Clean-burning, clean-gassing range

Abstract

The present application relates to the field of food cooking technology, especially to a clean smoke and clean steam rapid cooking oven, which is provided with a clean water bin and a filtered water bin, the clean water bin is connected to a steam supplement device to supplement steam for the inner container to meet the needs of steaming and barbecue, the filtered water bin is connected to a fan to filter the airflow delivered by the circulating fan through the filtered water bin, thereby ensuring the cleanliness of the inner container and meeting the use needs of the clean smoke and clean steam rapid cooking oven, and a filtering device is arranged between the clean water bin and the filtered water bin to connect the clean water bin and the filtered water bin, thereby reducing the water loss and prolonging the water supplement period to meet the use needs.

Description

Technical Field

[0001] This invention relates to the field of food cooking technology, and in particular to a smoke- and steam-free high-speed cooking oven. Background Technology

[0002] A microwave-steam-bake oven, also known as a microwave-steam-bake combo oven, is a food processing device that combines microwave, steam, and bake functions. It can be used in various settings such as factories, supermarkets, and homes. Choose the appropriate model according to your needs to make life more convenient.

[0003] During the cooking process in a high-speed cooking oven, fumes are generated and need to be treated to achieve a clean-smoke, clean-steam high-speed cooking oven. The fumes are mainly of two types: one is generated during steaming, primarily consisting of steam, and the other is generated during baking, containing particles and oil. In existing technology, the steam generator is stopped 5-8 seconds before the oven door is opened, automatically reducing the steam level, and then the door is opened to prevent steam escape. For the fumes containing particles and oil, a filtration device is used. Highly integrated filtration devices such as activated carbon filters and three-way catalytic filters can be selected to absorb particles and oil. However, using highly integrated filtration devices like activated carbon filters and three-way catalytic filters is cumbersome due to the inconvenience of replacing the filter media and requires regular maintenance. Those skilled in the art have also considered using water or other fluid filter media to filter the fumes. However, due to space limitations, this method is used in larger food processing equipment, such as fryers and grills. For smaller clean-smoke, clean-steam high-speed cooking ovens, filtering fumes with water is difficult to implement and, after testing, does not meet the requirements.

[0004] In particular, in the three major catering scenarios of home open kitchens, convenience stores and shopping malls, the high cleanliness requirements of these venues mean that existing mainstream smoke and steam purification ovens cannot meet the requirements of customers in these scenarios. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a smoke-cleaning and steam-cleaning cooking oven that can use water to filter flue gas.

[0006] This invention is achieved through the following technical solution: a smoke and steam purification cooking oven, comprising a cooking oven body, wherein the cooking oven body is equipped with a smoke and steam purification system, the smoke and steam purification system comprising a flue gas collection device and a flue gas purification device, the flue gas collection device comprising a fan connected to the inner liner, the fan conveying the flue gas to the flue gas purification device, the flue gas purification device comprising a purified water tank, the purified water tank being connected to a water supply pipe, a drain pipe, and a water level monitoring device, the purified water tank being provided with a purified water chamber and a filtered water chamber, a filtration device being provided between the purified water chamber and the filtered water chamber, the purified water chamber being connected to a steam supply device and a water supply pipe, the filtered water chamber being connected to a drain pipe, a fan, and a circulation pipe, the fan's outlet pipe extending into the filtered water chamber, and the circulation pipe connecting to the upper end of the purified water tank.

[0007] Furthermore, the purified water tank is equipped with an isolation cover, which separates the purified water tank into a purified water chamber and a filtered water chamber. The isolation cover includes a downward-sloping top plate, and a downward-sloping support plate is connected to the end of the top plate. The filtration device is installed on the top plate or the support plate, and the filtration device includes a perforated plate installed on the top plate or the support plate. A filter layer is installed on the outside of the perforated plate, which is configured to allow backwashing of the perforated plate and the filter layer during water replenishment and drainage.

[0008] Furthermore, the filter layer is an elastic filter layer, and the elastic filter layer is connected to a density control device. The density control device includes a pressure plate that cooperates with the elastic filter layer. The pressure plate is provided with liquid passage holes. Under normal conditions, the pressure plate squeezes the elastic filter layer, and during the process of water replenishment and drainage, the pressure plate detaches from the elastic filter layer.

[0009] Furthermore, the perforated plate is disposed on the support plate, the pressure plate is hinged to the lower end of the support plate, and a float ball is disposed on the outer side of the pressure plate.

