A respiratory humidification treatment device

Abstract

The present invention discloses a respiratory humidification treatment instrument, which relates to the field of treatment instruments and includes a gas mixing device, a gas humidifying device and a gas output device. The gas mixing device, the gas humidifying device and the gas output device are connected in sequence. The gas mixing device includes an oxygen input device, an air input device, a gas mixing chamber, a processor and an air outlet pipe. The oxygen input device, the air input device and the air outlet pipe are all communicated with the gas mixing chamber. A proportional valve for controlling the oxygen flow rate is arranged on the oxygen input device. A flow sensor and an oxygen concentration sensor are arranged on the air outlet pipe. The gas humidifying device includes an infrared water level detection device. The proportional valve, the flow sensor, the oxygen concentration sensor and the infrared water level detection device are all connected to the processor. The oxygen concentration of the gas output by this respiratory humidification treatment instrument is stable, and the humidity and temperature of the output gas are appropriate, improving the use effect of the respiratory humidification treatment instrument.

Description

Technical Field

[0001] The present invention relates to the field of therapeutic instruments, and particularly to a respiratory humidification therapeutic instrument. Background Art

[0002] Currently, with the progress of society, in order to meet the needs of patients with respiratory diseases, a respiratory humidification therapeutic instrument that can be used at home has emerged. People can use this respiratory humidification therapeutic instrument without going to the hospital. The appearance of this respiratory humidification therapeutic instrument has improved the comfort and convenience of people's lives and saved medical costs. However, due to the instability of the gas flow rate and oxygen concentration of the gas after mixing oxygen and air, the current respiratory humidification therapeutic instrument has a poor use effect. In addition, during the use of the respiratory humidification therapeutic instrument, people may not replenish water in the container of the humidifier in time, resulting in insufficient water volume in the container of the humidifier, which will affect the use effect of the respiratory humidification therapeutic instrument. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a respiratory humidification therapeutic instrument, the oxygen concentration of the gas output by which is stable, and the humidity and temperature of the output gas are appropriate, improving the use effect of the respiratory humidification therapeutic instrument.

[0004] The present invention is implemented by adopting the following technical solutions:

[0005] A respiratory humidification therapeutic instrument includes a gas mixing device, a gas humidifying device, and a gas output device, which are connected in sequence; the gas mixing device includes an oxygen input device, an air input device, a gas mixing chamber, a processor, and an air outlet pipe. The oxygen input device, the air input device, and the air outlet pipe are all communicated with the gas mixing chamber. A proportional valve for controlling the oxygen flow rate is provided on the oxygen input device. A flow sensor and an oxygen concentration sensor are provided on the air outlet pipe. A stirring device is arranged inside the gas mixing chamber. The gas humidifying device includes a heating device and a container. The heating device is used to heat the liquid inside the container. The gas output device includes a heating pipe, which is communicated with the inside of the container. The gas humidifying device includes an infrared water level detection device, which judges the water level in the container by detecting the infrared reflectivity at different height positions of the container. The proportional valve, the flow sensor, the oxygen concentration sensor, and the infrared water level detection device are all connected to the processor.

[0006] Preferably, the oxygen input device includes a first space and a second space, which are communicated with each other. A proportional valve is arranged between the first space and the second space. An oxygen inlet is provided on the first space, and an oxygen outlet is provided on the second space.

[0007] Preferably, the oxygen input device includes an oxygen pressure detection device. An oxygen pressure detection channel is provided on the first space. The oxygen pressure detection channel communicates with the first space and is used to lead oxygen to the oxygen pressure detection device.

[0008] Preferably, the oxygen input device includes an oxygen inlet element and a filtering element. The filtering element is provided on the oxygen inlet element. The filtering element is detachably connected to the oxygen inlet element. The oxygen inlet element is provided on the oxygen inlet.

[0009] Preferably, the oxygen inlet element includes a front end portion, a middle portion, a rear end portion, and an oxygen channel. The front end portion, the middle portion, and the rear end portion are connected in sequence. The oxygen channel penetrates through the front end portion and the middle portion. A first air outlet is provided on the side of the middle portion. The first air outlet communicates with the oxygen channel. The filtering element is sleeved on the middle portion and covers the first air outlet.

