Air and oxygen mixed air duct structure

Abstract

The utility model discloses an air and oxygen mixing air duct structure, which belongs to the technical field of medical instruments and comprises an oxygen mixing cavity base, a turbine is mounted at the inner end of the oxygen mixing cavity base through a turbine upper support and a turbine lower support, an air inlet is arranged on one side of the oxygen mixing cavity base, and an air outlet is arranged on the other side of the oxygen mixing cavity base. An oxygen inlet is formed in the other side, close to the air inlet, of the oxygen mixing cavity base, an air and oxygen mixing area is arranged in the oxygen mixing cavity base and matched with the oxygen inlet and the air inlet, and an oxygen mixing cavity upper cover is arranged at the upper end of the oxygen mixing cavity base. The device can effectively ensure that the actual oxygen concentration is close to the set oxygen concentration as much as possible, the precision of the oxygen concentration is improved, the phenomena that the oxygen concentration is reduced and the actual oxygen concentration is far lower than the set oxygen concentration due to the fact that a fan sucks more air from an air inlet when the oxygen concentration is high are avoided, and meanwhile the oxygen mixing working effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, and particularly relates to an air-oxygen mixing air duct structure. BACKGROUND

[0002] The high-flow respiratory humidification therapeutic instrument is a new type of oxygen therapy instrument, and its safety and efficacy are gradually recognized. Compared with ordinary oxygen therapy, it has better oxygenation improvement effect. Compared with the non-invasive ventilator, its significant advantages lie in comfort, tolerance and compliance. The high-flow respiratory humidification therapeutic instrument can continuously provide the patient with a controllable and relatively constant oxygen concentration (21%~100%).

[0003] In the prior art, the turbine air duct structure with the application publication number CN214274049U includes a shell with a containing cavity and a turbine fan, a partition plate is arranged in the shell, and the containing cavity is divided into a first cavity and a second cavity by the partition plate; a guide structure is arranged in the second cavity, the guide structure divides the second cavity into a first flow channel, a second flow channel and a mounting cavity, the turbine fan is assembled in the mounting cavity, the shell is provided with a first air inlet and a second air inlet that respectively communicate with the first flow channel and the second flow channel, the partition plate is provided with a first through hole that communicates with the first flow channel and the first cavity and a second through hole that communicates with the second flow channel and the first cavity, the partition plate is also provided with an air inlet that communicates with the air inlet end of the turbine fan, and the shell is provided with an air outlet that communicates with the air outlet end of the turbine fan. The utility model can fully mix the gas on one hand and reduce the noise on the other hand, and the utility model is also provided with a damping pad for damping.

[0004] The applicant found that the above-mentioned scheme has certain deficiencies. When the device works, the air and oxygen flows flow through the same chamber to mix the gas flow, the mixing effect is general, the fully mixed effect cannot be achieved, the oxygen mixing is insufficient, and when the oxygen concentration is high, the oxygen concentration accuracy may be inaccurate, the oxygen concentration is reduced, and the actual oxygen concentration is lower than the set oxygen concentration. UTILITY MODEL CONTENTS

[0005] In order to make up for the above-mentioned deficiencies, the utility model provides an air-oxygen mixing air duct structure, which aims to improve the problem that when the device works, the air and oxygen flows flow through the same chamber to mix the gas flow, the mixing effect is general, the fully mixed effect cannot be achieved, the oxygen mixing is insufficient, and when the oxygen concentration is high, the oxygen concentration accuracy may be inaccurate, the oxygen concentration is reduced, and the actual oxygen concentration is lower than the set oxygen concentration.

[0006] The utility model discloses an air -oxygen mixed air duct structure, including oxygen mixing cavity base, the oxygen mixing cavity base inner end passes through turbine upper support and turbine lower support and is installed with turbine, the oxygen mixing cavity base one side is provided with air inlet, the oxygen mixing cavity base is close to the other side of air inlet and is provided with oxygen inlet, the oxygen mixing cavity base in cooperation oxygen inlet and air inlet is provided with air -oxygen mixing area, the oxygen mixing cavity base upper end is provided with oxygen mixing cavity upper cover.

