CN219354950U - Breathing pipeline and breathing device - Google Patents

Abstract

The utility model discloses a breathing pipeline and a breathing device, wherein the breathing pipeline comprises a gas pipe, a protection pipe, a heating wire and a wiring terminal; the gas pipe is made of a heat-conducting material, the gas pipe is inserted into the protection pipe, two ends of the gas pipe are respectively inserted and matched with one end corresponding to the protection pipe, and the middle part of the gas pipe and the protection pipe are arranged at intervals; the heating wire is arranged at the position where the gas transmission pipe and the protection pipe are arranged at intervals, extends along the axial direction of the gas transmission pipe and is folded back and forth, the heating wire is also arranged on the periphery of the gas transmission pipe in a surrounding mode, the wiring terminal is arranged on the protection pipe and is exposed from the surface of the protection pipe, and the wiring terminal is electrically connected with the heating wire. Therefore, after the heating wire is electrified, heat can be conducted to the air conveying pipe, and because the contact area between the air conveying pipe and the air in the pipe is large, the heating is uniform when the air in the pipe is heated, and the air which is suddenly cooled and heated by a user can be prevented from being breathed.

Description

Breathing pipeline and breathing device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a breathing pipeline and a breathing device.

Background

In the use of the respirator, after air comes out of the respirator, the air is required to be conveyed to a user for breathing through a longer air conveying pipe, and under the condition of cold weather, a heating wire is arranged on the air conveying pipe for ensuring that the user cannot breathe supercooled air, and the heating wire heats the air in the air conveying pipe to prevent supercooling of the air in the air conveying pipe.

However, when the existing heating wire heats the air in the air delivery pipe, the contact area between the heating wire and the air in the air delivery pipe is limited, which easily results in uneven air heating, so that the user experience is affected by the phenomenon that the user suddenly cold and hot when breathing the air delivered by the air delivery pipe, and thus, improvement is needed.

Disclosure of Invention

The embodiment provides a breathing pipeline, aims at solving the problem that the heating wire heats the air in the air pipe unevenly.

In order to achieve the above purpose, the utility model provides a breathing pipe, which is applied to a breathing device, wherein the breathing pipe comprises a gas pipe, a protection pipe, a heating wire and a wiring terminal; the gas pipe is made of a heat conducting material, the gas pipe is inserted into the protection pipe, two ends of the gas pipe are respectively inserted and matched with one end corresponding to the protection pipe, and the middle part of the gas pipe and the protection pipe are arranged at intervals; the heating wire is arranged at the position where the gas transmission pipe is arranged at intervals with the protection pipe, the heating wire extends along the axial direction of the gas transmission pipe and is folded back and forth, the heating wire is also arranged on the periphery of the gas transmission pipe in a surrounding mode, the wiring terminal is arranged on the protection pipe and is exposed from the surface of the protection pipe, and the wiring terminal is electrically connected with the heating wire.

In some embodiments of the present utility model, the heating wire has a preheating section and a heating section, the heating power of the preheating section is lower than the heating power of the heating section, the preheating section is located adjacent to the air inlet end of the air delivery pipe, and the heating section is located adjacent to the air outlet end of the air delivery pipe.

In some embodiments of the utility model, the preheating section and the heating section are connected in parallel, and the resistance of the heating wire of the preheating section is greater than the resistance of the heating wire of the heating section.

In some embodiments of the present utility model, two ends of the air pipe are respectively connected with one corresponding end of the protection pipe in a sealing manner, and the peripheral wall of the air pipe is also attached to the heating wire.

In some embodiments of the present utility model, the gas delivery pipe includes a pipe body and an end plate, the pipe body extends along a length direction of the gas delivery pipe, the end plate is disposed at an air inlet end of the pipe body, the end plate extends outwards along an outer peripheral wall of the pipe body, and a side of the end plate away from the pipe body is in sealing connection with an inner peripheral wall of the protection pipe; the inner peripheral wall of the protecting tube adjacent to one side of the air outlet end of the tube body is concavely provided with an annular groove extending along the circumferential direction of the protecting tube, and the breathing tube further comprises a sealing element, wherein the sealing element is arranged in the annular groove so as to seal a gap between the tube body and the protecting tube, and the gap is positioned adjacent to one side of the air outlet end of the tube body.

