Heating and humidifying device and breathing machine

Abstract

The embodiment of the invention relates to the technical field of human respiration regulation, in particular to a heating and humidifying device and a respirator, the heating and humidifying device comprises a shell, a liquid storage tank, an air pipe and a heater, and the shell is provided with a containing cavity, an air inlet and an air outlet; the liquid storage box is arranged in the containing cavity, an air inlet channel, a heating channel and an air outlet channel which are sequentially communicated are jointly defined by the outer surface of the liquid storage box and the inner surface of the shell, the air inlet channel and the air outlet channel are further located above the heating channel, the air inlet channel is communicated with the air inlet, the air outlet channel is communicated with the air outlet, and the liquid storage box is provided with a liquid outlet and an opening. The liquid outlet and the opening are communicated with the heating channel; one end of the air pipe is located in the liquid storage tank, the other end of the air pipe penetrates through the opening and then extends into the heating channel, and a gap is formed between the port of the other end of the air pipe and the bottom of the heating channel; the heater is arranged on the shell and used for heating the liquid in the heating channel. In this way, the possibility that liquid of the heating and humidifying device overflows can be reduced.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of human respiratory regulation, and in particular to a heating and humidifying device and a ventilator. Background Art

[0002] The heating and humidifying device is also called a heating humidifier or an active heating humidifier. It is mainly used in ventilators, high-flow meters and oxygen concentrators. It mainly heats the liquid by physical heating methods. The inhaled dry and cold gas flows through the heated liquid to obtain sufficient humidity and temperature, and then the warmed and humidified gas is delivered to the patient to assist in treatment. The existing heating and humidifying device mainly includes a liquid storage area, a heater, an air inlet and an air outlet. The liquid storage area is used to store the liquid to be heated, and the heater is used to heat the liquid in the liquid storage area. The dry and cold gas enters from the air inlet and flows through the liquid storage area to be heated and humidified, and the warmed and humidified gas flows out from the air outlet.

[0003] However, in the process of implementing the present invention, the inventors found that the heating and humidifying devices currently on the market are in a non-moving state when in use, but inevitably the heating and humidifying devices are sometimes moved by external forces, or the heating and humidifying devices need to be transported and moved after use, and the heating and humidifying devices are prone to tilt during the movement. When tilted, the liquid in the liquid storage area of ​​the heating and humidifying device is prone to flow to the air inlet or outlet and thus flow out of the main body of the heating and humidifying device, thereby causing other parts or items outside the main body of the heating and humidifying device to be contaminated or damaged. Summary of the invention

[0004] In view of the above problems, an embodiment of the present invention provides a heating and humidifying device and a ventilator, which overcome the above problems or at least partially solve the above problems.

[0005] According to one aspect of an embodiment of the present invention, a heating and humidifying device is provided, comprising a shell, a liquid storage tank, an air pipe and a heater, the shell being provided with a receiving chamber, an air inlet and an air outlet; the liquid storage tank being provided in the receiving chamber, the outer surface of the liquid storage tank and the inner surface of the shell jointly enclosing an air inlet channel, a heating channel and an air outlet channel which are connected in sequence, the air inlet channel and the air outlet channel being also located above the heating channel, the air inlet channel being connected with the air inlet, the air outlet channel being connected with the air outlet, the liquid storage tank being provided with a liquid outlet and an opening, the liquid outlet and the opening being connected with the heating channel; one end of the air pipe is located at the In the liquid storage tank, the other end of the air pipe passes through the opening and extends into the heating channel, and there is a gap between the port at the other end of the air pipe and the bottom of the heating channel; a heater is arranged on the shell, and the heater is used to heat the liquid in the heating channel; wherein, when the liquid level in the heating channel is lower than the port at the other end of the air pipe, gas can enter the liquid storage tank through the air pipe, allowing the liquid in the liquid storage tank to flow into the heating channel through the liquid outlet, and when the liquid level in the heating channel exceeds the port at the other end of the air pipe and the air pipe is closed, the liquid in the liquid storage tank stops flowing into the heating channel.

[0006] In some embodiments, the trachea includes a tube body and a flexible portion, one end of the tube body is located in the liquid storage tank, the other end of the tube body is connected to one end of the flexible portion, and the other end of the flexible portion passes through the opening; wherein, when the heating and humidifying device is tilted, the trachea is bent at the flexible portion, and the bent flexible portion closes the trachea.

[0007] In some embodiments, the heating and humidifying device further includes a ball valve, and the ball valve is disposed at one end of the flexible portion.

[0008] In some embodiments, the ball valve includes a valve body and a weighted portion, and the valve body is connected to the weighted portion.

[0009] In some embodiments, the flexible portion is provided with an annular groove, the annular groove is arranged around the flexible portion, and the wall portion of the opening of the liquid storage tank is clamped in the annular groove.

[0010] In some embodiments, the shape of the end surface of the other end of the trachea is non-planar.

[0011] In some embodiments, the heating and humidifying device also includes a first extension tube; one end of the first extension tube is connected to the air inlet, the other end of the first extension tube extends to the air inlet channel, and the port of the other end of the first extension tube is suspended in the air inlet channel; and / or, the heating and humidifying device also includes a second extension tube; one end of the second extension tube is connected to the air outlet, the other end of the second extension tube extends to the air outlet channel, and the port of the other end of the second extension tube is suspended in the air outlet channel.

[0012] In some embodiments, the heating and humidifying device also includes a blocking piece, an upper magnet and an electromagnetic element, the upper magnet is fixed to the blocking piece, the electromagnetic element is arranged in the shell, and the electromagnetic element is located below the liquid outlet; when the electromagnetic element generates a first polarity, the electromagnetic element and the upper magnet are attracted to each other to adsorb the blocking piece to the liquid outlet to block the liquid outlet; when the electromagnetic element generates a second polarity, the electromagnetic element and the upper magnet repel each other, and the electromagnetic element drives the blocking piece to detach from the liquid outlet to open the liquid outlet.

