CN100588431C - Sterilization box - Google Patents

Abstract

The sterilizing box adopts ozone to kill bacteria and sterilize articles, and the present invention aims at providing one novel sterilizing box with simple structure, high sealing performance, great processing amount and high sterilizing effect. In the technological scheme, the sterilizing box includes one sealed cabinet with sealing partition board to separate the cabinet into sterilizing chamber and controlling chamber; and the partition board is provided with air inlet and air outlet communicated with the sterilizing chamber and the controlling chamber separately. There are sensor in thesterilizing chamber; ozone generator in the controlling chamber and with air inlet and output pipe connected to the air conveying system; intelligent control board in the controlling chamber and connected to the parts in the controlling chamber and the power supply. The present invention can realize automatic control.

Description

Sterilization box

technical field

The invention relates to a sterilization box, in particular to a sterilization box which uses ozone gas to kill bacteria and sterilize articles.

Background technique

Existing disinfection boxes generally adopt high-temperature, low-temperature or steam disinfection methods, and are composed of an outer shell, an inner tank, and a disinfection device. The disinfection device includes a heater, a cooler, or a drug evaporator. These devices all need energy, are heated or refrigerated through pipelines, or are provided with special drug evaporators to transfer gas to sterilize the articles in the box. The structures are complicated and the operation is cumbersome. In recent years, ozone generators have also been used for disinfection, but they can only sterilize loose items or a small number of items, and the sterilization efficiency for a large number of or closely stacked items is low, such as for a large number of towels, paper and other items at the same time. Disinfection, its disinfection speed is slow, the time is long and the sterilization is not complete.

Contents of the invention

The purpose of the present invention is to provide a new type of sterilization box with simple structure, good sealing performance, large processing capacity and improved disinfection and sterilization efficiency.

In order to achieve the above object, the present invention adopts the following technical scheme: a sterilizing box, comprising a sealed cabinet with a sealed cover, a sealed partition is set inside it, and the sealed cabinet is divided into upper and lower chambers, on which The room is a sterilization room, and the lower room is a control room. Its characteristics are:

A sensor is arranged on the upper side of the sealed partition;

The control room is provided with an ozone generator, a gas transmission system and an ozone reducer, the input end of the ozone generator is an air inlet connected to the outside world, and the output end of the ozone generator is communicated with the input end of the gas transmission system through a pipeline. The output end of the gas transmission system communicates with the input end of the ozone reducer through the pipeline, and the output end of the ozone reducer communicates with the outside world;

The air inlet and the air outlet opening in the sterilization chamber are provided on the sealing partition, which communicate with the gas transmission system through pipelines respectively;

An intelligent control board is arranged in the control room, and it is connected with the ozone generator, the gas transmission system, the ozone reducer and the power supply components arranged in the control room through lines.

In order to increase the concentration of ozone gas, an oxygen storage container can also be added in the control room. The oxygen storage container communicates with the ozone generator through an oxygen delivery pipe, and the oxygen delivery pipe is provided with a solenoid valve.

The ozone reducer is a tubular electric heating ozone reducer.

The sealing cover is provided with a locking device, and a shelf net is provided in the sterilization chamber, and there is a gap between the shelf net and the sealing partition; an air filter is provided at the air inlet of the ozone generator.

The gas transmission system has two settings:

A kind of air delivery system includes an air pump and a vacuum pump, the input end of the air delivery system is the input end of the air pump, and the output end of the air pump is connected to the air inlet through a pipeline; the output of the air delivery system The end is the output end of the vacuum pump, and the input end of the vacuum pump is connected to the exhaust hole through a pipeline; electromagnetic valves are respectively arranged on the pipeline of the air inlet and the pipeline of the exhaust port.

Another type of gas transmission system is composed of an inflatable vacuum two-way pump communicated with two three-way pipe fittings (24), (29) through pipelines; the input end of the inflatable vacuum two-way pump is communicated with one end of the three-way pipe fitting (24) , the other end of the three-way pipe (24) communicates with the ozone generator, and its three ends communicate with the ozone reducer through the three-way pipe (29); The output ends of the pumps are connected, and a solenoid valve is provided on the pipeline; the exhaust port is communicated with the three-way pipe fitting (29) through the pipeline, and a pressure limiting and exhaust solenoid valve is provided on the pipeline.

