CN214158316U - Oxygen respirator - Google Patents
Oxygen respirator Download PDFInfo
- Publication number
- CN214158316U CN214158316U CN202023335776.9U CN202023335776U CN214158316U CN 214158316 U CN214158316 U CN 214158316U CN 202023335776 U CN202023335776 U CN 202023335776U CN 214158316 U CN214158316 U CN 214158316U
- Authority
- CN
- China
- Prior art keywords
- oxygen
- breathing circuit
- regulating valve
- electromagnetic flow
- flow regulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The utility model discloses an oxygen respirator, this oxygen respirator includes: an oxygen cylinder provided with a cylinder valve and containing oxygen therein; a pressure reducer connected downstream of the oxygen cylinder and configured to reduce a pressure of oxygen from the oxygen cylinder; an electromagnetic flow regulating valve disposed in the automatic gas supply path and connected to the pressure reducer for supplying oxygen to the breathing circuit; the detector is connected to the breathing circuit and detects the breathing circuit in real time to generate a corresponding detection value; and a control unit electrically connected with the electromagnetic flow regulating valve and communicating with the detector to receive a signal indicating the detected value from the detector, wherein the control unit is configured to compare the detected value with a predetermined value and regulate the opening degree of the electromagnetic flow regulating valve based on the comparison result. The oxygen respirator can detect the oxygen use condition of a user in real time and automatically adjust the oxygen supply amount according to the requirement based on the oxygen use condition, so that the use safety is ensured, and the use time of the oxygen respirator is prolonged.
Description
Technical Field
The application relates to the field of safety rescue equipment, in particular to an oxygen respirator capable of automatically supplying oxygen as required.
Background
In the fields of fire fighting, coal mines and the like, when an emergency occurs, the air in the environment is mixed with a large amount of toxic and harmful gas and dust, which makes the search and rescue environment extremely dangerous. Therefore, in the search and rescue process, in order to guarantee the life safety of the rescuers, safe and reliable breath needs to be provided for the rescuers. As common rescue equipment, the oxygen respirator is widely applied to rescue tasks such as fire rescue, mine rescue and the like so as to ensure normal breathing of rescuers.
Conventional oxygen respirators are normally supplied in a metered dose, i.e. at a standard constant flow rate, the most common type of oxygen-metered respirator being used for a period of about 4 hours under standard operating conditions.
However, the breathing conditions of the conventional oxygen respirator are constant, and the breathing requirements of rescuers under different working conditions cannot be met. In practical applications, rescuers often have situations where different oxygen supplies are needed. For example, if the user is performing a high rescue mission or heavy physical labor, a greater oxygen demand is required; if the user takes a temporary rest or walks slowly, etc., the demand for oxygen is relatively small.
Therefore, in view of the above situation, there is a need for a novel oxygen respirator capable of supplying oxygen on demand, which can adjust the oxygen supply amount automatically in real time according to the actual oxygen demand of the user to ensure the safety and comfort of the user.
SUMMERY OF THE UTILITY MODEL
The main object of this application is to provide an oxygen respirator, aim at solving the problem that exists in the prior art can not adjust the oxygen supply volume as required according to breathing demand is automatic.
In order to achieve the above object, according to one aspect of the present application, there is provided an oxygen respirator comprising: an oxygen cylinder provided with a cylinder valve and containing oxygen therein; a pressure reducer connected downstream of the oxygen cylinder and configured to reduce a pressure of oxygen from the oxygen cylinder; an electromagnetic flow regulating valve disposed in the automatic gas supply path and connected to the pressure reducer for supplying oxygen to the breathing circuit; the detector is connected to the breathing circuit and is used for detecting the oxygen state in the breathing circuit in real time to generate a corresponding detection value; and a control unit electrically connected with the electromagnetic flow regulating valve and communicating with the detector to receive a signal indicating the detection value from the detector, wherein the control unit is configured to compare the detection value with a predetermined value and adjust the opening degree of the electromagnetic flow regulating valve based on the comparison result.
