Pressure steam sterilization pot with anti-scald structure
By utilizing the kinetic energy of steam to drive a fan assembly for heat exchange and cooling in a pressure steam sterilizer, and combining this with an expansion valve to achieve multi-stage cooling, the problems of high-temperature and high-pressure steam burns and energy consumption are solved, achieving safe and efficient steam discharge and energy recovery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANTOU TIANJIAN TESTING TECHNOLOGY SERVICE CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-21
AI Technical Summary
Existing pressure steam sterilizers are prone to scalding operators with high-temperature and high-pressure steam during depressurization and exhaust, and the kinetic and thermal energy of the steam is not effectively recovered, increasing energy consumption.
The steam fan assembly utilizes the kinetic energy of the steam itself to draw in ambient temperature air for heat exchange and cooling. Combined with an expansion valve, it achieves multi-stage cooling. The steam is finally discharged in a low-temperature and low-pressure state, and the heat is recovered for water tank preheating.
It effectively prevents the risk of burns, reduces energy consumption, improves energy utilization efficiency, and achieves a safe and efficient pressure relief and exhaust process.
Smart Images
Figure CN224523644U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of sterilizer technology, specifically, it relates to a pressure steam sterilizer with an anti-scalding structure. Background Technology
[0002] Pressure steam sterilizers typically consist of a sealed sterilization chamber and heating components. High-temperature, high-pressure steam is generated through heating, and the high-temperature, high-pressure environment within the sterilization chamber is maintained for a set time to complete sterilization. However, existing technologies have significant drawbacks in the depressurization and venting process after sterilization.
[0003] 1. The high-temperature and high-pressure steam (usually exceeding 121°C and 0.1MPa) in the sterilization chamber needs to be discharged through the exhaust structure. Existing equipment mostly adopts direct exhaust or simple valve throttling. The discharged steam is still in a high-temperature and high-pressure state, which can easily cause burns to operators. The safety risk is even higher when there is frequent operation or the exhaust port is not designed properly.
[0004] Second, during the depressurization process, the kinetic and thermal energy of the high-temperature and high-pressure steam is not effectively recovered. At the same time, in order to cool the steam, some equipment needs to be equipped with additional cooling devices such as fans. These devices rely on external power to drive, which increases energy consumption and does not meet energy-saving requirements.
[0005] In view of the above problems, a pressure steam sterilizer with an anti-scalding structure is proposed. Utility Model Content
[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a pressure steam sterilizer with an anti-scalding structure that can overcome or at least partially solve the above problems.
[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:
[0008] A pressure steam sterilizer with an anti-scalding structure includes an installation box and a cover rotatably mounted on the installation box. A high-temperature sterilization module is installed inside the installation box, and a cooling and exhaust module is installed inside the cover. The cooling and exhaust module includes a steam fan assembly, a heat exchange assembly, and an expansion valve installed in the cover. The two ends of the heat exchange assembly are connected to the steam discharge end of the steam fan assembly and the input end of the expansion valve, respectively. When pressure is released, high-temperature, high-pressure steam drives the steam fan assembly to rotate and draw in ambient air from the external environment, forming an ambient airflow that blows towards the heat exchange assembly. The high-temperature, high-pressure steam driving the steam fan assembly enters the heat exchange assembly and exchanges heat with the ambient airflow, cooling it down. The initially cooled high-pressure air enters the expansion valve, expands, and is then discharged, undergoing secondary cooling, thus changing the steam originally discharged in a high-temperature, high-pressure state to a low-temperature, low-pressure state before being discharged.
[0009] In a preferred embodiment of this utility model: the steam fan assembly includes an impeller box and air guide tubes fixedly installed at both ends of the impeller box. The two sets of air guide tubes are fixedly connected to both sides of the box cover. An air outlet is provided on the air guide tube. A rotating shaft is rotatably installed inside the impeller box. A blade plate fixedly connected to the rotating shaft is provided inside the impeller box. Both ends of the rotating shaft extend into the two sets of air guide tubes and are fixedly installed with fan blades. An air inlet pipe extending into the high-temperature sterilization module is fixedly installed at the bottom of the impeller box. A second control valve is fixedly installed on the air inlet pipe. The exhaust end of the impeller box is connected to the heat exchange assembly through a first exhaust pipe.
