CN116764049B - High-flow breathing machine with adjustable grid air resistance - Google Patents
High-flow breathing machine with adjustable grid air resistance Download PDFInfo
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- CN116764049B CN116764049B CN202310642984.2A CN202310642984A CN116764049B CN 116764049 B CN116764049 B CN 116764049B CN 202310642984 A CN202310642984 A CN 202310642984A CN 116764049 B CN116764049 B CN 116764049B
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- 230000029058 respiratory gaseous exchange Effects 0.000 title abstract description 18
- 230000005540 biological transmission Effects 0.000 claims description 15
- 239000011229 interlayer Substances 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 208000004756 Respiratory Insufficiency Diseases 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 201000004193 respiratory failure Diseases 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
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- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Air-Flow Control Members (AREA)
Abstract
The invention discloses a high-flow breathing machine with adjustable grating air resistance, which comprises a machine shell, wherein an adjusting box is fixedly arranged on one side of the machine shell, a grating is arranged in the adjusting box, and the space in the adjusting box is divided into an air outlet space and an air inlet space by the grating; the high-flow breathing machine with the adjustable grating air resistance is characterized in that a rotating sleeve is fixedly arranged on one side of a grating, a bearing shaft is rotatably arranged on the inner side wall of an adjusting box, and the rotating sleeve is rotatably connected with the bearing shaft.
Description
Technical Field
The invention belongs to the technical field of respirators, and particularly relates to a high-flow respirator with an adjustable grid air resistance.
Background
In modern clinical medicine, a respirator is used as an effective means capable of replacing autonomous ventilation by manpower, is widely used for respiratory failure caused by various reasons, anesthesia respiratory management during major surgery, respiratory support treatment and emergency resuscitation, and occupies a very important position in the field of modern medicine. The breathing machine is a vital medical device which can prevent and treat respiratory failure, reduce complications, save and prolong the life of patients.
Different patients or different illness states have different requirements on the flow and the flow rate of the gas exhausted by the breathing machine, when the traditional breathing machine has the problem that the flow rate of the gas required by the patient is smaller, the flow rate of the gas cannot be adjusted in a self-adaptive manner, and in order to enable the flow rate of the gas to reasonably require additional equipment or a complex structure, the cost of the breathing machine is too high; secondly, when the flow of the gas required by the patient is large, the limit operation of the small breathing machine cannot meet the requirement, and a plurality of breathing machines are used in parallel, so that the cost is high and the control is difficult; the large-scale breathing machine has high manufacturing cost, high energy consumption, high noise, few usable situations and is not suitable for half situations.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a high-flow respirator with an adjustable grid air resistance.
The technical scheme adopted by the invention is as follows:
the high-flow breathing machine with the adjustable grid air resistance comprises a machine shell, wherein an adjusting box is fixedly arranged on one side of the machine shell, a grid is arranged in the adjusting box, and the space in the adjusting box is divided into an air outlet space and an air inlet space by the grid; the utility model discloses a grid, including grid, adjusting box, bearing shaft, rotating sleeve, torsion spring, bottom slide, the fixed cover that rotates that is equipped with in one side of grid, rotate on the inside wall of adjusting box and be equipped with the axle that bears, rotate the cover with the junction of bearing shaft is equipped with the torsional spring, the grid is close to one side slip in the space of giving vent to anger is equipped with the bottom slide.
As the preferable mode of the invention, a bearing space is arranged in the shell, a volute is fixedly arranged on the inner wall of one side of the bearing space, a turbine is rotationally arranged in the volute, the turbine is driven by a motor, and the motor is fixedly arranged on the inner wall of one side of the bearing space; the opening of the volute is communicated with the air inlet space through an air inlet pipe, and the air inlet pipe is fixedly connected with the inner wall of one side of the bearing space.
As the preferable mode of the invention, one side of the regulating box, which is close to the air inlet pipe, is provided with an air inlet which is matched with the air inlet pipe; an air outlet is formed in one side, far away from the air inlet pipe, of the adjusting box, an air outlet pipe is fixedly arranged on the adjusting box, and the air outlet pipe is matched with the air outlet; the adjusting box is far away from the inner wall of one side of the bearing shaft is fixedly provided with a sealing plate, and the sealing plate is contacted with one end of the grille far away from the bearing shaft.
