CN212987466U

CN212987466U - Air inlet mechanism and negative pressure system

Info

Publication number: CN212987466U
Application number: CN202021249713.9U
Authority: CN
Inventors: 何伟; 朱国远; 黄伟俊; 黄愉太; 饶涛
Original assignee: Shenzhen Juding Medical Co Ltd
Current assignee: Shenzhen Ruili Medical Technology Co ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-04-16
Anticipated expiration: 2030-06-30

Abstract

The embodiment of the utility model discloses mechanism and negative pressure system admit air. The air inlet mechanism comprises a first air inlet end, a first air outlet end and a first channel communicated with the first air inlet end and the first air outlet end, a first air driving unit is accommodated in the first channel, a first filtering assembly is arranged between the first air inlet end and the first air driving unit, a second filtering assembly is arranged between the first air outlet end and the first air driving unit, the air inlet mechanism further comprises an air conditioner assembly used for adjusting the temperature and the humidity of air in the first channel, the air conditioner assembly comprises an evaporator, a condenser and a second air driving unit, and the evaporator is accommodated in the first channel and located between the first air driving unit and the first filtering assembly. Above-mentioned air inlet mechanism has the air conditioner subassembly that is used for adjusting the internal gas temperature humidity of first passageway, has guaranteed that the humiture of the gas behind air inlet mechanism is adjustable, and then can adjust the inside gaseous humiture of negative pressure system, has improved personnel's comfort level in the inside of negative pressure system.

Description

Air inlet mechanism and negative pressure system

Technical Field

The utility model relates to a protection technology field especially relates to an air intake mechanism and negative pressure system.

Background

The harmful substances are usually transmitted through the air, and in order to prevent the diffusion of the harmful substances, the harmful substances are generally isolated from the outside in an isolating manner. The conventional negative pressure system prevents the harmful material from leaking out by forming a negative pressure. Because the air inlet mechanism for supplying air to the negative pressure system lacks the function of adjusting the temperature and humidity, the temperature and humidity of the gas in the negative pressure system cannot be adjusted, the temperature and humidity of the gas in the negative pressure system cannot be controlled, and the comfort level of personnel in the negative pressure system is further reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air intake mechanism and negative pressure system when preventing harmful substance along with air diffusion to solve the uncontrollable technical problem of the inside gaseous humiture of traditional negative pressure system.

In order to achieve the above object, the present invention adopts the following technical means:

an air inlet mechanism comprises a first air inlet end, a first air outlet end and a first channel communicated with the first air inlet end and the first air outlet end, a first gas driving unit is accommodated in the first channel, a first filtering component is arranged between the first gas inlet end and the first gas driving unit, a second filtering component is arranged between the first air outlet end and the first air driving unit, the air inlet mechanism also comprises an air conditioning component for adjusting the temperature and humidity of the air in the first channel, the air conditioning assembly comprises an evaporator, a condenser and a second gas driving unit, the evaporator is contained in the first channel and is positioned between the first gas driving unit and the first filtering assembly, the first gas driving unit drives gas to pass through the evaporator to exchange heat with the evaporator, and the second gas driving unit drives gas to pass through the condenser to exchange heat with the condenser.

In some embodiments of the air inlet mechanism, the air conditioning assembly further comprises a water collecting box, a water beating motor and a water beating wind wheel arranged at the output end of the water beating motor, the water collecting box is used for collecting the unevaporated condensate water which is drained to the condenser from the evaporator side during refrigeration, and the water beating motor drives the water beating wind wheel to break up the condensate water and exchange heat with the condenser again.

In some embodiments of the air intake mechanism, a heater is housed within the first passage.