[0010] In a preferred embodiment of this utility model: a mounting frame is fixedly installed inside the air guide duct, a motor is fixedly installed on the mounting frame, a drive shaft is fixedly installed at the output end of the motor, and the drive shaft is connected to the rotating shaft through a ratchet mechanism.
[0011] In a preferred embodiment of this utility model: the heat exchange assembly includes a first heat-conducting plate and a second heat-conducting plate fixedly installed inside the cover. The second heat-conducting plate is fixedly installed on the top of the first heat-conducting plate. Both the first and second heat-conducting plates are provided with volute-shaped guide grooves. The two sets of volute-shaped guide grooves form a complete steam flow channel. The center of the first heat-conducting plate is provided with a transfer chamber communicating with the volute-shaped guide grooves. The exhaust end of the first exhaust pipe is connected to the transfer chamber. A second exhaust pipe is fixedly installed on the top of the second heat-conducting plate. The second exhaust pipe is fixedly connected to the exhaust end of the volute-shaped guide grooves. An expansion valve is fixedly installed on the second exhaust pipe. The first and second heat-conducting plates are provided with a first ventilation hole that runs vertically through them.
[0012] As a preferred embodiment of this utility model: a water tank is fixedly installed at the top center of the second heat-conducting plate, an inlet pipe is fixedly installed at the top of the water tank, a one-way valve is provided in the inlet pipe, a second drain pipe is fixedly installed at the bottom of the water tank, the output end of the second drain pipe extends into the high-temperature sterilization module, a third control valve is fixedly installed on the second drain pipe, and a second ventilation hole coaxial with the first ventilation hole is provided on the water tank.
[0013] As a preferred embodiment of this utility model: the high-temperature sterilization module includes an inner liner fixedly installed in an installation box, an insulation cavity is provided between the inner liner and the installation box, an electric heater is fixedly installed on the bottom inner wall of the inner liner, a limiting seat is fixedly installed on the side wall of the inner liner, a material cylinder is placed on the limiting seat, and through holes are provided on the side wall and bottom of the material cylinder. A detection sensor module is fixedly installed on the inner liner.
[0014] In a preferred embodiment of this utility model, a first drain pipe communicating with the inner liner is fixedly installed at the bottom of the installation box, and a first control valve is fixedly installed on the first drain pipe.
[0015] In a preferred embodiment of this utility model: a fixing bolt is provided on the box cover, the fixing bolt is threadedly connected to the mounting box, and a limit ring is fixedly installed on the fixing bolt. When the box cover is closed, the fixing bolt is threadedly fixed to the mounting box, and the limit ring abuts against the top of the box cover. A sealing ring is fixedly installed at the bottom of the box cover.
[0016] In a preferred embodiment of this utility model, a universal wheel is fixedly installed at the bottom of the mounting box, and a display control board is fixedly installed at the front end of the mounting box.
[0017] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention uses the high temperature and high pressure kinetic energy of steam itself to drive the steam fan assembly to work, generating room temperature airflow without additional energy consumption. This airflow and the high temperature and high pressure steam fully exchange heat in the heat exchange assembly to achieve initial cooling. Then, it expands through the expansion valve to further cool down and reduce pressure, and finally converts the original high temperature and high pressure steam into a low temperature and low pressure state for safe discharge, fundamentally eliminating the risk of burns caused by direct discharge of high temperature steam; at the same time, the recovery and utilization of steam kinetic energy and the preheating of water in the water tank by heat during the heat exchange process reduce additional energy consumption and improve energy utilization efficiency.
[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description
[0019] In the attached diagram:
[0020] Figure 1 This utility model presents a structural schematic diagram of a pressure steam sterilizer with an anti-scalding structure. Figure 1 ;
[0021] Figure 2 This utility model presents a structural schematic diagram of a pressure steam sterilizer with an anti-scalding structure. Figure 2 ;
[0022] Figure 3 This is a three-dimensional sectional view of a pressure steam sterilizer with an anti-scalding structure proposed in this utility model;
[0023] Figure 4 for Figure 3 Schematic diagram of the structure at point A;
[0024] Figure 5 This is a schematic diagram of the heat exchange component of a pressure steam sterilizer with an anti-scalding structure proposed in this utility model;
[0025] Figure 6 This is a schematic diagram of the water tank of a pressure steam sterilizer with an anti-scalding structure proposed in this utility model.
[0026] Figure 7 This is a schematic diagram of the first heat-conducting plate of a pressure steam sterilizer with an anti-scalding structure proposed in this utility model.
