Sterilizer

Abstract

The utility model relates to a sterilizer which comprises an evaporator communicated with a sterilization chamber through a steam inlet pipeline, the evaporator is further communicated with a water adding pump, the sterilization chamber is communicated with a vacuum pump through a vacuum pipeline, the sterilization chamber is further connected with a slow exhaust valve and a quick exhaust valve, and the vacuum pipeline and the steam inlet pipeline are respectively provided with a vacuum valve and a steam inlet valve. According to the utility model, cold air in the sterilization chamber is discharged as much as possible through three processes of steam feeding and evacuation, so that steam in the sterilization chamber is saturated, when steam does not need to be fed into the sterilization chamber, the steam evaporator starts to heat, the internal pressure of the steam evaporator is kept at 0.6 Mpa all the time, and meanwhile, water is supplemented to a high water level so as to meet the requirements of cold air discharging and temperature rising of the sterilization chamber; the high pressure difference ensures the saturation degree and the steam inlet speed of the steam, in the sterilization process, the slow exhaust valve needs to be intermittently opened to discharge condensate water generated in the sterilization chamber, and the sterilization device not only ensures the sterilization quality, but also saves the sterilization process time, and avoids the wet package phenomenon of sterilized articles.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to the technical field of mechanical parts, and specifically refers to a sterilizer. Background Art

[0002] In the prior art, when the sterilization chamber needs to be replenished with steam during the sterilization program of the sterilizer, the water level in the evaporator reaches the lower limit and the water replenishment pipeline needs to be replenished with water, which causes the temperature in the evaporator to drop. As a result, the pressure difference between the evaporator and the sterilization chamber is too small, and not enough saturated steam can enter the sterilization chamber from the steam generator. The pressure and temperature in the sterilization chamber drop instantly, causing the objects to get wet. Utility Model Content

[0003] The utility model aims at the deficiencies of the prior art and provides a sterilizer, which ensures that enough saturated steam enters the sterilization chamber from the evaporator to avoid the phenomenon of wet packing of articles.

[0004] The utility model is realized through the following technical scheme: a sterilizer, comprising an evaporator connected to a sterilization chamber through a steam inlet pipeline, the evaporator is also connected to a water adding pump, the sterilization chamber is connected to a vacuum pump through a vacuum pipeline, the sterilization chamber is also connected to a slow exhaust valve and a fast exhaust valve, and a vacuum valve and a steam inlet valve are respectively provided on the vacuum pipeline and the steam inlet pipeline.

[0005] When the new type is in use, the sterilizer is powered on and the water level in the evaporator is at a low water level. At this time, the water pump starts to run, and the water pump replenishes the evaporator with water to a high water level through the water replenishment pipeline. The evaporator starts to heat until the pressure rises to 0.6Mpa. Since the steam pressure required for sterilization in the sterilization chamber is 0.21Mpa, there is a pressure difference of 0.39Mpa between the evaporator and the sterilization chamber at this time. Steam enters the sterilization chamber through the steam inlet pipeline. Due to the large pressure difference, the steam inlet speed is very fast, thereby saving heating time;

[0006] When the pressure in the sterilization chamber rises to 80kpa, stop the steam supply, and open the slow exhaust valve and the fast exhaust valve 1 at the same time to start pressure relief. While relieving pressure, remove the cold air in the sterilization chamber. When the pressure drops to 5kpa, the slow exhaust valve and the fast exhaust valve remain open, and the vacuum pump starts to work, and the pressure in the sterilization chamber is evacuated to -80kpa. Repeat the above steam supply and evacuation process three times to remove as much cold air as possible in the sterilization chamber to saturate the steam in the sterilization chamber. When there is no need to supply steam to the sterilization chamber during the above process, the steam evaporator starts heating to keep its internal pressure at 0 .6Mpa, and at the same time, water is added to a high water level to provide for the sterilization chamber to exhaust cold air and heat up. After the sterilization chamber rises to the sterilization temperature of 134°C, in order to maintain a large pressure difference between the evaporator and the sterilization chamber, a small amount of cold water is added at this time. The addition of a small amount of cold water will not have much impact on the internal pressure and temperature of the evaporator. The higher pressure difference ensures the saturation of the steam and the steam inlet speed. During the sterilization process, it is necessary to intermittently open the slow exhaust valve to remove the condensed water generated in the sterilization chamber. The utility model not only ensures the sterilization quality, but also saves the sterilization process time and avoids the wet bag phenomenon of sterilized items.

[0007] Preferably, the slow exhaust valve and the fast exhaust valve are respectively arranged on the slow exhaust pipe and the fast exhaust pipe, and the slow exhaust pipe and the fast exhaust pipe are both connected to the sterilization chamber.