[0013] In some embodiments, the heating and humidifying device also includes a blocking piece, an upper magnet, a motor and a lower magnet, the upper magnet is fixed to the blocking piece, the motor is arranged on the shell, the lower magnet is arranged on the output shaft of the motor, and the lower magnet is located below the liquid outlet, and the motor is used to drive the lower magnet to rotate so that the lower magnet cooperates with the upper magnet; when the first pole surface of the lower magnet faces the upper magnet, the lower magnet and the upper magnet attract each other to adsorb the blocking piece to the liquid outlet to block the liquid outlet; when the second pole surface of the lower magnet faces the upper magnet, the lower magnet and the upper magnet repel each other, and the lower magnet drives the blocking piece to disengage from the liquid outlet to open the liquid outlet.

[0014] In some embodiments, the heating and humidifying device also includes a limit member, an upper magnet and an electromagnetic element, wherein the limit member is fixed to the liquid storage tank, the upper magnet is located between the limit member and the liquid storage tank, the electromagnetic element is arranged in the shell, and the electromagnetic element is located below the liquid outlet; when the electromagnetic element generates a first polarity, the electromagnetic element and the upper magnet are attracted to each other to adsorb the upper magnet to the liquid outlet to block the liquid outlet; when the electromagnetic element generates a second polarity, the electromagnetic element and the upper magnet repel each other, and the electromagnetic element drives the upper magnet to separate from the liquid outlet to open the liquid outlet.

[0015] The heating and humidifying device also includes a limit member, an upper magnet, a motor and a lower magnet, the limit member is fixed to the liquid storage tank, the upper magnet is located between the limit member and the liquid storage tank, the motor is arranged on the shell, the lower magnet is arranged on the output shaft of the motor, and the lower magnet is located below the liquid outlet, the motor is used to drive the lower magnet to rotate so that the lower magnet cooperates with the upper magnet; when the first pole surface of the lower magnet faces the upper magnet, the lower magnet and the upper magnet attract each other to adsorb the upper magnet to the liquid outlet to block the liquid outlet; when the second pole surface of the lower magnet faces the upper magnet, the lower magnet and the upper magnet repel each other, and the lower magnet drives the upper magnet to disengage from the liquid outlet to open the liquid outlet.

[0016] According to one aspect of an embodiment of the present invention, a ventilator is provided, comprising the above-mentioned heating and humidifying device.

[0017] The beneficial effects of the embodiments of the present invention are as follows: different from the prior art, the embodiments of the present invention provide a heating and humidifying device, comprising a shell, a liquid storage tank, an air pipe and a heater, the shell being provided with a receiving chamber, an air inlet and an air outlet; the liquid storage tank being provided in the receiving chamber, the outer surface of the liquid storage tank and the inner surface of the shell jointly enclosing an air inlet channel, a heating channel and an air outlet channel which are connected in sequence, the air inlet channel and the air outlet channel being also located above the heating channel, the air inlet channel being connected with the air inlet, the air outlet channel being connected with the air outlet, the liquid storage tank being provided with a liquid outlet and an opening, the liquid outlet and the opening being connected with the heating channel; the air One end of the tube is located in the liquid storage tank, and the other end of the air pipe extends into the heating channel after passing through the opening, and there is a gap between the port at the other end of the air pipe and the bottom of the heating channel; a heater is arranged on the shell, and the heater is used to heat the liquid in the heating channel; wherein, when the liquid level in the heating channel is lower than the port at the other end of the air pipe, gas can enter the liquid storage tank through the air pipe, allowing the liquid in the liquid storage tank to flow into the heating channel through the liquid outlet, and when the liquid level in the heating channel exceeds the port at the other end of the air pipe and the air pipe is closed, the liquid in the liquid storage tank stops flowing into the heating channel. Through the above-mentioned method, with the cooperation of the air pipe and the liquid outlet of the liquid storage tank, the distance between the gap between the port at the other end of the air pipe and the bottom of the heating channel can be adjusted to thereby control the liquid in the heating channel to remain in a small amount. When the heating and humidifying device is tilted, it is difficult for a small amount of liquid to flow out of the shell through the air inlet and the air outlet. In this way, the possibility of the liquid in the heating channel of the heating and humidifying device flowing to the air inlet or the air outlet and thus flowing out of the heating and humidifying device is reduced, thereby reducing the possibility of other components or items outside the main body of the heating and humidifying device being contaminated or damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying creative work.

[0019] Figure 1 is a schematic structural diagram of a heating and humidifying device provided in an embodiment of the present invention;

[0020] Figure 2 It is a structural schematic diagram of a heating and humidifying device provided by an embodiment of the present invention, in which a blocking member is driven by an electromagnetic element to block a liquid outlet;

[0021] Figure 3 It is a structural schematic diagram of a heating and humidifying device provided by an embodiment of the present invention, in which an electromagnetic element drives a blocking member to open a liquid outlet;

[0022] Figure 4 It is a structural schematic diagram of a heating and humidifying device provided by an embodiment of the present invention, in which a blocking member is driven by a lower magnet to block a liquid outlet;

[0023] Figure 5 It is a structural schematic diagram of a heating and humidifying device provided by an embodiment of the present invention, in which a blocking member is driven by a lower magnet to open a liquid outlet;

[0024] Figure 6 It is a structural schematic diagram of a heating and humidifying device provided by an embodiment of the present invention, in which an upper magnet is driven by an electromagnetic element to block a liquid outlet;

[0025] Figure 7 It is a structural schematic diagram of a heating and humidifying device provided by an embodiment of the present invention, in which an electromagnetic element drives an upper magnet to open a liquid outlet;

[0026] Figure 8 It is a structural schematic diagram of a heating and humidifying device provided by an embodiment of the present invention, in which a lower magnet drives an upper magnet to block a liquid outlet;

[0027] Fig. 9 It is a structural schematic diagram of a heating and humidifying device provided by an embodiment of the present invention, in which a lower magnet drives an upper magnet to open a liquid outlet;

[0028] Fig.10 It is a structural schematic diagram of a liquid storage tank provided by an embodiment of the present invention, in which a liquid injection port is closed by a blade assembly;

[0029] Fig.11 It is a structural schematic diagram of a liquid storage tank provided by an embodiment of the present invention, in which a liquid injection port is opened through a blade assembly.