This design of oxygen respirator can be through the oxygen state in the detector real-time detection breathing circuit to the real-time supervision user breathes the condition, adjusts electromagnetic flow control valve's aperture and automatic supply oxygen according to actual breathing demand, and this makes the breathing condition that the oxygen respirator provided for the rescue personnel more accord with natural condition, and the reliability greatly increased of oxygen respirator uses safelyr, and can also greatly prolong the live time of equipment, improves rescue efficiency.
Further, the breathing circuit comprises CO2An absorption tank, a breathing bag and a cooling tank, wherein the gas exhaled by the user first passes through the CO2The absorption tank gets into after getting rid of carbon dioxide the gasbag, when the user breathes in, gaseous follow gasbag gets into the cooling tank cools off, later gets into user's respiratory, thereby realizes breathing circuit and user's gas exchange.
Setting CO in the breathing circuit2The absorption tank can effectively absorb CO in the exhaled air of the user2And the rest of the gas (including the rest of the oxygen) is let into the breathing bag, which further supplies the user with oxygen due to the passage of CO2The gas temperature is higher behind the absorption tank, and in order to avoid the user to receive the injury, set up the cooling tank so that cool off high temperature gas, later will cool offIs supplied to the user. The breathing circuit is capable of effecting gas exchange efficiently during use.
Further, the detector is connected to the CO2The input end of the absorption tank.
Due to CO2The absorption tank is the starting point of the respiration cycle, and the detector is connected with CO2The input end of the absorption tank can most effectively and accurately realize the monitoring of the oxygen use state.
Further, the detector comprises an oxygen sensor arranged to sense an oxygen concentration in the breathing circuit, the control unit decreasing the opening of the electromagnetic flow regulating valve when the oxygen concentration sensed by the oxygen sensor is higher than a predetermined value and otherwise increasing the opening of the electromagnetic flow regulating valve.
The detector accessible oxygen sensor detects the oxygen suppliment state in the breathing circuit, and oxygen sensor can detect the oxygen concentration in the breathing circuit directly perceivedly to directly realize the regulation to electromagnetic flow control valve's aperture via oxygen concentration, and then adjust the oxygen supply volume in the breathing circuit.
Further, the detector comprises a pressure sensor arranged to sense a gas pressure in the breathing circuit, the control unit decreasing the opening of the electromagnetic flow regulating valve when the gas pressure sensed by the pressure sensor is higher than a predetermined value and otherwise increasing the opening of the electromagnetic flow regulating valve.
The detector can also detect the oxygen supply state in the breathing circuit through the pressure sensor, the pressure sensor can sense the change of the pressure of the gas actually exhaled by the user, if the gas pressure is high, the oxygen in the breathing circuit is sufficient, the opening degree is reduced at the moment, and otherwise, the opening degree is increased.
Further, the detector comprises a flow sensor arranged to sense the gas flow in the breathing circuit, and the control unit increases the opening of the electromagnetic flow regulating valve when the gas flow sensed by the flow sensor is greater than a predetermined value, and otherwise decreases the opening of the electromagnetic flow regulating valve.
The detector can also detect the oxygen supply state in the breathing circuit through the flow sensor, the flow sensor can sense the gas flow in the breathing circuit, if the gas flow in the breathing circuit is large, the oxygen amount required by a user at present is large, the opening degree of the electromagnetic flow regulating valve is increased, and otherwise, the opening degree is reduced.
Further, the control unit is arranged to transmit a current signal to the electromagnetic flow regulating valve to control the opening of the electromagnetic flow regulating valve.
The current signal is a signal form of a commonly used control electromagnetic valve, and by supplying current signals with different magnitudes to the electromagnetic flow regulating valve, electromagnetic forces with different magnitudes can be generated correspondingly, and the internal mechanical structure of the electromagnetic flow regulating valve is further controlled by utilizing the electromagnetic force, so that the control of the opening degree is reliably realized.
Further, the electromagnetic flow regulating valve is a normally open type electromagnetic flow regulating valve.
Under extreme conditions such as system power shortage or trouble, the automatically regulated function of electromagnetism flow control valve is invalid, sets up electromagnetism flow control valve to normally open type for it can regard as constant flow valve to continue to use, thereby can continuously be for the user oxygen suppliment, guarantees user's safe handling.