[0007] In the preferred technical scheme of the utility model, the first air duct wall is obliquely installed on the inner side of the oxygen mixing cavity base, the first air duct wall is arranged on one side of the air inlet, the second air duct wall is obliquely installed on the inner wall of the side of the oxygen mixing cavity base away from the oxygen inlet, and the second air duct wall is connected with the fourth air duct wall at the other end.

[0008] In the preferred technical scheme of the utility model, the first air duct wall is curved, the fourth air duct wall is arranged in an S shape, the inner wall of the oxygen mixing cavity base close to the air inlet and the curved first air duct wall and the second air duct wall cooperate with the first air duct wall to form a long air duct, the fourth air duct wall cooperates with the inner wall of the oxygen mixing cavity base close to the oxygen inlet and the first air duct wall to form an air -oxygen mixing area, and the fourth air duct wall and the inner wall of the oxygen mixing cavity base form a narrow air duct.

[0009] In the preferred technical scheme of the utility model, the first air duct wall and the second air duct wall are installed with sound-absorbing flexible members on one side, the sound-absorbing flexible members are made of polyurethane, polypropylene or other materials, and the sound-absorbing flexible members can play a role in resistive noise reduction.

[0010] In the preferred technical scheme of the utility model, the second air duct wall and the fourth air duct wall are connected with an extension air duct wall, the inner wall of the side of the oxygen mixing cavity base close to the oxygen inlet is obliquely installed with an auxiliary air duct wall, the auxiliary air duct wall is arranged in an arc shape, the extension air duct wall is installed at the connection between the second air duct wall and the fourth air duct wall, and the auxiliary air duct wall arranged in an arc shape increases the number of times and the effect of blocking the air entering the oxygen mixing cavity base, so that the resistance is improved, and the accuracy of the oxygen concentration is further improved.

[0011] In the preferred technical scheme of the utility model, the oxygen mixing cavity base one side cooperation turbine is provided with turbine air outlet and turbine air outlet is provided with turbine air outlet sealing pad.

[0012] In the preferred technical scheme of the utility model, the oxygen mixing cavity base one side cooperation turbine is provided with turbine air outlet and turbine air outlet is provided with turbine air outlet sealing pad.

[0013] In the preferred technical scheme of the utility model, the oxygen mixing cavity base one side cooperation turbine is provided with turbine air outlet and turbine air outlet is provided with turbine air outlet sealing pad.

[0014] The utility model discloses an advantageous effect is: the utility model discloses a kind of air-oxygen mixing air duct structures by above design, when using, by the action of turbine, air and oxygen enter into oxygen mixing cavity base by air inlet and oxygen inlet, by the cooperation of first air passage wall, second air passage wall and fourth air passage wall Setting air barrier in entering oxygen mixing cavity base, and can be further increased by extending air passage wall cooperation arc-shaped setting auxiliary air passage wall the air barrier times and effect of air barrier in entering oxygen mixing cavity base, so that long air passage can be more effective to air The resistance effect of, so that the inhaled air amount reduces, simultaneously oxygen flow collision using air-oxygen mixing area position makes that oxygen mixes more fully, simultaneously another resistance is generated to air, effectively reduce the inhaled air.The device can more effectively guarantee that actual oxygen concentration is as close as possible to set oxygen concentration, improve the precision of oxygen concentration, avoid the phenomenon that when high oxygen concentration, air blower inhales more air from air inlet, and cause oxygen concentration reduction, actual oxygen concentration will be much lower than set oxygen concentration, simultaneously oxygen mixing work effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiments, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, on the premise of not paying creative labor, can also obtain other related drawings according to these drawings.

