Medical ultra-clean cabin and air supply method thereof

Abstract

The medical ultra-clean cabin comprises a buffer chamber, an equipment room, a treatment room and fresh air equipment, the buffer chamber is provided with a first door opening used for communicating the buffer chamber with the outside, the first door opening is provided with an outer door used for separating the buffer chamber from the outside, and the treatment room is provided with a second door opening used for communicating the buffer chamber with the treatment room. An inner door for separating the buffer chamber from the treatment chamber is arranged at the second door opening, a first position and a second position are arranged in the treatment chamber, the inner door can move between the first position and the second position, when the inner door is at the first position, the second door opening is in a closed state, the treatment chamber is separated from the buffer chamber by the inner door, and when the inner door is at the second position, the treatment chamber is in a closed state. According to the medical treatment room, the activity range of a patient can be expanded, meanwhile, the requirement for hundred-grade cleanliness in a ward is met, and the risk that germs enter the ward when medical staff enter and exit the ward is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the field of medical equipment, in particular to a medical clean room and an air supply method thereof. Background Art

[0002] Patients with low immunity need to be in a sterile environment with a cleanliness level of 100 during treatment. Currently, the most commonly used method is to build a laminar flow bed in the ward so that the laminar flow bed is in a sterile environment with a cleanliness level of 100. However, the range of movement of this laminar flow bed is limited, and the temperature, humidity and noise control within the laminar flow bed range is weak, which is not conducive to the treatment and recovery of patients. Summary of the Invention

[0003] The purpose of the present invention is to provide a medical clean cabin that can provide a larger range of activities and ensure Class 100 cleanliness.

[0004] The technical solutions for achieving the purpose of the present invention are as follows:

[0005] A medical clean room, characterized in that it includes a buffer room, an equipment room, a treatment room, and fresh air equipment; the buffer room is provided with a first doorway for communicating with the outside world, an outer door for separating the buffer room from the outside world is provided at the first doorway; the treatment room is provided with a second doorway for communicating with the treatment room, an inner door for separating the buffer room from the treatment room is provided at the second doorway; the equipment room is provided with a third doorway for communicating with the equipment room and the buffer room, and an equipment room door for separating the buffer room from the equipment room is provided at the third doorway;

[0006] The treatment room is provided with a first air outlet for connecting the treatment room with the equipment room. The equipment room is provided with a fresh air inlet and a second air outlet. The fresh air inlet is connected to the fresh air equipment through a fresh air pipeline. The second air outlet is provided with a solenoid valve and an exhaust fan for exhausting the air in the equipment room to the outside of the equipment room.

[0007] One or more purifiers are provided in the equipment room, and the purifiers include a housing, a first air inlet provided at the lower end of the housing, and a first air outlet provided at the upper end of the housing;

[0008] The top of the treatment room is provided with a plurality of air supply installation ports, and an air supply box is installed at the air supply installation port. The air supply box includes a box body, and a second air inlet is provided on the upper surface of the box body. The second air inlet is connected to the first air outlet of the purifier through a ventilation duct, and a second air outlet is provided at the lower end of the box body;

[0009] The treatment room has a first position and a second position, and the inner door can move between the first position and the second position. When the inner door is in the first position, the second door opening is in a closed state, and the treatment room and the buffer room are separated by the inner door. When the inner door is in the second position, the second door opening is in an open state, and the treatment room and the buffer room are connected. At this time, the inner door blocks the first exhaust vent, and a gap exists between the inner door and the wall between the equipment.

[0010] Air pressure sensors and temperature sensors are installed in the buffer room, equipment room and treatment room.