As the optimization of the invention, the grid is fixedly provided with a slide bar, the slide bar is positioned at one side of the grid close to the air outlet space, the bottom sliding plate is fixedly provided with a sliding groove, and the sliding groove is in sliding fit with the slide bar; the utility model discloses a grid, including grid, adjusting box, connecting axle, control board, slide plate, connecting axle, control board, adjusting box with fixed being equipped with the straight line rail on the perpendicular one side inner wall of grid, the straight line is equipped with the slider in the slip of rail, fixedly be equipped with the connecting axle on the slider, one side of slider is equipped with the drive plate, the one end of drive plate with the connecting axle rotates to be connected, the drive plate is kept away from the one end of connecting axle is equipped with the control lever, the control lever with the drive plate rotates to be connected, the end slide is close to one side of grid is equipped with the control groove, the control lever is located in the control groove.
Preferably, the axis of the control rod is parallel to the axis of the connecting shaft, two sides of the control rod respectively form contact surfaces, one contact surface is contacted with one end of the grid, the other contact surface is contacted with the side wall of the control groove far away from the grid, the side wall of the control groove far away from the transmission plate forms a control inclined surface, and one end of the control rod far away from the transmission plate is contacted with the control inclined surface.
As the preferable mode of the invention, one end of the grille, which is close to the transmission plate, is fixedly provided with a mounting block, one end of the mounting block, which is far away from the grille, is fixedly provided with a rotating shaft, one end of the rotating shaft, which is far away from the mounting block, is rotatably provided with a swinging plate, and one end of the swinging plate, which is far away from the rotating shaft, is rotatably connected with the connecting shaft.
As the preference of the invention, an arc-shaped rail is fixedly arranged on the inner wall of one side of the regulating box, one end of the straight line rail is overlapped with the bearing shaft, the arc-shaped rail is positioned at one end of the straight line rail far away from the bearing shaft, and the circle center of a circle where the arc-shaped rail is positioned is overlapped with the bearing shaft; the mounting block is located in the arc-shaped rail.
As the preference of the invention, one side of the grille far away from the bottom slide plate is provided with a top slide plate in a sliding way, the top slide plate is fixedly provided with the sliding grooves, the sliding grooves on the top slide plate and the bottom slide plate are in sliding fit with the sliding strips, a fixed box is arranged between the top slide plate and the bottom slide plate, two ends of the fixed box are respectively provided with a sliding rod in a sliding way, and the two sliding rods are respectively fixedly connected with the top slide plate and the bottom slide plate; the fixed box with grid fixed connection, fixed box is located the grid is kept away from the one end of rotating the cover.
As the preferable mode of the invention, a sliding space is arranged in the fixed box, one ends of the two sliding rods, which are close to each other, are both positioned in the sliding space, one ends of the two sliding rods, which are close to each other, are respectively and fixedly provided with a rack, a pinion is rotationally arranged on the inner side wall of the sliding space, the pinion is positioned between the two racks, and the pinion is simultaneously meshed with the two racks; one end of each rack, which is far away from one sliding rod fixedly connected with the rack, is provided with a reset spring, two ends of each reset spring are respectively and fixedly provided with a mounting plate, and two corresponding mounting plates of each reset spring are respectively and fixedly connected with the racks and the mounting plates which are not fixedly connected together.
Preferably, a baffle is arranged at one end of the adjusting box, which is close to the swinging plate, the baffle is fixedly connected with the inner side wall of the adjusting box, an interlayer space is formed between the baffle and the side wall of the adjusting box, and the swinging plate is positioned in the interlayer space.
