Dryout-proof device for humidifying tank of breathing machine

Abstract

The invention relates to an anti-dryout device for a humidifying tank of a breathing machine, which belongs to the technical field of medical auxiliary instruments and comprises a humidifying tank, a detection component, a water replenishing pipe, a water replenishing box and an alarm unit. The water replenishing box is arranged on the outer side of the humidifying tank; the detection assembly is arranged in the water supplementing box and extends out of the water supplementing box from the interior of the water supplementing box, the heating liquid enables the detection assembly to abut against the top face of the water supplementing box, and the abutted detection assembly is connected with the alarm unit in a limiting mode; the water supplementing pipe comprises a heating end, the heating end is located in the humidifying tank, and the liquid level where an opening of the heating end is located is a warning liquid level; when the real-time liquid level in the humidifying tank is lower than the warning liquid level, the water replenishing box replenishes water to the humidifying tank through the water replenishing pipe, and meanwhile, the detection assembly detects that the liquid level of the water replenishing box is lowered to drive the alarm unit to give an alarm. And the conditions that the inside of the humidifying tank is still continuously heated, and the conveyed oxygen is dry and high-temperature to burn a patient are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of medical auxiliary equipment, and in particular relates to a device for preventing a humidifier tank from drying out while in a respirator. Background Art

[0002] The humidifier for ventilator is an important part of the ventilator. Its function is to heat and humidify the inhaled gas. Good heating and humidification can prevent and reduce the respiratory tract of mechanically ventilated patients and the stimulation of the cardiopulmonary system, and keep the alveoli moist. At the same time, it can also reduce the consumption of heat and respiratory water, making it difficult for sputum crusts to form in the airway, and can reduce the viscosity of secretions and promote expectoration.

[0003] The ventilator humidifier tank needs to be filled with sterile water in time for warming and humidification. However, due to the busy work of medical staff, they often neglect to add water to the humidifier tank, causing the humidifier tank to be burned dry, resulting in the patient's respiratory airway not being humidified in time and becoming dry, sputum plug formation and even airway burns.

[0004] Publication number CN220877482U discloses a humidification tank with a reminder function, including a tank body, a transparent inner cylinder is inserted on the upper surface of the tank body, the bottom end of the transparent inner cylinder extends to the bottom of the tank body cavity and is in gap with the inner wall of the bottom of the tank body, the limit ring is fixedly arranged at the bottom of the inner cavity of the transparent inner cylinder, the upper end sliding sleeve of the outer wall of the T-shaped guide rod is provided with a limit block, the sliding sleeve of the outer wall of the T-shaped guide rod is located between the limit block and the limit ring and is provided with a floating plate, and the limit block and the limit ring are provided with a waterproof touch closing button and a waterproof touch opening button on the opposite side. In this technical solution, when the water volume in the tank is lower than the preset value, the floating plate touches the waterproof touch opening button to open the solenoid valve and the alarm, reminding the medical staff and automatically replenishing water at the same time, so as to avoid the problem that the oxygen cannot be humidified, endangering the life and health of the patient, and the continuous operation of the ventilator causes dry burning in the humidification tank, causing equipment damage.

[0005] The above scheme proposes a situation where the water level is reduced through an alarm. Since the dryness and temperature of the oxygen delivered by the humidifier tank are crucial to the patient's respiratory tract, if the device can only remind the humidifier tank to replenish water but cannot protect the humidifier tank from dry burning, there will still be a situation where water cannot be replenished in time. In this way, the humidifier tank will deliver high-temperature, dry oxygen to the patient, damaging the patient's respiratory tract.

[0006] Therefore, there is an urgent need for a ventilator humidifier tank anti-burning device that can alarm and effectively protect against dry burning after dry burning occurs. Summary of the invention

[0007] In order to solve the above problems existing in the prior art, the present invention provides a device to prevent the humidifier tank of a ventilator from drying out, which solves the problem that the existing device can only remind the humidifier tank to replenish water but cannot protect the humidifier tank from drying out. In this way, the humidifier tank will deliver high-temperature, dry oxygen to the patient, damaging the patient's respiratory tract.

