CN211536073U - Flow guide piece, ventilation device and ventilation treatment equipment - Google Patents

Abstract

The utility model relates to the field of ventilation treatment equipment, and discloses a flow guide, a ventilation device and ventilation treatment equipment. The flow guide includes a tube body defining a lumen and a first nozzle and a second nozzle which are communicated with the lumen and are oppositely arranged, and the lumen is divided into a first nozzle near the first nozzle along the extending direction of the tube body. The lumen and the second lumen near the second nozzle have an included angle between the axial direction of the first lumen and the axial direction of the second lumen. The air guide of the present utility model has an included angle between the axial direction of the first lumen and the axial direction of the second lumen, and when it is applied to a ventilation device, the gas discharged by the fan can be stably introduced into the ventilation assembly Inside, the gas will not generate turbulent flow, eddy current, etc. when entering the ventilation assembly from the fan, which can effectively improve the stability of the airflow in the ventilation assembly, thereby ensuring the stability and reliability of flow monitoring. In addition, the flow guiding member has the advantages of compact and simple structure, low manufacturing cost and good flow guiding performance.

Description

Flow guides, ventilation devices, and ventilation therapy equipment

technical field

The utility model relates to the field of ventilation treatment equipment, in particular to a flow guide, a ventilation device including the flow guide, and a ventilation treatment device including the ventilation device.

Background technique

In ventilation therapy equipment, flow monitoring is a key point in the performance of ventilation therapy equipment, and stable and reliable flow monitoring plays a very important role in patient safety. In order to achieve flow monitoring, it is necessary to collect the flow in the airway. At present, the flow collection is measured by a differential pressure flow sensor, and the stability of the airflow at the collection point is directly related to the stability and reliability of the flow monitoring.

In the existing ventilation therapy equipment, the collection point is usually arranged on the ventilation part connected to the air outlet of the fan, but due to the connection between the ventilation part and the air outlet of the fan at a certain angle, when in use, the gas flowing out from the air outlet of the fan It will directly enter the ventilation part along its original flow direction, and generate turbulent flow, eddy current, etc. in the ventilation part, which will cause the airflow in the ventilation part to be very unstable, thus affecting the flow monitoring. Therefore, under the condition that the structure of the existing fan and the ventilation part is certain, how to improve the stability of the airflow in the ventilation part becomes a key point in optimizing the flow monitoring.

Utility model content

The purpose of the present invention is to provide a flow guide, a ventilation device including the flow guide, and a ventilation treatment device including the ventilation device, so as to solve the above problems.

In order to achieve the above objective, a first aspect of the present utility model provides a flow guide member, the flow guide member includes a pipe body defining a lumen, and a first nozzle and a second pipe communicated with the lumen and disposed opposite to each other. The lumen is divided into a first lumen near the first nozzle and a second lumen near the second nozzle along the extending direction of the pipe body, and the axis of the first lumen There is an included angle between the direction and the axial direction of the second lumen.

Optionally, both the first lumen and the second lumen are cylindrical lumens.

Optionally, the tube body includes an inner tube body and an outer tube body that are coaxially sleeved, and there is a first radial interval between the inner tube body and the outer tube body; and/or

The flow guide includes a mounting seat, and the mounting seat is mounted outside the pipe.

Optionally, the cross-section of the inner tube body and the outer tube body is circular; and/or

The mounting seat includes a ring coaxially sleeved on the outer tube body, and a second radial interval is formed between the ring ring and the outer tube body.

Optionally, the mounting seat includes a positioning member disposed on the annular ring; and/or

The first radial interval, the second radial interval, and the inner diameter of the inner tube body are set such that in the cross section of the flow guide member passing through the annular ring, the inner tube body and the The area of the spaced region between the outer tubes, the area of the spaced region between the annular ring and the outer tube, and the area of the inner region of the inner tube are equal.

A second aspect of the present invention provides a ventilation device, the ventilation device includes a fan, a ventilation assembly and the above-mentioned air guide, the fan includes an air outlet channel and an air outlet communicated with the air outlet channel, and the ventilation device The assembly includes a ventilation cavity and an air intake port communicating with the ventilation cavity, the ventilation assembly is connected to the fan and makes the air intake port communicate with the air outlet, and the air guide is arranged on the air intake In the communication channel between the port and the air outlet, the first orifice of the air guide extends into the air outlet channel so that the first lumen is coaxial with the air outlet channel, and the second tube A port extends into the vent lumen such that the second lumen is coaxial with the vent lumen.

