Steam generator suitable for fast food cooking operation

Abstract

The utility model relates to the technical field of fast food cooking operation vehicle processing, and discloses a steam generator suitable for fast food cooking operation, which comprises a framework module, a combustion system, a hearth system, a water circulation system, an intelligent control module and a waste heat recoverer, a control panel arranged on the inner surface of the shell is installed on the framework, and a display panel is installed at the corresponding position of the outer surface of the shell. A combustor is mounted at the bottom in the framework, a waste heat recoverer is arranged in a flue of the combustor, a hearth is mounted above the combustor, and the waste heat recoverer and the hearth are connected with a water supply port and a water outlet through a water circulation system; a steam opening is formed in the top of the hearth, a liquid level meter, a temperature sensor, a liquid level sensor and a pressure sensor which are connected with the control panel are installed on the side wall of the hearth, and a pressure gauge, a pressure switch and a safety valve which are connected with the control panel are installed on the top of the hearth.

Description

Technical Field

[0001] This utility model relates to the field of fast food cooking vehicle processing technology, and in particular to a steam heat source supply device suitable for vehicle-mounted equipment such as fast food (meal) processing steamers, steam pots, food reheating equipment, and high-temperature sterilizers, specifically a steam generator suitable for fast food cooking operations. Background Technology

[0002] Steam generators are important heat energy conversion devices, widely used in many fields such as industry, energy, medical, and food processing. Their basic principle is to heat water to boiling point, convert it into steam, and deliver it to the required equipment or parts. The main methods include fuel heating, electric heating, and nuclear heating.

[0003] Traditional steam generators have several drawbacks. In terms of application scenarios, they are mostly designed for industrial or fixed locations, are large in size, and have slow start-up times, failing to meet the mobile and rapid operational requirements of fast food delivery vehicles. Firstly, traditional steam generators lack the ability to adapt and adjust in high-altitude, low-pressure environments, causing fluctuations in processing efficiency. Secondly, their control methods are relatively crude, relying on manual adjustment of heat and water levels, resulting in unstable steam pressure and inconsistent food quality. Furthermore, even after miniaturization and integration, traditional steam generators are limited by space constraints, leading to the direct discharge of waste heat with the hot steam, resulting in significant energy waste. Utility Model Content

[0004] To address a series of problems, such as the inability of traditional steam generators to be adapted to fast food cooking carts, poor adaptability to high altitudes, inefficient processing and inconsistent food quality due to rough control, and energy waste caused by waste heat emissions, this invention provides a steam generator suitable for fast food cooking operations.

[0005] This utility model provides a steam generator suitable for fast food cooking operations, including a frame module, a combustion system, a furnace system, a water circulation system, an intelligent control module, and a waste heat recovery unit. The frame module includes a frame fitted with a shell, on which a control board is installed on the inner surface of the shell, and a display panel is installed at a corresponding position on the outer surface of the shell. A burner is installed at the bottom inside the frame, and a waste heat recovery unit is installed in the flue of the burner. A furnace is installed above the burner, and the waste heat recovery unit and the furnace are connected to a water supply port and a water outlet through the water circulation system. A steam port is opened at the top of the furnace, and a level gauge, a temperature sensor, a liquid level sensor, and a pressure sensor connected to the control board are installed on the side wall of the furnace. A pressure gauge, a pressure switch, and a safety valve connected to the control board are installed at the top of the furnace.

[0006] During implementation, it includes a frame module, combustion system, furnace system, water circulation system, intelligent control module, and waste heat recovery unit.

[0007] The skeleton module includes a skeleton with a shell, on which a control board is installed on the inner surface of the shell, and a display panel is installed at a corresponding position on the outer surface of the shell. It is the hardware control platform and software operation platform of the control system, which completes the acquisition of external sensor data, controls the burner and water pump to coordinate their work, and meets the requirements of steam generator working status control and working parameter acquisition. The display panel includes status display and human-machine interaction input, and displays the device's status parameters and fault alarm information.

[0008] The burner is installed at the bottom of the frame, and the flue of the burner is equipped with a waste heat recovery device. The waste heat recovery device significantly reduces energy consumption. The furnace is installed above the burner. The burner is connected to the oil inlet through an oil pipe. An oil filter and an oil pump are installed in sequence on the oil pipe. The oil pump and the burner are connected to the control board through a combustion controller.

[0009] The waste heat recovery unit is connected to the furnace via a water circulation system, which includes a water supply port and a water outlet. This allows the entire steam generator to circulate water through solenoid valves under the control of the control system, thus completing boiler water replenishment, blowdown, and drainage. Specifically, the waste heat recovery unit's inlet is connected to the water supply port via a first pipeline, and its outlet is connected to the furnace inlet at the bottom of the furnace via a second pipeline. The second pipeline is connected to the drain port via a third pipeline, and the third pipeline is connected to the first pipeline via a fourth pipeline. A water pump and an inlet solenoid valve are sequentially installed at the front end of the first pipeline at the fourth pipeline interface. An evacuation solenoid valve and a blowdown solenoid valve are respectively installed at both ends of the third pipeline at the fourth pipeline interface. The inlet solenoid valve, evacuation solenoid valve, and blowdown solenoid valve are each connected to the control board for signal transmission.