[0010] Preferably, a temperature and humidity sensor is provided inside the air input device.

[0011] Preferably, the infrared water level detection device determines the water level in the container by detecting the infrared reflectivity of the positions of the container above and below the water level line of the container.

[0012] Preferably, the infrared water level detection device includes a plurality of infrared transmit-receivers. The infrared transmit-receivers are all communicatively connected to a processor. The infrared transmit-receivers are used to emit infrared to the container and receive the infrared reflected by the container.

[0013] Preferably, the infrared water level detection device includes two infrared transmit-receivers. One infrared transmit-receiver is located above the water level line of the container and at a height not higher than the highest point of the container. The other infrared transmit-receiver is located below the water level line of the container and at a height not lower than the lowest point of the container.

[0014] Preferably, a water inlet channel and a floating plug that can float on the water surface are provided on the container; when the water level in the container reaches a certain height, the floating plug will block the water inlet channel.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The respiratory humidification treatment instrument of the present invention is provided with a flow sensor and an oxygen concentration sensor, which can detect the gas flow rate and oxygen concentration of the gas after the mixture of oxygen and air. The flow sensor and the oxygen concentration sensor feedback the detected data to the processor, and the processor then adjusts the proportional valve to control the gas flow rate and oxygen concentration of the gas after the mixture of oxygen and air, making the gas flow rate and oxygen concentration of the mixture of oxygen and air more stable. The respiratory humidification treatment instrument of the present invention is provided with an infrared water level detection device, which can judge the water level in the container by detecting the infrared reflectivity at different height positions of the container. Since the infrared reflectivity of the container is different from that of the container after adding water, by detecting the infrared reflectivity at a certain height position of the container and comparing it with the infrared reflectivity of the container without adding water, if the infrared reflectivities of the two are the same, the water level of the container has not reached this height position, and if the infrared reflectivities of the two are different, the water level of the container has reached this height position. After applying the infrared water level detection device of the humidifier in the respiratory humidification treatment instrument of the present invention, it can prevent the insufficient water volume in the humidifier of the respiratory humidification treatment instrument from affecting the humidification effect. The respiratory humidification treatment instrument of the present invention has a stable output gas oxygen concentration, and the output gas humidity and temperature are appropriate, improving the use effect of the respiratory humidification treatment instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the respiratory humidification treatment instrument in the embodiment of the present invention.

[0017] Figure 2 It is a front schematic diagram of the gas mixing device in the embodiment of the present invention.

[0018] Figure 3 It is a back schematic diagram of the gas mixing device in the embodiment of the present invention.

[0019] Figure 4 It is a structural schematic diagram of the oxygen input device in the embodiment of the present invention.

[0020] Figure 5 It is a structural schematic diagram of the air intake device in the embodiment of the present invention.

[0021] Figure 6 It is a schematic diagram of the intake joint element after installing the filter element in the embodiment of the present invention.

[0022] Figure 7 It is a side schematic diagram in front of the intake joint element in the embodiment of the present invention.

[0023] Figure 8 It is a side schematic diagram behind the intake joint element in the embodiment of the present invention.

[0024] Figure 9 It is a structural schematic diagram of the air input device in the embodiment of the present invention.

[0025] Figure 10 This is a left - hand schematic diagram of the respiratory humidification and treatment device without the container installed in the embodiment of the present invention.

[0026] Figure 11 This is a right - hand schematic diagram of the respiratory humidification and treatment device without the container installed in the embodiment of the present invention.

[0027] Figure 12 This is a structural schematic diagram of the container in the embodiment of the present invention.

[0028] Figure 13 This is a perspective view of the container in the embodiment of the present invention.

[0029] Figure 14 This is a circuit block diagram of the respiratory humidification and treatment device in the embodiment of the present invention.

[0030] Figure 15 This is a schematic diagram of the limit button in the embodiment of the present invention.