In some embodiments of the air intake mechanism, the air conditioning assembly further comprises a compressor and a throttle device.

a negative pressure system, comprising:

the sealing structure can be unfolded to form a cavity and comprises an opening and closing mechanism, and the opening and closing mechanism is used for communicating or isolating the cavity with the external space of the sealing structure;

a support device capable of deploying the enclosure;

the detection device is used for detecting the air pressure inside the closed structure; and

the gas exchange device is used for purifying and exchanging the gas inside and outside the closed structure;

the gas exchange device comprises an exhaust mechanism, a purification mechanism and the gas inlet mechanism, wherein the purification mechanism is used for purifying the gas passing through the gas inlet mechanism and the gas passing through the exhaust mechanism, the purification mechanism comprises a first purification component and a second purification component, the first purification component is used for purifying the gas passing through the gas inlet mechanism, and the second purification component is used for purifying the gas passing through the exhaust mechanism;

the air inlet mechanism is used for introducing air into the closed structure, and the exhaust mechanism is used for exhausting the air in the closed structure so as to adjust the air pressure in the closed structure to be lower than the air pressure outside the closed structure.

In some embodiments of the negative pressure system, the opening and closing mechanism is a door structure for people to enter and exit.

In some embodiments of the negative pressure system, the support device comprises a plurality of support mechanisms;

the adjacent supporting mechanisms can be connected into a whole when being close to each other, and the adjacent supporting mechanisms can unfold the closed structure when being far away from each other.

In some embodiments of the negative pressure system, the support mechanism includes bodies, at least one of the bodies having the air intake mechanism disposed thereon, and at least one of the bodies having the air exhaust mechanism disposed thereon.

In some embodiments of the negative pressure system, at least one of the bodies is provided with an operation console, and the operation console controls the flow rate of the gas passing through the gas inlet mechanism and the flow rate of the gas passing through the gas outlet mechanism according to the gas pressure value detected by the detection device.

In some embodiments of the negative pressure system, a top of the supporting mechanism is provided with a telescopic rod, and the telescopic rod can be accommodated in the supporting mechanism.

Implement the embodiment of the utility model provides a, will have following beneficial effect:

above-mentioned air inlet mechanism has the air conditioner subassembly that is used for adjusting the internal gas temperature humidity of first passageway, has guaranteed that the humiture of the gas behind air inlet mechanism is adjustable, and then can adjust the inside gaseous humiture of negative pressure system, has improved personnel's comfort level in the inside of negative pressure system.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Wherein:

FIG. 1 is a front view of a negative pressure system in one embodiment as it is deployed.

Fig. 2 is an axial view of the negative pressure system shown in fig. 1.

Fig. 3 is a top view of the negative pressure system shown in fig. 1.

Fig. 4 is an axial view of a closed structure in the negative pressure system shown in fig. 1.

Figure 5 is an axial view of the support assembly in one embodiment when retracted.

Fig. 6 is an enlarged view of the part a in fig. 5.

Fig. 7 is an enlarged view of the part B in fig. 5.

Fig. 8 is a schematic view showing the support device in the negative pressure system shown in fig. 1 being unfolded in the X direction.

Fig. 9 is a schematic view showing the support device in the negative pressure system shown in fig. 1 expanded in the Y direction.

FIG. 10 is a schematic view of the extension rod of the suction system shown in FIG. 1.

Fig. 11 is a schematic structural diagram of a first support mechanism in the negative pressure system shown in fig. 1.

Fig. 12 is a schematic structural diagram of a third supporting mechanism in the negative pressure system shown in fig. 1.

Fig. 13 is a schematic structural diagram of the first gas driving unit/the third gas driving unit in the negative pressure system shown in fig. 1.

Fig. 14 is a schematic view of the connection strip in the negative pressure system shown in fig. 1.

FIG. 15 is an axial view of a first support mechanism in one embodiment.

Fig. 16 is an axial view of the internal structure of the body of the first support mechanism shown in fig. 15.

Fig. 17 is a plan view of the internal structure of the body of the first support mechanism shown in fig. 15.

Fig. 18 is a cross-sectional view taken along line C-C of fig. 17.

Fig. 19 is an enlarged view of the portion D in fig. 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The embodiment of the utility model provides a negative pressure system 10 is used for preventing that harmful substance from propagating through the air, and harmful substance is including harmful gas, harmful liquid and the harmful solid particle that can be along with the airborne and mycoplasma and pathogen that can be along with the airborne, and harmful substance is still including the aerosol that contains mycoplasma and/or pathogen. Of course, in other embodiments of the present invention, the negative pressure system 10 can also be used to prevent harmful substances from being transmitted through other media, or other non-harmful substances from being transmitted, or applied to other situations requiring negative pressure, and is not limited herein.

