High-pressure steam equipment

The high-pressure steam equipment addresses complex detection structures and low sensitivity by using a cooling tank and liquid detection unit to enhance steam leakage detection, achieving efficient and customizable alerts with reduced energy use.

CN222186896UActive Publication Date: 2024-12-17PANASONIC APPLIANCES (CHINA) CO LTD +1
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Patent Information

Application Number
CN202420063624.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-01-10
Publication Date
2024-12-17
Estimated Expiration
2034-01-10

AI Technical Summary

Technical Problem

Existing high-pressure steam equipment suffers from complex steam leakage detection structures and low detection sensitivity due to issues like steam and water leakage, which are often caused by poor sealing conditions and aging of sealing components.

Method used

A high-pressure steam equipment with a simplified detection structure that uses a cooling tank to condense leaked steam, a liquid detection unit to trigger a processing module via electrodes or a touch sensing element, and a processing module to alert users of steam leakage, enhanced by a soluble electrolyte to increase conductivity and a funnel-shaped cooling tank for efficient liquid collection.

Benefits of technology

The solution provides a more sensitive and reliable steam leakage detection with a simple structure, improving detection efficiency and reducing energy consumption while allowing for customizable responses to different scenarios.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of high-pressure steam equipment, and discloses high-pressure steam equipment which comprises a shell and a steam treatment container arranged in the shell, and leaked gas of the steam treatment container flows into an interlayer between the shell and the steam treatment container. The high-pressure steam equipment further comprises a cooling tank, a liquid detection unit and a processing module, the cooling tank is arranged at the bottom of the interlayer and used for cooling and liquefying leaked gas in the interlayer, and the liquid detection unit is arranged at the bottom of the cooling tank and is configured to be triggered by a liquid medium collected by the cooling tank. And the processing module is electrically connected with the liquid detection unit and is used for carrying out air leakage detection according to a trigger signal of the liquid detection unit. The steam leakage detection structure of the high-pressure steam equipment is relatively simple and more sensitive.
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Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure steam equipment, in particular to a high-pressure steam equipment. Background Art

[0002] In existing high-pressure steam equipment, such as high-pressure steam cookers, high-pressure steam sterilizers and high-pressure steam cleaning machines, steam leakage, water leakage and other undesirable conditions often occur due to poor sealing conditions and aging of sealing components due to long-term use. Therefore, it is generally necessary to detect whether there is a steam leak through steam leakage detection. For example, the prior art CN202222192322.3 discloses a detection component, which includes a fixed rod fixedly connected to the bottom of the water storage tank, a floating block is slidably connected to the fixed rod, and a conductive sheet is fixedly connected to the floating block. The detection component also includes a fixed sheet fixedly connected to the top of the fixed rod, and a first conductive rod is fixedly connected to one side of the fixed sheet. The detection component also includes a second conductive rod fixedly connected to the other side of the fixed sheet, and the detection assembly also includes a sounding component arranged on one side of the detection component. The detection component floats the floating block through the buoyancy of the condensed liquid in the water storage tank, floats the conductive sheet on the floating block, and floats the conductive sheet to the conductive position, thereby electrically connecting the first conductive rod and the first conductive rod to detect steam leakage. However, the structure of the detection component is relatively complex. Not only is the floating block prone to jamming during movement, but the conductive sheet needs to rely on the buoyancy provided by the condensed liquid to overcome the gravity of the floating block and the conductive sheet and the friction between the fixed rod and the floating block in order to float. A large amount of condensed liquid is required to provide sufficient buoyancy, resulting in low detection sensitivity. Utility Model Content

[0003] In order to overcome the shortcomings of relatively complex steam leakage detection structure and low detection sensitivity in existing high-pressure steam equipment, the utility model provides a high-pressure steam equipment with a relatively simple detection structure and higher sensitivity.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-pressure steam device, comprising an outer shell and a steam processing container built into the outer shell, the leakage gas of the steam processing container flows into the interlayer between the outer shell and the steam processing container, the high-pressure steam device also includes a cooling tank, a liquid detection unit and a processing module, the cooling tank is arranged at the bottom of the interlayer for cooling the leakage gas in the liquefied interlayer, the liquid detection unit is arranged at the bottom of the cooling tank, and is configured to be triggered by the liquid medium collected by the cooling tank, the processing module is electrically connected to the liquid detection unit, and performs leakage detection according to the trigger signal of the liquid detection unit.

