Humidifier for breathing machine

Abstract

The humidifier for the breathing machine comprises an upper shell, a lower shell and a partition plate, a water storage cavity is formed in the lower shell, the upper shell is detachably connected with the lower shell, an air inlet channel and an air outlet channel are formed in the upper shell, an air inlet and an air outlet are formed in the shell wall of the upper shell, the air inlet channel is used for communicating the air inlet with the water storage cavity, and the partition plate is used for communicating the air outlet with the water storage cavity. The air outlet channel is used for communicating the air outlet and the water storage cavity, at least part of the air inlet channel is in a U shape, an outlet of the air inlet channel right faces the water surface of the water storage cavity, and the outlet of the air inlet channel and an inlet of the air outlet channel are formed in the two ends of the upper shell in the first direction respectively. According to the humidifier for the breathing machine, air can be fully humidified and heated, so that the air with appropriate temperature and stable humidity is provided for a patient, the respiratory tract of the patient is prevented from being stimulated, and the comfort degree of treatment is improved.

Description

Technical Field

[0001] This utility model relates to the field of ventilator technology, and in particular to a humidifier for ventilators. Background Technology

[0002] During ventilator treatment, the humidifier is a key component. Its main function is to humidify and heat the dry medical gas (such as air) from the gas source to achieve temperature and humidity conditions close to the physiological state of the human body. This avoids irritating the patient's respiratory mucosa, maintains the normal function of respiratory cilia, prevents secretions from drying out, and reduces the risk of complications such as lung infections.

[0003] Most humidifiers on the market currently employ a straight-through or simple baffled airflow design. In a straight-through design, gas enters directly from the inlet above the water reservoir and flows rapidly to the outlet, resulting in a short airflow path and limited contact time with the water surface or water vapor. In a simple baffled design, although a few baffles alter the gas flow direction, the overall path remains relatively simple, and the gas's residence time within the water reservoir is still short, failing to adequately mix with water vapor. Consequently, both of these traditional designs generally suffer from uneven humidification and low heating efficiency, leading to significant fluctuations in the temperature and humidity of the output gas, failing to achieve suitable temperature and humidity, and thus irritating the patient's respiratory tract. Utility Model Content

[0004] This invention provides a humidifier for ventilators to address the technical shortcomings of existing humidifiers in terms of poor humidification and heating effects, thereby achieving sufficient humidification and heating of the air and improving the patient's breathing comfort.

[0005] This utility model provides a humidifier for a ventilator, comprising:

[0006] The lower shell has a water storage cavity inside.

[0007] The upper shell is detachably connected to the lower shell. The upper shell is provided with an air inlet channel and an air outlet channel. The shell wall of the upper shell is provided with an air inlet and an air outlet. The air inlet channel is used to connect the air inlet to the water storage chamber, and the air outlet channel is used to connect the air outlet to the water storage chamber.

[0008] A partition is disposed inside the upper shell. The partition includes a first partition, a second partition, and a third partition. The first partition and the second partition are spaced apart to define the air intake passage, and at least a portion of the air intake passage is U-shaped.

[0009] The first partition and the third partition are respectively disposed on both sides of the second partition. One end of the third partition is connected to the inner wall surface of the upper shell, and the other end of the third partition is connected to the second partition. The third partition, the second partition, and the inner wall surface of the upper shell define the air outlet channel, and the air outlet channel is L-shaped.

[0010] The outlet of the air inlet channel is positioned directly opposite the water surface of the water storage chamber, and the outlet of the air inlet channel and the inlet of the air outlet channel are respectively located at both ends of the upper shell in the first direction.

[0011] In some embodiments, the humidifier for the ventilator further includes:

[0012] The middle cover is disposed inside the upper shell. The middle cover has a middle inlet and a middle outlet. The middle inlet is connected to the outlet of the air intake channel, and the middle outlet is connected to the inlet of the air outlet channel.

[0013] In some embodiments, the air intake channel is provided with a guide section, which bends from the upper shell toward the intermediate inlet.

[0014] In some embodiments, the humidifier for the ventilator includes a sealing strip, and the end of the partition connected to the middle cover is provided with a groove, and the sealing strip is disposed in the groove so that the middle cover and the partition are sealed together.

[0015] In some embodiments, the intermediate outlet extends along a second direction and is elongated, wherein the second direction is perpendicular to the first direction.

