CN111249585B

CN111249585B - Breathing machine and rectification component thereof

Info

Publication number: CN111249585B
Application number: CN201811451050.6A
Authority: CN
Inventors: 余世密; 李永贵; 张向阳
Original assignee: Shenzhen Daya Medical Technology Co ltd
Current assignee: Shenzhen Daya Medical Technology Co ltd
Priority date: 2018-11-30
Filing date: 2018-11-30
Publication date: 2023-03-31
Anticipated expiration: 2038-11-30
Also published as: CN111249585A

Abstract

The invention discloses a rectifying assembly which comprises a rectifying cover and a flow guide pipe, wherein the rectifying cover comprises a first side wall and a second side wall which are oppositely arranged at intervals, a mounting hole is formed in the first side wall, the flow guide pipe penetrates through the mounting hole and is detachably connected with the rectifying cover, the first end of the flow guide pipe is positioned in the rectifying cover and is separated from the second side wall, an air outlet hole is further formed in the rectifying cover, and the rectifying cover is used for rectifying air entering from an opening of the second end of the flow guide pipe and then discharging the air from the air outlet hole. Through setting the honeycomb duct and the form that the radome fairing was connected to dismantling, can be through changing the honeycomb duct in order to change the rectification effect of rectification subassembly to obtain multiple rectification effect, make the suitability of rectification subassembly stronger.

Description

Breathing machine and rectification component thereof

Technical Field

The invention relates to the technical field of medical instruments, in particular to a breathing machine and a rectification component thereof.

Background

The breathing machine is a special medical mechanical device for assisting people in breathing, and can replace, control or change the normal physiological breathing of people, thereby achieving the effects of increasing the ventilation of the lung, improving the breathing function, reducing the consumption of the breathing function and the like. At present, due to the growing concern about health, ventilators have been widely used in life.

A rectification assembly is generally provided in the ventilator to rectify the flow of air entering the rectification assembly, so as to make the air discharged from the ventilator uniform and stable. Because users or service time are different, the amount of gas that hopes the breathing machine to exhaust is also different, and current rectification subassembly structure is fixed, only can discharge the air current that has fixed rectification effect, and the suitability is relatively poor.

Disclosure of Invention

The invention provides a breathing machine and a rectification component thereof, which aim to solve the technical problem of single rectification effect of the rectification component in the prior art.

In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a fairing assembly, fairing assembly includes fairing and honeycomb duct, the fairing includes first side wall and the second lateral wall that relative interval set up, the mounting hole has been seted up on the first side wall, the honeycomb duct is worn to locate in the mounting hole, and with the connection can be dismantled to the fairing, the first end of honeycomb duct is located in the fairing, and with the second lateral wall interval, the venthole has still been seted up on the fairing, the fairing is used for right the gas that the opening of the second end of honeycomb duct got into carries out the rectification after follow the venthole is discharged.

Optionally, a clamping hook is convexly arranged on the outer peripheral surface of the flow guide pipe, a buckle is formed on the first side wall, and the clamping hook is matched with the buckle so as to fix the flow guide pipe on the fairing.

Optionally, the clamping hooks comprise a plurality of clamping hooks, and the plurality of clamping hooks are uniformly arranged on the same cross section of the flow guide pipe; a plurality of avoidance grooves are formed in the positions, corresponding to the clamping hooks, of the first side wall, the adjacent avoidance grooves form the buckles, and each clamping hook corresponds to the avoidance groove, is inserted into the fairing and is matched with each buckle after rotating.

Optionally, each of the buckles is located on the inner surface of the fairing and is recessed inwards to form a positioning groove, and the hook is accommodated in the positioning groove after rotating.

Optionally, in the rotation direction of the hook, the height of the buckle along the axial direction of the mounting hole is gradually increased.

Optionally, the honeycomb duct is in threaded fit connection with the mounting hole.

Optionally, the air outlet is arranged on the top wall of the fairing; the distance between the first end of the draft tube and the second side wall is smaller than the minimum distance between the hole wall surrounding the air outlet hole and the second side wall.

Optionally, the draft tube comprises a first section located inside the fairing and a second section located outside the fairing, the second section having a surface roughness of the outer peripheral surface greater than the surface roughness of the outer peripheral surface of the first section.

Optionally, the outer diameter of the first section is smaller than the outer diameter of the second section, so that a step is formed at the joint of the first section and the second section, the rectifying assembly further comprises a sealing gasket, the sealing gasket is sleeved on the flow guide pipe and clamped between the step and the first side wall.

In order to solve the technical problem, the invention adopts another technical scheme that: there is provided a ventilator comprising a fan assembly and a rectification assembly as described above, the fan assembly being connected to the rectification assembly, the fan assembly being configured to generate an airflow, the rectification assembly being configured to rectify the airflow.

