WO2020001153A1

WO2020001153A1 - Blower device and breathing apparatus using the same

Info

Publication number: WO2020001153A1
Application number: PCT/CN2019/084781
Authority: WO
Inventors: Junming HUANG; Chonghui FAN; Yonghui Chen
Original assignee: Resvent Medical Technology Co., Ltd.
Priority date: 2018-06-29
Filing date: 2019-04-28
Publication date: 2020-01-02
Also published as: CN108591124A; CN108591124B

Abstract

A blower device and a breathing apparatus using the same. The blower device, comprising: a housing (1), a blower body (2) and a bracket (3); the housing (1) comprising an upper cover (11), a middle frame (12) and a lower cover (13); the upper cover (11), the middle frame (12) and the lower cover (13) form a closed cavity (123); the upper cover (11) and the middle frame (12) form a first air passage (121); the housing (1) is provided with a first inlet (1211), a second inlet (1212) and an outlet (122); the blower body (2) is positioned in the cavity (123) through the bracket (3), the blower body (2) comprises a blower inlet (21) and a blower outlet (22); the bracket (3) and the cavity (123) form a second air passage (31); by the first air passage (121) and the second air passage (31), the air flow entering the blower device can be combed effectively and flows more smoothly, and the propagation path of the noise generated by the blower device during use is increased, so as to reduce the noise effectively.

Description

blower device and breathing apparatus using the same

Cross-reference to related applications

The present application claims the priority of the Chinese Patent Application No. 201810699266.8, filed on Jun. 29, 2018, the entire disclosure of which is incorporated herein by reference.

Technical field

The present application relates to the field of medical devices, and in particular to a blower device and a breathing apparatus using the same.

Background art

A breathing apparatus is a apparatus that can replace, control or change a patient's normal physiological breathing. The breathing apparatus is often used to increase the patient's lung ventilation, so as to improve the patient's respiratory function, reduce respiratory power consumption, and save the patient's heart reserve.

A blower device is an important component of the breathing apparatus which is used to pressurize breathing gas and deliver the breathing gas to the patient. The existing blower device has a problem of high noise and poor airflow of the air passage.

Summary

In order to solve the technical problems existing in the prior art, the present application provides a blower device and a breathing apparatus using the same. The aim is to improve the smoothness of the airflow and reduce the noise generated by the blower device during use.

A blower device, comprising: a housing, a blower body and a bracket;

the housing comprising an upper cover, a middle frame and a lower cover; the upper cover, the middle frame and the lower cover form a closed cavity; the upper cover and the middle frame form a first air passage; the housing is provided with a first inlet, a second inlet and an outlet; the first inlet is arranged on one end of the first air passage, and the second inlet is arranged on the other end of the first air passage;

the blower body is positioned in the cavity through the bracket, the blower body comprises a blower inlet and a blower outlet, and the blower outlet is communicated with the outlet; the bracket and the cavity form a second air passage, the blower inlet is communicated with the second air passage, and the second inlet is communicated with the second air passage.

In one embodiment, the housing has a circular or elliptical cross section.

In one embodiment, the second air passage is an annular air passage.

In one embodiment, the first air passage is positioned at the periphery of the cavity.

In one embodiment, the first air passage is an annular air passage or a semi-annular air passage.

In one embodiment, the first air passage is provided with a muffling member.

In one embodiment, the muffling member is a muffling sponge or a dissipative muffler.

In one embodiment, the first air passage is provided with split air tubes.

In one embodiment, the second air passage is provided with a muffling sponge.

A breathing apparatus comprising any of the above blower device.

The present application provides a blower device and a breathing apparatus using the same, the blower device is provided with a first air passage and a second air passage, by the first air passage and the second air passage, the air flow entering the blower device can be combed effectively and flows more smoothly, and the propagation path of the noise generated by the blower device during use is increased, so as to reduce the noise effectively.

Brief description of the drawings

These and other features, aspects, and advantages of the present application are described with reference to the drawings of certain embodiments, which are intended to schematically illustrate certain embodiments and not to limit the application.

Figure 1 is an exploded view of an example blower device;

Figure 2 are stereoscopic views of two different perspectives of an example blower device;

Figure3 is a schematic view showing the air passage structure of an example blower device;

description of the drawings mark:

1housing 1, upper cover 11, middle frame12, lower cover 13, the first air passage 121, outlet 122, cavity 123, the first inlet1211, the second inlet 1212, protrusion 111, seal ring 112, seal ring 131; blower body 2, blower inlet 21, blower outlet;

bracket 3, the second air passage 31, fixed hole 32, ring gasket 33;

muffling member 4;

split air tubes 5;

6hose 6.

Detailed description of specific embodiments

The embodiments of the present application are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar marks are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are exemplary and intended to explain this application, and cannot be understood as a limitation on this application. A blower device provided by the present application is described in detail below with reference to the drawings..

