A mask with controllable humidity and a method for controlling the humidity of the mask

Abstract

In the field of masks, the present invention provides a humidity-controllable mask, comprising a mask body comprising an outer hydrophilic conductive layer, an outer insulating protective layer, a hydrophobic conductive layer, an inner insulating protective layer, and an inner hydrophilic conductive layer, which are sequentially laminated. The inner hydrophilic conductive layer is skin-friendly, and a humidity sensor is mounted on the inner wall of the inner hydrophilic conductive layer. An external low-voltage power supply and an internal low-voltage power supply are mounted on the mask body. The positive electrode of the external low-voltage power supply is connected to the outer hydrophilic conductive layer, and the negative electrode of the external low-voltage power supply is connected to the hydrophobic conductive layer. The positive electrode of the internal low-voltage power supply is connected to the inner hydrophilic conductive layer, and the negative electrode of the internal low-voltage power supply is connected to the hydrophobic conductive layer. The humidity sensors are electrically connected to the external low-voltage power supply and the internal low-voltage power supply, respectively. The mask can actively and directionally transfer inhaled or exhaled moisture to the inside or outside of the mask, ensuring a constant humidity environment inside the mask.

Description

Technical Field

[0001] The present invention relates to the field of masks, and in particular to a humidity-controllable mask and a method for controlling the humidity of the mask. Background Art

[0002] Medical surgical masks primarily consist of a skin-friendly inner layer, a middle filter layer, and an outer hydrophobic layer, effectively shielding against dust, sand, viruses, toxic and harmful gases, and odors. Wearing a mask effectively prevents the spread of harmful particles, small viral molecules, and other substances, avoiding most conditions that induce allergic dermatitis, asthma, and most respiratory diseases. Masks have become an essential weapon in our daily defense against disease.

[0003] However, wearing a mask can hinder breathing, trapping both exhaled and inhaled moisture, leading to uncontrolled humidity levels inside the mask. When humidity is too high, water droplets form inside the mask, which, combined with the ideal internal temperature, can lead to bacterial growth inside the mask, damaging the skin's protective barrier and causing oily skin, acne, and allergies. When humidity is too low, dry mouth and nosebleeds can occur, potentially leading to skin aging symptoms such as decreased elasticity and wrinkles.

[0004] Current solutions to the problem of internal mask moisture include inserting a layer of absorbent gauze or replacing the mask promptly. These methods are only half-measures, inconvenient, and fail to fundamentally address the issue. Some masks use a one-way valve to facilitate the release of exhaled moisture. The valve opens during exhalation, allowing the exhaled air to carry water vapor, and closes during inhalation to prevent the inhalation of small particles and viruses. However, the one-way valve is too small to completely expel all exhaled moisture. Some moisture can still condense inside the mask or adhere to the skin, causing wearer repellency and some skin erosion. Furthermore, the one-way valve does not filter exhaled air, making it easy for pathogens to spread into the air and infect nearby people.

[0005] To address the dryness inside the mask, two moisturizing sheets can be inserted into the middle of the mask, near the nose. This creates a "moist" feeling while wearing the mask, effectively solving the dryness problem. However, the moisturizing effect of this method will gradually weaken over time, and the true moisturizing effect will not last more than half a day. In addition, because moisturizing masks do not contain a filter layer, they cannot replace the protective effect of ordinary medical surgical masks. Summary of the Invention

[0006] To solve the above problems, the present invention provides a humidity-controllable mask and a method for controlling the humidity of the mask, which intelligently regulates the humidity inside the mask and improves the wearing comfort of the mask, specifically including:

[0007] A humidity-controllable mask comprises a mask body and ear loops, wherein the mask body comprises an outer hydrophilic conductive layer, an outer insulating protective layer, a hydrophobic conductive layer, an inner insulating protective layer and an inner hydrophilic conductive layer which are sequentially laminated.