Referring to fig. 1 to 14, a negative pressure system 10 according to the present invention will be described. A negative pressure system 10, comprising: an enclosure 100, a support 200, a detection device and a gas exchange device. The enclosure 100 is a flexible structure or a folding structure that can be composed of a plurality of splice plates, and the folding structure can be folded to reduce the volume for carrying, and has a certain space after being unfolded. Further, the enclosure structure 100 can be unfolded to form a cavity, and the enclosure structure 100 includes an opening and closing mechanism 110, and the opening and closing mechanism 110 is used for communicating or isolating the cavity with the external space of the enclosure structure 100. The negative pressure system 10 adopts the closed structure 100, the closed structure 100 can be unfolded to form a cavity, the cavity is communicated or isolated with an external space through the opening and closing mechanism 110, and when the opening and closing mechanism 110 is closed, the cavity can be completely isolated from the external space, so that the diffusion of harmful substances is effectively prevented.

Referring to fig. 1 to 4, the sealing structure 100 is a flexible structure, and the unfolded shape of the sealing structure 100 may be a rectangular parallelepiped, a cylinder, a semi-spherical body, or other shapes capable of forming a certain space. In this embodiment, the shape of the enclosing structure 100 is a rectangular parallelepiped. Specifically, the enclosure structure 100 includes a bottom section 120, a top section 130, and

side sections

140, 120, 130 and 140 between the bottom section 120 and the top section 130 that are unfolded to form a cavity. In this embodiment, the opening and closing mechanism 110 includes two opening and closing portions 111, the two opening and closing portions 111 are closed in a magnetic attraction manner or a mechanical connection manner, and a sealing structure is further disposed between the two opening and closing portions 111 to ensure that the cavity is isolated from an external space when the opening and closing mechanism is closed. The side subsection 140 also has a viewing window 141 made of transparent medium.

In this embodiment, the opening and closing mechanism 110 is a door structure for people to get in and out, and the opening and closing portion 111 is a flexible structure, for example, the opening and closing portion 111 is a flexible curtain, and two opening and closing portions 111 are folded in a manner of deviating from each other to form a passage for getting in and out of the cavity. It can be understood that in other embodiments, the top of the opening/closing portion 111 and the side away from the other opening/closing portion 111 are integrally connected to the enclosing structure 100, the bottom of the opening/closing portion 111 is detachably connected to the enclosing structure 100, and the connection can be achieved by a magnetic attraction manner or a mechanical connection manner, and a sealing structure is disposed between the bottom of the opening/closing portion 111 and the enclosing structure 100 to ensure that the cavity is isolated from the external space when closed. That is, an L-shaped connecting seam is formed between adjacent opening/closing portions 111 and the bottom of the opening/closing portion 111, and the opening/closing portion 111 is lifted along the L-shaped connecting seam to enter and exit the cavity. When the opening and closing mechanism 110 is closed, the closed structure 100 is a full-sealed structure, and gas can only be exchanged through the gas exchange device, so that absolute isolation of harmful substances from the outside is ensured.

Further, the support device 200 is capable of deploying the enclosure 100. Specifically, the support device 200 includes a plurality of support mechanisms. Adjacent supporting mechanism can connect as an organic whole when being close to, and accessible magnetism is inhaled the mode or mechanical mode and is connected. The closure structure 100 can be deployed when adjacent support mechanisms are far apart. Furthermore, a telescopic rod is arranged at the top of the supporting mechanism and can be contained in the supporting mechanism. When the adjacent supporting mechanisms are far away from each other, the height of the supporting mechanisms cannot meet the requirement that when the closed structure 100 is expanded in the axial direction of the supporting mechanisms, the telescopic rods extend out of the supporting mechanisms and are locked to improve the height of the supporting mechanisms, the closed structure 100 is expanded into a final shape, and the closed structure 100 is connected with the supporting mechanisms and the telescopic rods through connecting pieces. The bottom of the support mechanism has rollers 210 to facilitate the approach and departure of adjacent support mechanisms. The roller 210 is provided with a locking portion that locks the roller 210 after the support mechanism has moved to a predetermined position, to prevent the support mechanism from moving. The presence of the roller 210 also facilitates the overall movement of the support device 200, and the enclosing structure 100 is a flexible structure, so that the overall portability of the negative pressure system 10 is enhanced when it is retracted.