As shown for example in Fig. 1, Fig. 2 and Fig. 3, a blower device, in accordance with the present applicaion, comprises: a housing 1, a blower body 2 and a bracket 3; the housing comprises an upper cover 11, a middle frame 12 and a lower cover 13; the upper cover 11, the middle frame 12 and the lower cover 13 form a closed cavity 123; the upper cover 11 and the middle frame form a first air passage 121; the housing 1 is provided with a first inlet 1211, a second inlet 1212 and a outlet 122; the first inlet 1211 is arranged on one end of the first air passage 121, and the second inlet 1212 is arranged on the other end of the first air passage 121; the blower body 2 is positioned in the cavity 123 through the bracket 3; the blower body 2 comprises a blower inlet 21 and a blower outlet 22, the blower outlet 22 is communicated with the outlet 122; the bracket 3 and the cavity 123 form a second air passage, the blower inlet 21 is communicated with the second air passage, the second inlet 1212 is communicated with the second air passage 31.

Detailedly, the upper cover 11 and the lower cover 13 are respectively detachably fixed to the middle frame 12 by screws. Optionally, in order to ensure the sealing property inside the housing 1, the seal ring 112 is positioned on the joint between the upper cover 11 and the middle frame 12, the sealing ring 131 is positioned on the joint between the lower cover 13 and the middle frame 12; the seal ring 112 and the seal ring 131 may be made of an elastic material such as rubber or silica gel.

The upper cover 11, the middle frame 12 and the lower cover 13 form the closed cavity123; detailedlly, the middle frame 12 has a ring structure, the inner ring of the middle frame 12, the upper cover 11 and the lower cover 13 form the closed cavity 123; the upper cover 11 and the middle frame 12 form the first air passage 121, detailedly, the outer ring of the middle frame 12 and the upper cover 11 form the first air passage 121, the first air passage 121 is arranged at the periphery of the cavity 123. The housing 1 is provided with the first inlet 1211, the second inlet 1212 and the outlet 122; the first inlet 1211 is arranged on the one end of the first air passage 121, the second inlet 1212 is arranged on the other end of the first air passage 121; the first inlet 1211 is communicated with the atmosphere. The blower body 2 is positioned in the cavity 123 by the bracket 3, detailedly, the bracket 3 has at least one fixed hole 32 which extend outward. The inner surface of the upper cover 11 has at least one protrusion 111; The number of the fixed holes 32 is the same as that of the protrusions 111. In this embodiment, the number of the fixed holes 32 is three, and the number of the protrusions 111 is also three. The three fixed holes 32 are evenly distributed along the bracket 3, and the protrusions 111 are distributed along the inner surface of the upper cover 11 corresponding to the fixed holes 32. The blower body 2 is placed in the bracket 3, and the bracket 3 is fixed in the cavity 123 by the cooperation of the fixed holes 32 and the protrusions 111. Further, the ring gasket 33 is arranged around the fixed hole 32. The ring gaskets 33 can be made of an elastic material such as rubber or silica gel. The fixed holes 32 are connected with the protrusions 11 by the ring gaskets 33, which avoids the contact of the bracket 3 and the blower body 2 directly with the upper cover 11, so as to avoid a vibration noise caused by the blower body during use. According to the blower device of the present application, the blower body 2 is suspended and fixed in the housing 1 by the bracket 3, which reduces the direct contact between the blower body 2 and the housing 1, so as to reduce the noise caused by the blower body during use.

The blower body 2 is provided with the blower inlet 21 and the blower outlet 22; the blower outlet 22 is communicated with the outlet 122, further, the blower outlet 22 is communicated with the outlet 122 by the hose 6 which is made of an elastic material such as silica gel, so as to ensure the air tightness of the air passage between the blower outlet 22 and the outlet 122. The blower body 2 may be any suitable type of blowers such as a centrifugal blower, a turbo blower, an axial blower, and the like.

The bracket 3 and the cavity 123 form the second air passage 31; the blower inlet 21 is communicated with the second air passage 31; the second inlet 1212 is communicated with the second air passage 31.

As shown for example in Fig. 3, the air enters the first air passage 121 through the first inlet 1211, then enters the second air passage 31 through the second inlet 1212 from the first air passage 121, then enters the blower body 2 through the blower inlet 21 from the second air passage 31, after being boosted and pressurized by the impeller of the blower body 2, the air flows out of the blower body 2 through the blower outlet 22 and reaches the outside via the outlet 122 for use by the patient. By providing the first air passage 121 and the second air passage 31 in the blower device, the flow path of the air is increased, and the air flows more smoothly, the path of the noise flowing out along the opposite direction of the air flowing is increased, so as to reduce the noise; at the same time, by providing the second air passage in the blower device, the heat dissipation from the blower body is increased.

In some embodiments, the housing 1 has a circular or elliptical cross section. When the housing 1 has a circular or elliptical cross section, the second air passage 31 is an annular air passage, and the first air passage 121 is an annular air passage or a semi-annular air passage. When surrounded the cavity 123, the first air passage 121 is an annular air passage; and when partially surrounded the cavity 123, the first air passage 121 is a semi-annular air passage. According to the circular or elliptical cross section of the blower device provided in present application, the design appearance of the breathing apparatus is matched by the appearance of the blower device, and the air in the air passage of the blower device flows more smoothly, the air resistance is reduced, the noise of the blower device is reduced.

