Vaporizer and sterilizer cabinet system

Abstract

The utility model provides a kind of gasifier and sterilization cabinet system, the gasifier includes liquid storage bottle, first flow pump, first water tank, first heating device, vaporization pipe, second water tank, second heating device, second flow pump, heating pipe, circulating inlet water pipe and circulating backwater pipe, first heating device and second heating device are heated respectively to first water tank and second water tank, vaporization pipe first end is arranged in first water tank and is communicated with liquid storage bottle by liquid outlet pipe, and the second end of vaporization pipe is provided with use connecting end, heating pipe is sleeved between the both ends of vaporization pipe, and heating passage is formed between vaporization pipe and heating pipe, and the both ends of heating passage are communicated with second water tank by circulating inlet water pipe and circulating backwater pipe respectively, and first flow pump and second flow pump are connected on liquid outlet pipe and circulating inlet water pipe respectively;The sterilization cabinet system includes sterilization cabinet and gasifier.The utility model can avoid that gas after vaporization is condensed into liquid and improve liquid gas conversion rate.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a vaporizer and sterilizer system. Background Technology

[0002] Ethylene oxide (EO) sterilization is a low-temperature sterilization technology widely used in medical devices, pharmaceutical packaging, and the food industry. Its core principle lies in effectively introducing ethylene oxide gas into the sterilization chamber, ensuring both sterilization effectiveness and safety.

[0003] Some large industrial sterilizers typically use a vaporizer to vaporize liquid ethylene oxide into gaseous ethylene oxide, which is then injected into the sterilization chamber. However, existing vaporizers suffer from insufficient conversion rates, resulting in the presence of small amounts of ethylene oxide droplets in the gaseous ethylene oxide. Furthermore, the gaseous ethylene oxide must travel through relatively long pipelines to enter the sterilization chamber, during which its temperature drops, causing some to condense back into liquid, thus affecting sterilization effectiveness and wasting ethylene oxide. Moreover, existing vaporizers generally suffer from complex structures and high costs. Utility Model Content

[0004] The primary objective of this invention is to provide a vaporizer that can prevent vaporized gas from condensing into liquid and improve the liquid-gas conversion rate.

[0005] The second objective of this invention is to provide a sterilization cabinet system that includes the aforementioned vaporizer.

[0006] To achieve the aforementioned first objective, the vaporizer provided by this utility model includes a storage bottle, a liquid outlet pipe, a first flow pump, a first water tank, a first heating device, and a vaporization pipe. The first heating device is used to heat the first water tank. The first end of the vaporization pipe is located inside the first water tank. The storage bottle is connected to the first end of the vaporization pipe through the liquid outlet pipe. The first flow pump is connected to the liquid outlet pipe. The second end of the vaporization pipe is provided with a usage connection end. The vaporizer also includes a second water tank, a second heating device, a second flow pump, a heating pipe, a circulating water inlet pipe, and a circulating water return pipe. The second heating device is used to heat the second water tank. The heating pipe is sleeved between the two ends of the vaporization pipe and located close to the usage connection end. An annular heating channel is formed between the vaporization pipe and the heating pipe. The two ends of the heating channel are connected to the second water tank through the circulating water inlet pipe and the circulating water return pipe, respectively. The second flow pump is connected to the circulating water inlet pipe. The temperature inside the heating channel is higher than or equal to the temperature inside the vaporization pipe.

[0007] As can be seen from the above scheme, the above settings allow liquid ethylene oxide to be vaporized through a first heating process to obtain gaseous ethylene oxide, which is then transported along the vaporization pipe to the usage connection end. Before reaching the usage connection end, it needs to undergo a second heating process. This helps to prevent the gaseous ethylene oxide from condensing into droplets due to temperature drop during transport, and also vaporizes any incompletely vaporized ethylene oxide droplets from the first heating process, ensuring that the ethylene oxide enters the usage connection end in gaseous form, thus improving the liquid-to-gas conversion rate. Furthermore, the inclusion of a first flow pump helps to ensure precise control of the ethylene oxide dosage. This invention also has the advantages of simple structure and low cost.

[0008] A further proposed solution is to heat the second water tank at a temperature higher than or equal to that of the first water tank.