The intelligent control board is provided with a CPU control device connected to the power supply, the input ends of the CPU are respectively connected with the sensor and an electronic switch, and the output ends of the CPU are respectively connected to the ozone generator through a photoelectric isolator. device, the ozone reducer, the solenoid valve and the pressure limiting and exhaust solenoid valves are connected, and the output end of the CPU is respectively provided with a display device and a buzzer alarm device.

The CPU is a single-chip microcomputer with microcomputer control, and the display device is an 8-segment digital display; operating programs are stored in the single-chip microcomputer, and the CPU processor sends signals, and the photoelectric isolator receives signals and inputs them to the electromagnetic valve, the pressure limiting and exhaust solenoid valve, the ozone generator and the ozone reducer.

There are two sensors, namely a pressure sensor and a vacuum sensor, which are arranged on one side of the exhaust port or between the air inlet and the exhaust port.

The present invention adopts above technical scheme, and its beneficial effect is:

1. The sterilization room and the control room can be set up in one piece or separately. Its structure is flexible and can be assembled according to needs.

2. An air filter is installed at the air inlet, which can ensure the quality of the gas entering the control room and improve the treatment effect of the overall sterilization box.

3. Use the combination of ozone generator, air pump and vacuum pump, or replace the air pump and vacuum pump with an inflatable vacuum bidirectional pump. Both groups of methods make a large amount of ozone gas input into the sterilization chamber, and the ozone gas is controlled by atmospheric pressure. For the disinfection of objects, the disinfection treatment capacity is large and the speed is fast, and at the same time, it is non-toxic and harmless to the sterilized objects;

3. The use of intelligent control board can improve the degree of automatic control of the sterilization box, reduce manual operation and improve work efficiency.

4. Oxygen storage container can be set in the control room as needed, and the oxygen storage container is connected with the ozone generator through the oxygen pipeline. The input of oxygen can speed up the reaction of the ozone generator, increase the amount of ozone generated, and make the concentration of ozone gas in the sterilization room high. , to shorten the disinfection time, and at the same time, it can thoroughly disinfect closely stacked and large-volume items, improving the quality of disinfection.

5. The gas outlet is equipped with an ozone reducer. A large amount of exhaust gas with ozone gas remaining from the sterilization box is reduced to oxygen by the high-temperature reduction of the ozone reducer, and then discharged through the external opening of the ozone reducer, effectively preventing the ozone gas from pollution of the air.

Description of drawings

Fig. 1 is a structural schematic diagram of embodiment one of the present invention

Fig. 2 is the structural representation of embodiment two of the present invention

Fig. 3 is the structure schematic diagram of embodiment three of the present invention

Figure 4 is the control schematic diagram of Figure 1

Figure 5 is the control schematic diagram of Figure 2

Figure 6 is the control schematic diagram of Figure 3

Fig. 7 is the electrical schematic diagram of the present invention

Detailed ways

Embodiment one:

As shown in Figure 1: the present invention comprises sterilization room 1, control room 2, sealing cover 3, sealing partition 4, shelf net board 5, ozone reducer 6, air inlet filter screen 7, ozone generator 8, partition Plate 9, pipeline 10, air pump 11, solenoid valve 12, 14, vacuum pump 13, intelligent control board 15, power supply assembly 16, air inlet 17, exhaust port 18, pressure sensor 19, vacuum sensor 20 composition.

The box body of the present invention is a sealed cabinet body, the outer shell of which is a plastic steel plate, and the inner shell is a circular high-pressure warehouse, and a sealed partition 4 is arranged on the sealed cabinet body to divide the sterilization box into a closed sterilization chamber 1 and a control chamber. In the chamber 2, the interior of the sterilization chamber 1 is provided with a shelf net 5 for placing sterilized articles, and the distance between the shelf net 5 and the sealing partition 4 is set to 3 centimeters. The top of the sterilization box 1 is provided with a sealing cover 3, and the sealing cover 3 is provided with a locking device; the sealing partition 4 is provided with an air inlet 17 and an exhaust port 18, which are opened in the sterilization chamber 1 and connected with the control room. 2 are connected through pipelines; a pressure sensor 19 and a vacuum sensor 20 are provided on the right side of the exhaust port 18 of the sealing partition 4.

