Food steamer capable of monitoring temperature

Abstract

The invention relates to the technical field of kitchen utensils, in particular to a steamer capable of monitoring temperature. Comprising a steam engine base, a steamer frame and steamer drawers, and the steamer frame is provided with a plurality of independent steamer cavities. The controller comprises a temperature control algorithm module (adopting a PID algorithm to accurately control temperature), a time control module, a food input heating matching module and a fault alarm module. And a display screen for displaying temperature is arranged below the temperature sensor. The steam pipe is connected with the steamer cavity and is provided with a flow valve for controlling steam. The steamer drawer is provided with a mounting plate, a heat insulation pad and a handle and is matched with the steamer cavity through a pulley, a limiting sliding groove, a sealing ring and an embedding groove. The steamer can add water through the water adding pipe, and after different chamber temperatures and time are set, the steamer base is started to generate steam to heat food. The intelligent cooking device has the advantages of accurate temperature control, personalized cooking, real-time temperature monitoring, independent chamber, convenience in operation and maintenance, fault alarm and the like, and is suitable for families and catering industries.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen appliances, in particular to a steamer capable of monitoring temperature. Background Art

[0002] Steamers originated in the Han Dynasty and are a unique flower in the Han food culture. Bamboo steamers are famous all over the world for their original flavor, non-backflow of steam water, and good color, aroma and taste. As an ancient Han handicraft. The types of bamboo steamers are mainly divided into green-skinned bamboo steamers and bamboo steamers without green skin. At present, green-skinned bamboo steamers are relatively rare, mainly because of their low price and poor quality. They were more common in the early 1980s. The bamboo steamers without green skin are mostly made of bamboo, which are bound with bamboo strips. Because the material is hard and strong, and relatively thick, part of the bamboo must be removed, leaving about 5-6 mm of bamboo strips as the main material.

[0003] However, the heating temperature of the electronic steamers currently on the market is not well controlled, and there is a lack of monitoring of the steam temperature. Therefore, in view of the above problems, a steamer with temperature monitoring is designed. Summary of the invention

[0004] The object of the present invention is to provide a steamer capable of monitoring temperature, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a steamer capable of monitoring temperature, comprising a steam engine base, a steamer frame and a steamer drawer, wherein a water supply pipe is connected to the side of the steam engine base, an exhaust pipe is arranged on one side of the back of the steam engine base, a steam pipe is connected to the top of the back of the steam engine base, a steamer frame is arranged on the top of the steam engine base, a plurality of steamer cavities are opened inside the steamer frame, a display screen is installed on the surface of the steamer frame below the steamer cavity, a temperature sensor is installed on the top of the inner cavity of the steamer cavity, a steamer drawer is placed inside the steamer cavity, a mounting plate is connected to the surface of one side of the steamer drawer, a heat insulation pad is arranged in the middle of the surface of the mounting plate, a handle is installed on the surface of the heat insulation pad, and a controller is installed on the side of the steamer frame;

[0006] The controller includes a temperature control algorithm module, a time control module, a food input heating matching module and a fault alarm module. The temperature control algorithm module adopts a PID control algorithm to accurately control the temperature in the steamer cavity. The PID algorithm continuously compares the set temperature value with the temperature value detected by the actual temperature sensor, calculates the corresponding control amount to adjust the opening of the flow valve, thereby achieving accurate control of the steam flow, thereby ensuring that the temperature in the steamer cavity can quickly and stably reach the set value and remain within the allowable error range;

[0007] The time control module is used to set the time for heating food in different steamer cavities. When the set time is reached, the steam engine base can be controlled to stop generating steam or perform corresponding prompt operations to ensure that the food is steamed within a suitable time to avoid over-steaming or under-steaming.

[0008] The food input heating matching module automatically matches the temperature and time settings suitable for the food according to the input food type information. Specifically, for vegetable food, a relatively low temperature and a short time are matched; for meat food, a relatively high temperature and a long time are matched to achieve the best steaming effect;

[0009] When the temperature sensor detects abnormal temperature or the flow valve fails, which affects the normal operation of the steamer, the fault alarm module sends out an alarm signal. The alarm signal is a sound alarm, a light alarm, or a fault information display on a display screen, so that the user can find and handle the fault in time.