[0010] The top of the furnace has a steam port. The steam generated after the water in the furnace boils is sent to the next process (such as a steam box) through the steam port. The side wall of the furnace is equipped with a level gauge, temperature sensor, liquid level sensor and pressure sensor connected to the control panel. The top of the furnace is equipped with a pressure gauge, pressure switch and safety valve connected to the control panel.

[0011] The signal acquisition ports of the control board are connected to the temperature sensor, liquid level sensor, pressure sensor and altitude sensor respectively, mainly to provide the basis for the control logic of the control board. Among them, the altitude sensor adjusts the air-fuel ratio to adapt to the high-altitude environment.

[0012] During operation, after starting the equipment via the control board, the control board controls the water circulation system to perform water filling. The control board sends a water filling signal to the water inlet solenoid valve, the water pump starts, and the water enters the waste heat recovery unit through the first pipeline. In the waste heat recovery unit, the waste heat of the hot flue gas in the flue is absorbed for preheating. The water then enters the furnace through the outlet of the waste heat recovery unit via the second pipeline. During the initial water filling, the liquid level sensor detects the water level in the furnace. When the water level reaches the upper limit, the control board controls the burner to heat the water. The firepower can be adjusted according to different modes. If automatic water replenishment is performed during operation, the control board will automatically replenish water according to the change of operating mode or the liquid level height collected by the liquid level sensor to ensure that the water level is between the highest and lowest values. After being heated by the burner in the furnace, the hot steam is discharged from the steam port to enter the next process.

[0013] In signal control, temperature sensors, level sensors, pressure sensors, and altitude sensors convert the real-time data they collect into electrical signals such as 4-20mA or voltage, which are then transmitted to the control board. After the program runs on the control board, it controls the opening and closing of the solenoid valve, thereby realizing the water inlet, drainage, and sewage discharge of the water circulation system, as well as the ignition and shutdown functions of the combustion system. At the same time, the real-time dynamic output of the steam generator is displayed on the display panel, and users can perform start-stop control, fire control, and other operations through the control panel.

[0014] The pressure switch is connected in series with the control board to control the burner. The pressure switch is set with a threshold value of 100 kPa. When the pressure exceeds the threshold, the pressure switch is mechanically triggered to shut down the burner.

[0015] In low-temperature environments, a drainage operation is required before shutting down the steam generator to prevent the water pipes from freezing and cracking. The inlet solenoid valve is closed, while the drain solenoid valve and the blowdown solenoid valve are opened to drain the residual water in the waste heat recovery unit and the furnace.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention provides a steam generator suitable for fast food cooking operations. Through the integrated layout of the frame, the combustion system, water circulation system, waste heat recovery device and other modules are fully arranged. The overall volume is reduced compared with traditional steam generators, which can be adapted to the small space of the vehicle and can greatly improve the processing speed of cooking operations and ensure the processing quality.

[0018] In terms of synergistic efficiency of waste heat recovery and safety structure, the waste heat recovery device is used to extend the flue gas path and increase the heat exchange area through flue design, so as to recover the waste heat in the hot steam, improve the heat energy recovery rate, and reduce fuel consumption.

[0019] Improved processing speed: The burner utilizes a pre-film evaporator combustion method, controls the fan speed and inlet damper by detecting environmental parameters to compensate for changes in air density, and configures the air-fuel ratio according to the air-fuel ratio requirements to achieve efficient combustion.

[0020] Process optimization: By using software to precisely control the working status of equipment and optimize the workflow, the entire processing operation is under precise control, improving processing efficiency while ensuring processing quality.

[0021] Global adaptability: By using an altitude sensor to obtain altitude information, the working status is adjusted according to the air pressure environment at different altitudes to ensure processing capabilities in high-altitude, low-pressure environments.

[0022] Enhanced information technology capabilities: The system hardware has reserved control interfaces, which can be connected to centralized control equipment or host computers to realize remote centralized control of equipment, and have functions such as fault alarm, reporting, and storage. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 This is a diagram of the pipe connections in a water circulation system. The arrows indicate the direction of water flow when water is being supplied.

[0025] Figure 3 This is an exploded view of the present invention.

[0026] Figure 4 This is a schematic diagram of the electrical control of this utility model.

