Mounting structure of oxygen supply assembly and oxygen generator

Abstract

The utility model provides a mounting structure of an oxygen supply assembly and an oxygen generator. The mounting structure of the oxygen supply assembly comprises a cavity, and an atmospheric pressure cavity, a circuit board and an oxygen spraying valve which are arranged in the cavity, the circuit board is provided with a differential pressure type respiration sensor and an oxygen storage tank pressure sensor, the atmospheric pressure cavity is communicated with the atmosphere, and a valve seat of the oxygen spraying valve is provided with an air inlet used for being connected with an oxygen storage tank, an oxygen supply port used for supplying oxygen to the outside and a tank pressure monitoring port connected with the oxygen storage tank pressure sensor. The respiration sensor interface is connected with the differential pressure type respiration sensor; the differential pressure type respiration sensor is connected with the atmospheric pressure cavity and the respiration sensor connector, the accuracy of the detection result can be improved, the oxygen storage tank pressure sensor can be connected with the oxygen storage tank through the valve seat and detect the oxygen pressure, no hole needs to be additionally formed in the oxygen storage tank, and therefore the integrity of the oxygen storage tank is higher, and the air tightness is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to an oxygen generator technical field, especially an oxygen supply assembly's mounting structure and oxygen generator. BACKGROUND

[0002] Oxygen generator is a kind of equipment that can extract oxygen from air. It is mainly applied in medical field to provide high-purity oxygen for patients who need additional oxygen supply. The molecular sieve type oxygen generator is currently more commonly used, which realizes continuous gas supply by two molecular sieves performing the same cycle process. The working process is as follows: raw air is pressurized into compressed air by compressor, compressed air enters molecular sieve through inlet valve, nitrogen and oxygen are separated in molecular sieve, and high-purity oxygen is output.

[0003] At present, the oxygen supply assembly of oxygen generator is basically composed of oxygen storage tank, oxygen injection valve and oxygen storage tank pressure sensor and breathing sensor, which is connected by pipeline to realize pulse oxygen supply of oxygen generator. However, the current structure pipeline connection setting is usually more complex, and the joint setting is unreasonable, which leads to complex connection, and especially the breathing sensor is easily affected by airflow and structural parts in the chamber, thereby affecting the accuracy of detection. SUMMARY

[0004] The utility model aims at providing an oxygen supply assembly's mounting structure and oxygen generator, which solves the above problems existing in the prior art.

[0005] According to the first aspect of the utility model, an oxygen supply assembly's mounting structure is provided, which comprises:

[0006] Chamber, internally provided with circuit board, and the circuit board is provided with differential pressure type breathing sensor and oxygen storage tank pressure sensor;

[0007] Atmospheric pressure cavity, provided in the chamber, the opening of one end extends to the outside of the chamber and is in communication with the atmosphere, and the other end is provided with a pressure cavity interface;

[0008] Oxygen injection valve, provided in the chamber, the valve seat of the oxygen injection valve is provided with an inlet for connecting with the oxygen storage tank, an oxygen supply port for supplying oxygen to the outside, a tank pressure monitoring port connected with the oxygen storage tank pressure sensor, and a breathing sensor interface connected with the differential pressure type breathing sensor;

[0009] The inlet and the tank pressure monitoring port are in communication, and an oxygen outlet channel is formed between the inlet, the tank pressure monitoring port and the oxygen supply port; a breathing feedback channel is formed between the oxygen supply port and the breathing sensor interface;

[0010] The first interface of the differential pressure type breathing sensor is connected with the pressure cavity interface, and the second interface of the differential pressure type breathing sensor is connected with the breathing sensor interface.

[0011] In one embodiment of the utility model, oxygen storage tank, its establish in one side of chamber, and be equipped with oxygen outlet, oxygen outlet is connected with inlet through pipeline, oxygen is transported to the oxygen injection valve.

