Oxygen supply assembly with built-in gas pressure sensor and oxygen generator

Abstract

The utility model provides an oxygen supply assembly with a built-in gas pressure sensor and an oxygen generator. The oxygen supply assembly comprises an oxygen storage tank provided with an oxygen outlet and an opening, a circuit board fixedly connected to the oxygen storage tank and used for sealing the opening, the gas pressure sensor connected to the circuit board and located in the opening, an oxygen spraying valve seat and an electric control valve. The oxygen spraying valve seat is provided with an air inlet connected with the oxygen outlet, an oxygen supply port used for supplying oxygen to the outside and a breathing feedback channel formed between the oxygen supply port and the breathing sensor connector. The electric control valve is used for controlling opening and closing of the oxygen outlet channel and the breathing feedback channel; the gas pressure sensor is arranged in the opening of the oxygen storage tank, the oxygen pressure in the oxygen storage tank can be detected more accurately, the opening of the oxygen storage tank is sealed through the circuit board, the structure of the oxygen storage tank can be simplified, and cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of oxygen generator technology, and in particular to an oxygen supply component and an oxygen generator with a built-in gas pressure sensor. Background Technology

[0002] An oxygen concentrator is a device that extracts oxygen from the air. It is primarily used in the medical field to provide high-purity oxygen to patients requiring additional oxygen supply. Molecular sieve oxygen concentrators are currently the most common type, using two molecular sieves that undergo the same circulation process to achieve continuous gas supply. The working process is as follows: raw air is pressurized by a compressor to become compressed air. The compressed air enters the molecular sieve through the inlet valve, where nitrogen and oxygen are separated, and high-purity oxygen is output.

[0003] Portable oxygen concentrators are currently the mainstream development trend for personal home oxygen concentrators. Firstly, they need to be as compact as possible to reduce space occupation, and secondly, they need to simplify the weight of the equipment for easy carrying. Utility Model Content

[0004] The purpose of this utility model is to provide an oxygen supply component and an oxygen generator with a built-in gas pressure sensor. By eliminating the top structure of the traditional oxygen storage tank, the weight of the equipment is reduced while making its spatial structure more compact. At the same time, the pressure sensor is designed to be built-in, thus avoiding unnecessary pipeline connections and eliminating the need to open a corresponding gas pressure sensor interface on the oxygen storage tank or oxygen injection valve seat.

[0005] According to a first aspect of the present invention, an oxygen supply component built into a gas pressure sensor is provided, comprising:

[0006] An oxygen storage tank, which is equipped with an oxygen outlet and an open opening;

[0007] A circuit board, which is fixedly connected to the oxygen storage tank and seals the opening;

[0008] A gas pressure sensor is connected to the circuit board and is located inside the opening;

[0009] The oxygen injection valve seat is provided with an air inlet connected to the oxygen outlet, an oxygen supply port for supplying oxygen to the outside, and a respiratory sensor interface for connecting an external respiratory sensor; an oxygen outlet channel is formed between the air inlet and the oxygen supply port; a respiratory feedback channel is formed between the oxygen supply port and the respiratory sensor interface.

[0010] An electrically controlled valve is used to control the opening and closing of the oxygen supply channel and the respiratory feedback channel.

[0011] In one embodiment of this utility model, the controller is used to receive the pressure signal generated by the respiratory sensor connected externally to the respiratory sensor interface and control the electronically controlled valve;

[0012] When the breathing sensor is under negative pressure, the electronically controlled valve is energized, and the oxygen outlet channel is opened, and the breathing feedback channel is opened after being closed for a preset time; when the breathing sensor is under positive pressure, the electronically controlled valve is de-energized, and the oxygen outlet channel is closed.

[0013] In one embodiment of the present invention, it further includes: a pressure reducing valve mounting groove, which is located on the side of the oxygen injection valve seat at the breathing feedback channel, and a pressure reducing valve is provided in the pressure reducing valve mounting groove.

[0014] In one embodiment of this utility model, the circuit board is fixedly connected to the oxygen storage tank by fasteners.

