CN116557604A - Flame retardant device and oxygenerator with flame retardant function - Google Patents
Flame retardant device and oxygenerator with flame retardant function Download PDFInfo
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- CN116557604A CN116557604A CN202310554078.7A CN202310554078A CN116557604A CN 116557604 A CN116557604 A CN 116557604A CN 202310554078 A CN202310554078 A CN 202310554078A CN 116557604 A CN116557604 A CN 116557604A
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Abstract
The invention is suitable for the field of oxygenerator accessories, and provides a flame retardant device and an oxygenerator with a flame retardant function, wherein the flame retardant device comprises: an air inlet end; the air outlet end, the air inlet end and the inside of the air outlet end form an air flow passage with an accommodating space; and a fire protection assembly comprising: the blocking piece is arranged in the accommodating space, and one side of the blocking piece facing the air inlet end is matched with the accommodating space to form a blocking airflow passage; one side of the blocking piece, which faces the air outlet end, is provided with an extension part, and the tail end of the extension part extends to the air outlet of the air outlet end; the trigger part is arranged at the tail end of the extension part, is matched with the air outlet to form an air outlet space, and is made of a heat deformable material; and a force application portion for applying a force to the blocking member toward the air inlet end, the trigger portion being pulled by this to have a tendency to move inward and being blocked by the end portion of the air outlet. The trigger part is positioned outside the air outlet, is more sensitive to trigger when encountering fire, and moves inwards after being fused, so that the probability of blocking is extremely low, and the trigger efficiency is high.
Description
Technical Field
The invention belongs to the technical field of oxygenerator accessories, and particularly relates to a flame retardant device and an oxygenerator with a flame retardant function.
Background
Along with the continuous improvement of living standard and medical equipment technology, oxygenerators are widely applied to medical institutions and ordinary families as equipment for assisting breathing. The current application scenes of the oxygenerator are gradually expanded, so that people suffering from respiratory diseases or cardiovascular and cerebrovascular diseases can use the oxygenerator, and the oxygenerator can be used by common people with more brains to promote blood circulation and relax brains.
Because of the rapid popularization of oxygen generation equipment and the popularity of oxygen generation equipment to many non-professional medical use scenes; in addition, oxygen is combustion-supporting gas, and if an open fire is encountered, the fire is easily increased, so that serious fire is caused. Therefore, it is important to be able to quickly stop the oxygenerator from delivering oxygen when an open flame is encountered.
In view of the above, there is a need for a solution that can rapidly cut off the oxygen generator from delivering oxygen to the outside when an open flame is encountered.
Disclosure of Invention
The embodiment of the application aims to provide a flame retardant device, and aims to solve the problem of how to quickly cut off oxygen conveying outwards when an oxygen generator encounters open fire.
Embodiments of the present application are thus implemented, a flame retardant device, comprising:
an air inlet end;
the air outlet end is provided with an air flow passage with an accommodating space; and
a fire protection assembly, the fire protection assembly comprising:
the blocking piece is arranged in the accommodating space, and one side of the blocking piece, which faces the air inlet end, is matched with the accommodating space to block the airflow passage; an extension part is arranged on one side of the blocking piece, facing the air outlet end, and the tail end of the extension part extends to the air outlet of the air outlet end;
the triggering part is arranged at the tail end of the extension part, is matched with the air outlet to form an air outlet space, and is made of a heat deformable material; and
and a force application part for applying a force to the blocking member toward the air inlet end, the trigger part being pulled by this to have a tendency to move inward and to be blocked by the end of the air outlet.
Another object of the present application is to provide an oxygenerator having a flame retardant function, the oxygenerator comprising:
an oxygenerator body; and
as the flame retardant device is, the flame retardant device is connected with the air outlet of the oxygenerator main body.
According to the flame retardant device provided by the embodiment of the application, the fireproof assembly is formed by the force application part, the blocking part, the extension part, the triggering part and the like, when the triggering part is deformed when being burnt by fire and can be separated from the end face of the air outlet inwards, the force application part pulls the blocking part with released constraint to move towards the air inlet end until an air flow channel for outputting oxygen is blocked; in the application, the triggering part is directly exposed at the air outlet, so that the triggering part can be more directly and fully contacted with flame when being burnt, and the heating deformation is more rapid; moreover, the matching mode is simple, the manufacturing is convenient, the probability of blocking after triggering is low, the probability of successful triggering and oxygen interruption is very high, and the safety of the oxygenerator is greatly improved.
