Oxygen generator testing device

Abstract

The utility model discloses an oxygen generator testing device, which comprises a bearing part provided with a bearing position for bearing an oxygen generator to be tested; the supporting piece is arranged on the bearing piece; the test box is arranged on the supporting piece; the test box comprises a box body, a control mainboard, a gas distribution control assembly, a detection assembly and a man-machine interaction assembly. The gas distribution control assembly, the detection assembly and the man-machine interaction assembly are respectively and electrically connected with the control mainboard, the gas distribution control assembly comprises an oxygen access end connected with an oxygen output port of a detected oxygen generator through a pipeline and a control valve for distributing accessed oxygen to the detection assembly, and the control valve is controlled by the control mainboard. According to the utility model, the oxygen output port of the detected oxygen generator is connected with the gas distribution control assembly of the test box through the pipeline, the gas distribution control assembly is controlled by the control mainboard to distribute the accessed oxygen to the corresponding detection assemblies, and the detection assemblies feed various detection signals back to the control mainboard. Therefore, automatic testing of the tested oxygen generator is realized, and the testing efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of detection and testing device technology, specifically relating to a testing device for household and commercial oxygen concentrators. Background Technology

[0002] Besides their use in emergencies, oxygen concentrators are also essential health devices for many people with chronic diseases, such as pregnant women, white-collar workers, students, those in a sub-healthy state, those who engage in long-term mental labor, the elderly, and those suffering from respiratory or cardiovascular diseases. Therefore, with continuous technological advancements and improved living standards, people's demand for health is gradually increasing, and oxygen inhalation is becoming an important means of home and community rehabilitation. Furthermore, inhaling pure oxygen can promote blood circulation, improve mental clarity, eliminate fatigue, restore bodily functions, and effectively enhance work efficiency. Consequently, home oxygen concentrators are proliferating in daily life and the workplace, and owning a home oxygen concentrator has become a healthy lifestyle choice.

[0003] According to the "General Technical Specifications for Medical Molecular Sieve Oxygen Generators," oxygen produced using air as raw material and through molecular sieve pressure swing adsorption (PSA) technology should have an oxygen concentration of 90%–96%. If the oxygen concentration fluctuates significantly or remains below 90% for an extended period during oxygen inhalation, it can not only cause discomfort but may also result in ineffective oxygen therapy. Meanwhile, as an important medical auxiliary device, excellent performance parameters are an essential quality requirement. However, the quality of oxygen concentrators on the market varies greatly. Therefore, how to reliably test the performance of various aspects of an oxygen concentrator, or how to quickly identify product quality issues during the overall testing phase, with traceable test data, has become a growing concern for manufacturers. Summary of the Invention

[0004] This utility model provides an oxygen concentrator testing device, aiming to improve the testing efficiency of oxygen concentrators. The technical solution adopted by this utility model is as follows:

[0005] An oxygen generator testing device, comprising:

[0006] The carrier component has a bearing position to support the oxygen generator under test;

[0007] A support member is disposed on the load-bearing member;

[0008] The test chamber is mounted on the support member;

[0009] The test chamber includes a chamber body and a control main board, a gas distribution control component, a detection component, and a human-machine interaction component mounted on the chamber body. The gas distribution control component, the detection component, and the human-machine interaction component are electrically connected to the control main board. The gas distribution control component includes an oxygen inlet connected to the oxygen output port of the oxygen generator under test via a pipeline and a control valve that distributes the inlet oxygen to the detection component. The control valve is controlled by the control main board.

[0010] As a preferred technical solution, the gas distribution control component includes a first three-terminal gas valve, and the detection component includes a pressure sensor and a flow concentration sensor; the input end of the first three-terminal gas valve is connected to the oxygen inlet end, the first output end is connected to the pressure sensor, and the second output end is connected to the flow concentration sensor.

[0011] As a preferred technical solution, the flow concentration sensor includes a first flow concentration sensor for large flow detection and a second flow concentration sensor for small flow detection, and the gas distribution control component includes a second three-terminal gas valve; the input end of the second three-terminal gas valve is connected to the second output end of the first three-terminal gas valve, the first output end of the second three-terminal gas valve is connected to the first flow concentration sensor, and the second output end of the second three-terminal gas valve is connected to the second flow concentration sensor.

