CN105682750A - Fresh air port mechanism for facepiece used on self-contained open-circuit compressed air breathing apparatus - Google Patents
Fresh air port mechanism for facepiece used on self-contained open-circuit compressed air breathing apparatus Download PDFInfo
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- CN105682750A CN105682750A CN201380080550.2A CN201380080550A CN105682750A CN 105682750 A CN105682750 A CN 105682750A CN 201380080550 A CN201380080550 A CN 201380080550A CN 105682750 A CN105682750 A CN 105682750A
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- mask
- assembly
- demand valves
- cam ring
- cam
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/02—Masks
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
- A62B18/10—Valves
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B7/00—Respiratory apparatus
- A62B7/02—Respiratory apparatus with compressed oxygen or air
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
- A62B9/02—Valves
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- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Life Sciences & Earth Sciences (AREA)
- Zoology (AREA)
- Emergency Medicine (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
Embodiments relate generally to methods, systems, and devices for opening and closing one or more ports (1402) to allow a wearer of a self-contained breathing apparatus (SCBA) (100) to breathe ambient air. Incorporation of a fresh-air port assembly (300) into the mask (102) of an SCBA (100) may enable the user to breathe ambient air when purified air is not required, and may allow a user to quickly switch to purified air when necessary. A fresh-air port assembly (300) positioned between the demand valve (104) and mask (102) of an SCBA (100) may be operable to disconnect and/or disable the demand valve (104) to allow ambient air into the mask (102), as well as to control the exhalation valve (202) of the mask (102) so that a user may easily breathe ambient air.
Description
The cross reference of related application
Nothing.
About the research of federal funding or the statement of research and development
It is not suitable for.
Quoting of micro-contracting film
It is not suitable for.
Background technology
Typically, self contained breathing apparatus (or SCBA) can control from one or more cylinder to the air flow in mask the breathing for user by user demand valve. Demand valves is by the pressure-controlling of the breathing from user, thus allows air flow when user sucks and stop air flow when user breathes out. Such as, in some cases, it may also be useful to person may wish the breathing environment air when possibility, when user is in Accreditation Waiting Area or has left dangerous environment, to retain the air being stored in the cylinder of SCBA. But, it is possible to the mask or the so spent time that are difficult to demand valves be disconnected or remove SCBA are long. The applicant has found to use middle device to can be user and provides and disconnect demand valves temporarily and/or make the idle ability of demand valves, still wears mask simultaneously. The applicant has developed fresh air jaws equipment, and described fresh air jaws equipment operationally allows user to replace between demand valves and ambient air.
Summary of the invention
Aspect of the present disclosure can comprise the embodiment of self contained breathing apparatus, and described self contained breathing apparatus comprises: one or more air cylinder; Pressure reducer; There is the mask of outlet valve; The demand valves that can be attached to mask, wherein user is sucked air by demand valves and is breathed out by air by outlet valve; Flexible pipe is pressed, wherein pressure reducer and demand valves fluid communication in from pressure reducer to demand valves; The tensimeter of combination and alarm hooter; With the fresh air mouth assembly being connected to demand valves so that fresh air mouth assembly is positioned between demand valves and mask, wherein fresh air mouth component operable ground rotates and opens and closes the one or more mouths leading to ambient air. In certain embodiments, fresh air mouth assembly comprises: for holding the cam knob of one or more drive ball; Comprise the cam ring in order to receive and to guide at least one path of drive ball; For fresh air mouth assembly being attached to the adapter of mask; And the spring left for cam ring is biased from adapter being positioned between cam ring and adapter. In certain embodiments, cam knob comprises the first protuberance, and described first protuberance is used for interacting with outlet valve to keep outlet valve to open when one or more mouth is opened to ambient air. In certain embodiments, cam knob comprises the 2nd protuberance, and described 2nd protuberance is used for the position that the user to equipment indicates cam assembly, and when wherein very moment is opened to ambient air, the 2nd protuberance is in the sight line of user. In certain embodiments, at least one path of cam ring comprises: for providing the first part of Perceived control resistance when initialize rotating operation; For the second section by cam ring movement in the translational motion in face being perpendicular to mask; For cam ring being locked in the Part III of open position; With the Part IV of the assembling for allowing cam assembly. In certain embodiments, fresh air mouth assembly comprises the front Abdeckteil being attached to cam ring further. In certain embodiments, demand valves is attached to fresh air mouth assembly by demand valves adapter. In certain embodiments, equipment can comprise mask Abdeckteil assembly further, described mask Abdeckteil assembly for cover mask at least partially and outlet valve.