[0027] In the diagram: 1. Mounting box; 11. Display control board; 12. Casters; 13. Insulation chamber; 14. Sealing ring; 2. Box cover; 21. Fixing bolts; 22. Limiting ring; 3. Inner liner; 31. Limiting seat; 32. Detection sensor module; 33. First drain pipe; 34. First control valve; 4. Electric heater; 5. Material cylinder; 51. Through hole; 6. Impeller box; 61. First exhaust pipe; 62. Inlet pipe; 63. Second control valve; 64. 65. Air outlet; 7. Expansion valve; 71. First heat conduction plate; 72. Second heat conduction plate; 73. First ventilation hole; 74. Volute guide groove; 75. Transfer chamber; 76. Second exhaust pipe; 8. Water tank; 81. Water inlet pipe; 82. Second ventilation hole; 83. Second drain pipe; 84. Third control valve; 9. Rotating shaft; 91. Fan blade; 92. Blade; 93. Drive shaft; 94. Mounting bracket; 95. Motor; 96. Ratchet mechanism. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.
[0029] Example: Refer to Figures 1-7 A pressure steam sterilizer with an anti-scalding structure includes an installation box 1 and a cover 2 that is rotatably mounted on the installation box 1. The installation box 1 is equipped with a high-temperature sterilization module, and the cover 2 is equipped with a cooling and exhaust module.
[0030] Reference Figures 1-7 The cooling and exhaust module includes a steam fan assembly, a heat exchange assembly, and an expansion valve 7. The expansion valve 7 is located at the exhaust end of the heat exchange assembly. When the pressure is released, the high-temperature and high-pressure steam drives the steam fan assembly to rotate and draw in ambient air from the external environment to form an ambient airflow that blows towards the heat exchange assembly. The high-temperature and high-pressure steam that drives the steam fan assembly enters the heat exchange assembly and exchanges heat with the ambient airflow to cool it down. The high-pressure air that has been initially cooled enters the expansion valve 7 and is expanded and discharged through the expansion valve 7 for secondary cooling, so that the steam that was originally discharged in a high-temperature and high-pressure state is transformed into a low-temperature and low-pressure state for discharge.
[0031] Reference Figures 2-5The steam fan includes an impeller box 6 and air guide tubes 64 fixedly installed at both ends of the impeller box 6. The two sets of air guide tubes 64 are fixedly connected to both sides of the box cover 2. An air outlet 65 is provided on the air guide tube 64. A rotating shaft 9 is rotatably installed inside the impeller box 6. A blade 92 fixedly connected to the rotating shaft 9 is provided inside the impeller box 6. Both ends of the rotating shaft 9 extend into the two sets of air guide tubes 64 and are fixedly installed with fan blades 91. An air inlet pipe 62 extending into the high-temperature sterilization module is fixedly installed at the bottom of the impeller box 6. A second control valve 63 is fixedly installed on the air inlet pipe 62. The exhaust end of the impeller box 6 is connected to the heat exchange component through a first exhaust pipe 61.
[0032] When the sterilizer needs to be depressurized, the high-temperature and high-pressure steam in the high-temperature sterilization module enters the impeller box 6 through the air inlet pipe 62. At this time, the second control valve 63 on the air inlet pipe 62 opens to control the timing of steam entry. The steam impacts the blades 92 fixed to the shaft 9 inside the impeller box 6, pushing the blades 92 and the shaft 9 to rotate at high speed, realizing the conversion of steam kinetic energy into mechanical energy, providing driving force for the fan. When the shaft 9 rotates, the fan blades 91 extending to the two sets of air guide tubes 64 at both ends rotate synchronously. The two sets of air guide tubes 64 are fixedly connected to both sides of the box cover 2 to form an air channel. When the fan blades 91 rotate, they draw ambient air from the outside of the box cover 2 through the air guide tubes 64, forming two directional airflows, which are discharged into the box cover 2 through the air outlet 65, and then flow to the heat exchange component to provide a low-temperature medium for subsequent heat exchange. The steam that drives the blades 92 to rotate is discharged from the exhaust end of the impeller box 6 through the first exhaust pipe 61 to the heat exchange component, entering the next round of cooling process.
[0033] In addition, a mounting bracket 94 is fixedly installed inside one of the air guide tubes 64, a motor 95 is fixedly installed on the mounting bracket 94, and a drive shaft 93 is fixedly installed at the output end of the motor 95. The drive shaft 93 is connected to the rotating shaft 9 through a ratchet mechanism 96.