In some embodiments of the utility model, the respiratory tract further comprises a thermal insulation layer laid on the inner peripheral wall of the protective tube.

In some embodiments of the utility model, the outer peripheral wall of one end of the protective tube is formed with an externally threaded section for threaded connection with a threaded hole on the respiratory mask.

In some embodiments of the present utility model, one end of the protection tube is used to communicate with an air outlet connector of the breathing apparatus, the terminal is disposed on an end surface of the protection tube connected to the air outlet connector of the breathing apparatus, and the terminal is used to electrically connect with a power supply terminal on the breathing apparatus.

In some embodiments of the present utility model, the breathing tube further includes a temperature sensor mounted within the protective tube and disposed adjacent to the outlet end of the gas delivery tube, the temperature sensor being electrically connected to the connection terminal by an electrical cable.

The utility model also provides a breathing device, which comprises a breathing machine, a breathing mask and a breathing pipeline as described above; the breathing machine is provided with an air inlet joint and an air outlet joint, the air inlet joint is communicated with an air source pipeline, and the air outlet joint is connected with one end of the protection pipe and is communicated with the air delivery pipe; the breathing mask is connected with one end of the protection tube far away from the air outlet joint and is communicated with the air delivery tube; the breathing machine is provided with a power supply connector, and the power supply connector is electrically connected with a wiring terminal on the protection tube.

According to the utility model, the air conveying pipe made of the heat conducting material is inserted into the protective pipe, the middle part of the air conveying pipe is arranged at intervals with the protective pipe, the heating wire is arranged in the intervals and is electrically connected with the wiring terminal exposed out of the protective pipe, when external equipment supplies power to the wiring terminal, the heating wire can be electrified and heated, at the moment, the heat of the heating wire can be transferred to the air conveying pipe, the air conveying pipe can heat the air passing through the air conveying pipe, and because the air conveying pipe is made of the material with good heat conductivity, and because the contact area between the air conveying pipe and the air in the pipe is large, the air passing through the pipe can be heated more uniformly, and further, the air with sudden cold and sudden heat can be effectively prevented from being breathed by a user.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a cross-sectional view of one embodiment of a breathing tube of the present utility model;

FIG. 2 is a schematic diagram of a respiratory tubing embodiment of the present utility model;

FIG. 3 is a schematic diagram of an embodiment of a heating wire in a breathing tube according to the present utility model;

FIG. 4 is an enlarged view of portion A of FIG. 1;

FIG. 5 is an enlarged view of part B of FIG. 1;

fig. 6 is a schematic structural diagram of an embodiment of a breathing apparatus according to the present utility model.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the technical solutions should be considered that the combination does not exist and is not within the scope of protection claimed by the present utility model.

The breathing pipeline provided by the utility model is applied to a breathing device, and can uniformly heat air passing through the pipeline.

Referring to fig. 1 and 2, the breathing tube 1000 includes a gas tube 100, a protection tube 200, a heating wire 300, and a connection terminal 400; the air pipe 100 is made of a heat conductive material, for example, a metal material with good heat conductivity, such as a copper material, an aluminum alloy material, etc., and, for the convenience of using the breathing pipe 1000, the air pipe 100 is made of a flexible material, for example, a copper corrugated pipe or an aluminum corrugated pipe, so that a user can conveniently take the traction breathing pipe 1000.