An aspect of the present invention can comprise and the rotary components comprising mask and using together with the respiratory organ of demand valves, and described assembly comprises: one or more drive ball;For holding the cam knob of one or more drive ball; The cam ring being connected to cam knob, described cam ring comprises at least one path on its outer surface to receive drive ball; For cam assembly being attached to the adapter of the mask of respiratory organ; And the spring for cam ring is offseted away from adapter being positioned between cam ring and adapter, wherein: rotary components is connected to mask, assembly is positioned between demand valves and mask, and one or more mouths that rotary components leads to ambient air for opening and closing. In certain embodiments, cam knob comprises for interacting the first protuberance to keep outlet valve to open with outlet valve. In certain embodiments, cam knob comprises the 2nd protuberance of the position for indicating cam assembly to equipment user, and wherein when mouth is opened to ambient air, the 2nd protuberance is in the sight line of user. In certain embodiments, cam knob is be perpendicular to the face straight line of mask relative to mask rotation and cam ring mobile. In certain embodiments, at least one path of cam ring comprises: for providing the first part of Perceived control resistance when initialize rotating operation; For the second section by cam ring movement in the translational motion in face being perpendicular to mask; For cam ring being locked in the Part III of open position; With the Part IV of the assembling for allowing cam assembly. In certain embodiments, cam ring comprises the path of two couplings. In certain embodiments, assembly can comprise the front Abdeckteil being attached to cam ring with screw further. In certain embodiments, the push rod of adapter and demand valves interacts to activate demand valves or to make demand valves not work. In certain embodiments, the mouth leading to ambient air is opened between demand valves and adapter, and demand valves maintenance is connected to rotary components.
Other aspect of the present disclosure can comprise the method that the self contained breathing apparatus with mask and demand valves upgrades or upgrades, and described method comprises: provides fresh air mouth assembly; Fresh air mouth assembly is attached to mask; With demand valves is attached to fresh air mouth assembly. In certain embodiments, fresh air mouth assembly is attached to mask to comprise: by the adapter of assembly by being threadedly attached to mask. In certain embodiments, demand valves is attached to fresh air mouth assembly and comprises the cam ring that demand valves is attached to assembly.
These and other features will more clearly be understood from following detailed description with claim by reference to the accompanying drawings.
Accompanying drawing explanation
For more completely understanding the disclosure, describing by reference to the accompanying drawings and in detail now and describe with reference to concise and to the point as follows, wherein similar drawing reference numeral indicates similar part.
Fig. 1 is the diagram of the exemplary embodiments of self contained breathing apparatus system;
Fig. 2 A to Fig. 2 B illustrates the typical embodiment of demand valves;
Fig. 3 A to Fig. 3 B illustrates the exemplary embodiments of the fresh air mouth assembly of the mask being connected to self contained breathing apparatus and demand valves;
Fig. 4 is the decomposition view of the exemplary embodiments of fresh air mouth assembly;
Fig. 5 A to Fig. 5 D illustrates the detailed view of the embodiment of cam ring;
Fig. 6 illustrates the embodiment of the path of cam ring;
Fig. 7 A to Fig. 7 E illustrates the detailed view of the embodiment of cam knob;
Fig. 8 A to Fig. 8 D illustrates the detailed view of the embodiment of demand valves adapter;
Fig. 9 A to Fig. 9 B illustrates the detailed view of the embodiment of the front Abdeckteil comprising screw;
Figure 10 A to Figure 10 C illustrates the detailed view of the embodiment of exhalation valve assembly;
Figure 11 A to Figure 11 D illustrates the detailed view of the embodiment of mask Abdeckteil assembly;
Figure 12 A to Figure 12 D illustrates the detailed view of the embodiment of demand valves;
Figure 13 A to Figure 13 B illustrates the exemplary embodiments of the fresh air mouth assembly when fresh air mouth is closed;
Figure 14 A to Figure 14 B illustrates the exemplary embodiments of the fresh air mouth assembly when fresh air mouth is opened; With
Figure 15 A to Figure 15 B illustrates the exemplary embodiments of the fresh air mouth assembly when fresh air mouth is opened.
Embodiment
Although iting should be understood that and set forth the illustrated enforcement of one or more embodiment when starting hereinafter, but disclosed system and method can using many technology implementations, and no matter described technology is currently known or not yet exist. The disclosure should limit never in any form in following illustrated enforcement, accompanying drawing and technology, but can amendment in the full breadth of subsidiary claim and Equivalent thereof.
Generally, the applicant has found to be merged in the mask of self contained breathing apparatus (SCBA) by fresh air mouth assembly and can be conducive to enable user's breathing environment air when not requiring the air of purification. Such as, it may also be useful to person may be in Accreditation Waiting Area and may wish the air retaining in the cylinder of SCBA, and therefore user may wish to be switched to ambient air temporarily. The fresh air mouth assembly being positioned between the demand valves of SCBA and mask can operate for by demand valves disconnect and/or make it not work, to allow ambient air to enter in mask, and the outlet valve of control mask so that user can easy breathing environment air. This can also allow user to be switched to rapidly the air of purification when needed. Fresh air mouth assembly can comprise: operationally cam knob for rotating relative to mask, operationally for being perpendicular to the cam ring of the face rectilinear movement of mask, with operationally for assembly is attached to the demand valves adapter of mask and/or demand valves.