[0005] In the above technical solution, when steam leaks, the steam condenses in the cooling tank and drips into the bottom of the cooling tank. The liquid detection unit arranged at the bottom of the cooling tank is triggered by the condensed liquid, and the processing module reminds the user of the steam leakage according to the trigger signal of the liquid detection unit. Among them, the interlayer can control the direction of the leakage steam, and the steam can be concentrated to the cooling tank through the interlayer, which can improve the steam collection efficiency and is beneficial to the sensitivity of steam leakage detection. In the above technical solution, the steam leakage is directly detected by the liquid detection unit, and the structure is relatively simple and more sensitive. Among them, the condensed liquid is collected by the cooling tank, and the condensed liquid is automatically concentrated to the bottom of the cooling tank under the action of gravity. The liquid detection unit is fixed at the bottom of the cooling tank, which can be more easily triggered, which is beneficial to improve the sensitivity of steam leakage detection.

[0006] The utility model is further configured as follows: the liquid detection unit comprises two electrodes arranged at intervals, and the two electrodes are both fixed at the bottom of the cooling tank.

[0007] In the above technical solution, both electrodes are fixed at the bottom of the cooling tank. When there is no steam leakage, there is no condensed liquid at the bottom of the cooling tank, and the insulation between the two spaced electrodes will not form an electrical conductivity path. When condensed liquid accumulates at the bottom of the cooling tank, the condensed liquid will cause an electrical conductivity path to form between the two electrodes, allowing current to flow between the two electrodes, thereby triggering the processing module to remind the user that there is a steam leak.

[0008] The utility model is further configured as follows: the processing module is an alarm function unit, the high-pressure steam equipment also includes a power supply unit, the liquid detection unit, the processing module and the power supply unit are sequentially connected in series to form a detection circuit, and the detection circuit is disconnected at the position of the liquid detection unit.

[0009] In the above technical solution, the liquid detection unit and the processing module are powered by the power supply unit, the steam leakage is detected by the liquid detection unit, and the steam leakage is reported by the alarm function unit. After the liquid detection unit detects the condensed liquid, the corresponding alarm is triggered by the alarm function unit, and the power supply unit provides continuous power. The liquid detection unit, the alarm function unit, and the power supply unit are connected in series in sequence. When there is no steam leakage, the two electrodes are not conductive, and the liquid detection unit and the processing module are not powered, which is more energy-saving and can increase the power supply time of the power supply unit.

[0010] The utility model is further configured as follows: a soluble electrolyte body for enhancing the conductivity of the liquid medium is attached to the surface of the cooling tank.

[0011] In the above technical solution, when the condensed liquid drips into the cooling tank, the soluble electrolyte dissolves in the condensed liquid, increasing the conductivity of the condensed liquid, thereby making it easier to form an electrical conductivity path, making it easier for the liquid detection unit to detect the steam leakage signal, which is beneficial to improving the sensitivity of steam leakage detection.

[0012] The utility model is further configured as follows: the liquid detection unit is a touch sensing element.

[0013] In the above technical solution, when condensed liquid drips onto the touch sensing element, the touch sensing element will send out a signal when detecting the condensed liquid, and the processing module performs air leakage detection according to the trigger signal of the liquid detection unit.

[0014] The utility model is further configured as follows: a lower opening is provided at the bottom of the cooling groove, and the touch sensing element is arranged directly below the lower opening, so that water vapor dripping from the lower opening can drip onto the touch sensing element.

[0015] In the above technical solution, when the condensed liquid in the cooling tank drips, the water vapor will fall freely through the lower opening and directly contact the touch sensing element arranged below, thereby completing the steam leakage detection. It should be noted that the cooling tank shell extends and fixes the touch sensing element to the bottom of the cooling tank.