[0008] In this preferred solution, the slow exhaust pipe and the fast exhaust pipe are separately arranged, so that during the sterilization process, the slow exhaust valve can be opened intermittently to remove the condensed water generated in the sterilization chamber.

[0009] Preferably, a joint connected to the steam inlet pipeline is provided on the top surface of the sterilization chamber. In this preferred solution, the joint is arranged on the top surface, so that steam can flow from top to bottom.

[0010] Preferably, the evaporator is also connected with a pressure relief valve and a pressure gauge. This preferred solution facilitates understanding of the pressure in the evaporator and also facilitates pressure relief of the evaporator through the provision of the pressure relief valve and the pressure gauge.

[0011] Preferably, the vacuum pipeline includes a water storage tank, a first suction pipe and a second suction pipe located above the water tank and connected to the water tank, the other end of the first suction pipe is connected to the vacuum pump, the other end of the second suction pipe is connected to the sterilization chamber, and the vacuum valve is arranged on the first suction pipe.

[0012] This preferred solution facilitates the collection of condensed water extracted during vacuuming by providing a water storage tank.

[0013] Preferably, the two ends of the sterilization chamber are detachably connected to the bracket. The arrangement of this preferred solution facilitates the assembly and disassembly of the sterilization chamber, thereby facilitating the transportation of the sterilization chamber.

[0014] Preferably, a frame is further provided below the sterilization chamber, the frame comprising a U-shaped frame whose top surface is fixed to the bottom surface of the sterilization chamber, and supporting feet arranged on the frame, and the evaporator, water pump, and vacuum pump are all located on the bottom plate of the frame. This preferred solution facilitates the support and installation of the evaporator, water pump, and vacuum pump through the arrangement of the frame.

[0015] Preferably, the screw of the support foot is threadedly connected to the frame. The arrangement of this preferred solution facilitates the support foot to be supported on the ground.

[0016] The beneficial effects of the utility model are as follows: through the steam intake and evacuation processes three times, the cold air in the sterilization chamber is discharged as much as possible, so that the steam in the sterilization chamber is saturated. When there is no need to enter the sterilization chamber with steam in the above process, the steam evaporator starts heating to keep its internal pressure at 0.6Mpa at all times, and at the same time, water is replenished to a high water level to meet the needs of exhausting cold air and heating the sterilization chamber. After the sterilization chamber is raised to the sterilization temperature of 134°C, in order to maintain a large pressure difference between the evaporator and the sterilization chamber, a small amount of cold water is replenished at this time. The replenishment of a small amount of cold water will not have much effect on the internal pressure and temperature of the evaporator. The higher pressure difference ensures the saturation of the steam and the steam intake speed. During the sterilization process, it is necessary to intermittently open the slow exhaust valve to remove the condensed water generated in the sterilization chamber. The utility model not only ensures the sterilization quality, but also saves the sterilization process time and avoids the wet bag phenomenon of sterilized items. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 It is a rear view schematic diagram of the structure of the utility model;

[0019] As shown in the figure:

[0020] 1. Sterilization chamber, 2. Frame, 3. Evaporator, 4. Steam inlet pipeline, 5. Water supply pipeline, 6. Controller, 7. Vacuum pump, 8. Water supply pump, 9. Water supply valve, 10. Slow exhaust valve, 11. Quick exhaust valve. DETAILED DESCRIPTION

[0021] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0022] See attached Figure 1-2 The utility model provides a sterilizer, including a bracket, which includes two side panels arranged opposite to each other, a sterilization chamber 1 is arranged between the two side panels, two sides of the sterilization chamber 1 are bolted to the two side panels, and a frame 2 is also arranged below the sterilization chamber 1, the frame 2 includes a U-shaped frame whose top surface is fixed to the bottom surface of the sterilization chamber 1, and supporting feet arranged on the frame, and the screws of the supporting feet are threadedly connected to the frame.

[0023] The bottom plate of the frame is installed with an evaporator 3, a water pump 8, and a vacuum pump 7. The evaporator 3 is connected to the sterilization chamber 1 through a steam inlet pipeline 4. The evaporator 3 is also connected to the water pump 8 through a water supply pipeline 5. A water supply valve 9 is provided on the water supply pipeline 5. The evaporator 3 is also connected to a pressure relief valve and a pressure gauge.

[0024] The sterilization chamber 1 is connected to a vacuum pump 7 through a vacuum pipeline, and is also connected to a slow exhaust pipe and a fast exhaust pipe, which are respectively provided with a slow exhaust valve 10 and a fast exhaust valve 11, both of which are one-way valves, and are respectively provided with a vacuum valve and a steam inlet valve on the vacuum pipeline and the steam inlet pipeline 4. A joint connected to the steam inlet pipeline 4 is provided on the top surface of the sterilization chamber 1.

