Intelligent frequency conversion control system and method for gas steam cabinet

Abstract

The present invention discloses an intelligent variable frequency control system and method for a gas steam cabinet, and relates to the field of intelligent control and regulation technology. First, set cooking parameters, obtain parameters of cooking mode and receive heating instructions, implement cooking control based on these parameters, divide time periods to monitor the cooking process, analyze the variable frequency control demand index, and determine whether variable frequency control is needed; after the cooking conditions are met, continuously monitor temperature data and determine whether to enter the insulation mode, and at the same time monitor the temperature, air pressure and gas leakage in the steam cabinet to ensure safety and issue an early warning. The frequency conversion control method can improve cooking efficiency, which can not only significantly improve cooking efficiency and food quality, but also effectively save energy, reduce gas consumption, and ensure safety through real-time monitoring to reduce accidental risks.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent control and regulation, and in particular to an intelligent frequency conversion control system and method for a gas steam cabinet. Background Art

[0002] The intelligent frequency conversion control system of the gas steam cabinet realizes precise regulation of gas supply and optimizes heating efficiency and temperature control by integrating frequency conversion technology and intelligent control algorithms. By real-time monitoring and adjustment of gas flow, more precise temperature control can be achieved, ensuring the required heat and humidity at different cooking stages, achieving a more uniform heating effect and improving energy utilization efficiency.

[0003] For example, the invention patent with announcement number CN113778012B announces a method for controlling the steam usage of a silk drying machine. Flow meters are installed on the hot air steam pipe and the drum wall steam pipe of the silk drying machine, and the steam flow is collected in real time through the PLC. The calculus equation is then used to integrate the real-time steam usage and cumulative steam usage, and then the average steam flow of each preheating batch, the preheating completion condition judgment, the preheating time, the total preheating steam usage record, and the preheating stage early warning alarm are calculated; and the average steam flow of each production batch, the production completion judgment, the production time and the total production steam usage record, and the production stage early warning alarm are calculated.

[0004] For example, the invention patent with announcement number CN107340736B announces a control system for a steam cabinet, including a power supply circuit, a single-chip microcomputer control circuit, a solenoid valve drive circuit, a proportional valve drive circuit, an ignition drive circuit, a DC brushless motor drive circuit, a temperature / gear / gate detection circuit, a flame detection circuit, a water level detection circuit and other auxiliary circuits. The proportional valve driven by the proportional valve drive circuit and the DC brushless motor driven by the DC brushless motor drive circuit cooperate to fully premix the gas and air and then supply gas to the burner.

[0005] Based on the above findings, the existing technical solutions have problems such as inadequate evaluation of the steam cabinet and inaccurate adjustment, which may lead to waste of resources and loss of the steam cabinet, thereby affecting the food production efficiency. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides an intelligent frequency conversion control system and method for a gas steam cabinet, which solves the problems designed in the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an intelligent frequency conversion control system and method for a gas steam cabinet, including a parameter acquisition module for acquiring cooking parameters of a cooking mode of the gas steam cabinet.

[0008] The data monitoring and analysis module is used to receive heating instructions, control the gas steam cabinet to cook based on cooking parameters, set monitoring time periods, monitor and analyze the cooking process, and obtain the frequency conversion control demand index of the gas steam cabinet within each monitoring time period.

[0009] The frequency conversion control module is used to perform frequency conversion control on the gas steam cabinet according to the frequency conversion control demand index of the gas steam cabinet in each monitoring time period, and to perform residual heat control on the gas steam cabinet after cooking is completed.

[0010] The safety warning module is used to monitor the steam temperature and pressure in the gas steam cabinet and the gas concentration in the gas steam cabinet, and to issue safety warnings.

[0011] Furthermore, the cooking parameters of the cooking mode of the gas steam cabinet include: cooking time, reference cooking temperature, reference cooking humidity, and reference cooking pressure.

[0012] Furthermore, cooking parameters of the cooking mode of the gas steam cabinet are received, food in the gas steam cabinet is cooked, a monitoring time period is set, and the maximum steam temperature, the minimum steam temperature, the maximum steam humidity, the minimum steam humidity, the maximum steam pressure and the minimum steam pressure in the gas steam cabinet are monitored during each monitoring time period.

[0013] The differences between the highest steam temperature and the lowest steam temperature, the highest steam humidity and the lowest steam humidity, and the highest steam pressure and the lowest steam pressure in the gas steam cabinet in each monitoring time period are calculated respectively to obtain the temperature difference, humidity difference and pressure difference in the steam cabinet in each monitoring time period.

[0014] Furthermore, the maximum steam temperature in the gas steam cabinet in each monitoring time period, the reference cooking temperature and the temperature difference in the gas steam cabinet in each monitoring time period are analyzed to obtain the steam temperature evaluation value of the gas steam cabinet in each monitoring time period.

[0015] The maximum steam humidity in the gas steam cabinet during each monitoring period, the reference cooking humidity and the temperature difference in the gas steam cabinet during each monitoring period are analyzed to obtain the steam humidity evaluation value of the gas steam cabinet during each monitoring period.

[0016] The maximum steam pressure in the gas steam cabinet during each monitoring time period, the reference cooking pressure and the pressure difference in the gas steam cabinet during each monitoring time period are analyzed to obtain the steam pressure evaluation value of the gas steam cabinet during each monitoring time period.

[0017] Furthermore, the steam temperature evaluation value, the steam humidity evaluation value and the steam pressure evaluation value of the gas steam cabinet in each monitoring time period are extracted, and the frequency conversion control demand index of the gas steam cabinet in each monitoring time period is obtained by processing.

[0018] Furthermore, the frequency conversion control demand index of the gas steam cabinet in each monitoring time period is compared with the frequency conversion control demand index safety threshold of the gas steam cabinet stored in the database.

[0019] If the frequency conversion control demand index of the gas steam cabinet within a monitoring time period is higher than the frequency conversion control demand index safety threshold of the gas steam cabinet stored in the database, the steam temperature evaluation value of the gas steam cabinet within the monitoring time period is compared with the first threshold of the steam temperature evaluation value of the gas steam cabinet. If the steam temperature evaluation value of the gas steam cabinet within the monitoring time period is higher than the first threshold of the steam temperature evaluation value of the gas steam cabinet, the opening of the gas valve of the gas steam cabinet is frequency-controlled. If it is lower than or equal to the first threshold of the steam temperature evaluation value of the gas steam cabinet, there is no need to adjust the gas valve of the gas steam cabinet.

[0020] The steam humidity evaluation value of the gas steam cabinet during the monitoring time period is compared with the second threshold value of the steam humidity evaluation value of the gas steam cabinet. If the steam humidity evaluation value of the gas steam cabinet during the monitoring time period is higher than the second threshold value of the steam humidity evaluation value of the gas steam cabinet, the water intake of the gas steam cabinet is frequency-controlled. If it is lower than or equal to the second threshold value of the steam humidity evaluation value of the gas steam cabinet, there is no need to adjust the water intake of the steam cabinet.

[0021] The steam pressure evaluation value of the gas steam cabinet during the monitoring time period is compared with the third threshold value of the steam pressure evaluation value of the gas steam cabinet. If the steam pressure evaluation value of the gas steam cabinet during the monitoring time period is higher than the third threshold value of the steam pressure evaluation value of the gas steam cabinet, the opening of the steam valve of the gas steam cabinet is controlled by frequency conversion. If it is lower than or equal to the third threshold value of the steam pressure evaluation value of the gas steam cabinet, there is no need to adjust the steam valve of the gas steam cabinet.

