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CN-116036434-B - Exhaust structure and breathing mask

CN116036434BCN 116036434 BCN116036434 BCN 116036434BCN-116036434-B

Abstract

The invention relates to an exhaust structure and a breathing mask, and relates to the technical field of breathing masks. The exhaust structure comprises an exhaust body and exhaust holes arranged on the exhaust body, wherein the exhaust holes comprise inner side holes and outer side holes which are respectively positioned at two sides of the minimum ventilation section, and the inner side holes are communicated with the outer side holes. The exhaust holes are arranged to be the inner hole and the outer hole which are positioned at the two sides of the minimum ventilation section, wherein the inner hole is the inner taper hole, and the outer hole is the outer taper hole, so that when the air flow is exhausted, the air flow passes through the inner taper hole at first, the inner taper hole can enable the air flow to be more concentrated, the air flow can be more smooth, then the air flow flows to the outer taper hole, the air flow is enabled to be more divergent, the flow speed of the air flow is enabled to be rapidly reduced, the consumption of the energy of the air flow is facilitated, and the effect of reducing noise is better.

Inventors

  • WANG YAJIE
  • ZHOU MINGZHAO
  • ZHUANG ZHI

Assignees

  • 天津怡和嘉业医疗科技有限公司

Dates

Publication Date
20260505
Application Date
20221230

Claims (20)

  1. 1. An exhaust structure is characterized by comprising an exhaust body and an exhaust hole arranged on the exhaust body, wherein the exhaust hole has a minimum ventilation cross section; The exhaust hole comprises an inner hole and an outer hole which are respectively positioned at two sides of the minimum ventilation section, the inner hole is communicated with the outer hole, and air flow is exhausted out of the exhaust body along the direction from the inner hole to the outer hole; Wherein the inner side hole is configured as an inner cone hole having a reduced ventilation cross section in the air flow direction, and the outer side hole is configured as an outer cone hole having an increased ventilation cross section in the air flow direction; the outer aperture is configured such that its projection in a plane defined by a first direction and a second direction has a first inclined edge and a second inclined edge extending from the minimum ventilation cross-section, respectively; Wherein the length of the first inclined edge is greater than or less than the length of the second inclined edge, The inner side aperture is configured such that its projection in a plane defined by the first direction and the second direction has a third inclined side extending from the minimum ventilation cross section and a fourth inclined side, the length of the third inclined side being greater than or less than the length of the fourth inclined side, Wherein the first direction is perpendicular to the second direction; The exhaust body comprises an inclined surface connecting portion, the exhaust hole is arranged on the inclined surface connecting portion, and a third included angle gamma is formed between the minimum ventilation section and the inclined surface of the inclined surface connecting portion.
  2. 2. The exhaust structure according to claim 1, wherein the minimum ventilation cross-section has a first angle β with a first direction and the chamfer of the chamfer connection has a second angle α with a second direction.
  3. 3. The exhaust structure according to claim 2, wherein the outer aperture is configured such that its projection in a plane defined by a first direction and a second direction has a first outer edge and a second outer edge, the first sloped edge extending from the minimum ventilation cross section to the first outer edge, the second sloped edge extending from the minimum ventilation cross section to the second outer edge; wherein the first outer edge is disposed opposite the second outer edge.
  4. 4. An exhaust structure according to claim 2, characterized in that β < α, β+γ=90 ° - α.
  5. 5. The exhaust structure as claimed in claim 4, wherein the first included angle β is 0 ° -70 °.
  6. 6. The exhaust structure according to claim 5, wherein the first included angle β is 10 ° -45 °.
  7. 7. The exhaust structure as claimed in claim 4, wherein the second included angle α is 10 ° -90 °.
  8. 8. The exhaust structure according to claim 7, wherein the second included angle α is 35 ° -55 °.
  9. 9. A vent structure according to claim 3, wherein the angle between the first angled edge and the first direction is 0 ° -15 °, and the angle between the first angled edge and the second angled edge is 70 ° -120 °.
  10. 10. The exhaust structure according to claim 9, wherein the inner aperture is configured such that its projection in a plane defined by a first direction and a second direction has a first inner edge and a second inner edge, the third sloped edge extending from the minimum ventilation cross section to the first inner edge, the fourth sloped edge extending from the minimum ventilation cross section to the second inner edge; Wherein the first inner edge is disposed opposite the second inner edge.
  11. 11. The exhaust structure according to claim 10, wherein an angle between the fourth inclined side and the first direction is0 ° -15 °, and an angle between the third inclined side and the fourth inclined side is 45 ° -120 °.
  12. 12. A vent structure according to claim 3, wherein the maximum hole depth of the inner hole is greater than the maximum hole depth of the outer hole.
  13. 13. The structure according to claim 1, wherein the minimum ventilation cross section is circular or elliptical, and/or The ventilation section of the inner hole is round, elliptic, round rectangle, square or diamond, and/or The ventilation section of the outer hole is round, oval, round rectangle, square or diamond.
  14. 14. The exhaust structure according to claim 1, wherein the number of the exhaust holes is plural, and the plural exhaust holes are sequentially provided at equal intervals or unequal intervals in a circumferential direction of the exhaust body.
  15. 15. The vent structure of claim 14, wherein a plurality of the vent holes are distributed in clusters or in arrays.
  16. 16. The exhaust structure according to claim 14, wherein at least two of the exhaust holes are located on a virtual circle centered on a center of the exhaust body.
  17. 17. The venting structure of claim 1, wherein the venting body material is polypropylene, polycarbonate, polyethylene, polystyrene, thermoplastic polymer structural material, or polyvinylchloride.
  18. 18. An exhaust structure is characterized by comprising an exhaust body and an exhaust hole arranged on the exhaust body, wherein the exhaust hole has a minimum ventilation cross section; The exhaust hole comprises an inner hole and an outer hole which are respectively positioned at two sides of the minimum ventilation section, the inner hole is communicated with the outer hole, and air flow is exhausted out of the exhaust body along the direction from the inner hole to the outer hole; The outer aperture is configured such that its projection in a plane defined by a first direction and a second direction has a first inclined side and a second inclined side extending from the minimum ventilation cross section, respectively, the first inclined side and the second inclined side being different in length, wherein the first direction is perpendicular to the second direction; The inner side aperture is configured such that its projection in a plane defined by the first direction and the second direction has a third inclined side and a fourth inclined side extending from the minimum ventilation cross section, respectively, the third inclined side and the fourth inclined side being different in length; The exhaust body comprises an inclined surface connecting portion, the exhaust hole is arranged on the inclined surface connecting portion, and a third included angle gamma is formed between the minimum ventilation section and the inclined surface of the inclined surface connecting portion.
  19. 19. The exhaust structure of claim 18, wherein a length of the third angled edge is greater than or equal to a length of the first angled edge.
  20. 20. The exhaust structure of claim 18, wherein a length of the third angled edge is greater than or equal to a length of the second angled edge.

