Power air supply device for fire fighting

Abstract

The utility model relates to the technical field of fire fighting, in particular to a power air supply device for fire fighting, which is characterized in that ventilating ducts are arranged in an outer protective shell of a helmet and are uniformly distributed, so that after a fan starts to work to supply air, the whole helmet can be fully filled with air through the ventilating ducts, and then the air is uniformly supplied to a user through a buffer layer; the cooling and ventilation effects are achieved. According to the helmet, air can be evenly supplied to a user only by connecting the air supply pipe, use of hoses is reduced, and the helmet is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of fire fighting, in particular to a power air supply device for fire fighting. Background Art

[0002] Because of the high temperature during the firefighting process, firefighters need to use auxiliary tools to cool down, so in the prior art, an air supply device is added to the firefighter's helmet. In the prior art, most air supply devices use hoses to connect the helmet. In order to ventilate all directions of the helmet, multiple hoses are used to supply air. For example, the protective clothing air supply device disclosed in patent CN202311341759.1 has multiple hoses connected to different parts of the helmet. The main purpose is to ventilate the user from different angles. However, this structure is easy to pull out the hose when in use, and it is inconvenient to assemble and wear because there are too many structures, so it is not convenient for the actual operation of firefighters. Summary of the invention

[0003] The utility model provides a powered air supply device for fire fighting in view of the problems of the prior art. A ventilation duct is built into the helmet, and air is supplied to the users through the air supply holes of the buffer layer. The ventilation duct realizes uniform air supply to the users, thereby eliminating the need for an external hose of the helmet and making the external structure of the helmet simpler.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a powered air supply device for fire fighting, comprising a head protection device and an air supply device, the air supply device comprising a fan and an air supply shell, the fan is mounted on the air supply shell, and the air supply shell is equipped with a mounting belt; the head protection device comprises a helmet and a mask, the mask is mounted on the helmet, the helmet comprises an outer protective shell and a buffer layer arranged sequentially from the outside to the inside, the outer protective shell has a plurality of ventilation ducts built in, the plurality of ventilation ducts are evenly distributed in the outer protective shell, the ventilation ducts are provided with a plurality of through holes, the buffer layer is evenly provided with a plurality of air supply holes, the air supply holes are connected with the through holes, the outer protective shell is provided with an air inlet, and the air inlet is connected with the ventilation duct; the air supply shell is provided with an air outlet, and an air supply pipe is connected between the air outlet and the air inlet.

[0005] Preferably, the outer protective shell is further provided with a cavity layer between the buffer layer, and the cavity layer is connected with the through hole and the air supply hole.

[0006] Preferably, a plurality of the fans are provided, and the plurality of fans can be detachably assembled on the air supply casing.

[0007] Preferably, the air supply casing includes a shell and a base, the base is fixed to the shell, the base is equipped with a first guide rail, the fan is equipped with a second guide rail, the second guide rail is used for sliding connection with the first guide rail, and the radial cross-sections of the first guide rail and the second guide rail are both L-shaped.

[0008] Preferably, the shell includes an outer cover and filters arranged at both ends of the outer cover.

[0009] Preferably, the air supply pipe is equipped with an air volume regulating valve.

[0010] Preferably, a sprayer is installed in the air supply housing, and the sprayer is used to generate mist to cool down the user.

[0011] Beneficial effects of the utility model:

[0012] The utility model provides a powered air supply device for fire fighting, in which ventilation ducts are built into the outer protective shell of the helmet, and the ventilation ducts are evenly distributed, so that after the fan starts to work and supply air, the air can spread all over the helmet through the ventilation duct, and then the air is evenly supplied to the user through the buffer layer, so as to achieve the effect of cooling and ventilation. The helmet of the utility model only needs to be connected to an air supply pipe to evenly supply air to the user, reducing the use of hoses and being easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the head protection device of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the buffer layer of the utility model;

[0016] Figure 4 It is a partial cross-sectional view of the helmet of the present invention;

[0017] Figure 5 The structure of the ventilation duct of the outer protective shell of the utility model is schematically shown. Figure 1 ;

[0018] Figure 6 It is a schematic diagram of the structure of the through hole of the ventilation duct of the utility model;

[0019] Figure 7 It is a structural schematic diagram of the air supply device of the utility model;

[0020] Figure 8 It is a structural schematic diagram of the first guide rail of the utility model;

[0021] Fig. 9It is a structural schematic diagram of the fan and base of the utility model.