Drawings
Fig. 1 is a longitudinal sectional view of a flame retardant device provided in an embodiment of the present application when a trigger part is not fused;
fig. 2 is an end view of an air outlet end of the flame retardant device provided in the embodiment of the present application when the trigger part is not fused;
FIG. 3 is a longitudinal cross-sectional view of a flame retardant device provided in an embodiment of the present application when a trigger portion is fused;
fig. 4 is a schematic distribution diagram of avoiding grooves on the inner wall of the air outlet end of the flame retardant device according to the embodiment of the present application;
FIG. 5 is an end view of an air outlet end of another flame retardant device provided in an embodiment of the present application when a trigger portion is not fused;
fig. 6 is a schematic diagram illustrating a setting of a limiting groove of a flame retardant device according to an embodiment of the present application.
Description of the embodiments
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the present application are described in detail below in connection with specific embodiments.
As shown in fig. 1 to 6, a block diagram of a flame retardant device according to an embodiment is provided, where the flame retardant device includes:
an air intake end 100;
an air outlet end 200, wherein an air flow passage with an accommodating space 300 is formed inside the air inlet end 100 and the air outlet end 200; and
a fire protection assembly, the fire protection assembly comprising:
a blocking member 410 disposed in the accommodating space 300, wherein the blocking member 410 forms a fit with the accommodating space 300 toward the air inlet end to block the air flow path; an extension part 420 is arranged on one side of the blocking member 410 towards the air outlet end, and the tail end of the extension part 420 extends towards the air outlet 210 of the air outlet end 200;
the triggering part 430 is arranged at the tail end of the extension part 420, and is matched with the air outlet 210 in a way of leaving an air outlet space, and the triggering part and/or the air outlet matched with the triggering part are made of a heat deformable material; and
and a force applying part 440 for applying a force to the blocking member 410 toward the air inlet end, the triggering part 430 being pulled by this to have a tendency to move inward and to be blocked by the end of the air outlet 210.
In this embodiment, in the normal use state, the trigger portion and/or the air outlet that can be deformed by heat form an abutting fit, specifically, the force applied by the force applying portion 440 to the blocking member 410 is transferred to the trigger portion 430 through the extension portion, and the trigger portion 430 abuts against the end surface of the air outlet 210 due to the inward force (i.e. towards the air inlet end), or the matching structure disposed on the end surface of the air outlet 210. The trigger part 430 and/or the air outlet are/is made of a material which can be deformed by heating, and when a fire propagates to the air outlet 210, the trigger part 430 and/or the air outlet are/is deformed by heating slightly, so that the trigger part 430 is separated from the blocking of the air outlet 210, at this time, the blocking member 410 is not restricted by the heat, and is pushed to the air inlet side under the action of the force application part 440, so that the air flow channel of the accommodating space 300 at the side is blocked, further output of oxygen is prevented, and further expansion of the fire is avoided.
In this embodiment of the present application, the triggering portion 430 may be directly exposed to the outside from the air outlet 210, and may be more directly and more rapidly deformed by heat than the setting mode hidden inside the air outlet end, so as to block the output of oxygen, and thus, the triggering sensitivity is higher.
In addition, after the trigger part 430 is disengaged from the air outlet 210, the trigger part is pulled to move inwards, so that the air flow channel at one air inlet end is blocked, and the advantage of blocking the oxygen output by pushing the trigger part outwards is that: in this embodiment, as long as the trigger portion 430 and/or the air outlet are slightly deformed by heat, the trigger portion 430 can be separated from the blocking of the air outlet 210, and the trigger portion 430 will not cross or interfere with the components at the air outlet in the subsequent moving process, so that the success rate of triggering is extremely high. In the outward pushing triggering mode, after the triggering part and the air outlet are heated, even if the initial pressing state is easily released, the subsequent triggering part can not be ejected smoothly to the outside; because the state of deformation of the trigger part and the air outlet after being heated is difficult to predict, the structures of the trigger part and the air outlet cannot be deformed in a regular way according to the ideal state, so that the trigger part cannot be ejected linearly along the air outlet direction as long as the material is heated and deformed unevenly, the trigger part is blocked at the air outlet as long as the trigger part or the extension part is interfered and deflected, and the blocking piece cannot act in place, so that the oxygen blocking failure is caused.
