Ventilator structure

Abstract

The application belongs to the technical field of breathing equipment, and specifically relates to a breathing machine structure, which comprises a main machine upper shell, a main machine lower shell, a main circuit board, a fan noise reduction cover, a fan wrapping sleeve, a fan, a main machine air inlet, and a main machine air outlet. The main machine upper shell and the main machine lower shell are buckled together. The fan wrapping sleeve is fixed between the main machine upper shell and the main machine lower shell, the fan is wrapped in the inner cavity of the fan wrapping sleeve, the fan noise reduction cover is arranged on the fan wrapping sleeve, and the main circuit board is arranged on the fan noise reduction cover. The main machine air inlet is arranged on the main machine lower shell, the main machine air inlet is connected with a spiral flow channel, the spiral flow channel is connected with an upper fan cavity through a wrapping sleeve air hole on the fan wrapping sleeve, the upper fan cavity is connected with a fan air inlet, and the fan air outlet is connected with the main machine air outlet through a wave-shaped shock absorption and noise reduction mechanism. The breathing machine structure is small in size, light in weight, and convenient to carry.

Description

Technical Field

[0001] This invention belongs to the field of respiratory equipment technology, specifically a ventilator structure. Background Technology

[0002] The current mainstream ventilators have the following disadvantages: 1. Complex airway: long intake tubing with many bends and a long circuit; the blower exhaust tubing requires a reversal to reduce noise. 2. Numerous components, making installation complex. 3. Large size and weight, making them inconvenient to carry, weighing approximately 860g. They are not suitable for travel. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and to propose a ventilator structure that is small in size, light in weight, and easy to carry.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A ventilator structure includes a main unit upper shell, a main unit lower shell, a main circuit board, a fan noise reduction cover, a fan enclosure, a fan, a main unit air inlet, and a main unit air outlet; The upper and lower housings of the main unit are fastened together; the fan enclosure is fixed between the upper and lower housings of the main unit, the fan is enclosed in the inner cavity of the fan enclosure, the fan noise reduction cover is placed on the fan enclosure, and the main circuit board is placed on the fan noise reduction cover. The main unit's air inlet is located on the lower shell of the main unit. The main unit's air inlet is connected to the spiral flow channel. The spiral flow channel is connected to the upper air chamber of the ventilator through the air holes on the fan sleeve. The upper air chamber of the fan is connected to the air inlet of the ventilator. The air outlet of the fan and the air outlet of the main unit are connected by a waveform vibration damping and noise reduction mechanism.

[0005] The fan casing is provided with casing vents and casing opening. The casing vents connect the spiral flow channel and the upper air chamber of the fan. The upper air chamber of the fan is surrounded by the fan noise reduction cover, the upper part of the fan housing and the fan casing. The casing opening is used to expose the fan air inlet.

[0006] The spiral flow channel is formed by the fan noise reduction cover, the air inlet pipe, the spiral rib plate of the main unit's lower shell, the fan's lower air cavity, and the fan's enclosure.

[0007] The spiral rib is a cavity structure located on the lower shell of the main unit. Inside the cavity of the spiral rib, near the mounting hole of the air intake pipe, an airflow guide rib is provided along the direction of air entry.

[0008] The lower air chamber of the fan is formed by the lower shell of the main unit, the lower part of the fan shell, and the fan enclosure.

[0009] Preferably, the waveform damping and noise reduction mechanism is a bellows.

[0010] Preferably, the connection between the main unit's air outlet and the air outlet pipe is provided with an annular connecting groove.

[0011] Preferably, the main unit's upper casing is provided with a pressing assembly, which includes a pressing cover, a pressing pad, a control button, and an indicator light decorative ring; the pressing cover and the pressing pad are snapped together, and an indicator light decorative ring is provided around the pressing cover, the indicator light decorative ring having several protruding cylinders, each cylinder corresponding to a button indicator light on the main circuit board; the pressing cover has a downward protrusion, which corresponds to the control button on the main circuit board.