[0012] As a preferred technical solution, the test box also includes a communication circuit that connects the control motherboard and the communication port of the oxygen generator under test.

[0013] As a preferred technical solution, the oxygen generator testing device further includes an image acquisition module for acquiring model information of the oxygen generator under test, which is mounted on the carrier and faces the oxygen generator under test, and the image acquisition module is electrically connected to the control motherboard.

[0014] As a preferred technical solution, the oxygen generator testing device further includes a temperature acquisition module for acquiring the operating temperature of the oxygen generator under test, which is mounted on the carrier and faces the oxygen generator under test, and the temperature acquisition module is electrically connected to the control motherboard.

[0015] As a preferred technical solution, the oxygen generator testing device further includes a gear ring, a gear, a motor, and a mounting component. The gear ring is arranged to rotate around the bearing position. The mounting component is fixedly arranged above the bearing component. The motor is arranged on the mounting component with its drive shaft pointing downwards and passing through the mounting component. The gear is connected to the drive shaft of the motor below the mounting component and meshes with the gear ring. The temperature acquisition module is fixedly arranged on the gear ring.

[0016] As a preferred technical solution, the oxygen generator testing device further includes an image acquisition bracket, and the image acquisition module is fixedly mounted on the mounting component via the image acquisition bracket.

[0017] As a preferred technical solution, the test box also includes indicator lights, which are disposed on the box body and electrically connected to the control motherboard.

[0018] As a preferred technical solution, the human-computer interaction component is a touch screen, and the temperature acquisition module is a thermal imaging module.

[0019] The beneficial effects of this utility model include: the test chamber is set on the support component that carries the oxygen generator under test, and integrates a control motherboard, a gas distribution control component, a detection component, and a human-machine interaction component, thus possessing an automatic testing function; during testing, the oxygen output port of the oxygen generator under test is connected to the gas distribution control component of the test chamber through a pipeline, and then the control motherboard controls the gas distribution control component to distribute the incoming oxygen to the corresponding detection component, and then the detection component feeds back various detection signals to the control motherboard; the human-machine interaction component is used for inputting commands, setting parameters, and displaying test results, thereby realizing automated testing of the oxygen generator under test; compared with the prior art, which uses various handheld detection instruments to perform tests item by item, the oxygen generator testing device provided by this utility model significantly improves testing efficiency, and also facilitates the management and presentation of test results. Attached Figure Description

[0020] To more clearly illustrate the embodiments of this utility model, the accompanying drawings used in the description of the embodiments or the prior art will be briefly described below.

[0021] Figure 1 This is a perspective view of the oxygen generator testing device provided in an embodiment of this utility model.

[0022] Figure 2 This is a side view of the oxygen generator testing device provided in this embodiment of the utility model (the test box part is in perspective).

[0023] Figure 3 This is a top view of the oxygen generator testing device provided in this embodiment of the utility model (the test chamber part is a perspective view).

[0024] Figure 4 This is a test control principle diagram of the oxygen generator testing device provided in this embodiment of the utility model.

[0025] Figure 5 This is a diagram showing the internal structure of the test chamber of the oxygen generator testing device provided in this embodiment of the utility model.

[0026] Figure 6This is an exploded view of the functional components in the test chamber of the oxygen generator testing device provided in this embodiment of the utility model. Detailed Implementation

[0027] To make the technical solution of the present invention clearer and its technical advantages more apparent, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of the present invention.

[0028] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. For ease of explanation, the orientations are defined in conjunction with the drawings. These orientation definitions are merely for the purpose of clearly describing the relative positional relationships and are not intended to limit the actual orientation of the product or device during production, use, or sale. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Moreover, in the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0029] Combination Figures 1 to 3 As shown, as a basic implementation, the oxygen generator testing device 100 provided in this embodiment includes: a carrier 10, a support 20, and a test chamber 30. The carrier 11 is plate-shaped, with a bearing position 11 for supporting the oxygen generator 200 under test located in the center of its upper surface; the support 20 is a vertical bracket, fixedly mounted above the carrier 10 and located around the bearing position 11; the test chamber 30 is fixedly mounted on the support 20.