Optionally, an inner wall of the ventilation assembly for defining the ventilation cavity is provided with a first mounting portion for mounting the air guide member.

Optionally, the ventilation device includes a connecting piece, and the air inlet port of the ventilation assembly is connected to the air outlet of the fan through the connecting piece.

Optionally, the connector includes a cavity with openings at both ends and a peripheral wall for defining the cavity, and the air inlet port and the air outlet are respectively inserted into the cavity through the two openings and communicated through the cavity.

A third aspect of the present invention provides a ventilation therapy device, the ventilation therapy device includes a patient interface device, a ventilation pipeline and the above-mentioned ventilation device, one end of the ventilation pipeline is connected to the patient interface device, and the ventilation pipeline is connected to the patient interface device. The other end of the ventilation line is connected to the ventilation assembly.

By adopting the above technical solutions, the air guide of the present invention makes an angle between the axial direction of the first lumen and the axial direction of the second lumen. When it is applied to a ventilation device, the gas discharged by the fan can be discharged It is stably introduced into the ventilation assembly, so that the gas will not generate turbulence, eddy current, etc. when entering the ventilation assembly from the fan, which can effectively improve the stability of the airflow in the ventilation assembly, thereby ensuring the stability and reliability of flow monitoring. In addition, the flow guide of the present invention also has the advantages of compact and simple structure, low manufacturing cost and good flow guide performance.

Other features and advantages of the present invention will be described in detail in the detailed description section that follows.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification, and together with the following specific embodiments, are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the attached image:

1 is a schematic structural diagram of an embodiment of a flow guide in the present invention;

Fig. 2 is a sectional view of the flow guide in Fig. 1;

3 is a perspective view of an embodiment of the ventilation device in the present invention;

Fig. 4 is the exploded view of Fig. 3;

Fig. 5 is the sectional view of Fig. 3;

Fig. 6 is the top view of Fig. 3;

FIG. 7 is a cross-sectional view of FIG. 6 .

Description of reference numerals

10-guiding piece, 11-tube body, 111-first nozzle, 112-second nozzle, 113-first lumen, 114-second lumen, 115-inner tube body, 116-outer tube body , 12-mounting seat, 121-ring, 122-positioning piece, 123-connecting rib, 20-ventilation device, 21-fan, 211-air outlet, 212-air outlet, 213-second annular flange, 22- Ventilation assembly, 221-ventilation cavity, 222-inlet port, 223-first installation part, 224-first annular flange, 225-air outlet port, 23-connector, 231-peripheral wall, 232-second installation part, 233 - Third Mounting Section.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

In the present invention, unless otherwise stated, the directional words used such as "inside and outside" refer to the inside and outside relative to the contour of each component itself.

A first aspect of the present invention provides a flow guide. The flow guide 10 includes a tube body 11 defining a lumen, a first nozzle 111 and a second nozzle 112 that communicate with the lumen and are opposite to each other. The extension direction of the tube body 11 is divided into a first lumen 113 near the first nozzle 111 and a second lumen 114 near the second nozzle 112 . The axial direction of the first lumen 113 and the axis of the second lumen 114 There is an angle between them.

By adopting the above technical solution, the air guide 10 of the present invention makes an included angle between the axial direction of the first lumen 113 and the axial direction of the second lumen 114 . The exhausted gas is stably introduced into the ventilation assembly, so that when the gas enters the ventilation assembly from the fan, there will be no turbulence, eddy current, etc., which can effectively improve the stability of the airflow in the ventilation assembly, thereby ensuring the stability and reliability of flow monitoring. In addition, the flow guide 10 of the present invention also has the advantages of compact and simple structure, low manufacturing cost and good flow guide performance.