Further, the oxygen respirator further comprises a sensor connected to the oxygen cylinder, the sensor being configured to sense the opening of the cylinder valve and generate a high-pressure signal based on the opening of the cylinder valve, wherein the control unit controls the electromagnetic flow regulating valve to open by 100% of an opening degree based on the high-pressure signal to perform a first pre-charging operation for a predetermined time to flow oxygen from the oxygen cylinder through the breathing circuit via the automatic gas supply path so as to discharge original gas in the breathing circuit.
The oxygen respirator is provided with the function of making a breath in advance, can carry out the operation of making a breath in advance and last predetermined time in the twinkling of an eye that oxygen cylinder valve opened, makes the oxygen in the oxygen cylinder flow through breathing circuit with great tolerance to reach and erode and remove the effect of the original gas in the breathing circuit, this can guarantee to make and keep higher oxygen concentration in the breathing circuit, thereby prevents to cause the injury or cause the discomfort to the user.
Further, the oxygen respirator further comprises a manual air supply device disposed in a manual air supply path for supplying oxygen to the breathing circuit, the manual air supply path being disposed in parallel with the automatic air supply path between the pressure reducer and the breathing circuit, wherein the manual air supply device is configured to: a) is manually actuated in the event of a failure of the electromagnetic flow control valve to perform a second pre-charging operation to flow oxygen from the oxygen cylinder through the breathing circuit via the manual gas supply path to vent pre-existing gas within the breathing circuit; and/or b) is manually actuated while the electromagnetic flow regulating valve is operating to perform an oxygen increasing operation to increase the supply of oxygen to the breathing circuit.
The manual air supply device is arranged, so that pre-inflation operation can be performed as an alternative under the condition that the automatic pre-inflation function is failed, so that original air in the breathing circuit is exhausted, and the manual air supply device can also supplement oxygen supply of the automatic air supply device, for example, the manual air supply device can be used for manually supplementing oxygen when a user feels that the oxygen is insufficient, so that more flexible use and wider application range of the oxygen respirator are realized. In addition, the manual air supply path and the automatic air supply path are arranged in parallel, so that the pipeline design is simplified, and materials are saved.
By applying the technical scheme of the application, the oxygen respirator can detect the breathing state of a user in real time through the detector and automatically supply oxygen according to actual breathing requirements by the control unit and the electromagnetic flow regulating valve, so that the breathing conditions provided by the oxygen respirator for rescuers are more consistent with natural conditions, the reliability of the oxygen respirator is greatly improved, the use is safer, and the harm to the user is avoided; and the service time of the equipment and the working time of the rescue workers on the rescue site can be greatly prolonged, the operation of the rescue workers in the using process is reduced, and the improvement of the rescue efficiency of the rescue workers is facilitated.
In addition, this oxygen respirator still has the function of making gas in advance, makes the oxygen of great tolerance flow through whole gas circuit system in the moment that the respirator starts, reaches to erode and discharges the effect of other original gases in the breathing circuit as far as possible to provide more comfortable use experience for the user. And the oxygen respirator is also provided with a manual air supply device, so that the manual pre-inflation function can be realized as an alternative under the condition that the automatic pre-inflation function fails, and the oxygen can be supplied when the oxygen demand is large.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
fig. 1 shows a schematic view of an oxygen respirator according to an embodiment of the present application.
Wherein the figures include the following reference numerals:
an oxygen respirator 1;
an oxygen cylinder 10 and a pressure reducer 11;
a sensor 20, a control unit 30, an electromagnetic flow regulating valve 40, a manual air supply device 50, and a detector 60;
CO2an absorption tank 70, a breathing bag 80, a cooling tank 90;
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
According to one aspect of the present application, there is provided an oxygen respirator comprising: an oxygen cylinder provided with a cylinder valve and containing oxygen therein; a pressure reducer connected downstream of the oxygen cylinder and configured to reduce a pressure of oxygen from the oxygen cylinder; an electromagnetic flow regulating valve disposed in the automatic gas supply path and connected to the pressure reducer for supplying oxygen to the breathing circuit; the detector is connected to the breathing circuit and detects the breathing circuit in real time to generate a corresponding detection value; and a control unit electrically connected with the electromagnetic flow regulating valve and communicating with the detector to receive a signal indicating the detection value from the detector, wherein the control unit is configured to compare the detection value with a predetermined value and adjust the opening degree of the electromagnetic flow regulating valve based on the comparison result.