[0030] The reference numerals in the specific implementation manner are as follows:

[0031] 100, heating and humidifying device; 10, housing; 11, air inlet; 12, air outlet; 13, air inlet channel; 14, heating channel; 15, air outlet channel; 16, step; 17, heat conducting plate; 20, liquid storage tank; 21, liquid outlet; 22, opening; 23, liquid injection port; 30, air pipe; 31, tube body; 32, flexible part; 321, ring groove; 40, heater; 50, ball valve; 51, valve Body; 52, weighting part; 60, first extension tube; 70, second extension tube; 80, blocking assembly; 81, blocking member; 82, upper magnet; 83, electromagnetic element; 84, limit member; 841, accommodating chamber; 85, motor; 851, output shaft; 86, lower magnet; 861, first pole face; 862, second pole face; 90, blade assembly; 91, upper blade; 92, connecting rod; 93, lower blade. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0033] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification and in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0034] Heating and humidifying devices are also called heated humidifiers or active heated humidifiers. They are mainly used in ventilators, high-flow meters and oxygen concentrators. Heating and humidifying devices are mainly used to increase the humidity and temperature of the gas (or oxygen) delivered to the patient for breathing. In gas therapy, if sufficient humidity and temperature cannot be guaranteed, the patient's airway will become dry and stimulated by cold airflow, resulting in dry and thick secretions that are difficult to discharge, which in turn causes inflammation and aggravated inflammation. Providing sufficient humidity and appropriate temperature for the respiratory gas used in respiratory therapy not only helps to discharge secretions and eliminate inflammation, but also improves the oxygenation level of the human lungs and improves the treatment effect. The heating and humidifying device mainly heats the liquid through physical heating methods. The inhaled dry and cold gas flows through the heated liquid to obtain sufficient humidity and temperature, and then the warmed and humidified gas is delivered to the patient to assist in treatment. The existing heating and humidification device mainly includes a liquid storage area, a heater, an air inlet and an air outlet. The liquid storage area is used to store the liquid to be heated, and the heater is used to heat the liquid in the liquid storage area. The dry and cold gas enters from the air inlet and flows through the liquid storage area for heating and humidification, and the heated and humidified gas then flows out from the air outlet.

[0035] Existing heating and humidifying devices are in a non-moving state when in use, but inevitably the heating and humidifying devices are sometimes moved by external forces, or the heating and humidifying devices need to be moved after use, and the heating and humidifying devices are prone to tilting during the movement. When tilted, the liquid in the liquid storage area of ​​the heating and humidifying device is prone to flow to the air inlet or outlet and then flow out of the heating and humidifying device body, thereby causing other parts or items outside the heating and humidifying device body to be contaminated or damaged. In addition, the existing common heating and humidifying devices have low heating efficiency and small contact area of ​​the airflow through the liquid surface due to the excessive amount of liquid heated by humidification, and the humidification degree is not high. Most of the oxygen generators lack measures to increase the humidity by heating.

[0036] The embodiment of the present application can control the liquid in the heating channel to a small amount by cooperating with the liquid outlet of the liquid storage tank of the air pipe. The small amount of liquid is difficult to flow out of the air inlet and air outlet of the shell. The liquid storage tank and the shell form an air inlet channel, a heating channel and an air outlet channel, forcing the gas to flow through the liquid surface of the heating channel to enhance the heating and humidification effect of the gas. In this way, the above-mentioned problem can be better solved.

[0037] In order to facilitate readers to understand the inventive concept of the present application, the specific structure of the heating and humidifying device is described below:

[0038] See also Figure 1The heating and humidifying device 100 includes a shell 10, a liquid storage tank 20, an air pipe 30 and a heater 40. The shell 10 is provided with a receiving cavity (not shown), an air inlet 11 and an air outlet 12; the liquid storage tank 20 is arranged in the receiving cavity, and the outer surface of the liquid storage tank 20 and the inner surface of the shell 10 jointly enclose an air inlet channel 13, a heating channel 14 and an air outlet channel 15 which are connected in sequence, and the air inlet channel 13 and the air outlet channel 15 are also located above the heating channel 14, the air inlet channel 13 is connected with the air inlet 11, and the air outlet channel 15 is connected with the air outlet 12, the liquid storage tank 20 is provided with a liquid outlet 21 and an opening 22, and the liquid outlet 21 and the opening 22 are connected with the heating channel 14; one end of the air pipe 30 is located in the storage tank In the liquid tank 20, the other end of the air pipe 30 passes through the opening 22 and extends into the heating channel 14, and there is a gap between the port at the other end of the air pipe 30 and the bottom of the heating channel 14; the heater 40 is arranged on the shell 10, and the heater 40 is used to heat the liquid in the heating channel 14; wherein, when the liquid level in the heating channel 14 is lower than the port at the other end of the air pipe 30, the gas can enter the liquid storage tank 20 through the air pipe 30, allowing the liquid in the liquid storage tank 20 to flow into the heating channel 14 through the liquid outlet 21, and when the liquid level in the heating channel 14 exceeds the port at the other end of the air pipe 30 and the air pipe 30 is closed, the liquid in the liquid storage tank 20 stops flowing into the heating channel 14.

[0039] It can be understood that the above-mentioned heating channel 14 can be set to a flat shape, so that the liquid surface area of ​​the liquid in the heating channel 14 can be increased, thereby increasing the heating area of ​​the liquid in the heating channel 14 by the heater 40, and increasing the contact area between the gas and the liquid in the heating channel 14, so as to enhance the heating and humidification effect of the gas.

[0040] The principle that the air pipe 30 cooperates with the liquid outlet 21 of the liquid storage tank 20 to maintain a certain volume of liquid in the heating channel 14 is further explained here. During the operation of the heating and humidifying device 100, when the liquid in the heating channel 14 exceeds the port at the other end of the air pipe 30 and the port at one end of the air pipe 30 is not submerged by the liquid in the liquid storage tank 20, the liquid outlet 21 of the liquid storage tank 20 will stop discharging water under the action of atmospheric pressure. As the heater 40 heats, the liquid in the heating channel 14 will gradually evaporate and decrease, and the liquid level of the liquid in the heating channel 14 will decrease. When the liquid level is lower than the port at the other end of the air pipe 30, the port at the other end of the air pipe 30 will be exposed to the air, and gas can enter the liquid storage tank 20 through the air pipe 30. The liquid outlet 21 will start to flow out liquid to the heating channel 14 until the liquid level of the liquid in the heating channel 14 exceeds the port at the other end of the air pipe 30, and the liquid outlet 21 stops discharging water again. This cycle is repeated to maintain the liquid in the heating channel 14 at a certain volume.