[0022] If the frequency conversion control demand index of the gas steam cabinet in a certain monitoring time period is lower than or equal to the frequency conversion control demand index safety threshold of the gas steam cabinet stored in the database, frequency conversion control is not required.

[0023] After the frequency conversion control is completed, the frequency conversion control demand index of the gas steam cabinet in the monitoring time period is recalculated and compared with the frequency conversion control demand index safety threshold of the gas steam cabinet stored in the database to determine whether the frequency conversion control is completed.

[0024] The gas valve of the gas steam cabinet, the water intake of the steam cabinet and the number of times the steam valve is adjusted are recorded. When the number of adjustments reaches the specified number of adjustments, an early warning prompt is issued.

[0025] Furthermore, after the cooking process is completed, the gas valve of the gas steam cabinet is closed, and the steam temperature inside the gas steam cabinet is continuously monitored. If the steam temperature inside the gas steam cabinet is detected to be lower than a preset temperature threshold, the heat preservation mode will be automatically entered.

[0026] Furthermore, when it is monitored that the steam temperature in the gas steam cabinet exceeds the steam temperature safety threshold of the gas steam cabinet, the gas supply is reduced and an alarm is sounded at the same time; when it is monitored that the steam pressure in the gas steam cabinet exceeds the steam pressure safety threshold of the gas steam cabinet, the gas supply is reduced, the water intake of the steam cabinet is increased and an alarm is sounded at the same time; when it is monitored that the gas concentration of the gas steam cabinet exceeds the gas concentration safety threshold of the gas steam cabinet, the gas valve is closed and an alarm is sounded.

[0027] Furthermore, the specific analysis conditions of the frequency conversion control demand index of the gas steam cabinet in each monitoring time period are as follows:

[0028] ;

[0029] In the formula, represents the frequency conversion control demand index of the gas steam cabinet in the i-th monitoring time period, represents the steam temperature evaluation value of the gas steam cabinet during the i-th monitoring period, represents the steam humidity evaluation value of the gas steam cabinet during the i-th monitoring period, represents the steam pressure evaluation value of the gas steam cabinet during the i-th monitoring period, Indicates the weight factor corresponding to the set steam temperature evaluation value of the gas steam cabinet, Indicates the weight factor corresponding to the steam humidity assessment value of the set gas steam cabinet, It represents the weight factor corresponding to the steam pressure evaluation value of the set gas steam cabinet, e is a natural constant, , m represents the total number of monitoring time periods.

[0030] A second aspect of the present invention provides an intelligent frequency conversion control method for a gas steam cabinet, comprising: obtaining cooking parameters of a cooking mode of the gas steam cabinet.

[0031] Receive heating instructions, control the gas steam cabinet to cook based on cooking parameters, set monitoring time periods, monitor and analyze the cooking process, and obtain the frequency conversion control demand index of the gas steam cabinet within each monitoring time period.

[0032] According to the frequency conversion control demand index of the gas steam cabinet in each monitoring time period, the gas steam cabinet is frequency-controlled, and after cooking is completed, the gas steam cabinet is subjected to residual heat control.

[0033] Monitor the steam temperature, pressure and gas concentration in the gas steam cabinet, and issue safety warnings.

[0034] The present invention has the following beneficial effects:

[0035] (1) The present invention discloses an intelligent variable frequency control system and method for a gas steam cabinet. First, the cooking parameters are set, the parameters of the cooking mode are obtained and the heating instructions are received, and the cooking control based on these parameters is implemented. The cooking process is divided into time periods to monitor the cooking process, and the variable frequency control demand index is analyzed to determine whether variable frequency control is required; after the cooking conditions are met, the temperature data is continuously monitored and it is determined whether to enter the insulation mode. At the same time, the temperature, air pressure and gas leakage in the steam cabinet are monitored to ensure safety and issue an early warning. The variable frequency control method can improve cooking efficiency, which can not only significantly improve cooking efficiency and food quality, but also effectively save energy and reduce gas consumption.

[0036] (2) The present invention receives cooking parameters, and within a set monitoring time period, monitors the maximum and minimum temperature, humidity and pressure of steam in real time and calculates the difference of these parameters for processing, thereby obtaining the steam temperature evaluation value, humidity evaluation value and pressure evaluation value of the gas steam cabinet within each monitoring time period, and accurately controls the cooking environment, thereby ensuring that the temperature, humidity, pressure and other conditions are maintained in the optimal state during the cooking process, thereby improving the quality of food cooking.

[0037] (3) The present invention extracts the steam temperature evaluation value, humidity evaluation value and pressure evaluation value of the gas steam cabinet in each monitoring time period, and processes them to obtain the variable frequency control demand index, which is used to adjust the gas valve, steam valve and water inlet, which helps to ensure the stable operation of the steam cabinet and avoid the decline in cooking quality or equipment damage caused by abnormal temperature, humidity and pressure, thereby realizing intelligent adjustment of the gas steam cabinet.

[0038] (4) When the cooking time is over, the gas steam cabinet of the present invention will close the gas valve and continuously monitor the internal steam temperature to decide whether to enter the insulation mode. If the steam temperature or gas pressure is detected to exceed the safety threshold, the system will reduce the gas supply and sound an alarm. If a gas leak is detected, the gas valve will be closed immediately and an alarm will be sounded. By automatically adjusting the gas supply, cooking safety is ensured and energy consumption is optimized, the risk of failure is reduced, and user safety and cooking experience are improved.

[0039] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The present invention is a flow chart of an intelligent frequency conversion control system for a gas steam cabinet.

[0041] Figure 2 It is the steam humidity evaluation value curve of the gas steam cabinet of the present invention.

[0042] Figure 3 The present invention is a flow chart of an intelligent frequency conversion control method for a gas steam cabinet. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0045] See also Figure 1 An embodiment of the present invention provides a technical solution: an intelligent frequency conversion control system for a gas steam cabinet, comprising a parameter acquisition module for acquiring cooking parameters of a cooking mode of the gas steam cabinet.

[0046] The data monitoring and analysis module is used to receive heating instructions, control the gas steam cabinet to cook based on cooking parameters, set monitoring time periods, monitor and analyze the cooking process, and obtain the frequency conversion control demand index of the gas steam cabinet within each monitoring time period.

[0047] The frequency conversion control module is used to perform frequency conversion control on the gas steam cabinet according to the frequency conversion control demand index of the gas steam cabinet in each monitoring time period, and to perform residual heat control on the gas steam cabinet after cooking is completed.

[0048] The safety warning module is used to monitor the steam temperature and pressure in the gas steam cabinet and the gas concentration in the gas steam cabinet, and to issue safety warnings.

[0049] It should be noted that the cooking parameters are set, the parameters of the cooking mode are obtained and the heating instructions are received, the cooking control based on these parameters is implemented, and the data of the cooking process is monitored in real time to analyze the frequency conversion control demand index to determine whether frequency conversion control is needed; after the cooking conditions are met, the temperature data is continuously monitored to determine whether to enter the insulation mode, and the temperature, air pressure and gas leakage in the steam cabinet are monitored and an early warning is issued. The frequency conversion control method can improve cooking efficiency, which can not only significantly improve cooking efficiency and food quality, but also effectively save energy, reduce gas consumption and accidents.