Fig. 1 shows a schematic view of an oxygen respirator according to an embodiment of the present application.
Referring to fig. 1, an oxygen respirator 1 is disclosed, according to an embodiment of the present application. The oxygen respirator comprises an oxygen bottle 10, a pressure reducer 11 and an electromagnetic flow regulating valve 40. The oxygen cylinder 10 contains oxygen and is provided with a cylinder valve which can be opened or closed, the pressure reducer 11 is arranged at the downstream of the oxygen cylinder 10 and is connected with the oxygen cylinder, the oxygen cylinder 10 and the pressure reducer 11 are in a high-pressure area, the gas pressure is high, therefore, in order to avoid that the oxygen pressure leaving the oxygen cylinder 10 is too high to cause injury to a user, when the oxygen respirator is operated, the pressure reducer 11 can be used for reducing the pressure of the gas from the oxygen cylinder 10. An electromagnetic flow regulating valve 40 is connected downstream of the pressure reducer 11 and disposed in the automatic gas supply path so as to supply oxygen to the breathing circuit.
Also shown in FIG. 1 is a breathing circuit downstream of the electromagnetic flow control valve 40, which may include CO2 An absorption tank 70, a respiration bag 80, and a cooling tank 90, in which an automatic air supply path including the electromagnetic flow rate adjusting valve 40 is connectable to the CO2At the input of the canister 70 to supply oxygen from the oxygen cylinder 10 to the breathing circuit there. However, oxygen from the oxygen cylinder 10 may also enter the breathing circuit from other locations in the breathing circuit, such as directly from the breathing bag 80, without departing from the scope of the present application.
The breathing circuit cycles as follows. In using the oxygen respirator 1, the user 100 first wears the aerobic respirator so as to form a well-sealed breathing circulation system with the oxygen respirator. The gas comprising carbon dioxide exhaled by the user 100 first enters the CO through the exhalation path2An absorption tank 70 (i.e., the beginning of the breathing cycle) where carbon dioxide is absorbed after a chemical reaction, and then the remaining gas enters the resuscitation bag 80, which is now inflated; when the user inhalesThe gas in the resuscitation bag 80 (which is free of carbon dioxide) exits the resuscitation bag and enters the cooling tank 90 due to the presence of CO2The chemical reaction in the absorption tank 70 releases heat, so that the temperature of the gas entering the breathing bag 80 is high, and therefore, when the user inhales, the gas leaving the breathing bag needs to be cooled in the cooling tank 90 to the natural temperature before being inhaled by the user through the inhalation path, so as to avoid the injury of the user caused by the high temperature, and at this time, the breathing bag 80 is in a low gas state. The above process is the working process of the breathing circuit and the user for gas exchange. Wherein, be provided with two check valves respectively in the respirator that the user wore, one check valve sets up in the exhalation route, and another check valve sets up in the inhalation route.
In embodiments of the present application, oxygen respirator 1 may further include a detector 60 and a control unit 30 in communication with the detector. The detector 60 is connected to the breathing circuit for detecting in real time the oxygen usage status in the breathing circuit and generating a corresponding detection value. Preferably, the detector 60 is connected to the CO as the starting point of the breathing circuit2The input of the canister 70 to enable accurate detection of the oxygen status in the breathing circuit. However, the detector 60 may be connected at other locations in the breathing circuit without departing from the scope of the present application. The control unit 30, in addition to being in communication with the detector 60, may also be electrically connected to the electromagnetic flow control valve 40. This will be explained in further detail below.
For example, when the breathing circuit undergoes a plurality of gas exchange processes with the user 100, the oxygen therein is gradually consumed, the oxygen content in the breathing circuit is reduced, and the breathing bag 80 may be in an under-inflated state. At this time, the detector 60, which monitors the oxygen usage state in the breathing circuit in real time, generates a detection value reflecting the oxygen state, and feeds a signal indicating the detection value back to the control unit 30, which communicates with the detector, and the control unit, upon receiving the signal, compares the detection value with a predetermined value, and increases the opening degree of the electromagnetic flow regulating valve 40 according to the comparison result. Similarly, if the oxygen amount in the breathing circuit is excessive, the control unit 30 may control the electromagnetic flow regulating valve 40 to decrease its opening, thereby achieving automatic regulation of the actual oxygen demand of the user.