[0041] In this way, with the cooperation of the air pipe 30 and the liquid outlet 21 of the liquid storage tank 20, the volume of the liquid in the heating channel 14 can be controlled by adjusting the distance of the gap between the port at the other end of the air pipe 30 and the bottom of the heating channel 14. For example, the distance of the gap between the port at the other end of the air pipe 30 and the bottom of the heating channel 14 can be set to be smaller. In this way, the volume of the liquid in the heating channel 14 can be maintained at a small amount. When the heating and humidifying device 100 moves, it is difficult for a small amount of liquid to flow out of the shell 10 through the air inlet 11 and the air outlet 12.

[0042] In addition, in the existing heating and humidifying devices, the heating efficiency is low because too much liquid is humidified and heated, and it takes a long time to reach the required temperature. In addition, the contact area of ​​the airflow through the liquid surface is small, and the humidification degree is not high. The heating and humidifying device 100 of the present application can control the volume of the liquid in the heating channel 14 to remain small, without heating all the liquid in the entire liquid storage tank 20, so that the small amount of liquid in the heating channel 14 can be quickly heated to the required temperature. Furthermore, the outer surface of the liquid storage tank 20 and the inner surface of the shell 10 jointly enclose an air inlet channel 13, a heating channel 14 and an air outlet channel 15 that are connected in sequence, so that the gas is forced to pass through the air inlet channel 13, the heating channel 14 and the air outlet channel 15 in sequence (such as Figure 1 As shown by the arrow, more gas can flow through the liquid surface of the heating channel 14, and the heating channel 14 is flat to increase the contact area between the gas and the liquid surface, thereby improving the humidification degree of the gas.

[0043] Regarding the above-mentioned air pipe 30, the air pipe 30 includes a tube body 31 and a flexible portion 32, one end of the tube body 31 is located in the liquid storage tank 20, the other end of the tube body 31 is connected to one end of the flexible portion 32, and the other end of the flexible portion 32 passes through the opening 22; wherein, when the heating and humidifying device 100 is tilted, the air pipe 30 is bent at the flexible portion 32, and the bent flexible portion 32 closes the air pipe 30, so that the liquid in the liquid storage tank 20 is difficult to flow out to the heating channel 14 through the bent air pipe 30, so that the liquid in the heating channel 14 is still maintained in a small amount, and the small amount of liquid in the heating channel 14 is not easy to flow out of the housing 10 from the air inlet 11 or the air outlet 12. wherein, the flexible portion 32 is made of soft material, and its structure can be a thin-walled or thin-film structure, for example, it can be designed as a soft thin-walled structure of silicone material.

[0044] In some embodiments, the area of ​​the opening 22 of the liquid storage tank 20 is smaller than the area of ​​the smallest cross-section of the flexible portion 32, so that after the flexible portion 32 passes through the opening 22 of the liquid storage tank 20, the side wall of the flexible portion 32 will be squeezed inward by the wall of the opening 22, so that the flexible portion 32 is easier to bend at the concave portion when the heating and humidifying device 100 is tilted; or, the flexible portion 32 is provided with an annular groove 321, and the annular groove 321 is arranged around the flexible portion 32, and the liquid storage tank 20 is clamped in the annular groove 321 at the wall of the opening 22, so that the flexible portion 32 is easier to bend at the annular groove 321 when the heating and humidifying device 100 is tilted.

[0045] In some embodiments, the shape of the end surface of the other end of the flexible portion 32 is non-planar (for example, sawtooth or triangular, etc.), and the non-planar end surface can overcome the tension of the liquid. In actual application scenarios, when the liquid level of the liquid in the heating channel 14 exceeds the port at the other end of the flexible portion 32, the liquid in the liquid storage tank 20 stops flowing out to the heating channel 14 through the liquid outlet 21. With the normal operation of the heating and humidification device 100, the liquid in the heating channel 14 is gradually consumed. After a period of time, the liquid level of the liquid in the heating channel 14 will be lower than the port at the other end of the flexible portion 32. At this time, due to the tension of the liquid, a small amount of liquid will still adhere to the port at the other end of the flexible portion 32 to block the air pipe 30, thereby affecting the gas entering the liquid storage tank 20 through the air pipe 30. The liquid in the liquid storage tank 20 cannot flow out to the heating channel 14 through the liquid outlet 21 to maintain a constant liquid volume in the heating channel 14. Making the end surface of the other end of the flexible portion 32 non-planar can better overcome the tension of the liquid and reduce the possibility of the liquid adhering to the port at the other end of the flexible portion 32 to block the air pipe 30, thereby accurately controlling the liquid volume in the heating channel 14.

[0046] In some embodiments, the heating and humidifying device 100 also includes a ball valve 50, which is arranged at one end of the flexible part 32. A through hole (not shown) is arranged in the middle of the ball valve 50. When the heating and humidifying device 100 is not tilted, the through hole of the ball valve 50 is respectively connected to the tube body 31 and the flexible part 32, that is, the trachea 30 remains connected. When the heating and humidifying device 100 is tilted, the ball valve 50 will tilt synchronously under the action of gravity. Under the action of the ball valve 50, the flexible part 32 is easier to bend, thereby closing the trachea 30. Furthermore, the ball valve 50 includes a valve body 51 and a weighted portion 52, the valve body 51 is connected to the weighted portion 52, the valve body 51 is made of a lighter material, and the weighted portion 52 is made of a heavier material, so that the weight of the weighted portion 52 is much greater than the weight of the valve body 51. In this way, the ball valve 50 is a light-top and heavy-bottom structure, similar to a "tumbler". When the heating and humidifying device 100 is restored to an upright position from being tilted, the ball valve 50 with the "tumbler" structure can quickly restore from being tilted to being upright, thereby driving the trachea 30 to restore from being tilted to being upright.

