Airtight shock absorption, noise reduction and oxygen mixing structure of fan in breathing machine

Abstract

The utility model provides an airtight shock absorption, noise reduction and oxygen mixing structure of a fan in a breathing machine, which relates to a breathing machine structure and comprises a noise reduction box covered by a noise reduction box upper cover and a noise reduction box lower cover, an air inlet is arranged on the noise reduction box, and the fan is arranged in the noise reduction box. Shock pads are arranged above and on the bottom side of the silencing box and outside the air outlet so as to abut against the inner wall of the silencing box for shock absorption. A first-layer oxygen mixing cavity, a second-layer oxygen mixing cavity and an air outlet cavity extend outwards from one side of the silencing box lower cover, an air outlet of the fan is communicated with the first-layer oxygen mixing cavity, one end of the top of the first-layer oxygen mixing cavity is communicated with an oxygen inlet, the other end of the top of the first-layer oxygen mixing cavity is communicated with the second-layer oxygen mixing cavity arranged above the first-layer oxygen mixing cavity, and a channel opening communicated with the air outlet cavity is formed in the second-layer oxygen mixing cavity. A mixed gas outlet is formed in the side, opposite to the channel opening, of the gas outlet cavity, an oxygen concentration sensor is further arranged between the mixed gas outlet and the channel opening, the breathing machine can be more stable and silent in use, and output air and oxygen are more uniform.

Description

Technical Field

[0001] The utility model relates to a ventilator structure, in particular to an airtight shock-absorbing, noise-reducing and oxygen-mixing structure of a blower in the ventilator. Background Art

[0002] In order to make the ventilator work better and make the key components inside the ventilator, the fan and oxygen concentration sensor, run more stably and better, it is necessary to better optimize the structure when cooperating with the fan and the oxygen concentration sensor. Based on this idea, the technical solution of the present utility model is formed. This solution is a solution determined after continuous verification that can take into account the air tightness of the fan, shock absorption during operation, quietness and better air-oxygen mixing. It can make the ventilator more stable and quieter when in use, and the output air and oxygen gas is more uniform. Utility Model Content

[0003] The utility model aims to provide an airtight shock-absorbing and noise-reducing and oxygen-mixing structure for a blower in a ventilator, which can make the ventilator more stable and quieter during use, and output air and oxygen gas more uniform.

[0004] The utility model provides the following technical solutions:

[0005] The invention relates to an airtight vibration-damping and noise-reducing and oxygen-mixing structure for a fan in a ventilator, comprising a silencer box in the ventilator which is covered by an upper silencer box cover and a lower silencer box cover. The silencer box is provided with an air inlet, and a fan is placed in the silencer box. Shock-absorbing pads are provided on the upper and lower sides of the fan and outside the air outlet to press against the inner wall of the silencer box for vibration reduction. At this point, the fan contacts the shock-absorbing pad of silica gel and then contacts the silencer box. In this way, the vibration of the fan is partially offset by the silica gel before being transmitted to the silencer box, thereby relatively reducing the noise level of the silencer box. Vibration; one side of the lower cover of the muffler box also extends outward to form a first layer of oxygen mixing chamber, a second layer of oxygen mixing chamber and an air outlet chamber, the air outlet of the fan is connected to the first layer of oxygen mixing chamber, one end of the cavity top of the first layer of oxygen mixing chamber is connected to the oxygen inlet, and the other end is connected to the second layer of oxygen mixing chamber arranged above it, the second layer of oxygen mixing chamber is provided with a channel opening connected to the air outlet chamber, the air outlet chamber is provided with a mixed gas outlet on the opposite side of the channel opening, and an oxygen concentration sensor is also provided between the mixed gas outlet and the channel opening;

[0006] During operation, the air inlet is connected to the outside atmosphere, and the fan sucks in air from here after working. The oxygen inlet is connected to the oxygen cylinder, and oxygen flows in from here. Since the second-layer oxygen mixing chamber is located on the upper layer of the first-layer oxygen mixing chamber, when oxygen flows in, it can first flow downward into the first-layer oxygen mixing chamber to mix with the air, and then flow to the other end of the first-layer oxygen mixing chamber and upward into the second-layer oxygen mixing chamber. In the process of upward flow, it is also a process of further mixing. The mixed gas enters the gas outlet chamber through the channel port of the second-layer oxygen mixing chamber, and then flows out from the mixed gas outlet, so that the output gas air-oxygen mixture is more uniform, and the oxygen concentration sensor reading is closer to the actual oxygen concentration value, thereby achieving the purpose of better shock absorption and quietness, air tightness and uniform output of air-oxygen mixed gas.

