WO2018103700A1

WO2018103700A1 - Humidifying device used for breathing machine and breathing machine

Info

Publication number: WO2018103700A1
Application number: PCT/CN2017/115027
Authority: WO
Inventors: 刘丽君; 易萍虎; 庄志
Original assignee: 北京怡和嘉业医疗科技股份有限公司
Priority date: 2016-12-07
Filing date: 2017-12-07
Publication date: 2018-06-14
Also published as: CN106620987A

Abstract

Provided are a humidifying device (100, 100') used for a breathing machine and the breathing machine. The humidifying device (100, 100') comprises: a base (110), the base (110) having a power connector; a liquid container (120, 120'), the liquid container (120, 120') being able to be placed on the base (110), the liquid container (120, 120') having an air inlet (121) and an air outlet (122), and a bottom part of the liquid container (120, 120') comprising a heating member made of materials containing iron element; and a first electromagnetic induction heater (131), the first electromagnetic induction heater (131) being arranged in the base (110), the first electromagnetic induction heater (131) comprising a first electromagnetic induction coil (131a), and two ends of the first electromagnetic induction coil (131a) being connected to the power connector. The humidifying device (100, 100') has the advantages, such as a high heat conversion rate, energy saving, environmental protection and cost saving. Furthermore, the risk of scald due to exposure of a high-temperature area can be avoided, and the service life of a product can be effectively prolonged. In addition, since all areas located in an alternating magnetic field fall within a heating area, heating without a dead angle can be realised, thus a heated object is uniformly heated.

Description

Humidification device for ventilator and ventilator

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 201611117250.9, filed on Dec.

Technical field

The present invention relates to the field of ventilator equipment, and in particular to a humidification apparatus for a ventilator and a ventilator including the same.

Background technique

A ventilator, as its name implies, is a special medical mechanical device that assists people in breathing. It can replace, control or change the normal physiological breathing of a person, thereby increasing the ventilation of the lungs, improving the respiratory function, and reducing the respiratory consumption. . In life, ventilators have been widely used, mainly including invasive ventilators, non-invasive ventilators, etc., but regardless of the type of ventilator, humidification devices are generally added. The humidification device is an important component of the ventilator. Its function is to warm and humidify the gas, so that the gas entering the patient's body is warm and humid, increasing the ventilating tidal volume and reducing the stimulation of the respiratory mucosa by the cold and dry gas.

Currently, humidification devices for ventilators on the market generally include a base and a liquid container, and generally heat the water in the liquid container by means of heat conduction. Among them, some humidification device heaters (for example, electric heating wires) are disposed in the base, and heat is transferred to the bottom of the liquid container through the heat conducting plate to heat the water in the liquid container. However, the disadvantage of this heating method is that on the one hand, the efficiency of heat transfer is low, and on the other hand, the heat transfer efficiency is also related to the flatness and the degree of conformity of the heat conducting plate and the bottom of the liquid container, and the manufacturing process is required to be high.

In order to overcome the above drawbacks, some manufacturers integrate the heater at the bottom of the liquid container. While this solves the above problems, it is necessary to additionally provide a docking plug on the liquid container and the base to supply electric power to the heater in the liquid container through the base. Although this solution can improve the heat transfer efficiency to a certain extent, the additional butt plug will bring new risks. In addition to increasing the cost and the operation steps, the waterproof problem caused by the plug exposed and the risk it brings will far exceed The above heat loss brings trouble.

In addition, the heaters of the above two humidification devices are all heated by heat conduction. In addition to the problem of heat loss, there is a potential risk. When the liquid container is removed from the base, the bottom of the heat conducting plate or the liquid container is exposed. In the case of heat conduction, the surface temperature of the bottom of the heat transfer plate or the liquid container is relatively high, which may burn the patient, the operator or nearby personnel.

Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide a humidifying device for a ventilator and a ventilator including the same for solving the above problems, to at least partially solve the heating efficiency existing in the existing humidifying device for a ventilator Low, potential burn hazard caused by high temperature on the heater surface.