[0016] Figure 1 It is the structure schematic diagram of the air-oxygen mixing air duct structure provided by the embodiments of the utility model;

[0017] Figure 2 It is the structure schematic diagram of the air-oxygen mixing air duct structure provided by the embodiments of the utility model;

[0018] Figure 3 It is another internal structure schematic diagram provided by the embodiments of the utility model;

[0019] Figure 4 It is the internal overhead view and air path structure schematic diagram of the air-oxygen mixing air duct structure provided by the embodiments of the utility model;

[0020] Figure 5 It is another internal overhead view and air path structure schematic diagram of the air-oxygen mixing air duct structure provided by the embodiments of the utility model.

[0021] In the figure: 1, the oxygen mixing cavity upper cover; 2, the oxygen mixing cavity body sealing gasket; 3, the oxygen mixing cavity base; 4, the turbine air outlet sealing gasket; 5, the air inlet sealing gasket; 6, the turbine upper support; 7, the turbine; 8, the turbine lower support; 9, the oxygen inlet sealing gasket; 10, the sound-absorbing flexible piece; 11, the upper cover positioning hole; 12, the turbine upper support positioning column; 13, the turbine lower support positioning hole; 14, the base positioning column; 16, the upper cover positioning column; 17, the narrow air channel; 18, the oxygen inlet; 19, the air inlet; 21, the first air channel wall; 22, the second air channel wall; 23, the extended air channel wall; 24, the fourth air channel wall; 25, the auxiliary air channel wall; 26, the air-oxygen mixing area. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Embodiment one:

[0024] Please refer to Figures 1-4 The present application provides a technical scheme: an air-oxygen mixing air channel structure, comprising an oxygen mixing cavity base 3, a turbine 7 being installed in the inner end of the oxygen mixing cavity base 3 through a turbine upper support 6 and a turbine lower support 8, an air inlet 19 being arranged on one side of the oxygen mixing cavity base 3, an oxygen inlet 18 being arranged on the other side of the oxygen mixing cavity base 3 close to the air inlet 19, an air-oxygen mixing area 26 being arranged in the oxygen mixing cavity base 3 in cooperation with the oxygen inlet 18 and the air inlet 19, and an oxygen mixing cavity upper cover 1 being arranged on the upper end of the oxygen mixing cavity base 3.

[0025] In some specific embodiments, a first air channel wall 21 is obliquely installed on the inner side of the oxygen mixing cavity base 3, the first air channel wall 21 being arranged on the side of the air inlet 19, a second air channel wall 22 being obliquely installed on the inner wall of the side of the oxygen mixing cavity base 3 away from the oxygen inlet 18, and the other end of the second air channel wall 22 being connected with a fourth air channel wall 24.

[0026] In some specific embodiments, the first air passage wall 21 is curvedly arranged, the fourth air passage wall 24 is arranged in an S shape, the inner wall of the oxygen mixing cavity base 3 near the air inlet 19 and the curvedly arranged first air passage wall 21 and the second air passage wall 22 and the first air passage wall 21 cooperatively form a long air passage, and the fourth air passage wall 24 cooperates with the inner wall of the oxygen mixing cavity base 3 near the oxygen inlet 18 and the first air passage wall 21 to form an air-oxygen mixing area 26, the fourth air passage wall 24 and the inner wall of the oxygen mixing cavity base 3 form a narrow air passage 17, in operation, air and oxygen enter the oxygen mixing cavity base 3, and the cooperation of the first air passage wall 21, the second air passage wall 22 and the fourth air passage wall 24 makes the long air passage effectively resist the air, so that the inhaled air volume is reduced, and the air-oxygen flow collision at the air-oxygen mixing area 26 position generates a resistance to the air, effectively reducing the air inhalation, avoiding the problem that when the oxygen concentration is high, the air conditioner inhales more air from the air inlet, so that the oxygen concentration is reduced, the actual oxygen concentration is far lower than the set oxygen concentration, and an error is generated, the actual oxygen concentration can be ensured to be as close as possible to the set oxygen concentration, and the oxygen concentration precision is improved.

