Heat exchanger for breathing

Abstract

The utility model belongs to the field of protective accessories, and provides a breathing heat exchanger which comprises a frame. The multi-layer metal net is formed by pressing a plurality of layers of metal nets and is mounted in the frame, and the net edge of the multi-layer metal net is completely wrapped by the frame; the porous waterproof sheet is arranged in the frame and is arranged on the multi-layer metal net; the absorbent paper is arranged in a groove below the frame; heat and moisture of humid and hot air exhaled by people during exhaling are stored through the breathing heat exchanger, cold air is heated during inspiration, the temperature and humidity of the inhaled cold air are changed, the problem of how to keep out the cold in the breathing process of people is solved, in the cold environment, people inhale warm and humid air, and the breathing effect of people is improved. The limitation of a cold environment on free actions of human beings is eliminated.

Description

Technical Field

[0001] The utility model belongs to the field of protective accessories, in particular to a heat exchanger for breathing. Background Art

[0002] There are many types of masks, which are generally used to filter dust, smoke, fog, microorganisms, etc. in the air. Masks can also be used to keep warm and isolate the face from cold air;

[0003] General warm masks are made of several layers of cotton cloth, some of which are also filled with cotton wool. This type of mask has good air permeability and can isolate larger dust. In terms of warmth, it can isolate the cheeks and chin from the cold air and play a role in keeping the face warm, but it has no significant effect on the cold air inhaled into the mouth and nose, and cannot protect the upper and lower respiratory tract in severe cold environments.

[0004] However, when people are in a cold environment, they mainly use clothes, shoes and hats to isolate the cold air to keep warm. The only part of our body that cannot be kept warm by isolation is our respiratory system. Using masks, scarves, and neck wraps to cover the face can only keep the face warm, but has little effect on the cold air inhaled into the mouth and nose, and cannot protect our respiratory system from the cold air.

[0005] To this end, it is necessary to design a respiratory heat exchanger that can change the temperature and humidity of the inhaled air and perform heat exchange on the cold air entering the respiratory tract. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a respiratory heat exchanger to solve the problems raised in the background technology.

[0007] A respiratory heat exchanger, comprising:

[0008] frame;

[0009] Multi-layer metal mesh, which is pressed from multiple layers of metal mesh and installed in a frame, with the edges of the mesh completely wrapped by the frame;

[0010] A porous waterproof sheet is installed in the frame and set on a multi-layer metal mesh;

[0011] Absorbent paper is placed in the groove below the frame.

[0012] Preferably, the material of the frame is one of thermoplastic elastomer TPE and silicone, a nose cover is provided at the upper end of the frame, a water collecting trough is provided at the lower end, and the frame as a whole is an integrated design.

[0013] Preferably, the multilayer metal mesh is pressed into an arc shape and is made of one of aluminum, copper, stainless steel, and graphene. The heat capacity of the multilayer metal mesh is between 5 J / °C and 100 J / °C, and the number of layers is set in the range of 2 to 50 layers.

[0014] Preferably, the porous waterproof sheet covers the area of ​​the multi-layer metal mesh where condensation water is likely to appear, and the material of the porous waterproof sheet is one of polyester film, polytetrafluoroethylene film, and plastic film, with a thickness of 0.01mm to 0.5mm, and the pore size setting standard is that the total area of ​​the holes is not less than 5% of the film area.

[0015] Preferably, the absorbent paper is arranged in the water collecting tank, and its material is a water-absorbing material selected from facial tissue and dehydrated cotton.

[0016] Preferably, it also includes a mask, which is arranged in a pocket shape and is used to place a heat exchanger for breathing. The mask is made of non-woven fabric or other cloth materials for cold-proof masks, and the number of layers is set to be more than two layers. A heat exchanger for breathing is placed in the middle, and hanging ropes are fixedly set on both sides. The mask is arranged in two forms: upper opening or lower opening.

[0017] Preferably, it also includes a pocket for placing a respiratory heat exchanger, and the pocket material is made of non-woven fabric or other cloth material for cold-proof masks and is arranged as a single layer.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The utility model forms a heat exchange mask by installing a heat exchanger for breathing into a mask and wearing it, or putting the heat exchanger for breathing into a single-layer pocket and then fixing it with a neck girdle, a scarf or other types of masks. The heat exchanger for breathing is located in front of the mouth and nose. When exhaling and inhaling, the airflow must pass through a multi-layer metal mesh with good air permeability. The multi-layer metal mesh is the heat exchange layer, which has a certain heat capacity and can store heat.