[0007] Preferably, four groups of mounting blocks extend outward from the periphery of the lower cover of the muffler box. The mounting blocks are pressed against the mounting posts of the lower cover of the ventilator through silicone sleeves, and the mounting screws pass through the silicone sleeves and are threadedly locked in the mounting posts. At this point, the mounting blocks can be locked and pressed against the mounting posts, thereby achieving locking and fixation of the muffler box and the lower cover of the ventilator. Due to the addition of the silicone sleeve, it is equivalent to the vibration of the fan being offset twice and then transmitted to the entire machine, which can effectively reduce the vibration and noise of the machine when it is working.

[0008] Preferably, the air inlet of the silencer is connected to a connected air pipe, the oxygen inlet is connected to a connected oxygen pipe, and an annular air-blocking sealing ring is further provided at the connection between the air inlet and the air pipe, and at the connection between the oxygen inlet and the oxygen pipe, the air-blocking sealing ring is used to improve the connection sealing when inputting air and oxygen.

[0009] Preferably, the covering ports of the upper cover and the lower cover of the silencer box are sealed by an H-shaped sealing gasket, and the H-shaped sealing gasket has a concave upper notch and a concave lower notch for wrapping around the covering ports of the upper cover and the lower cover of the silencer box, and the inner walls and the bottom of the concave upper notch and the concave lower notch on both sides are provided with sealing strips for pressing and sealing on the upper cover and the lower cover of the silencer box, so as to seal the formed silencer box.

[0010] Preferably, at least two pairs of docking column groups are provided between the upper cover and the lower cover of the silencer box, each pair of docking column groups includes docking column units that are docked together, one group of docking column units is provided with locking screws that are threaded and locked in the other group of docking units, and the H-shaped sealing gasket also extends with an annular sealing block for surrounding and sealing outside each pair of docking column groups, so as to ensure the connection while also ensuring the sealing effect.

[0011] Preferably, a cable sealing plug is provided on the upper cover of the muffler box, and a cable outlet for the fan cable is provided on the cable sealing plug.

[0012] Preferably, the oxygen concentration sensor is fixed to the air outlet cavity by screws, and is spaced apart from the inner wall of the air outlet cavity by a sealing spacer.

[0013] Preferably, the air outlet cavity is also provided with a sampling port for subsequent sampling work, which can be directly connected to a pressure sensor to detect the internal pressure of the airway.

[0014] The beneficial effects of the present invention are as follows: when working, the air inlet is connected to the external atmosphere, and the air is sucked in from here after the fan works; the oxygen inlet is connected to the oxygen cylinder, and oxygen flows in from here; since the second-layer oxygen mixing chamber is located on the upper layer of the first-layer oxygen mixing chamber, after the oxygen flows in, it can first flow downward into the first-layer oxygen mixing chamber to mix with the air, and then flow to the other end of the first-layer oxygen mixing chamber and upward into the second-layer oxygen mixing chamber; in the process of upward flow, it is also a process of further mixing; the mixed gas enters the gas outlet chamber through the channel port of the second-layer oxygen mixing chamber, and then flows out from the mixed gas outlet, so that the output gas air-oxygen mixture is more uniform, and the oxygen concentration sensor reading is closer to the real oxygen concentration value, thereby achieving the purpose of better vibration reduction and noise reduction, air tightness and output of uniform air-oxygen mixed gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of the utility model placed in the lower cover of the ventilator;

[0017] Figure 2 yes Figure 1 A schematic diagram of the structure with the upper cover and lower cover of the muffler box removed;

