A pressure detection device and ventilation equipment

Abstract

A pressure detection device and ventilation equipment, wherein the pressure detection device includes a partition member with a ventilation cavity provided through it in the axial direction and a detection cavity provided in the partition member in the radial direction, the port of the ventilation cavity located on one side of the partition member is used to seal the outlet end of the gas pressurizing device, the port of the ventilation cavity located on the other side of the partition member is used to seal the inlet end of the gas humidifying device, and the detection cavity is connected to the ventilation cavity for installing the pressure detection member. Setting the pressure detection position at the end of the gas pressurizing device can not only reduce the air pressure fluctuations generated by the gas pressurizing device, but also play a role in stabilizing the pressure with the help of the gas humidifying device, so that the pressure detection result is more accurate; at the same time, because the detection position is close to the patient end, it can more truly reflect the patient's airway pressure, and the gas pressurizing device can be regulated according to the pressure feedback, which can avoid causing discomfort to the patient and allow the patient to breathe naturally and comfortably.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a pressure detection device and a ventilation device. Background Art

[0002] Positive Airway Pressure (PAP) generally includes a main unit and a humidifier. The main unit is used to provide positive pressure gas to the patient to eliminate the occurrence of upper airway obstruction by supporting and stabilizing the upper airway. The humidifier is used to heat and humidify the gas produced by the main unit to ensure that the gas entering the patient's airway is more moist and the gas temperature is more suitable for human body temperature. In clinical practice, positive airway pressure machines can be used to treat obstructive sleep apnea hypopnea syndrome (i.e., sleep apnea syndrome or severe snoring) and related diseases.

[0003] Existing positive airway pressure ventilators usually perform gas pressure detection on the main unit end that pressurizes the gas. Since the functional component that plays the role of gas pressurization in the main unit is generally a turbine, the gas pressure often fluctuates when the turbine is working, resulting in low accuracy of the pressure detection result. In addition, regulating the ventilator based on pressure feedback will also have a corresponding impact on the airflow output by the ventilator, which can easily cause discomfort to the patient. Summary of the invention

[0004] The main technical problem solved by the present invention is to provide a pressure detection device and a ventilation device using the pressure detection device to achieve accurate detection of gas pressure.

[0005] According to the first aspect, an embodiment provides a pressure detection device, comprising:

[0006] A partition member is provided with a ventilation cavity extending therethrough in the axial direction, the ventilation cavity having a first port and a second port; the first port is located on one side of the partition member, and is used for the ventilation cavity to be sealed and connected to the outlet end of the gas pressurizing device; the second port is located on the other side of the partition member, and is used for the ventilation cavity to be sealed and connected to the inlet end of the gas humidifying device; and

[0007] A detection cavity is arranged on the partition member along a radial direction, the detection cavity is communicated with the ventilation cavity, and is used for installing a pressure detection member.

[0008] In one embodiment, the ventilation channel comprises:

[0009] a through hole section, which is arranged to pass through the partition member in the axial direction, and a port of the through hole section located on one side of the partition member is configured as a first port; and

[0010] The extension section is distributed around the port of the through hole section on the other side of the partition member and extends in the axial direction. The port of the extension section away from one end of the partition member is constructed as a second port. The detection cavity is connected to the extension section.

[0011] In one embodiment, the detection cavity extends from the edge of the partition member in a radial direction to the ventilation cavity, and the detection cavity has a detection port and an assembly port that are opposite to each other along its extension direction, and the detection port is arranged through the cavity wall of the ventilation cavity; the assembly port is located on the upper side of the detection port, and is used for installing a pressure detection component in the detection cavity.

[0012] In one embodiment, a pressure detection component is further included, and the pressure detection component includes:

[0013] A detection member, used to detect pressure information of the ventilation cavity, the detection member having a detection end, and the detection end of the detection member is inserted into the detection cavity; and

[0014] The first sealing member is installed in the detection cavity, and the first sealing member is used for sealing the detection end of the detection member in the detection cavity.

[0015] In one embodiment, a sink structure is provided in the detection cavity, and the detection end of the detection member and the sink structure are sealed in the form of end face sealing through a first sealing member.

