CN212593563U - Fire control respirator - Google Patents

Abstract

The utility model discloses a fire control respirator, include: the device comprises a water storage unit, a hydrogen and oxygen hydrolysis unit, a compressed air unit, a breathing bin unit, a sensor, an electronic control unit, an air suction hose, a breathing hose and a breathing mask. The water storage unit stores purified water. The hydrolysis oxyhydrogen unit adopts the hydrolysis oxyhydrogen oxygen generation technology to decompose the purified water to generate hydrogen and oxygen. The compressed air unit quickly reduces the pressure of the compressed air and discharges the compressed air to generate reduced-pressure air. The breathing chamber unit mixes the oxygen and the reduced pressure air to generate a mixed gas. The sensor detects the pressure and the oxygen concentration of the mixed gas in the breathing chamber unit. The electronic control unit controls the air inflow of oxygen and reduced pressure air into the breathing chamber unit according to the oxygen concentration and pressure detected by the sensor. The suction hose delivers the mixed gas. The breathing hose provides the mixed gas to a user. The breathing mask is worn on the face of a user.

Description

Fire control respirator

Technical Field

The utility model relates to a respirator technical field, more specifically relate to an adopt fire control respirator of oxygen preparation technique of oxyhydrogen of hydrolysising.

Background

The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

The oxygen generating device of the existing fire-fighting respirator can not adjust the oxygen concentration, can not reduce the oxygen concentration when the oxygen concentration is too high, and can cause an oxygen intoxication accident in the using process because the oxygen concentration is too high. In addition, the existing fire-fighting breathing mask is not provided with a cooling device, and oxygen generated by the hydrogen-oxygen hydrolysis oxygen generation technology has higher temperature, so that in order to prevent the higher-temperature gas from causing harm to a breathing person, the temperature of the breathing gas must be reduced to a certain temperature by the cooling device. There is therefore a need to provide a new fire fighting respirator to address the above mentioned problems.

It should be noted that the above background description is only for the sake of clarity and complete description of the technical solutions of the present invention, and is set forth for facilitating understanding of those skilled in the art. These solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present invention.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the embodiment of the utility model provides a fire control respirator, mainly in the closed absolute pressure respirator that provides oxygen with the oxyhydrogen unit of hydrolysising for prevent that oxygen concentration is too high in the use, arouse the oxygen intoxication accident, and dispose cooling device and reduce breathing gas temperature below the acquiescence temperature, prevent that the gas of higher temperature from producing the injury to the breathing person.

In order to achieve the above object, an embodiment of the utility model discloses a fire control respirator, include: the device comprises a water storage unit, a hydrogen and oxygen hydrolysis unit, a compressed air unit, a breathing bin unit, a sensor, an electronic control unit, an air suction hose, a breathing hose and a breathing mask. The water storage unit stores purified water. The hydrolysis oxyhydrogen unit is coupled with the water storage unit and is used for decomposing the purified water to generate hydrogen and oxygen by adopting the hydrolysis oxyhydrogen oxygen generation technology. The compressed air unit quickly reduces the pressure of the compressed air and discharges the compressed air to generate reduced-pressure air. The breathing bin unit is coupled with the hydrolysis oxyhydrogen unit and the compressed air unit and is used for mixing oxygen and decompressed air to generate mixed gas. The sensor is used for detecting the pressure and the oxygen concentration of the mixed gas in the breathing chamber unit. The electronic control unit is coupled with the hydrolysis oxyhydrogen unit, the compressed air unit, the breathing chamber unit and the sensor, and is used for controlling the air input of oxygen and pressure-reduced air entering the breathing chamber unit according to the oxygen concentration and the pressure detected by the sensor so as to enable the pressure of the mixed gas to reach a preset air pressure and enable the oxygen concentration of the mixed gas to reach a preset oxygen concentration. The inspiration hose is coupled to the respiration bin unit and used for transmitting the mixed gas. The breathing hose provides the mixed gas to a user. The breathing mask is coupled with the breathing hose and is worn on the face by a user.

