CN219836005U - Humidification device with water level detection and breathing machine - Google Patents

Abstract

The utility model provides a humidifying device with water level detection and a breathing machine, wherein the device comprises a humidifying component and a pressure difference component inserted into the humidifying component; the humidifying assembly comprises a humidifying tank and a control host connected with the bottom of the humidifying tank; the humidifying tank comprises a top cover and a cylindrical tank body, and the top cover is provided with an air inlet and an air outlet in a penetrating way; the top cover is also provided with a water inlet and a mounting hole for inserting the differential pressure component in a penetrating way; the pressure difference assembly comprises a containing cavity and a partition plate, wherein the partition plate completely separates the containing cavity into two containing cavity units, and each containing cavity unit is also communicated with a pressure acquisition port of a corresponding pressure difference sensor; each containing cavity unit is also provided with a corresponding first pressure collecting pipe and a corresponding second pressure collecting pipe, the first pressure collecting pipe is inserted below the liquid level in the tank body, the second pressure collecting pipe is inserted above the liquid level in the tank body, and the differential pressure sensor is also connected with the control host. Aims to improve the effectiveness of dry-burning early warning of the humidifying device.

Description

Humidification device with water level detection and breathing machine

Technical Field

The utility model relates to the technical field of respirators, in particular to a humidifying device with water level detection and a respirators.

Background

At present, a humidifying water box for a breathing machine is an important component of the breathing machine, and has the functions of heating and humidifying inhaled gas. The good warming and humidifying effects can prevent and reduce respiratory tract secondary infection of mechanically ventilated patients, and stimulate the heart and lung system to keep alveoli moist. Meanwhile, the consumption of heat and respiratory tract moisture can be reduced, so that sputum scab is not easy to generate in the airway, the viscosity of secretion can be reduced, and sputum excretion is promoted. However, the existing humidifying water box assembly of the breathing machine is not provided with a corresponding water level detection structure, as shown in fig. 1, a certain existing household humidifying device is shown, after the humidifying tank 11 is combined with the bottom heating plate 12, purified water can be contained, and the main machine 13 of the bottom humidifying device heats the purified water in the humidifying tank 11 through the bottom heating plate 12. The gas of the breathing machine enters the humidifying tank 11 from the gas inlet 111 on the humidifying tank 11, is mixed with the vapor which transpires above the hot water, so that the gas is fully humidified, and the humidified gas is discharged through the gas outlet 112 on the humidifying tank 11, is connected with a breathing pipeline and finally enters the human respiratory system. After the water is consumed, medical staff accesses a water delivery pipeline at the joint of the upper 113 of the humidification tank 11, then supplements water for the humidification tank 11 in an intravenous injection mode, and after the water supplement is completed, the water supplement device is manually closed. Although the early warning can be achieved by detecting the temperature of the heating floor 12, that is, when the temperature of the heating floor 12 exceeds the threshold, the host central processing unit considers that the water inside the humidification tank 11 is consumed at this time, so that the temperature of the heating plate is continuously raised, and thus the dry combustion early warning is started. However, the early warning mode has certain misjudgment, the influence on the temperature of the heating plate is larger under the conditions of room temperature and scale formation of the heating plate, and the heating modes such as PTC and the like commonly used have larger influence on the temperature, so that the situation of false early warning or missing early warning is caused. And further, a humidifying device for effectively realizing dry combustion early warning is urgently needed to be provided.

Disclosure of Invention

The utility model mainly aims to provide a humidifying device and a breathing machine, and aims to solve the problem that the existing humidifying water device is inaccurate in dry-burning early warning detection.

To achieve the above object, the present utility model provides a humidifying device with water level detection, the device including a humidifying assembly and a pressure difference assembly inserted into the humidifying assembly;

the humidifying assembly comprises a humidifying tank and a control host connected with the bottom of the humidifying tank;

the humidifying tank comprises a top cover and a cylindrical tank body, wherein the top cover is communicated with an air inlet pipe and an air outlet communicated with an air outlet pipe, and the air inlet pipe and the air outlet pipe are respectively communicated with an external breathing machine;

the top cover is also provided with a water inlet and a mounting hole for inserting the differential pressure component in a penetrating way;

the pressure difference assembly comprises a containing cavity and a partition plate, wherein the partition plate completely separates the containing cavity into two containing cavity units, and each containing cavity unit is also communicated with a pressure acquisition port of a corresponding pressure difference sensor;

each accommodating cavity unit is further provided with a corresponding first pressure collecting pipe and a corresponding second pressure collecting pipe, the first pressure collecting pipe is inserted below the liquid level in the tank body, the second pressure collecting pipe is inserted above the liquid level in the tank body, and the pressure difference sensor is further connected with the control host.