In one embodiment, the detector 60 may comprise an oxygen sensor, which may be arranged to sense in real time the presence of, in particular, CO in the breathing circuit2The oxygen concentration at the input of the canister 70 is absorbed and fed back to the control unit 30. When the oxygen concentration value sensed by the oxygen sensor is higher than a predetermined value, the control unit 30 may appropriately decrease the opening degree of the electromagnetic flow rate adjustment valve 40; when the oxygen concentration value sensed by the oxygen sensor is lower than a predetermined value, the control unit 30 controls the electromagnetic flow regulating valve 40 to increase the opening degree thereof.
In another embodiment, the detector 60 may comprise a pressure sensor arranged to sense in real time, in particular CO, in the breathing circuit2The gas pressure at the input of the canister 70 and the detected gas pressure value is fed back to the control unit 30. When the pressure value of the gas sensed by the pressure sensor is higher than a predetermined value, it indicates that the oxygen in the breathing circuit is excessive, and at this time, the control unit 30 may control the electromagnetic flow regulating valve 40 to reduce the opening degree thereof; on the contrary, when the gas pressure value sensed by the pressure sensor is lower than the predetermined value, it indicates that the oxygen in the breathing circuit is insufficient, and at this time, the control unit controls the electromagnetic flow regulating valve 40 to increase the opening degree thereof.
In yet another embodiment, the detector 60 comprises a flow sensor arranged to sense in the breathing circuit, in particular CO2The gas flow rate at the input of the canister 70 and the detected gas flow rate value is fed back to the control unit 30. When the gas flow sensed by the flow sensor is greater than the predetermined value, which indicates that the oxygen amount currently required by the user 100 is large, the control unit 30 may increase the opening of the electromagnetic flow regulating valve 40; on the contrary, if the gas flow sensed by the flow sensor is small, it indicates that the oxygen amount currently required by the user is small, and the control unit 30 may decrease the opening degree of the electromagnetic flow regulating valve 40.
Specifically, the control unit 30 may control the opening degree of the electromagnetic flow rate adjustment valve by transmitting a current signal to the electromagnetic flow rate adjustment valve 40. Before the oxygen respirator 1 is used, the electronic components are first energized. The detector 60 detects the oxygen state in the breathing circuit in real time and outputs a signal indicating the detected value to the control unit 30, and the control unit correspondingly generates different magnitudes of currents according to the input signal, and the different magnitudes of currents can generate different magnitudes of electromagnetic force through the valve core of the electromagnetic flow regulating valve 40 when being transmitted to the valve core. Wherein, a spring is disposed at one end of the valve core of the electromagnetic flow control valve, and the generated electromagnetic force attracts the other end of the valve core, which is opposite to the elastic force of the spring, so that when the electromagnetic force and the elastic force of the spring are balanced, the electromagnetic flow control valve 40 can generate a corresponding opening corresponding to the current electromagnetic force. For example, the control unit may generate currents of different magnitudes in a range of 4-20mA, the solenoid flow control valve 40 may be in a fully closed state when a current signal of 4mA is provided, the solenoid flow control valve may be in a fully open state when a current signal of 20mA is provided, and the valve opening may be 50% when the current signal is at a middle signal value in a range of 4-20mA, for example, when the current signal is 12mA, corresponding to different valve openings.
Therefore, the movement stroke of the valve core is controlled by different electromagnetic forces generated by the current signals, so that different opening degrees are generated, and the purpose of adjusting the gas flow in the breathing circuit is achieved.
It is understood that the electromagnetic flow control valve 40 is a normally open type electromagnetic flow control valve. Under extreme conditions such as power shortage or failure of the oxygen respirator 1, the automatic regulating function of the electromagnetic flow regulating valve fails, but at the moment, the electromagnetic flow regulating valve 40 can still be used as a constant flow valve to continue to supply oxygen, so that the oxygen respirator can continue to supply oxygen in a quantitative oxygen supply manner, normal oxygen supply to the user 100 is ensured as much as possible, and the personal safety of the user is ensured.