[0008] The purpose of the present invention can be achieved through the following technical solutions:

[0009] A device for preventing a humidifier tank from drying out during breathing, comprising a humidifier tank, a detection component, a water supply pipe, a water supply box and an alarm unit; the water supply box is arranged on the outside of the humidifier tank; the water supply pipe is used to connect the water supply box and the humidifier tank, the water supply box is completely filled with a heated liquid, the detection component is arranged on the water supply box and extends from the inside of the water supply box to the outside of the water supply box, the heated liquid abuts the detection component against the top surface of the water supply box, and the abutted detection component is limitedly connected to the alarm unit;

[0010] The water replenishment tube includes a heating end, the heating end is located in the humidification tank, and the liquid level at the opening of the heating end is the warning liquid level; when the real-time liquid level in the humidification tank is lower than the warning liquid level, the water replenishment box replenishes water to the humidification tank through the water replenishment tube, and at the same time, the detection component detects that the liquid level of the water replenishment box is reduced and drives the alarm unit to sound an alarm.

[0011] Preferably, the detection assembly includes a float, a detection rod and a seal; the seal is arranged on the top of the water replenishment box, the float is located in the water replenishment box, the float is fixedly connected to the detection rod, the detection rod is coaxially connected to the seal, and is slidably connected to the seal; the detection rod is connected to the alarm unit.

[0012] Preferably, the water replenishment pipe also includes a water replenishment end, the water replenishment end is fixedly connected to the heating end, the water replenishment end is located in the water replenishment box, the bottom of the water replenishment end is a conical mouth, and the conical mouth is in contact with the bottom of the water replenishment box.

[0013] Preferably, it also includes a heating component and an adjusting component, wherein the heating component is arranged at the bottom of the humidification tank and is used to heat the humidification tank, and the adjusting component is connected to the heating component and is used to change the heating power of the heating component according to the descending height of the detection component.

[0014] Preferably, the adjustment component includes a resistor, a sliding block and a fixed seat; the fixed seat is fixedly installed on the ventilator, and the fixed seat is also provided with a support rod, and the resistor is arranged on the fixed seat and is parallel to the support rod; the sliding block is slidably installed on the support rod, and the sliding block is provided with a connecting joint, and the connecting joint is slidably connected to the resistor; the sliding block is connected to the detection rod, and the detection rod drives the sliding block to slide.

[0015] Preferably, the heating assembly includes a heating plate, the resistor is electrically connected to the heating plate, and the connection joint and the connection area at one end of the resistor constitute a load end connected to the heating plate.

[0016] Preferably, it also includes a friction component, which is rotatably arranged on the sealing member to reduce the tension on the floating block; the friction component includes a plurality of balls arranged in an array, the detection rod is provided with a slide groove corresponding to the balls, the balls are slidably connected to the slide groove, and any of the balls rotates along the direction of movement of the detection rod.

[0017] Preferably, the resistor is located on the top of the floating block.

[0018] Preferably, an air inlet pipe and an air outlet pipe are provided on the top of the humidification tank; the air inlet pipe is connected to the ventilator, and the air outlet pipe is used to deliver the humidified oxygen to the patient.

[0019] The beneficial effects of the present invention are:

[0020] 1. When the liquid in the humidifier tank of the present application is reduced to below the warning liquid level, the water replenishment box is triggered to replenish water. The detection component will simultaneously drive the alarm unit to sound an alarm. This double protection measure helps to promptly remind the operator to pay attention to the status of the humidifier tank, ensure the normal operation of the equipment and the safety of the patient. At the same time as the alarm, water can be replenished in the humidifier tank. When the humidifier tank is lower than the warning liquid level, an alarm is sounded to avoid continued heating in the humidifier tank. The heated liquid in the humidifier tank is burned dry before water is added, and the delivered oxygen is dry and high-temperature, causing burns to the patient.