Description

Exhaust structure and breathing mask Technical Field The invention relates to the technical field of breathing masks, in particular to an exhaust structure and a breathing mask. Background Respiratory masks generally include a frame, a cushion assembly positioned inside the frame, and an elbow positioned outside the frame, the elbow being connected to the frame by a connector. Wherein the vent apertures may be provided on the elbow, frame or connector. For example, chinese patent CN114887181a discloses a noninvasive respiratory mask. The front end of the mask body is provided with an exhaust hole, the exhaust hole is formed into a conical structure, wherein the large-diameter hole end of the exhaust hole is positioned at the inner side of the mask body, and the small-diameter hole end of the exhaust hole is positioned at the outer side of the mask body. Therefore, the structure of the exhaust hole is single, and the exhaust hole with the single conical structure is characterized in that the large diameter hole is inward and the small diameter hole is outward, so that the air flow is more concentrated when the air flow is exhausted to the environment through the exhaust hole, the flow speed of the air flow is increased, and larger noise is generated when the air flow is exhausted. Disclosure of Invention The present invention provides an exhaust structure and a breathing mask, which are used for solving at least one technical problem described above. According to a first aspect of the present invention, there is provided an exhaust structure comprising an exhaust body and an exhaust hole provided on the exhaust body, the exhaust hole having a minimum ventilation cross section, a first direction; The exhaust hole comprises an inner hole and an outer hole which are respectively positioned at two sides of the minimum ventilation section, the inner hole is communicated with the outer hole, and air flow is exhausted out of the exhaust body along the direction from the inner hole to the outer hole; wherein the inner side hole is configured as an inner cone hole having a ventilation cross section decreasing in the air flow direction, and the outer side hole is configured as an outer cone hole having a ventilation cross section increasing in the air flow direction. In one embodiment, the vent body includes a beveled connection, the vent hole is disposed on the beveled connection, the minimum vent cross section has a first angle β with a first direction, and the beveled surface of the beveled connection has a second angle α with a second direction, wherein the first direction is perpendicular to the second direction. In one embodiment, the outer aperture is configured such that its projection in a plane defined by a first direction and a second direction has a first outer edge, a second outer edge, a first sloped edge extending from the minimum ventilation cross section to the first outer edge, and a second sloped edge extending from the minimum ventilation cross section to the second outer edge; wherein the first outer edge is disposed opposite the second outer edge; the length of the first inclined edge is greater than or less than the length of the second inclined edge. In one embodiment, a third included angle gamma is formed between the minimum ventilation section and the inclined plane of the inclined plane connecting part; Wherein, beta < alpha, beta+gamma=90-alpha. In one embodiment, the first included angle β is 0 ° to 70 °. In one embodiment, the first included angle β is 10 ° -45 °. In one embodiment, the second included angle α is 10 ° to 90 °. In one embodiment, the second included angle α is 35 ° to 55 °. In one embodiment, the angle between the first inclined edge and the first direction is 0 ° -15 °, and the angle between the first inclined edge and the 5 second inclined edge is 70 ° -120 °. In one embodiment, the inboard aperture is configured such that its projection in a plane defined by the first and second directions has a first inner edge, a second inner edge, a third sloped edge extending from the minimum ventilation cross-section to the first inner edge, and a fourth sloped edge extending from the minimum ventilation cross-section to the second inner edge; wherein the first inner edge is disposed opposite the second inner edge. 0 In one embodiment, the angle between the fourth inclined edge and the first direction is 0 ° -15 °, the third inclined edge and The included angle between the fourth inclined edges is 45-120 degrees. In one embodiment, the maximum hole depth of the inner hole is greater than the maximum hole depth of the outer hole. In one embodiment, the minimum ventilation cross-section is parallel to the bevel of the bevel connection, Wherein, the beta+alpha=90°. 5 In one embodiment, the second angle α is 10 ° to 70 °. In one embodiment, the second angle α is 45 ° -55 °. In one embodiment, the outer aperture is configured such that its projection in a plane defined by the first an