Water level automatic monitoring device for medical humidification tank
By introducing an automatic water level monitoring device with a float and a sound-emitting element into the humidification tank, the problem of unstable water level in the humidification tank is solved, and automatic control and reminder functions are realized to ensure humidification effect and equipment safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DEQING PEOPLES HOSPITAL
- Filing Date
- 2025-03-10
- Publication Date
- 2026-07-28
AI Technical Summary
Existing medical humidifiers lack an effective water level monitoring mechanism, which can lead to excessively high or low humidification levels, potentially causing patients to cough, develop respiratory infections, or suffer from dryness damage. Furthermore, the water addition operation relies on manual intervention, making precise control difficult.
Design an automatic water level monitoring device for medical humidifiers. The device uses a tubular body composed of a float and a sound-emitting component. The float blocks the water inlet when the water level is high and emits a sound to prompt the addition of water when the water level is low, thus ensuring a stable water level.
It achieves automatic control of the humidification tank water level, avoiding too much or too little humidification water, reducing patient risk, and extending the service life of the equipment.
Smart Images

Figure CN224557884U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of humidification tanks, and in particular to an automatic water level monitoring device for medical humidification tanks. Background Technology
[0002] As a core component of respiratory therapy equipment, the humidifier's function is to prevent dryness and damage to the respiratory mucosa by humidifying medical gases. The accuracy of the humidifier's water level control directly affects the treatment effect: too low a water level will lead to insufficient humidification, while too high a water level may cause condensate backflow.
[0003] Most humidifiers currently used in clinical practice employ an open-type water-filling structure, where sterile water is added to the humidification chamber via an IV tubing. However, the water filling rate relies on manual adjustment by healthcare professionals, and operational errors can easily lead to excessive humidification. When the liquid level in the humidification chamber is too high, backflow may occur through the gas tubing, causing patients to cough and increasing the risk of respiratory infections. Furthermore, the lack of an effective water level monitoring mechanism within the humidification chamber means it may dry out due to excessively low water levels, causing dryness and damage to the patient's airway mucosa. Utility Model Content
[0004] To address the aforementioned issues, this invention provides an automatic water level monitoring device for medical humidifiers, which can prevent situations where there is too much or too little liquid in the humidifier, ensuring the normal operation of the humidifier.
[0005] Therefore, the technical solution of this utility model is: an automatic water level monitoring device for a medical humidifier, comprising a tubular body, the tubular body being divided into a first main body section and a second main body section, and the inner diameter of the second main body section being larger than that of the first main body section; a float ball is provided inside the second main body section, the float ball being used to seal the first main body section; the bottom of the second main body section is sealed, and the circumferential surface is a hollow structure; a sound-generating component is connected to the bottom of the second main body section.
[0006] Based on the above scheme and as a preferred embodiment of the above scheme: the first main body segment is connected to the second main body segment through a conical segment, and the float can fit against the inner wall of the conical segment.
[0007] Based on the above scheme and as a preferred embodiment of the above scheme: the sound-generating component includes a closed aluminum alloy shell, and a metal ball that can generate sound by collision is provided inside the aluminum alloy shell.
[0008] Based on the above scheme and as a preferred embodiment of the above scheme: the bottom of the second main body section is connected to the sound-generating component by a spring.
[0009] Based on the above scheme and as a preferred embodiment of the above scheme: the tubular main body is placed inside the humidification tank, and the top of the first main body section is provided with a connection port, which is connected to the water inlet of the humidification tank.
[0010] In use, place the tubular main body into the humidification tank and connect it to the inlet of the humidification tank. Initially, the water level in the humidification tank is low, the float is at the lowest point, and the bottom of the first main body section is not blocked. When adding water, sterilized water is injected into the inlet of the humidification tank through the rubber strip. The sterilized water flows from the first main body section into the second main body section, and then flows into the humidification tank from the perforated structure on the side of the second main body section. When the water level in the humidification tank rises, the float will also rise. When the float rises and blocks the bottom of the first main body section, the humidification tank stops adding water, thus preventing the water level in the humidification tank from becoming too high.
