Respiratory protection device

Abstract

The utility model discloses a respiratory protection device which comprises a shell, a fan assembly, a filtering device, an air duct and a battery assembly are arranged on the shell, the fan assembly and the filtering device are arranged in the first direction, the filtering device and the battery assembly are arranged in the second direction, and the fan assembly and the filtering device are located on the same side of the air duct in the third direction. The air duct is used for guiding air flow between the filtering device and the fan assembly; the first direction is one of the width direction and the length direction of the shell, the second direction is the other one of the width direction and the length direction of the shell, and the third direction is the thickness direction of the shell. The breathing protection device is lighter and thinner and is more flexible to operate in a narrow space.

Description

Technical Field

[0001] This utility model relates to the field of respiratory protection technology, and in particular to a respiratory protection device. Background Technology

[0002] Some special industries and jobs require respiratory protection, such as occupational safety and medical protection. With the development of technology, respiratory protection devices that can provide fresh air are becoming more and more common.

[0003] Respiratory protection devices generally include: a fan, a filter, an air guide channel, and a housing. The housing houses the fan, filter, and air guide channel. The fan generates airflow, the filter is designed to allow airflow through it, and the air guide channel guides the airflow between the filter and the fan. However, in existing respiratory protection devices, the fan and filter are stacked, resulting in a large thickness and excessive weight. When working in confined spaces wearing this device, the operator's movement space is restricted, flexibility is reduced, and there is a higher risk of collisions with other objects in the workplace, creating other safety hazards. Utility Model Content

[0004] In order to overcome at least one of the defects described in the prior art, the present invention provides a respiratory protection device that is lighter and thinner, and more flexible to operate in confined spaces.

[0005] The technical solution adopted by this utility model to solve its problem is:

[0006] A respiratory protection device includes a housing, on which a fan assembly, a filter, an air duct, and a battery assembly are disposed.

[0007] The fan assembly and filter device are arranged along a first direction, the filter device and battery assembly are arranged along a second direction, and the fan assembly and filter device are located on the same side of the air duct along a third direction. The air duct is used to guide the airflow between the filter device and the fan assembly.

[0008] The first direction is one of the width or length directions of the shell, the second direction is the other of the width or length directions of the shell, and the third direction is the thickness direction of the shell.

[0009] Furthermore, the filtration device and the battery assembly are located on the same side of the fan assembly along the first direction.

[0010] Furthermore, the fan assembly includes a vortex fan, a fan upper cover, and a fan lower cover. The fan upper cover and the fan lower cover are connected and form a blower cavity. The blower cavity has a fan inlet and a fan outlet. The fan inlet is located on the fan lower cover and faces the air duct opening. In a first direction, the fan outlet corresponds to the position of the battery assembly, and the fan outlet discharges air in a direction away from the battery assembly.

[0011] Furthermore, the air inlet and outlet of the filter device are arranged sequentially along the third direction towards the air duct.

[0012] Furthermore, the housing includes a bottom shell and an outer shell, which are connected to form an installation cavity. The fan assembly is disposed in the installation cavity, and the air duct is disposed in the bottom shell. The outer shell is provided with a filter element installation groove that extends through the first direction. The filter device is detachably inserted into the filter element installation groove. The housing also includes an installation cover that is detachably or movably connected to the outer shell. The installation cover covers the filter element installation groove and presses and fixes the filter device in the filter element installation groove.

[0013] Furthermore, the inner side of the mounting cover is provided with several protrusions, which abut against the filter device to maintain a flow gap between the inner side of the mounting cover and the filter device. The side wall of the mounting cover away from the fan assembly is provided with a raw air inlet. When the breathing protection device is used on the back, the raw air inlet is located at the bottom.

[0014] Furthermore, the battery assembly includes a battery and a battery base. The battery base is disposed on the bottom shell, and the outer shell is provided with a battery insertion slot corresponding to the position of the battery base. The battery insertion slot is located on one side of the filter element mounting slot. A battery insertion port is provided on the side wall of the battery insertion slot away from the fan assembly. When the breathing protection device is used in a backpack setting, the battery insertion port is located at the bottom.