As an embodiment of the present application, the triggering portion 430 and/or the mating structure at the air outlet mated with the triggering portion is a heat deformable material, where the heat deformable material is generally made of a combustible material, and the combustible material is combustible when being heated or exposed to fire, so as to deform or melt, so that the triggering portion 430 is quickly separated from the air outlet to the inner side under the action of the pulling force of the internal force application portion 440, and the blocking member 410 can get rid of the constraint and block the oxygen passage. Of course, the air inlet 430 is generally made of flame retardant material, but some matching structures made of combustible material may be disposed at the air outlet of the air inlet to match the triggering portion 430.
As an embodiment of the present application, it is understood that a space is left between the extension 420 and the air flow channel of the air outlet end 200 to allow air to pass freely, and the same trigger portion 430 also leaves an air outlet space at the end of the air outlet, so that the air outlet is not completely blocked, and the trigger portion 430 is generally configured as a linear rod and is lapped on the end of the air outlet.
As an embodiment of the present application, the air inlet end 100 and the air outlet end 200 are both structures with air nozzles and cavities inside; after the two are connected, the internal cavities are communicated with each other to form an air flow passage, and the air flow passage forms a larger accommodating space 300 at the middle part.
In this embodiment, the blocking member 410 is provided with a first attaching surface 411 facing the air inlet end; the air inlet end 100 is provided with a second fitting surface 120 which is matched with the first fitting surface 411, and the middle part of the second fitting surface 120 is an air flow channel leading to an air inlet of the air inlet end. Optionally, the first fitting surface 411 is an inclined surface with a taper, or an arc surface, and the shape of the second fitting surface is matched with the first fitting surface. Optionally, a guiding rod 413 is disposed at the end of the first abutting surface 411, and the guiding rod 413 extends into the air flow channel inside the air inlet end, so that the blocking member 410 can smoothly approach and abut against the second abutting surface 120 when the blocking member is triggered to block. Further, as shown in fig. 1, a sealing material 412 is disposed on the first bonding surface 411 and/or the second bonding surface 120, and the sealing material 412 is a sealing ring or other sealing member, and when the two surfaces are bonded, the air flow channel is blocked by the sealing material 412.
In one instance, the air tap of the air inlet end 100 corresponds to an air inlet, which is a variable diameter air flow passage with an inner diameter gradually increasing from the air inlet to the inside, and the variable diameter air flow passage extends inward to be engaged with the small end of the second abutting surface 120. The air tap of the air outlet end 200 corresponds to an air outlet, and an air flow channel of the air outlet end is formed from the air outlet to the inside, and the pipe diameter of one side of the air flow channel, which is close to the air inlet end, is larger, so that the accommodating space 300 is formed.
In one case, the air inlet end 100 and the air outlet end 200 are connected by a snap fit connection or a screw thread connection. Preferably, the air inlet end 100 and the air outlet end 200 are connected by threads, one of the two is provided with external threads on the outer pipe wall at the connection side, the other is provided with internal threads matched with the external threads on the inner pipe wall at the connection side, in the structure of fig. 1 and 3, the external threads are arranged at the air inlet end 100, the internal threads are arranged at the air outlet end 200, and the air inlet end is further provided with a limit flange 130 at the middle part for limiting the screwing depth of the air outlet end 200 on the air inlet end 100. In addition, a sealing ring 110 is further disposed between the connection surfaces of the air inlet end 100 and the air outlet end 200, and in the structure illustrated in fig. 1 and 3, the sealing ring 110 is disposed on the outer tube surface of the air inlet end 100 on the side close to the air outlet end 200, so that the inner spaces of the air inlet end 100 and the air outlet end 200 can form a closed space (except for the air inlet and the air outlet).
