A compact single-person negative pressure chamber

Abstract

This application relates to a compact single-person negative pressure chamber, specifically concerning the spatial structure of a negative pressure isolation chamber. It includes a chamber for negative pressure isolation, a first compartment for installing a control module, and a second compartment for installing a negative pressure module. The first and second compartments are vertically layered and separated from the main chamber. The second compartment is located at the bottom, and the first compartment is located above it. A solenoid valve and a vacuum filter are installed in the first compartment, with the solenoid valve connected to the vacuum filter. The second compartment contains a first air inlet pipe, an exhaust pipe, and a vacuum pump for establishing negative pressure. One end of the first air inlet pipe is connected to the vacuum filter, and the other end is connected to the main chamber. The exhaust pipe is connected to the main chamber, and one end of the vacuum pump is connected to the exhaust pipe, and the other end is connected to the outside. This application optimizes the spatial layout of the negative pressure chamber, improving its space utilization.

Description

Technical Field

[0001] This application relates to the technical field of negative pressure isolation chamber space structures, and in particular to a compact single-person negative pressure chamber. Background Technology

[0002] As a key piece of equipment in the medical field for the isolation of infectious diseases and negative pressure environment therapy, the core function of a single-person negative pressure chamber is to create a negative pressure environment within the chamber while providing patients with an independent treatment space. Its functionality relies on the coordinated operation of multiple systems, including negative pressure generation, environmental control, and airflow purification. Therefore, it requires various components to meet the requirements of safety, comfort, and ease of operation in the medical environment.

[0003] In existing technology, the core functions of a single-person negative pressure chamber include a vacuum pump for drawing air from the chamber to create negative pressure, a solenoid valve for dynamic adjustment of negative pressure, a vacuum filter for particulate filtration of the air, an air conditioning module for regulating the temperature and humidity inside the chamber, and a circuit module for control circuitry. When the vacuum pump starts, the solenoid valve controls the rate at which external air is drawn from the intake pipe, and the vacuum pump then expels air from the chamber. This, combined with the operation of the air conditioning module, regulates the temperature inside the chamber, achieving negative pressure generation, ambient temperature control, and airflow purification.

[0004] Regarding the aforementioned technologies, because each component independently occupies the horizontal space surrounding the cabin, and the required spacing for pipeline connections is necessary, the horizontal projected area of ​​the entire cabin increases significantly, resulting in a larger overall volume of the single-person negative pressure cabin. This severely limits the deployment flexibility and space utilization of the equipment. Furthermore, the distributed layout leads to complex pipelines, increasing the difficulty of installation and commissioning, as well as the risk of interference between components, further affecting the stability and maintenance efficiency of the equipment. Utility Model Content

[0005] In view of the shortcomings of the existing technology, one of the objectives of this utility model is to provide a compact single-person negative pressure chamber.

[0006] This application provides a compact single-person negative pressure chamber, which adopts the following technical solution:

[0007] A compact single-person negative pressure chamber includes a chamber for negative pressure isolation, a first compartment for installing a control module and a filtration system, and a second compartment for installing a negative pressure module. The first and second compartments are arranged vertically in layers and are opposite to the chamber. The second compartment is located at the bottom, and the first compartment is located above the second compartment. The first compartment is equipped with a solenoid valve for dynamic adjustment of negative pressure and a vacuum filter for particulate filtration of air. The solenoid valve is connected to the vacuum filter. The second compartment is equipped with a first air inlet pipe, an exhaust pipe, and a vacuum pump for establishing negative pressure. One end of the first air inlet pipe is connected to the vacuum filter, and the other end is connected to the chamber. The exhaust pipe is connected to the chamber, and one end of the vacuum pump is connected to the exhaust pipe, and the other end is connected to the outside.