One side in the control room 2 is provided with an ozone generator 8, and the input end side of the ozone generator 8 is provided with an air inlet, and an air filter 7 is connected in the middle of the air inlet, and its mesh diameter is set to 5 μm; the ozone generator 8 The output end is provided with a partition 9, and a through hole is opened in the middle, and a pipeline 10 is sealed and connected with the through hole and connected with the gas delivery system. The gas delivery system is composed of an air pump 11 and a vacuum pump 13. The air pump The input end of 11 is connected with the through hole of the output end of the ozone generator 8 through the pipeline 10, the output end of the air pump 11 is connected with the air inlet 17 through the pipeline, and an electromagnetic valve is installed at the junction of the air inlet 17 and the pipeline. Valve 12; the exhaust port 18 is connected to the input end of the vacuum pump 13 through a pipeline, and a solenoid valve 14 is installed on the pipeline connecting the exhaust port 18 and the vacuum pump 13; the output end of the vacuum pump 13 communicates with the ozone reducer 6 through a pipeline , The gas outlet of the ozone reducer 6 leads to the outside of the box.

An intelligent control board 15 is arranged in the control room 2, and the intelligent control board 15 is connected with the power supply assembly 16 by circuit, and the power supply assembly comprises the high-voltage coil of fuse, ozone generator 8 etc., and its power supply assembly is the assembly part sold in the market.

As shown in Figure 4, described intelligent control panel is made up of input part, control part and output part, and control part is a CPU single-chip microcomputer, and the input end of CPU is connected with external power supply, and the input end of CPU also joins with input part respectively, The input part includes an electronic switch, a pressure sensor 19 and a vacuum sensor 20; the output end of the CPU is connected to the output part, and the output part includes a photoelectric isolator and a display device. Device 8, air pump 11, vacuum pump 13, solenoid valve 12 are connected with solenoid valve 14, and the display device is an 8-segment digital display.

The above-mentioned CPU is a single-chip microcomputer controlled by a microcomputer. The CPU control device sends a signal, and the photoelectric isolation device receives the signal. The valves 12, 14 and the above components complete their respective operating procedures under the control of the CPU.

As shown in Figure 7, the left side is the input terminal, and pressure sensor 19, vacuum sensor 20, an electronic switch device are connected with the input terminal of CPU respectively; The output terminal of CPU is connected with an 8-segment digital display; The photoelectric isolation circuit is connected with a buzzer through a triode amplifier; when the CPU control device receives the pressure signal from the pressure sensor 19 or the vacuum sensor 20 in the sterilization box, the CPU sends a signal to the display panel through the signal device, which is displayed on the display. The time of the pressure change in the sterilization box; at the same time, the signal sent by the CPU is transmitted to the photoelectric isolation circuit and converted into a weak sound signal, and then amplified by the triode amplifier, the buzzer alarms; the output terminals of the CPU are respectively connected to several strips with photoelectric The switching circuit in which the isolation circuit communicates with the bidirectional thyristor, the output terminals of the bidirectional thyristor are respectively connected to a multi-bit output control connection port; the output control connection port is connected to an AC voltage input port, and the input of the electronic switch device The terminal is connected with one or two groups of DC voltage input ports, and the output terminal of the electronic switch device is connected with the input terminal of the CPU.

The working principle of this embodiment is:

Open the sterilization box, put the sterilized article into the sterilization chamber 1, tightly cover its sealing cover 3, and buckle the lock; open the solenoid valve 14, close the solenoid valve 12, and the vacuum pump 13 starts to work, and the sterilization chamber 1 The air in the sterilization chamber is extracted from the exhaust port 18, and when the air in the sterilization chamber 1 is pumped to a negative pressure of 50KPa, the vacuum sensor 20 sends a pressure signal to the intelligent control board, and the intelligent control board controls the solenoid valve 14 to close, and the vacuum pump 13 stops working; The solenoid valve 12 is opened, the ozone generator 8 starts to work, and the air pump 11 starts to inflate the sterilization chamber 1. When the sterilization chamber 1 is inflated to a positive pressure of 0.08MPa, the pressure sensor 19 transmits a pressure signal to the intelligent control board, and the air is inflated. The pump 11 stops working, the solenoid valve 12 is closed, the ozone generator 8 stops working, the intelligent control board sends a signal after 30 seconds, the solenoid valve 13 is opened, the vacuum pump 13 starts to work, the ozone reducer 6 starts to work, and the The ozone gas is discharged from the exhaust port 18, filtered by the vacuum pump 13, and then the residual ozone is reduced to oxygen by the ozone reducer 6 and discharged into the atmosphere to avoid the pollution of the ozone gas to the air.

