VHP disinfection room control system with single fan running

Abstract

The utility model provides a single fan operation VHP disinfection room control system, which comprises a fan, a pipeline device, a generator device and a control valve device, the pipeline device is arranged on two sides of the fan, the control valve device is arranged on the pipeline device, the pipeline device comprises an input pipe, an output pipe and a circulating pipe, the input pipe is communicated with an air inlet of a disinfection room, and the output pipe is communicated with an air outlet of the disinfection room. The output pipe is communicated to an air outlet of the disinfection room, one end of the circulating pipe is connected to the output pipe, the other end of the circulating pipe is communicated to an air inlet of the disinfection room, the fan is installed on the output pipe, and the control valve device comprises electric closed air valves installed on the input pipe, the output pipe and the circulating pipe. Operation switching of disinfection circulation disinfection and air exhaust is achieved on the premise that only a single fan needs to be arranged, the number of the fans is reduced, and the operation cost of the disinfection system is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of disinfection, especially a VHP disinfection room control system of single fan operation. BACKGROUND

[0002] In the production process of medicines, some articles entering the clean production area need to be treated in the VHP disinfection room, and the gas flow in the disinfection room needs to be kept in the normal pressure state, while pollution to outdoor air also needs to be avoided, such as a workshop disinfection system and disinfection method disclosed in patent No. CN117267841A, which specifically discloses that a gas driving system and a disinfection system are controlled by using a blower fan and an exhaust fan respectively, and the clean area space environment and the air conditioning system are disinfected, specifically, the fresh air pipeline, the exhaust pipeline electric air valve is closed, the return air pipeline electric air valve is opened, the blower fan and the disinfection equipment are started to disinfect the cycle, after meeting the disinfection standard, the blower fan is stopped, the return air pipeline electric air valve is closed, the fresh air pipeline and the exhaust pipeline electric air valve are opened, the blower fan is started first, and then the exhaust fan is started, switched to the full fresh air state, the air after disinfection is replaced, the disinfection residues are discharged, and until the indoor air meets the quality requirement of the clean area. When the above-mentioned disinfection system is used, since the power of the blower fan and the exhaust fan is similar, one needs to be opened and the other needs to be closed when switching, the opening and closing of the fan requires the maximum power in the fan operation process, and is also the most time-consuming process, and the rotation of the two fans leads to the increase of the operation cost of the disinfection system. SUMMARY

[0003] The utility model solves the technical problem that the operation cost of the existing disinfection system is too high during operation.

[0004] The utility model adopts the technical scheme that a VHP disinfection room control system of single fan operation, including the fan, the pipeline device of installing at the both sides of fan, generator device and setting on the pipeline device control valve device, the pipeline device includes input pipe, output pipe and circulation pipe, the input pipe is linked to the air inlet of disinfection room, the output pipe is linked to the air outlet of disinfection room, one end of circulation pipe is connected to the output pipe, the other end of circulation pipe is linked to the air inlet of disinfection room, the fan is installed on the output pipe, the control valve device includes the electric airtight air valve of installing on the input pipe, the output pipe and the circulation pipe.

[0005] Further, the generator device includes a VHP generator installed in the disinfection room, and the VHP generator can spray atomized hydrogen peroxide solution into the disinfection room.

[0006] Further, the generator device further comprises a differential pressure sensor installed in the sterilization room, and the control valve device comprises a variable air volume regulating valve installed on the output pipe, and the differential pressure sensor and the variable air volume regulating valve are electrically connected.

[0007] Further, the control valve device further comprises a constant air volume regulating valve installed on the input pipe, and the constant air volume regulating valve controls the constant air flow rate in the input pipe.

[0008] Further, the generator device comprises a filter box installed on the output pipe and a filter membrane inserted in the filter box, the filter box is shaped according to the shape of the output pipe, the output pipe is divided into two parts, and the two parts of the output pipe are covered on two sides of the filter box, a filter hole is formed on the side of the filter box facing the fan, the output pipe covers the filter hole, and the filter membrane is arranged in parallel to the filter hole.

[0009] Further, a flange plate is fixedly installed on the side of the filter box facing the outdoor, and the filter box is sealingly and fixedly installed on the output pipe through the flange plate.

[0010] Further, clamping protrusions are installed in the filter box, the filter membrane is provided with clamping strips, and the clamping strips can be inserted between the clamping protrusions.

[0011] Further, the generator device further comprises a sealing strip installed on the filter box and capable of being adjusted, a sealing groove is formed on the filter box for the filter membrane to enter and exit, and the sealing strip is detachably embedded in the sealing groove.