In order to achieve the above object, a first aspect of the present invention provides a humidification device for a ventilator, the humidification device comprising:

Base with power connector;

a liquid container capable of being placed on the base, the liquid container having an air inlet and an air outlet, the liquid container including a heat generating body made of a material containing iron;

A first electromagnetic induction heater is disposed in the base, the first electromagnetic induction heater includes a first electromagnetic induction coil, and both ends of the first electromagnetic induction coil are connected to the power connector.

Preferably, the liquid container includes a bottom cover, and at least a portion of the bottom cover is made of a ferrous material to form the heat generating body.

Preferably, the liquid container comprises a bottom cover, the bottom cover being made of a heat conductive material, the heat body being attached to an outer surface of the bottom cover.

A second aspect of the present invention provides another humidification device for a ventilator, the humidification device comprising:

Base with power connector;

a liquid container capable of being placed on the base, the liquid container having an air inlet and an air outlet;

a first electromagnetic induction heater disposed in the base, the first electromagnetic induction heater including a first electromagnetic induction coil, and two ends of the first electromagnetic induction coil are connected to the power connector;

a second electromagnetic induction heater disposed at a bottom of the liquid container, the second electromagnetic induction heater includes a second electromagnetic induction coil and a heater, and two ends of the second electromagnetic induction coil are connected to the heater .

Preferably, the bottom of the liquid container is provided with a container cavity, and the second electromagnetic induction coil is disposed in the container cavity.

Preferably, the heater is a heating plate, the heating plate covering the container cavity, the edge of the heating plate being sealingly connected to the side wall of the liquid container.

Preferably, the second electromagnetic induction heater further includes a second core, the second core is made of a magnetically permeable material, and the second electromagnetic induction coil is wound on the second core.

Preferably, the second electromagnetic induction coil is disposed opposite to the first electromagnetic induction coil.

Preferably, the liquid container comprises a bottom cover, the bottom cover is made of a heat conductive material, and the second electromagnetic induction heater is connected from the outside of the liquid container to the bottom cover, wherein the heater is fitted To the outer surface of the bottom cover.

Preferably, a base cavity is provided in the base near the upper surface of the base, and the first electromagnetic induction heater is disposed in the base cavity.

Preferably, the first electromagnetic induction heater includes a first core, the first core is made of a magnetically permeable material, and the first electromagnetic induction coil is wound on the first core.

Preferably, the humidifying device further comprises an interconnected rectifier circuit and a control circuit disposed in the base, the rectifier circuit for rectifying an alternating voltage provided by a power source into a direct current voltage, and the control circuit is configured to The DC voltage is converted to a high frequency DC voltage having a predetermined frequency.

A third aspect of the present invention provides a ventilator including a main body for supplying an airflow and any of the humidifying devices as described above, wherein the air inlet of the humidifying device and the host Connected to introduce the gas stream into the humidification device.

The humidification device and the ventilator provided by the present invention use an electromagnetic induction heater to heat the liquid in the liquid container, completely abandoning the heat conduction type with high heat loss. The electromagnetic induction heater has a high thermal conversion rate (the thermal conversion rate can reach 95%), which can save energy and protect the environment and save costs. The humidification device of the present invention eliminates the need for additional connectors (e.g., mating plugs) on the liquid container and the base, thereby effectively avoiding the potential risks associated with the exposed connectors. In addition, the traditional contact heat conduction has a large heating inertia, so that the temperature of the heating end is much higher than the temperature of the heat conducting end, thereby increasing the energy consumption and the risk of burns, and the electromagnetic induction heater used in the invention has less heat generating and heat transfer parts. The traditional heat conduction heating method is small, so the thermal inertia is small. The electromagnetic induction coil of the electromagnetic induction heater of the invention can be kept cool, that is, the surface of the working environment is normal temperature, the human body can be touched, the risk of burns due to exposure of the high temperature area is avoided, and the life of the product can be effectively extended. In addition, since the regions in the alternating magnetic field belong to the heating zone, it is possible to achieve heating without a dead angle and uniformly heat the object to be heated.