[0050] Specifically, the cooking parameters of the cooking mode of the gas steam cabinet include: cooking time, reference cooking temperature, reference cooking humidity, and reference cooking pressure.

[0051] Specifically, the cooking parameters of the cooking mode of the gas steam cabinet are received, the food in the gas steam cabinet is cooked, the monitoring time period is set, and the maximum steam temperature, the minimum steam temperature, the maximum steam humidity, the minimum steam humidity, the maximum steam pressure and the minimum steam pressure in the gas steam cabinet are monitored during each monitoring time period.

[0052] The differences between the highest steam temperature and the lowest steam temperature, the highest steam humidity and the lowest steam humidity, and the highest steam pressure and the lowest steam pressure in the gas steam cabinet in each monitoring time period are calculated respectively to obtain the temperature difference, humidity difference and pressure difference in the steam cabinet in each monitoring time period.

[0053] It should be noted that extracting cooking parameters of a gas steam cabinet from a database and performing intelligent cooking on the steam cabinet based on these parameters can optimize the cooking process and improve the cooking quality of food.

[0054] It should be noted that the steam temperature in the gas steam cabinet is monitored by a temperature sensor during each monitoring time period, and the maximum and minimum steam temperatures during each monitoring time period are extracted; the steam humidity in the gas steam cabinet during each monitoring time period is monitored by a humidity sensor, and the maximum and minimum steam humidity during each monitoring time period are obtained; the steam pressure of the gas steam cabinet during each monitoring time period is monitored and recorded by a pressure sensor, and the maximum and minimum steam pressure during each monitoring time are obtained, and the differences are calculated to obtain the temperature difference, humidity difference and pressure difference in the steam cabinet during each monitoring time period.

[0055] Specifically, the maximum steam temperature in the gas steam cabinet in each monitoring time period, the reference cooking temperature and the temperature difference in the gas steam cabinet in each monitoring time period are analyzed to obtain the steam temperature evaluation value of the gas steam cabinet in each monitoring time period.

[0056] The maximum steam humidity in the gas steam cabinet during each monitoring period, the reference cooking humidity and the temperature difference in the gas steam cabinet during each monitoring period are analyzed to obtain the steam humidity evaluation value of the gas steam cabinet during each monitoring period.

[0057] The maximum steam pressure in the gas steam cabinet during each monitoring time period, the reference cooking pressure and the pressure difference in the gas steam cabinet during each monitoring time period are analyzed to obtain the steam pressure evaluation value of the gas steam cabinet during each monitoring time period.

[0058] It should be noted that the specific analysis conditions for the steam temperature evaluation value of the gas steam cabinet during each monitoring period are as follows:

[0059] ;

[0060] In the formula, represents the steam temperature evaluation value of the gas steam cabinet during the i-th monitoring period, represents the maximum temperature of steam in the gas steam cabinet during the i-th monitoring period, represents the temperature difference in the gas steam cabinet during the i-th monitoring period, Indicates reference cooking temperature, Indicates the set temperature difference reference value, Indicates the correction factor for the maximum steam temperature in the gas steam cabinet. It represents the correction factor of the temperature difference in the set gas steam cabinet, e is a natural constant, , m represents the total number of monitoring time periods.

[0061] It should be noted that for gas steamers, more attention is paid to whether food can be cooked at a sufficiently high temperature, or the impact of temperature deviation from the cooking temperature on food quality. Therefore, even if there is a low temperature period in the steamer within a certain monitoring period, as long as the steamer is in the continuous heating process, the temperature will continue to rise until it reaches a stable value, which will not cause much impact on food quality. Therefore, it is only necessary to consider whether the temperature deviates from the maximum value, and when the maximum temperature deviates from the maximum value too much, the gas valve of the gas steamer should be adjusted.

[0062] It should be noted that the maximum steam temperature in the gas steam cabinet is correlated with the temperature difference in the gas steam cabinet. The higher the maximum steam temperature, the stronger the capacity of the heating system, and the greater the temperature difference in the gas steam cabinet within a monitoring period.

[0063] It is the correction factor corresponding to the maximum steam temperature in the gas steam cabinet preset in the database, which indicates the numerical value of the influence degree of the maximum steam temperature in the gas steam cabinet on the steam temperature evaluation value of the gas steam cabinet. When used, the correction factor corresponding to the maximum steam temperature in the gas steam cabinet can be directly obtained from the database. The corresponding relationship can be a preset mapping relationship. For example, the maximum steam temperature in the gas steam cabinet and the correction factor corresponding to the maximum steam temperature in the gas steam cabinet preset in the database form a mapping set. The real-time maximum steam temperature in the gas steam cabinet is input into the mapping set to obtain the correction factor corresponding to the maximum steam temperature in the gas steam cabinet. The mapping relationship can be a one-to-one correspondence or a many-to-one relationship. In this example, its value range is [0,1].

[0064] It is the correction factor corresponding to the temperature difference in the gas steam cabinet preset in the database, which indicates the numerical value of the influence degree of the temperature difference in the gas steam cabinet on the steam temperature evaluation value of the gas steam cabinet. When used, the correction factor corresponding to the temperature difference in the gas steam cabinet can be directly obtained from the database. The corresponding relationship can be a pre-set mapping relationship. For example, the temperature difference in the gas steam cabinet and the correction factor corresponding to the temperature difference in the gas steam cabinet preset in the database form a mapping set. The real-time temperature difference in the gas steam cabinet is input into the mapping set to obtain the correction factor corresponding to the temperature difference in the gas steam cabinet. The mapping relationship can be a one-to-one correspondence or a many-to-one relationship. In this example, its value range is [0,1].

[0065] like Figure 2 As shown, Figure 2 The figure represents the steam humidity evaluation value curve of the gas steam cabinet, wherein the x-axis represents the maximum steam temperature in the gas steam cabinet during the i-th monitoring time period, in degrees Celsius, and the y-axis represents the steam temperature evaluation value of the gas steam cabinet during the i-th monitoring time period. Three different groups of example parameters are defined in the figure, corresponding to different situations of the three curves, represented by solid lines, dashed lines and dotted lines respectively, and the corresponding curve labels are a, b, and c respectively. When the temperature difference in the gas steam cabinet during the i-th monitoring time period is 0 degrees Celsius, the schematic diagram of the relationship of the temperature difference in the gas steam cabinet during the i-th monitoring time period is shown in curve a. When the temperature difference in the gas steam cabinet during the i-th monitoring time period is 3 degrees Celsius, the schematic diagram of the relationship of the steam temperature evaluation value of the gas steam cabinet during the i-th monitoring time period is shown in curve b. When the temperature difference in the gas steam cabinet during the i-th monitoring time period is 5 degrees Celsius, the schematic diagram of the relationship of the steam temperature evaluation value of the gas steam cabinet during the i-th monitoring time period is shown in curve c. Referring to the cooking temperature Set to 100 degrees Celsius, set the temperature difference reference value Set to 2 degrees Celsius, the correction factor for the maximum temperature of steam in the gas steam cabinet Set to 0.63, the correction factor for the temperature difference in the gas steam cabinet Set to 0.72.