[0012] In one embodiment of the utility model, the circuit board is fixedly connected to the top wall of the chamber, the oxygen storage tank pressure sensor and the differential pressure breathing sensor are connected to the bottom surface of the circuit board, and the oxygen injection valve and the oxygen storage tank are located below the circuit board.

[0013] In one embodiment of the utility model, the oxygen storage tank and the atmospheric pressure cavity are distributed on opposite sides of the oxygen injection valve, the inlet and the tank pressure monitoring port are located on one side of the oxygen injection valve close to the oxygen storage tank, and the oxygen supply port and the breathing sensor interface are located on the other side of the oxygen injection valve.

[0014] In one embodiment of the utility model, the atmospheric pressure cavity is arranged close to the air inlet of the chamber and is formed by inwardly recessed arrangement of the outer wall of the chamber.

[0015] In one embodiment of the utility model, further comprising: an oxygen concentration sensor connected to the circuit board and arranged close to the oxygen supply port and connected to the oxygen supply port through a pipeline.

[0016] In one embodiment of the utility model, further comprising: a filter arranged on the external pipeline of the oxygen supply port.

[0017] In one embodiment of the utility model, the oxygen injection valve further comprises an electric control valve body for controlling the conduction and closure of the oxygen outlet channel and the breathing feedback channel.

[0018] In one embodiment of the utility model, further comprising:

[0019] A controller for receiving the pressure signal generated by the differential pressure breathing sensor and controlling the electric control valve.

[0020] When the differential pressure breathing sensor is in negative pressure, the electric control valve is in the state of being powered on, and the oxygen outlet channel is in conduction and the breathing feedback channel is in closure for a preset length of time; when the differential pressure breathing sensor is in positive pressure, the electric control valve is in the state of being powered off, and the oxygen outlet channel is in closure.

[0021] According to the second aspect of the utility model, an oxygen generator is also provided, comprising the mounting structure of the above oxygen supply assembly.

[0022] The utility model has the advantages of:

[0023] The installation structure of the oxygen supply assembly is in communication with the atmosphere through the air inlet of the valve seat and the tank pressure monitoring port, and is connected with the oxygen storage tank and the oxygen storage tank pressure sensor respectively, so that only one oxygen storage tank oxygen outlet is needed on the oxygen storage tank to meet the oxygen supply and pressure detection, thereby simplifying the structure of the oxygen storage tank, making the oxygen storage tank more integral and better airtightness; the respiration sensor is a differential pressure respiration sensor and is in communication with the outside atmosphere through the connection of the atmospheric pressure cavity, so as to avoid the interference of the airflow in the cavity on the respiration sensor, thereby making the atmospheric pressure detected by the differential pressure respiration sensor more stable, and further improving the accuracy of the detection result of the differential pressure respiration sensor.

[0024] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings incorporated in and forming a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the application.

[0026] Figure 1 is a schematic view of the installation structure of the oxygen supply assembly provided by the present application located in an oxygen generator;

[0027] Figure 2 is a schematic view of part of the structure of the oxygen supply assembly provided by the present application;

[0028] Figure 3 is a schematic view of the structure of the oxygen injection valve of the oxygen supply assembly provided by the present application;

[0029] Figure 4 is one of the schematic views of the chamber and the atmospheric pressure cavity of the oxygen supply assembly provided by the present application;

[0030] Figure 5 is the second of the schematic views of the chamber and the atmospheric pressure cavity of the oxygen supply assembly provided by the present application.

