Humidifier for breathing machine and breathing machine

Abstract

The invention discloses a humidifier for a breathing machine and the breathing machine. The humidifier comprises a containing cavity, an air inlet channel used for inputting air into the containing cavity and an air outlet channel used for outputting air from the containing cavity. The humidifier comprises a heating plate arranged on the bottom wall of the containing cavity and a heat collecting cover arranged above the heating plate, the containing cavity comprises a heating area located in the heat collecting cover and a water storage area located outside the heat collecting cover, and the water storage area is communicated with the heating area and surrounds the periphery of the heating area. A first air outlet of the air inlet channel is communicated with the heating area, and a second air inlet of the air outlet channel is communicated with the heating area; the arrangement of the heat collecting cover is beneficial to improving the heating efficiency.

Description

Technical Field

[0001] The present invention relates to the field of medical equipment, and in particular to a humidifier for a ventilator and a ventilator. Background Art

[0002] Home ventilators are typically used to relieve and improve symptoms such as snoring, hypopnea, and sleep apnea during sleep. They can be used in home environments or in medical institutions.

[0003] A home ventilator includes a main unit component, a humidifier component, etc. The humidifier component is arranged in the air path of the ventilator and can store water inside. By heating the water in the humidifier to generate water vapor, the gas flowing through the humidifier is heated and humidified, thereby avoiding discomfort caused by excessively dry gas entering the patient's respiratory tract and improving the patient's comfort.

[0004] In the prior art, the humidifier serves as a water storage chamber, and there is no internal separation structure between heated water and stored water. All stored water is heated evenly, the preheating speed is slow, the heating efficiency is low, and a lot of heat is dissipated to the outside through the humidifier wall. Summary of the invention

[0005] One of the purposes of the present invention is to provide a humidifier for a ventilator to solve the technical problem of low heating efficiency of the humidifier in the prior art.

[0006] To achieve one of the above-mentioned purposes of the invention, one embodiment of the present invention provides a humidifier for a ventilator, comprising a accommodating cavity, an air inlet channel for inputting gas into the accommodating cavity, and an air outlet channel for outputting gas from the accommodating cavity; the humidifier comprises a heating plate arranged on the bottom wall of the accommodating cavity, and a heat collecting cover arranged above the heating plate, the accommodating cavity comprises a heating zone located inside the heat collecting cover and a water storage zone located outside the heat collecting cover, the water storage zone is connected to the heating zone and surrounds the outer periphery of the heating zone, the first air outlet of the air inlet channel is connected to the heating zone, and the second air inlet of the air outlet channel is connected to the heating zone.

[0007] As a further improvement of an embodiment of the present invention, the heating plate is arranged in the middle area of ​​the bottom wall.

[0008] As a further improvement of one embodiment of the present invention, the bottom wall has a first length along the first direction and a first width along the second direction, the heating plate has a second length along the first direction and a second width along the second direction, the first direction and the second direction are horizontal directions and perpendicular to each other; the second length is at least three quarters of the first length, and the second width is at least three quarters of the first width.

[0009] As a further improvement of one embodiment of the present invention, the heat collecting cover includes a first end and a second end arranged opposite to each other in the vertical direction, the first end is connected to the first air outlet and the second air inlet, the second end is connected to the bottom wall of the accommodating cavity, and the second end is arranged around the outer periphery of the heating plate.

[0010] As a further improvement of an embodiment of the present invention, the second end gradually shrinks toward the first end.

[0011] As a further improvement of one embodiment of the present invention, the humidifier includes a connecting channel connecting the air inlet channel and the air outlet channel, and the connecting channel is located between the air inlet channel and the air outlet channel; the first end of the heat collecting cover is connected to the connecting channel, and the bottom wall of the connecting channel is provided with a connecting hole penetrating in the vertical direction.

[0012] As a further improvement of an embodiment of the present invention, a plurality of the communicating holes are evenly and spaced apart from each other on the bottom wall of the connecting channel.

[0013] As a further improvement of an embodiment of the present invention, the air outlet channel includes a pressure balance hole arranged on its tube wall, and the pressure balance hole connects the air outlet channel and the water storage area.