[0016] The utility model is further configured as follows: the processing module is a control unit, the high-pressure steam equipment also includes a power supply unit and a heating unit for heating the steam processing container, and the heating unit, the liquid detection unit, and the power supply unit are electrically connected to the processing module respectively.

[0017] In the above technical solution, the liquid detection unit and the processing module are powered by the power supply unit, the steam leakage is detected by the liquid detection unit, and the control unit is used for control. The liquid detection unit, the power supply unit, and the heating unit are electrically connected to the processing module respectively, and each component can communicate directly with the processing module. After the liquid detection unit detects the steam leakage, the control unit can control the heating unit to stop heating. At the same time, the processing module can collect and analyze information from each component, including recording the time and duration of the event, and taking specific response measures as needed. In addition, the processing module also improves the customizability of steam leakage detection, which can meet the steam leakage detection and alarm requirements in different scenarios, and can improve the reliability and stability of steam leakage detection.

[0018] The utility model is further configured as follows: the cooling groove is a funnel-shaped structure that is larger at the top and smaller at the bottom, and the upper end of the cooling groove is opened.

[0019] In the above technical solution, the upper end of the cooling tank is opened, and due to the effect of gravity, steam or condensed liquid can more easily enter the cooling tank. At the same time, the cooling tank is a funnel-shaped structure that is larger at the top and smaller at the bottom. The upper part is large and has a large area, which increases the collection area, is conducive to collecting condensed liquid, and can improve the sensitivity of steam leakage detection; the lower part is small, which can avoid the diffusion of condensed liquid, and can make the condensed liquid concentrate at the bottom of the cooling tank, which is easier to trigger the liquid detection unit, and is conducive to improving the sensitivity of steam leakage detection. The upper part of the cooling tank is large, and the upper side wall area of ​​the cooling tank is large, which can increase the steam condensation surface area, can improve the efficiency of collecting condensed liquid, and is conducive to improving the sensitivity of steam leakage detection.

[0020] The utility model is further configured as follows: the cooling tank, the liquid detection unit and the processing module constitute a steam leakage detection device, the shell is provided with an inspection port and a cover for closing the inspection port, and the steam leakage detection device is installed on the inner side of the shell and close to the inspection port.

[0021] In the above technical solution, the steam leakage detection device is connected to the inner side of the shell and close to the inspection port. The steam leakage detection device can be inspected through the inspection port by opening the cover, which is convenient for the inspection of the steam leakage detection device.

[0022] The utility model is further configured as follows: the outer shell includes a shell and an insulation shell arranged in the shell, the insulation shell is sleeved on the outside of the steam treatment container and forms the interlayer with the steam treatment container, a heating coil is provided at the bottom of the steam treatment container, the upper end of the steam treatment container has an opening, and the outer shell is provided with an upper cover for covering and sealing the opening.

[0023] In the above technical solution, the liquid in the steam treatment container is heated by the heating coil. When the steam leaks, the steam leaks from the steam treatment container and enters the interlayer and is detected by the steam leakage detection device.

[0024] The utility model has the beneficial effects of directly detecting steam leakage through the liquid detection unit, having a relatively simple structure and being more sensitive. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0027] Figure 3 This is a schematic diagram of the structure of the utility model Figure 3 ;

[0028] Figure 4 This is a schematic diagram of the structure of the utility model Figure 4 .

[0029] In the figure: outer shell 1; shell body 11; insulation shell 12; upper cover 13; steam treatment container 2; interlayer 3; steam leakage detection device 4; cooling tank 41; lower opening 411; liquid detection unit 42; electrode 421; touch sensor 422; processing module 43; alarm function unit 431; control unit 432; power supply unit 44. DETAILED DESCRIPTION

[0030] In the description of this embodiment, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore, it cannot be understood as a limitation on the utility model. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] like Figures 1 to 4 As shown, a high-pressure steam device includes a shell 1 and a steam processing container 2 built into the shell 1, and the leaking gas of the steam processing container 2 flows into the interlayer 3 between the shell 1 and the steam processing container 2. The high-pressure steam device also includes a cooling tank 41, a liquid detection unit 42 and a processing module 43. The cooling tank 41 is arranged at the bottom of the interlayer 3 for cooling and liquefying the leaking gas in the interlayer 3. The liquid detection unit 42 is arranged at the bottom of the cooling tank 41 and is configured to be triggered by the liquid medium collected by the cooling tank 41. The processing module 43 is electrically connected to the liquid detection unit 42, and performs leakage detection according to the trigger signal of the liquid detection unit 42.

