Atomization humidifying device, control method thereof and breathing machine

Abstract

The invention relates to an atomization humidifying device, a control method thereof and a breathing machine. The atomization humidification device comprises a water tank, an atomization heating module and a ventilation pipe. A liquid outlet is formed in the bottom of the water tank; the atomization heating module is arranged at the bottom of the water tank in a sealed mode, the atomization heating module comprises a heating piece and an atomization piece which are sequentially stacked in the height direction, the atomization piece is provided with a liquid inlet and a mist outlet, the liquid inlet is communicated with the liquid outlet, and the heating piece is used for heating liquid of the liquid inlet or water mist of the mist outlet; the ventilation pipe is in sealed connection with the atomization heating module, and a mist outlet of the atomization piece communicates with the interior of the ventilation pipe. According to the atomization piece, the liquid is directly changed into tiny liquid drops in an ultrasonic atomization mode or a piezoelectric ceramic atomization mode, heating is not needed, and then the problem that the steam temperature of the liquid generated in a heating mode is too high or the liquid is easily condensed into the liquid drops can be solved. The heating piece is used for heating the water mist, so that the temperature of gas entering the body of the patient through the ventilation pipe meets the requirement.

Description

Technical Field

[0001] The present application relates to the technical field of ventilators, and in particular to an atomizing humidification device and a control method thereof, and a ventilator. Background Art

[0002] A non-invasive ventilator is a medical device suitable for treating mild to moderate chronic obstructive pulmonary disease, neuromuscular disease or amyotrophic lateral sclerosis, obesity-induced hypoventilation, and Cheyne-Stokes respiratory disease. To ensure long-term, normal use of the ventilator, non-invasive ventilators are typically equipped with a humidifier to increase the humidity of the inhaled air, thereby improving treatment comfort and providing a better breathing experience.

[0003] In related technologies, the humidification water tank equipped with a ventilator usually uses heating to evaporate water into water vapor, and then carries the water vapor out through airflow to achieve a humidification effect.

[0004] However, the water vapor generated by this humidification method is of high temperature and cannot be directly inhaled by the patient through the ventilator. After cooling, it is easy to condense into water droplets, thereby increasing the air resistance of the ventilator ventilation tube and affecting the ventilation effect. Summary of the Invention

[0005] Based on this, it is necessary to provide an atomizing humidification device and a control method thereof, and a ventilator to address the problem of poor ventilation effect caused by using heating to generate water vapor.

[0006] An atomizing humidifying device, comprising:

[0007] A water tank for holding liquid, with a liquid outlet provided at the bottom of the water tank;

[0008] An atomizing heating module is provided at the bottom of the water tank. The atomizing heating module includes a heating plate and an atomizing plate stacked in sequence along the height direction. The atomizing plate has a liquid inlet and a mist outlet. The liquid inlet is connected to the liquid outlet. The side of the atomizing plate provided with the liquid inlet is sealed with the bottom of the water tank. The heating plate is used to heat the liquid in the liquid inlet or the water mist at the mist outlet.

[0009] A ventilation pipe, the interior of which is communicated with the mist outlet, and the ventilation pipe is sealedly connected to a side of the atomizing plate where the mist outlet is provided.

[0010] In one embodiment, the heating plate is sandwiched between the atomizing plate and the bottom of the water tank; a flow port is opened on the heating plate, and the liquid outlet and the liquid inlet are respectively connected to the flow port;

[0011] The bottom of the water tank and the side of the atomizing plate where the liquid inlet is provided are sealedly connected to both sides of the heating plate respectively.

[0012] In one embodiment, the ventilation pipe includes a connecting pipe section and a heating pipe section connected in sequence, the atomizing heating module is connected to the connecting pipe section, and the heating pipe section is arranged on a side of the connecting pipe section close to the breathing mask.

[0013] In one embodiment, the ventilation pipe includes a first pipe section, a second pipe section and a third pipe section connected in sequence, the height of the second pipe section is lower than the first pipe section and the third pipe section, the second pipe section is sealedly connected to the side of the atomizing plate where the mist outlet is provided, and a drain outlet is provided at the bottom of the second pipe section.