[0008] Wherein, the inner hydrophilic conductive layer is skin-friendly, and a humidity sensor is installed on the inner wall of the inner hydrophilic conductive layer;

[0009] and, an external low-voltage power supply and an internal low-voltage power supply mounted on the cover;

[0010] The positive electrode of the external low-voltage power supply is connected to the outer hydrophilic conductive layer, and the negative electrode of the external low-voltage power supply is connected to the hydrophobic conductive layer;

[0011] The positive electrode of the internal low-voltage power supply is connected to the inner hydrophilic conductive layer, and the negative electrode of the internal low-voltage power supply is connected to the hydrophobic conductive layer;

[0012] The humidity sensor is electrically connected to the external low-voltage power supply and the internal low-voltage power supply respectively.

[0013] Preferably, the voltage of the external low-voltage power supply is 1V, and the voltage of the internal low-voltage power supply is 1V.

[0014] Preferably, the base material of the inner hydrophilic conductive layer is cotton, gauze or wool;

[0015] A conductive material is provided on the surface of the substrate of the inner hydrophilic conductive layer, and the thickness of the substrate of the inner hydrophilic conductive layer is between 10 μm and 500 μm;

[0016] The base material of the outer hydrophilic conductive layer is cotton cloth, gauze or wool;

[0017] A conductive material is disposed on the surface of the substrate of the outer hydrophilic conductive layer, and the thickness of the substrate of the outer hydrophilic conductive layer is between 10 μm and 500 μm.

[0018] Preferably, the material of the inner insulating protective layer is polylactic acid nanofiber cloth or polyvinylidene fluoride nanofiber cloth, the gap of the inner insulating protective layer is between 10nm and 100nm, and the thickness of the inner insulating protective layer is between 10μm and 200μm;

[0019] The outer insulating protective layer is made of polylactic acid nanofiber cloth or polyvinylidene fluoride nanofiber cloth, the gap of the outer insulating protective layer is between 10nm and 100nm, and the thickness of the outer insulating protective layer is between 10μm and 200μm.

[0020] Preferably, the base material of the hydrophobic conductive layer is cotton cloth, woven cloth or wool;

[0021] A layer of noble metal with a thickness of 1 μm is respectively sputtered on both sides of the substrate of the hydrophobic conductive layer by a magnetron sputtering method.

[0022] Preferably, the outer hydrophilic conductive layer, the outer insulating protective layer, the hydrophobic conductive layer, the inner insulating protective layer and the inner hydrophilic conductive layer are bonded into the cover body by a thermal polymerization assembly method of polyethylene-polyvinyl acetate copolymer, polyamide, polyester and polyurethane film.

[0023] A method for controlling the humidity of a mask, applied to the humidity-controllable mask according to any one of claims 1 to 6, comprising the following steps:

[0024] Turn on the humidity sensor switch;

[0025] When the humidity sensor detects that the humidity inside the cover is lower than a minimum threshold, the external low-voltage power supply is activated, and the moisture in the outer hydrophilic conductive layer is transported to the hydrophobic conductive layer through electroosmosis. The hydrophobic conductive layer then transports the received moisture to the inner hydrophilic conductive layer until the humidity sensor detects that the humidity inside the cover is higher than the minimum threshold, at which point the external low-voltage power supply stops operating.

[0026] When the humidity sensor detects that the humidity inside the cover is higher than the maximum threshold, the internal low-voltage power supply starts working, the inner hydrophilic conductive layer transports the moisture inside the cover to the hydrophobic conductive layer through electro-osmosis, and the hydrophobic conductive layer transports the received moisture to the outer hydrophilic conductive layer until the humidity sensor detects that the humidity inside the cover is lower than the maximum threshold, and the internal low-voltage power supply stops working.

[0027] Preferably, the external low-voltage power supply and the internal low-voltage power supply are integrated into a total power supply.

[0028] Preferably, it is characterized in that the batteries of the external low-voltage power supply and the internal low-voltage power supply are button batteries.

