Oil temperature overheating safety protection device for frying machine
By using multiple temperature sensors and lifting frame structures in the fryer, combined with glass fiber insulation layer and STM32 microcontroller control, the fire risk caused by inaccurate oil temperature monitoring is solved, and the accurate monitoring of oil temperature and timely power outage protection is achieved.
Patent Information
- Application Number
- CN202422389501.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Existing fryers usually only have a temperature probe at the bottom of the oil tank. If the probe fails, the oil temperature cannot be monitored normally, resulting in continuous heating of the heating module, which may cause cooking oil to burn and cause fire.
Multiple temperature sensors and lifting frame structures are adopted, combined with glass fiber insulation layer and STM32 microcontroller control, to achieve multi-point monitoring of oil temperature and timely power-off protection. The lifting frame keeps the sensor under the oil surface through electric push rods to avoid sensor aging.
Accurate monitoring of oil temperature and timely power outage, avoid combustion of edible oil, and protect the safety of fryer equipment.
Smart Images
Figure CN223080933U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of frying machines, in particular to a safety protection device for overheating oil temperature of a frying machine. Background Art
[0002] A fryer is a type of equipment specifically used for frying food. It is widely used in catering, food processing and other fields. In food production companies, production workshops usually use large-scale electric heating tunnel fryers that can fry a variety of foods quickly and in large quantities.
[0003] Existing fryers usually only have one temperature probe at the bottom of the oil tank. If this temperature probe at the bottom fails, it will not be able to monitor the oil temperature normally. In this case, even if the oil temperature reaches the set upper temperature limit, the heating module cannot receive the signal to stop working. As a result, the heating module will continue to heat, causing the temperature of the edible oil in the oil tank to continue to rise. If the oil temperature continues to rise to the ignition point, the edible oil may catch fire and cause a fire. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In view of the deficiencies in the prior art, the utility model provides a frying machine oil temperature overheating safety protection device, which solves the technical problem that the existing frying machines are usually only provided with a temperature probe at the bottom of the oil tank. If the temperature probe at the bottom fails, it will not be able to monitor the oil temperature normally. In this case, even if the oil temperature reaches the set temperature upper limit, the heating module cannot receive the signal to stop working. As a result, the heating module will continue to heat, causing the temperature of the edible oil in the oil tank to continue to rise. If the oil temperature continues to rise to the ignition point, the edible oil may catch fire and burn, thereby causing a fire.
[0006] (II) Technical solution
[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:
[0008] An overheating safety protection device for the oil temperature of a fryer, comprising a fryer main body. An elevator is slidably installed inside the fryer main body. A fiberglass heat insulation layer is installed inside the elevator. A temperature sensor is installed inside the elevator. A control box is fixedly installed at the side end of the fryer main body. A display screen is installed on the control box. An electric heating plate is fixedly installed inside the fryer main body. A relay, a fy-wk-jh temperature control main board and an STM32 single-chip microcomputer are installed inside the control box. The electric heating plate is connected to the normally open pin of the relay inside the control box through a wire. The temperature sensor is connected to the temperature control main board inside the control box through a wire. The temperature control main board is connected to the STM32 single-chip microcomputer through a wire. The STM32 single-chip microcomputer is connected to the control pin of the relay through a wire. A protective cover is fixedly installed at the top end of the fryer main body. An electric push rod is fixedly installed at the side end of the protective cover. A motor is fixedly installed at the side end of the fryer main body. The bottom end of the electric push rod is fixedly connected to the elevator. The electric push rod is connected to the STM32 single-chip microcomputer through a wire. Transmission rods are symmetrically and rotatably installed inside the fryer main body. Transmission wheels are fixedly installed at the side ends of the transmission rods. A transmission belt is installed between the transmission wheels.
[0009] Preferably, a feeding roller is installed between the transmission rods.
[0010] Preferably, a motor is fixedly installed at the side end of the fryer main body; the output shaft of the motor is fixedly connected to the transmission wheel.
[0011] (III) Beneficial effects
[0012] First, when the oil temperature is higher than the set temperature, the temperature sensor sends a signal to make the single-chip microcomputer cut off the power supply of the relay, so that the closed normally open contact is disconnected, and the power supply of the electric heating plate is cut off. A plurality of temperature sensors are installed on the elevator. When one temperature sensor fails, it will not affect the temperature control monitoring. The fiberglass heat insulation layer inside the elevator can play a heat insulation role, avoiding the aging of the wire connecting the temperature sensor due to being in a high-temperature environment for a long time. By monitoring the oil temperature through a plurality of temperature sensors, the power supply of the electric heating plate can be timely cut off at high temperature, achieving the effects of protecting the fryer and avoiding the cooking oil from catching fire and burning.