[0016] In one embodiment, the inner diameter of the detection cavity ranges from 1.5 mm to 4.5 mm.

[0017] In one embodiment, the detection cavity and the partition member are integrally formed.

[0018] In one embodiment, a second seal is further included, which is fixedly arranged on the partition member and is used to seal the gap between the first port and the gas outlet end of the gas pressurizing device and / or to seal the gap between the second port and the gas inlet end of the gas humidification device.

[0019] In one embodiment, the second sealing member comprises:

[0020] a connecting portion, fixed to the partition member around the first port or the second port; and

[0021] A sealing portion formed at one end of the connecting portion, the sealing portion having a free end, the free end extending obliquely to the interior of the connecting portion;

[0022] The sealing portion is constructed with an inner diameter that is smaller than or equal to the outer diameter of the air inlet end of the gas humidification device, so that when the air inlet end of the gas humidification device passes through the sealing portion, the free end can be in close contact with the surface of the air inlet end of the gas humidification device; or the sealing portion is constructed with an inner diameter that is smaller than or equal to the outer diameter of the air outlet end of the gas pressurization device, so that when the air outlet end of the gas pressurization device passes through the sealing portion, the free end can be in close contact with the surface of the air outlet end of the gas pressurization device.

[0023] In one embodiment, it also includes:

[0024] a cylinder member, having an open end and a closed end opposite to each other in the axial direction, wherein the closed end is configured as a partition member, and the open end is used for inserting and accommodating at least a part of the gas humidification device in the cylinder member, and enables the second port to communicate with the gas inlet end of the gas humidification device; and

[0025] The base member is fixedly arranged on the closed end side of the cylinder member in the axial direction, and the base member is used to install the gas pressurizing device and enable the gas outlet end of the gas pressurizing device to be connected to the first port.

[0026] According to a second aspect, an embodiment provides a ventilation device, comprising:

[0027] A pressure detection device, using the pressure detection device described in the first aspect;

[0028] A gas pressurizing device is disposed on one side of the partition member, and a gas outlet end of the gas pressurizing device is sealed and connected to the first port; and

[0029] The gas humidification device is arranged on the other side of the partition member, and the gas inlet end of the gas humidification device is sealed and connected with the second port.

[0030] In one embodiment, it further includes a control panel and a display component, wherein the control panel is used to integrate the display component and the pressure detection component into one, and the gas pressurizing device, the gas humidifying device, the display component and the pressure detection component are electrically connected to the control panel respectively.

[0031] The pressure detection device according to the above embodiment includes a partition member with a ventilation cavity provided through it in the axial direction and a detection cavity provided in the partition member in the radial direction. The port of the ventilation cavity located on one side of the partition member is used to seal the outlet end of the gas pressurizing device, and the port of the ventilation cavity located on the other side of the partition member is used to seal the inlet end of the gas humidifying device. The detection cavity is connected to the ventilation cavity and is used to install the pressure detection member. Setting the pressure detection position at the end of the gas pressurizing device can not only reduce the air pressure fluctuation generated by the gas pressurizing device, but also play a role in stabilizing the pressure with the help of the gas humidifying device, so that the pressure detection result is more accurate; at the same time, because the detection position is close to the patient end, it can more truly reflect the patient's airway pressure. By regulating the gas pressurizing device and the like according to this pressure feedback, it can avoid causing discomfort to the patient and allow the patient to breathe naturally and comfortably. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the structural decomposition of a ventilation device according to an embodiment.

[0033] Figure 2 The present invention is a schematic diagram of the alignment relationship between a pressure detection device and a gas humidification device in a ventilation device according to an embodiment.

[0034] Figure 3 The figure is a schematic diagram of the alignment relationship between the pressure detection component and the detection cavity in a pressure detection device according to an embodiment.

[0035] Figure 4 This is a schematic structural diagram of the main part of a pressure detection device according to an embodiment (I).

[0036] Figure 5 This is a schematic structural diagram of the main part of a pressure detection device according to an embodiment (II).

[0037] Figure 6 The figure is a schematic diagram of the structure of a second sealing member in a pressure detection device according to an embodiment.