[0033] In this embodiment, when steam leaks, the steam condenses in the cooling tank 41 and drips into the bottom of the cooling tank 41. The liquid detection unit 42 arranged at the bottom of the cooling tank 41 is triggered by the condensed liquid, and the processing module 43 reminds the user of the steam leakage according to the trigger signal of the liquid detection unit 42. Among them, the interlayer 3 can control the direction of the leakage steam, and the steam can be concentrated to the cooling tank 41 through the interlayer 3, which can improve the steam collection efficiency and is beneficial to the sensitivity of steam leakage detection. In this embodiment, the steam leakage is directly detected by the liquid detection unit 42, and the structure is relatively simple and more sensitive. Among them, the condensed liquid is collected by the cooling tank 41, and the condensed liquid is automatically concentrated to the bottom of the cooling tank 41 under the action of gravity. The liquid detection unit 42 is fixed at the bottom of the cooling tank 41, which can be more easily triggered, which is beneficial to improve the sensitivity of steam leakage detection.

[0034] It should be noted that the processing module 43 can output signals to other platforms or directly issue an alarm prompt.

[0035] Specifically, Figures 2 to 3 As shown, the liquid detection unit 42 includes two electrodes 421 spaced apart, and both electrodes 421 are fixed at the bottom of the cooling tank 41. Both electrodes 421 are fixed at the bottom of the cooling tank 41. When there is no steam leakage, there is no condensed liquid at the bottom of the cooling tank 41, and the insulation between the two spaced electrodes 421 does not form an electrical conductivity path. When condensed liquid accumulates at the bottom of the cooling tank 41, the condensed liquid will cause an electrical conductivity path to be formed between the two electrodes 421, and current can flow between the two electrodes 421, thereby triggering the processing module 43 to remind the user that there is a steam leak.

[0036] Specifically, the spacing between the two electrodes 421 is preferably 3mm to 5mm. In the present embodiment, preferably, the spacing between the two electrodes 421 is 4mm, and the distance between the electrodes 421 is 4mm, which makes the spacing between the electrodes 421 too long, requiring a large amount of condensed liquid to make the two electrodes 421 conductive, and also does not make the spacing between the two electrodes 421 too short, and other tiny impurities can also make the two electrodes 421 conductive, which can ensure sensitivity while reducing the risk of false triggering. Of course, in another embodiment, the spacing between the two electrodes 421 is 3mm, while ensuring that impurities are reduced and the detection accuracy is higher. The triggering distance between the two electrodes 421 is shorter, the amount of condensed liquid required is less, and the detection accuracy is higher. In addition, when such a high steam leak detection is not required, in a certain embodiment, the spacing between the two electrodes 421 is 5mm.

[0037] In addition, a soluble electrolyte for enhancing the conductivity of the liquid medium is attached to the surface of the cooling tank 41. When the condensed liquid drips into the cooling tank 41, the soluble electrolyte dissolves in the condensed liquid, increasing the conductivity of the condensed liquid, thereby making it easier to form an electrical conductivity path, making it easier for the liquid detection unit 42 to detect a steam leakage signal, which is beneficial to improving the sensitivity of steam leakage detection.