[0020] 2. The utility model stores the heat and moisture of the hot and humid air exhaled by a person when exhaling through a respiratory heat exchanger, heats the cold air when inhaling, changes the temperature and humidity of the inhaled cold air, solves the problem of how to keep warm during the human breathing process, and enables people to inhale warm and moist air in a cold environment, getting rid of the restrictions of the cold environment on human free movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front view of the structure of the respiratory heat exchanger of the utility model;

[0022] Figure 2 It is a side view of the structure of the respiratory heat exchanger of the utility model;

[0023] Figure 3 This is a rear view of the structure of the respiratory heat exchanger of the utility model;

[0024] Figure 4 It is a top view of the structure of the respiratory heat exchanger of the utility model;

[0025] Figure 5 This is an exploded view of the respiratory heat exchanger of the utility model;

[0026] Figure 6 This is a schematic diagram of the multi-layer metal mesh structure of the utility model;

[0027] Figure 7 This is a schematic diagram of the structure of the porous waterproof film of the utility model;

[0028] Figure 8 This is a schematic diagram of the structure of a mask of the utility model equipped with a heat exchanger for breathing;

[0029] Fig. 9 This is a schematic diagram of the pocket structure of the utility model;

[0030] Fig.10 This is a schematic diagram of the structure of a pocket equipped with a heat exchanger for breathing according to the utility model;

[0031] Fig.11 This is a table showing the changes in the air temperature and heat exchanger temperature in the mask during inhalation and exhalation when the ambient temperature is 3°C.

[0032] Fig.12 This is a table showing the changes in the air temperature and heat exchanger temperature in the mask during inhalation and exhalation when the ambient temperature is -15°C.

[0033] Fig.13 This is a table showing the changes in the air temperature and heat exchanger temperature in the mask during inhalation and exhalation when the ambient temperature is -15°C after the heat capacity of the utility model is increased;

[0034] Fig.14 This is a table showing the changes in the air temperature and the heat exchanger temperature in the mask during inhalation and exhalation when the ambient temperature of the utility model is a high temperature environment of 55°C.

[0035] In the figure:

[0036] 1. Frame; 101. Nose cover; 102. Water collection tank; 2. Multi-layer metal mesh; 3. Porous waterproof film; 4. Absorbent paper; 5. Mask; 51. Upper opening; 52. Lower opening; 53. Hanging rope; 6. Pocket. DETAILED DESCRIPTION

[0037] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0038] As attached Figure 1 To Attachment Fig.14 As shown:

[0039] Embodiment 1: The utility model provides a respiratory heat exchanger, comprising a frame; a multi-layer metal mesh, which is pressed by multiple layers of metal mesh and installed in the frame, and its mesh edge is completely wrapped by the frame; a porous waterproof sheet, which is installed in the frame and arranged on the multi-layer metal mesh; absorbent paper, which is arranged in a groove below the frame.

[0040] The material of the frame is one of thermoplastic elastomer TPE and silicone. A nose cover is provided at the upper end of the frame and a water collection tank is provided at the lower end. The frame is an integrated design. It can also be made with other non-toxic and odorless elastic materials and methods. The size of the frame is designed according to the size of the multi-layer metal mesh. The functions are: 1. Wrap the edge of the multi-metal mesh to ensure safety; 2. Integrate multiple components together to form a relatively solid whole; 3. Integrate the functions of the water collection tank, nose cover, etc. to increase manufacturability; 4. The elastic material is non-toxic and odorless and can be cleaned and sterilized with hot water.

[0041] The multi-layer metal mesh is pressed into an arc shape, and the size of the arc can be designed according to the face shape. It can be made of aluminum, copper, stainless steel, or non-metallic materials such as graphene. The function is to act as a heat exchanger, absorbing heat when exhaling and releasing heat when inhaling; Material form: The material form can be selected from mesh, perforated sheet, cloth, foam and other forms with good air permeability and thermal conductivity; The heat capacity of the multi-layer metal mesh is between 5J / ℃ and 100J / ℃, and it can be designed according to the use of adults, children and environmental levels such as: hot (above 38℃), cold (-9℃~-1℃), extreme cold (below -40℃) and other conditions; The number of layers is designed according to various factors such as material weight and air permeability, ranging from 2 to 50 layers, and a single layer of foam is also acceptable, and a very thin gauze can also be more than 50 layers; Its size is a trapezoidal upper side length of 50mm~160mm, a lower side length of 50mm~150mm, and a height of 40mm~140mm, which can be designed according to the facial features of adults, children, races, etc.

[0042] like Figure 7 As shown, the porous waterproof sheet covers the area where condensation water is prone to appear on the multi-layer metal mesh, and can also be designed into a trapezoidal shape of the multi-layer metal mesh to completely cover the multi-layer metal mesh; the porous waterproof sheet material is one of polyester film, polytetrafluoroethylene film, and plastic film, with a thickness of 0.01mm to 0.5mm, and the aperture setting standard is that the total area of ​​the holes is not less than 5% of the film area.

[0043] The absorbent paper is placed in the water collection tank, and its material is facial tissue, toilet paper, dehydrated cotton and other absorbent materials. At low temperatures, the saturated water vapor exhaled from the mouth and nose condenses when it is cold, forming liquid water, and the water falls into the water collection tank. The absorbent paper is placed in the water collection tank to fix the water. The absorbent paper is replaced after it is full of water. When the ambient temperature is higher than 10℃, there is less condensed water, and absorbent paper can be omitted.

[0044] The breathing heat exchanger is composed of a frame, a multi-layer metal mesh, a porous waterproof sheet and absorbent paper.

[0045] Also includes masks, such as Figure 8 As shown, it is set in a pocket shape for placing a heat exchanger for breathing. The mask is made of non-woven fabric or other cloth materials for cold-proof masks. Non-woven masks are used once, and cloth masks are used multiple times and washed after use. The number of layers is set to more than two layers. A heat exchanger for breathing is placed in the middle, and hanging ropes are fixed on both sides. The mask is set to open at the top or at the bottom. It has good air permeability and should be able to meet the breathing needs of general outdoor activities.

[0046] Preferably, it also includes a pocket for placing a respiratory heat exchanger. The pocket material is made of non-woven fabric or other cloth materials for cold-proof masks. The non-woven fabric pocket is used once, and the cloth pocket is used multiple times and is washed after use. The shape is set to be rectangular. When using other types of masks (non-pocket masks), scarves, and neckbands, the respiratory heat exchanger should be put into the pocket for use to avoid direct contact between the respiratory heat exchanger and the face, reduce potential risks (such as allergic reactions of the face to the material), and reduce organic pollution of the respiratory heat exchanger. In order to improve air permeability, a single-layer pocket can be used, shaped like Fig. 9 As shown, the upper and lower parts adopt double-layer design, and the middle part adopts single-layer design, and both sides of the double layers are bonded; after installing the respiratory heat exchanger, the situation is as follows Fig.10 As shown, the air flows through only one layer of fabric.

[0047] As can be seen from the above, first install the multi-layer metal mesh in the frame, the frame completely wraps the edge of the mesh, and the exposed metal mesh has no sharp corners, burrs and other safety hazards. Then press the porous waterproof sheet on the metal mesh and install it in the frame; when using, put the respirator into the replaceable absorbent paper, and then put it into the special pocket-shaped mask with good air permeability for use; the respirator can also be put into a special pocket with good air permeability, and then put it into other various masks for use, and can also be placed in a scarf or neckband for use.

[0048] Working principle: Install the respiratory heat exchanger into the mask to form a heat exchange mask and wear it. The respiratory heat exchanger is located directly in front of the mouth and nose. When exhaling and inhaling, the airflow must pass through a multi-layer metal mesh with good air permeability. The multi-layer metal mesh is the heat exchange layer. The heat exchange layer has a certain heat capacity and can store heat.

[0049] 1. When exhaling:

[0050] The temperature of human exhaled gas is 36℃-37℃. Its main components are: nitrogen (75%), oxygen (16%), rare gases (0.94%), carbon dioxide (4%), and water vapor (4.06%). The gas exhaled by humans is almost saturated water vapor.

[0051] When the exhaled gas passes through the heat exchange layer, the saturated water vapor at a temperature of 36-37°C will quickly heat the heat exchange layer, causing the temperature of the heat exchange layer to rise. When the exhalation ends, the temperature of the heat exchange layer will be close to 36°C. When the air temperature is low, the temperature of the heat exchange layer is also low. When the exhaled saturated water vapor meets the heat exchange layer, the water vapor will liquefy and release a large amount of heat, heating the heat exchange layer, and finally the temperature will tend to 36°C. After the water vapor liquefies, it becomes liquid water. When there is too much liquid water in the heat exchange layer, it will fall into the water collector. Since the gas passes through the heat exchange layer unevenly, the temperature of the heat exchange layer is not uniform, but the overall temperature is close to the temperature of the exhaled gas.

[0052] When exhalation ends, the temperature of the heat exchange layer is approximately 20℃-36℃. The heat exchange layer stores part of the heat, liquid water and water vapor discharged when the human body exhales, providing energy and moisture for heating the air during inhalation.

[0053] 2. When inhaling:

[0054] When inhaling, the external cold air passes through the heat exchange layer, absorbs the heat and water vapor stored in the heat exchange layer, making the air heated and humidified. When it enters the mouth and nose, the temperature and humidity will change significantly, reducing the discomfort caused by the dry and cold air.

[0055] When air flows rapidly through the liquid water in the heat exchange layer, part of the water will evaporate and gasify, increasing the humidity of the air.

[0056] During the inhalation process, the cold air absorbs heat and its temperature rises, while the heat exchange layer loses heat and its temperature drops. At the end of the inhalation, the temperature of the heat exchange layer should be kept above 10°C. Above this temperature, most people can breathe freely for a long time.

[0057] 3. Temperature changes during breathing

[0058] exist Fig.11 and Fig.12 As can be seen in the figure, the air temperature inside the mask fluctuates around the temperature of the heat exchange layer, rising when exhaling and falling when inhaling. The air temperature inside the mask is different at different ambient temperatures. Fig.11 and Fig.12When the heat exchange layer is the same, the air temperature fluctuation inside the mask is different for different ambient temperatures. In the figure, inhalation means the start of inhalation, and exhalation means the start of exhalation.

[0059] At the same ambient temperature, the heat capacity of the heat exchange layer is different, and the air temperature fluctuation inside the mask is also different, such as Fig.13 Shown is the situation after the heat capacity is increased;

[0060] In high temperature environments, using heat exchange masks can reduce air temperature and maintain human health. Fig.14 shown.

[0061] When breathing, the volume of inhaled air varies from person to person, and the airflow channel for breathing is also complex. Figure 12-14 It can be seen that the larger the heat capacity of the heat exchange layer, the better the effect; when designing the heat capacity of the heat exchange layer, it is necessary to determine it according to the use environment. The further the ambient temperature deviates from 36°C, the larger the heat capacity design.

[0062] The utility model designs a metal mask from a scientific perspective, which subverts people's cognition and changes the inhaled cold and dry air into warm and moist air, solving the last difficult problem of human beings to keep warm.

[0063] The occasions for using heat exchange masks are as follows:

[0064] 1. Winter outdoor activities: In winter when the temperature is low, the use of the utility model allows for long-term outdoor activities, expanding the space for living and working.

[0065] 2. Outdoor sports: In outdoor sports, the use of the utility model can significantly reduce the loss of human body heat during breathing, improve and prevent the occurrence of human body hypothermia.

[0066] 3. For patients who have undergone nasal surgery (or patients who must breathe through their mouths), the use of the utility model can alleviate the discomfort caused by dry air.

[0067] 4. When working in a high temperature environment above 40°C, the use of the utility model can reduce the temperature of the inhaled air and maintain a longer working time.

[0068] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0069] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0070] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0071] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A respiratory heat exchanger, characterized in that: include: frame; Multi-layer metal mesh, which is pressed from multiple layers of metal mesh and installed in a frame, with the edges of the mesh completely wrapped by the frame; A porous waterproof sheet is installed in the frame and set on a multi-layer metal mesh; Absorbent paper is placed in the groove below the frame.

2. A respiratory heat exchanger as claimed in claim 1, characterized in that: The material of the frame is one of thermoplastic elastomer TPE and silicone. A nose cover is arranged at the upper end of the frame, and a water collecting trough is opened at the lower end. The frame as a whole is an integrated design.

3. A respiratory heat exchanger as claimed in claim 1, characterized in that: The multi-layer metal mesh is pressed into an arc shape and is made of one of aluminum, copper, stainless steel, and graphene. The heat capacity of the multi-layer metal mesh is between 5 J / °C and 100 J / °C, and the number of layers is set in the range of 2 to 50 layers.

4. A respiratory heat exchanger as claimed in claim 1, characterized in that: The porous waterproof sheet covers the area of ​​the multi-layer metal net where condensation water is likely to appear. The porous waterproof sheet material is one of polyester film, polytetrafluoroethylene film, and plastic film, with a thickness of 0.01mm to 0.5mm. The aperture setting standard is that the total area of ​​the holes is not less than 5% of the film area.

5. A respiratory heat exchanger as claimed in any one of claims 1 to 2, characterized in that: The absorbent paper is arranged in the water collecting tank, and its material is a kind of absorbent material such as facial tissue paper and dehydrated cotton.

6. A respiratory heat exchanger as claimed in claim 1, characterized in that: It also includes a mask, which is arranged in a pocket shape and is used to place a heat exchanger for breathing. The mask is made of non-woven fabric or other cloth materials for cold-proof masks, and the number of layers is set to be more than two. A heat exchanger for breathing is placed in the middle, and hanging ropes are fixed on both sides. The mask is arranged in two forms: upper opening or lower opening.

7. A respiratory heat exchanger as claimed in claim 1, characterized in that: It also includes a pocket for placing a heat exchanger for breathing, and the pocket material is made of non-woven fabric or other cloth materials for cold-proof masks and is arranged as a single layer.

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