[0027] In some specific embodiments, the first air passage wall 21 and the second air passage wall 22 are provided with sound-absorbing flexible members 10, the sound-absorbing flexible members 10 are made of polyurethane, polypropylene or the like, and the sound-absorbing flexible members 10 can play a role in resistive noise reduction.

[0028] Embodiment two:

[0029] Please refer to Figures 1-5 The utility model provides a technical scheme; an air-oxygen mixing air duct structure, including oxygen mixing cavity base 3, oxygen mixing cavity base 3 inner end is installed with turbine 7 through turbine upper support 6 and turbine lower support 8, oxygen mixing cavity base 3 one side is provided with air inlet 19, oxygen mixing cavity base 3 is provided with oxygen inlet 18 on the side near air inlet 19, oxygen mixing cavity base 3 is provided with air-oxygen mixing area 26 in cooperation with oxygen inlet 18 and air inlet 19, oxygen mixing cavity base 3 upper end is provided with oxygen mixing cavity upper cover 1, oxygen mixing cavity base 3 inner side is obliquely installed with first air passage wall 21, and first air passage wall 21 is arranged on the side of air inlet 19, and oxygen mixing cavity base 3 is obliquely installed with second air passage wall 22 on the inner wall of the side away from oxygen inlet 18, and second air passage wall 22 is connected with fourth air passage wall 24 on the other end, and the connecting place of second air passage wall 22 and fourth air passage wall 24 is installed with extension air passage wall 23, and oxygen mixing cavity base 3 is obliquely installed with auxiliary air passage wall 25 on the inner wall of the side near oxygen inlet 18, and auxiliary air passage wall 25 is arranged in an arc shape, and simultaneously the connecting place of second air passage wall 22 and fourth air passage wall 24 can be installed with extension air passage wall 23, and the arc-shaped auxiliary air passage wall 25 cooperatively increases the blocking times and effects of the air blocking into the oxygen mixing cavity base 3, so that the resistance is improved, and the oxygen concentration precision is further improved.

[0030] In some specific embodiments, the oxygen mixing cavity base 3 is provided with a turbine outlet on one side matched with the turbine 7, and the turbine outlet is provided with a turbine outlet sealing pad 4.

[0031] In some specific embodiments, the oxygen inlet 18 is provided with an oxygen inlet sealing pad 9, the air inlet 19 is provided with an air inlet sealing pad 5, the turbine outlet sealing pad 4, the air inlet sealing pad 5 and the oxygen inlet sealing pad 9 are all flexibly arranged, the turbine outlet sealing pad 4, the air inlet sealing pad 5 and the oxygen inlet sealing pad 9 are all made of flexible materials such as silica gel, and they respectively seal the three inlets to ensure the oxygen mixing efficiency of the whole oxygen mixing cavity.

[0032] In some specific embodiments, the oxygen mixing cavity base 3 is provided with an upper cover positioning column 16 at the upper end, the turbine upper support 6 is installed on the upper end of the turbine 7, the turbine lower support 8 is installed on the bottom end of the turbine 7, the turbine upper support 6 is provided with a turbine upper support positioning column 12 at the upper end, the oxygen mixing cavity upper cover 1 is provided with a plurality of upper cover positioning holes 11 at the bottom end matched with the turbine upper support positioning column 12 and the upper cover positioning column 16, the oxygen mixing cavity base 3 is provided with a base positioning column 14 at the inner end, the turbine lower support 8 is provided with a turbine lower support positioning hole 13 at the bottom end matched with the base positioning column 14, the oxygen mixing cavity body sealing pad 2 is arranged between the oxygen mixing cavity upper cover 1 and the oxygen mixing cavity base 3, the oxygen mixing cavity body sealing pad 2 can be made of flexible materials such as silica gel, and it can improve the sealing between the air duct wall and the first air duct wall 21, the second air duct wall 22, the extended air duct wall 23, the fourth air duct wall 24 and the auxiliary air duct wall 25, the upper cover positioning column 16 and the turbine upper support positioning column 12 are the same in shape and size, the oxygen mixing cavity upper cover 1 is connected through the plurality of upper cover positioning holes 11 matched with the upper cover positioning column 16 and the turbine upper support positioning column 12, the turbine upper support 6 and the turbine lower support 8 are made of flexible materials such as silica gel, which are used to fix the turbine fan and achieve the effect of reducing vibration and noise, and the other ends of the turbine upper and lower supports are respectively fixed with the oxygen mixing cavity upper cover positioning hole 11 and the base positioning column 14.

