CN112089943A

CN112089943A - Ventilation moisturizing device, breathing mask assembly and breathing support equipment

Info

Publication number: CN112089943A
Application number: CN202010989126.1A
Authority: CN
Inventors: 马国辉; 刘远翔; 周明钊; 庄志
Original assignee: BMC Medical Co Ltd
Current assignee: BMC Medical Co Ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2020-12-18

Abstract

The invention relates to the field of medical equipment and discloses a ventilation and moisture retention device, a breathing mask assembly and breathing support equipment. In the ventilation and moisture retention device, a shell of the ventilation and moisture retention device comprises a breathing passage, one end of the breathing passage is a breathing mask communication end, and the other end of the breathing passage is a breathing tube communication end; any of a plurality of different sized ventilating and moisturizing units for allowing the passage of breathing gas and capable of slowing the passage of moisture and heat in the exhaled gas can be disposed within the ventilating and moisturizing unit housing section. The ventilation and moisture retention device is small in size, can be flexibly and conveniently carried, can provide moisture-retention and heat-retention breathable gas for a wearer, and improves the comfort of wearing the breathing mask.

Description

Ventilation moisturizing device, breathing mask assembly and breathing support equipment

Technical Field

The invention relates to the technical field of medical equipment, in particular to a ventilation and moisture retention device, a breathing mask assembly and breathing support equipment.

Background

At present, mask respiratory includes breathing machine, breathing tube and respiratory mask, and respiratory mask includes the breathing chamber, and this breathing chamber can hold patient's nose or nose and oral area, then fixes on patient's face through the bandeau to form a sealed breathing chamber, like this, the breathing tube can be with the breathable gas conveying that the breathing machine produced to sealed breathing chamber in, and then carry out respiratory therapy to patient. In addition, in order to facilitate the exhaust of the exhaust gas exhaled by the patient, an exhaust port is usually provided on the breathing mask, so that the exhaled exhaust gas can be exhausted through the exhaust port.

In practice, such respiratory therapy times are often relatively long, for example, patients often wear respiratory masks throughout the day and night. When the air temperature is low and the air is dry, wearing the breathing mask for a long time will reduce the comfort of the wearer. For this purpose, ventilators are typically provided with a heating and humidifying device to provide heated and humidified breathable gas to the wearer.

However, ventilators are typically relatively bulky and not portable.

Disclosure of Invention

The invention aims to provide breathing gas with moisture and heat preservation for a wearer of a breathing mask flexibly and conveniently, and improve the comfort of wearing the breathing mask.

To this end, the present invention provides a ventilating and moisturizing device comprising: the ventilation and moisture retention device comprises a ventilation channel, one end of the ventilation channel is a breathing mask communication end, the other end of the ventilation channel is a breathing tube communication end, the ventilation channel comprises a ventilation and moisture retention unit accommodating section positioned between the breathing mask communication end and the breathing tube communication end, and an exhaust port is arranged on a channel wall of a channel section of the ventilation channel positioned between the ventilation and moisture retention unit accommodating section and the breathing tube communication end; and a plurality of different specifications of ventilation and moisture retention units, wherein the moisture retention degree of at least one ventilation and moisture retention unit is different from the moisture retention degree of one or more other ventilation and moisture retention units, any one ventilation and moisture retention unit can be arranged in the ventilation and moisture retention unit accommodating section, and the ventilation and moisture retention units are used for allowing the breathing gas to pass and slowing down the moisture and heat in the exhaled gas.

In the technical scheme, because the ventilation and moisture retention unit is arranged in the ventilation and moisture retention unit accommodating section of the breathing passage, and the ventilation and moisture retention unit can be used for allowing breathing gas to pass and can slow down the passing of moisture and heat in the exhaled gas, in practical use, the communication end of the breathing mask is communicated with the breathing mask, so that the exhaled gas (exhausted gas) of a wearer can be exhausted from the exhaust port through the ventilation and moisture retention unit, at the moment, the moisture and heat in the exhaled gas are reduced by the ventilation and moisture retention unit, the humidity in the passage section between the communication end of the breathing mask and the ventilation and moisture retention unit is increased, the moisture can be condensed in the ventilation and moisture retention unit to increase the internal humidity of the ventilation and moisture retention unit, and meanwhile, the temperature of the passage section between the communication end of the breathing mask and the ventilation and moisture retention unit and the moisture retention unit is increased by the heat contained in the exhaled gas, thus, the breathable gas provided to the wearer is supplied to the wearer through the ventilation and moisture retention unit and the passage section between the communication end of the breathing mask and the ventilation and moisture retention unit under the action of the increased humidity and the increased temperature, the ventilation and moisture retention device can provide breathable gas with moisture and heat retention for a wearer, improve the comfort of wearing the breathing mask, and in addition, the ventilation and moisture retention device can be communicated with the breathing mask and the breathing tube, and because of the light convenience of the breathing mask and the breathing tube, the ventilation and moisture retention device has small volume and can be flexibly and conveniently carried, and simultaneously, the ventilation and moisture retention units with various specifications can be arranged in the accommodating section of the ventilation and moisture retention unit according to the requirement, therefore, the ventilation and moisture retention unit can be flexibly and conveniently replaced, and the respiratory gas with moisture and heat retention can be flexibly and conveniently provided for the wearer of the breathing mask.

Further, the ventilation and moisture retention unit includes a ventilation and moisture retention core including a spacer arranged to form a ventilation compartment and a reduction sheet disposed in the ventilation compartment and extending in a bent manner to form a ventilation gap.

Still further, the ventilation and moisture retention unit includes a unit housing, and the ventilation and moisture retention core is disposed in a ventilation passage of the unit housing.

Further, the unit housing includes a plurality of housings detachably connected to form the vent passage when the plurality of housings are connected together.

Further, each of the housings is provided with a respective locating formation, the locating formation of each housing being adapted to engage with the locating formation of an adjacent housing.

Further, a plurality of the housings can be snap-connected by a positioning mechanism therebetween.

Furthermore, the ventilation and moisture retention core body has at least two different specifications capable of realizing different moisture retention and ventilation volumes, and the ventilation and moisture retention core bodies with different specifications are different in at least one aspect of radial size, axial length, material and arrangement mode.

Further, the size of the ventilation channel can be adjusted to fit the ventilation and moisture retention cores of different specifications.

Further, the ventilation and moisture retention device comprises an auxiliary airway for allowing part of the breathing gas to pass through the ventilation and moisture retention device housing without being moisturized by the ventilation and moisture retention core.

Further, the ventilation and moisturizing unit comprises an auxiliary airway for allowing part of the breathing gas to pass directly through the unit housing without moisturizing through the ventilation and moisturizing core.

Further, the ventilated and moisturized core includes a plurality of spacers arranged in a spaced-apart stacked arrangement to form ventilation compartments between adjacent spacers and a relief sheet extending in a curved manner in the ventilation compartments to form the ventilation gaps.

Furthermore, the wave crests and wave troughs formed by bending and extending the slowing sheet are respectively connected with the separation sheets on the respective sides.

Furthermore, the spacer is an annular sheet, a plurality of annular sheets with different sizes are sequentially arranged at intervals and sleeved with the central axis in the radial direction, annular ventilation compartments are formed between adjacent annular sheets, and the retarding sheet extending in a wave shape along the circumferential direction is arranged in each annular ventilation compartment.

Further, the ventilation and moisture preservation unit comprises at least one of the following modes: the first method is as follows: the unit housing is formed with the auxiliary air passage; the second method comprises the following steps: the auxiliary air passage is formed on the ventilation and moisture preservation core body.

Furthermore, the ventilation and moisture retention unit comprises a first mode, the unit shell comprises an outer cylinder shell and an inner cylinder shell which are sleeved at intervals, the ventilation and moisture retention core body is arranged in the interval between the outer cylinder shell and the inner cylinder shell, and an internal channel of the inner cylinder shell is used as the auxiliary air passage;

alternatively, the first and second electrodes may be,

the unit shell comprises an outer cylinder shell and an inner cylinder shell which are sleeved at intervals, the ventilating and moisturizing core body is arranged in the inner cylinder shell, and the outer cylinder shell and the interval between the inner cylinder shells are used as the auxiliary air passage.

Further, the ventilation and moisture retention unit comprises at least one of the following conditions: the first situation is as follows: the two ends of the ventilation channel are respectively provided with a limiting structure, and the ventilation moisturizing core body is positioned between the limiting structures at the two ends; case two: the unit housing is provided with a mounting structure for mounting the ventilation and moisture retention unit.

Still further, the ventilation and moisture retention unit comprises at least one of the following structures: the structure I is as follows: when the ventilation and moisture retention unit comprises a first case, the limiting structure comprises a plurality of limiting strips which are uniformly distributed on the wall of the ventilation channel at intervals in the circumferential direction, and the limiting strips extend to the center of the ventilation channel and are connected in a gathering mode; the structure II is as follows: when the ventilation and moisture retention unit comprises the second case, the mounting structure comprises a plurality of circumferentially spaced snap grooves formed on the outer peripheral surface of the unit housing, and/or the mounting structure comprises a mounting positioning flange formed on the outer peripheral surface of the unit housing.

In addition, the unit housing includes a first housing and a second housing detachably connected in an extending direction of the ventilation channel, wherein a first auxiliary airway section for allowing the breathing gas to directly pass through is formed on the first housing, a second auxiliary airway section for allowing the breathing gas to directly pass through is formed on the second housing, and when the first housing and the second housing are in a connected state, the first auxiliary airway section and the second auxiliary airway section are communicated in the extending direction of the ventilation channel to form an auxiliary airway;

alternatively, the first and second electrodes may be,

first casing includes first outer section of thick bamboo and the first interior section of thick bamboo that the interval cover was established, the second casing includes the outer section of thick bamboo section of second and the interior section of thick bamboo that the interval cover was established first casing with when the second casing is in the connection status, first outer section of thick bamboo with the outer section of thick bamboo of second is connected in order to form outer casing, first interior section of thick bamboo with the second inner tube section is connected in order to form the inner tube casing, the core setting of moisturizing of ventilating is in outer casing with in the interval between the inner tube casing, the inner passage of inner tube casing is as supplementary air flue.

In addition, the passage wall of the passage section includes an end face wall on which the exhaust port is formed.

Further, the end face wall includes an exhaust guide structure for guiding an axial flow of the gas discharged from the exhaust port.

Still further, the exhaust guide structure includes axial protrusions provided on an inner port edge and an outer port edge of the exhaust port, respectively, with an axial straight guide gap formed therebetween.

Further, the inner dimension of the exhaust port is gradually enlarged along the exhaust direction, and/or the exhaust port is arranged obliquely.