[0029] Preferably, the humidity sensor is attached to the inner wall of the inner hydrophilic conductive layer.

[0030] Compared with the prior art, the above technical solution has at least the following beneficial effects:

[0031] According to the above scheme, the mask can actively and directionally transfer the inhaled or discharged moisture to the inside or outside of the mask, ensuring a constant humidity environment inside the mask, reducing the damage to the skin and respiratory tract of the mask wearer caused by excessive dryness or moisture, improving the comfort of wearing the mask, enhancing the awareness of wearing the mask, and reducing the risk of transmission of infectious diseases. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 A schematic diagram of a cover provided in an embodiment of the present application;

[0034] Reference numerals:

[0035] 1. Outer hydrophilic conductive layer, 2. Outer insulating protective layer, 3. Hydrophobic conductive layer, 4. Inner insulating protective layer, 5. Inner hydrophilic conductive layer, 6. Internal low-voltage power supply, 7. External low-voltage power supply, 8. Internal humidity sensor. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Unless otherwise defined, the technical or scientific terms used in the present invention shall have the usual meaning understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. Words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0038] It should be noted that the terms "up", "down", "left", "right", "front" and "back" used in the present invention are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0039] The present invention solves the problem that the humidity inside the mask cannot be controlled and regulated, and provides a humidity-controllable mask. It uses the difference in voltage and wettability gradient to directionally transmit and transfer moisture inside or outside the mask, so that the inside of the mask reaches the ideal humidity, reducing the damage to the skin caused by moisture or dryness inside the mask, improving the safety and comfort of wearing the mask, and applying the hydrophilic-protective-hydrophobic-protective-hydrophilic structure and low-voltage electro-osmosis to the traditional medical mask system to achieve controllable transport and transfer of moisture to the inside of the mask. This patent is not limited to the specific preparation method of a certain layer. As long as it meets the current layer requirements, any hydrophilic conductive material can be used as the outermost and innermost layer materials. It pays more attention to the conceptual design of the overall multi-layer structure and the introduction of the concept of low-pressure penetration and unidirectional liquid transport into the field of masks, specifically including:

[0040] A humidity-controllable mask comprises a mask body and ear loops, wherein the mask body comprises an outer hydrophilic conductive layer, an outer insulating protective layer, a hydrophobic conductive layer, an inner insulating protective layer and an inner hydrophilic conductive layer which are sequentially arranged; wherein the inner hydrophilic conductive layer is skin-friendly, and a humidity sensor is installed on the inner wall of the inner hydrophilic conductive layer; and an external low-voltage power supply and an internal low-voltage power supply are installed on the mask body; the positive pole of the external low-voltage power supply is connected to the outer hydrophilic conductive layer, and the negative pole of the external low-voltage power supply is connected to the hydrophobic conductive layer; the positive pole of the internal low-voltage power supply is connected to the inner hydrophilic conductive layer, and the negative pole of the internal low-voltage power supply is connected to the hydrophobic conductive layer; and the humidity sensor is electrically connected to the external low-voltage power supply and the internal low-voltage power supply, respectively.

[0041] In a specific embodiment, the mask primarily comprises an outer hydrophilic conductive layer, an outer insulating protective layer, a hydrophobic conductive layer, an inner insulating protective layer, and an inner hydrophilic conductive layer. The outer hydrophilic conductive layer, the outer insulating protective layer, the hydrophobic conductive layer, the inner insulating protective layer, and the inner hydrophilic conductive layer are sequentially arranged from the outermost layer to the innermost layer of the mask body. The inner hydrophilic conductive layer adheres to human skin, the outer hydrophilic conductive layer is the outermost layer, and the humidity sensor is attached to the inner wall of the inner hydrophilic conductive layer.