[0012] More preferably, the pressing pad is provided with a protruding structure, which is interference-fitted with the pressing cover.

[0013] More preferably, the pressing cover is provided with an inverted gripper, and the pressing pad is provided with an inverted groove that matches the inverted gripper.

[0014] Preferably, the main unit's air outlet is provided with sensor measuring heads for flow sensors and pressure sensors; the fan casing covers the main unit's air outlet, and flow sensor contact holes and pressure sensor contact holes are provided at the corresponding sensor measuring heads of flow sensors and pressure sensors, respectively covering the sensor measuring heads of flow sensors and pressure sensors; flow sensors and pressure sensors are provided on the main circuit board, respectively inserted into the flow sensor contact holes and cooperating with the sensor measuring heads of flow sensors and pressure sensors to transmit the pressure and flow parameters of the air outlet.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The main unit of this invention uses a spiral-shaped air intake path, which allows the pipeline to be arranged around the fan. This can lengthen the pipeline, reduce air intake resistance, reduce wind noise, and reduce space requirements.

[0016] 2. The fan of this invention is enclosed in a fan sleeve. Air enters the bottom of the fan through the air intake passage. The fan sleeve has a central opening, through which air can be directly introduced into the air inlet at the top of the fan, without needing to pass through other structures of the main unit. This saves space.

[0017] 3. Currently, the flow sensor in mainstream products is located at the air inlet, separate from the pressure sensor; the main unit of this invention has both a flow sensor and a pressure sensor inside, with the two sensors located close to each other, and all sensor collection points are located at the air outlet of the main unit, which further reduces the space of the main unit.

[0018] 4. The main unit's air outlet and the air outlet pipe of this invention are provided with an annular connecting groove for connecting to the pipe. This reduces the distance required to prevent the pipe from falling off compared to a normal straight air outlet, thus reducing the space required for the main unit.

[0019] 5. The present invention uses a fan sleeve to wrap the air outlet of the main unit and sets a waveform vibration reduction and noise reduction mechanism at the joint position, so there is no need to use other structures to achieve vibration reduction and noise reduction of the air outlet, which is beneficial to reducing the space of the main unit.

[0020] 6. This invention has a simple structure, few parts, and is easy to assemble; it is small in overall size and light in weight; the button indicators are clear and easy to use. The air outlet noise is low. Attached Figure Description

[0021] Figure 1 This is a top view of the ventilator structure of the present invention; Figure 2 This is a front view of the ventilator structure of the present invention; Figure 3 This is a cross-sectional view of the ventilator structure of the present invention; Figure 4 This is a partial structural diagram of the ventilator structure of the present invention; Figure 5 The airway of the ventilator structure of this invention Figure 1 ; Figure 6 The airway of the ventilator structure of this invention Figure 2 ; Figure 7 The airway of the ventilator structure of this invention Figure 3 ; Figure 8 This is a structural diagram of the lower shell of the main unit of the ventilator of the present invention; Figure 9 This is a structural diagram of the fan enclosure of the ventilator structure of the present invention; Figure 10 This is a front cross-sectional view of the fan and fan housing of the ventilator structure of the present invention; Figure 11 This is a reverse cross-sectional view of the fan and fan housing of the ventilator structure of the present invention; Figure 12 This is a structural diagram of the air outlet of the main unit of the present invention; Figure 13 This is a front view of the air outlet of the main unit of the present invention; Figure 14 This is a cross-sectional view of the air outlet of the main unit of the present invention; Figure 15 This is a top view of the main circuit board of the present invention; Figure 16 This is a bottom view of the main circuit board of the present invention; Figure 17 This is a cross-sectional view of the pressing component of the present invention; Figure 18 This is a diagram showing the position of the pressing cover of the present invention on the upper shell of the main unit; Figure 19 This is a diagram showing the position of the pressing pad of the present invention on the upper shell of the main unit; Figure 20 This is a structural diagram of the pressing pad of the present invention; Figure 21 This is a top view of the pressing pad of the present invention; Figure 22 This is a bottom view of the pressing pad of the present invention; Figure 23 This is a cross-sectional view of the indicator light decorative ring of the present invention; Figure 24 This is a bottom view of the decorative ring for the indicator light of the present invention; Figure 25 This is a top view of the decorative ring for the indicator light of the present invention; Figure 26 This is an assembly diagram of the press-fit cover and press-fit pad of the present invention; Figure 27 This is a structural diagram of the press-fit lid of the present invention; Figure label: 1. Main unit upper shell; 2. Main unit lower shell; 3. Main circuit board; 4. Fan noise reduction cover; 5. Fan enclosure; 6. Fan; 7. Main unit air inlet; 8. Main unit air outlet; 9. Enclosure vent; 10. Waveform vibration damping and noise reduction mechanism; 11. Enclosure opening; 12. Fan upper air chamber; 13. Fan lower air chamber; 14. Air inlet pipe; 15. Spiral rib plate; 16. Annular connecting groove; 17. Press cover; 18. Press pad; 19. Control button; 20. Indicator light decorative ring; 21. Cylindrical; 22. Button indicator light; 23. Protruding structure; 24. Flow sensor contact hole; 25. Pressure sensor contact hole; 26. Flow sensor; 27. Pressure sensor; 28. Inverted groove; 29. ​​Inverted gripper; 30. Flange structure; 31. Elastic stop arm; 32. Press position. Detailed Implementation

