Backflow prevention device, humidifying tank and breathing machine

Abstract

The utility model belongs to the technical field of humidifying tanks, and particularly relates to an anti-backflow device, a humidifying tank and a breathing machine. The anti-backflow device comprises a waterproof piece and an air passing piece; the air passing part comprises an air passing pipeline and a flange arranged around the air passing pipeline, the waterproof part is a cylindrical body with an opening in one end, the air passing pipeline is sleeved with the waterproof part, and the flange is used for blocking the air outlet of the humidifying tank and the opening of the waterproof part; a gas passing hole is formed in the waterproof part and is communicated with the gas passing pipeline, so that gas generated by heating the humidifying tank is discharged from the gas outlet. According to the utility model, water in the humidifying tank is prevented from pouring out and flowing out through the flange. The opening of the waterproof piece is blocked through the flange, and gas generated by heating is discharged into the breathing machine through the gas passing hole and the gas passing pipeline, so that the effect that gas does not pass through water is achieved, water backflow is prevented, meanwhile, gas discharging is not affected, and the problem that water in the humidifying tank flows back to enter the breathing machine to cause harm is effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of humidification tanks, and particularly relates to an anti-backflow device, a humidification tank and a ventilator. Background Art

[0002] The humidifier used in the ventilator is used to mix oxygen with water vapor to increase the patient's comfort on the ventilator and humidify the respiratory tract.

[0003] During the transportation of the ventilator, due to the tilt of the machine, the water inside the humidifier tank can easily flow into the ventilator. In addition, the condensed water produced by the high-humidity and hot gas can easily accumulate inside the ventilator, causing damage to the ventilator or harm to the patient. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to provide an anti-backflow device, a humidifier and a ventilator in view of the problem that water in the existing humidifier tank easily flows into the ventilator, causing damage to the ventilator or causing harm to the patient.

[0005] In order to solve the above technical problems, on the one hand, the embodiment of the utility model provides a backflow prevention device, including a waterproof part and a gas passing part;

[0006] The air passing member includes an air passing pipe and a flange arranged around the air passing pipe, the waterproof member is a cylindrical body with one axial end open, the waterproof member is sleeved on the outside of the air passing pipe, and the flange is used to block the air outlet of the humidification tank and the opening of the waterproof member;

[0007] The waterproof part is provided with an air hole, which is connected to the air passage pipe so as to discharge the gas generated by heating the humidification tank from the air outlet.

[0008] Optionally, the waterproof member includes a peripheral wall and a bottom wall connected to the peripheral wall, the peripheral wall is arranged around the outer edge of the bottom wall, and one end of the peripheral wall away from the bottom wall is connected to the flange;

[0009] The air holes are arranged on the peripheral wall.

[0010] Optionally, a plurality of the air holes are provided, and the plurality of air holes are spaced apart along the circumferential direction of the peripheral wall.

[0011] Optionally, a plurality of drain ports are provided on the bottom wall, and the drain ports are used to drain the condensed water into the humidification tank.

[0012] Optionally, a protrusion is further provided on the bottom wall, the protrusion protrudes toward the direction of the air passage, and the plurality of drainage openings are arranged around the protrusion at intervals.

[0013] Optionally, a positioning groove is provided on the flange, and an end of the peripheral wall away from the bottom wall is arranged in the positioning groove.

[0014] On the other hand, the embodiment of the utility model provides a humidification tank, comprising a tank body and the anti-backflow device as described above, wherein the tank body is provided with an air outlet pipe, and the air outlet is provided at one end of the air outlet pipe away from the tank body;

[0015] The air passage pipe and the waterproof component are arranged in the air outlet pipe, and the flange is connected to the air outlet pipe.

[0016] Optionally, a plurality of the air outlet pipes are provided, and each of the air outlet pipes is provided with the anti-backflow device.

[0017] Optionally, it also includes an air outlet connector, which is connected to the air outlet pipe.

[0018] On the other hand, an embodiment of the utility model provides a ventilator, characterized in that it includes a humidification tank as described above.

[0019] The anti-backflow device provided in the embodiment of the utility model can prevent the water in the humidifier from pouring out by blocking the air outlet of the humidifier tank with the flange. By blocking the opening of the waterproof part with the flange, the gas generated by heating passes through the air hole, and then the gas is discharged into the respirator through the air pipe and the air outlet, thereby achieving the effect of passing air without passing water, preventing water backflow while not affecting the discharge of gas, and effectively solving the harm caused by the backflow of water inside the humidifier tank into the respirator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a backflow prevention device provided by an embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of a humidification tank provided in one embodiment of the utility model;

[0022] Figure 3 It is a cross-sectional schematic diagram of a humidification tank provided in one embodiment of the utility model.