[0038] Specifically, Figure 2 and Figure 3As shown, the cooling groove 41 is a funnel-shaped structure that is larger at the top and smaller at the bottom, and the upper end of the cooling groove 41 is open. The upper end of the cooling groove 41 is open, and under the action of gravity, steam or condensed liquid can more easily enter the cooling groove 41. At the same time, the cooling groove 41 is a funnel-shaped structure that is larger at the top and smaller at the bottom. The upper part is large and has a large area, which increases the collection area, is conducive to collecting condensed liquid, and can improve the sensitivity of steam leakage detection; the lower part is small, which can avoid the diffusion of condensed liquid, and can make the condensed liquid concentrate at the bottom of the cooling groove 41, which is easier to trigger the liquid detection unit 42, which is conducive to improving the sensitivity of steam leakage detection. The upper part of the cooling groove 41 is large, and the upper side wall area of ​​the cooling groove 41 is large, which can increase the steam condensation surface area, can improve the efficiency of collecting condensed liquid, and is conducive to improving the sensitivity of steam leakage detection.

[0039] Specifically, Figure 2 As shown, the high-pressure steam device also includes a power supply unit 44, a liquid detection unit 42, a processing module 43 and a power supply unit 44 are connected in series in sequence, and the processing module 43 has an alarm function unit 431. The power supply unit 44 supplies power to the liquid detection unit 42 and the processing module 43, and the steam leakage is detected by the liquid detection unit 42, and the steam leakage is reported by the alarm function unit 431. After the liquid detection unit 42 detects the condensed liquid, the corresponding alarm is triggered by the alarm function unit 431, and the power supply unit 44 provides continuous power. The liquid detection unit 42, the alarm function unit 431, and the power supply unit 44 are connected in series in sequence. When there is no steam leakage, the two electrodes 421 are not conductive, and the liquid detection unit 42 and the processing module 43 are not powered, which is more energy-saving and can increase the power supply time of the processing module 43.

[0040] In this embodiment, the alarm function unit 431 is a buzzer. Of course, in other embodiments, the alarm function unit 431 can also be a device with a prompting function such as an alarm flash light.

[0041] Of course it is understandable, Figure 3 and Figure 4As shown, in another embodiment, the processing module 43 is a control unit 432, and the high-pressure steam device also includes a power supply unit 44 and a heating unit for heating the steam processing container 2, and the heating unit, the liquid detection unit 42, and the power supply unit 44 are electrically connected to the processing module 43 respectively. The liquid detection unit 42 and the processing module 43 are powered by the power supply unit 44, and the steam leakage is detected by the liquid detection unit, and controlled by the control unit 432. The liquid detection unit 42, the power supply unit 44, and the heating unit are electrically connected to the processing module 43 respectively, and each component can communicate directly with the processing module 43. After the liquid detection unit detects the steam leakage, the control unit 432 can control the heating unit to stop heating. At the same time, the processing module 43 can collect and analyze information from each component, including recording the time and duration of the event, and taking specific response measures as needed. In addition, the processing module 43 also improves the customizability of steam leakage detection, can meet the steam leakage detection and alarm requirements in different scenarios, and can improve the reliability and stability of steam leakage detection.

[0042] Preferably, the processing module 43 further includes an alarm function unit 431 for directly giving an alarm prompt.

[0043] Specifically, Figure 1 As shown, the cooling tank 41, the liquid detection unit 42 and the processing module 43 constitute a steam leakage detection device 4, the housing 1 is provided with an inspection port and a cover for closing the inspection port, and the steam leakage detection device 4 is connected to the inner side of the housing 1 and close to the inspection port. The steam leakage detection device 4 is connected to the inner side of the housing 1 and close to the inspection port, and the steam leakage detection device 4 can be inspected through the inspection port by opening the cover, which is convenient for the steam leakage detection device 4 to be inspected.

[0044] Specifically, if Figure 1 As shown, the housing 1 includes a shell 11 and a heat-insulating shell 12 disposed in the shell 11. The heat-insulating shell 12 is sleeved on the outside of the steam treatment container 2 and forms the interlayer 3 with the steam treatment container 2. A heating coil is provided at the bottom of the steam treatment container 2. The upper end of the steam treatment container 2 has an opening. An upper cover 13 for covering and sealing the opening is provided on the housing 1. The liquid in the steam treatment container is heated by the heating coil. When the steam leaks, the steam leaks from the steam treatment container and enters the interlayer, and is detected by the steam leakage detection device 4.