[0010] Furthermore, the purified water tank is connected to a temperature control device, which includes a support frame installed inside the purified water tank. A heat conductor is installed on the support frame, which can transfer the temperature of the upper layer of the liquid to the lower layer. There are multiple heat conductors. The heat conductor located at the purified water tank is inserted downward into the purified water tank and connected to a heat storage body. A guide sleeve that cooperates with the heat storage body is provided on the top plate. A first folding plate that cooperates with the side wall of the purified water tank is provided at the upper end of the top plate. The end of the support frame away from the purified water tank is suspended and cooperates with the inner wall of the purified water tank. A second folding plate that cooperates with the bottom of the purified water tank is provided at the lower end of the support plate. The support frame and the heat conductor are configured to press and position the isolation cover, and the isolation cover supports and positions the support frame and the heat conductor.

[0011] Furthermore, the heat conductor is provided with an airflow dispersion device, which includes a support ring fitted on the heat conductor and a baffle rod provided on the support ring.

[0012] Furthermore, an air distribution pipe is connected to the end of the air outlet pipe of the fan.

[0013] Furthermore, the water supply pipe is connected to the water supply tank, and the drain pipe is connected to the sewage tank.

[0014] Furthermore, the steam replenishment device includes a humidification pipe and a steam generator.

[0015] Furthermore, the water level monitoring device includes a water level sensor or a level gauge.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. By setting up a clean water tank and a filter water tank, the clean water tank is connected to the steam replenishment device to replenish steam to the inner tank to meet the needs of steaming and grilling. The filter water tank is connected to the fan and filters the airflow delivered by the circulating fan through the filter water tank, thereby ensuring the cleanliness of the inner tank and meeting the usage requirements of the smoke-free and steam-free fast cooking oven. A filter device is installed between the clean water tank and the filter water tank to connect the clean water tank and the filter water tank, which can reduce water loss and improve the water replenishment cycle to meet the usage requirements.

[0018] 2. The clean water chamber and the filter water chamber are set in the same purified water tank. During the process of filtering flue gas, the clean water chamber can also be heated to improve the efficiency of steam generation, and the temperature inside the filter water chamber can be reduced to ensure the flue gas filtration effect.

[0019] 3. The system provides a clean water tank and a filtered water tank through an isolation cover. The clean water tank is connected to a water supply pipe, and the filtered water tank is connected to a drain pipe. During the water supply and drainage process, the perforated plate and filter layer can be backwashed, thereby ensuring the filtration effect of the filtration device.

[0020] 4. Since water is a poor conductor of heat, the temperature control device transfers the temperature from the upper layer to the lower layer, weakening the temperature stratification effect and thus improving the overall filtration effect of the flue gas. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of the smoke- and steam-purifying rapid cooking furnace after removing the outer shell;

[0022] Figure 2 This is a schematic diagram of the control principle of Example 1;

[0023] Figure 3 This is a schematic diagram showing the connection relationships between the components;

[0024] Figure 4 This is a schematic diagram of the cross-section of the purified water tank;

[0025] Figure 5 This is a schematic diagram of the isolation enclosure structure;

[0026] Figure 6 This is a schematic diagram of the cross-section of the heat conductor;

[0027] Figure 7 This is a schematic diagram of the air distribution pipe structure;

[0028] Figure 8 This is a schematic diagram of the airflow dispersion device.

[0029] The components include: 1. Purified water tank; 2. Fan; 3. Steam generator; 4. Fan outlet duct; 5. Circulation pipe; 6. Water level monitoring pipe; 7. Water replenishment tank; 8. Sewage tank; 9. Sealing cover; 10. Water replenishment pipe; 11. Connecting pipe one; 12. Connecting pipe two; 13. Drainage pipe; 14. Top plate; 15. Support frame; 16. Heat conductor; 17. Folding plate one; 18. Support plate; 19. Guide sleeve; 20. Sealing gasket; 21. Pressure plate; 22. Filter layer; 23. Float ball; 24. Folding plate two; 25. Joint; 26. Air distribution pipe; 27. Metal pipe; 28. Heat storage body; 29. ​​Support ring; 30. Baffle rod. Detailed Implementation