[0008] By adopting the above technical solutions, the compact single-person negative pressure chamber significantly reduces the horizontal space occupied by each module around the chamber by designing the first and second compartments in a vertically layered layout and integrating them on the outside of the chamber. This reduces the overall horizontal projected area and effectively solves the problem of the large chamber size caused by the independent installation of components. At the same time, the vertically layered structure shortens the pipeline length between the solenoid valve, vacuum filter, and vacuum pump, reduces pipeline crossing and entanglement, and lowers the difficulty of installation and commissioning. Furthermore, each module is independently partitioned in the vertical direction, allowing for direct maintenance of the corresponding compartment during inspection without disassembling other components, significantly improving maintenance efficiency and shortening downtime. In addition, through the linkage between the solenoid valve and the vacuum pump and the particulate filtration function of the vacuum filter, the negative pressure inside the chamber can be precisely controlled, and the cleanliness of the supplementary air can be ensured.

[0009] Preferably, the compartment is equipped with a hatch, which is designed with an outward hinge so that the opening direction of the hatch is opposite to that of the compartment, and the compartment is sealed when the hatch is closed.

[0010] By adopting the above technical solution, the cabin door adopts an outward hinged design, so that the opening direction of the cabin door is completely opposite to the cabin space. This solves the defect of the inward-opening cabin door occupying the effective space inside the cabin when it is opened. In the case of limited space inside the cabin, it avoids the problem of restricted patient movement caused by the opening of the cabin door. Especially in emergency situations, it can achieve rapid entry and exit, which greatly improves the efficiency of emergency response.

[0011] Preferably, the hatch is provided with an observation window, the edge of which is connected to a frame, and the frame is fixed to the hatch with screws.

[0012] By adopting the above technical solution, the cabin door is equipped with an observation window, which allows medical staff to clearly observe the patient's condition and the progress of medical operations inside the cabin without opening the cabin door. This avoids fluctuations in negative pressure inside the cabin caused by frequent door opening and effectively maintains the stability of the negative pressure environment.

[0013] Preferably, a pressure sensor is installed in the second compartment, and the sensing end of the pressure sensor is directly exposed inside the compartment.

[0014] By adopting the above technical solution, the pressure sensor can accurately capture the changes in air pressure inside the cabin in real time. By directly transmitting the real-time air pressure signal to the solenoid valve, it can quickly respond and dynamically adjust the suction rate and air intake, so that the negative pressure value inside the cabin is stably maintained within the set range, effectively preventing the risk of negative pressure isolation failure due to excessive pressure fluctuations.

[0015] Preferably, the end of the solenoid valve away from the vacuum filter is connected to a first silencer, the end of the first air intake pipe connected to the compartment is connected to a second silencer, and the end of the exhaust pipe connected to the compartment is connected to a third silencer.

[0016] By adopting the above technical solution, the solenoid valve, the first air intake pipe and the exhaust pipe are respectively connected to the first silencer, the second silencer and the third silencer. The noise generated by the high-speed airflow at different nodes during the operation of the negative pressure chamber is treated by regional noise reduction, which significantly reduces the interference to the rest of patients and the operation of medical staff in the chamber and improves the comfort of the medical environment.

[0017] Preferably, it also includes a third compartment, which is located below the first compartment and above the second compartment. The third compartment is equipped with a compressor and an outdoor air conditioning unit. An indoor air conditioning unit is installed inside the compartment. The indoor air conditioning unit is connected to a second air intake pipe, a return air pipe, and a drain pipe. The indoor air conditioning unit is linked to the outdoor air conditioning unit through the second air intake pipe, and the indoor air conditioning unit is linked to the compressor through the return air pipe.

[0018] By adopting the above technical solution, the third compartment of the compact single-person negative pressure cabin integrates the compressor and air conditioner outdoor unit in the vertical space below the first compartment and above the second compartment. It forms a closed-loop linkage with the air conditioner indoor unit of the cabin through the second air intake pipe and return pipe. The vertical layered layout shortens the distance between the components of the air conditioning system. At the same time, the functional zoning of the third compartment and the upper and lower compartments does not interfere with each other and does not affect the operation of adjacent control modules and negative pressure modules. This enables the compact single-person negative pressure cabin to achieve the function of environmental temperature control in a compact space.

[0019] Preferably, ventilation openings are provided on both side walls of the first, second, and third compartments for heat dissipation of the outdoor unit of the air conditioner.

[0020] By adopting the above technical solution, the heat generated by the outdoor unit of the air conditioner during operation is quickly discharged through the ventilation openings on both side walls, creating an efficient heat exchange channel in a compact structure.