A series of simplified forms of concepts are introduced in the present invention, which will be described in further detail in the Detailed Description section. The summary is not intended to limit the key features and essential technical features of the claimed invention, and is not intended to limit the scope of protection of the claimed embodiments.

Advantages and features of the present invention are described in detail below with reference to the accompanying drawings.

DRAWINGS

The following drawings of the invention are hereby incorporated by reference in their entirety in their entirety. The embodiments of the invention and the description thereof are shown in the drawings In the drawing:

1 is a perspective view of a humidification device according to an embodiment of the present invention;

2 is a cross-sectional view of a humidification device in accordance with one embodiment of the present invention;

Figure 3 is an exploded cross-sectional view of the humidification device of Figure 2;

4 is a cross-sectional view of a humidification device according to another embodiment of the present invention; and FIG. 5 is an exploded cross-sectional view of the humidification device of FIG. 4.

detailed description

In the following description, numerous details are provided in order to provide a thorough understanding of the invention. However, those skilled in the art can understand that the following description is merely illustrative of a preferred embodiment of the invention, and the invention may be practiced without one or more such details. Moreover, in order to avoid confusion with the present invention, some of the technical features well known in the art are not described in detail.

According to an aspect of the invention, the invention provides a humidification device. The humidification device is primarily used on a ventilator. The ventilator typically includes a main unit and a humidification device coupled to the main body via a gas line. A fan is arranged in the main body, and the gas pipeline can introduce a certain pressure of gas generated by the fan from the host into the humidification device. The heating means in the humidification device can heat and evaporate the liquid in the liquid container, so that the gas blown from the humidification device has a suitable temperature and humidity. The humidified gas is connected to the respiratory mask through a flexible conduit for patient treatment. Among them, the gas blown by the host may be oxygen, air or other therapeutic gas.

Figures 1-3 illustrate a humidification device 100 in accordance with an embodiment of the present invention. As shown in FIGS. 1-3, the humidification apparatus 100 includes a base 110, a liquid container 120, and a first electromagnetic induction heater 131.

The base 110 is used to support the liquid container 120. Typically, the base 110 has a power connector for powering the first electromagnetic induction heater 131. The power source can be a commercial power source, such as 220V, 50Hz/60Hz commercial power. The power connector can be an electrical plug. Alternatively, other electrical components may be provided in the base 110, including the rectifier circuit and the control circuit which will be mentioned later. It should be noted that some electrical components may also be provided separately or in the liquid container 120. However, the separate arrangement of the electrical components increases the number of components, and the waterproofing problem needs to be considered in the liquid container 120. Therefore, preferably, these electrical components may be disposed in the base 110 or connected to the base 110.

The liquid container 120 can be placed on the base 110. The liquid container 120 has an air inlet 121 and an air outlet 122. The main unit is connected to the air inlet 121. The gas supplied from the main unit enters the humidification device from the air inlet 121, is humidified and warmed, and is blown out from the air outlet 122 to provide a patient interface (for example, a breathing mask). The liquid container 120 is used to store a liquid, such as water. If necessary, other substances such as therapeutic drugs and the like may be included in the liquid. The liquid container 120 is preferably detachably placed on the base 110 so that after the liquid in the liquid container 120 is used, only the liquid container 120 can be moved to the liquid source to refill the liquid container 120. As mentioned above, the base 110 generally includes electrical components. Moving only the liquid container 120 to the source of the liquid can prevent the electrical components from getting wet, so that it is not necessary to consider the waterproofing of the base.