In the above, it should be noted that the portion of the tubular body 11 for defining the first lumen 113 and the portion for defining the second lumen 114 are both straight tubular (see FIG. 1 ). The tube body 11 may be integrally formed, or may be formed by connecting the part for defining the first lumen 113 and the part for defining the second lumen 114 . The first lumen 113 and the second lumen 114 can be any suitable shape, such as a prismatic lumen, a cylindrical lumen, etc. Preferably, the first lumen 113 and the second lumen 114 are both cylindrical lumens. In addition, the reason why there is an included angle between the axial direction of the first lumen 113 and the axial direction of the second lumen 114 is to change the flow direction of the medium entering the lumen from the first nozzle 111 . The included angle between the axial direction of the first lumen 113 and the axial direction of the second lumen 114 may be determined according to actual needs. For example, when the air guide 10 is applied to the ventilation device 20 to be described below, the included angle is determined by the included angle between the axial direction of the air outlet channel 211 of the fan 21 and the axial direction of the ventilation cavity 221 of the ventilation assembly 22 .

In the present invention, in order to control the flow rate of the medium flowing through the lumen, as shown in FIG. 1 and FIG. 2 , the pipe body 11 may include an inner pipe body 115 and an outer pipe body 116 that are coaxially sleeved. The inner pipe body 115 There is a first radial separation from the outer tubular body 116 . When the lumen is a cylindrical lumen, the cross-sections of the inner tube body 115 and the outer tube body 116 are circular.

In addition, in order to facilitate the installation and use of the air guide 10 in other structures (eg, the ventilation device 20 to be described below), the air guide 10 may further include a mounting seat 12 , which is installed outside the pipe body 11 . It should be noted that the mounting seat 12 may be any component capable of mounting the pipe body 11 to other structures.

Wherein, according to an embodiment of the present invention, as shown in FIG. 1 and FIG. 2 , the mounting seat 12 includes a circular ring 121 that is coaxially sleeved outside the outer pipe body 116 . In this case, the annular ring 121 can be placed in close contact with the outer surface of the outer pipe body 116, or a second radial interval can be formed between the annular ring 121 and the outer pipe body 116, and the annular rings 121 can be connected in any way The outer tube body 116 can be fixedly connected, for example, through the connecting ribs 123 between the ring 121 and the outer tube body 116 shown in FIG. 2 .

In the above, when there is a second radial interval between the ring 121 and the outer pipe body 116, in order to ensure the uniformity of the medium pressure flowing through the flow guide 10, the first radial interval can be , the second radial interval and the inner diameter of the inner tube body 115 are set as: in the cross-section of the flow guide 10 passing through the ring 121, the area of the interval area between the inner tube body 115 and the outer tube body 116, The area of the spaced region between the annular ring 121 and the outer tube body 116 and the area of the inner region of the inner tube body 115 are the same or similar. In the case where the installation space of the air guide 10 is limited, the area of the interval area between the inner tube body 115 and the outer tube body 116 and the area of the interval area between the annular ring 121 and the outer tube body 116 can be equal to or similar to , the area of the inner region of the inner tube body 115 can be appropriately adjusted according to the actual situation.

In the present invention, when the air guide 10 is installed on other structures through the annular ring 121, in order to prevent the annular ring 121 from rotating relative to other structures (for example, the first installation portion 223 in the ventilation device 20 to be described below), the A positioning member 122 is provided on the ring 121 to position the ring 121 on other structures.

A second aspect of the present invention provides a ventilation device. As shown in FIGS. 1 to 7 , the ventilation device 20 includes a fan 21 , a ventilation assembly 22 and a flow guide 10 . The air outlet 212, the ventilation assembly 22 includes a ventilation cavity 221 and an air inlet port 222 communicating with the ventilation cavity 221, the ventilation assembly 22 is connected to the fan 21 and makes the air inlet port 222 communicate with the air outlet 212, and the air guide 10 is arranged on the air inlet. In the communication channel between the port 222 and the air outlet 212 , the first nozzle 111 of the air guide 10 extends into the air outlet channel 211 so that the first lumen 113 is coaxial with the air outlet channel 211 , and the second nozzle 112 extends into the ventilation cavity 221 inside such that the second lumen 114 is coaxial with the ventilation lumen 221 .