[0030] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1

[0033] like Figure 1-8As shown, a smoke- and steam-purifying fast cooking oven includes a cooking oven body. The cooking oven body is equipped with a smoke- and steam-purifying system, including a flue gas collection device and a flue gas purification device. The flue gas collection device includes a fan 2 connected to the inner liner. The fan 2 transports the flue gas to the flue gas purification device. The flue gas purification device includes a purified water tank 1, which is made of stainless steel and installed inside the rear shell of the smoke- and steam-purifying fast cooking oven. It has a large installation space and can dissipate heat well to prevent the water temperature in the purified water tank 1 from becoming too high. A sealing cover 9 is installed on the upper end of the purified water tank 1. The air outlet pipe 4 of the fan, a circulation pipe 5, and a water level monitoring pipe 6 are connected through the sealing cover 9. The circulation pipe 5 is connected to the inner liner, specifically to the upper end of the inner liner, thereby transporting the purified airflow into the inner liner to realize the airflow circulation of the smoke- and steam-purifying fast cooking oven. The circulation pipe 5 transports the humid airflow to the inner liner, which can play a certain role in replenishing the water in the inner liner.

[0034] The purified water tank 1 is connected to a water supply pipe 10, a drain pipe 13, and a water level monitoring device. In this embodiment, the purified water tank 1 is divided into a clean water chamber and a filtered water chamber. Specifically, the purified water tank 1 is rectangular in shape, and an isolation cover is installed inside the purified water tank 1. The isolation cover is formed by bending a stainless steel plate. The isolation cover separates the purified water tank 1 into a clean water chamber and a filtered water chamber. The isolation cover includes a downward-sloping top plate 14. The top plate 14 is inclined to prevent sediment accumulation. The inclination angle is 15-20°. A downward-sloping support plate 18 is connected to the end of the top plate 14. The support plate 18 forms an angle of 85°-90° with the bottom surface of the purified water chamber. The included angle ensures the support effect on the top plate 14. The volume ratio of the clean water tank to the filtered water tank is 1:2. A filtration device is located between the clean water tank and the filtered water tank. Specifically, the filtration device includes a perforated plate processed on the support plate 18, which is formed by punching rows and columns of holes. The area of ​​the perforated plate can be set as needed, and can be part of the support plate 18 or the entire support plate 18. A filter layer 22 is attached to the outer side of the perforated plate. The filter layer 22 is an elastic filter layer, specifically polyethylene foam sponge, which can filter particles and also has oleophobic properties. During water replenishment and drainage, it can filter the perforated plate. The filter plate and filter layer 22 are backwashed. Specifically, the clean water tank is connected to the water supply pipe 10, and the filtered water tank is connected to the drain pipe 13. During the water supply process, the water pressure in the clean water tank rises first, and then enters the filtered water tank through the filter layer 22 to achieve backwashing. During the drainage process, the water pressure in the filtered water tank drops first, and the clean water in the clean water tank enters the filtered water tank through the filter layer 22 to achieve backwashing. To improve the filtration effect and backwashing effect of the filter layer 22, the elastic filter layer is connected to a density control device. The density control device includes a pressure plate 21 that cooperates with the elastic filter layer. The upper part is machined with liquid holes. Under normal conditions, the pressure plate 21 squeezes the elastic filter layer. During water replenishment and drainage, the pressure plate 21 detaches from the elastic filter layer. Specifically, the pressure plate 21 is hinged to the lower end of the support plate 18. A float ball 23 is installed on the outside of the pressure plate 21. Under normal conditions, the buoyancy of the float ball 23 pushes the pressure plate 21 to flip upward and squeeze the filter layer 22, thereby increasing the density of the filter layer 22 and improving the filtration effect. When water is replenished and drained, the liquid level in the purified water tank is at a low value. The pressure plate 21 flips downward and detaches from the filter layer 22, reducing the density of the filter layer 22 and improving the backwashing effect.

[0035] It is worth noting that the filter can also be installed on the top plate 14, which can obtain a larger flow area. The disadvantage is that the backwashing effect is poor and regular maintenance and replacement of the filter layer 22 are required.

[0036] To ensure the effectiveness of the purified water tank 1, the testing process mainly focused on three aspects:

[0037] 1. The design of the smoke and steam purification quick cooking furnace provides sufficient space for the installation of the purified water tank 1, thereby improving the filtration effect. However, the test found that it would increase the overall volume of the smoke and steam purification quick cooking furnace and limit its application.

[0038] 2. External water supply tank and wastewater tank are connected, which can replenish more clean water and discharge more wastewater. However, during testing, it was found that this affected the overall appearance and limited the application scenarios.