[0018] Figure 3 This is a schematic diagram of the structure of the lower cover of the muffler box from the first perspective;

[0019] Figure 4 This is a structural diagram of the lower cover of the muffler box from a second viewing angle;

[0020] Figure 5 This is a schematic diagram of the structure of the lower cover of the muffler box from a third-person perspective;

[0021] Figure 6 It is a structural diagram of an H-shaped gasket;

[0022] Figure 7 It is an H-shaped gasket along Figure 6 Cross-sectional view along the mid-SS line;

[0023] Figure 8 yes Figure 1A partial enlarged view of part A;

[0024] Figure 9 This is a cross-sectional view of the structure where an air-blocking sealing ring is added to the connection between the oxygen inlet and the oxygen pipe;

[0025] Markings in the figure:

[0026] 1. Upper cover of silencer box; 2. Lower cover of silencer box; 3. Shock-absorbing pad; 4. First layer of mixed oxygen chamber; 5. Second layer of mixed oxygen chamber; 6. Air outlet chamber; 7. Fan; 8. Air outlet; 9. Channel opening; 10. Mixed gas outlet; 11. Oxygen concentration sensor; 12. Mounting block; 13. Silicone sleeve; 14. Mounting column; 15. Mounting screw; 16. Air pipe; 17. Oxygen pipe; 18. Air resistance sealing ring; 19. H-shaped sealing gasket; 20. Sealing strip; 21. Docking column unit; 22. Locking screw; 23. Ring sealing block; 24. Cable sealing plug; 25. Sealing sleeve; 26. Sampling port. DETAILED DESCRIPTION

[0027] like Figure 1-9 As shown, an airtight vibration-damping, noise-reducing and oxygen-mixing structure for a fan in a ventilator is provided. In this embodiment, the structure includes a muffler box in the ventilator, which is covered and installed by an upper muffler cover 1 and a lower muffler cover 2. The muffler box is provided with an air inlet, and a fan 7 is placed in the muffler box. Shock-absorbing pads 3 are provided on the top and bottom of the fan 7 and outside the air outlet 8 to press against the inner wall of the muffler box for vibration reduction. At this point, the fan 7 contacts the silica gel shock-absorbing pad 3 and then contacts the muffler box. In this way, the vibration of the fan 7 is partially offset by the silica gel before being transmitted to the muffler box, thereby relatively reducing the vibration of the muffler box.

[0028] Four groups of mounting blocks 12 are extended outward from the periphery of the lower cover 2 of the muffler box. The mounting blocks 12 are pressed against the mounting posts 14 of the lower cover of the ventilator through silicone sleeves 13. The mounting screws 15 pass through the silicone sleeves 13 and are threadedly locked in the mounting posts 14. At this point, the mounting blocks 12 can be locked and pressed against the mounting posts 14, thereby achieving locking and fixing of the muffler box and the lower cover of the ventilator. Due to the addition of the silicone sleeves 13, it is equivalent to the vibration of the fan 7 being offset twice and then transmitted to the entire machine, which can effectively reduce the vibration and noise of the machine when it is working.

[0029] The covering ports of the muffler upper cover 1 and the muffler lower cover 2 are sealed by an H-shaped sealing gasket 19, and the H-shaped sealing gasket 19 has a concave upper notch and a concave lower notch for covering the covering ports of the muffler upper cover 1 and the muffler lower cover 2. The inner walls and bottoms of the two sides of the concave upper notch and the concave lower notch are provided with sealing strips 20 for pressing and sealing on the muffler upper cover 1 and the muffler lower cover 2, so as to seal the formed muffler.

[0030] At least two pairs of docking column groups are provided between the upper cover 1 and the lower cover 2 of the silencer box, and each pair of docking column groups includes docking column units 21 that are mated together. One group of docking column units 21 is provided with locking screws 22 that are threaded and locked in the other group of docking units, and the H-shaped sealing gasket 19 also extends with an annular sealing block 23 for surrounding and sealing outside each pair of docking column groups, so as to ensure the connection while also ensuring the sealing effect.