Further, the exhaust port includes at least one of the following structures: the structure I is as follows: the exhaust port comprises a plurality of exhaust round holes which are circumferentially arranged at intervals; the structure II is as follows: the exhaust port comprises a plurality of circumferentially spaced and circumferentially extending exhaust slots; the structure is three: the exhaust port comprises a plurality of groups of exhaust slits arranged at intervals in the radial direction, and each group of exhaust slits comprises a plurality of exhaust slits arranged at intervals in the circumferential direction and extending in the circumferential direction.

In addition, an exhaust gap extending in the circumferential direction is formed in the end face wall, an exhaust insert block embedded into the exhaust gap is arranged in the channel section, and an exhaust gap is formed between the outer circumferential surface of the exhaust insert block and the inner circumferential surface of the exhaust gap to serve as the exhaust port.

Further, the two opposite sides of the exhaust insert block in the radial direction are respectively provided with the exhaust gaps, the exhaust gaps on the two sides are obliquely arranged towards each other, the outer edge of the end face of the outer side of the exhaust insert block and the edge of the outer side opening of the exhaust notch are respectively provided with an axial bulge on the outer side, and an axial straight guide gap is formed between the axial bulges on the outer side; the inner side edge of the outer side end face of the exhaust insert block and the inner side opening edge of the exhaust gap are respectively provided with an inner side axial bulge, and an axial straight guide gap is formed between the inner side axial bulges.

Further, the channel section comprises at least one of the following structures: the structure I is as follows: connecting clamping grooves and positioning clamping blocks which are alternately arranged in the circumferential direction are formed on the outer side surface of the channel wall of the channel section; the structure II is as follows: a plurality of axial grooves which are uniformly distributed at intervals in the circumferential direction are formed on the outer side surface of the channel wall of the channel section; the structure is three: the channel segments have circumferentially extending annular connecting grooves formed in the outer side surfaces of the channel walls.

Further, the ventilation and moisture retention device housing includes a ventilation and noise reduction unit provided at the exhaust port for allowing exhaust to pass therethrough and capable of reducing exhaust noise.

Still further, the venting and noise reducing unit includes a venting and noise reducing core and an outer cover, wherein the outer cover is formed with a vent opening, the outer cover is connected to the channel segment, the venting and noise reducing core is positioned between the outer cover and the channel segment, and the exhaust port is in exhaust communication with the vent opening through the venting and noise reducing core.

Still further, the outer cover includes an outer ring and an inner ring, the inner ring disposed within the outer ring and maintaining an annular spacing, the outer ring connected to the inner ring by a plurality of circumferentially spaced apart tie bars disposed within the annular spacing, wherein the plurality of tie bars divide the annular spacing into the vent openings; wherein the housing comprises at least one of: the structure I is as follows: a plurality of axial protrusions which are uniformly distributed at intervals in the circumferential direction are formed on the inner circumferential surface of the inner ring body, and the plurality of axial protrusions are used for being matched with a plurality of axial grooves which are uniformly distributed at intervals in the circumferential direction and are formed on the outer side surface of the channel wall of the channel section; the structure II is as follows: the inner circumferential surface of the outer ring body is provided with connecting clamping blocks and positioning clamping grooves which are alternately arranged in the circumferential direction, wherein inlets of the positioning clamping grooves are respectively extended to two sides in the circumferential direction in an expanding way, and the connecting clamping blocks and the positioning clamping grooves are used for being respectively matched with the connecting clamping grooves and the positioning clamping blocks which are alternately arranged in the circumferential direction and are formed on the outer side surface of the channel wall of the channel section; the structure is three: the inner circumferential surface of the outer ring body is provided with a plurality of connecting buckles which are arranged at intervals in the circumferential direction and are used for being clamped with annular connecting grooves which are formed on the outer side surface of the channel wall of the channel section and extend in the circumferential direction.

In addition, the ventilation and moisture retention device shell comprises a connecting sleeve, wherein the connecting sleeve is sleeved on the communicating end of the breathing pipe.

Further, a radial through opening axially extending from the front end face is formed in a channel wall of the breathing tube communication end, the channel wall comprises a thin-wall section axially extending from the front end face and having a reduced wall thickness, and a circumferential protrusion is formed on the outer circumferential surface of the thin-wall section, so that a circumferential clamping groove is formed between the circumferential protrusion and the thick-wall section of the channel wall; circumferential buckles and positioning blocks which are circumferentially arranged at intervals are formed on the inner circumferential surface of the connecting sleeve; the locating piece can cooperate in the radial through hole, circumference buckle joint is in the circumference draw-in groove.

In addition, the ventilation and moisture retention device shell comprises a first cylinder and a second cylinder, wherein one end of the first cylinder and one end of the second cylinder are detachably connected; the internal passage of the first cylinder and the internal passage of the second cylinder form the breathing passage; the other end of the first barrel body is a breathing mask communication end, and the other end of the second barrel body is a breathing pipe communication end.

In addition, a plurality of axial convex ribs which are uniformly distributed at intervals in the circumferential direction are formed on the inner circumferential surface of the inner channel of the first cylinder body, and inclined guide surfaces are formed on the axial convex ribs;

and/or the presence of a gas in the gas,

first barrel includes toper section of thick bamboo, the tip of toper section of thick bamboo with the respirator link is connected, the main aspects of toper section of thick bamboo with the unit of moisturizing of ventilating holds the section and connects, the main aspects of toper section of thick bamboo with the unit of moisturizing of ventilating holds the junction of section and is formed with and is used for carrying out spacing backstop step to the unit of moisturizing of ventilating that holds in the unit of moisturizing of ventilating holds the section.

In addition, a stopping rib used for limiting the ventilation and moisture retention unit contained in the ventilation and moisture retention unit containing section is formed in the second barrel.

In addition, the invention provides a breathing mask, which comprises a ventilation and moisture retention unit and a mask body with a breathing cavity, wherein an exhaust channel is formed on the wall of the breathing cavity, the ventilation and moisture retention unit is arranged in the exhaust channel, and the ventilation and moisture retention unit is used for allowing exhaled air to pass so as to be exhausted and can slow down the passing of moisture and heat in the exhaled air.

In the breathing mask, because the cavity wall of the breathing cavity is provided with the exhaust channel, the ventilation and moisture retention unit is arranged in the exhaust channel and is used for allowing the exhaled air to pass so as to be exhausted and slowing down the passing of moisture and heat in the exhaled air, so that the exhaled air (exhaust air) of a wearer can be exhausted from the exhaust channel through the ventilation and moisture retention unit, at the moment, the moisture and heat in the exhaled air can increase the humidity and increase the temperature in the breathing cavity under the slowing down action of the ventilation and moisture retention unit, so that after the breathable air provided for the wearer enters the breathing cavity, the breathable air with moisture and heat retention can be provided for the wearer under the action of the increased humidity and increased temperature, the comfortable feeling of wearing the breathing mask is improved, and in addition, the breathing mask is generally small in size and can be flexibly and conveniently carried, thereby being capable of flexibly and conveniently providing the respiratory gas with moisture retention and heat retention for the wearer of the respiratory mask.

In addition, the invention provides a breathing mask assembly, which comprises a breathing mask and the ventilation and moisture retention device, wherein the breathing mask comprises a mask body with a breathing cavity, and the breathing mask communication end is communicated with the breathing cavity.

Thus, as mentioned above, the breathing mask assembly can flexibly and conveniently provide moisture and heat retaining breathing gas for a wearer, and improves the comfort of wearing the breathing mask.

Further, the respiratory mask assembly includes at least one of: the first method is as follows: the ventilation and moisture retention device is used as a connecting pipe connected to the mask body; the second method comprises the following steps: the breathing mask communication end is connected with the mask body through a flexible pipe section; the third method comprises the following steps: the mask body is connected with a connecting pipe communicated with the breathing cavity, and the communication end of the breathing mask is connected with the connecting pipe; the method is as follows: the mask body is connected with a connecting pipe communicated with the breathing cavity, and the communicating end of the breathing mask is connected with the connecting pipe through a flexible pipe section.

Furthermore, the present invention provides a respiratory support apparatus comprising a ventilator, a breathing tube, and the respiratory mask described above, wherein the ventilator and the respiratory mask are in communication through the breathing tube; alternatively, the respiratory support apparatus comprises a ventilator, a breathing tube and any of the above respiratory mask assemblies, wherein the ventilator and the breathing tube communication end are in communication via the breathing tube.

Drawings

Fig. 1 is a schematic structural view of a respiratory mask assembly according to an embodiment of the present invention, in which a structure of a ventilation and moisture retention device according to an embodiment of the present invention is shown;

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

FIG. 3 is a schematic view of a first construction of the ventilating and moisturizing unit of FIG. 2;

FIG. 4 is an enlarged schematic view of the circle in FIG. 3;

fig. 5 is a second schematic structural view of the ventilating and moisturizing unit in the ventilating and moisturizing device in fig. 2;

fig. 6 is a schematic view of a third structure of the ventilating and moisturizing unit in the ventilating and moisturizing device in fig. 2;

FIG. 7 is a schematic view of the construction of the unit of FIG. 6 disposed in a housing of a device;

FIG. 8 is a schematic view of a first configuration of a second cartridge in one configuration of the housing of the device of FIG. 2;

FIG. 9 is a cross-sectional structural view of the second barrel of FIG. 8;

FIG. 10 is a schematic view of a second barrel in one configuration of the housing of the device of FIG. 2;

FIG. 11 is a schematic end view of the second barrel of FIG. 10;

FIG. 12 is a side view schematic of the second barrel of FIG. 10;

FIG. 13 is a schematic view of a third configuration of a second cylinder in one configuration of the housing of the device of FIG. 2;

FIG. 14 is a cross-sectional structural view of the second barrel of FIG. 13;

fig. 15 is a schematic view of a first structure of the outer cover of the ventilating and moisturizing device in fig. 2;

fig. 16 is a schematic view of a second structure of the outer cover of the ventilating and moisturizing device in fig. 2;

FIG. 17 is a third schematic view of the housing of the device of FIG. 2;

fig. 18 is a schematic structural view of a connecting sleeve in the ventilating and moisturizing device in fig. 2;

FIG. 19 is a cross-sectional structural view of FIG. 18;

FIG. 20 is a schematic end view of the structure of FIG. 18;

FIG. 21 is a schematic view of a first cartridge in one configuration of the housing of the device of FIG. 2;

FIG. 22 is a cross-sectional structural view of FIG. 21;

FIG. 23 is a schematic diagram of one configuration of a flexible tubing segment of the respiratory mask assembly of FIG. 2;

fig. 24 is a schematic structural view showing an exhaust gap formed as an exhaust port in the second cylinder in a structure of the housing of the ventilating and moisturizing device according to the embodiment of the present invention;

FIG. 25 is an enlarged schematic view of the circled portion of FIG. 24;

FIG. 26 is a schematic end view of the structure of FIG. 24;

fig. 27 is another schematic structural view of the housing of the ventilating and moisturizing device in the ventilating and moisturizing device according to the embodiment of the present invention, showing the exhaust port formed in the second cylinder as an exhaust gap;

FIG. 28 is a structural schematic view of one perspective of the unit housing of FIG. 3;

fig. 29 is a structural schematic diagram of one perspective of the unit housing of fig. 5.