[0031] Figures 1 to 5 The one-to-one correspondence between the names of the components and the reference numerals in the drawings is as follows:

[0032] In the drawings, the reference numerals and the corresponding component names are as follows:

[0033] 10, main frame; 101, chamber; 102, atmospheric pressure cavity; 1011, air inlet; 1021, pressure cavity interface; 103, grating plate;

[0034] 20, oxygen injection valve;

[0035] 21, valve seat; 211, air inlet; 212, oxygen supply port; 213, tank pressure monitoring port; 214, respiration sensor interface; 215, pressure reducing valve mounting groove;

[0036] 22. An electrically controlled valve body;

[0037] 30. An oxygen storage tank; 301. An oxygen outlet;

[0038] 40. A circuit board;

[0039] 51. An oxygen storage tank pressure sensor;

[0040] 52. A differential pressure respiration sensor;

[0041] 53. An oxygen concentration sensor;

[0042] 60. A filter. DETAILED DESCRIPTION

[0043] Various exemplary embodiments of the present application will now be described in detail with reference to the figures. It should be noted that the relative arrangements, numerical expressions, and values of the components and steps set forth in these embodiments are not limiting to the scope of the present application unless otherwise specifically stated.

[0044] The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application or its application or uses.

[0045] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the specification, where appropriate.

[0046] In all of the examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Thus, other examples of the exemplary embodiments can have different values.

[0047] It should be noted that like references and characters herein relate to like items throughout the figures, and once an item is defined in one figure, it need not be discussed further in subsequent figures.

[0048] In this document, "upper", "lower", "front", "back", "left", "right", and the like are used to describe relative positions between the relevant parts, and are not intended to limit the absolute positions of the relevant parts.

[0049] In this document, "first", "second", and the like are used to distinguish between items, and are not intended to indicate importance and order, and the existence of a prerequisite.

[0050] In this document, "equal", "same", and the like are not strictly limited in the mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and allowed in manufacturing or use, etc.

[0051] In this text, the meaning of "a plurality" is two or more, unless otherwise stated.

[0052] Furthermore, the present application can refer to the same reference numerals and / or reference letters in different examples, such repetition is for the purpose of simplification and clarity, and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0053] The various aspects and features described and illustrated in this specification can be applied individually or in any combination, as a divisional application of this application.

[0054] Figures 1 to 5 The installation structure of the oxygen supply assembly can be applied to an oxygen generator or other oxygen supply equipment. The installation structure of the oxygen supply assembly comprises a chamber 101 and an atmospheric pressure cavity 102. The atmospheric pressure cavity 102 is arranged in the chamber 101, and one end of the atmospheric pressure cavity 102 is open and extends to the outside of the chamber 101 and is in communication with the atmosphere, and the other end is provided with a pressure cavity interface 1021.

[0055] The installation structure of the oxygen supply assembly further comprises an oxygen injection valve 20 and a circuit board 40 arranged in the chamber 101, and a differential pressure breathing sensor 52 and an oxygen storage tank pressure sensor 51 arranged on the circuit board 40.

[0056] The valve seat 21 of the oxygen injection valve 20 is provided with an air inlet 211 for connecting with the oxygen storage tank 30, an oxygen supply port 212 for supplying oxygen to the outside, a tank pressure monitoring port 213 connected with the oxygen storage tank pressure sensor 51, and a breathing sensor interface 214 connected with the differential pressure breathing sensor 52.

[0057] The air inlet 211 and the tank pressure monitoring port 213 of the valve seat 21 are in communication, and an oxygen outlet channel is formed between the two and the oxygen supply port 212. The oxygen supply port 212 and the breathing sensor interface 214 form a breathing feedback channel. The differential pressure breathing sensor 52 has a first interface and a second interface, the first interface of which is connected with the pressure cavity interface 1021 of the atmospheric pressure cavity 102, and the second interface of which is connected with the breathing sensor interface 214 of the valve seat 21.

[0058] Since the air inlet 211 and the tank pressure monitoring port 213 of the valve seat 21 are in communication, and the air inlet 211 is connected with the oxygen storage tank 30, the oxygen storage tank pressure sensor 51 can detect the oxygen pressure in the oxygen storage tank 30 through the air inlet 211 and the tank pressure monitoring port 213, without the need for additional holes on the oxygen storage tank 30, which is beneficial to simplify the structure of the oxygen storage tank 30, and make the oxygen storage tank 30 more integral and better airtight.