Through the above technical solution, during use, the gas flowing out from the air outlet 212 of the fan 21 can enter the first lumen 113 through the first nozzle 111 of the air guide 10 and flow along the axial direction of the first lumen 113, Then, it enters the second lumen 114 and flows into the ventilation cavity 221 stably from the second nozzle 112 in the same axial direction as the ventilation cavity 221 after being turned by the second cavity 114 (see arrows in FIG. 7 ). In this way, the gas flowing out of the air outlet 212 of the fan 21 will not generate turbulent flow, eddy current, etc. in the ventilation cavity 221 due to the difference in the axial direction between the ventilation cavity 221 and the air outlet channel 211 , resulting in unstable airflow, thereby affecting the ventilation cavity 221 Collection and monitoring of internal traffic.

In the present invention, in order to ensure the stability of the air guide 10 in the communication channel, the air guide 10 can be further installed on the fan 21 and/or the ventilation assembly 22 . Wherein, according to an embodiment of the present invention, a first mounting portion 223 for mounting the flow guide 10 may be provided on the inner wall of the ventilation assembly 22 for defining the ventilation cavity 221 . Specifically, the first mounting portion 223 is used for mounting with the mounting seat 12 of the deflector 10 , and the structure of the first mounting portion 223 is adapted to the structure of the mounting seat 12 and varies according to the structure of the mounting seat 12 . For example, in the embodiment shown in FIG. 5 , when the mounting base 12 includes the circular ring 121 , the first mounting portion 223 may be an annular groove for the circular ring 121 to be embedded. Further, in order to prevent the circular ring 121 from rotating relative to the first mounting portion 223, the first mounting portion 223 may further be provided with a structure for cooperating with the positioning member 122 provided on the circular ring 121, for example, the positioning member 122 is provided with a structure for In the case of the protrusions on the outer surface of the annular ring 121 , the first mounting portion 223 may be provided with positioning grooves for embedding the protrusions.

In the present invention, in order to facilitate the connection between the fan 21 and the ventilation assembly 22 , the ventilation device 20 may further include a connecting piece 23 , and the air inlet port 222 of the ventilation assembly 22 is connected to the air outlet 212 of the fan 21 through the connecting piece 23 .

Specifically, according to an embodiment of the connector 23 in the present invention, as shown in FIG. 5 and FIG. 7 , the connector 23 includes a cavity with openings at both ends and a peripheral wall 231 for defining the cavity. 222 and the air outlet 212 are respectively inserted into the cavity through the two openings and communicated through the cavity.

It should be noted that the axial direction of the intake port 222 is consistent with the axial direction of the ventilation cavity 221 , and the axial direction of the air outlet 212 is consistent with the axial direction of the air outlet channel 211 . In this case, the axial directions of the two openings are different, and the air inlet port 222 and the air outlet port 212 are respectively inserted into the cavity along different axial directions (see FIGS. 5 and 7 ).

Further, in order to ensure the firmness of the installation of the air inlet port 222 and the air outlet 212 in the cavity, the peripheral wall 231 may be provided with a second installation portion 232 for installation of the air inlet port 222 and a third installation portion for the air outlet 212 to be installed. Mounting part 233 . The second mounting portion 232 and the third mounting portion 233 may be any suitable structure. Of course, the ventilation assembly 22 and the fan 21 may be provided with structures adapted to the second mounting portion 232 and the third mounting portion 233, respectively. For example, as shown in FIGS. 4 and 7 , the ventilation assembly 22 may include a first annular flange 224 disposed around the air inlet port 222, and the second mounting portion 232 may be an annular groove for the first annular flange 224 to be embedded; 21 may include a second annular flange 213 disposed around the air outlet 212 , and the third mounting portion 233 may be an annular groove for the second annular flange 213 to be embedded. The ventilation assembly 22, the fan 21 and the connecting piece 23 can be detached by adopting the above-mentioned connecting structure of the convex edge and the groove, so as to facilitate the assembly and maintenance of the ventilation device 20. . Of course, the connection structure between the ventilation assembly 22 , the fan 21 and the connecting member 23 is not limited to the above-mentioned connection structure.

In addition, as shown in FIGS. 3-7 , the ventilation assembly 22 further includes an air outlet port 225 communicating with the ventilation cavity 221 .

A third aspect of the present invention provides a ventilation therapy device, the ventilation therapy device includes a patient interface device, a ventilation pipeline and a ventilation device 20, one end of the ventilation pipeline is connected to the patient interface device, and the other end of the ventilation pipeline is connected to the ventilation device 20 of the vent assembly 22 .