[0034] When in use, if the discharged steam pressure is sufficient, the motor 95 is in the off state. Under the action of the ratchet mechanism 96, the impeller drives the rotating shaft 9 to rotate, while the drive shaft 93 is in the stationary state. When the steam pressure is insufficient, the motor 95 starts. The motor 95 drives the rotating shaft 9 to rotate through the drive shaft 93 and the ratchet mechanism 96, thereby directly driving the two sets of fan blades 91 to rotate.
[0035] Reference Figures 5-7The heat exchange assembly includes a first heat-conducting plate 71 and a second heat-conducting plate 72 fixedly installed inside the cover 2. The second heat-conducting plate 72 is fixedly installed on the top of the first heat-conducting plate 71. Both the first heat-conducting plate 71 and the second heat-conducting plate 72 are provided with volute-shaped guide grooves 74. The two sets of volute-shaped guide grooves 74 form a complete steam flow channel. The center of the first heat-conducting plate 71 is provided with a transfer chamber 75 that communicates with the volute-shaped guide grooves 74. The exhaust end of the first exhaust pipe 61 is connected to the transfer chamber 75. The top of the second heat-conducting plate 72 is fixedly installed with a second exhaust pipe 76. The second exhaust pipe 76 is fixedly connected to the exhaust end of the volute-shaped guide grooves 74. An expansion valve 7 is fixedly installed on the second exhaust pipe 76. The first heat-conducting plate 71 and the second heat-conducting plate 72 are provided with a first ventilation hole 73 that runs vertically through them. The airflow generated by the fan blades 91 flows from the bottom of the first heat-conducting plate 71 through the first ventilation hole 73 to the top of the second heat-conducting plate 72.
[0036] Reference Figure 5 A water tank 8 is fixedly installed at the top center of the second heat-conducting plate 72. A water inlet pipe 81 is fixedly installed at the top of the water tank 8. A one-way valve is installed inside the water inlet pipe 81. A second drain pipe 83 is fixedly installed at the bottom of the water tank 8. The output end of the second drain pipe 83 extends into the high-temperature sterilization module. A third control valve 84 is fixedly installed on the second drain pipe 83. A second ventilation hole 82 is provided on the water tank 8, which is coaxial with the first ventilation hole 73.
[0037] Reference Figure 1 The bottom of the mounting box 1 is fixedly equipped with casters 12, and the front end of the mounting box 1 is fixedly equipped with a display control board 11.
[0038] Reference Figure 1 and Figure 4 The cover 2 is provided with a fixing bolt 21, which is threadedly connected to the mounting box 1. A limit ring 22 is fixedly installed on the fixing bolt 21. When the cover 2 is closed, the fixing bolt 21 is threadedly fixed to the mounting box 1, and the limit ring 22 abuts against the top of the cover 2. A sealing ring 14 is fixedly installed at the bottom of the cover 2.
[0039] Reference Figures 1-3 The high-temperature sterilization module includes an inner liner 3 fixedly installed inside the installation box 1. A heat insulation cavity 13 is provided between the inner liner 3 and the installation box 1. An electric heater 4 is fixedly installed on the bottom inner wall of the inner liner 3. A limiting seat 31 is fixedly installed on the side wall of the inner liner 3. A material cylinder 5 is placed on the limiting seat 31. Through holes 51 are provided on the side wall and bottom of the material cylinder 5. A detection sensor module 32 is fixedly installed on the inner liner 3. The detection sensor module 32 includes a pressure sensor and a temperature sensor. A first drain pipe 33 communicating with the inner liner 3 is fixedly installed at the bottom of the installation box 1. A first control valve 34 is fixedly installed on the first drain pipe 33.
[0040] In summary, the usage procedure of this device is as follows:
[0041] During the preparation stage, the items to be sterilized are first placed into the material cylinder 5, which has through holes 51 on both the side wall and the bottom. Then, the material cylinder 5 is placed on the limiting seat 31 inside the inner liner 3. The through holes 51 can ensure that the subsequent steam fully contacts the items. After that, the lid 2 is closed and the fixing bolts 21 on the lid 2 are tightened to make it threadedly connected to the installation box 1. At this time, the limiting ring 22 on the fixing bolt 21 abuts against the top of the lid 2. Together with the sealing ring 14 at the bottom of the lid 2, the inner liner 3 forms a sealed space, providing conditions for subsequent high temperature and high pressure sterilization. At the same time, relevant parameters can be set through the display control board 11 at the front of the installation box 1.