[0015] Furthermore, the mounting cover slides along the first direction and snaps onto the housing. When the mounting cover is locked onto the housing, it presses and fixes the battery in the battery insertion slot.

[0016] Furthermore, it also includes a control circuit board, and the battery base is provided with a control mounting groove facing the bottom shell opening, and the control circuit board is disposed in the control mounting groove.

[0017] Furthermore, the air duct is integrally formed into the bottom shell.

[0018] In summary, the respiratory protection device provided by this utility model has the following technical effects:

[0019] The filter unit and the fan assembly are arranged side by side on the same side, and the filter unit and the battery assembly are arranged side by side and connected by an air duct in the thickness direction. This allows the fan assembly, filter unit, and battery assembly to be spread out and arranged side by side in the width and length directions of the housing. The fan assembly and the filter unit are connected by an air duct in the thickness direction. The fan assembly, filter unit, and air duct are arranged in a triangular pattern, making the overall thickness of the product of this solution thinner and lighter, and giving users more flexibility in operation in confined spaces. Attached Figure Description

[0020] Figure 1 This is an explosion diagram of the respiratory protection device according to an embodiment of the present invention;

[0021] Figure 2 This is a cross-sectional schematic diagram of the respiratory protection device according to an embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram of the respiratory protection device according to an embodiment of the present invention after removing the outer shell and mounting cover;

[0023] Figure 4 This is a schematic diagram of the battery base according to an embodiment of the present invention.

[0024] The meanings of the reference numerals in the attached figures are as follows:

[0025] 1. Housing; 11. Bottom shell; 12. Outer shell; 121. Filter element mounting slot; 122. Battery insertion slot; 123. Battery insertion port; 13. Mounting cavity; 14. Mounting cover; 141. Protrusion; 142. Original air inlet; 2. Fan assembly; 21. Vortex fan; 22. Fan top cover; 23. Fan bottom cover; 24. Blower cavity; 25. Fan air inlet; 26. Fan air outlet; 3. Filter device; 4. Air duct; 5. Battery assembly; 51. Battery; 52. Battery base; 53. Control mounting slot; 54. Control circuit board; 6. Filter element base. Detailed Implementation

[0026] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0027] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0029] See Figures 1 to 3 This utility model discloses a respiratory protection device. The product is generally a backpack type and is usually used in conjunction with a face mask. It can purify harmful dust and harmful gases and protect the respiratory system of operators in special industry environments from irreversible damage and poisoning, such as COPD, carbon monoxide, hydrogen sulfide and other harmful gas poisoning.

[0030] In this embodiment, the respiratory protection device includes a housing 1, a fan assembly 2, a filter 3, an air duct 4, and a battery assembly 5. The housing 1 serves as a carrier, and the fan assembly 2, filter 3, air duct 4, and battery assembly 5 are all mounted on the housing 1. The housing 1 includes a bottom shell 11, an outer shell 12, and a mounting cover 14. The bottom shell 11 and the outer shell 12 are connected by screws or clips to form a mounting cavity 13. The fan assembly 2, air duct 4, and battery assembly 5 are disposed within the mounting cavity 13. The filter 3 is detachably mounted in the outer shell 12. The mounting cover 14 is slidably fastened to the outer shell 12. The mounting cover 14 can cover the filter 3, and the filter 3 can be removed and replaced after opening the mounting cover 14.

[0031] The mounting cover 14 can also be connected to the outer shell 12 in other ways, such as by pivoting the mounting cover 14 to the outer shell 12 and fixing it with a snap fastener, so as to achieve a detachable or movable connection between the mounting cover 14 and the outer shell 12.

