CN109125750B

CN109125750B - Steam sterilizer

Info

Publication number: CN109125750B
Application number: CN201811233975.3A
Authority: CN
Inventors: 陈俊慧; 梁冬晖; 徐灵珑; 刘选华
Original assignee: Guangzhou Hes Medical Instrument Co ltd
Current assignee: Guangzhou Hes Medical Instrument Co ltd
Priority date: 2018-10-23
Filing date: 2018-10-23
Publication date: 2021-06-04
Anticipated expiration: 2038-10-23
Also published as: CN109125750A

Abstract

The invention discloses a steam sterilizer, which comprises a cylinder body and a cylinder cover, wherein an inner cylinder with an open top is arranged in the cylinder body, a solution is arranged in the cylinder body, a heating pipe is arranged in the solution, a steam channel is formed between the inner side wall of the cylinder body and the outer side wall of the inner cylinder, and the upper end of the inner cylinder is provided with a blocking ring for opening or closing the steam channel. The invention has simple structure and convenient operation, can sterilize articles, simultaneously dries the sterilized articles and improves the qualified rate of sterilized products.

Description

Steam sterilizer

Technical Field

The present invention relates to a steam sterilizer.

Background

The pressure steam sterilizer is a rapid and reliable sterilization device for articles by utilizing saturated pressure steam, and has the advantages of rapid heating, thorough sterilization, safety and reliability, and no need of adding extra disinfectant, thereby being widely applied to the unit places of medical sanitation, scientific research, agriculture, food industry and the like, and being a main method for sterilizing high-temperature resistant articles at present.

In pressure steam sterilization equipment, a small vertical sterilizer and a portable sterilizer which are simple to operate, light, convenient and relatively low in cost can meet the sterilization requirement of articles with small loading capacity, so that the sterilizer is widely applied to places such as medical institutions, research rooms, tissue culture factories, food factories and beauty parlors.

However, the conventional vertical pressure steam sterilizer and the portable pressure steam sterilizer have a simple structure, and only heat the water filled in the cylinder by the temperature rising device in a sealed environment to form high pressure steam, thereby achieving a sterilization effect, and in addition, generally have no other additional functions. Therefore, in some vertical sterilizers and portable sterilizers on the market at present, because the water vapor is directly evaporated above the inner barrel, the hot and humid air sinks when being cooled, and is attached to the surface of the sterilization package to influence the drying effect. For insufficiently dried articles, the surfaces may form open fluid pathways that allow microorganisms to pass through the sterile packaging into the sterilized article, resulting in unacceptable sterilization.

Disclosure of Invention

The invention aims at the problems in the prior art and provides a steam sterilizer which has simple structure and convenient operation, can sterilize articles and simultaneously dry and sterilize articles.

The utility model provides a steam sterilizer, includes barrel and cover, is provided with the open-top interior bucket in the barrel, is provided with solution in the barrel, is provided with the heating tube in the solution, is formed with the steam flow path between barrel inside wall and the interior bucket lateral wall, and interior bucket upper end is provided with the separation circle that is used for opening or closes the steam flow path.

Furthermore, an opening is formed in the bottom of the inner barrel and connected with one end of an exhaust piece, the other end of the exhaust piece is fixed to the bottom of the barrel, and a silica gel sealing ring is arranged at the joint of the opening and the exhaust piece.

Further, a temperature sensor is arranged on the exhaust member.

Further, a tripod is arranged in the barrel, and the inner barrel is arranged at the upper end of the tripod.

Further, a safety valve is arranged on the cylinder cover.

Further, the solution is an aqueous solution.

Further, the cross section of the blocking ring is in a reverse right angle shape, a triangular shape, a square shape or a circular shape.

Further, the blocking ring is made of high-temperature-resistant rubber.

Further, the sterilizer is hand-held or vertical.

The invention has the beneficial effects that: the invention can be realized by simply adding a special barrier ring, and a sterilization and drying function is added to a vertical pressure steam sterilizer or a portable pressure steam sterilizer. When the separation ring is opened, the articles in the inner barrel body are sterilized, and when the separation ring is closed, the articles are dried and sterilized by using the residual high-temperature water in the barrel body as a heat source. The invention has simple structure and energy saving, and can quickly achieve the effects of sterilizing and drying sterilized articles.