[0021] 2. When there is sufficient liquid in the humidifier tank, the heating power can be maintained at a high level to quickly generate water vapor; when the liquid level drops, the heating power is reduced accordingly to avoid unnecessary energy waste. Through the linkage of the adjustment device and the detection device, the heating component can adjust the heating power according to the amount of water in the humidifier tank, which can prevent the humidifier tank from drying out in a short time and ensure the temperature and humidity requirements for oxygen delivery to patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0023] Figure 1 It is a schematic cross-sectional structural diagram of a burn-dry prevention device provided in one embodiment of the present invention;

[0024] Figure 2 A schematic diagram of a water replenishment structure of a burn-dry prevention device provided in one embodiment of the present invention;

[0025] Figure 3 It is a schematic diagram of the top view of the structure of the burn-dry prevention device provided in one embodiment of the present invention;

[0026] Figure 4 A schematic diagram of a connection structure of a friction assembly provided in one embodiment of the present invention;

[0027] Legend: 1. Humidifier tank; 11. Air inlet pipe; 12. Air outlet pipe; 2. Detection assembly; 21. Float; 22. Detection rod; 23. Seal; 3. Water supply pipe; 31. Heating end; 32. Water supply end; 321. Conical mouth; 4. Water supply box; 5. Alarm unit; 6. Heating assembly; 7. Adjustment assembly; 71. Resistor; 72. Sliding block; 721. Connecting joint; 73. Fixed seat; 731. Support rod; 8. Friction assembly. DETAILED DESCRIPTION

[0028] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0029] like Figure 1-Figure 4 As shown, a ventilator humidifier tank dry-out prevention device comprises a humidifier tank 1, a detection component 2, a water replenishment pipe 3, a water replenishment box 4 and an alarm unit 5; the water replenishment box 4 is arranged on the outside of the humidifier tank 1; the water replenishment pipe 3 is used to connect the water replenishment box 4 and the humidifier tank 1, the water replenishment box 4 is completely filled with heated liquid, the detection component 2 is arranged in the water replenishment box 4, and extends from the inside of the water replenishment box 4 to the outside of the water replenishment box 4, the heated liquid abuts the detection component 2 on the top surface of the water replenishment box 4, and the abutted detection component 2 is limitedly connected with the alarm unit 5;

[0030] The water replenishment tube 3 includes a heating end 31 and a water replenishment end 32. The heating end 31 is located in the humidification tank 1, and the liquid level at the opening of the heating end 31 is the warning liquid level. The water replenishment end 32 is fixedly connected to the heating end 31. The water replenishment end 32 is located in the water replenishment box 4. The bottom of the water replenishment end 32 is a conical mouth 321, and the conical mouth 321 contacts the bottom of the water replenishment box 4. When the real-time liquid level in the humidification tank 1 is lower than the warning liquid level, the water replenishment box 4 replenishes water to the humidification tank 1 through the water replenishment tube 3. At the same time, the detection component 2 detects that the liquid level of the water replenishment box 4 is reduced and drives the alarm unit 5 to sound an alarm. The detection component 2 is arranged inside the water replenishment box 4 and is subjected to the pressure of the heated liquid to make it tight. It is tightly abutted against the top surface of the water replenishment box 4, so that the detection component 2 can sense the change of the liquid level in the water replenishment box 4. When the liquid in the humidification tank 1 is reduced to below the warning liquid level due to evaporation or use, the liquid in the water replenishment tube 3 will also be reduced accordingly, thereby driving the liquid level in the water replenishment box 4 to drop. The detection component 2 moves as the liquid level in the water replenishment box 4 decreases. Once the liquid level in the water replenishment box 4 drops, it means that the humidification tank 1 is already below the warning liquid level. Therefore, the detection component 2 will trigger the connection with the alarm unit 5 as the liquid level in the water replenishment box 4 decreases, driving the alarm unit 5 to sound an alarm, and promptly reminding the patient to replenish water when the humidification tank 1 needs replenishment, so as to avoid affecting the patient.

[0031] The water replenishment tube 3 connects the water replenishment box 4 with the humidification tank 1 , wherein the heating end 31 is located in the humidification tank 1 , and the water replenishment end 32 is located in the water replenishment box 4 .