[0009] A further option is that the first end of the vaporization pipe extends in a meandering manner within the first water tank; or, the first end of the vaporization pipe is provided with at least two branches, all of which are connected in parallel, and each branch extends in a meandering manner within the first water tank.

[0010] As can be seen from the above scheme, the above settings help to increase the residence time of liquid ethylene oxide in the first water tank, ensuring that the liquid ethylene oxide has sufficient time to be heated and vaporized in the first water tank, which is conducive to further improving the conversion rate.

[0011] A further embodiment is that the vaporization pipe includes a main pipe, a connecting pipe, two branch pipes, and at least two inlet pipes. One end of the main pipe is connected to the first flow pump, and the two branch pipes are connected in parallel at the other end of the main pipe. The first end of each of the two branch pipes is connected to the main pipe, and the second end of each of the two branch pipes is connected to both ends of the connecting pipe. All inlet pipes are arranged on the connecting pipe and connected to the connecting pipe.

[0012] As can be seen from the above scheme, with the above settings, gaseous ethylene oxide can simultaneously enter the connecting pipe from two branch pipes, and then enter the sterilization chamber from different inlet pipes. The different inlet pipes are set in different parts of the sterilization chamber, which helps to improve the uniformity of gaseous ethylene oxide in the sterilization chamber and ensure uniform sterilization.

[0013] A further proposed solution is to have the heating tube sleeved outside the connecting tube, with the first end of the inlet tube connected to the connecting tube, the second end of the inlet tube extending outside the heating tube, and a solenoid valve installed on the inlet tube.

[0014] As can be seen from the above scheme, the above settings facilitate the introduction of sterilizing gas at the appropriate time during the sterilization process.

[0015] A further option is to connect a third flow pump to the vaporization pipe, which is located at the point where the vaporization pipe extends beyond the first water tank.

[0016] As can be seen from the above scheme, the above settings facilitate further precise control of the amount of gaseous ethylene oxide entering the sterilization chamber.

[0017] A further option is to set the number of first heating devices to two or more, with all first heating devices evenly arranged inside the first water tank.

[0018] As can be seen from the above scheme, the above settings ensure that the liquid in the first water tank is heated evenly and continuously maintained within an appropriate temperature range.

[0019] A further option is to install an insulation layer around the vaporization pipe, the circulating water inlet pipe, and / or the circulating water return pipe.

[0020] As can be seen from the above scheme, the above settings help prevent the temperature of the vaporization tube from dropping too quickly, thus avoiding the condensation of gaseous ethylene oxide into a liquid state; they also help prevent the temperature of the circulating water from dropping too quickly, thus affecting the temperature of the water returning to the second water tank.

[0021] A further proposed solution is to place the outlet of the circulating return water pipe in the second water tank below the inlet of the circulating inlet water pipe, with the inlet of the circulating inlet water pipe positioned close to the second heating device.

[0022] As can be seen from the above scheme, the above settings prevent the water that has just returned from being sent into the circulating water inlet pipe without being heated.

[0023] To achieve the second objective mentioned above, this utility model provides a sterilization cabinet system, including a sterilization cabinet and the aforementioned vaporizer, wherein the use connection end of the vaporization pipe is connected to the interior of the sterilization cabinet. Attached Figure Description

[0024] Figure 1 This is a structural diagram of an embodiment of the vaporizer of this utility model applied to a sterilization cabinet.

[0025] Figure 2 This is a structural diagram of an embodiment of the vaporizer of this utility model, omitting some of the pipes.

[0026] Figure 3 This is a structural diagram of the first and second water tanks in an embodiment of the gasifier of this utility model.

[0027] Figure 4 This is a structural diagram of the first end of the vaporization tube in an embodiment of the vaporizer of this utility model.

[0028] Figure 5 This is a cross-sectional view of an embodiment of the vaporizer of this utility model applied to a sterilization cabinet.

[0029] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0031] Vaporizer Example:

[0032] See Figures 1 to 3 The vaporizer provided in this embodiment includes a control module (not shown in the figure), a liquid storage bottle 1, a liquid outlet pipe 11, a first flow pump 2, a first water tank 3, a first heating device 4, a vaporization pipe 5, a second water tank 6, a second heating device 7, a second flow pump 8, a heating pipe 9, a circulating water inlet pipe 10, a circulating water return pipe 20, and a support 30. The control module is electrically connected to the first flow pump 2, the first heating device 4, the second heating device 7, and the second flow pump 8, respectively.