In addition, the electromagnetic flow control valve 40 can be provided with different elastic pieces according to different situations. When the electromagnetic flow control valve 40 cannot normally work due to power shortage or failure, the elastic sheet can be in a free state, and the electromagnetic flow control valve is opened, namely, is in a normally open state. The specific opening degree of the electromagnetic flow control valve 40 in this state can be realized by spring plates of different specifications.
With continued reference to fig. 1, in embodiments of the present application, oxygen respirator 1 may also include a sensor 20. A sensor 20 may be coupled to the oxygen cylinder 10 and configured to sense an opening of a cylinder valve of the oxygen cylinder and generate a corresponding signal based thereon. For example, in one non-limiting embodiment, the sensor 20 may be a high pressure sensor configured to be coupled to the output of the oxygen cylinder 10 and to sense a change in pressure at the output of the oxygen cylinder when the cylinder valve of the oxygen cylinder is opened, thereby generating a high pressure signal indicative of the opening of the cylinder valve. However, it is within the scope of the present application that the sensor 20 may be any suitable type of sensor capable of sensing the cylinder valve opening and oxygen output of the oxygen cylinder. The sensor 20 may communicate with the control unit 30 and transmit the generated high-pressure signal to the control unit, and the control unit 30 may further generate a control signal based on the high-pressure signal and transmit the control signal to the electromagnetic flow rate regulating valve 40 to control the electromagnetic flow rate regulating valve 40 to be opened at a large opening degree, preferably, at an opening degree of 100%, to perform the first pre-inflation operation for a predetermined time. Therefore, at the moment when the cylinder valve of the oxygen cylinder 10 is opened, the electromagnetic flow control valve 40 can be automatically opened electrically, so that oxygen from the oxygen cylinder rapidly flows through the breathing circuit at atmospheric pressure through the automatic gas supply path, and the whole breathing circuit is flushed with oxygen to discharge the original gas including nitrogen existing in the breathing circuit. This allows the environment within the breathing circuit to be comparable to normal air conditions, avoiding injury to the user due to inadequate oxygen. After the first pre-purge operation is performed for a certain period of time (e.g., 10s), the opening degree of the electromagnetic flow rate adjustment valve 40 is decreased (e.g., to 50% opening degree) so as to perform a normal oxygen supply operation.
As shown in fig. 1, the oxygen respirator 1 may further include a manual air supply device 50 provided in a manual air supply path for supplying oxygen to the breathing circuit, and the manual air supply path may also be provided between the pressure reducer 11 and the breathing circuit in parallel with the automatic air supply path, which may simplify the piping design and save manufacturing materials. Wherein the manual air supply device 50 may be configured to be manually actuated to perform the second pre-charging operation in case of a failure of the electromagnetic flow regulating valve 40. Specifically, in the second pre-charging operation, the manual gas supply device 50 may flow oxygen from the oxygen cylinder 10 through the breathing circuit via the manual gas supply path to flush and discharge the original gas in the breathing circuit. Furthermore, the manual gas supply device 50 may be manually actuated while the electromagnetic flow regulating valve 40 is operated, so as to perform an oxygen increasing operation in a case where the demand of oxygen by the user is large and the supply of the electromagnetic flow regulating valve cannot meet the demand, assisting the electromagnetic flow regulating valve 40 in increasing the supply of oxygen to the breathing circuit.
In particular, the oxygen cylinder 10 and the pressure reducer 11 are in the high pressure region of the air pressure, the electromagnetic flow regulating valve 40 and the manual air supply device 50 are in the medium pressure region of the air pressure, and the breathing circuit is in the low pressure region of the air pressure. The breathing circuit in the low pressure region may provide comfortable use for the user.
Next, an automatic on-demand oxygen supply method of the oxygen respirator 1 of the present application will be described with reference to fig. 1.