Wherein, the patient interface device may be a breathing mask, a nasal oxygen tube, a nasal mask or a nasal plug. The ventilation line is connected to the air outlet port 225 of the ventilation assembly 22, and is used for passing the gas discharged from the fan 21 to the patient interface device for inhalation by the patient.

Wherein, the ventilation treatment equipment may be a ventilator, an oxygen therapy apparatus, and the like.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above-mentioned embodiments. Within the scope of the technical concept of the present invention, many technical solutions of the present invention can be carried out. These simple modifications all belong to the protection scope of the present invention.

In addition, it should be noted that each specific technical feature described in the above-mentioned specific implementation manner may be combined in any suitable manner under the circumstance that there is no contradiction. In order to avoid unnecessary repetitions, various possible combinations are not described in the present invention.

In addition, the various embodiments of the present invention can also be arbitrarily combined, as long as they do not violate the idea of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims (10)

1. The flow guide part is characterized by comprising a pipe body (11) defining a pipe cavity, and a first pipe orifice (111) and a second pipe orifice (112) which are communicated with the pipe cavity and are oppositely arranged, wherein the pipe cavity is divided into a first pipe cavity (113) close to the first pipe orifice (111) and a second pipe cavity (114) close to the second pipe orifice (112) along the extending direction of the pipe body (11), and an included angle is formed between the axial direction of the first pipe cavity (113) and the axial direction of the second pipe cavity (114).

2. Flow guide according to claim 1, characterized in that the first (113) and second (114) lumens are both cylindrical lumens.

3. Flow guide according to claim 1,

the pipe body (11) comprises an inner pipe body (115) and an outer pipe body (116) which are coaxially sleeved, and a first radial interval is formed between the inner pipe body (115) and the outer pipe body (116); and/or

The flow guide piece (10) comprises a mounting seat (12), and the mounting seat (12) is mounted outside the pipe body (11).

4. Flow guide according to claim 3, characterized in that the inner (115) and outer (116) tubes are circular in cross-section; and/or

The mounting seat (12) comprises a circular ring (121) coaxially sleeved outside the outer pipe body (116), and a second radial interval is formed between the circular ring (121) and the outer pipe body (116).

5. Deflector according to claim 4, characterized in that the mounting seat (12) comprises a positioning element (122) arranged on the circular ring (121); and/or

The first radial spacing, the second radial spacing, and the inner diameter of the inner tube (115) are arranged to be: in a cross section of the flow guide (10) through the ring (121), the area of the separation region between the inner tube (115) and the outer tube (116), the area of the separation region between the ring (121) and the outer tube (116), and the area of the inner region of the inner tube (115) are equal.

6. An aerator, characterized in that said aerator (20) comprises a blower (21), an aeration assembly (22) and a deflector (10) according to any one of claims 1-5, said blower (21) comprising an outlet channel (211) and an outlet port (212) communicating with said outlet channel (211), said aeration assembly (22) comprising an aeration chamber (221) and an inlet port (222) communicating with said aeration chamber (221), said aeration assembly (22) being connected to said blower (21) and having said inlet port (222) communicating with said outlet port (212), said deflector (10) being arranged in the communication channel of said inlet port (222) with said outlet port (212), said first nozzle (111) of said deflector (10) projecting into said outlet channel (211) so that said first lumen (113) is coaxial with said outlet channel (211), the second orifice (112) extends into the venting lumen (221) such that the second lumen (114) is coaxial with the venting lumen (221).

7. The venting device according to claim 6, wherein a first mounting portion (223) for mounting the baffle (10) is provided on an inner wall of the venting assembly (22) defining the venting chamber (221).

8. The aerator according to claim 6 or 7, characterized in that the aerator (20) comprises a connector (23), the air inlet port (222) of the aerator assembly (22) being connected to the air outlet (212) of the fan (21) by means of the connector (23).

9. The aeration device according to claim 8, wherein the connecting member (23) includes a cavity opened at both ends and a peripheral wall (231) for defining the cavity, and the air inlet port (222) and the air outlet port (212) are respectively inserted into and communicate through the cavity through the two openings.

10. A ventilation therapy device, characterized in that it comprises a patient interface, a ventilation line having one end connected to the patient interface and the other end connected to the ventilation assembly (22), and a ventilation device (20) according to any one of claims 6-9.

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