[0022] exist Figures 1 to 9 Reference numerals in the drawings include:

[0023] 1-fan, 2-shell, 3-base, 4-helmet, 5-mask, 6-outer protective shell, 7-buffer layer, 8-ventilation duct, 9-through hole, 10-air supply hole, 11-air inlet, 12-air outlet, 13-air supply pipe, 14-cavity layer, 15-first guide rail, 16-second guide rail, 17-filter, 18-air volume regulating valve. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the implementation modes are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0025] This embodiment provides a powered air supply device for fire fighting, such as Figures 1 to 9 , including a head protection device and an air supply device, the air supply device includes a fan 1 and an air supply housing, the fan 1 is mounted on the air supply housing, and the air supply housing is equipped with a mounting belt (not shown in the attached drawings); the head protection device includes a helmet 4 and a mask 5, the mask 5 is mounted on the helmet 4, the helmet 4 includes an outer protective shell 6 and a buffer layer 7 arranged from the outside to the inside, the outer protective shell 6 has a plurality of ventilation ducts 8 built in, the plurality of ventilation ducts 8 are evenly distributed in the outer protective shell 6, the ventilation duct 8 is provided with a plurality of through holes 9, the buffer layer 7 is evenly provided with a plurality of air supply holes 10, the air supply holes 10 are connected with the through holes 9, the outer protective shell 6 is provided with an air inlet 11, and the air inlet 11 is connected with the ventilation duct 8; the air supply housing is provided with an air outlet 12, and an air supply pipe 13 is connected between the air outlet 12 and the air inlet 11. Among them, the fan 1 is a prior art, and the motor drives the fan blades to rotate to drive the change of airflow to achieve air supply. In addition, the air supply device of this embodiment is also provided with a power source, such as a rechargeable battery, etc., for supplying power to structures requiring electricity, such as the fan 1, which is a prior art.

[0026] Specifically, Figure 1 As shown, the air supply device supplies air to the helmet 4 through the air supply pipe 13, and the ventilation duct 8 built into the helmet 4 is as shown in FIG. Figure 5 and Figure 6 As shown, the ventilation ducts 8 are evenly distributed, the air inlet 11 of the outer protective shell 6 is connected to the ventilation duct 8, and the air flows to various positions of the outer protective shell 6 through the ventilation duct 8. The setting of the ventilation duct 8 can be Figure 5The circular shape shown may also be a radial structure extending outward from the air inlet 11 of the outer protective shell 6, as long as it can evenly cover the outer protective shell 6. Further, a cavity layer 14 is provided between the outer protective shell 6 and the buffer layer 7 in this embodiment. Figure 4 As shown, the wind in the ventilation duct 8 flows to the cavity layer 14 via the through hole 9, so that the cavity layer 14 is filled with wind flow. Therefore, the wind flows to the buffer layer 7 with the help of the cavity layer 14, and then the wind is delivered to the head of the user through the air supply hole 10 of the buffer layer 7. Because the cavity layer 14 is full of wind, the wind delivered by the buffer layer 7 also fills the entire helmet 4, so as to achieve the purpose of uniformly supplying air to the user, and there is no need to connect multiple hoses to the helmet 4, so that the structure of the helmet 4 of this embodiment is simpler and the situation of hoses falling off during use is reduced.