[0013] Second, the oil inside the fryer main body will adhere to the fried food, resulting in a decrease in the liquid level of the cooking oil inside the fryer main body. During this process, the electric push rod will slowly control the elevator to slide down, so that the temperature sensor can always be kept below the liquid level, avoiding the temperature sensor from being exposed to the air due to the reduction of the cooking oil, achieving the effect that the temperature sensor can accurately monitor the oil temperature. Description of the drawings
[0014] The above description is only an overview of the technical solution of the present utility model. In order to better understand the technical means of the present utility model and be implemented in accordance with the content of the description, the following is a detailed description of the preferred embodiments of the present utility model in conjunction with the accompanying drawings as follows.
[0015] Figure 1 It is a structural diagram of the main body of the fryer of the present utility model;
[0016] Figure 2 It is a structural diagram of the feeding roller of the present utility model;
[0017] Figure 3 It is a structural diagram of the transmission rod of the present utility model;
[0018] Figure 4 It is a structural diagram of the electric heating plate of the present utility model;
[0019] Figure 5 It is a sectional structural diagram of the lifting frame of the present utility model.
[0020] Legend description: 1. Main body of the fryer; 2. Lifting frame; 3. Fiberglass heat insulation layer; 4. Temperature sensor; 5. Control box; 6. Display screen; 7. Electric heating plate; 8. Electric push rod; 9. Protective cover; 11. Motor; 12. Driving wheel; 13. Transmission rod; 14. Transmission belt; 15. Feeding roller; 16. Power cord. Specific implementation mode
[0021] Embodiments of the present application provide an overheat safety protection device for the oil temperature of a fryer, effectively solving the technical problem that existing fryers usually only have a temperature probe at the bottom of the oil tank. If this bottom temperature probe fails, it will not be able to normally monitor the oil temperature. In this case, even if the oil temperature reaches the set upper limit of the temperature, the heating module cannot receive a signal to stop working. As a result, the heating module will continue to heat, causing the temperature of the edible oil in the oil tank to continuously rise. If the oil temperature continues to rise to the ignition point, the edible oil may catch fire and burn, thus triggering a fire. When the oil temperature is higher than the set temperature, the temperature sensor sends a signal to make the single-chip microcomputer cut off the power of the relay, so that the normally open contact that is closed is disconnected, and the power supply to the electric heating plate is cut off. A plurality of temperature sensors are installed on the lifting frame. When one temperature sensor fails, it will not affect the temperature control monitoring. The fiberglass heat insulation layer inside the lifting frame can play a heat insulation role, avoiding the wires connecting the temperature sensors from aging due to being in a high-temperature environment for a long time. By monitoring the oil temperature with a plurality of temperature sensors, the power supply to the electric heating plate can be timely disconnected at high temperatures, achieving the effect of protecting the fryer and preventing the edible oil from catching fire and burning. The oil inside the fryer main body will adhere to the fried food, resulting in a decrease in the liquid level of the edible oil inside the fryer main body. During this process, the electric push rod will slowly control the lifting frame to slide down, so that the temperature sensors can always be kept below the liquid level, avoiding the temperature sensors being exposed to the air due to the reduction of the edible oil, achieving the effect that the temperature sensors can accurately monitor the oil temperature.
[0022] Embodiment
[0023] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shown, the technical solution in the embodiments of the present application effectively solves the technical problem that existing fryers usually only have a temperature probe at the bottom of the oil tank. If this bottom temperature probe fails, it will not be able to normally monitor the oil temperature. In this case, even if the oil temperature reaches the set upper limit of the temperature, the heating module cannot receive a signal to stop working. As a result, the heating module will continue to heat, causing the temperature of the edible oil in the oil tank to continuously rise. If the oil temperature continues to rise to the ignition point, the edible oil may catch fire and burn, thus triggering a fire. The general idea is as follows:
[0024] In view of the problems existing in the prior art, the utility model provides an overheat safety protection device for the oil temperature of a fryer, which includes a fryer main body 1. An elevator 2 is slidably installed inside the fryer main body 1. A fiberglass heat insulation layer 3 is installed inside the elevator 2. A temperature sensor 4 is installed inside the elevator 2. A control box 5 is fixedly installed at the side end of the fryer main body 1. A display screen 6 is installed on the control box 5. An electric heating plate 7 is fixedly installed inside the fryer main body 1. A relay, a fy-wk-jh temperature control main board and an STM32 single-chip microcomputer are installed inside the control box 5. The electric heating plate 7 is connected to the normally open pin of the relay inside the control box 5 through a wire.
[0025] The temperature sensor 4 is connected to the temperature control main board inside the control box 5 through a wire. The temperature control main board is connected to the STM32 single-chip microcomputer through a wire. The STM32 single-chip microcomputer is connected to the control pin of the relay through a wire. A protective cover 9 is fixedly installed at the top end of the fryer main body 1. An electric push rod 8 is fixedly installed at the side end of the protective cover 9. A motor 11 is fixedly installed at the side end of the fryer main body 1.
[0026] The bottom end of the electric push rod 8 is fixedly connected to the elevator 2. The electric push rod 8 is connected to the STM32 single-chip microcomputer through a wire. Transmission rods 13 are symmetrically and rotatably installed inside the fryer main body 1. Transmission wheels 12 are fixedly installed at the side ends of the transmission rods 13. A transmission belt 14 is installed between the transmission wheels 12. A feeding roller 15 is installed between the transmission rods 13. A motor 11 is fixedly installed at the side end of the fryer main body 1. The output shaft of the motor 11 is fixedly connected to the transmission wheel 12.