Fig. 1 illustrates SCBA system 100, described system 100 comprises mask 102, it is operably connected to the demand valves 104 of mask 102, one or more air cylinder 110, also second stage pressure reducer can be known as by demand valves 104() the middle pressure flexible pipe 106 of the fluid communication that provides air cylinder (multiple air cylinder) between 110 and mask 102, and for lowering the pressure of the air from cylinder 110 thus provide the pressure reducer 124 of the fluid communication between air cylinder 110 and middle pressure flexible pipe 106. In certain embodiments, cylinder 110 can comprise the high-pressure air being in such as roughly 4500psi. High-pressure air from cylinder 110 can be such as reduced to by pressure reducer 124 roughly presses air in 100psi. In certain embodiments, demand valves 104 may be used for before delivering air to mask 102, and middle pressure air is reduced to roughly barometric point.
In addition, SCBA system 100 can comprise band, and described band comprises shoulder belt 108, waistband 112 and/or cylinder band 122. In certain embodiments, SCBA also can comprise tensimeter 118 and siren 119, and wherein tensimeter 118 and siren 119 can with air cylinder (multiple air cylinder) 110 by high pressure hose 120 fluid communication. In certain embodiments, high pressure hose 120 is connected to cylinder 110 by pressure reducer 124. Such as, in certain embodiments, pressure reducer 124 can comprise the high-pressure passage for high pressure hose 120, so that high-pressure air to be provided to high pressure gauge 118, in the first of middle pressure flexible pipe 106, press path, and in the 2nd, press path (so that middle pressure air is provided to siren).Therefore, the pressure reducer 124 of Fig. 1 may be used for the high-pressure air of air cylinder (multiple air cylinder) 110 is reduced to middle pressure air, and high-pressure air is delivered to tensimeter 118 by (by the connection of suitable flexible pipe), middle pressure is delivered to demand valves 104, and by middle pressure transfer of air to siren 119. Typically, high pressure hose 120 comprises high-pressure passage and middle pressure path, and is connected to pressure reducer 124 and makes high-pressure air and middle pressure air can be passed to high pressure gauge 118 and the siren 119 of combination. In FIG, pressure reducer 124 has an only high-pressure passage/mouth (attachment for high pressure hose 120). In certain embodiments, tensimeter 118 and siren 119 may be used for the pressure of the air monitored in cylinder 110, and if pressure be reduced to below the limit that is default or that limit, warn the user of SCBA.
Turning now to Fig. 2 A to Fig. 2 B, there is shown the typical embodiment of mask 102 and demand valves 104. Mask 102 can comprise outlet valve 202. Demand valves 104 may be used for the air flow 206 controlled in mask 102, and its air can therefrom press flexible pipe 106 be flowed in mask by demand valves 104 and flow out mask by outlet valve 202. In fig. 2, it may also be useful to person can suck, thus cause demand valves 104 open and allow the air flow 206 entering mask 102. In fig. 2b, it may also be useful to person can breathe out, thus cause demand valves 104 to be closed and outlet valve 202 is opened, and allow the air flow 206 leaving mask 102. In certain embodiments, demand valves 104 and outlet valve 202 are by spring control. In embodiment shown in Fig. 2 A to Fig. 2 B, demand valves 104 is attached to by screw thread 208 and is attached in demand valves 104 on mask 102 and by screw thread 210. In certain embodiments, demand valves 104 can press flexible pipe 106 in junctor 204 place is connected to.
Turning now to Fig. 3 A to Fig. 3 B, there is shown the typical embodiment of mask 102 and demand valves 104, wherein assembly comprises the fresh air mouth assembly 300 being connected to mask 102 and demand valves 104 further. In certain embodiments, fresh air mouth assembly 300 can be positioned between mask 102 and demand valves 104. Fresh air mouth may be used for being rotated up by the side shown in arrow 302, and wherein Fig. 3 A illustrates the fresh air mouth assembly 300 being in first location, and Fig. 3 B illustrates the fresh air mouth assembly 300 being in the second position. In certain embodiments, fresh air mouth assembly 300 can be considered in first location " closedown " and the second position " opening ". As further described at this, the opening and closing position of fresh air mouth assembly 300 can control the joint of the one or more air passagewayss by assembly 300, and wherein air passageways can provide air from the cylinder 110 of SCBA and/or ambient air.
Turning now to Fig. 4, there is shown the decomposition view of fresh air mouth assembly 300, mask 102 and demand valves 104. Although assembly 300 can comprise concrete parts described herein in certain embodiments, but different parts also can be used for realizing similar functional. Fresh air mouth assembly 300 can comprise cam ring 402, cam knob 404, drive ball 405, loading spring 410, demand valves adapter 412 and front Abdeckteil 414. In certain embodiments, cam ring 402 can comprise the path 406 for receiving drive ball 405. Cam knob 404 may be used for being assemblied on cam ring 402, and wherein cam knob 404 can comprise the recess 407 for keeping drive ball 405.In certain embodiments, demand valves adapter 412 may be used for being assembled by cam ring 402 and cam knob 404. In certain embodiments, demand valves adapter 412 may be used for being attached to mask 102, and wherein demand valves adapter 412 can comprise the screw thread 411 for coordinating with the screw thread 208 of mask 102. In certain embodiments, assembly 300 can comprise loading spring 410, and described loading spring 410 can be assemblied between cam ring 402 and demand valves adapter 412, and wherein cam ring 402 can be left by loading spring 410 from demand valves adapter 412 is biased. In certain embodiments, front Abdeckteil 414 can use screw 416 be attached to cam ring 402 and may be used for keeping putting in place by demand valves adapter 412 and spring 410.