[0014] In one embodiment, a second temperature and humidity sensor is provided in the first pipe section, and a first temperature and humidity sensor is provided in the third pipe section;

[0015] The atomizing and humidifying device includes a controller, which is electrically connected to the first temperature and humidity sensor, the second temperature and humidity sensor, and the atomizing and heating module, respectively. The controller is used to control the power of the atomizing and heating module according to the temperature and humidity in the third pipe segment detected by the first temperature and humidity sensor, and to adjust the power of the atomizing and heating module according to the temperature and humidity in the first pipe segment detected by the second temperature and humidity sensor.

[0016] In one embodiment, the atomizing humidifying device includes a display screen, which is electrically connected to the controller, and a temperature button and a humidity button are provided on the display screen.

[0017] In one embodiment, a liquid level sensor is provided in the water tank; the atomizing humidification device includes an alarm, and a controller is electrically connected to the liquid level sensor and the alarm respectively, and the controller controls the alarm to sound an alarm according to the liquid level information detected by the liquid level sensor.

[0018] In one embodiment, the liquid level sensor includes a Hall sensor, a limit column and a float, the Hall sensor is arranged at the bottom of the water tank, the limit column is arranged in the water tank, the limit column has a hollow cavity connected to the water tank, the limit column extends in a vertical direction, the float is movably arranged in the hollow cavity, and the density of the float is less than the density of the liquid.

[0019] In one embodiment, the atomizing heating module includes an atomizing sheet cover plate, a placement cavity is opened in the middle of the atomizing sheet cover plate, the atomizing sheet is embedded in the placement cavity, one side of the atomizing sheet cover plate is sealed connected to the heating sheet, and the other side of the atomizing sheet cover plate is sealed connected to the ventilation pipe.

[0020] In one embodiment, the water tank includes a tank body and a tank cover, and the tank cover is detachably arranged on the tank body.

[0021] A method for controlling an atomizing humidifying device, the atomizing humidifying device comprising a controller, a second temperature and humidity sensor being provided at the outlet of the vent pipe, a first temperature and humidity sensor being provided at the inlet of the vent pipe, the controller being electrically connected to the first temperature and humidity sensor, the second temperature and humidity sensor, and the atomizing heating module, respectively;

[0022] The control method comprises the following steps:

[0023] The controller obtains a first detection value of the first temperature and humidity sensor, and compares the first detection value with a target value to control the power of the atomizing heating module;

[0024] The controller obtains a second detection value of the second temperature and humidity sensor, and compares the second detection value with a target value to adjust the power of the atomizing heating module.

[0025] A ventilator comprises a ventilator body, a breathing mask and an atomizing humidifying device. One end of the ventilation tube is connected to the breathing mask, and the other end is connected to the ventilator body.

[0026] The above-mentioned atomizing humidification device and its control method, as well as the ventilator, the liquid in the water tank enters the liquid inlet of the atomizing plate through the liquid outlet, the atomizing plate converts the liquid into water mist, and sprays it into the ventilation pipe from the mist outlet. The atomizing plate uses ultrasonic atomization or piezoelectric ceramic atomization to directly turn the liquid into tiny droplets, that is, no heating is required, thereby avoiding the problem that the liquid vapor generated by heating is too hot or easily condensed into droplets. In addition, the heating plate and the atomizing plate are stacked in sequence at the bottom of the water tank to heat the liquid entering the atomizing plate or the water mist at the outlet of the atomizing plate, thereby ensuring that the temperature and humidity of the gas entering the patient's body through the ventilation pipe meet the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the structure of an atomizing humidifying device in one embodiment.

[0028] Figure 2 Schematic diagram of the internal structure of an atomizing humidification device in one embodiment.

[0029] Figure 3 Schematic diagram of the exploded structure of an atomizing humidification device in one embodiment.

[0030] Figure 4 FIG. 1 is a schematic diagram of circuit connections in one embodiment.

