit 121, in the embodiment of the present application, the adjusting unit 235 connected in series with the heating unit 121 is provided, so as to adjust the heating power of the heating unit 121 by adjusting the resistance value of the adjusting unit 235. Specifically, the control chip 232 outputs a control signal to adjust the resistance of each allocating unit 235 in the allocating circuit 233, and when the heating power of the heating unit 121 needs to be increased and the allocating unit 235 can be adjusted to reduce the resistance, the corresponding control signal can be output to reduce the resistance of the corresponding allocating unit 235; further, the control signal can be outputted to adjust the resistance of the adjusting unit 235 to zero, so that the heating unit 121 connected in series with the adjusting unit 235 outputs the maximum heating power. When the heating power of the heating unit 121 needs to be reduced, the adjusting unit 235 can be adjusted to increase the resistance thereof, and then the corresponding control signal can be output to increase the resistance of the corresponding adjusting unit 235.
Specifically, as shown in fig. 8, the comparison signal output end U of the control chip 232 is connected to the second signal input end B2 of each comparison unit 234, and when the control chip 232 receives the heating parameters, a comparison signal corresponding to the heating temperature parameter can be generated according to the heating temperature parameter in the heating parameters, where the heating temperature parameter is a digital signal, the comparison signal is an analog signal, that is, the heating temperature parameter is a value, and the comparison signal is a voltage value signal corresponding to the heating temperature parameter, the voltage value of the comparison signal varies with the heating temperature parameter, and the variation of the voltage value with the heating temperature parameter can be linear variation or curve variation close to the linear variation; if the heating temperature parameter is higher, a comparison signal with a larger voltage value is correspondingly generated, and if the heating temperature parameter is lower, a comparison signal with a smaller voltage value is correspondingly generated. The end of the adjusting unit 235 not connected to the heating unit 121 may be connected to the power source VSS, and the end of the heating unit 121 not connected to the adjusting unit 235 is grounded.
Each temperature sensing unit 131 is connected to a first signal input end B1 of a comparing unit 234, that is, each comparing unit 234 corresponds to one temperature sensing unit 131, one comparing unit 234 can compare temperature detection information of one temperature sensing unit 131 with a comparison signal, the temperature detection information is also a voltage value signal, the comparing unit 234 directly compares two voltage values corresponding to the temperature detection information and the comparison signal to obtain comparison information corresponding to the temperature sensing unit 131, for example, if the temperature detection information is greater than the comparison signal, the obtained comparison information is a high level signal, and if the temperature detection information is not greater than the comparison signal, the obtained comparison information is a low level signal.
The signal output end B3 of each comparing unit 234 is connected to a corresponding signal input end S of the control chip 232, and the control chip 232 obtains the comparison signal output by each comparing unit 234 through the signal output end B3 through the signal input end S. After receiving the comparison signal of each comparison unit 234, the control chip 232 performs forward counting or backward counting according to the level signal of the comparison signal. Specifically, the control chip 232 performs forward counting when the comparison signal received by a certain comparison unit 234 is a high level signal, performs backward counting when the received comparison signal is a low level signal, and updates the count value of each comparison unit 234 in real time according to the counting condition. Meanwhile, each control output end R of the control chip 232 is connected to a corresponding allocating unit 235 in the allocating circuit 233, the current count value corresponding to each temperature sensing unit 131 of the control chip 232 generates a corresponding control signal, and the control signal is output to the allocating unit 235 corresponding to the temperature sensing unit 131 through the corresponding control output end R, and the allocating unit 235 adjusts the resistance value according to the received control signal. If the control signal correspondingly includes a count value of 30, the corresponding adjusting unit 235 is controlled to adjust the resistance value to 30 ohms.
The specific circuit structure of the allocating unit 235 is shown in fig. 9, as shown in the figure, the allocating units 235 each include a plurality of resistors with sequentially increasing resistance values, and the plurality of resistors included in each allocating unit 235 are sequentially connected in series; two ends of each resistor are connected in parallel with a control switch, and each control switch is connected with a corresponding control output end R on the control chip 232 to receive the input control signal. The control process for a certain allocation unit 235 is that when a control switch is turned on, a resistor connected in parallel with the control switch is short-circuited, and at this time, the resistor corresponding to the control switch does not act; when the control switch is turned off, the resistor connected in parallel with the control switch is turned on, and at the moment, the resistor corresponding to the control switch acts, that is, current flows through the resistor corresponding to the control switch. Specifically, the control switch may be a transistor or a MOS transistor (field effect transistor), such as an NPN-type transistor, or an N-MOS transistor.