[0011] After adopting the above structure, the fresh air device sends fresh air into the equipment room, the purifier sucks in the air between the equipment room for filtering and disinfection, and then discharges it from the first air outlet to the air supply box and sends it into the treatment room through the air supply box. The air in the treatment room is discharged into the equipment room through the first exhaust port and mixed with the fresh air to form a mixed gas. The purifier sucks in the mixed gas and filters and disinfects it, thereby forming an air circulation between the treatment room and the equipment. By controlling the air supply volume per unit time of the purifier to the treatment room, the air supply volume per unit time of the fresh air device to the equipment room, and the air discharge volume per unit time of the second exhaust port, the air pressure in the treatment room is greater than the air pressure in the equipment room, the air pressure in the treatment room is greater than the air pressure in the buffer room, and the air pressure in the buffer room is greater than The air pressure outside the clean cabin and the air pressure between the equipment rooms are greater than the air pressure outside the clean cabin, forming a positive pressure treatment environment in the clean cabin, and through the filtration and disinfection of the purifier, the cleanliness level of Class 100 is achieved; when the second door opening is opened, the inner door blocks the first exhaust vent, which can reduce the gas turbulence and eddy current at the exhaust vent, greatly reducing the speed at which air is discharged from the treatment room to the equipment room, reducing the speed at which the pressure difference between the treatment room and the buffer room decreases, extending the pressure release process of the treatment room, and reducing the risk of bacteria in the buffer room entering the treatment room due to excessive pressure release. The present invention can ensure the cleanliness level of Class 100 in the ward while expanding the patient's range of activities, and greatly reduces the risk of pathogens entering the ward when medical staff enter and leave the ward.

[0012] Preferably, a diffuser and a flow balancing membrane are provided from top to bottom between the second air inlet and the second air outlet in the box.

[0013] Preferably, a primary filter, a constant temperature and humidity module, a plasma generator and a filter module are sequentially arranged from bottom to top between the first air inlet and the first air outlet in the housing of the purifier.

[0014] Preferably, the constant temperature and humidity module includes a water tank, an evaporator and a fan. The water tank is arranged below the evaporator. The lower end of the fan has a fan air inlet and the upper end has a fan air outlet. The evaporator is provided with a heat exchange copper tube that can pass through the refrigerant medium or the heating medium.

[0015] Preferably, a first air guide plate is provided above the water tank, and a water collecting plate is provided below the evaporator.

[0016] Preferably, the water tank is provided with a low liquid level sensor, a water supply pipe, a high liquid level sensor, a water discharge pipe and an electric heating pipe.

[0017] Preferably, a plurality of transfer windows are provided on the wall of the treatment room, and the transfer window has a first transfer door located inside the treatment room and a second transfer door located outside the clean cabin, and a disinfection device is provided in the transfer window.

[0018] A method for supplying air to a medical clean room, including any one of the medical clean rooms described above, comprises the following steps:

[0019] S1: The outer door, inner door, and equipment room door close the first, second, and third door openings respectively, and the fresh air device delivers fresh air into the equipment room through the fresh air inlet.

[0020] S2, the purifier draws air from the equipment room into the purifier through the first air inlet, and passes through the primary filter, constant temperature and humidity module, plasma generator and filtration module in sequence, and then is discharged from the first air outlet;

[0021] S3, sent to the second air inlet through the ventilation duct and enters the box of the air supply box, forms a uniform and stable vertical laminar flow after passing through the diffuser and the flow equalizing membrane, and is output from the second air outlet to the treatment room;

[0022] S4, the air in the treatment room is discharged from the first exhaust vent to the equipment room, the fresh air is mixed with the air entering the equipment room from the treatment room through the first exhaust vent to form mixed air, and the mixed air is sucked into the purifier again to form an air circulation between the equipment room and the treatment room; at the same time, the second exhaust vent of the equipment room controls whether to discharge the air in the equipment room to the outside of the clean cabin by controlling the on and off of the solenoid valve, and adjusts the speed of the exhaust air by the speed of the exhaust fan. The air pressure sensors in the equipment room, treatment room and buffer room measure the air pressure in the equipment room, treatment room and buffer room respectively, and control the air intake of the fresh air, the air supply volume of the purifier and the exhaust speed of the second exhaust vent until the positive pressure difference of the air pressure in the treatment room relative to a standard atmospheric pressure is 45Pa-80Pa, the positive pressure difference of the air pressure in the equipment room relative to a standard atmospheric pressure is 30Pa-65Pa, and the pressure difference between the treatment room and the equipment is 5Pa-15Pa; the outer door and There is a gap between the buffer rooms. When the outer door is closed, the air leakage rate at the outer door is 0.3m / s to 0.6m / s; when the inner door is closed, there is a gap between the inner door and the buffer room, and the air leakage rate at the inner door is 0.6m / s to 1m / s; the positive pressure difference of the air pressure in the buffer room relative to a standard atmospheric pressure is 10Pa-30Pa, and the pressure difference between the treatment room and the buffer room is 15Pa-50Pa; if the air pressure in the treatment room is too low, the air intake volume per unit time of the treatment room is increased; if the air pressure in the treatment room is too high, the air intake volume per unit time of the treatment room is reduced; if the air pressure in the equipment room is too high, the fresh air intake volume per unit time of the equipment room is reduced, or the solenoid valve of the second exhaust outlet is opened and the exhaust volume per unit time of the second exhaust outlet is increased; if the air pressure in the equipment room is too low, the solenoid valve of the second exhaust outlet of the equipment room is closed, or the fresh air intake volume per unit time of the equipment room is increased, or both are performed at the same time;