[0027] The markings in the image are as follows:

[0028] L1-First pipeline, L2-Second pipeline, L3-Third pipeline, L4-Fourth pipeline, L5-Oil pipeline, YV1-Water inlet solenoid valve, YV2-Drain solenoid valve, YV3-Sewage discharge solenoid valve;

[0029] 1-Waste heat recovery unit, 2-Furnace, 3-Burner, 4-Water pump, 5-Water supply port, 6-Drain port, 7-Water inlet, 8-Water outlet, 9-Furnace water inlet, 10-Outer shell, 11-Control panel, 12-Display panel, 13-Steam port, 14-Temperature sensor, 15-Pressure sensor, 16-Level sensor, 17-Level gauge, 18-Oil filter, 19-Oil pump, 20-Oil inlet, 21-Pressure gauge, 22-Pressure switch, 23-Safety valve, 24-Flue. Detailed Implementation

[0030] The specific embodiments of this utility model will now be described with reference to the accompanying drawings.

[0031] A steam generator suitable for fast food cooking operations, such as Figures 1-4 As shown, it includes a frame module, a combustion system, a furnace system, a water circulation system, an intelligent control module, and a waste heat recovery unit 1.

[0032] The skeleton module includes a skeleton equipped with a housing 10. A control board 11 is mounted on the skeleton and disposed on the inner surface of the housing 10. A display panel 12 is mounted at a corresponding position on the outer surface of the housing 10. The operating temperature of the control board 11 is designed to meet the requirements of -41℃ to +70℃. The display panel includes a status display and human-machine interaction input, and displays the device's status parameters and fault alarm information. In this embodiment, the display panel is connected to the control board 11 via a 20-pin 2.54mm horn-shaped connector cable.

[0033] The burner 3 is installed at the bottom of the frame, and the waste heat recovery device 1 is installed in the flue 24 of the burner 3. The waste heat recovery device 1 significantly reduces energy consumption. The furnace 2 is installed above the burner 3. The burner 3 is connected to the oil inlet 20 through the oil pipe L5. The oil filter 18 and the oil pump 19 are installed in sequence on the oil pipe L5. The oil pump 19 and the burner 3 are connected to the control board 11 through the combustion controller.

[0034] Waste heat recovery unit 1 and furnace 2 are connected to water supply port 5 and water outlet 8 through a water circulation system, enabling the entire steam generator to achieve water circulation through solenoid valves under the control of the control system, thus completing boiler water replenishment, sewage discharge and drainage. Specifically, the water inlet 7 of waste heat recovery unit 1 is connected to water supply port 5 through the first pipeline L1, and the water outlet 8 of waste heat recovery unit 1 is connected to furnace water inlet 9 at the bottom of the furnace through the second pipeline L2. The second pipeline L2 is connected to drain port 6 through the third pipeline L3, and the third pipeline L3 is connected to the first pipeline L1 through the fourth pipeline L4. The first pipeline L1 is equipped with a water pump 4 and a water inlet solenoid valve YV1 at the front end of the fourth pipeline L4 interface. The third pipeline L3 is equipped with an empty solenoid valve YV2 and a sewage discharge solenoid valve YV3 at both ends of the fourth pipeline L4 interface. The water inlet solenoid valve YV1, the empty solenoid valve YV2, and the sewage discharge solenoid valve YV3 are each connected to the control board 11 for signal transmission.

[0035] A steam inlet 13 is located at the top of the furnace chamber 2. Steam generated after the water in the furnace chamber 2 boils is sent to the next process, such as a steamer, through the steam inlet 13. In this embodiment, different working modes, namely pressurized operation and normal pressure operation, can be achieved by using a pressure gauge and a pressure switch. The normal pressurized operation pressure does not exceed 80 kPa, which is the working pressure within the allowable range of the safety valve. The pressurized operation mode can be used to steam rice, while the normal pressure operation mode can be used to steam buns, reheat food, etc. A level gauge 17, a temperature sensor 14, a level sensor 16, and a pressure sensor 15 connected to the control board 11 are installed on the side wall of the furnace chamber 2. A pressure gauge 21, a pressure switch 22, and a safety valve 23 connected to the control board 11 are installed on the top of the furnace chamber 2.

[0036] The signal acquisition ports of the control board 11 are connected to the temperature sensor 14, the liquid level sensor 16, the pressure sensor 15, and the altitude sensor, respectively, mainly to provide a basis for the control logic of the control board 11. Among them, the altitude sensor adjusts the air-fuel ratio to adapt to the high-altitude environment.

[0037] To enable communication with external devices and support centralized management of the entire vehicle, in this embodiment, the control board 11 is equipped with a CAN communication interface, and a TVS protection circuit is added at the interface.