[0031] Figure 16 This is a partial schematic diagram of the limit button in the embodiment of the present invention.

[0032] Reference numerals: 1, gas mixing device; 2, gas humidifying device; 3, limit button; 4, oxygen input device; 5, air input device; 6, gas mixing chamber; 7, heating device; 8, container; 9, housing; 10, first space; 11, second space; 12, proportional valve; 13, oxygen inlet element; 14, filter element; 15, front end portion; 16, middle portion; 17, rear end portion; 18, oxygen channel; 19, air inlet; 20, first air outlet; 21, oxygen pressure detection channel; 22, second air outlet; 23, first annular protrusion; 24, locking member; 25, elastic washer; 26, first sealing ring; 27, second sealing ring; 28, housing; 29, fixing member; 30, second annular protrusion; 31, filter; 32, air inlet; 33, third space; 34, fourth space; 35, temperature and humidity sensor; 36, air outlet pipe; 37, water inlet channel; 38, infrared water level detection device; 39, infrared transmitter - receiver; 40, installation position; 41, bottom panel; 42, back panel; 43, left - hand panel; 44, right - hand panel; 45, gas interface; 46, accommodation space; 47, left - hand plate; 48, right - hand plate; 49, first panel; 50, second panel; 51, gas input pipe; 52, gas output pipe; 53, water inlet. Detailed implementation manners

[0033] The following Figures 1-16 elaborates on the technical solutions provided by the invention in more detail.

[0034] As Figures 1-16As shown in the figure, an embodiment of the present invention provides a respiratory humidification treatment apparatus, which includes a gas mixing device 1, a gas humidifying device 2, and a gas output device. The gas mixing device 1, the gas humidifying device 2, and the gas output device are connected in sequence. The gas mixing device 1 includes an oxygen input device 4, an air input device 5, and a gas mixing chamber 6. The oxygen input device 4 and the air input device 5 are both communicated with the gas mixing chamber 6, and a stirring device is arranged inside the gas mixing chamber 6. The gas humidifying device 2 includes a heating device 7 and a container 8. The heating device 7 is used to heat the liquid inside the container 8. The gas output device includes a heating tube, and the heating tube is communicated with the inside of the container 8.

[0035] The oxygen input device 4 is used for the high-pressure oxygen input device 4 to provide high-pressure oxygen. The oxygen input device 4 includes a first space 10 and a second space 11. The first space 10 is communicated with the second space 11. A proportional valve 12 is arranged between the first space 10 and the second space 11. The proportional valve 12 is arranged at the communication place between the first space 10 and the second space 11. By adjusting the proportional valve 12, the oxygen flow rate from the first space 10 to the second space 11 can be controlled. An oxygen inlet is arranged on the first space 10, and an oxygen outlet is arranged on the second space 11.

[0036] The oxygen input device 4 includes an oxygen inlet element 13 and a filtering element 14. The filtering element 14 is arranged on the oxygen inlet element 13. The filtering element 14 is detachably connected to the oxygen inlet element 13. The oxygen inlet element 13 is arranged on the oxygen inlet. The oxygen inlet element 13 includes a front end portion 15, a middle portion 16, a rear end portion 17, and an oxygen channel 18. The front end portion 15, the middle portion 16, and the rear end portion 17 are connected in sequence. The front end portion 15, the middle portion 16, and the rear end portion 17 are integrally arranged. An air inlet 19 is arranged on the front end portion 15. A first air outlet 20 is arranged on the side of the middle portion 16. The oxygen channel 18 penetrates through the front end portion 15 and the middle portion 16. The air inlet 19 and the first air outlet 20 are both communicated with the oxygen channel 18. The filtering element 14 is sleeved on the middle portion 16 and covers the first air outlet 20. After the oxygen inlet element 13 is installed on the oxygen inlet, the front end portion 15 is located outside the first space 10, the middle portion 16 and the rear end portion 17 are located inside the first space 10, and the first air outlet 20 is communicated with the first space 10.

