Automatic calibration tool for voltage and pressure of oxygen generator

Abstract

The utility model relates to the technical field of oxygenerators, in particular to an automatic calibration tool for voltage and pressure of an oxygenerator. The driving device is fixedly arranged on the workbench, a pressing plate is arranged at the moving end of the driving device, a plurality of pressing rods are arranged on the face, close to the working face of the workbench, of the pressing plate, and the pressing rods are perpendicular to the working face of the workbench; the electric control plate is placed on the working face of the workbench and corresponds to the pressing plate in position, and when the pressing plate is pressed downwards, the multiple pressing rods press the electric control plate; the ventilation pipeline is arranged on the pressing plate and located on the same straight line with a pressure sensor on the electric control plate, the ventilation pipeline comprises an air pipe, the two ends of the air pipe are a closed end and a ventilation end respectively, the ventilation end is communicated with an air source, and when the pressing plate presses downwards and the pressing rod makes contact with the electric control plate, the closed end makes contact with the pressure sensor and is sealed; and measuring the pressure of the gas at the moment and calibrating as a corresponding system.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen concentrators, in particular to an automatic calibration tool for voltage and pressure of an oxygen concentrator. Background Art

[0002] Existing medical oxygen concentrators generally require testing of the device's power supply voltage and the system's internal pressure. When the voltage falls below the threshold for stable operation, or when the system's internal pressure is too high or too low, preventing the concentrator from delivering oxygen at the required concentration, a user prompt or alarm is issued. Therefore, accurate measurement of the concentrator's internal components is crucial. Traditional calibration methods require operators to manually adjust the voltage and pressure, then read and record the data. This process is cumbersome and time-consuming, and manual operation is easily affected by factors such as the operator's skill level and fatigue, leading to significant errors in the calibration results. Furthermore, the accuracy and stability of some existing calibration equipment cannot meet the requirements of modern oxygen concentrators, resulting in inaccurate calibration results.

[0003] Therefore, the present application develops an automatic calibration tool for voltage and pressure of an oxygen concentrator to solve the problems existing in the prior art. Utility Model Content

[0004] The utility model aims to provide an automatic calibration tool for the voltage and pressure of an oxygen concentrator, so as to solve the problem in the prior art that the oxygen concentrator cannot output oxygen with a concentration that meets the standard due to inaccurate calibration.

[0005] The technical solution of the utility model is: an automatic calibration tool for voltage and pressure of an oxygen concentrator, comprising:

[0006] Workbench;

[0007] A driving device is fixedly mounted on the workbench, wherein a pressing plate is provided at a movable end of the driving device, and a plurality of pressing rods are provided on a side of the pressing plate close to the working surface of the workbench, wherein the plurality of pressing rods are perpendicular to the working surface of the workbench;

[0008] An electric control board is placed on the working surface of the workbench and corresponds to the position of the pressing plate. When the pressing plate is pressed down, the plurality of pressing rods press the electric control board;

[0009] The ventilation pipeline is arranged on the pressure plate and is in the same line as the pressure sensor on the electronic control board. The ventilation pipeline includes an air pipe, and the two ends of the air pipe are respectively a closed end and a ventilation end. The ventilation end is connected to the air source. When the pressure plate is pressed down and the pressure rod contacts the electronic control board, the closed end contacts and seals with the pressure sensor, and the pressure of the gas at this time is measured and calibrated as the corresponding coefficient.

[0010] Preferably, the plurality of pressure rods are distributed on the pressure plate, and when one end of the pressure rod contacts the electric control board, the plurality of pressure rods are respectively located at the middle and four edges of the surface of the electric control board.

[0011] Preferably, the ventilation pipeline also includes a spring and a sleeve, the sleeve is fixed on the pressure plate, the air pipe is located in the sleeve and is connected to the sleeve through a spring, the spring is sleeved on the outer surface of the air pipe, and one end of the spring is connected to the air pipe, and the other end is connected to the sleeve.

[0012] Preferably, the pressure sensor includes a support rod and a sealing surface. When the air pipe is close to the electric control board and the sealed end contacts the sealing surface, the support rod is inserted into the air pipe.

[0013] Preferably, the sealed end is made of a flexible material. When the sealed end contacts the sealed surface, the plurality of pressure rods remain suspended and do not contact the electric control board. When the spring is compressed, the plurality of pressure rods contact and press the electric control board.