[0023] S5: After the air pressure in the equipment room, treatment room, and buffer room stabilizes within the range required in step S4, the outer door is opened and the patient enters the buffer room. After closing the outer door, the inner door is opened and the patient enters the treatment room, and then the inner door is closed.

[0024] In step S5, when the inner door is opened, the inner door blocks the air entering the equipment room from the treatment room through the first air outlet.

[0025] Preferably, in the purifier, a primary filter, a constant temperature and humidity module, a plasma generator and a filter module are arranged in sequence from bottom to top between the first air inlet and the first air outlet; in step S2, after the air in the equipment room enters the purifier from the first air inlet, the air is preliminarily filtered through the outlet filter, and then the temperature and humidity of the air are adjusted by the constant temperature and humidity module, and then after disinfection and sterilization by the plasma generator, it is once again filtered through the filter module for secondary filtration, and finally discharged from the first air outlet.

[0026] Preferably, the constant temperature and humidity module includes a water tank, an evaporator and a fan, the water tank is located below the evaporator; the evaporator has a heat exchange copper tube, the water tank is equipped with an electric heating tube, a water supply tube, a low liquid level sensor, a high liquid level sensor and a water discharge tube, the low liquid level sensor is located below the high liquid level sensor, and a humidity sensor and a temperature sensor are provided at the first air outlet of the purifier; the temperature and humidity of each area are measured by temperature sensors and humidity sensors in the treatment room, buffer room and equipment room;

[0027] When the humidity in the treatment room is too high and needs to be lowered, a refrigerant medium is introduced into the heat exchange copper tube. When the air passes through the heat exchange copper tube of the evaporator, the water vapor in the air condenses on the heat exchange copper tube to form condensed water, which then drips into the water tank.

[0028] When the humidity in the treatment room is too low and needs to be increased, the electric heating pipe in the water tank heats the water in the water tank, promotes the evaporation of the water in the water tank, and increases the humidity of the air;

[0029] When the temperature in the treatment room is too high and needs to be lowered, the refrigerant medium is passed into the heat exchange copper tube to cool the air;

[0030] When the temperature in the treatment room is too low and needs to be raised, the heating medium is introduced into the heat exchange copper tube to heat the air;

[0031] When the low liquid level sensor in the water tank measures that the liquid level in the water tank is too low, the water supply pipe is opened to add water to the water tank. When the high liquid level sensor in the water tank measures that the liquid level in the water tank is too high, the water discharge pipe is opened to discharge excess water in the water tank. A water supply solenoid valve is installed on the water supply pipe, and a water discharge solenoid valve is installed on the water discharge pipe. The opening time of the water supply solenoid valve and the water discharge solenoid valve can be used to control the amount of water supplied or discharged, thereby ensuring that the water in the water tank is within a normal range. For example, when the low liquid level sensor measures that the liquid level is too low, the water supply solenoid valve is opened for 10 seconds and then closed. When the high liquid level sensor measures that the liquid level is too high, the water discharge solenoid valve is opened for 5 seconds and then closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Figure 1 It is a structural schematic diagram of the present invention.

[0034] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0035] Figure 3 This is a schematic diagram of the coordination between the equipment room and the treatment room of the present invention.

[0036] Figure 4 It is a schematic structural diagram of the air supply box of the present invention.