Further, the gas pipe 100 is inserted into the protection pipe 200, two ends of the gas pipe 100 are respectively inserted and matched with one end corresponding to the protection pipe 200, and the middle part of the gas pipe 100 and the protection pipe 200 are arranged at intervals; considering that the gas pipe 100 is easy to separate from the protection pipe 200 after being inserted into the protection pipe 200, after two ends of the gas pipe 100 are respectively inserted and matched with corresponding ends of the protection pipe 200, secondary fixing can be performed at corresponding matched positions, for example, secondary fixing is performed by adopting connection modes such as bonding, riveting, clamping and the like, so that the respiratory pipeline 1000 is prevented from falling off from the protection pipe 200 when in use.

The interval between the gas pipe 100 and the protection pipe 200 is used for installing the heating wire 300, and the interval between the gas pipe 100 and the protection pipe 200 can be 3mm, 4mm, 5mm or other numerical intervals, so that the outer diameter of the breathing pipe 1000 is avoided being too large, and the interval between the gas pipe 100 and the protection pipe 200 can be equal to the wire diameter of the heating wire 300, so that the internal structure of the breathing pipe 1000 is compact, and the outer diameter of the breathing pipe 1000 is avoided being too large.

It should be noted that, the protection tube 200 is also made of flexible material, so as to facilitate traction when the user uses the protection tube 200, and at this time, the protection tube 200 may be made of a flexible pipe such as a nylon tube or a plastic bellows.

Referring to fig. 1 and 3, the heating wire 300 extends along the axial direction of the air pipe 100 and is folded back and forth, and the heating wire is further disposed around the outer periphery of the air pipe 100, so that the heating wire 300 is uniformly disposed around the air pipe 100, and after the heating wire 300 is energized and heated, heat can be conducted to the air pipe 100, and the air pipe 100 heats air in the air pipe 100.

In addition, in order to facilitate the installation of the heating wire 300 into the gap between the gas pipe 100 and the protection pipe 200, the heating wire 300 may be pre-installed on the outer peripheral wall of the gas pipe 100 and then installed into the protection pipe 200 together with the gas pipe 100, at this time, there are various installation modes of the heating wire 300 to the outer peripheral wall of the gas pipe 100, for example, the heating wire 300 may be installed on the outer peripheral wall of the gas pipe 100 by means of a clamping connection, and a plurality of clamping pieces are convexly provided on the outer peripheral wall of the gas pipe 100, and each clamping piece clamps the heating wire 300 on the outer peripheral wall of the gas pipe 100; for another example, the heating wire 300 may be mounted on the outer peripheral wall of the gas pipe 100 by bonding, and the heating wire 300 is bonded to the outer peripheral wall of the gas pipe 100 by using high temperature resistant glue; the heating wire 300 may also be pre-mounted to the peripheral wall of the gas delivery tube 100 by other mounting means, not shown.

The heating wire 300 can generate heat after being electrified, so that the heating wire 300 needs to generate a current loop to ensure that the heating wire 300 can generate heat, the wiring terminal 400 is used for being electrically connected with the heating wire 300, and the wiring terminal 400 is electrically connected with external power supply equipment, so that the heating wire 300 can be electrified.

In order to facilitate the electrical connection of the connection terminal 400 with external electrical equipment, the connection terminal 400 is mounted on the protection tube 200 and exposed from the surface of the protection tube 200, and at this time, the connection terminal 400 may be mounted at the middle of the protection tube 200, the connection terminal 400 may be mounted at both ends of the protection tube 200, and the location where the connection terminal 400 is mounted on the protection tube 200 is not particularly limited.

Through the above technical scheme, the air pipe 100 made of the heat conducting material is inserted into the protection pipe 200, the middle part of the air pipe 100 is arranged at intervals with the protection pipe 200, the heating wire 300 is electrically connected with the connecting terminal 400 exposed out of the protection pipe 200, after the external equipment is powered to the connecting terminal 400, the heating wire 300 can be electrified and heated, at the moment, the heat of the heating wire 300 can be transferred to the air pipe 100, the air pipe 100 can heat the air passing through the air pipe 100, and because the air pipe 100 is made of the material with good heat conductivity, and because the contact area between the air pipe 100 and the air in the pipe is large, the air passing through the air pipe can be heated more uniformly, and further, the air with cold and hot air can be effectively prevented from being breathed by a user.