The beneficial effects of the invention are as follows: the high-flow breathing machine with the adjustable grating air resistance is characterized in that the adjusting box is arranged on the outlet side of the breathing machine, the grating arranged in the adjusting box can automatically adapt to the flow speed and the flow rate of gas flowing through to change the area of an exposed area of the grating, and the flow rate of gas reaching a patient are adjusted to meet wider use requirements; in order to bring the flow rate of the gas to the patient in a suitable range in the case where the required gas flow rate is small, the gas is subjected to an acceleration treatment while flowing through the grid; in order to meet the requirements of patients, the motor rotates at a high speed, the turbine supplies a large amount of gas, the flow rate of the gas reaches the limit value in a conventional state, the flow rate of the whole device reaches the limit value, and in order to break through the limit value, the gas is subjected to deceleration treatment when the gas flows through the grid, so that the device can stably run under the condition of higher flow rate, and the service life of the device is not damaged.
Drawings
The invention will be described in further detail with reference to the accompanying drawings and detailed description.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic top view of the structure of FIG. 1 of the present invention;
FIG. 3 is a schematic top cross-sectional view of FIG. 1 of the present invention;
FIG. 4 is a schematic view of the structure of the conditioning case of FIG. 1 according to the present invention;
FIG. 5 is a schematic view of the internal structure of the cassette of FIG. 4 after it is hidden;
FIG. 6 is a schematic view of the hidden bottom slide of FIG. 5 according to the present invention;
FIG. 7 is a schematic view of the hidden structure of the grille of FIG. 6 in accordance with the present invention;
FIG. 8 is a schematic view of the back side structure of the bottom slide plate of FIG. 6 in accordance with the present invention;
FIG. 9 is a schematic elevational view of the present invention of FIG. 4;
FIG. 10 is a schematic view of the D-D direction structure of FIG. 9 according to the present invention;
FIG. 11 is a schematic view of the E-E direction structure of FIG. 9 according to the present invention;
FIG. 12 is a schematic top view of the structure of FIG. 4 of the present invention;
FIG. 13 is a schematic view of the F-F direction structure of FIG. 12 in accordance with the present invention;
fig. 14 is a schematic cross-sectional view of the fixing case of fig. 13 according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
The specific embodiment of the invention is described below with reference to fig. 1-14, and the high-flow respirator with adjustable air resistance rate of the grille comprises a casing 11, wherein an adjusting box 12 is fixedly arranged on one side of the casing 11, a grille 18 is arranged in the adjusting box 12, and the grille 18 divides a space in the adjusting box 12 into an air outlet space 17 and an air inlet space 41; the utility model discloses a gas-vent space 17, including grid 18, adjusting box 12, support axle 40, rotating sleeve 20, torsion spring, bottom slide 22, the fixed cover 20 that is equipped with in one side of grid 18, rotate on the inside wall of adjusting box 12 and be equipped with, the cover 20 with it is connected to rotate to bear the axle 40, the cover 20 with the junction of bearing the axle 40 is equipped with the torsional spring, grid 18 is close to one side slip in the space 17 of giving vent to anger is equipped with bottom slide 22. Through setting up the regulation box at the export side of breathing machine, the flow rate and the flow that the grid 18 that are equipped with inside regulation box 12 can change the area of grid 18 exposure area when the automatic adaptation gas flows, and flow and the flow rate when adjusting gas and arriving the patient to satisfy wider user demand.
The casing 11 is internally provided with a bearing space 15, a volute 51 is fixedly arranged on one side inner wall of the bearing space 15, a turbine is rotationally arranged in the volute 51 and driven by a motor 16, and the motor 16 is fixedly arranged on one side inner wall of the bearing space 15; the opening of the volute 51 is communicated with the air inlet space 41 through the air inlet pipe 14, and the air inlet pipe 14 is fixedly connected with the inner wall of one side of the bearing space 15. Turbine type breathing machine, a common breathing machine, drives the turbine to rotate through the motor, collects, pressurizes, guides gas flow, supplies the patient to use.
Advantageously, an air inlet 37 is provided on the side of the regulating box 12 close to the air inlet pipe 14, the air inlet 37 being engaged with the air inlet pipe 14; an air outlet 19 is formed in one side, away from the air inlet pipe 14, of the regulating box 12, an air outlet pipe 13 is fixedly arranged on the regulating box 12, and the air outlet pipe 13 is matched with the air outlet 19; a sealing plate 38 is fixedly arranged on the inner wall of the side of the adjusting box 12, which is far away from the bearing shaft 40, and the sealing plate 38 is contacted with one end of the grille 18, which is far away from the bearing shaft 40. The cross-sectional length (curve) of the sealing plate 38 is greater than the length of the path of movement of the grille 18, ensuring that the device remains well sealed when the grille 18 is in motion.