[0032] When the real-time liquid level in the humidification tank 1 is lower than the warning liquid level, the water replenishment process starts automatically. Since the bottom of the water replenishment end 32 is a conical mouth 321 and contacts with the bottom of the water replenishment box 4, it ensures that when the humidification tank 1 is in the alarm state, the water in the water replenishment box 4 can completely enter the humidification tank 1, thereby ensuring smooth water replenishment. Specifically, the water replenishment tube 3 is a U-shaped tube, and the height of the heating end 31 is higher than the height of the water replenishment end 32. Since the heating end 31 is located at a higher position and the water replenishment end 32 is located at a lower position, when the liquid in the humidification tank 1 decreases and the liquid level in the water replenishment tube 3 drops, a certain liquid level difference will be formed between the liquid in the water replenishment box 4 and the humidification tank 1 (or the remaining liquid in the water replenishment tube 3). This liquid level difference will generate a natural pressure difference, pushing the liquid in the water replenishment box 4 to flow upward along the water replenishment pipe 3 until it is replenished in the humidification tank 1; the U-tube design and the unpowered water replenishment method can simplify the structure of the entire system. Compared with the system that requires an external pump or pressure source, this design reduces the number and complexity of components, reduces the failure rate and maintenance cost; the alarm issued by the alarm unit 5 can be sound, light or other forms of signal, so as to effectively remind relevant personnel in different environments

[0033] In short, when the liquid in the humidifier tank 1 of the present application decreases below the warning liquid level, the water replenishing box 4 is triggered to replenish water, and the detection component 2 will simultaneously drive the alarm unit 5 to sound an alarm. This double protection measure helps to promptly remind the operator to pay attention to the status of the humidifier tank 1 to ensure the normal operation of the equipment and the safety of the patient. At the same time as the alarm, water can also be replenished in the humidifier tank 1. When the humidifier tank 1 is lower than the warning liquid level, an alarm is issued, but the humidifier tank 1 continues to be heated to prevent the heated liquid in the humidifier tank 1 from being burned out before water is added. The delivered oxygen is both dry and high-temperature, which will cause burns to the patient.

[0034] In one embodiment, the detection assembly 2 includes a float 21, a detection rod 22 and a seal 23; the seal 23 is arranged at the top of the water replenishment box 4, the float 21 is located in the water replenishment box 4, the float 21 is fixedly connected to the detection rod 22, the detection rod 22 is coaxially connected to the seal 23, and is slidably connected to the seal 23; the detection rod 22 is connected to the alarm unit 5; initial state: when the liquid in the water replenishment box 4 is sufficient, the float 21 floats at a certain height above the liquid surface, the float 21 is connected to the detection rod 22 by a fixed connection, the detection rod 22 is coaxially connected to the seal 23 arranged at the top of the water replenishment box 4, and can slide in the seal 23; at this time, the detection rod 22 is in a high position and will not trigger the alarm unit 5; liquid level drops: as the ventilator humidifier tank 1 consumes liquid, the liquid level in the water replenishment box 4 gradually drops, and the float 21 sinks accordingly, driving the detection rod 22 to move downward; since the detection rod 22 is slidably connected to the seal 23, it can move smoothly along the axial direction;

[0035] Triggering alarm: When the liquid level in the water replenishment box 4 begins to drop, the detection rod 22 is driven to move further downward. At this time, the contact on the detection rod 22 is disconnected from the alarm unit 5, triggering an alarm signal. The alarm unit 5 immediately emits sound, light and other alarms to remind the operator to pay attention to the liquid level in the water replenishment box 4; in short, the detection component 2 rises and falls with the change of the liquid level in the water replenishment box 4 through the float 21, and can sense the liquid level in the water replenishment box 4 in real time; once the water replenishment box 4 is replenished, the liquid level begins to drop and the alarm is immediately triggered to ensure that the problem of liquid depletion is discovered and dealt with in time; the float 21 is in direct contact with the liquid in the water replenishment box 4, so it can accurately reflect the height of the liquid level, and the detection rod 22 is driven to move by the rise and fall of the float 21, thereby triggering the alarm unit 5. This mechanical detection method has high accuracy and reliability.