Drawings

FIG. 1 is a block diagram of a steam sterilizer;

FIG. 2 is a block diagram of multiple baffle rings of a steam sterilizer;

FIG. 3 is a schematic view of a sterilization configuration of a steam sterilizer;

FIG. 4 is a schematic diagram of a dry configuration of a steam sterilizer;

fig. 5 is a schematic view showing the backflow of humid air after opening the sterilizer cover after the sterilization of the conventional steam sterilizer is completed.

In the figure: 1-cylinder, 2-cylinder cover, 3-inner cylinder, 4-spacing ring, 5-aqueous solution, 6-heating tube, 7-exhaust element, 8-silica gel sealing ring, 9-tripod and 10-safety valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

As shown in fig. 1 to 4, a portable or vertical steam sterilizer comprises a cylinder body 1 and a cylinder cover 2, an inner cylinder 3 with an open top is arranged in the cylinder body 1, a water solution 5 is arranged in the cylinder body 1, a heating pipe 6 is arranged in the water solution 5, a steam channel is formed between the inner side wall of the cylinder body 1 and the outer side wall of the inner cylinder 3, and a separation ring 4 for opening or closing the steam channel is arranged at the upper end of the inner cylinder 3. The separation ring 4 is made of high-temperature-resistant rubber, and the section of the separation ring 4 is in a shape of an inverted right angle, a triangle, a square or a circle.

In this embodiment, the bottom of the inner barrel 3 is provided with an opening, the opening is connected with one end of the exhaust member 7, the other end of the exhaust member 7 is fixed at the bottom of the barrel 1, and a silica gel sealing ring 8 is arranged at the joint of the opening and the exhaust member 7 (the silica gel sealing ring 8 has a one-way function and can only exhaust air, and the aqueous solution 5 in the barrel 1 cannot enter the inner barrel 3). Further, a PT100 temperature sensor is provided on the exhaust port 7. The PT100 temperature sensor can sense temperature, can effectively adjust water temperature, and can better achieve the effects of sterilization and drying.

In this embodiment, a tripod 9 is provided in the cylinder 1, and an inner barrel 3 is provided at the upper end of the tripod 9. The tripod 9 is arranged in the barrel body 1 and used for fixing the inner barrel 3. This arrangement facilitates better securing of the inner barrel 3 within the barrel 1.

In this embodiment, the cylinder cover 2 is provided with a safety valve 10. When the pressure in the cylinder body 1 reaches a certain value, the safety valve 10 can be automatically opened to release the pressure, so that the pressure in the cylinder body 1 is prevented from continuously rising, and the sterilizer is protected.

The invention utilizes the gap between the barrel 1 and the inner barrel 3 to form a steam channel, and a blocking ring 4 made of high-temperature resistant rubber is arranged. The placement of the baffle ring 4 is shown in figure 1, the structural view of the baffle ring 4 is shown in one of figure 2, and it should be understood that the cross-sectional view of the baffle ring 4 shown in figure 2 is only a partial structure in a plurality of styles, in order to make the patent of the invention easier to understand. Indeed, it is within the scope of the present invention for the barrier collar 4 to have a similar conditionally selective vapor barrier effect.

The present embodiment is a portable pressure steam sterilizer with a volume of 20L (main structure is shown in FIG. 1). Meanwhile, a portable pressure steam sterilizer of the same volume without the barrier ring 4 was used as a control example (the main structure is shown in FIG. 5).

The working principle of the invention is as follows: as shown in figure 1, firstly distilled water is added into a cylinder body 1, an inner barrel 3 is installed by taking a tripod 9 and an exhaust member 7 which are welded at the bottom of the cylinder body 1 as supports, a silica gel sealing ring 8 is installed at the joint of an opening at the bottom of the inner barrel 3 and the exhaust member 7, articles to be sterilized are placed in the silica gel sealing ring, and a blocking ring 4 is fixedly installed at the edge of the opening of the inner barrel 3, so that a sealed space is formed between the cylinder body 1 and the inner barrel 3. As shown in fig. 2, the barrier ring 4 is placed in an inverted right angle style.