[0042] After the sterilization stage is started, the high-temperature sterilization module starts to work. The electric heater 4 on the bottom inner wall of the inner liner 3 is powered on and heats up the water or existing steam in the liner, so that high-temperature and high-pressure steam is generated in the inner liner 3. The heat insulation cavity 13 between the inner liner 3 and the installation box 1 effectively reduces the heat loss to the outside and maintains the high-temperature and high-pressure environment in the inner liner 3. The high-temperature and high-pressure steam penetrates to all parts of the item through the through hole 51 of the material cylinder 5 to achieve sterilization.
[0043] After sterilization, the pressure relief and exhaust stage begins. The cooling and exhaust module then comes into play. First, the second control valve 63 on the air inlet pipe 62 is opened. The high-temperature and high-pressure steam in the inner liner 3 enters the impeller box 6 through the air inlet pipe 62. It impacts the blade 92, which is fixedly connected to the shaft 9 inside the impeller box 6, and pushes the blade 92 and the shaft 9 to rotate at high speed. When the shaft 9 rotates, the fan blades 91 extending to the two sets of air guide ducts 64 at both ends rotate synchronously. The air guide ducts 64 are fixedly connected to both sides of the box cover 2 to form an air channel. The fan blades 91 rotate and draw ambient air from the outside of the box cover 2 through the air guide ducts 64, forming two directional airflows. These airflows are discharged into the box cover 2 through the air outlet 65 and flow to the heat exchange components. If the steam pressure is insufficient, the motor 95 on the mounting bracket 94 in one set of air guide ducts 64 is started. The output end of the motor 95 drives the drive shaft 93 to rotate. The drive shaft 93 drives the shaft 9 to rotate through the ratchet mechanism 96, ensuring that the fan blades 91 continue to work.
[0044] Steam generated by the rotating impeller blade 92 is discharged from the exhaust end of the impeller box 6 through the first exhaust pipe 61 to the heat exchange assembly, enters the transfer chamber 75 in the center of the first heat-conducting plate 71, and then flows into the complete steam flow channel formed by the volute guide groove 74 on the first heat-conducting plate 71 and the second heat-conducting plate 72. The airflow generated by the fan blade 91 flows from the bottom of the first heat-conducting plate 71 through the first ventilation hole 73 that runs vertically through it, and flows to the top of the second heat-conducting plate 72. During the flow, the steam in the volute guide groove 74 is heated by the heat-conducting plates. The exchange of heat between the steam and the water tank 8 at the top center of the second heat-conducting plate 72 allows for initial cooling of the steam. Cold water is injected into the water tank 8 through the one-way valve in the top water inlet pipe 81. When the airflow generated by the fan blades 91 passes through the second ventilation hole 82 on the water tank 8, which is coaxial with the first ventilation hole 73, it can heat the water in the water tank 8. In addition, when the high-temperature and high-pressure steam flows in the front half of the steam flow channel, it can exchange heat with the water in the water tank 8 through the second heat-conducting plate 72. When the next batch of materials is sterilized at high temperature, the heated water can be directly discharged into the inner tank 3.
[0045] After initial cooling, the high-pressure steam enters the expansion valve 7 through the second exhaust pipe 76 at the top of the second heat conduction plate 72. It expands and is discharged through the expansion valve 7, achieving further cooling and allowing the steam to be discharged in a low-temperature and low-pressure state, thus completing the entire pressure relief and exhaust process. In addition, the casters 12 at the bottom of the mounting box 1 facilitate the movement of the device.
[0046] Through its scientific structural design and coordinated operation, this device demonstrates significant advantages in sterilization efficiency, operational safety, energy utilization, and ease of use, as detailed below:
[0047] In terms of sterilization effect, in the high-temperature sterilization module, the heat insulation cavity 13 between the inner liner 3 and the installation box 1 can effectively lock in the temperature, and together with the electric heater 4, it can stably generate high-temperature and high-pressure steam; the through holes 51 on the side wall and bottom of the material cylinder 5 ensure that the steam fully penetrates the items to be sterilized, and with the pressure sensor and temperature sensor in the detection sensor module 32 accurately monitoring the parameters, thorough sterilization can be achieved, meeting the sterilization requirements of various items.