[0038] Figure 7 The figure is a schematic diagram of the structure of the second sealing member in the pressure detection device of an embodiment when in use.

[0039] In the figure:

[0040] 10. Partition member; 10a. Through-hole section; 10b. Extension section; 20. Detection cavity; 20a. Assembly port; 20b. Detection port; 20c. Sinking platform structure; 30. Pressure detection member; 31. Detection member; 32. First sealing member; 40. Second sealing member; 41. Connecting portion; 42. Sealing portion; 50. Cylinder member; 60. Base member; A. Pressure detection device; B. Gas pressurizing device; C. Gas humidification device; D. Control panel; E. Display member. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are for making the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different situations, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification, this is to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0042] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0043] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0044] The term "axial direction" used herein refers to the centerline direction of the ventilation lumen; accordingly, the term "radial direction" used herein refers to the direction perpendicular to the "axial direction", and can also be understood to refer to the radius or diameter direction of the ventilation lumen.

[0045] See also Figure 1 One embodiment provides a ventilation device, such as a positive airway pressure (PAP) machine that can be used clinically to treat obstructive sleep apnea hypopnea syndrome and related diseases. The ventilation device includes a pressure detection device A, a gas pressurizing device B, a gas humidification device C, a control panel D, a display unit E, and other components (such as a device housing, etc.) that exist as needed.

[0046] See also Figure 1 and Figure 2The gas pressurizing device B includes a turbine, which can continuously provide positive pressure gas to the gas humidifying device C; the gas humidifying device C includes a humidifier for containing a humidifying liquid such as sterile water for injection, and the humidifying liquid in the humidifier can be heated by the humidifier to evaporate the humidifying liquid by heat, so that the humidifying liquid vapor is mixed with the positive pressure gas to form a humidified gas for use by the patient; the pressure detection device A is arranged between the gas pressurizing device B and the gas humidifying device C, and the outlet end of the gas pressurizing device B (specifically, the outlet of the turbine) is connected to the inlet end of the gas humidifying device C (specifically, the inlet of the humidifier) ​​through the pressure detection device A; the pressure detection device A mainly plays the role of detecting the gas pressure in the ventilation device, so as to facilitate the regulation of the gas pressurizing device B and the gas humidifying device C according to the detection result of the pressure detection device A, so as to adjust the pressure, temperature, humidity, etc. of the humidified gas entering the patient's airway, and create conditions for the patient to breathe more comfortably and naturally with the help of the ventilation device.

[0047] See also Figure 1 and Figure 3 The control board D is integrated with a control circuit for regulating the gas pressurizing device B and the gas humidifying device C, and at the same time obtains the detection information fed back by the pressure detection device A by configuring or integrating the corresponding functional circuit, so as to realize the regulation of the gas pressurizing device B and the gas humidifying device C; the display element E can be composed of a display screen, a touch screen, a command switch and other functional components, and mainly plays the role of human-computer interaction; for example, the input of preset instructions, including but not limited to the confirmation of the control command of the ventilation equipment, the setting and switching of the functional mode, etc.; for example, the real-time display of the status of the ventilation equipment, including but not limited to the equipment operation information, pressure information, etc.

[0048] During the use of the ventilation equipment, the gas pressurizing device B is used to continuously generate positive-pressure gas. After the positive-pressure gas enters the gas humidification device C through the pressure detection device A, it is mixed with the humidification liquid vapor to form positive-pressure humidified gas. The humidified gas is discharged from the gas humidification device C and can finally be used by the patient. In this process, the gas pressure in the ventilation equipment is detected in real time from the end of the gas pressurizing device B (or close to the patient end) with the help of the pressure detection device A. On the one hand, the detection result can be closer to the patient's airway pressure, and the gas pressurizing device B and the gas humidification device C can be adjusted according to the pressure detection result to avoid causing discomfort to the patient. On the other hand, the pressure detection position is close to the patient end, which can reduce the interference of the gas pressurizing device B on the pressure detection and ensure that the detection result is more accurate.