[0037] Figure 5 Schematic diagram of the exterior of the purifier of the present invention.

[0038] Figure 6 Schematic diagram of the interior of the purifier of the present invention.

[0039] Figure 7 This is a schematic diagram of the second door opening of the present invention.

[0040] Figure 8 This is a schematic diagram of the second door opening in the closed state of the present invention.

[0041] Figure 9 It is a schematic diagram of the second exhaust port and exhaust pipe structure of the present invention. DETAILED DESCRIPTION

[0042] like Figures 1 to 9As shown, the present invention relates to a medical cleanroom, comprising a buffer room 1, an equipment room 2, and a treatment room 3. The buffer room is provided with a first doorway 4 for communicating with the outside world, and an outer door 5 is provided at the first doorway for separating the buffer room from the outside world. The treatment room is provided with a second doorway 6 for communicating with the buffer room and the treatment room, and an inner door 7 is provided at the second doorway for separating the buffer room from the treatment room. The equipment room is provided with a third doorway 10 for communicating with the equipment room and the buffer room, and an equipment room door 11 is provided at the third doorway for separating the buffer room from the equipment room. The treatment room is provided with a first exhaust vent 12 communicating with the equipment room for discharging air from the treatment room into the equipment room. The equipment room is provided with a fresh air inlet 13 and a second exhaust vent 14, the fresh air inlet being connected to a fresh air device 15 via a fresh air pipeline 151. The second exhaust vent is provided with an exhaust duct 141, and the exhaust duct is provided with a solenoid valve 142 and an exhaust fan 143 for discharging air from the equipment room to the outside of the equipment room. One or more purifiers 16 are installed in the equipment room. The purifiers include a housing 17, a first air inlet 18 at the lower end of the housing, and a first air outlet 19 at the upper end of the housing. A primary filter 20, a constant temperature and humidity module, a plasma generator 22, and a filter module 23 are positioned between the first air inlet and the first air outlet, from bottom to top. The filter module 23 uses either a medium-efficiency filter or a high-efficiency filter. The constant temperature and humidity module includes a water tank 24, an evaporator 25, and a fan 26. The water tank is positioned below the evaporator, and the fan is positioned above the evaporator, below the water tank, or between the water tank and the evaporator. The fan has a fan inlet 27 at its lower end and a fan outlet 28 at its upper end. The evaporator is equipped with a heat exchange copper tube 29. An air conditioner is installed outside the clean room and connected to the heat exchange copper tube. The air conditioner can pass a refrigerant or heating medium into the heat exchange copper tube. A first air guide plate 30 is positioned above the water tank, and a water collecting plate 31 is positioned below the evaporator. The water tank is equipped with a low liquid level sensor 32, a water supply pipe 33, a high liquid level sensor 34, a water discharge pipe 35, and an electric heating pipe 36. The low liquid level sensor is located below the high liquid level sensor. A pressure differential sensor is installed at the first air outlet of the purifier to detect whether there is any blockage between the first air outlet and the air supply box.

[0043] like Figures 2 to 5As shown, a bed 8 is provided in the treatment room, an equipment belt 9 is provided on the wall near the head of the bed, a plurality of air supply installation ports are provided on the top of the treatment room, an air supply box is installed at the air supply installation port, the air supply box includes a box body 40, a second air inlet 41 is provided on the upper surface of the box body, the first air outlet of the purifier is provided with a diverter pipe 411, the diverter pipe has a main connecting port 412 and a plurality of branch air outlets 413, the main connecting port is connected to the first air outlet, the branch air outlet is provided with a ventilation duct 414, and the first air outlet, the second air inlet and the first air outlet of the purifier are connected through the ventilation duct 411, the lower end of the box body is provided with a second air outlet 42, and a diffuser 43 and a flow equalizing membrane 44 are provided from top to bottom between the second air inlet and the second air outlet in the box body. Through the setting of the diffuser and the flow equalizing membrane, a stable wind direction is formed, a vertical laminar flow is formed, the uniformity of the wind sent out from the air supply box is ensured, and the comfort of the patient is improved. A plurality of transfer windows 45 are provided on the wall of the treatment room. The transfer window has a first transfer door 451 located inside the treatment room and a second transfer door 452 located outside the clean room. A disinfection device is provided in the transfer window. In some embodiments, the disinfection device is an ultraviolet disinfection lamp. In some embodiments, an interlocking device is provided in the transfer window. When the first transfer door is opened, the second transfer door is locked and cannot be opened. When the second transfer door is opened, the first transfer door is locked and cannot be opened. This prevents the first transfer door and the second transfer door from being opened at the same time, causing pathogens outside the clean room to enter the treatment room. The side wall of the treatment room is also provided with a plurality of observation windows 46. In some embodiments, the glass used for the observation window is electric atomizing glass 47. Air pressure sensors and temperature sensors are installed in the buffer room, equipment room and treatment room.