[0038] During use, after starting the equipment via the control board 11, the control board 11 controls the water circulation system to perform water filling operation. The control board 11 sends a water filling signal to the water inlet solenoid valve YV1, and the water pump 4 starts. The water enters the waste heat recovery unit 1 through the first pipeline L1. In the waste heat recovery unit 1, the waste heat of the hot flue gas in the flue is absorbed for preheating. The water enters the furnace 2 through the outlet of the waste heat recovery unit 1 via the second pipeline L2. When water is added for the first time, the liquid level sensor 16 detects the water level in the furnace 2. When the water level reaches the upper limit, the control board 11 controls the burner 3 to heat the water. The firepower can be adjusted according to different modes. If it is automatic water replenishment during operation, the control board 11 will automatically replenish water according to the change of working mode or the liquid level height collected by the liquid level sensor 16 to ensure that the water level is between the highest and lowest values. After being heated by the burner in the furnace 2, the hot steam is discharged from the steam port 13 to enter the next process.

[0039] In signal control, temperature sensor 14, liquid level sensor 16, pressure sensor 15, and altitude sensor convert the real-time data they collect into electrical signals such as 4-20mA or voltage, which are then transmitted to control board 11. After the program in control board 11 runs, it controls the opening and closing of solenoid valves, thereby realizing the water inlet, drainage, and sewage discharge of the water circulation system, as well as the ignition and shutdown functions of the combustion system. At the same time, the real-time dynamic output of the steam generator is displayed on the display panel, and users can perform start-stop control, fire control, and other operations through the control panel.

[0040] The pressure switch is connected in series with the control board to control the burner. The pressure switch is set with a threshold value of 100 kPa. When the pressure exceeds the threshold, the pressure switch is mechanically triggered to shut down the burner.

[0041] In low-temperature environments, a drainage operation is required before shutting down the steam generator to prevent the water pipes from freezing and cracking. The inlet solenoid valve YV1 is closed, and the vent solenoid valve YV2 and the drain solenoid valve YV3 are opened to drain the residual water in the waste heat recovery unit 1 and the furnace 2.

[0042] The scope of protection claimed by this utility model is not limited to the specific embodiments described above. Moreover, for those skilled in the art, this utility model can have various modifications and alterations. Any modifications, improvements, and equivalent substitutions made within the concept and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A steam generator suitable for fast food cooking operations, comprising a skeleton module, a combustion system, a furnace system, a water circulation system, an intelligent control module and a waste heat recovery unit (1), characterized in that: The skeleton module comprises a skeleton equipped with a shell (10), a control panel (11) is installed on the skeleton and arranged on the inner surface of the shell (10), and a display panel (12) is installed on the outer surface of the shell (10) at a corresponding position; The bottom of the skeleton is provided with a burner (3), and a waste heat recovery device (1) is arranged in the flue of the burner (3); the burner (3) is provided with a hearth (2) above; the waste heat recovery device (1) and the hearth (2) are connected with a water supply port (5) and a water outlet (8) through a water circulation system; a steam port (13) is formed in the top of the hearth (2); a liquid level meter (17), a temperature sensor (14), a liquid level sensor (16) and a pressure sensor (15) are installed on the side wall of the hearth (2) and connected with the control panel (11); a pressure gauge (21), a pressure switch (22) and a safety valve (23) are installed on the top of the hearth (2) and connected with the control panel (11).

2. A steam generator suitable for fast food cooking operations according to claim 1, characterized in that: The water inlet (7) of the waste heat recovery device (1) is connected with the water supply port (5) through a first pipeline (L1); the water outlet (8) of the waste heat recovery device (1) is connected with the hearth water inlet (9) at the bottom of the hearth through a second pipeline (L2); the second pipeline (L2) is connected with a drainage port (6) through a third pipeline (L3); the third pipeline (L3) is connected with the first pipeline (L1) through a fourth pipeline (L4).

3. A steam generator suitable for fast cooking operations according to claim 2, characterized in that: The first pipeline (L1) is provided with a water pump (4) and a water inlet electromagnetic valve (YV1) in sequence at the front end of the fourth pipeline (L4) interface; the third pipeline (L3) is provided with an emptying electromagnetic valve (YV2) and a blowdown electromagnetic valve (YV3) at both ends of the fourth pipeline (L4) interface; the water inlet electromagnetic valve (YV1), the emptying electromagnetic valve (YV2) and the blowdown electromagnetic valve (YV3) are respectively connected with the control panel (11) in signal.

4. A steam generator suitable for fast food cooking operations according to claim 1, characterized in that: The burner (3) is connected with an oil inlet (20) through an oil pipe (L5); the oil pipe (L5) is provided with an oil filter (18) and an oil pump (19) in sequence; the oil pump (19) and the burner (3) are connected with the control panel (11) through a combustion controller.

5. A steam generator suitable for fast food cooking operations according to claim 1, characterized in that: The signal acquisition port of the control panel (11) is connected with the temperature sensor (14), the liquid level sensor (16), the pressure sensor (15) and the altitude sensor.

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