In one case, the force applying part 440 is an elastic element and/or a magnetic element disposed between the blocking member 410 and the receiving space 300. Alternatively, the elastic element may be a spring, a leaf spring or other element that can generate an elastic force. In fig. 1 and 3, a scheme is shown in which a spring is used as a force application part 440, the spring is sleeved on the root of the extension part 420, one end of the spring is abutted against the blocking piece 410, and the other end of the spring is abutted against a step surface formed by expanding an air flow channel inside the air outlet end 200; in addition, the root diameter of extension 420 is greater than the diameter of the portion thereof that extends into the air flow passage at the air inlet end (but not greater than the inner diameter of the air flow passage inside the air outlet end, avoiding affecting installation) to better fit the spring.
Alternatively, the magnetic element may be two sets of mutually exclusive magnets, where one set is disposed on a step surface formed by expanding an air flow channel inside the air outlet end 200, and the other set is disposed on the blocking member, and the two sets form mutually exclusive. The magnetic elements may also be two groups of mutually attracted magnetic materials, one group is arranged on the first bonding surface 411, and the other group is arranged on the second bonding surface 310; the magnetic material is arranged on the two bonding surfaces in an embedded mode, or the two bonding surfaces are directly made of the magnetic material.
Preferably, the force application portion may also be a combination of a magnetic element and an elastic element, for example, including two sets of magnets that are attracted to each other, where one set is disposed on the first bonding surface 411 and the other set is disposed on the second bonding surface 310. And a group of elastic elements, one end of which is abutted against one side of the blocking piece 410 close to the air outlet end, and the other end of which is abutted against a step surface formed by expanding the air flow channel inside the air outlet end 200; the traction force of the force applying portion 440 can be enhanced by the combination of both elements.
As an embodiment of the present application, the trigger portion 430 is integrally formed with the extension portion 420, or detachably connected thereto; in the case where the trigger portion 430 and the extension portion 420 are integrally formed, the trigger portion 430 and the extension portion 420 may be integrally formed of the same material; of course, it is also possible to integrally manufacture the trigger portion 430 from two different materials through a molding process, such that the trigger portion 430 may be formed from a combustible, thermally deformable material and the extension portion 420 may be formed from a flame retardant material.
In this embodiment, the triggering portion 430 has an abutment portion that is larger than the inner diameter of the air outlet cross section; specifically, in the conventional state, the triggering portion 430 needs to be stably pressed against the air outlet end portion, so that the internal blocking member 410 is kept in a stressed state at all times, and therefore, the triggering portion 430 needs to be not separated from the air outlet end portion under the action of the traction force exerted by the force application portion 440 through the extension portion 420; this requires that the trigger portion 430 have a portion that is dimensionally larger than the cross-sectional diameter of the air outlet, where the portion of the trigger portion that overlaps the end of the air outlet is defined as an abutment. In general, the triggering portion 430 is configured as a linear rod, and the abutting portion 430 is the linear rod, so long as the length of the linear rod is greater than the cross-sectional diameter of the end portion of the air outlet; in other cases, the triggering portion 430 may be provided in other shapes as well, but as long as it has an abutment portion that is larger than the inner diameter of the outlet cross section, and the abutment portion may leave an outlet space when overlapping the outlet end portion. It can be appreciated that the overall shape of the trigger portion 430 is smaller than the outer diameter of the air outlet in the cross-sectional direction of the air outlet, so as to avoid interference of the trigger portion on the butt joint of the air outlet and the air consuming apparatus.
As shown in fig. 2, the airflow channel inside the air outlet end 200 is provided with a relief groove 220 for the abutment portion to pass through, and the relief groove 220 extends to the end of the air outlet. When the trigger portion 430 and the extension portion 420 are integrally formed, or when the trigger portion 430 and the extension portion 420 are detachably connected but are mounted by first connecting and then mounting the trigger portion and the extension portion 420 into the air outlet end 200, it is necessary to provide the escape recess 220 inside the air outlet end, which has a size suitable for the trigger portion/abutment portion to pass through.