In order to facilitate the user to use the breathing tube 1000 while lying on the bed, the length of the breathing tube 1000 is generally more than one meter, at this time, the length of the breathing tube 1000 is longer, if the heater wire 300 heats the air in the tube at the same temperature, it is difficult to control the temperature of the air reaching the breathing position of the user after heating the breathing tube 1000 under the condition of air flow, in order to better control the temperature in the breathing tube 1000, referring to fig. 3, the heater wire 300 has a preheating section 310 and a heating section 320, the heating power of the preheating section 310 is lower than the heating power of the heating section 320, the preheating section 310 is located adjacent to the air inlet end of the air delivery tube 100, and the heating section 320 is located adjacent to the air outlet end of the air delivery tube 100.

So configured, the preheating section 310 can preheat the air just entering the air delivery pipe 100, so that the temperature of the air after entering the air delivery pipe 100 tends to a relatively stable temperature value, and then the temperature of the air is raised by the heating section 320, so that the temperature of the air delivered to the breathing position of the user is relatively suitable.

Further, in order to ensure that the preheating section 310 and the heating section 320 are not affected by each other when being energized, the preheating section 310 and the heating section 320 are arranged in parallel, in which case the voltages at both ends of the preheating section 310 and the heating section 320 are equal, and in which case the energizing time is equal, it is known that the heat generated by the current passing through the conductor is inversely proportional to the resistance of the conductor according to joule's law, so that the resistance value of the heating wire 300 of the preheating section 310 should be greater than the resistance value of the heating wire 300 of the heating section 320, so that the heating power of the preheating section 310 is lower than the heating power of the heating section 320.

Considering that the respiratory tract 1000 needs to be cleaned and disinfected after use, so that moisture easily enters the interval between the gas pipe 100 and the protection pipe 200 through the gap between the gas pipe 100 and the protection pipe 200, the heating wire 300 arranged at the interval is affected, in order to avoid the moisture from penetrating from the gap between the gas pipe 100 and the protection pipe 200 and affecting the heating wire 300, in this embodiment, two ends of the gas pipe 100 are respectively connected with one end of the protection pipe 200 in a sealing manner, so as to ensure that external moisture cannot penetrate into the gap between the gas pipe 100 and the protection pipe 200 and affect the heating wire 300.

Specifically, there are various connection modes in which two ends of the gas pipe 100 are respectively connected with corresponding ends of the protection pipe 200 in a sealing manner, for example, two ends of the gas pipe 100 may be respectively connected with corresponding ends of the protection pipe 200 in an adhesive manner, and two ends of the gas pipe 100 and corresponding ends of the protection pipe 200 are sealed by glue; the two ends of the gas pipe 100 may be respectively sealed with the corresponding ends of the protection pipe 200 by means of sealing rings, for example, the two ends of the gas pipe 100 are respectively sleeved with sealing rings, and when the two ends of the gas pipe 100 are respectively plugged with the corresponding ends of the protection pipe 200, the two sealing rings can respectively seal the gaps between the two ends of the gas pipe 100 and the corresponding ends of the protection pipe 200; there are many connection modes for sealing and connecting the two ends of the air delivery pipe 100 with the corresponding ends of the protection pipe 200, and this is not shown here.

Referring to fig. 4, in this embodiment, the air pipe 100 includes a pipe body 110 and an end plate 120, the pipe body 110 extends along a length direction of the air pipe 100, the end plate 120 is disposed at an air inlet end of the pipe body 110, the end plate 120 extends outwardly along an outer peripheral wall of the pipe body 110, the end plate 120 may be separately present and connected to the pipe body 110, at this time, the connection mode between the end plate 120 and the pipe body 110 may be a mode of fastening, clamping, welding, etc., the end plate 120 may also be an integrally formed mode with the pipe body 110, and the connection mode between the end plate 120 and the pipe body 110 is not limited herein.