[0049] See also Figures 1 to 7This embodiment mainly discloses the application of the pressure detection device A in ventilation equipment such as a positive airway pressure ventilator; of course, the pressure detection device A can also be applied to other types of medical equipment that require heating and humidification of gas, and is not limited to this application. Figure 1 The pressure detection device A comprises a partition member 10 and a detection cavity 20, which are described below respectively.

[0050] See also Figures 2 to 5 The partition member 10 is arranged between the gas pressurizing device B and the gas humidifying device C, and is roughly a plate-like structure. A ventilation cavity is provided on the partition member 10 in an axial direction, and the ventilation cavity has two ports opposite to each other in the axial direction. For the convenience of description, the port of the ventilation cavity facing the gas pressurizing device B is defined as a first port, and the port of the ventilation cavity facing the gas humidifying device C is defined as a second port; wherein, the outlet end of the gas pressurizing device B (specifically, the outlet of the turbine) is connected to the first port in a butt-sealed manner, and the inlet end of the gas humidifying device C (specifically, the inlet of the humidifier) ​​is connected to the second port in a butt-sealed manner, so that the ventilation cavity is equivalent to forming a chamber with a certain volume between the gas pressurizing device B and the gas humidifying device C, and the positive pressure gas output by the gas pressurizing device B can enter the gas humidifying device C through the ventilation cavity, and can finally form humidified gas, and the humidified gas can be delivered to the patient's airway for use after being discharged from the gas humidifying device C.

[0051] See also Figures 2 to 5 The detection cavity 20 is mainly used to provide a structural assembly space for the pressure detection component 30 (such as a pressure detection device such as an air pressure sensor). It is arranged outside or inside the partition 30 in the radial direction and connected to the ventilation cavity. By utilizing the structural characteristics of the detection cavity 20 being connected to the ventilation cavity, the pressure detection component 30 can be used to detect the pressure information of the ventilation cavity (or the chamber between the gas pressurizing device B and the gas humidifying device C) to detect the output pressure of the ventilation device or the airway pressure of the patient. In specific implementation, an air guide tube with a certain hardness (or non-flexibility) can be arranged on the partition 10 in the radial direction, and the tube body space of the conductor tube is used as the detection cavity 20. It can also be understood that the detection cavity 20 and the partition 10 are split structures and assembled as a whole. It is also possible to control the thickness of the partition member 10 in the axial direction and directly open a tubular cavity structure connected with the ventilation cavity in the radial direction inside or on the surface of the partition member 10, and use the tubular cavity structure as the detection cavity 20. It can also be understood that the partition member 10 and the detection cavity 20 are integrally constructed and specifically can be integrally manufactured by processes such as injection molding, 3D printing, etc.

[0052] On the one hand, since the pressure detection position is located at the end of the gas pressurizing device B, which is closer to the patient end; the gas pressurizing device B has limited interference with the pressure at the detection position; at the same time, the gas humidification device C is equivalent to a large-volume container, which can stabilize the pressure and reduce pressure fluctuations; therefore, the pressure fluctuation at the detection position is small, which can ensure the accuracy of the pressure detection result, so that the pressure detection result can be closer to the pressure of the patient's airway, or can more accurately and truly reflect the pressure in the patient's airway; and the output pressure of the gas pressurizing device B, the evaporation efficiency of the humidifying liquid in the gas humidification device C, etc. can be timely adjusted through the feedback of the pressure detection, which can effectively avoid causing discomfort to the patient. On the other hand, the detection cavity 20 with a hard structure is connected to the ventilation cavity, and there is no problem that the detection cavity 20 is deformed and blocked due to the squeezing effect of the gas pressurizing device B or the gas humidification device C, which provides a guarantee for the smooth progress of the pressure detection and the accuracy of the detection.

