CN219120728U - Local diffusion oxygen supply device - Google Patents
Local diffusion oxygen supply device Download PDFInfo
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- CN219120728U CN219120728U CN202223556117.7U CN202223556117U CN219120728U CN 219120728 U CN219120728 U CN 219120728U CN 202223556117 U CN202223556117 U CN 202223556117U CN 219120728 U CN219120728 U CN 219120728U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The utility model discloses a local dispersion oxygen supply device, which comprises an oxygen mixing device and a pressure-stabilizing air outlet device, wherein the pressure-stabilizing air outlet device is arranged at an oxygen supply output end fixed on the oxygen mixing device; the oxygen mixing device further comprises a gas mixing pipe which is fixedly arranged at the oxygen supply input end of the stable-pressure air outlet device and a driving air source which is fixedly arranged on the gas mixing pipe and used for introducing air, the gas mixing pipe further comprises a flow equalizing sleeve, and an air source pipe and a mixing generating pipe which are connected to the flow equalizing sleeve and mutually communicated with the flow equalizing sleeve, the driving air source is fixedly arranged on the air source pipe, the flow equalizing sleeve is connected with an oxygen source, the mixing generating pipe is fixedly arranged at the oxygen supply input end of the stable-pressure air outlet device, and the oxygen supply output end of the air outlet device faces to a near space.
Description
Technical Field
The utility model belongs to an oxygen supply device, and particularly relates to a microenvironment dispersion oxygen supply device near human space.
Background
Oxygen is an indispensable gas for human life, and too high or too low concentration of oxygen can cause serious influence on human body. The special anoxic environment in the high altitude area increases the prevalence rate of the altitude diseases, so that the problems of altitude gout, altitude sleep disorder and the like caused by the prevalence rate of the altitude diseases seriously threaten the physical and mental health of people.
In the plateau area, oxygen supply is performed on the closed space in a pure oxygen direct injection mode to supply oxygen in a diffusion mode, so that the whole space in the room reaches the set concentration. The quantity of the dispersion oxygen supply spray ports is limited, so that the concentration is not uniform easily, and the oxygen dispersion effect is poor; in addition, the flow rate of oxygen in the pipe is large, whistle sound is generated at the horn-shaped ejection port, and the noise is too large, so that the work, the study and the life are easily affected.
For nasal inhalation type oxygen supply, a user can select a simple oxygen inhalation hose to be directly inserted into nostrils for use or connected into a breathing mask for use, but the nasal inhalation type oxygen supply can cause inconvenient human body movement/activity under the conditions of study, work, sleep and the like, increase uncomfortable feeling in the use process, and easily cause the conditions of falling off, winding neck and the like; the oxygen supply distance is too short, and serious consequences of nasal mucosa damage are easy to occur.
Disclosure of Invention
The utility model aims to provide a microenvironment dispersion oxygen supply device in a near-human space, which improves the oxygen supply utilization efficiency and effectively relieves the problem of poor experience of the existing nasal inhalation type oxygen supply.
A local dispersion oxygen supply device comprises an oxygen mixing device and a pressure-stabilizing air outlet device which is arranged at an oxygen supply output end fixed on the oxygen mixing device; the oxygen mixing device further comprises a gas mixing pipe which is fixedly arranged at the oxygen supply input end of the stable-pressure air outlet device and a driving air source which is fixedly arranged on the gas mixing pipe and used for introducing air, the gas mixing pipe further comprises a flow equalizing sleeve, and an air source pipe and a mixing generating pipe which are connected to the flow equalizing sleeve and mutually communicated with the flow equalizing sleeve, the driving air source is fixedly arranged on the air source pipe, the flow equalizing sleeve is connected with an oxygen source, the mixing generating pipe is fixedly arranged at the oxygen supply input end of the stable-pressure air outlet device, and the oxygen supply output end of the stable-pressure air outlet device faces to a near-human space.
Preferably, the gas mixing pipe of the oxygen mixing device is provided with an drift diameter section, a convergent section, a throat section, a divergent section and a drift diameter section, and the ports of the drift diameter section are in direct connection.