[0066] As shown in Table 1, Table 1 is example data of the steam temperature evaluation value of the gas steam cabinet, which lists the steam temperature evaluation value of the gas steam cabinet in the i-th monitoring time period and the maximum steam temperature in the gas steam cabinet in the i-th monitoring time period.

[0067] Table 1 Example data for steam temperature evaluation values ​​for gas steam cabinets

[0068]

[0069] As shown in Table 1, in a specific embodiment, when referring to the cooking temperature =100 (degrees Celsius), the set temperature difference reference value = 2 (degrees Celsius), correction factor for the maximum steam temperature in the gas steam cabinet =0.63, correction factor for the temperature difference in the set gas steam cabinet =0.72, the steam temperature evaluation value of the gas steam cabinet is determined by the maximum steam temperature and the temperature difference in the gas steam cabinet during the i-th monitoring time period. When the maximum steam temperature in the gas steam cabinet during the i-th monitoring time period decreases, the steam temperature evaluation value of the gas steam cabinet will decrease accordingly.

[0070] It should be noted that the specific analysis conditions for the steam humidity assessment value of the gas steam cabinet during each monitoring period are as follows:

[0071] ;

[0072] In the formula, represents the steam humidity evaluation value of the gas steam cabinet during the i-th monitoring period, It represents the maximum humidity of steam in the gas steam cabinet during the i-th monitoring period. represents the humidity difference in the gas steam cabinet during the i-th monitoring period, Indicates reference cooking humidity, Indicates the set humidity difference reference value. Indicates the correction factor for the maximum humidity of steam in the gas steam cabinet. Indicates the correction factor for the humidity difference in the set gas steam cabinet. , m represents the total number of monitoring time periods.

[0073] It should be noted that the maximum humidity of the steam in the gas steam cabinet is correlated with the humidity difference in the gas steam cabinet. When the gas steam cabinet is continuously heated, the steam may enter an overheated state or form wet steam. At this time, the maximum humidity may decrease, while the humidity difference may increase.

[0074] It is the correction factor corresponding to the maximum steam humidity in the gas steam cabinet preset in the database, which indicates the numerical value of the influence degree of the maximum steam humidity in the gas steam cabinet on the steam humidity evaluation value of the gas steam cabinet. When used, the correction factor corresponding to the maximum steam humidity in the gas steam cabinet can be directly obtained from the database. The corresponding relationship can be a preset mapping relationship. For example, the maximum steam humidity in the gas steam cabinet and the correction factor corresponding to the maximum steam humidity in the gas steam cabinet preset in the database form a mapping set. The real-time maximum steam humidity in the gas steam cabinet is input into the mapping set to obtain the correction factor corresponding to the maximum steam humidity in the gas steam cabinet. The mapping relationship can be a one-to-one correspondence or a many-to-one relationship. In this example, its value range is [0,1].

[0075] It is the correction factor corresponding to the humidity difference in the gas steam cabinet preset in the database, which indicates the numerical value of the influence degree of the humidity difference in the gas steam cabinet on the steam humidity evaluation value of the gas steam cabinet. When used, the correction factor corresponding to the humidity difference in the gas steam cabinet can be directly obtained from the database. The corresponding relationship can be a preset mapping relationship. For example, the humidity difference in the gas steam cabinet and the correction factor corresponding to the humidity difference in the gas steam cabinet preset in the database form a mapping set. The real-time humidity difference in the gas steam cabinet is input into the mapping set to obtain the correction factor corresponding to the humidity difference in the gas steam cabinet. The mapping relationship can be a one-to-one correspondence or a many-to-one relationship. In this example, its value range is [0,1].

[0076] It should be noted that the specific analysis conditions for the steam pressure evaluation value of the gas steam cabinet during each monitoring period are as follows:

[0077] ;

[0078] In the formula, represents the steam pressure evaluation value of the gas steam cabinet during the i-th monitoring period, It represents the maximum steam pressure in the gas steam cabinet during the i-th monitoring period. It represents the pressure difference in the gas steam cabinet during the i-th monitoring period. Indicates reference cooking pressure, Indicates the set pressure difference reference value, Indicates the correction factor corresponding to the maximum steam pressure in the gas steam cabinet. It indicates the correction factor corresponding to the set pressure difference in the gas steam cabinet, e is a natural constant, , m represents the total number of monitoring time periods.

[0079] It should be noted that the maximum steam pressure in the gas steam cabinet is correlated with the pressure difference in the gas steam cabinet. When the pressure difference is large, in order to promote more heat transfer, the steam pressure level is higher.

[0080] It is the correction factor corresponding to the maximum steam pressure in the gas steam cabinet preset in the database, which indicates the numerical value of the influence degree of the maximum steam pressure in the gas steam cabinet on the steam pressure evaluation value of the gas steam cabinet. When used, the correction factor corresponding to the maximum steam pressure in the gas steam cabinet can be directly obtained from the database. The corresponding relationship can be a preset mapping relationship. For example, the maximum steam pressure in the gas steam cabinet and the correction factor corresponding to the maximum steam pressure in the gas steam cabinet preset in the database form a mapping set. The real-time maximum steam pressure in the gas steam cabinet is input into the mapping set to obtain the correction factor corresponding to the maximum steam pressure in the gas steam cabinet. The mapping relationship can be a one-to-one correspondence or a many-to-one relationship. In this example, its value range is [0,1].

[0081] It is the correction factor corresponding to the pressure difference in the gas steam cabinet preset in the database, which indicates the numerical value of the influence degree of the pressure difference in the gas steam cabinet on the steam pressure evaluation value of the gas steam cabinet. When used, the correction factor corresponding to the pressure difference in the gas steam cabinet can be directly obtained from the database. The corresponding relationship can be a preset mapping relationship. For example, the pressure difference in the gas steam cabinet and the correction factor corresponding to the pressure difference in the gas steam cabinet preset in the database form a mapping set. The real-time pressure difference in the gas steam cabinet is input into the mapping set to obtain the correction factor corresponding to the pressure difference in the gas steam cabinet. The mapping relationship can be a one-to-one correspondence or a many-to-one relationship. In this example, its value range is [0,1].

[0082] Specifically, the steam temperature evaluation value, the steam humidity evaluation value and the steam pressure evaluation value of the gas steam cabinet in each monitoring time period are extracted, and the variable frequency control demand index of the gas steam cabinet in each monitoring time period is obtained by processing.

[0083] It should be noted that by extracting the steam temperature, humidity and pressure evaluation values ​​of the gas steamer during each monitoring time period, the variable frequency control demand index of the gas steamer can be calculated, which is used to determine the adjustment coefficients of the gas valve and steam valve, and whether the water inlet of the steamer needs to be adjusted, so as to achieve precise control and optimization of the cooking process, improve energy efficiency and ensure cooking quality.

[0084] Specifically, the frequency conversion control demand index of the gas steam cabinet in each monitoring time period is compared with the frequency conversion control demand index safety threshold of the gas steam cabinet stored in the database.