Description of the reference numerals

1-a ventilation and moisture retention device shell, 2-a breathing channel, 3-a breathing mask connecting end, 4-a breathing pipe connecting end, 5-a ventilation and moisture retention unit accommodating section, 6-an exhaust port, 7-a ventilation and moisture retention unit, 8-an auxiliary air passage, 9-a unit shell, 10-a ventilation and moisture retention core, 11-a ventilation channel, 12-a spacer, 13-a slowing sheet, 14-a ventilation compartment, 15-a ventilation gap, 16-a wave crest, 17-a wave trough, 18-an outer cylinder shell, 19-an inner cylinder shell, 20-a limiting strip, 21-a buckling groove, 22-a mounting and positioning flange, 23-a first shell, 24-a second shell, 25-an end face wall, 26-an inner side surface, 27-an axial bulge and 28-an axial straight guide gap, 29-exhaust notches, 30-exhaust inserts, 31-outside end faces, 32-connecting clamping grooves, 33-positioning clamping blocks, 34-axial grooves, 35-annular connecting grooves, 36-ventilation and noise reduction units, 37-ventilation and noise reduction cores, 38-outer covers, 39-ventilation openings, 40-outer rings, 41-inner rings, 42-connecting strips, 43-connecting clamping blocks, 44-positioning clamping grooves, 45-connecting buckles, 46-connecting sleeves, 47-radial through openings, 48-thin wall sections, 49-circumferential protrusions, 50-thick wall sections, 51-first annular clamping grooves, 52-second annular clamping grooves, 53-annular stop flanges, 54-assembling sections, 55-annular bosses, 56-assembling cavities, 57-annular clamping flanges, 58-flexible convex rib, 59-stopping rib, 60-circumferential clamping groove, 61-circumferential buckle, 62-positioning block, 63-first cylinder, 64-second cylinder, 65-axial convex rib, 66-inclined guide surface, 67-mask body, 68-ventilation and moisture retention device, 69-connecting pipe, 70-flexible pipe section, 71-positioning structure, 72-conical pipe section and 73-stopping step.

Detailed Description

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1, 2 and 7, the ventilation and moisture retention device 68 provided by the present invention comprises a ventilation and moisture retention device housing 1 and a plurality of ventilation and moisture retention units 7 with different specifications, wherein the ventilation and moisture retention device housing 1 comprises a breathing passage 2, such that a breathing airflow can pass through the breathing passage 2, one end of the breathing passage 2 is a breathing mask communication end 3, the other end of the breathing passage 2 is a breathing tube communication end 4, the breathing passage 2 comprises a ventilation and moisture retention unit accommodating section 5 located between the breathing mask communication end 3 and the breathing tube communication end 4, and an exhaust port 6 is arranged on a passage wall of a passage section of the breathing passage 2 located between the ventilation and moisture retention unit accommodating section 5 and the breathing tube communication end 4; the humidity of at least one of the ventilating and moisturizing units 7 is different from the humidity of one or more of the other ventilating and moisturizing units 7, the ventilating and moisturizing unit 7 is arranged in the ventilating and moisturizing unit accommodating section 5, and the ventilating and moisturizing unit 7 is used for allowing the breathing gas to pass and can slow down the moisture and heat in the exhaled gas.

In the ventilation and moisture retention device, the ventilation and moisture retention unit 7 is arranged in the ventilation and moisture retention unit accommodating section 5 of the breathing passage 2, and the ventilation and moisture retention unit 7 can be used for allowing the breathing gas to pass and can slow down the moisture and heat in the exhaled gas. In practical use of the ventilation and moisture retention device 68, the breathing mask communication end 3 is communicated with the breathing mask, so that the exhaled air (exhaust air) of the wearer can be exhausted from the exhaust port 6 through the ventilation and moisture retention unit 7, at this time, under the slowing effect of the ventilation and moisture retention unit 7, the humidity in the passage section between the breathing mask communication end 3 and the ventilation and moisture retention unit 7 is increased, and the moisture can be condensed in the ventilation and moisture retention unit 7, so that the internal humidity of the ventilation and moisture retention unit 7 is also increased. Meanwhile, the temperature of the channel section between the breathing mask communication end 3 and the ventilation and moisture preservation unit 7 and the temperature of the ventilation and moisture preservation unit 7 can be increased by the heat contained in the exhaled air, so that the breathable air provided for the wearer passes through the ventilation and moisture preservation unit 7 and the channel section between the breathing mask communication end 3 and the ventilation and moisture preservation unit 7, the humidity and the temperature of the breathable air are improved under the action of the increased humidity and the increased temperature, the breathable air with moisture and heat preservation can be provided for the wearer by the ventilation and moisture preservation device, and the comfortable feeling of wearing the breathing mask is improved. In addition, this device of moisturizing of ventilating can communicate with respirator and breathing pipe, because respirator and breathing pipe's light-duty convenience, consequently, this device of moisturizing of ventilating is small and can carry in a flexible way conveniently. Simultaneously, the unit of moisturizing of ventilating of multiple different specifications can be installed in the unit of moisturizing of ventilating holds the section as required to can change required unit of moisturizing of ventilating in a flexible way conveniently, thereby can provide the breathing gas of moisturizing heat to the wearer of respirator in a flexible way conveniently.

In addition, the ventilation and moisture retention device 68 may not include the auxiliary airway 8, for example, for a large radial size ventilation and moisture retention unit, or for a patient with good respiratory capacity, the auxiliary airway 8 may not be needed to assist breathing, so that the respiratory gas passes through the ventilation and moisture retention unit 7 completely. Alternatively, referring to fig. 7, the ventilating and moisturizing device includes an auxiliary airway 8 for allowing a part of the respiratory gas to pass through the housing 1 of the ventilating and moisturizing device without being moisturized by the ventilating and moisturizing core 10. That is, part of the respiratory gas, that is, the exhaled gas and the breathable gas, may directly pass through the auxiliary airway 8 without passing through the ventilation and moisture retention unit 7, so that the short circuit of the respiratory gas may be prevented, and the smooth breathing gas and the effective exhalation gas discharge may be ensured. Of course, it is to be understood that the ventilation and moisture retention device 68 may form the auxiliary airway 8 in various ways, for example, in one way, the auxiliary airway 8 may be formed between the ventilation and moisture retention unit and the ventilation and moisture retention device housing 1, such as an axially extending groove may be formed on the inner circumferential surface of the ventilation and moisture retention unit accommodating section 5 to form the auxiliary airway 8, or in another way, an axial through channel may be formed in the ventilation and moisture retention unit 7 to form the auxiliary airway 8, for example, an axial through channel may be formed at the central axis of the ventilation and moisture retention unit 7 in fig. 7, of course, an axial through channel may also be formed at other positions of the ventilation and moisture retention unit 7, such as on the outer circumferential surface of the ventilation and moisture retention unit 7.

In addition, the ventilation and moisturizing unit 7 may have various forms, for example, in one form, the ventilation and moisturizing unit 7 includes only the ventilation and moisturizing core 10, that is, the ventilation and moisturizing core is formed as a ventilation and moisturizing unit, as shown in fig. 3, and the ventilation and moisturizing core 10 may be directly provided in the ventilation and moisturizing unit housing section 5 to allow the passage of the breathing gas and to be capable of slowing the passage of moisture and heat in the exhaled gas. Alternatively, in another form, as shown in fig. 3 to 6, the ventilation and moisture retention unit 7 includes a unit housing 9 and a ventilation and moisture retention core 10 for allowing the passage of the breathing gas and capable of slowing down the passage of moisture and heat in the exhaled gas, wherein a ventilation channel 11 is formed in the unit housing 9, and the ventilation and moisture retention core 10 is disposed in the ventilation channel 11. In this way, the ventilating and moisturizing core 10 provided in the unit housing 9 can be well protected, and the unit housing 9 can be fitted in the ventilating and moisturizing unit housing section 5, so that the ventilating and moisturizing core 10 provided in the ventilation passage 11 allows the passage of the breathing gas and can slow down the passage of moisture and heat in the exhaled gas.

In addition, the air-permeable and moisture-retaining core 10 may have a compact structure, for example, the air-permeable and moisture-retaining core 10 may include a plurality of air-permeable cloths arranged in a stack, the plurality of air-permeable cloths extending in a radial cross section of the air-permeable passage 11, so that the breathing gas passes through the plurality of air-permeable cloths layer by layer. Alternatively, to further facilitate exhaled air venting, a vent gap 15 is formed in the vented, moisturizing core 10, as shown in fig. 4. Thus, the breathing gas can pass through the ventilation gap 15, and the smoothness of breathing is further improved.

Of course, the vent gap 15 has various forms, for example, it may be a straight vent gap extending axially, or a vent gap extending spirally, or a vent gap formed by bending a curve back and forth in the axial direction, or the like. For example, referring to fig. 4, the ventilated and moisturised core 10 comprises a spacer 12 and a mitigation sheet 13, the spacer 12 being arranged to form a ventilation compartment 14 and the mitigation sheet 13 being disposed in the ventilation compartment 14 and extending in a curved manner to form a ventilation gap 15.

The spacer 12 may form the venting compartment 14 in a variety of arrangements, for example one arrangement of spacers 12 where the vented moisturizing core 10 comprises a plurality of spacers 12 and a plurality of cushioning sheets 13, the plurality of spacers 12 being arranged in spaced-apart stacks to form the venting compartment 14 between adjacent spacers, the cushioning sheets 13 extending in flexion in the venting compartment 14 to form the venting gap 15. In this way, the vent gap 15 extending in the axial direction of the vent passage 11 can be formed.

In addition, the mitigation sheet 13 may be spaced apart from the adjacent spacer sheet 12, for example, the ventilated moisturizing core 10 may include a ventilated end sheet on which the spacer sheet 12 and the mitigation sheet 13 may be disposed upright. Alternatively, as shown in fig. 4, the peaks 16 and valleys 17 formed by bending and extending the slowing sheets 13 are respectively connected to the respective side separator sheets 12, so that a plurality of slowing sheets 13 can sequentially connect the respective adjacent separator sheets 12 to form an integral body.