[0016] In some embodiments, in the second direction, the size of the intermediate outlet is L, and the size of the water storage cavity is M, where L / M = 0.7-0.9.

[0017] In some embodiments, in the first direction, one end of the middle cover is fixedly connected to the upper shell, the middle inlet is provided at one end of the middle cover, and the other end of the middle cover is spaced apart from the inner wall surface of the upper shell to define the middle outlet.

[0018] In some embodiments, the air inlet and the air outlet are arranged on the same side of the upper housing.

[0019] In some embodiments, the middle cover is provided with:

[0020] The first guide plate is disposed on the outer periphery of the middle inlet and on the side of the middle cover facing the lower shell.

[0021] In some embodiments, the middle cover is provided with:

[0022] The second guide plate is located at the middle outlet and is located on the side of the middle cover facing the upper shell.

[0023] The humidifier for a ventilator in this embodiment of the invention improves air temperature and humidity through various structural designs:

[0024] First, the air intake channel adopts a U-shape, which extends the airflow path and increases the heat exchange area, so that the air is fully preheated before entering the water storage chamber.

[0025] Secondly, the air intake channel outlet is set vertically to the water surface of the water storage chamber, and the air flow is made to penetrate the water surface directly by vertical impact, which greatly improves the gas-liquid mixing efficiency.

[0026] Meanwhile, the air intake outlet and air outlet inlet are located at the farthest points on the left and right sides of the upper shell, forcing the air to traverse the entire water storage chamber, thus extending the residence time of the air in the water storage chamber and increasing the temperature and humidity of the air.

[0027] The above three structural aspects ultimately achieve a significant improvement in air temperature and humidity. Therefore, the humidifier for the ventilator in this embodiment of the invention can fully humidify and heat the air, thereby providing patients with air of suitable temperature and stable humidity, thus avoiding irritation to the patient's respiratory tract and improving the comfort of treatment. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a cross-sectional schematic diagram of the humidifier for a ventilator provided by this utility model.

[0030] Figure 2 This is a schematic diagram of the upper shell of the humidifier for a ventilator provided by this utility model.

[0031] Figure 3 This is a schematic diagram of the assembly of the upper shell and middle cover of the humidifier for a ventilator provided by this utility model.

[0032] Figure 4 This is an exploded view of the upper shell, sealing strip, and middle cover of the humidifier for a ventilator provided by this utility model.

[0033] Figure label:

[0034] 100. Humidifier for ventilators;

[0035] 1. Upper shell; 11. Air inlet channel; 111. Air guide section; 12. Air outlet channel; 13. Air inlet; 14. Air outlet; 15. Baffle; 151. First baffle; 152. Second baffle; 153. Third baffle; 154. Groove; 16. Sealing strip;

[0036] 2. Lower shell; 21. Water storage cavity;

[0037] 3. Middle cover; 31. Middle inlet; 32. Middle outlet; 33. First guide vane; 34. Second guide vane. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0039] like Figures 1 to 4 As shown, the humidifier 100 for a ventilator in this embodiment of the present invention includes an upper shell 1, a lower shell 2 and a partition 15, and a water storage chamber 21 is provided inside the lower shell 2.

[0040] The upper shell 1 is detachably connected to the lower shell 2. The upper shell 1 is provided with an air inlet channel 11 and an air outlet channel 12. The shell wall of the upper shell 1 is provided with an air inlet 13 and an air outlet 14. The air inlet channel 11 is used to connect the air inlet 13 with the water storage chamber 21, and the air outlet channel 12 is used to connect the air outlet 14 with the water storage chamber 21.

[0041] The partition 15 is disposed inside the upper shell 1. The partition 15 includes a first partition 151, a second partition 152 and a third partition 153. The first partition 151 and the second partition 152 are spaced apart to define the air intake passage 11, and at least part of the air intake passage 11 is U-shaped.

[0042] The first partition 151 and the third partition 153 are respectively located on both sides of the second partition 152. One end of the third partition 153 is connected to the inner wall of the upper shell 1, and the other end of the third partition 153 is connected to the second partition 152. The third partition 153, the second partition 152, and the inner wall of the upper shell 1 define an air outlet channel 12, and the air outlet channel 12 is L-shaped.

[0043] The outlet of the air inlet channel 11 is positioned directly opposite the water surface of the water storage chamber 21, and the outlet of the air inlet channel 11 and the inlet of the air outlet channel 12 are respectively located at both ends of the upper shell 1 in the first direction.