In certain embodiments, mask 102 can be attached to mask Abdeckteil assembly 430, and described mask Abdeckteil assembly 430 can comprise outlet valve Abdeckteil 432 and mouth mouth Abdeckteil 434. In addition, outlet valve 202 can be connected to retaining clip 436. In certain embodiments, demand valves 104 may be used for being attached to demand valves adapter 412.
Turning now to Fig. 5 A to Fig. 5 D, cam ring 402 is shown in detail. Cam ring can comprise at least one path 406, and wherein embodiment shown in Fig. 5 A to Fig. 5 D comprises two paths 406. In certain embodiments, cam ring 402 can comprise around the circumference of cam ring 402 and the lip 502 for contacting loading spring 410 that to be projected in cam ring 402 intracardiac. In addition, cam ring 402 can comprise one or more opening 504, and described opening 504 is for receiving screw 416 and front Abdeckteil 414 leans on cam ring 402 keep putting in place. In certain embodiments, path 406 can be positioned on the outside surface of cam ring 402, and described path can be positioned on the phase offside of cam ring 406. In certain embodiments, path 406 can mate. In other embodiments, cam ring 402 can comprise the path 406 of any quantity, but wherein path 406 each for receive and guide drive ball 405.
Turning now to Fig. 6, the outside surface of cam ring 402 is depicted as the rectangle comprising two paths 406. Fig. 6 is the particular view of the outside surface of cam ring 402, and described outside surface has been cut out and has flattened so that be connected on the left of a distant place for shown rectangle He on the right side of a distant place. Path 406 can comprise four parts, i.e. first part 601, second section 602, Part III 603 and Part IV 604. In certain embodiments, when drive ball 405 is in the first part 601 of path, fresh air mouth assembly can be considered to close. The profile design of first part 601 controls on one's own initiative for needs user and rotates cam knob 404. When drive ball 405 is in the second section 602 of path 406, it may also be useful to person can open fresh air mouth assembly 300. In certain embodiments, second section 602 can be angled, if when making user's release or unclamp its grasping on assembly 300 and be in second section 602 in drive ball 405, assembly 300 can be loaded that spring 410 is biased closes, or biased returns to first part 601. Cam knob 404 must specially be rotated to open in second section 602 to Part III 603 by user, and specially must rotate back in Part III 603 to second section 602 cam knob 404 to close. When drive ball 405 is in Part III 603, assembly 300 may be locked in open position, or opens by loading spring 410 is biased.In certain embodiments, Part III 603 can be angled, if so that user's release or when unclamping its grasping on assembly 300 and drive ball 405 is in second section 602 simultaneously, if or when assembly 300 is knocked or moves, assembly 300 is biased to open or be biased by loading spring 410 and returns to Part III 603. Part IV 604 can only use when assembling fresh air mouth assembly 300. In certain embodiments, first part may be used for Perceived control resistance when being provided in initialize rotating operation; Second section may be used for moving cam ring in the translational motion in face being perpendicular to mask; Part III may be used for cam ring is locked in open position; And Part IV may be used for allowing the assembling of cam assembly.
Turning now to Fig. 7 A to Fig. 7 E, figure shows in detail cam knob 404. Cam knob 404 can be included the recess 702 on surface to receive drive ball 405. If drive ball 405 can interact with the path 406 of cam ring 402 and cam knob 404 rotates in the clockwise or counterclockwise direction, then can follow path 406. In addition, cam knob 404 can comprise telltale 704, as long as wherein when assembly 300 forwards the 2nd (or opening) position to, then telltale 704 can align with the sight line of user. Such as, this can allow user noticed that fresh air mouth assembly is opened before entering into dangerous environment or close. Telltale 704 also can be considered as the protuberance from cam knob 404. In certain embodiments, telltale 704 can comprise color, particularly bright or eye-catching color. In certain embodiments, such as, telltale 704 can comprise other instruction, such as lamp. Cam knob 404 also can comprise the protuberance 706 engaged at least partially that can be used to outlet valve 202, and wherein when cam knob is in the 2nd (opening) position, outlet valve 202 stays open by protuberance 705. In certain embodiments, protuberance 706 can be opened from the sides tapered of cam knob 404 so that protuberance 706 engages slidably with outlet valve 202. In certain embodiments, protuberance 706 and telltale 704 can align on the phase offside of cam knob 404 so that when telltale 204 is in the sight line of user, protuberance 706 is keeping outlet valve 202 to open. Cam knob 404 also can comprise lip 710, the circumference of this lip 710 around cam knob 404 and the center to cam knob 404 outstanding and be projected into described in the heart, for contacting cam ring 402. In addition, cam knob 404 can comprise spine 708 on the outer surface, and wherein spine 708 can allow to grasp with the rotation of auxiliary cam knob 404.