One side of the end plate 120 far away from the pipe body 110 is in sealing connection with the inner peripheral wall of the protection pipe 200, and the connection mode of the one side of the end plate 120 far away from the pipe body 110 and the inner peripheral wall of the protection pipe 200 in sealing connection is consistent with the connection mode of the two ends of the gas pipe 100 in sealing connection with the corresponding ends of the protection pipe 200, which is not described in detail herein.

As an example and not by way of limitation, referring to fig. 5, the inner peripheral wall of the protecting tube 200 adjacent to the air outlet end of the tube body 110 is concavely provided with an annular groove 200a extending circumferentially therealong, and the breathing tube 1000 further comprises a sealing member 500, wherein the sealing member 500 is installed in the annular groove 200a to seal the gap between the tube body 110 and the protecting tube 200 adjacent to the air outlet end of the tube body 110; so arranged, both ends of the gas pipe 100 are in sealing connection with the corresponding ends of the protection pipe 200.

In another embodiment, the outer peripheral wall of the air outlet end of the tube body 110 may be concavely provided with an annular groove 200a extending along the circumferential direction thereof, and the sealing member 500 is installed in the annular groove 200a to seal the gap between the tube body 110 and the protection tube 200 at the side adjacent to the air outlet end of the tube body 110.

It should be noted that, in order to ensure that the heating wire 300 can better transfer heat to the air delivery pipe 100, the peripheral wall of the air delivery pipe 100 needs to be attached to the heating wire 300.

Referring to fig. 1, considering that the heating wire 300 heats the inner wall of the protection tube 200 while being energized, so that the user is likely to feel uncomfortable when grasping the traction breathing tube 1000 when the outer Zhou Biwen of the protection tube 200 is too high, in order to avoid the heat generated by the heating wire 300 being conducted to the protection tube 200, in some embodiments of the present utility model, the breathing tube 1000 further includes an insulation layer 130, the insulation layer 130 is disposed on the inner peripheral wall of the protection tube 200, and the insulation layer 130 is used for blocking the heat generated by the heating wire 300.

The heat insulation layer 130 may be formed by an external heat insulation structure, for example, by performing secondary injection molding on the inner peripheral wall of the protection tube 200, so that the inner peripheral wall of the protection tube 200 is embedded with a layer of plastic with heat insulation effect, and the plastic layer forms the heat insulation layer 130; the insulation layer 130 may be formed by coating a layer of insulation material on the inner circumferential wall of the protection pipe 200, the coating layer forming the insulation layer 130; the insulating layer 130 may be further laid on the inner peripheral wall of the protection pipe 200 by other means, without being particularly limited thereto.

Referring to fig. 2 and 5, air is supplied to a user for breathing through an air outlet end of the breathing tube 1000, and a breathing mask 800 is generally disposed at the air outlet end of the breathing tube 1000, the breathing mask 800 is communicated with the breathing tube 1000, and the user can breathe the air transmitted by the breathing tube 1000 by wearing the breathing mask 800; in order to facilitate connection of the breathing tube 1000 and the breathing mask 800, in some embodiments of the present utility model, an external thread 200b is formed on the peripheral wall of one end of the protection tube 200, and the external thread 200b is used for being screwed with a threaded hole on the breathing mask 800, so that the breathing mask 800 can be separated or connected with the breathing tube 1000 by screwing the breathing mask 800, so that a user can replace and maintain the breathing mask 800 conveniently.

Considering that the connection terminal 400 needs to be connected to an external power supply device, if the connection terminal 400 is disposed on the air outlet end of the protection tube 200, it is inconvenient for the external power supply device to connect the electric cable to the connection terminal 400, for this reason, in order to facilitate the electrical connection between the external power supply device and the connection terminal 400, in this embodiment, one end of the protection tube 200 is used to communicate with the air outlet connector 720 of the breathing apparatus 2000, the connection terminal 400 is disposed on the end surface of the connection terminal 720 of the protection tube 200 connected to the air outlet connector 720 of the breathing apparatus 2000, and the connection terminal 400 is used to electrically connect to the power supply terminal on the breathing apparatus 2000; in this way, the connection terminal 400 is disposed at a side of the protection tube 200 away from the breathing mask 800, so that the connection terminal 400 is conveniently electrically connected with external power supply equipment.