Advantageously, a sliding strip 25 is fixedly arranged on the grille 18, the sliding strip 25 is positioned on one side of the grille 18 close to the air outlet space 17, a sliding groove 31 is fixedly arranged on the bottom sliding plate 22, and the sliding groove 31 is in sliding fit with the sliding strip 25; the utility model discloses a grid 18, including adjusting box 12, grid 18, slider 18, slide plate 22, control rod 27, slide plate 22, connecting axle 33, drive plate 28, control rod 27 with the connecting axle 33 is fixed to be equipped with on the inner wall of one side of adjusting box 12 with grid 18 is perpendicular, the slide is equipped with slider 32 in the slide of straight line rail 39, fixedly on the slider 32, one side of slider 32 is equipped with the drive plate 28, one end of drive plate 28 with the connecting axle 33 rotates to be connected, drive plate 28 keeps away from one end of connecting axle 33 is equipped with control rod 27, control rod 27 is located control groove 35 is located to one side of bottom slide 22. The linear rail 39 is used for guiding the sliding block 32 to move, and the movement of the sliding block 32 drives the control rod 27 to move, so that the bottom sliding plate 22 is controlled to move, and the purpose of controlling the size of the actual ventilation area of the grille 18 is achieved.
Advantageously, the axis of the control lever 27 is parallel to the axis of the connecting shaft 33, two sides of the control lever 27 form contact surfaces 34 respectively, one of the contact surfaces 34 is in contact with one end of the grille 18, the other contact surface 34 is in contact with a side wall of the control slot 35 away from the grille 18, a control inclined surface 36 is formed on a side wall of the control slot 35 away from the transmission plate 28, and one end of the control lever 27 away from the transmission plate 28 is in contact with the control inclined surface 36. The contact surface 34 allows the control lever 27 to slide only in the control slot 35 without rotation.
Advantageously, a mounting block 30 is fixedly arranged at one end of the grille 18 close to the transmission plate 28, a rotating shaft 29 is fixedly arranged at one end of the mounting block 30 away from the grille 18, a swinging plate 23 is rotatably arranged at one end of the rotating shaft 29 away from the mounting block 30, and one end of the swinging plate 23 away from the rotating shaft 29 is rotatably connected with the connecting shaft 33. The power is transmitted through the connecting rod slide block.
Advantageously, an arc-shaped rail 42 is fixedly arranged on the inner wall of one side of the adjusting box 12, one end of the straight-line rail 39 coincides with the bearing shaft 40, the arc-shaped rail 42 is positioned at one end of the straight-line rail 39 away from the bearing shaft 40, and the circle center of the circle where the arc-shaped rail 42 is positioned coincides with the bearing shaft 40; the mounting block 30 is located within the arcuate rail 42. The linear rail 39 corresponds to a threshold value and when the grill 18 is moved to a position that coincides with the linear rail 39 corresponds to a state in which a conventional ventilator is operating normally.
Advantageously, a top slide plate 21 is slidably disposed on a side of the grille 18 away from the bottom slide plate 22, the slide grooves 31 are fixedly disposed on the top slide plate 21, the slide grooves 31 on the top slide plate 21 and the bottom slide plate 22 are slidably matched with the slide bars 25, a fixing box 24 is disposed between the top slide plate 21 and the bottom slide plate 22, two ends of the fixing box 24 are slidably disposed with a slide bar 26, and two slide bars 26 are fixedly connected with the top slide plate 21 and the bottom slide plate 22 respectively; the fixing box 24 is fixedly connected with the grille 18, and the fixing box 24 is located at one end of the grille 18 away from the rotating sleeve 20. The top slide plate 21 cooperates with the bottom slide plate 22 to ensure that the actual ventilation area of the grille 18 is located in the middle of the grille and that the flow field of the gas passing therethrough is ensured.