[0053] In one embodiment, see Figure 1 The ventilation cavity includes a through hole section 10a and an extension section 10b; wherein the through hole section 10a is arranged to penetrate the partition member 10 in the axial direction, and the port of the through hole section 10a located on one side of the partition member 10 (i.e.: the side of the partition member 10 facing the gas pressurizing device B) is constructed or configured as a first port to be able to seal and connect the gas outlet end of the gas pressurizing device B; the extension section 10b surrounds the through hole section 10a and is located on the other side of the partition member 10 (i.e.: the side of the partition member 10 facing the gas humidifying device C). The port of the extension section 10b is set and extends in the axial direction away from the partition member 10; it can also be understood that: the extension section 10b is formed by extending the port periphery of the through-hole section 10a in the axial direction for a certain distance; or the extension section 10b is an independent tube structure, one end of which is fixed on the partition member 10 and connected with the through-hole section 10a coaxially; the port of the extension section 10b away from the partition member 10 is constructed or configured as a second port to be able to seal and connect the air inlet end of the gas humidification device C. Based on the structural form adopted by the ventilation cavity, the detection cavity 20 is arranged on the side of the partition member 10 facing the gas humidification device C, and is connected with the extension section 10b.

[0054] First, by arranging the detection position as far away from the gas pressurizing device B and close to the gas humidifying device C as possible, the influence of pressure fluctuation on the accuracy of the detection result can be reduced, and it can be closer to the patient end, so that the detection result can more truly and accurately reflect the patient's airway pressure. Second, by extending the ventilation cavity from one side of the partition member 10, it is possible to create conditions for reducing the thickness of the partition member 10 in the axial direction, so that the structure of the pressure detection device A, the gas pressurizing device B and the gas humidifying device C after assembly is more compact.

[0055] In one embodiment, see Figures 2 to 5 The detection cavity 20 is integrally formed with the partition member 10, and the detection cavity 20 is inclined downward in the radial direction from the edge of the partition member 10 located at the upper half of the ventilation cavity to the ventilation cavity (for details, please refer to Figure 4 , Figure 4 The dotted line in the figure represents the horizontal dividing line between the upper and lower parts of the partition member 10), so that the detection cavity 20 presents a structural distribution feature of one end being high and the other end being low relative to the partition member 10 (or the ventilation cavity); for the convenience of description, the port of the detection cavity 20 located on the edge side of the partition member 10 is defined as the assembly port 20a, and the port arranged on the cavity wall (specifically, the tube wall of the extension section 10b) that passes through the ventilation cavity and is opposite to the assembly port 20a is defined as the detection port 20b; wherein, the detection end (or sensing end) of the pressure detection member 10 is installed in the detection cavity 20 through the assembly port 20a, and the detection cavity 20 is connected with the cavity space of the ventilation cavity by means of the detection port 20b, so that the positive pressure gas flowing through the ventilation cavity enters the detection cavity 20 through the detection port 20b, and forms gas pressure on the detection end of the pressure detection member 10, so that the pressure detection member 10 can finally obtain the pressure information in the ventilation cavity. When the ventilation device falls over and causes the humidification liquid to flow back into the ventilation cavity, since the detection cavity 20 is arranged in an inclined manner from top to bottom, the humidification liquid is not easy to flow back into the detection cavity 20, thereby ensuring that the pressure detection component 10 will not be contaminated by the humidification liquid, providing a guarantee for the accurate detection of pressure information.

[0056] It should be noted that the description of the pressure detection component 30 introduced in the embodiment of the present application is only for understanding the structural construction and pressure detection principle of the pressure detection device A, and does not mean that the pressure detection component 30 must be a component of the pressure detection device A. That is, in some embodiments, the pressure detection component 30 may be a component of the pressure detection device A; in other embodiments, the pressure detection component 30 is not a component of the pressure detection device A, but a part of the ventilation device, which can be used in conjunction with the pressure detection device A to complete the pressure detection operation.