[0023] The reference numerals in the specification are as follows:

[0024] 1. Waterproof part; 11. Peripheral wall; 111. Air hole; 12. Bottom wall; 121. Drainage outlet; 122. Protrusion;

[0025] 2. Gas passing part; 21. Gas passing pipe; 22. Flange; 221. Positioning groove;

[0026] 3. Tank body; 31. Air outlet pipe; 32. Air outlet joint; 33. Float. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] like Figures 1 to 3 As shown, on the one hand, an embodiment of the utility model provides an anti-backflow device, including a waterproof member 1 and an air passing member 2. The air passing member 2 includes an air passing pipe 21 and a flange 22 arranged around the air passing pipe 21, and the flange 22 protrudes in a direction away from the central axis of the air passing pipe 21. The waterproof member 1 is a cylindrical body with one axial end open, and the waterproof member 1 is sleeved on the outside of the air passing pipe 21, and the open end of the waterproof member 1 is connected to the flange 22, and the flange 22 is used to block the air outlet of the humidification tank and the opening of the waterproof member 1.

[0029] The waterproof member 1 is provided with an air hole 111 , which is connected to the air pipe 21 . The hot and humid gas generated by the humidification tank passes through the air hole 111 and the air pipe 21 in sequence and is discharged from the air outlet.

[0030] When the humidifier tank is tilted, the flange 22 blocks the air outlet of the humidifier tank, thereby preventing the water in the humidifier tank from pouring out. A small amount of water may enter the waterproof member 1 through the air hole 111. Due to the guidance of the side wall of the waterproof member 1, this part of water can be collected in the waterproof member 1 and is not easy to flow out of the humidifier tank, thereby preventing the water from flowing back.

[0031] Furthermore, due to the sealing of the opening of the waterproof component 1 by the flange 22, the hot and humid gas generated by heating passes through the air hole 111, and then the gas is discharged into the respirator through the air pipe 21, thereby achieving the effect of air passing without water passing through, preventing water from flowing back without affecting the discharge of gas, and effectively solving the harm caused by water flowing back into the respirator inside the humidification tank.

[0032] It should be noted that during the discharge process of the hot and humid gas, liquefaction will occur when it contacts the waterproof component 1 and the air duct 21, generating condensed water, thereby reducing the moisture carried in the hot and humid gas. After the hot and humid gas enters the ventilator, the condensed water generated inside the ventilator can be reduced, thereby reducing damage to the ventilator.

[0033] In one embodiment, if Figure 1As shown, the air passage duct 21 is a cylindrical body with two ends open, and the shape of the air passage duct 21 can be but not limited to a cylindrical, quadrangular prism, or triangular prism. Preferably, the shape of the air passage duct 21 is cylindrical, and correspondingly, the flange 22 is annular.

[0034] In one embodiment, the shape of the waterproof member 1 may be, but is not limited to, a cylindrical, quadrangular prism, or triangular prism. Preferably, the shape of the waterproof member 1 is cylindrical. There is a gap between the waterproof member 1 and the air passage duct 21, and the hot and humid gas enters from the air hole 111 and enters the air passage duct 21 from the gap between the waterproof member 1 and the air passage duct 21.

[0035] In one embodiment, if Figure 1 As shown, the waterproof member 1 includes a peripheral wall 11 and a bottom wall 12 connected to the peripheral wall 11, the peripheral wall 11 is arranged around the outer edge of the bottom wall 12, one end of the peripheral wall 11 away from the bottom wall 12 is connected to the flange 22, the peripheral wall 11 is connected between the bottom wall 12 and the flange 22, and the opening of the waterproof member 1 is closed by the flange 22. The peripheral wall 11 and the bottom wall 12 are an integrally formed structure.

[0036] The air hole 111 is arranged on the peripheral wall 11, and the air hole 111 is arranged at one end of the peripheral wall 11 close to the flange 22. When the humid hot water vapor generated in the humidification tank passes through the air hole 111 and the air pipe 21 in sequence, the flow path of the humid hot gas can be lengthened, so that the humid hot gas can be condensed to the greatest extent before entering the ventilator, and the condensed water generated by the humid hot gas entering the ventilator can be minimized.

[0037] In one embodiment, if Figure 1 As shown, there are multiple air holes 111, and the multiple air holes 111 are arranged at circumferential intervals along the peripheral wall 11, so that the humid and hot gas can be more dispersed. The humid and hot gas flows through the multiple air holes 111, enters the waterproof component 1, gathers together and flows out from the air duct 21.

[0038] In one embodiment, a plurality of drain ports 121 are provided on the bottom wall 12, through which condensed water of the humid hot gas can be drained into the humidification tank. In addition, water entering the waterproof component 1 when the humidification tank is tilted can also be drained.