Advantageously, a sliding space 49 is provided in the fixed box 24, two ends of the sliding rods 26 close to each other are located in the sliding space 49, one rack 45 is fixedly provided at each of the two ends of the sliding rods 26 close to each other, a pinion 50 is rotatably provided on the inner side wall of the sliding space 49, the pinion 50 is located between the two racks 45, and the pinion 50 is simultaneously meshed with the two racks 45; one end of each rack 45, which is far away from one slide bar 26 fixedly connected with the rack, is provided with a reset spring 46, two ends of each reset spring 46 are respectively and fixedly provided with a mounting plate 47, and two corresponding mounting plates 47 of each reset spring 46 are respectively and fixedly connected with the racks 45 and the mounting plates 47 which are not fixedly connected together. When the ventilator is not in use, the return spring 46 can return the ventilator to its original state.
Advantageously, a partition plate 43 is disposed at one end of the adjusting box 12 near the swinging plate 23, the partition plate 43 is fixedly connected with the inner side wall of the adjusting box 12, an interlayer space 44 is formed between the partition plate 43 and the side wall of the adjusting box 12, and the swinging plate 23 is located in the interlayer space 44. The interlayer space 44 further ensures the air tightness of the device, and the interlayer space 44 conceals part of transmission parts, thereby being convenient for the maintenance and the service of the breathing machine.
The working principle of the invention is as follows:
in the initial state, the torsion spring brings the grille 18 close to the air inlet 37 until the mounting block 30 moves to one end of the arc-shaped rail 42 close to the air inlet 37; the return spring 46 is in a compressed state to keep the top slide plate 21 and the bottom slide plate 22 away from each other until the top slide plate 21 contacts the inner wall of the adjustment box 12 and the bottom slide plate 22 contacts the partition plate 43;
the motor 16 is started and the collected air enters the device from the air suction port (not shown in the figure, located on the side of the housing 11 and communicated with the inlet of the volute 51), is accelerated by the volute 51 and is guided into the regulating box 12 by the air inlet pipe 14, passes through the grille 18 in the regulating box 12, and is discharged from the air outlet pipe 13 for the patient.
The gas flows through the grating 18, and the gas drives the grating 18 to overcome the torsion spring to rotate by a certain angle in the process of passing through the grating 18, so that the faster the gas flow speed is, the larger the rotation amplitude of the grating 18 is;
the grid 18 rotates to drive the top sliding plate 21, the bottom sliding plate 22 and the fixed box 24 to move together, meanwhile, the mounting block 30 moves along the arc-shaped rail 42 along with the movement of the grid 18, the mounting block 30 drives the sliding block 32 to slide in the linear rail 39 through the swinging plate 23, the linear rail 39 drives the control rod 27 to move through the transmission plate 28, and the control rod 27 slides along the side wall of the control groove 35; in the process, the end part of the control rod 27 always contacts the control inclined surface 36 under the action of the return spring 46, so that the bottom sliding plate 22 slides relative to the grille 18;
simultaneously, the bottom slide plate 22 moves to cause the slide bars 26 and the fixed box 24 to relatively move, one slide bar 26 moves to drive the rack 45 connected with the slide bar to move, the pinion 50 drives the other rack 45 to reversely move, and the other rack 45 drives the other slide bar 26 to move, so that the two slide bars 26 are finally formed to move in opposite directions or move in opposite directions; the synchronous and reverse movement of the two slide bars 26 drives the top slide plate 21 and the bottom slide plate 22 to synchronously and reversely move relative to the grille 18;
the grille 18 is air-permeable, and the top and bottom sliding plates 21 and 22 are air-impermeable, and the effective air-permeable area of the grille 18 (i.e., the maximum air-permeable area, which corresponds to the case where the top and bottom sliding plates 21 and 22 are not covered at all) is only present in the middle position of the grille 18, and the actual air-permeable area of the grille 18 is changed to different extents by the top and bottom sliding plates 21 and 22 covering the upper and lower ends thereof.