Alternatively, the spacer sheets 12 may be flat spacer sheets such that adjacent spacer sheets 12 in a spaced apart stacked arrangement define flat vent compartments 14 therebetween, and the relief sheet 13 may divide the vent compartments 14 into flat extending vent gaps 15 within the vent compartments 14. Alternatively, as shown in fig. 4, the spacer 12 is an annular plate, a plurality of annular plates with different sizes are sequentially spaced and sleeved in the radial direction with the same central axis, annular ventilation compartments 14 are formed between adjacent annular plates, and a slowing plate 13 extending in an undulated manner along the circumferential direction is arranged in each annular ventilation compartment 14 to divide the annular ventilation compartments 14 into ventilation gaps 15 extending in a straight manner. The annular sheets can be circular sheets or square annular sheets.

In yet another example of an arrangement of the septa 12, one or more septa 12 are wrapped circumferentially and helically outwardly to extend and maintain radial spacing, the radial spacing between adjacent septa serves as a plenum chamber 14, i.e., a plenum chamber 14 is also formed circumferentially and helically outwardly, and the mitigation sheets 13 are disposed within the plenum chamber 14 and are helically circumferentially and outwardly extended, with the mitigation sheets 13 also flexing to extend themselves to form a plenum gap 15.

In addition, the unit case 9 includes a plurality of cases detachably connected, which when connected together can form the ventilation channel 11. Like this, a plurality of casings can be dismantled to can change required core of moisturizing of ventilating in a flexible way conveniently.

In addition, to further enhance the ease of connection of the plurality of housings, each housing is provided with a respective locating feature 71, see fig. 28 and 29, which is adapted to engage with a locating feature of an adjacent housing, such that, by engagement of adjacent locating features, the respective housings can be more efficiently and easily connected to form the vent passage 11.

Of course, the positioning structure may have various structural forms, and one structural form of the positioning structure, for example, in the structure shown in fig. 28 and 29, a positioning groove is formed on one housing, and a positioning projection is formed on the other housing, and the positioning projection may be inserted and clamped in the positioning groove. Alternatively, in another structure form of the positioning structure, one housing is formed with a positioning arm, and the other housing is formed with a positioning guide groove, and the positioning arm can enter into the positioning guide groove and move.

In addition, the detachable connection of the plurality of housings may be of various types, for example, one type in which the respective housings are connected by being threadably engaged, or another type in which a part of one housing may be nested within another housing and locked by a locking member at the nested overlapping portion thereof, or yet another type in which the plurality of housings can be snap-connected, for example, one housing is formed with a snap groove and the other housing is formed with a snap, into which the snap can be snapped. Further, the plurality of shells can be connected in a snap-fit manner through the positioning structures, so that the structures of the positioning structures can be fully utilized to connect the plurality of shells. For example, the positioning arm may be an elastic arm, a buckle is formed at a front end of the elastic arm, the elastic arm enters the positioning guide groove and moves to a stop position, and the buckle may be snapped into a recess on a groove wall of the positioning guide groove.

In addition, in the ventilation and moisture retention unit, a plurality of casings may be detachably connected in the radial direction, for example, the left and right casing halves may be joined to each other to form the unit casing 9. Alternatively, as shown with reference to fig. 3 and 5, the plurality of housings include a first housing and a second housing arranged in the axial direction.

In addition, in this ventilation and moisture retention unit, in order to make this ventilation and moisture retention unit can satisfy different user demands, ventilation and moisture retention core 10 has at least two kinds of different specifications that can realize different moisture retention and ventilation volume, and the ventilation and moisture retention core of different specifications is different in radial dimension, axial length, material and at least one side in the mode of arranging. Like this, can select for use the core of moisturizing of ventilating of required specification according to actual demand to satisfy the in-service use demand more nimble.

In addition, in this ventilation and moisture retention unit, the size of the ventilation channel 11 can be adjusted to fit ventilation and moisture retention cores 10 of different specifications. For example, the axial dimension of the ventilation channel 11 can be adjusted, for example, the first housing and the second housing which are axially arranged can adjust the connection position, for example, a plurality of clamping grooves which are axially arranged at intervals are formed on the first housing, and the elastic arms on the second housing can be respectively clamped into the clamping grooves, so that the axial position between the first housing and the second housing is adjusted to adjust the axial dimension of the ventilation channel 11, and the assembly of the ventilation moisturizing cores with different axial dimensions is met. Alternatively, the radial dimension of the ventilation channel 11 can be adjusted, for example, a required number of inner housings can be sleeved in the outer housing according to actual requirements, so that the inner channel of the innermost inner housing will be used as the ventilation channel 11, and the radial dimension of the ventilation channel 11 can also be adjusted, thereby meeting the assembly requirements of ventilation and moisture retention cores with different radial dimensions.

In addition, referring to fig. 3, the ventilation and moisturizing unit may not include a secondary airway 8, for example, for a large radial size ventilation and moisturizing unit, or for a patient with better respiratory capacity, the secondary airway 8 may not be needed to assist breathing, so that the breathing gas passes entirely through the ventilation and moisturizing core 10. Alternatively, referring to fig. 5 and 6, the ventilation and moisturizing unit 7 includes an auxiliary airway 8 for allowing a part of the respiratory gas to pass through the unit housing 9 directly without being moisturized by the ventilation and moisturizing core 10. In this way, part of the respiratory gas, i.e. the exhaled gas and the breathable gas, can pass directly through the secondary airway 8 without passing through the moisturizing treatment of the ventilated and moisturized wick 10 (i.e. the secondary airway 8 allows the respiratory gas to pass through but does not slow down the passage of moisture and heat in the respiratory gas), so that the short circuit of the respiratory gas can be prevented, the respiratory gas is ensured to be smooth, and the exhalation gas is effectively discharged.

Of course, it will be appreciated that the ventilating and moisturizing unit may form the auxiliary airway 8 in a variety of ways, for example, the ventilating and moisturizing unit includes at least one of the following: the first method is as follows: the unit housing 9 is formed with an auxiliary air passage 8, for example, an axially extending groove is formed on the inner peripheral surface of the ventilation channel 11 to form the auxiliary air passage 8, an axially extending groove is formed on the outer peripheral surface of the ventilation channel 11 to form the auxiliary air passage 8, and/or an axially extending channel, for example, a circumferential channel is formed inside the channel wall of the ventilation channel 11 to form the auxiliary air passage 8, in the structure of fig. 5, a plurality of, for example, four circumferentially spaced channels are formed inside the channel wall of the ventilation channel 11 to form the auxiliary air passage 8; the second method comprises the following steps: the ventilation and moisture retention core 10 is formed with the auxiliary air passage 8, for example, an axially extending groove is formed on the outer peripheral surface of the ventilation and moisture retention core 10 to form the auxiliary air passage 8, and/or an axially extending channel is formed inside the ventilation and moisture retention core 10 to form the auxiliary air passage 8.

In addition, the formation of the auxiliary air passage 8 on the unit housing 9 can be realized by, for example, a structure that the ventilation and moisture retention unit includes a mode in which, in one embodiment, as shown in fig. 6, the unit housing 9 includes an outer cylinder housing 18 and an inner cylinder housing 19 which are sleeved at intervals, and the ventilation and moisture retention core 10 is disposed in the interval between the outer cylinder housing 18 and the inner cylinder housing 19, wherein the inner passage of the inner cylinder housing 19 is used as the auxiliary air passage 8, and the outer cylinder housing 18 can be fitted in the ventilation passage 11. Or, in another embodiment, the unit housing 9 comprises an outer cylinder housing 18 and an inner cylinder housing 19 which are sleeved at intervals, the ventilating and moisturizing core 10 is arranged in the inner cylinder housing 19, and the interval between the outer cylinder housing 18 and the inner cylinder housing 19 is used as the auxiliary air passage 8.

In addition, the ventilation and moisture retention core 10, for example, the plurality of spacers 12 and the slowing sheet 13, may be made of a material having a moisture and heat retention function, or may be made of a material having a sterilization function. For example, nonwoven fabrics such as fiber nonwoven fabrics, filter papers, filter meltblown fabrics, activated carbon fibers, activated carbon fabrics, and the like can be selected.

In addition, referring to fig. 3 and 4, the ventilation and moisture retention unit includes at least one of the following cases: the first situation is as follows: the two ends of the ventilation channel 11 are respectively provided with a limiting structure, and the ventilation moisturizing core 10 is positioned between the limiting structures at the two ends, so that the ventilation moisturizing core 10 can be stably and reliably positioned in the ventilation channel 11 through the limiting structures at the two ends, and meanwhile, the channel wall strength of the ventilation channel 11 can be enhanced through the limiting structures at the two ends; case two: the unit housing 9 is provided with a mounting structure for mounting the ventilating and moisturizing unit, so that the unit housing 9 can be stably and reliably disposed in the ventilating and moisturizing unit housing section 5 of the breathing passage 2 by the mounting structure. Of course, alternatively, the air and moisture retaining core 10 may be interference fitted in the air passage 11, for example, in the structure of fig. 4, the outermost spacer 12 may have a certain supporting strength, and at this time, the outermost spacer 12 may be interference fitted in the air passage 11. In addition, alternatively, the unit housing 9 may also be interference-fitted in the ventilating and moisturizing unit housing section 5.

In addition, the above-mentioned spacing structure and mounting structure may have various forms, for example, the ventilation and moisture retention unit includes at least one of the following structures: the structure I is as follows: when the ventilation and moisture retention unit comprises a first case, the limiting structure comprises a plurality of limiting strips 20 which are uniformly distributed on the wall of the ventilation channel 11 at intervals in the circumferential direction, as shown in fig. 5, the limiting strips 20 extend to the center of the ventilation channel 11 and are connected in a gathering manner, so that the limiting strips 20 can not only axially limit the ventilation and moisture retention core 10, but also can enhance the strength of two ends of the unit shell 9; the structure II is as follows: when the ventilation and moisture retention unit includes case two, the mounting structure includes a plurality of circumferentially spaced snap grooves 21 formed on the outer peripheral surface of the unit housing 9, and/or the mounting structure includes mounting positioning flanges 22 formed on the outer peripheral surface of the unit housing 9, as shown in fig. 6. In this way, the snap groove 21 may be snap-fitted with the snap arm on the inner circumferential surface of the housing section 5, and the mounting and positioning flange 22 may be clamped and positioned on the housing 1, for example, in fig. 7, the housing 1 includes a first cylinder 63 and a second cylinder 64, wherein the first cylinder 63 and the second cylinder 64 may be screwed, for example, after the external thread on the first cylinder 63 and the internal thread on the second cylinder 64 are fitted, the mounting and positioning flange 22 is clamped and positioned between the end surface of the first cylinder 63 and the stop rib on the inner circumferential surface of the second cylinder 64, so as to dispose the unit housing 9 and the core 10 therein in the housing section 5.

