A negative pressure system for microbial aerosol chamber operation room

Abstract

The utility model provides a negative pressure system for a microbial aerosol chamber operation room, including: an operation room, a buffer room, a dressing room, a fresh air fan and an exhaust filter box, the fresh air fan is connected to the fresh air inlet of the operation room through a fresh air duct, the exhaust port of the operation room is connected to the exhaust filter box through an exhaust duct, the operation room and the buffer room are connected through a first ventilation duct, a buffer room control valve and a buffer room fan are installed on the first ventilation duct, the buffer room and the dressing room are connected through a second ventilation duct, a dressing room control valve and a dressing room fan are installed on the second ventilation duct, and a microbial aerosol chamber is installed in the operation room. The utility model has a simple structure and a reasonable design, and can make the pressure of the microbial aerosol chamber relative to the operation room, the buffer room and the dressing room all negative pressure, prevent microorganisms from leaking and endangering the health of the staff, and through the design of the fresh air system and the exhaust system, ensure the formation of safe fresh air compensation and non-polluting exhaust.

Description

Technical Field

[0001] The utility model relates to a negative pressure system, in particular to a negative pressure system for a microbial aerosol cabin operating room. Background Art

[0002] As people's environmental awareness increases, they pay more and more attention to the air quality of their living space. The current air purifiers are not limited to filtering particulate matter in the air, but more attention is paid to whether the air purifier can disinfect microorganisms such as bacteria and viruses in the air. Therefore, many manufacturers need to conduct microbial tests on the air purifiers they produce. When filling the microorganisms in the microbial aerosol cabin, due to the airtightness of the microbial aerosol cabin or improper operation, the microorganisms in the microbial aerosol cabin may leak out of the operating room or even the laboratory outside, endangering the health of laboratory personnel. Utility Model Content

[0003] In view of the shortcomings of the prior art, the utility model proposes a negative pressure system for the microbial aerosol cabin operation room, which can make the pressure of the microbial aerosol cabin negative pressure relative to the operation room, buffer room and changing room, thereby preventing microbial leakage from polluting the operation room space, buffer room and changing room and endangering the health of the staff. In addition, through the design of the fresh air system and the exhaust system, safe fresh air compensation and pollution-free exhaust are ensured.

[0004] To achieve the above technical solution, the utility model provides a negative pressure system for a microbial aerosol cabin operation room, comprising: an operation room, a buffer room, a dressing room, a fresh air fan and an exhaust filter box, the fresh air fan is connected to the fresh air inlet of the operation room through a fresh air duct, the fresh air duct is equipped with a first solenoid valve for the fresh air outlet of the operation room and a second solenoid valve for the fresh air outlet of the operation room, the exhaust outlet of the operation room is connected to the exhaust filter box through an exhaust duct, the exhaust duct is equipped with an exhaust solenoid valve for the operation room, the operation room is connected to the buffer room through a first ventilation duct, the first ventilation duct is equipped with a buffer room control valve and a buffer room fan, the buffer room is connected to the dressing room through a second ventilation duct, the second ventilation duct is equipped with a dressing room control valve and a dressing room fan, one or more microbial aerosol cabins are installed in the operation room, the aerosol cabin exhaust port arranged on the microbial aerosol cabin is connected to the exhaust port of the operation room through a pipeline, the aerosol cabin exhaust port solenoid valve is installed at the aerosol cabin exhaust port, and the microbial aerosol cabin is provided with an aerosol A circulation air outlet of the cabin, an aerosol cabin circulation air outlet solenoid valve is installed at the circulation air outlet of the aerosol cabin, the circulation air outlet of the aerosol cabin is connected to the air inlet of the aerosol cabin circulation purifier through a pipeline, the air outlet of the aerosol cabin circulation purifier is connected to the circulation air inlet arranged on the microbial aerosol cabin through a pipeline, an aerosol cabin circulation air inlet solenoid valve is installed at the circulation air inlet of the microbial aerosol cabin, an aerosol cabin fresh air inlet is also arranged on the microbial aerosol cabin, an aerosol cabin fresh air inlet solenoid valve is installed at the fresh air inlet of the aerosol cabin, a microbial aerosol cabin pressure monitoring gauge is installed in the microbial aerosol cabin, an operating room pressure monitoring gauge is installed in the operating room, and the pressure in the microbial aerosol cabin is set to -15Pa relative to the pressure in the operating room; a buffer room pressure monitoring gauge is installed in the buffer room, and the pressure in the microbial aerosol cabin is set to -10Pa relative to the pressure in the buffer room; a changing room pressure monitoring gauge is installed in the changing room, and the pressure in the microbial aerosol cabin is set to -5Pa relative to the pressure in the changing room.