[0042] Because of the principle of unidirectional transport of wettable water, water can only be automatically transferred from the hydrophobic side to the hydrophilic side in one direction, and cannot be transferred from the hydrophilic side to the hydrophobic side. Traditional masks all have a hydrophilic layer inside and a hydrophobic layer outside. Therefore, most of the exhaled moisture condenses into water droplets and remains inside the mask. The present invention can effectively control the humidity inside the mask by adjusting the multi-layer hydrophilic-hydrophobic-hydrophilic structure and applying an external low voltage (1V). The hydrophobic layer is the negative electrode and the hydrophilic layer is the positive electrode. After applying voltage, the water can be directional transferred from the hydrophilic side to the hydrophobic side, realizing controllable regulation of water. For the mask of the present application, the outer hydrophilic conductive layer, the outer insulating protective layer, the hydrophobic conductive layer, the external low-voltage power supply, and the humidity sensor form a humidification unit. The humidity sensor detects that the humidity inside the mask is too low. The external low-voltage power supply works and uses electroosmosis to transport the water in the outer hydrophilic conductive layer to the hydrophobic conductive layer. The water in the hydrophobic conductive layer is unidirectionally transported to the inside of the mask using the difference in wettability, increasing the humidity inside the mask. When the humidity reaches a certain level, the external power supply stops working. The dehumidification unit consists of a hydrophobic conductive layer, an inner insulating protective layer, an inner hydrophilic conductive layer, an internal low-voltage power supply, and a humidity sensor. When the humidity sensor detects excessive humidity inside the mask, the internal low-voltage power supply activates, transferring residual moisture from the inside to the hydrophobic conductive layer through electroosmosis. The moisture in the hydrophobic conductive layer is then transported unidirectionally to the outside of the mask using differential wettability, reducing the humidity inside the mask. When the humidity drops to a certain level, the internal power supply shuts off. Control of the internal and external power supplies allows for controllable regulation of the mask's internal humidity.

[0043] In a preferred embodiment, the voltage of the external low-voltage power supply is 1V, and the voltage of the internal low-voltage power supply is 1V.

[0044] In a preferred embodiment, the substrate of the inner hydrophilic conductive layer is cotton, gauze or wool; the surface of the substrate of the inner hydrophilic conductive layer is provided with a conductive material, and the thickness of the substrate of the inner hydrophilic conductive layer is between 10 μm and 500 μm; the substrate of the outer hydrophilic conductive layer is cotton, gauze or wool; the surface of the substrate of the outer hydrophilic conductive layer is provided with a conductive material, and the thickness of the substrate of the outer hydrophilic conductive layer is between 10 μm and 500 μm. In a specific embodiment, the outer hydrophilic conductive layer and the inner hydrophilic conductive layer can be made of the same or different materials, and the thickness of the base substrate is about 10 μm-500 μm. The substrate is generally selected from hydrophilic and skin-friendly materials such as cotton, gauze, and wool. Conductive materials such as graphene, carbon nanotubes, Mxene, polyaniline, and polypyrrole are integrated into the hydrophilic substrate by spraying, spin coating, melt blowing, etc., and oxygen plasma etching is used to ensure that the fabric is fully hydrophilic to prepare a conductive hydrophilic fabric.

[0045] In a preferred embodiment, the material of the inner insulating protective layer is polylactic acid nanofiber cloth or polyvinylidene fluoride nanofiber cloth, the gap of the inner insulating protective layer is between 10nm and 100nm, and the thickness of the inner insulating protective layer is between 10μm and 200μm; the material of the outer insulating protective layer is polylactic acid nanofiber cloth or polyvinylidene fluoride nanofiber cloth, the gap of the outer insulating protective layer is between 10nm and 100nm, and the thickness of the outer insulating protective layer is between 10μm and 200μm.

