Breathing machine and fan assembly thereof

Abstract

The fan assembly comprises an outer shell, a fan and an air inlet pipeline, the outer shell comprises an upper shell body, a lower shell body and a cavity structure, the lower shell body and the upper shell body are provided with an air inlet and an air outlet channel which are used for air circulation respectively, and the cavity structure is provided with a containing space and located in the outer shell; the fan is arranged in the cavity structure and comprises an air suction port and an exhaust port communicated with the air outlet channel; the air inlet pipeline is arranged in the cavity structure, the air inlet pipeline is detachably communicated with the air inlet and the air suction port, the air inlet pipeline comprises a first bent pipe and a second bent pipe which are communicated with each other and are arranged up and down, an air circulation channel is effectively prolonged, damping and noise reduction can be better achieved, the air inlet pipeline is detachably communicated with the air inlet and the air suction port, and the service life of the air inlet pipeline is prolonged. In the subsequent maintenance and repair process, the air inlet pipeline can be independently disassembled and detected, and the problems that the shock absorption and noise reduction effects of an air inlet channel are poor and the maintenance difficulty is high can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a ventilator and a fan component thereof. Background Art

[0002] In modern clinical medicine, ventilators, as an effective means of artificially replacing spontaneous ventilation, have been widely used in respiratory failure caused by various reasons, anesthesia respiratory management during major surgery, respiratory support therapy and emergency resuscitation, and they occupy a very important position in the field of modern medicine. Ventilators are vital medical devices that can prevent and treat respiratory failure, reduce complications, and save and prolong patients' lives. Ventilators involve delivering pressurized breathable gas, such as air, oxygen-enriched air or oxygen, to the patient's airway through a catheter and a patient interface device.

[0003] In existing respiratory equipment, the air intake channel is usually integrated with the fan. As the core component of the ventilator, the fan assembly usually has high requirements for airtightness and reducing vibration and noise generated during operation. Usually, the shock absorption and noise reduction effect of the air intake path is poor. In order to reduce noise and vibration, the air intake path is lengthened. However, this lengthening method makes the internal structure of the integrated fan assembly more complicated, increasing the difficulty and cost of production and subsequent maintenance. The technical level requirements for production and maintenance employees are also high, which invisibly increases a lot of production and maintenance costs.

[0004] Therefore, how to solve the problem of poor vibration reduction and noise reduction effect of the air intake path and high maintenance difficulty is a technical problem that technical personnel in this field currently need to solve. Utility Model Content

[0005] The utility model aims to provide a ventilator and a fan assembly thereof, which can solve the problems of poor vibration reduction and noise reduction effect of the air intake path and high maintenance difficulty.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A fan assembly, comprising:

[0008] The housing comprises an upper housing, a lower housing and a cavity structure, wherein the lower housing and the upper housing are respectively provided with an air inlet and an air outlet for gas circulation, and the cavity structure has a containing space and is located inside the housing;

[0009] A fan is arranged in the cavity structure, and comprises an air intake port and an air exhaust port connected to the air outlet channel;

[0010] The air intake duct is arranged in the cavity structure and is detachably connected to the air inlet and the air suction port. The air intake duct includes a first elbow and a second elbow which are connected to each other and arranged up and down to allow the gas to flow to the fan.

[0011] Preferably, the air intake duct further comprises:

[0012] A first connecting piece, used for connecting the first elbow and the air inlet;

[0013] The second connecting piece is used to connect the first curved pipe and the second curved pipe. The second connecting piece is located at an end of the first curved pipe away from the first connecting piece.

[0014] Preferably, the air inlet is provided with a port extending outward, the first connecting member is provided with a connecting portion and a limiting member, the connecting portion can be passed through the port to connect the first bent pipe, the limiting member is used to clamp with the outside of the port, and the limiting member abuts against the outer wall of the lower shell.

[0015] Preferably, the first bent pipe is provided with a limiting device capable of abutting against the inner side of the air inlet to limit the first bent pipe from moving to the outside of the port.

[0016] Preferably, a slot and a buckle are respectively provided on one side of the first curved pipe and the second curved pipe close to each other, and the slot and the buckle are matched and connected to relatively fix the first curved pipe and the second curved pipe.

[0017] Preferably, the first connecting member, the first elbow, the second connecting member and the second elbow are connected in sequence and are interference fit, the first connecting member and the second connecting member are both made of elastic materials, and the second connecting member is provided with an arc-shaped pipe for gas to flow from the first elbow to the second elbow.