[0012] The fan is installed on the output pipe, and under the action of the fan, there is a flow difference between the input pipe and the output pipe, the pressure in the sterilization room is changed, the air in the sterilization room flows and maintains a normal pressure state, and when disinfection is needed, only the electric sealing air valve on the input pipe and the output pipe needs to be closed, and the electric sealing air valve on the circulating pipe needs to be opened, and under the premise that the fan does not stop, the switching between the circulating disinfection in the sterilization room and the normal indoor pressure maintaining mode is completed, so that the fan is continuously started and stopped, and the operation cost of the disinfection system is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model is further explained in connection with the drawings and embodiments.

[0014] Figure 1 is the flow chart of the VHP sterilization room control system of the utility model;

[0015] Figure 2 is Figure 1 is the assembly perspective view of the generator device in the middle part.

[0016] Figure 3 is an exploded perspective view of the generator device shown in Figure 2 ;

[0017] Figure 4 is a right view of the generator device shown in Figure 2 ;

[0018] Figure 5 is a sectional view along A-A in the generator device shown in Figure 4 ;

[0019] Figure 6 is a perspective view of another embodiment of the generator device shown in Figure 2 ;

[0020] In the figure: fan 10, duct device 20, generator device 30, control valve device 40, input pipe 210, output pipe 220, circulation pipe 230, VHP generator 340, differential pressure sensor 350, constant air volume regulating valve 410, variable air volume regulating valve 420, electric airtight air valve 430, filter box 310, filter membrane 320, sealing strip 330, flange plate 311, clamping protrusion 312, clamping strip block 321, sealing groove 313. DETAILED DESCRIPTION

[0021] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.

[0022] As shown in Figures 1 to 6 , the present application provides a single-fan-operated VHP sterilization room control system, comprising a fan 10, duct devices 20 installed on both sides of the fan 10, a generator device 30 and a control valve device 40 arranged on the duct device 20.

[0023] As shown in Figure 1As shown, the fan 10 is arranged in the middle of the duct device 20, and the fan 10 controls the flow of air in the duct device 20. Specifically, the duct device 20 includes an input pipe 210, an output pipe 220, and a circulation pipe 230. The input pipe 210 is connected to the air inlet of the sterilization room, the output pipe 220 is connected to the air outlet of the sterilization room, and the fan 10 is installed on the output pipe 220. When the fan 10 is started, the gas in the sterilization room keeps flowing out. To avoid the phenomenon of indoor pressure being too low, the input pipe 210 injects maintenance gas into the sterilization room, thereby maintaining the air pressure in the sterilization room. One end of the circulation pipe 230 is connected to the air inlet of the sterilization room, and the other end of the circulation pipe 230 is connected to the discharge direction of the fan 10. When the fan 10 is started, the circulation pipe 230 and the output pipe 220 form a circulating flow structure, so that the sterilization gas in the sterilization room circulates and flows, achieving the best sterilization effect.

[0024] The generator device 30 includes a VHP generator 340 installed in the sterilization room and a differential pressure sensor 350. When the VHP generator 340 is started in the sterilization room, it can generate hydrogen peroxide solution, and spray the hydrogen peroxide solution in multiple directions in the form of atomization, so that the indoor space is filled with hydrogen peroxide solution spray, thereby fully sterilizing the indoor space. The circulating air duct formed by the fan 10 and the circulation pipe 230 can continuously sterilize the indoor space in a reciprocating manner. After sterilization is completed, the fan 10 can be used to discharge the hydrogen peroxide solution spray in the indoor space and exhaust it through the output pipe 220. The differential pressure sensor 350 is a sensor for detecting the air pressure in the room. The differential pressure sensor 350 can detect the pressure in the room in real time, and adjust the flow rate difference between the input pipe 210 and the output pipe 230 according to the detection result, thereby maintaining the constant pressure in the room.

[0025] The control valve device 40 includes a constant air volume regulating valve 410 installed on the input pipe 210, a variable air volume regulating valve 420 installed on the output pipe 220, and an electrically sealed air valve 430 installed on the input pipe 210, the output pipe 220, and the circulation pipe 230.