Of course, alternatively, the limiting structure may be an annular limiting flange extending inward from the inner circumferential surface of the ventilation channel 11, and the air-and-moisture preserving core 10 is clamped and limited between the two annular limiting flanges, or the limiting structure may be a limiting support short strip extending inward from the inner circumferential surface of the ventilation channel 11, for example, a plurality of limiting support short strips arranged at intervals in the circumferential direction, and the limiting support short strip may not extend to the center of the ventilation channel 11.

In addition, as shown in fig. 5, the unit housing 9 includes a first housing 23 and a second housing 24 detachably connected in the extending direction of the ventilation channel 11, for example, the first housing 23 and the second housing 24 may be connected by screw threads or may be connected by snap-fit structures on the two housings, wherein a first auxiliary airway segment for allowing the breathing gas to directly pass through is formed on the first housing 23, a second auxiliary airway segment for allowing the breathing gas to directly pass through is formed on the second housing 24, and when the first housing 23 and the second housing 24 are in the connected state, the first auxiliary airway segment and the second auxiliary airway segment communicate in the extending direction of the ventilation channel 11 to form the auxiliary airway 8, so that the auxiliary airway 8 may be formed in the wall of the ventilation channel 11.

In addition, as shown in fig. 6, the unit housing 9 includes a first housing 23 and a second housing 24 detachably connected in the extending direction of the ventilation channel 11, for example, the first housing 23 and the second housing 24 may be connected by screw threads, or may be connected by snap-fit structures on the two housings, wherein the first housing 23 includes a first outer cylindrical section and a first inner cylindrical section that are sleeved at intervals, the second housing 24 includes a second outer cylindrical section and a second inner cylindrical section that are sleeved at intervals, for example, the first outer cylindrical section and the second outer cylindrical section may be connected by snap-fit or screw threads, the first inner cylindrical section and the second inner cylindrical section may be connected by butt-fit or snap-fit or screw threads, wherein when the first housing 23 and the second housing 24 are in a connected state, the first outer cylindrical section and the second outer cylindrical section are connected to form the outer cylindrical housing 18, the first inner cylindrical section and the second inner cylindrical section are connected to form the inner cylindrical housing 19, the ventilating and moisturizing core 10 is disposed in the space between the outer cartridge housing 18 and the inner cartridge housing 19, and the inner passage of the inner cartridge housing 19 serves as the auxiliary air duct 8. In addition, as shown in fig. 6, a mounting positioning flange 22 may be formed at an end edge of the first outer cylinder section of the first housing 23.

In addition, the air outlet 6 may be formed at any position of the channel wall of the channel section between the ventilating and moisturizing unit housing section 5 and the breathing tube communicating end 4, for example, the air outlet 6 may be formed on an axially extending side wall of the channel wall, or, as shown with reference to fig. 8 and 9, the channel wall of the channel section between the ventilating and moisturizing unit housing section 5 and the breathing tube communicating end 4 includes an end face wall 25, and the air outlet 6 is formed on the end face wall 25. Thus, the exhaust gas flows axially in the passage section after passing through the ventilating and moisturizing unit 7, and the exhaust ports 6 on the end face wall 25 follow such axial flow of the exhaust gas, so that the exhaust gas flows axially more easily after being discharged from the exhaust ports 6.

In addition, the exhaust gas may flow obliquely sideways after being axially discharged from the exhaust port 6 on the end surface wall 25, so as to collide with the outer surface of the breathing tube connecting end 4, as shown by the dotted arrow in fig. 25, or, in fig. 25, the exhaust gas respectively discharged from the two exhaust ports 6 arranged obliquely toward each other in the exhaust direction may collide crosswise, and a part of the exhaust gas may collide with the outer surface of the breathing tube connecting end 4, as shown by the dotted arrow in fig. 25, so as to generate noise, therefore, in an embodiment of the ventilation and moisture retention device, the end surface wall 25 includes an exhaust guide structure for guiding the axial flow of the exhaust gas discharged from the exhaust port 6, so that although the exhaust strength of the exhaust gas discharged from the exhaust port 6 is relatively high, the exhaust gas will flow for a certain axial distance under the guidance of the exhaust guide structure, so that the exhaust strength is weakened, and the noise generated when the airflow blows against the outer surface of the breathing tube, thereby reducing the exhaust noise and avoiding the noise caused by the gas exhausted from the exhaust port 6 being inclined outward when the exhaust strength is high, for example, colliding with the outer surface of the breathing tube connecting end 4.

In addition, it should be noted here that the exhaust gas guide structure may have various forms, but it should be understood that, regardless of the structure of the exhaust gas guide structure, it is sufficient if the exhaust gas guide structure can guide the axial flow of the exhaust gas and reduce the speed. For example, the exhaust guide structure may be a buffer cylinder having a cross-sectional shape identical to that of the exhaust port 6, which is connected at an outer port edge of the exhaust port 6 such that the exhaust gas discharged from the exhaust port 6 flows and is attenuated in the buffer cylinder. Alternatively, as shown in fig. 25, the exhaust guide structure includes axial protrusions 27 respectively provided on the inner port edge and the outer port edge of the exhaust port 6, axial straight guide gaps 28 are formed between the axial protrusions 27, and the axial straight guide gaps 28 can guide the air to flow for an axial distance in the axial direction, so that the exhaust strength is weakened, and the noise generated when the air flow blows the outer surface of the suction pipe connection end 4 is reduced, thereby reducing the exhaust noise. For example, in fig. 25, the inner and outer exhaust ports 6 are provided in the radial direction, and the axial protrusions 27 are provided on the inner port edge and the outer port edge of each exhaust port 6, respectively, so that, in fig. 25, the inner and outer two axial straight guide gaps 28 can guide the exhaust air flows of the two exhaust ports 6 to axially flow in parallel for a certain distance, and reduce the speed of the air flows, thereby reducing the noise generated by the mutual interference between the air and the communication end 4 of the air flow exhalation suction pipe, and thus reducing the exhaust noise.

In addition, the exhaust port 6 may be a circular hole extending straight in the axial direction, a circumferentially extending hole, or the like. Alternatively, as shown in fig. 9, the inner dimension of the exhaust port 6 is gradually enlarged along the exhaust direction, so that the exhaust airflow is diffused in the exhaust port 6 to the outside while flowing, thereby slowing the exhaust speed and strength, which will reduce the exhaust noise. For example, the exhaust port 6 may be a conical hole or a square conical hole. In addition, in order to slow down the blow of the exhaust gas toward the outer surface of the breathing tube communicating end 4 when the inner dimension of the exhaust port 6 is gradually enlarged along the exhaust direction, alternatively, in fig. 9, the inner side surface 26 of the exhaust port 6 may be extended axially straight in the radial direction.

In addition, the exhaust port 6 may extend straight in the axial direction, or, as shown in fig. 25, the exhaust port 6 may be arranged obliquely, so that the obliquely arranged exhaust port 6 may extend the exhaust path, so that the strength of the air flow is weakened when the exhaust gas flows in the oblique exhaust path to reduce the exhaust noise.

In addition, the exhaust port 6 may have various structural forms. For example, the exhaust port 6 includes at least one of the following structures: the structure I is as follows: as shown in fig. 8, 10, 11 and 13, the exhaust port 6 includes a plurality of exhaust circular holes arranged at intervals in the circumferential direction, and the number of the exhaust circular holes, the circumferential distance between the exhaust circular holes and the inner dimension of the exhaust circular holes can be set according to actual requirements, for example, the inner diameter of the exhaust circular holes can be 0.5-1.5mm, preferably 0.75mm, and the circumferential distance between the exhaust circular holes can be 2-8mm, preferably 4 mm. Like this, in forming die manufacturing process, quantity and internal diameter through the exhaust round hole can control performance such as exhaust flow to accomplish that exhaust flow size is accurate controllable, reduce the exhaust noise, and make forming die preparation simple relatively. The structure II is as follows: referring to fig. 27, the exhaust port 6 includes a plurality of exhaust slits arranged at intervals in the circumferential direction and extending in the circumferential direction to form a single slit exhaust structure in the radial direction, the exhaust slits may be axially straight extending slits or may extend obliquely in the axial direction, and the size of the exhaust slits may be between 0.1mm and 1.0mm, and is preferably 0.4 mm. In this way, exhaust noise can be reduced. The structure is three: referring to fig. 25 and 26, the exhaust port 6 includes a plurality of sets of exhaust slots arranged radially at intervals, each set including a plurality of circumferentially spaced and circumferentially extending exhaust slots, for example, two sets of exhaust slots are provided in fig. 26, each set including four exhaust slots. Each exhaust slot may be an axially straight slot or an axially inclined slot, and the size of the exhaust slot may be between 0.1mm and 1.0mm, preferably 0.4 mm. In this way, exhaust noise can be reduced.

Alternatively, the vent slits may be cut directly into the end face wall 25, such as by laser cutting. Alternatively, as shown in fig. 24 to 26, the end face wall 25 is formed with a circumferentially extending exhaust notch 29, an exhaust insert 30 fitted into the exhaust notch 29 is provided in the passage section, and an exhaust gap is formed between the outer peripheral surface of the exhaust insert 30 and the inner peripheral surface of the exhaust notch 29 as the exhaust port 6. A single exhaust gap may be formed between the exhaust insert 30 and the exhaust gap 29 or two exhaust gaps may be formed.

For example, in one embodiment of the air and moisture retention device, as shown in fig. 25, two opposite sides of the air exhaust insert 30 in the radial direction are respectively formed with air exhaust gaps, that is, the air exhaust insert 30 is located at the middle of the air exhaust gap 29 in the radial direction, the air exhaust gap 29 is a tapered gap with a small top and a large bottom, and the air exhaust insert 30 is a tapered gap with a small top and a large bottom, so that the air exhaust gaps at two sides are obliquely arranged toward each other, wherein the outer edge of the outer end face 31 of the air exhaust insert 30 and the outer port edge of the air exhaust gap 29 are respectively provided with outer axial protrusions 27, and an axial straight guide gap 28 is formed between the outer axial protrusions 27; the inner edge of the outer end face 31 of the exhaust insert 30 and the inner opening edge of the exhaust recess 29 are each provided with an inner axial projection 27, between which inner axial projections 27 an axially straight guide gap 28 is formed. Thus, the exhaust gas flows of the two exhaust slits arranged radially inside and outside flow in parallel for a certain distance under the guidance of the two axially straight guide gaps 28, reducing the noise generated by the mutual interference between the gases and the communicating end 4 of the draft tube, and thus reducing the exhaust noise, as shown by the solid arrows in fig. 25.