[0005] In the above technical scheme, during actual operation, the pressure difference between the operating room and the microbial aerosol cabin is adjusted by adjusting the exhaust filter box, so that the pressure in the microbial aerosol cabin is set to -15Pa relative to the pressure in the operating room; the pressure between the buffer room and the microbial aerosol cabin is adjusted by the buffer room control valve and the buffer room fan, so that the pressure in the microbial aerosol cabin is set to -10Pa relative to the pressure in the buffer room; the pressure between the changing room and the microbial aerosol cabin is adjusted by the changing room control valve and the changing room fan, so that the pressure in the microbial aerosol cabin is set to -5Pa relative to the pressure in the changing room. The fresh air fan is used to provide fresh air to the operation room to prevent the exhaust filter box from being over-evacuated and to provide the necessary fresh air for the experimenters. The first solenoid valve and the second solenoid valve of the fresh air outlet of the operation room installed on the fresh air duct are used to adjust the fresh air compensation air volume for the operation room according to the system regulation pressure demand. The exhaust air outlet solenoid valve of the operation room installed on the exhaust duct is used to adjust the exhaust air volume for the operation room according to the system regulation pressure demand, so that the operation room, the dressing room and the buffer room can be emptied through the exhaust filter box to form a negative pressure demand. Pressure monitoring meters are installed in the operation room, buffer room, dressing room and microbial aerosol cabin to facilitate real-time monitoring and adjustment of the pressure conditions in each area.

[0006] Preferably, a high-efficiency filter and an ozone ultraviolet lamp are installed in the exhaust filter box. During actual operation, the high-efficiency filter can filter out polluted gases and microorganisms and bacteria that may exist in the exhaust air, and the ozone ultraviolet lamp can eliminate the bacteria and microorganisms filtered on the high-efficiency filter.

[0007] Preferably, a primary filter is installed in the fresh air blower to improve the cleanliness of the fresh air entering the operating room and the microbial aerosol chamber.

[0008] Preferably, a high efficiency filter and a chemical gas filter module are installed in the aerosol chamber circulation purifier to ensure that the circulating air remains clean.

[0009] The beneficial effects of the negative pressure system for the microbial aerosol cabin operation room provided by the utility model are as follows: the negative pressure system for the microbial aerosol cabin operation room has a simple structure and a reasonable design, and can make the pressure of the microbial aerosol cabin relative to the operation room, buffer room and changing room all negative pressure, and utilize the adsorption effect of negative pressure to prevent microbial leakage from causing pollution to the operation room space, buffer room and changing room, thereby endangering the health of the staff, and through the design of the fresh air system and the exhaust system, ensure the formation of safe fresh air compensation and pollution-free exhaust. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model.

[0011] In the figure: 1. Operating room; 11. Exhaust solenoid valve of operating room; 12. First solenoid valve of fresh air outlet of operating room; 13. Second solenoid valve of fresh air outlet of operating room; 14. Pressure monitoring meter of operating room; 101. Microbial aerosol chamber; 102. Solenoid valve of circulating air outlet of aerosol chamber; 103. Circulating purifier of aerosol chamber; 104. Solenoid valve of circulating air inlet of aerosol chamber; 105. Solenoid valve of fresh air inlet of aerosol chamber; 106. Solenoid valve of exhaust air outlet of aerosol chamber; 107. Pressure monitoring meter of microbial aerosol chamber; 2. Buffer room; 21. Pressure monitoring meter of buffer room; 22. Control valve of buffer room; 23. Fan of buffer room; 3. Changing room; 31. Pressure monitoring meter of changing room; 32. Control valve of changing room; 33. Fan of changing room; 4. Fresh air fan; 5. Exhaust filter box. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. All other embodiments obtained by ordinary personnel in this field without creative work are within the scope of protection of the utility model.

[0013] Embodiment: A negative pressure system for a microbial aerosol chamber operation room.

