A pulsed vacuum steam sterilizer

Abstract

This invention discloses a pulsed vacuum steam sterilizer, comprising an inner chamber, several jackets arranged linearly around the outer periphery of the inner chamber, a liquid injection pipe for supplying liquid, several dispensing pipes, one end of which is connected to the injection pipe and the other end of which is connected to each of the jackets, and an electromagnetic induction coil wound around the injection pipe and each dispensing pipe. Each electromagnetic induction coil directly heats the liquid in each pipe via electromagnetic induction, avoiding excessive heat loss during liquid or steam transport and effectively improving heating efficiency. Furthermore, by directly placing the electromagnetic induction coils outside the pipes, this integrated design eliminates the need for a steam generator and avoids the need for excessively long pipes between the jackets and the steam generator to transport steam, simplifying the overall structure, effectively reducing space occupation, and resulting in a more compact overall structure.

Description

Technical Field

[0001] This invention relates to the field of sterilization equipment, and in particular to a pulsed vacuum steam sterilizer. Background Technology

[0002] As a common disinfection and sterilization device, the pulsed vacuum steam sterilizer relies on the physical property of saturated steam releasing a large amount of latent heat when condensing and the strong penetrating power of high-temperature saturated steam under high temperature and humidity conditions. After a set constant temperature time, it kills bacteria on the surface of the items to be sterilized, thereby achieving the purpose of sterilization and disinfection.

[0003] Existing pulsed vacuum steam sterilizers typically have a built-in steam generator, which uses electricity, natural gas, or fuel oil to heat water into steam. When the steam generator's combustion chamber heats the purified water to the appropriate temperature, the purified water evaporates to produce steam. After dry-wet separation, the saturated steam is transported to the jacket via pipeline. Due to the long pipeline distance, there is a significant heat loss during steam transport, resulting in relatively low heating efficiency for existing steam generators. Furthermore, the installation of pipelines and the steam generator increases the overall space required, making the structure less compact.

[0004] Therefore, how to improve the heating efficiency and structural compactness of existing pulsed vacuum steam sterilizers is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a pulsed vacuum steam sterilizer, wherein an electromagnetic induction coil is fitted around the outer periphery of the injection pipe and each dispensing pipe, so as to directly heat the liquid in each pipe by electromagnetic induction, thereby avoiding excessive heat loss during the liquid or steam transportation process, resulting in high heating efficiency and a compact structure.

[0006] The pulsed vacuum steam sterilizer provided by the present invention includes:

[0007] Interior room;

[0008] Several jackets are wrapped around the outer perimeter of the inner and outer walls and distributed linearly.

[0009] Injection tubing used for supplying liquids;

[0010] Several dispensing tubes, one end of which is connected to the injection tube and the other end of which is connected to each of the jackets in a corresponding manner.

[0011] An electromagnetic induction coil is wound around the outer circumference of the injection pipe and each dispensing pipe and used to heat the liquid into steam.

[0012] Preferably, each jacket is equipped with a temperature detection device, and all electromagnetic induction coils and all temperature detection devices are connected to the controller; when any temperature detection device detects that the current temperature of the jacket it is in exceeds the preset range, the controller is used to adjust the power of the electromagnetic induction coil installed outside the corresponding connected liquid separator.

[0013] Preferably, each dispensing tube is equipped with a liquid level detection device connected to the controller, and also includes a liquid level display and a liquid level alarm connected to the controller; the controller is used to control the liquid level display to display the liquid level information fed back by all liquid level detection devices, and is also used to activate the liquid level alarm when the current liquid level of any dispensing tube exceeds the preset liquid level.

[0014] Preferably, the winding length of the electromagnetic induction coil wound around each dispensing tube is equal to the height of its lowest liquid level.

[0015] Preferably, the injection tube and all the dispensing tubes are covered with a heat-insulating sleeve for the electromagnetic induction coil to be wound.

[0016] Preferably, each jacket is connected to the inner chamber via a steam pipe, and each steam pipe is equipped with a control valve.

