CN201862007U - Fast cooling device for sterilizer - Google Patents

Abstract

A rapid cooling device for a sterilizer, comprising a sterilizer inner chamber and a sterilizer jacket located outside the sterilizer inner chamber, characterized in that it also includes a water tank, a circulation pump, a first heat exchanger and a second heat exchanger Heater, the upper part of the water tank is connected to the jacket of the sterilizer through pipelines, the bottom of the water tank is connected to the circulation pump, the first heat exchanger, the second heat exchanger and the jacket of the sterilizer in turn through pipelines, the upper part of the water tank is connected to the sterilizer There is a fifth valve on the pipeline between the jacket of the sterilizer, a fourth valve on the pipeline between the second heat exchanger and the jacket of the sterilizer, and a valve between the bottom of the water tank and the fourth valve and the second heat exchanger. The pipelines are connected through the return pipe, the return pipe is provided with a third valve, the upper part of the water tank is also connected with a softened water inlet pipe, and the softened water inlet pipe is provided with a first valve. The rapid cooling device of the sterilizer shortens the cooling time after the sterilization of the sterilizer, improves the work efficiency and avoids scalding accidents.

Description

Sterilizer rapid cooling device

technical field

The utility model relates to a rapid cooling device for a sterilizer, in particular to a rapid cooling device for various types of damp heat sterilizers with jackets, belonging to the field of pharmaceutical machinery.

Background technique

At present, all kinds of sterilizers do not have jacket rapid cooling function. Take the pulsating vacuum sterilizer as an example: after the sterilization process is completed, without going through the cooling stage, the temperature of the sterilization inner chamber is still maintained at 90-100°C. Only the temperature can be reduced to 80-90°C. If you want to open the door at this time and take out the sterilized items, it is very easy to cause scald accidents. If you want to wait for the temperature to drop to about 60°C before opening the door, you need at least 3 to 4 hours of natural cooling time.

Utility model content

According to the deficiencies in the prior art above, the technical problem to be solved by this utility model is: provide a kind of device that solves the above-mentioned defects, shortens the cooling time after the sterilizer is sterilized, improves the work efficiency, and avoids the occurrence of burns. Accidental sterilizer rapid cooling unit.

The technical solution adopted by the utility model to solve the technical problem is: a rapid cooling device for a sterilizer, which includes a sterilizer inner chamber and a sterilizer jacket located outside the sterilizer inner chamber, and is characterized in that: it also includes Water tank, circulation pump, first heat exchanger and second heat exchanger, the upper part of the water tank is connected with the jacket of the sterilizer through pipelines, the bottom of the water tank is connected with the circulation pump, the first heat exchanger, the second heat exchanger and the sterilizer The jackets of the sterilizer are connected by pipelines in turn, the fifth valve is set on the pipeline between the upper part of the water tank and the sterilizer jacket, and the fourth valve is set on the pipeline between the second heat exchanger and the sterilizer jacket. The pipeline between the bottom of the water tank and the fourth valve and the second heat exchanger is connected through the return pipe, the third valve is provided on the return pipe, and the softened water inlet pipe is connected to the upper part of the water tank, and the softened water inlet pipe is provided with the first valve.

A compressor inlet pipe is connected to the jacket of the sterilizer, and a second valve is arranged on the compressor inlet pipe.

The top of the water tank is connected with a water tank exhaust pipe.

The first heat exchanger is connected with a steam inlet pipe and a steam drain pipe, and the steam inlet pipe is provided with a sixth valve.

The second heat exchanger is connected with a cooling water inlet pipe and a cooling water outlet pipe, and the cooling water inlet pipe is provided with a seventh valve.

The water tank is provided with a second water level switch.

A first water level switch is provided on the pipeline between the jacket of the sterilizer and the fourth valve.

The whole cooling process can be divided into three stages: preheating, cooling, and draining. The details are as follows:

Preheating stage: the water tank is first filled with demineralized water through the first valve (the water level in the water tank is controlled by the second water level switch), and then the demineralized water passes through the circulating pump and the first heat exchanger in turn (the first heat exchanger passes through the The sixth valve enters steam, softened water is heated), the second heat exchanger (the second heat exchanger does not enter cooling water in the preheating stage), the third valve, and then returns to the water tank. In this stage, preheat the softened water in the water tank so that the temperature difference between the softened water temperature and the jacket temperature of the sterilizer is less than a certain set value (such as 30°C), so as to avoid damage to the equipment due to excessive temperature difference The subject is damaged.