[0048] In terms of safety protection, the cooling and exhaust module constructs a multi-level anti-scalding system: high-temperature and high-pressure steam first enters the impeller box 6 through the air inlet pipe 62, impacting the blades 92 and driving the rotating shaft 9 and the fan blades 91 in the air guide tube 64 to rotate, drawing in room temperature air without additional energy consumption; the steam then enters the heat exchange component through the first exhaust pipe 61, flowing in the volute guide grooves 74 of the first heat-conducting plate 71 and the second heat-conducting plate 72, fully exchanging heat with the room temperature airflow passing through the first ventilation hole 73 to achieve initial cooling; the water tank 8 at the top of the second heat-conducting plate 72 is filled with water through the water inlet pipe 81. When cold water is introduced, steam can exchange heat with the cold water through the second heat-conducting plate 72. When the airflow passes through the second ventilation hole 82, it can also heat the cold water, further improving the cooling efficiency. Finally, the initially cooled steam enters the expansion valve 7 through the second exhaust pipe 76, and achieves secondary cooling through expansion and pressure reduction, so that the steam that was originally in a high temperature and high pressure state is discharged in a low temperature and low pressure state. At the same time, when the steam pressure is insufficient, the motor 95 can assist in driving the rotating shaft 9 through the drive shaft 93 and the ratchet mechanism 96 to ensure that the fan blade 91 works continuously, avoiding the risk of burns from direct discharge of high temperature steam throughout the process.
[0049] In terms of energy utilization, the kinetic energy of steam directly drives the fan blades 91 to rotate, reducing additional energy consumption; the water tank 8 stores heat through heat exchange with steam and airflow, and the heated water can be discharged into the inner tank 3 through the second drain pipe 83 and the third control valve 84 for use in the next round of sterilization, reducing the energy consumption of repeated heating and achieving energy-saving cycle.
[0050] In terms of ease of use, the casters 12 at the bottom of the mounting box 1 facilitate the movement of the device; the display control panel 11 allows for intuitive parameter setting; the box cover 2 achieves reliable sealing through fixing bolts 21, limit rings 22 and sealing rings 14; the first drain pipe 33 and the first control valve 34 at the bottom of the inner liner 3 facilitate sewage discharge. The overall structure balances stability and ease of operation, greatly improving the practicality of the device.
[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the invention.
[0052] Without imposing any limitations, although the present invention has been disclosed above with reference to preferred embodiments,
[0053] This invention is not intended to limit the scope of the invention. Any person skilled in the art can use this invention without departing from its intended meaning.
[0054] Outside the scope of this utility model's technical solution, some modifications can be made using the above-described technical content.
[0055] Equivalent embodiments with modifications or alterations are permitted, provided they do not depart from the scope of this utility model.
[0056] The content of the technical solution, and any modifications made to the above embodiments based on the technical essence of this utility model.
[0057] Simple modifications, equivalent changes, and alterations are all within the scope of this utility model.
Claims
1. A pressure steam sterilizer with an anti-scalding structure, comprising a mounting box (1) and a box cover (2) rotatably mounted on the mounting box (1), characterized in that, The installation box (1) is equipped with a high-temperature sterilization module, and the box cover (2) is equipped with a cooling and exhaust module. The cooling and exhaust module includes a steam fan assembly, a heat exchange assembly and an expansion valve (7) installed in the cover (2). The two ends of the heat exchange assembly are respectively connected to the steam discharge end of the steam fan assembly and the input end of the expansion valve (7). When the pressure is released, the high-temperature and high-pressure steam drives the steam fan assembly to rotate and draw in the ambient air in the external environment to form an ambient airflow that blows towards the heat exchange assembly. The high-temperature and high-pressure steam that drives the steam fan assembly enters the heat exchange assembly and exchanges heat with the ambient airflow to cool down. The high-pressure air that has been initially cooled enters the expansion valve (7) to expand and then is discharged to undergo secondary cooling, so that the steam that was originally discharged in a high-temperature and high-pressure state is transformed into a low-temperature and low-pressure state for discharge.