Optionally, the hydrolysis hydrogen-oxygen unit is formed by connecting a plurality of oxygen generation modules in parallel, and each oxygen generation module works independently.

Optionally, the fire fighting respirator further comprises a hydrogen storage tank unit, coupled to the oxyhydrogen hydrolysis unit, for absorbing and storing hydrogen generated by the oxyhydrogen hydrolysis unit under normal conditions and releasing hydrogen to the external environment under specific conditions.

Optionally, the fire fighting ventilator further comprises a cooling unit coupled between the breathing chamber unit and the inspiratory hose for reducing the temperature of the mixed gas below a default temperature.

Optionally, the fire fighting respirator further comprises: expiration hose, three-way valve and residual air purification unit. The expiration hose discharges the residual air expired by the user. The three-way valve is coupled between the inhalation hose, the breathing hose and the exhalation hose, and when a user inhales, the three-way valve introduces the mixed gas from the inhalation hose into the breathing hose to provide the mixed gas to the user, and when the user exhales, the three-way valve introduces the residual gas from the breathing hose into the exhalation hose. The residual air purification unit is coupled between the expiration hose and the breathing chamber unit and used for absorbing carbon dioxide and water vapor in the residual air to generate purified residual air and provide the purified residual air for the breathing chamber unit. Wherein, the breathing chamber unit mixes oxygen, reduced pressure air and purified residual gas to generate mixed gas.

Optionally, the fire fighting respirator further comprises: a first check valve, a second check valve, and a third check valve. The first one-way valve is coupled between the hydrolyzed hydrogen oxygen unit and the breathing chamber unit and allows oxygen to flow into the breathing chamber unit from the hydrolyzed hydrogen oxygen unit in one way. The second one-way valve is coupled between the compressed air unit and the breathing chamber unit and allows the decompressed air to flow into the breathing chamber unit from the compressed air unit in one way. The third check valve is coupled between residual air purification unit and the breathing cabin unit, and allows purified residual air to flow into the breathing cabin unit from the residual air purification unit in a one-way mode.

Optionally, the fire fighting respirator further comprises: a fourth check valve and a fifth check valve. The fourth check valve is coupled between the cooling unit and the suction hose, and allows the mixed gas to flow from the cooling unit into the suction hose in one direction. The fifth one-way valve is coupled between the expiration hose and the residual air purification unit, and allows the air to flow into the residual air purification unit from the expiration hose in one way.

Optionally, the fire fighting respirator further comprises: the man-machine operation unit is used for providing the functions of startup and shutdown, parameter display and system alarm; and a head-up display for displaying a plurality of parameters. The plurality of parameters includes at least one of voltage, pressure, temperature, oxygen concentration, water level, and remaining operating time.

Optionally, the fire fighting respirator further comprises a battery unit comprising a plurality of battery packs for providing electrical support to the fire fighting respirator. The plurality of battery packs are connected in series, the plurality of battery packs adopt explosion-proof battery units, and each battery pack is independently charged and discharged.

Optionally, the preset oxygen concentration is controlled between 21% -35%.

Borrow by above technical scheme, the beneficial effects of the utility model are as follows: the utility model discloses a fire control respirator utilizes the characteristic of compressed air decompression gassing fast, when beginning to use, can be so that in fire control respirator's the inner line, breathing gas reaches in the short time and predetermines atmospheric pressure, quick the use of coming into operation. When the oxygen concentration is too high, the purpose of reducing the oxygen concentration is achieved by supplementing compressed air and purifying residual air. The utility model discloses a fire control respirator is applicable to a fire control respirator that adopts the oxyhydrogen oxygen system oxygen technique of hydrolysising, mainly in the closed absolute pressure respirator that provides oxygen with the oxyhydrogen unit of hydrolysising, adjustment oxygen concentration to when oxygen concentration is too high, reduce oxygen concentration, be used for preventing that oxygen concentration is too high in the use, arouse the oxygen intoxication accident. Meanwhile, the temperature of the mixed gas is reduced to be below 40 ℃ by adopting an electronic cooling technology, so that the discomfort of the gas with overhigh temperature to a human body is avoided.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a block diagram of a fire-fighting respirator according to a first embodiment of the present invention.

