A ventilator assembly for a ventilator

Abstract

The present invention relates to the technical field of medical equipment, and discloses a ventilator assembly for a respirator, including an air collecting chamber and a driving mechanism; the inner side wall of the air collecting chamber is provided with an air outlet, the inner bottom wall of the air collecting chamber is provided with an air inlet, and the inner bottom wall of the air collecting chamber is fixedly connected with an air collecting ring corresponding to the air inlet; the driving mechanism includes a driving member and an impeller member detachably connected in the air collecting chamber, the output end of the driving member is fixedly connected with one end of the impeller member, the other end of the impeller member is provided with a avoidance opening corresponding to the air inlet, the avoidance opening is fixedly connected with a blocking ring toward the edge of the inner bottom wall of the air collecting chamber, the inner ring of the blocking ring is spaced apart from the outer ring of the air collecting ring, and the edge where the blocking ring is connected to the impeller member is arranged in an arc shape. The ventilator assembly for a respirator can ensure the stability of air pressure and reasonably handle the dynamic characteristics of the driving rod.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, and in particular to a ventilator assembly for a ventilator. Background Art

[0002] In the field of medical equipment, ventilators have become an indispensable and important device in clinical and home care. With the increasing demand for portable ventilators, the design and performance of ventilator components directly affect the patient's respiratory treatment effect and user experience. Especially in long-term use scenarios, the sealing, stability and noise control of ventilator components become particularly important.

[0003] The ventilator fan assembly in the prior art usually adopts a structural form in which a drive rod drives a vane assembly, the purpose of which is to reduce noise, wherein one end of the drive rod is connected to the motor shaft, and the other end is directly connected to the vane assembly. However, since the other end of the drive rod lacks a supporting structure and the connection with the air inlet fails to achieve effective sealing, there will be air leakage problems, affecting the stability of the intake air pressure. However, if the vane assembly is tightly connected to the air inlet through a sealing ring, although the sealing effect will be improved, the slight swing of the drive rod will cause vibration or shaking, thereby causing vibration friction at the connection between the vane assembly and the air inlet. The air outlet is directly and rigidly connected to the vibration source (driving rod). The vibration energy cannot be effectively dissipated, but aggravates the overall vibration. The radial vibration will cause the sealing ring to bear periodic radial stress. At the same time, the heat generated by the driving rod during operation will be transferred to the sealing structure through the rigid connection. The temperature change causes thermal expansion of the material, and thermal stress is generated at the closed connection, which accelerates the fatigue damage of the sealing material. Due to the sealed connection and if a support structure is added to the other end of the driving rod (a ring is rotatably connected to the driving rod through a bearing, and the ring is fixedly connected to the inner wall of the cavity through a support rod), it is inconvenient to disassemble, which increases the time and cost of daily maintenance.

[0004] Therefore, the existing ventilator fan assembly still has the problem that the air inlet cannot satisfy the requirements of both ensuring stable air pressure and properly handling the dynamic characteristics of the drive rod. Summary of the invention

[0005] The object of the present invention is to provide a ventilator assembly for a respirator, which can ensure stable air pressure and reasonably handle the dynamic characteristics of a driving rod.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] Design a ventilator assembly for a ventilator, including an air collecting chamber and a driving mechanism;

[0008] An air outlet is provided on the inner side wall of the air collecting cavity, an air inlet is provided on the inner bottom wall of the air collecting cavity, and an air collecting ring is fixedly connected to the inner bottom wall of the air collecting cavity corresponding to the air inlet;

[0009] The driving mechanism includes a driving member and an impeller member detachably connected in the air collecting chamber, the output end of the driving member is fixedly connected to one end of the impeller member, the other end of the impeller member is provided with a avoidance opening corresponding to the air inlet, the avoidance opening is fixedly connected with a blocking ring on the edge of the bottom wall of the air collecting chamber, the inner circle of the blocking ring is spaced apart from the outer circle of the air collecting ring, and the edge where the blocking ring is connected to the impeller member is arranged in an arc shape.

[0010] Optionally, the impeller component includes an upper disc and a lower disc, and inclined blades are arranged between the upper disc and the lower disc, and the circumferential array of the blades is outside the avoidance port, the avoidance port is opened on the lower disc, the resistance ring is correspondingly connected to the lower disc, and the surface of the upper disc away from the lower disc is connected to the output end of the driving component.