In this embodiment, the supporting device 200 includes a first supporting mechanism 220, a second supporting mechanism 230, a third supporting mechanism 240 and a fourth supporting mechanism 250, the first supporting mechanism 220 and the second supporting mechanism 230 and the third supporting mechanism 240 and the fourth supporting mechanism 250 are connected by a magnetic element, an elastic element is wrapped around the magnetic element to reduce impact caused by collision during connection, and the first supporting mechanism 220 and the fourth supporting mechanism 250 and the second supporting mechanism 230 and the third supporting mechanism 240 are connected by a lock catch 260. The lock catch 260 includes a connection block 261 and a connection groove, the connection block 261 is rotatable with respect to the first/second supporting mechanisms 220/230, a connection protrusion 2611 is formed thereon to match the connection groove formed on the third/fourth supporting mechanisms 240/250, and the connection block 261 and the connection groove may be magnetically or mechanically connected. Further, the piece is inhaled to magnetism is electromagnetic, is provided with touch switch 270 on the strutting arrangement 200, can realize the outage and the circular telegram of the piece of magnetism through touch switch 270 to the magnetic attraction that the piece was inhaled to messenger disappears and forms. The elastic component is extruded and forms the elastic force after magnetic attraction forms, and when magnetic attraction disappears, under the effect of elastic force, first supporting mechanism 220 and second supporting mechanism 230 that link as an organic whole through hasp 260 and third supporting mechanism 240 and fourth supporting mechanism 250 that link as an organic whole through hasp 260 can bounce each other, conveniently expand as holistic first supporting mechanism 220 and second supporting mechanism 230 and third supporting mechanism 240 and fourth supporting mechanism 250 as a whole with the help of inertia. The piece is inhaled to magnetism produces touching touch switch 270 once after the magnetic attraction, and the magnetic attraction disappears, touches touch switch 270 once again, and the magnetic attraction produces again.

Further, the negative pressure system 10 further includes a telescopic connecting frame 300, and the connecting frame 300 is used for driving the adjacent supporting mechanism to approach and move away. The connecting frame 300 comprises a first connecting frame 310 connected between the second supporting mechanism 230 and the third supporting mechanism 240, a second connecting frame 320 connected between the third supporting mechanism 240 and the fourth supporting mechanism 250, and a third connecting frame 330 connected between the fourth supporting mechanism 250 and the first supporting mechanism 220, and through the arrangement of the three groups of connecting frames 300, the supporting mechanisms which are close to each other can be far away from each other, and the far direction and distance can be limited, so that the closed structure 100 can be unfolded. As described above, when the magnetic attraction force disappears, the first and second supporting

mechanisms

220 and 230 integrated by the latch 260 and the third and fourth supporting

mechanisms

240 and 250 integrated by the latch 260 can be elastically released from each other by the elastic force, and the second linking frame 320 is extended in the X direction in fig. 8 to unfold the first and second supporting

mechanisms

220 and 230 and the third and fourth supporting

mechanisms

240 and 250 as a whole. Thereafter, the latch 260 is opened, the first link 310 is extended in the Y direction of fig. 9 to unfold the second and

third support mechanisms

230 and 240, the third link 330 is extended in the Y direction of fig. 9 to unfold the first and

fourth support mechanisms

220 and 250, and finally, each support mechanism is locked by the roller 210. In this embodiment, the connecting frame 300 is formed by hinging a plurality of connecting rods 301 end to end, and the two connecting rods 301 at the ends are respectively connected to the corresponding supporting mechanisms.

Further, the detection device is used for detecting the air pressure inside the enclosure 100. Specifically, the detection device is used for detecting the air pressure of the cavity.