[0033] The first water tank 3 and the second water tank 6 are mounted on the same support 30. The first water tank 3 and the second water tank 6 may or may not be connected. The first heating device 4 is used to heat the first water tank 3, and the second heating device 7 is used to heat the second water tank 6. Both the first water tank 3 and the second water tank 6 are surrounded by insulation material. The heating temperature of the second water tank 6 is higher than or equal to the heating temperature of the first water tank 3.

[0034] The outlet of the storage bottle 1 is connected to an outlet pipe 11, which is connected to a first flow pump 2 and a check valve. The first flow pump 2 is used to quantitatively deliver liquid ethylene oxide to the outlet pipe 11, achieving precise control of the dosage. When the valve of the storage bottle 1 is opened, the liquid ethylene oxide, under the pressure of the storage bottle 1, pushes open the check valve. The check valve prevents the liquid ethylene oxide in the outlet pipe 11 from leaking from the interface when the vaporization pipe 5 is disconnected from the storage bottle 1.

[0035] The first end of the vaporization tube 5 is located inside the first water tank 3 and is in full contact with the hot water inside the first water tank 3. The heating effect of the hot water vaporizes the liquid ethylene oxide in the first end of the vaporization tube 5 into gaseous ethylene oxide. At this time, some liquid ethylene oxide droplets are mixed in with the gaseous ethylene oxide, and these droplets move with the gaseous ethylene oxide towards the second end of the vaporization tube 5. The storage bottle 1 is connected to the first end of the vaporization tube 5 through the outlet pipe 11. The second end of the vaporization tube 5 is provided with at least one usable connection end, which is used to communicate with the interior of the sterilization chamber.

[0036] The heating element 9 is fitted between the two ends of the vaporization tube 5 and positioned close to the connection end, forming an annular heating channel 91 between the vaporization tube 5 and the heating element 9. The two ends of the heating channel 91 are connected to the second water tank 6 via a circulating water inlet pipe 10 and a circulating water return pipe 20, respectively. A second flow pump 8 is connected to the circulating water inlet pipe 10 and is used to quantitatively deliver hot water from the second water tank 6 to the circulating water inlet pipe 10.

[0037] The temperature within the heating channel 91 is higher than or equal to the temperature within the vaporization tube 5. Preferably, the temperature within the heating channel 91 is higher than the temperature within the vaporization tube 5, ensuring that the liquid ethylene oxide droplets within the vaporization tube 5 can vaporize under the heating effect of the heating channel 91, thus guaranteeing that all ethylene oxide entering the sterilization chamber is gaseous ethylene oxide. Compared to existing technologies, in this embodiment, the liquid ethylene oxide undergoes two rounds of double heating, which helps improve the liquid-to-gas conversion rate, ensures sterilization effectiveness, and reduces unnecessary loss of ethylene oxide.

[0038] In one embodiment, the first end of the vaporization tube extends in a meandering manner within the first water tank, allowing the first end of the vaporization tube to fully contact the hot water in the first water tank and prolonging the heating time of the liquid ethylene oxide, thereby improving the liquid-to-gas conversion rate.

[0039] In another embodiment, such as Figures 2 to 4 As shown, the first end of the vaporization pipe 5 is provided with at least two branches 51, all branches 51 are arranged in parallel, and each branch 51 extends in a meandering manner within the first water tank 3. In this embodiment, two branches 51 are used as an example, and each branch 51 extends upward in an "S"-shaped curve. The first ends of each of the two branches 51 are connected to the first flow pump 2, and the second ends of the two branches 51 merge together.

[0040] Combination Figure 1 and Figure 4 The vaporization pipe 5 also includes a main pipe 52, a connecting pipe 53, two branch pipes 54 and at least two inlet pipes 55. In this embodiment, three inlet pipes 55 are used as an example.