[0018] Preferably, the cavity structure is further provided with a first shock absorbing member and a second shock absorbing member, and the first shock absorbing member and the second shock absorbing member are respectively located on both sides of the fan so that the fan and the casing are spaced apart from each other.

[0019] Preferably, the second shock absorbing member is provided with a limiting protrusion in the circumferential direction, and the lower shell is provided with a limiting groove capable of engaging with the limiting protrusion to limit the second shock absorbing member from rotating along its own axis.

[0020] Preferably, a pressure plate is provided between the exhaust port and the air outlet channel to prevent the gas from flowing out to the cavity structure, and an air flow monitor is provided at the tail end of the air outlet channel to detect the gas flow rate of the air outlet in real time.

[0021] A ventilator is provided with the above-mentioned fan assembly.

[0022] Compared with the above-mentioned background technology, the fan assembly provided by the utility model includes a shell, a fan and an air inlet duct, the shell includes an upper shell, a lower shell and a cavity structure, the lower shell and the upper shell are respectively provided with an air inlet and an air outlet channel for gas circulation, the cavity structure has a accommodating space and is located inside the shell; the fan is arranged in the cavity structure, including an air intake port and an exhaust port connected to the air outlet channel; the air inlet duct is arranged in the cavity structure, and the air inlet duct is detachably connected to the air inlet and the air intake port, and the air inlet duct includes a first bend pipe and a second bend pipe which are connected to each other and arranged up and down to allow the gas to flow to the fan.

[0023] Specifically, the air intake duct is independently arranged in the cavity structure from the outer casing and the fan. The first bend pipe and the second bend pipe, which are interconnected and arranged up and down, effectively extend the gas flow channel, which can better reduce shock and noise. The air intake duct is detachably connected to the air inlet and the air intake. During the production and assembly of the fan assembly, the production cost can be effectively reduced, the assembly process can be simplified, and it is more suitable for large-scale assembly line production. During the maintenance and repair of subsequent products, the air intake duct can be separately disassembled and inspected to reduce the maintenance cost and difficulty. Such a setting can solve the problems of poor shock and noise reduction effect of the air intake path and high maintenance difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0025] Figure 1 A schematic structural diagram of a fan assembly provided in an embodiment of the utility model.

[0026] in:

[0027] 100-housing, 110-upper housing, 111-air outlet channel, 112-air outlet, 120-lower housing, 121-air inlet, 122-port, 123-limiting groove, 130-cavity structure;

[0028] 200- fan, 210- exhaust port;

[0029] 310 - first curved pipe, 320 - second curved pipe, 330 - first connecting piece, 331 - connecting portion, 332 - limiting piece, 340 - second connecting piece;

[0030] 400-first shock absorbing member;

[0031] 500-second shock absorbing member, 510-limiting protrusion;

[0032] 600-pressing plate;

[0033] 700 - Airflow Monitor. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] In the description of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside", "top" and "bottom" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the position or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation of the present invention.

[0037] The utility model aims to provide a ventilator and a fan assembly thereof, which can solve the problems of poor vibration reduction and noise reduction effect of the air intake path and high maintenance difficulty.

[0038] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0039] See also Figure 1 , this embodiment provides a fan assembly, including a housing 100, a fan 200 and an air intake duct.

[0040] The housing 100 includes an upper housing 110 , a lower housing 120 and a cavity structure 130 . The lower housing 120 and the upper housing 110 are respectively provided with an air inlet 121 and an air outlet channel 111 for gas circulation. The cavity structure 130 has a containing space and is located inside the housing 100 .

[0041] It can be understood that the upper shell 110 and the lower shell 120 are correspondingly provided with screw holes for the fixing parts to pass through, so that the upper shell 110 and the lower shell 120 connected by the fixing parts form a cavity structure 130. The fixing parts are preferably screws. In addition, the type and quantity of the fixing parts can be adjusted according to actual conditions as long as the above-mentioned purpose can be achieved.

[0042] The fan 200 is disposed in the cavity structure 130 , and includes an air intake port and an air outlet 210 connected to the air outlet channel 111 .

[0043] The air intake duct is disposed in the cavity structure 130 and is detachably connected to the air inlet 121 and the air suction port. The air intake duct includes a first bend pipe 310 and a second bend pipe 320 that are interconnected and disposed up and down to allow gas to flow to the fan 200 .