[0059] Oxygen stored in the oxygen tank 30 can be delivered to the oxygen injection valve 20 through the air inlet 211, and then supplied to the user through the oxygen supply port 212. The changing air pressure caused by the user's breathing can act on the differential pressure breathing sensor 52 through the breathing feedback channel. The differential pressure breathing sensor 52 is connected to the outside atmosphere through the atmospheric pressure chamber 102, which can improve the accuracy of the detection results; and the atmospheric pressure chamber 102 can reduce the interference of external airflow, and the air inside the atmospheric pressure chamber 102 is more stable, thereby making the atmospheric pressure detected by the differential pressure breathing sensor 52 more stable, which can further improve the accuracy of the detection results of the differential pressure breathing sensor 52.

[0060] In some embodiments of this utility model, such as Figure 1 , Figure 2 As shown, the installation structure of the oxygen supply assembly also includes an oxygen storage tank 30. The oxygen storage tank 30 is located on one side of the chamber 101 and has an oxygen outlet 301. The oxygen outlet 301 is connected to the air inlet 211 of the valve seat 21 through a pipeline to supply oxygen to the oxygen injection valve 20.

[0061] In some embodiments of this utility model, such as Figure 1 , Figure 2 As shown, the circuit board 40 is fixedly connected to the top wall of the chamber 101. The oxygen tank pressure sensor 51 and the differential pressure breathing sensor 52 are connected to the bottom surface of the circuit board 40. The oxygen injection valve 20 and the oxygen tank 30 are located below the circuit board 40, which can reduce the space occupied by the circuit board 40 in the chamber 101, make reasonable use of the chamber 101, and facilitate the pipeline connection between the oxygen injection valve 20, the oxygen tank 30, the oxygen tank pressure sensor 51 and the differential pressure breathing sensor 52, so as to facilitate assembly and subsequent inspection and maintenance.

[0062] Specifically, the oxygen storage tank 30 and the atmospheric pressure chamber 102 are distributed on opposite sides of the oxygen injection valve 20; the air inlet 211 and the tank pressure monitoring port 213 are located on the side of the oxygen injection valve 20 closer to the oxygen storage tank 30, and the oxygen supply port 212 and the breathing sensor interface 214 are located on the other side of the oxygen injection valve 20, which can further facilitate the installation and connection of each pipeline, and can effectively shorten the length of each pipeline and reduce the bends in each pipeline.

[0063] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, chamber 101 is equipped with an air inlet 1011, allowing outside air to enter chamber 101 through the air inlet 1011 to dissipate heat from components such as circuit board 40, oxygen tank pressure sensor 51, differential pressure breathing sensor 52, and oxygen injection valve 20 within chamber 101. The air inlet 1011 is located on the side of chamber 101 furthest from the oxygen tank 30, which reduces the obstruction of the oxygen tank 30 to the airflow for heat dissipation.

[0064] like Figure 5 As shown, the atmospheric pressure chamber 102 is located near the air inlet 1011 of the chamber 101 and is formed by the inward indentation of the outer wall of the chamber 101, which can avoid the formation of a protruding structure on the outside of the chamber 101 that would damage the shape of the oxygen generator.

[0065] like Figure 1 As shown, a grille plate 103 can be installed at the air inlet 1011. The grille plate 103 extends to the outside of the opening of the atmospheric pressure chamber 102 and leaves a gap between it and the opening of the atmospheric pressure chamber 102, which helps to keep the gas in the atmospheric pressure chamber 102 stable.

[0066] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the oxygen supply assembly's mounting structure also includes an oxygen concentration sensor 53. The oxygen concentration sensor 53 is connected to the circuit board 40 and is positioned near the oxygen supply port 212 of the oxygen injection valve 20. It is connected to the oxygen supply port 212 via a pipeline to detect the oxygen concentration output from the oxygen supply port 212.

[0067] Specifically, the oxygen concentration sensor 53 can be installed inside the measuring tube, which has an inlet and an outlet. The oxygen supply port 212 is connected to the inlet of the measuring tube through a pipeline, and the outlet of the measuring tube can be connected to an oxygen nozzle through a pipeline to provide oxygen to the user.