[0022] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0023] Example 1 like Figure 1-27 As shown, a ventilator structure includes a main unit upper shell 1, a main unit lower shell 2, a main circuit board 3, a fan noise reduction cover 4, a fan cover 5, a fan 6, a main unit air inlet 7, and a main unit air outlet 8.

[0024] like Figure 1 , Figure 2 , Figure 3 As shown, the upper casing 1 and lower casing 2 of the main unit are fastened together and can be detachably fixed using existing detachable fixing methods such as bolts, snaps, and interference fits. A fan enclosure 5 is fixed between the upper casing 1 and the lower casing 2, and the fan 6 is enclosed within the inner cavity of the fan enclosure 5. A fan noise reduction cover 4 is fitted over the fan enclosure 5. In this embodiment, the fan noise reduction cover 4 and the fan enclosure 5 have corresponding fixing holes around their peripheries, and are fixed to the spiral rib plate 15 inside the lower casing 2 by screws. The spiral rib plate 15 also has corresponding fixing holes. Furthermore, the fan enclosure 5 has a slot around its periphery, allowing it to be secured to the spiral rib plate 15, further enhancing the fixing effect on the fan enclosure 5. The main circuit board 3 is mounted on the fan noise reduction cover 4.

[0025] like Figure 3 , Figure 5 , Figure 8 , Figure 9 As shown, the main unit air inlet 7 is located on the lower shell 2 of the main unit. The main unit air inlet 7 is connected to the spiral flow channel. The spiral flow channel is connected to the upper air chamber 12 of the ventilator through the air hole 9 on the fan sleeve 5. The upper air chamber 12 of the fan is connected to the air inlet of the ventilator. The air outlet of the fan and the air outlet of the main unit are connected by the waveform vibration damping and noise reduction mechanism 10.

[0026] like Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the spiral flow channel is formed by the air inlet pipe 14, the spiral rib plate 15 of the main unit lower shell 2, the fan lower air cavity 13, and the fan enclosure 5. The spiral rib plate 15 is a cavity structure provided on the main unit lower shell 2. The spiral rib plate 15 is provided with the mounting hole of the air inlet pipe 14. The air inlet pipe 14 is fixed between the main unit air inlet 7 and the spiral rib plate 15, connecting the cavity of the spiral rib plate 15 and the main unit air inlet 7.

[0027] Furthermore, within the cavity of the spiral stiffener 15, near the mounting hole of the air intake pipe 14, an airflow guide stiffener is provided along the direction of air entry.