[0014] Preferably, the workbench is provided with a control panel and an electric meter for controlling the start and stop of the driving device and detecting the air pressure.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] (1) The trachea is in contact with the pressure sensor and sealed. The pressure sensor detects the pressure of the gas in the trachea and calculates the coefficient of the pressure sensor conversion at this time, thereby achieving calibration and avoiding errors caused by indirect measurement;

[0017] (2) Improve the anti-interference ability through gas and pressure sensors to prevent the accuracy of calibration from being affected by external environment or internal pressure during the calibration process;

[0018] (3) By inserting the vertical rod, the contact position between the trachea and the pressure sensor can be accurately located, and the sealing performance can be improved to prevent gas leakage, thereby improving the accuracy of calibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a schematic diagram of the structure of an automatic calibration tool for voltage and pressure of an oxygen concentrator according to the present invention;

[0021] Figure 2 This is a schematic structural diagram of the driving device of the utility model;

[0022] Figure 3 for Figure 2A is an enlarged schematic diagram;

[0023] Figure 4 This is a front view of the driving device of the utility model;

[0024] Figure 5 This is a positional relationship diagram of the pressing plate and the pressing rod of the present utility model;

[0025] Figure 6 This is a structural schematic diagram of the ventilation pipeline described in the present invention.

[0026] Among them: 1. Workbench; 11. Control panel; 12. Electric meter; 2. Drive device; 3. Pressure plate; 4. Pressure rod; 5. Electric control panel; 6. Ventilation pipe; 61. Air pipe; 611. Sealed end; 612. Ventilation end; 62. Spring; 63. Sleeve; 7. Pressure sensor; 71. Support rod; 72. Sealed surface. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0028] like Figures 1-6 As shown, an automatic calibration tool for the voltage and pressure of an oxygen concentrator includes a workbench 1, a drive device 2, an electric control board 5 and a ventilation pipe 6. The drive device 2 and the electric control board 5 are both fixed on the workbench 1, and a pressing plate 3 is provided at the movable end of the drive device 2. A plurality of pressing rods 4 are distributed at one end of the pressing plate 3 close to the working surface of the workbench 1, and the electric control board 5 corresponds to the position of the pressing plate 3. When the pressing plate 3 is pressed down, the pressing plate 3 can completely cover the electric control board 5. At this time, the pressing rods 4 distributed on the pressing plate 3 respectively contact the middle and four edges of the electric control board 5 and press the electric control board 5 tightly, keeping the electric control board 5 in the calibration process. 5 has good stability and will not be affected by the air pressure to increase the calibration error. The ventilation pipe 6 is also matched with the pressure sensor 7. The ventilation end 612 of the ventilation pipe 6 is connected to the air source, and the closed end 611 is in contact with the pressure sensor 7 and sealed. The air pressure at this time is detected and recorded, and the conversion coefficient of the pressure sensor 7 is calculated. The accuracy and detection precision of the pressure sensor 7 are improved by the calculated conversion coefficient. If the conversion coefficient is inaccurate, it will cause deviation in the measurement result, affect the measurement accuracy, and cannot ensure that the oxygen concentrator can accurately control the oxygen pressure and flow during operation.

[0029] In this embodiment, Figure 1-Figure 3As shown, the ventilation pipe 6 and the pressure sensor 7 are on the same straight line. The pressure sensor 7 includes a support rod 71 and a sealing surface 72. When the air pipe 61 is close to the electric control board 5, the air pipe 61 will be inserted on the support rod 71, and the sealing surface 72 is in contact with the sealed end 611. The support rod 71 plays a supporting role in the air pipe 61, ensuring a stable connection between the air pipe 61 and the pressure sensor 7. By inserting the support rod 71, the contact position of the air pipe 61 and the sensor can be accurately located, thereby improving the accuracy of the measurement. At the same time, the support rod 71 and the inner wall of the air pipe 61 are tightly matched to form a seal to prevent gas leakage during the measurement process, thereby ensuring the accuracy and reliability of the measurement results. In addition, the support rod 71 can guide the airflow to be evenly distributed in the air pipe 61, reducing the measurement error caused by uneven airflow, thereby affecting the calibration.