Fig. 2 is a block diagram of a fire fighting respirator according to a second embodiment of the present invention.

Fig. 3 is a block diagram of a fire fighting respirator according to a third embodiment of the present invention.

Reference numerals of the above figures: 10. 20, 30, fire fighting respirator; 110. a water storage unit; 120. a hydrolysis oxyhydrogen unit; 130. a compressed air unit; 140. a breathing chamber unit; 150. a sensor; 160. an electronic control unit; 171. a suction hose; 172. a breathing hose; 173. an expiratory hose; 180. a respiratory mask; 210. a hydrogen storage bottle unit; 220. a cooling unit; 230. a three-way valve; 240. a residual gas purification unit; 311. a first check valve; 312. a second one-way valve; 313. a third check valve; 314. a fourth check valve; 315. a fifth check valve; 320. a human-machine operation unit; 330. a head-up display; 340. a battery cell.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no order is shown between the two, and no indication or suggestion of relative importance is understood. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Referring to fig. 1, fig. 1 is a block diagram of a fire fighting respirator according to a first embodiment of the present invention. As shown in FIG. 1, the fire fighting respirator 10 includes (but is not limited to): water storage unit 110, hydrolysis hydrogen-oxygen unit 120, compressed air unit 130, breathing chamber unit 140, sensor 150, electronic control unit 160, breathing hose 171, breathing hose 172 and breathing mask 180. The water storage unit 110 stores purified water to provide raw materials to the oxyhydrogen hydrolysis unit 120. The oxyhydrogen hydrolysis unit 120 is coupled to the water storage unit 110 for decomposing purified water to generate hydrogen and oxygen by using oxyhydrogen hydrolysis oxygen generation technology. The compressed air unit 130 rapidly depressurizes and deflates the compressed air to generate depressurized air. The breathing chamber unit 140 is coupled to the oxyhydrogen hydrolysis unit 120 and the compressed air unit 130 for mixing oxygen and depressurized air to generate a mixed gas. The sensor 150 is used to detect the pressure and oxygen concentration of the mixed gas in the breath bin unit 140. The electronic control unit 160 is coupled to the oxyhydrogen hydrolysis unit 120, the compressed air unit 130, the breathing chamber unit 140 and the sensor 150, and is configured to control the amount of oxygen and the amount of depressurized air entering the breathing chamber unit 140 according to the oxygen concentration and the pressure detected by the sensor 150, so as to enable the pressure of the mixed gas to reach a predetermined pressure and enable the oxygen concentration of the mixed gas to reach a predetermined oxygen concentration. The inhalation hose 171 is coupled to the breath bin unit 140 for transferring the mixed gas. The breathing hose 172 provides the mixed gas to a user. The breathing mask 180 is coupled to the breathing hose 172 for the user to wear on the face.

In one possible embodiment, the oxyhydrogen hydrolysis unit 120 is composed of a plurality of oxygen generation modules connected in parallel, the oxygen generation output and rate can be adjusted by controlling the power supply of the oxygen generation modules, each oxygen generation module works independently, the failure of the individual oxygen generation module does not affect the normal supply of the whole oxyhydrogen hydrolysis unit 120, and the working state (whether to supply oxygen, the supply amount …, etc.) of the oxyhydrogen hydrolysis unit 120 is controlled by the electronic control unit 160 according to the oxygen concentration and pressure detected by the sensor 150. The compressed air unit 130 is used to reduce the oxygen concentration of the breathing chamber unit 140, so as to control the oxygen concentration of the mixed gas in the breathing chamber unit 140 within a preset oxygen concentration, for example: the preset oxygen concentration is controlled to be between 21% and 35%.