[0028] like Figure 3 , Figure 9 As shown, the fan casing 5 is provided with casing vents 9 and casing openings 11. The casing vents 9 connect the spiral flow channel and the upper air chamber 12 of the fan. The upper air chamber 12 of the fan is formed by the fan noise reduction cover 4, the upper part of the fan housing, and the fan casing 5. The casing opening 11 is used to expose the fan inlet, which is located on the upper part of the fan housing. The dimensions of the fan inlet and the casing opening 11 are consistent, and the casing opening 11 can fit snugly against the upper part of the fan housing and expose the fan inlet. This structure has good sealing performance.

[0029] like Figure 7-8 As shown, the lower air chamber 13 of the fan is formed by the lower shell of the main unit 2, the lower part of the fan shell, and the fan enclosure 5.

[0030] like Figure 14 As shown, the connection between the main unit's air outlet 8 and the external air outlet pipeline is provided with an annular connecting groove 16.

[0031] like Figure 3 , Figure 15 , Figure 18 , Figure 23 , Figure 26 , Figure 27 As shown, the main unit's upper casing 1 is equipped with a pressing assembly, which includes a pressing cover 17, a pressing pad 18, a control button 19, and an indicator light decorative ring 20. The pressing cover 17 and the pressing pad 18 are engaged together by an undercut groove 28 and an undercut gripper 29. An indicator light decorative ring 20 surrounds the pressing cover 17, and the ring has several protruding cylinders 21, each corresponding to a button indicator light 22 on the main circuit board 3. The pressing cover 17 has a downward protrusion corresponding to the control button 19 on the main circuit board 3. (Refer to...) Figure 17 The fan casing can be equipped with buckles to secure it to the main unit's upper shell, and the press cover can also be equipped with buckles to connect it to the fan casing.

[0032] like Figure 20 As shown, the pressing pad 18 is provided with a protruding structure 23, which is in an interference fit with the pressing cover 17. The interference fit is used to waterproof.

[0033] like Figure 4 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 16 As shown, the main unit's air outlet 8 is equipped with sensor measuring heads for flow sensors and pressure sensors. A fan sleeve 5 covers the main unit's air outlet 8, and flow sensor contact holes 24 and pressure sensor contact holes 25 are provided at the corresponding sensor measuring heads, each covering the sensor measuring head of the flow sensor and pressure sensor, respectively. A flow sensor 26 and a pressure sensor 27 are installed on the main circuit board 3, respectively inserted into the flow sensor contact holes 24 and pressure sensor contact holes 25 to cooperate with the sensor measuring heads of the flow sensor and pressure sensor, transmitting the pressure and flow parameters of the air outlet.

[0034] like Figure 9 , Figure 10 , Figure 11 As shown, the waveform damping and noise reduction mechanism 10 in this embodiment is a bellows, and a buffer cavity is formed inside the bellows.

[0035] like Figure 3 As shown, the ventilator structure of the present invention is mainly composed of components such as the main unit upper shell 1, main circuit board 3, fan noise reduction cover 4, fan cover 5, fan 6, main unit lower shell 2, air inlet pipe 14, and main unit air outlet 8.

[0036] The function of fan 6 is to pressurize the outside air and deliver it to the matching tubing inside the ventilator.

[0037] like Figure 5-8 As shown, the spiral flow channel is composed of an air inlet pipe 14, a spiral rib plate 15 on the lower shell of the main unit, a lower air chamber 13 for the fan, and a fan enclosure 5. The main unit's air inlet path uses a spiral-shaped air inlet line, which allows the pipeline to be arranged around the fan. This allows for a longer pipeline, reduced air inlet resistance, reduced wind noise, and a smaller space requirement.

[0038] The airflow direction in the ventilator structure is as follows: Figure 5-7 : Air first enters the main unit's air inlet 7, then enters the spiral flow channel, passing sequentially through the air inlet pipe 14, the lower air chamber 13 of the fan, then the air vent 9 of the fan casing, and the upper air chamber 12 of the fan, finally entering the fan's air inlet through the casing opening 11. Before entering the fan, the air spirals towards the fan's air inlet; within the fan, the air is accelerated and pressurized before entering the main unit's air outlet 8, forming the entire air path. The main unit's air inlet is located on the lower casing of the main unit.