Preferably, the air mixing pipe of the oxygen mixing device comprises a wind source pipe, a flow equalizing sleeve and a mixing generating pipe which are sequentially and continuously distributed along the same horizontal axis and are integrally in a hollow communication structure.
Preferably, the flow equalizing sleeve further comprises a flow equalizing ring, a main guide pipe which is communicated with the flow equalizing ring and used for introducing an oxygen source, and a plurality of drainage injection holes which are uniformly arranged along the periphery of the inner wall of the cavity of the flow equalizing ring.
Preferably, in order to enhance the gas mixing effect, the flow equalizing ring is positioned at the throat of the gas mixing pipe.
Preferably, in order to prevent the mixed gas from escaping from the drift diameter side of the pipe body of the drift diameter reducing section, the included angle between the axis of the drainage jet hole and the peripheral line of the pipe body of the oxygen mixing device is less than ninety degrees, and the air inlet direction of the drainage jet hole is consistent with the air inlet direction of the oxygen mixing device
Preferably, the mixing generating tube further comprises a mixing tube which is gradually expanded with the flow equalizing sleeve and an external path connecting port which is fixedly connected with the pressure stabilizing air outlet device.
Preferably, the pressure-stabilizing air outlet device comprises an air outlet box body, the air outlet box body is provided with a connecting port for connecting the oxygen mixing device, a pressure-equalizing air deflector is arranged in the pressure-stabilizing air outlet device, the pressure-equalizing air deflector is obliquely arranged in the air outlet box body, and the pressure-equalizing air deflector gradually decreases from the connecting port side to the far end of the oxygen mixing device.
Preferably, in order to reduce turbulence in the box body, a gradually-flaring is arranged in the connecting port of the air outlet box body, and one end of the pressure equalizing air deflector is connected with the upper end of the gradually-flaring.
Preferably, a grille is arranged at the air outlet of the pressure-stabilizing air outlet device.
Compared with the prior art, the utility model has the following beneficial technical effects:
the utility model relates to a local dispersion oxygen supply device, which comprises an oxygen mixing device and a pressure-stabilizing air outlet device, wherein the pressure-stabilizing air outlet device is arranged at an oxygen supply output end fixed on the oxygen mixing device; the oxygen mixing device further comprises a gas mixing pipe which is fixedly arranged at the oxygen supply input end of the stable-pressure air outlet device and a driving air source which is fixedly arranged on the gas mixing pipe and used for introducing air, the gas mixing pipe further comprises a flow equalizing sleeve, and an air source pipe and a mixing generating pipe which are connected to the flow equalizing sleeve and mutually communicated with the flow equalizing sleeve, the driving air source is fixedly arranged on the air source pipe, the flow equalizing sleeve is connected with an oxygen source, the mixing generating pipe is fixedly arranged at the oxygen supply input end of the stable-pressure air outlet device, and the oxygen supply output end of the stable-pressure air outlet device faces to a near-human space. Connecting a flow equalization sleeve with an oxygen source, mixing the oxygen by an oxygen mixing device, sending oxygen-enriched gas into a pressure stabilization air outlet device by utilizing a Venturi effect, the self pressure of the oxygen source and a negative pressure effect brought by driving a wind source to rotate, and enabling the pressure stabilization air outlet device to acquire static pressure by establishing pipe wall impact perpendicular to the air movement direction, so as to adjust turbulent gas into pressure stabilization air flow and uniformly outlet air; and outputting static pressure converted by dynamic pressure from an air outlet of the pressure-stabilizing air outlet device, uniformly distributing and transmitting the oxygen-enriched gas farther to reach a personalized air supply environment inhalable region of the near space, and forming an oxygen-enriched region. The device realizes local space diffusion oxygen supply, improves the oxygen supply utilization efficiency compared with a pure oxygen direct injection mode, has high oxygen-enriched gas availability and low energy consumption, effectively relieves the problem of poor experience of the existing nasal inhalation type oxygen supply, and is an effective means for realizing local oxygen enrichment of near space.