Optionally, a heating bottom plate is further arranged at the bottom of the tank body, and the heating bottom plate is started under the control of the control host.

Optionally, the lower pipe orifice of the first pressure collecting pipe is separated from the heating bottom plate by 2-5 mm.

Optionally, the differential pressure assembly is closely attached to the mounting hole by a skirt portion on the underside.

Optionally, an annular sealing ring is further arranged between the skirt portion and the mounting hole.

Optionally, a hose is further connected between each accommodating cavity unit and a corresponding collecting port of the differential pressure sensor, and an accommodating cavity plugging end cover is further arranged between each hose and the corresponding accommodating cavity unit.

Optionally, a flexible film is arranged on one side of each containing cavity unit close to the corresponding containing cavity plugging end cover.

Optionally, the lower pipe orifice of the first pressure collecting pipe is of a wedge-shaped structure.

Optionally, the differential pressure sensor is connected with the control host through a data line.

To achieve the above object, the present utility model also provides a ventilator comprising the humidifying device with water level detection as set forth in any one of the above.

The beneficial effects are that:

1. the corresponding pressure collecting pipes are arranged above and below the liquid level and are connected with different collecting ports of the differential pressure sensor, so that two different pressure spaces are formed, the water level change in the humidifying tank is determined through the change of the pressure difference, the early warning of the water level of the humidifying tank is realized, and the residual water condition in the humidifying tank can be determined.

2. The differential pressure assembly adopts an integrated two-cavity design, realizes pressure transmission by adding a flexible film, and also plays a role in protecting the differential pressure sensor.

3. The tail end of the pressure collecting pipe extending into the lower part of the liquid level adopts a wedge-shaped structure, so that the influence of siphon effect can be effectively avoided.

4. The sealing member is matched with the sealing member, so that the tightness of the humidifying component and the pressure difference component is effectively enhanced, and the detection accuracy is further improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a prior art ventilator humidification device;

FIG. 2 is a schematic diagram of a humidifying device with water level detection according to an embodiment of the present utility model;

FIG. 3 is a sectional view of the structure of FIG. 2;

FIG. 4 is a schematic illustration of the structure of the humidification assembly of FIG. 2;

FIG. 5 is a schematic diagram of the differential pressure assembly of FIG. 2;

FIG. 6 is a graph showing the variation of the internal pressure difference in a test period according to an embodiment of the present utility model.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Reference numerals illustrate:

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear are used in the embodiments of the present utility model) are merely for explaining the relative positional relationship, movement conditions, and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Referring to fig. 2-5, the present utility model provides a schematic structural view of an embodiment of a humidifying device with water level detection, wherein, as shown in fig. 2-3, the device comprises a humidifying assembly 3 and a pressure differential assembly 2 inserted into the humidifying assembly 3;

as shown in fig. 4, the humidifying assembly 3 includes a humidifying tank 31 and a control host 33 connected to the bottom of the humidifying tank 31, wherein a heating bottom plate 32 is disposed at the bottom of the humidifying tank 31, and the heating bottom plate 32 is controlled to be started by the control host 33.

Simultaneously, humidification jar 31 includes top cap and cylindric jar body, the top cap link up be provided with be used for with the air inlet of intake pipe 311 intercommunication and be used for with the gas outlet of outlet duct 312 intercommunication, intake pipe 311, outlet duct 312 communicate with external breathing machine respectively, and then realize the gaseous of the interior circulation of humidification breathing machine.

Further, the top cover is further provided with a water inlet 313 and a mounting hole 314 for inserting the differential pressure assembly 2, the water inlet 313 is used for supplementing water to the tank body, the mounting hole 314 is convenient for inserting the humidification assembly 3 into the tank body when the humidification device is started, generally, the skirt edge 214 at the lower side of the differential pressure assembly 2 is tightly attached to the mounting hole 314, preferably, an annular sealing ring 3141 is further arranged between the skirt edge 214 and the mounting hole 314, and further the sealing effect of the junction of the humidification assembly 3 and the differential pressure assembly 2 is effectively improved. More preferably, the top cover and the cylindrical can body are integrally formed.