[0036] In one embodiment, it also includes a heating component 6 and an adjusting component 7. The heating component 6 is arranged at the bottom of the humidification tank 1 and is used to heat the humidification tank 1. The adjusting component 7 is connected to the heating component 6 and is used to change the heating power of the heating component 6 according to the descending height of the detection component 2; the heating component 6 is arranged at the bottom of the humidification tank 1, and its main function is to heat the liquid in the humidification tank 1 to evaporate it and generate water vapor, thereby increasing the humidity of the output gas of the ventilator; the heating component 6 usually includes heating elements such as heating wires and heating plates, which generate heat by heating with electric current; through the adjustment energy of the adjusting component 7, the heating power can be adjusted according to the actual consumption of the liquid in the humidification tank 1 to ensure that the temperature in the humidification tank 1 is always maintained within an appropriate range, which helps to avoid excessive temperature causing the liquid to evaporate too quickly But there is a problem of wasting resources, or the temperature is too low to effectively generate water vapor; the detection component 2 can monitor the changes in the liquid level in the humidification tank 1 in real time; once the liquid level is lower than the warning level, the detection component 2 will immediately transmit this information to the adjustment component 7. By intelligently adjusting the heating power, the system can save energy to the maximum extent while ensuring the humidification effect; when the liquid in the humidification tank 1 is sufficient, the heating power can be maintained at a high level to quickly generate water vapor; and when the liquid level drops, the heating power is reduced accordingly to avoid unnecessary energy waste. Through the linkage between the adjustment component 7 and the detection component 2, the heating component 6 can adjust the heating power according to the amount of water in the humidification tank 1, which can prevent the humidification tank 1 from dry burning in a short time and ensure the temperature and humidity requirements of the patient's delivery gas.

[0037] In one embodiment, the adjustment component 7 includes a resistor 71, a sliding block 72 and a fixed seat 73; the fixed seat 73 is fixedly installed on the ventilator, and the fixed seat 73 is also provided with a support rod 731, and the resistor 71 is arranged on the fixed seat 73 and is parallel to the support rod 731; the sliding block 72 is slidably installed on the support rod 731, and the sliding block 72 is provided with a connecting joint 721, and the connecting joint 721 is slidably connected to the resistor 71; the sliding block 72 is connected to the detection rod 22, and the detection rod 22 drives the sliding block 72 to slide; the resistor 71 is used as the core component for adjusting the heating power, and the resistor 71 is used as the core component for adjusting the heating power. The resistance value of 1 changes with the sliding position of the sliding block 72 thereon, thereby changing the current or voltage in the circuit, thereby realizing the adjustment of the heating power of the heating component 6. The sliding block 72 is slidably mounted on the support rod 731 and can slide freely along the support rod 731; a connecting joint 721 is provided on the sliding block 72, and the connecting joint 721 is slidably connected to the resistor 71, that is, as the sliding block 72 moves, the connecting joint 721 will slide on the resistor 71, thereby changing the effective resistance value of the resistor 71, and the detection rod 22 is connected to the sliding block 72. When the humidification When the liquid level in the tank 1 drops, the detection rod 22 will drop accordingly, driving the sliding block 72 to slide on the support rod 731. This linkage mechanism ensures that the change of the liquid level in the humidification tank 1 can be directly reflected in the adjustment of the heating power. As the sliding block 72 slides on the resistor 71, the effective resistance of the resistor 71 changes, thereby changing the heating power of the heating component 6. When the liquid level in the humidification tank 1 is high, the sliding block 72 is at one end of the resistor 71, the resistance of the resistor 71 is small, and the heating power is large; when the liquid level drops, the sliding block 72 slides to the other end of the resistor 71. end, the resistance of the resistor 71 increases, and the heating power decreases accordingly; in short, through the linkage mechanism of the detection rod 22 and the sliding block 72, the system can intelligently adapt to the changes in the liquid level in the humidification tank 1 and automatically adjust the heating power; avoid the dry burning phenomenon caused by the low liquid level, improve the safety and reliability of the system, when the liquid level is high, the heating power is large, and the temperature and humidity in the humidification tank 1 can be quickly increased; when the liquid level drops, the heating power is automatically reduced, avoiding unnecessary energy waste. This energy-saving and efficient heating method helps to reduce the operating cost of the equipment.