[0041] The first end of the main pipe 52 is connected to the first flow pump 2. Specifically, the first end of the main pipe 52 is connected to the second ends of each of the two branches 51. Two branch pipes 54 are connected in parallel to the second end of the main pipe 52. The first ends of each branch pipe 54 are connected to the second end of the main pipe 52, and the second ends of each branch pipe 54 are connected to both ends of the connecting pipe 53, which extends along the length of the sterilizer 40. Three inlet pipes 55 are arranged on the connecting pipe 53, and are spaced apart along the length of the sterilizer 40. The two ends of the inlet pipes 55 are connected to the connecting pipe 53 and the interior of the sterilizer 40, respectively. In this embodiment, the inlet pipes 55 are the connection ends.

[0042] See Figure 5 and Figure 6 and combined Figure 1 The heating tube 9 is sleeved on the outside of the connecting pipe 53. A sealing structure is provided between the end of the heating tube 9 and the connecting pipe 53 to seal both ends of the heating channel 91 and prevent hot water leakage. The circulating water inlet pipe 10 and the circulating water return pipe 20 are both connected between the two ends of the heating tube 9, preferably located close to the ends of the heating tube 9.

[0043] The first end of the inlet pipe 55 is connected to the connecting pipe 53, and the second end of the inlet pipe 55 extends out of the heating pipe 9 and into the interior of the sterilizer 40. A solenoid valve 56 is installed on the inlet pipe 55. The solenoid valve 56 is electrically connected to the control module and is used to open at an appropriate time during the sterilization process to add the vaporized gaseous ethylene oxide into the sterilizer 40.

[0044] To further precisely control the dosage of gaseous ethylene oxide, this embodiment also includes a third flow pump 50 connected to the vaporization pipe 5. The third flow pump 50 is located at the part of the vaporization pipe 5 that extends beyond the first water tank 3, and is electrically connected to the control module.

[0045] The flow pump in this embodiment refers to a mechanical device capable of transferring the mechanical energy or other energy source from a prime mover to a fluid to achieve fluid transport. The main function of a flow pump is to pump a certain amount of liquid or gas per unit time.

[0046] exist Figure 3 In this embodiment, the number of first heating devices 4 is set to two or more, and all first heating devices 4 are evenly arranged in the first water tank 3. This embodiment takes two first heating devices 4 as an example, and the two first heating devices 4 are respectively set close to the two branches 51.

[0047] In this embodiment, a first heat insulation layer (not shown in the figure) is provided on the outer periphery of the part of the vaporization pipe 5 that extends out of the first water tank 3. This layer is used to keep the vaporization pipe warm before it enters the sterilization cabinet 40, so as to prevent the gaseous ethylene oxide from cooling down too low due to the long pipe and condensing into a liquid state. This helps to ensure the stability of the sterilization process.

[0048] This embodiment uses ethylene oxide as the sterilization medium. In other embodiments, other sterilization media with lower boiling points may also be used, and there are no restrictions here.

[0049] A second insulation layer (not shown in the figure) is provided on the outer periphery of the circulating water inlet pipe 10 and / or the circulating water return pipe 20. This helps to prevent the circulating water from cooling down and affecting the heating and insulation effect of the heating pipe 9. It also reduces the temperature loss of the circulating water and reduces the energy consumption of the second heating device 7.

[0050] Inside the second water tank 6, the outlet of the circulating return water pipe 20 is lower than the inlet of the circulating inlet water pipe 10. The inlet of the circulating inlet water pipe 10 is located close to the second heating device 7 to prevent the freshly returned water from being transported to the circulating inlet water pipe 10 before being heated, and to prevent the temperature of the circulating water in the heating pipe 9 from being below standard.

[0051] Sterilization cabinet 40 system:

[0052] See Figures 1 to 3The sterilization cabinet 40 system provided in this embodiment includes a sterilization cabinet 40 and the aforementioned vaporizer. The sterilization cabinet 40 has a closed sterilization chamber, and the vaporizer is located on the outside of the sterilization cabinet 40. The vaporizer can be located close to the sterilization cabinet 40 or far away from the sterilization cabinet 40; this embodiment does not impose any restrictions.