By setting the plurality of resistors with step-change resistance values in the allocating unit 235, the allocating unit 235 can be combined to have a plurality of resistance values, theoretically, the number of the resistance values included in the allocating unit 235 is in positive correlation with the types of the resistors included therein, and when the resistance values of the resistors included in the allocating unit 235 are not equal, the allocating unit 235 can have at most 2N of the plurality of resistance values, where N is the total number of the resistors included therein.
Specifically, the resistances of the resistors in the allocating unit 235 may be sequentially increased by multiple times, for example, the resistance of the rightmost resistor is 1 ohm, the resistance of the left adjacent resistor is 2 ohm, and the resistance of the left adjacent resistor is 4 ohm …. The number of resistors included in the adjusting unit 235 can be flexibly adjusted according to the usage requirement. In a specific method, the resistance value of the allocating unit 235 can be adjusted by a binary control signal, and after the on/off of the control switch in the corresponding allocating unit 235 is adjusted by the control signal, the resistance value of the allocating unit 235 corresponds to the binary number in the control signal.
The embodiment of the invention also discloses an intelligent temperature control heating method which is applied to the controller in the oven based on intelligent temperature control heating in the embodiment, and as shown in fig. 10, the intelligent temperature control heating method comprises the steps of S110-S180.
And S110, controlling the heating component to be connected with a power supply and heating according to preset power.
When the oven is powered on to work, a corresponding switch-on instruction can be sent to the power switch through the control chip to control the heating assembly to be connected with a power supply, and if a user does not set corresponding heating parameters through the setting assembly, each heating unit is controlled to heat according to preset power; if the user sets the corresponding heating parameters through the setting assembly, each heating unit can be controlled to heat according to the heating parameters set by the user, and the following method steps mainly aim at the condition that the user does not set the heating parameters. Specifically, a power switch is further arranged between the allocation unit and the power supply, and a control chip in the controller is connected with the power switch to send an on-off instruction to the power switch through the control chip, so that the heating assembly is controlled to be integrally connected to the power supply or disconnected from the power supply. The control chip can control each heating unit to heat according to preset power, and the heating power of each heating unit is equal at the moment.
S120, receiving temperature detection information of each temperature sensing unit and weight detection information of the weight sensing assembly.
The control chip can receive weight detection information of the weight sensing assembly and temperature detection information of each temperature sensing unit, specifically, the weight detection information is a weight value, the unit is kg, and the weight detection information comprises the total weight of food materials and the grill; the temperature detection information is a temperature signal value detected by each temperature sensing unit.
S130, analyzing the temperature detection information and the weight detection information according to a preset parameter analysis rule to determine corresponding heating parameters.
After the control chip acquires the temperature detection information and the weight detection information, the control chip can analyze the temperature detection information and the weight detection information according to the parameter analysis rule so as to acquire heating parameters corresponding to the temperature detection information and the weight detection information, and the acquired heating parameters are matched with the temperature detection information and the weight detection information, wherein the heating parameters comprise heating temperature parameters and heating time parameters, the unit of the heating temperature parameters is DEG C, and the unit of the heating time parameters is minutes.
In a specific embodiment, step S130 includes the following steps: judging whether the temperature detection information of each temperature sensing unit is larger than a signal threshold in a parameter analysis rule or not so as to obtain the sensing number of the temperature sensing units of which the temperature detection information is not larger than the signal threshold; acquiring corresponding heating parameters from a mapping table of the parameter analysis rule according to the sensing quantity and the weight detection information; the mapping table comprises mapping relations among various heating parameters, induction quantity and weight detection information.
Specifically, it can be determined whether the temperature detection information of each temperature sensing unit is greater than a signal threshold, and if so, it indicates that the ray (e.g., infrared ray) emitted by the heating unit can be directly received by the corresponding temperature sensing unit, that is, the temperature sensing unit is not shielded by food material, and no food material is placed under the temperature sensing unit; if the temperature detection information is not greater than the signal threshold, it indicates that the rays emitted by the heating unit cannot be directly received by the corresponding temperature sensing unit, that is, the temperature sensing unit is shielded by food materials, and the food materials are placed under the temperature sensing unit. The sensing quantity of the temperature sensing units with the temperature detection information not larger than the signal threshold value can be obtained by judging the temperature detection information, the sensing quantity corresponds to the spread area of the food material on the grill, and the sensing quantity is larger if the spread area of the food material on the grill is larger.