[0085] If the frequency conversion control demand index of the gas steam cabinet within a monitoring time period is higher than the frequency conversion control demand index safety threshold of the gas steam cabinet stored in the database, the steam temperature evaluation value of the gas steam cabinet within the monitoring time period is compared with the first threshold of the steam temperature evaluation value of the gas steam cabinet. If the steam temperature evaluation value of the gas steam cabinet within the monitoring time period is higher than the first threshold of the steam temperature evaluation value of the gas steam cabinet, the opening of the gas valve of the gas steam cabinet is frequency-controlled. If it is lower than or equal to the first threshold of the steam temperature evaluation value of the gas steam cabinet, there is no need to adjust the gas valve of the gas steam cabinet.

[0086] The steam humidity evaluation value of the gas steam cabinet during the monitoring time period is compared with the second threshold value of the steam humidity evaluation value of the gas steam cabinet. If the steam humidity evaluation value of the gas steam cabinet during the monitoring time period is higher than the second threshold value of the steam humidity evaluation value of the gas steam cabinet, the water intake of the gas steam cabinet is frequency-controlled. If it is lower than or equal to the second threshold value of the steam humidity evaluation value of the gas steam cabinet, there is no need to adjust the water intake of the steam cabinet.

[0087] The steam pressure evaluation value of the gas steam cabinet during the monitoring time period is compared with the third threshold value of the steam pressure evaluation value of the gas steam cabinet. If the steam pressure evaluation value of the gas steam cabinet during the monitoring time period is higher than the third threshold value of the steam pressure evaluation value of the gas steam cabinet, the opening of the steam valve of the gas steam cabinet is controlled by frequency conversion. If it is lower than or equal to the third threshold value of the steam pressure evaluation value of the gas steam cabinet, there is no need to adjust the steam valve of the gas steam cabinet.

[0088] If the frequency conversion control demand index of the gas steam cabinet in a certain monitoring time period is lower than or equal to the frequency conversion control demand index safety threshold of the gas steam cabinet stored in the database, frequency conversion control is not required.

[0089] After the frequency conversion control is completed, the frequency conversion control demand index of the gas steam cabinet in the monitoring time period is recalculated and compared with the frequency conversion control demand index safety threshold of the gas steam cabinet stored in the database to determine whether the frequency conversion control is completed.

[0090] The gas valve of the gas steam cabinet, the water intake of the steam cabinet and the number of times the steam valve is adjusted are recorded. When the number of adjustments reaches the specified number of adjustments, an early warning prompt is issued.

[0091] It should be noted that by comparing the frequency conversion control demand index of the gas steam cabinet in each monitoring time period with the safety threshold stored in the database, it is preliminarily determined whether the gas steam cabinet needs frequency conversion control, and then the steam temperature evaluation value, humidity evaluation value and pressure evaluation value of the gas steam cabinet in each monitoring time period are used to accurately control the gas valve of the hot steam cabinet, the water intake of the steam cabinet and the steam valve. After the frequency conversion control, the frequency conversion control demand index of the gas steam cabinet in the monitoring time period is compared to determine whether the frequency conversion control is completed, and it also includes analyzing whether the frequency conversion control effect is achieved. This can improve the accuracy of the frequency conversion control of the gas steam cabinet, effectively reduce unnecessary adjustment frequency, reduce system redundant calculations, improve operating efficiency, ensure the safety of the frequency conversion control of the gas steam cabinet, and prevent the occurrence of abnormal situations.

[0092] It should be noted that the frequency conversion control demand index of the gas steam cabinet in each monitoring time period is compared with the safety threshold stored in the database. If the frequency conversion control demand index of the gas steam cabinet in a monitoring time period is higher than the safety threshold of the frequency conversion control demand index of the gas steam cabinet, the steam temperature evaluation value, humidity evaluation value and pressure evaluation value of the gas steam cabinet in the monitoring time period are further compared, and the gas valve of the gas steam cabinet, the water intake of the steam cabinet and the steam valve are frequency controlled.

[0093] It should be noted that if the steam temperature evaluation value of the gas steam cabinet in each monitoring time period is higher than the first threshold value of the steam temperature evaluation value of the gas steam cabinet, the difference between the steam temperature evaluation value of the gas steam cabinet in each monitoring time period and the first threshold value of the steam temperature evaluation value of the gas steam cabinet is calculated to obtain the steam temperature evaluation difference of the gas steam cabinet, and the difference is matched with the gas valve adjustment coefficient corresponding to each interval of the steam temperature evaluation difference of the gas steam cabinet in the database to obtain the gas valve adjustment coefficient of the gas steam cabinet.

[0094] It should be noted that the gas valve adjustment coefficient of the gas steam cabinet is preset in the database. According to the steam temperature evaluation difference of the gas steam cabinet in each monitoring time period, the gas valve adjustment coefficient of the gas steam cabinet corresponding to each interval of the steam temperature evaluation difference of the gas steam cabinet in the database is matched to obtain the gas valve adjustment coefficient of the gas steam cabinet. For example, the steam temperature evaluation difference of the gas steam cabinet and the gas valve adjustment coefficient of the gas steam cabinet form a mapping set, and the steam temperature evaluation difference of the gas steam cabinet in each monitoring time period is input into the mapping set to obtain the gas valve adjustment coefficient of the gas steam cabinet, and the mapping relationship is a one-to-one corresponding relationship.

[0095] It should be noted that if the steam humidity assessment value of the gas steam cabinet in each monitoring time period is higher than the second threshold value of the steam humidity assessment value of the gas steam cabinet, the difference between the steam humidity assessment value of the gas steam cabinet in each monitoring time period and the second threshold value of the steam humidity assessment value of the gas steam cabinet is calculated to obtain the steam humidity assessment difference of the gas steam cabinet, and the difference is matched with the water intake of the steam cabinet corresponding to each interval of the steam humidity assessment difference of the gas steam cabinet in the database to obtain the water intake of the gas steam cabinet.

[0096] It should be noted that the water intake of the gas steam cabinet is preset in the database. According to the steam humidity assessment difference of the gas steam cabinet in each monitoring time period, the water intake of the gas steam cabinet corresponding to each interval of the steam humidity assessment difference of the gas steam cabinet in the database is matched to obtain the water intake of the gas steam cabinet. For example, the steam humidity assessment difference of the gas steam cabinet and the water intake of the gas steam cabinet form a mapping set, and the steam humidity assessment difference of the gas steam cabinet in each monitoring time period is input into the mapping set to obtain the water intake of the gas steam cabinet, and the mapping relationship is a one-to-one corresponding relationship.

[0097] It should be noted that if the steam pressure evaluation value of the gas steam cabinet in each monitoring time period is higher than the third threshold value of the steam pressure evaluation value of the gas steam cabinet, the difference between the steam pressure evaluation value of the gas steam cabinet in each monitoring time period and the third threshold value of the steam pressure evaluation value of the gas steam cabinet is calculated to obtain the steam pressure evaluation difference of the gas steam cabinet, and the difference is matched with the adjustment coefficient of the steam valve corresponding to each interval of the steam pressure evaluation difference of the gas steam cabinet in the database to obtain the adjustment coefficient of the steam valve of the gas steam cabinet.

[0098] It should be noted that the steam valve adjustment coefficient of the gas steam cabinet is preset in the database. According to the steam pressure evaluation difference of the gas steam cabinet in each monitoring time period, the steam valve adjustment coefficient of the gas steam cabinet corresponding to each interval of the steam pressure evaluation difference of the gas steam cabinet in the database is matched to obtain the steam valve adjustment coefficient of the gas steam cabinet. For example, the steam pressure evaluation difference of the gas steam cabinet and the adjustment coefficient of the steam valve of the gas steam cabinet form a mapping set, and the steam pressure evaluation difference of the gas steam cabinet in each monitoring time period is input into the mapping set to obtain the adjustment coefficient of the steam valve of the gas steam cabinet, and the mapping relationship is a one-to-one corresponding relationship.