[0011] Optionally, a dispersion block is fixedly connected to the avoidance opening corresponding to the upper disk, and is at least partially located in the avoidance opening. The end of the dispersion block away from the upper disk is hemispherical and spaced apart from the inner circle of the avoidance opening. The other end of the dispersion block extends evenly away from the axis of the upper disk, and the edge where the dispersion block is connected to the upper disk is arc-shaped.

[0012] Optionally, the driving member includes a fan casing and a driving shaft, one end of the fan casing is detachably connected to the inner top wall of the air collecting chamber, the other end of the fan casing is rotatably connected to the driving shaft through a hole, and one end of the driving shaft is fixedly connected to the upper disc.

[0013] Optionally, the fan casing includes an inner liner, a stator, a rotor and a cover plate, one end of the inner liner is detachably connected to the inner top wall of the air collecting chamber, and is detachably connected to the cover plate through a through hole, bearings are provided in the inner liner and the cover plate, the inner liner and the cover plate are rotatably connected to the drive shaft through the bearings, the stator is fixedly connected in the inner liner, and the rotor is arranged in the stator and fixedly connected to the outer surface of the drive shaft.

[0014] Optionally, the air collecting chamber is opened in the outer shell, and the outer shell also includes a first shell and a second shell, the lower surface of the first shell is opened with a splicing groove, and the upper surface of the second shell is provided with a splicing block corresponding to the splicing groove, the inner wall of the splicing groove is slidably connected to the splicing block, the air collecting chamber is formed between the first shell and the second shell, the upper surface of the first shell is detachably connected to the inner tank through the opened step groove, the inner tank is at least partially located in the second shell, the air inlet is opened on the second shell, and the air outlet is opened on the first shell.

[0015] Optionally, it also includes a filtering mechanism, which includes a filter screen and a filter shell, the inner wall of the air inlet is threadedly connected to the filter shell via an opened thread, and one end of the filter shell located outside the air inlet is fixedly connected to the filter screen, and also includes a scraper, which is slidably connected to the end face of the filter shell located outside the air inlet and at least partially abuts against the filter screen.

[0016] Optionally, a humidifying mechanism is also included, which includes an atomizing nozzle and a liquid storage chamber, the inner side wall of the liquid storage chamber is provided with a liquid outlet, the liquid storage chamber is connected to the output end of the atomizing nozzle through the liquid outlet, the atomizing nozzle is fixedly connected in the air collecting chamber with the output end facing the inner tank, the inner side wall of the liquid storage chamber away from the liquid outlet is provided with a liquid inlet, and the liquid storage chamber is connected to a water pump through the liquid inlet.

[0017] Optionally, it also includes an intermittent transmission mechanism, which includes a driving gear, a transmission gear, a transmission sleeve, a first magnet, a second magnet, a third magnet and a push rod, the driving gear is fixedly connected to the outer surface of the driving shaft, the transmission gear rotates at the bottom of the fan housing and meshes with the driving gear, the transmission sleeve is rotatably connected to the outer surface of the upper disc, and the inner wall meshes with the transmission gear through the opened tooth grooves, the push rod is slidably connected in the second shell body, and at least partially located in the liquid storage chamber, one end of the push rod extending out of the second shell body is fixedly connected to the scraper, the first magnet and the second magnet are both arranged on the outer surface of the transmission sleeve, and are arranged in sequence along the circumferential direction of the axis of the transmission sleeve, and the third magnet is fixedly connected to one end of the push rod corresponding to the first magnet and the second magnet.

[0018] Optionally, the push rod is provided with a first position and a second position. When the push rod is in the first position, the liquid outlet of the liquid storage chamber is blocked by the push rod, and the liquid inlet is connected with the water pump. When the push rod is in the second position, the liquid outlet is connected with the atomizing nozzle, and the liquid inlet continues to be connected with the water pump.

[0019] The present invention provides a ventilator assembly for a ventilator, which has the following beneficial effects:

[0020] The ventilator assembly for the respirator is connected with the impeller component and the air collecting chamber through the driving component, and the driving component and the impeller component can be disassembled and replaced, and the air collecting chamber can be cleaned. When in use, the driving component drives the impeller component to rotate, thereby generating negative pressure to suck the gas outside the air inlet into the air collecting chamber, and cooperates with the setting of the air collecting ring to reduce the gap between the impeller component and the air collecting ring relative to the air inlet. That is, the air collecting ring can assist in directly conveying the airflow entering the air inlet to the impeller component through the avoidance port, and then conveying it to the air collecting chamber through the impeller component. Through the setting of the impeller component, the incoming airflow can be dispersed in the air collecting chamber along the circumference of the impeller, thereby reducing the air The noise generated by the impact of the concentrated flow on the wall of the air collecting chamber, and the setting of the blocking ring can improve the sealing performance and reduce the airflow being squeezed from the bottom of the air collecting chamber into the air collecting ring. The design of the air collecting ring and the impeller makes the airflow evenly distributed along the circumference, reducing the impact of the airflow and noise. The arc design of the blocking ring effectively buffers the blocked outflowing airflow and further reduces the noise. The avoidance sleeve of the impeller is arranged on the outside of the air collecting ring and at intervals, avoiding the friction and vibration problems caused by hard connection, extending the service life of the equipment, ensuring the stability of the air pressure, and reasonably handling the dynamic characteristics of the impeller affected by the driving parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of a ventilator assembly used in a ventilator in the present invention;