[0037] The oxygen input device 4 includes an oxygen pressure detection device. An oxygen pressure detection channel 21 is provided on the first space 10. The oxygen pressure detection channel 21 communicates with the first space 10 and is used to lead oxygen to the oxygen pressure detection device. The gas pressure detection device includes a pressure sensor. The oxygen channel 18 penetrates through the rear end portion 17, and a second air outlet 22 is provided on the rear end portion 17. The second air outlet 22 communicates with the gas channel; after the oxygen inlet element 13 is installed at the oxygen inlet, the rear end portion 17 is located in the gas pressure detection channel. After oxygen enters the oxygen channel 18 from the air inlet 19 of the oxygen inlet element 13, on the one hand, the gas will flow out from the first air outlet 20, and on the other hand, the oxygen will flow out from the oxygen pressure detection channel 21. The oxygen pressure detection channel 21 will lead the gas to the oxygen pressure detection device, and the oxygen pressure detection device is used to detect the pressure value of the gas.

[0038] A first annular protrusion 23 is provided between the front end portion 15 and the middle portion 16, and a locking member 24 is sleeved on the middle portion 16. The locking member 24 includes a nut. After the filter element 14 is sleeved on the middle portion 16, the first annular protrusion 23 abuts against one end of the filter element 14, and the locking member 24 abuts against the other end of the filter element 14. The above structure not only makes the disassembly and assembly of the filter element 14 convenient, but also makes the installation of the filter element 14 more stable. Elastic gaskets 25 are provided between the filter element 14 and the first annular protrusion 23 and between the filter element 14 and the locking member 24. Since after the filter element 14 is sleeved on the middle portion 16, the locking member 24 will be sleeved thereon and then the locking member 24 is tightened, by providing the elastic gaskets 25, it can prevent the filter element 14 from directly contacting the first annular protrusion 23 and the locking member 24 and being damaged during the locking process. The elastic gaskets 25 play a buffering role. In addition, by providing the elastic gaskets 25, the sealing performance at both ends of the filter element 14 can be improved, preventing gas from flowing out from the gaps at both ends of the filter element 14, and enhancing the filtering effect of the air inlet device. A chamfer is provided on one side edge of the first annular protrusion 23 close to the filter element 14.

[0039] A first sealing ring 26 is provided between the oxygen inlet element 13 and the first space 10. The first sealing ring 26 is sleeved between the front end portion 15 and the middle portion 16. By providing the first sealing ring 26, the sealing performance of the air inlet device is further improved. A second sealing ring 27 is provided between the rear end portion 17 and the gas pressure detection channel. The second sealing ring 27 is sleeved on the rear end portion 17, and there are two second sealing rings 27. By providing the second sealing ring 27, the sealing performance of the air inlet device is further improved.

[0040] The oxygen input device 4 includes a housing 28. Both the first space 10 and the second space 11 are located inside the housing 28. The oxygen inlet element 13 further includes a fixing member 29. A second annular protrusion 30 is provided between the front end portion 15 and the middle portion 16. After the oxygen inlet element 13 is installed into the oxygen inlet, the fixing member 29 is fixedly connected to the housing 28 and abuts against the second annular protrusion 30 to prevent the oxygen inlet element 13 from falling off from the oxygen inlet. A notch is provided on the fixing member 29. The fixing member 29 is sleeved on the oxygen inlet element 13 through the notch. After the oxygen inlet element 13 is installed into the oxygen inlet, both sides of the fixing member 29 are fixed to the housing 28 by screws.

[0041] A filter 31 is provided inside the second space 11. The filter 31 functions to filter and decompress oxygen.

[0042] The air input device 5 is used to provide air. The air input device 5 includes an air inlet 32, an air outlet, a third space 33 and a fourth space 34. Both the air inlet 32 and the air outlet are provided on the third space 33. The air outlet is connected to the fourth space 34. The third space 33 is arranged in a C shape. The air inlet 32 is provided at the head end of the C shape of the third space 33, and the air outlet is provided at the tail end of the C shape of the third space 33. A temperature and humidity sensor 35 is provided inside the third space 33. The temperature and humidity sensor 35 is provided in the middle of the C shape of the third space 33.