The first electromagnetic induction heater 131 is disposed in the base 110. In the embodiment shown in FIG. 2 and FIG. 3, the liquid container 120 includes a heat generating body made of a material containing iron, wherein the iron-containing material may be a compound of elemental iron or iron, and the like, and is not particularly limited herein. In a preferred embodiment, the bottom cover 123 of the liquid container 120 is at least partially made of a ferrous element material to form a heat generating body. That is, the portion of the bottom cover 123 made of the iron-containing material is the heat generating body. The heat generation principle of the heating element will be described in detail later. Alternatively, a portion of the bottom cover 123 of the liquid container 120 is made of a ferrous element material. Preferably, the bottom cover 123 of the liquid container 120 is entirely made of a ferrous element material to increase the area of the heat generating body and improve the heat conversion efficiency. In other embodiments, the heat generating body made of an iron-containing material may be additionally connected (for example, pasted, welded, etc.) to the bottom cover 123. The heating element may be connected to the bottom cover 123 inside the liquid container 120. In this case, the heating element directly contacts the liquid in the liquid container 120 to conduct heat directly to the liquid. Alternatively, the heat generating body may be disposed outside the liquid container 120. In order to conduct heat to the liquid in the liquid container 120, the bottom cover 123 of the liquid container 120 is made of a heat conductive material, and the heat generating body is attached to the outer surface of the bottom cover 123.

The first electromagnetic induction heater 131 is actually a heating device that generates heat by heating the object itself by switching between electric, magnetic, and thermal energy. The heat generating body made of the iron-containing material is the object to be heated. The first electromagnetic induction heater 131 generally includes a first electromagnetic induction coil 131a. The principle of heating by the first electromagnetic induction heater 131 mainly includes two stages of electromagnetism and magnetocalogenesis. The process of electromagnetism occurs at the end of the first electromagnetic induction heater 131, and the process of magnetic heat generation occurs at the end of the heating body. The electromagnetism refers to a voltage that causes a high-frequency change to the first electromagnetic induction coil 131a, and a rapidly changing high-voltage current generates a magnetic field that changes at a high speed around it. The surface of the heating element made of the iron-containing material cuts alternating magnetic lines of force to generate alternating current (ie, eddy current) inside the heating element, and the eddy current causes high-speed irregular movement of metal atoms (usually iron atoms) in the heating element. The atoms collide with each other and rub to generate heat energy, which is the process of magnetothermal heat. The generated thermal energy can heat the liquid within the liquid container 120. Preferably, both the side walls and the top cover of the liquid container 120 may be made entirely or partially of a transparent or translucent material (e.g., glass, plastic, etc.) to facilitate viewing of the liquid level within the liquid container 120.

The humidification device and the ventilator provided by the present invention use the first electromagnetic induction heater to heat the liquid in the liquid container, completely abandoning the heat conduction heating form with high heat loss. The first electromagnetic induction heater has a high thermal conversion rate (the thermal conversion rate can reach 95%), which can save energy and protect the environment and save costs. The humidification device of the present invention eliminates the need for additional connectors (e.g., mating plugs) on the liquid container and the base, thereby effectively avoiding the potential risks associated with the exposed connectors. In addition, the traditional contact heat conduction has a large heating inertia, so that the temperature of the heating end is much higher than the temperature of the heat conducting end, thereby increasing the energy consumption and the risk of burns, and the electromagnetic induction heating method adopted by the present invention has less heat generating and heat transfer parts. The traditional heat conduction heating method is small, so the thermal inertia is small. The first electromagnetic induction heater 131 of the invention can be kept cool, that is, the surface of the working environment is normal temperature, the human body can be touched, the risk of burns due to exposure of the high temperature area is avoided, and the life of the product can be effectively extended. In addition, since the regions in the alternating magnetic field belong to the heating zone, it is possible to achieve heating without a dead angle and to uniformly heat the object to be heated.