[0022] Figure 2 It is a schematic diagram of a half-section structure of a ventilator assembly used in a ventilator in the present invention;

[0023] Figure 3 It is a schematic diagram of a side cross-sectional structure of a ventilator assembly used in a ventilator in the present invention;

[0024] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of part A;

[0025] Figure 5 For the present invention Figure 3 A schematic diagram of the enlarged structure of part B;

[0026] Figure 6 It is a schematic diagram of the top cross-sectional structure of the intermittent transmission mechanism in the present invention.

[0027] In the figure: 100, housing; 110, air collecting cavity; 120, air inlet; 130, air collecting ring; 140, first housing; 150, second housing; 160, joint groove; 170, joint block; 200, driving mechanism; 210, driving member; 211, fan housing; 2111, liner; 2112, stator; 2113, rotor; 2114, bearing; 2115, cover plate; 212, driving shaft; 220, impeller; 221, avoidance; 222, resistance Ring; 223, upper disc; 224, lower disc; 225, blades; 226, dispersion block; 300, filtering mechanism; 310, filter screen; 320, filter shell; 330, scraper; 400, humidifying mechanism; 410, atomizing nozzle; 420, liquid storage chamber; 500, intermittent transmission mechanism; 510, driving gear; 520, transmission gear; 530, transmission sleeve; 540, first magnet; 550, second magnet; 560, third magnet; 570, push rod. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. All other embodiments obtained by ordinary technicians in the field without making creative work based on the embodiments of the present invention shall fall within the scope of protection of the present invention.

[0029] See also Figures 1 to 6 , the present invention provides a technical solution: a ventilator assembly for a ventilator, comprising an air collecting chamber 110 and a driving mechanism 200;

[0030] An air outlet is provided on the inner side wall of the air collecting cavity 110, an air inlet 120 is provided on the inner bottom wall of the air collecting cavity 110, and an air collecting ring 130 is fixedly connected to the inner bottom wall of the air collecting cavity 110 corresponding to the air inlet 120;

[0031] The driving mechanism 200 includes a driving member 210 and an impeller member 220 detachably connected to the air collecting chamber 110. The output end of the driving member 210 is fixedly connected to one end of the impeller member 220. The other end of the impeller member 220 is provided with a avoidance opening 221 corresponding to the air inlet 120. The avoidance opening 221 is fixedly connected to the edge of the inner bottom wall of the air collecting chamber 110 with a blocking ring 222. The inner circle of the blocking ring 222 is spaced apart from the outer circle of the air collecting ring 130. The edge where the blocking ring 222 is connected to the impeller member 220 is arranged in an arc shape.

[0032] An air outlet is provided on the inner wall of the air collecting chamber 110 for conveying the airflow to the downstream system of the ventilator. The air inlet 120 serves as the entrance for the airflow to enter the ventilator assembly. The air collecting ring 130 is used to guide and stabilize the airflow. The air collecting chamber 110 provides a closed space to reduce airflow leakage and improve airflow conveying efficiency. The air collecting ring 130 helps guide the airflow, reduce airflow turbulence and stabilize the airflow direction. The air collecting ring 130 effectively guides the airflow into the avoidance port 221 of the impeller member 220 by reducing the gap between the air inlet 120 and the impeller member 220, thereby reducing airflow leakage, increasing the amount of air entering the impeller member 220 and preventing the airflow from directly impacting the impeller member 220 to cause turbulence or noise. The driving member 210 generates negative pressure to inhale external airflow by driving the impeller member 220 to rotate at a high speed. The detachable design facilitates maintenance and cleaning, extends the service life of the equipment and reduces usage. Cost is reduced, and the efficiency of operation and maintenance is improved. The impeller member 220 rotates at a high speed under the action of the driving member 210, so that the airflow enters the air collecting chamber 110 after being dispersed circumferentially by the impeller member 220. The setting of the avoidance port 221 and the spacing design with the air collecting ring 130 avoid hard connection, reduce the noise and wear caused by the vibration generated by the swing of the impeller member 220, improve the uniformity of airflow distribution, reduce the impact of airflow concentration on the wall of the air collecting chamber 110, and reduce noise. The blocking ring 222 improves the sealing performance, prevents the airflow from leaking from the bottom of the air collecting chamber 110 to the air inlet 120 area, ensures the efficiency and stability of airflow transportation, and provides a flexible connection structure, that is, the edge of the blocking ring 222 connected to the impeller member 220 is arc-shaped, which reduces the impact of the airflow on the blocking ring 222, alleviates vibration transmission, reduces noise, and extends the service life of the equipment.