Turning now to Fig. 8 A to Fig. 8 D, figure shows in detail demand valves adapter 412. Demand valves adapter 412 can comprise the screw thread 411 for demand valves 412 is connected to mask 102. In certain embodiments, demand valves adapter 412 can comprise the first sealing-ring 820, and wherein sealing-ring 802 may be used for abutting against the part sealing of demand valves 404. Sealing-ring 802 may be used for forming gas-tight seal between demand valves 104 and demand valves adapter 412. In certain embodiments, demand valves adapter 412 can comprise the 2nd sealing-ring 804, and described 2nd sealing-ring 804 is for by the sealing at least partially of mask 102. 2nd sealing-ring 804 may be used for the gas-tight seal formed between mask 102 and demand valves adapter 412.
Turning now to Fig. 9 A to Fig. 9 B, figure shows in detail the first Abdeckteil 414. First Abdeckteil 414 can comprise the opening 902 for receiving screw 416. Front Abdeckteil 414 can be attached to cam ring 402 by screw 416. In certain embodiments, front Abdeckteil 414 can comprise multiple opening 902 and screw 416, and wherein in embodiment shown in Fig. 9 A to Fig. 9 B, front Abdeckteil 414 can comprise six openings 902 around the circumference equi-spaced apart of front Abdeckteil 414.
Turning now to Figure 10 A to Figure 10 C, figure illustrate in detail outlet valve 202. Outlet valve 202 can be connected to retaining clip 436, and wherein retaining clip 436 can be attached to one or more bar 1006. In certain embodiments, outlet valve 202 can comprise film 1004, and described film 1004 is for abutting against closing at least partially of mask 102 by outlet valve 202. In certain embodiments, bar 1006 can be attached to pin 1010. In addition, bar 1006 can be connected to film 1004 so that if bar 1006 moves, film 1004 also moves. In certain embodiments, outlet valve 202 can comprise the spring 1002 for being partially pressed against on mask 102 by film 1004. In other words, spring 1002 may be used for being biased and close outlet valve 202. In certain embodiments, retaining clip 436 and/or bar 1006 may be used for the protuberance 706 with cam knob 404 and interact. In certain embodiments, the protuberance 706 of cam knob 404 may be used for retaining clip 436 being moved in a lateral direction and therefore being moved by bar 1006. In other words, when cam knob 404 is in the 2nd (opening) position, protuberance 706 can keep outlet valve 202 to open so that if fresh air mouth assembly 300 is opened, then outlet valve 202 is also kept open. In embodiment shown in fig. 1 ob, film 1004 can be in first location, is namely remained by spring 1002 and leans on mask 102, and outlet valve 202 can be considered to cut out. In embodiment shown in Figure 10 A, film 1004 can be in the second position, is namely kept folder 436 and/or bar 1006 pulls open from mask 102, and outlet valve 202 can be considered to open. In certain embodiments, film 1004 can miles of relative movement 1008 between the first position and the second position.
Turning now to Figure 11 A to Figure 11 D, figure shows in detail mask Abdeckteil assembly 430. In certain embodiments, mask Abdeckteil assembly 430 can comprise outlet valve Abdeckteil 432 and mouth mouth Abdeckteil 434. In certain embodiments, mouth mouth Abdeckteil 434 can be assemblied in going up at least partially of mask 102. Mouth mouth Abdeckteil 434 can comprise ventage 1102, and to allow, air flows from outlet valve 202. In certain embodiments, outlet valve Abdeckteil 432 can cover outlet valve 202 at least partially. In certain embodiments, outlet valve Abdeckteil 432 reliable mouth mouth Abdeckteil 434 coordinate or fasten to mouth mouth Abdeckteil 434. In certain embodiments, the bar 1006 of outlet valve 202 assembles by the ventilating part 1102 of mouth mouth Abdeckteil 434, and the retaining clip 436 being wherein connected to bar 1006 can be positioned on the outside of mouth mouth Abdeckteil 434, and outlet valve 202 can be covered by mouth mouth Abdeckteil 434 simultaneously. In certain embodiments, retaining clip 436 can be covered by outlet valve Abdeckteil 432.