[0021] Preferably, it also includes a fourth compartment, which is located above the first compartment. A control cabinet is installed in the fourth compartment. The outer side of the control cabinet is provided with a power switch, a running indicator light and an emergency stop button. The control cabinet has electrical wiring inside and controls the other components in a coordinated manner.

[0022] By adopting the above technical solution, the fourth compartment is located above the first compartment, integrating the control cabinet into the top vertical space. Through the hierarchical layout linkage with the first, second, and third compartments below, the problems of inconvenient operation and messy wiring caused by the scattered arrangement of control components are avoided. At the same time, the independent design of the fourth compartment allows the control cabinet to be repaired separately without affecting the functional modules below.

[0023] Preferably, it also includes four casters, two of which are installed at the bottom of the compartment and the other two are installed at the bottom of the second compartment.

[0024] By adopting the above technical solution, the omnidirectional wheels enable the movement of the negative pressure chamber through a distributed load-bearing layout, allowing the negative pressure chamber to quickly respond to the need for movement in scenarios where movement is required.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The compact single-person negative pressure chamber significantly reduces the horizontal space occupied by each module around the chamber by designing the first and second compartments in a vertically layered layout and integrating them on the outside of the chamber. This reduces the overall horizontal projected area and effectively solves the problem of large chamber size caused by independent installation of components. At the same time, the vertical layered structure shortens the pipeline length between the solenoid valve, vacuum filter, and vacuum pump, reduces pipeline crossing and entanglement, and lowers the difficulty of installation and commissioning. Each module is independently partitioned in the vertical direction, allowing for direct maintenance of the corresponding compartment during inspection without disassembling other components, significantly improving maintenance efficiency and shortening downtime. In addition, through the linkage between the solenoid valve and the vacuum pump and the particulate filtration function of the vacuum filter, the negative pressure inside the chamber can be precisely controlled and the cleanliness of the supplementary air can be ensured.

[0027] 2. The cabin door adopts an outward hinged design, so that the opening direction of the cabin door is completely opposite to the interior space. This solves the defect of inward-opening cabin doors occupying the effective space inside the cabin when they are opened. In the case of limited interior space, it avoids the problem of restricted patient movement caused by the opening of the cabin door. Especially in emergency situations, it can achieve rapid entry and exit, which greatly improves the efficiency of emergency response.

[0028] 3. The cabin door is equipped with an observation window, which allows medical staff to clearly observe the patient's condition and the progress of medical procedures inside the cabin without opening the door. This avoids fluctuations in negative pressure inside the cabin caused by frequent door opening and effectively maintains the stability of the negative pressure environment. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0030] Figure 2 This is a schematic diagram illustrating the layered layout of the first, second, third, and fourth compartments, as described in this embodiment of the application.

[0031] Figure 3 This embodiment of the application is a schematic diagram illustrating the structure of the hatch;

[0032] Figure 4 This embodiment of the application is a cross-sectional view along line AA to illustrate the second muffler;

[0033] Figure 5 This embodiment of the application is a cross-sectional view along BB to illustrate the third muffler;

[0034] Figure 6 This embodiment of the application is a cross-sectional view along CC to illustrate the indoor unit of an air conditioner.

[0035] Reference numerals: 1. Compartment; 2. First compartment; 3. Second compartment; 4. Solenoid valve; 5. Vacuum filter; 6. First air intake duct; 7. Exhaust duct; 8. Vacuum pump; 9. Door; 10. Observation window; 11. Frame; 12. Pressure sensor; 13. First silencer; 14. Second silencer; 15. Third silencer; 16. Third compartment; 17. Compressor; 18. Air conditioner outdoor unit; 19. Air conditioner indoor unit; 20. Second air intake duct; 21. Return air duct; 22. Drainage duct; 23. Ventilation vent; 24. Fourth compartment; 25. Control cabinet; 26. Casters; 27. Cable run-through. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1 - Appendix Figure 6 This application will be described in further detail.

[0037] This application discloses a compact single-person negative pressure chamber.