[0047] In some embodiments, the distance between the air inlet 11 and the bottom of the heating channel 14 is greater than the distance between the port at the other end of the flexible portion 32 and the bottom of the heating channel 14; the distance between the air outlet 12 and the bottom of the heating channel 14 is greater than the distance between the port at the other end of the flexible portion 32 and the bottom of the heating channel 14. In this way, when the heating and humidifying device 100 operates normally, the height of the liquid in the heating channel 14 will be roughly maintained at the port at the other end of the flexible portion 32, so the liquid level of the liquid in the heating channel 14 will not exceed the air inlet 11 and the air outlet 12, that is, when the heating and humidifying device 100 operates normally, the liquid in the heating channel 14 will not flow out from the air inlet 11 and the air outlet 12. Preferably, the air inlet 11 and the air outlet 12 are respectively arranged at the two ends of the top of the shell 10, and of course, the air inlet 11 and the air outlet 12 can also be arranged on the side wall of the shell 10.

[0048] In some embodiments, the heating channel 14 is provided with a step 16, which is used to enclose the liquid in the heating channel 14. The height of the step 16 is greater than the distance between the port at the other end of the flexible portion 32 and the bottom of the heating channel 14. In this way, the liquid in the heating channel 14 will not overflow from the step 16. When the heating and humidification device 100 moves, the step 16 can block part of the liquid in the heating channel 14, thereby reducing the possibility of more liquid flowing to the air inlet 11 and the air outlet 12 where the shell 10 flows.

[0049] In some embodiments, the heating and humidifying device 100 further includes a first extension tube 60; one end of the first extension tube 60 is connected to the air inlet 11, the other end of the first extension tube 60 extends toward the air inlet passage 13, and the port of the other end of the first extension tube 60 is suspended in the air inlet passage 13, so that when the heating and humidifying device 100 is tilted, it is difficult for the liquid of the heating and humidifying device 100 to submerge the port of the other end of the first extension tube 60, that is, it is difficult for the liquid of the heating and humidifying device 100 to flow out of the housing 10 through the port of the other end of the first extension tube 60 Outside; and / or, the heating and humidifying device 100 also includes a second extension tube 70; one end of the second extension tube 70 is connected to the air outlet 12, the other end of the second extension tube 70 extends to the air outlet channel 15, and the port at the other end of the second extension tube 70 is suspended in the air outlet channel 15, so that when the heating and humidifying device 100 is tilted, it is difficult for the liquid in the heating and humidifying device 100 to submerge the port at the other end of the second extension tube 70, that is, it is difficult for the liquid in the heating and humidifying device 100 to flow out of the shell 10 through the port at the other end of the second extension tube 70.

[0050] In some embodiments, please refer to Figure 2-3The heating and humidifying device 100 also includes a blocking component 80, which includes a blocking piece 81, an upper magnet 82 and an electromagnetic element 83. The upper magnet 82 is fixed to the blocking piece 81, and the electromagnetic element 83 is arranged on the shell 10, and the electromagnetic element 83 is located below the liquid outlet 21; when the electromagnetic element 83 generates a first polarity, the electromagnetic element 83 and the upper magnet 82 are attracted to each other to adsorb the blocking piece 81 to the liquid outlet 21 to block the liquid outlet 21; when the electromagnetic element 83 generates a second polarity, the electromagnetic element 83 and the upper magnet 82 repel each other, and the electromagnetic element 83 drives the blocking piece 81 to separate from the liquid outlet 21 to open the liquid outlet 21. Of course, in actual application scenarios, when the electromagnetic element 83 is not connected to the power supply, the blocking piece 81 and the upper magnet 82 can block the liquid outlet 21 under the action of their own gravity. When the liquid outlet 21 needs to be opened, the electromagnetic element 83 is connected to the power supply so that the electromagnetic element 83 generates a second polarity, and the electromagnetic element 83 repels the upper magnet 82. The electromagnetic element 83 can drive the blocking piece 81 to separate from the liquid outlet 21 to open the liquid outlet 21. When the liquid outlet 21 needs to be closed, the electromagnetic element 83 is disconnected from the power supply, and the blocking piece 81 and the upper magnet 82 continue to block the liquid outlet 21 under the action of their own gravity. In this way, when the heating and humidifying device 100 is working normally, the liquid outlet 21 can be opened by making the electromagnetic element 83 generate the second polarity to cooperate with the air pipe 30 to maintain the liquid volume of the heating channel 14. When the heating and humidifying device 100 is tilted, the liquid outlet 21 can be closed by artificially making the electromagnetic element 83 generate the first polarity or disconnecting the electromagnetic element 83. The liquid in the liquid storage tank 20 is difficult to flow out of the heating channel 14 through the liquid outlet 21. The liquid in the heating channel 14 is still a small amount and it is difficult to flow out of the housing 10 through the air inlet 11 or the air outlet 12. Among them, the shape of the blocking member 81 is not limited, and can be a boss shape or a hemispherical shape; the shape of the upper magnet 82 is not limited, and can be a block shape or a sphere; the electromagnetic element 83 is preferably a coil.