In order to ensure that the user can breathe the gas at an appropriate temperature, in this embodiment, the breathing tube 1000 further includes a temperature sensor 600, and the temperature sensor 600 is installed in the protection tube 200 and disposed adjacent to the gas outlet end of the gas delivery tube 100, and the temperature sensor 600 is electrically connected to the connection terminal 400 through an electric cable. So configured, the temperature sensor 600 can detect the gas temperature at the gas outlet end of the gas pipe 100, and the gas outlet end of the gas pipe 100 is directly connected to the breathing mask 800, so that the temperature of the gas breathed by the user can be detected more truly and directly.

The temperature sensor 600 is electrically connected with the connection terminal 400 through an electric cable, the connection terminal 400 is connected with external equipment, so that the external equipment can conduct temperature adjustment on the heating wire 300 by current with different magnitudes according to temperature data detected by the temperature sensor 600, for example, when the temperature sensor 600 detects that the temperature is lower, the external equipment controls to increase the current so that the heating wire 300 can generate larger heat, and the temperature of air heated in the air pipe 100 is suitable; when the temperature detected by the temperature sensor 600 is low, the external device controls to reduce the energizing current, so that the heating wire 300 reduces the heating force, and the air heated by the air delivery pipe 100 is not overheated.

Referring to fig. 6, the present utility model further provides a breathing apparatus 2000, where the breathing apparatus 2000 includes a ventilator 700, a breathing mask 800, and a breathing tube 1000 as described above;

the specific structure of the breathing tube 1000 refers to the above embodiment, and since the breathing apparatus 2000 adopts all the technical solutions of all the embodiments, at least has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.

The breathing machine 700 is provided with an air inlet joint and an air outlet joint 720, wherein the air inlet joint is communicated with an air source pipeline, and the air outlet joint 720 is connected with one end of the protection pipe 200 and is communicated with the air delivery pipe 100; the gas in the gas source pipeline can be input by an external gas source, at the moment, the gas inlet joint is connected with the external gas source, and the gas is introduced into the respirator 700 from the outside and then is output through the gas outlet joint 720; the air source pipeline can also be input by blowing of a wind motor arranged in the breathing machine 700, at the moment, the air inlet joint is communicated with the external environment, and the wind motor works to reflect air into the breathing machine 700 and then output the air through the air outlet joint 720.

Furthermore, the ventilator 700 is further provided with a controller, a humidifier, a heating device, a filter, a display and other devices, wherein the humidifier, the heating device and the filter are also communicated with the air source pipeline and respectively humidify, heat and filter the air in the air source pipeline, so that a user can keep comfortable and fresh breathing feeling when using the ventilator 700;

the controller is respectively and electrically connected with the humidifier, the heating device, the filter and the display, a user can perform man-machine interaction with the breathing machine 700 through the display, and at the moment, the display can display the working states of all components on the breathing machine 700, such as the flow rate of gas, the temperature and humidity of gas and the like; the controller can control the wind motor to perform blast air supply or cut off air supply, the controller can also control the flow rate of the conveying gas, the controller can also control the humidifier and the heating device to regulate and control the temperature and the humidity of the conveying gas, and the controller can also realize other control functions, which are not listed here one by one.

The breathing mask 800 is connected to the end of the protection tube 200 away from the air outlet connector 720 and is connected to the air delivery tube, so that the user can breathe the air delivered by the breathing machine 700 by wearing the breathing mask 800.