Preferably, an oxygen mixing device and a pressure stabilizing air outlet device are adopted to mix oxygen-enriched gas, so that the microenvironment of the local oxygen-enriched region in the inhalable region of the near space is realized, the oxygen utilization efficiency is improved, the oxygen waste is reduced, and the economy is higher; the oxygen mixing device and the pressure stabilizing air outlet device are adopted, so that the nasal inhalation type oxygen supply hose is different from the traditional nasal inhalation type oxygen supply hose, the use convenience is improved, and the nasal inhalation type oxygen supply experience is optimized; the design that the included angle between the axis of the drainage injection hole and the peripheral line of the oxygen mixing device pipe body is smaller than ninety degrees is adopted, so that the mixed gas is effectively prevented from escaping; the design of the pressure equalizing air deflector is adopted, so that the uneven oxygen concentration in the local area of the oxygen supply port is improved, the uniform air outlet mode is adopted, the air flow rate is effectively reduced, and the noise reduction function is realized; the wind outlet box body adopts a gradually-expanding port connection design, so that the turbulence in the wind outlet box body is effectively reduced.
Drawings
FIG. 1 is a schematic view of a partial dispersion oxygen supply apparatus according to an embodiment of the present utility model.
Fig. 2 is a cross-sectional view of an oxygen mixing device in accordance with an embodiment of the present utility model.
In the figure, 1, an oxygen mixing device; 2. a pressure stabilizing air outlet device; 3. a wind source tube; 4. a flow equalizing sleeve; 5. a mixing generating tube; 6. an air outlet; 7. fixing bolt wire holes; 8. a gradually expanding mixing tube; 9. a drift diameter connection port; 10. a main leading hole; 11. a flow equalizing ring; 12. drainage jet holes; 13. a wind outlet box body; 14. equalizing air deflector; 15. and (5) flaring gradually.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in FIG. 1, the local dispersion oxygen supply device comprises an oxygen mixing device 1 and a pressure-stabilizing air outlet device 2 which is arranged at an oxygen supply output end fixed on the oxygen mixing device 1; the oxygen mixing device 1 further comprises a gas mixing pipe which is fixedly arranged at the oxygen supply input end of the stable-pressure air outlet device 2 and a driving air source which is fixedly arranged on the gas mixing pipe and used for introducing air, the gas mixing pipe further comprises an equalizing sleeve 4, an air source pipe 3 and a mixing generating pipe 5 which are connected to the equalizing sleeve 4 and mutually communicated with the equalizing sleeve, the driving air source is fixedly arranged on the air source pipe 3, the equalizing sleeve 4 is connected with an oxygen source, the mixing generating pipe 5 is fixedly arranged at the oxygen supply input end of the stable-pressure air outlet device 2, and the oxygen supply output end of the stable-pressure air outlet device 2 faces to a near space. When the device is used, the main guide tube 10 of the flow equalizing sleeve 4 is connected with an oxygen source, after oxygen is mixed by the air source tube 3 and the mixing generation tube 5 which are mutually communicated with the flow equalizing sleeve through the oxygen mixing device 1, oxygen-enriched gas is sent into the stable-pressure air outlet device 2 by utilizing the Venturi effect, the self pressure of the oxygen source and the negative pressure effect caused by driving the air source to rotate, the stable-pressure air outlet device 2 acquires static pressure by establishing tube wall impact perpendicular to the air movement direction, and turbulent gas is regulated into stable-pressure air flow and uniform air outlet; the static pressure converted by dynamic pressure is output from the air outlet 6 of the pressure stabilizing air outlet device 2, so that the oxygen-enriched air is uniformly distributed and transmitted farther to reach the personalized air supply environment inhalable region of the near space to form an oxygen-enriched region. The device realizes local space diffusion oxygen supply, improves the oxygen supply utilization efficiency compared with a pure oxygen direct injection mode, has high oxygen-enriched gas availability and low energy consumption, effectively relieves the problem of poor experience of the existing nasal inhalation type oxygen supply, and is an effective means for realizing local oxygen enrichment of near space.
As shown in fig. 2, the gas mixing tube of the oxygen mixing device 1 is provided with an drift diameter section, a convergent section, a throat section, a divergent section and a drift diameter section, which are tightly connected in a direct connection mode; the air source tube (3), the flow equalization sleeve (4) and the mixing generation tube (5) are sequentially and continuously arranged along the same horizontal axis and are integrally hollow. The air source pipe 3 is fixedly provided with a driving air source, and the driving source adopts a pressure air source or a driving fan; the specific air source adopts air pressure devices such as a purified pressure pump and the like.