Further, the gas exchange device is used for exchanging the purified gas inside and outside the enclosure 100 so as to adjust the pressure inside the enclosure 100 to be lower than the pressure outside the enclosure 100. Furthermore, the gas exchange device is a fresh air device with a purification function, the gas exchange device comprises an air inlet mechanism, an exhaust mechanism and a purification mechanism, and the purification mechanism is used for purifying the gas passing through the air inlet mechanism and the gas passing through the exhaust mechanism. The air inlet mechanism is used for introducing air into the closed structure 100, and the air outlet mechanism is used for discharging air in the closed structure 100 so as to adjust the air pressure in the closed structure 100 to be lower than the air pressure outside the closed structure 100.

Specifically, the exhaust mechanism is communicated with the cavity and used for adjusting the air pressure of the cavity to be lower than the air pressure outside the cavity. The air inlet mechanism comprises a first air inlet end 225, a first air outlet end 226 and a first channel communicated with the first air inlet end 225 and the first air outlet end 226, a first air driving unit 500 is arranged on the first channel, the first air inlet end 225 is communicated with an input end 501 of the first air driving unit 500, the first air outlet end 226 is communicated with an output end 502 of the first air driving unit 500, air in the external space of the closed structure 100 is driven by the first air driving unit 500, and the air can enter the cavity through the first channel. The exhaust mechanism comprises a second air inlet end 243, a second air outlet end and a second channel communicated with the second air inlet end 243 and the second air outlet end, a third air driving unit 600 is arranged on the second channel, the second air inlet end 243 is communicated with an input end 601 of the third air driving unit 600, the second air outlet end is communicated with an output end 602 of the third air driving unit 600, air in the cavity is driven by the third air driving unit 600, and the air can be exhausted out of the cavity through the second channel. The purification mechanism comprises a first purification assembly and a second purification assembly, the first purification assembly is used for purifying gas passing through the air inlet mechanism, and the second purification assembly is used for purifying gas passing through the exhaust mechanism. Specifically, purify the mechanism and include the first subassembly that purifies that sets up in the first passageway and set up in the second subassembly that purifies of second passageway, specifically, first subassembly that purifies includes first air purification net and is used for fixing first air purification net the first connecting piece in the first passageway, and the second subassembly that purifies includes second air purification net and is used for fixing second air purification net the second connecting piece in the second passageway. The first air purification net and the second air purification net are HEPA filter screens, wherein the second air purification net also has a sterilization function to ensure that the exhaust gas is free of harmful substances. Further, the cavity is enabled to form negative pressure through the combined action of the air inlet mechanism and the air outlet mechanism.

As shown in fig. 14, further, a connection strip 1111 is provided at a detachable connection position of the opening and closing portion 111 and the connection position between the adjacent opening and closing portions 111, and the connection strip 1111 provided at the connection position between the adjacent opening and closing portions 111 is fixedly connected to one of the opening and closing portions 111. The connecting strip 1111 is located the circumference of the portion 111 that opens and shuts and keeps away from one side of cavity, because the atmospheric pressure in the cavity is less than the atmospheric pressure outside the cavity, connecting strip 1111 adsorbs in each junction, guarantees that the cavity keeps apart with external space, and the processing is done in order to reduce its sliding friction force on the connecting strip 1111 surface, and then reduces the portion 111 that opens and shuts and open the resistance. The connecting strip 1111 can be made of flexible materials and can deform under the action of air pressure, and the isolation of the cavity from the external space is further ensured.

Further, the supporting mechanism comprises bodies, at least one body is provided with an air inlet mechanism, and at least one body is provided with an exhaust mechanism. At least one body is provided with an operation console, and the operation console controls the gas flow passing through the gas inlet mechanism and the gas flow passing through the gas outlet mechanism according to the gas pressure value detected by the detection device.