[0025] The vacuum pipeline includes a water storage tank, a first suction pipe and a second suction pipe located above the water storage tank and connected to the water storage tank, the other end of the first suction pipe is connected to the vacuum pump 7, the other end of the second suction pipe is connected to the sterilization chamber 1, and the vacuum valve is arranged on the first suction pipe.

[0026] The evaporator 3, the sterilization chamber 1, the water pump 8, the vacuum pump 7, the vacuum valve, the steam inlet valve, the slow exhaust valve 10 and the fast exhaust valve 11, the pressure relief valve, the pressure gauge, and the water valve 9 are all electrically connected to the controller 6, and the controller 6 is the prior art.

[0027] When the utility model is in use, the sterilizer is powered on and the water level of the evaporator 3 is at a low water level stage. At this time, the water pump 8 starts to run, and the water pump 8 replenishes the evaporator 3 with water to a high water level through the water replenishment pipeline 5. The evaporator 3 starts to heat until the pressure rises to 0.6Mpa. Since the steam pressure required for sterilization in the sterilization chamber 1 is 0.21Mpa, there is a pressure difference of 0.39Mpa between the evaporator 3 and the sterilization chamber 1 at this time. The steam enters the sterilization chamber 1 through the steam inlet pipeline 4. Due to the large pressure difference, the steam inlet speed is very fast, thereby saving the heating time.

[0028] When the pressure in the sterilization chamber 1 rises to 80 kpa, stop the steam intake, and open the slow exhaust valve 10 and the fast exhaust valve 111 to start pressure relief. While releasing the pressure, remove the cold air in the sterilization chamber 1. When the pressure drops to 5 kpa, the slow exhaust valve 10 and the fast exhaust valve 11 remain open, and the vacuum pump 7 starts to operate to evacuate the pressure in the sterilization chamber 1 to -80 kpa. Repeat the steam intake and evacuation process three times to remove as much cold air as possible in the sterilization chamber 1, so that the steam in the sterilization chamber 1 is saturated. When there is no need to enter steam in the sterilization chamber 1 during the above process, the steam evaporator 3 starts heating to keep the internal pressure at 0.6 Mpa. At the same time, water is added to a high water level to meet the needs of exhausting cold air and heating the sterilization chamber 1.

[0029] After the sterilization temperature of the sterilization chamber 1 rises to 134°C, in order to maintain a large pressure difference between the evaporator 3 and the sterilization chamber 1, a small amount of cold water is used as the water supplement. The addition of a small amount of cold water will not have much impact on the internal pressure and temperature of the evaporator 3. The higher pressure difference ensures the saturation of the steam and the steam inlet speed. During the sterilization process, it is necessary to intermittently open the slow exhaust valve 10 to remove the condensed water generated in the sterilization chamber 1. This solution not only ensures the sterilization quality, but also saves the sterilization process time and avoids the occurrence of wet packs of sterilized items.

[0030] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A sterilizer, comprising an evaporator (3) connected to a sterilization chamber (1) via a steam inlet pipeline (4), characterized in that: The evaporator (3) is also connected to a water adding pump (8), the sterilization chamber (1) is connected to a vacuum pump (7) via a vacuum pipeline, the sterilization chamber (1) is also connected to a slow exhaust valve (10) and a fast exhaust valve (11), and the vacuum pipeline and the steam inlet pipeline (4) are respectively provided with a vacuum valve and a steam inlet valve.

2. The sterilizer according to claim 1, characterized in that: The slow exhaust valve (10) and the fast exhaust valve (11) are respectively arranged on the slow exhaust pipe and the fast exhaust pipe, and both the slow exhaust pipe and the fast exhaust pipe are connected to the sterilization chamber (1).

3. The sterilizer according to claim 1, characterized in that: A joint connected to the steam inlet pipeline (4) is provided on the top surface of the sterilization chamber (1).

4. The sterilizer according to claim 1, characterized in that: The evaporator (3) is also connected to a pressure relief valve and a pressure gauge.

5. The sterilizer according to claim 1, characterized in that: The vacuum pipeline comprises a water storage tank, a first suction pipe and a second suction pipe located above the water storage tank and connected to the water storage tank, the other end of the first suction pipe is connected to a vacuum pump (7), the other end of the second suction pipe is connected to a sterilization chamber (1), and the vacuum valve is arranged on the first suction pipe.

6. The sterilizer according to claim 1, characterized in that: The two ends of the sterilization chamber (1) are detachably connected to the bracket.

7. The sterilizer according to claim 1, characterized in that: A frame (2) is also provided below the sterilization chamber (1), the frame (2) comprising a U-shaped frame whose top surface is fixedly connected to the bottom surface of the sterilization chamber (1), and supporting legs arranged on the frame. The evaporator (3), water pump (8), and vacuum pump (7) are all located on the bottom plate of the frame.

8. The sterilizer according to claim 7, characterized in that: The screw rod of the supporting foot is threadedly connected to the frame.

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