Optionally, the extending track of the avoidance groove 220 on the wall of the air flow channel inside the air outlet end is a linear groove, which is the most direct setting mode, and the processing and the installation are relatively simple, and the abutting part can be easily pushed to the end part of the air outlet from the inner side of the air outlet end along the linear groove.
Optionally, the extending track of the avoiding groove 220 on the wall of the air flow channel inside the air outlet end is a spiral line type groove, that is, the distribution track of the avoiding groove 220 on the inner wall of the air outlet end is spiral line type, and when the abutting part is installed, the avoiding groove needs to be pushed to the end part of the air outlet from the inner side of the air outlet end in a spiral way. The advantage of this arrangement is that when the trigger part 430 is separated from the air outlet due to some non-thermal deformation, the trigger part can be blocked on the spiral groove due to the friction force between the parts, so as to avoid blocking the air outlet directly; meanwhile, the spiral avoiding grooves are distributed more uniformly in the circumferential direction of the inner wall of the air outlet end, so that the too low intensity of the whole structure can be avoided.
Optionally, as shown in fig. 4, the avoidance groove 220 extends from a side close to the air inlet end to the air outlet direction on the inner wall of the air outlet end, and after extending to a set distance close to the air outlet 210, the avoidance groove is bent and extends along the circumferential direction of the inner wall of the air outlet end for a set length, and then is bent and extends to the end of the air outlet in the air outlet direction. In this way, the avoiding groove 220 is actually provided with a step-shaped bend near the air outlet, so that the trigger part 430 can be more effectively prevented from being separated from the air outlet due to some non-thermal deformation. The abutting part is twisted when passing through the step in the process of pushing from the inside to the air outlet during installation; for convenient installation, the bending part can be transited through an arc. The set distance and the set length are selected according to the actual situation, and the step for preventing the separation can be formed.
As an embodiment of the present application, as shown in fig. 2, the end portion of the air outlet 210 is further provided with a limit groove 211, and when the trigger portion 430 is embedded in the limit groove 211, the limit groove 211 may limit the rotation of the trigger portion 430. Specifically, when the trigger part 430 passes through the avoidance groove 220 to pass through the air outlet, the trigger part 430 may be twisted by an angle to overlap the air outlet end surface, but if the trigger part is directly overlapped, the trigger part is easily twisted back to the position of the avoidance groove 220 for various reasons, so that in order to avoid this, it is necessary to provide the air outlet end surface with the limit groove 211 and the trigger part 430 to cooperate with each other.
In one case, the depth of the limit groove 211 is set as follows: when the trigger part 430 is placed in the limit groove 211, the end of the trigger part 430 does not exceed the end face of the air outlet. It can be appreciated that the depth of the limiting groove 211 is greater than the thickness of the triggering portion 430 along the air outlet direction, so that the triggering portion 430 can be completely immersed in the limiting groove 211 after being embedded in the limiting groove 211, and the impact on the butt joint use of the flame retardant device caused by the protrusion of the triggering portion 430 is avoided.
As an embodiment of the present application, the shape of the triggering portion 430 is not limited in principle, as long as it is sufficient that the air flow passage is not affected, and that the triggering portion can abut against the air outlet end portion in cooperation with the urging portion in a normal state. However, when considering the convenience of manufacturing and installing the product, a simple structure such as a bar type is preferable.
In one case, when the trigger portion 430 is configured to be in a straight bar shape, the limiting groove 211 is a countersink whose position is offset from that of the avoiding groove 220. That is, the trigger part 430 adopts the most common straight bar shape, the limit groove 211 is a sinking groove which is staggered with the avoiding groove 220 by a proper angle, and can be staggered by 90 degrees generally, so that the device is attractive and practical. Preferably, when the trigger portion 430 is configured as a straight bar, and the trigger portion and the extension portion are integrally formed, a connection portion between one side of the contact portion of the trigger portion and the extension portion may be configured as an arc-shaped transition curved surface, so as to reduce a decrease in strength of the trigger portion caused by stress concentration.