Referring to FIGS. 2 and 3, in the base 110, a base cavity 112 is disposed adjacent the upper surface of the base 110. The first electromagnetic induction heater 131 is disposed in the base cavity 112. Alternatively, the base cavity 112 may be open, such as having an opening on the upper surface of the base 110. Alternatively, the base cavity 112 may also be closed, as shown in FIG. The advantage of the closed base cavity 112 is that the appearance of the base 110 can be made neat and the first electromagnetic induction heater 131 is not exposed, so that it is not necessary to consider the waterproof problem. According to the distribution law of the magnetic lines around the first electromagnetic induction heater 131, the first electromagnetic induction heater 131 is disposed close to the liquid container 120 to have a higher thermal conversion efficiency. In addition, since the first electromagnetic induction heater 131 is disposed in the base 110, it is not necessary to provide any energizing structure on the liquid container 120, so that it is not necessary to provide an exposed butt plug on the liquid container 120 and the base 110, so that it is not necessary to consider the liquid. The waterproofing of the container 120 simplifies the design.

In order to enhance the intensity of the magnetic field generated by the first electromagnetic induction coil 131a and improve the electromagnetic conversion efficiency of the first electromagnetic induction heater 131, preferably, the first electromagnetic induction heater 131 further includes a first core 131b, as shown in FIG. . The first core 131b may have a strip shape as shown in FIG. 3, and may also have a circular rod shape. The first core 131b is mainly made of a magnetic conductive material. The magnetic conductive material includes one or more of the following materials: pure iron, low carbon steel, iron silicon alloy, iron aluminum alloy, iron silicon aluminum alloy, nickel iron alloy, iron cobalt Alloys, ferrites, etc. Preferably, the first core 131b is made of ferrite. The first electromagnetic induction coil 131a is wound around the first core 131b. The first electromagnetic induction coil 131a is connected to a power connector of the base 110. The first electromagnetic induction coil 131a can design the winding number according to the required heating efficiency. Further, one or more first electromagnetic induction heaters 131 may be disposed in the base 110 in accordance with a desired heating efficiency. When a plurality of first electromagnetic induction heaters 131 are provided, they may be disposed in the base 110 close to the upper surface of the base 110 and arranged in parallel.

The present invention provides another embodiment. As shown in Figs. 4 and 5, the humidifying device 100' includes a second electromagnetic induction heater 132 for replacing the above-described heat generating body. In this embodiment, the second electromagnetic induction heater 132 transmits heat to the liquid in the liquid container 120 as a heat source to heat the liquid. Except for this, the humidifying device 100' shown in Figs. 4 and 5 is substantially the same as the humidifying device 100 shown in Figs. 2 and 3. Therefore, in FIGS. 4 and 5, the same or similar components as those in the foregoing embodiment are denoted by the same reference numerals as the foregoing embodiments, and will not be described in further detail for the sake of brevity. Only the differences will be specifically described below.

As shown in Figures 4 and 5, a second electromagnetic induction heater 132 is disposed at the bottom of the liquid container 120'. The second electromagnetic induction heater 132 includes a second electromagnetic induction coil 132a and a heater 132c. Both ends of the second electromagnetic induction coil 132a are connected to the heater 132c. In this embodiment, the second electromagnetic induction heater 132 may not be connected to a power source. When the first electromagnetic induction heater 131 in the base 110 is energized, the second electromagnetic induction heater 132 is located in the alternating magnetic field generated by the first electromagnetic induction heater 131, thereby generating a feeling at both ends of the second electromagnetic induction coil 132a. Electromotive force. The induced electromotive force can generate a current such that the heater 132c electrically connected to the second electromagnetic induction coil 132a generates thermal energy, thereby heating the liquid in the liquid container 120'. The second electromagnetic induction coil 132a can design the winding number according to the required heating efficiency. Further, depending on the desired heating efficiency, a plurality of second electromagnetic induction coils 132a may be disposed in the liquid container 120', and the plurality of second electromagnetic induction coils 132a are electrically connected to the heater 132c. When a plurality of second electromagnetic induction coils 132a are provided, they may be disposed in the liquid container 120' near the bottom thereof and in parallel. The heater 132c may be a heating plate or a heating resistor wire.