In addition, the channel section comprises at least one of the following structures: the structure I is as follows: as shown in fig. 8, the outer side surface of the channel wall of the channel section is formed with connecting notches 32 and positioning notches 33 alternately arranged in the circumferential direction, so that an outer cover 38 described below can be fitted over the channel section to clamp and position the ventilation and noise reduction core 37 on the exhaust port, thereby further reducing the exhaust noise, for example, the connecting notches 32 can be in snap fit with the connecting notches 43 on the outer cover 38, and the positioning notches 33 can be in snap fit with the positioning notches 44 on the outer cover 38 (see fig. 16); the structure II is as follows: as shown in fig. 10-12 and 16, the outer side surface of the channel wall of the channel segment is formed with a plurality of circumferentially spaced axial grooves 34, thus, a shroud 38, described below, may be fitted over the channel section, to clamp the breather noise reduction core 37 in place over the exhaust port, thereby further reducing exhaust noise, for example, axial projection 27 on housing 38 may snap fit into axial recess 34, in another application scenario, the outer cover 38 may also be sleeved on a channel section with a smooth outer circumference, as shown in fig. 8, and at this time, the increased friction between the axial projections on the housing 38 and the channel segments, reduces relative rotation between the housing 38 and the channel segments, it is understood that the housing 38 may not be provided with the axial protrusion 27, that is, the smooth surface of the inner circumference of the housing 38 is sleeved on the channel section of which the outer circumference is smooth; the structure is three: as shown in fig. 13 and 14, a circumferentially extending annular attachment groove 35 is formed in the outer side surface of the channel wall of the channel section so that a cover 38, described below, may be fitted over the channel section to clamp the venting noise reducing core 37 in place over the vent to further reduce the venting noise, e.g., an attachment catch 45 on the cover 38 may snap into the annular attachment groove 35.

In addition, referring to fig. 1 and 2, the ventilation and moisture retention device housing includes a ventilation and noise reduction unit 36 provided at the exhaust port 6 for allowing exhaust gas to pass therethrough and capable of reducing exhaust noise. In this way, after the exhaust gas passes through the ventilation noise reduction unit 36, the exhaust noise can be further reduced.

Of course, the ventilation and noise reduction unit 36 may be disposed at any position of the exhaust port 6, for example, the ventilation and noise reduction unit 36 may be disposed inside a passage section of the breathing passage 2 between the ventilation and moisture retention unit housing section 5 and the breathing tube communication end 4 to cover the exhaust port 6. Alternatively, the ventilation and noise reduction unit 36 may be disposed outside the passage section between the ventilation and moisture retention unit accommodating section 5 and the breathing tube communicating end 4 to cover the exhaust port 6.

For example, in one embodiment, as shown in FIGS. 1 and 2, the ventilation and noise reduction unit 36 includes a ventilation and noise reduction core 37 and an outer cover 38, wherein the outer cover 38 is formed with a ventilation opening 39, the outer cover 38 is attached to the channel segment, the ventilation and noise reduction core 37 is positioned between the outer cover 38 and the channel segment, and the exhaust port 6 is in exhaust communication with the ventilation and noise reduction core 37 and the ventilation opening 39, such that the ventilation and noise reduction core 37 covers the outside of the exhaust port 6 by the engagement of the outer cover 38 and the channel segment, thereby further reducing exhaust noise.

The air-venting noise reducing core 37 may be a filter cotton or a filament mass. In addition, the ventilation and noise reduction core 37 may be selected according to the arrangement shape of the exhaust port 6, for example, for the exhaust port 6 shown in fig. 8, the ventilation and noise reduction core 37 may be an annular body shown in fig. 2.

In addition, the housing 38 may have a variety of configurations, for example, the housing 38 may be an annular mesh that may be snapped onto the channel segments. For example, referring to fig. 15, 16 and 17, the outer casing 38 includes an outer ring 40 and an inner ring 41, the inner ring 41 being disposed within the outer ring 40 and maintaining an annular spacing, the outer ring 40 being connected to the inner ring 41 by a plurality of circumferentially spaced apart connecting strips 42 disposed within the annular spacing, wherein the plurality of connecting strips 42 divide the annular spacing into the vent openings 39, and the connecting strips can confine the filter media mounted therein and stabilize the filter media mounted therein. Thus, as shown in fig. 1 and 2, in one embodiment, the breathing tube connection end 4 may pass through the inner ring 41, while the outer ring 40 is connected to the channel section, thereby positioning the annular filter cotton over the plurality of exhaust ports 6 arranged in an annular manner to further reduce exhaust noise.

In addition, the housing 38 includes any one of the following structures: the structure I is as follows: as shown in fig. 16, the inner circumferential surface of the inner ring 41 is formed with a plurality of circumferentially spaced axial protrusions 27, and the plurality of axial protrusions 27 are adapted to cooperate with a plurality of circumferentially spaced axial grooves 34 formed on the outer surface of the channel wall of the channel section, so that the outer cover 38 can be fitted over the channel section to clamp the ventilation and noise reduction core 37 in position over the exhaust port, thereby further reducing exhaust noise; the structure II is as follows: as shown in fig. 15, the inner circumferential surface of the outer ring body 40 is formed with connecting blocks 43 and positioning slots 44 arranged alternately in the circumferential direction, wherein the inlets of the positioning slots 44 are respectively extended to two sides in the circumferential direction to facilitate the insertion of the positioning blocks 33, the connecting blocks 43 and the positioning slots 44 are used for being respectively matched with the connecting slots 32 and the positioning blocks 33 arranged alternately in the circumferential direction formed on the outer side surface of the channel wall of the channel section, so that the outer cover 38 can be sleeved on the channel section to clamp and position the ventilation noise reduction core 37 on the exhaust port, thereby further reducing the exhaust noise; the structure is three: as shown in fig. 17, a plurality of circumferentially spaced coupling tabs 45 are formed on the inner peripheral surface of the outer ring body 40, the coupling tabs 45 being adapted to engage circumferentially extending annular coupling grooves 35 formed on the outer side surfaces of the channel walls of the channel segments so that the outer cowl 38 can be fitted over the channel segments to clamp and position the ventilation noise reduction core 37 over the exhaust port to further reduce exhaust noise.

In addition, in order to facilitate the connection of the breathing tube, as shown in fig. 1, 2 and 18, the housing of the ventilation and moisture retention device comprises a connecting sleeve 46, wherein the connecting sleeve 46 is sleeved on the communication end 4 of the breathing tube. The union coupling end of adapter sleeve 46 can be the standard end, like this, can connect the respiratory tube conveniently, has promoted the convenience that this device of moisturizing ventilates used.

The nipple 46 may be a standard pipe nipple (see fig. 2) or may be a fitting nipple, which may be selected according to practical requirements.

In addition, the connecting tube sleeve 46 can be screwed on the connecting end 4 of the breathing tube, or can be in interference fit with the connecting end 4 of the breathing tube, or, as shown in fig. 8, 10, 11, 19 and 20, a radial through hole 47 axially extending from the front end surface is formed on the channel wall of the connecting end 4 of the breathing tube, the channel wall comprises a thin-wall section 48 axially extending from the front end surface and having a reduced wall thickness, and a circumferential protrusion 49 is formed on the outer circumferential surface of the thin-wall section 48, so that a circumferential clamping groove 60 is formed between the circumferential protrusion 49 and the thick-wall section 50 of the channel wall; the inner peripheral surface of the connecting sleeve 46 is provided with circumferential buckles 61 and positioning blocks 62 which are circumferentially arranged at intervals; the positioning block 62 can be matched in the radial through opening 47, and the circumferential buckle 61 is clamped in the circumferential clamping groove 60. Like this, through radial through-hole 47, can make thin wall section 48 take place extrusion deformation to be convenient for circumference buckle 61 joint in circumference draw-in groove 60, in order to realize the convenient dismouting between respiratory tube intercommunication end 4 and the adapter sleeve 46. When the housing 38 and the second cylinder 64 are configured to be non-rotatably connected, a first alignment indicator is provided on the housing 38 and a second alignment indicator is provided on the pipe coupling sleeve 46, and when the pipe coupling sleeve 46 and the second cylinder 64 are connected, the first alignment indicator and the second alignment indicator are aligned to achieve quick connection of the pipe coupling sleeve 46 and the second cylinder 64, it can be understood that when the housing 38 and the second cylinder 64 are rotatably connected, the first alignment indicator can be provided on the second cylinder 64 or other non-rotatable components.

In addition, the housing 1 of the ventilation and moisture retention device can be a pipe section, and the ventilation and moisture retention unit 7 can be clamped in the pipe section. Alternatively, as shown in fig. 2, in order to facilitate the detachment and installation of the ventilation and moisturizing unit 7, the ventilation and moisturizing device housing 1 includes a first cylinder 63 and a second cylinder 64, wherein one end of the first cylinder 63 and one end of the second cylinder 64 are detachably connected; the internal passage of the first cylinder 63 and the internal passage of the second cylinder 64 form a breathing passage 2; the other end of the first barrel 63 is a breathing mask communication end 3, and the other end of the second barrel 64 is a breathing tube communication end 4. In this way, after the ventilation and moisture retention unit 7 is installed in the internal passage of one of the first cylinder 63 and the second cylinder 64, the first cylinder 63 and the second cylinder 64 may be connected to each other. In addition, the detachable connection of the first cylinder 63 and the second cylinder 64 can facilitate the replacement of the ventilation and moisture retention unit 7 with different specifications according to actual requirements.

The first barrel 63 and the second barrel 64 may be threaded or may be snap-fit.

In addition, as shown in fig. 14, a stopper rib 59, for example, an annular stopper rib 59, is formed in the second cylinder 64, so that the moisturizing and ventilating unit can abut on the stopper rib 59, so that a certain axial space is provided between the moisturizing and ventilating unit and the exhaust port 6, and exhaust gas can be discharged from the exhaust port 6.