[0033] In this embodiment, as a preferred solution, the impeller member 220 includes an upper disc 223 and a lower disc 224, and an inclined blade 225 is arranged between the upper disc 223 and the lower disc 224, and the blade 225 is circumferentially arrayed outside the avoidance port 221, and the avoidance port 221 is opened on the lower disc 224, and the resistance ring 222 is correspondingly connected to the lower disc 224, and the surface of the upper disc 223 away from the lower disc 224 is connected to the output end of the driving member 210, and the upper disc 223 is directly connected to the output end of the driving member 210 to realize the dynamic Direct transmission of force facilitates disassembly and maintenance. The upper disc 223 can be directly removed from the air collecting chamber 110 as the driving member 210 is disassembled. The avoidance port 221 cooperates with the air collecting ring 130 to form an air inlet channel to achieve directional guidance of the airflow. The blades 225 are distributed in a circumferential array around the avoidance port 221 to form a regular airflow channel and achieve uniform dispersion of the airflow. The blocking ring 222 is correspondingly connected to the lower disc 224 to form a sealing gap with the air collecting ring 130 to improve the sealing performance, reduce airflow leakage, and have a certain compensation space.

[0034] In this embodiment, as a preferred scheme, the upper disk 223 is fixedly connected with a dispersion block 226 corresponding to the avoidance opening 221, and is at least partially located in the avoidance opening 221. The end of the dispersion block 226 away from the upper disk 223 is hemispherically arranged and is spaced from the inner circle of the avoidance opening 221. The other end of the dispersion block 226 is evenly extended away from the axis of the upper disk 223. The edge where the dispersion block 226 is connected to the upper disk 223 is arc-shaped. Through the setting of the dispersion block 226, when flowing from the wind collecting ring 130 to the upper disk 223, it first contacts the hemispherical end of the dispersion block 226, and then gradually disperses the airflow around the dispersion block 226 through the hemispherical end of the dispersion block 226, and then enters the blade 225 area, and then enters the air collecting chamber 110 through the blade 225 area. Through the setting of the dispersion block 226, the impact of concentrated airflow can be reduced, which helps to reduce noise and at the same time avoid further vibration of the impeller 220 due to the impact of the airflow.

[0035] In this embodiment, as a preferred solution, the driving member 210 includes a fan casing 211 and a driving shaft 212. One end of the fan casing 211 is detachably connected to the inner top wall of the air collecting chamber 110, and the other end of the fan casing 211 is rotatably connected to the driving shaft 212 through an opened hole. One end of the driving shaft 212 is fixedly connected to the upper disc 223, and is used for main power transmission through the action of the driving shaft 212. Through the connection between the fan casing 211 and the driving shaft 212, the fan casing 211 drives the driving shaft 212 to rotate, and the upper disc 223 is driven to rotate through the driving shaft 212.

[0036] In this embodiment, as a preferred solution, the fan housing 211 includes an inner liner 2111, a stator 2112, a rotor 2113 and a cover plate 2115. One end of the inner liner 2111 is detachably connected to the inner top wall of the air collecting chamber 110, and is detachably connected to the cover plate 2115 through a through hole. Bearings 2114 are provided in the inner liner 2111 and the cover plate 2115. The inner liner 2111 and the cover plate 2115 are rotatably connected to the drive shaft 212 through the bearing 2114. The stator 2112 is fixedly connected in the inner liner 2111. The rotor 2113 is provided in the stator 2112 and is fixedly connected to the outer surface of the drive shaft 212.