[0010] Preferably, the steam pipe surface is connected to a plurality of steam pipes, one end of the steam pipe is connected to the interior of the steamer cavity, and a flow valve is installed inside the steam pipe on the outside of the steamer frame.

[0011] Preferably, the display screen displays temperature sensor detection data.

[0012] Preferably, a limiting slide groove is provided at the bottom of the inner cavity of the steamer, and a plurality of pulleys are evenly installed at the bottom of the steamer, and the pulleys are engaged with the limiting slide groove and are rollingly connected.

[0013] Preferably, an engaging groove is provided on the edge of the surface of the steamer cavity, and a sealing ring is installed on the back of the mounting plate, and the sealing ring is engaged and sealed with the engaging groove.

[0014] Preferably, the specific working steps of the temperature control algorithm module are as follows:

[0015] Step 1: The temperature sensor in the steamer cavity detects the actual temperature in real time and feeds the information back to the controller, which compares the set temperature with the actual temperature to obtain the temperature difference;

[0016] Step 2, proportional control directly adjusts the control amount according to the size of the error. When the actual temperature is lower than the set temperature, the error is positive. The controller will increase the opening of the flow valve according to the proportional relationship to allow more steam to enter the steamer cavity and increase the temperature. If the actual temperature is higher than the set temperature, the error is negative, and the controller will reduce the flow valve opening, reduce the steam flow, and reduce the temperature.

[0017] Step 3: If the actual temperature is always slightly lower than the set temperature, the proportional control can only make the temperature close to but not reach the set value. As time goes by, the integral control will continue to accumulate the impact of this error and gradually increase the flow valve opening until the temperature finally reaches the set value.

[0018] Step 4: According to the speed of temperature rise, the differential control reduces the flow valve opening in advance to suppress the rapid rise of temperature and make the temperature reach the set value more steadily;

[0019] Step 5: The controller comprehensively considers the results of the three control methods of proportion, integration and differentiation to determine the final control quantity used to adjust the opening of the flow valve. By repeating the above process continuously, the temperature in the steamer cavity can quickly and stably reach the set value and remain within the allowable error range.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] When the present invention is used, firstly, clean water is added into the steam engine base through the water adding pipe, then different foods to be steamed are placed into corresponding steamer drawers, and the steamer drawers are placed into the steamer cavity, then the temperature and time in different steamer cavities are set through the controller, and then the steam engine base is started to generate steam, and the steam is transported to the steamer cavity for steam heating through the steam pipe and the gas pipe, and the steam transport and closing are controlled by the flow valve, and the temperature in the corresponding steamer cavity is displayed on the display screen, so that the steam flow of each steamer cavity can be adjusted through the above design, which is conducive to heating different foods and convenient for monitoring the temperature of each steamer cavity, and each cavity works independently without affecting each other, which is convenient for use by small families and large catering industries;

[0022] The present invention adopts a temperature control algorithm module of the PID control algorithm, which adjusts the flow valve opening by continuously comparing the set temperature value and the temperature value detected by the actual temperature sensor, and integrates proportional, integral and differential control methods to achieve precise control of the steam flow. This allows the temperature in the steamer cavity to quickly and stably reach the set value and remain within the allowable error range, ensuring that the food is cooked at an appropriate temperature, improving the cooking effect and food quality, and the food input heating matching module can automatically match the appropriate temperature and time settings according to the type of food. For different foods, such as vegetables and meat, personalized cooking conditions can be provided to avoid problems such as food nutrient loss or over- or under-cooking due to inappropriate temperature and time, and meet the cooking requirements of different foods;

[0023] The fault alarm module of the present invention will send out an alarm signal when the temperature sensor detects abnormal temperature (such as the temperature is too high or too low beyond the normal range), or the flow valve fails (such as the steam flow cannot be normally controlled), and other faults that may affect the normal operation of the steamer occur. The alarm signal can be a sound alarm, a light alarm, or displaying fault information on a display screen, so that the user can find and handle the fault in time, thereby improving the safety and reliability of the use of the steamer. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the internal structure of the steamer cavity of the present invention;

[0026] Figure 3 It is a schematic diagram of the back structure of the present invention;

[0027] Figure 4 It is a schematic structural diagram of a steamer drawer of the present invention.