[0014] As a further improvement of an embodiment of the present invention, the humidifier includes a first shell and a second shell that surround the accommodating cavity, and a first sealing ring disposed between the first shell and the second shell.

[0015] As a further improvement of an embodiment of the present invention, the heating plate is disposed on the bottom wall of the second shell, and the second end of the heat collecting cover is connected to the bottom wall via a second sealing ring.

[0016] As a further improvement of an embodiment of the present invention, the second end of the heat collecting cover and / or the second sealing ring is provided with a communication port, and the communication port is connected with the heating area and the water storage area.

[0017] To achieve one of the above-mentioned purposes of the invention, one embodiment of the present invention further provides a ventilator, comprising a main unit and a humidifier for a ventilator according to any of the above-mentioned technical solutions, wherein the main unit comprises an airflow driving device, and the airflow driving device is connected to the air inlet channel.

[0018] Compared with the prior art, the humidifier for a ventilator provided by the present invention has the following beneficial effects: the humidifier is provided with a heat collecting cover to divide the containing cavity into a water storage area and a heating area, and the water in the heating area can be heated separately to improve the heating efficiency; the water storage area is arranged around the heating area, and the heat dissipated outward from the heating area can preheat the water storage area, thereby improving the utilization rate of heat and the heating speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a perspective view of a humidifier according to one embodiment of the present invention.

[0020] Figure 2 is an exploded view of a humidifier in one embodiment of the present invention.

[0021] Figure 3 Schematic diagram of a first shell and a heat collecting cover in one embodiment of the present invention.

[0022] Figure 4 It is a cross-sectional view of a humidifier in a top view according to one embodiment of the present invention.

[0023] Figure 5 It is a cross-sectional view of a humidifier in a side view according to one embodiment of the present invention.

[0024] Figure 6 It is a cross-sectional view of a humidifier in other states according to one embodiment of the present invention. DETAILED DESCRIPTION

[0025] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0026] As used herein, terms indicating spatial relative positions such as "upper," "above," "lower," and "below" are used for the purpose of convenience to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. Terms of spatial relative position may be intended to include different orientations of the device in use or operation in addition to the orientation shown in the drawings. For example, if the device in the figure is turned over, units described as being "below" or "beneath" other units or features will be located "above" the other units or features. Thus, the exemplary term "below" can encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein interpreted accordingly.

[0027] The present invention provides a humidifier 100 for a ventilator, see Figure 1-2 Schematic diagram of the structure.

[0028] The humidifier 100 includes a containing chamber 101 , an air inlet channel 11 for inputting gas into the containing chamber 101 , and an air outlet channel 12 for outputting gas from the containing chamber 101 .

[0029] Specifically, the humidifier 100 includes a first shell 10 and a second shell 20, which are assembled to form a receiving cavity 101. The humidifier 100 includes a heating plate 40 disposed on the bottom wall of the receiving cavity 101.

[0030] In the prior art, the accommodating cavity 101 is used to store water and heat it at the same time, with a slow preheating speed and low heating efficiency, and a lot of wasted heat is consumed to the outside through the walls of the first shell and the second shell.

[0031] In one embodiment, the humidifier 100 includes a heat collecting cover 30 disposed above the heating plate 30, and the accommodating cavity 101 includes a heating area 102 located inside the heat collecting cover 30 and a water storage area 103 located outside the heat collecting cover 30, and the water storage area 103 is connected to the heating area 102 and surrounds the outer periphery of the heating area 102.

[0032] It can be seen that the heat collecting cover 30 of this case is arranged above the heating plate 30 to separate the heating area 102 located in the middle and the water storage area 103 located on the periphery, and is used to collect the water vapor and heat generated by the heating area 102. The structure is simple and the design is ingenious.

[0033] It can be seen that, on the one hand, the accommodating cavity 101 is divided into a water storage area 103 and a heating area 102 by the heat collecting cover 30, and the water in the heating area 102 can be heated separately with a relatively small amount of water, thereby improving the heating speed and energy conversion efficiency.