Cooling stage: The softened water in the water tank passes through the circulation pump, the first heat exchanger (the first heat exchanger does not enter steam during the cooling stage), and the second heat exchanger (the second heat exchanger passes through the seventh valve during the cooling stage) into the cooling water to cool down the softened water, it would be better to use chilled water below 10°C), the fourth valve enters the jacket of the sterilizer, cools the jacket of the sterilizer, and returns to the water tank through the fifth valve . This cycle goes on and on to achieve the purpose of cooling the inner chamber of the sterilizer.

Drainage stage: When the temperature in the inner chamber of the sterilizer drops to the set value, the cooling process is stopped, the second valve is opened, and compressed air is introduced into the jacket of the sterilizer, so that the demineralized water in the jacket of the sterilizer is compressed. Under the action of air, it passes through the fourth valve and the third valve in turn, and returns to the water tank. When the signal of the first water level switch disappears, it means that all the water in the jacket of the sterilizer has been discharged, and all the cooling process is over at this time.

The beneficial effect of the utility model is: the rapid cooling device of the sterilizer firstly preheats the softened water in the water tank, then passes the softened water into the jacket of the sterilizer, and gradually cools down the softened water, so that the sterilization The temperature of the jacket of the sterilizer also drops accordingly, and finally achieves the purpose of prompting the temperature of the sterilizing inner chamber to drop rapidly, avoiding the excessive temperature difference between the water temperature and the jacket of the sterilizer, when the softened water enters the jacket of the sterilizer, the The phenomenon that the temperature of the sterilizer jacket drops sharply and causes damage to the main body of the equipment shortens the cooling time after the sterilizer is sterilized, improves work efficiency, and avoids scalding accidents.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the figure: 1. Inner chamber of sterilizer; 2. Jacket of sterilizer; 3. Water tank; 4. Circulation pump; 5. First heat exchanger; 6. Second heat exchanger; 7. Fifth valve; 8. The fourth valve; 9. The return pipe; 10. The third valve; 11. The softened water inlet pipe; 12. The first valve; 13. The compressor inlet pipe; 14. The second valve; 15. The water tank exhaust pipe; 16. Steam inlet pipe; 17. Steam drain pipe; 18. Sixth valve; 19. Cooling water inlet pipe; 20. Cooling water outlet pipe; 21. Seventh valve; 22. Second water level switch; 23. First water level switch.

Detailed ways

Embodiments of the utility model are further described below in conjunction with the accompanying drawings:

As shown in Figure 1, the sterilizer jacket 2 is located outside the inner chamber 1 of the sterilizer, the upper part of the water tank 3 is connected to the sterilizer jacket 2 through pipelines, and the bottom of the water tank 3 is connected to the circulating pump 4 and the first heat exchanger 5 , the second heat exchanger 6 and the jacket 2 of the sterilizer are connected through pipelines sequentially, the pipeline between the upper part of the water tank 3 and the jacket 2 of the sterilizer is provided with a fifth valve 7, the second heat exchanger 6 and the sterilizer A fourth valve 8 is provided on the pipeline between the sterilizer jacket 2, and the pipeline between the bottom of the water tank 3 and the fourth valve 8 and the second heat exchanger 6 is connected through a return pipe 9, and the return pipe 9 is provided with a fourth valve. Three valves 10, the upper part of the water tank 3 is also connected with a softened water inlet pipe 11, and the softened water inlet pipe 11 is provided with a first valve 12; the sterilizer jacket 2 is connected with a compressor inlet pipe 13, and on the compressor inlet pipe 13 A second valve 14 is provided; a water tank exhaust pipe 15 is connected to the top of the water tank 3; a steam inlet pipe 16 and a steam drain pipe 17 are connected to the first heat exchanger 5, and a sixth valve 18 is arranged on the steam inlet pipe 16; The second heat exchanger 6 is connected with a cooling water inlet pipe 19 and a cooling water outlet pipe 20, the cooling water inlet pipe 19 is provided with a seventh valve 21; the water tank 3 is provided with a second water level switch 22; the sterilizer jacket 2 and A first water level switch 23 is provided on the pipeline between the fourth valves 8 .