2. A pressure steam sterilizer with an anti-scalding structure according to claim 1, characterized in that, The steam fan assembly includes an impeller box (6) and air guide tubes (64) fixedly installed at both ends of the impeller box (6). The two sets of air guide tubes (64) are fixedly connected to both sides of the box cover (2). An air outlet (65) is provided on the air guide tube (64). A rotating shaft (9) is rotatably installed inside the impeller box (6). A blade plate (92) fixedly connected to the rotating shaft (9) is provided inside the impeller box (6). Both ends of the rotating shaft (9) extend into the two sets of air guide tubes (64) and are fixedly installed with fan blades (91). An air inlet pipe (62) extending into the high-temperature sterilization module is fixedly installed at the bottom of the impeller box (6). A second control valve (63) is fixedly installed on the air inlet pipe (62). The exhaust end of the impeller box (6) is connected to the heat exchange assembly through a first exhaust pipe (61).
3. A pressure steam sterilizer with an anti-scalding structure according to claim 2, characterized in that, An installation frame (94) is fixedly installed inside the air guide tube (64). A motor (95) is fixedly installed on the installation frame (94). A drive shaft (93) is fixedly installed at the output end of the motor (95). The drive shaft (93) is connected to the rotating shaft (9) through a ratchet mechanism (96).
4. A pressure steam sterilizer with an anti-scalding structure according to claim 2, characterized in that, The heat exchange assembly includes a first heat-conducting plate (71) and a second heat-conducting plate (72) fixedly installed inside the cover (2). The second heat-conducting plate (72) is fixedly installed on the top of the first heat-conducting plate (71). Both the first heat-conducting plate (71) and the second heat-conducting plate (72) are provided with volute-shaped guide grooves (74). The two sets of volute-shaped guide grooves (74) form a complete steam flow channel. The center of the first heat-conducting plate (71) is provided with a transfer chamber (75) that communicates with the volute-shaped guide grooves (74). The exhaust end of the first exhaust pipe (61) is connected to the transfer chamber (75). The top of the second heat-conducting plate (72) is fixedly installed with a second exhaust pipe (76). The second exhaust pipe (76) is fixedly connected to the exhaust end of the volute-shaped guide grooves (74). An expansion valve (7) is fixedly installed on the second exhaust pipe (76). The first heat-conducting plate (71) and the second heat-conducting plate (72) are provided with a first ventilation hole (73) that runs vertically through the top and bottom.
5. A pressure steam sterilizer with an anti-scalding structure according to claim 4, characterized in that, A water tank (8) is fixedly installed at the top center of the second heat-conducting plate (72). A water inlet pipe (81) is fixedly installed at the top of the water tank (8). A one-way valve is installed inside the water inlet pipe (81). A second drain pipe (83) is fixedly installed at the bottom of the water tank (8). The output end of the second drain pipe (83) extends into the high-temperature sterilization module. A third control valve (84) is fixedly installed on the second drain pipe (83). A second ventilation hole (82) coaxial with the first ventilation hole (73) is provided on the water tank (8).
6. A pressure steam sterilizer with an anti-scalding structure according to claim 1, characterized in that, The high-temperature sterilization module includes an inner liner (3) fixedly installed in the installation box (1), a heat insulation cavity (13) is provided between the inner liner (3) and the installation box (1), an electric heater (4) is fixedly installed on the bottom inner wall of the inner liner (3), a limiting seat (31) is fixedly installed on the side wall of the inner liner (3), a material cylinder (5) is placed on the limiting seat (31), and through holes (51) are provided on the side wall and bottom of the material cylinder (5). A detection sensor module (32) is fixedly installed on the inner liner (3).
7. A pressure steam sterilizer with an anti-scalding structure according to claim 6, characterized in that, The bottom of the installation box (1) is fixedly installed with a first drain pipe (33) that connects to the inner liner (3), and a first control valve (34) is fixedly installed on the first drain pipe (33).
8. A pressure steam sterilizer with an anti-scalding structure according to claim 1, characterized in that, The cover (2) is provided with a fixing bolt (21), which is threadedly connected to the mounting box (1). A limit ring (22) is fixedly installed on the fixing bolt (21). When the cover (2) is closed, the fixing bolt (21) is threadedly fixed to the mounting box (1), and the limit ring (22) abuts against the top of the cover (2). A sealing ring (14) is fixedly installed at the bottom of the cover (2).
9. A pressure steam sterilizer with an anti-scalding structure according to claim 1, characterized in that, The bottom of the mounting box (1) is fixedly equipped with casters (12), and the front end of the mounting box (1) is fixedly equipped with a display control board (11).