[0044] like Figure 7 and Figure 8 As shown, the treatment room has a first position and a second position, and the inner door can move between the first position and the second position. When the inner door is in the first position, the second door hole is in a closed state, and the treatment room and the buffer room are separated by the inner door. When the inner door is in the second position, the second door hole is in an open state, and the treatment room and the buffer room are directly connected. At this time, the inner door blocks the first exhaust vent, and the air in the treatment room needs to pass through the gap between the inner door and the wall of the treatment room before entering the equipment room through the first exhaust vent, reducing the gas turbulence and eddy current at the first exhaust vent, greatly reducing the amount of air discharged from the treatment room to the equipment room, reducing the speed of reducing the pressure difference between the treatment room and the buffer room, prolonging the pressure release process of the treatment room, and reducing the risk of bacteria in the buffer room entering the treatment room due to excessive pressure release in the treatment room.

[0045] The present invention also includes a method for supplying air to a medical clean room, comprising the following steps:

[0046] S1: The outer door, inner door, and equipment room door close the first, second, and third door openings respectively, and the fresh air device delivers fresh air into the equipment room through the fresh air inlet.

[0047] S2, the purifier draws air from the equipment room into the purifier through the first air inlet, and passes through the primary filter, constant temperature and humidity module, plasma generator and filtration module in sequence, and then is discharged from the first air outlet;

[0048] S3, sent to the second air inlet through the ventilation duct and enters the box of the air supply box, forms a uniform and stable vertical laminar flow after passing through the diffuser and the flow equalizing membrane, and is output from the second air outlet to the treatment room;

[0049] S4, the air in the treatment room is discharged from the first exhaust vent to the equipment room, the fresh air is mixed with the air entering the equipment room from the treatment room through the first exhaust vent to form mixed air, and the mixed air is sucked into the purifier again to form an air circulation between the equipment room and the treatment room; at the same time, the second exhaust vent of the equipment room controls whether to discharge the air in the equipment room to the outside of the clean cabin by controlling the on and off of the solenoid valve, and adjusts the speed of the exhaust air by the speed of the exhaust fan. The air pressure sensors in the equipment room, treatment room and buffer room measure the air pressure in the equipment room, treatment room and buffer room respectively, and control the air intake of the fresh air, the air supply volume of the purifier and the exhaust speed of the second exhaust vent until the positive pressure difference of the air pressure in the treatment room relative to a standard atmospheric pressure is 45Pa-80Pa, the positive pressure difference of the air pressure in the equipment room relative to a standard atmospheric pressure is 30Pa-65Pa, and the pressure difference between the treatment room and the equipment is 5Pa-15Pa; the outer door and There is a gap between the buffer rooms. When the outer door is closed, the air leakage rate at the outer door is 0.3m / s to 0.6m / s; when the inner door is closed, there is a gap between the inner door and the buffer room, and the air leakage rate at the inner door is 0.6m / s to 1m / s; the positive pressure difference of the air pressure in the buffer room relative to a standard atmospheric pressure is 10Pa-30Pa, and the pressure difference between the treatment room and the buffer room is 15Pa-50Pa; if the air pressure in the treatment room is too low, the air intake volume per unit time of the treatment room is increased; if the air pressure in the treatment room is too high, the air intake volume per unit time of the treatment room is reduced; if the air pressure in the equipment room is too high, the fresh air intake volume per unit time of the equipment room is reduced, or the solenoid valve of the second exhaust outlet is opened and the exhaust volume per unit time of the second exhaust outlet is increased; if the air pressure in the equipment room is too low, the solenoid valve of the second exhaust outlet of the equipment room is closed, or the fresh air intake volume per unit time of the equipment room is increased, or both are performed at the same time;

[0050] S5: After the air pressure in the equipment room, treatment room, and buffer room stabilizes within the range required in step S4, the outer door is opened and the patient enters the buffer room. After closing the outer door, the inner door is opened and the patient enters the treatment room, and then the inner door is closed.