[0038] Reference Figure 1 and Figure 2A compact single-person negative pressure chamber includes a chamber 1 for negative pressure isolation, a first compartment 2 for installing a control module and a filtration system, and a second compartment 3 for installing a negative pressure module. The first compartment 2 and the second compartment 3 are arranged vertically and are opposite to the chamber 1. The second compartment 3 is located at the bottom, and the first compartment 2 is located above the second compartment 3. The first compartment 2 is equipped with a solenoid valve 4 for dynamic adjustment of negative pressure and a vacuum filter 5 for particulate filtration of air. The solenoid valve 4 is connected to the vacuum filter 5. The second compartment 3 is equipped with a first air intake pipe 6, an exhaust pipe 7, and a vacuum pump 8 for establishing negative pressure. One end of the first air intake pipe 6 is connected to the vacuum filter 5, and the other end is connected to the chamber 1. The exhaust pipe 7 is connected to the chamber 1. One end of the vacuum pump 8 is connected to the exhaust pipe 7, and the other end is connected to the outside.

[0039] When the negative pressure chamber is started, the solenoid valve 4 is activated, and outside air enters the solenoid valve 4 to regulate the air suction rate. Then, it passes through the vacuum filter 5, which filters air for particulate matter, and enters the chamber 1 through the first air intake pipe 6. At the same time, the vacuum pump 8 performs air extraction, drawing the air in the chamber 1 through the exhaust pipe 7 and expelling it to the outside.

[0040] Reference Figure 3 The compartment 1 is equipped with a hatch 9. The hatch 9 has an outward-opening hinged design, so that the opening direction of the hatch 9 is opposite to that of the compartment 1. When the hatch 9 is closed, it seals the compartment 1. The outward-opening hinged design of the hatch 9 means that it is completely located outside the compartment 1 after it is opened, which significantly expands the net space inside the compartment 1.

[0041] The door 9 is equipped with an observation window 10, and a frame 11 is connected to the edge of the observation window 10. The frame 11 is fixed to the door 9 with screws. Medical staff can clearly observe the patient's medical procedure progress through the observation window 10, reducing unnecessary opening of the door 9 and avoiding negative pressure fluctuations in the chamber 1.

[0042] Preferably, refer to Figure 2 A pressure sensor 12 is installed in the second compartment 3, with its sensing end directly exposed inside the compartment 1. The pressure sensor 12 monitors the air pressure inside the first compartment in real time and transmits the signal to the solenoid valve 4 to dynamically adjust the air suction rate.

[0043] Reference Figure 2 , Figure 4 and Figure 5The end of the solenoid valve 4 furthest from the vacuum filter 5 is connected to a first silencer 13. The end of the first air intake pipe 6 connected to the chamber 1 is connected to a second silencer 14. The end of the exhaust pipe 7 connected to the chamber 1 is connected to a third silencer 15. When the negative pressure chamber is running, the high-speed airflow will generate considerable noise due to friction. The first silencer 13, the second silencer 14, and the third silencer 15 will absorb and process the noise, reducing the interference of equipment operation on patients and medical staff, and improving the comfort of use.