[0031] The upper cover 1 of the muffler box is provided with a cable sealing plug 24 , and the cable sealing plug 24 is provided with a cable outlet for the cable of the fan 7 .

[0032] One side of the lower cover 2 of the muffler box also extends outward to form a first layer of oxygen mixing chamber 4, a second layer of oxygen mixing chamber 5 and an air outlet chamber 6. The air outlet 8 of the fan 7 is connected to the first layer of oxygen mixing chamber 4. One end of the cavity top of the first layer of oxygen mixing chamber 4 is connected to the oxygen inlet, and the other end is connected to the second layer of oxygen mixing chamber 5 arranged above it. A channel opening 9 connected to the air outlet chamber 6 is opened on the second layer of oxygen mixing chamber 5. The air outlet chamber 6 is provided with a mixed gas outlet 10 on the opposite side of the channel opening 9, and an oxygen concentration sensor 11 is also provided between the mixed gas outlet 10 and the channel opening 9.

[0033] During operation, the air inlet is connected to the outside atmosphere, and the fan 7 sucks air from here after working. The oxygen inlet is connected to the oxygen cylinder, and oxygen flows in from here. Since the second-layer oxygen mixing chamber 5 is located on the upper layer of the first-layer oxygen mixing chamber 4, after the oxygen flows in, it can first flow downward into the first-layer oxygen mixing chamber 4 to mix with the air, and then flow to the other end of the first-layer oxygen mixing chamber 4 and upward into the second-layer oxygen mixing chamber 5. In the process of flowing upward, it is also a process of further mixing. The mixed gas enters the air outlet chamber 6 through the channel port 9 of the second-layer oxygen mixing chamber 5, and then flows out from the mixed gas outlet 10, so that the output gas air and oxygen are mixed more evenly, and the reading value of the oxygen concentration sensor 11 is closer to the real oxygen concentration value, thereby achieving the purpose of better vibration reduction and noise reduction, air tightness and output of uniform air-oxygen mixed gas.

[0034] The air inlet of the silencer is connected to an air pipe 16, and the oxygen inlet is connected to an oxygen pipe 17. An annular air-blocking sealing ring 18 is further provided at the connection between the air inlet and the air pipe 16, and at the connection between the oxygen inlet and the oxygen pipe 17. The air-blocking sealing ring 18 is used to improve the connection sealing when inputting air and oxygen.

[0035] The oxygen concentration sensor 11 is fixed to the air outlet cavity 6 by screws, and is spaced apart from the inner wall of the air outlet cavity 6 by a sealing spacer 25 .

[0036] The air outlet cavity 6 is also provided with a sampling port 26 for subsequent sampling work, which can be directly connected to a pressure sensor to detect the internal pressure of the airway.

[0037] The working principle of the present invention is as follows: when working, the air inlet is connected to the external atmosphere, and the fan 7 sucks in air from here after working. The oxygen inlet is connected to the oxygen cylinder, and oxygen flows in from here. Since the second-layer oxygen mixing chamber 5 is located on the upper layer of the first-layer oxygen mixing chamber 4, when the oxygen flows in, it can first flow downward into the first-layer oxygen mixing chamber 4 to mix with the air, and then flow to the other end of the first-layer oxygen mixing chamber 4 and upward into the second-layer oxygen mixing chamber 5. In the process of upward flow, it is also a process of further mixing. The mixed gas enters the air outlet chamber 6 through the channel port 9 of the second-layer oxygen mixing chamber 5, and then flows out from the mixed gas outlet 10, so that the output gas air-oxygen mixture is more uniform, and the reading of the oxygen concentration sensor 11 is closer to the real oxygen concentration value, thereby achieving the purpose of better shock absorption and silence, air tightness and output of uniform air-oxygen mixed gas. The scheme structure of the present invention is mainly used for respiratory equipment, and can also be used on gas medical equipment in similar scenarios.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An airtight vibration-damping, noise-reducing and oxygen-mixing structure for a blower in a ventilator, characterized in that: The invention comprises a muffler box in a ventilator, which is covered and installed by a muffler upper cover (1) and a muffler lower cover (2), wherein the muffler box is provided with an air inlet, a fan (7) is placed in the muffler box, and a shock-absorbing pad (3) is provided on the upper and lower sides of the muffler box and outside the air outlet (8) to press against the inner wall of the muffler box for shock absorption; one side of the muffler lower cover (2) further extends outward to form a first layer of oxygen mixing chamber (4), a second layer of oxygen mixing chamber (5) and an air outlet chamber (6), and the air outlet (8) of the fan (7) is connected to a The first layer oxygen mixing chamber (4) is connected to the second layer oxygen mixing chamber (5), one end of the chamber top of the first layer oxygen mixing chamber (4) is connected to the oxygen inlet, and the other end thereof is connected to the second layer oxygen mixing chamber (5) arranged above it, and the second layer oxygen mixing chamber (5) is provided with a channel opening (9) connected to the outlet chamber (6), and the outlet chamber (6) is provided with a mixed gas outlet (10) on the opposite side of the channel opening (9), and an oxygen concentration sensor (11) is further provided between the mixed gas outlet (10) and the channel opening (9).