As shown in fig. 3, the cartridge cover 2 is closed and heating is started. The gas pressure in the cylinder 1 increases as the container is heated. When the pressure rises to a certain value, the blocking ring 4 with the inverted-right-angle structure is pushed open by the water vapor in the cylinder body 1, the water vapor can enter the inner barrel 3, the cold air in the inner barrel 3 is discharged through the opening at the bottom of the inner barrel 3 and the exhaust member 7 through the cold discharging procedure of the sterilizer, the water vapor is uniformly diffused in the cylinder body 1, high-temperature saturated steam is obtained, and the sterilization purpose is achieved through constant temperature and time keeping.

Referring to fig. 4, after reaching the predetermined temperature and maintaining constant temperature and pressure for a certain time, the heating is stopped after the sterilization is completed, the safety valve 10 is opened to reduce the pressure in the sterilizer to zero, and at this time, the separation ring 4 is closed again, so that a sealed space is formed between the barrel body 1 and the inner barrel 3 again. The cover 2 is opened, and the high-temperature residual heat of the water in the sterilized cylinder body 1 is used as a drying heat source. Because the isolating ring 4 is closed, and under the action of the silica gel sealing ring 8, hot water in the cylinder body 1 cannot diffuse to the inner barrel 3, and the humidity in the inner barrel 3 cannot be increased; the sealed space between the cylinder body 1 and the inner barrel 3 keeps a certain temperature, the damp and hot air in the inner barrel 3 is continuously discharged outwards, meanwhile, the cold air outside is continuously supplemented, so that the moisture on the surface of the sterilized article is continuously evaporated outwards, and the aim of quick drying is finally achieved. The drying purpose is achieved, and the drying temperature is 40-100 ℃.

As shown in figure 5, in the comparison example without the baffle ring 4, because the high-temperature residual water in the cylinder body continuously evaporates outwards, a damp and hot air mass is formed above the cylinder opening of the sterilizer, and the damp and hot air mass condenses into water after being cooled and adheres to the surface of the sterilized article, so that the damp and hot air cannot be discharged, and the sterilized article cannot be dried.

Therefore, the barrier ring 4 provided by the invention can increase the drying effect of a vertical pressure steam sterilizer or a portable pressure steam sterilizer, and maintain the sterility of sterilized articles.

The foregoing examples, and other figures, merely represent one embodiment of the invention and are intended to illustrate and not to limit the invention. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A steam sterilizer, characterized in that: the steam heating barrel comprises a barrel body and a barrel cover, wherein an inner barrel with an open top is arranged in the barrel body, a solution is arranged in the barrel body, a heating pipe is arranged in the solution, a steam channel is formed between the inner side wall of the barrel body and the outer side wall of the inner barrel, a separation ring for automatically opening or closing the steam channel is arranged at the upper end of the inner barrel, and the separation ring is made of high-temperature-resistant rubber.

2. A steam sterilizer as claimed in claim 1, wherein: the bottom of the inner barrel is provided with an opening, the opening is connected with one end of an exhaust piece, the other end of the exhaust piece is fixed at the bottom of the barrel, and a silica gel sealing ring is arranged at the joint of the opening and the exhaust piece.

3. A steam steriliser as claimed in claim 2, wherein: and the exhaust piece is provided with a temperature sensor.

4. A steam sterilizer as claimed in claim 1, wherein: a tripod is arranged in the barrel, and the inner barrel is arranged at the upper end of the tripod.

5. A steam sterilizer as claimed in claim 1, wherein: the cylinder cover is provided with a safety valve.

6. A steam sterilizer as claimed in claim 1, wherein: the solution is an aqueous solution.

7. A steam sterilizer as claimed in claim 1, wherein: the cross section of the blocking ring is in a reverse right angle shape, a triangular shape, a square shape or a round shape.

8. A steam sterilizer as claimed in claim 1, wherein: the sterilizer is portable or vertical.