[0051] In step S5, when the inner door is opened, the inner door blocks the air entering the equipment room from the treatment room through the first exhaust port, reduces the gas turbulence and eddy current at the first exhaust port, reduces the amount of air discharged from the treatment room to the equipment room, reduces the speed at which the pressure difference between the treatment room and the buffer room decreases, prolongs the pressure release process of the treatment room, and reduces the risk of bacteria in the buffer room entering the treatment room due to excessive pressure release.

[0052] In the purifier, a primary filter, a constant temperature and humidity module, a plasma generator and a filter module are arranged in sequence from bottom to top between the first air inlet and the first air outlet. The filter module is a medium efficiency filter or a high efficiency filter. In step S2, after the air in the equipment room enters the purifier from the first air inlet, the air is preliminarily filtered through the outlet filter, and then the temperature and humidity of the air are adjusted by the constant temperature and humidity module. After disinfection and sterilization by the plasma generator, the air is once again filtered through the filter module for secondary filtration, and finally discharged from the first air outlet.

[0053] The constant temperature and humidity module includes a water tank, an evaporator and a fan. The water tank is located below the evaporator. The fan can be located upwind of the evaporator, below the water tank, or between the water tank and the evaporator. The evaporator has a heat exchange copper tube, and the water tank has an electric heating tube, a water supply tube, a low liquid level sensor, a high liquid level sensor and a drain pipe. The low liquid level sensor is located below the high liquid level sensor. A humidity sensor and a temperature sensor are provided at the first air outlet of the purifier.

[0054] When the humidity of the air needs to be reduced, the refrigerant medium is introduced into the heat exchange copper tube. When the air passes through the heat exchange copper tube of the evaporator, the water vapor in the air condenses on the heat exchange copper tube to form condensed water, which then drips into the water tank.

[0055] When the humidity of the air needs to be increased, the electric heating pipe in the water tank heats the water in the water tank, promotes the evaporation of the water in the water tank, and increases the humidity of the air;

[0056] When the air temperature needs to be lowered, the refrigerant medium is passed through the heat exchange copper tube to cool the air;

[0057] When the air temperature needs to be increased, the heating medium is introduced into the heat exchange copper tube to heat the air.

[0058] When the low liquid level sensor in the water tank measures that the liquid level in the water tank is too low, the water supply pipe is opened to add water to the water tank. When the high liquid level sensor in the water tank measures that the liquid level in the water tank is too high, the water discharge pipe is opened to discharge excess water in the water tank. A water supply solenoid valve is installed on the water supply pipe, and a water discharge solenoid valve is installed on the water discharge pipe. The opening time of the water supply solenoid valve and the water discharge solenoid valve can be used to control the amount of water supplied or discharged, thereby ensuring that the water in the water tank is within a normal range. For example, when the low liquid level sensor measures that the liquid level is too low, the water supply solenoid valve is opened for 10 seconds and then closed. When the high liquid level sensor measures that the liquid level is too high, the water discharge solenoid valve is opened for 5 seconds and then closed.

