CN212593562U

CN212593562U - Oxygen balancing device

Info

Publication number: CN212593562U
Application number: CN201922498267.9U
Authority: CN
Inventors: 何异; 朱森祥; 黄芳
Original assignee: Ningbo Baozhong Emergency Technology Co ltd
Current assignee: Ningbo Baozhong Emergency Technology Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-02-26
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses an oxygen balancing unit. The oxygen balancing device comprises: the device comprises a hydrolysis oxyhydrogen generator, an air supply unit, a breathing chamber, a sensor, an electronic control unit and an air suction hose. The hydrolysis oxyhydrogen generator adopts hydrolysis oxyhydrogen oxygen generation technology to decompose water into hydrogen and oxygen. The air supply unit provides reduced pressure air. The breathing chamber mixes the oxygen and the reduced pressure air to produce a mixed gas. The sensor detects the oxygen concentration of the mixed gas in the breathing chamber. The electronic control unit controls the air inflow of oxygen and reduced pressure air into the breathing chamber according to the oxygen concentration detected by the sensor. The suction hose provides the mixed gas to a user. The utility model discloses an oxygen balancing unit is applicable to a fire control respirator that adopts the oxyhydrogen oxygen generation technique of hydrolysising, mainly in the closed absolute pressure respirator that provides oxygen with the oxyhydrogen generator of hydrolysising, adjusts 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 intoxication oxygen accident.

Description

Oxygen balancing device

Technical Field

The utility model relates to a respirator technical field, more specifically relate to an oxygen balancing unit for respirator that adopts oxygen generation technique of hydrolysising oxyhydrogen.

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 breathing mask 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 respirators cannot enable the respirators to reach the gas pressure for normal use in a short time. Therefore, there is a need to provide a new oxygen balance device for a respirator to solve the above 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 an oxygen balancing unit for a respirator, which is mainly used for preventing the oxygen concentration from being too high in the using process and causing the oxygen intoxication accident in a closed absolute pressure respirator which provides oxygen by a hydrolysis oxyhydrogen generator.

In order to achieve the above object, an embodiment of the present invention discloses an oxygen balancing device, including: the device comprises a hydrolysis oxyhydrogen generator, an air supply unit, a breathing chamber, a sensor, an electronic control unit and an air suction hose. The hydrolysis oxyhydrogen generator is used for decomposing water into hydrogen and oxygen by adopting a hydrolysis oxyhydrogen oxygen generation technology. The air supply unit is used for supplying reduced pressure air. The breathing chamber is coupled with the hydrolysis oxyhydrogen generator and the air supply unit and is used for mixing oxygen and reduced pressure air to generate mixed gas. The sensor is used for detecting the oxygen concentration of the mixed gas in the breathing chamber. The electronic control unit is coupled with the hydrolysis oxyhydrogen generator, the air supply unit, the breathing chamber and the sensor and is used for controlling the air inflow of oxygen and pressure-reduced air entering the breathing chamber according to the oxygen concentration detected by the sensor. The breathing hose is coupled to the breathing chamber and is used for providing the mixed gas for a user.

Optionally, the air supply unit is a decompressor-containing air supply unit for rapidly decompressing and deflating the compressed air to generate decompressed air.

Optionally, the sensor is further configured to detect a pressure of the mixed gas in the breathing chamber, and the electronic control unit controls an intake amount of oxygen and the pressure-reduced air entering the breathing chamber according to the oxygen concentration and the pressure detected by the sensor, 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.

Optionally, the oxygen balancing apparatus further comprises: the first one-way valve is coupled between the hydrolysis oxyhydrogen generator and the breathing chamber and allows oxygen to flow into the breathing chamber from the hydrolysis oxyhydrogen generator in a one-way manner; and a second one-way valve coupled between the air supply unit and the breathing chamber for allowing the reduced pressure air to flow from the air supply unit into the breathing chamber in one way.

Optionally, the oxygen balancing apparatus further comprises: an electrically controlled air supply valve coupled between the air supply unit and the second check valve; when the oxygen concentration of the mixed gas is detected to be greater than a first threshold value, the electronic control unit opens the electronic control gas supply valve to allow the reduced pressure air to flow into the breathing chamber through the second one-way valve; and when the oxygen concentration of the mixed gas is detected to be less than or equal to the first threshold value, the electronic control unit closes the electronic control gas supply valve to prohibit the decompressed air from flowing into the breathing chamber through the second one-way valve.