In addition, the ventilator 700 is provided with a power supply connector 710, the power supply connector 710 is electrically connected with the connection terminal 400 on the protection tube 200, specifically, the power supply connector 710 is disposed at the periphery of the air inlet connector, so that when the air inlet end of the air delivery tube 100 is connected with the air outlet connector 720, the power supply connector 710 can be electrically connected with the connection terminal 400, thereby saving the power connection step and facilitating the use of users.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. The utility model provides a breathing pipe, is applied to respiratory device, its characterized in that, breathing pipe includes gas-supply pipe, protection tube, heater strip and binding post; wherein,,

the gas pipe is made of a heat-conducting material, the gas pipe is inserted into the protection pipe, two ends of the gas pipe are respectively inserted and matched with one end corresponding to the protection pipe, and the middle part of the gas pipe and the protection pipe are arranged at intervals;

the heating wire is arranged at the position where the gas transmission pipe is arranged at intervals with the protection pipe, the heating wire extends along the axial direction of the gas transmission pipe and is folded back and forth, the heating wire is also arranged on the periphery of the gas transmission pipe in a surrounding mode, the wiring terminal is arranged on the protection pipe and is exposed from the surface of the protection pipe, and the wiring terminal is electrically connected with the heating wire.

2. The breathing circuit of claim 1, wherein the heater wire has a preheating section and a heating section, wherein the heating power of the preheating section is lower than the heating power setting of the heating section, wherein the preheating section is positioned adjacent to the inlet end of the gas delivery tube, and wherein the heating section is positioned adjacent to the outlet end of the gas delivery tube.

3. The breathing circuit of claim 2 wherein the preheating section and the heating section are connected in parallel, the resistance of the heating wire of the preheating section being greater than the resistance of the heating wire of the heating section.

4. The respiratory tract of claim 1 wherein the ends of the air delivery tube are respectively in sealing connection with the corresponding ends of the protective tube, and the peripheral wall of the air delivery tube is also in fitting arrangement with the heating wire.

5. The respiratory tract of claim 4 wherein the gas delivery conduit comprises a tube body and an end plate, the tube body extending along the length of the gas delivery conduit, the end plate being disposed at the gas inlet end of the tube body, the end plate extending outwardly along the peripheral wall of the tube body, the end plate being sealingly connected to the inner peripheral wall of the protective tube on a side thereof remote from the tube body;

the inner peripheral wall of the protecting tube adjacent to one side of the air outlet end of the tube body is concavely provided with an annular groove extending along the circumferential direction of the protecting tube, and the breathing tube further comprises a sealing element, wherein the sealing element is arranged in the annular groove so as to seal a gap between the tube body and the protecting tube, and the gap is positioned adjacent to one side of the air outlet end of the tube body.

6. The respiratory tract of claim 1 further comprising a thermal insulation layer disposed on an inner peripheral wall of the protective tube.

7. The respiratory tract of claim 1 wherein the peripheral wall of one end of the protective tube is formed with an externally threaded section for threaded connection with a threaded aperture on the respiratory mask.

8. The respiratory tract of claim 1 wherein one end of the protective tube is adapted to communicate with an outlet connector of the respiratory device, the terminal is disposed on an end face of the protective tube that is adapted to connect with the outlet connector of the respiratory device, and the terminal is adapted to electrically connect with a power supply terminal on the respiratory device.

9. The respiratory tract of claim 1 further comprising a temperature sensor mounted within the protective tube and disposed adjacent the outlet end of the gas delivery tube, the temperature sensor being electrically connected to the terminal block by an electrical cable.

10. A respiratory device comprising a ventilator, a respiratory mask, and a respiratory tract according to any one of claims 1 to 9; wherein,,

the breathing machine is provided with an air inlet joint and an air outlet joint, the air inlet joint is communicated with an air source pipeline, and the air outlet joint is connected with one end of the protection pipe and is communicated with the air delivery pipe;

the breathing mask is connected with one end of the protection tube far away from the air outlet joint and is communicated with the air delivery tube;

the breathing machine is provided with a power supply connector, and the power supply connector is electrically connected with a wiring terminal on the protection tube.