[0015] In one embodiment of this utility model, a sealing ring is provided between the circuit board and the opening of the oxygen storage tank.

[0016] In one embodiment of this utility model, it further includes:

[0017] A breathing sensor, which is connected to the circuit board and positioned near the breathing sensor interface, and connected to the breathing sensor interface via a conduit: and / or,

[0018] 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.

[0019] In one embodiment of this utility model, a filter is further included, which is disposed on the external pipe of the oxygen supply port.

[0020] In one embodiment of this utility model, the air inlet is located on one side of the oxygen injection valve seat and is positioned close to the oxygen storage tank; the oxygen supply port and the breathing sensor interface are located on the other side of the oxygen injection valve seat.

[0021] According to a second aspect of the present invention, an oxygen generator is also provided, including the oxygen supply component built into the gas pressure sensor described above.

[0022] In one embodiment of this utility model, it further includes:

[0023] The main frame has a heat dissipation cavity and an installation cavity inside. One side of the heat dissipation cavity is connected to the installation cavity. The oxygen storage tank of the oxygen supply component is located in the installation cavity. The circuit board, gas pressure sensor, oxygen injection valve seat and electric control valve of the oxygen supply component are located in the heat dissipation cavity. One end of the circuit board extends into the installation cavity and is connected to the oxygen storage tank.

[0024] The beneficial effects of this utility model are as follows:

[0025] By sealing the opening of the oxygen storage tank with a circuit board and placing a gas pressure sensor connected to the circuit board inside the opening, the oxygen pressure inside the tank can be accurately detected. This simplifies the structure of the oxygen storage tank, eliminating the need for an additional tank cover and openings for connecting the gas pressure sensor, thereby reducing the weight of the equipment and the complexity of the piping. Furthermore, the circuit board overlaps with the opening of the oxygen storage tank, using the circuit board to achieve a sealed environment and the tank to provide fixed support for the circuit board. This results in a more compact oxygen supply component structure, reducing the space occupied and facilitating the miniaturization of the oxygen generator.

[0026] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0028] Figure 1 This is a schematic diagram of the overall structure of the oxygen supply component built into the gas pressure sensor provided by this utility model.

[0029] Figure 2 yes Figure 1 Exploded view of the oxygen supply unit;

[0030] Figure 3 yes Figure 1 Schematic diagram of the structure of the oxygen injection valve seat and the electrically controlled valve;

[0031] Figure 4 This utility model provides a structural schematic diagram of an oxygen generator.

[0032] 10. Main frame; 101. Heat dissipation cavity; 102. Mounting cavity;

[0033] 21. Oxygen injection valve seat; 211. Air inlet; 212. Oxygen supply port; 213. Breathing sensor interface; 214. Pressure reducing valve mounting slot;

[0034] 22. Electrically controlled valve;

[0035] 30. Oxygen storage tank; 301. Oxygen outlet; 302. Opening; 303. Flange;

[0036] 31. Sealing ring;

[0037] 40. Circuit board;

[0038] 41. Fasteners;

[0039] 51. Gas pressure sensor;

[0040] 52. Breathing sensor;

[0041] 53. Oxygen concentration sensor. Detailed Implementation

[0042] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0043] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0044] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0045] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0046] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0047] In this article, terms such as "up," "down," "top," "bottom," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0048] In this article, "first," "second," etc., are used only to distinguish one another, and not to indicate degree of importance, order, or prerequisite for each other.

[0049] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0050] In this document, unless otherwise stated, "multiple" means two or more.

[0051] Furthermore, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0052] Wherever possible, the various aspects and features described and illustrated in this specification may be applied individually, and these individual aspects may serve as the subject matter of a divisional application.

[0053] Figure 1 Figure 2 and Figure 3 This invention illustrates an oxygen supply component integrated into a gas pressure sensor, applicable to oxygen generators or other oxygen supply equipment. The oxygen supply component includes an oxygen injection valve seat 21, an electronically controlled valve 22, an oxygen storage tank 30, a circuit board 40, and a gas pressure sensor 51.