[0059] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. Medical clean room, characterized by: The equipment room comprises a buffer room, an equipment room, a treatment room and a fresh air device. The buffer room is provided with a first door hole for communicating with the outside world, and an outer door for separating the buffer room from the outside world is provided at the first door hole. The treatment room is provided with a second door hole for communicating with the treatment room, and an inner door for separating the buffer room from the treatment room is provided at the second door hole. The equipment room is provided with a third door hole for communicating with the equipment room and the buffer room, and an equipment room door for separating the buffer room from the equipment room is provided at the third door hole. The treatment room is provided with a first air outlet for connecting the treatment room with the equipment room. The equipment room is provided with a fresh air inlet and a second air outlet. The fresh air inlet is connected to the fresh air equipment through a fresh air pipeline. The second air outlet is provided with a solenoid valve and an exhaust fan for exhausting the air in the equipment room to the outside of the equipment room. One or more purifiers are provided in the equipment room, and the purifiers include a housing, a first air inlet provided at the lower end of the housing, and a first air outlet provided at the upper end of the housing; The top of the treatment room is provided with a plurality of air supply installation ports, and an air supply box is installed at the air supply installation port. The air supply box includes a box body, and a second air inlet is provided on the upper surface of the box body. The second air inlet is connected to the first air outlet of the purifier through a ventilation duct, and a second air outlet is provided at the lower end of the box body; The treatment room has a first position and a second position, and the inner door can move between the first position and the second position. When the inner door is in the first position, the second door opening is in a closed state, and the treatment room and the buffer room are separated by the inner door. When the inner door is in the second position, the second door opening is in an open state, and the treatment room and the buffer room are connected. At this time, the inner door blocks the first exhaust vent, and a gap exists between the inner door and the wall between the equipment. Air pressure sensors and temperature sensors are installed in the buffer room, equipment room and treatment room.

2. The medical clean room according to claim 1, characterized in that: A diffuser and a flow balancing membrane are arranged from top to bottom between the second air inlet and the second air outlet in the box.

3. The medical clean room according to claim 1, characterized in that: A primary filter, a constant temperature and humidity module, a plasma generator and a filter module are sequentially arranged between the first air inlet and the first air outlet in the shell of the purifier from bottom to top.

4. The medical clean room according to claim 3, characterized in that: The constant temperature and humidity module includes a water tank, an evaporator and a fan. The water tank is arranged below the evaporator. The lower end of the fan has a fan air inlet and the upper end has a fan air outlet. The evaporator is provided with a heat exchange copper tube that can pass through the refrigerant medium or the heating medium.

5. The medical clean room according to claim 4, characterized in that: A first air guide plate is arranged above the water tank, and a water collecting plate is arranged below the evaporator.

6. The medical clean room according to claim 4, characterized in that: The water tank is provided with a low liquid level sensor, a water supply pipe, a high liquid level sensor, a water discharge pipe and an electric heating pipe.

7. The medical clean room according to claim 1, characterized in that: A plurality of transfer windows are arranged on the wall of the treatment room. The transfer windows have a first transfer door located inside the treatment room and a second transfer door located outside the clean cabin. A disinfection device is arranged inside the transfer windows.

8. The air supply method for the medical clean room is characterized by: The medical clean room according to any one of claims 1 to 8 comprises the following steps: S1: The outer door, inner door, and equipment room door close the first, second, and third door openings respectively, and the fresh air device delivers fresh air into the equipment room through the fresh air inlet. S2, the purifier draws air from the equipment room into the purifier through the first air inlet, and passes through the primary filter, constant temperature and humidity module, plasma generator and filtration module in sequence, and then is discharged from the first air outlet; S3, sent to the second air inlet through the ventilation duct and enters the box of the air supply box, forms a uniform and stable vertical laminar flow after passing through the diffuser and the flow equalizing membrane, and is output from the second air outlet to the treatment room; S4, the air in the treatment room is discharged from the first exhaust vent to the equipment room, the fresh air is mixed with the air entering the equipment room from the treatment room through the first exhaust vent to form mixed air, and the mixed air is sucked into the purifier again to form an air circulation between the equipment room and the treatment room; at the same time, the second exhaust vent of the equipment room controls whether to discharge the air in the equipment room to the outside of the clean cabin by controlling the on and off of the solenoid valve, and adjusts the speed of the exhaust air by the speed of the exhaust fan. The air pressure sensors in the equipment room, treatment room and buffer room measure the air pressure in the equipment room, treatment room and buffer room respectively, and control the air intake of the fresh air, the air supply volume of the purifier and the exhaust speed of the second exhaust vent until the positive pressure difference of the air pressure in the treatment room relative to a standard atmospheric pressure is 45Pa-80Pa, the positive pressure difference of the air pressure in the equipment room relative to a standard atmospheric pressure is 30Pa-65Pa, and the pressure difference between the treatment room and the equipment is 5Pa-15Pa; the outer door and There is a gap between the buffer rooms. When the outer door is closed, the air leakage rate at the outer door is 0.3m / s to 0.6m / s; when the inner door is closed, there is a gap between the inner door and the buffer room, and the air leakage rate at the inner door is 0.6m / s to 1m / s; the positive pressure difference of the air pressure in the buffer room relative to a standard atmospheric pressure is 10Pa-30Pa, and the pressure difference between the treatment room and the buffer room is 15Pa-50Pa; if the air pressure in the treatment room is too low, the air intake volume per unit time of the treatment room is increased; if the air pressure in the treatment room is too high, the air intake volume per unit time of the treatment room is reduced; if the air pressure in the equipment room is too high, the fresh air intake volume per unit time of the equipment room is reduced, or the solenoid valve of the second exhaust outlet is opened and the exhaust volume per unit time of the second exhaust outlet is increased; if the air pressure in the equipment room is too low, the solenoid valve of the second exhaust outlet of the equipment room is closed, or the fresh air intake volume per unit time of the equipment room is increased, or both are performed at the same time; S5: After the air pressure in the equipment room, treatment room, and buffer room stabilizes within the range required in step S4, the outer door is opened and the patient enters the buffer room. After closing the outer door, the inner door is opened and the patient enters the treatment room, and then the inner door is closed. In step S5, when the inner door is opened, the inner door blocks the air entering the equipment room from the treatment room through the first air outlet.