Specifically, the first supporting mechanism 220 includes a first body 221, an air inlet mechanism is disposed in the first body 221, the first air outlet end 226 is communicated with the cavity, a roller 210 is disposed at the bottom of the first body 221, a first telescopic rod 222 capable of extending out of the top of the first body 221 is accommodated in the first body 221, an operation console is further disposed in the first body 221, the operation console includes a display screen 223, a processing unit, a receiving unit, a sending unit and a report generating unit, and the processing unit is used for controlling the air flow passing through the air inlet mechanism and the air flow passing through the air outlet mechanism according to the air pressure value detected by the detecting device. The receiving unit is used for receiving external signals, such as control signals, to control the operation of the negative pressure system 10, data signals, including examination information of infected patients, and the like. The transmitting unit is used for transmitting signals such as operation information of the negative pressure system 10, monitoring data of an infected patient and the like to the outside. The report generation unit is used for generating and exporting a paper report from the report outlet 224 of the first body 221, wherein the paper report may include status information of the negative pressure system 10, monitoring data of an infectious patient, or an examination report of the infectious patient, etc. over a period of time. The display screen 223 is disposed on the top end of the first body 221, and is used for displaying the air pressure value detected by the detection device, the air flow of the air intake mechanism and the air exhaust mechanism, the monitoring data of the infectious patient, or the examination report of the infectious patient, and the display screen 223 has an interactive function. The gas quality inside the closed structure 100 detected by the detection device can also be displayed in real time through the display screen 223, so that the gas quality inside the closed structure 100 can be known in real time.

In another embodiment, please refer to fig. 15 to 19 together, the air inlet mechanism includes a first air inlet end 225, a first air outlet end 226, and a first channel connecting the first air inlet end 225 and the first air outlet end 226. The first channel houses a first gas drive unit 228. Further, referring to fig. 15 to 19, a first filter assembly is disposed between the first gas inlet 225 and the first gas driving unit 228. A second filter assembly is disposed between the first gas outlet 226 and the first gas driving unit 228. The inner wall of the first channel is provided with an embedding part for fixing the first filter assembly. A first purge assembly is disposed between the first gas drive unit 228 and the first filter assembly. Specifically, the first filter assembly includes a primary filter 2271 and a secondary filter 2272. The inner wall of the first channel is provided with an insert for securing a primary filter 2271 and a secondary filter 2272. The second filter assembly includes a high efficiency filter 2273. High efficiency filter 2273 is fixedly connected to the first channel. Further, a first purge assembly is located between the first gas drive unit 228 and the intermediate filter 2272. The first purification assembly comprises a first air purification net and an ultraviolet lamp. The first air purification net is attached to the middle-effect filter 2272. The ultraviolet lamp is used for sterilizing and disinfecting the gas passing through the first air purification net. Further, the first supporting mechanism 220 includes a first body 221, and an air intake mechanism is disposed in the first body 221. The air intake mechanism further includes an inner housing 229 located within the first body 221. The first channel is defined by the first body 221 and the partition on the inner shell 229. Further, a mesh plate is disposed on the first gas inlet end 225 for preliminary filtering before the gas enters the first passage to remove impurities with larger size, so as to improve the life of the first filtering assembly and the first purifying assembly. Further, the first air outlet end 226 is communicated with the cavity, the bottom of the first body 221 is provided with a roller 210, the first body 221 is internally provided with a first telescopic rod 222 which can extend out of the top of the first body, the first body 221 is internally provided with an operation console, the operation console comprises a display screen 223, a processing unit, a receiving unit, a sending unit and a report generating unit, and the processing unit is used for controlling the air flow passing through the air inlet mechanism and the air flow passing through the air outlet mechanism according to the air pressure value detected by the detection device. The receiving unit is used for receiving external signals, such as control signals, to control the operation of the negative pressure system 10, data signals, including examination information of infected patients, and the like. The transmitting unit is used for transmitting signals such as operation information of the negative pressure system 10, monitoring data of an infected patient and the like to the outside. The display screen 223 is disposed on the top end of the first body 221, and is used for displaying the air pressure value detected by the detection device, the air flow of the air intake mechanism and the air exhaust mechanism, the monitoring data of the infectious patient, or the examination report of the infectious patient, and the display screen 223 has an interactive function. The gas quality inside the closed structure 100 detected by the detection device can also be displayed in real time through the display screen 223, so that the gas quality inside the closed structure 100 can be known in real time.