Turning now to Figure 12 A to Figure 12 D, figure illustrate in details demand valves 104. Demand valves 104 can comprise push rod 1202, and wherein push rod 1202 can be the triggering device for open and/or closed demand valves 104.Such as, when push rod 1202 is pressed, as shown in fig. 12d, demand valves 104 can be activated or open, such as, when being attached to mask 102 and/or demand valves adapter 412 when demand valves 104. In addition, when push rod 1202 stretches out, as shown in fig. 12 c, demand valves 104 can be made not work or close, such as, when demand valves 104 is removed from mask 102 and/or demand valves adapter 412. In certain embodiments, push rod 1202 can be spring loaded so that push rod 1202 is biased to the position stretched out, as shown in fig. 12 c. In certain embodiments, demand valves 104 can comprise part 1204, and wherein the part 1204 of demand valves 104 may be used for sealing with demand valves adapter 412.
Turning now to Figure 13 A to Figure 13 B, fresh air mouth assembly 300 that is that there is shown assembling and that be connected to demand valves 104 and mask 102, wherein assembly 300 can be positioned between demand valves 104 and mask 102. In embodiment shown in Figure 13 A to Figure 13 B, assembly 300 can be in first (or closedown) position. In the first part 601 of the path 406 that drive ball 405 can be on cam ring 402. When leaning on the sealing-ring 802 being positioned at demand valves adapter 412 to be located in demand valves 104, assembly 300 can be considered to be closed. As shown in figure 5b, reliable at least partially the demand valves adapter 412 of demand valves 104 is located, and wherein sealing-ring 802 can contact with the part 1204 of demand valves 104. In embodiment shown in Fig. 5 A to Fig. 5 B, when user sucks, air flow 206 can flow through demand valves 104, flows through demand valves adapter 412 and is flowed in mask 102, is then flowed out (being similar to Fig. 2 A to Fig. 2 B) by outlet valve 202 when user breathes out. As, in the embodiment as shown in Figure 13 A to Figure 13 B, demand valves 104 can be activated, wherein push rod 1202 can be pressed by demand valves adapter 412.
Turning now to Figure 14 A to Figure 14 B, there is shown fresh air mouth assembly 330, wherein drive ball 405 can be in the second section 602 of path 406. Cam knob 404 is rotatable, thus drive ball (or multiple drive ball) 405 is moved in second section 602. As shown in Figure 14 B, cam ring 402 is backup loading spring 410 by the movement of drive ball (multiple drive ball) 405, thus by demand valves 104 to extrapolation (or pushing open from mask 102). Sealing between this releasably sealable circle 802 and part 1204 of demand valves 104. In certain embodiments, part 1402 can be opened between the part 1204 of demand valves 104 and demand valves adapter 412. In addition, when demand valves 104 is open from mask 102 (and when being therefore open from demand valves adapter 412), push rod 1202 can start to extend, thus demand valves 104 is not worked. In addition, when cam knob 404 is rotated, retaining clip 436 can outwards be moved or remove from mask 102 by protuberance 706, thus causes outlet valve 202 to be opened. In certain embodiments, the position of fresh air mouth assembly 300 shown in Figure 14 A to Figure 14 B can be considered to be in the transitory stage closed and open between assembly 300. In this transitory stage, if user stops rotating cam knob 404, then loading spring 410 can operate cam ring 402 and drive ball (multiple drive ball) 405 are back into first (closedown) position. This can be used as safety mechanism, to prevent the accident of fresh air mouth 1402 is opened, because this may be dangerous in contaminate environment.
Turning now to Figure 15 A to Figure 15 B, fresh air mouth assembly 300 is depicted as in an open position. Cam knob 404 can be rotated further, thus causes drive ball (or multiple drive ball) 405 to enter the Part III 603 of the path on cam ring 402 (or multiple path) 406. As, as shown in Figure 15 B, cam ring 402 can be pushed against on loading spring 410 further, thus by demand valves 104 to extrapolation (or pushing open from mask 102). When demand valves 104 is open from demand valves adapter 412, mouth 1402 can be opened further. In certain embodiments, mouth 1402 can extend around the circumference of demand valves adapter 412, and wherein a part for circumference can be stopped by push rod 1202. In other words, the space caused between the part 1204 and demand valves adapter 412 of demand valves 104 can extend around the circumference of part 1204 and demand valves adapter 412. In addition, demand valves 104 can comprise mouth or space 1504, to allow air to flow through demand valves 104 at least partially. In certain embodiments, outlet valve 202 also can be stayed open by the protuberance 706 interacted with retaining clip 436. In an illustrated embodiment, air flow 206 can flow through around the mouth 1402 of demand valves adapter 412 and flows through outlet valve 202. In certain embodiments, the direction of air flow is pointed to by fresh air mouth assembly 300 and is referred to from mask in mask and by outlet valve 202. As, as shown in Figure 15 A to Figure 15 B, the push rod 1202 of demand valves 104 can extend, thus demand valves 104 is not worked.