[0051] In some embodiments, please refer to Figure 4-5The electromagnetic element 83 can be replaced by a motor 85 and a lower magnet 86. For example, the blocking assembly 80 only includes a blocking member 81, an upper magnet 82, a motor 85 and a lower magnet 86. The upper magnet 82 is fixed to the blocking member 81, the motor 85 is disposed on the housing 10, the lower magnet 86 is disposed on the output shaft 851 of the motor 85, and the lower magnet 86 is located below the liquid outlet 21. The motor 85 is used to drive the lower magnet 86 to rotate so that the lower magnet 86 and the liquid outlet 21 are connected. The upper magnet 82 cooperates with each other; when the first pole surface 861 of the lower magnet 86 faces the upper magnet 82, the lower magnet 86 and the upper magnet 82 attract each other to adsorb the blocking member 81 to the liquid outlet 21 to block the liquid outlet 21; when the second pole surface 862 of the lower magnet 86 faces the upper magnet 82, the lower magnet 86 and the upper magnet 82 repel each other, and the lower magnet 86 drives the blocking member 81 to separate from the liquid outlet 21 to open the liquid outlet 21. Of course, in actual application scenarios, when the second pole surface 862 of the lower magnet 86 deviates from the upper magnet 82, the blocking member 81 and the upper magnet 82 can block the liquid outlet 21 under the action of their own gravity. In this way, when the heating and humidifying device 100 works normally, by controlling the motor 85 to rotate to drive the second pole surface 862 of the lower magnet 86 toward the upper magnet 82, the liquid outlet 21 can be opened to cooperate with the air pipe 30 to maintain the liquid volume in the heating channel 14. When the heating and humidifying device 100 is tilted, by controlling the motor 85 to rotate to drive the second pole surface 862 of the lower magnet 86 to deviate from the upper magnet 82 or the first pole surface 861 of the lower magnet 86 toward the upper magnet 82, the liquid outlet 21 can be closed, and the liquid in the liquid storage tank 20 is difficult to flow out to the heating channel 14 through the liquid outlet 21. The liquid in the heating channel 14 is still a small amount, and it is difficult for it to flow out of the shell 10 through the air inlet 11 or the air outlet 12. Among them, the motor 85 is preferably a single-output shaft micro-rotary motor, and the shape of the lower magnet 86 is not limited, and can be block-shaped or spherical; preferably, the first pole surface 861 and the second pole surface 862 are arranged opposite to each other, so that the output shaft of the motor 85 can realize the switching between the two states of the first pole surface 861 of the lower magnet 86 facing the upper magnet 82 and the second pole surface 862 of the lower magnet 86 facing the upper magnet 82 by rotating 180 degrees forward and reverse.

[0052] In some embodiments, please refer to Figure 6-7The blocking assembly 80 may be another structure, wherein the blocking assembly 80 only includes a stopper 84, an upper magnet 82 and an electromagnetic element 83, wherein the stopper 84 is fixed to the liquid storage tank 20, the upper magnet 82 is located between the stopper 84 and the liquid storage tank 20, and the electromagnetic element 83 is disposed on the housing 10, and the electromagnetic element 83 is located below the liquid outlet 21; when the electromagnetic element 83 generates a first polarity, the electromagnetic element 83 and the upper magnet 82 are attracted to each other, so as to adsorb the upper magnet 82 to the liquid outlet 21 and block the liquid outlet 21; when the electromagnetic element 83 generates a second polarity, the electromagnetic element 83 and the upper magnet 82 are repelled, and the electromagnetic element 83 drives the upper magnet 82 to separate from the liquid outlet 21 to open the liquid outlet 21. Similarly, when the electromagnetic element 83 is powered off, the upper magnet 82 will block the liquid outlet 21 under the action of its own gravity.

[0053] In some embodiments, please refer to Figure 8-9 The electromagnetic element 83 can be replaced by a motor 85 and a lower magnet 86. For example, the blocking assembly 80 only includes a stopper 84, an upper magnet 82, a motor 85 and a lower magnet 86. The stopper 84 is fixed to the liquid storage tank 20. The upper magnet 82 is located between the stopper 84 and the liquid storage tank 20. The motor 85 is disposed on the housing 10. The lower magnet 86 is disposed on an output shaft 851 of the motor 85, and the lower magnet 86 is located below the liquid outlet 21. The motor 85 is used to drive the lower magnet 84 to move the motor 85. 6 is rotated so that the lower magnet 86 cooperates with the upper magnet 82; when the first pole surface 861 of the lower magnet 86 faces the upper magnet 82, the lower magnet 86 and the upper magnet 82 attract each other to adsorb the upper magnet 82 to the liquid outlet 21 and block the liquid outlet 21; when the second pole surface 862 of the lower magnet 86 faces the upper magnet 82, the lower magnet 86 and the upper magnet 82 repel each other, and the lower magnet 86 drives the upper magnet 82 to separate from the liquid outlet 21 to open the liquid outlet 21. Similarly, when the second pole surface 862 of the lower magnet 86 deviates from the upper magnet 82, the upper magnet 82 will block the liquid outlet 21 under the action of its own gravity.

[0054] Preferably, the shape of the above-mentioned limiter 84 can be a concave shape, and the upper magnet 82 is located in the accommodating cavity 841 enclosed by the limiter 84 and the liquid storage tank 20. The accommodating cavity 841 is used to limit the displacement space of the upper magnet 82. The limiter 84 can be a hollow structure, so that the accommodating cavity 841 can be connected to the liquid storage tank 20, that is, the limiter 84 will not block the liquid outlet 21 of the liquid storage tank 20. It is understandable that the limiter 84 can also be other shapes. The above-mentioned upper magnet 82 and the lower magnet 86 are preferably permanent magnets. Of course, they can also be other magnets. The shape of the upper magnet 82 and the lower magnet 86 can be square, cylindrical or disc-shaped. Of course, they can also be other shapes.

[0055] In some embodiments, the heating and humidifying device 100 also includes a posture sensor (not shown) and a controller (not shown). The posture sensor is arranged on the shell 10, and the posture sensor is used to detect the posture of the heating and humidifying device 100; when the blocking component 80 includes an electromagnetic element 83, the controller is electrically connected to the posture sensor and the electromagnetic element 83 respectively, and the controller is used to control the power off of the electromagnetic element 83 and the polarity generated by the electromagnetic element 83 according to the signal transmitted by the posture sensor. When the heating and humidifying device 100 operates normally and is not tilted, the electromagnetic element 83 generates a second polarity, so that the above-mentioned blocking member 81 or the upper magnet 82 opens the liquid outlet 21. When the heating and humidifying device 100 is tilted, the posture sensor detects that the heating and humidifying device 100 is tilted, and then transmits an electrical signal to the controller. After receiving the electrical signal, the controller controls the electromagnetic element 83 to be powered off or controls the electromagnetic element 83 to generate the first polarity, so that the above-mentioned blocking member 81 or the upper magnet 82 blocks the liquid outlet 21. When the blocking component 80 includes a motor 85 and a lower magnet 86, the controller is electrically connected to the posture sensor and the motor 85, respectively. The controller is used to control the rotation of the motor 85 according to the signal transmitted by the posture sensor. When the heating and humidifying device 100 operates normally and is not tilted, the second pole surface 862 of the lower magnet 86 faces the upper magnet 82, and the lower magnet 86 repels the upper magnet 82, so that the above-mentioned blocking member 81 or the upper magnet 82 opens the liquid outlet 21. When the heating and humidifying device 100 is tilted, the posture sensor detects that the heating and humidifying device 100 is tilted, and then transmits an electrical signal to the controller. After receiving the electrical signal, the controller controls the motor 85 to rotate so that the second pole surface 862 of the lower magnet 86 deviates from the upper magnet 82 or the first pole surface 861 of the lower magnet 86 toward the upper magnet 82, so that the above-mentioned blocking member 81 or the upper magnet 82 blocks the liquid outlet 21.