[0031] Reference numerals: 100, water tank; 110, tank body; 111, liquid outlet; 120, tank cover;

[0032] 200, atomizing heating module; 210, heating plate; 211, flow port; 220, atomizing plate; 221, liquid inlet; 222, mist outlet; 230, atomizing plate cover; 240, sealing gasket;

[0033] 300, ventilation pipe; 310, connecting pipe section; 311, second temperature and humidity sensor; 312, first temperature and humidity sensor; 313, first pipe section; 314, second pipe section; 315, third pipe section; 320, heating pipe section; 330, float;

[0034] 410, display screen; 420, controller; 430, alarm;

[0035] 500, liquid level sensor; 510, Hall sensor; 520, limit column; 530, float;

[0036] 610. Respirator; 620. Respirator body. DETAILED DESCRIPTION

[0037] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0038] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0039] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0040] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0041] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0042] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0043] See Figure 1-Figure 3An embodiment of the present application provides an atomizing humidifying device, which includes a water tank 100, an atomizing heating module 200, and a vent pipe 300. The water tank 100 is used to hold liquid, and a liquid outlet 111 is provided at the bottom of the water tank 100; the atomizing heating module 200 is arranged at the bottom of the water tank 100, and the atomizing heating module 200 includes a heating plate 210 and an atomizing plate 220 stacked in sequence along the height direction, the atomizing plate 220 having a liquid inlet 221 and a mist outlet 222, the liquid inlet 221 being connected to the liquid outlet 111, and the side of the atomizing plate 220 provided with the liquid inlet 221 being sealed with the bottom of the water tank 100, and the heating plate 210 being used to heat the liquid inlet 221 or the water mist at the mist outlet 222; the interior of the vent pipe 300 is connected to the mist outlet 222, and the vent pipe 300 is sealed with the side of the atomizing plate 220 provided with the mist outlet 222.

[0044] In this embodiment, the liquid in the water tank 100 enters the liquid inlet 221 of the atomizer 220 through the liquid outlet 111. The atomizer 220 converts the liquid into water mist and sprays it into the ventilation pipe 300 from the mist outlet 222. The atomizer 220 uses ultrasonic atomization or piezoelectric ceramic atomization to directly turn the liquid into tiny droplets, that is, no heating is required, thereby avoiding the problem that the liquid vapor generated by heating is too hot or easily condensed into droplets. In addition, the heating plate 210 and the atomizer 220 are stacked in sequence at the bottom of the water tank 100 to heat the liquid entering the atomizer 220 or the water mist at the outlet of the atomizer 220, so that the temperature and humidity of the gas entering the patient's body through the ventilation pipe 300 meet the requirements.

[0045] Furthermore, the atomizer plate 220 of the present application is arranged at the liquid outlet 111 of the water tank 100, that is, the atomizer plate 220 isolates water vapor from each other, and the water in the water tank 100 will not cause damage to the ventilator. At the same time, there is no need to design a multi-channel for the ventilation tube 300, and the structure is simple.

[0046] In some embodiments, the heating plate 210 is sandwiched between the atomizing plate 220 and the bottom of the water tank 100; a flow port 211 is opened on the heating plate 210, and the liquid outlet 111 and the liquid inlet 221 are respectively connected to the flow port 211; the two sides of the heating plate 210 are respectively sealed with the bottom of the water tank 100 and the side of the atomizing plate 220 where the liquid inlet 221 is provided.

[0047] In this embodiment, the heating plate 210 is sealed and connected to the bottom of the water tank 100 by bonding, welding or screw connection. Preferably, the heating plate 210 is bonded to the bottom of the water tank 100, which can effectively ensure the sealing effect of the heating plate 210 and the water tank 100. A flow port 211 is provided in the middle of the heating plate 210. When the liquid from the liquid outlet 111 enters the liquid inlet 221 through the flow port 211, the heating plate 210 can heat the liquid passing through the flow port 211, thereby making the temperature of the water mist passing through the mist outlet 222 of the atomizing plate 220 meet the requirements. The bottom of the atomizing plate 220 is sealed and connected to the vent pipe 300, that is, the water mist sprayed through the mist outlet 222 can directly enter the vent pipe 300.