The invention has the beneficial effects that: different from the situation of the prior art, the flow guide pipe and the rectifying assembly of the breathing machine are detachably connected, and the rectifying effect of the rectifying assembly can be changed by replacing the flow guide pipe, so that various rectifying effects can be obtained, and the rectifying assembly is higher in applicability.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic perspective view of a rectifying assembly according to an embodiment of the present invention;

FIG. 2 is an exploded view of the rectifier assembly of FIG. 1;

FIG. 3 is an exploded view of the fairing assembly of FIG. 1;

FIG. 4 is a cross-sectional structural schematic of the fairing assembly of FIG. 1;

FIG. 5 is an enlarged, fragmentary, schematic structural view of the fairing of FIG. 3;

FIG. 6 is a cross-sectional structural schematic of a fairing assembly in another embodiment of the invention;

fig. 7 is a schematic structural diagram of a ventilator according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be noted that the following examples are only illustrative of the present invention, and do not limit the scope of the present invention. Similarly, the following examples are only some but not all examples of the present invention, and all other examples obtained by those skilled in the art without any inventive work are within the scope of the present invention.

The terms "first" and "second" in the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In the embodiment of the present invention, all directional indicators (such as up, down, left, right, front, rear \8230;) are used only to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1 to 3, fig. 1 is a schematic perspective view illustrating a rectifying device 100 according to an embodiment of the present invention, fig. 2 is an exploded view illustrating the rectifying device in fig. 1, and fig. 3 is an exploded view illustrating the rectifying device in fig. 1.

The fairing assembly 100 can include a fairing 10 and a draft tube 20, wherein the fairing 10 includes a first sidewall 12 and a second sidewall 16 spaced apart from one another. The first side wall 12 is provided with a mounting hole 14, and the draft tube 20 is inserted into the mounting hole 14 and detachably connected to the cowling 10. The first end 21 of the draft tube 20 is located in the fairing 10 and is spaced from the second side wall 16, the fairing 10 is further provided with an air outlet 18, and the fairing 10 is used for rectifying the gas entering from the opening of the second end 22 of the draft tube 20 and then discharging the gas from the air outlet 18.

In this embodiment, the installation hole 14 is formed in the fairing 10, and the guide pipe 20 is detachably connected to the fairing 10 through the installation hole 14, so that the rectification effect of the rectification component 100 can be changed by replacing the guide pipe 20, so as to obtain various rectification effects, and the applicability of the rectification component 100 is stronger.

Specifically, as shown in fig. 1, the airflow enters the fairing 10 through the opening of the second end 22 of the draft tube 20, the fairing 10 rectifies the airflow, and the rectified airflow is discharged from the air outlet 18.

Wherein, in the present embodiment, the air outlet hole 18 is opened on the top wall 15 of the fairing 10 to facilitate air outlet. Of course, in other embodiments, the outlet hole 18 may be disposed on one of the two sidewalls of the fairing 10 between the first sidewall 12 and the second sidewall 16 and adjacent to the top wall 15, and the invention is not limited in particular.

Alternatively, the fairing 10 may be a unitary structure, i.e., the first and

second sidewalls

12, 16 of the fairing 10 are unitary with the top wall 15 of the fairing 10 to simplify the structure of the fairing 10 and reduce the number of components to reduce installation complexity. In this embodiment, as shown in fig. 3, the top wall 15 is detachably connected to the first side wall 12 and the second side wall 16.

As shown in fig. 2, the first sidewall 12 is disposed opposite the second sidewall 16. The first end 21 of the draft tube 20 is spaced from the second sidewall 16 to facilitate air intake. In this embodiment, the distance between the first end 21 of the draft tube 20 and the second side wall 16 is smaller than the minimum distance between the wall of the hole enclosing the outlet hole 18 and the second side wall 16.

Specifically, as shown in fig. 4, the distance between the first end 21 of the flow guide tube 20 and the second side wall 16 is D1, the minimum distance between the wall of the hole enclosing the air outlet hole 18 and the second side wall 16 is D2, and the distance between the first end 21 of the flow guide tube 20 and the second side wall 16 is smaller than the minimum distance between the wall of the hole enclosing the air outlet hole 18 and the second side wall 16, i.e., D1< D2. By arranging the first end 21 between the second sidewall 16 and the wall closest to the second sidewall 16, the transmission path of the air flow discharged from the first end 21 of the flow guide tube 20 to the air outlet 18 can be lengthened, thereby improving the rectification effect.