[0043] The stirring device includes a motor and a fan blade. The fan blade is provided on the motor. After oxygen and air enter the gas mixing chamber 6, under the combined action of the motor and the fan blade, the oxygen and air are stirred and mixed.

[0044] The gas mixing device 1 includes a processor and an air outlet pipe 36. The air outlet pipe 36 is communicated with the gas mixing chamber 6. A flow sensor and an oxygen concentration sensor are provided on the air outlet pipe. The proportional valve 12, the flow sensor and the oxygen concentration sensor are all connected to the processor. The model of this processor is STM32F429IGT6.

[0045] An inlet channel 37 and a floating plug that can float on the water surface are provided on the container 8. When the water level in the container 8 reaches a certain height, the floating plug will block the inlet channel 37. The inlet channel 37 is located inside the container 8. An inlet 53 is provided on the container 8. The inlet 53 is communicated with the inlet channel 37. The container 8 has a water level line during normal use. When the water level in the container 8 reaches the water level line, the floating plug will block the inlet channel 37. When the water level in the container 8 drops and the floating plug drops, water will enter through the inlet channel 37 to make the water in the container 8 reach the water level line during normal use, and the floating plug will block the inlet channel 37 again.

[0046] The gas humidifying device 2 includes an infrared water level detection device 38. The principle of the infrared water level detection device 38 is to judge the water level in the container 8 by detecting the infrared reflectivity at different height positions of the container 8. In this embodiment, the infrared water level detection device 38 judges the water level in the container 8 by detecting the infrared reflectivity of the position of the container 8 above the water level line and the position of the container 8 below the water level line of the container 8. Specifically, the infrared water level detection device 38 includes two infrared transmitter-receivers 39. Both of the two infrared transmitter-receivers 39 are communicatively connected to the processor. The infrared transmitter-receiver 39 is used to emit infrared to the container 8 and receive the infrared reflected by the container 8. One of the infrared transmitter-receivers 39 is located at a height position above the water level line of the container 8 and not higher than the highest point of the container 8, and is used to detect the position of the container 8 above the water level line of the container 8. The other infrared transmitter-receiver 39 is located at a height position below the water level line of the container 8 and not lower than the lowest point of the container 8, and is used to detect the position of the container 8 below the water level line of the container 8. The two infrared transmitter-receivers 39 will transmit the received infrared data to the processor, and the processor will then calculate and compare the infrared data received by the two infrared transmitter-receivers 39. The distance between the infrared emission points of the two infrared transmitter-receivers 39 is not greater than 3 cm. When the surface of the container 8 has been used for a long time, dust may adhere to it, and the amount of dust adhered to different positions of the container 8 is different. By setting the distance between the infrared emission points of the two infrared transmitter-receivers 39 to be not greater than 3 cm, the two detection points of the container 8 are relatively close, and the amount of dust is also relatively close, improving the detection accuracy.

[0047] Since the container 8 has a normal water level line, after the water in the container 8 reaches this water level line, the floating plug will block the water inlet passage 37, so the water will not reach above the water level line of the container 8. The infrared water level detection device 38 judges the water level in the container 8 by detecting the infrared reflectivity of the position of the container 8 above the water level line and the position of the container 8 below the water level line of the container 8. Let the infrared reflectivity of the position of the container 8 above the water level line of the container 8 detected by the infrared water level detection device 38 be a, and the infrared reflectivity of the position of the container 8 below the water level line of the container 8 detected by the infrared water level detection device 38 be b. a is equivalent to the infrared reflectivity when the container 8 has no water. If a and b are the same, the water level has not reached the detected position of the container 8, and the water volume in the container 8 is insufficient. If a and b are different, the water level has reached the detected position of the container 8, and the water volume in the container 8 is sufficient. The infrared water level detection device 38 further includes a warning module. The warning module is connected to the processor. When a and b are the same, the processor sends a signal to the warning module, and the warning module will issue a low water level warning.