Embodiments more of the present disclosure can comprise the method using above-described fresh air mouth assembly 300. In certain embodiments, it may also be useful to person may wish to make demand valves 104 not work and breathing environment air still wears mask 102, the such as mask 102 on SCBA100 simultaneously. Method can comprise: from first location, the cam knob 404 of fresh air mouth assembly 300 is turned to the second position, thus cause demand valves 104 do not work and open the one or more mouths 1402 by fresh air mouth assembly 300, thus ambient air is allowed to enter in mask 102. In certain embodiments, rotate cam knob 404 and also the outlet valve 202 of mask 102 can be opened, allow user breathe out mask 102 and without the pressure gradient opened outlet valve 202 and typically require. Method can comprise further and in the opposite direction from the second position, cam knob 404 rotated to first location, thus causes demand valves 104 be activated and close the one or more mouths 1402 by fresh air mouth assembly 300. In certain embodiments, cam knob 404 being rotated back into first location and can discharge outlet valve 202, wherein then outlet valve 202 can operate based on the pressure in the mask 102 of the breathing from user.
Other embodiments of the present disclosure can comprise the method that fresh air mouth assembly 300 is retrofitted to SCBA100. Method can comprise: demand valves 104 is removed from the mask 102 of SCBA100, and fresh air mouth assembly 300 is attached to mask 102, and demand valves 104 is attached to fresh air mouth assembly 300. In certain embodiments, fresh air mouth assembly 300 is attached to mask 102 by demand valves adapter 412. In certain embodiments, fresh air mouth assembly 300 is attached to demand valves by cam ring 402 and/or the front Abdeckteil 414 of fresh air mouth assembly 300.
Above the discussed example accompanying drawings providing the multiple typical device, system and the techniques and methods that manufacture and use this device. These diagrams are only typical. The scope of the present disclosure extension has surmounted concrete example explained above, thus obtains the full breadth (and comprising the jljls such as all) of present inventive concept.
Although the various embodiments according to principle disclosed herein has been illustrated and has above described, but it can be modified and not deviate spirit of the present disclosure and teaching by persons skilled in the art.Due to by the characteristics combination of the disclosed embodiments, the alternate embodiment integrating and/or save and obtain also in the scope of the present disclosure. Embodiment described herein is only representative and is not intended to is restrictive. Many changes, combination and amendment can be carried out in the scope of the present disclosure. Therefore, protection scope of the present invention is not limited by the description provided above, but by following scope, described scope comprises the whole of the theme of described claim and waits jljl. In addition, above-described any advantage and feature can relate to specific embodiment, but this application of claim announced should not limited in any or all of advantage with above advantage or the process of any or all of feature with above feature and structure.
In addition, sub-section titles used herein is provided as consistent or for additionally providing organizational cues with according to the suggestion of 37C.F.R1.77. These titles should not limit or be characterized in the invention (multiple invention) set forth from any claim that the disclosure provides. Especially and such as, although title relates to " invention field ", but claim should be limited to by language selected under this title and describes described field. In addition, the technology in " background technology " describes and does not limit in the prior art being interpreted as admitting that specific technology is any invention in the disclosure (multiple invention). " summary of the invention " does not think the limited features of the invention (multiple invention) set forth in the claim provided yet. In addition, any mentioning and should not make for showing only to exist in the disclosure odd number novel point in the singular for " invention " in the disclosure. Multiple invention can be set forth according to the restriction of the multiple claims provided from the disclosure, such claim thus define thus protected invention (multiple invention) and they etc. jljl. It is interpreted as broadly meaning to include, but are not limited at term used herein " comprising ", and indicates according to its typical use in patent context and comprise and unrestricted (making also can exist other elements). In all situations, Given this scope of claim should be disclosed in their self advantages to consider, but should by the constraint of the title set forth at this.
Claims (20)
1. a self contained breathing apparatus, comprising:
One or more air cylinder;
Pressure reducer;
There is the mask of outlet valve;
For being attached to the demand valves of mask, wherein user is sucked air by demand valves and is breathed out air by outlet valve;
Flexible pipe is pressed, wherein pressure reducer and demand valves fluid communication in from pressure reducer to demand valves;
The tensimeter of combination and warning siren; With
Being connected to the fresh air mouth assembly of demand valves so that fresh air mouth assembly is positioned between demand valves and mask, wherein fresh air mouth assembly for rotating and opens and closes one or more mouth leading to ambient air.
2. equipment according to claim 1, wherein fresh air mouth assembly comprises:
For holding the cam knob of one or more drive ball;
Comprise the cam ring for receiving and guide at least one path of drive ball;
For fresh air mouth assembly being attached to the adapter of mask; With
The spring left for cam ring is biased from adapter being positioned between cam ring and adapter.
3. equipment according to claim 2, wherein cam knob comprises the first protuberance, and described first protuberance is used for interacting with outlet valve to keep outlet valve to open when one or more mouth is opened to ambient air.
4. equipment according to claim 3, wherein cam knob comprises the 2nd protuberance, and described 2nd protuberance is used for the position that the user to equipment indicates cam assembly, and when wherein very moment is opened to ambient air, the 2nd protuberance is in the sight line of user.