[0057] In one embodiment, see Figure 1 and Figure 3The pressure detection member 30 includes a detection member 31 and a first sealing member 32; wherein the detection member 31 is a pressure detection element such as a pressure sensor, which includes a main body part and a sensing part, and the sensing part of the detection member 31 is defined as the detection end of the detection member 31; the detection end of the detection member 31 is inserted into the detection cavity 20 via the assembly port 20a of the detection cavity 20, and the first sealing member 32 is arranged between the detection member 31 and the cavity wall of the detection cavity 20 in the form of a sleeve detection member 31; on the one hand, the first sealing member 32 is used to seal the gap between the detection member 31 and the cavity wall of the detection cavity 20 to avoid affecting the detection unlocking due to air leakage, etc.; on the other hand, the detection end of the detection member 31 is firmly fixed in the detection cavity 20 to prevent the detection end of the detection member 31 from shaking or detaching from the detection cavity 20 due to the action of air pressure. In a specific implementation, the display circuit of the display component E, the main body of the detection component 31, the control circuit of the gas pressurizing device B and the gas humidifying device C, and other functional circuits (or functional devices) can be integrated on the control board D at the same time, thereby avoiding the adverse effect of the scattered arrangement of functional accessories on the overall structural layout of the ventilation equipment, and effectively enhancing the degree of integration of the ventilation equipment, making the structure of the ventilation equipment simpler and more compact.

[0058] Generally, a smaller inner diameter of the detection cavity 20 will increase the air resistance, while a larger inner diameter of the detection cavity 20 will easily form a dead space; large air resistance or the presence of a dead space will cause a lag in pressure detection, which is not conducive to timely, rapid and accurate feedback of pressure information. In one embodiment, the inner diameter of the detection cavity 20 can be selected within the range of 1.5mm-4.5mm; based on the structural structure of the existing ventilation equipment and the selection of the pressure detection component 30, the inner diameter of the detection cavity 20 is generally set to 3mm, which can achieve timely, rapid and accurate detection and feedback of pressure.

[0059] In one embodiment, see Figure 3 and Figure 5 A sinker structure 20c is provided at a position adjacent to the assembly port 20a in the detection cavity 20; when the detection cavity 20 adopts a structural form with a constant inner diameter, the sinker structure 20c can be understood as a convex ring structure formed by protruding from the cavity wall of the detection cavity 20; when the detection cavity 20 adopts a variable diameter structural form, the sinker structure 20c can be understood as a step surface naturally formed at the variable diameter position of the detection cavity 20; correspondingly, the first sealing member 32 adopts an end face sealing member, such as the common DO type sealing ring, DF type sealing ring, etc., with the help of the first sealing member 32, an end face sealing structure can be established between the detection end of the detection member 31 and the sinker structure 20c, which can effectively improve the sealing installation effect of the detection member 31.

[0060] In one embodiment, see Figure 2 , Figure 3 , Figure 6 and Figure 7 , the pressure detection device A also includes a second seal 40, which is mainly used for sealing the ventilation channel with the gas pressurizing device B or the gas humidifying device C, so that the positive pressure gas generated by the gas pressurizing device B will not leak when it is transported to the gas humidifying device C through the ventilation channel. The second seal 40 can be fixed on the partition member 10; for example, it is set on the inner wall of the first port (or the second port) of the ventilation channel; for example, it is set on the side of the partition member 10 and distributed around the first port (or the second port) of the ventilation channel. The second seal 40 can also be pre-set and fixed on the outlet end of the gas pressurizing device B (or the inlet end of the gas pressurizing device B). When the outlet end of the gas pressurizing device B is inserted into the first port or the inlet end of the gas humidifying device C is inserted into the second port, the gap of the plug-in part can be directly sealed with the help of the second seal 40.

[0061] In one embodiment, see Figure 6 and Figure 7 The second sealing member 40 is made of elastically deformable rubber-plastic material, and includes a connecting portion 41 and a sealing portion 42; wherein the connecting portion 41 is fixed on the side of the partition member 10 by bonding, welding, clamping, etc., and is distributed around the first port or the second port of the ventilation cavity; if the connecting portion 41 adopts a sleeve-shaped structure, it is fixed on the outside of the extension section 10b by bonding. The sealing portion 42 is formed at one end of the connecting portion 41 (i.e., the end away from the partition member 10), and the sealing portion 42 adopts a ring-shaped structure, the outer peripheral edge of which is connected to the connecting portion 41 as a whole, and the main body can be regarded as the free end of the sealing portion 42, and the free end of the sealing portion 42 extends obliquely to the inside of the connecting portion 41, so that the sealing portion 42 in the connecting portion 41 is equivalent to presenting a frustum-shaped axial cross-section shape.