[0048] The humidifying breathing treatment apparatus further includes a housing 9, on which an inwardly recessed mounting position 40 is provided for mounting a container 8. The mounting position 40 includes a bottom panel 41, a rear panel 42, a left side panel 43 and a right side panel 44. The rear panel 42, the left side panel 43 and the right side panel 44 are all arranged above the bottom panel 41. The left side panel 43 and the right side panel 44 are respectively arranged on the left and right sides of the rear panel 42. A gas interface 45 is provided on the housing 9. The heating device 7 is arranged on the bottom panel 41. The container 8 is provided with a gas input pipe 51 and a gas output pipe 52. After the container 8 is mounted to the mounting position 40, the rear panel 42, the left side panel 43 and the right side panel 44 surround the side of the container 8, and the bottom panel 41 and the heating device 7 are located below the container 8. The gas interface 45 is connected to the gas input pipe 51. The infrared water level detection device 38 is arranged on the rear panel 42 and is arranged at a height not exceeding half of the rear panel 42. A receiving space 46 for receiving a part of the container 8 is provided on the rear panel 42, and the infrared water level detection device 38 is arranged in the receiving space 46. With the above structure, the settings of the bottom panel 41, the rear panel 42, the left side panel 43 and the right side panel 44 have a light-shielding effect, which can prevent the infrared water level detection device 38 from being affected by external light during the detection process, making the detection of the infrared water level detection device 38 more accurate. In addition, the setting of the receiving space 46 can further reduce the influence of external light on the detection and improve the detection accuracy of the infrared water level detection device 38. After the container 8 is mounted to the mounting position 40, a part of the container 8 will enter the receiving space 46, and the receiving space 46 can block the upward movement of the container 8, further improving the mounting stability of the container 8.

[0049] A limit button 3 is provided on the installation position 40. The limit button 3 is arranged on the outer side of the bottom panel 41. The limit button 3 is used to prevent the container 8 from moving horizontally outward from the installation position 40. The side surface of the container 8 is similar to the side surface of a frustum of a cone, so the side of the container 8 close to the limit button 3 is arranged in an arc shape, and the side of the limit button 3 close to the container 8 is also arranged in an arc shape. The radian of the side of the container 8 close to the limit button 3 is the same as the radian of the side of the limit button 3 close to the container 8, so that the contact surface when the limit button 3 touches the container 8 is more fitting. The limit button 3 is a self-locking switch button structure. By providing the limit button 3 with a self-locking switch button structure, when the limit button 3 is not pressed, the limit button 3 blocks the container 8 from moving horizontally outward from the installation position 40, which can prevent the container 8 from slipping off the installation position 40 when the instrument is moved. When the container 8 needs to be taken out, when the limit button 3 is pressed, the limit button 3 is locked, and the limit button 3 does not block the container 8 from moving horizontally outward from the installation position 40. At this time, the container 8 can be taken out. After the container 8 is installed back to the installation position 40, the limit button 3 is pressed again, and the limit button 3 is reset. A groove for accommodating the limit button 3 is provided on the installation position 40. The limit button 3 includes a left side plate 47 and a right side plate 48. The left side plate 47 and the right side plate 48 of the limit button 3 are arranged in an outwardly convex V shape. The shape of the groove matches the shape of the limit button 3. The V-shaped angle of the left side plate 47 and the right side plate 48 is greater than 90°. The left side plate 47 and the right side plate 48 are symmetrically arranged. The left side plate 47 includes a first panel 49 and a second panel 50. The first panel 49 and the second panel 50 form the V shape of the left side plate 47. The first panel 49 is located on the side close to the container 8, and the second panel 50 is located on the side far from the container 8. The length of the first panel 49 is less than the length of the second panel 50. With the above structure, the cooperation between the limit button 3 and the groove is more stable. The side of the limit button 3 far from the container 8 is arranged in an arc shape. The radian of the side of the limit button 3 far from the container 8 is less than the radian of the side of the limit button 3 close to the container 8. The length of the side of the limit button 3 far from the container 8 is greater than the length of the side of the limit button 3 close to the container 8. The length of the limit button 3 is greater than the length of the container 8. With the above structure, the limit button 3 can be better stressed when blocking the container 8, and the container 8 can be more effectively prevented from slipping.