Further, the air intake mechanism further comprises an air conditioning assembly 700 for adjusting the temperature and humidity of the air in the first channel. In this embodiment, the air conditioning assembly 700 includes an evaporator 710, a condenser 720 and a second gas driving unit 730, the evaporator 710 is received in the first channel and located between the first gas driving unit 228 and the first filter assembly, and the first gas driving unit 228 drives the gas to exchange heat with the evaporator 710. Specifically, the first gas driving unit 228 drives gas to enter the first channel from the first gas inlet 225, and sequentially passes through the primary filter 2271, the intermediate filter 2272, the first air purification net, the evaporator 710, the first gas driving unit 228 and the high efficiency filter 2273, and then enters the cavity from the first gas outlet 226. Above-mentioned process both can guarantee the gaseous cleanliness factor that gets into the cavity, can adjust gaseous humiture through the heat transfer effect of evaporimeter 710 again, and then can adjust the inside gaseous humiture of negative pressure system 10, has improved personnel at the inside comfort level of negative pressure system 10.

Further, the second gas driving unit 730 is disposed on the inner shell 229, the first body 221 is disposed with a third gas inlet 731 and a third gas outlet 732 communicated with the second gas driving unit 730, and the second gas driving unit 730 drives the gas to exchange heat with the condenser 720 through the condenser. Specifically, the second gas driving unit 730 drives the gas to enter the first body 221 from the third gas inlet 731, and then the gas passes through the condenser 720 and the second gas driving unit 730 in sequence and then exits the first body 221 from the third gas outlet 732. The third gas inlet end 731 and the third gas outlet end 732 are provided with mesh plates for preliminary filtering before the gas enters the first body 221 to remove impurities of a larger size.

Further, the air conditioning assembly 700 further includes a water collecting box 740, a water pumping motor 750, and a water pumping wind wheel 751 disposed at an output end of the water pumping motor 750. The sump 740 is used to collect the non-evaporated condensed water introduced from the evaporator 710 side to the condenser 720 during cooling. The water beating motor 750 drives the water beating wind wheel 751 to break up the condensed water and exchange heat with the condenser 720 again. Specifically, the condenser 720 comprises at least two tube plates 721, the water-beating wind wheel 751 is partially accommodated in a gap between adjacent tube plates 721, condensed water generated at the side of the evaporator 710 during refrigeration is guided to the condenser 720 through the flow guide device for heat exchange, the non-evaporated condensed water flows into the water collection box 740 and is scattered by the water-beating wind wheel 751, water mist is formed between the adjacent tube plates 721 and is sprinkled on the tube plates 721, and the heat exchange is carried out again with the condenser 720.

Further, a heater is accommodated in the first channel, and the heater is used for assisting in heating the gas during heating. Further, the air conditioning assembly 700 further includes a compressor 760 and a throttling device 770. During operation, the compressor 760 compresses the refrigerant into high-temperature and high-pressure gas, the gaseous refrigerant is condensed into medium-temperature and high-pressure liquid through the exhaust pipe via the condenser 720, and then the liquid is throttled by the throttling device 770 and introduced into the evaporator 710 to cool and exchange heat with the medium to be cooled. The refrigerant in the serpentine tube of the evaporator 710 exchanges heat and then turns into low-temperature low-pressure vapor, which returns to the compressor 760 through the low-pressure muffler and is then compressed by the compressor 760, so that the refrigerant is recycled to complete the refrigeration process, and otherwise, the heating process is completed.

Further, the second supporting mechanism 230 includes a second body 231, the bottom of the second body 231 is provided with a roller 210, and the second body 231 accommodates a second telescopic rod 232 which can extend from the top thereof. The second body 231 is also formed with a storage groove 233 for storing articles. As shown in fig. 7, the touch switch 270 is disposed on the second body 231, and is a foot touch switch, on which a sliding prevention portion 271 is disposed and can rotate relative to the second body 231. As shown in fig. 1 to 3 and 8 to 10, the opening and closing mechanism 110 is disposed between the first supporting mechanism 220 and the second supporting mechanism 230. In order to drive the opening and closing mechanism 110 to open and close, a cross beam 400 is arranged between the first telescopic rod 222 and the second telescopic rod 232, and a driving mechanism for driving the opening and closing mechanism 110 to open and close is arranged on the cross beam 400.