[0034] On the other hand, the water storage area 103 is arranged around the heating area 102, and the heat dissipated outward from the heating area 102 can be used to preheat the water storage area 103, thereby improving the utilization rate of heat, and the water in the water storage area 103 is preheated before entering the heating area 102 for heating, thereby further improving the heating speed. The air area above the water storage area 103 without water can also play a certain role in thermal damping, thereby avoiding direct heat exchange between the air area above the heating area 102 and the outside world, thereby reducing energy dissipation.

[0035] The first air outlet 111 of the air inlet channel 11 is connected to the heating area 102, and the second air inlet 121 of the air outlet channel 12 is connected to the heating area 102. In this way, the gas of the air inlet channel 11 enters the heating area 102 and mixes with water vapor to become moist warm gas, which is then output from the air outlet channel 12 and enters the breathing mask, thereby improving the use effect of the patient.

[0036] Specifically, combined Figure 3-4As shown, the first shell 10 is provided with an air inlet channel 11 and an air outlet channel 12, wherein the air inlet channel 11 includes a first air inlet 112 located outside the accommodating cavity 101 and a first air outlet 111 located inside the accommodating cavity 101. It can be understood that the gas from the host enters the air inlet channel 11 from the first air inlet 112, and then enters the accommodating cavity 101 through the first air outlet 111. The air outlet channel 12 includes a second air outlet 122 located outside the accommodating cavity 101 and a second air inlet 121 located inside the accommodating cavity 101. It can be understood that the humidified gas from the accommodating cavity 101 enters the air outlet channel 12 from the second air inlet 121, and enters the external breathing mask through the second air outlet 122.

[0037] The first air inlet 112 and the second air outlet 122 are arranged on the same side of the first shell and are parallel to each other. When the humidifier 100 and the host are assembled, the first air inlet 112 and the second air outlet 122 can be assembled into the host at the same time to reduce the noise radiated outward by the humidifier 100 through the first air inlet 112 and the second air outlet 122.

[0038] In one embodiment, the humidifier 100 includes a connecting channel 13 connecting the air inlet channel 11 and the air outlet channel 12, and the connecting channel 13 is located between the air inlet channel 11 and the air outlet channel 12; the first end of the heat collecting cover 30 is connected to the connecting channel 13, and the bottom wall of the connecting channel 13 is provided with a connecting hole 131 penetrating in the vertical direction.

[0039] It can be seen that the gas from the first air outlet 111 enters the connecting channel 13, and the water vapor from the heating zone 102 also enters the connecting channel 13 through the connecting hole 131. The two are mixed in the connecting channel 13, thereby becoming humidified gas and entering, and entering the heating zone 102 through the connecting hole 131 to mix with the water vapor, and then the humidified gas flows to the second air inlet 121 and flows to the breathing mask. It can be understood that the gas from the first air outlet 111 can also partially enter the heating zone 102 and mix with the water vapor. In short, the gas from the air inlet channel 11 will mix with the water vapor to become humidified gas after flowing to the connecting channel 13, and then flow to the air outlet channel 12 together.

[0040] In a specific embodiment, a plurality of the communication holes 131 are evenly and spaced apart from each other on the bottom wall of the connection channel 13 , which is beneficial for orderly flow of gas there.

[0041] The air inlet channel 11, the connecting channel 13 and the air outlet channel 12 are arranged in a U shape, and the speed of the gas slows down when the connecting channel 13 turns, thereby delaying the mixing time with the water vapor.

[0042] The air inlet channel 11 and the air outlet channel 12 extend a longer distance into the accommodating cavity 101, which is equivalent to the connecting channel 13 being located at a position at least greater than one-third of the length of the accommodating cavity 101, more specifically, close to a position at half the length of the accommodating cavity 101, thereby preventing gas from accumulating in the connecting channel 13 and also preventing gas from flowing back to the air inlet channel 11.

[0043] A gas driving device is provided in the host connected to the humidifier, and the gas driving device is connected to the air inlet channel 11 to drive the gas in the air inlet channel 11 to flow into the accommodating cavity 101. At the same time, the water vapor in the heating area 102 will also gather upward and enter the connecting channel 13 through the connecting hole 131. The humidified gas will flow toward the air outlet channel 12 instead of flowing back to the air inlet channel 11.