[0050] The gas interface 45 is located on the back panel 42. The gas input pipeline 51 is arranged in an L shape. A gas inlet is provided on the gas input pipeline 51. After the container 8 is installed on the installation position 40, the gas inlet is inserted into the gas interface 45. The above structure can prevent the container 8 from moving upward, so that the installation of the container 8 is more stable.

[0051] The distance between the left panel 43 and the right panel 44 is greater than the length of the container 8. With the above structure, there are gaps between both the left panel 43 and the right panel 44 and the container 8. When disassembling and assembling the container 8, people's hands can reach into the gaps on both sides of the container 8, making the disassembly and assembly more convenient.

[0052] The heating pipe is connected to the gas output pipe 52 of the container 8. Temperature sensors are provided at both ends of the heating pipe, and a heating wire is arranged on the heating pipe. The heating wire is arranged in a spiral shape.

[0053] Working principle of the respiratory humidification treatment instrument of the present invention: High-pressure oxygen enters from the oxygen inlet element 13. The high-pressure oxygen passes through the oxygen inlet element 13. On the one hand, it flows out from the first air outlet 20, enters the first-stage filtration and decompression after passing through the filter element 14 and then enters the first space 10, and then flows from the first space 10 to the second space 11. On the other hand, it enters the oxygen pressure detection channel 21 from the second air outlet 22. After passing through the oxygen pressure detection channel 21, the high-pressure oxygen reaches the oxygen pressure detection device, and the oxygen pressure detection can detect the pressure value of the high-pressure oxygen. During the process of the high-pressure oxygen flowing from the first space 10 to the second space 11, it will first pass through the proportional valve 12. The proportional valve 12 is used to control the flow rate of the high-pressure oxygen. After the high-pressure oxygen reaches the second space 11, since the filter 31 is provided in the second space 11, the filter 31 plays a role in secondary filtration and decompression of the high-pressure oxygen. The high-pressure oxygen after passing through the filter 31 reaches the three-channel structure and finally enters the gas mixing chamber 6. Since the stirring device in the gas mixing chamber 6 is constantly rotating, due to the action of air pressure, air is inhaled from the air passage. The air first enters from the air inlet 32. The air passing through the air inlet 32 enters the third space 33. The temperature and humidity sensor 35 in the third space 33 can detect the temperature and humidity of the air. The air then enters the fourth space 34 from the third space 33. After passing through the fourth space 34, the air reaches the tee pipe structure and finally enters the gas mixing chamber 6. The high-pressure oxygen and air are mixed under the action of the stirring device, and the mixed gas is transported to the outlet pipe. The flow sensor and oxygen concentration sensor on the outlet pipe are used to detect the flow rate and oxygen concentration of the mixed gas. The flow sensor and oxygen concentration sensor feedback the detected data to the processor, and the processor then adjusts the proportional valve 12 according to the detection data of the flow sensor and oxygen concentration sensor, so that the flow rate and oxygen concentration of the gas after mixing oxygen and air are more stable. The mixed gas enters the gas humidifying device 2 from the outlet pipe for humidification, and the humidified mixed gas enters the heating pipe. The heating pipe heats the mixed gas to a suitable temperature and then outputs it.The infrared emitter-receiver 39 at a height position above the water level line of the container 8 emits infrared rays towards the container 8. After the container 8 reflects the infrared rays, the infrared emitter-receiver 39 receives the infrared reflected rays of the container 8. Since a floating plug is arranged inside the container 8, the water in the container 8 will not reach above the water level line. Therefore, it is equivalent to obtaining the infrared reflectivity when there is no water in the container 8. The infrared emitter-receiver 39 at a height position below the water level line of the container 8 emits infrared rays towards the container 8. After the container 8 reflects the infrared rays, the infrared emitter-receiver 39 receives the infrared reflected rays of the container 8, and the infrared reflectivity at this height position of the container 8 is obtained. If the infrared reflectivity at this height position is the same as the infrared reflectivity when there is no water in the container 8, it proves that the water level of the container 8 has not reached this height position. At this time, a low water level warning will be issued, and water needs to be replenished to the container 8. If the infrared reflectivity at this height position is different from the infrared reflectivity when there is no water in the container 8, it proves that the water level of the container 8 has reached this height position, and the water volume in the container 8 is sufficient.