[0033] Working principle: when in use, the air and oxygen enter the oxygen mixing cavity base 3 through the air inlet 19 and the oxygen inlet 18 by the action of the turbine 7, the air entering the oxygen mixing cavity base 3 is blocked by the cooperation of the first air duct wall 21, the second air duct wall 22 and the fourth air duct wall 24, and the number and effect of the air blocking into the oxygen mixing cavity base 3 can be further increased by the cooperation of the extended air duct wall 23 and the arc-shaped auxiliary air duct wall 25, so that the long air duct can effectively act on the air to reduce the amount of air inhaled, and the air-oxygen flow collision at the air-oxygen mixing area 26 position can make the oxygen mixing more sufficient, and another resistance to the air can be generated to effectively reduce the air inhaled.

[0034] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.

Claims

1. An air-oxygen mixing duct structure, characterized by comprising: The oxygen mixing cavity base is provided with an air inlet on one side, an oxygen inlet on the other side close to the air inlet, an air-oxygen mixing area inside the oxygen mixing cavity base matched with the oxygen inlet and the air inlet, and an oxygen mixing cavity upper cover on the upper end of the oxygen mixing cavity base.

2. The air-oxygen mixing duct structure according to claim 1, wherein The first air duct wall is obliquely installed on the inner side of the oxygen mixing cavity base, the second air duct wall is obliquely installed on the inner wall of the side of the oxygen mixing cavity base away from the oxygen inlet, and the fourth air duct wall is connected to the other end of the second air duct wall.

3. The air-oxygen mixing duct structure according to claim 2, wherein The first air duct wall is curved, and the fourth air duct wall is S-shaped.

4. The air-oxygen mixing duct structure according to claim 3, wherein The first air duct wall and the second air duct wall are provided with sound-absorbing flexible members on one side.

5. The air-oxygen mixing duct structure according to claim 2, wherein The second air duct wall and the fourth air duct wall are provided with an extended air duct wall at the connection, the auxiliary air duct wall is obliquely installed on the inner wall of the side of the oxygen mixing cavity base close to the oxygen inlet, and the auxiliary air duct wall is arc-shaped.

6. The air-oxygen mixing duct structure according to claim 2, wherein The oxygen mixing cavity base is provided with a turbine outlet matched with the turbine on one side, and the turbine outlet is provided with a turbine outlet sealing gasket.

7. The air-oxygen mixing duct structure according to claim 6, wherein The oxygen inlet is provided with an oxygen inlet sealing gasket, the air inlet is provided with an air inlet sealing gasket, and the turbine outlet sealing gasket, the air inlet sealing gasket, and the oxygen inlet sealing gasket are all flexible.

8. The air-oxygen mixing duct structure according to claim 2, wherein The oxygen mixing cavity base is provided with an upper cover positioning column on the upper end, the turbine upper support is installed on the upper end of the turbine, the turbine lower support is installed on the bottom end of the turbine, the turbine upper support is provided with a turbine upper support positioning column on the upper end, the oxygen mixing cavity upper cover is provided with a plurality of upper cover positioning holes matched with the turbine upper support positioning column and the upper cover positioning column on the bottom end, the oxygen mixing cavity base is provided with a base positioning column on the inner end, and the turbine lower support is provided with a turbine lower support positioning hole matched with the bottom end of the base positioning column.

Images