[0099] It should be noted that when the frequency conversion control is completed, the frequency conversion control demand index of the gas steam cabinet during the monitoring time period is reprocessed and compared with the safety threshold of the frequency conversion control demand index of the gas steam cabinet stored in the database to determine whether the frequency conversion control is completed. If the frequency conversion control demand index of the gas steam cabinet during the monitoring time period is higher than the safety threshold of the frequency conversion control demand index of the gas steam cabinet stored in the database, it means that the frequency conversion control during the monitoring time period is not completed and the frequency conversion control needs to continue. If the frequency conversion control demand index of the gas steam cabinet during the monitoring time period is lower than or equal to the safety threshold of the frequency conversion control demand index of the gas steam cabinet stored in the database, it means that the frequency conversion control during the monitoring time period is completed.

[0100] It should be noted that the number of times the gas valve, water inlet and steam valve of the gas steam cabinet are adjusted is recorded. If any one of the gas valve, water inlet and steam valve of the gas steam cabinet is adjusted in a certain monitoring period, it is recorded as one adjustment. If any one of the gas valve, water inlet and steam valve of the gas steam cabinet needs to be adjusted in consecutive monitoring periods, the number of adjustments is accumulated. If any one of the gas valve, water inlet and steam valve of the gas steam cabinet does not need to be adjusted in a certain monitoring period, the number of adjustments is cleared. When the number of adjustments reaches the specified number of adjustments, an early warning is issued to remind the gas steam cabinet that maintenance is required. The specified number of adjustments is obtained from the database. For example: when the specified number of adjustments is 4, if any one of the gas valve, water inlet and steam valve of the gas steam cabinet needs to be adjusted in four consecutive monitoring cycles, the number of adjustments reaches 4, and a pop-up window reminder will be issued through the PC to remind the staff that there may be a problem with the gas steam cabinet and repair and maintenance is required.

[0101] Specifically, after the cooking process is completed, the gas valve of the gas steam cabinet is closed, and the steam temperature inside the gas steam cabinet is continuously monitored. If the steam temperature inside the gas steam cabinet is detected to be lower than a preset temperature threshold, the heat preservation mode will be automatically entered.

[0102] It should be noted that the end of the cooking process refers to the time when the gas steamer completes the cooking time. After the cooking process is completed, the gas valve will automatically close to stop heating, and the steam temperature inside the gas steamer will be continuously monitored to determine whether to enter the insulation mode. If the monitoring result shows that the temperature drops and is lower than the preset temperature threshold, the system will automatically start the insulation mode and open the gas valve of the gas steamer to the lowest to maintain the optimal temperature of the food. By automatically switching to the insulation mode, the cooking quality of the food is guaranteed.

[0103] Specifically, when it is monitored that the steam temperature in the gas steam cabinet exceeds the steam temperature safety threshold of the gas steam cabinet, the gas supply is reduced and an alarm is sounded. When it is monitored that the steam pressure in the gas steam cabinet exceeds the steam pressure safety threshold of the gas steam cabinet, the gas supply is reduced, the water intake of the steam cabinet is increased and an alarm is sounded. When it is monitored that the gas concentration of the gas steam cabinet exceeds the gas concentration safety threshold of the gas steam cabinet, the gas valve is closed and an alarm is sounded.

[0104] It should be noted that the gas concentration is detected in real time in the gas steam cabinet by a gas leak detector.

[0105] It should be noted that the intelligent frequency conversion control system of the gas steam cabinet monitors the steam temperature, steam pressure and gas concentration in the gas steam cabinet in real time. Once any parameter exceeds the preset safety threshold, it will automatically take corresponding safety measures, such as reducing gas supply, increasing the water inlet of the steam cabinet or emergency closing of the gas valve, and immediately issue an alarm to ensure the safety of the cooking process and effectively prevent accidents.

[0106] Specifically, the frequency conversion control demand index of the gas steam cabinet in each monitoring time period, the specific analysis conditions are as follows:

[0107] ;

[0108] In the formula, represents the frequency conversion control demand index of the gas steam cabinet in the i-th monitoring time period, represents the steam temperature evaluation value of the gas steam cabinet during the i-th monitoring period, represents the steam humidity evaluation value of the gas steam cabinet during the i-th monitoring period, represents the steam pressure evaluation value of the gas steam cabinet during the i-th monitoring period, Indicates the weight factor corresponding to the set steam temperature evaluation value of the gas steam cabinet, Indicates the weight factor corresponding to the steam humidity assessment value of the set gas steam cabinet, It represents the weight factor corresponding to the steam pressure evaluation value of the set gas steam cabinet, e is a natural constant, , m represents the total number of monitoring time periods.

[0109] It should be noted that The weight factor corresponding to the steam temperature evaluation value of the gas steam cabinet preset in the database represents the weight degree of the steam temperature evaluation value of the gas steam cabinet to the variable frequency control demand index of the gas steam cabinet for gas heating. When used, the weight factor corresponding to the steam temperature evaluation value of the gas steam cabinet can be directly obtained from the database. The corresponding relationship can be a pre-set mapping relationship. For example, the steam temperature evaluation value of the gas steam cabinet and the weight factor corresponding to the steam temperature evaluation value of the gas steam cabinet preset in the database form a mapping set. The real-time steam temperature evaluation value of the gas steam cabinet is input into the mapping set to obtain the weight factor corresponding to the steam temperature evaluation value of the gas steam cabinet. The mapping relationship can be a one-to-one correspondence or a many-to-one relationship. In this example, its value range is [0,1].

[0110] The weight factor corresponding to the steam humidity evaluation value of the gas steam cabinet preset in the database represents the weight degree of the steam humidity evaluation value of the gas steam cabinet to the variable frequency control demand index of the gas heating gas steam cabinet. When used, the weight factor corresponding to the steam humidity evaluation value of the gas steam cabinet can be directly obtained from the database. The corresponding relationship can be a pre-set mapping relationship. For example, the steam humidity evaluation value of the gas steam cabinet and the weight factor corresponding to the steam humidity evaluation value of the gas steam cabinet preset in the database form a mapping set. The real-time steam humidity evaluation value of the gas steam cabinet is input into the mapping set to obtain the weight factor corresponding to the steam humidity evaluation value of the gas steam cabinet. The mapping relationship can be a one-to-one correspondence or a many-to-one relationship. In this example, its value range is [0,1].

[0111] The weight factor corresponding to the steam pressure evaluation value of the gas steam cabinet preset in the database represents the weight degree of the steam pressure evaluation value of the gas steam cabinet to the variable frequency control demand index of the gas heating gas steam cabinet. When used, the weight factor corresponding to the steam pressure evaluation value of the gas steam cabinet can be directly obtained from the database. The corresponding relationship can be a pre-set mapping relationship. For example, the steam pressure evaluation value of the gas steam cabinet and the weight factor corresponding to the steam pressure evaluation value of the gas steam cabinet preset in the database form a mapping set. The real-time steam pressure evaluation value of the gas steam cabinet is input into the mapping set to obtain the weight factor corresponding to the steam pressure evaluation value of the gas steam cabinet. The mapping relationship can be a one-to-one correspondence or a many-to-one relationship. In this example, its value range is [0,1].