[0048] Among them, the atomizing plate 220 needs to vibrate to break the liquid into small particles. The atomization process takes a certain amount of time, so the liquid in the liquid inlet 221 needs a certain amount of time to be atomized. During this process, the heating plate 210 is set on the side close to the liquid inlet 221, and can use the atomization time to heat the liquid in the liquid inlet 221, thereby ensuring the temperature of the water mist at the mist outlet 222.

[0049] In some other embodiments, the atomizing plate 220 is arranged on the side of the heating plate 210 close to the water tank 100, and the atomizing plate 220 is sealed to the bottom of the water tank 100. The liquid entering the liquid inlet 221 from the liquid outlet 111 is atomized by the atomizing plate 220 and becomes water mist. The water mist is heated by the heating plate 210 and enters the ventilation pipe 300.

[0050] It should be noted that the heating temperature of the heating plate 210 does not exceed 60 degrees Celsius. Liquid medicine can be added to the water tank 100, and the liquid medicine is atomized by the atomizing plate 220 to form fine particles of atomized liquid medicine, which can also be inhaled by the patient through the ventilation tube 300.

[0051] Combine Figure 1 and Figure 2 In some embodiments, the ventilation pipe 300 includes a connecting pipe section 310 and a heating pipe section 320 connected in sequence, the atomizing heating module 200 is connected to the connecting pipe section 310, and the heating pipe section 320 is arranged on a side of the connecting pipe section 310 close to the breathing mask 610.

[0052] In this embodiment, one end of the ventilation tube 300 is connected to the ventilator body 620 and the other end to the breathing mask 610. A water tank 100 is connected to the ventilation tube 300 between the ventilator and the breathing mask 610. Water mist at a predetermined temperature generated in the water tank 100 enters the ventilation tube 300 and, driven by the gas blown out of the ventilator body 620, flows toward the breathing mask 610 to provide the patient with gas meeting a predetermined temperature and humidity. A heating pipe section 320 is located on one side of the breathing mask 610 to prevent the atomized water mist from condensing into droplets during circulation, which could affect the patient's breathing.

[0053] Specifically, the heating tube section 320 includes an inner tube and a heating wire wound around the inner tube. The heating wire is used to heat the inner tube to maintain the temperature of the gas passing through the heating tube, thereby preventing the atomized water mist from condensing into condensed droplets during circulation. The heating temperature of the heating tube does not exceed 40 degrees Celsius.

[0054] In some embodiments, the ventilation pipe 300 includes a first pipe section 313, a second pipe section 314 and a third pipe section 315 connected in sequence, the height of the second pipe section 314 is lower than the first pipe section 313 and the third pipe section 315, the second pipe section 314 is sealedly connected to the side of the atomizing plate 220 where the mist outlet 222 is provided, and a liquid discharge port is provided at the bottom of the second pipe section 314.

[0055] Specifically, the connecting pipe section 310 includes a first pipe section 313, a second pipe section 314, and a third pipe section 315, which are connected in sequence. The second pipe section 314 is lower than the first and third pipe sections 313, 315. The end of the first pipe section 313 away from the second pipe section 314 is connected to the heating pipe section 320. In other words, the first pipe section 313, the second pipe section 314, and the third pipe section 315 are connected in sequence to form a U-shaped pipe. When the ambient temperature is low (such as in winter), the temperature inside the vent pipe 300 cannot reach the target temperature, causing condensation to form inside the vent pipe 300. At this time, since the second pipe section 314 is at the lowest height, the condensation will be concentrated in the second pipe section 314 and discharged from the drain port, thereby effectively reducing the air resistance of the vent pipe 300 and minimizing the impact on the ventilation effect. Of course, if the water tank 100 leaks or the heating function of the heater 210 fails, the U-shaped connecting pipe section 310 can also be used to drain the condensation.

[0056] Furthermore, the inner wall of the second pipe section 314 is inclined, and the drain port is located at the lowest position of the inclined inner wall, so that condensed water can flow to the drain port under the action of gravity. Specifically, the drain port is located in the middle of the second pipe section 314, and the inner wall of the second pipe section 314 is relatively high at both ends, and relatively low in the middle.

[0057] Furthermore, the drain port is provided with a float 330. When the condensed water accumulates to a certain height, the buoyancy of the water can be utilized to make the float 330 float up, thereby allowing the condensed water to be discharged from the drain port.

