High-pressure low-temperature steam cooker

Abstract

The invention discloses a high-pressure low-temperature steam cooker, which relates to the field of pressure vessels, and comprises a cooker body and a cover body above the cooker body, and a pressure safety system is arranged above the cover body; the upper outer wall of the pot body is connected with a pressurizing system; a heating system is arranged at the bottom of the side surface of the pot body; and a perforated inner container is placed in the pot body. The outer diameter of the pot body is matched with the outer diameter of the bottom end of the cover body, and a closed space is formed in the pot body through the sealing piece and the fixing device. Compared with high-temperature quick cooking in a pressure cooker and low-temperature slow cooking in a negative-pressure pot, the method has the characteristics of high-pressure and low-temperature quick cooking, fresh and tender flavor, cost saving and the like. The pressurizing system and the heating system both use the same steam of an external steam generator, and the device is simple in structure, safe and easy to operate.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pressure vessels. BACKGROUND

[0002] The high-pressure pot is also called pressure cooker or pressure pot, which is a sealed pot with high temperature and high pressure. The high-pressure pot is to create a high-pressure environment (usually higher than standard atmospheric pressure) in a sealed container to improve the boiling point of water, so that the food is quickly cooked under high temperature (112-120 degrees). Its advantages are that it can quickly cook food, and the equipment structure is simple and easy to operate; the disadvantages are that it can only cook food at high temperature, which is not conducive to the steaming and processing of fresh food such as sea cucumber and preserved fruit.

[0003] The negative pressure pot is also called vacuum negative pressure pot, which is a sealed pot with low temperature and negative pressure. The negative pressure pot is a food processing equipment that combines vacuum technology and steaming process, which is to create a negative pressure environment (usually lower than standard atmospheric pressure) in a sealed container to reduce the boiling point of water, so that the food is safely cooked at low water temperature (60-90℃). Its advantages are that it can cook food at low temperature to avoid overcooking due to high temperature; the disadvantages are that the equipment can only rely on vacuum pumps and other equipment for operation, the structure is relatively complex, the steaming time is long, the steaming efficiency is low, and the maintenance cost is high.

[0004] In the prior art, the patent with publication number CN 219556929 U discloses a micro-pressure electric steamer, which includes a base assembly and a steamer basket detachably arranged on the base assembly. The base assembly is provided with a steam generating cavity for generating steam. The steam generating cavity is communicated with the inner cavity of the steamer basket through a steam channel. The base assembly is provided with a steam pressure relief valve that can conduct or cut off the steam channel. When the steam pressure in the steam generating cavity is greater than the preset pressure threshold of the steam pressure relief valve, the steam pressure relief valve is automatically opened and the steam is released into the inner cavity of the steamer. This electric steamer effectively adjusts the steam pressure and steam temperature in the steam generating cavity, so that the low-temperature and low-pressure steam generated in the steam generating cavity at the initial heating stage is not immediately discharged into the inner cavity of the steamer for inefficient heating of the food, thereby improving the steaming efficiency. However, this electric steamer is not suitable for low-temperature cooking, such as steaming of fresh products such as sea cucumber and preserved fruit. SUMMARY

[0005] In order to overcome the problems of traditional pressure cookers that are not conducive to low-temperature steaming and processing, the present application provides a high-pressure and low-temperature steam pot.

[0006] The technical scheme adopted by the present application to achieve the above-mentioned purpose is: a high-pressure and low-temperature steam pot, a pressure safety system is arranged above a cover body, a pot body is connected below the cover body, a pressurizing system is connected to the upper part of the outer wall of the pot body, and a perforated inner container is placed in the pot body; a heating system is arranged at the bottom of the side surface of the pot body.

[0007] Specifically, the outer diameter of the pot body and the bottom outer diameter of the lid body are matched, and the two form a sealed space through a sealing element and a lid body fixing device.

[0008] Specifically, the pressure safety system includes a pressure gauge located in the middle of the upper surface of the cover, a pair of safety valves on both sides of the pressure gauge, and an emergency pressure relief valve between the pressure safety valves and the pressure gauge.