Alternatively, as shown in fig. 3, in the present embodiment, the draft tube 20 has a straight cylindrical shape. By providing a straight cylindrical draft tube 20, the resistance of the gas flow into the fairing 10 is reduced, thereby reducing the noise generated during the gas transfer process.

Furthermore, a hook 23 is convexly arranged on the outer peripheral surface of the draft tube 20, a buckle 13 is formed on the first side wall 12, and the hook 23 is in buckling fit with the buckle 13 to fix the draft tube 20 on the fairing 10.

Specifically, as shown in fig. 3, a plurality of hooks 23 are provided on the outer circumferential surface of the draft tube 20, and the plurality of hooks 23 are provided on the same cross section of the draft tube 20. In an embodiment, the number of the hooks 23 may be two, and the two hooks 23 are disposed at two ends of the diameter direction of the draft tube 20, so that the draft tube 20 and the fairing 10 are uniformly stressed when being connected. In this embodiment, the number of the hooks 23 is four, and the four hooks 23 are uniformly distributed on the same circumference of the flow guide tube 20. Through setting up four evenly distributed's trip 23, the atress is even when not only can making honeycomb duct 20 be connected with radome fairing 10, also can increase honeycomb duct 20 and radome fairing 10 area of contact in order to increase the effort between honeycomb duct 20 and the radome fairing 10 moreover for connect more firmly.

Furthermore, a plurality of avoidance grooves 11 are formed in the first side wall 12 at positions corresponding to the hooks 23, buckles 13 are formed at portions between adjacent avoidance grooves 11, and each hook 23 is inserted into the fairing 10 from the corresponding avoidance groove 11 and is matched with each buckle 13 after rotating.

Specifically, the aperture of the mounting hole 14 is substantially the same as the outer diameter of the flow guide tube 20, the plurality of buckles 13 are convexly arranged on the side wall of the mounting hole 14 to form the avoiding groove 11 between adjacent buckles 13, and the shape of the avoiding groove 11 is matched with the shape of the hook 23. After the hook 23 is aligned with the avoiding groove 11, the first end 21 of the draft tube 20 is inserted into the mounting hole 14, and the hook 23 also passes through the avoiding groove 11 along with the first end 21, and the second end 22 and the first end 21 are respectively located on two opposite sides of the first side wall 12. At this time, the second end 22 is rotated, the hook 23 rotates along with the second end 22, and the projection of the hook 23 on the first side wall 12 coincides with the buckle 13, so as to abut against the buckle 13, thereby realizing the matching connection between the hook 23 and the buckle 13.

Further, as shown in fig. 5, a positioning groove 132 is formed on the surface of the clip 13 inside the fairing 10 and is recessed inwards, and the hook 23 is received in the positioning groove 132 after rotating. Set up constant head tank 132 with location trip 23, can prevent to get into after the honeycomb duct 20 is become flexible and dodge in the groove 11 to deviate from in dodging the groove 11, make to connect more stably.

Alternatively, the height of the catch 13 in the axial direction of the mounting hole 14 gradually increases in the rotational direction of the hook 23, as shown by the arrow in fig. 5. That is, the end of the clip 13 located inside the cowl 10 gradually extends in a direction away from the first sidewall 12 in the rotational direction of the hook 23. Through the height gradual increase that sets up buckle 13, can make the clearance between trip 23 and the radome fairing 10 surface reduce gradually at the in-process that rotates honeycomb duct 20 for the effort of rotating honeycomb duct 20 is more steady.

In this embodiment, as shown in fig. 3 and 5, the cross section of the hook 23 is rectangular, and the positioning groove 132 is adapted to the cross section of the hook 23 and also configured to be rectangular. In another embodiment, the cross-section of the hook 23 may also be semicircular or semi-elliptical to make the contact area between the hook 23 and the first sidewall 12 smaller, thereby reducing rotational friction.

In the above embodiment, the duct 20 and the cowling 10 are connected by the hook 23 and the buckle 13. Of course, the draft tube 20 and the fairing 10 can be detachably connected in other forms. For example, the delivery tube 20 and the mounting bore 14 may also be coupled by a threaded fit.

Specifically, as shown in fig. 6, in one embodiment, an external thread may be formed on the outer circumferential surface of the draft tube 20. The first end 21 of the draft tube 20 is inserted into the fairing 10 and coupled to the threaded fastener 24 located in the fairing 10 to secure the draft tube 20 to the fairing 10 for removable coupling of the draft tube 20 to the fairing 10.

In another embodiment, an external thread may be formed on the outer circumferential surface of the draft tube 20 and an internal thread may be formed on the inner wall of the mounting hole 14. The draft tube 20 and the fairing 10 are connected in a thread fit mode through external threads and internal threads. By providing the threaded connection structures on the flow guide tube 20 and the mounting hole 14, not only the processing complexity of the fairing 10 can be reduced, but also the number of mounting and fixing elements can be reduced, so that the assembly is more convenient.