[0030] The test chamber 30 is used to test the oxygen generator 200 placed on the support position 11, mainly to test whether the oxygen output of the oxygen generator 200 meets the standards. Combined with... Figure 5 and Figure 6As shown, the test chamber 30 includes a chamber 31, a control main board 32, a gas distribution control component 33, a detection component 34, and a human-machine interface component 35. The human-machine interface component 35 is a touch screen, located on the front surface of the chamber 31; the control main board 32, the gas distribution control component 33, and the detection component 34 are located inside the chamber 31; the control main board 32 integrates testing and control software, and the gas distribution control component 33, the detection component 34, and the human-machine interface component 35 are electrically connected to the control main board 32; the gas distribution control component 33 includes an oxygen inlet and at least one control valve, the oxygen inlet being exposed or extending from the chamber 31, and is used to connect to the oxygen output port of the oxygen generator 200 under test through a pipeline, thereby introducing oxygen from the oxygen generator 200 under test into the test chamber 30; at least one control valve is controlled by the control main board 32 and is used to distribute the incoming oxygen to the detection component 34 for relevant testing.

[0031] The oxygen concentrator testing device 100 provided in the above embodiment has a testing chamber 30 mounted on a support member 10 that carries the oxygen concentrator 200 under test. It integrates a control motherboard 32, a gas distribution control component 33, a detection component 34, and a human-machine interface component 35, thereby achieving automatic testing. During testing, the oxygen output port of the oxygen concentrator 200 under test is connected to the gas distribution control component 33 of the testing chamber 30 via a pipeline. The control motherboard 32 then controls the gas distribution control component 33 to distribute the incoming oxygen to the corresponding detection component. The detection component then feeds back various detection signals to the control motherboard. The human-machine interface component is used for inputting commands, setting parameters, and displaying test results, thereby achieving automated testing of the oxygen concentrator under test. Compared to the prior art, which involves using handheld testing instruments to perform tests item by item, the oxygen concentrator testing device provided by this invention significantly improves testing efficiency and facilitates the management and presentation of test results.

[0032] In this embodiment, the test chamber 30 mainly tests the oxygen generator 200 under test, including the detection of its output oxygen pressure, flow rate and concentration.

[0033] As an optional implementation method, combined with Figure 4 As shown ( Figure 4(The dashed line represents the airflow direction, and the solid line represents the electrical signal direction). The gas distribution control component 33 includes a first three-terminal gas valve 331 and a second three-terminal gas valve 332. The detection component 34 includes a pressure sensor 341, a first flow concentration sensor 342, and a second flow concentration sensor 343. The input end of the first three-terminal gas valve 331 is connected to the oxygen inlet of the test chamber 30. The first output end of the first three-terminal gas valve 331 is connected to the pressure sensor 341. The second output end of the first three-terminal gas valve 331 is connected to the input end of the second three-terminal gas valve 332. The first output end of the second three-terminal gas valve 332 is connected to the first flow concentration sensor 342. The second output end of the second three-terminal gas valve 332 is connected to the second flow concentration sensor 343.

[0034] The first three-terminal air valve 331 is closed, or its first output terminal is opened, or its second output terminal is opened under the control of the main control board 32; similarly, the second three-terminal air valve 332 is closed, or its first output terminal is opened, or its second output terminal is opened under the control of the main control board 32.

[0035] Furthermore, the first flow concentration sensor 342 and the second flow concentration sensor 343 are sensors that combine flow detection and concentration detection; as an alternative implementation, the flow concentration sensor can be replaced by a dedicated flow sensor and a dedicated concentration sensor connected in series.

[0036] Moreover, in the above implementation, the flow concentration sensor includes a first flow concentration sensor 342 for detecting large flow rates and a second flow concentration sensor 343 for detecting small flow rates. The purpose is to use the second flow concentration sensor 343 for detecting relatively small flow rates when testing small oxygen concentrators (e.g., home oxygen concentrators) and the first flow concentration sensor 342 for detecting relatively large flow rates when testing large oxygen concentrators (e.g., commercial oxygen concentrators).

[0037] See also Figure 4 The test box 30 also includes a communication circuit 36 ​​connecting the control motherboard 32 and the communication port of the oxygen generator under test 200. This communication circuit 36 ​​is preferably a 485 communication circuit. In this embodiment, the test box 30 and the oxygen generator under test 200 are connected via the communication circuit 36. The human-machine interface component 35, the control motherboard 32, and the communication circuit 36 ​​of the test box 30 can be used to control the operation of the oxygen generator under test 200, thereby achieving automatic control of the oxygen generator under test from one end of the test box 30.