In some embodiments, as shown in Fig. 1, the first air passage 121 is provided with the muffling member 4 which is made of a sound absorbing material. Further, the muffling member 4 may be a muffling sponge or a dissipative muffler. When the noise generated by the blower device during use enters the first air passage 121 from the second air passage 31, the noise is absorbed by the muffling member 4 and reduced.

In some embodiments, as shown in Fig. 1, the second air passage 31 is provided with the muffling member 4 which may be made of a sound absorbing material. Further, the muffling member 4 may be a muffling sponge or a dissipative muffler. The noise generated by the blower device during use is absorbed by the muffling member 4 in the second air passage and reduced.

In some embodiments, as shown in Fig. 1, the first air passage 121 is provided with the split air tubes 5 which may be made of a soft materail such as rubber or silica gel. One or more split air tubes 5 may be provided in the first air passage 31, and the number of the split air tubes 5 is not limited and specifically determined according to the width of the first air passage 121. The air flow in the first air passage is further combed by the split air tubes 5 and flows more smoothly, which avoids generating a turbulence or a eddy current; at the same time, the noise generated by the blower device during use is reflected and/or refracted by the inner wall of a plurality of the split air tubes 5, when flowing out through a plurality of the split air tubes 5 along the direction opposite the air flow, and reduced effectively.

In some embodiments, the first air passage 121 is provided with the muffling member 4 and the split air tubes 5 which may be one or more; the muffling member 4 may be made of a sound absorbing material, further, the muffling member 4 may be a muffling sponge or a dissipative muffler; the split air tubes 5 may be made of a soft materail such as rubber or silica gel. The arrangement of the muffling member 4 and the split air tubes 5 in the first air passage 121 can be set according to the needs. In an exemplary embodiment, the plurality of the split air tube 5 are arranged along the direction in which the air flows in the first air passage 121, and the plurality of the muffling members 4 are respectively arranged on the top and bottom surfaces of the first air passage 121.

By arranging the muffling member 4 and the split air tubes 5 in the first air passage 121, the noise generated by the blower device during use enters the first air passage 121 from the second air passage 31, the noise is absorbed by the muffling member 4 and reflected and/or refracted by the inner wall of a plurality of the split air tubes 5, and reduced effectively.

In some embodiments, the housing 1 futher comprises an annular cavity which is positioned between the cavity 123 and the first air passage 121; further, the annular cavity is provided with a muffling member which is made of a sound absorbing material, and the muffling member may be a muffling sponge. the noise generated by the blower device during use is absorbed by the muffling member in the annular cavity, when propagating outward through the wall of the housing 1, and reduced to some extent.

The present application provides a blower device which is provided with the first air passage and the second air passage. By the first air passage and the second air passage, the air flow entering the blower device can be combed effectively and flows more smoothly, and the propagation path of the noise generated by the blower device during use is increased, so as to reduce the noise effectively.

A breathing apparatus provided in the present application comprises the blower device provided in the present application.

According to the breathing apparatus comprises the blower device provided in the present application, by the first air passage and the second air passage, the air flow entering the blower device can be combed effectively and flows more smoothly, and the propagation path of the noise generated by the blower device during use is increased, so as to reduce the noise effectively. In the description of the present specification, the reference terms "one embodiment" , "some embodiments" , "example" , "specific example" , or "some examples" and the like means that, features, structures, materials or characteristics are combined and included in at least one embodiment or example of the application. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. And the features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples. Further, the various embodiments or examples described in this specification can be joined and combined by those skilled in the art. Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the present application. The above-described embodiments can be varied, modified, substituted and transformed by those skilled in the art within the scope of the present application.

Claims

A blower device, comprising: a housing, a blower body and a bracket;

the housing comprising an upper cover, a middle frame and a lower cover, the upper cover, the middle frame and the lower cover form a closed cavity; the upper cover and the middle frame form a first air passage; the housing is provided with a first inlet, a second inlet and an outlet; the first inlet is arranged on one end of the first air passage, and the second inlet is arranged on the other end of the first air passage;

the blower body is positioned in the cavity through the bracket, the blower body comprises a blower inlet and a blower outlet, and the blower outlet is communicated with the outlet; the bracket and the cavity form a second air passage, the blower inlet is communicated with the second air passage, and the second inlet is communicated with the second air passage.
The blower device according to claim 1, wherein the housing has a circular or elliptical cross section.
The blower device according to claim 2, wherein the second air passage is an annular air passage.
The blower device according to claim 2, wherein the first air passage is positioned at the periphery of the cavity.
The blower device according to claim 4, wherein the first air passage is an annular air passage or a semi-annular air passage.
The blower device according to claim 1, wherein the first air passage is provided with a muffling member.
The blower device according to claim 6, wherein the muffling member is a muffling sponge or a dissipative muffler.
The blower device according to claim 1, wherein the first air passage is provided with split air tubes.
The blower device according to claim 9, wherein the second air passage is provided with a muffling sponge.
A breathing apparatus, comprising the blower device according to any one of claims 1 to 9.