[0044] In one embodiment, the air outlet channel 12 includes a pressure balancing hole 123 arranged on its tube wall, and the pressure balancing hole 123 connects the air outlet channel 12 and the water storage area 103, and is used to balance the pressure level of the gas above the water storage area 103, so that it is consistent with the gas pressure above the air outlet channel 12 and the heating area 102, thereby ensuring that the water stored in the heating area 102 and the water storage area 103 are at the same level.

[0045] In one embodiment, the humidifier 100 includes a first sealing ring 50 disposed between the first shell 10 and the second shell 20 to enhance the sealing performance of the accommodating chamber 101 .

[0046] In one embodiment, the heating plate 40 is disposed in the middle area of ​​the bottom wall, and the bottom wall of the accommodating cavity 101 is also the bottom wall of the second shell 20. Figure 5-6 As shown, the heat collecting cover 30 is arranged on the outer periphery of the heating plate 40, which is equivalent to that the heating plate 40 is only located in the heat collecting cover 30 to heat the heating area 102; in another embodiment, the heating plate 40 can also extend beyond the range of the heat collecting cover 30 to the bottom of the water storage area 103, and also has a heating effect on the water storage area 103.

[0047] In one embodiment, the bottom wall of the accommodating cavity 101 has a first length along the first direction and a first width along the second direction, the heating plate 40 has a second length along the first direction and a second width along the second direction, the first direction and the second direction are horizontal directions and perpendicular to each other; the second length is at least three quarters of the first length, and the second width is at least three quarters of the first width.

[0048] It can be understood that the heat collecting cover 30 in this case is arranged above the heating plate 40, so it will not affect the area of ​​the bottom wall where the heating plate 40 is arranged. When the humidifier 100 has a bottom wall of the same area, the larger the area of ​​the heating plate 40, the faster the heating speed of the heating zone 102.

[0049] The heat collecting cover 30 includes a first end and a second end arranged opposite to each other in the vertical direction, the first end is connected to the first air outlet 111 and the second air inlet 121, specifically, the first end is connected to the above-mentioned connecting channel 13, and the first air outlet 111 and the second air inlet 121 are respectively located at two ends of the connecting channel 13.

[0050] In one embodiment, the heat collecting cover 30 is integrally formed with the first shell 10 . In other embodiments, the first end may also be connected to the bottom wall of the connecting channel 13 by other connection methods such as ultrasonic welding.

[0051] The second end is connected to the bottom wall of the accommodating cavity 101 , and the second end is disposed around the outer periphery of the heating plate 40 . The heating plate 40 heats only the area inside the heat collecting cover 30 .

[0052] In one embodiment, the second end of the heat collecting cover 30 is connected to the bottom wall via a second sealing ring 60 . In other embodiments, the heat collecting cover 30 may also be integrally formed with the second shell 20 and then connected to the first shell 10 .

[0053] The second end gradually shrinks toward the first end, and the side wall of the heat collecting cover 30 is an arc-shaped wall, which has the function of guiding the gas flow direction. The heat and water vapor in the heating area 102 are guided to gradually gather toward the first end, and enter the connecting channel 13 through the connecting hole 131, thereby improving the humidification and heating effect. The water vapor and heat in the heating area 102 gather toward the connecting hole 131, which can also help to push the gas out of the outlet channel 12.

[0054] The second end of the heat collecting cover 30 and / or the second sealing ring 60 is provided with a connecting port 61. In a specific embodiment, at least one side edge of the second sealing ring 60 is provided with a connecting port 61, and the connecting port 61 connects the heating area 102 and the water storage area 103. When the water in the heating area 102 is reduced due to evaporation, the water in the water storage area 130 is replenished to the heating area 102 through the connecting port 61.

[0055] This case also protects a respirator including a main unit and a humidifier 100 for the respirator in any of the above technical solutions, wherein the main unit includes an airflow driving device, which is connected to the air inlet channel 11 to drive the gas to flow to the connecting channel 13, and then to the air outlet channel 12 and finally out to the breathing mask.