[0039] like Figure 9 As shown, the air vent 9 and the opening 11 of the wrapping sleeve are provided on the fan wrapping sleeve 5.

[0040] The fan casing 5, pressing pad, air inlet pipe, etc. are made of silicone, but can also be made of other biocompatible elastic polymer materials such as PU and PE.

[0041] The fan 6 is enclosed and fixed by the fan sleeve 5. Air enters the fan inlet through the spiral air intake path. The fan sleeve has a sleeve air hole 9. Air is introduced into the upper air chamber of the fan through this hole. Since the fan inlet and the sleeve opening 11 are aligned, the fan inlet is directly exposed to the upper air chamber of the fan. Therefore, air can be directly introduced into the fan inlet after passing through the sleeve air hole 9, without having to go through other structures of the main unit, which can save space.

[0042] The fan casing covers the air outlet of the main unit. The location of this casing is the corrugated pipe, which is the wave-shaped vibration damping and noise reduction mechanism 10. A buffer cavity for the air outlet is formed at the junction of the casing, eliminating the need for other structures to achieve vibration damping and noise reduction at the air outlet. This helps to reduce the space required for the main unit.

[0043] The fan sleeve is an elastic structure, which can be assembled well even when there are errors in the machining of the silicone sleeve and the air outlet size.

[0044] The blower casing has a flow sensor contact hole 24 and a pressure sensor contact hole 25 at the air outlet. The sensor measuring heads for the flow and pressure sensors are installed inside these holes, transmitting the flow and pressure parameters from the outlet to the two sensors. The flow and pressure sensors are mounted on the main circuit board. The sensors are fixed using an interference fit, ensuring a sealed connection.

[0045] like Figure 14 A groove 16 is provided at the connection between the air outlet of the main unit and the air outlet pipe. This groove is a shallow groove surrounding the opening of the air outlet of the main unit. During the connection process, it engages with the corresponding protrusion on the air outlet pipe. This groove is used for connection with the pipe. This facilitates the locking installation of the external pipe to the air outlet and prevents the pipe from falling off. The distance required is shorter than that for a normal straight air outlet, which helps to reduce the space required for the main unit.

[0046] like Figure 3 and Figure 18 As shown, the entire machine is controlled by the main circuit board 3. The main circuit board 3 is mounted on the top of the fan noise reduction cover 4. Two control buttons are provided on the main circuit board to control the fan speed. The operator presses the control button 19 by pressing the press position 32 on the cover.

[0047] The pressing position of the cover can cause local deformation of the pressing pad 18, which triggers the switch of the control button to control the fan.

[0048] like Figure 15 As shown, the main circuit board 3 is equipped with 8 button indicator lights 22. When a button is triggered, the button indicator lights will illuminate or turn off to indicate the trigger.

[0049] The pressing pad 18 has a protruding structure 23 that forms an interference fit with the upper shell 1 of the main unit. The pressing pad 18 also has an interference fit with the pressing cover 17, which can play a good role in waterproofing and sound insulation.

[0050] After the main unit upper shell 1 and the main unit lower shell 2 are installed, the "flange structure" under the pressing pad 18 will be sandwiched between the main circuit board 3 and the pressing cover 17. When an upward external force is received, the pressing cover 17 will not come off.

[0051] The cover 17 is equipped with an indicator light decorative ring 20, which is light-transmitting. The decorative ring has 8 protruding cylinders 21, which are aligned with the positions of the 8 button indicator lights 22, so that the light can be better guided into the decorative ring.

[0052] like Figure 20-27As shown, the press cover 17 is provided with an inverted gripper 29, and the press pad 18 is provided with an inverted groove 28. During assembly, the inverted gripper 29 is placed in the inverted groove 28 to prevent the press cover from naturally detaching upwards. Four elastic retaining arms 31 are provided on the indicator light decorative ring. When the press cover is installed on the press pad 18, the press cover can press down on the elastic retaining arms 31, thus preventing the indicator light decorative ring 20 from naturally detaching upwards. Furthermore, after the button is pressed, the elastic retaining arms 31 can push upwards against the press cover 17, allowing the press cover 17 to return to its original position and aiding in button rebound.