[0044] For example, for ease of description, the technical solution of this application will be described below with the left and right directions as the first direction, wherein the left and right directions are as follows: Figure 1 As shown.

[0045] The lower shell 2 has a water storage cavity 21 for holding water, and the upper shell 1 is detachably connected to the lower shell 2 to form a sealed space.

[0046] The upper shell 1 has independent air inlet channel 11 and air outlet channel 12. The shell wall of the upper shell 1 is provided with air inlet port 13 and air outlet port 14, which are connected to external pipelines. The air inlet channel 11 is used to guide dry air from the air inlet port 13 to the water storage chamber 21, and the air outlet channel 12 is used to transport heated and humidified air from the water storage chamber 21 to the air outlet port 14. For example, the upper shell 1 is provided with an air inlet pipe and an air outlet pipe. The air inlet pipe defines the air inlet channel 11, and the air outlet pipe defines the air outlet channel.

[0047] At least a portion of the intake passage 11 is U-shaped, meaning that part of the intake passage 11 is U-shaped, while another part is of other shapes, such as straight, curved, or U-shaped. Alternatively, the entire intake passage 11 may be U-shaped. Accordingly, the shapes of the first baffle 151 and the second baffle 152 are designed to follow the shape of the intake passage 11. The fact that at least a portion of the intake passage 11 is U-shaped increases the length and area of ​​the intake passage 11, thereby increasing the residence time of air in the intake passage 11, increasing the contact area between the air and the intake passage 11, and thus improving the preheating effect on the air.

[0048] The first partition 151 is located to the left of the second partition 152, and the first partition 151 and the second partition 152 are spaced apart, thereby defining an air intake passage 11 between the first partition 151 and the second partition 152.

[0049] The third partition 153 is straight, with one end connected to the inner wall of the upper shell 1 and the other end connected to the bend of the second partition 152. Thus, the third partition 153, the second partition 152, and the upper shell 1 define an L-shaped air outlet channel 12. Consequently, an air inlet channel 11 and an air outlet channel 12 are defined on both sides of the second partition 152, effectively utilizing the space within the upper shell 1 and making its structure compact.

[0050] The outlet of the air intake channel 11 is positioned directly opposite the water surface of the water storage chamber 21. In other words, the outlet of the air intake channel 11 is perpendicular to the water surface. As a result, the air flowing out of the outlet of the air intake channel 11 can directly penetrate the water surface, thereby forcing the air to come into contact with the water and thus improving the mixing effect of the air and water.

[0051] The outlet of the air inlet channel 11 and the inlet of the air outlet channel 12 are respectively located at the two ends of the upper shell 1 in the left-right direction. For example, the outlet of the air inlet channel 11 is located at the left end of the upper shell 1, and the inlet of the air outlet channel 12 is located at the right end of the upper shell 1. As a result, the distance between the outlet of the air inlet channel 11 and the inlet of the air outlet channel 12 is relatively long, which increases the residence time of air in the water storage chamber 21, thereby facilitating the thorough mixing of air with water or water vapor in the water storage chamber 21 and improving the temperature and humidity of the air.

[0052] The humidifier 100 for a ventilator in this embodiment of the invention improves air temperature and humidity through various structural designs:

[0053] First, the air intake channel 11 adopts a U-shape. By extending the airflow path of the air intake channel 11 and increasing the heat exchange area, the air is fully preheated before entering the water storage chamber 21.

[0054] Secondly, the outlet of the air intake channel 11 is set vertically to the water surface of the water storage chamber 21, and the air flow is made to penetrate the water surface directly by the vertical impact method, which greatly improves the gas-liquid mixing efficiency.

[0055] Meanwhile, the outlet of the air intake channel 11 and the inlet of the air outlet channel 12 are respectively located at the farthest points on the left and right ends of the upper shell 1, forcing the air to traverse the entire space of the water storage chamber 21, extending the residence time of the air in the water storage chamber 21, and increasing the temperature and humidity of the air.

[0056] The above three structural aspects ultimately achieve a significant improvement in air temperature and humidity. Therefore, the humidifier 100 for ventilators in this embodiment of the invention can fully humidify and heat the air, thereby providing patients with air of suitable temperature and stable humidity, thus avoiding irritation to the patient's respiratory tract and improving the comfort of treatment.