[0009] Specifically, the pressurization system includes a pipe connected to a steam generator on the top of the outer side of the pot body, and a pressurization valve is provided above the pipe.

[0010] Specifically, the heating system has a multi-row steam pipe at the bottom of the pot body, a pipe connected to the steam generator at the bottom of the outer side of the pot body, a heating control valve below the pipe, a thermometer installed on the side wall of the pot body, and a water level overflow drain outlet on the side wall of the pot body.

[0011] Specifically, the perforated inner liner is divided into an upper perforated inner liner and a lower perforated inner liner, which are fixed to the pot body by hooks.

[0012] The sealing element is a sealing ring, and the fixing device is a hook-type fixing device or a rotary tightening fixing device.

[0013] The inner wall of the perforated liner is provided with an array of circular holes.

[0014] The beneficial effects of this invention are as follows: Compared with the high-temperature rapid cooking of a pressure cooker and the low-temperature slow cooking of a negative pressure cooker, this invention can achieve high-pressure, low-temperature rapid cooking, resulting in tender flavor and cost savings. Especially in the processing of sea cucumbers and dried fruits, it solves the problems of "high-temperature rapid cooking, which easily leads to overcooking and high costs" and "low-temperature slow cooking, which results in low efficiency and nutrient loss." Furthermore, the pressurization system and heating system of this invention both utilize the same steam from an external steam generator, resulting in a simple, safe, and easy-to-operate structure, adaptable to actual cooking needs. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of an embodiment of the present invention.

[0016] Figure 2 This is a structural diagram of the cover body according to an embodiment of the present invention.

[0017] Figure 3 This is a structural diagram of the perforated inner liner according to an embodiment of the present invention.

[0018] Figure 4 This is a structural diagram of the steam pipe of the heating system according to an embodiment of the present invention.

[0019] The diagram shows the following components: 1. Steam generator; 2. Boiler body; 3. Cover; 4. Pressure valve; 5. Thermometer; 6. Upper-opening inner liner; 7. Lower-opening inner liner; 8. Connecting rod; 9-1. First pressure safety valve; 9-2. Second pressure safety valve; 10. Emergency pressure relief valve; 11. Pressure gauge; 12. Water level overflow valve; 13. Drain valve; 14. Multi-channel steam pipe of heating system; 15. Cover fixing device; 16. Steam generator outlet valve; 17. Heating valve; 18. Pressure system; 19. Heating system. Detailed Implementation

[0020] The present invention will be further explained and described below with reference to the accompanying drawings and embodiments.

[0021] like Figures 1-3 As shown, the high-pressure low-temperature steam cooker of the present invention has a pressure safety system installed above the lid 3; the lid 3 is connected to the pot body 2 below, the upper part of the outer wall of the pot body 2 is connected to the pressurization system 18, and the pot body 2 has perforated inner liner 6 and 7 inside; the bottom side of the pot body 2 is provided with a heating system 19.

[0022] The outer diameter of the pot body 2 and the bottom outer diameter of the lid 3 are matched, and the two form a sealed space through the sealing element and the lid fixing device 15.

[0023] The pressure safety system includes a pressure gauge 11 located in the middle of the upper surface of the cover 3, a pair of pressure safety valves 9-1 and 9-2 on both sides of the pressure gauge 11, and an emergency pressure relief valve 10 between the pressure safety valves 9-1 and 9-2 and the pressure gauge 11.

[0024] The pressurization system 5 includes a pipe connected to the top of the outer side of the pot body 2 and the steam generator 1, with a pressurization valve 4 installed above the pipe.

[0025] like Figure 4 As shown, the heating system 19 has a multi-channel steam pipe 14 at the bottom of the inner pot body 2. The bottom outer side of the pot body 2 has a pipe connected to the steam generator 1, and a heating valve 17 is installed on the pipe. A thermometer 5 is installed on the side wall of the pot body 2, and a water level overflow drain is also provided on the side wall of the pot body 2.

[0026] The perforated inner liner is divided into an upper perforated inner liner 6 and a lower perforated inner liner 7, which are fixed inside the pot body 2 by hooks.

[0027] The sealing element is a sealing ring, and the cover fixing device 15 is a hook-type fixing device or a rotary tightening fixing device.