In another case, when the cross-sectional shape of the trigger part 430 along the direction perpendicular to the air outlet is in a shape with one end being large and one end being small, the escape recess 220 includes a first escape recess 221 for passing through the large end of the trigger part and a second escape recess 222 for passing through the small end of the trigger part; the limiting groove 211 is a countersink with a position staggered from the position of the avoidance groove 220, or, as shown in fig. 5 and 6, the limiting groove 211 is a step groove formed on the air outlet end surface of the second avoidance groove 222 and used for limiting (limiting rotation) the large end of the trigger portion, and the width of the second avoidance groove 222 is smaller than that of the large end of the trigger portion. It can be appreciated that the projection of the limiting groove 211 in the air outlet direction overlaps with the second avoidance groove 222 and has a larger width, the large end of the trigger portion 430 is limited, and the small end of the trigger portion 430 is just suspended in the first avoidance groove 221. In this case, only the large end of the trigger part 430 abuts against the limit groove 211, and the deformation reaction after heating is more sensitive; moreover, the structure can avoid that the end part of the air outlet is processed with more grooves, so that the structural strength of the air outlet is reduced. When the structure is adopted, after the trigger part passes through the avoidance groove, the large end of the trigger part is embedded into the stepped limit groove positioned at the outer side of the second avoidance groove 222 as long as the trigger part rotates 180 degrees.
As an embodiment of the present application, the triggering portion 430 is detachably connected to the extension portion 420, and the triggering portion 430 and the extension portion 420 may be connected after the extension portion passes through the air outlet, in this case, the avoiding groove 220 may not be provided on the inner wall of the air outlet end. Of course, the inner wall of the air outlet end may still be provided with the avoiding groove 220 according to needs, and the trigger portion 430 and the extension portion 420 may be assembled together first and then pushed to the air outlet through the avoiding groove 220.
In one case, one way of removably attaching is a threaded connection. For example: a threaded rod is arranged on the inner side of the triggering part, and a threaded sleeve matched with the threaded rod is arranged on the extending part; or, a threaded hole is formed in the middle of the trigger part, and a screw rod matched with the threaded hole is formed at the tail end of the extension part.
In one case, another way of detachably connecting is a snap, for example: the middle part of the triggering part is provided with a bayonet, the tail end of the triggering part is provided with a clamping joint, and the clamping joint can be extruded into the bayonet to form a backstop connection similar to the connection mode of a binding belt.
As an embodiment of the present application, the triggering portion 430 and the air outlet end portion may be detachably connected. In one case, the specific detachable connection means is: the end part of the air outlet is provided with a pin shaft; the triggering part 430 is in a hook structure or a loop structure, and the triggering part 430 is hooked on the pin shaft in the form of the hook structure or sleeved on the pin shaft in the form of the loop structure. It is understood that the side wall of the air outlet end is provided with a mounting hole for assembling the pin shaft.
In the above embodiment of the present application, the fireproof assembly is formed by the force application portion, the blocking portion, the extension portion, the triggering portion, and the like, when the triggering portion is deformed by firing to be able to be separated from the end face of the air outlet inwards, the force application portion pulls the blocking portion, which is released from the constraint, to move towards the air inlet end until the air flow channel for outputting oxygen is blocked; in the application, the triggering part is directly exposed at the air outlet, can directly contact flame when being burnt, and is more rapidly deformed by heating; moreover, the matching mode is simple, the manufacturing is convenient, the probability of blocking after triggering is low, the probability of successful triggering and oxygen interruption is very high, and the safety of the oxygenerator is greatly improved.
In one embodiment of the present application, there is also provided an oxygenerator having a flame retardant function, the oxygenerator including:
an oxygenerator body; and
the flame retardant device of any one of the above embodiments, wherein the flame retardant device is connected to an air outlet of the oxygenerator main body.