[0026] The constant air volume regulating valve 410 and the variable air volume regulating valve 420 are both controllable closed air valves, which are controlled to quantitatively compress the area of the pipe section, and then control the flow rate of the gas in the pipe. The constant air volume regulating valve 410 and the variable air volume regulating valve 420 are selected according to the pipe diameter, the constant air volume regulating valve 410 is fixed after completing the regulation, to ensure the constant flow rate in the input pipe 210, and the variable air volume regulating valve 420 can be adjusted at any time according to the need to limit the flow rate of the gas in the output pipe 220. Preferably, the variable air volume regulating valve 420 is electrically connected with the differential pressure sensor 350, and the detection result of the differential pressure sensor 350 is fed back to the variable air volume regulating valve 420, to ensure the constant indoor pressure, and the variable air volume regulating valve 420 is adjusted in real time. The electric closed air valve 430 can control the opening and closing of the input pipe 210, the output pipe 220 and the circulation pipe 230, that is, according to the two needs of maintaining the normal pressure in the room and the state of air flow and the disinfection circulation state, the electric closed air valve 430 is used to open and close the input pipe 210, the output pipe 220 and the circulation pipe 230.

[0027] As shown in Figures 1 to 5 The generator device 30 further comprises a filter box 310 installed on the output pipe 220, a filter membrane 320 inserted into the filter box 310, and a sealable strip 330 adjustably installed on the filter box 310.

[0028] As shown in Figure 3 and Figure 5As shown, the filter box 310 is fixedly installed at the middle position of the output pipe 220. Specifically, the output pipe 220 is divided into two parts, which are respectively covered on both sides of the filter box 310. The side of the filter box 310 facing the fan 10 is provided with a filter hole, and the output pipe 220 covers the filter hole. The side of the filter box 310 facing the outdoor is fixedly installed with a flange plate 311. The filter box 310 is sealed and fixedly installed on the air outlet direction of the output pipe 220 through the flange plate 311. The filter box 310 can be circular or square, and is selected according to the shape of the output pipe 220. In this embodiment, the filter box 310 is not limited. The filter box 310 is internally provided with clamping protrusions 312. The two clamping protrusions 312 are both in strip shape and are arranged along the inner wall of the filter box 310. The clamping protrusions 312 are symmetrically arranged side by side. The filter membrane 320 is provided with clamping strip blocks 321 at the edges. The clamping strip blocks 321 can be inserted between the clamping protrusions 312. Under the blockage of the clamping protrusions 312, the clamping strip blocks 321 and the filter membrane 320 are fixed in the filter box 310 in parallel to the filter hole. The filter box 310 is provided with a sealing groove 313. The sealing groove 313 is arranged between the two clamping protrusions 312. The sealing strip 330 is detachably embedded in the sealing groove 313. When the sealing strip 330 blocks the sealing groove 313, the sealing groove 313 of the filter box 310 for replacing the filter membrane 320 is completely sealed, so that the airflow in the output pipe 220 can only pass through the filter hole. The blockage of the sealing groove 313 by the sealing strip 330 can avoid aerosol leakage at the filter box 310.

[0029] Preferably, the sealing groove 313 is further connected to the other side wall of the filter box 310. The sealing strip 330 can be inserted from one side of the filter box 310 and slide along the sealing groove 313 to block the filter box 310.

[0030] As shown, Figure 6 In other embodiments, the sealing strip 330 can also be hinged to the tail of the sealing groove 313, that is, the insertion sealing is replaced by the rotation sealing. The end of the sealing strip 330 away from the hinge point is magnetically attracted or pin pressed. When the filter membrane 320 is inserted between the clamping protrusions 312 through the sealing groove 313, the sealing strip 330 is rotated around the tail of the sealing groove 313 until the sealing strip 330 is embedded in the sealing groove 313, and the filter box 310 is blocked.

[0031] The method for using the single-fan VHP sterilization room control system is as follows: the electric sealing air valve 430 on the circulation pipe 230 is closed, the electric sealing air valve 430 on the input pipe 210 and the output pipe 220 is opened, the air in the room is discharged outwards by the output pipe 220 under the control of the fan 10, the air flow is input into the laboratory through the input pipe 210 to maintain the normal pressure state, and the input flow of the input pipe 210 is lower than the discharge flow of the output pipe 220 under the block of the constant air volume regulating valve 410 until the detection data of the pressure difference sensor 350 reaches the set standard, in order to maintain the detection index of the pressure difference sensor 350, the variable air volume regulating valve 420 is controlled in real time, that is, the output flow of the output pipe 220 is adjusted in real time, and the pressure in the laboratory is controlled by using the flow difference.