[0068] In some embodiments of this utility model, such as Figure 2 As shown, the oxygen supply assembly also includes a filter 60. The filter 60 is installed on the external pipe of the oxygen supply port 212 of the oxygen injection valve 20 to filter the output oxygen.

[0069] The filter 60 can be installed in the pipeline between the oxygen supply port 212 and the oxygen concentration sensor 53; or, the filter 60 can also be installed in the pipeline between the outlet of the measuring tube and the oxygen nozzle.

[0070] To facilitate installation and disassembly, the pipelines between the air inlet 211 and the oxygen outlet 301, the pipelines between the oxygen supply port 212 and the oxygen concentration sensor 53, the pipelines between the tank pressure monitoring port 213 and the oxygen storage tank pressure sensor 51, and the pipelines between the breathing sensor interface 214 and the differential pressure breathing sensor 52 can all be made of detachable and sealable flexible hoses.

[0071] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the oxygen injection valve 20 also includes an electrically controlled valve body 22, which is used to control the opening and closing of the oxygen outlet channel and the breathing feedback channel in the valve seat 21.

[0072] Furthermore, the oxygen supply assembly's mounting structure also includes a controller (not shown in the figure), which receives the pressure signal generated by the differential pressure breathing sensor 52 and controls the electronically controlled valve body 22.

[0073] When the differential pressure breathing sensor 52 is under negative pressure, the electronically controlled valve body 22 is energized, and the oxygen channel is opened and the breathing feedback channel is closed for a preset time before opening; when the differential pressure breathing sensor 52 is under positive pressure, the electronically controlled valve body 22 is de-energized and the oxygen channel is closed.

[0074] In detail, initially, the electrically controlled valve body 22 is de-energized, closing the oxygen outlet channel of the valve seat 21 and opening the breathing feedback channel. When the oxygen supply assembly is not working, the electrically controlled valve body 22 remains de-energized, which helps save energy.

[0075] When the user inhales, a negative pressure is generated at the oxygen supply port 212. This negative pressure acts on the differential pressure respiratory sensor 52 through the connected respiratory feedback channel. At this time, the controller, based on the pressure signal from the differential pressure respiratory sensor 52, controls the electronically controlled valve 22 to open the oxygen outlet channel and close the respiratory feedback channel. Simultaneously, the air inlet 211 and the oxygen supply port 212 are connected, and the oxygen storage tank 30 provides oxygen to the user through the oxygen outlet channel. The closure of the respiratory feedback channel prevents the oxygen pressure from affecting the differential pressure respiratory sensor 52, reducing the wear caused by the suction force of the negative pressure. The controller can control the duration for which the electronically controlled valve 22 closes the respiratory feedback channel. After a preset time, the controller controls the electronically controlled valve 22 to open the respiratory feedback channel. The duration for which the respiratory feedback channel is closed can be set according to the user's specific exhalation frequency.

[0076] When the user exhales, positive pressure is generated at the oxygen supply port 212. The positive pressure acts on the differential pressure breathing sensor 52 through the conducting breathing feedback channel, so that the differential pressure breathing sensor 52 is at positive pressure. At this time, the controller controls the electronic control valve body 22 to close the oxygen supply channel based on the pressure signal of the differential pressure breathing sensor 52, thus saving oxygen.

[0077] When the controller controls the electronically controlled valve body 22 to close the oxygen supply channel based on the pressure signal of the differential pressure breathing sensor 52, it can further control the electronically controlled valve body 22 to close the breathing feedback channel for a preset time and then open it, thereby reducing the wear and tear on the differential pressure breathing sensor 52 caused by negative pressure.