[0037] Through the action of the inner liner 2111, a basic installation space is provided. Through the connection between the stator 2112 and the rotor 2113, it is an existing well-known technology and is only cited here. The purpose is to generate an electromagnetic driving force through the cooperation of the stator 2112 and the rotor 2113, so that the rotor 2113 drives the drive shaft 212 to rotate. Through the action of the cover plate 2115, it is used to install the bearing 2114, and the bearing 2114 installed on the inner liner 2111 plays an auxiliary positioning role for the drive shaft 212 and provides a certain supporting force. At the same time, through the detachable connection between the cover plate 2115 and the inner liner 2111 fixed by bolts, the inner liner 2111 can be removed from the air collecting chamber 110 and the cover plate 2115 can be removed. The heat dissipation device 2112 can be removed for inspection or replacement of the structure, and the inner liner 2111 is arranged in the air collecting chamber 110. The airflow entering the air collecting chamber 110 can contact the inner liner 2111, and can assist in heat dissipation of the stator 2112 arranged in the inner liner 2111. The heat generated by the stator 2112 is transferred to the inner liner 2111 through a fixed connection with the inner liner 2111, and contacts the airflow entering the air collecting chamber 110 through the inner liner 2111, and performs heat exchange with the airflow entering the air collecting chamber 110, thereby assisting in heat dissipation. At the same time, the airflow entering the air collecting chamber 110 can be heated. In a winter environment, the comfort of the user can be improved, and discomfort to the user caused by too low air temperature can be avoided, and even secondary injury can be caused.

[0038] In this embodiment, as a preferred solution, the air collecting chamber 110 is opened in the shell 100, and the shell 100 also includes a first shell 140 and a second shell 150. The lower surface of the first shell 140 is provided with a splicing groove 160, and the upper surface of the second shell 150 is provided with a splicing block 170 corresponding to the splicing groove 160. The inner wall of the splicing groove 160 is slidably connected to the splicing block 170. The air collecting chamber 110 is formed between the first shell 140 and the second shell 150. The upper surface of the first shell 140 is detachably connected to the inner liner 2111 through the opened step groove. The inner liner 2111 is at least partially located in the second shell 150. The air inlet 120 is opened on the second shell 150, and the air outlet is opened on the first shell 140.

[0039] Through the connection between the first shell 100 and the second shell 100, the first shell 100 can be installed or disassembled. After the first shell 100 is disassembled, the inside of the second shell 100 can be cleaned. At the same time, by disassembling the first shell 100, the driving mechanism 200 located on the first shell 100 can be directly removed for inspection. Through the connection between the inner liner 2111 and the first shell 100, the inner liner 2111 can be directly placed on the first shell 100 to cover the opening of the air collecting chamber 110 on the first shell 100, and can also be directly removed. The operation steps are simple and fast, and it is convenient for inspection and later maintenance. Bolts can be used to penetrate the first shell 100 and reach the inner liner 2111 for locking, or bolts can be used without locking, that is, installation can be performed in a non-locking manner.

[0040] In this embodiment, as a preferred solution, a filter mechanism 300 is further included, the filter mechanism 300 includes a filter screen 310 and a filter shell 320, the inner wall of the air inlet 120 is threadedly connected to the filter shell 320 through a thread, and one end of the filter shell 320 located outside the air inlet 120 is fixedly connected to the filter screen 310, and also includes a scraper 330, the scraper 330 is slidably connected to the end surface of the filter shell 320 located outside the air inlet 120, and at least partially abuts against the filter screen 310;

[0041] Through the connection between the filter 310 and the filter shell 320, the installation position of the filter shell 320 is determined, and the filter 310 moves with the filter shell 320. By installing the filter shell 320 in the air inlet 120, the air flow entering the air inlet 120 is first filtered by the filter 310, thereby reducing the dust and debris entering the air collecting chamber 110. Through the action of the scraper 330, when the scraper 330 slides, the filter 310 can be cleaned, that is, the dust on the filter 310 can be scraped off. Of course, some dust may be attached to the filter 310 again with the air flow. The scraper 330 can be used to continuously clean the filter 310, which can prevent dust from clogging the filter 310 for air intake and at the same time improve the air quality entering the air inlet 120, that is, reduce dust.