[0058] In some other embodiments, the first pipe section 313 is arranged at an angle, that is, the end of the first pipe section 313 close to the heating tube is higher than the end of the first pipe section 313 close to the second pipe section 314, so that the condensed water in the first pipe section 313 can also flow into the second pipe section 314.

[0059] In other embodiments, the connecting pipe section 310 may also be a V-shaped structure or an arc-shaped structure, and the drain port is provided at the lowest position of the connecting pipe section 310 .

[0060] In some embodiments, the atomizing humidification device includes a controller 420, which is arranged on the outer wall of the water tank 100; a second temperature and humidity sensor 311 is arranged in the first pipe section 313, and a first temperature and humidity sensor 312 is arranged in the third pipe section 315. The controller 420 is electrically connected to the second temperature and humidity sensor 311, the first temperature and humidity sensor 312 and the atomizing heating module 200 respectively. The controller 420 is used to control the power of the atomizing heating module 200 according to the temperature and humidity detected by the first temperature and humidity sensor 312, and to adjust the power of the atomizing heating module 200 according to the temperature and humidity detected by the second temperature and humidity sensor 311.

[0061] Specifically, the controller 420 can be a control board PCBA. The first temperature and humidity sensor 312 is arranged in the third pipe section 315, which is used to detect the temperature and humidity of the air at the inlet of the ventilation pipe 300. The second temperature and humidity sensor 311 is arranged in the first pipe section 313, which is used to detect the temperature and humidity of the air at the outlet of the ventilation pipe 300. The controller 420 is electrically connected to the atomizing plate 220 and the heating plate 210 respectively. The controller 420 is used to control the power of the atomizing plate 220 and the heating plate 210 respectively according to the temperature and humidity at the inlet of the ventilation pipe 300 detected by the first temperature and humidity sensor 312; and at the same time, the temperature and humidity at the outlet of the ventilation pipe 300 are detected by the second temperature and humidity sensor 311, and the temperature and humidity values at the outlet of the ventilation pipe 300 are compared with the target values, thereby adjusting the power of the atomizing plate 220 and the heating plate 210.

[0062] Specifically, taking the example of the controller 420 obtaining the values of a first temperature and humidity sensor 312 and a second temperature and humidity sensor 311 every second, the controller 420 first controls the power of the atomizing plate 220 and the heating plate 210 according to the temperature and humidity at the inlet of the ventilation pipe 300 detected by the first temperature and humidity sensor 312, so that the atomizing plate 220 and the heating plate 210 perform work to change the temperature and humidity at the outlet of the ventilation pipe 300; then the temperature and humidity at the outlet of the ventilation pipe 300 detected by the second temperature and humidity sensor 311 are compared with the target value. If the temperature and humidity values at the outlet of the ventilation pipe 300 are greater than the target value, the power of the atomizing plate 220 and the heating plate 210 is reduced; if the temperature and humidity values at the outlet of the ventilation pipe 300 are equal to the target value, the power of the atomizing plate 220 and the heating plate 210 is kept unchanged; if the temperature and humidity values at the outlet of the ventilation pipe 300 are less than the target value, the power of the atomizing plate 220 and the heating plate 210 is increased.

[0063] Further, combined Figure 1 and Figure 4 The atomizing humidifying device includes a display screen 410 , which is electrically connected to a controller 420 , and a temperature button and a humidity button are provided on the display screen 410 .

[0064] The temperature and humidity of the gas in the ventilation tube 300 are detected by the second temperature and humidity sensor 311 and, after processing, can be displayed on the display screen 410, allowing medical staff to understand the temperature and humidity of the gas entering the patient's airway at any time. In addition, medical staff can also set a specific temperature and humidity on the display screen 410. The controller 420 then adjusts the power of the heating plate 210 or the connecting pipe section 310 according to the set temperature value to ensure that the temperature of the gas in the ventilation tube 300 reaches the set temperature. Similarly, the controller 420 can also adjust the power of the atomizing plate 220 according to the set humidity value to ensure that the humidity of the gas in the ventilation tube 300 reaches the set humidity.