9. The air supply method for a medical clean cabin according to claim 8, characterized in that: In the purifier, a primary filter, a constant temperature and humidity module, a plasma generator and a filter module are arranged in sequence from bottom to top between the first air inlet and the first air outlet; in step S2, after the air in the equipment room enters the purifier from the first air inlet, the air is preliminarily filtered through the outlet filter, and then the temperature and humidity of the air are adjusted by the constant temperature and humidity module, and then after disinfection and sterilization by the plasma generator, it is once again filtered through the filter module for secondary filtration, and finally discharged from the first air outlet.

10. The air supply method for a medical clean cabin according to claim 9, characterized in that: The constant temperature and humidity module includes a water tank, an evaporator, and a fan. The water tank is located below the evaporator. The evaporator has a heat exchange copper tube. The water tank is equipped with an electric heating tube, a water supply tube, a low liquid level sensor, a high liquid level sensor, and a water discharge tube. The low liquid level sensor is located below the high liquid level sensor. A humidity sensor and a temperature sensor are provided at the first air outlet of the purifier. The temperature and humidity of each area are measured by temperature sensors and humidity sensors in the treatment room, buffer room, and equipment room. When the humidity in the treatment room is too high and needs to be lowered, a refrigerant medium is introduced into the heat exchange copper tube. When the air passes through the heat exchange copper tube of the evaporator, the water vapor in the air condenses on the heat exchange copper tube to form condensed water, which then drips into the water tank. When the humidity in the treatment room is too low and needs to be increased, the electric heating pipe in the water tank heats the water in the water tank, promotes the evaporation of the water in the water tank, and increases the humidity of the air; When the temperature in the treatment room is too high and needs to be lowered, the refrigerant medium is passed into the heat exchange copper tube to cool the air; When the temperature in the treatment room is too low and needs to be raised, the heating medium is introduced into the heat exchange copper tube to heat the air; When the low liquid level sensor in the water tank measures that the liquid level in the water tank is too low, the water supply pipe is opened to add water to the water tank. When the high liquid level sensor in the water tank measures that the liquid level in the water tank is too high, the water discharge pipe is opened to discharge excess water in the water tank. A water supply solenoid valve is installed on the water supply pipe, and a water discharge solenoid valve is installed on the water discharge pipe. The opening time of the water supply solenoid valve and the water discharge solenoid valve can be used to control the amount of water supplied or discharged, thereby ensuring that the water in the water tank is within a normal range. For example, when the low liquid level sensor measures that the liquid level is too low, the water supply solenoid valve is opened for 10 seconds and then closed. When the high liquid level sensor measures that the liquid level is too high, the water discharge solenoid valve is opened for 5 seconds and then closed.

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