The air source pipe 3 is provided with an opposite port on the pipe body path side, and is connected with a driving fan through a fixed bolt wire hole 7, and the driving fan is used for providing the pressure of input air; meanwhile, a filter device is arranged in the air source pipe 3 and is used for filtering and purifying air.
The flow equalizing sleeve 4 of the oxygen mixing device 1 further comprises a flow equalizing ring 11, a main guide pipe 10 which is communicated with the flow equalizing ring 11 and is used for introducing oxygen sources, and a plurality of drainage injection holes 12 which are uniformly arranged along the periphery of the inner wall of the cavity of the flow equalizing ring 11; the outer pipe wall of the flow equalizing ring 11 is provided with a main guide pipe 10, and the main guide pipe 10 is communicated with a pure oxygen source; the external path connecting port 9 of the mixing generating pipe 5 is connected with an inlet of one end of the stable air outlet device 2.
Specifically, the flow equalization sleeve 4 is provided with a certain angle along the drainage injection holes 12 uniformly arranged on the periphery of the inner wall of the cavity of the flow equalization ring 11, so that gas is convenient to mix and the left side of the gas is effectively prevented from escaping; each drainage jet orifice 12 is communicated with a main guide pipe 10 for introducing oxygen source, and is uniformly arranged along the circumference of the inner wall of the cavity of the flow equalizing ring 11, and jets with fixed angles along the airflow advancing direction; the structure of the body of the different drainage ejection openings 12 is the same. The diameter of the main guide holes is preferably 5-10mm, the number of the holes of the drainage jet holes is preferably 5-12, and the diameter is preferably 1-4mm along the different apertures of the guide holes at the inner side and the outer side of the flow equalizing ring.
The included angle between the axis of the drainage jet orifice 12 and the peripheral line of the oxygen mixing device 1 is smaller than 90 degrees, and the air inlet direction of the drainage jet orifice 12 is consistent with the air inlet direction of the oxygen mixing device 1; the external path connection port 9 of the mixing generating pipe 5 is connected with the inlet of the stable air outlet device 2.
The bottom of the pressure-stabilizing air outlet device 2 can be provided with a human body induction module for inducing personnel in a set range, and the human body induction device is connected with an oxygen source controller and used for controlling the starting and closing of an oxygen source. The pressure stabilizing air outlet device 2 is arranged at the upper end of a bedroom bed body or on the back wall of a living room sofa, and the mounting height of the pressure stabilizing air outlet device 2 is set according to the air outlet of the pressure stabilizing air outlet device 2, so that the air outlet oxygen of the pressure stabilizing air outlet device 2 can cover the neck of a person or the upper part of a sofa area during sleeping, and when the person is on the sofa or sleeping, oxygen can be timely supplied, the pressure stabilizing air outlet device is particularly suitable for rooms in a plateau area, and the consumption of oxygen can be greatly reduced. The human body sensing module is preferably a pyroelectric infrared sensing module or a human body existence sensing module.
The oxygen mixing device 1 and the pressure-stabilizing air outlet device 2 are matched for use, local oxygen enrichment of a designated area of a near-human space microenvironment is met, the diameter and the length of a pipe body of the oxygen mixing device 1 are changed, the diameter and the length of a carried flow-equalizing air outlet of the pressure-stabilizing air outlet device 2 are adjusted, the transportation influence range of oxygen-enriched gas can be adjusted, and the purpose of changing local oxygen enrichment of the designated area microenvironment in a dispersion type oxygen supply device of the oxygen mixing device 1 and the pressure-stabilizing air outlet device 2 is achieved.