[0017] Preferably, any electromagnetic induction coil fitted outside the injection tube is located between the two dispensing tubes.

[0018] Preferably, the inlet and outlet ends of the injection pipe are respectively equipped with an inlet valve and a drain valve.

[0019] Preferably, each of the two openings of the inner chamber is provided with a sliding door, and each of the two opposite sides of the opening is provided with a limiting block for restricting the position of the closing door.

[0020] Preferably, all jackets are evenly spaced, and the open side of each jacket is integrally fixed to the outer wall of the inner chamber.

[0021] Compared with the prior art, the pulsed vacuum steam sterilizer provided by the present invention includes an inner chamber, several jackets, a liquid injection pipe, several liquid distribution pipes, and several electromagnetic induction coils.

[0022] Several jackets are wrapped around the inner chamber, and all the jackets are distributed in a linear staggered manner. Each jacket is connected to the injection pipe through a dispensing pipe. An electromagnetic induction coil is sleeved on the outer periphery of the injection pipe and the outer periphery of each dispensing pipe.

[0023] When water is injected into the distribution tubes from the injection tube, all electromagnetic induction coils are activated. The electromagnetic induction coils surrounding the injection tube preheat the liquid inside the injection tube. The preheated liquid then flows into each distribution tube, and the electromagnetic induction coils surrounding the distribution tubes continue to heat the liquid inside each distribution tube. The liquid evaporates into steam, and each distribution tube can then supply steam to the connected jackets, allowing the inner chamber to be kept warm with the help of the jackets.

[0024] In summary, the newly added electromagnetic induction coils in this invention are distributed around the outer periphery of the injection pipe and each distribution pipe, directly heating the liquid in each pipe through electromagnetic induction. This avoids excessive heat loss during liquid or steam transport, effectively improving heating efficiency. Furthermore, the integrated design of placing the electromagnetic induction coils directly outside the pipes eliminates the need for a traditional steam generator and avoids the need for excessively long pipes between the jacket and the steam generator to transport steam, simplifying the overall structure, reducing space requirements, and resulting in a more compact design. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 This is an axonometric view of a pulsed vacuum steam sterilizer provided in a specific embodiment of the present invention;

[0027] Figure 2 for Figure 1 The main view;

[0028] Figure 3 for Figure 1 Side view.

[0029] The attached figures are labeled as follows:

[0030] The inner chamber 1, the sealing door 11, the limiting block 12, the jacket 2, the injection pipe 3, the dispensing pipe 4, and the electromagnetic induction coil 5. Detailed Implementation

[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] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Please refer to Figures 1 to 3 , Figure 1 This is an axonometric view of a pulsed vacuum steam sterilizer provided in a specific embodiment of the present invention; Figure 2 for Figure 1 The main view; Figure 3 for Figure 1 Side view.

[0034] This invention discloses a pulsed vacuum steam sterilizer, which adds an electromagnetic induction coil 5 to directly heat the liquid in each pipe by electromagnetic induction, resulting in higher heating efficiency and a more compact structure.

[0035] The pulsed vacuum steam sterilizer provided by this invention includes an inner chamber 1, several jackets 2, a liquid injection pipe 3, and several dispensing pipes 4. The inner chamber 1 is hollow at the center, with a rectangular outer surface for sterilization. Several jackets 2 are arranged linearly around the outer periphery of the inner chamber 1. They not only preheat and insulate the inner chamber 1 with high-temperature steam within the jackets 2, effectively preventing condensation and improving the drying effect, but also enhance the deformation resistance of the outer wall of the inner chamber 1. All jackets 2 are evenly spaced to ensure uniform heating of the inner chamber 1. Each jacket 2 is a U-shaped structure formed by bending sheet metal. The open side of each jacket 2 is integrally fixed to the outer wall of the inner chamber 1, or it can be welded to the outer wall of the inner chamber 1. However, during welding, it is necessary to ensure good sealing between the jacket 2 and the outer wall of the inner chamber 1 to prevent steam leakage.