[0056] In some embodiments, the heating and humidifying device 100 also includes a heat conducting plate 17, which is fixed at the bottom of the shell 10 between the liquid storage tank 20, and the outer surface of the heat conducting plate 17 and the liquid storage tank 20 encloses the above-mentioned heating channel 14, and the above-mentioned step 16 is arranged on the heat conducting plate 17, and the heat conducting plate 17 and the bottom of the shell 10 enclose a compartment (not marked in the figure), and the above-mentioned heater 40, electromagnetic element 83, motor 85 and lower magnet 86 are all arranged in the compartment to make the layout of the heater 40, electromagnetic element 83, motor 85 and lower magnet 86 more beautiful, the heater 40 transfers heat to the heat conducting plate 17, and the heat conducting plate 17 then transfers heat to the liquid in the heating channel 14; the material of the heat conducting plate 17 is a non-metallic material that is easy to conduct heat, so that the heat conducting plate 17 will not shield the magnetic field generated by the electromagnetic element 83 and the lower magnet 86. For example, the heat conducting plate 17 can be a ceramic material.

[0057] Furthermore, the heater 40 may be a heating circuit, which is electrically connected to the heat conducting plate 17, and which can control the heat conducting plate 17 to generate heat. The heating circuit may be attached to the side of the heat conducting plate 17 that is away from the heating channel 14, or the heating circuit may be disposed inside the heat conducting plate 17, so that the heating circuit will not contact the liquid in the heating channel 14, thereby reducing the possibility of a short circuit in the heating circuit. It is understandable that the heat conducting plate 17 and the heater 40 may be designed as one body, for example, the heat conducting plate 17 and the heater 40 may be integrated to form a heating disk, and the heating disk may heat the liquid in the heating channel 14 after being powered on, so that the number of components may be reduced and the volume of the heating and humidifying device 100 may be reduced.

[0058] In some embodiments, please refer to Figure 10-11 The liquid storage tank 20 is provided with a liquid filling port 23, and the user can add liquid to the liquid storage tank 20 through the liquid filling port 23. The distance between the liquid filling port 23 and the bottom of the liquid storage tank 20 is smaller than the distance between the port at one end of the air pipe 30 and the bottom of the liquid storage tank 20. In this way, when the liquid storage tank 20 is filled with liquid, the port at one end of the air pipe 30 is above the liquid surface of the liquid in the liquid storage tank 20 without affecting the conduction of the air pipe 30.

[0059] Furthermore, the liquid injection port 23 is arranged at the top of the liquid storage tank 20, and the heating and humidifying device 100 also includes a blade assembly 90, and the blade assembly 90 includes an upper blade 91, a connecting rod 92 and a lower blade 93. The upper blade 91 is slidably arranged at the top of the liquid storage tank 20, and the lower blade 93 is slidably arranged at the bottom of the liquid storage tank 20. One end of the connecting rod 92 is connected to the upper blade 91, and the other end of the connecting rod 92 is connected to the lower blade 93. When the liquid storage tank 20 does not need to be replenished with liquid, the upper blade 91 closes the liquid injection port 23, and the lower blade 93 opens the liquid outlet 21 of the liquid storage tank 20. When the liquid storage tank 20 needs to be replenished with liquid, the user can slide the upper blade 91 relative to the top of the liquid storage tank 20 to open the liquid injection port 23, and at the same time, the connecting rod 92 will drive the lower blade 93 to slide relative to the bottom of the liquid storage tank 20 to close the liquid outlet 21. At this time, the liquid replenished to the liquid storage tank 20 through the liquid injection port 23 will not flow out from the liquid outlet 21.

[0060] In the embodiment of the present invention, by cooperating with the air pipe 30 and the liquid outlet 21 of the liquid storage tank 20, the volume of the liquid in the heating channel 14 can be effectively controlled, and the entire liquid in the entire liquid storage tank 20 does not need to be heated, thereby improving the heating efficiency; by controlling the liquid in the heating channel 14 to be a small amount, the possibility of it flowing out of the air inlet 11 and the air outlet 12 can be reduced; by cooperating with the air inlet channel 13, the heating channel 14 and the air outlet channel 15, the gas can be forced to flow through the liquid surface of the heating channel 14, thereby improving the temperature and humidity effect of the gas; by the flattened design of the heating channel 14, the gas and the liquid in the heating channel 14 can be improved. The contact area of ​​the body can be increased to further improve the humidification effect of the gas; through the cooperation of the flexible part 32 of the air pipe 30 and the ball valve 50, the air pipe 30 can be bent and blocked when the heating and humidifying device 100 moves or tilts, reducing the possibility that the liquid in the liquid storage tank 20 enters the heating channel 14 through the air pipe 30 and overflows the shell 10; through the cooperation of the blocking member, the upper magnet 82, the electromagnetic element 83 and the limiter 84, the liquid outlet 21 of the liquid storage tank 20 can be blocked when the heating and humidifying device 100 moves or tilts, reducing the possibility that the liquid in the liquid storage tank 20 enters the heating channel 14 through the liquid outlet 21 and overflows the shell 10. In summary, through the structure of the present application, the possibility of internal liquid overflowing from the heating and humidifying device 100 in the working state and the non-working state can be reduced, and the reliability of the heating and humidifying device 100 in the portable and mobile scene can be improved.

[0061] The present invention further provides an embodiment of a ventilator, which includes the above-mentioned heating and humidifying device 100. The function and structure of the heating and humidifying device 100 can be referred to the above-mentioned embodiment, and will not be described in detail here.