[0039] 3. By changing the way it is used, the following improvements are achieved in this direction:

[0040] The air outlet pipe of the blower 2 extends 20-30mm below the liquid surface to ensure that the air pressure of the blower 2 can push the liquid surface, thereby allowing the airflow to enter the filter water tank. A water level monitoring device is installed to detect the water level. The water level monitoring device can be a water level sensor or a liquid level gauge. In this embodiment, a liquid level gauge is selected and connected through the water level monitoring pipe 6.

[0041] To control the airflow pattern, a distribution pipe 26 is installed at the end of the fan's outlet pipe via a connector 25. This initially disperses the airflow. The distribution pipe 26 is a flexible hose that can change shape to avoid interference with other components. A flow-dispersing device is also installed, which includes a support ring 29 and a flow-dispersing rod 30. The flow-dispersing rod 30 is made of steel wire with an outer diameter of 1 mm, which has good corrosion resistance and can swing to disperse the airflow.

[0042] The water temperature is controlled by introducing a temperature control device, which includes a support frame 15 installed inside the purified water tank 1. Multiple heat conductors 16 are fixed on the support frame 15. The heat conductors 16 transfer the temperature from the upper layer of the liquid surface to the lower layer. The heat conductors 16 located in the purified water tank are inserted downwards into the tank and connected to a heat storage body 28. The upper end of the heat conductor 16 is a metal tube 27 made of aluminum alloy. The heat storage body 28 is made of stainless steel. By transferring the temperature from the upper layer to the lower layer through the temperature control device, the temperature stratification effect is weakened, thereby improving the overall temperature control of the flue gas. To improve filtration efficiency, a heat storage body 28 is installed inside the purified water chamber to heat the chamber, increasing steam generation efficiency and reducing the temperature inside the chamber, thus ensuring effective flue gas filtration. A guide sleeve 19, which mates with the heat storage body 28, is machined on the top plate 14. This guide sleeve is automatically formed during the punching process to create a through hole that mates with the heat conductor 16; it only requires polishing. A folded plate 17, which mates with the side wall of the purified water tank 1, is integrally formed at the upper end of the top plate 14. The end of the support frame 15 furthest from the purified water tank is suspended and mates with the inner wall of the purified water tank 1. The lower end of the support plate 18 is integrally formed with a section that mates with the bottom of the purified water tank 1. The combined folding plate 24, with the support frame 15 suspended at the end away from the purified water tank and in contact with the inner wall of the purified water tank 1, pushes the isolation cover to press against the purified water tank 1. Because the heat conductor 16 cooperates with the top plate 14, it further presses the isolation cover downwards, achieving the pressing and positioning of the isolation cover by the support frame 15 and the heat conductor 16. The isolation cover supports and positions the support frame 15 and the heat conductor 16. By controlling the number and weight of the heat conductor 16, excessive force on the top plate 14 is avoided. The guide sleeve 19 prevents stress concentration between the heat conductor 16 and the top plate 14, thus preventing damage to the top plate 14. Both the first folding plate 17 and the second folding plate 24 are fitted with the purified water tank 1 through the sealing gasket 20 to avoid rigid contact and to achieve an anti-slip positioning effect. The sealing gasket 20 is made of latex. The isolation cover, support frame 15, and heat conductor 16 are pre-assembled and placed directly at the bottom of the purified water tank 1 for easy installation and maintenance. To further control the temperature, a heat exchanger is also installed on the air outlet pipe of the fan 2 to reduce the temperature of the airflow into the purified water tank and control the temperature inside the purified water tank 1 to 40-50℃. At this temperature, the grease can be condensed and the dissolution effect of the grease can be improved.

[0043] The water supply pipe 10 is connected to the water supply tank 7 via pump one. The water supply tank 7 can be installed inside the shell of the clean smoke and steam quick-cooking oven, thus facilitating the replenishment of clean water. In this embodiment, since the purified water tank 1 includes a clean water chamber and a filtered water chamber, it can effectively reduce water loss and extend the water replenishment cycle. The drain pipe 13 is connected to the sewage tank 8 to collect the discharged sewage and discharge it centrally. In some usage scenarios, the clean water in the water supply tank 7 can be directly connected to the steam replenishment device. The purified water tank 1 only performs filtration, and the water supply tank 7 replenishes the purified water tank 1. After testing, it has a good usage effect, but the water supply tank 7 needs to be replenished regularly, and the maintenance cycle is short. The steam replenishment device includes a humidifying pipe and a steam generator 3. The humidifying pipe is connected to the clean water chamber via pump two and connecting pipe one 11. The steam generator 3 is connected to the clean water chamber via pump three and connecting pipe two 12. The humidifying pipe is a pipeline that works in conjunction with baking. Water vapor is obtained by dripping water evaporation, and water is replenished during the baking process. The steam generator 3 is a component that generates steam during the steaming process.