In this embodiment, the electronic control unit 160 is the control center of the fire fighting respirator 10, and can determine whether to allow oxygen and compressed air to enter the breathing chamber unit 140 based on the oxygen concentration and pressure of the mixed gas detected by the sensor 150. For example, when the oxygen concentration of the mixed gas is detected to be too high (e.g., greater than the first threshold), the ecu 160 may notify the compressed air unit 130 to supplement the depressurized air to the breathing chamber unit 140 to reduce the oxygen concentration of the mixed gas; when the oxygen concentration of the mixed gas is detected to be normal (e.g., less than the first threshold), the electronic control unit 160 notifies the compressed air unit 130 to stop outputting the reduced pressure air to the breathing chamber unit 140, so as to maintain the oxygen concentration of the mixed gas. In other words, the fire fighting respirator 10 can utilize the sensor 150 and the electronic control unit 160 to adjust the oxygen concentration of the mixed gas in the breathing chamber unit 140 and reduce the oxygen concentration when the oxygen concentration is too high, so as to prevent the oxygen concentration from being too high during the use process and causing an oxygen intoxication accident.

Note that the compressed air unit 130 may be an air supply unit with a pressure reducer, which is provided with compressed air itself and performs rapid decompression and air release of the compressed air to generate decompressed air. Utilize the characteristic of the quick step-down gassing of compressed air, at the start work, can be so that the internal pipeline of fire control respirator 10, the mist reaches in the short time and predetermines atmospheric pressure, puts into use fast. Meanwhile, when the oxygen concentration of the mixed gas is too high (for example, greater than 40%), the compressed air unit 130 may provide the breathing chamber unit 140 with reduced pressure air to replace a portion of the gas quickly, so as to reduce the oxygen concentration, and control the oxygen concentration of the mixed gas in the breathing chamber unit 140 to be between 21% and 35%. It is noted that the compressed air unit 130 is isolated from the external environment during operation and does not absorb gas from the external environment.

Please note that the fire fighting respirator 10 of fig. 1 is only used to help understand the core idea of the present invention, and is not a limitation of the present invention, and it will be apparent to those skilled in the art that several modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Referring to fig. 2, fig. 2 is a block diagram of a fire fighting respirator according to a second embodiment of the present invention. The fire fighting respirator 20 of FIG. 2 is similar to the fire fighting respirator 10 of FIG. 1, except that the fire fighting respirator 20 of FIG. 2 further includes: a hydrogen storage bottle unit 210, a cooling unit 220, an exhalation hose 173, a three-way valve 230, and a residual gas purification unit 240. The hydrogen storage tank unit 210 is coupled to the oxyhydrogen hydrolysis unit 120, and is a recyclable unit, which can absorb and store hydrogen generated by the oxyhydrogen hydrolysis unit 120 under normal conditions (e.g. at room temperature) and release hydrogen to the external environment under specific conditions for recycling. Because the compressed air unit 130 generates hydrogen and oxygen during operation, the oxygen and the decompressed air are mixed for the user to breathe, and in order to avoid the hydrogen being discharged in a flammable and explosive environment, the hydrogen needs to be absorbed through the hydrogen storage bottle unit 210, and the fire-fighting respirator 20 is in a safe environment after being used, and then can release the hydrogen by using a specific device.

The cooling unit 220 is coupled between the breath bin unit 140 and the inhalation hose 171, and is used for reducing the temperature of the mixed gas below a default temperature. Since the body with the excessively high temperature will cause discomfort to the human body, the cooling unit 220 can reduce the temperature of the mixed gas to below 40 ℃, thereby avoiding the discomfort caused by the excessively high temperature gas to the human body.

Note that the three-way valve 230 is coupled between the inhalation hose 171, the breathing hose 172, and the exhalation hose 173, and when a user inhales, the three-way valve 230 introduces the mixture gas from the inhalation hose 171 into the breathing hose 172 to provide the mixture gas to the user, and when the user exhales, the three-way valve 230 introduces the residual gas from the breathing hose 172 into the exhalation hose 173, and the exhalation hose 173 discharges the residual gas exhaled by the user. The residual air purifying unit 240 is coupled between the exhalation hose 173 and the breath bin unit 140, and is used for absorbing carbon dioxide and moisture in the residual air to generate purified residual air, and providing the purified residual air to the breath bin unit 140 for residual air recycling. Generally, the concentration of carbon dioxide in the respiratory chamber unit 140 will be controlled to be less than 1%, but this is not a limitation of the present invention. In the present embodiment, the breath chamber unit 140 mixes the oxygen, the reduced pressure air and the purified residual air to generate a mixed gas, which is provided to the user.