Optionally, the oxygen balancing apparatus further comprises: the expiration hose is used for exhausting the residual air expired by the user; and the residual air purifying device is coupled with the expiration hose and used for absorbing carbon dioxide and water vapor in the residual air to generate purified residual air and supplying the purified residual air to the breathing cabin.

Optionally, the oxygen balancing apparatus further comprises: and the third one-way valve is coupled between the residual air purification device and the breathing bin and allows purified residual air to flow into the breathing bin from the residual air purification device in a one-way mode.

Optionally, the oxygen balancing apparatus further comprises: an electrically controlled exhaust valve coupled to the breathing chamber; when the oxygen concentration of the mixed gas is detected to be greater than a first threshold value, the electronic control unit opens the electronic control exhaust valve to allow the mixed gas to be exhausted out of the breathing chamber; when the oxygen concentration of the mixed gas is detected to be less than or equal to the first threshold value, the electronic control unit closes the electronic control exhaust valve to prohibit the mixed gas from being exhausted out of the breathing chamber.

Optionally, the oxygen balancing device is operatively isolated from the external environment and does not absorb gas from the external environment.

Alternatively, the oxygen balancing device is suitable for a fire-fighting breathing mask adopting the technology of hydrogen and oxygen hydrolysis oxygen generation.

Borrow by above technical scheme, the beneficial effects of the utility model are as follows: the utility model discloses an oxygen balancing unit utilizes the characteristic of compressed air decompression gassing of stepping down fast, when beginning to use, can be so that the internal pipeline of respirator, 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 discharging mixed gas and supplementing compressed air. The utility model discloses an oxygen balancing unit is applicable to a fire control respirator that adopts the oxyhydrogen oxygen generation technique of hydrolysising, mainly in the closed absolute pressure respirator that provides oxygen with the oxyhydrogen generator of hydrolysising, adjusts 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 intoxication oxygen accident.

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 an oxygen balance device according to a first embodiment of the present invention.

Fig. 2 is a block diagram of an oxygen balance device according to a second embodiment of the present invention.

Fig. 3 is a block diagram of an oxygen balance device according to a third embodiment of the present invention.

Reference numerals of the above figures: 10. 20, 30, an oxygen balancing device; 110. a hydrolysis oxyhydrogen generator; 120. an air supply unit; 130. a breathing chamber; 140. a sensor; 150. an electronic control unit; 160. a suction hose; 360. an expiratory hose; 271. a first check valve; 272. a second one-way valve; 273. a third check valve; 280. an electrically controlled gas supply valve; 380. an electrically controlled exhaust valve; 390. residual gas purification device.

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 an oxygen balance device according to a first embodiment of the present invention. As shown in fig. 1, oxygen balancing apparatus 10 includes, but is not limited to, a hydrolysis oxyhydrogen generator 110, an air supply unit 120, a breathing chamber 130, a sensor 140, an electronic control unit 150, and an inspiratory hose 160. The hydrolysis oxyhydrogen generator 110 is used for decomposing water into hydrogen and oxygen by using a hydrolysis oxyhydrogen oxygen generation technology. The air supply unit 120 serves to supply reduced pressure air. The breathing chamber 130 is coupled to the hydrolysis oxyhydrogen generator 110 and the air supply unit 120, and is used for mixing oxygen and reduced-pressure air to generate a mixed gas. The sensor 140 is used to detect the oxygen concentration of the mixed gas in the breathing chamber 130. The electronic control unit 150 is coupled to the hydrolysis oxyhydrogen generator 110, the air supply unit 120, the breathing chamber 130 and the sensor 140, and is used for controlling the amount of oxygen and the intake air of the reduced pressure air entering the breathing chamber 130 according to the oxygen concentration detected by the sensor 140. The inspiratory hose 160 is coupled to the breath chamber 130 for providing the mixed gas to a user.