In this embodiment, the air inlet end of the flame retardant device is in butt joint with the air outlet of the oxygenerator main body, and the air outlet end of the flame retardant device is in butt joint with the air using equipment. Through setting up the fire-retardant device that provides in the above-mentioned implementation, appear open flame when using gas equipment or around, and flame when spreading to fire-retardant device, fire-retardant device can cut off the oxygen passageway rapidly, can improve oxygenerator's security greatly, and in addition, this fire-retardant device's trigger part is located outside the gas outlet, meets the fire and triggers more sensitively, and the trigger part fuses the back and inwards moves, and the probability of blocking is extremely low, and trigger efficiency is high.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. A flame retardant device, comprising:
an air inlet end;
the air outlet end is provided with an air flow passage with an accommodating space; and
a fire protection assembly, the fire protection assembly comprising:
the blocking piece is arranged in the accommodating space, and one side of the blocking piece, which faces the air inlet end, is matched with the accommodating space to block the airflow passage; an extension part is arranged on one side of the blocking piece, facing the air outlet end, and the tail end of the extension part extends to the air outlet of the air outlet end;
the triggering part is arranged at the tail end of the extension part, is matched with the air outlet to form an air outlet space, and is made of a heat deformable material; and
and a force application part for applying a force to the blocking member toward the air inlet end, the trigger part being pulled by this to have a tendency to move inward and to be blocked by the end of the air outlet.
2. The flame retardant device of claim 1, wherein the trigger portion is integrally formed with the extension portion or removably attached.
3. The flame retardant device of claim 2, wherein the trigger portion has an abutment portion that is larger than an inner diameter of the air outlet cross section, and the overall shape of the trigger portion is smaller in size in the air outlet cross section direction than an outer diameter of the air outlet;
an avoidance groove used for the abutting part to pass through is formed in the air flow channel inside the air outlet end, and the avoidance groove extends to the end part of the air outlet.
4. A fire retardant device according to claim 3 wherein the end of the air outlet is further provided with a limit groove which limits rotation of the trigger portion when the trigger portion is inserted into the limit groove.
5. The flame retardant device of claim 4, wherein the depth of the limiting groove is set to: when the trigger part is placed in the limit groove, the tail end of the trigger part does not exceed the end face of the air outlet.
6. The flame retardant device according to claim 4, wherein when the trigger part is arranged in a straight strip shape, the limit groove is a sink groove with a position staggered from a position of the avoiding groove;
when the cross section of the triggering part is in a shape with one large end and one small end along the direction perpendicular to the air outlet direction, the avoidance groove comprises a first avoidance groove for passing through the large end of the triggering part and a second avoidance groove for passing through the small end of the triggering part; the limiting groove is a countersink with the positions staggered with the positions of the avoidance grooves, or the limiting groove is a step groove formed by the second avoidance grooves on the end face of the air outlet and used for limiting the large end of the trigger part, and the width of the second avoidance grooves is smaller than that of the large end of the trigger part.
7. The flame retardant device of claim 2, wherein the trigger portion is detachably connected to the air outlet end portion, the detachable connection being:
the end part of the air outlet is provided with a pin shaft; the triggering part is of a clamping hook structure or a loop structure, and is hooked on the pin shaft in the mode of the clamping hook structure or sleeved on the pin shaft in the mode of the loop structure.
8. The flame retardant device of claim 1, wherein the blocking member is provided with a first abutment surface on a side facing the air intake end; the air inlet end is provided with a second joint surface matched with the first joint surface, and the middle part of the second joint surface is an air flow channel leading to the air inlet end; and sealing materials are arranged on the first bonding surface and/or the second bonding surface.
9. The flame retardant device according to claim 1, wherein the force application portion is:
elastic elements or magnetic elements or a combination of both elements arranged between the blocking member and the receiving space.
10. An oxygenerator with flame retardant function, characterized in that it comprises:
an oxygenerator body; and
the flame retardant device of any one of claims 1 to 9, wherein the flame retardant device is connected to an air outlet of the oxygenerator body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310554078.7A CN116557604A (en) | 2023-05-17 | 2023-05-17 | Flame retardant device and oxygenerator with flame retardant function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310554078.7A CN116557604A (en) | 2023-05-17 | 2023-05-17 | Flame retardant device and oxygenerator with flame retardant function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116557604A true CN116557604A (en) | 2023-08-08 |
Family
ID=87487667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310554078.7A Pending CN116557604A (en) | 2023-05-17 | 2023-05-17 | Flame retardant device and oxygenerator with flame retardant function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116557604A (en) |
-
2023
- 2023-05-17 CN CN202310554078.7A patent/CN116557604A/en active Pending
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