[0014] Reference Figure 1 As shown, a negative pressure system for a microbial aerosol chamber operation room comprises: an operation room 1, a buffer room 2, a changing room 3, a fresh air fan 4 and an exhaust filter box 5. The fresh air fan 4 is connected to the fresh air inlet of the operation room 1 through a fresh air duct, and the fresh air duct is equipped with a first solenoid valve 12 for the fresh air outlet of the operation room and a second solenoid valve 13 for the fresh air outlet of the operation room. During actual operation, fresh air is provided to the operation room 1 through the fresh air fan 4 to prevent the exhaust filter box 5 from being over-evacuated and to provide the required fresh air for the experimenters. The first solenoid valve 12 for the fresh air outlet of the operation room and the second solenoid valve 13 for the fresh air outlet of the operation room installed on the fresh air duct adjust the air volume of the fresh air compensation for the operation room 1 according to the system control pressure demand. A primary filter is installed in the fresh air fan 4 to improve the cleanliness of the fresh air entering the operation room 1 and the microbial aerosol chamber 101.

[0015] The exhaust port of the operating room 1 is connected to the exhaust filter box 5 through an exhaust pipe, and the exhaust pipe is equipped with an operating room exhaust port electromagnetic valve 11. In actual operation, the exhaust port electromagnetic valve 11 is used to adjust the exhaust volume of the operating room 1 according to the system control pressure requirement, so that the operating room 1, the dressing room 3 and the buffer room 2 are emptied through the exhaust filter box 5 to form a negative pressure requirement. A high-efficiency filter and an ozone ultraviolet lamp are installed in the exhaust filter box 5. In actual operation, the polluted gas and microorganisms that may exist in the exhaust air are filtered through the high-efficiency filter, and the bacteria and microorganisms filtered on the high-efficiency filter can be eliminated by the ozone ultraviolet lamp to ensure that the air discharged to the outside does not contain bacteria and microorganisms to prevent environmental pollution.

[0016] The operation room 1 and the buffer room 2 are connected by a first ventilation pipe, on which a buffer room control valve 22 and a buffer room fan 23 are installed. During actual operation, the pressure of the buffer room 2 can be adjusted by the buffer room control valve 22 and the buffer room fan 23 to meet the system setting requirements.

[0017] The buffer room 2 is connected to the dressing room 3 through a second ventilation pipe, on which a dressing room control valve 32 and a dressing room fan 33 are installed. During actual operation, the pressure in the dressing room 3 can be adjusted by the dressing room control valve 32 and the dressing room fan 33 to meet the system setting requirements.

[0018] Two parallel and spaced microbial aerosol cabins 101 are installed in the operating room 1. The aerosol cabin exhaust port arranged on the microbial aerosol cabin 101 is connected to the exhaust port of the operating room 1 through a pipeline. The aerosol cabin exhaust port is installed with an aerosol cabin exhaust port solenoid valve 106. During actual operation, the exhaust volume of the microbial aerosol cabin 101 can be controlled by the aerosol cabin exhaust port solenoid valve 106; the microbial aerosol cabin 101 is provided with an aerosol cabin circulation outlet, and the aerosol cabin circulation outlet solenoid valve 102 is installed at the aerosol cabin circulation outlet. The aerosol cabin circulation outlet and the aerosol cabin circulation purification port are connected. The air inlets of the aerosol chamber circulation purifier 103 are connected by a pipeline, and the air outlet of the aerosol chamber circulation purifier 103 is connected to the circulation air inlet set on the microbial aerosol chamber 101 through a pipeline. The circulation air inlet of the microbial aerosol chamber is equipped with an aerosol chamber circulation air inlet electromagnetic valve 104. During actual operation, the circulation air volume of the microbial aerosol chamber 101 can be controlled by the aerosol chamber circulation air outlet electromagnetic valve 102, and the circulation air is purified by the aerosol chamber circulation purifier 103. The aerosol chamber circulation purifier 103 is equipped with a high-efficiency filter and a chemical gas filtration module to ensure that the circulation air remains clean. The microbial aerosol chamber 101 is also provided with an aerosol chamber fresh air inlet, and the aerosol chamber fresh air inlet electromagnetic valve 105 is installed at the aerosol chamber fresh air inlet to accurately control the air intake of the microbial aerosol chamber 101.