In one possible embodiment, the air supply unit 120 may be a decompressor-equipped air supply unit for rapidly decompressing and deflating the compressed air to generate decompressed air. Furthermore, the sensor 140 can be used to detect the pressure of the mixed gas in the breathing chamber 130, and the electronic control unit 150 can control the amount of the oxygen and the reduced pressure air entering the breathing chamber 130 according to the oxygen concentration and the pressure detected by the sensor 140, so as to make the pressure of the mixed gas reach a preset pressure and make the oxygen concentration of the mixed gas reach a preset oxygen concentration. By utilizing the characteristic of rapid pressure reduction and deflation of compressed air, when the respirator is used, the mixed breathing gas can reach the set air pressure in a short time in the internal pipeline of the respirator, and the respirator can be put into use quickly.

Please note that the oxygen balance device 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 a plurality of 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 an oxygen balance device according to a second embodiment of the present invention. The oxygen balance device 20 of fig. 2 is similar to the oxygen balance device 10 of fig. 1, but differs therefrom in that the oxygen balance device 20 of fig. 2 further comprises: a first check valve 271, a second check valve 272 and an electrically controlled supply valve 280. The first one-way valve 271 is coupled between the hydrolysis oxyhydrogen generator 110 and the breathing chamber 130, and allows oxygen to flow from the hydrolysis oxyhydrogen generator 110 into the breathing chamber 130 in one way. A second one-way valve 272, coupled between the air supply unit 120 and the breathing chamber 130, allows for one-way flow of reduced pressure air from the air supply unit 120 into the breathing chamber 130. The electrically controlled supply valve 280 is coupled between the air supply unit 120 and the second check valve 272; when the oxygen concentration of the mixed gas is detected to be greater than a first threshold, the electronic control unit 150 opens the electrically controlled air supply valve 280 to allow the depressurized air to flow into the breathing chamber 130 through the second check valve 272; when the oxygen concentration of the mixed gas is detected to be less than or equal to the first threshold, the electronic control unit 150 closes the electrically controlled air supply valve 280 to prohibit the depressurized air from flowing into the breathing chamber 130 through the second check valve 272.

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 one-way valve 271 and the second one-way valve 272, only oxygen and depressurized air can be allowed to flow into the breathing chamber 130 in one direction, and the mixed gas is prevented from flowing back into the hydrolysis oxyhydrogen generator 110 and the air supply unit 120 from the flowing-into breathing chamber 130.

In this embodiment, the ecu 150 may determine whether to open or close the electronically controlled supply valve 280 based on the oxygen concentration of the mixed gas detected by the sensor 140. 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 150 opens the electronically controlled supply valve 280 to supply the depressurized air to the respiration chamber 130, so as to decrease 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 150 closes the electrically controlled supply valve 280 to stop the reduced pressure air from entering the respiration chamber 130, so as to maintain the oxygen concentration of the mixed gas. In other words, the oxygen balancing device 20 can adjust the oxygen concentration of the mixed gas by using the sensor 140, the electronic control unit 150 and the electrically controlled gas supply valve 280, and reduce the oxygen concentration when the oxygen concentration is too high, so as to prevent the oxygen concentration from being too high during use and causing an oxygen intoxication accident.

Referring to fig. 3, fig. 3 is a block diagram of an oxygen balance device according to a third embodiment of the present invention. The oxygen balancing apparatus 30 of fig. 3 is similar to the oxygen balancing apparatus 20 of fig. 2, except that the oxygen balancing apparatus 30 of fig. 3 further comprises: an expiratory hose 360, a residual air purification device 390, a third one-way valve 273 and an electrically controlled exhaust valve 380. The exhalation hose 360 is used to discharge the residual air exhaled by the user. The residual air purifying device 390 is coupled to the exhalation hose 360 for absorbing carbon dioxide and moisture in the residual air to generate purified residual air and providing the purified residual air to the breath cabin 130. A third one-way valve 273 is coupled between the residual air purification device 390 and the breath compartment 130, allowing one-way flow of purified residual air from the residual air purification device 390 into the breath compartment 130. The electrically controlled exhaust valve 380 is coupled to the breathing chamber 130, wherein when the oxygen concentration of the mixed gas is detected to be greater than the first threshold, the electronic control unit opens the electrically controlled exhaust valve 380 to allow the mixed gas to exit the breathing chamber 130; when the oxygen concentration of the mixed gas is detected to be less than or equal to the first threshold, the electronic control unit 150 closes the electrically controlled exhaust valve 380 to prohibit the mixed gas from exiting the breathing chamber 130.