[0046] In a specific embodiment, the outer insulating protective layer and the inner insulating protective layer can be made of the same or different materials. The two insulating protective layers of the present application require water transport, so traditional electrostatic electret melt-blown materials cannot be selected. The two protective layers of the present application are mainly 10μm-200μm thick, and the materials are mainly insulating nanofiber materials with pores of 10nm-100nm prepared by template synthesis, self-assembly, microphase separation, electrospinning, etc., such as polylactic acid nanofiber layers, polyvinylidene fluoride nanofiber layers, etc., which isolate small particles such as viruses through physical isolation, play a protective role and isolate the positive and negative electrode hydrophilic and hydrophobic layers.

[0047] In a preferred embodiment, the substrate of the hydrophobic conductive layer is cotton cloth, woven cloth or wool; a layer of precious metal with a thickness of 1 μm is sputtered on both sides of the substrate of the hydrophobic conductive layer by magnetron sputtering.

[0048] In a specific implementation method, the hydrophobic conductive layer is mainly designed by the magnetron sputtering method. The thickness of the substrate is about 10μm-500μm. The substrate is generally selected from cotton, gauze, wool, etc., and a layer of precious metal (copper, silver, gold, etc.) with a thickness of about 1μm is sputtered on both sides of the substrate by magnetron sputtering. While playing a conductive role, the precious metal layer ensures that the substrate is hydrophobic.

[0049] In a preferred embodiment, the outer hydrophilic conductive layer, the outer insulating protective layer, the hydrophobic conductive layer, the inner insulating protective layer, and the inner hydrophilic conductive layer are bonded together to form the mask body by thermally assembling polyethylene-polyvinyl acetate copolymer, polyamide, polyester, and polyurethane films. The multilayer structure of the present application is mainly assembled together by thermally assembling polyethylene-polyvinyl acetate copolymer, polyamide, polyester, and polyurethane films to form the hydrophilic-protective-hydrophobic-protective-hydrophilic layers of the mask, thereby achieving intelligent humidity control.

[0050] This mask can actively and directionally transfer the inhaled or expelled moisture to the inside or outside of the mask, ensuring a constant humidity environment inside the mask, reducing the damage to the mask wearer's skin and respiratory tract caused by excessive dryness or moisture, improving the comfort of wearing the mask, enhancing the awareness of wearing the mask, and reducing the risk of spreading infectious diseases.

[0051] On the other hand, the present invention provides a method for controlling the humidity of a mask, which is applied to the humidity-controllable mask according to any one of claims 1 to 6, comprising the following steps:

[0052] Turn on the humidity sensor switch;

[0053] When the humidity sensor detects that the humidity inside the cover is lower than a minimum threshold, the external low-voltage power supply is activated, and the moisture in the outer hydrophilic conductive layer is transported to the hydrophobic conductive layer through electroosmosis. The hydrophobic conductive layer then transports the received moisture to the inner hydrophilic conductive layer until the humidity sensor detects that the humidity inside the cover is higher than the minimum threshold, at which point the external low-voltage power supply stops operating.

[0054] When the humidity sensor detects that the humidity inside the cover is higher than the maximum threshold, the internal low-voltage power supply starts working, the inner hydrophilic conductive layer transports the moisture inside the cover to the hydrophobic conductive layer through electro-osmosis, and the hydrophobic conductive layer transports the received moisture to the outer hydrophilic conductive layer until the humidity sensor detects that the humidity inside the cover is lower than the maximum threshold, and the internal low-voltage power supply stops working.

[0055] The specific principle includes: due to the principle of unidirectional transport of infiltrative moisture, moisture can only be automatically transferred from the hydrophobic side to the hydrophilic side in one direction, and cannot be transferred from the hydrophilic side to the hydrophobic side. Traditional masks all have a hydrophilic layer on the inside and a hydrophobic layer on the outside. Therefore, most of the exhaled moisture condenses into water droplets and remains inside the mask. The patent of the present invention can effectively control the humidity inside the mask by adjusting the multi-layer hydrophilic-hydrophobic-hydrophilic structure and applying an external low voltage (1V). The hydrophobic layer is the negative electrode and the hydrophilic layer is the positive electrode. After applying the voltage, the moisture can be directional transferred from the hydrophilic side to the hydrophobic side, achieving controllable moisture regulation. For the mask of the present application, the outer hydrophilic conductive layer, the outer insulating protective layer, the hydrophobic conductive layer, the external low-voltage power supply, and the humidity sensor constitute a humidification unit. When the humidity sensor detects that the humidity inside the mask is too low, the external low-voltage power supply is activated, and the moisture in the outer hydrophilic conductive layer is transported to the hydrophobic conductive layer by electroosmosis. The moisture in the hydrophobic conductive layer is transported to the inside of the mask in one direction by using the difference in wettability, increasing the humidity inside the mask. When the humidity reaches a certain level, the external power supply stops working. The dehumidification unit consists of a hydrophobic conductive layer, an inner insulating protective layer, an inner hydrophilic conductive layer, an internal low-voltage power supply, and a humidity sensor. When the humidity sensor detects excessive humidity inside the mask, the internal low-voltage power supply activates, transferring residual moisture from the inside to the hydrophobic conductive layer through electroosmosis. The moisture in the hydrophobic conductive layer is then transported unidirectionally to the outside of the mask using differential wettability, reducing the humidity inside the mask. When the humidity drops to a certain level, the internal power supply shuts off. Control of the internal and external power supplies allows for controllable regulation of the mask's internal humidity.

[0056] In a preferred embodiment, the external low-voltage power supply and the internal low-voltage power supply are integrated into a total power supply, and the batteries for the external low-voltage power supply and the internal low-voltage power supply are button batteries. The internal and external low-voltage power supplies are used to provide low-voltage electrical energy for water transport. The hydrophilic conductive layer is connected to the positive electrode of the power supply, and the hydrophobic conductive layer is connected to the negative electrode of the power supply. The two power supplies can be integrated into a single power supply, and a switch is used to control internal operation, external operation, or shutdown. The button batteries provide voltage, and the wires and power supply are integrated into the outermost layer of the mask to ensure aesthetics.

[0057] This method applies the hydrophilic-protective-hydrophobic-protective-hydrophilic structure and low-voltage electro-osmosis to the traditional medical mask system, achieving controllable transport and transfer of moisture to the inside of the mask. This patent is not limited to the specific preparation method of a certain layer. As long as it meets the requirements of the current layer, any hydrophilic conductive material can be used as the outermost and innermost layer materials. It focuses more on the conceptual design of the overall multi-layer structure and the introduction of the concept of low-pressure penetration and one-way liquid transport into the mask field. This method can actively and directionally transfer the inhaled or discharged moisture to the inside or outside of the mask, ensuring a constant humidity environment inside the mask, reducing the damage to the mask wearer's skin and respiratory tract caused by excessive dryness or humidity, improving the comfort of wearing the mask, enhancing the awareness of wearing the mask, and reducing the risk of infectious disease transmission.

[0058] There are a few points to note:

[0059] (1) The drawings of the embodiments of the present invention only relate to the structures related to the embodiments of the present invention. Other structures may refer to conventional designs.

[0060] (2) For the sake of clarity, the thickness of layers or regions in the drawings used to describe embodiments of the present invention are exaggerated or reduced, i.e., these drawings are not drawn to scale. It is understood that when an element such as a layer, film, region, or substrate 1401 is referred to as being "on" or "under" another element, the element may be "directly" on or "under" the other element or intervening elements may be present.

[0061] (3) In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to form new embodiments.

[0062] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. The protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A humidity-controlled mask, comprising a mask body and ear loops, characterized in that: The cover body comprises an outer hydrophilic conductive layer, an outer insulating protective layer, a hydrophobic conductive layer, an inner insulating protective layer and an inner hydrophilic conductive layer which are sequentially arranged; Wherein, the inner hydrophilic conductive layer is skin-friendly, and a humidity sensor is installed on the inner wall of the inner hydrophilic conductive layer; and, an external low-voltage power supply and an internal low-voltage power supply mounted on the cover; The positive electrode of the external low-voltage power supply is connected to the outer hydrophilic conductive layer, and the negative electrode of the external low-voltage power supply is connected to the hydrophobic conductive layer; The positive electrode of the internal low-voltage power supply is connected to the inner hydrophilic conductive layer, and the negative electrode of the internal low-voltage power supply is connected to the hydrophobic conductive layer; The humidity sensor is electrically connected to the external low-voltage power supply and the internal low-voltage power supply respectively.

2. The humidity-controlled mask according to claim 1, wherein: The voltage of the external low-voltage power supply is 1V, and the voltage of the internal low-voltage power supply is 1V.

3. The humidity-controlled mask according to claim 1, wherein: The base material of the inner hydrophilic conductive layer is cotton cloth or gauze; A conductive material is provided on the surface of the substrate of the inner hydrophilic conductive layer, and the thickness of the substrate of the inner hydrophilic conductive layer is between 10 μm and 500 μm; The substrate of the outer hydrophilic conductive layer is cotton or gauze; A conductive material is disposed on the surface of the substrate of the outer hydrophilic conductive layer, and the thickness of the substrate of the outer hydrophilic conductive layer is between 10 μm and 500 μm.

4. The humidity-controlled mask according to claim 1, wherein: The material of the inner insulating protective layer is polylactic acid nanofiber cloth or polyvinylidene fluoride nanofiber cloth, the gap of the inner insulating protective layer is between 10nm and 100nm, and the thickness of the inner insulating protective layer is between 10μm and 200μm; The outer insulating protective layer is made of polylactic acid nanofiber cloth or polyvinylidene fluoride nanofiber cloth, the gap of the outer insulating protective layer is between 10nm and 100nm, and the thickness of the outer insulating protective layer is between 10μm and 200μm.

5. The humidity-controlled mask according to claim 1, wherein: The base material of the hydrophobic conductive layer is cotton cloth; A layer of noble metal with a thickness of 1 μm is respectively sputtered on both sides of the substrate of the hydrophobic conductive layer by a magnetron sputtering method.

6. The humidity-controlled mask according to claim 5, characterized in that: The noble metal is copper, silver or gold.

7. A method for controlling the humidity of a mask, characterized in that: The humidity-controlled mask according to any one of claims 1 to 6 comprises the following steps: Turn on the humidity sensor switch; When the humidity sensor detects that the humidity inside the cover is lower than a minimum threshold, the external low-voltage power supply is activated, and the moisture in the outer hydrophilic conductive layer is transported to the hydrophobic conductive layer through electroosmosis. The hydrophobic conductive layer then transports the received moisture to the inner hydrophilic conductive layer until the humidity sensor detects that the humidity inside the cover is higher than the minimum threshold, at which point the external low-voltage power supply stops operating. When the humidity sensor detects that the humidity inside the cover is higher than the maximum threshold, the internal low-voltage power supply starts working, the inner hydrophilic conductive layer transports the moisture inside the cover to the hydrophobic conductive layer through electro-osmosis, and the hydrophobic conductive layer transports the received moisture to the outer hydrophilic conductive layer until the humidity sensor detects that the humidity inside the cover is lower than the maximum threshold, and the internal low-voltage power supply stops working.

8. The method for controlling humidity of a mask according to claim 7, wherein: The external low-voltage power supply and the internal low-voltage power supply are integrated into a total power supply.

9. The method for controlling humidity of a mask according to claim 7, wherein: The batteries of the external low-voltage power supply and the internal low-voltage power supply are button batteries.

10. The method for controlling humidity of a mask according to claim 7, wherein: The humidity sensor is attached to the inner wall of the inner hydrophilic conductive layer.

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