[0019] A microbial aerosol cabin pressure monitoring gauge 107 is installed in the microbial aerosol cabin 1, an operating room pressure monitoring gauge 14 is installed in the operating room 1, and the pressure in the microbial aerosol cabin 101 is set to -15Pa relative to the pressure in the operating room 1; a buffer room pressure monitoring gauge 21 is installed in the buffer room 2, and the pressure in the microbial aerosol cabin 101 is set to -10Pa relative to the pressure in the buffer room 2; a changing room pressure monitoring gauge 31 is installed in the changing room 3, and the pressure in the microbial aerosol cabin 101 is set to -5Pa relative to the pressure in the changing room 3. In actual operation, the pressure difference between the operating room 1 and the microbial aerosol cabin 101 is adjusted by adjusting the exhaust filter box 5, so that the pressure in the microbial aerosol cabin 101 is set to -15Pa relative to the pressure in the operating room 1; the pressure between the buffer room 2 and the microbial aerosol cabin 101 is adjusted by the buffer room control valve 22 and the buffer room fan 23, so that the pressure in the microbial aerosol cabin 101 is set to -10Pa relative to the pressure in the buffer room 2; the pressure between the dressing room 3 and the microbial aerosol cabin 101 is adjusted by the dressing room control valve 32 and the dressing room fan 33, so that the pressure in the microbial aerosol cabin is set to -5Pa relative to the pressure in the dressing room. By making the pressure of the microbial aerosol cabin 101 negative pressure relative to the operating room 1, the buffer room 2 and the dressing room 3, the adsorption effect of the negative pressure can be used to prevent microbial leakage from causing pollution to the operating room space, the buffer room and the dressing room, endangering the health of the staff, and by designing the fresh air system and the exhaust system, it is ensured that safe fresh air compensation and exhaust air are not polluted.

[0020] The above is only a preferred embodiment of the present invention, but the present invention should not be limited to the contents disclosed in the embodiment and the drawings, so any equivalent or modification completed without departing from the spirit disclosed in the present invention shall fall within the scope of protection of the present invention.

Claims

1. A negative pressure system for a microbial aerosol chamber operation room, characterized in that include: An operating room, a buffer room, a changing room, a fresh air fan and an exhaust filter box, the fresh air fan is connected to the fresh air inlet of the operating room through a fresh air duct, the fresh air duct is equipped with a first solenoid valve for the fresh air outlet of the operating room and a second solenoid valve for the fresh air outlet of the operating room, the exhaust outlet of the operating room is connected to the exhaust filter box through an exhaust duct, the exhaust duct is equipped with an exhaust solenoid valve for the operating room, the operating room and the buffer room are connected through a first ventilation duct, the first ventilation duct is equipped with a buffer room control valve and a buffer room fan, the buffer room and the changing room are connected through a second ventilation duct, the second ventilation duct is equipped with a changing room control valve and a changing room fan, one or more microbial aerosol cabins are installed in the operating room, the aerosol cabin exhaust outlet arranged on the microbial aerosol cabin is connected to the exhaust outlet of the operating room through a pipeline, the aerosol cabin exhaust outlet is equipped with an aerosol cabin exhaust outlet solenoid valve, the microbial aerosol cabin is provided with an aerosol cabin circulation outlet, and the aerosol cabin circulation outlet is installed An aerosol cabin circulation air outlet solenoid valve is installed, the aerosol cabin circulation air outlet is connected to the air inlet of the aerosol cabin circulation purifier through a pipeline, the air outlet of the aerosol cabin circulation purifier is connected to the circulation air inlet arranged on the microbial aerosol cabin through a pipeline, the circulation air inlet of the microbial aerosol cabin is equipped with an aerosol cabin circulation air inlet solenoid valve, the microbial aerosol cabin is also equipped with an aerosol cabin fresh air inlet, the aerosol cabin fresh air inlet is equipped with an aerosol cabin fresh air inlet solenoid valve, a microbial aerosol cabin pressure monitoring gauge is installed in the microbial aerosol cabin, an operating room pressure monitoring gauge is installed in the operating room, and the pressure in the microbial aerosol cabin is set to -15Pa relative to the pressure in the operating room; a buffer room pressure monitoring gauge is installed in the buffer room, and the pressure in the microbial aerosol cabin is set to -10Pa relative to the pressure in the buffer room; a changing room pressure monitoring gauge is installed in the changing room, and the pressure in the microbial aerosol cabin is set to -5Pa relative to the pressure in the changing room.

2. The negative pressure system for the microbial aerosol chamber operation room according to claim 1, characterized in that: A high efficiency filter and an ozone ultraviolet lamp are installed in the exhaust filter box.

3. The negative pressure system for the microbial aerosol chamber operation room according to claim 1, characterized in that: A primary filter is installed in the fresh air fan.

4. The negative pressure system for the microbial aerosol chamber operation room according to claim 1, characterized in that: A high-efficiency filter and a chemical gas filtering module are installed in the aerosol chamber circulation purifier.

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