In addition, as shown in fig. 21 and 22, a plurality of axially-directed ribs 65 are formed on the inner peripheral surface of the internal passage of the first cylinder 63 at circumferentially spaced intervals, and the axially-directed ribs 65 are formed with inclined guide surfaces 66. In this way, the ventilation and moisture retention unit 7 can be snapped into the internal passage of the first cylinder 63 along the inclined guide surface 66. The number of the axial ribs 65 may be one or more, and a plurality of the axial ribs 65 are uniformly distributed at intervals in the circumferential direction.

In addition, as shown in fig. 22, the first cylinder 63 includes a tapered cylinder section 72, a small end of the tapered cylinder section 72 is connected to the breathing mask connection end 3, a large end of the tapered cylinder section 72 is connected to the ventilation and moisture retention unit accommodating section 5, and a stop step 73 for limiting the ventilation and moisture retention unit accommodated in the ventilation and moisture retention unit accommodating section 5 is formed at a connection point of the large end of the tapered cylinder section 72 and the ventilation and moisture retention unit accommodating section 5. In this way, after the ventilating and moisturizing unit is accommodated in the ventilating and moisturizing unit accommodating section 5, the ventilating and moisturizing unit is stably and reliably positioned by the stop step 73. In addition, the conical barrel section 72 may also have a converging effect on the inhaled air flow to make the inhaled air flow smoother.

In addition, referring to fig. 14, a stopper rib 59 for restricting the ventilating and moisturizing unit accommodated in the ventilating and moisturizing unit accommodating section 5 is formed in the second cylinder 64. In this way, after the ventilating and moisturizing unit is accommodated in the ventilating and moisturizing unit accommodating section 5, the ventilating and moisturizing unit is stably and reliably positioned by the stop rib 59.

In addition, the invention provides a breathing mask, which comprises a ventilation and moisture retention unit and a mask body with a breathing cavity, wherein an exhaust channel is formed on the wall of the breathing cavity, the ventilation and moisture retention unit is arranged in the exhaust channel, and the ventilation and moisture retention unit is used for allowing exhaled air to pass so as to be exhausted and can slow down the moisture and heat in the exhaled air.

In this respiratory mask, the ventilation and moisture retention unit may be any of the ventilation and moisture retention units described above in the ventilation and moisture retention device 68.

Furthermore, the present invention provides a respiratory mask assembly comprising a respiratory mask and the ventilation and moisture retention device 68 as described in any of the above, wherein the respiratory mask comprises a mask body 67 having a respiratory cavity, and the respiratory mask communication end 3 is in communication with the respiratory cavity. It will be appreciated that the ventilation and moisture retention device 68 may be fixedly attached to the respiratory mask assembly or may be removably attached to the respiratory mask assembly.

Additionally, the respiratory mask assembly includes at least one of: the first method is as follows: the ventilating and moisturizing device 68 serves as a connection pipe 69 connected to the mask body 67, that is, the ventilating and moisturizing device 68 may be directly connected to the breathing mask to be connected to the breathing pipe. The connection pipe 69 may be a straight pipe or a bent pipe; the second method comprises the following steps: the breathing mask communication end 3 is connected with the mask body 67 through the flexible pipe section 70, that is, the breathing mask communication end 3 is used as a separate accessory and can be connected with the mask body 67 through the flexible pipe section 70 when in use; the third method comprises the following steps: the mask body 67 is connected with a connecting pipe 69 communicated with the breathing cavity, and the breathing mask communication end 3 is connected with the connecting pipe 69, namely, the breathing mask communication end 3 is used as an independent accessory and is connected with the connecting pipe 69 when in use; the method is as follows: as shown in fig. 1 and 2, the connecting pipe 69 connected to the breathing chamber is connected to the mask body 67, and the breathing mask connecting end 3 is connected to the connecting pipe 69 via the flexible pipe section 70, so that the breathing mask can be extended at different distances for use via the flexible pipe section 70.

The flexible tube section 70 may be telescoping to change length, for example, the flexible tube section 70 may be a bellows.

In addition, both ends of the flexible pipe section 70 may be respectively formed with the same coupling structure, for example, a first annular catching groove 51 and a second annular catching groove 52 may be respectively formed to be coupled with the coupling pipe 69 and the breathing mask communication end 3, respectively. In addition, flexible ribs 58 are formed on the outer surface of the flexible tube segment 70 to increase the strength of the flexible tube segment 70. The flexible ribs 58 may be axially extending ribs, may be a plurality of axially spaced annular ribs, or may be helically extending ribs.

In addition, as shown in fig. 22 and 23, the breathing mask communication end 3 of the first cylinder 63 includes a fitting cavity 56 and an annular boss 55 and an annular catching flange 57 disposed in the fitting cavity 56, and one end of the flexible tube section 70 is formed with a fitting section 54 and a second annular catching groove 52 and an annular stopping flange 53 disposed at both axial ends of the fitting section 54, so that the fitting section 54 can be fitted in the fitting cavity 56, the annular catching flange 57 can be caught in the second annular catching groove 52, and the annular stopping flange 53 abuts on the annular boss 55, so that the fitting section 54 and the second annular catching groove 52 and the annular stopping flange 53 disposed at both axial ends of the fitting section 54 are disposed in the fitting cavity 56, thereby improving the reliability of the connection between the flexible tube section 70 and the breathing mask communication end 3.

Finally, the invention provides a respiratory support device comprising a ventilator, a breathing tube and the above described respiratory mask, wherein the ventilator and the respiratory mask are in communication via the breathing tube; alternatively, the respiratory support apparatus comprises a ventilator, a breathing tube, and a respiratory mask assembly as described in any of the above, wherein the ventilator and breathing tube communication end 4 are in communication via the breathing tube.

In this way, the quality of the respiratory support apparatus is effectively improved, as described above.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention. Including each of the specific features, are combined in any suitable manner. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.

Claims

1. A device for ventilating and moisturizing, comprising:

the ventilation and moisture retention device comprises a ventilation and moisture retention device shell (1), wherein the ventilation and moisture retention device shell (1) comprises a breathing passage (2), one end of the breathing passage (2) is a breathing mask communication end (3), the other end of the breathing passage (2) is a breathing tube communication end (4), the breathing passage (2) comprises a ventilation and moisture retention unit accommodating section (5) positioned between the breathing mask communication end (3) and the breathing tube communication end (4), and an exhaust port (6) is arranged on a passage wall of a passage section of the breathing passage (2) positioned between the ventilation and moisture retention unit accommodating section (5) and the breathing tube communication end (4);

a plurality of different specifications of ventilation and moisture retention units (7), the moisture retention of at least one ventilation and moisture retention unit (7) is different from the moisture retention of one or more other ventilation and moisture retention units (7), any ventilation and moisture retention unit (7) can be arranged in the ventilation and moisture retention unit accommodating section (5), and the ventilation and moisture retention units (7) are used for allowing the breathing gas to pass and can slow down the moisture and heat in the exhaled gas.

2. A ventilating and moisturizing device according to claim 1, wherein the ventilating and moisturizing unit (7) comprises a ventilating and moisturizing core (10), the ventilating and moisturizing core (10) comprises a spacer (12) and a slowing sheet (13), the spacer (12) is arranged to form a ventilating compartment (14), and the slowing sheet (13) is arranged in the ventilating compartment (14) and bends and extends to form a ventilating gap (15).

3. A ventilating and moisturizing device according to claim 2, characterized in that the ventilating and moisturizing unit (7) comprises a unit housing (9), the ventilating and moisturizing core (10) being arranged within a ventilation channel (11) of the unit housing (9).

4. A ventilating and moisturizing device according to claim 3, characterized in that said unit housing (9) comprises a plurality of housings detachably connected, which when connected together are able to form said ventilation channel (11).

5. Ventilation and moisturisation device according to claim 4, wherein each housing is provided with a respective locating formation (71), the locating formation of each housing being adapted to engage with a locating formation of an adjacent housing for mutual attachment and securement.

6. The device of claim 5, wherein the plurality of housings are snap-connectable by a locating structure therebetween.

7. The device according to claim 2, wherein the core (10) has at least two different sizes for different moisture retention and ventilation, the different sizes differing in at least one of radial dimension, axial length, material and arrangement.

8. A ventilating and moisturizing device according to claim 3, characterized in that the size of the ventilation channels (11) is adjustable to fit different sizes of the ventilating and moisturizing core (10).

9. A device according to claim 3, characterised in that it comprises an auxiliary airway (8) for allowing part of the respiratory gases to pass directly through the device housing (1) without being moisturised by the core (10).

10. A ventilating and moisturizing device according to claim 9, characterized in that the ventilating and moisturizing unit (7) comprises a secondary airway (8), the secondary airway (8) allowing part of the breathing gas to be vented directly through the unit housing (9) without moisturizing the ventilating and moisturizing core (10).

11. The device of claim 10, wherein the unit comprises at least one of:

the first method is as follows: the unit shell (9) is provided with the auxiliary air channel (8);

the second method comprises the following steps: the auxiliary air passage (8) is formed on the ventilation and moisture preservation core body (10).

12. The ventilation and moisture retention device according to claim 11, wherein the ventilation and moisture retention unit (7) comprises a mode I, the unit housing (9) comprises an outer cylinder housing (18) and an inner cylinder housing (19) which are sleeved at intervals, the ventilation and moisture retention core (10) is arranged in the interval between the outer cylinder housing (18) and the inner cylinder housing (19), wherein an internal channel of the inner cylinder housing (19) is used as the auxiliary air passage (8);

alternatively, the first and second electrodes may be,

unit casing (9) include outer barrel casing (18) and inner barrel casing (19) that the interval cover was established, ventilation moisturizing core (10) set up in inner barrel casing (19), outer barrel casing (18) with interval between inner barrel casing (19) is as supplementary air flue (8).

13. The apparatus according to claim 3, wherein the unit comprises at least one of:

the first situation is as follows: limiting structures are respectively arranged at two ends of the ventilation channel (11), and the ventilation moisturizing core body (10) is positioned between the limiting structures at the two ends;

case two: the unit housing (9) is provided with a mounting structure for mounting the ventilation and moisture retention unit.

14. The apparatus according to claim 13, wherein the unit comprises at least one of:

the structure I is as follows: when the ventilation and moisture retention unit comprises a first case, the limiting structure comprises a plurality of limiting strips (20) which are uniformly distributed on the wall of the ventilation channel (11) at intervals in the circumferential direction, and the limiting strips (20) extend to the center of the ventilation channel (11) and are connected in a converging manner;

the structure II is as follows: when the ventilation and moisture retention unit comprises the second case, the mounting structure comprises a plurality of circumferentially spaced snap grooves (21) formed on the outer peripheral surface of the unit housing (9), and/or the mounting structure comprises a mounting positioning flange (22) formed on the outer peripheral surface of the unit housing (9).