Firstly, the oxygen respirator 1 is worn by a user 100, so that the user and the oxygen respirator form a breathing circuit with good air tightness; opening a cylinder valve of an oxygen cylinder 10 of the oxygen respirator 1; supplying oxygen to the breathing circuit through an electromagnetic flow regulating valve 40 provided in the automatic air supply path to finally supply oxygen to the user; detecting the oxygen use state in the breathing circuit in real time through a detector 60 connected to the breathing circuit and generating a corresponding detection value; transmitting a signal indicating the detected value to the control unit 30; and the control unit 30 may compare the detected value with a predetermined value and automatically adjust the opening of the electromagnetic flow regulating valve 40 based on the comparison result, thereby implementing oxygen supply on demand according to the actual oxygen use state of the user.
By applying the technical scheme of the application, the oxygen respirator can detect the breathing state of a user in real time through the detector and automatically supply oxygen through the control unit and the electromagnetic flow regulating valve according to the actual breathing requirement, so that the breathing condition provided by the oxygen respirator for rescue workers is more consistent with the natural condition, the reliability of the oxygen respirator is greatly increased, the use is safer, and the harm to the user is avoided; the service time of the equipment and the working time of the rescue workers on the rescue site can be greatly prolonged, the operation of the rescue workers in the using process is reduced, and the improvement of the rescue efficiency of the rescue workers is facilitated. By the technical scheme, the pre-inflation function of the gas circuit system can be realized while the oxygen bottle of the oxygen respirator is opened, so that the oxygen content in the breathing circuit is not lower than a normal level; and the oxygen respirator is also provided with a manual air supply device, so that the pre-inflation function can be realized as an alternative under the condition that the pre-inflation system fails, and the oxygen can be supplied when the oxygen demand is large.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. An oxygen respirator, characterized in that the oxygen respirator comprises:
an oxygen cylinder (10) provided with a cylinder valve and containing oxygen therein;
a pressure reducer (11) connected downstream of the oxygen cylinder (10) and reducing the pressure of oxygen from the oxygen cylinder;
an electromagnetic flow regulating valve (40) arranged in the automatic gas supply path and connected with the pressure reducer (11) for supplying oxygen to the breathing circuit;
a detector (60) connected to the breathing circuit and detecting a state of oxygen in the breathing circuit in real time to generate a corresponding detection value; and
a control unit (30) electrically connected to the electromagnetic flow regulating valve (40) and in communication with the detector (60) to receive a signal from the detector (60) indicative of the detected value,
wherein the control unit (30) is arranged to compare the detection value with a predetermined value and to adjust the opening of the electromagnetic flow regulating valve (40) based on the comparison result.
2. The oxygen respirator of claim 1, wherein the breathing circuit comprises CO2An absorption tank (70), a breathing bag (80) and a cooling tank (90), wherein the gas exhaled by the user (100) first passes through the CO2And the absorption tank (70) is used for removing carbon dioxide and then enters the breathing air bag (80), when a user (100) inhales, gas enters the cooling tank (90) from the breathing air bag to be cooled and then enters a respiratory system of the user, so that gas exchange between the breathing circuit and the user is realized.
3. Oxygen respirator according to claim 2, wherein the detector (60) is connected to the CO2An input end of the absorption tank (70).
4. Oxygen respirator according to any of claims 1 to 3, wherein the detector (60) comprises an oxygen sensor arranged to sense the oxygen concentration in the breathing circuit, the control unit (30) decreasing the opening of the electromagnetic flow regulating valve (40) when the oxygen concentration sensed by the oxygen sensor is above a predetermined value and vice versa.
5. Oxygen respirator according to any of claims 1 to 3, wherein the detector (60) comprises a pressure sensor arranged to sense the gas pressure in the breathing circuit, the control unit (30) decreasing the opening of the electromagnetic flow regulating valve (40) when the gas pressure sensed by the pressure sensor is above a predetermined value and vice versa.
6. Oxygen respirator according to any of claims 1 to 3, wherein the detector (60) comprises a flow sensor arranged to sense the gas flow in the breathing circuit, the control unit (30) increasing the opening of the electromagnetic flow regulating valve (40) when the gas flow sensed by the flow sensor is greater than a predetermined value and vice versa.
7. Oxygen respirator according to claim 1, wherein the control unit (30) is arranged to transmit a current signal to the electromagnetic flow regulating valve (40) to control the opening of the electromagnetic flow regulating valve.
8. Oxygen respirator according to claim 1, wherein the electromagnetic flow regulating valve (40) is a normally open electromagnetic flow regulating valve.