[0044] It is understandable that the first elbow 310 and the second elbow 320 are preferably elbows of the same shape, and the shapes of the first elbow 310 and the second elbow 320 can be any shape such as "S" shape, "L" shape, arc shape, etc. In this embodiment, the first elbow 310 and the second elbow 320 are preferably "L" shaped. By arranging the first elbow 310 and the second elbow 320 of the same shape up and down, the structure of the air intake duct can be made more compact, the occupied space can be reduced, and the gas channel can be effectively extended in a limited space, saving the internal space of the housing 100 and improving the space utilization.

[0045] Specifically, the air intake duct is independently arranged in the cavity structure 130 from the outer shell 100 and the fan 200. By means of the first bend pipe 310 and the second bend pipe 320 which are interconnected and arranged up and down, the gas flow channel is effectively extended, which can better reduce shock and noise. The air intake duct is detachably connected to the air inlet 121 and the air intake port. During the production and assembly process of the fan component, the production cost can be effectively reduced, the assembly process can be simplified, and it is more suitable for large-scale assembly line production mode. During the maintenance and repair of subsequent products, the air intake duct can be separately disassembled and inspected to reduce the maintenance cost and difficulty. Such a setting can solve the problems of poor shock and noise reduction effect of the air intake path and high maintenance difficulty.

[0046] Preferably, the air intake duct further includes a first connecting piece 330 and a second connecting piece 340 .

[0047] The first connecting member 330 is used to connect the first curved pipe 310 and the air inlet 121 .

[0048] It is understandable that the first connecting member 330 connects the first curved pipe 310 and the air inlet 121 respectively, so that the first curved pipe 310 is fixed relative to the air inlet 121 while the gas can flow along the air inlet 121 to the first curved pipe 310 .

[0049] The second connecting member 340 is used to connect the first curved pipe 310 and the second curved pipe 320 . The second connecting member 340 is located at one end of the first curved pipe 310 away from the first connecting member 330 .

[0050] It should be noted that there are two parallel openings on one side of the second connecting piece 340, and the two openings are connected by a U-shaped tubular structure with a central hole, so that air can pass through. The shape of the opening is the same as the end shape of the first bend pipe 310 and the second bend pipe 320, so that the second connecting piece 340 connects the first bend pipe 310 and the second bend pipe 320.

[0051] Preferably, the air inlet 121 is provided with a port 122 extending outward, and the first connecting member 330 is provided with a connecting portion 331 and a limiting member 332, the connecting portion 331 can be passed through the port 122 to connect the first bent pipe 310, the limiting member 332 is used to clamp with the outside of the port 122, and the limiting member 332 abuts against the outer wall of the lower shell 120.

[0052] In this embodiment, the first connecting member 330 is preferably a stepped ring structure provided with a connecting portion 331 and a limiting member 332, the narrow end of which is the connecting portion 331 having a size smaller than the size of the air inlet 121, which is used to connect with the first bent pipe 310 after passing through the port 122; the wide end is the limiting member 332 having a size larger than the size of the air inlet 121, which can abut against the outer wall of the lower shell 120, thereby limiting the movement of the first connecting member 330 relative to the air inlet 121.

[0053] Preferably, the first curved pipe 310 is provided with a limiting device capable of abutting against the inner side of the air inlet 121 to limit the first curved pipe 310 from moving to the outside of the port 122 .

[0054] In this embodiment, in order to limit the relative position of the first bend pipe 310, the first bend pipe 310 is also provided with a limiting device protruding from the surface, and the limiting device can abut against the inner side surface of the air inlet 121 to limit the relative position of the air inlet 121 and the first bend pipe 310, thereby preventing the first bend pipe 310 from extending out of the air inlet 121; in addition, the limiting device can also be configured to abut against the first connecting member 330 to limit the relative position of the first connecting member 330 and the first bend pipe 310, thereby preventing the first connecting member 330 from being inserted into the first bend pipe 310 for too long, thereby preventing the first bend pipe 310 from extending out of the air inlet 121.

[0055] The limiting device may be a limiting block, a limiting edge, etc., which is not specifically limited here, as long as it can achieve the above-mentioned purpose.

[0056] Preferably, a slot and a buckle are respectively provided on one side of the first curved pipe 310 and the second curved pipe 320 that are close to each other, and the slot and the buckle are matched and connected to relatively fix the first curved pipe 310 and the second curved pipe 320.