The parameter analysis rule further comprises a mapping table, wherein the mapping table comprises a plurality of heating parameters, each heating parameter corresponds to one group of mapping relations, and each group of mapping relations comprises a heating parameter, an induction quantity range and a weight detection range.
For example, part of the information in the mapping table is shown in table 1.
TABLE 1
And according to the acquired sensing quantity and the matching condition of the weight detection information and each mapping relation, acquiring a group of heating parameters of the mapping relation matched with the sensing quantity and the weight detection information. At this time, the temperature sensing units share the heating parameters obtained by matching.
In another specific embodiment, step S130 includes the steps of: judging whether the temperature detection information of each temperature sensing unit is larger than a signal threshold in a parameter analysis rule or not so as to obtain the sensing number of the temperature sensing units of which the temperature detection information is not larger than the signal threshold; calculating the induction quantity and the weight detection information according to a time calculation formula in the parameter analysis rule to obtain a corresponding heating time parameter; carrying out gradient grading on the temperature detection information of each temperature sensing unit according to the temperature gradient in the parameter analysis rule to obtain corresponding gradient grading information; calculating the induction quantity, the weight detection information and the gradient grading information of each temperature induction unit according to a temperature calculation formula in the parameter analysis rule to obtain a heating temperature parameter corresponding to each temperature induction unit; and combining the heating time parameters and the heating temperature parameters corresponding to each temperature sensing unit to obtain the heating parameters.
In another embodiment, the sensing number of the temperature sensing units not greater than the signal threshold may be obtained, and then the sensing number and the weight detection information are calculated according to a time calculation formula, so as to obtain the corresponding heating time parameter. Specifically, the time calculation formula may be as shown in formula (1).
Wherein, T is a calculated heating time parameter, R is an induction number, M is weight detection information, and R and M are preset parameter values in a formula, such as R =5, M =0.5.
Then, the temperature detection information of each temperature sensing unit can be graded according to the temperature gradient in the parameter analysis rule, specifically, the temperature gradient includes a plurality of gradient grades and a temperature signal value range corresponding to each gradient grade, and the gradient grade of each temperature sensing unit can be determined according to the temperature signal value range to which the temperature detection information of each temperature sensing unit belongs. The gradient grading can be represented in a numerical form, such as 1, 2, 3 … …, and the larger the temperature signal value of the temperature detection information is, the smaller the numerical value of the gradient grading is; the smaller the temperature signal value, the larger the value of the gradient step.
The sensing quantity, the weight detection information and the gradient grading information of each temperature sensing unit can be calculated according to a temperature calculation formula to obtain heating temperature parameters respectively corresponding to each temperature sensing unit, and specifically, the temperature calculation formula can be represented by a formula (2).
Wherein, t i M is weight detection information, r is induction number, f is heating temperature parameter of the ith temperature induction unit obtained by calculation i For gradient grading of the ith temperature sensing unit, P is a parameter value preset in the formula, such as P =200.
The heating time parameter and the heating temperature parameter corresponding to each temperature sensing unit can be obtained through the method, and the heating time parameter and the obtained plurality of heating temperature parameters are combined to obtain the heating parameters.
S140, setting a corresponding comparison signal according to the heating temperature parameter in the received heating parameters.
When a control chip in the controller receives the heating parameters, a comparison signal corresponding to the heating temperature parameters can be generated according to the heating temperature parameters in the heating parameters, wherein the heating temperature parameters are digital signals, the comparison signal is analog signals, namely the heating temperature parameters are a numerical value, and the comparison signal is a voltage value signal corresponding to the heating temperature parameters.
Specifically, the comparison signals of each temperature sensing unit can be respectively set according to the heating temperature parameters corresponding to each temperature sensing unit in the heating parameters, that is, the comparison signals corresponding to each temperature sensing unit are respectively generated according to the heating temperature parameters corresponding to each temperature sensing unit, and the comparison signals corresponding to each temperature sensing unit are respectively set, so that the comparison signals of the temperature sensing units can be differentially set, and more refined heating power control can be realized.