The motor 16 rotates at a low speed, and in the case of a small gas flow (the area of the gas passing through the grid 18 is constant, the smaller the flow rate, the slower the flow rate), in order to bring the flow rate of the gas to the patient within a suitable range, the gas is accelerated as it passes through the grid 18 (the smaller the area of the gas passing through the grid 18, the faster the flow rate):
the grille 18 is rotated by an angle that does not allow the grille 18 to pass through the straight rail 39, i.e., the mounting block 30 has not passed through the middle of the arcuate rail 42, during which the slider 32 is gradually closer to the arcuate rail 42 and the top and bottom slides 21, 22 are gradually closer together, the actual ventilation area of the grille 18 is gradually reduced, resulting in an increase in the flow rate of gas through the grille 18.
In order to obtain more gas for the patient, the motor 16 rotates at high speed, the flow of gas through the grille 18 reaches a limit value (the pressure to which the device is subjected is limited, the flow rate cannot be increased infinitely, which leads to a reduction in the service life of the device), and in order to make the operation of the device more stable in the high flow regime (breaking through the maximum flow limit of the device), the gas is decelerated as it flows through the grille 18 (the flow rate of gas is constant, the area through the grille 18 is greater, the flow rate is slower):
the grille 18 is rotated by an angle that causes the grille 18 to pass over the straight rail 39, i.e., the mounting block 30 is further passed over the middle of the arcuate rail 42, during which the slider 32 is gradually closer to the arcuate rail 42, the top and bottom slides 21, 22 are gradually closer to each other, the actual gas-permeable area of the grille 18 is gradually reduced, resulting in an increase in the flow rate of gas through the grille 18 (at which time the angle of rotation of the grille 18 is further increased) until after the mounting block 30 passes over the arcuate rail 42, the slider 32 is gradually farther from the arcuate rail 42, the top and bottom slides 21, 22 are gradually farther from each other, and the actual gas-permeable area of the grille 18 is gradually increased, resulting in a decrease in the flow rate of gas through the grille 18.
In the above-mentioned acceleration and deceleration process of the gas, the flow rate of the gas is changed to change the force of the gas against the work of the torsion spring, so that the grid 18 is rotated by a certain angle (the rotation angle is small because the flow rate of the gas is increased or decreased by a value much smaller than the flow rate of the gas itself), and after the grid 18 is rotated, the grid 18 maintains a stable state under the condition that the turbine speed is unchanged, and this state is maintained by the thrust (friction force) of the gas to the grid 18, the torsion force of the torsion spring, the elastic force of the return spring 46, and the static friction of the sliding member and the rotating member.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The foregoing is merely illustrative of the structures of this invention and various modifications, additions and substitutions for those skilled in the art can be made to the described embodiments without departing from the scope of the invention or from the scope of the invention as defined in the accompanying claims.
Claims (6)
1. A high flow respirator with adjustable grid air resistance is characterized in that: the device comprises a shell, wherein an adjusting box is fixedly arranged on one side of the shell, a grid is arranged in the adjusting box, and the grid divides the space in the adjusting box into an air outlet space and an air inlet space; a rotating sleeve is fixedly arranged on one side of the grille, a bearing shaft is rotatably arranged on the inner side wall of the adjusting box, the rotating sleeve is rotatably connected with the bearing shaft, a torsion spring is arranged at the joint of the rotating sleeve and the bearing shaft, and a bottom sliding plate is slidably arranged on one side of the grille, which is close to the air outlet space;
a sliding bar is fixedly arranged on the grid, the sliding bar is positioned on one side of the grid, which is close to the air outlet space, a sliding groove is fixedly arranged on the bottom sliding plate, and the sliding groove is in sliding fit with the sliding bar; the adjusting box is fixedly provided with a linear rail on the inner wall of one side vertical to the grid, a sliding block is arranged in the linear rail in a sliding manner, a connecting shaft is fixedly arranged on the sliding block, a transmission plate is arranged on one side of the sliding block, one end of the transmission plate is rotationally connected with the connecting shaft, one end of the transmission plate, which is far away from the connecting shaft, is provided with a control rod, the control rod is rotationally connected with the transmission plate, a control groove is formed in one side, close to the grid, of the bottom sliding plate, and the control rod is positioned in the control groove;
the axis of the control rod is parallel to the axis of the connecting shaft, two sides of the control rod respectively form contact surfaces, one contact surface is contacted with one end of the grid, the other contact surface is contacted with the side wall of the control groove far away from the grid, the side wall of the control groove far away from the transmission plate forms a control inclined surface, and one end of the control rod far away from the transmission plate is contacted with the control inclined surface;
the grid is fixedly provided with a mounting block at one end close to the transmission plate, a rotating shaft is fixedly arranged at one end, far away from the grid, of the mounting block, a swinging plate is rotatably arranged at one end, far away from the mounting block, of the rotating shaft, and one end, far away from the rotating shaft, of the swinging plate is rotatably connected with the connecting shaft;
an arc-shaped rail is fixedly arranged on the inner wall of one side of the adjusting box, one end of the straight line rail is overlapped with the bearing shaft, the arc-shaped rail is positioned at one end of the straight line rail far away from the bearing shaft, and the circle center of a circle where the arc-shaped rail is positioned is overlapped with the bearing shaft; the mounting block is located in the arc-shaped rail.