[0062] It can be understood that the heating and humidifying device 100 of the present application can also be applied to a humidifier, a high flow meter and an oxygen generator.

[0063] It should be noted that the preferred embodiments of the present invention are given in the specification and drawings of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments are not used as additional limitations on the content of the present invention. The purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as the scope of the present invention; further, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should belong to the protection scope of the claims attached to the present invention.

Claims

1. A heating and humidifying device, characterized in that: include: The shell is provided with a receiving cavity, an air inlet and an air outlet; a liquid storage tank disposed in the receiving cavity, wherein the outer surface of the liquid storage tank and the inner surface of the shell jointly enclose an air inlet channel, a heating channel, and an air outlet channel that are connected in sequence, the air inlet channel and the air outlet channel are also located above the heating channel, the air inlet channel is connected to the air inlet, the air outlet channel is connected to the air outlet, the liquid storage tank is provided with a liquid outlet and an opening, the liquid outlet and the opening are connected to the heating channel; an air pipe, one end of the air pipe being located in the liquid storage tank, the other end of the air pipe passing through the opening and extending into the heating channel, and a gap being defined between a port at the other end of the air pipe and the bottom of the heating channel; a heater, disposed on the housing, and configured to heat the liquid in the heating channel; In which, when the liquid level in the heating channel is lower than the port at the other end of the air pipe, gas can enter the liquid storage tank through the air pipe, allowing the liquid in the liquid storage tank to flow into the heating channel through the liquid outlet; when the liquid level in the heating channel exceeds the port at the other end of the air pipe and the air pipe is closed, the liquid in the liquid storage tank stops flowing into the heating channel.

2. The heating and humidifying device according to claim 1, characterized in that: The air pipe includes a tube body and a flexible portion, one end of the tube body is located in the liquid storage tank, the other end of the tube body is connected to one end of the flexible portion, and the other end of the flexible portion passes through the opening; When the heating and humidifying device is tilted, the trachea is bent at the flexible portion, and the bent flexible portion closes the trachea.

3. The heating and humidifying device according to claim 2, characterized in that: The heating and humidifying device further includes a ball valve, which is arranged at one end of the flexible portion.

4. The heating and humidifying device according to claim 3, characterized in that: The ball valve includes a valve body and a weighted portion, wherein the valve body is connected to the weighted portion.

5. The heating and humidifying device according to claim 2, characterized in that: The flexible portion is provided with an annular groove, which is arranged around the flexible portion, and the wall portion of the opening of the liquid storage tank is clamped in the annular groove.

6. The heating and humidifying device according to claim 1, characterized in that: The heating and humidifying device further includes a first extension tube; One end of the first extension tube is connected to the air inlet, and the other end of the first extension tube extends toward the air inlet passage, and a port of the other end of the first extension tube is suspended in the air inlet passage; and / or The heating and humidifying device further includes a second extension tube; One end of the second extension tube is connected to the air outlet, the other end of the second extension tube extends toward the air outlet channel, and a port at the other end of the second extension tube is suspended in the air outlet channel.

7. The heating and humidifying device according to any one of claims 1 to 6, characterized in that: The heating and humidifying device further comprises a blocking member, an upper magnet and an electromagnetic element, wherein the upper magnet is fixed to the blocking member, the electromagnetic element is disposed in the housing, and the electromagnetic element is located below the liquid outlet; When the electromagnetic element generates a first polarity, the electromagnetic element and the upper magnet are attracted to each other, so as to attract the blocking member to the liquid outlet and block the liquid outlet; When the electromagnetic element generates the second polarity, the electromagnetic element repels the upper magnet, and the electromagnetic element drives the blocking member to separate from the liquid outlet to open the liquid outlet.

8. The heating and humidifying device according to any one of claims 1 to 6, characterized in that: The heating and humidifying device further includes a blocking member, an upper magnet, a motor, and a lower magnet, wherein the upper magnet is fixed to the blocking member, the motor is disposed in the housing, the lower magnet is disposed on an output shaft of the motor, and the lower magnet is located below the liquid outlet, and the motor is used to drive the lower magnet to rotate so that the lower magnet cooperates with the upper magnet; When the first pole surface of the lower magnet faces the upper magnet, the lower magnet and the upper magnet attract each other, so as to attract the blocking member to the liquid outlet and block the liquid outlet; When the second pole surface of the lower magnet faces the upper magnet, the lower magnet repels the upper magnet, and the lower magnet drives the blocking member to separate from the liquid outlet to open the liquid outlet.

9. The heating and humidifying device according to any one of claims 1 to 6, characterized in that: The heating and humidifying device further includes a limiter, an upper magnet, and an electromagnetic element, wherein the limiter is fixed to the liquid storage tank, the upper magnet is located between the limiter and the liquid storage tank, and the electromagnetic element is disposed in the housing and is located below the liquid outlet; When the electromagnetic element generates the first polarity, the electromagnetic element and the upper magnet are attracted to each other, so as to attract the upper magnet to the liquid outlet and block the liquid outlet; When the electromagnetic element generates the second polarity, the electromagnetic element repels the upper magnet, and the electromagnetic element drives the upper magnet to separate from the liquid outlet, so as to open the liquid outlet.

10. The heating and humidifying device according to any one of claims 1 to 6, characterized in that: The heating and humidifying device further includes a limiter, an upper magnet, a motor, and a lower magnet, wherein the limiter is fixed to the liquid storage tank, the upper magnet is located between the limiter and the liquid storage tank, the motor is disposed in the housing, the lower magnet is disposed on the output shaft of the motor, and the lower magnet is located below the liquid outlet, and the motor is used to drive the lower magnet to rotate so that the lower magnet cooperates with the upper magnet; When the first pole surface of the lower magnet faces the upper magnet, the lower magnet and the upper magnet attract each other, so as to attract the upper magnet to the liquid outlet and block the liquid outlet; When the second pole surface of the lower magnet faces the upper magnet, the lower magnet repels the upper magnet, and the lower magnet drives the upper magnet to separate from the liquid outlet, thereby opening the liquid outlet.

11. A ventilator, characterized in that: The invention comprises a heating and humidifying device as described in any one of claims 1 to 10.

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