When the pressure in the sterilization chamber 1 is 0, the pressure sensor 19 transmits the signal to the intelligent control panel, the intelligent control panel sends a signal, the ozone reducer 6 stops working, and the buzzer alarm pressure is 0 at the same time, and the intelligent control panel sends a signal to the intelligent control panel. The display device sends out a signal, and the time information is displayed by the display device, indicating that the disinfection is completed, and the sealing cover 3 is opened to take out the disinfection object to complete the disinfection.

Embodiment two:

As shown in Figure 2, the overall structure of the sterilizing box is basically the same as Embodiment 1, and its difference is that an oxygen storage container 27 has also been set up in the control room, and the oxygen storage container 27 is communicated with the ozone generator through an oxygen delivery pipeline, An electromagnetic valve 26 is also provided on the oxygen pipeline.

Due to the addition of an oxygen storage container, the purity of oxygen can be improved, the amount of ozone gas produced by the ozone generator can be increased, and the concentration of ozone gas charged into the sterilization chamber is high. Therefore, the shelf net placed in the sterilization chamber 1 can The distance between the plate 5 and the sealing partition 4 is set as 1 centimeter, so that the internal volume of the sterilization chamber is increased, and a large amount of sterilized articles can be processed.

As shown in Figure 5, the input part and control part of the intelligent control board are the same as those in Embodiment 1, which will not be repeated here. The solenoid valve 26 of the oxygen container 27 switch is connected.

The above-mentioned CPU is a microcomputer controlling a single-chip microcomputer, and the single-chip microcomputer sends a signal to the device in the control room. After the photoelectric isolator receives the signal, after anti-interference processing, it is respectively input to the ozone generator 8, the air pump 11, the vacuum pump 13, and the ozone reducer. 6 and solenoid valves 12, 14, 26, the above-mentioned components complete their respective operating procedures under computer control.

The electrical principle of this embodiment is the same as that of Embodiment 1 and will not be described again.

The working principle of this embodiment is basically the same as that of Embodiment 1, the difference is that an oxygen storage container is added in the control room, and the oxygen storage container injects oxygen into the ozone generator at the same time when the ozone generator is working, so as to speed up the production of the ozone generator. The purpose of the amount of ozone gas generated is to increase the concentration of ozone gas in the sterilization chamber and improve its disinfection ability and effect on items. Generally, this scheme is adopted when there are many items that need to be disinfected at the same time, or when the items in a closely superimposed state require high disinfection quality, such as hotels, hospitals, kindergartens, nursing homes, student dormitories of colleges and universities, and apartments, etc. Places for disinfecting items, etc.

Embodiment three:

As shown in Figure 3, the present invention comprises sterilization room 1, control room 2, sealing cover 3, sealing partition 4, shelf net board 5, ozone reducer 6, air inlet filter screen 7, ozone generator 8, partition Board 9, pipeline 10, inflatable vacuum two-way pump 25, solenoid valve 12, 21, 22, 23, intelligent control board 15, power supply assembly 16, air inlet 17, exhaust port 18, pressure sensor 19, vacuum sensor 20, The three-way pipe fitting 24 and the three-way pipe fitting 29 are formed.

