Fire protection device, oxygen therapy apparatus and ventilation therapy system

Abstract

The embodiment of the application discloses a fireproof device, an oxygen therapy instrument and a ventilation treatment system, and relates to the technical field of medical instruments.The fireproof device comprises a shell, an elastic element, a valve body and a fusible component; the shell is internally provided with an accommodating cavity and a gas passage; the valve body separates the accommodating cavity and the gas passage into mutually independent spaces; the elastic element is arranged in the accommodating cavity, the valve body is at least partially located in the gas passage, and the elastic element abuts against the shell and the valve body; the fusible component is arranged between the valve body and the gas passage, and a gap is formed between the fusible component and the gas passage; when the fusible component is in a non-melting state, the fusible component supports the valve body to be in a first position, and the gas passage is in an open state; when the fusible component is in a melting state, the elastic element drives the valve body to be in a second position, and the gas passage is in a closed state. The accommodating cavity where the elastic element is located and the gas passage are mutually independent, the problem of oxidation of the elastic element is avoided, and the durability of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a fire prevention device, an oxygen therapy device, and a ventilation therapy system. Background Technology

[0002] Currently, oxygen therapy is widely used in clinical treatment and hospital emergency care. When a patient's own oxygen intake is insufficient to meet their needs, external oxygen delivery is usually required. This can be achieved using external instruments, either invasively or non-invasively, to supply oxygen to the patient. Instruments used to supply oxygen to patients are collectively referred to as oxygen therapy devices.

[0003] Due to the combustion-supporting properties of oxygen, fire prevention devices are usually installed on oxygen therapy devices. In the event of an oxygen leak that causes a fire, the oxygen supply can be cut off in time through the fire prevention device to reduce the spread of the fire and minimize losses.

[0004] The existing fire prevention device is connected to the oxygen pipeline of the oxygen therapy device. Under the oxidation of oxygen, the fire prevention device is prone to aging and failure. In the event of a fire, there is still a risk of oxygen leakage, resulting in a low safety factor. Summary of the Invention

[0005] This invention provides a fire prevention device, an oxygen therapy device, and a ventilation therapy system, aiming to solve the problems in the prior art where fire prevention devices are prone to aging and failure, and where there is still a risk of oxygen leakage in the event of a fire, resulting in a low safety factor.

[0006] In a first aspect, embodiments of the present invention disclose a fire-prevention device, the fire-prevention device comprising: a housing, an elastic element, a valve body, and a fusible component;

[0007] The housing has a receiving cavity and a gas channel, which is used to connect to the tubing of the oxygen therapy device or the patient end;

[0008] The valve body separates the receiving cavity and the gas passage into independent spaces;

[0009] The elastic element is disposed within the receiving cavity, the valve body is at least partially located within the gas passage, and the elastic element abuts against the housing and the valve body respectively;

[0010] The fusible component is disposed between the valve body and the gas passage, and there is a gap between the fusible component and the gas passage;

[0011] When the fusible component is in a non-molten state, the fusible component supports the valve body in a first position, and the gas passage is in an open state;

[0012] When the fusible component is in a molten state, the elastic element drives the valve body to a second position, and the gas passage is closed.

[0013] Optionally, the housing includes a first housing and a second housing;

[0014] The first housing and the second housing are rotatably connected;

[0015] The first housing is provided with a first through hole and a second through hole;

[0016] The second housing is provided with a third through hole and a fourth through hole;

[0017] The valve body is fixedly connected to the first housing, and the valve body is provided with a fifth through hole;

[0018] The fusible component is respectively engaged with the valve body and the second housing, and the fusible component is provided with a sixth through hole;

[0019] The elastic element abuts against the valve body and the second housing, respectively;

[0020] When the fusible component is in the non-molten state, the fusible component supports the valve body in the first position, and the first through hole, the second through hole, the third through hole, the fourth through hole, the fifth through hole and the sixth through hole are connected to form the gas channel, which is in the open state;

[0021] When the fusible component is in the molten state, the elastic element drives the first housing and the second housing to rotate relative to each other, the valve body is in the second position, the first through hole, the second through hole and the fifth through hole are respectively attached to the shell wall of the second housing, and the gas passage is in the closed state.