[0044] In the smoke-free and steam-free fast cooking oven provided in this embodiment, during the baking process, the fan 2 transports the gas containing particles and oil from the inner liner to the filter water chamber. After purification, the gas returns to the inner liner through the circulation pipe 5, thus forming a gas flow circulation. After steaming, the fan 2 transports the steam gas from the inner liner to the filter water chamber within 2 seconds. After purification, the steam returns to the inner liner through the circulation pipe 5, thus preventing steam from escaping when the door is opened.

[0045] It is worth noting that, where the volume allows, the purified water tank 1 provided in this embodiment can also coexist with existing smoke and gas purification systems, and can be connected in parallel and selected for use as needed.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A smoke- and steam-purifying rapid cooking oven, comprising an oven body, wherein the oven body is equipped with a smoke- and steam-purifying system, the smoke- and steam-purifying system comprising a flue gas collection device and a flue gas purification device, the flue gas collection device comprising a fan connected to an inner liner, the fan conveying flue gas to the flue gas purification device, characterized in that, The flue gas purification device includes a purified water tank, which is connected to a water supply pipe, a drain pipe, and a water level monitoring device. The purified water tank is equipped with a clean water chamber and a filtered water chamber, with a filtration device installed between the clean water chamber and the filtered water chamber. The clean water chamber is connected to a steam supply device and a water supply pipe. The filtered water chamber is connected to a drain pipe, a fan, and a circulation pipe. The fan's outlet pipe extends into the filtered water chamber, and the circulation pipe connects to the upper end of the purified water tank. The purified water tank is connected to a temperature control device, which includes a support frame installed inside the purified water tank. A heat conductor is mounted on the support frame, transferring temperature from the upper layer of the liquid surface to the lower layer. Multiple heat conductors are present; the heat conductor located in the purified water chamber is inserted downwards into the chamber and connected to a heat storage element. An isolation cover is installed inside the purified water tank, separating it into a purified water chamber and a filtered water chamber. The isolation cover includes a downward-sloping top plate, with a downward-sloping support plate connected to its end. A guide sleeve that cooperates with the heat storage element is mounted on the top plate. A first folding plate that cooperates with the side wall of the purified water tank is mounted on the upper part of the top plate. The end of the support frame away from the purified water chamber is suspended and cooperates with the inner wall of the purified water tank. A second folding plate that cooperates with the bottom of the purified water tank is mounted on the lower end of the support plate. The support frame and heat conductors are configured to press and position the isolation cover, and the isolation cover supports and positions the support frame and heat conductors. The heat conductor is provided with an airflow dispersion device, which includes a support ring fitted on the heat conductor and a baffle rod provided on the support ring.

2. The smoke-free and steam-free rapid cooking furnace according to claim 1, characterized in that, The filter device is installed on the top plate or the support plate. The filter device includes a perforated plate installed on the top plate or the support plate. A filter layer is provided on the outside of the perforated plate. The filter device is configured to be able to backwash the perforated plate and the filter layer during water replenishment and drainage.

3. The smoke-free and steam-free rapid cooking furnace according to claim 2, characterized in that, The filter layer is an elastic filter layer, and the elastic filter layer is connected to a density control device. The density control device includes a pressure plate that cooperates with the elastic filter layer. The pressure plate is provided with liquid passage holes. Under normal conditions, the pressure plate squeezes the elastic filter layer, and during the process of water replenishment and drainage, the pressure plate detaches from the elastic filter layer.

4. The smoke-free and steam-free rapid cooking furnace according to claim 3, characterized in that, The perforated plate is mounted on the support plate, and the pressure plate is hinged to the lower end of the support plate. A float ball is provided on the outer side of the pressure plate.

5. The smoke-free and steam-free rapid cooking furnace according to claim 1, characterized in that, The air outlet pipe of the fan is connected to an air distribution pipe.

6. The smoke-free and steam-free rapid cooking furnace according to claim 1, characterized in that, The water supply pipe is connected to the water supply tank, and the drain pipe is connected to the sewage tank.

7. The smoke-free and steam-free rapid cooking furnace according to claim 1, characterized in that, The steam replenishment device includes a humidification pipe and a steam generator.

8. The smoke-free and steam-free rapid cooking furnace according to claim 1, characterized in that, The water level monitoring device includes a water level sensor.

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