[0044] Furthermore, referring to Figure 2 and Figure 6 The compact single-person negative pressure chamber disclosed in this embodiment also includes a third compartment 16, which is located below the first compartment 2 and above the second compartment 3. A compressor 17 and an air conditioner outdoor unit 18 are installed in the third compartment 16. An air conditioner indoor unit 19 is installed inside the cabin 1. The air conditioner indoor unit 19 is connected to a second air intake pipe 20, a return air pipe 21 and a drain pipe 22. The air conditioner indoor unit 19 is linked with the air conditioner outdoor unit 18 through the second air intake pipe 20 and with the air conditioner indoor unit 19 through the return air pipe 21. When cooling of compartment 1 is required, the low-pressure refrigerant vaporized in the indoor unit 19 is drawn into the compressor 17 through the return gas pipe 21. The compressor 17 compresses the low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant through mechanical work and delivers it to the outdoor unit 18. The outdoor unit 18 condenses the high-temperature, high-pressure gaseous refrigerant into a high-pressure liquid refrigerant and delivers it to the indoor unit 19. The high-pressure liquid refrigerant is throttled and depressurized in the indoor unit 19, becoming a low-pressure, low-temperature liquid refrigerant. The indoor unit 19 causes air to pass through the low-pressure, low-temperature liquid refrigerant, cooling the interior of compartment 1. The low-pressure, low-temperature liquid refrigerant vaporizes into a low-pressure gaseous refrigerant and is circulated again. At this time, the water vapor in compartment 1... When the gas encounters cold, it condenses into water droplets and is discharged from the drain pipe 22. When heating is required for cabin 1, the four-way valve switches direction, and the compressor 17 draws in the low-pressure gaseous refrigerant from the outdoor unit 18 of the air conditioner. Through compression, it is transformed into a high-temperature, high-pressure gaseous refrigerant, which is then transported to the indoor unit 19 of the air conditioner through the second air intake pipe 20. The high-temperature, high-pressure gaseous refrigerant exchanges heat with the low-temperature air in cabin 1, and the refrigerant releases heat and gradually liquefies into a high-pressure liquid refrigerant. The high-pressure liquid refrigerant is depressurized by the indoor unit 19 of the air conditioner, becoming a low-pressure liquid refrigerant, and is then transported to the outdoor unit 18 of the air conditioner. The low-pressure liquid refrigerant absorbs heat from the air and transforms into a low-pressure gaseous refrigerant, which is then transported back to the compressor 17 for circulation.

[0045] Preferably, ventilation openings 23 are provided on both sides of the first compartment 2, the second compartment 3 and the third compartment 16 for heat dissipation of the outdoor unit 18 of the air conditioner.

[0046] Reference Figure 2 and Figure 6The compact single-person negative pressure chamber disclosed in this embodiment also includes a fourth compartment 24, which is located above the first compartment 2. A control cabinet 25 is installed in the fourth compartment 24. The outer side of the control cabinet 25 is provided with a power switch, a running indicator light and an emergency stop button. The control cabinet 25 has distributed wiring inside and controls other components in conjunction with it. The air conditioning unit is provided with a wire passing device 27 for passing the wire through the compartment and connecting it to the wiring in the control rail.

[0047] Reference Figure 1 The compact single-person negative pressure chamber disclosed in this embodiment also includes four casters 26, two of which are installed at the bottom of the chamber 1 and the other two are installed at the bottom of the second compartment 3. The casters 26 enable the movement of the negative pressure chamber through a distributed load-bearing layout, allowing the negative pressure chamber to quickly respond to movement needs in scenarios where movement is required.

[0048] The implementation principle of this application embodiment is as follows:

[0049] When the compact single-person negative pressure chamber is in use, medical staff start the system via the power switch on the control cabinet 25 in the fourth compartment 24. After the operation indicator light illuminates, the solenoid valve 4 and the vacuum pump 8 are activated synchronously. Outside air is drawn in at a rate regulated by the solenoid valve 4, then enters the vacuum filter 5 in the first compartment 2 for particulate purification. The clean air is then delivered to the chamber 1 via the first air intake pipe 6. At the same time, the vacuum pump 8 in the second compartment 3 continuously draws air from the chamber 1 through the exhaust pipe 7 and discharges it to the outside, thereby creating a stable negative pressure environment in the patient's chamber 1.

[0050] Pressure sensor 12 inside chamber 1 monitors air pressure changes in real time and transmits the signal to solenoid valve 4, dynamically adjusting the air suction rate to maintain a negative pressure state. During this process, the silencers of solenoid valve 4, first air intake pipe 6, and exhaust pipe 7 absorb the noise generated by airflow friction, reducing interference to patients and medical staff.

[0051] When cabin temperature needs to be adjusted, the air conditioning system is activated. In cooling mode, the indoor unit 19 of cabin 1 delivers low-pressure gaseous refrigerant via return pipe 21 to compressor 17 in the third compartment 16. The compressed, high-temperature, high-pressure gaseous refrigerant enters the outdoor unit 18 and condenses into a high-pressure liquid. It then returns to the indoor unit 19, where it is throttled and depressurized into a low-temperature liquid refrigerant. Through heat exchange, the cabin temperature is lowered, and the condensed water droplets are discharged via drain pipe 22. In heating mode, compressor 17 compresses the low-pressure gaseous refrigerant into a high-temperature, high-pressure gas, which is directly delivered to the indoor unit 19 via the second intake pipe 20 to release heat. The liquefied refrigerant returns to the outdoor unit to absorb ambient heat and vaporize, completing the heating cycle.