The pressure-stabilizing air outlet device 2 comprises an air outlet box body 13, one end of the air outlet box body 13 is provided with a connecting port for connecting an external diameter connecting port 9 of the mixing generation pipe 5 of the oxygen mixing device 1, the pressure-stabilizing air outlet device 2 is internally provided with a pressure-equalizing air deflector 14, the pressure-equalizing air deflector 14 is obliquely arranged in the air outlet box body 13, the pressure-equalizing air deflector 14 gradually decreases from one end to the other end of the connecting port of the oxygen mixing device 1, a gradual descending pipeline is formed in the pressure-stabilizing air outlet device 2, and mixed oxygen can be uniformly guided out at an air outlet of the pressure-stabilizing air outlet device 2, so that accurate oxygen enrichment in a local range of a near-human space microenvironment is formed. The gradual descending pipeline formed by the pressure equalizing air deflector is preferably wedge-shaped and round table-shaped.
The air outlet 6 of the pressure stabilizing air outlet device 2 is provided with a grid for further uniform diffusion of the oxygen-enriched gas. The connector of the air outlet box body 13 is internally provided with a gradually-expanding opening 15, one end of the pressure-equalizing air deflector 14 is connected with the upper end of the gradually-expanding opening 15, the gradually-expanding opening 15 can reduce turbulence and stabilize air speed, after the gas mixed by the oxygen mixing device 1 enters the stable air outlet device 2, the gas is diffused at the air outlet box body 13 under the action of the gradually-expanding opening 15, and meanwhile, the gas is diffused towards the other end in the air outlet box body 13 under the action of the pressure-equalizing air deflector 14, and uniformly flows out from the air outlet box body 13 towards the air outlet 6 close to the human space, so that the purpose of uniform diffusion is achieved.
The stable pressure air outlet device 2 comprises a mixed gas pipeline connecting interface, a gradual descending pipeline and grid air outlets which are all arranged on the inner side of an air outlet of the stable pressure air outlet device 2, wherein a connecting port at one end of an air outlet box body 13 is connected with an external drift diameter connecting port 9 of a mixing generating pipe 5 of an oxygen mixing device 1, the gradual descending pipeline is connected for uniform air supply, an air supply pipe is gradually contracted along the length direction, and the grid air outlets are arranged at the air outlet 6 of the stable pressure air outlet device 2 and are provided with guide vanes; the blast pipe is a gradual descending pipe of the main body of the air outlet 6, the diameter of the left side of the pipe is preferably 25-70mm, and the diameter of the right side of the pipe is 10-25mm.
The oxygen-enriched gas after mixing is realized by the oxygen mixing device 1 and the pressure-stabilizing air outlet device 2, the oxygen-enriched gas is mixed by the oxygen mixing device and the pressure-stabilizing air outlet device, the microenvironment of the local oxygen-enriched region in the inhalable region of the near-person space is realized, the oxygen utilization efficiency is improved, the oxygen waste is reduced, and the economy is higher; the oxygen mixing device and the pressure stabilizing air outlet device are adopted, so that the nasal inhalation type oxygen supply hose is different from the traditional nasal inhalation type oxygen supply hose, the use convenience is improved, and the nasal inhalation type oxygen supply experience is optimized; the design that the included angle between the axis of the drainage injection hole and the peripheral line of the oxygen mixing device pipe body is smaller than ninety degrees is adopted, so that the mixed gas is effectively prevented from escaping; the design of the pressure equalizing air deflector is adopted, so that the uneven oxygen concentration in the local area of the oxygen supply port is improved, the uniform air outlet mode is adopted, the air flow rate is effectively reduced, and the noise reduction function is realized; the wind outlet box body adopts a gradually-expanding port connection design, so that the turbulence in the wind outlet box body is effectively reduced.
Application of induction type oxygen supply: a human body induction device is added, and a dispersion type oxygen supply facility is automatically controlled according to human body signals; the manual opening device and the manual closing device are improved; the waste of oxygen resources caused by forgetting to turn on and off the equipment is avoided; the single control condition that the equipment is closed according to the condition that the oxygen concentration in the space reaches a set value is optimized; the human-computer intelligent interaction and remote control interaction experience is improved; in the use process, the requirement on space tightness is released, and the air quality is improved when oxygen is used; the device can meet the oxygen enrichment concentration of a designated space when being opened, the oxygen utilization efficiency is improved, the oxygen consumption is reduced, and the oxygen supply time is saved.