[0045] Wherein, in this embodiment, the high pressure steam equipment is a high pressure steam cooker. Of course, it can be understood that in other embodiments, the high pressure steam equipment is a high pressure steam sterilizer and a high pressure steam cleaning machine.

[0046] It is understandable that the liquid detection unit 42 may also be other structures. Figure 4 As shown, in another embodiment, the liquid detection unit 42 is a touch sensing element 422. The condensed liquid drips onto the touch sensing element 422, and the touch sensing element 422 detects the condensed liquid. The processing module performs air leakage detection according to the trigger signal of the liquid detection unit.

[0047] Specifically, the touch sensing element 422 may be a suitable component such as a capacitive touch chip.

[0048] Among them, Figure 4 As shown, the bottom of the cooling tank 41 is provided with a lower opening 411, and the touch sensing element 422 is arranged directly below the lower opening 411, so that the water vapor dripping from the lower opening 411 can drip on the touch sensing element 422. When the condensed liquid in the cooling tank 41 drips, the water vapor will fall freely through the lower opening 411 and will directly contact the touch sensing element 422 arranged below, thereby completing the steam leakage detection. It should be noted that the outer shell 1 of the cooling tank 41 extends and fixes the touch sensing element 422 to the bottom of the cooling tank 41.

[0049] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above-mentioned utility model, which fall within the scope of protection of the present invention.

Claims

1. A high-pressure steam device, comprising a housing and a steam treatment container built in the housing, wherein leaked gas from the steam treatment container flows into an interlayer between the housing and the steam treatment container, Its characteristics are: The high-pressure steam equipment also includes a cooling tank, a liquid detection unit and a processing module. The cooling tank is arranged at the bottom of the interlayer for cooling the leaked gas in the liquefied interlayer. The liquid detection unit is arranged at the bottom of the cooling tank and is configured to be triggered by the liquid medium collected by the cooling tank. The processing module is electrically connected to the liquid detection unit and performs leakage detection according to the trigger signal of the liquid detection unit.

2. A high pressure steam device according to claim 1, Its characteristics are: The liquid detection unit comprises two electrodes which are arranged at intervals, and the two electrodes are both fixed at the bottom of the cooling tank.

3. A high pressure steam device according to claim 2, Its characteristics are: The processing module is an alarm function unit, the high-pressure steam equipment also includes a power supply unit, the liquid detection unit, the processing module and the power supply unit are connected in series in sequence to form a detection circuit, and the detection circuit is disconnected at the position of the liquid detection unit.

4. A high pressure steam device according to claim 2, Its characteristics are: A soluble electrolyte for enhancing the conductivity of the liquid medium is attached to the surface of the cooling tank.

5. A high pressure steam device according to claim 1, Its characteristics are: The liquid detection unit is a touch sensing element.

6. A high pressure steam device according to claim 5, Its characteristics are: A lower opening is provided at the bottom of the cooling groove, and the touch sensing element is arranged directly below the lower opening, so that water vapor dripping from the lower opening can drip onto the touch sensing element.

7. A high pressure steam device according to claim 1, Its characteristics are: The processing module is a control unit. The high-pressure steam equipment also includes a power supply unit and a heating unit for heating the steam processing container. The heating unit, the liquid detection unit and the power supply unit are electrically connected to the processing module respectively.

8. A high pressure steam device according to claim 1, Its characteristics are: The cooling groove is a funnel-shaped structure that is larger at the top and smaller at the bottom, and the upper end of the cooling groove is open.

9. A high pressure steam device according to claim 1, Its characteristics are: The cooling tank, the liquid detection unit and the processing module constitute a steam leakage detection device. The shell is provided with an inspection port and a cover for closing the inspection port. The steam leakage detection device is installed on the inner side of the shell and close to the inspection port.

10. A high pressure steam device according to claim 1, Its characteristics are: The outer shell includes a shell and an insulation shell arranged in the shell, the insulation shell is arranged on the outside of the steam treatment container and forms the interlayer with the steam treatment container, a heating coil is arranged at the bottom of the steam treatment container, the upper end of the steam treatment container has an opening, and the outer shell is provided with an upper cover for covering and sealing the opening.