[0057] Furthermore, the humidifier 100 for a ventilator in this embodiment of the present invention can fully heat and humidify the air, thereby avoiding condensation due to insufficient air temperature, and thus eliminating the risk of bacterial growth and pipeline contamination that may be caused by the accumulation of condensate.

[0058] In some embodiments, such as Figure 3 As shown, the humidifier 100 for the ventilator also includes a middle cover 3, which is located inside the upper shell 1. The middle cover 3 has a middle inlet 31 and a middle outlet 32. The middle inlet 31 is connected to the outlet of the air intake channel 11, and the middle outlet 32 ​​is connected to the inlet of the air outlet channel 12.

[0059] The middle cover 3 is detachably disposed at the bottom of the upper shell 1, for example, the middle cover 3 is snapped into the upper shell 1.

[0060] The middle cover 3 is used to seal the air intake channel 11 and the air outlet channel 12. The lower surface of the middle cover 3 is flat, thus forming a flat flow guide interface above the air storage cavity. This allows the airflow descending vertically from the air intake channel 11 to smoothly turn along the lower surface of the middle cover 3 after contacting the water surface, thereby avoiding airflow turbulence and ensuring sufficient mixing and smooth outflow of air.

[0061] In some embodiments, the air intake passage 11 is provided with a guide section 111, which bends from the upper shell 1 toward the intermediate inlet 31. The guide section 111 is located at the outlet of the air intake passage 11 and bends toward the location of the intermediate inlet 31 so as to guide the air entering the air intake passage 11 toward the intermediate inlet 31.

[0062] In some embodiments, such as Figure 4 As shown, the humidifier 100 for a ventilator includes a sealing strip 16. The end of the partition 15 connected to the middle cover 3 is provided with a groove 154, and the sealing strip 16 is provided in the groove 154 so that the middle cover 3 and the partition 15 are sealed together.

[0063] For example, each partition 15 has a groove 154 machined at the end where it is connected to the middle cover 3, that is, each partition 15 has a groove 154 at its lower end.

[0064] The groove 154 extends along the contour of the end face of the partition 15. A sealing strip 16 is embedded in the groove 154. When the upper shell 1 and the middle cover 3 are assembled, the sealing strip 16 is elastically deformed under compression and fits tightly against the upper surface of the middle cover 3, thereby achieving a sealed connection between the middle cover 3 and the partition 15. This effectively prevents air crossflow between the air inlet channel 11 and the air outlet channel 12, ensuring that the air flows along the set path, and further improving the stability of the humidifier 100 for the ventilator and the reliability of gas transmission.

[0065] In some embodiments, the intermediate outlet 32 ​​extends along a second direction and is elongated, with the second direction perpendicular to the first direction.

[0066] For example, for ease of description, the technical solution of this application will be described below with the front-back direction as the second direction, where the front-back direction is as follows: Figure 1 As shown.

[0067] The middle outlet 32 ​​extends in the front-to-back direction and is elongated, so that the outflowing air can be fully diffused in the front-to-back direction to form a uniform and stable laminar flow. This special outlet shape significantly reduces the airflow velocity by increasing the gas outflow cross-sectional area, avoiding the jet effect and vortex generation caused by traditional circular small hole outlets, further reducing flow resistance, and reducing the noise generated by airflow, providing patients with a quieter respiratory treatment environment.

[0068] In some embodiments, in the second direction (i.e., the front-to-back direction), the size of the intermediate outlet 32 ​​is L, and the size of the water storage chamber 21 is M, with L / M = 0.7-0.9. For example, L / M is 0.7, 0.8, or 0.9.

[0069] When L / M = 0.7-0.9, the length of the middle outlet 32 ​​can ensure sufficient gas diffusion area so that the air can fully expand to form a stable laminar flow, while retaining an appropriate edge buffer area, which avoids airflow concentration in the central area and eliminates flow dead zones on both sides.

[0070] In some embodiments, in a first direction, one end of the middle cover 3 is fixedly connected to the upper shell 1, the middle inlet 31 is provided at one end of the middle cover 3, and the other end of the middle cover 3 is spaced apart from the inner wall surface of the upper shell 1 to define the middle outlet 32.