[0042] In this embodiment, as a preferred solution, a humidifying mechanism 400 is also included, and the humidifying mechanism 400 includes an atomizing nozzle 410 and a liquid storage chamber 420. The inner wall of the liquid storage chamber 420 is provided with a liquid outlet, and the liquid storage chamber 420 is connected to the output end of the atomizing nozzle 410 through the liquid outlet. The atomizing nozzle 410 is fixedly connected in the air collecting chamber 110 and the output end faces the inner tank 2111. The inner wall of the liquid storage chamber 420 away from the liquid outlet is provided with a liquid inlet, and the liquid storage chamber 420 is connected to the water pump through the liquid inlet;

[0043] Through the action of the humidifying mechanism 400, the airflow entering the air collecting chamber 110 can be humidified. At the same time, because the atomizing nozzle 410 is directed toward the inner tank 2111, the atomizing nozzle 410 sprays the liquid on the inner tank 2111 after atomizing the liquid, which can cooperate with the airflow entering the air collecting chamber 110 to dissipate the heat of the inner tank 2111, thereby improving the heat dissipation efficiency. At the same time, the atomized liquid can be further vaporized through heat exchange with the inner tank 2111, thereby humidifying the gas inhaled by the user, improving the comfort, and avoiding discomfort or even injury caused by the gas inhaled by the user being too dry. The further vaporization through heat exchange with the inner tank 2111 can further improve the softness of the humidified air.

[0044] In this embodiment, as a preferred solution, an intermittent transmission mechanism 500 is also included, and the intermittent transmission mechanism 500 includes a driving gear 510, a transmission gear 520, a transmission sleeve 530, a first magnet 540, a second magnet 550, a third magnet 560 and a push rod 570. The driving gear 510 is fixedly connected to the outer surface of the driving shaft 212, the transmission gear 520 rotates at the bottom of the fan housing 211 and meshes with the driving gear 510, and the transmission sleeve 530 is rotatably connected to the outer surface of the upper disc 223, and the inner The wall is meshed with the transmission gear 520 through the tooth grooves provided therein, the push rod 570 is slidably connected in the second housing 150, and is at least partially located in the liquid storage chamber 420, one end of the push rod 570 extending out of the second housing 150 is fixedly connected to the scraper 330, the first magnet 540 and the second magnet 550 are both arranged on the outer surface of the transmission sleeve 530, and are arranged in sequence along the circumferential direction of the axis of the transmission sleeve 530, and the third magnet 560 is fixedly connected to one end of the push rod 570 corresponding to the first magnet 540 and the second magnet 550;

[0045] There are multiple atomizing nozzles 410 and liquid storage chambers 420 in the humidifying mechanism 400, and there are also multiple corresponding push rods 570. At the same time, the number of third magnets 560 and push rods 570 is equal, and they are correspondingly arranged at one end of the push rods 570, and one of the push rods 570 is connected to the scraper 330.

[0046] The driving gear 510 is connected to the driving shaft 212 by the connection between the driving gear 510 and the transmission gear 520. As the driving shaft 212 rotates, the transmission gear 520 is driven to rotate. By setting the size of the driving gear 510 and the transmission gear 520, the transmission speed can be adjusted. By the connection between the transmission gear 520 and the transmission sleeve 530, the transmission gear 520 drives the transmission sleeve 530 to rotate. When the transmission gear 520 is larger than the size of the driving gear 510, the transmission sleeve 530 and the transmission gear 520 have a certain speed difference. This is a known technology. The purpose is to prevent the transmission sleeve 530 from rotating too fast. The first magnet 540 and the second magnet 550 are alternately arranged on the outer surface of the transmission sleeve 530, and the magnetic poles of the first magnet 540 and the third magnet 560 are opposite, and the magnetic poles of the second magnet 550 and the third magnet 560 are the same. The transmission sleeve 530 rotates continuously, that is, the first magnet 540 and the second magnet 550 are alternately opposite to the third magnet 560. When the first magnet 540 and the third magnet 560 are opposite, an attraction force is generated to pull the push rod 570 to move. When the second magnet 550 and the third magnet 560 are opposite, a repulsion force is generated to push the push rod 570 to move. The magnetic forces of the first magnet 540, the second magnet 550 and the third magnet 560 are sufficient to achieve the above purpose.

[0047] In this embodiment, as a preferred solution, the push rod 570 is provided with a first position and a second position. When the push rod 570 is located at the first position, the liquid outlet of the liquid storage chamber 420 is blocked by the push rod 570, and the liquid inlet is connected to the water pump. When the push rod 570 is located at the second position, the liquid outlet is connected to the atomizing nozzle 410, and the liquid inlet is continuously connected to the water pump.

[0048] When the push rod 570 moves from the first position to the second position, the second magnet 550 is opposite to the third magnet 560, and when the push rod 570 moves from the second position to the first position, the first magnet 540 is opposite to the third magnet 560. At the same time, when the push rod 570 moves from the first position to the second position or from the second position to the first position, the scraper 330 is moved with it. The scraper 330 cleans the filter 310 to prevent the filter 310 from being blocked. The contact surface between the scraper 330 and the filter 310 is made of silicone material, which will not damage the filter 310.