In the embodiment shown in Figure 5, the bottom of the liquid container 120' is provided with a container cavity 124. The second electromagnetic induction coil 132a may be disposed in the container cavity 124. In view of the high water resistance requirements for the liquid container 120', it is preferred that the container cavity 124 be closed. The container cavity 124 may be disposed inside the liquid container 120' to ensure that the appearance of the liquid container 120' is flat and clean. When the heater 132c is a heating plate, the heater 132c may cover the container cavity 124. As shown in FIG. 4, the edge of the heater 132c is sealingly connected to the side wall of the liquid container 120' to make the liquid container 120' The internal liquid holding chamber (the part for holding the liquid) has a smooth surface for daily cleaning and maintenance. Of course, the heater 132c can also be disposed on the bottom cover of the liquid container 120' around the container cavity 124. Alternatively, when the heater 132c is a heating plate, the heating plate may be sealingly connected to the side wall of the liquid container 120' to close the space between the heating plate and the bottom cover of the liquid container 120' to form the container. Cavity 124.

In other embodiments not shown, the second electromagnetic induction heater 132 may also be disposed outside of the liquid container 120'. In order to conduct heat to the liquid in the liquid container 120', the bottom cover of the liquid container 120' is made of a heat conductive material, wherein the heater 132c of the second electromagnetic induction heater 132 is attached to the outer surface of the bottom cover, such that The heat generated by the heater 132c can be transferred to the liquid through the bottom cover.

In addition, by reasonably arranging the positional relationship between the first electromagnetic induction heater 131 and the second electromagnetic induction heater 132, the induced magnetic forces generated by the two can be attracted to each other, and then the liquid container 120' is locked on the base 110 after being energized. After the power is turned off, the magnetic force disappears and is automatically unlocked. The magnetic locking solves the cumbersome mechanism that needs to be locked in the conventional humidification device, and the generated magnetic force functions as an automatic correction, which does not need to be deliberately installed, is convenient to operate, and is more humanized. Preferably, the second electromagnetic induction coil 132a is disposed opposite to the first electromagnetic induction coil 131a, as shown in FIGS. 4 and 5. Thus, the magnetic force generated when the second electromagnetic induction coil 132a is energized can be attracted to the magnetic force generated by the induced current in the first electromagnetic induction coil 131a, thereby realizing the automatic lock-unlock function of the liquid container 120' and the base 110.

Preferably, the second electromagnetic induction heater 132 may further include a second core 132b to enhance the strength of the magnetic field generated by the second electromagnetic induction coil 132a and improve the electromagnetic conversion efficiency of the second electromagnetic induction heater 132. The second core 132b is mainly made of a magnetically permeable material. The magnetic conductive material includes one or more of the following materials: pure iron, low carbon steel, iron silicon alloy, iron aluminum alloy, iron silicon aluminum alloy, nickel iron alloy, iron cobalt Alloys, ferrites, etc. Preferably, the second core 132b is made of ferrite. The first core 131b and the second core 132b may be made of the same or different magnetically permeable materials. The second electromagnetic induction coil 132a is wound around the second core 132b. The second core 132b may have a strip shape as shown in FIG. 5, and may also have a circular rod shape.

Further, the humidification devices 100 and 100' may further include a rectifying circuit and a control circuit connected to each other. The rectifier circuit is configured to rectify an alternating voltage provided by a power source into a direct current voltage. As an example, the rectifier circuit can convert an alternating current of, for example, 50 Hz/60 Hz into a direct current voltage. The control circuit is operative to convert the DC voltage to a high frequency DC voltage having a predetermined frequency. As an example, the predetermined frequency may be 20-40 KHz. For the rectifier circuit and the control circuit, various conventional circuits known in the art can be employed. The rectifier circuit and the control circuit can be integrated on the circuit board. As mentioned above, preferably, the rectifier circuit and the control circuit can be disposed in the base 110.

In still another embodiment of the present invention, the above two embodiments may be combined, that is, at least a part of the bottom of the liquid container is made of a magnetic conductive material, and a second electromagnetic induction heater is disposed at the bottom of the liquid container. To improve heating efficiency.