[0028] In the figure: 1. steam engine base; 2. steamer rack; 3. steamer tray; 4. water supply pipe; 5. steamer cavity; 6. limit slide groove; 7. display screen; 8. fitting groove; 9. mounting plate; 10. insulation pad; 11. handle; 12. controller; 13. temperature sensor; 14. gas supply pipe; 15. flow valve; 16. steam pipe; 17. exhaust pipe; 18. sealing ring; 19. pulley. DETAILED DESCRIPTION

[0029] 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.

[0030] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] See also Figure 1-4 The present invention provides a technical solution: a steamer capable of monitoring temperature, comprising a steam engine base 1, a steamer frame 2 and a steamer drawer 3, a water supply pipe 4 being connected to the side of the steam engine base 1, an exhaust pipe 17 being arranged on one side of the back of the steam engine base 1, a steam pipe 16 being connected to the top of the back of the steam engine base 1, a steamer frame 2 being arranged on the top of the steam engine base 1, a plurality of steamer cavities 5 being opened inside the steamer frame 2, a display screen 7 being installed on the surface of the steamer frame 2 below the steamer cavity 5, a temperature sensor 13 being installed on the top of the inner cavity of the steamer cavity 5, a steamer drawer 3 being placed inside the steamer cavity 5, a mounting plate 9 being connected to the surface of one side of the steamer drawer 3, and a heat insulation pad being arranged in the middle of the surface of the mounting plate 9 10, a handle 11 is installed on the surface of the heat insulation pad 10, and a controller 12 is installed on the side of the steamer frame 2; the controller 12 includes a temperature control algorithm module, a time control module, a food input heating matching module and a fault alarm module. The temperature control algorithm module adopts a PID control algorithm to accurately control the temperature in the steamer cavity 5. The PID algorithm continuously compares the set temperature value and the temperature value detected by the actual temperature sensor, calculates the corresponding control amount to adjust the opening of the flow valve 15, thereby achieving accurate control of the steam flow, thereby ensuring that the temperature in the steamer cavity 5 can quickly and stably reach the set value and remain within the allowable error range;

[0033] The time control module is used to set the heating time of food in different steamer cavities. When the set time is reached, the steam engine base 1 can be controlled to stop generating steam or perform corresponding prompt operations to ensure that the food is steamed within a suitable time to avoid over-steaming or under-steaming.

[0034] The food input heating matching module automatically matches the temperature and time settings suitable for the food according to the input food type information. Specifically, for vegetable food, it matches a relatively low temperature and a shorter time; for meat food, it matches a relatively high temperature and a longer time to achieve the best steaming effect;

[0035] When the temperature sensor 13 detects abnormal temperature, or the flow valve 15 fails, and a fault occurs that affects the normal operation of the steamer, the fault alarm module sends an alarm signal. The alarm signal is a sound alarm, a light alarm, or a fault information display on the display screen 7, so that the user can find and handle the fault in time.

[0036] Furthermore, the steam pipe 16 indicates that a plurality of steam pipes 16 are connected, one end of the steam pipe 16 is connected to the inside of the steamer cavity 5 , and a flow valve 15 is installed inside the steam pipe 16 on the outside of the steamer frame 2 .

[0037] Furthermore, the display screen 7 displays the detection data of the temperature sensor 13 .

[0038] Furthermore, a limiting slide groove 6 is provided at the bottom of the steamer cavity 5, and a plurality of pulleys 19 are evenly installed at the bottom of the steamer drawer 3, and the pulleys 19 are engaged with the limiting slide groove 6 and are rollingly connected.

[0039] Furthermore, an embedding groove 8 is provided on the edge of the surface of the steamer cavity 5 , and a sealing ring 18 is installed on the back of the mounting plate 9 , and the sealing ring 18 is embedded and sealed in the embedding groove 8 .