[0049] The water pump is a known technology and is only used for reference. The purpose is to continuously deliver the humidification liquid to the liquid storage chamber 420. At the same time, the pump pressure of the water pump matches the magnetic force of the first magnet 540, the second magnet 550 and the third magnet 560. When the push rod 570 is located at the first position, the liquid outlet of the liquid storage chamber 420 is blocked by the push rod 570. At this time, the first magnet 540 has moved with the transmission sleeve 530 to a position not opposite to the third magnet 560, but due to the pump pressure of the water pump, the push rod 570 continues to block the liquid outlet. When the second magnet 550 is opposite to the third magnet 560, the push rod 570 is pushed to move to the second position. When it moves to the second position, it does not block the liquid, so it will not be squeezed and pushed back to the first position by the liquid pumped in by the water pump.

[0050] When the water pump cooperates with the atomizing nozzle 410 to atomize the liquid, the user is in the process of inhaling. When the user is in the process of exhaling, the valve of the ventilator is cooperated, and the gas no longer enters the body of the user, then the first magnet 540 and the third magnet 560 are opposite, that is, the atomized liquid is not sprayed. When the user inhales, the second magnet 550 and the third magnet 560 are opposite, and atomized liquid begins to be sprayed to humidify the air, thereby reducing the possibility of liquid spraying in non-target areas, avoiding the equipment or environment from becoming dirty due to excessive moisture, and stopping unnecessary atomizing spraying, which can reduce the risk of the nozzle being blocked due to excess liquid accumulation, thereby increasing the life of the equipment and giving the inner liner 2111 a certain amount of heating time for heating the gas and vaporizing the liquid.

[0051] There is another embodiment, which is to adjust the length of the push rod 570. That is, when the push rod 570 is pushed by the repulsive force of the second magnet 550 and the third magnet 560, the blockage of the liquid outlet can be released, and the push rod 570 can be pushed to the second position, and the liquid enters the atomizing nozzle 410 through the liquid outlet and is sprayed out. When the second magnet 550 has moved with the transmission sleeve 530 to a position not opposite to the third magnet 560, due to the pump pressure of the water pump, the push rod 570 is reset to block the liquid outlet, which can reduce the use of the first magnet 540. This purpose can be achieved without using the first magnet 540.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ventilator assembly for a ventilator, characterized in that: It comprises an air collecting chamber (110) and a driving mechanism (200); An air outlet is provided on the inner side wall of the air collecting cavity (110), an air inlet (120) is provided on the inner bottom wall of the air collecting cavity (110), and an air collecting ring (130) is fixedly connected to the inner bottom wall of the air collecting cavity (110) corresponding to the air inlet (120); The driving mechanism (200) comprises a driving member (210) and an impeller member (220) which are detachably connected to the air collecting chamber (110); the output end of the driving member (210) is fixedly connected to one end of the impeller member (220); the other end of the impeller member (220) is provided with a avoidance opening (221) corresponding to the air inlet (120); the avoidance opening (221) is fixedly connected to an edge of the inner bottom wall of the air collecting chamber (110) with a blocking ring (222); the inner ring of the blocking ring (222) is spaced apart from the outer ring of the air collecting ring (130); and the edge of the blocking ring (222) connected to the impeller member (220) is arranged in an arc shape; The impeller member (220) comprises an upper disc (223) and a lower disc (224); inclined blades (225) are arranged between the upper disc (223) and the lower disc (224); the blades (225) are arranged in a circumferential array outside the avoidance opening (221); the avoidance opening (221) is provided on the lower disc (224); the blocking ring (222) is correspondingly connected to the lower disc (224); and the surface of the upper disc (223) away from the lower disc (224) is connected to the output end of the driving member (210); The upper disc (223) is fixedly connected with a dispersion block (226) corresponding to the avoidance opening (221), and is at least partially located in the avoidance opening (221); one end of the dispersion block (226) away from the upper disc (223) is arranged in a hemispherical shape and is spaced apart from the inner circle of the avoidance opening (221); the other end of the dispersion block (226) is uniformly extended away from the axis of the upper disc (223); and the edge of the dispersion block (226) connected to the upper disc (223) is arranged in an arc shape.

2. The ventilator assembly for a breathing machine according to claim 1, characterized in that: The driving member (210) comprises a fan casing (211) and a driving shaft (212); one end of the fan casing (211) is detachably connected to the inner top wall of the air collecting chamber (110); the other end of the fan casing (211) is rotatably connected to the driving shaft (212) via a hole; and one end of the driving shaft (212) is fixedly connected to the upper disc (223).