Further, as shown in fig. 3 and 5, the differential pressure assembly 2 includes a cavity 21 and a partition plate 212, the partition plate 212 completely partitions the cavity 21 into two cavity units, and each cavity unit is further communicated with a pressure collecting port of a corresponding differential pressure sensor 24; and each holding chamber unit is still provided with corresponding first pressure collection pipe 211, second pressure collection pipe 213, first pressure collection pipe 211 inserts the liquid level below in the jar body, second pressure collection pipe 213 inserts the liquid level above in the jar body, differential pressure sensor 24 still is connected with control host 33, through the intercommunication of first pressure collection pipe 211, second pressure collection pipe 213 one end and jar internal liquid level upper and lower side, the other end communicates with differential pressure sensor 24's corresponding collection mouth, has realized transmitting differential pressure sensor with the pressure in the different collection pipes in the water box, has realized the pressure acquisition. And the differential pressure sensor 24 is further connected with the control host 33, so that pressure data is transmitted to the control host 33 in real time, and further regulation and control of the control host 33 are realized.

Further, as shown in fig. 5, the lower nozzle 2111 of the first pressure collecting pipe 211 has a wedge-shaped structure. The improved principle is that if the lower pipe orifice 2111 of the first pressure collecting pipe 211 is flat, the water column in the first pressure collecting pipe 211 is easily sucked under the action of retention force and siphonage, and the wedge-shaped port can destroy the balance state of the water after dry combustion, and then the water column falls under the action of gravity, so that pressure balance at two ends is realized, and pressure difference mutation is caused. Thereby realizing reminding related personnel of adding water into the humidification tank 31.

Further, the lower nozzle 2111 of the first pressure collecting pipe 211 is spaced from the heating bottom plate 32 by a certain distance, and typically, a preset distance is set to be 2-5 mm, which can be adjusted according to actual needs.

Further, a flexible pipe 23 is further connected between each accommodating cavity unit and the corresponding collecting port of the differential pressure sensor 24, and an accommodating cavity plugging end cover 22 is further arranged between each flexible pipe 23 and the corresponding accommodating cavity unit. Specifically, one end of each hose 23 is connected with a corresponding pressure acquisition port, the other end of each hose 23 is connected with an interface of a corresponding cavity plugging end cover 22, and each cavity unit, the cavity plugging end cover 22 and the hose 23 are integrated together and are arranged in line symmetry.

Further, a flexible film 4 is arranged on one side of each containing cavity unit close to the corresponding containing cavity plugging end cover 22. The arrangement of the flexible film 4 realizes the indirect transfer of the pressure in different collecting pipes in the humidifying tank 31 to the differential pressure sensor, realizes the indirect pressure collection and simultaneously can protect the sensor from water inlet failure.

Further, the differential pressure sensor 24 is connected to a control host 33 through a data line 25. Specifically, the side of the control host 33 is provided with a corresponding signal line interface 331, so as to facilitate the communication of the data line 25. And then according to the pressure values in different collecting pipes received by the differential pressure sensor, the differential pressure condition in the humidifying tank 31 is further determined, and when the differential pressure is 0, the control host machine sends out corresponding early warning reminding.

Further, after the water is consumed, the related personnel access the water delivery pipeline at the water inlet 313 of the humidification tank 31, then supplement water to the humidification tank 31 in an intravenous injection mode, and after the water supplement is completed, the water supplement device is manually closed.

To achieve the above object, the present utility model also provides a ventilator comprising the humidifying device with water level detection as set forth in any one of the above.

Further, in order to better illustrate the effect of the device, the following is implemented by specific collected data:

FIG. 6 is a graph showing a trend of measured differential pressure for the humidification of the present utility model. The abscissa represents time in s, and the ordinate represents the differential pressure acquired by the differential pressure sensor in Pa. Within 0-2029s, the current water level is in a state where the water level is lower than the lower nozzle 2111, so the pressure difference is always zero. Starting from 2029s, the water level in the humidification tank 31 was made to exceed the lower nozzle 2111 of the collection tube 211 by external water replenishment, so the differential pressure started to decrease, and at 2291 s, the water replenishment ended, and the differential pressure reached-300 Pa. As the ventilator continues to operate, the pressure differential continues to drop, eventually reaching a minimum of-372 Pa. This is because the water temperature starts to rise from room temperature, there is water vapor generation, and the closed gas temperature in the collection tube 211 rises, the gas expands, so that the pressure in the collection tube 211 further rises, while the pressure in the humidification tank 31 remains constant with the ventilator flow, so the pressure differential initially drops. With the continuous consumption of water, the supporting force of water on the water column in the collecting pipe 211 decreases, so that the liquid level of the collecting pipe 211 decreases, the volume of the enclosed gas in the collecting pipe 211 increases, the pressure decreases, and the pressure difference increases. At 8241s, the pressure difference rises to a maximum value of 52Pa, and after the water level is lower than the lower nozzle 2111 of the collecting tube 211, the water column in the collecting tube 211 can drop instantly, so that the collecting tube 211 is communicated with the inside of the humidification tank 11. And because the lower pipe orifice 2111 of the collecting pipe 211 adopts a wedge-shaped design, after the water column falls, the pressure of the space units at the left side and the right side of the containing cavity 21 is indirectly transmitted through the flexible film 4, and the pressure collected at the two ends of the differential pressure sensor 24 is equal, so that when the water level is lower than the lower pipe orifice 2111, the differential pressure falls to the vicinity of zero. At this time, the controllable host computer will send out a dry-fire alarm instruction. After the dry combustion alarm, the pressure difference always tends to be zero and is not changed.