[0071] For example, the left end of the middle cover 3 is snapped into the upper shell 1, the middle inlet 31 is located at the left end of the middle cover 3, and the right end of the middle cover 3 is spaced apart from the inner wall of the upper shell 1, thereby defining the middle outlet 32. Thus, the right end of the middle cover 3 does not need to be connected to the upper shell 1, thereby simplifying the installation steps.

[0072] In some embodiments, the air inlet 13 and the air outlet 14 are arranged on the same side of the upper shell 1.

[0073] For example, both the air inlet 13 and the air outlet 14 are located on the left side of the upper shell 1. The arrangement of the air inlet 13 and the air outlet 14 on the same side greatly simplifies the external pipeline connection and improves the ease of installation.

[0074] In some embodiments, the middle cover 3 is provided with a first guide plate 33, which is located on the outer periphery of the middle inlet 31 and on the side of the middle cover 3 facing the lower shell 2.

[0075] The first guide plate 33 is disposed on the lower surface of the middle cover 3. The first guide plate 33 helps to guide the airflow in the air intake channel 11 to be directed vertically toward the water surface of the water storage chamber 21, thereby increasing the contact area between air and water and improving the mixing effect of air and water.

[0076] In some embodiments, the middle cover 3 is provided with a second guide plate 34, which is located at the middle outlet 32 ​​and is located on the side of the middle cover 3 facing the upper shell 1.

[0077] The position and orientation of the second guide plate 34 can guide the air in the water storage chamber 21 to enter the air outlet channel 12 more smoothly through the middle outlet 32, reducing airflow resistance and turbulence.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A humidifier for a ventilator, characterized in that, include: The lower shell has a water storage cavity inside. The upper shell is detachably connected to the lower shell. The upper shell is provided with an air inlet channel and an air outlet channel. The shell wall of the upper shell is provided with an air inlet and an air outlet. The air inlet channel is used to connect the air inlet to the water storage chamber, and the air outlet channel is used to connect the air outlet to the water storage chamber. A partition is disposed inside the upper shell. The partition includes a first partition, a second partition, and a third partition. The first partition and the second partition are spaced apart to define the air intake passage, and at least a portion of the air intake passage is U-shaped. The first partition and the third partition are respectively disposed on both sides of the second partition. One end of the third partition is connected to the inner wall surface of the upper shell, and the other end of the third partition is connected to the second partition. The third partition, the second partition, and the inner wall surface of the upper shell define the air outlet channel, and the air outlet channel is L-shaped. The outlet of the air inlet channel is positioned directly opposite the water surface of the water storage chamber, and the outlet of the air inlet channel and the inlet of the air outlet channel are respectively located at both ends of the upper shell in the first direction.

2. The humidifier for a ventilator according to claim 1, characterized in that, Also includes: The middle cover is disposed inside the upper shell. The middle cover has a middle inlet and a middle outlet. The middle inlet is connected to the outlet of the air intake channel, and the middle outlet is connected to the inlet of the air outlet channel.

3. The humidifier for a ventilator according to claim 2, characterized in that, The air intake channel is provided with a guide section, which bends from the upper shell toward the middle inlet.

4. The humidifier for a ventilator according to claim 3, characterized in that, The humidifier for the ventilator includes a sealing strip. The end of the partition connected to the middle cover has a groove, and the sealing strip is disposed in the groove so that the middle cover and the partition are sealed together.

5. The humidifier for a ventilator according to claim 2, characterized in that, The intermediate outlet extends along a second direction and is elongated, with the second direction perpendicular to the first direction.

6. The humidifier for a ventilator according to claim 5, characterized in that, In the second direction, the size of the intermediate outlet is L, and the size of the water storage cavity is M, where L / M = 0.7-0.

9.

7. The humidifier for a ventilator according to claim 2, characterized in that, In the first direction, one end of the middle cover is fixedly connected to the upper shell, the middle inlet is located at one end of the middle cover, and the other end of the middle cover is spaced apart from the inner wall surface of the upper shell to define the middle outlet.

8. The humidifier for a ventilator according to claim 1, characterized in that, The air inlet and the air outlet are arranged on the same side of the upper shell.

9. The humidifier for a ventilator according to claim 2, characterized in that, The middle cover is provided with: The first guide plate is disposed on the outer periphery of the middle inlet and on the side of the middle cover facing the lower shell.

10. The humidifier for a ventilator according to claim 9, characterized in that, The middle cover is provided with: The second guide plate is located at the middle outlet and is located on the side of the middle cover facing the upper shell.

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