[0038] See Figures 1 to 4The oxygen concentrator testing device 100 provided in this embodiment also includes an image acquisition module 40, which is mounted on the support 10 and faces the oxygen concentrator 200 under test. The image acquisition module 40 is electrically connected to the control motherboard and is used to acquire the model information of the oxygen concentrator 200 under test. Specifically, the image acquisition module 40 is a barcode scanner used to scan the barcode or QR code on the oxygen concentrator 200 under test placed on the support 11, thereby acquiring the model information of the oxygen concentrator 200 under test and feeding it back to the control motherboard 32. The control motherboard 32 can control the gas distribution control component 33 to configure the corresponding test mode according to the model information of the oxygen concentrator 200 under test. For example, when the oxygen generator 200 under test is identified as a small oxygen generator, the second three-terminal gas valve 332 is controlled to open the second output terminal of the second flow concentration sensor 343; when the oxygen generator 200 under test is identified as a large oxygen generator, the second three-terminal gas valve 332 is controlled to open the first output terminal of the first flow concentration sensor 342.

[0039] See you again Figures 1 to 4 The oxygen generator testing device 100 provided in this embodiment also includes a temperature acquisition module 50 for acquiring the working temperature of the oxygen generator 200 under test. The module is mounted on the support 10 and faces the oxygen generator 200 under test. The temperature acquisition module 50 is electrically connected to the control motherboard 32, and the temperature acquisition module 50 is preferably a thermal imaging module.

[0040] See Figures 1 to 3 As shown, the oxygen concentrator testing device 100 provided in this embodiment also includes a gear ring 61, a gear 62, a motor 63, a mounting component 64, and an image acquisition bracket 65. An annular groove is formed around the support position on the support component 10. The gear ring 61 is disposed within the annular groove and rotates around the support position 11. The mounting component 64 is fixedly disposed above the support component 10. The motor 63 is disposed on the mounting component 64, with its drive shaft passing downwards through the mounting component 64. The gear 62 is connected to the drive shaft of the motor 63 below the mounting component 64. The gear 62 meshes with the gear ring 61, thereby driving the gear ring 61 to rotate. The temperature acquisition module 50 is fixedly disposed on the gear ring 61. When the temperature acquisition module 50 rotates with the gear ring 61, it can acquire the working temperature of the oxygen concentrator 200 under test for one revolution, making the temperature acquisition data more comprehensive. Furthermore, the image acquisition module 40 is fixedly disposed on the mounting component 64 via the image acquisition bracket 65.

[0041] See Figures 1 to 4As shown, the oxygen generator testing device 100 provided in this embodiment also includes an indicator light 37 in its test chamber 30, which is mounted on the chamber 31 and electrically connected to the control main board 32. When one or more data detected by the detection component 34 are determined by the control main board 32 to be substandard, the control main board 32 issues a warning signal and controls the corresponding indicator light 37 to illuminate; and when the temperature signal collected by the temperature acquisition module 50 exceeds the standard, the control main board 32 issues a warning signal and controls the corresponding indicator light 37 to illuminate.

[0042] The following example illustrates the operation of the oxygen generator testing device described above:

[0043] 1. Power on the testing device, log in to the software with your account and password, and set the acquisition parameters, oxygen concentration, flow rate, pressure, and temperature range for the current model. Assume the following settings: upper limit for oxygen concentration: 96%, lower limit: 90%; upper limit for flow rate: 41 L / min, lower limit: 39 L / min; upper limit for pressure: 70 kPa, lower limit: 30 kPa; upper limit for temperature: 60℃, lower limit: 0℃.

[0044] 2. Connect the oxygen output port of the oxygen generator 200 under test to the gas distribution control component 33 of the test chamber 30 through a pipeline.

[0045] 3. The communication port of the oxygen generator 200 under test is connected to the control board 32 of the test box 30 via the communication circuit 37.

[0046] 4. Use the image acquisition module 40 (barcode scanner) to scan the QR code on the body of the oxygen generator 200 under test. The software system integrated on the control motherboard 32 will automatically read the current model based on the QR code content, export the test parameters set in step 1, and send a command to start the oxygen generator 200 under test to begin the test.

[0047] 5. When the oxygen concentrator is in the initial startup phase, the concentration, flow rate, and pressure parameters have not yet reached stable values. Therefore, at the beginning of the test, only data are collected, and no judgment is made as to whether the parameters exceed the upper or lower limits.