[0032] Before sterilization, the sealing strip 330 on the filter box 310 is removed from the sealing groove 313, the filter membrane 320 between the two clamping protrusions 312 is removed, a new filter membrane 320 is replaced, the VHP generator 340 is started, the VHP generator 340 sprays the atomized hydrogen peroxide solution in the laboratory, then the electric sealing air valve 430 on the input pipe 210 and the output pipe 220 is closed, the electric sealing air valve 430 on the circulation pipe 230 is opened, and the hydrogen peroxide solution is sprayed through the output pipe 220 and the circulation pipe 230 and then reenters the laboratory under the action of the fan 10, so that the laboratory is sterilized comprehensively through the circulation and repetition, the hydrogen peroxide solution mixes and carries the aerosol formed by the killed microorganisms, part of the harmful aerosol is filtered and retained when passing through the filter membrane 320, so that the harm is avoided from spreading. When the sterilization time reaches, the electric sealing air valve 430 on the circulation pipe 230 is closed, the electric sealing air valve 430 on the input pipe 210 and the output pipe 220 is opened, and the hydrogen peroxide solution spray and the air in the laboratory are discharged to the designated position through the output pipe 220 under the continuous output of the fan 10. Since the same fan is used in the sterilization mode and the gas keeping flow normal pressure mode, only the electric sealing air valve 430 is controlled to be opened and closed, so that the cost of starting and stopping the air conditioner is reduced, and the sterilization efficiency is improved.

[0033] Based on the above ideal embodiments of the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content in the specification, and must be determined according to the scope of claims.

Claims

1. A VHP disinfection room control system operating with a single fan, characterized in that: The device includes a fan (10), a pipe assembly (20) installed on both sides of the fan (10), a generator assembly (30), and a control valve assembly (40) installed on the pipe assembly (20). The pipe assembly (20) includes an input pipe (210), an output pipe (220), and a circulation pipe (230). The input pipe (210) is connected to the air inlet of the disinfection room, the output pipe (220) is connected to the air outlet of the disinfection room, one end of the circulation pipe (230) is connected to the output pipe (220), and the other end of the circulation pipe (230) is connected to the air inlet of the disinfection room. The fan (10) is installed on the output pipe (220). The control valve assembly (40) includes an electrically sealed air valve (430) installed on the input pipe (210), the output pipe (220), and the circulation pipe (230).

2. The VHP disinfection room control system with single-fan operation according to claim 1, characterized in that: The generator device (30) includes a VHP generator (340) installed in the disinfection room, which can spray atomized hydrogen peroxide solution into the disinfection room.

3. The VHP disinfection room control system with single-fan operation according to claim 1, characterized in that: The generator device (30) also includes a differential pressure sensor (350) installed in the disinfection room, and the control valve device (40) includes a variable air volume regulating valve (420) installed on the output pipe (220). The differential pressure sensor (350) and the variable air volume regulating valve (420) are electrically connected.

4. The VHP disinfection room control system with single-fan operation according to claim 1, characterized in that: The control valve device (40) further includes a constant air volume regulating valve (410) installed on the input pipe (210), which controls the gas in the input pipe (210) to ensure a constant flow rate.

5. A VHP disinfection room control system operating with a single fan according to claim 1, characterized in that: The generator device (30) includes a filter box (310) installed on the output pipe (220) and a filter membrane (320) inserted in the filter box (310). The shape of the filter box (310) is selected according to the shape of the output pipe (220). The output pipe (220) is divided into two parts, and both parts of the output pipe (220) are covered on both sides of the filter box (310). The filter box (310) has a filter hole on the side facing the fan (10). The output pipe (220) covers the filter hole. The filter membrane (320) is arranged parallel to the filter hole.

6. The VHP disinfection room control system with single-fan operation according to claim 5, characterized in that: A flange (311) is fixedly installed on the outdoor side of the filter box (310), and the filter box (310) is sealed and fixedly installed on the output pipe (220) by the flange (311).

7. A VHP disinfection room control system operating with a single fan according to claim 5, characterized in that: The filter box (310) is equipped with two clamping protrusions (312). The filter membrane (320) is provided with clamping strips (321) on its edge. The clamping strips (321) can be inserted between the clamping protrusions (312).

8. A VHP disinfection room control system operating with a single fan according to claim 5, characterized in that: The generator device (30) also includes an adjustable sealing strip (330) mounted on the filter box (310), the filter box (310) having a sealing groove (313) for the filter membrane (320) to enter and exit, and the sealing strip (330) being detachably fitted into the sealing groove (313).

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