[0022] Optionally, the second housing is provided with a first protrusion and a second protrusion;

[0023] The third through hole is disposed on the first protrusion, and the fourth through hole is disposed on the second protrusion;

[0024] The fusible component is at least partially embedded in the third or fourth through hole.

[0025] Optionally, the first protrusion is provided with a first extension, and the second protrusion is provided with a second extension;

[0026] When the valve body is in the second position, the two ends of the fifth through hole are respectively attached to the first extension and the second extension.

[0027] Optionally, a third extension is provided at one end of the valve body, and a fourth extension is provided at the other end of the valve body;

[0028] When the valve body is in the second position, the third through hole is in contact with the third extension, and the fourth through hole is in contact with the fourth extension.

[0029] Optionally, the second housing is provided with at least one limiting part, which is located on the movement path of the valve body;

[0030] When the valve body is in the second position, the valve body abuts against the limiting part.

[0031] Optionally, the first housing is provided with a first connecting portion and a second connecting portion;

[0032] The first through hole is disposed in the first connecting portion, and the second through hole is disposed in the second connecting portion;

[0033] The first connecting part and the second connecting part are respectively used to connect to the tubing of the oxygen therapy device or the patient end.

[0034] Optionally, the gas passage includes a first pipeline interface, a second pipeline interface, and a connecting portion;

[0035] The connecting portion has an internal cavity;

[0036] The first pipe interface and the second pipe interface are located at both ends of the connecting portion and are respectively connected to the inner cavity to form the gas channel;

[0037] The first pipeline interface and the second pipeline interface are symmetrically arranged.

[0038] Optionally, the fusible member is located in the inner cavity, and the fusible member is clearance-fitted with the cavity wall of the inner cavity.

[0039] Secondly, embodiments of the present invention also disclose an oxygen therapy device, including the aforementioned fire-prevention device.

[0040] Thirdly, embodiments of the present invention also disclose a ventilation therapy system, which includes the oxygen therapy device described above.

[0041] In this embodiment of the invention, the fireproof device includes: a housing, an elastic element, a valve body, and a fusible component; the housing has a receiving cavity and a gas channel, the gas channel being used to connect to the pipeline of an oxygen therapy device or a patient end; the valve body separates the receiving cavity and the gas channel into independent spaces; the elastic element is disposed in the receiving cavity, and the valve body is at least partially located in the gas channel, the elastic element abutting against the housing and the valve body respectively; a fusible component is disposed between the valve body and the gas channel, and there is a gap between the fusible component and the gas channel; when the fusible component is in a non-molten state, the fusible component supports the valve body in a first position, and the gas channel is in an open state; when the fusible component is in a molten state, the elastic element drives the valve body to a second position, and the gas channel is in a closed state. In the event of a fire, the fusible component melts when the temperature reaches its melting point. The fusible component is insufficient to support the elastic force applied to the valve body by the elastic element. The elastic element releases its stored elastic potential energy, and the valve body switches from the first position to the second position under the drive of the elastic element, occupying the space of the gas passage, thereby cutting off the oxygen passage and preventing the continuous leakage of oxygen from causing the fire to spread. Furthermore, the cavity in which the elastic element is located is independent of the gas passage, avoiding the problem of oxidation of the elastic element and improving the durability and safety factor of the device. Attached Figure Description

[0042] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 A schematic diagram of the fire protection device structure described in an embodiment of the present invention is shown;

[0044] Figure 2 A schematic diagram of the first housing structure described in an embodiment of the present invention is shown;

[0045] Figure 3 A schematic diagram of the assembly structure of the first housing and the second housing described in an embodiment of the present invention is shown;

[0046] Figure 4 One of the schematic diagrams of the second shell structure described in an embodiment of the present invention is shown;

[0047] Figure 5 This shows a second schematic diagram of the second shell structure described in an embodiment of the present invention;

[0048] Figure 6 This diagram illustrates the structure of the gas channel in the open state according to an embodiment of the present invention.

[0049] Figure 7A schematic diagram of the gas channel in the closed state according to an embodiment of the present invention is shown.