Referring to fig. 3, fig. 3 is a block diagram of a fire fighting respirator according to a third embodiment of the present invention. The firefighting respirator 30 of FIG. 3 is similar to the firefighting respirator 20 of FIG. 2, except that the firefighting respirator 30 of FIG. 3 further comprises: a first check valve 311, a second check valve 312, a third check valve 313, a fourth check valve 314, a fifth check valve 315, a man-machine operation unit 320, a head-up display 330, and a battery unit 340. The first check valve 311 is coupled between the oxyhydrogen hydrolysis unit 120 and the breathing chamber unit 140, and allows oxygen to flow from the oxyhydrogen hydrolysis unit 120 into the breathing chamber unit 140 in one direction. The second one-way valve 312 is coupled between the compressed air unit 130 and the breath bin unit 140, allowing one-way flow of reduced pressure air from the compressed air unit 130 into the breath bin unit 140. The third check valve 313 is coupled between the residual air purification unit 240 and the breath bin unit 140, allowing the purified residual air to flow from the residual air purification unit 240 into the breath bin unit 140 in one direction. The fourth check valve 314 is coupled between the cooling unit 220 and the suction hose 171, and allows the mixed gas to flow from the cooling unit 220 into the suction hose 171 in one direction. The fifth check valve 315 is coupled between the exhalation hose 173 and the residual air purification unit 240, and allows a one-way flow of air from the exhalation hose 173 into the residual air purification unit 240.

Note that the check valve is also called a check valve, and the like, and is mainly used for preventing reverse flow of compressed air in a pneumatic system or preventing reverse flow of oil in a hydraulic system. Therefore, through the arrangement of the first check valve 311, the second check valve 312 and the third check valve 313, only the oxygen, the depressurized air and the purified residual gas are allowed to flow into the breathing chamber unit 140 in one direction, and the mixed gas is prevented from flowing back into the oxyhydrogen hydrolysis unit 120, the compressed air unit 130 and the residual gas purification unit 240 from the breathing chamber unit 140. In addition, the fourth check valve 314 in the present embodiment may also be referred to as a suction valve, which can prevent the mixture gas from flowing backward from the suction hose 171 into the cooling unit 220; the fifth one-way valve 315, which may also be referred to as an exhalation valve, prevents the residual air from flowing back from the residual air purification unit 240 into the exhalation hose 173, thereby forming a closed and safe breathing cycle system.

In the present embodiment, the human-machine operation unit 320 is used for providing functions such as power on/off, parameter display, system alarm …, for example, the sensor 150 can be used to monitor the working status of the whole fire-fighting respirator 30, and provide various parameter display and sound and light alarm functions through the display screen, lights, speaker …, etc. of the human-machine operation unit 320. The head-up display 330 is used for displaying a plurality of parameters, wherein the plurality of parameters includes at least one of voltage, pressure, temperature, oxygen concentration, water amount and remaining operation time, which can be set according to actual requirements. Generally, the heads-up display 330 is disposed on the respiratory mask 180 near the front of the eyes of the user. Battery unit 340 includes a plurality of battery packs for providing electrical support to fire fighting respirator 30. Please note that the plurality of battery packs are connected in series, the plurality of battery packs adopt explosion-proof battery units, each battery pack is independently charged and discharged, even if a single battery pack fails, the overall work is not affected, and the safety characteristic requirements of the explosion-proof battery are met. In addition, the plurality of battery packs of the battery unit 440 may be charged, discharged, disconnected, and the like, respectively, by the electronic control unit 160 through different control line terminals (not shown).