[0054] The oxygen storage tank 30 has an oxygen outlet 301 and an opening 302; the circuit board 40 is fixedly connected to the oxygen storage tank 30 and closes the opening 302; the gas pressure sensor 51 is connected to the circuit board 40 and located inside the opening 302 of the oxygen storage tank 30; the oxygen injection valve seat 21 has an air inlet 211, an oxygen supply port 212, and a breathing sensor interface 213. The air inlet 211 is connected to the oxygen outlet 301 of the oxygen storage tank 30, the oxygen supply port 212 is used to supply oxygen to the outside, and the breathing sensor interface 213 is used to connect an external breathing sensor. An oxygen outlet channel is formed between the air inlet 211 and the oxygen supply port 212 of the oxygen injection valve seat 21, and a breathing feedback channel is formed between the oxygen supply port 212 and the breathing sensor interface 213; the electronically controlled valve 22 is used to control the opening and closing of the oxygen outlet channel and the breathing feedback channel.

[0055] By sealing the opening 302 of the oxygen storage tank 30 with the circuit board 40, the gas pressure sensor 51 can be directly placed inside the opening 302 of the oxygen storage tank 30 to detect oxygen pressure. This simplifies the structure of the oxygen storage tank 30, eliminating the need for additional openings on the oxygen storage tank 30 to connect the gas pressure sensor 51 externally, and also makes the detection results more accurate. Furthermore, the overlap between the circuit board 40 and the opening 302 of the oxygen storage tank 30 allows for a more compact structure of the oxygen supply assembly, reducing the space required and facilitating the miniaturization design of the oxygen generator.

[0056] In some embodiments of this invention, the oxygen supply assembly further includes a controller (not shown in the figure), which receives pressure signals generated by a breathing sensor connected externally to the breathing sensor interface 213 and controls the electrically controlled valve 22. The controller can be connected to the circuit board 40.

[0057] The oxygen supplied from oxygen outlet 212 is provided to the user. The pressure changes caused by the user's breathing can act on the breathing sensor 52 through the breathing feedback channel. The pressure signal generated by the breathing sensor 52 can reflect the user's breathing status, and the controller can control the electronically controlled valve 22 according to the user's breathing status to automatically supply oxygen to the user.

[0058] When the breathing sensor 52 is under negative pressure, the electric control valve 22 is energized, and the oxygen outlet channel is opened, and the breathing feedback channel is opened after being closed for a preset time; when the breathing sensor 52 is under positive pressure, the electric control valve is de-energized, and the oxygen outlet channel is closed.

[0059] In detail, in the initial state, the electrically controlled valve 22 is de-energized, which closes the oxygen outlet channel of the oxygen injection valve seat 21 and opens the breathing feedback channel. When the oxygen supply assembly is not working, the electrically controlled valve 22 remains de-energized, which helps to save energy.

[0060] When the user inhales, a negative pressure is generated at the oxygen supply port 212. This negative pressure acts on the respiratory sensor 52 through the connected respiratory feedback channel. At this time, based on the pressure signal from the respiratory sensor 52, the controller controls the electronically controlled valve 22 to open the oxygen outlet channel and close the respiratory feedback channel. At this point, 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 respiratory sensor 52 and reduces the wear and tear 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.

[0061] When the user exhales, positive pressure is generated at the oxygen supply port 212. The positive pressure acts on the breathing sensor 52 through the conducting breathing feedback channel, so that the breathing sensor 52 is under positive pressure. At this time, the controller controls the electric control valve 22 to close the oxygen supply channel based on the pressure signal of the breathing sensor 52, thus saving oxygen.

[0062] When the controller controls the solenoid valve 22 to close the oxygen channel based on the pressure signal from the breathing sensor 52, it can further control the solenoid valve 22 to close the breathing feedback channel for a preset time and then open it, thereby reducing the wear and tear on the breathing sensor 52 caused by negative pressure.