[0112] Specifically, the second aspect of the present invention provides an intelligent frequency conversion control method for a gas steam cabinet, comprising: obtaining cooking parameters of a cooking mode of the gas steam cabinet.

[0113] Receive heating instructions, control the gas steam cabinet to cook based on cooking parameters, set monitoring time periods, monitor and analyze the cooking process, and obtain the frequency conversion control demand index of the gas steam cabinet within each monitoring time period.

[0114] According to the frequency conversion control demand index of the gas steam cabinet in each monitoring time period, the gas steam cabinet is frequency-controlled, and after cooking is completed, the gas steam cabinet is subjected to residual heat control.

[0115] The safety warning module is used to monitor the steam temperature and pressure in the gas steam cabinet and the gas concentration in the gas steam cabinet, and to issue safety warnings.

[0116] It should be noted that the cooking parameters are set, the parameters of the cooking mode are obtained, and the heating instructions are received for cooking. The data analysis of the cooking process is monitored in real time to obtain the frequency conversion control demand index, and the frequency conversion adjustment is performed according to the index; when the cooking time is over, the temperature data is continuously monitored and it is determined whether to enter the insulation mode. At the same time, the temperature, air pressure and gas leakage in the steam cabinet are monitored to ensure safety and issue an early warning. The frequency conversion control method can improve cooking efficiency, save energy, reduce gas consumption, and ensure safety through real-time monitoring to reduce accidental risks.

[0117] It should be noted that an intelligent variable frequency control system and method for a gas steam cabinet also includes a database for storing and managing system-related data of the gas steam cabinet, including cooking time, reference cooking temperature, reference cooking humidity, reference cooking pressure, a safety threshold of a variable frequency control demand index of the gas steam cabinet, a weight factor corresponding to an evaluation value of the steam temperature of the gas steam cabinet, a weight factor corresponding to an evaluation value of the steam humidity of the gas steam cabinet, a weight factor corresponding to an evaluation value of the steam pressure of the gas steam cabinet, a reference value of a temperature difference, a correction factor for the maximum temperature of the steam in the gas steam cabinet, a correction factor for the temperature difference in the gas steam cabinet, a correction factor for the maximum humidity of the steam in the gas steam cabinet, and a gas pressure. Correction factor for humidity difference in gas steam cabinet, correction factor corresponding to maximum steam pressure in gas steam cabinet, correction factor corresponding to pressure difference in gas steam cabinet, gas valve adjustment coefficient, water inlet of gas steam cabinet, temperature difference reference value, pressure difference reference value, first threshold value of steam temperature assessment value of gas steam cabinet, second threshold value of steam humidity assessment value of gas steam cabinet, third threshold value of steam pressure assessment value of gas steam cabinet, steam valve adjustment coefficient of gas steam cabinet, preset temperature threshold, steam temperature safety threshold of gas steam cabinet, steam pressure safety threshold of gas steam cabinet, gas concentration safety threshold of gas steam cabinet, adjustment coefficient of steam valve of gas steam cabinet.

[0118] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0119] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An intelligent frequency conversion control system for a gas steam cabinet, characterized in that: include: A parameter acquisition module, used to acquire cooking parameters of a cooking mode of a gas steam cabinet; The data monitoring and analysis module is used to receive heating instructions, control the gas steam cabinet to cook based on cooking parameters, set monitoring time periods, monitor and analyze the cooking process, and obtain the frequency conversion control demand index of the gas steam cabinet in each monitoring time period; A frequency conversion control module is used to perform frequency conversion control on the gas steam cabinet according to the frequency conversion control demand index of the gas steam cabinet in each monitoring time period, and to perform residual heat control on the gas steam cabinet after cooking is completed; Safety warning module, used to monitor the steam temperature and pressure in the gas steam cabinet and the gas concentration in the gas steam cabinet, and issue safety warnings; The cooking parameters of the cooking mode of the gas steam cabinet include: cooking time, reference cooking temperature, reference cooking humidity, and reference cooking pressure; The method is used to receive a heating instruction, control the gas steam cabinet to cook based on cooking parameters, set a monitoring time period, and monitor and analyze the cooking process. The specific analysis is as follows: Receive cooking parameters of a cooking mode of a gas steam cabinet, cook food in the gas steam cabinet, set a monitoring time period, and monitor the maximum steam temperature, minimum steam temperature, maximum steam humidity, minimum steam humidity, maximum steam pressure, and minimum steam pressure in the gas steam cabinet in each monitoring time period; The differences between the highest steam temperature and the lowest steam temperature, the highest steam humidity and the lowest steam humidity, and the highest steam pressure and the lowest steam pressure in the gas steam cabinet in each monitoring time period are calculated respectively to obtain the temperature difference, humidity difference and pressure difference in the steam cabinet in each monitoring time period; The cooking process is monitored and analyzed, and the specific analysis is as follows: Analyze the maximum steam temperature in the gas steam cabinet in each monitoring time period, the reference cooking temperature and the temperature difference in the gas steam cabinet in each monitoring time period, and obtain the steam temperature evaluation value of the gas steam cabinet in each monitoring time period; Analyze the maximum steam humidity in the gas steam cabinet in each monitoring time period, the reference cooking humidity and the humidity difference in the gas steam cabinet in each monitoring time period, and obtain the steam humidity evaluation value of the gas steam cabinet in each monitoring time period; Analyze the maximum steam pressure in the gas steam cabinet in each monitoring time period, the reference cooking pressure and the pressure difference in the gas steam cabinet in each monitoring time period, and obtain the steam pressure evaluation value of the gas steam cabinet in each monitoring time period; The specific process of obtaining the frequency conversion control demand index of the gas steam cabinet in each monitoring time period is as follows: Extract the steam temperature evaluation value, steam humidity evaluation value and steam pressure evaluation value of the gas steam cabinet in each monitoring time period, and process them to obtain the variable frequency control demand index of the gas steam cabinet in each monitoring time period; The specific analysis conditions of the frequency conversion control demand index of the gas steam cabinet in each monitoring time period are as follows: ； In the formula, represents the frequency conversion control demand index of the gas steam cabinet in the i-th monitoring time period, represents the steam temperature evaluation value of the gas steam cabinet during the i-th monitoring period, represents the steam humidity evaluation value of the gas steam cabinet during the i-th monitoring period, represents the steam pressure evaluation value of the gas steam cabinet during the i-th monitoring period, Indicates the weight factor corresponding to the set steam temperature evaluation value of the gas steam cabinet, Indicates the weight factor corresponding to the steam humidity assessment value of the set gas steam cabinet, It represents the weight factor corresponding to the steam pressure evaluation value of the set gas steam cabinet, e is a natural constant, , m represents the total number of monitoring time periods.