[0039] In one embodiment, if Figure 1 , Figure 3As shown, the bottom wall 12 is also provided with a protrusion 122, the protrusion 122 protrudes toward the direction of the air passage 21, and a plurality of the drain ports 121 are arranged at intervals around the protrusion 122. The protrusion 122 can guide the condensed water, so that the condensed water can be discharged from the drain ports 121 to prevent the condensed water from entering the ventilator. In addition, after the humid hot gas enters between the waterproof component 1 and the air passage 21, the humid hot gas can be guided by the protrusion 122 to enter the air passage 21.

[0040] In one embodiment, if Figure 1 As shown, a positioning groove 221 is provided on the flange 22, and one end of the peripheral wall 11 away from the bottom wall 12 is provided in the positioning groove 221, and the installation position of the waterproof member 1 can be positioned through the positioning groove 221. The waterproof member 1 is cylindrical, and the positioning groove 221 is an annular groove. The waterproof member 1 is connected to the flange 22 by ultrasonic welding.

[0041] On the other hand, Figure 2 , Figure 3 As shown, an embodiment of the utility model provides a humidification tank, comprising a tank body 3 and the anti-backflow device of the above embodiment, wherein the tank body 3 is provided with an air outlet pipe 31, and the air outlet is provided at one end of the air outlet pipe 31 away from the tank body 3. The air passage pipe 21 and the waterproof member 1 are provided in the air outlet pipe 31, and the flange 22 is connected to the air outlet pipe 31 and closes the air outlet.

[0042] In one embodiment, a sink groove is provided on the air outlet pipe 31, and the flange 22 is interference-connected in the sink groove, which can improve the waterproof effect.

[0043] In one embodiment, if Figure 3 As shown, a plurality of the air outlet pipes 31 are provided, and each of the air outlet pipes 31 is provided with the anti-backflow device.

[0044] In one embodiment, if Figure 2 , Figure 3 As shown, the humidifier tank also includes an air outlet connector 32, which is connected to the air outlet pipe 31. The hot and humid gas discharged from the humidifier tank can be introduced into the ventilator through the air outlet connector 32.

[0045] In one embodiment, if Figure 3 As shown, a float 33 is provided in the tank body 3 , and the change of the water level in the tank body 3 can be monitored by the float 33 .

[0046] On the other hand, an embodiment of the present invention provides a ventilator, including the humidification tank of the above embodiment.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A backflow prevention device, characterized in that: Including waterproof parts and air-permeable parts; The air passing member includes an air passing pipe and a flange arranged around the air passing pipe, the waterproof member is a cylindrical body with one axial end open, the waterproof member is sleeved on the outside of the air passing pipe, and the flange is used to block the air outlet of the humidification tank and the opening of the waterproof member; The waterproof part is provided with an air hole, which is connected to the air passage pipe so as to discharge the gas generated by heating the humidification tank from the air outlet.

2. The backflow prevention device according to claim 1, characterized in that: The waterproof member comprises a peripheral wall and a bottom wall connected to the peripheral wall, the peripheral wall is arranged around the outer edge of the bottom wall, and one end of the peripheral wall away from the bottom wall is connected to the flange; The air holes are arranged on the peripheral wall.

3. The backflow prevention device according to claim 2, characterized in that: A plurality of the air holes are provided, and the plurality of the air holes are arranged at intervals along the circumferential direction of the peripheral wall.

4. The backflow prevention device according to claim 2, characterized in that: The bottom wall is provided with a plurality of drain ports, and the drain ports are used to drain the condensed water into the humidification tank.

5. The backflow prevention device according to claim 4, characterized in that: The bottom wall is also provided with a protrusion, which protrudes toward the direction of the air passage, and a plurality of drainage openings are arranged around the protrusion at intervals.

6. The backflow prevention device according to claim 2, characterized in that: The flange is provided with a positioning groove, and one end of the peripheral wall away from the bottom wall is arranged in the positioning groove.

7. A humidification tank, characterized in that: It comprises a tank body and the backflow prevention device according to any one of claims 1 to 6, wherein the tank body is provided with an air outlet pipe, and the air outlet is provided at one end of the air outlet pipe away from the tank body; The air passage pipe and the waterproof component are arranged in the air outlet pipe, and the flange is connected to the air outlet pipe.

8. The humidification tank according to claim 7, characterized in that: There are multiple air outlet pipes, and each of the air outlet pipes is provided with the anti-backflow device.

9. The humidification tank according to claim 7, characterized in that: It also includes an air outlet connector, which is connected to the air outlet pipeline.

10. A ventilator, characterized in that: Comprising the humidification tank according to any one of claims 7 to 9.

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