[0063] In some embodiments of this utility model, such as Figure 3 As shown, the oxygen injection valve seat 21 is provided with a pressure reducing valve mounting groove 214, which is located on the side of the oxygen injection 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 214. The pressure reducing valve can release pressure when the gas in the breathing feedback channel reaches a certain pressure, thus protecting the breathing sensor.

[0064] In some embodiments of this utility model, such as Figure 2 As shown, the circuit board 40 is fixedly connected to the oxygen storage tank 30 by fasteners 41, which is easy to install and disassemble, and facilitates later inspection and maintenance.

[0065] Specifically, the edge of the opening 302 of the oxygen storage tank 30 is provided with a flange 303 for connecting fasteners 41. The circuit board 40 is attached to the flange 303 and is fixedly connected to the flange 303 by a plurality of fasteners 41.

[0066] Furthermore, a sealing ring 31 is provided between the circuit board 40 and the opening 302 of the oxygen storage tank 30 to prevent air leakage at the opening 302. An annular groove can be formed on the flange 303 at the edge of the opening 302 for installing the sealing ring 31 and fixing its position. After installing the fastener 41, the flange 303 and the circuit board 40 can press the sealing ring 31 together, ensuring a tight seal.

[0067] In some embodiments of this utility model, such as Figure 1 As shown, the oxygen supply assembly also includes a breathing sensor 52, which is connected to the circuit board 40 and located near the breathing sensor interface 213. The breathing sensor 52 is connected to the breathing sensor interface 213 through a tubing.

[0068] The breathing sensor 52 is a differential pressure sensor with two interfaces. One interface is connected to the breathing sensor interface 213 through a pipeline, and the other interface can be connected to the outside atmosphere to ensure the accuracy of the detection results.

[0069] In some embodiments of this utility model, such as Figure 1 As shown, the oxygen supply assembly also includes an oxygen concentration sensor 53, which is connected to the circuit board 40 and located near the oxygen supply port 212. The oxygen concentration sensor 53 is connected to the oxygen supply port 212 through a pipeline to detect the oxygen concentration output by the oxygen supply port 212.

[0070] 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.

[0071] In some embodiments of this utility model, such as Figure 1 As shown, the oxygen supply assembly also includes a filter (not shown in the figure), which is installed on the external pipe of the oxygen supply port 212 to filter the output oxygen.

[0072] The filter can be installed in the pipeline between the oxygen supply port 212 and the oxygen concentration sensor 53; or, the filter can be installed in the pipeline between the outlet of the measuring tube and the oxygen nozzle.

[0073] In some embodiments of this utility model, such as Figure 1As shown, the air inlet 211 is located on one side of the oxygen injection valve seat 21 and is positioned close to the oxygen storage tank 30, while the oxygen supply port 212 and the breathing sensor interface 213 are located on the other side of the oxygen injection valve seat 21. This rational arrangement of the oxygen supply components reduces pipeline length and facilitates installation and disassembly.

[0074] Specifically, the oxygen outlet 301 of the oxygen storage tank 30 can be located near the air inlet 211. One end of the circuit board 40 is connected to the opening 302 covering the oxygen storage tank 30. The breathing sensor 52 and the oxygen concentration sensor 53 can be located at the end of the circuit board 40 away from the oxygen storage tank 30 and on the side of the oxygen injection valve seat 21 away from the oxygen storage tank 30, so that the breathing sensor 52 can be connected to the breathing sensor interface 213 and the oxygen concentration sensor 53 can be connected to the oxygen supply port 212.

[0075] To facilitate installation and disassembly, the piping between the air inlet 211 and the oxygen outlet 301, the piping between the oxygen supply outlet 212 and the oxygen concentration sensor 53, and the piping between the breathing sensor interface 213 and the breathing sensor 52 can all be made of detachable and sealable flexible tubing.

[0076] This utility model also provides an oxygen generator, such as Figure 4 As shown, the oxygen generator includes an oxygen supply component with a gas pressure sensor built into it, as described above.