[0050] Explanation of reference numerals in the attached figures

[0051] 10-Housing; 20-Elastic element; 30-Valve body; 40-Fusible component; 103-First housing; 104-Second housing; 105-First through hole; 106-Second through hole; 107-Third through hole; 108-Fourth through hole; 109-First protrusion; 110-Second protrusion; 111-First extension; 112-Second extension; 113-Limiting part; 114-First connecting part; 115-Second connecting part; 301-Fifth through hole; 302-Third extension; 303-Fourth extension; 401-Sixth through hole. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] Reference Figure 1 As shown in the figure, an embodiment of the present invention discloses a fireproof device, which includes: a housing 10, an elastic element 20, a valve body 30, and a fusible component 40; the housing 10 has a receiving cavity and a gas channel 102, the gas channel 102 being used to connect to the pipeline of an oxygen therapy device or a patient end; the valve body 30 separates the receiving cavity and the gas channel 102 into independent spaces; the elastic element 20 is disposed in the receiving cavity, and the valve body 30 is at least partially located in the gas channel 102, the elastic element 20 abutting against the housing 10 and the valve body 30 respectively; a fusible component 40 is disposed between the valve body 30 and the gas channel 102, and there is a gap between the fusible component 40 and the gas channel 102; when the fusible component 40 is in a non-molten state, the fusible component 40 supports the valve body 30 in a first position, and the gas channel 102 is in an open state; when the fusible component 40 is in a molten state, the elastic element 20 drives the valve body 30 to a second position, and the gas channel 102 is in a closed state.

[0054] Specifically, such as Figure 1As shown, the fire-resistant device includes a housing 10, an elastic element 20, a valve body 30, and a fusible component 40. The housing 10, serving as the main frame of the fire-resistant device, can be made of materials such as plastic that do not readily react chemically with oxygen. The housing 10 contains a receiving cavity and a gas passage 102. The internal wall of the housing 10 and the valve body 30 separate the receiving cavity and the gas passage 102 into independent spaces, preventing oxygen from entering the receiving cavity from the gas passage 102. The receiving cavity and housing 10 can be manufactured using an integral molding process, such as open-mold casting, where the position of the receiving cavity can be pre-reserved in the mold. This integral molding process ensures the structural strength of the housing 10 and the airtightness of the receiving cavity. Alternatively, the receiving cavity and housing 10 can be manufactured separately, with partitions or other components added to the housing 10 to divide the receiving cavity. This embodiment of the invention does not limit the specific manufacturing method. The valve body 30 can be made of rubber, allowing for a good fit between the valve body and the gas passage 102 and the receiving cavity.

[0055] The elastic element 20 is disposed within the receiving cavity. The elastic element 20 can be a metal spring such as iron, copper, or alloy, or a soft rubber such as silicone or rubber that can store elastic potential energy. The elastic element 20 can store elastic potential energy and, in the event of a fire, push the valve body 30 to close the gas passage 102, blocking the passage of oxygen, thereby achieving a fireproof effect.

[0056] A fusible component 40 is disposed between the valve body 30 and the gas passage 102 to support the valve body 30. There is a gap between the fusible component 40 and the gas passage 102, through which oxygen can flow normally. The fusible component 40 is usually made of a material with a low melting point, such as PP or PVC.

[0057] When no fire occurs (at a low temperature), the fusible component 40 is in a non-molten state and has a certain rigidity, which can support the valve body 30. At this time, the valve body 30 is in the first position, the gas passage 102 is open, and oxygen can flow normally in the gas passage 102. When the valve body 30 is in the first position, the elastic force exerted by the elastic element 20 on the valve body 30 and the supporting force exerted by the fusible component 40 on the valve body 30 are in a state of equilibrium.

[0058] In the event of a fire (at a high temperature), the fusible component 40 is in a molten state and can no longer support the valve body 30. The balance of the valve body 30 is broken. At this time, the valve body 30 will move from the first position to the second position under the elastic force of the elastic element 20. The gas passage 102 is closed and the oxygen passage is blocked.

[0059] The first position and the second position of the valve body 30 are the positions of the valve body 30 relative to the gas channel 102. When the valve body 30 switches between the first position and the second position, it can be switched by rotation, as long as it can realize the opening and closing of the gas channel 102. This embodiment of the invention does not limit this.