[0027] Working principle:
[0028] First step, the relay, the fy-wk-jh temperature control main board and the STM32 single-chip microcomputer are connected by wires. When in use, the power supply line 16 supplies power to the relay, the fy-wk-jh temperature control main board, the STM32 single-chip microcomputer and the display screen 6. At the same time, the power supply line 16 is connected to the relay through a wire. When the device starts, the temperature sensor 4 will detect the oil temperature inside the deep fryer main body 1, and the temperature detected by the temperature sensor 4 can be displayed on the display screen 6. If the oil temperature is lower than the set temperature, the temperature sensor 4 can send an electrical signal to the temperature control main board, and the temperature control main board sends a signal to the single-chip microcomputer through a wire. The single-chip microcomputer will control the normally open contact of the relay to close, so that the electric heating plate 7 is powered on to heat the oil until the device temperature is reached. When the oil temperature is higher than the set temperature, the temperature sensor 4 sends a signal to make the single-chip microcomputer cut off the power supply of the relay, so that the closed normally open contact is disconnected, and the power supply of the electric heating plate 7 is cut off. A plurality of temperature sensors 4 are installed on the lifting frame 2. When one temperature sensor 4 fails, it will not affect the temperature control monitoring. The fiberglass heat insulation layer 3 inside the lifting frame 2 can play a heat insulation role, avoiding the wires connecting the temperature sensors 4 from aging due to being in a high-temperature environment for a long time. By monitoring the oil temperature through a plurality of temperature sensors 4, the power supply of the electric heating plate 7 can be timely cut off at high temperatures, achieving the effects of protecting the deep fryer and avoiding the edible oil from catching fire and burning.
[0029] Second step, when the oil temperature reaches the set standard, place the food to be fried on the feeding roller 15. The motor 11 starts to drive the driving wheel 12 to rotate. The driving wheel 12 will make the driving rod 13 rotate. The driving rod 13 will drive the feeding roller 15 to move through the above-mentioned groove, and then frying can be carried out. The oil inside the deep fryer main body 1 will adhere to the fried food, resulting in a decrease in the liquid level of the edible oil inside the deep fryer main body 1. During this process, the electric push rod 8 will slowly control the lifting frame 2 to slide down, so that the temperature sensor 4 can always be kept below the liquid level, avoiding the temperature sensor 4 from being exposed to the air due to the reduction of the edible oil, achieving the effect that the temperature sensor 4 can accurately monitor the oil temperature.
[0030] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly illustrating the present invention, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.
Claims
1. An overheat safety protection device for the oil temperature of a fryer, comprising a fryer main body (1), characterized in that, A lifting frame (2) is slidably installed inside the deep fryer main body (1). A fiberglass heat insulation layer (3) is installed inside the lifting frame (2). A temperature sensor (4) is installed inside the lifting frame (2). A control box (5) is fixedly installed at the side end of the deep fryer main body (1). A display screen (6) is installed on the control box (5). An electric heating plate (7) is fixedly installed inside the deep fryer main body (1); Among them, a relay, a fy-wk-jh temperature control main board and an STM32 single-chip microcomputer are installed inside the control box (5). The electric heating plate (7) is connected to the normally open pin of the relay inside the control box (5) through a wire. The temperature sensor (4) is connected to the temperature control main board inside the control box (5) through a wire. The temperature control main board is connected to the STM32 single-chip microcomputer through a wire. The STM32 single-chip microcomputer is connected to the control pin of the relay through a wire.
2. The overheat safety protection device for the frying oil temperature according to claim 1, characterized in that, A protective cover (9) is fixedly installed at the top end of the deep fryer main body (1). An electric push rod (8) is fixedly installed at the side end of the protective cover (9). A motor (11) is fixedly installed at the side end of the deep fryer main body (1); Among them, the bottom end of the electric push rod (8) is fixedly connected to the lifting frame (2). The electric push rod (8) is connected to the STM32 single-chip microcomputer through a wire.
3. The overheat safety protection device for the oil temperature of a frying machine according to claim 1, characterized in that Driving rods (13) are symmetrically and rotatably installed inside the deep fryer main body (1). Driving wheels (12) are fixedly installed at the side ends of the driving rods (13).
4. The safety protection device for overheated oil temperature of a frying machine according to claim 3, characterized in that, A transmission belt (14) is installed between the driving wheels (12).
5. The safety protection device for overheated oil temperature of a frying machine according to claim 3, characterized in that, Feeding rollers (15) are installed between the driving rods (13).
6. An overheat safety protection device for the oil temperature of a frying machine according to claim 1, characterized in that, A motor (11) is fixedly installed at the side end of the deep fryer main body (1); Among them, the output shaft of the motor (11) is fixedly connected to the driving wheel (12).