[0062] In specific implementation, taking the first sealing member 40 used for sealing the gas humidification device C and the ventilation cavity as an example, the connecting portion 41 can be sleeved and fixed on the extension section 10b of the ventilation cavity, so that the sealing portion 42 is coaxially opposite to the second port of the ventilation cavity, and the inner diameter of the sealing portion 42 is set to be less than or equal to the outer diameter of the inlet end of the gas humidification device C; in this way, please refer to Figure 7 When the air inlet end of the gas humidification device C passes through the sealing portion 42 and is inserted into the extension section 10b via the second port, the sealing portion 42 can be in close contact with the surface of the air inlet end of the gas humidification device C, thereby forming a tight sealing effect. Based on the same principle, when the second sealing member 40 is used for sealing the gas pressurizing device B and the ventilation channel, the inner diameter of the sealing portion 42 is set to be less than or equal to the outer diameter of the air outlet end of the gas pressurizing device B.

[0063] In one embodiment, see Figures 1 to 5 The pressure detection device A also includes a barrel member 50 and a base member 60; wherein the barrel member 50 is used to position and fix the gas humidification device C, and is roughly a straight cylindrical structure with a single-end opening or a single-side opening. For the convenience of description, the open end of the barrel member 50 is defined as the open end of the barrel member 50, and the end opposite to the open end in the axial direction is defined as the closed end of the barrel member 50; the closed end of the barrel member 50 is constructed or configured as a partition member 10; using the open end of the barrel member 50, a part of the gas humidification device C (specifically the part where its air inlet end is located) can be inserted and accommodated in the barrel member 50 in a detachable manner, and the second port of the ventilation cavity can be aligned and connected to the air inlet end of the gas humidification device C, so that the pressure detection device A and the gas humidification device C are assembled together. The base member 60 is mainly used for positioning and fixing the gas pressurizing device B. It is roughly a plate-shaped structure and is arranged along the axial direction on the closed end side of the cylinder member 50 (that is, on the other side of the partition member 10). The base member 60 can be used to position and fix the gas pressurizing device B on one side of the partition member 10 in a detachable manner, and the gas outlet end of the gas pressurizing device B is aligned with the first port of the ventilation cavity, thereby realizing the combined assembly of the pressure detection device A and the gas humidification device C.

[0064] In specific implementation, based on the selection of manufacturing materials, the cylinder member 50 (together with the partition member 10) and the base member 60 can be integrally formed by injection molding, 3D printing and other process methods; thereby, the pressure detection device A can be used as an installation carrier for the gas humidification device C and the gas pressurizing device, and not only can the combination and assembly of the three be quickly completed, such as when the aforementioned second sealing member 40 is arranged on the partition member 10, when the gas humidification device C is inserted into the cylinder member 50, its air inlet end can be aligned and pass through the second sealing member 40 and finally enter the second port of the ventilation cavity, thereby realizing the rapid sealing connection between its air inlet end and the ventilation cavity; the three can also be regarded as a complete structure, creating favorable conditions for the rapid assembly of the ventilation equipment and the disassembly and maintenance of the components.

[0065] In another embodiment, the cylinder member 50 may also be a straight cylindrical structure with double-ended openings, and the partition member 10 is set to cover one of the ports of the cylinder member 50; in this case, the partition member 10, the cylinder member 50 and the base member 60 are assembled to form the main structure of the pressure detection device A. In other embodiments, without considering the difficulty or complexity of the combination of the associated device accessories, the cylinder member 50 and / or the base member 60 may be omitted, and the gas pressurizing device B and the gas humidifying device C may be directly positioned and fixed on both sides of the partition member 10, and the two may be sealed and connected to the ports of the ventilation channel respectively.

[0066] The above specific examples are used to illustrate the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the art, according to the concept of the present invention, some simple deductions, modifications or substitutions can be made.