[0060] In this embodiment of the invention, when a fire occurs, the fusible component 40 will be in a molten state when the temperature reaches the melting point. The fusible component 40 is insufficient to support the elastic force applied to the valve body 30 by the elastic element 20. The elastic element 20 releases the stored elastic potential energy, and the valve body 30 switches from the first position to the second position under the drive of the elastic element 20, occupying the space of the gas passage 102, thereby cutting off the oxygen passage and preventing the continuous leakage of oxygen from causing the fire to spread. Furthermore, the cavity in which the elastic element 20 is located is independent of the gas passage 102, which avoids the problem of oxidation of the elastic element 20 and improves the durability and safety factor of the device.

[0061] Optionally, refer to Figures 1 to 6 As shown, the housing 10 includes a first housing 103 and a second housing 104; the first housing 103 and the second housing 104 are rotatably connected; the first housing 103 is provided with a first through hole 105 and a second through hole 106; the second housing 104 is provided with a third through hole 107 and a fourth through hole 108; the valve body 30 is fixedly connected to the first housing 103, and the valve body 30 is provided with a fifth through hole 301; the fusible member 40 is respectively engaged with the valve body 30 and the second housing 104, and the fusible member 40 is provided with a sixth through hole 401; the elastic member 20 abuts against the valve body 30 and the second housing 104 respectively; when the fusible member 40 is in a non-molten state... In the first position, the fusible component 40 supports the valve body 30, and the first through hole 105, the second through hole 106, the third through hole 107, the fourth through hole 108, the fifth through hole 301, and the sixth through hole 401 are connected to form a gas channel 102, which is in the open state. When the fusible component 40 is in the molten state, the elastic element 20 drives the first housing 103 and the second housing 104 to rotate relative to each other, and the valve body 30 is in the second position. The first through hole 105, the second through hole 106, and the fifth through hole 301 are respectively attached to the shell wall of the second housing 104, and the gas channel 102 is in the closed state.

[0062] Specifically, such as Figures 1 to 6 As shown, in this embodiment of the invention, the housing 10 includes a first housing 103 and a second housing 104. The first housing 103 and the second housing 104 can be disc-shaped, having a bottom surface and sidewalls. The diameter of the first housing 103 is slightly larger than the diameter of the second housing 104. The first housing 103 and the second housing 104 are fastened together to form an internal space. The first housing 103 and the second housing 104 can also adopt a spherical structure; this embodiment of the invention does not limit this.

[0063] The first housing 103 and the second housing 104 are rotatably connected. Specifically, a pivot can be provided at the axis of the first housing 103 and the second housing 104, allowing the first housing 103 and the second housing 104 to rotate relative to each other around the pivot. Alternatively, the sidewalls of the first housing 103 and the second housing 104 can be fitted together and rotate relative to each other around the fitting surface. The sidewall of the first housing 103 is provided with a first through hole 105 and a second through hole 106, which are used to connect the oxygen therapy device or the patient's end tubing, respectively. Oxygen can be input into the housing 10 through the first through hole 105 and then flow out through the second through hole 106.

[0064] The valve body 30 is fixedly connected to the first housing 103. The valve body 30 is provided with a fifth through hole 301, the two ends of which are respectively opposite to the first through hole 105 and the second through hole 106. The side wall of the second housing 104 is also provided with a third through hole 107 and a fourth through hole 108. The fusible member 40 is a hollow cylindrical structure with a sixth through hole 401. The fusible member 40 can be disposed between the valve body 30 and the second housing 104, and can be engaged with the valve body 30 and the second housing 104 respectively. When no fire occurs (low temperature), the fusible member 40 has a certain rigidity, restricting the relative rotation of the first housing 103 and the second housing 104. The number of fusible members 40 can be one or two. When there is only one fusible member 40, it can be engaged with the fifth through hole 301 and the third through hole 107 respectively, or it can be engaged with the fifth through hole 301 and the fourth through hole 108 respectively. When there are two fusible components 40, fusible components 40 can be provided between the fifth through hole 301 and the third through hole 107, and between the fifth through hole 301 and the fourth through hole 108.