[0040] Furthermore, the specific working steps of the temperature control algorithm module are as follows:

[0041] Step 1, the temperature sensor 13 in the steamer cavity 5 detects the actual temperature in real time and feeds the information back to the controller 12, and the controller 12 compares the set temperature with the actual temperature to obtain the temperature difference;

[0042] Step 2, proportional control directly adjusts the control amount according to the size of the error. When the actual temperature is lower than the set temperature, the error is positive, and the controller will increase the opening of the flow valve 15 according to the proportional relationship to allow more steam to enter the steamer cavity 5 to increase the temperature. If the actual temperature is higher than the set temperature, the error is negative, and the controller will reduce the opening of the flow valve 15 to reduce the steam flow and reduce the temperature.

[0043] Step 3: If the actual temperature is always slightly lower than the set temperature, the proportional control can only make the temperature approach but not reach the set value. As time goes by, the integral control will continue to accumulate the impact of this error and gradually increase the opening of the flow valve 15 until the temperature finally reaches the set value.

[0044] Step 4: According to the speed of temperature rise, the differential control reduces the flow valve opening in advance to suppress the rapid rise of temperature and make the temperature reach the set value more steadily;

[0045] Step 5, the controller 12 comprehensively considers the results of the three control methods of proportion, integration and differentiation to determine the final control amount used to adjust the opening of the flow valve 15. By continuously repeating the above process, the temperature in the steamer cavity 5 can quickly and stably reach the set value and remain within the allowable error range.

[0046] When the present invention is in use, firstly, clean water is added into the steam engine base 1 through the water adding pipe 4, then different foods to be steamed are placed into the corresponding steamer trays 3, and the steamer trays 3 are placed into the steamer cavity 5, then the temperature and time in different steamer cavities 5 are set through the controller 12, and then the steam engine base 1 is started to generate steam, and the steam is transported to the steamer cavity 5 for steam heating through the steam pipe 16 and the air supply pipe 14, and the steam delivery and closing are controlled by the flow valve 15, and the display screen 7 displays the temperature in the corresponding steamer cavity 5, so that the steam flow of each steamer cavity 5 can be adjusted through the above-mentioned design, which is beneficial to heating different foods and also convenient for monitoring the temperature of each steamer cavity 5. Each cavity works independently without affecting each other, which is convenient for use by small families and large catering industries; wherein the temperature control algorithm module using the PID control algorithm continuously compares the set temperature value with the temperature value detected by the actual temperature sensor, and adjusts the opening of the flow valve 15 by combining proportional, integral and differential control methods to achieve precise control of the steam flow. This enables the temperature in the steamer cavity 5 to quickly and stably reach the set value and remain within the allowable error range, ensuring that the food is steamed at an appropriate temperature, improving the steaming effect and food quality, and at the same time, the food input heating matching module can automatically match the appropriate temperature and time settings according to the type of food. For different foods, such as vegetables and meat, personalized steaming conditions can be provided to avoid problems such as food nutrient loss or excessive or insufficient steaming caused by inappropriate temperature and time, and meet the steaming requirements of different foods. The fault alarm module will send an alarm signal when the temperature sensor 13 detects an abnormal temperature (such as the temperature is too high or too low beyond the normal range), or the flow valve 15 fails (such as being unable to control the steam flow normally), and other faults that may affect the normal operation of the steamer. The alarm signal can be a sound alarm, a light alarm, or displaying fault information on a display screen, so that users can find and handle faults in time, thereby improving the safety and reliability of the steamer.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steamer capable of monitoring temperature, comprising a steam engine base (1), a steamer frame (2) and a steamer drawer (3), characterized in that: The side of the steam engine base (1) is connected to a water supply pipe (4); the back side of the steam engine base (1) is provided with an exhaust pipe (17); the top of the back side of the steam engine base (1) is connected to a steam pipe (16); the top of the steam engine base (1) is provided with a steamer frame (2); a plurality of steamer cavities (5) are provided inside the steamer frame (2); a display screen (7) is installed on the surface of the steamer frame (2) below the steamer cavity (5); a temperature sensor (13) is installed on the top of the inner cavity of the steamer cavity (5); a steamer tray (3) is placed inside the steamer cavity (5); a mounting plate (9) is connected to the surface of one side of the steamer tray (3); a heat insulation pad (10) is provided in the middle of the surface of the mounting plate (9); a handle (11) is installed on the surface of the heat insulation pad (10); and a controller (12) is installed on the side of the steamer frame (2); The controller (12) comprises a temperature control algorithm module, a time control module, a food input heating matching module and a fault alarm module. The temperature control algorithm module adopts a PID control algorithm to accurately control the temperature in the steamer cavity (5). The PID algorithm continuously compares the set temperature value with the temperature value detected by the actual temperature sensor, calculates the corresponding control amount to adjust the opening of the flow valve (15), thereby achieving accurate control of the steam flow, thereby ensuring that the temperature in the steamer cavity (5) can quickly and stably reach the set value and remain within an allowable error range; The time control module is used to set the time for heating food in different steamer cavities. When the set time is reached, the steam engine base (1) can be controlled to stop generating steam or perform corresponding prompt operations to ensure that the food is steamed within a suitable time and to avoid over-steaming or under-steaming. The food input heating matching module automatically matches the temperature and time settings suitable for the food according to the input food type information. Specifically, for vegetable food, a relatively low temperature and a short time are matched; for meat food, a relatively high temperature and a long time are matched to achieve the best steaming effect; When the temperature sensor (13) detects abnormal temperature, or the flow valve (15) fails, and a fault occurs that affects the normal operation of the steamer, the fault alarm module sends out an alarm signal, and the alarm signal is in the form of a sound alarm, a light alarm, or a display of fault information on the display screen (7), so that the user can find and handle the fault in time.