[0011] When the water level in the humidification tank is normal, the sound-emitting component is submerged in water and will not make a sound. When the water level in the humidification tank drops to the point where the sound-emitting component is exposed, the sound-emitting component will make a sound as the internal airflow and spring shake, thus alerting medical staff that the humidification tank needs to be refilled with water to avoid dry burning.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: a tubular main body is set at the water inlet of the humidification tank, and a float ball is set inside. The float ball can rise and fall with the water level of the humidification tank. When the water level is high, it blocks the first main body section to stop water intake and prevent the water level in the humidification tank from being too high. A sound-emitting element is set at the bottom of the tubular main body, which can sound an alarm when the water level is low to prevent the humidification tank from burning dry and extend the service life of the humidification tank. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 This is a cross-sectional view of the structure of this utility model;
[0015] Figure 3 This is a schematic diagram illustrating the use of this utility model;
[0016] Figure 4 This is a schematic diagram of the high-water-level application of this utility model;
[0017] Figure 5 This is a schematic diagram illustrating the low-water-level application of this utility model.
[0018] The components in the diagram are labeled as follows: tubular body 1, first main body section 11, second main body section 12, conical section 13, hollow structure 14, connection port 15, float 2, spring 3, sound-generating component 4, aluminum alloy shell 41, metal ball 42, humidification tank 5, water inlet 51, air outlet 52, and air inlet 53. Detailed Implementation
[0019] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.
[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.
[0021] See the attached figures. The automatic water level monitoring device for a medical humidifier described in this embodiment includes a tubular main body 1, which is divided into a first main body section 11 and a second main body section 12, with the inner diameter of the second main body section 12 being larger than that of the first main body section 11. The first main body section 11 is connected to the second main body section 12 via a conical section 13. A float ball 2 is provided inside the second main body section 12, which can fit against the inner wall of the conical section 13. The float ball 2 can float up and block the first main body section 11. The bottom of the second main body section 12 is sealed, and the circumferential surface is a hollow structure 14. A sound-generating element 4 is connected to the bottom of the second main body section 12 via a spring 3. The sound-generating element 4 includes a closed aluminum alloy shell 41, inside which is a metal ball 42 that can generate sound upon impact. When the aluminum alloy shell 41 shakes, the internal metal ball 42 impacts the aluminum alloy shell 41, which can generate an audible alarm.
[0022] The humidification tank 5 is provided with a water inlet 51, an air outlet 52 and an air inlet 53. The tubular main body 1 is placed inside the humidification tank 5. The top of the first main body section 11 is provided with a connection port 15, which is connected to the water inlet 51 of the humidification tank 5.
[0023] In the initial stage, the water level in the humidification tank 5 is low, the float ball 2 is at a low position, and the bottom of the first main body section 11 is not blocked. When adding water, sterilized water is injected into the inlet 51 of the humidification tank 5 through the rubber strip. The sterilized water flows from the first main body section 11 into the second main body section 12, and then flows into the humidification tank 5 from the hollow structure 14 on the side of the second main body section 12. When the water level in the humidification tank 5 rises, the float ball 2 will also rise. When the float ball 2 rises and blocks the bottom of the first main body section 11, the humidification tank 5 stops adding water, thereby avoiding the water level in the humidification tank 5 from being too high.
[0024] When the water level in the humidification tank 5 is normal, the sound-emitting component 4 is submerged in water and will not make a sound. When the water level in the humidification tank 5 drops to the point where the sound-emitting component 4 is exposed, the sound-emitting component 4 will shake with the internal airflow and the spring 3 (when the sound-emitting component loses buoyancy, gravity will exert force on the spring, causing the spring to deform) and make a sound, thereby alerting medical staff that the humidification tank 5 needs to be filled with water to avoid dry burning.
[0025] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. An automatic water level monitoring device for a medical humidification tank, characterized in that: It includes a tubular main body, which is divided into a first main body section and a second main body section, with the inner diameter of the second main body section being larger than that of the first main body section; a float is provided inside the second main body section, which is used to seal the first main body section; the bottom of the second main body section is sealed, and the circumferential surface is a hollow structure; a sound-generating component is connected to the bottom of the second main body section.
2. The automatic water level monitoring device for a medical humidification tank as described in claim 1, characterized in that: The first main body section is connected to the second main body section through a conical section, and the float can fit against the inner wall of the conical section.
3. The automatic water level monitoring device for a medical humidification tank as described in claim 1, characterized in that: The sound-generating component includes a closed aluminum alloy shell, inside which is a metal ball that can generate sound by impact.
4. The automatic water level monitoring device for a medical humidification tank as described in claim 1, characterized in that: The bottom of the second main body section is connected to the sound-generating component via a spring.
5. The automatic water level monitoring device for a medical humidification tank as described in claim 1, characterized in that: The tubular main body is placed inside the humidification tank, and the top of the first main body section is provided with a connection port, which is connected to the water inlet of the humidification tank.