[0036] One end of the injection pipe 3 can be connected to an external liquid supply device for supplying liquid, such as pure water. One end of each of the distribution pipes 4 is connected to the injection pipe 3, and the other end is connected to each of the jackets 2. Liquid flowing into the injection pipe 3 can be distributed into each distribution pipe. The injection pipe 3 is arranged parallel to the centerline of the inner chamber 1, meaning it can be arranged horizontally, which also helps to stabilize the flow to some extent. Each distribution pipe 4 is perpendicularly connected to the injection pipe 3. The number of distribution pipes 4 can be adapted to the number of jackets 2 outside the inner chamber 1, and the specific number of jackets 2 can be adjusted according to the length of the inner chamber 1; no specific limitation is made here.

[0037] The aforementioned pulsed vacuum steam sterilizer also includes an electromagnetic induction coil 5 wound around the outer periphery of the injection pipe 3 and each dispensing pipe 4. When a high-frequency current is applied to the electromagnetic induction coil 5, eddy currents are generated within the injection pipe 3 and each dispensing pipe 4 according to the principle of electromagnetic induction. The liquid is heated by the thermal effect of these eddy currents. The electromagnetic induction coil 5 directly heats the liquid within the wound pipe into steam, replacing the existing method of transporting steam through pipes. This eliminates the need for installation holes for connecting pipes, resulting in higher integration of the overall structure, stronger resistance to deformation, and longer service life. For details on the structure and working principle of each electromagnetic induction coil 5, please refer to existing technologies.

[0038] When water is injected into the dispensing pipe 4 through the injection pipe 3, all electromagnetic induction coils 5 are activated. The electromagnetic induction coils 5 surrounding the injection pipe 3 preheat the liquid inside the injection pipe 3. The preheated liquid flows into each dispensing pipe 4, and the electromagnetic induction coils 5 surrounding the dispensing pipe 4 continue to heat the liquid inside each dispensing pipe 4. The liquid evaporates into steam, and each dispensing pipe 4 can then supply steam to the connected jacket 2, so that the inner chamber 1 can be kept warm by means of each jacket 2.

[0039] In summary, the newly added electromagnetic induction coils 5 in this invention are distributed around the outer periphery of the injection pipe 3 and each distribution pipe 4, directly heating the liquid in each pipe through electromagnetic induction. This avoids excessive heat loss during liquid or steam transportation and effectively improves heating efficiency. Furthermore, the integrated design of placing the electromagnetic induction coils 5 directly outside the pipes eliminates the need for a traditional steam generator and avoids the need for excessively long pipes between the jacket 2 and the steam generator to transport steam, simplifying the overall structure, reducing space requirements, and resulting in a more compact overall design.

[0040] Each jacket 2 is equipped with a temperature detection device to detect the steam temperature inside the jacket 2. The temperature detection device can be a temperature sensor, but is not limited to this. All electromagnetic induction coils 5 and all temperature detection devices are connected to a controller, so that the controller controls the power of the electromagnetic induction coil 5 wound on the liquid distribution pipe 4 connected to the jacket 2 through the temperature detection devices set on each jacket 2.

[0041] When any temperature detection device detects that the current temperature of its corresponding jacket 2 exceeds the preset range, it means that the current temperature of that jacket 2 is too high or too low. At this time, the temperature detection device of that jacket 2 sends a feedback signal to the controller. The controller adjusts the power of the electromagnetic induction coil 5 installed outside the corresponding connected distribution pipe 4, thereby automatically adjusting the steam temperature in each jacket 2, so that the current temperature of each jacket 2 is stably maintained within a certain range, ensuring that all parts of the inner chamber 1 are heated evenly. The corresponding connected distribution pipe 4 refers to the distribution pipe 4 connected to the jacket 2 with the abnormal current temperature. The preset range mentioned in this text refers to the temperature between the highest and lowest steam temperature inside the jacket 2.