[0065] The elastic element 20 is located within the mounting cavity formed by the first housing 103 and the second housing 104. The elastic element 20 abuts against the valve body 30 and the second housing 104 respectively, accumulating elastic potential energy. The elastic element 20 can be a metal torsion spring or clockwork made of iron, copper, alloy, etc., or a soft rubber structure that can store elastic potential energy, such as silicone or rubber. The number of elastic elements 20 can be one or more. When the valve body 30 is in the first position, the elastic force exerted by the elastic element 20 on the second housing 104 and the valve body 30, and the supporting force exerted by the fusible member 40 on the second housing 104 and the valve body 30 are in a balanced state.

[0066] When no fire occurs (at a low temperature), the fusible component 40 is in a non-molten state and has a certain rigidity, which can support the valve body 30, keeping the first housing 103 and the second housing 104 in a relatively stationary state. The valve body 30 is in the first position, and the first through hole 105, the second through hole 106, the third through hole 107, the fourth through hole 108, the fifth through hole 301, and the sixth through hole 401 are connected to form a gas channel 102. The gas channel 102 is in the open state, and oxygen can enter the gas channel 102 through the first through hole 105 and then flow out through the second through hole 106. Furthermore, the gas channel 102 is independent of the receiving cavity where the elastic element 20 is located, avoiding the problem of oxidation of the elastic element 20 and improving the durability and safety factor of the device.

[0067] The first through hole 105, the second through hole 106, the third through hole 107, the fourth through hole 108, the fifth through hole 301, and the sixth through hole 401 can be located on the same straight line to form a straight gas channel 102; or they can be not on the same straight line and bend at a certain angle, as long as they can achieve normal oxygen transmission.

[0068] In the event of a fire (high temperature), the fusible component 40 is in a molten state. The fusible component 40 is insufficient to support the rotational torque applied between the first housing 103 and the second housing 104 by the elastic element 20. The balance between the first housing 103 and the second housing 104 is broken. At this time, the elastic element 20 releases its stored elastic potential energy. Under the elastic force of the elastic element 20, the valve body 30 and the first housing 103 rotate relative to the second housing 104. The valve body 30 rotates from the first position to the second position. The fifth through hole 301 on the valve body 30 is misaligned with the third through hole 107 and the fourth through hole 108 on the second housing 104. The first through hole 105 and the second through hole 106 are also misaligned with the third through hole 107 and the fourth through hole 108, respectively. After the first housing 103 and the second housing 104 rotate relative to each other, the first through hole 105, the second through hole 106, and the fifth through hole 301 respectively adhere to the shell wall of the second housing 104, thereby blocking the oxygen passage and closing the gas passage 102. This prevents further oxygen leakage and avoids further deterioration of the fire, thus achieving the effect of fire prevention.

[0069] The first and second positions of the valve body 30 refer to its position relative to the second housing 104. When the valve body 30 is in the first position, the first through hole 105, the second through hole 106, the third through hole 107, the fourth through hole 108, the fifth through hole 301, and the sixth through hole 401 are connected, and the gas passage 102 is in the open state. When the first housing 103 and the second housing 104 rotate relative to each other, and the valve body 30 rotates to the second position, the gas passage 102 is divided into multiple segments and blocked by the shell wall of the second housing 104, at which time the gas passage 102 is in the closed state.

[0070] Optionally, refer to Figures 1 to 6 As shown, the second housing 104 is provided with a first protrusion 109 and a second protrusion 110; a third through hole 107 is provided in the first protrusion 109 and a fourth through hole 108 is provided in the second protrusion 110; the fusible member 40 is at least partially embedded in the third through hole 107 or the fourth through hole 108.

[0071] Specifically, such as Figures 1 to 6 As shown, within the second housing 104, a first protrusion 109 and a second protrusion 110 extend from the sidewall and are disposed opposite to each other. The first protrusion 109 and the second protrusion 110 can be integrally formed with the second housing 104. A third through hole 107 is disposed in the first protrusion 109, and a fourth through hole 108 is disposed in the second protrusion 110, forming two gas channels 102 within the second housing 104. When the fusible member 40 is engaged with the valve body 30 and the second housing 104, the fusible member 40 is at least partially embedded in the third through hole 107 or the fourth through hole 108. The specific embedding position can be selected according to the number of fusible members 40 and their installation position.

[0072] The residue after the fusible component 40 melts due to heat is stored in the third through hole 107 or the fourth through hole 108 respectively, and will not enter the oxygen delivery pipeline, so that the patient has no risk of inhaling foreign objects.