And when the pressure difference reaches-372 Pa after reaching the lowest point, the whole pressure difference change is linearly distributed, and the distance from the water level in the current humidification tank 31 to the lower nozzle 2111 is the absolute value of the current pressure difference value through actual measurement. For example, the current pressure difference is-250 Pa, then the current water level distance is 25mm, i.e. the pressure difference is 2.5cmH ₂ O, the current waveform diagram may also predict the current remaining water volume of the humidification tank.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or system that comprises the element. The foregoing embodiment numbers of the present utility model are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the utility model, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims (10)

1. A humidifying device with water level detection, characterized in that the device comprises a humidifying assembly (3) and a pressure difference assembly (2) inserted into the humidifying assembly (3);

the humidifying assembly (3) comprises a humidifying tank (31) and a control host (33) connected with the bottom of the humidifying tank (31);

the humidifying tank (31) comprises a top cover and a cylindrical tank body, wherein the top cover is provided with an air inlet communicated with an air inlet pipe (311) and an air outlet communicated with an air outlet pipe (312) in a penetrating manner, and the air inlet pipe (311) and the air outlet pipe (312) are respectively communicated with an external breathing machine;

the top cover is also provided with a water inlet (313) and a mounting hole (314) for inserting the differential pressure assembly (2) in a penetrating way;

the differential pressure assembly (2) comprises a containing cavity (21) and a partition plate (212), wherein the partition plate (212) completely separates the containing cavity (21) into two containing cavity units, and each containing cavity unit is also communicated with a pressure acquisition port of a corresponding differential pressure sensor (24);

each containing cavity unit is further provided with a corresponding first pressure collecting pipe (211) and a corresponding second pressure collecting pipe (213), the first pressure collecting pipe (211) is inserted below the liquid level in the tank body, the second pressure collecting pipe (213) is inserted above the liquid level in the tank body, and the differential pressure sensor (24) is further connected with the control host machine (33).

2. The humidifying device with water level detection according to claim 1, wherein a heating bottom plate (32) is further arranged at the bottom of the tank body, and the heating bottom plate (32) is controlled to be started by the control host (33).

3. Humidifying device with water level detection according to claim 2, characterized in that the lower nozzle (2111) of the first pressure collecting pipe (211) is spaced 2-5 mm from the heating floor (32).

4. Humidifying device with water level detection according to claim 1, characterized in that the pressure difference assembly (2) is tightly fitted with mounting holes (314) by means of a skirt portion (214) at the lower side.

5. Humidifying device with water level detection according to claim 4, characterized in that an annular sealing ring (3141) is also provided between the skirt portion (214) and the mounting hole (314).

6. The humidifying device with water level detection according to claim 5, wherein a hose (23) is further connected between each accommodating chamber unit and a corresponding collecting port of the differential pressure sensor (24), and an accommodating chamber plugging end cover (22) is further arranged between each hose (23) and the corresponding accommodating chamber unit.

7. Humidifying device with water level detection according to claim 6, characterized in that a flexible membrane (4) is arranged on the side of each housing cell close to the corresponding housing blocking end cap (22).

8. Humidifying device with water level detection according to any one of claims 1 to 7, wherein the lower nozzle (2111) of the first pressure collecting tube (211) is of wedge-shaped structure.

9. Humidification apparatus with water level detection according to claim 8, characterized in that the pressure difference sensor (24) is connected to a control host (33) via a data line (25).

10. A ventilator comprising a humidifying device with water level detection according to any one of claims 1 to 9.