[0053] This invention employs a buffer cavity structure with a fan wrapped in silicone, a structure that transmits flow and pressure parameters to a sensor; an assembly structure for the button indicator decorative ring, button silicone pad, and press cover in the main unit's upper shell, a pressing and rebound structure; an airflow path formed by a simple structure, and an inner groove structure for the air outlet. The above structures make the ventilator structure easy to assemble, with a small overall size and light weight.

[0054] All aspects not described in detail in this invention can be covered using conventional technical knowledge in the field.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A ventilator structure, characterized in that, The ventilator structure includes a main unit upper shell, a main unit lower shell, a main circuit board, a fan noise reduction cover, a fan cover, a fan, a main unit air inlet, and a main unit air outlet; The upper and lower housings of the main unit are fastened together; the fan enclosure is fixed between the upper and lower housings of the main unit, the fan is enclosed in the inner cavity of the fan enclosure, the fan noise reduction cover is placed on the fan enclosure, and the main circuit board is placed on the fan noise reduction cover. The main unit air inlet is located on the lower shell of the main unit. The main unit air inlet is connected to the spiral flow channel. The spiral flow channel is connected to the upper air chamber of the ventilator through the air hole of the fan sleeve. The upper air chamber of the fan is connected to the air inlet of the ventilator. The air outlet of the fan and the air outlet of the main unit are connected by a waveform vibration damping and noise reduction mechanism. The spiral flow channel is formed by the air inlet pipe, the spiral stiffener plate of the main unit's lower shell, the fan's lower air cavity, and the fan's enclosure. The lower air chamber of the fan is formed by the lower shell of the main unit, the lower part of the fan shell, and the fan enclosure. The fan casing is provided with casing vents and casing opening. The casing vents connect the spiral flow channel and the upper air chamber of the fan. The upper air chamber of the fan is surrounded by the fan noise reduction cover, the upper part of the fan housing and the fan casing. The casing opening is used to expose the fan air inlet.

2. The ventilator structure according to claim 1, characterized in that, The spiral rib is a cavity structure located on the lower shell of the main unit. Inside the cavity of the spiral rib, near the mounting hole of the air intake pipe, an airflow guide rib is provided along the direction of air entry.

3. The ventilator structure according to claim 1, characterized in that, The waveform damping and noise reduction mechanism is a bellows.

4. The ventilator structure according to claim 1, characterized in that, The connection between the main unit's air outlet and the air outlet pipe is provided with an annular connecting groove.

5. The ventilator structure according to claim 1, characterized in that, The main unit's upper casing is equipped with a pressing assembly, which includes a pressing cover, a pressing pad, a control button, and an indicator light decorative ring. The pressing cover and the pressing pad are snapped together, and an indicator light decorative ring is arranged around the pressing cover. The indicator light decorative ring has several protruding cylinders, and each cylinder corresponds to a button indicator light on the main circuit board. The pressing cover has a downward protrusion, which corresponds to the control button on the main circuit board.

6. The ventilator structure according to claim 5, characterized in that, The pressing cover is provided with an inverted gripper, and the pressing pad is provided with an inverted groove that matches the inverted gripper.

7. The ventilator structure according to claim 1, characterized in that, The main unit's air outlet is equipped with sensor measuring heads for flow sensors and pressure sensors; the fan casing covers the main unit's air outlet, and flow sensor contact holes and pressure sensor contact holes are provided at the sensor measuring heads corresponding to the flow sensor and pressure sensor, respectively covering the sensor measuring heads of the flow sensor and pressure sensor. The main circuit board is equipped with a flow sensor and a pressure sensor. The flow sensor contact hole and the pressure sensor contact hole are respectively inserted into the sensor measuring head of the flow sensor and the pressure sensor to transmit the pressure and flow parameters of the air outlet.

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