[0042] Each dispensing tube 4 is equipped with a liquid level detection device to detect the liquid level height within the dispensing tube 4. The aforementioned pulsed vacuum steam sterilizer also includes a liquid level display and a liquid level alarm, all of which are connected to the controller.

[0043] Each liquid level detection device sends the detected liquid level information to the controller in real time. The controller controls the liquid level display to centrally display the liquid level information fed back by all liquid level detection devices, which facilitates real-time monitoring of the liquid level of each liquid distribution pipe 4, avoids dry burning caused by the liquid level of the liquid distribution pipe 4 being too low, and also avoids the liquid level of the liquid distribution pipe 4 being too high, which would affect the humidity of the steam.

[0044] When the liquid level detection device installed in any of the distribution pipes 4 detects that the current liquid level in the distribution pipe 4 exceeds the preset liquid level, the liquid level detection device sends a feedback signal to the controller. The controller automatically activates the liquid level alarm, reminding the relevant personnel to adjust the liquid level in the distribution pipe 4 by adding or draining liquid. The preset liquid level mentioned in this text can be either the highest liquid level or the lowest liquid level.

[0045] It should be noted that the controller should include a signal receiving unit, a signal judging unit, and a signal transmitting unit. The signal receiving unit receives electrical signals sent by detection devices such as temperature detection devices or liquid level detection devices. The signal judging unit is electrically connected to the receiving unit so that it can determine whether the signal received by the receiving unit is a trigger signal. The signal transmitting unit is electrically connected to the signal judging unit so that it can send the judgment signal generated by the signal judging unit to the electromagnetic induction coil 5 or liquid level alarm and other actuators. The specific configuration of the signal receiving unit, signal judging unit, and signal transmitting unit can refer to the prior art; in this invention, only the application scenario of the above three units has been changed, and no substantial improvement has been made. Obviously, controllers with this structure are widely used in existing automatic control equipment, such as MCUs, DSPs, or single-chip microcomputers. The key point of this invention is that the controller combines each detection device and each actuator in a pairwise correspondence.

[0046] The winding length of the electromagnetic induction coil 5 wound around each distributor tube 4 is equal to the lowest liquid level height of that distributor tube 4, effectively preventing the electromagnetic induction coil 5 from burning out of the distributor tube 4 and helping to extend the service life of the distributor tube 4. The lowest liquid level height of each distributor tube 4 can be set according to the steam demand, and is not specifically limited here.

[0047] All parts of the injection tube 3 and the dispensing tubes 4 are covered with an insulating sleeve. The electromagnetic induction coil 5 is wound around the surface of the insulating sleeve to prevent heat loss and further improve heating efficiency. Furthermore, the insulating sleeve maintains an appropriate gap between the electromagnetic induction coil 5 and the wall of the dispensing tube 4, ensuring high heating efficiency while preventing arcing between the coil and the tube, which could compromise safety. The material of the insulating sleeve can be referenced from existing technology and will not be detailed here.

[0048] Each jacket 2 is connected to the inner chamber 1 via a steam supply pipe, allowing the liquid distribution pipe 4 to simultaneously supply high-temperature steam to both jacket 2 and inner chamber 1. Each steam supply pipe is equipped with a control valve to control the on / off state of the steam supply pipe.

[0049] The electromagnetic induction coil 5 on the injection tube 3 is segmented, and any electromagnetic induction coil 5 fitted outside the injection tube 3 is located between two dispensing tubes 4 to avoid interference.

[0050] An inlet valve is provided at the inlet of the injection tube 3 to control the flow rate of liquid into the injection tube 3. A drain valve is provided at the outlet of the injection tube 3 to drain the liquid in the injection tube 3 after disinfection.

[0051] Both ends of the inner chamber 1 have slidable closing doors 11 to seal the openings. While chain drive can be used to control the raising and lowering of the closing doors 11 relative to the openings of the inner chamber 1, this is not a limitation. Limiting blocks 12 are located on opposite sides of the openings. When the closing doors 11 block the openings of the inner chamber 1, the limiting blocks 12 abut against the closing doors 11, effectively restricting their position and ensuring that the closing doors 11 remain abut against the edge of the openings during disinfection of the inner chamber 1. Specifically, the limiting blocks 12 can be L-shaped, with one end detachably fixed to the outer wall of the inner chamber 1 or the sleeve 2 by screws, and the other end abutting against the closing doors 11. The structure and working principle of the closing doors 11 can be found in existing technology and will not be detailed here.