[0048] 6. The first test item is pressure. The pressure and concentration flow rate test methods conflict, so pressure needs to be tested separately. Set a pressure test time. After the timing module reaches the set time, it sends a signal to the control motherboard to control the gas distribution control component 33 to open the corresponding gas valve and the corresponding output terminal.

[0049] 7. During the test, data is acquired and recorded once every second, and three curves of oxygen concentration, flow rate and pressure changing over time are plotted. The rate of change of the curves can characterize the stability of oxygen output from the oxygen generator.

[0050] 8. After the set test time is reached, the system will automatically give the final judgment result, and the indicator light will light up at the same time to indicate whether the final result is qualified or unqualified.

[0051] 9. At the same time, the temperature acquisition module 50 monitors the working temperature of the oxygen generator 200 under test in real time and issues a warning when necessary. Compared with handheld temperature guns for inspection and temperature measurement, the temperature monitoring equipment of this utility model has the characteristics of being more timely and faster.

[0052] The above are preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. An oxygen generator testing device, characterized by, The device comprises: a bearing part, which has a bearing position for bearing an oxygen generator to be tested; a supporting part, which is arranged on the bearing part; a test box, which is arranged on the supporting part; the test box comprises a box body and a control mainboard, a gas distribution control assembly, a detection assembly and a human-computer interaction assembly arranged on the box body; the gas distribution control assembly, the detection assembly and the human-computer interaction assembly are electrically connected with the control mainboard respectively; the gas distribution control assembly comprises an oxygen inlet end connected with an oxygen output port of the oxygen generator to be tested through a pipeline and a control valve for distributing the oxygen accessed to the detection assembly; the control valve is controlled by the control mainboard.

2. The oxygen generator testing device of claim 1, wherein, The gas distribution control assembly comprises a first three-terminal gas valve; the detection assembly comprises a pressure sensor and a flow concentration sensor; an input end of the first three-terminal gas valve is connected with the oxygen inlet end; a first output end of the first three-terminal gas valve is connected with the pressure sensor; and a second output end of the first three-terminal gas valve is connected with the flow concentration sensor.

3. The oxygen generator testing device of claim 2, wherein, The flow concentration sensor comprises a first flow concentration sensor for large flow detection and a second flow concentration sensor for small flow detection; the gas distribution control assembly comprises a second three-terminal gas valve; an input end of the second three-terminal gas valve is connected with the second output end of the first three-terminal gas valve; a first output end of the second three-terminal gas valve is connected with the first flow concentration sensor; and a second output end of the second three-terminal gas valve is connected with the second flow concentration sensor.

4. The oxygen generator testing device of claim 1, wherein, The test box further comprises a communication circuit connected with the control mainboard and a communication port of the oxygen generator to be tested.

5. The oxygen generator testing device of claim 1, wherein, The device further comprises an image acquisition module for acquiring model information of the oxygen generator to be tested, which is arranged on the bearing part and faces the oxygen generator to be tested; the image acquisition module is electrically connected with the control mainboard.

6. The oxygen generator testing device of claim 5, wherein, The device further comprises a temperature acquisition module for acquiring working temperature of the oxygen generator to be tested, which is arranged on the bearing part and faces the oxygen generator to be tested; the temperature acquisition module is electrically connected with the control mainboard.

7. The oxygen generator testing device of claim 6, wherein, The device further comprises a gear ring, a gear, a motor and a mounting part; the gear ring is arranged around the bearing position and rotates around the bearing position; the mounting part is fixedly arranged above the bearing part; the motor is arranged on the mounting part and the driving shaft of the motor penetrates through the mounting part downwardly; the gear is connected with the driving shaft of the motor below the mounting part and meshes with the gear ring; the temperature acquisition module is fixedly arranged on the gear ring.

8. The oxygen generator testing device of claim 7, wherein, The device further comprises an image acquisition support; the image acquisition module is fixedly arranged on the mounting part through the image acquisition support.

9. The oxygen generator testing device of claim 1, wherein, The test box further comprises an indicating lamp, which is arranged on the box body and is electrically connected with the control mainboard.

10. The oxygen generator testing device of claim 6, wherein, The human-computer interaction assembly is a touch screen; and the temperature acquisition module is a thermal imaging module.

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