The box body of the present invention is a sealed cabinet body, the outer shell is plastic steel plate, and the inner shell is a circular high-pressure chamber, and a sealed partition 4 is arranged in the sealed cabinet body, which divides the sterilization box into airtight sterilization chambers. 1 and the control room 2, the inside of the sterilization chamber 1 is provided with a shelf net plate 5 for placing sterilized articles, and the distance between the shelf net plate 5 and the sealing partition 4 is set as 2 centimeters. The top of the sterilization box 1 is provided with a sealing cover 3, and the sealing cover 3 is provided with a locking device; the sealing partition 4 is provided with an air inlet 17 and an exhaust port 18, which are opened in the sterilization chamber 1 and connected with the control room. 2 are connected by pipelines; a pressure sensor 19 and a vacuum sensor 20 are provided between the air inlet 17 and the air outlet 18 of the sealing partition 4.

One side in the control room 2 is provided with an ozone generator 8, and the input end side of the ozone generator 8 is provided with an air inlet, and an air filter 7 is provided on the air inlet, and its mesh diameter is 5 μ m; the output of the ozone generator 8 A partition 9 is provided at the end of the partition 9, and a through hole is provided in the middle of the partition 9. A pipeline 10 is sealed and connected with the through hole and connected with the gas transmission system. The pipe fitting 29 is composed of pipelines.

One end of the three-way pipe fitting 24 communicates with the output end of the ozone generator 8 through the pipeline 10, and the other end connects with the input end of the inflatable vacuum two-way pump 25 through the pipeline. The output end of 25 is connected with air inlet 17 through pipeline, and solenoid valve 12 is installed on its pipeline; The other end of the three-way pipe fitting 29 communicates with the ozone reducer 6 located on the other side of the control room 2; Gas solenoid valve 21.

An intelligent control panel 15 is arranged in the control room 2, and the intelligent control panel 15 is connected with the power supply assembly 16 by circuit, and the high-voltage coil etc. of fuser, ozone generator 8 are included in the power supply assembly, and the assembly parts sold on the market are selected for use.

As shown in Figure 6, the intelligent control panel is composed of an input part, a control part and an output part, and the control part is a CPU single-chip microcomputer connected with a power supply part. The sensor 20 is connected; the CPU output is connected to a display device, and at the same time through the photoelectric isolator and the ozone reducer 6, the ozone generator 8, the inflatable vacuum two-way pump 25, the solenoid valve 12, the solenoid valve 21, the solenoid valve 22 and the solenoid valve 23 Connected, the display device is an 8-segment digital display.

Above-mentioned CPU is a microcomputer control single-chip microcomputer, and single-chip microcomputer sends signal, after photoelectric isolator receives signal, through anti-jamming processing, it is respectively input to ozone generator 8, inflatable vacuum two-way pump 25, ozone reducer 13 and electromagnetic valve 12, 21, 22, 23, the above components complete their respective operating programs under the control of the computer.

The electrical principle of this embodiment is the same as that of Embodiment 1.

The working principle of this embodiment is:

Open the sterilization box, put the sterilized items into the sterilization chamber 1, tightly cover the sealing cover 3, and buckle the lock; close the pressure limiting and exhaust solenoid valve 21, close the solenoid valve 22, open the solenoid valve 23, Open the solenoid valve 12, start to draw out the air in the sterilization chamber 1 through the air inlet 17, when the air in the sterilization chamber 1 is pumped to a negative pressure of -50KPa, the vacuum sensor 20 sends a pressure signal to the intelligent control board, and the intelligent control The board control solenoid valve 23 is closed, the inflatable vacuum bidirectional pump 25 stops pumping air, the ozone generator 8 emits ozone, the solenoid valve 21 is opened, and the inflatable vacuum bidirectional pump 25 starts to inflate the sterilization chamber 1 until the positive pressure is 0.08MPa , the pressure sensor 19 transmits the pressure signal to the intelligent control board, the ozone generator 8 stops working, the inflatable vacuum bidirectional pump 25 stops working, the solenoid valve 12 is closed, the solenoid valve 22 is closed, the solenoid valve 23 is closed, and the intelligent control board sends out after 30 seconds signal, the ozone reducer 6 starts to work, open the pressure limiting and exhaust solenoid valve 21, the ozone gas in the sterilization chamber 1 is discharged from the exhaust port 18, and then the residual ozone is reduced to oxygen by the ozone reducer 6 and discharged into the atmosphere. Avoid air pollution by ozone gas.