2. A steamer capable of monitoring temperature according to claim 1, characterized in that: The steam pipe (16) indicates that a plurality of steam pipes (16) are connected, one end of the steam pipe (16) is connected to the inside of the steamer cavity (5), and a flow valve (15) is installed inside the steam pipe (16) on the outside of the steamer frame (2).

3. A steamer capable of monitoring temperature according to claim 1, characterized in that: The display screen (7) displays the detection data of the temperature sensor (13).

4. A steamer capable of monitoring temperature according to claim 1, characterized in that: A limiting slide groove (6) is provided at the bottom of the inner cavity of the steamer cavity (5), and a plurality of pulleys (19) are evenly installed at the bottom of the steamer tray (3), wherein the pulleys (19) are engaged with the limiting slide groove (6) and are rollingly connected.

5. A steamer capable of monitoring temperature according to claim 1, characterized in that: An engaging groove (8) is provided on the surface edge of the steamer cavity (5), a sealing ring (18) is installed on the back of the mounting plate (9), and the sealing ring (18) is engaged and sealed with the engaging groove (8).

6. A steamer capable of monitoring temperature according to claim 1, characterized in that: The specific working steps of the temperature control algorithm module are as follows: Step 1: The temperature sensor (13) in the steamer cavity (5) detects the actual temperature in real time and feeds the information back to the controller (12). The controller (12) compares the set temperature with the actual temperature to obtain the temperature difference; Step 2, proportional control directly adjusts the control amount according to the size of the error. When the actual temperature is lower than the set temperature, the error is positive, and the controller increases the opening of the flow valve (15) according to the proportional relationship to allow more steam to enter the steamer cavity (5) to increase the temperature. If the actual temperature is higher than the set temperature, the error is negative, and the controller decreases the opening of the flow valve (15) to reduce the steam flow and reduce the temperature. Step 3: If the actual temperature is always slightly lower than the set temperature, the proportional control can only make the temperature approach but not reach the set value. As time goes by, the integral control will continue to accumulate the influence of this error and gradually increase the opening of the flow valve (15) until the temperature finally reaches the set value. Step 4: According to the speed of temperature rise, the differential control reduces the flow valve opening in advance to suppress the rapid rise of temperature and make the temperature reach the set value more steadily; Step 5, the controller (12) comprehensively considers the results of the three control modes of proportion, integration and differentiation to determine the final control amount for adjusting the opening of the flow valve (15). By continuously repeating the above process, the temperature in the steamer cavity (5) can quickly and stably reach the set value and remain within the allowable error range.

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