The whole cooling process can be divided into three stages: preheating, cooling, and draining. The details are as follows:

Preheating stage: the water tank 3 is first filled with demineralized water through the first valve 12 (the water level in the water tank 3 is controlled by the second water level switch 22), and then the demineralized water passes through the circulation pump 4 and the first heat exchanger 5 in sequence (in the preheating stage The first heat exchanger 5 enters steam through the sixth valve 18 to heat the demineralized water), the second heat exchanger 6 (the second heat exchanger 6 does not enter the cooling water in the preheating stage), the third valve 10, and then returns to tank 3. In this stage, the demineralized water in the water tank 3 is preheated so that the temperature difference between the demineralized water temperature and the temperature of the sterilizer jacket 2 is less than 30°C, so as to avoid damage to the main body of the equipment due to an excessive temperature difference.

Cooling stage: the demineralized water in the water tank 3 passes through the circulating pump 4, the first heat exchanger 5 (the first heat exchanger 5 does not enter steam in the cooling stage), the second heat exchanger 6 (the second heat exchanger in the cooling stage The device 6 enters the cooling water through the seventh valve 21 to cool down the softened water, use chilled water below 10°C), the fourth valve 8 enters the sterilizer jacket 2, cools the sterilizer jacket 2, and passes through the first Five valves 7 get back in the water tank 3. This cycle goes on and on to achieve the purpose of cooling the inner chamber 1 of the sterilizer.

Drainage stage: When the temperature of the inner chamber 1 of the sterilizer drops to the set value, the cooling process is stopped, the second valve 14 is opened, and compressed air is introduced into the jacket 2 of the sterilizer to make the water in the jacket 2 of the sterilizer The softened water returns to the water tank 3 through the fourth valve 8 and the third valve 10 under the action of the compressed air. When the signal of the first water level switch 23 disappears, it means that all the water in the jacket 1 of the sterilizer has been discharged, and all cooling processes are finished at this moment.

Claims (7)

1. A rapid cooling device for a sterilizer, comprising a sterilizer inner chamber (1) and a sterilizer jacket (2) outside the sterilizer inner chamber (1), characterized in that it also includes a water tank (3 ), the circulation pump (4), the first heat exchanger (5) and the second heat exchanger (6), the upper part of the water tank (3) is connected with the sterilizer jacket (2) through pipelines, and the bottom of the water tank (3) It is connected with the circulation pump (4), the first heat exchanger (5), the second heat exchanger (6) and the jacket of the sterilizer (2) in turn through pipelines, and the upper part of the water tank (3) is connected with the jacket of the sterilizer A fifth valve (7) is provided on the pipeline between (2), a fourth valve (8) is provided on the pipeline between the second heat exchanger (6) and the sterilizer jacket (2), and the water tank ( 3) The pipeline between the bottom, the fourth valve (8) and the second heat exchanger (6) is connected through the return pipe (9), the return pipe (9) is provided with the third valve (10), the water tank (3 ) top is also connected with demineralized water inlet pipe (11), and demineralized water inlet pipe (11) is provided with first valve (12). 2. The rapid cooling device for sterilizer according to claim 1, characterized in that: said sterilizer jacket (2) is connected with a compressor inlet pipe (13), and the compressor inlet pipe (13) is A second valve (14) is provided. 3. The rapid cooling device for sterilizer according to claim 1, characterized in that: the top of the water tank (3) is connected with a water tank exhaust pipe (15). 4. The sterilizer rapid cooling device according to claim 1, characterized in that: the first heat exchanger (5) is connected with a steam inlet pipe (16) and a steam drain pipe (17), and the steam inlet The pipe (16) is provided with a sixth valve (18). 5. The rapid cooling device for sterilizer according to claim 1, characterized in that: the second heat exchanger (6) is connected with a cooling water inlet pipe (19) and a cooling water outlet pipe (20), The cooling water inlet pipe (19) is provided with a seventh valve (21). 6. The rapid cooling device for sterilizer according to claim 1, characterized in that: the water tank (3) is provided with a second water level switch (22). 7. The rapid cooling device for sterilizer according to claim 1, characterized in that: a first water level switch ( twenty three).

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