5. equipment according to claim 2, wherein at least one path of cam ring comprises:
For providing the first part of Perceived control resistance when initialize rotating operation;
For the second section by cam ring movement in the translational motion in face being perpendicular to mask;
For cam ring being locked in the Part III of open position; With
For allowing the Part IV of the assembling of fresh air mouth assembly.
6. equipment according to claim 2, wherein fresh air mouth assembly comprises the front Abdeckteil being attached to cam ring further.
7. equipment according to claim 2, wherein demand valves is attached to fresh air mouth assembly by demand valves adapter.
8. equipment according to claim 1, comprises mask Abdeckteil assembly further, described mask Abdeckteil assembly for cover mask at least partially and outlet valve.
9., with the rotary components comprising mask and using together with the respiratory organ of demand valves, described assembly comprises:
One or more drive ball;
For holding the cam knob of one or more drive ball;
The cam ring being connected to cam knob, described cam ring comprises at least one path for receiving drive ball on the outside surface of cam ring;
For cam assembly being attached to the adapter of the mask of respiratory organ; With
The spring for cam ring is offseted away from adapter being positioned between cam ring and adapter, wherein:
Rotary components is connected to mask so that described assembly is positioned between demand valves and mask, and
Rotary components leads to one or more mouths of ambient air for opening and closing.
10. assembly according to claim 9, wherein cam knob comprises for interacting the first protuberance to keep outlet valve to open with the outlet valve of mask.
11. assemblies according to claim 10, wherein cam knob comprises the 2nd protuberance of the position for indicating cam assembly to the user of equipment, and wherein when mouth is opened to ambient air, the 2nd protuberance is in the sight line of user.
12. assemblies according to claim 9, wherein cam knob is be perpendicular to the face straight line of mask relative to mask rotation and cam ring mobile.
13. assemblies according to claim 9, wherein at least one path of cam ring comprises:
For providing the first part of Perceived control resistance when initialize rotating operation;
For the second section by cam ring movement in the translational motion in face being perpendicular to mask;
For cam ring being locked in the Part III of open position; With
For allowing the Part IV of the assembling of rotary components.
14. assemblies according to claim 9, wherein cam ring comprises the path of two couplings.
15. assemblies according to claim 9, comprise the front Abdeckteil being attached to cam ring with screw further.
16. assemblies according to claim 9, wherein the push rod of adapter and demand valves interacts to activate demand valves or to make demand valves not work.
17. assemblies according to claim 9, the mouth wherein leading to ambient air is opened between demand valves and adapter, and demand valves maintains and is connected to rotary components simultaneously.
18. 1 kinds of methods that the self contained breathing apparatus with mask and demand valves is upgraded or upgrades, described method comprises:
Fresh air mouth assembly is provided;
Fresh air mouth assembly is attached to mask; With
Demand valves is attached to fresh air mouth assembly.
19. methods according to claim 18, are wherein attached to mask by fresh air mouth assembly and comprise: by the adapter of assembly by being threadedly attached to mask.
20. methods according to claim 18, are wherein attached to demand valves fresh air mouth assembly and comprise: the cam ring that demand valves is attached to assembly.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2013/082350 WO2015027390A1 (en) | 2013-08-27 | 2013-08-27 | Fresh air port mechanism for facepiece used on self-contained open-circuit compressed air breathing apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105682750A true CN105682750A (en) | 2016-06-15 |
| CN105682750B CN105682750B (en) | 2019-03-01 |
Family
ID=52585374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380080550.2A Active CN105682750B (en) | 2013-08-27 | 2013-08-27 | Use the fresh air mouth mechanism of the mask on self contained open loop compressed air breathing apparatus |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3038716B1 (en) |
| CN (1) | CN105682750B (en) |
| WO (1) | WO2015027390A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145620A (en) * | 2019-04-02 | 2019-08-20 | 中国辐射防护研究院 | A kind of overall plastic diaphragm type one-way exhaust check (non-return) valve having emergency ventilatory function |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180112776A (en) | 2015-12-30 | 2018-10-12 | 스코트 테크놀로지즈, 인크. | Breathing mask with air-saber switch |
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- 2013-08-27 WO PCT/CN2013/082350 patent/WO2015027390A1/en active Application Filing
- 2013-08-27 EP EP13892386.7A patent/EP3038716B1/en not_active Not-in-force
- 2013-08-27 CN CN201380080550.2A patent/CN105682750B/en active Active
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| US5265597A (en) * | 1992-07-01 | 1993-11-30 | Puritan-Bennett Corporation | Passenger oxygen mask having a plurality of fingers and recesses for mounting the mask to an oxygen bag |
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| CN110145620A (en) * | 2019-04-02 | 2019-08-20 | 中国辐射防护研究院 | A kind of overall plastic diaphragm type one-way exhaust check (non-return) valve having emergency ventilatory function |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3038716A1 (en) | 2016-07-06 |
| EP3038716A4 (en) | 2017-04-12 |
| WO2015027390A1 (en) | 2015-03-05 |
| EP3038716B1 (en) | 2018-11-14 |
| CN105682750B (en) | 2019-03-01 |
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