[0065] In some embodiments, a liquid level sensor 500 is provided in the water tank 100; the atomizing humidification device includes an alarm 430, and the controller 420 is electrically connected to the liquid level sensor 500 and the alarm 430 respectively. The controller 420 controls the alarm 430 to alarm according to the liquid level information detected by the liquid level sensor 500.

[0066] In this embodiment, after the liquid in the water tank 100 is atomized, the liquid level gradually decreases. When the liquid level drops to a preset minimum level, the alarm 430 sounds an alarm, reminding medical staff to add liquid or to control the ventilator to shut down through the controller 420. The alarm 430 may sound an alarm in the form of a speaker, a light alarm, a video display alarm, or a combination of sound and light alarms.

[0067] Further, combined Figure 2 and Figure 3 The liquid level sensor 500 includes a Hall sensor 510, a limit column 520 and a float 530. The Hall sensor 510 is arranged at the bottom of the water tank 100, and the limit column 520 is arranged in the water tank 100. The limit column 520 has a hollow cavity connected to the water tank 100. The limit column 520 extends in a vertical direction. The float 530 is movably arranged in the hollow cavity. The density of the float 530 is less than the density of the liquid.

[0068] In this embodiment, the Hall sensor 510 is disposed on the outer side of the bottom wall of the water tank 100, and a permanent magnet is disposed on the float 530. The limiting post 520 is fixed vertically within the water tank 100, and the hollow cavity within the limiting post 520 is in communication with the water tank 100, that is, water in the water tank 100 can enter the limiting post 520. Since the density of the float 530 is less than that of the liquid, the float 530 can float on the liquid. When the liquid level drops, the float 530 can simultaneously drop within the hollow cavity. When the float 530 drops to a certain height, it can be detected by the Hall sensor 510, thereby triggering the alarm 430 to prevent damage to the components of the atomizing heating module 200 due to water shortage.

[0069] Specifically, the limiting post 520 is a hollow cylindrical structure, located inside the bottom of the tank 110, with its axis aligned with the axis of the Hall effect sensor 510. The limiting post 520 is sealed at the top and bottom, allowing the float 530 to move up and down only within the limiting post 520. A water inlet hole is defined at the bottom of the limiting post 520, the diameter of which is smaller than that of the float 530. This allows water from the water tank 100 to enter the limiting post 520, but prevents the float 530 from moving outside the limiting post 520.

[0070] In other embodiments, the liquid level sensor 500 may also be a capacitive liquid level sensor 500, an ultrasonic liquid level sensor 500, a piezoelectric liquid level sensor 500, a conductive liquid level sensor 500, or a radar liquid level sensor 500. The liquid level sensor 500 is used to detect the lowest liquid level in the water tank 100 or detect the liquid level in real time.

[0071] Specifically, the display screen 410 is disposed outside the side wall of the water tank 100 , the controller 420 is electrically connected to the water tank 100 , and the alarm 430 is disposed on the display screen 410 .

[0072] In some embodiments, the atomizing heating module 200 includes an atomizing sheet cover 230, a placement cavity is opened in the middle of the atomizing sheet cover 230, the atomizing sheet 220 is embedded in the placement cavity, one side of the atomizing sheet cover 230 is sealed connected to the heating sheet 210, and the other side of the atomizing sheet cover 230 is sealed connected to the ventilation pipe 300.

[0073] In this embodiment, the atomizing plate cover 230 is bonded, welded or screwed to the heating plate 210 .

[0074] Specifically, the atomizing and heating module 200 includes a sealing gasket 240 , and the other side of the atomizing plate cover 230 is sealedly connected to the ventilation pipe 300 through the sealing gasket 240 .

[0075] A flange is provided on the ventilation pipe 300, and the atomizer cover plate 230 is connected to the flange by screws. A sealing gasket 240 is provided between the cover plate and the flange to achieve a sealed connection between the atomizer cover plate 230 and the flange.

[0076] In some embodiments, the water tank 100 includes a tank body 110 and a tank cover 120 , and the tank cover 120 is detachably disposed on the tank body 110 .

[0077] In this embodiment, a detachable tank cover 120 is used, which makes it easy to add water to the inside of the water tank 100 or clean the inside after removing the tank cover 120.