[0038] In one embodiment, the heating assembly 6 includes a heating plate, the resistor 71 is electrically connected to the heating plate, and the connection joint 721 and the connection area of ​​one end of the resistor 71 constitute a load end connected to the heating plate; the heating plate converts electrical energy into thermal energy by using the heating effect of the resistor 71, which is used to heat the liquid in the humidification tank 1. The load segment composed of the connection joint 721 and the connection area of ​​one end of the resistor 71 plays a key role in adjusting the heating power in the circuit. By adjusting the resistance value of the resistor 71 or changing the part of the resistor 71 connected to the circuit, the heating power of the heating plate can be accurately controlled, thereby realizing accurate control of the temperature in the humidification tank 1; the stable operation of the heating assembly 6 ensures that the humidification tank 1 can continuously provide gas with suitable temperature and humidity, providing a more comfortable and safe breathing environment for patients.

[0039] In one embodiment, a friction assembly 8 is further included, which is rotatably arranged on the sealing member 23 to reduce the tension on the floating block 21; the friction assembly 8 includes a plurality of balls arranged in an array, the detection rod 22 is provided with a slide groove corresponding to the balls, the balls are slidably connected to the slide groove, and any ball rotates along the direction of movement of the detection rod 22; as the detection rod 22 moves, any ball will automatically rotate along the direction of its movement to adapt to the shape and angle changes of the slide groove, and this adaptive adjustment ability ensures continuous contact and smooth sliding between the ball and the slide groove; the friction assembly is composed of a plurality of balls arranged in an array, which are mounted on the sealing member 23 and can rotate freely. A slide groove corresponding to the balls is provided on the detection rod 22, and the shape and size of the slide groove are designed so that the balls can slide smoothly therein. When the detection rod 22 moves with the floating block 21, the balls will roll along the slide groove to reduce the friction on the detection rod 22. Since there is rolling friction rather than sliding friction between the balls and the slide groove, this design significantly reduces the tension transmitted by the floating block 21 through the detection rod 22 during movement. The resistance of rolling friction is much smaller than that of sliding friction, so it can reduce energy loss and make the system respond more quickly and sensitively.

[0040] In one embodiment, the resistor 71 is located at the top of the float 21, so that when the float 21 descends, the resistor 71 can add the maximum effective load, that is, when the float 21 moves from the top to the bottom of the water replenishment box 4, the detection rod 22 drives the sliding block 72 to move from the top of the resistor 71 to the bottom of the resistor 71, and there will be no interference, and it can adapt to the changes of the float 21.

[0041] In one embodiment, an air inlet pipe 11 and an air outlet pipe 12 are provided on the top of the humidification tank 1; the air inlet pipe 11 is connected to the ventilator, and the air outlet pipe 12 is used to deliver the humidified oxygen to the patient; in the respiratory therapy system, the humidification tank 1 plays a vital role, and it is responsible for humidifying the dry gas (such as oxygen) and adjusting it to a suitable temperature to ensure that the patient feels comfortable during breathing and avoids dryness of the respiratory tract; the air inlet pipe 11 is connected to the ventilator to provide a continuous air source for the humidification tank 1; the air outlet pipe 12 delivers the humidified and heated gas to the patient to form a complete gas flow path; setting the air inlet pipe 11 on the top of the humidification tank 1 helps to better diffuse and mix the gas in the tank, thereby improving the humidification efficiency; at the same time, the top air outlet design is also conducive to the uniform and stable outflow of the humidified gas, reducing water vapor condensation and the risk of dripping; in addition, the water replenishment box 4 should also be provided with a water replenishment port for replenishing water and a water pouring port for pouring water (not marked in the figure). The water replenishment port is arranged on the top of the water replenishment box 4 for replenishing water into the water replenishment box 4 and the humidification tank 1. Specifically, water flows from the water replenishment box 4 to the humidification tank 1 under the action of the water replenishment pipe 3 to complete the water replenishment of the humidification tank 1. The water pouring port is arranged on the lower side of the humidification tank 1. Since the liquid in the humidification tank 1 does not meet the use requirements after 24 hours, it is required to pour out the water that has not been used up for 24 hours. Therefore, it is necessary to set a water pouring port to pour out the water in the humidification tank 1 and the water replenishment box 4. The water replenishment port and the water pouring port should be sealed with a sealing cover when not in use. The water replenishment and pouring of the humidification tank 1 are not limited to the above-mentioned scheme, and it is mainly capable of realizing the water replenishment and pouring of the humidification tank 1 without affecting the normal operation of the humidification tank 1.