According to another aspect of the invention, the invention also provides a ventilator. The ventilator includes a host for blowing air and any of the humidifying devices described above. The air inlet of the humidification device is in communication with the main unit to introduce the gas into the humidification device. For the various components and hosts included in the humidification device, reference may be made to the description of the corresponding parts above, and details are not described herein again.

The present invention has been described by the above-described embodiments, but it should be understood that the above-described embodiments are only for the purpose of illustration and description. Further, those skilled in the art can understand that the present invention is not limited to the above embodiments, and various modifications and changes can be made according to the teachings of the present invention. These modifications and modifications are all claimed in the present invention. Within the scope. The scope of the invention is defined by the appended claims and their equivalents.

Claims

A humidification device for a ventilator, characterized in that the humidification device comprises:

Base with power connector;

a liquid container capable of being placed on the base, the liquid container having an air inlet and an air outlet, the liquid container including a heat generating body made of a material containing iron;

A first electromagnetic induction heater is disposed in the base, the first electromagnetic induction heater includes a first electromagnetic induction coil, and both ends of the first electromagnetic induction coil are connected to the power connector.
A humidifying apparatus according to claim 1, wherein said liquid container comprises a bottom cover, and at least a part of said bottom cover is made of a ferrous material to form said heat generating body.
The humidifying apparatus according to claim 1, wherein said liquid container comprises a bottom cover, said bottom cover being made of a heat conductive material, said heat generating body being attached to an outer surface of said bottom cover.
A humidification device for a ventilator, characterized in that the humidification device comprises:

Base with power connector;

a liquid container capable of being placed on the base, the liquid container having an air inlet and an air outlet;

a first electromagnetic induction heater disposed in the base, the first electromagnetic induction heater including a first electromagnetic induction coil, and two ends of the first electromagnetic induction coil are connected to the power connector;

a second electromagnetic induction heater disposed at a bottom of the liquid container, the second electromagnetic induction heater includes a second electromagnetic induction coil and a heater, and two ends of the second electromagnetic induction coil are connected to the heater .
The humidification apparatus according to claim 4, wherein a bottom of the liquid container is provided with a container cavity, and the second electromagnetic induction coil is disposed in the container cavity.
A humidification apparatus according to claim 5, wherein said heater is a heating plate, said heating plate is overlaid on said container cavity, and an edge of said heating plate is sealingly connected to said liquid container Side wall.
The humidification apparatus according to claim 4, wherein said second electromagnetic induction heater further comprises a second core, said second core being made of a magnetically permeable material, said second electromagnetic induction coil Winding on the second core.
The humidification apparatus according to claim 4, wherein said second electromagnetic induction coil is disposed opposite said first electromagnetic induction coil.
A humidifying apparatus according to claim 4, wherein said liquid container comprises a bottom cover, said bottom cover is made of a heat conductive material, and said second electromagnetic induction heater is connected from the outside of said liquid container to The bottom cover, wherein the heater is attached to an outer surface of the bottom cover.
The humidification apparatus according to any one of claims 1 to 9, wherein a base cavity is provided in an upper surface of the base near the base, and the first electromagnetic induction heater is disposed at In the base cavity.
A humidification apparatus according to any one of claims 1 to 9, wherein said first electromagnetic induction heater comprises a first core, said first core being made of a magnetically permeable material, said A first electromagnetic induction coil is wound on the first core.
The humidifying apparatus according to any one of claims 1 to 9, wherein the humidifying apparatus further comprises an interconnecting rectifier circuit and a control circuit provided in the base, the rectifier circuit being used for The AC voltage supplied from the power source is rectified to a DC voltage, and the control circuit is configured to convert the DC voltage into a high frequency DC voltage having a predetermined frequency.
A ventilator, characterized in that the ventilator comprises a main body for providing an air flow and the humidifying device according to any one of claims 1 to 12, wherein the air inlet of the humidifying device The host is in communication to direct the gas stream into the humidification device.