2. The high flow ventilator of claim 1 wherein the grid air resistance is adjustable, and wherein: a bearing space is arranged in the shell, a volute is fixedly arranged on the inner wall of one side of the bearing space, a turbine is rotationally arranged in the volute and driven by a motor, and the motor is fixedly arranged on the inner wall of one side of the bearing space; the opening of the volute is communicated with the air inlet space through an air inlet pipe, and the air inlet pipe is fixedly connected with the inner wall of one side of the bearing space.
3. A high flow ventilator with adjustable grid air resistance as defined in claim 2, wherein: an air inlet is formed in one side, close to the air inlet pipe, of the adjusting box, and the air inlet is matched with the air inlet pipe; an air outlet is formed in one side, far away from the air inlet pipe, of the adjusting box, an air outlet pipe is fixedly arranged on the adjusting box, and the air outlet pipe is matched with the air outlet; the adjusting box is far away from the inner wall of one side of the bearing shaft is fixedly provided with a sealing plate, and the sealing plate is contacted with one end of the grille far away from the bearing shaft.
4. The high flow ventilator of claim 1 wherein the grid air resistance is adjustable, and wherein: a top sliding plate is arranged on one side of the grille, which is far away from the bottom sliding plate, the sliding grooves are fixedly arranged on the top sliding plate, the sliding grooves on the top sliding plate and the sliding grooves on the bottom sliding plate are in sliding fit with the sliding strips, a fixed box is arranged between the top sliding plate and the bottom sliding plate, two sliding rods are respectively arranged at two ends of the fixed box in a sliding manner, and the two sliding rods are respectively fixedly connected with the top sliding plate and the bottom sliding plate; the fixed box with grid fixed connection, fixed box is located the grid is kept away from the one end of rotating the cover.
5. The high flow ventilator of claim 4 wherein the grid air resistance is adjustable, and wherein: a sliding space is arranged in the fixed box, one ends of the two sliding rods, which are close to each other, are positioned in the sliding space, one ends of the two sliding rods, which are close to each other, are respectively and fixedly provided with a rack, a pinion is rotationally arranged on the inner side wall of the sliding space, the pinion is positioned between the two racks, and the pinion is simultaneously meshed with the two racks; one end of each rack, which is far away from one slide bar fixedly connected with the rack, is provided with a reset spring, and two ends of each reset spring are respectively and fixedly provided with a mounting plate.
6. The high flow ventilator of claim 1 wherein the grid air resistance is adjustable, and wherein: the adjusting box is close to one end of the swinging plate is provided with a partition plate, the partition plate is fixedly connected with the inner side wall of the adjusting box, an interlayer space is formed between the partition plate and the side wall of the adjusting box, and the swinging plate is located in the interlayer space.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310642984.2A CN116764049B (en) | 2023-06-01 | 2023-06-01 | High-flow breathing machine with adjustable grid air resistance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310642984.2A CN116764049B (en) | 2023-06-01 | 2023-06-01 | High-flow breathing machine with adjustable grid air resistance |
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| CN116764049A CN116764049A (en) | 2023-09-19 |
| CN116764049B true CN116764049B (en) | 2024-01-09 |
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| CN116764049A (en) | 2023-09-19 |
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