Further, as shown in fig. 2 and 3, the draft tube 20 includes a first section 25 located inside the cowl 10 and a second section 26 located outside the cowl 10. Wherein the surface roughness of the outer peripheral surface of the first section 25 is smaller than the surface roughness of the outer peripheral surface of the second section 26. Since the force application part is positioned on the second segment 26 in the process of rotating the draft tube 20, the friction force with the second segment 26 can be increased by arranging the second segment 26 with larger surface roughness, thereby avoiding the occurrence of slipping in the process of rotating the draft tube 20.

Optionally, the outer diameter of the first section 25 is smaller than the outer diameter of the second section 26. By increasing the outer diameter of the second section 26, the moment arm of the acting force on the acting second section 26 can be increased, so that the acting force for rotating the draft tube 20 is smaller, and the installation is more labor-saving.

Optionally, the fairing assembly 100 also includes a gasket 30. As shown in fig. 2 and 3, since the outer diameter of the first section 25 is smaller than the outer diameter of the second section 26, a step is formed at the connection portion of the first section 25 and the second section 26, and the gasket 30 is sleeved on the draft tube 20 and is interposed between the step and the first sidewall 12, so that the sealing performance between the draft tube 20 and the first sidewall 12 is better.

In another aspect of the present invention, referring to fig. 7, a ventilator 300 is provided, wherein the ventilator 300 includes a fan assembly 200 and a rectification assembly 100, and the fan assembly 200 is connected to the rectification assembly 100. The fan assembly 200 is used to generate an air flow, and the rectification assembly 100 is used to rectify the air flow to output a stable and uniform air flow.

The structure of the rectifying component 100 in this embodiment is the same as that of the rectifying component 100 in the above embodiment, please refer to the description in the above embodiment, and the description in this embodiment is omitted.

Different from the prior art, in the ventilator 300 and the rectification component 100 thereof provided by the invention, the draft tube 20 and the rectification cover 10 are detachably connected, and the rectification effect of the rectification component 100 can be changed by replacing the draft tube 20, so that various rectification effects can be obtained, and the rectification component 100 and the ventilator 300 thereof have stronger applicability.

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present specification and the attached drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A fairing assembly is characterized by comprising a fairing and a flow guide pipe, wherein the fairing comprises a first side wall and a second side wall which are oppositely arranged at an interval, the first side wall is provided with a mounting hole, the flow guide pipe penetrates through the mounting hole and is detachably connected with the fairing, the first end of the flow guide pipe is positioned in the fairing and is spaced from the second side wall, the fairing is also provided with an air outlet hole, and the fairing is used for rectifying air entering from an opening at the second end of the flow guide pipe and then discharging the air from the air outlet hole;

a clamping hook is convexly arranged on the outer peripheral surface of the flow guide pipe, a buckle is formed on the first side wall, and the clamping hook is matched with the buckle so as to fix the flow guide pipe on the fairing;

the clamping hooks are uniformly arranged on the same cross section of the flow guide pipe; a plurality of avoiding grooves are formed in the first side wall at positions corresponding to the hooks, the buckles are formed in the parts between the adjacent avoiding grooves, and each hook is inserted into the fairing from the corresponding avoiding groove and is matched with each buckle after rotating;

each buckle is positioned on the surface in the fairing and is inwards sunken to form a positioning groove, and the hook is accommodated in the positioning groove after rotating;

and in the rotating direction of the clamping hook, the height of the clamping hook along the axial direction of the mounting hole is gradually increased.

2. The fairing assembly of claim 1, wherein said flow conduit is threadably engaged with said mounting hole.

3. The fairing assembly of claim 1, wherein said exit aperture opens in a top wall of said fairing; the distance between the first end of the draft tube and the second side wall is smaller than the minimum distance between the hole wall surrounding the air outlet hole and the second side wall.

4. The fairing assembly of claim 1, wherein said flow conduit comprises a first section located inside said fairing and a second section located outside said fairing, said second section having a surface roughness of an outer perimeter surface that is greater than a surface roughness of an outer perimeter surface of said first section.

5. The fairing assembly of claim 4, wherein an outer diameter of the first section is smaller than an outer diameter of the second section, such that a step is formed at a junction of the first section and the second section, and further comprising a gasket sleeved on the flow guide tube and sandwiched between the step and the first sidewall.

6. A respirator comprising a fan assembly and a rectification assembly according to any one of claims 1 to 5, the fan assembly being connected to the rectification assembly, the fan assembly being adapted to generate an airflow, and the rectification assembly being adapted to rectify the airflow.