[0078] Furthermore, a pressure reducing valve mounting groove 215 can be provided on the valve seat 21, located on the side of the valve seat 21 at the breathing feedback channel, and a pressure reducing valve (not shown in the figure) is provided in the pressure reducing valve mounting groove 215. The pressure reducing valve can release pressure when the gas in the breathing feedback channel reaches a certain pressure, protecting the differential pressure breathing sensor 52.

[0079] This utility model also provides an oxygen generator, including the aforementioned installation structure for an oxygen supply component. For example... Figure 1 As shown, the oxygen generator includes a main frame 10, and a chamber is formed within the main frame 10.

[0080] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of the present invention is defined by the appended claims.

Claims

1. An installation structure for an oxygen supply component, characterized in that, include: The chamber contains a circuit board, on which a differential pressure breathing sensor and an oxygen tank pressure sensor are mounted. An atmospheric pressure chamber is located inside the chamber, with one end of its opening extending outside the chamber and communicating with the atmosphere, and the other end of its opening having a pressure chamber interface. An oxygen injection valve is located in the chamber. The valve seat of the oxygen injection valve is provided with an air inlet for connecting to the oxygen storage tank, an oxygen supply port for supplying oxygen to the outside, a tank pressure monitoring port connected to the pressure sensor of the oxygen storage tank, and a breathing sensor interface connected to the differential pressure breathing sensor. The air inlet and the tank pressure monitoring port are connected, and an oxygen outlet channel is formed between them and the oxygen supply port; a respiratory feedback channel is formed between the oxygen supply port and the respiratory sensor interface. The first interface of the differential pressure respiratory sensor is connected to the pressure chamber interface, and the second interface of the differential pressure respiratory sensor is connected to the respiratory sensor interface.

2. The installation structure of the oxygen supply component according to claim 1, characterized in that, Also includes: An oxygen storage tank is located on one side of the chamber and has an oxygen outlet. The oxygen outlet is connected to the air inlet through a pipeline to supply oxygen to the oxygen injection valve.

3. The installation structure of the oxygen supply component according to claim 2, characterized in that, The circuit board is fixedly connected to the top wall of the chamber, the oxygen tank pressure sensor and the differential pressure breathing sensor are connected to the bottom surface of the circuit board, and the oxygen injection valve and the oxygen tank are located below the circuit board.

4. The installation structure of the oxygen supply component according to claim 2, characterized in that, The oxygen storage tank and the atmospheric pressure chamber are distributed on opposite sides of the oxygen injection valve; the air inlet and the tank pressure monitoring port are located on the side of the oxygen injection valve closer to the oxygen storage tank, and the oxygen supply port and the breathing sensor interface are located on the other side of the oxygen injection valve.

5. The installation structure of the oxygen supply component according to claim 1, characterized in that, The atmospheric pressure chamber is located near the air inlet of the chamber and is formed by an inward indentation from the outer wall of the chamber.

6. The installation structure of the oxygen supply component according to claim 1, characterized in that, Also includes: An oxygen concentration sensor is connected to the circuit board and positioned near the oxygen supply port, and is connected to the oxygen supply port via a pipeline.

7. The installation structure of the oxygen supply component according to claim 1, characterized in that, Also includes: A filter is installed on the external pipe of the oxygen supply port.

8. The installation structure of the oxygen supply assembly according to any one of claims 1 to 7, characterized in that, The oxygen injection valve also includes an electrically controlled valve body, which is used to control the opening and closing of the oxygen outlet channel and the breathing feedback channel.

9. The installation structure of the oxygen supply component according to claim 8, characterized in that, Also includes: The controller is used to receive the pressure signal generated by the differential pressure breathing sensor and control the electronically controlled valve; When the differential pressure respiratory sensor is under negative pressure, the electronically controlled valve is energized, and the oxygen outlet channel is opened, while the respiratory feedback channel is closed for a preset time before opening; when the differential pressure respiratory sensor is under positive pressure, the electronically controlled valve is de-energized, and the oxygen outlet channel is closed.

10. An oxygen generator, characterized in that, The installation structure includes the oxygen supply component as described in any one of claims 1 to 9.

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