[0027] like Figure 1 , Figures 7 to 9 As shown, the fan 1 of this embodiment is provided with multiple, and the air volume is adjusted by the working data of the fan 1. In addition, an air volume regulating valve 18 can be installed on the air supply pipe 13, and the air supply volume is adjusted by the air volume regulating valve 18 to meet the needs of different situations. The air volume regulating valve 18 of this embodiment is a prior art. The air supply housing of this embodiment includes a shell 2 and a base 3, the base 3 is fixed to the shell 2, the base 3 is equipped with a first guide rail 15, and the fan 1 is equipped with a second guide rail 16, the second guide rail 16 is used to be slidably connected with the first guide rail 15, and the radial cross-sections of the first guide rail 15 and the second guide rail 16 are both L-shaped.

[0028] Specifically, during installation, remove the filter 17 and insert the fan 1 into the air supply housing from the position where the filter 17 is installed. Figure 8 and Fig. 9 As shown, the second guide rail 16 of the fan 1 is slidably connected with the first guide rail 15 of the base 3, so that several fans 1 can be slid to the corresponding positions. With the cooperation of the first guide rail 15 and the second guide rail 16, the fan 1 is not easy to be separated from the shell 2, and then the filter 17 can be installed. The installation method of the filter 17 and the assembly method of the base 3 and the shell 2 are all existing technologies, such as assembly by hooks and snap connections, and can also be assembled by screws. This embodiment does not limit it. Furthermore, since there is a lot of dust in the process of firefighting, the filter 17 is set to first block the dust and other impurities in the wind, reduce the dust and other impurities sent into the helmet 4 with the wind flow, and reduce the impact on the user.

[0029] Furthermore, a sprayer (not shown in the drawings) is installed in the air supply housing, and the sprayer is used to generate mist to cool down the user. Specifically, the sprayer is used to generate water mist. For example, in the process of extinguishing a fire, the water mist generated by the sprayer can cool down the user. The sprayer is a prior art and can be installed in the air supply housing in the same way as the fan 1.

[0030] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A powered air supply device for fire fighting, characterized in that: The invention comprises a head protection device and an air supply device, wherein the air supply device comprises a fan and an air supply shell, wherein the fan is mounted on the air supply shell, and the air supply shell is provided with a mounting belt; the head protection device comprises a helmet and a mask, wherein the mask is mounted on the helmet, and the helmet comprises an outer protective shell and a buffer layer which are arranged in sequence from the outside to the inside, wherein the outer protective shell is provided with a plurality of ventilation ducts, wherein the plurality of ventilation ducts are evenly distributed on the outer protective shell, wherein the ventilation ducts are provided with a plurality of through holes, wherein the buffer layer is evenly provided with a plurality of air supply holes, wherein the air supply holes are connected with the through holes, wherein the outer protective shell is provided with an air inlet, and the air inlet is connected with the ventilation duct; the air supply shell is provided with an air outlet, and an air supply pipe is connected between the air outlet and the air inlet.

2. A powered air supply device for fire fighting according to claim 1, characterized in that: The outer protective shell is further provided with a cavity layer between the buffer layer, and the cavity layer is communicated with the through hole and the air supply hole.

3. A powered air supply device for fire fighting according to claim 1, characterized in that: A plurality of the fans are provided, and the plurality of the fans can be detachably assembled on the air supply housing.

4. A powered air supply device for fire fighting according to claim 3, characterized in that: The air supply housing includes a shell and a base, the base is fixed to the shell, the base is equipped with a first guide rail, the fan is equipped with a second guide rail, the second guide rail is used for sliding connection with the first guide rail, and the radial cross-sections of the first guide rail and the second guide rail are both L-shaped.

5. A powered air supply device for fire fighting according to claim 4, characterized in that: The shell comprises an outer cover and filter screens arranged at two ends of the outer cover.

6. A powered air supply device for fire fighting according to claim 1, characterized in that: The air supply pipe is equipped with an air volume regulating valve.

7. A powered air supply device for fire fighting according to claim 1, characterized in that: A sprayer is arranged in the air supply housing, and the sprayer is used to generate mist to cool down the user.

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