[0073] Optionally, refer to Figures 1 to 6 As shown, the first protrusion 109 is provided with a first extension 111, and the second protrusion 110 is provided with a second extension 112; when the valve body 30 is in the second position, the two ends of the fifth through hole 301 are respectively attached to the first extension 111 and the second extension 112.

[0074] Specifically, such as Figures 1 to 6 As shown, a first extension 111 is provided on the side of the first protrusion 109 near the valve body 30, and a second extension 112 is provided on the side of the second protrusion 110 near the valve body 30. The first extension 111, the first protrusion 109, the second extension 112, and the second protrusion 110 can be manufactured using an integral molding process. The first extension 111 and the second extension 112 can have an arc-shaped structure, and this arc-shaped structure matches the end shape of the valve body 30.

[0075] When the valve body 30 is in the second position, the two ends of the fifth through hole 301 are respectively fitted with the first extension 111 and the second extension 112 to achieve a seal, preventing the residual oxygen in the valve body 30 from leaking into the receiving cavity, and at the same time improving the fireproof effect.

[0076] Optionally, refer to Figures 1 to 6 As shown, a third extension 302 is provided at one end of the valve body 30, and a fourth extension 303 is provided at the other end of the valve body 30; when the valve body 30 is in the second position, the third through hole 107 is fitted with the third extension 302, and the fourth through hole 108 is fitted with the fourth extension 303.

[0077] Specifically, such as Figures 1 to 6 As shown, a fifth through hole 301 is provided on the valve body 30. A third extension 302 and a fourth extension 303 extend from both ends of the fifth through hole 301, respectively. The third extension 302 and the fourth extension 303 can be integrally formed with the valve body 30. The third extension 302 and the fourth extension 303 can adopt an arc-shaped structure, and the arc-shaped structure matches the end shape of the third through hole 107 and the fourth through hole 108.

[0078] When the valve body 30 is in the second position, the third through hole 107 is fitted with the third extension 302, and the third extension 302 seals one end of the third through hole 107; the fourth through hole 108 is fitted with the fourth extension 303, and the fourth extension 303 seals one end of the fourth through hole 108, preventing oxygen from passing through and making the fire prevention effect more significant.

[0079] Optionally, refer to Figures 1 to 6 As shown, the second housing 104 is provided with at least one limiting part 113, which is located on the movement path of the valve body 30; when the valve body 30 is in the second position, the valve body 30 abuts against the limiting part 113.

[0080] Specifically, such as Figures 1 to 6 As shown, the limiting part 113 is disposed on the second housing 104. The specific structure of the limiting part 113 can be plate-shaped, cylindrical, or other structures. The limiting part 113 and the second housing 104 can be manufactured using an integral molding process. The limiting part 113 is located on the movement path of the valve body 30, that is, when the valve body 30 rotates relative to the second housing 104, it will contact the limiting part 113. The number of limiting parts 113 can be one or two. When there are two limiting parts 113, the two limiting parts 113 can be located on both sides of the valve body 30, and there is a certain distance between them and the valve body 30.

[0081] In the event of a fire, at least a portion of the fusible component 40 melts due to heat, insufficient to support the rotational torque applied between the first housing 103 and the second housing 104 by the elastic element 20. At this point, the elastic element 20 releases its stored elastic potential energy, causing relative rotation between the first housing 103 and the second housing 104 until the valve body 30 contacts the limiting portion 113 of the second housing 104, at which point rotation stops. At this point, a stable assembly is formed between the first housing 103 and the second housing 104 under the combined action of the elastic element 20 and the limiting portion 113.

[0082] Optionally, refer to Figures 1 to 6 As shown, the first housing 103 is provided with a first connecting part 114 and a second connecting part 115; a first through hole 105 is provided in the first connecting part 114, and a second through hole 106 is provided in the second connecting part 115; the first connecting part 114 and the second connecting part 115 are respectively used to connect with the pipeline of the oxygen therapy device or the patient end.