[0078] An embodiment of the present application also provides a control method for a misting and humidifying device, which includes a controller 420, a second temperature and humidity sensor 311 is provided at the outlet of the ventilation pipe 300, and a first temperature and humidity sensor 312 is provided at the inlet of the ventilation pipe 300, and the controller 420 is electrically connected to the second temperature and humidity sensor 311, the first temperature and humidity sensor 312 and the misting and heating module 200, respectively; the control method includes the following steps: the controller 420 controls the power of the misting and heating module 200 according to the temperature and humidity at the outlet of the ventilation pipe 300 detected by the first temperature and humidity sensor 312, and adjusts the power of the misting and heating module 200 according to the temperature and humidity at the inlet of the ventilation pipe 300 detected by the second temperature and humidity sensor 311, that is, through the detection of the second temperature and humidity sensor 311 and the first temperature and humidity sensor 312, it is convenient to adjust the power of the misting and heating module 200 in real time according to the detection results, thereby reducing power consumption.

[0079] Combine Figure 2 An embodiment of the present application further provides a ventilator, including a ventilator body 620, a breathing mask 610 and an atomizing humidifying device, one end of the ventilation tube 300 is connected to the breathing mask 610, and the other end is connected to the ventilator body 620.

[0080] In this embodiment, one end of the ventilation tube 300 is connected to the ventilator body 620, and the other end is connected to the breathing mask 610. The water tank 100 is connected to the ventilation tube 300 between the ventilator body 620 and the breathing mask 610. The water mist of a certain temperature generated in the water tank 100 enters the ventilation tube 300. When the gas in the ventilator body 620 flows, it can drive the water mist, thereby providing the patient with gas that meets a certain temperature and humidity.

[0081] During actual use, the ventilator blows air into the ventilation tube 300. Medical staff set the atomization power of the atomizer 220 and the target temperature and target humidity of the heating plate 210 on the display screen 410. The atomizer 220 and the heating plate 210 start to work to blow out a certain amount of heated water mist; when the ventilator airflow passes under the atomizer 220, it will also take away the water mist to form humidified gas that meets the temperature and humidity settings; after the humidified gas passes through the connecting pipe section 310, it will flow into the heating pipe section 320, so that the temperature can be maintained and condensed water will not be formed, and the humidified gas will eventually be delivered to the patient's airway.

[0082] Furthermore, after prolonged atomization, the water level in water tank 100 gradually decreases. When the water level drops to the position of float 530, float 530 will drop along with the water level. When float 530 drops into the sensing range of Hall effect sensor 510, Hall effect sensor 510 is triggered. When Hall effect sensor 510 is triggered, controller 420 issues a command to stop atomizing plate 220 and heating plate 210, thereby effectively preventing damage to atomizing plate 220. Simultaneously, controller 420 controls the speaker to sound an audible alarm and displays a visual alarm on display screen 410, reminding the user to add water to the water tank.

[0083] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0084] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. An atomizing humidifying device, characterized in that: The atomizing humidifying device comprises: A water tank (100) is used to hold liquid, and a liquid outlet (111) is provided at the bottom of the water tank (100); An atomizing heating module (200) is arranged at the bottom of the water tank (100), and the atomizing heating module (200) includes a heating plate (210) and an atomizing plate (220) stacked in sequence along the height direction, the atomizing plate (220) has a liquid inlet (221) and a mist outlet (222), the liquid inlet (221) is communicated with the liquid outlet (111), and the side of the atomizing plate (220) provided with the liquid inlet (221) is sealed with the bottom of the water tank (100), and the heating plate (210) is used to heat the liquid in the liquid inlet (221) or the water mist at the mist outlet (222); A vent pipe (300), the interior of the vent pipe (300) is communicated with the mist outlet (222), and the vent pipe (300) is sealedly connected to a side of the atomizing plate (220) provided with the mist outlet (222).