[0056] The beneficial effects of the present invention are as follows: the humidifier 100 is provided with a heat collecting cover 30, which divides the accommodating cavity 101 into a water storage area 103 and a heating area 102, so that the water in the heating area 102 can be heated separately, thereby effectively improving the heating efficiency; the water storage area 103 is arranged around the heating area 102, and the heat dissipated outward from the heating area 102 is used to preheat the water in the water storage area 103, thereby improving the utilization rate of heat, and the air area above the water storage area 103 without water can also play a certain thermal damping role, thereby avoiding direct heat exchange between the air area above the heating area 102 and the outside world, and reducing energy dissipation; the heat and water vapor generated by the heating area 102 are gathered toward the first end, and are introduced into the connecting channel 13 of the humidifier through the connecting hole 131, thereby effectively improving the humidification and heating efficiency.

[0057] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0058] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A humidifier for a ventilator, characterized in that: It includes a accommodating cavity, an air inlet channel for inputting gas into the accommodating cavity, and an air outlet channel for outputting gas from the accommodating cavity; the humidifier includes a heating plate arranged on the bottom wall of the accommodating cavity, and a heat collecting cover arranged above the heating plate, the accommodating cavity includes a heating area located inside the heat collecting cover and a water storage area located outside the heat collecting cover, the water storage area is connected to the heating area and surrounds the outer periphery of the heating area, the first air outlet of the air inlet channel is connected to the heating area, and the second air inlet of the air outlet channel is connected to the heating area.

2. The humidifier for a breathing machine according to claim 1, characterized in that: The heating plate is arranged in the middle area of ​​the bottom wall.

3. The humidifier for a breathing machine according to claim 1, characterized in that: The bottom wall has a first length along the first direction and a first width along the second direction, the heating plate has a second length along the first direction and a second width along the second direction, the first direction and the second direction are horizontal directions and perpendicular to each other; the second length is at least three quarters of the first length, and the second width is at least three quarters of the first width.

4. The humidifier for a breathing machine according to claim 1, characterized in that: The heat collecting cover comprises a first end and a second end arranged opposite to each other in the vertical direction, the first end is connected to a first air outlet and a second air inlet, the second end is connected to the bottom wall of the accommodating cavity, and the second end is arranged around the periphery of the heating plate.

5. The humidifier for a breathing machine according to claim 4, characterized in that: The second end tapers toward the first end.

6. The humidifier for a breathing machine according to claim 4, characterized in that: The humidifier includes a connecting channel connecting an air inlet channel and an air outlet channel, wherein the connecting channel is located between the air inlet channel and the air outlet channel; the first end of the heat collecting cover is connected to the connecting channel, and a connecting hole penetrating along a vertical direction is provided on the bottom wall of the connecting channel.

7. The humidifier for a breathing machine according to claim 6, characterized in that: A plurality of the communicating holes are evenly and spacedly arranged on the bottom wall of the connecting channel.

8. The humidifier for a breathing machine according to claim 1, characterized in that: The air outlet channel comprises a pressure balance hole arranged on the tube wall thereof, and the pressure balance hole communicates with the air outlet channel and the water storage area.

9. The humidifier for a breathing machine according to claim 1, characterized in that: The humidifier comprises a first shell and a second shell surrounding the accommodating cavity, and a first sealing ring arranged between the first shell and the second shell.

10. The humidifier for a breathing machine according to claim 9, characterized in that: The heating plate is disposed on the bottom wall of the second shell, and the second end of the heat collecting cover is connected to the bottom wall via a second sealing ring.

11. The humidifier for a breathing machine according to claim 10, characterized in that: The second end of the heat collecting cover and / or the second sealing ring is provided with a communication port, and the communication port is connected with the heating area and the water storage area.

12. A ventilator, characterized in that: It comprises a host and a humidifier for a ventilator according to any one of claims 1 to 11, wherein the host comprises an airflow driving device, and the airflow driving device is connected to the air inlet channel.

Images