[0042] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A device for preventing a humidifier tank from drying out, characterized in that: It comprises a humidification tank, a detection component, a water replenishment pipe, a water replenishment box and an alarm unit; the water replenishment box is arranged on the outside of the humidification tank; the water replenishment pipe is used to connect the water replenishment box and the humidification tank, the water replenishment box is completely filled with heated liquid, the detection component is arranged on the water replenishment box, and extends from the inside of the water replenishment box to the outside of the water replenishment box, the heated liquid abuts the detection component against the top surface of the water replenishment box, and the abutted detection component is limitedly connected with the alarm unit; The water replenishment tube includes a heating end, the heating end is located in the humidification tank, and the liquid level at the opening of the heating end is the warning liquid level; when the real-time liquid level in the humidification tank is lower than the warning liquid level, the water replenishment box replenishes water to the humidification tank through the water replenishment tube, and at the same time, the detection component detects that the liquid level of the water replenishment box is reduced and drives the alarm unit to sound an alarm.

2. A device for preventing a humidifier tank from drying out according to claim 1, characterized in that: The detection assembly includes a float, a detection rod and a seal; the seal is arranged on the top of the water replenishment box, the float is located in the water replenishment box, the float is fixedly connected to the detection rod, the detection rod is coaxially connected to the seal, and is slidably connected to the seal; the detection rod is connected to the alarm unit.

3. A device for preventing a humidifier tank from drying out according to claim 1, characterized in that: The water replenishment pipe also includes a water replenishment end, which is fixedly connected to the heating end and is located in the water replenishment box. The bottom of the water replenishment end is a conical mouth, and the conical mouth contacts the bottom of the water replenishment box.

4. A device for preventing a humidifier tank from drying out according to claim 2, characterized in that: It also includes a heating component and an adjusting component. The heating component is arranged at the bottom of the humidification tank and is used to heat the humidification tank. The adjusting component is connected to the heating component and is used to change the heating power of the heating component according to the descending height of the detection component.

5. A device for preventing a humidifier tank from drying out according to claim 4, characterized in that: The adjustment component includes a resistor, a sliding block and a fixed seat; the fixed seat is fixedly installed on the ventilator, and the fixed seat is also provided with a support rod. The resistor is arranged on the fixed seat and is parallel to the support rod; the sliding block is slidably installed on the support rod, and the sliding block is provided with a connecting joint, and the connecting joint is slidably connected to the resistor; the sliding block is connected to the detection rod, and the detection rod drives the sliding block to slide.

6. A device for preventing a humidifier tank from drying out for a respirator according to claim 5, characterized in that: The heating assembly comprises a heating plate, the resistor is electrically connected to the heating plate, and the connection joint and a connection area at one end of the resistor form a load section connected to the heating plate.

7. A device for preventing a humidifier tank from drying out according to claim 5, characterized in that: It also includes a friction component, which is rotatably arranged on the sealing component and is used to reduce the tension on the floating block; the friction component includes a plurality of balls arranged in an array, the detection rod is provided with a slide groove corresponding to the balls, the balls are slidably connected to the slide groove, and any of the balls rotates along the direction of movement of the detection rod.

8. A device for preventing a humidifier tank from drying out according to claim 5, characterized in that: The resistor is located on top of the float.

9. A device for preventing a humidifier tank from drying out for a respirator according to claim 1, characterized in that: An air inlet pipe and an air outlet pipe are arranged on the top of the humidification tank; the air inlet pipe is connected to the ventilator, and the air outlet pipe is used to deliver the humidified oxygen to the patient.

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