In this embodiment, the ecu 150 may determine whether to open or close the electronically controlled exhaust valve 380 based on the oxygen concentration of the mixed gas detected by the sensor 140. For example, when the oxygen concentration of the mixture is detected to be too high (e.g., greater than the first threshold), the ecu 150 opens the electrically controlled exhaust valve 380 to allow the mixture to exit the breathing chamber 130, so as to reduce the oxygen concentration of the mixture; when the oxygen concentration of the mixture is detected to be normal (e.g., less than the first threshold), the electronic control unit 150 closes the electrically controlled exhaust valve 380 to stop the mixture from exiting the breathing chamber 130, so as to maintain the oxygen concentration of the mixture. In other words, the oxygen balance device 30 can adjust the oxygen concentration of the mixed gas by using the sensor 140, the electronic control unit 150 and the electrically controlled exhaust valve 380, and when the oxygen concentration is too high, the oxygen concentration is reduced by exhausting the mixed gas and supplementing compressed air, so as to prevent the oxygen concentration from being too high during the use process, which causes an oxygen intoxication accident.

The utility model discloses an oxygen balancing unit 10/20/30 is the core component of absolute pressure formula oxygen respirator (for example: a fire control respirator that adopts the oxygen preparation technique of oxyhydrogen of hydrolysising), and its theory of operation describes as follows: when the oxygen balancing device 10/20/30 is activated, the electronically controlled supply valve 280 is manually opened to allow the air supply unit 120 to provide reduced pressure air to the breathing chamber 130 through the second one-way valve 272. The electronic control unit 150 then determines whether to continue opening or closing the electronically controlled supply valve 280 based on the pressure of the gas in the breathing chamber 130 and the oxygen concentration detected by the sensor 140. When the insufficient pressure of the gas in the breath chamber 130 is detected, the electrically controlled gas supply valve 280 is continuously opened, and the air supply unit 120 continuously supplies the reduced pressure air to the breath chamber 130, until the pressure of the gas in the breath chamber 130 reaches the predetermined pressure, the electrically controlled gas supply valve 280 is closed, and the initial gas filling of the breath chamber 130 is completed. Note that when the air supply unit 120 is a decompressor-equipped air supply unit, the compressed air can be quickly decompressed and discharged to generate decompressed air. Utilize the characteristic of compressed air decompression gassing fast, when beginning to use, can be so that the internal line of respirator, the mist reaches preset atmospheric pressure in the short time, puts into use fast.

During the use of the oxygen balancing device 10/20/30, the mixture gas enters the human body through the inhaling hose 160, the residual gas exhaled from the human body is exhausted through the exhaling hose 360, and after absorbing water vapor and carbon dioxide through the residual gas purifying device 390, the residual gas is sent back to the breath chamber 130 through the third one-way valve 273. Meanwhile, the hydrolysis oxyhydrogen generator 110 supplements the consumed oxygen to the breathing chamber 130 through the first one-way valve 271 under the control of the electronic control unit 150, and completes one cycle. In the process, oxygen consumed by respiration is provided by the hydrolysis oxyhydrogen generator 110, generated carbon dioxide and water vapor are absorbed by the residual gas purification device 390, the whole circulation system is in a sealed and positive pressure state, gas leakage inevitably exists, the content of oxygen slowly rises along with the lengthening of the service time, and when the oxygen concentration is greater than a certain value, adverse effect is generated on a human body, therefore, when the oxygen concentration is overhigh, part of mixed gas with high oxygen content is discharged through the electric control exhaust valve 390, and then part of reduced pressure air is supplemented through the electric control air supply valve 280 to reduce the oxygen concentration in the mixed gas.

Please note that, in the embodiment of the present invention, the oxygen balancing device 10/20/30 is isolated from the external environment during operation, and does not absorb the gas in the external environment.

In one possible embodiment, the oxygen balancing device 10/20/30 is adapted for use with a fire mask that utilizes hydro lyzed hydrogen oxygen generation technology.