The utility model discloses a fire control respirator 10/20/30 is an absolute pressure formula oxygen respirator, especially an adopt fire control respirator of oxygen generation technique of hydrolysising oxyhydrogen, and its theory of operation describes as follows: the residual air exhaled by the user sequentially passes through the breathing mask 180, the breathing hose 172, the three-way valve 230, the exhalation hose 173, and the fifth check valve 315 (i.e., the exhalation valve), enters the residual air purification unit 390, and is sent back to the breathing chamber unit 140 through the third check valve 313 after the residual air purification unit 390 absorbs water vapor and carbon dioxide. Meanwhile, the oxyhydrogen hydrolysis unit 120 supplies oxygen to the breathing chamber unit 140 through the first check valve 311 under the control of the electronic control unit 160. The purified residual gas generated by the residual gas purification unit 390, the oxygen generated by the oxyhydrogen hydrolysis unit 120 and the decompressed air generated by the compressed air unit 130 are mixed in the breathing bin unit 140 to generate a mixed gas with an oxygen content ranging from 21% to 35% (less than 40%), and the mixed gas passes through the cooling unit 220, the breathing hose 171, the fourth one-way valve 314 (namely the breathing valve), the three-way valve 230, the breathing hose 172 and the breathing mask 180 to supply air to a user.

Please note that in the embodiment of the present invention, the fire-fighting respirator 10/20/30 is isolated from the external environment during operation and does not absorb the gas in the external environment.

Borrow by above technical scheme, the beneficial effects of the utility model are as follows: the utility model discloses a fire control respirator 10/20/30 utilizes the characteristic of compressed air decompression gassing fast, when beginning to use, can be so that in fire control respirator 10/20/30's the inner line, breathing gas reaches in the short time and predetermines atmospheric pressure, comes into operation fast. When the oxygen concentration is too high, the purpose of reducing the oxygen concentration is achieved by supplementing compressed air and purifying residual air. The utility model discloses a fire control respirator is applicable to a fire control respirator that adopts the oxyhydrogen oxygen system oxygen technique of hydrolysising, mainly in the closed absolute pressure respirator that provides oxygen with the oxyhydrogen unit of hydrolysising, adjustment oxygen concentration to when oxygen concentration is too high, reduce oxygen concentration, be used for preventing that oxygen concentration is too high in the use, arouse the oxygen intoxication accident. Meanwhile, the temperature of the mixed gas is reduced to be below 40 ℃ by adopting an electronic cooling technology, so that the discomfort of the gas with overhigh temperature to a human body is avoided.

The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims (10)

1. A fire fighting respirator (10, 20, 30) characterized in that the fire fighting respirator (10, 20, 30) comprises:

a water storage unit (110) for storing purified water;

a hydrolyzed hydrogen and oxygen unit (120), coupled to the water storage unit (110), for decomposing the purified water to generate hydrogen and oxygen by a hydrolyzed hydrogen and oxygen generation technique;

a compressed air unit (130) for rapidly depressurizing and deflating the compressed air to generate depressurized air;

a breathing chamber unit (140), coupled to the oxyhydrogen hydrolysis unit (120) and the compressed air unit (130), for mixing the oxygen and the depressurized air to generate a mixed gas;

a sensor (150) for detecting a pressure and an oxygen concentration of the mixed gas in the breath bin unit (140);

an electronic control unit (160), coupled to the oxyhydrogen hydrolysis unit (120), the compressed air unit (130), the breathing chamber unit (140), and the sensor (150), for controlling the oxygen and the reduced-pressure air to enter the breathing chamber unit (140) according to the oxygen concentration and the pressure detected by the sensor (150) so that the pressure of the mixed gas reaches a preset pressure and the oxygen concentration of the mixed gas reaches a preset oxygen concentration;

an inspiratory hose (171) coupled to the breath bin unit (140) for conveying the mixed gas;

a breathing hose (172) for providing the mixed gas to a user; and

a breathing mask (180) coupled to the breathing hose (172) for the user to wear on the face.