[0083] Specifically, such as Figures 1 to 6 As shown, the tubing of the oxygen therapy device or the patient end is connected to the fireproof device through the first through hole 105 and the second through hole 106. To improve the convenience of tubing connection, a first connecting part 114 and a second connecting part 115 are provided on the first housing 103. The first connecting part 114 and the second connecting part 115 extend radially outward along the first housing 103. The first through hole 105 is provided in the first connecting part 114, and the second through hole 106 is provided in the second connecting part 115. When installing the tubing of the oxygen therapy device or the patient end, the tubing can be directly sleeved or embedded in the first connecting part 114 and the second connecting part 115 without occupying the internal space of the housing 10.

[0084] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0085] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A fire prevention device, characterized in that, The fire protection device includes: a housing, an elastic element, a valve body, and a fusible component; The housing has a receiving cavity and a gas channel, which is used to connect to the tubing of the oxygen therapy device or the patient end; The valve body separates the receiving cavity and the gas passage into independent spaces; The elastic element is disposed within the receiving cavity, the valve body is at least partially located within the gas passage, and the elastic element abuts against the housing and the valve body respectively; The fusible component is disposed between the valve body and the gas passage, and there is a gap between the fusible component and the gas passage; When the fusible component is in a non-molten state, the fusible component supports the valve body in a first position, and the gas passage is in an open state; When the fusible component is in a molten state, the elastic element drives the valve body to the second position, and the gas passage is in a closed state; The housing includes a second housing; The second housing is provided with a third through hole and a fourth through hole; The second housing is provided with a first protrusion and a second protrusion; The third through hole is disposed on the first protrusion, and the fourth through hole is disposed on the second protrusion; The fusible component is at least partially embedded in the third or fourth through hole.

2. The fire prevention device according to claim 1, characterized in that, The housing also includes a first housing; The first housing and the second housing are rotatably connected; The first housing is provided with a first through hole and a second through hole; The valve body is fixedly connected to the first housing, and the valve body is provided with a fifth through hole; The fusible component is respectively engaged with the valve body and the second housing, and the fusible component is provided with a sixth through hole; The elastic element abuts against the valve body and the second housing, respectively; When the fusible component is in the non-molten state, the fusible component supports the valve body in the first position, and the first through hole, the second through hole, the third through hole, the fourth through hole, the fifth through hole and the sixth through hole are connected to form the gas channel, which is in the open state; When the fusible component is in the molten state, the elastic element drives the first housing and the second housing to rotate relative to each other, the valve body is in the second position, the first through hole, the second through hole and the fifth through hole are respectively attached to the shell wall of the second housing, and the gas passage is in the closed state.

3. The fire prevention device according to claim 1, characterized in that, The first protrusion is provided with a first extension, and the second protrusion is provided with a second extension; When the valve body is in the second position, the two ends of the fifth through hole are respectively attached to the first extension and the second extension.

4. The fire prevention device according to claim 3, characterized in that, One end of the valve body is provided with a third extension, and the other end of the valve body is provided with a fourth extension. When the valve body is in the second position, the third through hole is in contact with the third extension, and the fourth through hole is in contact with the fourth extension.

5. The fire prevention device according to claim 4, characterized in that, The second housing is provided with at least one limiting part, which is located on the movement path of the valve body; When the valve body is in the second position, the valve body abuts against the limiting part.

6. The fire prevention device according to claim 2, characterized in that, The first housing is provided with a first connecting part and a second connecting part; The first through hole is disposed in the first connecting portion, and the second through hole is disposed in the second connecting portion; The first connecting part and the second connecting part are respectively used to connect to the tubing of the oxygen therapy device or the patient end.

7. The fire prevention device according to claim 1, characterized in that, The gas passage includes a first pipeline interface, a second pipeline interface, and a connecting portion; The connecting portion has an internal cavity; The first pipe interface and the second pipe interface are located at both ends of the connecting portion and are respectively connected to the inner cavity to form the gas channel; The first pipeline interface and the second pipeline interface are symmetrically arranged.

8. The fire prevention device according to claim 7, characterized in that, The fusible component is located in the inner cavity, and the fusible component is clearance-fitted with the cavity wall of the inner cavity.

9. An oxygen therapy device, characterized in that, Includes the fire protection device as described in any one of claims 1-8.

10. A ventilation therapy system, characterized in that, include: The oxygen therapy device according to claim 9.

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