Claims

1. A ventilation device, It is characterized in that It includes a gas pressurizing device, a gas humidifying device and a pressure detecting device, wherein the pressure detecting device includes a pressure detecting member and an integrally formed partition member; wherein: The partition member is arranged between the gas pressurizing device and the gas humidifying device, and the partition member is provided with a ventilation cavity and a detection cavity; The ventilation cavity passes through the partition member in the axial direction, and the ventilation cavity has a first port and a second port opposite to each other in the axial direction; the first port is located on a side of the partition member facing the gas pressurizing device, and the gas outlet end of the gas pressurizing device is sealed and connected to the ventilation cavity through the first port; the second port is located on a side of the partition member facing the gas humidifying device, and the gas inlet end of the gas humidifying device is sealed and connected to the ventilation cavity through the second port; The detection cavity extends from the edge of the partition member to the ventilation cavity in a radial direction to communicate with the ventilation cavity; The pressure detection member comprises a detection member for detecting pressure information of the ventilation cavity, wherein the detection member has a detection end, and the detection end of the detection member is inserted into the detection cavity.

2. The ventilation device according to claim 1, It is characterized in that The ventilation cavity comprises: a through hole section, which is arranged to pass through the partition member in the axial direction, and a port of the through hole section located on one side of the partition member is configured as a first port; and The extension section is distributed around the port of the through hole section on the other side of the partition member and extends in the axial direction. The port of the extension section away from one end of the partition member is constructed as a second port. The detection cavity is connected to the extension section.

3. The ventilation device according to claim 1, It is characterized in that The detection cavity has a detection port and an assembly port which are opposite to each other along its extension direction. The detection port is arranged through the cavity wall of the ventilation cavity. The assembly port is located on the upper side of the detection port and is used for installing a pressure detection component in the detection cavity.

4. The ventilation device according to claim 1, It is characterized in that The pressure detection component further includes a first sealing component; the first sealing component is installed in the detection cavity and is used to seal the detection end of the detection component in the detection cavity.

5. The ventilation device according to claim 4, It is characterized in that A sink structure is provided in the detection cavity, and the detection end of the detection member and the sink structure are sealed in the form of end face sealing through a first sealing member.

6. The ventilation device according to claim 1, It is characterized in that The inner diameter of the detection cavity ranges from 1.5 mm to 4.5 mm.

7. The ventilation device according to claim 1, It is characterized in that The pressure detection device also includes a second seal, which is fixedly arranged on the partition member and is used to seal the gap between the first port and the gas outlet end of the gas pressurizing device and / or to seal the gap between the second port and the gas inlet end of the gas humidification device.

8. The ventilation device according to claim 7, It is characterized in that The second sealing member comprises: a connecting portion, fixed to the partition member around the first port or the second port; and A sealing portion formed at one end of the connecting portion, the sealing portion having a free end, the free end extending obliquely to the interior of the connecting portion; The sealing portion is constructed with an inner diameter that is smaller than or equal to the outer diameter of the air inlet end of the gas humidification device, so that when the air inlet end of the gas humidification device passes through the sealing portion, the free end can be in close contact with the surface of the air inlet end of the gas humidification device; or the sealing portion is constructed with an inner diameter that is smaller than or equal to the outer diameter of the air outlet end of the gas pressurization device, so that when the air outlet end of the gas pressurization device passes through the sealing portion, the free end can be in close contact with the surface of the air outlet end of the gas pressurization device.

9. The ventilation device according to claim 1, It is characterized in that The pressure detection device also includes: a cylinder member, having an open end and a closed end opposite to each other in the axial direction, wherein the closed end is configured as a partition member, and the open end is used for inserting and accommodating at least a part of the gas humidification device in the cylinder member, and enables the second port to communicate with the gas inlet end of the gas humidification device; and The base member is fixedly arranged on the closed end side of the cylinder member in the axial direction, and the base member is used to install the gas pressurizing device and enable the gas outlet end of the gas pressurizing device to be connected to the first port.

10. The ventilation device according to claim 1, It is characterized in that It also includes a control panel and a display component, wherein the control panel is used to integrate the display component and the pressure detection component into one, and the gas pressurizing device, the gas humidifying device, the display component and the pressure detection component are electrically connected to the control panel respectively.

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