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

1. An oxygen balancing device (10, 20, 30), characterized in that the oxygen balancing device (10, 20, 30) comprises:

a hydrolysis oxyhydrogen generator (110) for decomposing water into hydrogen and oxygen by using a hydrolysis oxyhydrogen oxygen generation technology;

an air supply unit (120) for supplying a reduced pressure air;

a breathing chamber (130) coupled to the oxyhydrogen generator (110) and the air supply unit (120) for mixing the oxygen and the reduced-pressure air to generate a mixed gas;

a sensor (140) for detecting an oxygen concentration of the gas mixture in the breathing chamber (130);

an electronic control unit (150), coupled to the hydrolysis oxyhydrogen generator (110), the air supply unit (120), the breathing chamber (130), and the sensor (140), for controlling the amount of intake of the oxygen and the depressurized air into the breathing chamber (130) according to the oxygen concentration detected by the sensor (140); and

an inspiratory hose (160) coupled to the breath chamber (130) for providing the mixed gas to a user.

2. The oxygen balancing device (10, 20, 30) of claim 1, wherein the air providing unit (120) is a de-pressurized air providing unit for rapid de-pressurization and deflation of a compressed air to generate the de-pressurized air.

3. The oxygen balancing apparatus (10, 20, 30) of claim 2, wherein the sensor (140) is further configured to detect a pressure of the mixture of gases in the breathing chamber (130), and the electronic control unit (150) controls the amount of the oxygen and the reduced pressure air entering the breathing chamber (130) according to the oxygen concentration and the pressure detected by the sensor (140) so that the pressure of the mixture of gases reaches a predetermined pressure and the oxygen concentration of the mixture of gases reaches a predetermined oxygen concentration.

4. The oxygen balancing device (10, 20, 30) of claim 1, wherein the oxygen balancing device (10, 20, 30) further comprises:

a first one-way valve (271) coupled between the hydrolysis oxyhydrogen generator (110) and the respiratory chamber (130) for allowing one-way flow of the oxygen from the hydrolysis oxyhydrogen generator (110) into the respiratory chamber (130); and

a second one-way valve (272) coupled between the air supply unit (120) and the breathing chamber (130) for allowing one-way flow of the reduced pressure air from the air supply unit (120) into the breathing chamber (130).

5. The oxygen balancing device (10, 20, 30) of claim 4, wherein the oxygen balancing device (10, 20, 30) further comprises:

an electrically controlled supply air valve (280) coupled between the air supply unit (120) and the second one-way valve (272);

wherein, when it is detected that the oxygen concentration of the mixed gas is greater than a first threshold, the electronic control unit (150) opens the electrically controlled gas supply valve to allow the depressurized air to flow into the breathing chamber (130) through the second one-way valve (272); and when the oxygen concentration of the mixed gas is detected to be less than or equal to the first threshold value, the electronic control unit (150) closes the electronic control gas supply valve (280) to prohibit the decompressed air from flowing into the breathing chamber (130) through the second one-way valve (272).

6. The oxygen balancing device (10, 20, 30) of claim 5, wherein the oxygen balancing device (10, 20, 30) further comprises:

an exhalation hose (360) for exhausting a residual air exhaled by the user; and

an exhaust gas purification device (390) coupled to the exhalation hose (360) for absorbing carbon dioxide and moisture in the exhaust gas to generate a purified exhaust gas to be supplied to the breath chamber (130).

7. The oxygen balancing device (10, 20, 30) of claim 6, wherein the oxygen balancing device (10, 20, 30) further comprises:

a third one-way valve (273) coupled between said residual air purification device (390) and said breath compartment (130) allowing one-way flow of said purified residual air from said residual air purification device (390) into said breath compartment (130).

8. The oxygen balancing device (10, 20, 30) of claim 7, wherein the oxygen balancing device (10, 20, 30) further comprises:

an electrically controlled exhaust valve (380) coupled to the breath chamber (130);

wherein, when it is detected that the oxygen concentration of the mixed gas is greater than a first threshold, the electronic control unit (150) opens the electronically controlled exhaust valve (380) to allow the mixed gas to exit the breathing chamber (130); when the oxygen concentration of the mixed gas is detected to be less than or equal to the first threshold value, the electronic control unit (150) closes the electronic control exhaust valve (380) to prohibit the mixed gas from being exhausted out of the breathing chamber (130).

9. The oxygen balancing device (10, 20, 30) of claim 1, wherein the oxygen balancing device (10, 20, 30) is operatively isolated from the external environment and does not absorb gas from the external environment.