2. The airtight vibration-damping, noise-reducing and oxygen-mixing structure of the blower in a ventilator according to claim 1, characterized in that: Four groups of mounting blocks (12) extend outward from the periphery of the lower cover (2) of the muffler box. The mounting blocks (12) are pressed against the mounting posts (14) of the lower cover of the ventilator through silicone sleeves (13). The mounting screws (15) pass through the silicone sleeves (13) and are threadedly locked in the mounting posts (14).

3. The airtight vibration-damping, noise-reducing and oxygen-mixing structure of a blower in a ventilator according to claim 1, characterized in that: The air inlet of the muffler is connected to a communicating air pipe (16), the oxygen inlet is connected to a communicating oxygen pipe (17), and an annular air-blocking sealing ring (18) is further provided at the connection between the air inlet and the air pipe (16) and at the connection between the oxygen inlet and the oxygen pipe (17).

4. The airtight vibration-damping, noise-reducing and oxygen-mixing structure of a blower in a ventilator according to claim 1, characterized in that: The closing ports of the muffler upper cover (1) and the muffler lower cover (2) are sealed by an H-shaped sealing gasket (19). The H-shaped sealing gasket (19) has a concave upper notch and a concave lower notch for covering the closing ports of the muffler upper cover (1) and the muffler lower cover (2). The inner walls and bottoms of the concave upper notch and the concave lower notch are provided with sealing strips (20) for pressing and sealing on the muffler upper cover (1) and the muffler lower cover (2).

5. The airtight vibration-damping, noise-reducing and oxygen-mixing structure of the blower in a ventilator according to claim 4, characterized in that: At least two pairs of docking column groups are provided between the muffler upper cover (1) and the muffler lower cover (2), each pair of docking column groups includes docking column units (21) that are docked together, one group of docking column units (21) is provided with a locking screw (22) that is threaded and locked in the other group of docking units, and an annular sealing block (23) is extended from the H-shaped sealing gasket (19) for surrounding and sealing outside each pair of docking column groups.

6. The airtight vibration-damping, noise-reducing and oxygen-mixing structure of a blower in a ventilator according to claim 1, characterized in that: A cable outlet sealing plug (24) is provided on the upper cover (1) of the muffler box, and a cable outlet for the cable outlet of the blower (7) is provided on the cable outlet sealing plug (24).

7. The airtight vibration-damping, noise-reducing and oxygen-mixing structure of a blower in a ventilator according to claim 1, characterized in that: The oxygen concentration sensor (11) is fixed to the air outlet cavity (6) by screws, and is spaced apart from the inner wall of the air outlet cavity (6) by a sealing spacer (25).

8. The airtight vibration-damping, noise-reducing and oxygen-mixing structure of a blower in a ventilator according to claim 1, characterized in that: The air outlet cavity (6) is also provided with a sampling port (26) for subsequent sampling work, which can be directly connected to a pressure sensor to detect the internal pressure of the airway.

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