S150, comparing the temperature detection information of each temperature sensing unit with the comparison signal to obtain comparison information corresponding to each temperature sensing unit.
The comparison unit can compare the temperature detection information of one temperature sensing unit with the comparison signal, the temperature detection information is also a voltage value signal, and the comparison unit directly compares the temperature detection information with two voltage values corresponding to the comparison signal to obtain the comparison information corresponding to the temperature sensing unit.
S160, determining power change information in each heating area according to the comparison information of each temperature sensing unit; the power change information comprises increasing power and decreasing power; each heating area corresponds to an area covered by one temperature sensing unit.
Each temperature sensing unit corresponds to one heating area, or a plurality of temperature sensing units correspond to one heating area, and one or more heating units can be contained in the heating area. In a specific application process, one temperature sensing unit corresponds to one heating area, and one heating area corresponds to one heating unit; or one temperature sensing unit corresponds to one heating area, and one heating area corresponds to a plurality of heating units; the plurality of temperature sensing units may correspond to one heating region (at this time, the temperature detection information of the plurality of temperature sensing units may be obtained and an average value may be calculated, and the average value may be compared with a set comparison signal to obtain a comparison result), and one heating region corresponds to one heating unit. The power change information includes increasing power or decreasing power, where increasing power corresponds to decreasing the resistance of the allocation unit, and decreasing power corresponds to increasing the resistance of the allocation unit.
S170, controlling the heating units in each heating area according to the power change information to adjust the heating power according to the corresponding power change information.
Controlling the heating units in the heating area corresponding to the power change information to perform power adjustment according to the power change information, if the power change information is power increase, performing power increase adjustment on the heating units in the heating area corresponding to the power change information, and performing reduction adjustment on the resistance value of the blending unit corresponding to each heating unit in the heating area, where the specific method for performing reduction adjustment on the resistance value of the blending unit is described in detail in the above embodiments; if the power change information is a decrease power, the heating units in the heating area corresponding to the power change information are adjusted to decrease the heating power, the resistance value of the blending unit corresponding to each heating unit in the heating area can be increased and adjusted, and the specific method for increasing and adjusting the resistance value of the blending unit is described in detail in the above embodiments.
And S180, if the heating time parameter in the heating parameters is reached, controlling the heating assembly to be disconnected from the power supply.
If the control chip judges that the heating time parameter in the heating parameters is reached, a corresponding disconnection instruction is sent to the power switch through the control chip so as to control the heating assembly to be disconnected from the power supply.
The invention provides an oven based on intelligent temperature control heating and an intelligent temperature control heating method. According to the oven based on intelligent temperature control heating, the controller receives the weight detection information and the temperature detection information of each temperature sensing unit, the heating parameters are set according to the weight detection information and the temperature detection information, and the heating power of each heating unit is controlled according to the heating parameters, so that the heating temperature of each area is accurately controlled, and the pertinence and the accuracy of the heating temperature control in the oven are improved.
While the invention has been described with reference to specific embodiments, 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. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. An intelligent temperature control heating method is applied to a controller of an oven, and comprises the following steps:
controlling a heating component of the oven to be connected with a power supply and heating according to preset power;
receiving temperature detection information of each temperature sensing unit and weight detection information of the weight sensing assembly;
analyzing the temperature detection information and the weight detection information according to a preset parameter analysis rule to determine corresponding heating parameters;
setting a corresponding comparison signal according to a heating temperature parameter in the heating parameters;
comparing the temperature detection information of each temperature sensing unit with the comparison signal to obtain comparison information corresponding to each temperature sensing unit;
determining power change information in each heating area according to the comparison information of each temperature sensing unit; the power change information comprises power increase and power decrease; each heating area corresponds to an area covered by one temperature sensing unit;
controlling the heating unit in each heating area according to the power change information to adjust the heating power according to the corresponding power change information;
if the heating time parameter in the heating parameters is reached, controlling the heating assembly to be disconnected from the power supply;
the analyzing the temperature detection information and the weight detection information according to a preset parameter analysis rule to determine corresponding heating parameters includes:
judging whether the temperature detection information of each temperature sensing unit is larger than a signal threshold in a parameter analysis rule or not so as to obtain the sensing number of the temperature sensing units of which the temperature detection information is not larger than the signal threshold;
acquiring corresponding heating parameters from a mapping table of the parameter analysis rule according to the sensing quantity and the weight detection information; the mapping table comprises mapping relations among various heating parameters, induction quantity and weight detection information.