[0057] A slot is provided on one side of the first curved pipe 310 close to the second curved pipe 320 , and a buckle that can be engaged with the slot is correspondingly provided on the second curved pipe 320 , so that the first curved pipe 310 and the second curved pipe 320 can be relatively fixed after installation.

[0058] Among them, fixing holes can also be set on the side where the first bend pipe 310 and the second bend pipe 320 are close to each other, and fasteners can be passed through them to fix them. In addition, a detachable connection structure, such as a threaded connection, can also be set to further enhance the overall stability of the intake duct.

[0059] Preferably, the first connecting member 330, the first elbow 310, the second connecting member 340 and the second elbow 320 are connected in sequence and are all interference fit, the first connecting member 330 and the second connecting member 340 are both made of elastic materials, and the second connecting member 340 is provided with an arc-shaped pipe for gas to flow from the first elbow 310 to the second elbow 320.

[0060] In this embodiment, the first bend pipe 310 and the second bend pipe 320 are preferably composed of hard materials, and the first connecting piece 330 and the second connecting piece 340 are both elastic materials. This material selection method can not only ensure the sealing of the connection between components under the premise of the overall structural stability of the intake duct, but also use the elastic material of the second connecting piece 340 to absorb part of the noise when the airflow changes its direction at a large angle, thereby achieving a better noise reduction effect.

[0061] During assembly, the first end of the first elbow 310 is inserted into one opening of the second connecting member 340, and the first end of the second elbow 320 is inserted into the other opening of the second connecting member 340. The first elbow 310 and the second elbow 320 are then fixed together through the above-mentioned slots and buckles, and then the first elbow 310 is fixed to the bottom wall of the inner cavity of the lower shell 120. At this time, the end surface of the second end of the first elbow 310 and the air inlet 121 can be overlapped or located on the same axis, and the first connecting member 330 is passed through the air inlet 121 and sleeved on the second end of the first elbow 310, and the matching mode is preferably interference fit.

[0062] The first connecting member 330 can abut against the outer surface of the air inlet 121, and it will produce elastic deformation under pressure, which plays the role of positioning, sealing and shock absorption. After the assembly and fixation are completed, the fan assembly will squeeze the first connecting member 330 when it is installed, so as to achieve the sealing between the first connecting member 330 and the air inlet 121 and achieve the purpose of shock absorption at the same time.

[0063] Preferably, the cavity structure 130 is further provided with a first shock absorbing member 400 and a second shock absorbing member 500 , and the first shock absorbing member 400 and the second shock absorbing member 500 are respectively located on both sides of the fan 200 , so that the fan 200 and the housing 100 are spaced apart from each other.

[0064] In this embodiment, the fan 200 itself does not contact the housing 100. The fan 200 contacts the upper housing 110 through the first shock absorber 400 and contacts the lower housing 120 through the second shock absorber 500. The vibration generated when the fan 200 is working can be absorbed by the first shock absorber 400 and the second shock absorber 500 to avoid transmitting the vibration to the housing 100. At the same time, the shock absorbing component can also absorb the noise generated by the vibration when the fan 200 is working. The specific structure of the first shock absorber 400 and the second shock absorber 500 is not limited, so as to achieve the purpose of avoiding the fan 200 from contacting the housing 100.

[0065] Preferably, the second shock absorbing member 500 is provided with a limiting protrusion 510 in the circumferential direction, and the lower shell 120 is provided with a limiting groove 123 capable of engaging with the limiting protrusion 510 to limit the second shock absorbing member 500 from rotating along its own axis.

[0066] In order to enhance the stability of the fan 200, a plurality of limiting protrusions 510 are further provided on the second shock absorber 500. The limiting protrusions 510 are arranged circumferentially along the second shock absorber 500 and are used in conjunction with the limiting grooves 123 arranged on the lower shell 120 to prevent the second shock absorber 500 from rotating circumferentially due to the vibration of the fan 200 during operation.

[0067] Preferably, a pressure plate 600 is provided between the exhaust port 210 and the outlet channel 111 to prevent the gas from flowing out to the cavity structure 130 , and an air flow monitor 700 is provided at the tail end of the outlet channel 111 to detect the gas flow rate of the outlet port 112 in real time.