[0028] The inner liner 6 and 7 have an array of circular holes on their side walls.

[0029] The capacity and output of this steam boiler can be selected according to the production scale. The common specifications are 120 liters to 480 liters, and the output ranges from 50 kg / batch to 200 kg / batch.

[0030] The pressure range inside the pot is usually between 80 kPa and 220 kPa. The higher the pressure control precision, the more stable the processing effect.

[0031] The main body and inner pot of the steam pot are made of 304 stainless steel with a thickness of ≥3.5mm. The welded joints must be polished to prevent dirt and grime from accumulating.

[0032] Working process: Before processing food, open the lid 3 and add water to the pot 2, ensuring the water level is 5 cm below the water level line. Secure the lid 3 with the lid fixing device 15. Then, open the heating valve 17 on the lower side of the pot to heat the water to the desired temperature (if the water level is higher than the water level line after heating, drain the excess water). Place the food to be steamed into the separate perforated inner pot, then place the inner pot and food together into the pot 2 and close the lid. Next, open the pressure valve 4 on the upper side of the pot and simultaneously open the emergency pressure relief valve 10 to release air from the pot (close the valve after releasing air), increasing the steam pressure inside the pot 2. Then, by operating the heating valve 17 and the pressure valve 4, reach the desired water temperature (recommended 65-85℃) and pressure (recommended 80-220 kPa) to complete the steaming process. After processing, first close the pressure valve 4 and the heating valve 17, and then slowly release the pressure after the temperature drops below 55℃ to prevent the material from deforming due to sudden pressure changes.

[0033] After each use, the pot body and the perforated inner liner must be thoroughly cleaned to prevent residue from corroding the metal. Regularly check the pressure safety valve, pressure gauge, thermometer, and seals for wear and replace aging parts in a timely manner.

[0034] This invention has been described through embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of this invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, this invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this invention.

Claims

1. A high-pressure, low-temperature steam boiler, characterized in that: A pressure safety system is provided above the lid (3), the pot body (2) is connected below the lid (3), a pressurization system (18) is connected to the upper part of the outer wall of the pot body (2), an open inner liner (6, 7) is placed inside the pot body (2), and a heating system (19) is provided at the bottom of the side of the pot body (2).

2. The high-pressure low-temperature steam boiler according to claim 1, characterized in that: The outer diameter of the pot body (2) and the bottom outer diameter of the lid (3) are matched, and the two form a sealed space through the sealing element and the lid fixing device (15).

3. The high-pressure low-temperature steam boiler according to claim 1, characterized in that: The pressure safety system includes a pressure gauge (11) located in the middle of the upper surface of the cover (3), a pair of pressure safety valves (9-1, 9-2) on both sides of the pressure gauge (11), and an emergency pressure relief valve (10) between the pressure safety valves (9-1, 9-2) and the pressure gauge (11).

4. The high-pressure low-temperature steam boiler according to claim 1, characterized in that: The pressurization system (5) includes a pipe connected to the top of the outer side of the pot body (2) and the steam generator (1), and a pressurization valve (4) is provided above the pipe.

5. The high-pressure low-temperature steam boiler according to claim 1, characterized in that: The heating system (19) has a multi-row steam pipe (14) at the bottom of the inner pot body (2), and a pipe connected to the steam generator (1) at the bottom of the outer side of the pot body (2). A heating valve (17) is installed on the pipe, a thermometer (5) is installed on the side wall of the pot body (2), and a water level overflow drain is also provided on the side wall of the pot body (2).

6. The high-pressure low-temperature steam boiler according to claim 1, characterized in that: The perforated inner liner (6, 7) is divided into an upper perforated inner liner (6) and a lower perforated inner liner (7), which are fixed inside the pot body (2) by hooks.

7. The high-pressure low-temperature steam boiler according to claim 1, characterized in that: The sealing element is a sealing ring, and the cover fixing device (15) is a hook-type fixing device or a rotary tightening fixing device.

8. The high-pressure low-temperature steam boiler according to claim 1, characterized in that: The perforated inner liner (6, 7) has an array of round holes on its side wall.

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