2. The intelligent temperature-controlled heating method according to claim 1, wherein the analyzing the temperature detection information and the weight detection information according to preset parameter analysis rules to determine corresponding heating parameters comprises:
judging whether the temperature detection information of each temperature sensing unit is larger than a signal threshold in a parameter analysis rule or not so as to obtain the sensing number of the temperature sensing units of which the temperature detection information is not larger than the signal threshold;
calculating the induction quantity and the weight detection information according to a time calculation formula in the parameter analysis rule to obtain corresponding heating time parameters;
carrying out gradient grading on the temperature detection information of each temperature sensing unit according to the temperature gradient in the parameter analysis rule to obtain corresponding gradient grading information;
calculating the induction quantity, the weight detection information and the gradient grading information of each temperature induction unit according to a temperature calculation formula in the parameter analysis rule to obtain a heating temperature parameter corresponding to each temperature induction unit;
and combining the heating time parameters and the heating temperature parameters corresponding to each temperature sensing unit to obtain the heating parameters.
3. The intelligent temperature-controlled heating method according to claim 2, wherein the setting of the corresponding comparison signal according to the heating temperature parameter of the heating parameters comprises:
and respectively setting comparison signals with each temperature induction unit according to the heating temperature parameters corresponding to each temperature induction unit in the heating parameters.
4. An oven based on intelligent temperature-controlled heating, which is characterized in that the oven applies the intelligent temperature-controlled heating method according to any one of claims 1 to 3, and comprises an oven body and a temperature-controlled heating device arranged on one side of the oven body;
the box body is hollow to form a heating cavity; the bottom of the heating cavity is provided with a heating assembly; a temperature sensing assembly is arranged at the top of the heating cavity; the heating assembly consists of a plurality of mutually independent heating units, and the temperature sensing assembly consists of a plurality of mutually independent temperature sensing units distributed at the top of the heating cavity;
the temperature control heating device comprises a shell connected with the box body, a setting assembly arranged on the outer side of the shell and a controller arranged in the shell;
at least one group of grill placing assemblies are arranged on the side wall of the heating cavity, each group of grill placing assemblies comprises two strip-shaped protrusions oppositely arranged on the side walls of the two sides of the heating cavity, a grill is placed on each grill placing assembly, and each weight sensing assembly is arranged on the lower side of one end, extending to the inside of the shell, of each strip-shaped protrusion;
the controller is connected with the setting assembly, the heating assembly, the weight sensing assembly and the temperature sensing assembly, receives setting information input by the setting assembly and weight detection information of the weight sensing assembly, and respectively receives temperature detection information of each temperature sensing unit, and respectively controls heating power of each heating unit according to the setting information, the weight detection information and the temperature detection information;
the controller comprises a comparison circuit, a control chip and a blending circuit;
the comparison circuit comprises a plurality of comparison units, and a first signal input end of each comparison unit is respectively connected with one corresponding temperature sensing unit;
the second signal input end of each comparison unit is connected with the comparison signal output end of the control chip, and the signal output end of each comparison unit is connected with a corresponding signal input end on the control chip;
the allocation circuit comprises a plurality of allocation units, and each allocation unit is connected with one corresponding heating unit in series;
each allocation unit comprises a plurality of resistors with sequentially increased resistance values, and the plurality of resistors are sequentially connected in series; and two ends of each resistor are connected with a control switch in parallel, and each control switch is connected with a corresponding control output end on the control chip to receive an input control signal.
5. The oven of claim 4, wherein the temperature sensing unit is an infrared temperature sensing unit.
6. The oven based on intelligent temperature-controlled heating of claim 4 or 5, wherein a partition for partitioning each temperature sensing unit is arranged at the top of the heating cavity.
7. The oven of claim 6, wherein the heating elements of the heating assembly are distributed at the bottom of the heating cavity in an array; the temperature sensing units contained in the temperature sensing assembly are distributed at the top end of the heating cavity in an array mode.
8. The oven of claim 7, wherein the resistance values of the plurality of resistors included in each of the configuration units are sequentially increased by multiples.
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| CN117193434B (en) * | 2023-11-08 | 2024-01-30 | 广州市赛思达机械设备有限公司 | Heating method, device, equipment and medium of commercial box-type electric oven |
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