Further, the third supporting mechanism 240 includes a third body 241, an air exhausting mechanism is disposed in the third body 241, a second air inlet 243 is communicated with the cavity, a roller 210 is disposed at the bottom of the third body 241, and a third telescopic rod 242 capable of extending out from the top of the third body 241 is accommodated in the third body 241. The first air outlet end 226 and the second air inlet end 243 are arranged diagonally, which is beneficial to rapid diffusion of air entering the cavity, for example, for a patient needing oxygen inhalation, air with higher oxygen content can be introduced from the first channel 227; when the cavity needs to be sterilized, sterilizing atmosphere can be introduced from the first channel 227; when it is desired to remove or react with the harmful substances in the chamber, a corresponding atmosphere may be introduced from the first passage 227.

Further, the fourth supporting mechanism 250 includes a fourth body 251, and a backup battery may be disposed in the fourth body 251 to ensure that the negative pressure system 10 can still operate when the external power supply to the negative pressure system 10 is stopped. The fourth body 251 is provided at the bottom thereof with a roller 210, and the fourth body 251 accommodates a fourth telescopic rod 252 which can be extended from the top thereof.

When the supporting device 200 is contracted, the first supporting mechanism 220, the second supporting mechanism 230, the third supporting mechanism 240 and the fourth supporting mechanism 250 can surround to form an accommodating space 290, and the closed structure 100 can be accommodated in the accommodating space 290 after being contracted and the cross beam 400 is folded, so that the portability of the negative pressure system 10 when being contracted is improved.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.

Claims

1. An air inlet mechanism is characterized by comprising a first air inlet end, a first air outlet end and a first channel communicated with the first air inlet end and the first air outlet end, wherein a first air driving unit is accommodated in the first channel, a first filtering component is arranged between the first air inlet end and the first air driving unit, a second filtering component is arranged between the first air outlet end and the first air driving unit, the air inlet mechanism further comprises an air conditioner component used for adjusting the temperature and humidity of air in the first channel,

the air conditioning assembly comprises an evaporator, a condenser and a second gas driving unit, the evaporator is contained in the first channel and located between the first gas driving unit and the first filtering assembly, the first gas driving unit drives gas to pass through the evaporator and heat exchange thereof, and the second gas driving unit drives gas to pass through the condenser and heat exchange thereof.

2. The air inlet mechanism of claim 1, wherein the air conditioning assembly further comprises a water collecting box, a water beating motor and a water beating wind wheel arranged at the output end of the water beating motor, the water collecting box is used for collecting non-evaporated condensate water which is guided to the condenser from the evaporator side during refrigeration, and the water beating motor drives the water beating wind wheel to break up the condensate water and exchange heat with the condenser again.

3. The intake mechanism according to claim 1, wherein a heater is housed in the first passage.

4. The air intake mechanism of any one of claims 1 to 3, wherein the air conditioning assembly further comprises a compressor and a throttle device.

5. A negative pressure system, comprising:

a support device capable of deploying the enclosure;

the gas exchange device comprises an exhaust mechanism, a purification mechanism and the gas inlet mechanism as claimed in any one of claims 1 to 4, wherein the purification mechanism is used for purifying the gas passing through the gas inlet mechanism and the gas passing through the exhaust mechanism, the purification mechanism comprises a first purification component and a second purification component, the first purification component is used for purifying the gas passing through the gas inlet mechanism, and the second purification component is used for purifying the gas passing through the exhaust mechanism;

6. The negative pressure system of claim 5, wherein the opening and closing mechanism is a door structure for personnel to enter and exit.

7. The negative-pressure system of claim 5, wherein the support device comprises a plurality of support mechanisms;

8. The negative pressure system of claim 7, wherein the support mechanism includes bodies, at least one of the bodies having the air intake mechanism disposed thereon and at least one of the bodies having the air exhaust mechanism disposed thereon.

9. The negative pressure system of claim 8, wherein at least one of the bodies has an operating console disposed thereon, the operating console controlling the flow of gas through the intake mechanism and the flow of gas through the exhaust mechanism based on the pressure value detected by the detection device.

10. The negative pressure system of claim 7, wherein a top portion of the support mechanism is provided with a retractable rod that can be received in the support mechanism.