When the pressure in the sterilization chamber 1 is 0, the pressure sensor 19 transmits the signal to the intelligent control panel, the intelligent control panel sends an alarm signal, the ozone reducer 6 stops working, the intelligent control panel sends a signal to the display device, and the display device Disinfection release signal is displayed. After the disinfection is completed, the sealing cover 3 is opened, and the disinfection object is taken out to complete the disinfection.

In this embodiment, an oxygen storage container can also be added in the control room according to actual needs, and the installation method is the same as in the second embodiment.

Claims (6)

1, a kind of sterilization tank comprises a sealing cabinet that has seal cover, establishes a seal diaphragm in it, will seal cabinet and be divided into chamber up and down, and chamber is the sterile chamber on it, and following chamber is the control room, it is characterized in that:

Described seal diaphragm upside is provided with pick off;

Be provided with ozonator, gas transmission system, ozone reduction device and an Oxygen storage container in the described control room; The air intake of the input of described ozonator for communicating with the external world, the outfan of described ozonator is communicated with the input of described gas transmission system by pipeline, the outfan of described gas transmission system is communicated with by the input of pipeline with described ozone reduction device, and the outfan of described ozone reduction device communicates with the external world;

Described gas transmission system is one of following two kinds of situations: 1) described gas transmission system comprises an inflator pump and a vacuum pump; The input of described gas transmission system is the input of described inflator pump, described inflation delivery side of pump by pipeline be located at the air inlet of described seal diaphragm upper shed in described sterile chamber and join; The outfan of described gas transmission system is the vacuum delivery side of pump, the input of described vacuum pump by pipeline be located at the described air vent of described seal diaphragm upper shed in described sterile chamber and join; Described Oxygen storage container is communicated with described ozonator by an oxygen catheter that is provided with electromagnetic valve; Be respectively equipped with electromagnetic valve on the pipeline of described air inlet and the pipeline of described air vent;

2) described gas transmission system is communicated with tee pipe fitting 1 (24) and 2 (29) two tee pipe fittings of tee pipe fitting by pipeline by an inflation vacuum two-way pump and forms; The input of described inflation vacuum two-way pump is communicated with tee pipe fitting 1 one ends, and the other end of tee pipe fitting 1 is communicated with described ozonator, and its three end is communicated with described ozone reduction device by tee pipe fitting 2; Described air inlet joins by pipeline and the two-way delivery side of pump of described inflation vacuum, and its pipeline is provided with electromagnetic valve; Described air vent is communicated with tee pipe fitting 2 by pipeline, and its pipeline is provided with a pressure limiting, exhaust solenoid valve;

One Based Intelligent Control plate is arranged in the described control room, and it is by circuit and described ozonator, gas transmission system, and ozone reduction device and the power supply module that is arranged in the described control room connect; Described Based Intelligent Control plate is provided with the CPU control device that is connected with power supply, and described CPU outfan is respectively equipped with a display device and a buzzer warning device.

2, sterilization tank according to claim 1 is characterized in that: described ozone reduction device is a piped electrical heating ozone reduction device.

3, sterilization tank according to claim 1 is characterized in that: described seal cover is provided with blocking device, is provided with one in the described sterile chamber and puts the thing web plate, and described putting between thing web plate and the described seal diaphragm left the gap; Described air intake place is provided with airstrainer.

4, sterilization tank according to claim 1, it is characterized in that: the input of described CPU joins with a described pick off and an electrical switch respectively, and the outfan of described CPU joins by photoisolator and described ozonator, described ozone reduction device, described electromagnetic valve and described pressure limiting, exhaust solenoid valve respectively.

5, according to claim 1 or 2 or 3 or 4 described sterilization tanks, it is characterized in that: described CPU one has the single-chip microcomputer of microcomputerized control, and described display device is one 8 hop count sign indicating number display; Store operation sequence in the described single-chip microcomputer, the CPU processor sends signal, and described photoisolator received signal inputs to described electromagnetic valve respectively, described pressure limiting, exhaust solenoid valve, described ozonator and described ozone reduction device.

6, sterilization tank according to claim 5 is characterized in that: described pick off is two, is respectively pressure transducer and vacuum transducer, and it is arranged between described air vent one side or described air inlet and the described air vent.

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