[0052] Medical staff can monitor the patient's condition in real time through the observation window 10 on the door 9, reducing the frequency of door 9 opening to avoid negative pressure fluctuations. In case of emergency, operation can be immediately interrupted via the emergency stop button on the control cabinet 25. The casters 26 at the bottom of the equipment allow for flexible movement to adapt to different scenarios.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A compact single-person negative pressure chamber, characterized in that, The system includes a chamber (1) for negative pressure isolation, a first compartment (2) for installing a control module and a filtration system, and a second compartment (3) for installing a negative pressure module. The first compartment (2) and the second compartment (3) are arranged vertically in layers and are opposite to the chamber (1). The second compartment (3) is located at the bottom, and the first compartment (2) is located above the second compartment (3). The first compartment (2) is equipped with a solenoid valve (4) for dynamic adjustment of negative pressure and a vacuum filter (5) for particulate filtration of air. The solenoid valve (4) is connected to the vacuum filter (5). The second compartment (3) is equipped with a first air intake pipe (6), an exhaust pipe (7), and a vacuum pump (8) for establishing negative pressure. One end of the first air intake pipe (6) is connected to the vacuum filter (5), and the other end is connected to the chamber (1). The exhaust pipe (7) is connected to the chamber (1), and one end of the vacuum pump (8) is connected to the exhaust pipe (7), and the other end is connected to the outside.

2. The compact single-person negative pressure chamber according to claim 1, characterized in that, The compartment (1) is provided with a hatch (9). The hatch (9) is designed with an outward hinge so that the opening direction of the hatch (9) is opposite to that of the compartment (1). When the hatch (9) is closed, the compartment (1) is sealed.

3. A compact single-person negative pressure chamber according to claim 2, characterized in that, The hatch (9) is provided with an observation window (10), and the edge of the observation window (10) is connected to a frame (11), which is fixed to the hatch (9) by screws.

4. A compact single-person negative pressure chamber according to claim 1, characterized in that, A pressure sensor (12) is installed in the second compartment (3), and the sensing end of the pressure sensor (12) is directly exposed inside the compartment (1).

5. A compact single-person negative pressure chamber according to claim 1, characterized in that, The end of the solenoid valve (4) away from the vacuum filter (5) is connected to a first silencer (13), the end of the first air intake pipe (6) connected to the compartment (1) is connected to a second silencer (14), and the end of the exhaust pipe (7) connected to the compartment (1) is connected to a third silencer (15).

6. A compact single-person negative pressure chamber according to claim 1, characterized in that, It also includes a third compartment (16), which is located below the first compartment (2) and above the second compartment (3). The third compartment (16) is equipped with a compressor (17) and an outdoor air conditioning unit (18). The cabin (1) is equipped with an indoor air conditioning unit (19). The indoor air conditioning unit (19) is connected to a second air intake pipe (20), a return air pipe (21), and a drain pipe (22). The indoor air conditioning unit (19) is linked to the outdoor air conditioning unit (18) through the second air intake pipe (20), and the indoor air conditioning unit (19) is linked to the compressor (17) through the return air pipe (21).

7. A compact single-person negative pressure chamber according to claim 6, characterized in that, Ventilation openings (23) are provided on both sides of the first compartment (2), the second compartment (3) and the third compartment (16) for heat dissipation of the outdoor unit (18) of the air conditioner.

8. A compact single-person negative pressure chamber according to claim 1, characterized in that, It also includes a fourth compartment (24), which is located above the first compartment (2). A control cabinet (25) is installed in the fourth compartment (24). The outer side of the control cabinet (25) is equipped with a power switch, a running indicator light and an emergency stop button. The control cabinet (25) has electrical wiring inside and controls the other components in a coordinated manner.

9. A compact single-person negative pressure chamber according to claim 1, characterized in that, It also includes four casters (26), two of which are installed at the bottom of the compartment (1) and the other two are installed at the bottom of the second compartment (3).

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