[0054] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention fall within the scope of protection required by the present invention.

Claims

1. A respiratory humidification treatment device, characterized in that: It includes a gas mixing device, a gas humidifying device and a gas output device, and the gas mixing device, the gas humidifying device and the gas output device are connected in sequence; the gas mixing device includes an oxygen input device, an air input device, a gas mixing chamber, a processor and an air outlet pipe, the oxygen input device, the air input device and the air outlet pipe are all communicated with the gas mixing chamber, a proportional valve for controlling the oxygen flow rate is arranged on the oxygen input device, a flow sensor and an oxygen concentration sensor are arranged on the air outlet pipe, a stirring device is arranged inside the gas mixing chamber, the gas humidifying device includes a heating device and a container, the heating device is used for heating the liquid inside the container, the gas output device includes a heating pipe, the heating pipe is communicated with the inside of the container, the gas humidifying device includes an infrared water level detection device, the infrared water level detection device judges the water level in the container by detecting the infrared reflectivity at different height positions of the container, and the proportional valve, the flow sensor, the oxygen concentration sensor and the infrared water level detection device are all connected to the processor; The oxygen input device includes a first space and a second space, the first space is communicated with the second space, a proportional valve is arranged between the first space and the second space, an oxygen inlet is arranged on the first space, and an oxygen outlet is arranged on the second space; The oxygen input device includes an oxygen inlet element and a filtering element, the filtering element is arranged on the oxygen inlet element, the filtering element is detachably connected to the oxygen inlet element, and the oxygen inlet element is arranged on the oxygen inlet; The oxygen inlet element includes a front end part, a middle part, a rear end part and an oxygen channel, the front end part, the middle part and the rear end part are connected in sequence, the oxygen channel penetrates through the front end part and the middle part, a first air outlet is arranged on the side surface of the middle part, the first air outlet is communicated with the oxygen channel, the filtering element is sleeved on the middle part and covers the first air outlet, when the oxygen inlet element is installed on the oxygen inlet, the front end part is located outside the first space, the middle part and the rear end part are located inside the first space, and the first air outlet is communicated with the first space; a filter is arranged inside the second space.

2. The respiratory humidification treatment apparatus according to claim 1, wherein: The oxygen input device includes an oxygen pressure detection device, an oxygen pressure detection channel is arranged on the first space, the oxygen pressure detection channel is communicated with the first space, and the oxygen pressure detection channel is used for leading oxygen to the oxygen pressure detection device.

3. The respiratory humidification treatment apparatus according to claim 1, wherein: A temperature and humidity sensor is arranged inside the air input device.

4. The respiratory humidification treatment apparatus according to claim 1, wherein: The infrared water level detection device judges the water level in the container by detecting the infrared reflectivity of the container position above the water level line of the container and the container position below the water level line of the container.

5. The humidifying and breathing therapeutic apparatus according to claim 4, characterized in that: The infrared water level detection device includes a plurality of infrared transmitting and receiving devices, the infrared transmitting and receiving devices are all communicatively connected to the processor, and the infrared transmitting and receiving devices are used for emitting infrared to the container and receiving the infrared reflected by the container.

6. The humidifying respiratory therapy apparatus according to claim 5, characterized in that: The infrared water level detection device includes two infrared emitter-receivers, one of which is located above the water level of the container and at a height not higher than the highest point of the container, and the other is located below the water level of the container and at a height not lower than the lowest point of the container.

7. The humidifying respiratory therapy apparatus according to claim 1, characterized in that: An inlet channel and a floating plug that can float on the water surface are provided on the container; when the water level in the container reaches a certain height, the floating plug will block the inlet channel.

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