2. The atomizing humidifying device according to claim 1, characterized in that: The heating plate (210) is sandwiched between the atomizing plate (220) and the bottom of the water tank (100); a circulation port (211) is provided on the heating plate (210); the liquid outlet (111) and the liquid inlet (221) are respectively connected to the circulation port (211); Both sides of the heating plate are sealedly connected to the bottom of the water tank (100) and one side of the atomizing plate (220) provided with the liquid inlet (221), respectively.

3. The atomizing humidifying device according to claim 1, characterized in that: The ventilation pipe (300) comprises a connecting pipe section (310) and a heating pipe section (320) connected in sequence, the atomizing heating module (200) is connected to the connecting pipe section (310), and the heating pipe section (320) is arranged on a side of the connecting pipe section (310) close to the breathing mask (610).

4. The atomizing humidifying device according to claim 1, characterized in that: The vent pipe (300) comprises a first pipe section (313), a second pipe section (314), and a third pipe section (315) connected in sequence, wherein the height of the second pipe section (314) is lower than the first pipe section (313) and the third pipe section (315), and the second pipe section (314) is sealedly connected to a side of the atomizing plate (220) provided with the mist outlet (222), and a liquid discharge port is provided at the bottom of the second pipe section (314).

5. The atomizing humidifying device according to claim 4, characterized in that: A second temperature and humidity sensor (311) is provided in the first pipe section (313), and a first temperature and humidity sensor (312) is provided in the third pipe section (315); The atomizing and humidifying device includes a controller (420), the controller (420) being electrically connected to the first temperature and humidity sensor (312), the second temperature and humidity sensor (311), and the atomizing and heating module (200), respectively. The controller (420) is used to control the power of the atomizing and heating module (200) according to the temperature and humidity in the third pipe section (315) detected by the first temperature and humidity sensor (312), and to adjust the power of the atomizing and heating module (200) according to the temperature and humidity in the first pipe section (313) detected by the second temperature and humidity sensor (311).

6. The atomizing humidifying device according to claim 1, characterized in that: A liquid level sensor (500) is provided in the water tank (100); the atomizing humidifying device includes an alarm (430); a controller (420) is electrically connected to the liquid level sensor (500) and the alarm (430), respectively; and the controller (420) controls the alarm (430) to sound an alarm based on liquid level information detected by the liquid level sensor (500).

7. The atomizing humidifying device according to claim 6, characterized in that: The liquid level sensor (500) comprises a Hall sensor (510), a limiting column (520) and a float (530); the Hall sensor (510) is arranged at the bottom of the water tank (100); the limiting column (520) is arranged in the water tank (100); the limiting column (520) has a hollow cavity connected to the water tank (100); the limiting column (520) extends in a vertical direction; the float (530) is movably arranged in the hollow cavity; and the density of the float (530) is less than the density of the liquid.

8. The atomizing humidifying device according to claim 1, characterized in that: The atomizing and heating module (200) comprises an atomizing sheet cover plate (230), a placement cavity is provided in the middle of the atomizing sheet cover plate (230), the atomizing sheet (220) is embedded in the placement cavity, one side of the atomizing sheet cover plate (230) is sealedly connected to the heating sheet (210), and the other side of the atomizing sheet cover plate (230) is sealedly connected to the ventilation pipe (300).

9. A control method for the atomizing humidifying device according to any one of claims 1 to 8, characterized in that: The atomizing and humidifying device comprises a controller (420); a second temperature and humidity sensor (311) is provided at the outlet of the ventilation pipe (300); a first temperature and humidity sensor (312) is provided at the inlet of the ventilation pipe (300); and the controller (420) is electrically connected to the first temperature and humidity sensor (312), the second temperature and humidity sensor (311), and the atomizing and heating module (200), respectively. The control method comprises the following steps: The controller (420) obtains a first detection value of the first temperature and humidity sensor (312), and compares the first detection value with a target value to control the power of the atomizing heating module (200); The controller (420) obtains a second detection value of the second temperature and humidity sensor (311), and compares the second detection value with a target value to adjust the power of the atomizing heating module (200).

10. A ventilator, characterized in that: It comprises a ventilator body (620), a breathing mask (610) and the atomizing humidifying device according to any one of claims 1 to 8, wherein one end of the ventilation tube (300) is connected to the breathing mask (610), and the other end is connected to the ventilator body (620).

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