Claims (10)
1. The local dispersion oxygen supply device is characterized by comprising an oxygen mixing device (1) and a pressure-stabilizing air outlet device (2) fixed at the oxygen supply output end of the oxygen mixing device (1); the oxygen mixing device (1) comprises a gas mixing pipe which is fixedly arranged at the oxygen supply input end of the pressure stabilizing air outlet device (2) and a driving air source which is fixedly arranged on the gas mixing pipe and used for introducing air, the gas mixing pipe comprises a flow equalizing sleeve (4), an air source pipe (3) and a mixing generating pipe (5), the air source pipe (3) is connected to the flow equalizing sleeve (4) and communicated with the flow equalizing sleeve (4), the driving air source is fixedly arranged on the air source pipe (3), the flow equalizing sleeve (4) is connected with an oxygen source, and the mixing generating pipe (5) is fixedly arranged at the oxygen supply input end of the pressure stabilizing air outlet device (2).
2. A partial dispersion oxygen supply apparatus according to claim 1 wherein the gas mixing tube comprises a drift diameter section, a tapering section, a throat section and a diverging section connected in sequence.
3. A local dispersion oxygen supply device according to claim 1 or 2, characterized in that the gas mixing tube comprises a wind source tube (3), a flow equalizing sleeve (4) and a mixing generating tube (5), and the wind source tube (3), the flow equalizing sleeve (4) and the mixing generating tube (5) are sequentially and continuously arranged along the same horizontal axis and are in a hollow communication structure as a whole.
4. A local dispersion oxygen supply device according to claim 3, characterized in that the flow equalizing sleeve (4) comprises a flow equalizing ring (11), a main guide tube (10) which is communicated with the flow equalizing ring (11) and is used for introducing oxygen source, and a plurality of flow guiding injection holes (12) which are uniformly arranged along the circumference of the inner wall of the cavity of the flow equalizing ring (11).
5. A device for local dispersion oxygen supply as claimed in claim 4, characterized in that the flow equalizing ring (11) is located at the throat of the gas mixing tube.
6. A device according to claim 4 or 5, characterized in that the angle between the axis of the drainage jet (12) and the circumference of the tube of the oxygen mixing device (1) is smaller than ninety degrees, and the direction of the inlet air of the drainage jet (12) is kept consistent with the direction of the inlet air of the oxygen mixing device (1).
7. A local dispersion oxygen supply device according to claim 3, characterized in that the mixing generating tube (5) comprises an drift diameter connecting port (9) and a mixing tube (8) which is gradually expanded with the flow equalizing sleeve (4), and the drift diameter connecting port (9) is fixedly connected with the pressure stabilizing air outlet device (2).
8. The local dispersion oxygen supply device according to claim 1, characterized in that the pressure stabilizing air outlet device (2) comprises an air outlet box body (13), the air outlet box body (13) is provided with a connecting port for connecting the oxygen mixing device (1), a pressure equalizing air deflector (14) is arranged in the pressure stabilizing air outlet device (2), the pressure equalizing air deflector (14) is obliquely arranged in the air outlet box body (13), and the pressure equalizing air deflector (14) gradually decreases from the connecting port side to the far end of the oxygen mixing device (1).
9. The local dispersion oxygen supply device according to claim 8, wherein a gradually expanding mouth (15) is arranged in the connecting mouth of the air outlet box body (13), and one end of the pressure equalizing air deflector (14) is connected with the upper end of the gradually expanding mouth (15).
10. A local dispersion oxygen supply device according to claim 1, characterized in that a grille is provided at the outlet (6) of the oxygen supply output of the pressure-stabilizing air outlet device (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223556117.7U CN219120728U (en) | 2022-12-29 | 2022-12-29 | Local diffusion oxygen supply device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223556117.7U CN219120728U (en) | 2022-12-29 | 2022-12-29 | Local diffusion oxygen supply device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7390084B1 (en) * | 2023-09-06 | 2023-12-01 | 株式会社シェルタージャパン | Air purification equipment and air purification systems |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7390084B1 (en) * | 2023-09-06 | 2023-12-01 | 株式会社シェルタージャパン | Air purification equipment and air purification systems |
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