[0052] The pulsed vacuum steam sterilizer provided by the present invention has been described in detail above. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A pulsed vacuum steam sterilizer, characterized in that, include: A horizontally arranged interior room (1); Several jackets (2) are wrapped around the outer periphery of the inner chamber (1) and distributed at equal intervals in a linear manner; Injection tube (3) for supplying liquid; Several dispensing tubes (4) with one end connected to the injection tube (3) and the other end connected to each of the jackets (2) respectively. An electromagnetic induction coil (5) is wound around the outer periphery of the injection pipe (3) and each of the distribution pipes (4) and used to heat the liquid into steam. In the vertical direction, the injection tube (3), the dispensing tube (4), and the jacket (2) are arranged sequentially from bottom to top; The inner chamber (1) is hollow in the center and its outer surface is rectangular; each of the jackets (2) is a U-shaped structure formed by bending, and the open side of each jacket (2) is integrally fixed to the outer wall of the inner chamber (1); the injection pipe (3) is arranged along the direction parallel to the center line of the inner chamber (1), and each of the dispensing pipes (4) is perpendicularly connected to the injection pipe (3).

2. The pulsed vacuum steam sterilizer according to claim 1, characterized in that, Each of the jackets (2) is equipped with a temperature detection device, and all the electromagnetic induction coils (5) and all the temperature detection devices are connected to the controller. When any of the temperature detection devices detects that the current temperature of the jacket (2) it is in exceeds the preset range, the controller is used to adjust the power of the electromagnetic induction coil (5) provided outside the corresponding liquid distribution pipe (4).

3. The pulsed vacuum steam sterilizer according to claim 2, characterized in that, Each of the liquid distribution tubes (4) is equipped with a liquid level detection device connected to the controller, and also includes a liquid level display and a liquid level alarm connected to the controller; the controller is used to control the liquid level display to display all the liquid level information fed back by the liquid level detection device, and is also used to activate the liquid level alarm when the current liquid level of any of the liquid distribution tubes (4) exceeds the preset liquid level.

4. The pulsed vacuum steam sterilizer according to claim 3, characterized in that, The length of the electromagnetic induction coil (5) wound around each of the liquid distribution tubes (4) is equal to the height of its lowest liquid level.

5. The pulsed vacuum steam sterilizer according to any one of claims 1 to 4, characterized in that, The injection tube (3) and all the dispensing tubes (4) are covered with heat-insulating sleeves for the electromagnetic induction coil (5) to be wound.

6. The pulsed vacuum steam sterilizer according to any one of claims 1 to 4, characterized in that, Each of the jackets (2) is connected to the inner chamber (1) via a steam pipe, and each steam pipe is equipped with a control valve.

7. The pulsed vacuum steam sterilizer according to any one of claims 1 to 4, characterized in that, Any of the electromagnetic induction coils (5) fitted outside the injection tube (3) is located between the two dispensing tubes (4).

8. The pulsed vacuum steam sterilizer according to any one of claims 1 to 4, characterized in that, The inlet and outlet ends of the injection pipe (3) are respectively equipped with an inlet valve and a drain valve.

9. The pulsed vacuum steam sterilizer according to any one of claims 1 to 4, characterized in that, Both ends of the inner chamber (1) are provided with sliding closed doors (11), and each of the two opposite sides of the opening is provided with a limiting block (12) for restricting the position of the closed door (11).

10. The pulsed vacuum steam sterilizer according to any one of claims 1 to 4, characterized in that, All the jackets (2) are evenly spaced, and the open side of each jacket (2) is integrally fixed to the outer wall of the inner chamber (1).

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