[0053] The vaporization pipe 5 is connected to the interior of the sterilizer 40, meaning that the three inlet pipes 55 are arranged at intervals along the length of the sterilizer 40. The inlet pipes 55 can be installed on the top wall, side wall, or bottom wall of the sterilizer 40. In this embodiment, they are preferably installed in the middle of the top wall.

[0054] In summary, this invention, through the aforementioned configuration, allows liquid ethylene oxide to be vaporized through a first heating process to obtain gaseous ethylene oxide, which is then transported along the vaporization pipe 5 to the usage connection end. Before reaching the usage connection end, it undergoes a second heating process. This serves two purposes: firstly, it helps prevent the gaseous ethylene oxide from condensing into droplets due to temperature drop during transport; secondly, it vaporizes any incompletely vaporized ethylene oxide droplets from the first heating process, ensuring that the ethylene oxide enters the usage connection end in gaseous form, thus improving the liquid-to-gas conversion rate. Furthermore, the inclusion of a flow pump helps ensure precise control of the ethylene oxide dosage. This invention also boasts advantages such as simple structure and low cost.

[0055] Finally, it should be emphasized that the above are only preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vaporizer, comprising a storage bottle, a discharge pipe, a first flow pump, a first water tank, a first heating device, and a vaporization pipe, wherein the first heating device is used to heat the first water tank, a first end of the vaporization pipe is disposed in the first water tank, the storage bottle is connected to the first end of the vaporization pipe through the discharge pipe, the first flow pump is connected to the discharge pipe, and a second end of the vaporization pipe is provided with a service connection end, characterized in that: The vaporizer also includes a second water tank, a second heating device, a second flow pump, a heating tube, a circulating water inlet pipe, and a circulating water return pipe. The second heating device is used to heat the second water tank. The heating tube is sleeved between the two ends of the vaporization tube and is located close to the use connection end. An annular heating channel is formed between the vaporization tube and the heating tube. The two ends of the heating channel are respectively connected to the second water tank through the circulating water inlet pipe and the circulating water return pipe. The second flow pump is connected to the circulating water inlet pipe. The temperature in the heating channel is higher than or equal to the temperature in the vaporization tube.

2. The vaporizer according to claim 1, characterized in that: The heating temperature of the second water tank is higher than or equal to the heating temperature of the first water tank.

3. The vaporizer according to claim 1, characterized in that: The first end of the vaporization tube extends in a meandering manner within the first water tank; Alternatively, the first end of the vaporization pipe is provided with at least two branches, all of which are arranged in parallel, and each of the branches extends in a meandering manner within the first water tank.

4. The vaporizer according to claim 1, characterized in that: The vaporization pipe includes a main pipe, a connecting pipe, two branch pipes, and at least two inlet pipes. One end of the main pipe is connected to the first flow pump. The two branch pipes are connected in parallel at the other end of the main pipe. The first end of each of the two branch pipes is connected to the main pipe. The second end of each of the two branch pipes is connected to both ends of the connecting pipe. All the inlet pipes are arranged on the connecting pipe and connected to the connecting pipe.

5. The vaporizer according to claim 4, characterized in that: The heating tube is sleeved on the outside of the connecting tube. The first end of the inlet tube is connected to the connecting tube, and the second end of the inlet tube extends out of the outside of the heating tube. A solenoid valve is provided on the inlet tube.

6. The vaporizer according to claim 1, characterized in that: A third flow pump is also connected to the vaporization pipe, and the third flow pump is located at the part of the vaporization pipe that extends beyond the first water tank.

7. The vaporizer according to claim 1, characterized in that: The number of the first heating devices is set to two or more, and all the first heating devices are evenly arranged in the first water tank.

8. The vaporizer according to claim 1, characterized in that: The outer periphery of the vaporization pipe, the circulating water inlet pipe and / or the circulating water return pipe is provided with a heat insulation layer.

9. The vaporizer according to claim 1, characterized in that: Inside the second water tank, the outlet of the circulating return water pipe is lower than the inlet of the circulating inlet water pipe, and the inlet of the circulating inlet water pipe is located close to the second heating device.

10. A sterilization cabinet system, characterized in that, It includes a sterilizer and a vaporizer as described in any one of claims 1 to 9, wherein the use connection end of the vaporization pipe is connected to the interior of the sterilizer.

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