[0077] In some embodiments of this utility model, the oxygen generator further includes a main frame 10. The main frame 10 has a heat dissipation cavity 101 and a mounting cavity 102 inside. One side of the heat dissipation cavity 101 communicates with the mounting cavity 102. The oxygen storage tank 30 of the oxygen supply component is located in the mounting cavity 102. The circuit board 40, gas pressure sensor 51, oxygen injection valve seat 21, and electronic control valve 22 of the oxygen supply component are located in the heat dissipation cavity 101. One end of the circuit board 40 extends into the mounting cavity 102 and connects to the oxygen storage tank 30. The heat dissipation cavity 101 has an air inlet, allowing outside air to enter the heat dissipation cavity 101 and dissipate heat from the oxygen supply component.

[0078] 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 oxygen supply component built into a gas pressure sensor, characterized in that, include: An oxygen storage tank, which has an oxygen outlet and an open opening; A circuit board, which is fixedly connected to the oxygen storage tank and seals the opening; A gas pressure sensor is connected to the circuit board and is located inside the opening; The oxygen injection valve seat is provided with an air inlet connected to the oxygen outlet, an oxygen supply outlet for supplying oxygen to the outside, and a breathing sensor interface for connecting an external breathing sensor; an oxygen outlet channel is formed between the air inlet and the oxygen supply outlet. A respiratory feedback channel is formed between the oxygen supply port and the respiratory sensor interface; An electrically controlled valve is used to control the opening and closing of the oxygen supply channel and the respiratory feedback channel.

2. The oxygen supply component built into the gas pressure sensor according to claim 1, characterized in that, Also includes: The controller is used to receive the pressure signal generated by the respiratory sensor connected to the external respiratory sensor interface and control the electronically controlled valve; When the breathing sensor is under negative pressure, the electronically controlled valve is energized, and the oxygen outlet channel is opened, and the breathing feedback channel is opened after being closed for a preset time; when the breathing sensor is under positive pressure, the electronically controlled valve is de-energized, and the oxygen outlet channel is closed.

3. The oxygen supply component built into the gas pressure sensor according to claim 1, characterized in that, Also includes: A pressure reducing valve mounting groove is provided on the side of the oxygen injection valve seat at the breathing feedback channel, and a pressure reducing valve is provided in the pressure reducing valve mounting groove.

4. The oxygen supply component built into the gas pressure sensor according to claim 1, characterized in that, The circuit board is fixedly connected to the oxygen storage tank by fasteners.

5. The oxygen supply component built into the gas pressure sensor according to claim 1, characterized in that, A sealing ring is provided between the circuit board and the opening of the oxygen storage tank.

6. The oxygen supply component built into the gas pressure sensor according to claim 1, characterized in that, Also includes: A breathing sensor, which is connected to the circuit board and positioned near the breathing sensor interface, and connected to the breathing sensor interface via a conduit: and / or, 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 oxygen supply component built into the gas pressure sensor according to claim 1, characterized in that, Also includes: A filter is installed on the external pipe of the oxygen supply port.

8. The oxygen supply component built into the gas pressure sensor according to any one of claims 1 to 7, characterized in that, The air inlet is located on one side of the oxygen injection valve seat and is positioned close to the oxygen storage tank; the oxygen supply port and the breathing sensor interface are located on the other side of the oxygen injection valve seat.

9. An oxygen generator, characterized in that, It includes the oxygen supply component built into the gas pressure sensor as described in any one of claims 1 to 8.

10. The oxygen generator according to claim 9, characterized in that, Also includes: The main frame has a heat dissipation cavity and an installation cavity inside. One side of the heat dissipation cavity is connected to the installation cavity. The oxygen storage tank of the oxygen supply component is located in the installation cavity. The circuit board, gas pressure sensor, oxygen injection valve seat and electric control valve of the oxygen supply component are located in the heat dissipation cavity. One end of the circuit board extends into the installation cavity and is connected to the oxygen storage tank.

Images