[0032] Generally, the shell 1 is roughly flat and has length, width, and thickness directions. When used for carrying, its length extends vertically along the operator's back, its width extends horizontally along the operator's back, and its thickness extends forward and backward along the operator's back. If the shell 1 has other shapes, the length, width, and thickness directions of the shell 1 can be determined according to the vertical, horizontal, and forward / backward orientation of the operator's back.

[0033] See Figure 2 and Figure 3In this embodiment, the length direction of the housing 1 is defined as the first direction, the width direction of the housing 1 is defined as the second direction, and the thickness direction of the housing 1 is defined as the third direction. The fan assembly 2 and the filter device 3 are arranged along the first direction, the filter device 3 and the battery assembly 5 are arranged along the second direction, and the fan assembly 2 and the filter device 3 are located on the same side of the air duct 4 along the third direction. The air duct 4 is used to guide the airflow between the filter device 3 and the fan assembly 2. In the length-thickness direction, the fan assembly 2, the filter device 3, and the air duct 4 are arranged in a triangular pattern. More preferably, the filter device 3 and the battery assembly 5 are located on the same side of the fan assembly 2 along the first direction, and in the length-width direction, the fan assembly 2, the filter device 3, and the battery assembly 5 are arranged in a triangular pattern, so as not to occupy the width direction space of the fan assembly 2, and to ensure that the overall width of the housing 1 does not need to be made particularly large.

[0034] When using the mask, with the operator's body direction as a reference, the air duct 4 is close to the operator's back, so that the fan assembly 2 and the filter device 3 are located on the outside of the air duct 4 in the thickness direction, so as to facilitate the replacement of the filter device 3 and air intake. The fan assembly 2 is located above the filter device 3 and the battery assembly 5, so that the fan assembly 2 runs from above and supplies air to the mask.

[0035] It should be noted that in other examples, the fan assembly 2 and the filter device 3 can also be arranged along the width direction of the housing 1, while the filter device 3 and the battery assembly 5 are arranged along the length direction of the housing 1. That is, the length direction of the housing 1 can be defined as the second direction, and the width direction of the housing 1 can be defined as the first direction.

[0036] In the respiratory protection device of this embodiment, the fan assembly 2, the filter device 3, and the battery assembly 5 are spread out and arranged side by side in the width and length directions of the housing 1. The fan assembly 2 and the filter device 3 are connected by the air duct 4 in the thickness direction. The fan assembly 2, the filter device 3, and the air duct 4 are arranged in a triangular pattern, which makes the overall thickness of the product of this solution thinner and lighter, and gives users more flexibility in operation in a confined space.

[0037] See Figures 1 to 3 In this embodiment, the air duct 4 is integrally formed on the bottom shell 11. Specifically, the bottom shell 11 has a raised section forming a baffle wall of the air duct 4 connected end to end. The baffle wall of the air duct 4 forms an air duct 4 with an opening on one side in the bottom shell 11. Compared with the air duct 4 structure that can be detached from the bottom shell 11, the effective cross-sectional area of ​​the air duct 4 in this solution can be maximized, resulting in low wind resistance. When the same air volume is output, the motor of the fan assembly 2 requires less power and has lower noise. Moreover, the structure is simple and the cost is low.

[0038] See Figures 1 to 3In this embodiment, the fan assembly 2 adopts a vortex fan structure. Since the filter device 3 and the battery assembly 5 are located on the same side of the fan assembly 2, it is preferable that the fan outlet of the fan assembly 2 corresponds to the position of the battery assembly 5 and blows air in a direction away from the battery assembly 5. Specifically, the fan assembly 2 includes a vortex fan 21, a fan upper cover 22, and a fan lower cover 23. The fan upper cover 22 and the fan lower cover 23 are connected and form a blower cavity 24. The blower cavity 24 has a fan inlet 25 and a fan outlet 26. The fan inlet 25 is located on the fan lower cover 23 and opens towards the air duct 4. The fan lower cover 23 is fixed to the base by screws or other means and blocks part of the opening area of ​​the air duct 4. The fan inlet 25 also serves as the air outlet of the air duct 4. The other part of the opening area of ​​the air duct 4 is blocked by the filter element base 6. The filter element base 6 has a hollow center to serve as the air inlet of the air duct 4. In the first direction, the fan outlet 26 corresponds to the position of the battery assembly 5, and the fan outlet 26 discharges air away from the battery assembly 5. In this way, by placing the filter device 3 and the battery assembly 5 on the lower side of the fan assembly 2, the airflow enters the blower chamber 24 from the thickness direction and then exits upward from the fan outlet 26. This allows the breathing protection device to be larger in the first direction and smaller in the second direction, making full use of the operator's back height space to carry the breathing protection device. It also makes it convenient for the pipe from the fan outlet 26 to the mask to be arranged across the corresponding shoulder.

[0039] See Figure 1 and Figure 2 In this embodiment, the overall airflow of the breathing protection device is also optimized: a flow gap is formed between the inner side of the mounting cover 14 and the filter device 3, and a primary air inlet 142 is provided on the side wall of the mounting cover 14 away from the fan assembly 2. When the breathing protection device is used on the back, the primary air inlet 142 is located at the bottom. Specifically, Figure 2 When the direction shown is for reference, air enters the housing 1 from bottom to top through the original air inlet 142, and then enters the air duct 4 from right to left through the filter device 3. In the air duct 4, it flows from bottom to top and then enters the fan assembly 2, and then flows out upward from the fan outlet 26 in the fan assembly 2. In this way, the air inlet (i.e., the original air inlet 142) is set at the bottom, so that when the operator carries it for operation, only some water mist or fine dust will enter during the negative pressure suction. This can effectively prevent water droplets, large dust particles or debris from falling into the filter device 3 and causing blockage and pollution.

[0040] Specifically, the inner surface of the mounting cover 14 is provided with a plurality of protrusions 141, which abut against the filter device 3, thereby maintaining a flow gap between the inner surface of the mounting cover 14 and the filter device 3. Alternatively, the protrusions 141 are provided on the filter device 3, and the protrusions 141 abut against the inner surface of the mounting cover 14; or both the inner surface of the mounting cover 14 and the filter device 3 are provided with protrusions 141 to abut against each other.

[0041] See Figure 1 and Figure 2 In this embodiment, the outer casing 12 is provided with a filter element mounting groove 121 and a battery insertion groove 122. The filter element mounting groove 121 extends through the first direction and corresponds to the air inlet position of the air duct 4. The filter device 3 is detachably inserted into the filter element mounting groove 121. The air inlet and air outlet of the filter device 3 are arranged sequentially towards the air duct 4 along the third direction, so that the cross-section of the air inlet channel is large and large-area filtration is performed, which is beneficial to reduce wind noise. A filter element base 6 is provided at the air duct 4. The filter element base 6 is roughly rectangular or square frame-shaped to form the air inlet of the air duct 4. The filter element base 6 is used to support the filter device 3. The air inlet of the air duct 4 corresponds to the air outlet of the filter device 3. When the mounting cover 14 is fixedly connected to the outer casing 12, the mounting cover 14 covers the filter element mounting groove 121 and presses and fixes the filter device 3 in the filter element mounting groove 121, thereby preventing the filter device 3 from loosening. It should be noted that the filter device 3 can be any known structure. The innovation of this utility model does not lie in the structure of the filter device 3, therefore the filter device 3 is not limited.

[0042] The battery insertion slot 122 is located on one side of the filter element mounting slot 121. A battery insertion port 123 is provided on the side wall of the battery insertion slot 122 away from the fan assembly 2. When the breathing protection device is used on a backpack, the battery insertion port 123 is located at the bottom. The battery assembly 5 includes a battery 51 and a battery base 52. The battery base 52 is located on the bottom shell 11. The battery insertion slot 122 corresponds to the position of the battery base 52. The battery 51 can be installed into the battery base 52 from bottom to top through the battery insertion port 123. The outer shell 12 provides shielding protection for the battery 51, preventing dust and water damage. Furthermore, when the mounting cover 14 is locked to the outer shell 12, the mounting cover 14 presses and fixes the battery 51 in the battery insertion slot 122, thereby preventing the battery 51 from loosening.

[0043] Combined Figure 4 It also includes a control circuit board 54. The battery base 52 is provided with a control mounting groove 53 that opens toward the bottom shell 11. The control circuit board 54 is disposed in the control mounting groove 53. In this way, the one-way opening of the control mounting groove 53 can protect the control circuit board 54 and prevent moisture and dust from entering, which may cause short circuits and safety hazards.

[0044] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A respiratory protection device, characterized in that, The system includes a housing, on which a fan assembly, a filter device, an air duct, and a battery assembly are disposed. The fan assembly and the filter device are arranged along a first direction, the filter device and the battery assembly are arranged along a second direction, and the fan assembly and the filter device are located on the same side of the air duct along a third direction. The air duct is used to guide the airflow between the filter device and the fan assembly. The first direction is one of the width direction or the length direction of the housing, the second direction is the other of the width direction or the length direction of the housing, and the third direction is the thickness direction of the housing.

2. The respiratory protection device according to claim 1, characterized in that, The filtration device and the battery assembly are located on the same side of the fan assembly along a first direction.

3. The respiratory protection device according to claim 2, characterized in that, The fan assembly includes a vortex fan, a fan top cover, and a fan bottom cover. The fan top cover and the fan bottom cover are connected and form a blower cavity. The blower cavity has a fan inlet and a fan outlet. The fan inlet is located on the fan bottom cover and faces the air duct opening. In a first direction, the fan outlet corresponds to the position of the battery assembly, and the fan outlet discharges air in a direction away from the battery assembly.

4. The respiratory protection device according to any one of claims 1 to 3, characterized in that, The air inlet and outlet of the filter device are arranged sequentially along a third direction toward the air duct.

5. The respiratory protection device according to claim 4, characterized in that, The housing includes a bottom shell and an outer shell, which are connected to form a mounting cavity. The fan assembly is disposed in the mounting cavity, and the air duct is disposed in the bottom shell. The outer shell is provided with a filter element mounting groove that extends through a first direction. The filter device is detachably inserted into the filter element mounting groove. The housing also includes a mounting cover that is detachably or movably connected to the outer shell. The mounting cover covers the filter element mounting groove and presses and fixes the filter device in the filter element mounting groove.

6. The respiratory protection device according to claim 5, characterized in that, The inner side of the mounting cover is provided with several protrusions, which abut against the filter device to maintain a flow gap between the inner side of the mounting cover and the filter device. The side wall of the mounting cover away from the fan assembly is provided with a raw air inlet. When the breathing protection device is used on the back, the raw air inlet is located at the bottom.

7. The respiratory protection device according to claim 5, characterized in that, The battery assembly includes a battery and a battery base. The battery base is disposed on the bottom shell. The outer shell is provided with a battery insertion slot corresponding to the position of the battery base. The battery insertion slot is located on one side of the filter mounting slot. A battery insertion port is provided on the side wall of the battery insertion slot away from the fan assembly. When the breathing protection device is used for backpack carrying, the battery insertion port is located at the bottom.

8. The respiratory protection device according to claim 7, characterized in that, The mounting cover slides along the first direction and is fastened to the outer casing. When the mounting cover is locked to the outer casing, the mounting cover presses and fixes the battery in the battery insertion slot.

9. The respiratory protection device according to claim 7, characterized in that, It also includes a control circuit board, wherein the battery base is provided with a control mounting groove facing the opening of the bottom shell, and the control circuit board is disposed in the control mounting groove.

10. The respiratory protection device according to claim 5, characterized in that, The air duct is integrally formed on the bottom shell.

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