2. According to the intelligent frequency conversion control system of the gas steam cabinet according to claim 1, it is characterized in that: According to the frequency conversion control demand index of the gas steam cabinet in each monitoring time period, the gas steam cabinet is subjected to frequency conversion control, and the specific analysis is as follows: Compare the frequency conversion control demand index of the gas steam cabinet in each monitoring time period with the frequency conversion control demand index safety threshold of the gas steam cabinet stored in the database; If the frequency conversion control demand index of the gas steam cabinet in a certain monitoring time period is higher than the frequency conversion control demand index safety threshold of the gas steam cabinet stored in the database, the steam temperature evaluation value of the gas steam cabinet in the monitoring time period is compared with the first threshold of the steam temperature evaluation value of the gas steam cabinet. If the steam temperature evaluation value of the gas steam cabinet in the monitoring time period is higher than the first threshold of the steam temperature evaluation value of the gas steam cabinet, the opening of the gas valve of the gas steam cabinet is frequency-controlled. If it is lower than or equal to the first threshold of the steam temperature evaluation value of the gas steam cabinet, there is no need to adjust the gas valve of the gas steam cabinet. The steam humidity evaluation value of the gas steam cabinet during the monitoring period is compared with the second threshold value of the steam humidity evaluation value of the gas steam cabinet. If the steam humidity evaluation value of the gas steam cabinet during the monitoring period is higher than the second threshold value of the steam humidity evaluation value of the gas steam cabinet, the water inlet of the gas steam cabinet is frequency-controlled. If it is lower than or equal to the second threshold value of the steam humidity evaluation value of the gas steam cabinet, there is no need to adjust the water inlet of the steam cabinet. The steam pressure evaluation value of the gas steam cabinet during the monitoring period is compared with the third threshold value of the steam pressure evaluation value of the gas steam cabinet. If the steam pressure evaluation value of the gas steam cabinet during the monitoring period is higher than the third threshold value of the steam pressure evaluation value of the gas steam cabinet, the opening of the steam valve of the gas steam cabinet is frequency-controlled. If it is lower than or equal to the third threshold value of the steam pressure evaluation value of the gas steam cabinet, there is no need to adjust the steam valve of the gas steam cabinet. If the frequency conversion control demand index of the gas steam cabinet in a certain monitoring period is lower than or equal to the frequency conversion control demand index safety threshold of the gas steam cabinet stored in the database, frequency conversion control is not required; After the frequency conversion control is completed, the frequency conversion control demand index of the gas steam cabinet in the monitoring period is recalculated and compared with the frequency conversion control demand index safety threshold of the gas steam cabinet stored in the database to determine whether the frequency conversion control is completed; The gas valve of the gas steam cabinet, the water intake of the steam cabinet and the number of times the steam valve is adjusted are recorded. When the number of adjustments reaches the specified number of adjustments, an early warning prompt is issued.

3. According to the intelligent frequency conversion control system of the gas steam cabinet according to claim 1, it is characterized in that: After cooking is finished, the gas steam cabinet is subjected to residual heat control, and the specific process is as follows: After the cooking process is completed, the gas valve of the gas steam cabinet is closed, and the steam temperature inside the gas steam cabinet is continuously monitored. If the steam temperature inside the gas steam cabinet is detected to be lower than the preset temperature threshold, it will automatically enter the insulation mode.

4. According to the intelligent frequency conversion control system of the gas steam cabinet according to claim 1, it is characterized in that: The steam temperature and pressure in the gas steam cabinet and the gas concentration in the space where the gas steam cabinet is located are monitored, and a safety warning is issued. The specific process is as follows: When it is monitored that the steam temperature in the gas steam cabinet exceeds the steam temperature safety threshold of the gas steam cabinet, the gas supply is reduced and an alarm is sounded. When it is monitored that the steam pressure in the gas steam cabinet exceeds the steam pressure safety threshold of the gas steam cabinet, the gas supply is reduced, the water intake of the steam cabinet is increased and an alarm is sounded. When it is monitored that the gas concentration of the gas steam cabinet exceeds the gas concentration safety threshold of the gas steam cabinet, the gas valve is closed and an alarm is sounded.

5. An intelligent frequency conversion control method for a gas steam cabinet, characterized in that: include: Obtaining cooking parameters of a cooking mode of a gas steam cabinet; Receive heating instructions, control the gas steam cabinet to cook based on cooking parameters, set monitoring time periods, monitor and analyze the cooking process, and obtain the frequency conversion control demand index of the gas steam cabinet in each monitoring time period; According to the frequency conversion control demand index of the gas steam cabinet in each monitoring time period, the gas steam cabinet is frequency-controlled, and after cooking is completed, the gas steam cabinet is subjected to residual heat control; Monitor the steam temperature, pressure and gas concentration in the gas steam cabinet and issue safety warnings; The cooking parameters of the cooking mode of the gas steam cabinet include: cooking time, reference cooking temperature, reference cooking humidity, and reference cooking pressure; The receiving of heating instructions, controlling the gas steam cabinet to cook based on cooking parameters, setting a monitoring time period, and monitoring and analyzing the cooking process are specifically analyzed as follows: Receive cooking parameters of a cooking mode of a gas steam cabinet, cook food in the gas steam cabinet, set a monitoring time period, and monitor the maximum steam temperature, minimum steam temperature, maximum steam humidity, minimum steam humidity, maximum steam pressure, and minimum steam pressure in the gas steam cabinet in each monitoring time period; The differences between the highest steam temperature and the lowest steam temperature, the highest steam humidity and the lowest steam humidity, and the highest steam pressure and the lowest steam pressure in the gas steam cabinet in each monitoring time period are calculated respectively to obtain the temperature difference, humidity difference and pressure difference in the steam cabinet in each monitoring time period; The cooking process is monitored and analyzed, and the specific analysis is as follows: Analyze the maximum steam temperature in the gas steam cabinet in each monitoring time period, the reference cooking temperature and the temperature difference in the gas steam cabinet in each monitoring time period, and obtain the steam temperature evaluation value of the gas steam cabinet in each monitoring time period; Analyze the maximum steam humidity in the gas steam cabinet in each monitoring time period, the reference cooking humidity and the humidity difference in the gas steam cabinet in each monitoring time period, and obtain the steam humidity evaluation value of the gas steam cabinet in each monitoring time period; Analyze the maximum steam pressure in the gas steam cabinet in each monitoring time period, the reference cooking pressure and the pressure difference in the gas steam cabinet in each monitoring time period, and obtain the steam pressure evaluation value of the gas steam cabinet in each monitoring time period; The specific process of obtaining the frequency conversion control demand index of the gas steam cabinet in each monitoring time period is as follows: Extract the steam temperature evaluation value, steam humidity evaluation value and steam pressure evaluation value of the gas steam cabinet in each monitoring time period, and process them to obtain the variable frequency control demand index of the gas steam cabinet in each monitoring time period; The specific analysis conditions of the frequency conversion control demand index of the gas steam cabinet in each monitoring time period are as follows: ； In the formula, represents the frequency conversion control demand index of the gas steam cabinet in the i-th monitoring time period, represents the steam temperature evaluation value of the gas steam cabinet during the i-th monitoring period, represents the steam humidity evaluation value of the gas steam cabinet during the i-th monitoring period, represents the steam pressure evaluation value of the gas steam cabinet during the i-th monitoring period, Indicates the weight factor corresponding to the set steam temperature evaluation value of the gas steam cabinet, Indicates the weight factor corresponding to the steam humidity assessment value of the set gas steam cabinet, It represents the weight factor corresponding to the steam pressure evaluation value of the set gas steam cabinet, e is a natural constant, , m represents the total number of monitoring time periods.

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