2. The fire fighting respirator (10, 20, 30) of claim 1, wherein the hydro lyzed hydrogen and oxygen unit (120) is comprised of a plurality of oxygen generation modules in parallel, each oxygen generation module operating independently.

3. The firefighting respirator (10, 20, 30) of claim 1, wherein the firefighting respirator (10, 20, 30) further comprises:

a hydrogen storage tank unit (210), coupled to the oxyhydrogen hydrolysis unit (120), for absorbing and storing the hydrogen generated by the oxyhydrogen hydrolysis unit (120) at normal temperature and releasing the hydrogen to the external environment in a non-combustible, non-explosive environment.

4. The firefighting respirator (10, 20, 30) of claim 1, wherein the firefighting respirator (10, 20, 30) further comprises:

a cooling unit (220) coupled between the breath bin unit (140) and the inspiratory hose (171) for reducing the temperature of the mixed gas below a predetermined temperature.

5. The firefighting respirator (10, 20, 30) of claim 4, wherein the firefighting respirator (10, 20, 30) further comprises:

an exhalation hose (173) for exhausting a residual air exhaled by the user;

a three-way valve (230) coupled between the inhalation hose (171), the breathing hose (172), and the exhalation hose (173), wherein the three-way valve (230) directs the mixed gas from the inhalation hose (171) into the breathing hose (172) to provide the mixed gas to the user when the user inhales, and the three-way valve (230) directs the residual gas from the breathing hose (172) into the exhalation hose (173) when the user exhales; and

an residual gas purification unit (240) coupled between the exhalation hose (173) and the breath bin unit (140) for absorbing carbon dioxide and moisture in the residual gas to generate a purified residual gas to be supplied to the breath bin unit (140);

wherein the breathing chamber unit (140) mixes the oxygen, the reduced pressure air and the purified residual gas to generate the mixed gas.

6. The firefighting respirator (10, 20, 30) of claim 5, wherein the firefighting respirator (10, 20, 30) further comprises:

a first one-way valve (311) coupled between the oxyhydrogen hydrolysis unit (120) and the respiratory cartridge unit (140) for allowing one-way flow of the oxygen from the oxyhydrogen hydrolysis unit (120) into the respiratory cartridge unit (140);

a second one-way valve (312) coupled between the compressed air unit (130) and the breath bin unit (140) for permitting one-way flow of the reduced pressure air from the compressed air unit (130) into the breath bin unit (140); and

a third one-way valve (313) coupled between the residual air purification unit (240) and the breath chamber unit (140) to allow the purified residual air to flow from the residual air purification unit (240) into the breath chamber unit (140) in one way.

7. The firefighting respirator (10, 20, 30) of claim 6, wherein the firefighting respirator (10, 20, 30) further comprises:

a fourth check valve (314) coupled between the cooling unit (220) and the suction hose (171) to allow the mixed gas to flow from the cooling unit (220) into the suction hose (171) in one direction; and

a fifth one-way valve (315) coupled between the exhalation hose (173) and the residual air purification unit (240) for allowing the residual air to flow from the exhalation hose (173) into the residual air purification unit (240) in one direction.

8. The firefighting respirator (10, 20, 30) of claim 1, wherein the firefighting respirator (10, 20, 30) further comprises:

a man-machine operation unit (320) for providing the functions of startup and shutdown, parameter display and system alarm; and

a head-up display (330) for displaying a plurality of parameters;

wherein the plurality of parameters include at least one of voltage, pressure, temperature, oxygen concentration, water amount, and remaining operating time.

9. The firefighting respirator (10, 20, 30) of claim 1, wherein the firefighting respirator (10, 20, 30) further comprises:

a battery unit (340) including a plurality of battery packs for providing electrical support to the fire fighting respirators (10, 20, 30);

the battery packs are connected in series, the battery packs adopt explosion-proof battery units, and each battery pack is independently charged and discharged.

10. Fire fighting respirator (10, 20, 30) according to any of claims 1 to 9, wherein the preset oxygen concentration is controlled between 21% and-35%.

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