9. The oxygen respirator of claim 1, further comprising a sensor (20) connected to the oxygen cylinder (10) and arranged to sense the opening of the cylinder valve and generate a high pressure signal based on the opening of the cylinder valve, wherein the control unit (30) controls the electromagnetic flow regulating valve (40) to open at 100% opening based on the high pressure signal to perform a first pre-flush operation for a predetermined time to flow oxygen from the oxygen cylinder (10) through the breathing circuit via the automatic gas supply path so as to vent the original gas within the breathing circuit.
10. Oxygen respirator according to claim 9, further comprising a manual gas supply (50) arranged in a manual gas supply path for supplying oxygen to the breathing circuit, the manual gas supply path being arranged in parallel with the automatic gas supply path between the pressure reducer (11) and the breathing circuit, wherein the manual gas supply (50) is configured for:
a) is manually actuated in the event of failure of the electromagnetic flow regulating valve (40) to perform a second pre-charging operation, causing oxygen from the oxygen cylinder (10) to flow through the breathing circuit via the manual gas supply path so as to expel pre-existing gas within the breathing circuit; and/or
b) Is manually actuated while the electromagnetic flow regulating valve (40) is operating to perform an oxygen increasing operation to increase the supply of oxygen to the breathing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023335776.9U CN214158316U (en) | 2020-12-30 | 2020-12-30 | Oxygen respirator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023335776.9U CN214158316U (en) | 2020-12-30 | 2020-12-30 | Oxygen respirator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214158316U true CN214158316U (en) | 2021-09-10 |
Family
ID=77612196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023335776.9U Active CN214158316U (en) | 2020-12-30 | 2020-12-30 | Oxygen respirator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214158316U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114681831A (en) * | 2020-12-30 | 2022-07-01 | 德尔格安全设备（中国）有限公司 | Oxygen respirator and oxygen supply method of oxygen respirator |
-
2020
- 2020-12-30 CN CN202023335776.9U patent/CN214158316U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114681831A (en) * | 2020-12-30 | 2022-07-01 | 德尔格安全设备（中国）有限公司 | Oxygen respirator and oxygen supply method of oxygen respirator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2049390B1 (en) | Pressure activated device and breathing system | |
| US5036841A (en) | Self contained closed circuit breathing apparatus | |
| US4423723A (en) | Closed cycle respirator with emergency oxygen supply | |
| US7353824B1 (en) | Self contained breathing apparatus control system for atmospheric use | |
| EP3459599B1 (en) | Rebreather system | |
| US5111809A (en) | Breathing system | |
| US5857458A (en) | Automatic bellows refill | |
| US4440166A (en) | Electrically and mechanically controllable closed cycle respirator | |
| US11771927B2 (en) | Rebreathing apparatus having inhaled oxygen mixing and exhaled carbon dioxide removal functions by electronic control | |
| CN114681831A (en) | Oxygen respirator and oxygen supply method of oxygen respirator | |
| KR20180113443A (en) | Re-breathing Apparatus for Disaster | |
| US20210121649A1 (en) | Portable rebreathing system with staged addition of oxygen enrichment | |
| WO2014026103A1 (en) | Self-contained breathing apparatus | |
| CN214158316U (en) | Oxygen respirator | |
| CN201108661Y (en) | Double air bags positive-pressure oxygen respirator | |
| WO2012116764A1 (en) | Method for protecting aircraft occupant and breathing mask | |
| CN110639137B (en) | Oxygen supply device and method based on electrolyzed water | |
| CN212593563U (en) | Fire control respirator | |
| EP2550994B1 (en) | A regulation valve for a life support system | |
| US11993353B2 (en) | Breathing apparatus for scuba diving with semi-closed circuit gas recycling | |
| CN114681832A (en) | Circulating respiratory protection instrument and pre-inflation method for circulating respiratory protection instrument | |
| CN112339945A (en) | Electronic driving type closed cycle chemical regeneration diving breathing apparatus | |
| KR200329009Y1 (en) | Firefighter's portable oxygen resuscitator | |
| KR102643144B1 (en) | Portable re-breathing apparatus for disaster | |
| CN115282514B (en) | Artificial intelligence self-rescuer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |