Airflow distribution and oxygen supply device

Abstract

The utility model discloses an air flow distribution spare and oxygen supply device. Air flow distribution spare is used in gas supply device. The gas supply device has the cylindrical cavity, the air flow distribution spare is located in the cylindrical cavity and is cooperated with the cylindrical cavity, and the cylindrical cavity lateral wall is equipped with the first wall hole. The air flow distribution spare includes first column block, second column block and the connecting piece of connecting first column block with second column block. The first column block is equipped with the first gas hole to the second column block setting. The first column block has the sealing ring, and the connecting piece, the cylindrical cavity inner wall, the first column block, the second column block and the sealing ring cooperation form the first gas cavity that communicates with the first wall hole. The utility model discloses through the setting of first gas cavity, makes the air flow distribution spare of the utility model when assembling to the cylindrical cavity of oxygen supply device, need not consider the alignment of first wall hole and the gas hole on air flow distribution spare.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to an airflow distribution component and an oxygen supply device. Background Technology

[0002] Hospitals are usually equipped with oxygen supply devices to provide oxygen to patients.

[0003] Existing oxygen supply devices typically have two modes: pulse oxygen supply and constant oxygen supply. Pulse oxygen supply mode means that oxygen enters the patient's mouth through the mouthpiece when the patient inhales, and no oxygen flows out of the mouthpiece when the patient is not inhaling. Constant oxygen supply mode means that oxygen always flows out of the mouthpiece regardless of whether the patient is inhaling. Switching between pulse and constant oxygen supply modes mainly involves changing the airflow path within the oxygen supply device. The airflow distribution unit is a crucial component for achieving this change in airflow path.

[0004] However, in existing airflow distribution components, the air passages are usually elongated channels for ease of manufacturing. Therefore, during the assembly process, the air passages on other components need to be precisely aligned with the elongated channels on the airflow distribution component, which increases the assembly difficulty. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model discloses an airflow distribution component and an oxygen supply device, which are easy to assemble.

[0006] The objective of this utility model is achieved through the following technical solution: An airflow distribution component is used in an air supply device, the air supply device having a columnar cavity, the airflow distribution component being located within and cooperating with the columnar cavity, the columnar cavity having a first wall hole on its sidewall; the airflow distribution component includes a first column block, a second column block, and a connector connecting the first column block and the second column block; the first column block has a first air hole facing the second column block; the first column block is fitted with a sealing ring, the connector, the inner wall of the columnar cavity, the first column block, the second column block, and the sealing ring cooperating to form a first air cavity communicating with the first wall hole.

[0007] Furthermore, it also includes a blocking member. The first column has a recessed area on the side away from the second column. The blocking member enters the recessed area and cooperates with the recessed area to form a second air cavity that communicates with the first air hole.

[0008] Furthermore, the connecting member is a vent pipe that enters the recessed area, and the blocking member is a diaphragm; the diaphragm abuts against the outlet of the vent pipe, the diaphragm deforms, and the vent pipe communicates with the second air chamber.

[0009] Furthermore, the diaphragm includes a deformable portion and a fixed portion surrounding the deformable portion, the deformable portion abutting against the vent tube, and the fixed portion being fixed to the first column block.

[0010] Furthermore, the fixing part is an elastic ring, which is sleeved on the outside of the first column block.

[0011] Furthermore, it also includes a third column block, which is disposed on the side of the second column block away from the first column block. The vent pipe extends toward and connects to the third column block. A second air hole is provided on the outer wall of the vent pipe located between the second column block and the third column block, and the second air hole is connected to the air passage of the vent pipe. The vent pipe, the second column block, the third column block, and the columnar cavity cooperate to form a third air cavity. A second wall hole is provided on the side wall of the columnar cavity, and the second wall hole is connected to the third air cavity.

[0012] Furthermore, the sealing ring, the second column, and the third column are all cylindrical with equal radial cross-sections.

[0013] Furthermore, both the second and third pillar blocks have annular grooves on their side walls, and sealing rings are provided inside the annular grooves.

[0014] Furthermore, the first column block, the second column block, the third column block, the sealing ring, and the vent pipe are integrally formed.

[0015] An oxygen supply device includes a housing and a nozzle disposed on the housing. The housing has a cylindrical cavity. The cylindrical cavity has an airflow distribution component as described above. The first wall hole is connected to the nozzle through an air supply channel.

[0016] Compared with the prior art, the beneficial effect of this utility model is that by cooperating with the connector, the inner wall of the columnar cavity, the first column block, the second column block and the sealing ring to form a first air cavity communicating with the first wall hole, the airflow distribution component of this utility model does not need to consider the alignment of the first wall hole and the air hole on the airflow distribution component when it is assembled into the columnar cavity of the oxygen supply device, which facilitates the assembly of the airflow distribution component. Attached Figure Description

[0017] Figure 1 This is a front view of the oxygen supply device of this utility model; Figure 2 yes Figure 1 Sectional view of section AA; Figure 3 yes Figure 2 Enlarged diagram of section B; Figure 4 This is a three-dimensional schematic diagram of a partial structure of the airflow distribution component of this utility model; Figure 5 This is a front view of a partial structure of the airflow distribution component of this utility model; Figure 6 yes Figure 5 A sectional view of section C-C; Figure 7 This is a three-dimensional schematic diagram of the diaphragm of this utility model.

[0018] In the picture: 1-First wall hole; 2-First column; 3-Second column; 4-First vent; 5-Sealing ring; 6-First air chamber; 7-Recessed area; 8-Ventilation tube; 9-Diaphragm; 9a-Deformation part; 9b-Elastic ring; 10-Third column; 11-Second vent; 12-Third air chamber; 13-Second wall hole; 14-Sealing ring; 15-Shell; 16-Nose; 17-Air supply channel; 18-Fourth air chamber. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] Existing air supply devices typically have multiple air channels, which are not machined from a single component. To facilitate the machining of the air channel holes, various air channels are usually machined on multiple different small parts, which are then assembled to form the air supply device's air channels. However, current air channels are usually orifice-shaped, thus requiring high assembly precision between the two parts to achieve air channel alignment, making assembly inconvenient.

[0023] To facilitate the assembly of two parts with air passages, this utility model discloses an airflow distribution component for use in an air supply device. The air supply device of this utility model can be an oxygen supply device, or it can supply other gases such as hydrogen and nitrogen. The following description primarily uses an oxygen supply device as an example.

[0024] like Figures 1 to 3 As shown, this utility model discloses an oxygen supply device, which includes a housing 15 and a suction nozzle 16 disposed on the housing 15. The housing 15 has a cylindrical cavity, within which an airflow distribution component is provided, containing an air passage. The airflow distribution component is located within and cooperates with the cylindrical cavity. A first wall hole 1 is provided on the side wall of the cylindrical cavity, and the first wall hole 1 is connected to the suction nozzle 16 via an air supply channel 17. During use, the oxygen supply device is connected to an oxygen cylinder. When a patient inhales through the suction nozzle 16, oxygen from the oxygen cylinder enters the first wall hole 1 after passing through the air passage in the airflow distribution component. Subsequently, the oxygen is supplied to the suction nozzle 16 via the air supply channel 17, allowing the patient to absorb oxygen through the suction nozzle 16.

[0025] In this utility model, such as Figures 3 to 6 As shown, the airflow distribution component includes a first column block 2, a second column block 3, and a connector connecting the first column block 2 and the second column block 3. The first column block 2 has a first air hole 4 facing the second column block 3, and a sealing ring 5 is fitted over the first column block 2. The connector, the inner wall of the columnar cavity, the first column block 2, the second column block 3, and the sealing ring 5 cooperate to form a first air cavity 6 communicating with the first wall hole 1.

[0026] Therefore, when a patient inhales through the suction nozzle 16, oxygen flows into the first air chamber 6 after passing through the first air hole 4, and then into the first wall hole 1, before entering the suction nozzle 16 through the air supply channel 17. During assembly, the first air chamber 6 allows the airflow distribution component to connect with the first air hole 4, rather than a hole-to-hole connection. The connection is achieved through the first air chamber 6, significantly reducing the assembly difficulty of the airflow distribution component and the columnar cavity, thus facilitating the assembly of the oxygen supply device.

[0027] In the airflow distribution component of this utility model, many technical features, such as the structure of the connecting member and the shape of the second column 3, have multiple implementations. Below, for each of the many technical features, including the second column 3, one implementation is mainly selected for detailed description. The embodiment in which this implementation is located is referred to as this embodiment. Other implementations of the many features, including the second column 3, are referred to as other embodiments, which are briefly described below.

[0028] In this embodiment, as Figure 4 As shown, to reduce the volume of the airflow distribution component, the first column 2 and the second column 3 are usually spaced relatively close together. However, this results in a smaller diameter for the first wall hole 1, which is not conducive to oxygen flow. To solve this problem, in this embodiment, the first column 2 and the sealing ring 5 form a stepped surface, with the stepped surface extending away from the second column 3. The distance between the first column 2 and the second column 3 is smaller than the diameter of the first wall hole 1. The distance between the second column 3 and the sealing ring 5 is defined as the first distance, with the first air chamber 6 located near the first wall hole 1. The distance between the first column 2 and the second column 3 is defined as the second distance, with the first air chamber 6 located near the connector. Due to the stepped surface, the second distance is smaller than the first distance, and also smaller than the diameter of the first wall hole 1. Therefore, by using the stepped surface, this invention allows the first wall hole 1 to have a larger diameter for oxygen flow while maintaining a smaller distance between the first column 2 and the second column 3, even when the second distance is greater than or equal to the diameter of the first wall hole 1. In other embodiments, to reduce the volume of the airflow distribution component, the plane of the first column 2 facing the second column 3 and the plane of the sealing ring 5 facing the second column 3 can also be on the same plane, but in this case the diameter of the first wall hole 1 is smaller.

[0029] In this embodiment, as Figure 3 and Figure 6 As shown, to facilitate oxygen flow into the first vent 4, the airflow distribution component also includes a blocking component. A recessed area 7 is provided on the side of the first column 2 away from the second column 3, and the blocking component enters the recessed area 7. However, for ease of fixation, part of the blocking component is located within the recessed area 7, and part is located outside the recessed area 7. The part of the blocking component outside the recessed area 7 is used to fix it to the first column 2. The blocking component and the recessed area 7 cooperate to form a second air cavity communicating with the first vent 4. This invention forms a second air cavity through the arrangement of the blocking component and the recessed area 7, facilitating the introduction of oxygen into the first vent 4. Simultaneously, because the blocking component enters the recessed area 7, the volume of the airflow distribution component does not significantly increase. In other embodiments, oxygen can also be introduced into the first vent 4 by connecting a flexible hose.

[0030] In this embodiment, as Figure 3 and Figure 6As shown, the connector is a vent pipe 8, which extends into the recessed area 7. Oxygen flows into the second air chamber through the vent pipe 8, and then through the first air hole 4, the first air chamber 6, the first wall hole 1, and the air supply channel 17 into the suction nozzle 16. The blocking component is a deformable diaphragm 9, which abuts against the outlet of the vent pipe 8. When the diaphragm 9 deforms, the vent pipe 8 communicates with the second air chamber. Among the other components of the oxygen supply device, there is a fourth air chamber 18, which is located on the side of the diaphragm 9 away from the vent pipe 8. The gas pressure in the fourth air chamber 18 is variable. Specifically, when the gas pressure in the fourth air chamber 18 is equal to the gas pressure in the vent pipe 8, the diaphragm 9 is in its normal state. At this time, the diaphragm 9 abuts against the outlet of the vent pipe 8, the vent pipe 8 is closed by the diaphragm 9, and the vent pipe 8 is separated from the second air chamber. When the oxygen supply device is in pulse oxygen supply mode, if the diaphragm 9 is in its normal state, corresponding to the patient not inhaling through the mouthpiece 16, no oxygen will flow out of the mouthpiece 16, avoiding oxygen waste. However, when the patient inhales through the mouthpiece 16, the pressure in the fourth air chamber 18 decreases due to other air passages within the oxygen supply device. Therefore, under the pressure of oxygen in the ventilation tube 8, the diaphragm 9 is deformed. Since the ventilation tube 8 is connected to the second air chamber, oxygen can flow into the mouthpiece 16. When the oxygen supply device is in normal oxygen supply mode, by changing the direction of oxygen within the oxygen supply device, the gas pressure in the fourth air chamber 18 is always lower than the oxygen pressure in the ventilation tube 8. Regardless of whether the patient inhales through the mouthpiece 16, the diaphragm 9 remains deformed. This invention, through the design of the ventilation tube 8 and the diaphragm 9, achieves the function of preventing oxygen from flowing out of the mouthpiece 16 when the patient is not inhaling, i.e., the pulse function. In other embodiments, a manual opening and closing valve may also be provided on the first air hole 4. When the opening and closing valve is manually closed, oxygen cannot flow into the suction nozzle 16.

[0031] In this embodiment, as Figure 3 and Figure 7 As shown, the diaphragm 9 includes a deformable portion 9a and a fixing portion surrounding the deformable portion 9a. The deformable portion 9a and the fixing portion are connected by a U-shaped elastic portion, and the deformable portion 9a is also elastic and easily deformable. The deformable portion 9a abuts against the vent pipe 8, and the fixing portion is fixed to the first column block 2. This invention, through the provision of the deformable portion 9a and the fixing portion, allows for rapid assembly of the vent pipe 8 and the diaphragm 9. In other embodiments, the diaphragm 9 may also be a thin sheet.

[0032] In this embodiment, as Figure 3 and Figure 7As shown, the fixing part is an elastic ring 9b, which is sleeved on the outside of the first pillar block 2. That is, when it is necessary to assemble the diaphragm 9 with the first pillar block 2, the elastic ring 9b is stretched by its elasticity and sleeved on the outer side of the outer wall of the first pillar block 2. The elastic ring 9b is stably fixed to the first pillar block 2 through its elastic force. This invention facilitates the assembly of the diaphragm 9 with the first pillar block 2 by using an elastic ring 9b as the fixing part. In other embodiments, the fixing part can also be a metal part, and the fixing part is connected to the first pillar block 2 by welding.

[0033] In this embodiment, as Figures 4 to 6 As shown, the airflow distribution component also includes a third column block 10, which is located on the side of the second column block 3 away from the first column block 2. A vent pipe 8 extends towards and connects to the third column block 10, with the end of the vent pipe 8 connected to the third column block 10 closed. A second air hole 11 is provided on the outer wall of the vent pipe 8 located between the second column block 3 and the third column block 10, and the second air hole 11 communicates with the air passage of the vent pipe 8. The vent pipe 8, the second column block 3, the third column block 10, and the columnar cavity cooperate to form a third air chamber 12, which communicates with the vent pipe 8. A second wall hole 13 is provided on the side wall of the columnar cavity, and the second wall hole 13 communicates with the third air chamber 12. This invention, through the provision of the third air chamber 12, makes it easier for the vent pipe 8 to communicate with the second wall hole 13, without needing to consider assembly accuracy. In other embodiments, the second wall hole 13 and the second air hole 11 can also be directly connected via a flexible hose.

[0034] In this embodiment, as Figure 4 and Figure 5 As shown, the sealing ring 5, the second column 3, and the third column 10 are all cylindrical with equal radial cross-sections, and are arranged parallel to each other. The cylindrical cavity is also cylindrical. Therefore, it is relatively easy to assemble the airflow distribution component with the cylindrical cavity. In other embodiments, the sealing ring 5 may also be rectangular, in which case the cylindrical cavity is also a cubic cylindrical cavity.

[0035] In this embodiment, as Figure 4 and Figure 5 As shown, both the second column block 3 and the third column block 10 have annular grooves on their side walls, and sealing rings 14 are installed in the annular grooves. This invention, through the installation of sealing rings 14, allows the airflow distribution component to deform after assembly with the columnar cavity, thus improving the airtightness of the first air cavity 6 and the third air cavity 12. In other embodiments, sealing rings 5, second column blocks 3, and third column blocks 10 can also be configured as elastic components with an interference fit to the columnar cavity, achieving the same effect as sealing rings 14.

[0036] In this embodiment, as Figure 4 and Figure 5As shown, the first column block 2, the second column block 3, the third column block 10, the sealing ring 5, and the vent pipe 8 are integrally formed, which helps to improve the overall structural strength of the airflow distribution component. In other embodiments, the first column block 2, the second column block 3, the third column block 10, the sealing ring 5, and the vent pipe 8 can also be welded together.

[0037] In summary, the airflow distribution component and oxygen supply device of this utility model, with the first air chamber 6, allows the airflow distribution component to connect with the first air hole 4, which is a connection between the hole and the cavity, facilitating the assembly of the oxygen supply device. The stepped surface design allows the first wall hole 1 to have a larger diameter for easy oxygen flow, while maintaining a smaller gap between the first column block 2 and the second column block 3. The blocking component and recessed area 7 facilitate the introduction of oxygen into the first air hole 4 without significantly increasing the volume of the airflow distribution component. The ventilation tube 8 and diaphragm 9 ensure that no oxygen flows from the suction nozzle 16 when the patient is not present. The deformable part 9a and the fixing part allow for quick assembly of the ventilation tube 8 and diaphragm 9. The fixing part, being an elastic ring 9b, facilitates the assembly of the diaphragm 9 with the first column block 2. The third air chamber 12 facilitates easy connection between the ventilation tube 8 and the second wall hole 13. By designing the sealing ring 5, the second column 3, and the third column 10 all to be cylindrical with equal radial cross-sections, assembly of the airflow distribution component with the cylindrical cavity is facilitated. The sealing ring 14 further enhances the airtightness of the first air cavity 6 and the third air cavity 12. Furthermore, the integral molding of the first column 2, second column 3, third column 10, sealing ring 5, and vent pipe 8 contributes to improved overall structural strength of the airflow distribution component.

[0038] It should be emphasized that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. An airflow distribution component for use in an air supply device, the air supply device having a cylindrical cavity, the airflow distribution component being located within and cooperating with the cylindrical cavity, the sidewall of the cylindrical cavity having a first wall hole (1), characterized in that, The airflow distribution component includes a first column block (2), a second column block (3), and a connector connecting the first column block (2) and the second column block (3); The first column (2) is provided with a first air hole (4) facing the second column (3); The first column (2) is covered with a sealing ring (5). The connector, the inner wall of the columnar cavity, the first column (2), the second column (3) and the sealing ring (5) cooperate to form a first air cavity (6) that communicates with the first wall hole (1).

2. The airflow distribution component according to claim 1, characterized in that, It also includes a blocking component. The first column (2) has a recessed area (7) on the side away from the second column (3). The blocking component enters the recessed area (7) and the blocking component cooperates with the recessed area (7) to form a second air cavity that communicates with the first air hole (4).

3. The airflow distribution component according to claim 2, characterized in that, The connector is a vent pipe (8), which enters the recessed area (7). The blocking member is a diaphragm (9). The diaphragm (9) abuts against the outlet of the vent pipe (8). The diaphragm (9) deforms, and the vent pipe (8) communicates with the second air chamber.

4. The airflow distribution component according to claim 3, characterized in that, The diaphragm (9) includes a deformable part (9a) and a fixed part arranged around the deformable part (9a), the deformable part (9a) abutting against the vent tube (8), and the fixed part being fixed to the first column (2).

5. The airflow distribution component according to claim 4, characterized in that, The fixing part is an elastic ring (9b), which is sleeved on the outside of the first column block (2).

6. The airflow distribution component according to claim 3, characterized in that, It also includes a third column block (10), which is located on the side of the second column block (3) away from the first column block (2). The vent pipe (8) extends toward the third column block (10) and connects to the third column block (10). A second air hole (11) is provided on the outer wall of the vent pipe (8) located between the second column block (3) and the third column block (10). The second air hole (11) is connected to the air passage of the vent pipe (8). The vent pipe (8), the second column block (3), the third column block (10) and the columnar cavity cooperate to form a third air chamber (12). A second wall hole (13) is provided on the side wall of the columnar cavity. The second wall hole (13) is connected to the third air chamber (12).

7. The airflow distribution component according to claim 6, characterized in that, The sealing ring (5), the second column (3) and the third column (10) are all cylindrical with equal radial cross sections.

8. The airflow distribution component according to claim 7, characterized in that, The second column (3) and the third column (10) are provided with annular grooves on their side walls, and sealing rings (14) are provided in the annular grooves.

9. The airflow distribution component according to claim 6, characterized in that, The first column block (2), the second column block (3), the third column block (10), the sealing ring (5) and the vent pipe (8) are integrally formed.

10. An oxygen supply device, comprising a housing (15) and a suction nozzle (16) disposed on the housing (15), wherein the housing (15) contains the cylindrical cavity, characterized in that, The columnar cavity is provided with an airflow distribution component as described in any one of claims 1 to 9, and the first wall hole (1) is connected to the suction nozzle (16) through an air supply channel (17).

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