3. The ventilator assembly for a breathing machine according to claim 2, characterized in that: The fan casing (211) comprises an inner liner (2111), a stator (2112), a rotor (2113) and a cover plate (2115); one end of the inner liner (2111) is detachably connected to the inner top wall of the air collecting chamber (110), and is detachably connected to the cover plate (2115) via a through hole; bearings (2114) are provided in the inner liner (2111) and the cover plate (2115); the inner liner (2111) and the cover plate (2115) are rotatably connected to the drive shaft (212) via the bearings (2114); the stator (2112) is fixedly connected in the inner liner (2111); and the rotor (2113) is provided in the stator (2112) and is fixedly connected to the outer surface of the drive shaft (212).

4. The ventilator assembly for a breathing machine according to claim 3, characterized in that: The air collecting chamber (110) is opened in the shell (100), and the shell (100) further includes a first shell (140) and a second shell (150), the lower surface of the first shell (140) is provided with a splicing groove (160), and the upper surface of the second shell (150) is provided with a splicing block (170) corresponding to the splicing groove (160), and the inner wall of the splicing groove (160) is slidably connected to the splicing block (170), the air collecting chamber (110) is formed between the first shell (140) and the second shell (150), the upper surface of the first shell (140) is detachably connected to the inner shell (2111) through the opened step groove, and the inner shell (2111) is at least partially located in the second shell (150), the air inlet (120) is opened on the second shell (150), and the air outlet is opened on the first shell (140).

5. The ventilator assembly for a breathing machine according to claim 4, characterized in that: The invention also comprises a filter mechanism (300), the filter mechanism (300) comprising a filter screen (310) and a filter shell (320), the inner wall of the air inlet (120) being threadedly connected to the filter shell (320) via a threaded opening, one end of the filter shell (320) located outside the air inlet (120) being fixedly connected to the filter screen (310), and a scraper (330) being slidably connected to the end surface of the filter shell (320) located outside the air inlet (120) and at least partially abutting against the filter screen (310).

6. The ventilator assembly for a breathing machine according to claim 5, characterized in that: The device further comprises a humidifying mechanism (400), wherein the humidifying mechanism (400) comprises an atomizing nozzle (410) and a liquid storage chamber (420), wherein an inner side wall of the liquid storage chamber (420) is provided with a liquid outlet, wherein the liquid storage chamber (420) is connected to an output end of the atomizing nozzle (410) via the liquid outlet, wherein the atomizing nozzle (410) is fixedly connected in the air collecting chamber (110) with the output end facing the inner tank (2111), wherein an inner side wall of the liquid storage chamber (420) away from the liquid outlet is provided with a liquid inlet, and wherein the liquid storage chamber (420) is connected to a water pump via the liquid inlet.

7. The ventilator assembly for a breathing machine according to claim 6, characterized in that: The intermittent transmission mechanism (500) is also included. The intermittent transmission mechanism (500) includes a driving gear (510), a transmission gear (520), a transmission sleeve (530), a first magnet (540), a second magnet (550), a third magnet (560) and a push rod (570). The driving gear (510) is fixedly connected to the outer surface of the driving shaft (212). The transmission gear (520) rotates at the bottom of the fan housing (211) and meshes with the driving gear (510). The transmission sleeve (530) is rotatably connected to the outer surface of the upper disk (223), and the inner wall is provided with a plurality of holes. The tooth grooves of the driving sleeve (530) are meshed with the transmission gear (520), the push rod (570) is slidably connected in the second housing (150) and is at least partially located in the liquid storage chamber (420), one end of the push rod (570) extending out of the second housing (150) is fixedly connected to the scraper (330), the first magnet (540) and the second magnet (550) are both arranged on the outer surface of the transmission sleeve (530), and are arranged in sequence along the circumferential direction of the axis of the transmission sleeve (530), and the third magnet (560) is fixedly connected to one end of the push rod (570) corresponding to the first magnet (540) and the second magnet (550).

8. The ventilator assembly for a breathing machine according to claim 7, characterized in that: The push rod (570) is provided with a first position and a second position. When the push rod (570) is located in the first position, the liquid outlet of the liquid storage chamber (420) is blocked by the push rod (570), and the liquid inlet is continuously connected to the water pump. When the push rod (570) is located in the second position, the liquid outlet is connected to the atomizing nozzle (410), and the liquid inlet is continuously connected to the water pump.

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