15. A ventilating and moisturizing device according to any one of claims 3 to 14, characterized in that the unit housing (9) comprises a first housing (23) and a second housing (24) detachably connected in the extending direction of the vent channel (11), wherein,

a first auxiliary air passage section for allowing breathing gas to directly pass through is formed on the first shell (23), a second auxiliary air passage section for allowing breathing gas to directly pass through is formed on the second shell (24), and when the first shell (23) and the second shell (24) are in a connected state, the first auxiliary air passage section and the second auxiliary air passage section are communicated in the extending direction of the ventilation channel (11) to form an auxiliary air passage (8);

alternatively, the first and second electrodes may be,

first casing (23) include first outer section of thick bamboo and the first interior section of thick bamboo that the interval cover was established, second casing (24) include the second outer section of thick bamboo and the second interior section of thick bamboo that the interval cover was established first casing (23) with when second casing (24) were in connected state, first outer section of thick bamboo with the second outer section of thick bamboo is connected in order to form outer shell (18), first interior section of thick bamboo with second inner section of thick bamboo is connected in order to form inner tube casing (19), core (10) of moisturizing of ventilating set up outer shell (18) with in the interval between inner tube casing (19), the inner passage of inner tube casing (19) is as supplementary air flue (8).

16. A ventilating and moisturizing device according to claim 1, characterized in that the channel wall of the channel section comprises an end face wall (25), the vent (6) being formed on the end face wall (25).

17. A ventilating and moisturizing device according to claim 16, characterized in that the end face wall (25) comprises an exhaust gas guiding structure for guiding an axial flow of the exhaust gas exiting the exhaust port (6).

18. A ventilating and moisturizing device according to claim 17, characterized in that the degassing guiding structure comprises axial protrusions (27) provided on the inner and outer mouth edges, respectively, of the degassing opening (6), the axial protrusions (27) forming an axial straight guiding gap (28) therebetween.

19. A ventilating and moisturizing device according to claim 16, characterized in that the internal dimensions of the air vents (6) are gradually enlarged along the direction of air venting, and/or in that the air vents (6) are arranged obliquely.

20. A ventilating and moisturizing device according to any of claims 16 to 19, characterized in that said vents (6) comprise at least one of the following structures:

the structure I is as follows: the exhaust port (6) comprises a plurality of exhaust round holes which are circumferentially arranged at intervals;

the structure II is as follows: the exhaust port (6) comprises a plurality of circumferentially spaced and circumferentially extending exhaust slits;

the structure is three: the exhaust port (6) comprises a plurality of groups of exhaust slits arranged at intervals in the radial direction, and each group of exhaust slits comprises a plurality of exhaust slits arranged at intervals in the circumferential direction and extending in the circumferential direction.

21. The ventilation and moisture retention device according to claim 16, wherein the end face wall (25) is formed with a circumferentially extending vent gap (29), a vent insert (30) inserted into the vent gap (29) is provided in the passage section, and a vent gap is formed between an outer circumferential surface of the vent insert (30) and an inner circumferential surface of the vent gap (29) as the vent port (6).

22. Ventilating and moisturizing device according to claim 21, characterized in that said venting slits are formed respectively along opposite sides of the radial direction of the venting insert (30), said venting slits of both sides being arranged obliquely towards each other, wherein,

the outer edge of the outer side end face (31) of the exhaust insert (30) and the outer side opening edge of the exhaust notch (29) are respectively provided with an outer axial bulge (27), and an axial straight guide gap (28) is formed between the outer axial bulges (27);

the inner side edge of the outer side end face (31) of the exhaust insert (30) and the inner side opening edge of the exhaust notch (29) are respectively provided with an inner side axial bulge (27), and an axial straight guide gap (28) is formed between the inner side axial bulges (27).

23. The apparatus of claim 1, wherein the channel segment comprises at least one of:

the structure I is as follows: the outer side surface of the channel wall of the channel section is provided with connecting clamping grooves (32) and positioning clamping blocks (33) which are alternately arranged at intervals in the circumferential direction;

the structure II is as follows: a plurality of axial grooves (34) which are uniformly distributed at intervals in the circumferential direction are formed on the outer side surface of the channel wall of the channel section;

the structure is three: the channel segments have channel walls formed on their outer side surfaces with circumferentially extending annular connecting grooves (35).

24. The device according to claim 1, wherein the device housing includes a ventilation and noise reduction unit (36) provided at the exhaust port (6) for allowing exhaust and capable of reducing exhaust noise.

25. A ventilating and moisturizing device according to claim 24, wherein the ventilating and noise reducing unit (36) comprises a ventilating and noise reducing core (37) and an outer cover (38), wherein the outer cover (38) is formed with a ventilating opening (39), the outer cover (38) is connected to the passage section, the ventilating and noise reducing core (37) is positioned between the outer cover (38) and the passage section, and the air outlet (6) is communicated through the ventilating and noise reducing core (37) and the ventilating opening (39).

26. A ventilating and moisturizing device according to claim 25, wherein the outer cover (38) comprises an outer ring body (40) and an inner ring body (41), the inner ring body (41) being disposed within the outer ring body (40) and maintaining an annular spacing, the outer ring body (40) being connected to the inner ring body (41) by a plurality of circumferentially spaced connecting strips (42) disposed within the annular spacing, wherein the plurality of connecting strips (42) divide the annular spacing into the ventilation openings (39);

wherein the housing (38) comprises at least one of:

the structure I is as follows: a plurality of axial protrusions (27) which are circumferentially distributed at intervals are formed on the inner circumferential surface of the inner ring body (41), and the plurality of axial protrusions (27) are used for being matched with a plurality of axial grooves (34) which are circumferentially distributed at intervals and formed on the outer side surface of the channel wall of the channel section;

the structure II is as follows: the inner circumferential surface of the outer ring body (40) is provided with connecting clamping blocks (43) and positioning clamping grooves (44) which are alternately arranged in the circumferential direction, wherein inlets of the positioning clamping grooves (44) respectively extend to two circumferential sides in an expanding manner, and the connecting clamping blocks (43) and the positioning clamping grooves (44) are respectively matched with the connecting clamping grooves (32) and the positioning clamping blocks (33) which are alternately arranged in the circumferential direction and are formed on the outer side surface of the channel wall of the channel section;

the structure is three: a plurality of circumferentially spaced connecting buckles (45) are formed on the inner circumferential surface of the outer ring body (40), and the connecting buckles (45) are used for clamping with circumferentially extending annular connecting grooves (35) formed on the outer side surface of the channel wall of the channel section.

27. The device of claim 1, wherein the housing comprises a connecting sleeve (46), wherein the connecting sleeve (46) is sleeved on the breathing tube communicating end (4).

28. The ventilation and moisture retention device according to claim 27, wherein a radial through opening (47) axially extending from the front end surface is formed on the channel wall of the breathing tube communication end (4), the channel wall comprises a thin-wall section (48) axially extending from the front end surface and having a reduced wall thickness, and a circumferential protrusion (49) is formed on the outer circumferential surface of the thin-wall section (48), so that a circumferential clamping groove (60) is formed between the circumferential protrusion (49) and the thick-wall section (50) of the channel wall;

circumferential buckles (61) and positioning blocks (62) which are circumferentially arranged at intervals are formed on the inner circumferential surface of the connecting sleeve (46);

the positioning block (62) can be matched in the radial through hole (47), and the circumferential buckle (61) is clamped in the circumferential clamping groove (60).

29. Ventilating and moisturizing device according to claim 1, characterized in that the ventilating and moisturizing device housing (1) comprises a first cylinder (63) and a second cylinder (64), wherein,

one end of the first cylinder (63) and one end of the second cylinder (64) are detachably connected;

the internal passage of the first cylinder (63) and the internal passage of the second cylinder (64) form the breathing passage (2);

the other end of the first barrel body (63) is a breathing mask communication end (3), and the other end of the second barrel body (64) is a breathing tube communication end (4).

30. A ventilating and moisturizing device according to claim 29, wherein the inner circumferential surface of the inner channel of the first cylinder (63) is formed with a plurality of circumferentially spaced axial ribs (65), and the axial ribs (65) are formed with inclined guide surfaces (66);

and/or the presence of a gas in the gas,

first barrel (63) are including toper section of thick bamboo (72), the tip of toper section of thick bamboo with respirator link (3) are connected, the tip of toper section of thick bamboo with the unit of moisturizing of ventilating holds section (5) and connects, the tip of toper section of thick bamboo with the unit of moisturizing of ventilating holds the junction of section (5) and is formed with and is used for carrying out spacing backstop step (73) to the unit of moisturizing of ventilating that holds in the unit of moisturizing of ventilating holds section (5).

31. A device according to claim 29, wherein a stopper rib (59) for restricting the ventilating and moisturizing unit accommodated in the ventilating and moisturizing unit accommodating section (5) is formed in the second cylinder (64).

32. The breathing mask is characterized by comprising a ventilation and moisture retention unit and a mask body with a breathing cavity, wherein an exhaust passage is formed on the wall of the breathing cavity, the ventilation and moisture retention unit is arranged in the exhaust passage, and the ventilation and moisture retention unit is used for allowing exhaled air to pass through so as to be exhausted and can slow down the passing of moisture and heat in the exhaled air.

33. A respiratory mask assembly comprising a respiratory mask and a ventilation and moisture retention device (68) according to any one of claims 1 to 31, wherein the respiratory mask comprises a mask body (67) having a respiratory cavity, and the respiratory mask communication end (3) is in communication with the respiratory cavity.

34. The respiratory mask assembly according to claim 33, wherein the respiratory mask assembly includes at least one of:

the first method is as follows: the ventilation and moisture retention device (68) is used as a connecting pipe (69) connected to the mask body (67);

the second method comprises the following steps: the breathing mask communication end (3) is connected with the mask body (67) through a flexible pipe section (70);

the third method comprises the following steps: the mask body (67) is connected with a connecting pipe (69) communicated with the breathing cavity, and the breathing mask communication end (3) is connected with the connecting pipe (69);

the method is as follows: be connected with on face guard body (67) with connecting pipe (69) of breathing chamber intercommunication, breathing face guard intercommunication end (3) through flexible pipe section (70) with connecting pipe (69) are connected.

35. A respiratory support apparatus comprising a ventilator, a breathing tube, and the respiratory mask of claim 32, wherein the ventilator and the respiratory mask are in communication through the breathing tube;

alternatively, the first and second electrodes may be,

the breathing support device comprises a ventilator, a breathing tube and a respiratory mask assembly according to claim 33 or 34, wherein the ventilator and the breathing tube communication end (4) are in communication through the breathing tube.