[0068] It is understandable that the fan assembly further includes a pressing plate 600 disposed between the exhaust port 210 and the air outlet passage 111, and a third connecting member is disposed at one end of the pressing plate 600, and the third connecting member is connected to the exhaust port 210 of the fan 200. By providing the pressing plate 600, the exhaust port 210 of the fan 200 is sealed and connected to the air outlet passage 111 of the fan assembly, and at the same time, the fan 200 can be fixed to a certain extent.

[0069] In addition, a gas flow monitor 700 for detecting the gas flow rate of the gas outlet 112 in real time is provided at the tail end of the gas outlet channel 111 .

[0070] This embodiment also includes a ventilator, which is equipped with the above-mentioned fan assembly and also has the beneficial effects of the above-mentioned fan assembly.

[0071] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0072] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0073] The above is a detailed introduction to the embodiments provided by the utility model. This article uses specific examples to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A fan assembly, characterized in that: include: A housing (100) comprising an upper housing (110), a lower housing (120) and a cavity structure (130), wherein the lower housing (120) and the upper housing (110) are respectively provided with an air inlet (121) and an air outlet channel (111) for gas circulation, and the cavity structure (130) has a containing space and is located inside the housing (100); A fan (200) is disposed in the cavity structure (130), comprising an air intake port and an air outlet (210) connected to the air outlet channel (111); An air intake duct is arranged in the cavity structure (130), and the air intake duct is detachably connected to the air inlet (121) and the air suction port, and the air intake duct includes a first bend pipe (310) and a second bend pipe (320) which are interconnected and arranged up and down, so that the gas can flow to the fan (200).

2. The fan assembly according to claim 1, characterized in that: The air intake duct also includes: A first connecting member (330) for connecting the first curved pipe (310) and the air inlet (121); The second connecting member (340) is used to connect the first curved pipe (310) and the second curved pipe (320), and the second connecting member (340) is located at an end of the first curved pipe (310) away from the first connecting member (330).

3. The fan assembly according to claim 2, characterized in that: The air inlet (121) is provided with a port (122) extending outward, and the first connecting member (330) is provided with a connecting portion (331) and a limiting member (332), wherein the connecting portion (331) can be passed through the port (122) to connect the first curved pipe (310), and the limiting member (332) is used for clamping with the outside of the port (122), and the limiting member (332) abuts against the outer wall of the lower shell (120).

4. The fan assembly according to claim 3, characterized in that: The first curved pipe (310) is provided with a limiting device capable of abutting against the inner side of the air inlet (121) so as to limit the first curved pipe (310) from moving to the outside of the port (122).

5. The fan assembly according to claim 1, characterized in that: A clamping groove and a clamping buckle are respectively provided on the sides of the first curved pipe (310) and the second curved pipe (320) that are close to each other, and the clamping groove and the clamping buckle are matched and connected to relatively fix the first curved pipe (310) and the second curved pipe (320).

6. The fan assembly according to claim 2, characterized in that: The first connecting piece (330), the first curved pipe (310), the second connecting piece (340) and the second curved pipe (320) are connected in sequence and are all interference fit; the first connecting piece (330) and the second connecting piece (340) are both made of elastic materials; the second connecting piece (340) is provided with an arc-shaped pipe for the gas to flow through the first curved pipe (310) to the second curved pipe (320).

7. The fan assembly according to claim 1, characterized in that: The cavity structure (130) is further provided with a first shock absorbing member (400) and a second shock absorbing member (500), wherein the first shock absorbing member (400) and the second shock absorbing member (500) are respectively located on two sides of the fan (200) so that the fan (200) and the housing (100) are spaced apart from each other.

8. The fan assembly according to claim 7, characterized in that: The second shock absorbing member (500) is provided with a limiting protrusion (510) in the circumferential direction, and the lower shell (120) is provided with a limiting groove (123) capable of engaging with the limiting protrusion (510) to limit the second shock absorbing member (500) from rotating along its own axis.

9. The fan assembly according to any one of claims 1 to 8, characterized in that: A pressure plate (600) is provided between the exhaust port (210) and the gas outlet channel (111) to prevent the gas from flowing out to the cavity structure (130), and an air flow monitor (700) is provided at the tail end of the gas outlet channel (111) to detect the gas flow rate of the gas outlet (112) in real time.

10. A ventilator, characterized in that: A fan assembly as described in any one of claims 1 to 9 is installed.

Images