[0030] like Figure 4-Figure 6 As shown, in order to enhance the airtightness during the calibration process, the ventilation pipeline 6 also includes a spring 62 and a sleeve, wherein the sleeve is fixed on the pressure plate 3, the air pipe 61 is arranged in the sleeve 63, and is connected to the sleeve 63 through the spring 62. The spring 62 is sleeved on the outer surface of the air pipe 61, one end is connected to the air pipe 61, and the other end is connected to the sleeve. Initially, the spring 62 is not under force, and the pressure plate 3 gradually approaches the electric control board 5. When the sealed end 611 contacts the sealed surface 72, the pressure rod 4 is still in a suspended state and does not contact the pressure sensor 7. The pressure rod 4 is suspended and does not contact The contact between the electric control board 5 can avoid direct compression or damage to the electric control board 5 due to mechanical stress and other reasons when the air pipe 61 and the pressure sensor 7 are tightly closed. When the pressure plate 3 continues to move, the spring 62 is deformed under the force, and the pressure rod 4 continues to move to press the electric control board 5. At this time, the support rod 71 is inserted into the air pipe 61, and the closed end 611 is in close contact with the closed surface 72. The contact between the closed end 611 and the closed surface 72 can ensure the effective transmission of air pressure and form a closed air pressure chamber, so that the air pressure can stably act around the sensor.

[0031] Furthermore, the sealed end 611 is made of a flexible material, which can better adapt to the shape and slight changes of the surface of the pressure sensor 7, ensuring a good seal during the connection process. In addition, the oxygen concentrator may generate vibrations or shocks during operation, causing damage to the pressure sensor 7 or affecting its measurement accuracy. The flexible sealed end 611 can absorb and disperse these mechanical stresses, play a role in buffering and shock absorption, thereby protecting the pressure sensor 7 and improving the accuracy of detection.

[0032] Furthermore, if Figure 1As shown, a control panel 11 and an electric meter 12 are provided on the workbench 1. The control panel 11 is used to control the start and stop of the driving device 2 and to observe the oxygen flow and oxygen concentration. The electric meter 12 includes a voltmeter and an ammeter. The ammeter and the voltmeter can detect the oxygen production efficiency in real time, so that the working status of the oxygen concentrator can be judged in time, which is convenient for timely adjustment.

[0033] The implementation principle of this embodiment is as follows:

[0034] When calibrating the voltage, the electric control board 5 is placed on the workbench 1, and the pressure plate 3 is controlled by the control panel 11 to move toward the electric control board 5 under the action of the driving device 2. When the support rod 71 is inserted into the air pipe 61 and the sealed end 611 contacts and deforms the sealed surface 72 of the pressure sensor 7, the pressure rod 4 also presses the electric control board 5 to prevent the electric control board 5 from shaking during the voltage calibration. At this time, air is ventilated into the air pipe 61 through the air source, and the pressure sensor 7 detects the value of the air pressure and calculates the coefficient of the value. The pressure in the oxygen concentrator is calculated by the coefficient, thereby realizing the detection of whether the oxygen pressure meets the standard at any time.

[0035] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they are not intended to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. An automatic calibration tool for voltage and pressure of an oxygen concentrator, characterized in that: include: Workbench (1); A driving device (2) is fixed on the workbench (1), a moving end of the driving device (2) is provided with a pressing plate (3), a side of the pressing plate (3) close to the working surface of the workbench (1) is provided with a plurality of pressing rods (4), and the plurality of pressing rods (4) are perpendicular to the working surface of the workbench (1); An electric control panel (5) is placed on the working surface of the workbench (1) and corresponds to the position of the pressing plate (3). When the pressing plate (3) is pressed downward, the plurality of pressing rods (4) press the electric control panel (5). The ventilation line (6) is arranged on the pressure plate (3) and is in the same straight line as the pressure sensor (7) on the electric control board (5). The ventilation line (6) includes an air pipe (61). The two ends of the air pipe (61) are a closed end (611) and a ventilation end (612). The ventilation end (612) is connected to the gas source. When the pressure plate (3) is pressed down and the pressure rod (4) contacts the electric control board (5), the closed end (611) contacts and seals the pressure sensor (7). The pressure of the gas at this time is measured and calibrated as a corresponding coefficient.

2. The automatic calibration tool for voltage and pressure of an oxygen concentrator according to claim 1, characterized in that: The plurality of pressure rods (4) are distributed on the pressure plate (3); when one end of the pressure rod (4) contacts the electric control board (5), the plurality of pressure rods (4) are respectively located in the middle and around the edges of the surface of the electric control board (5).

3. The automatic calibration tool for voltage and pressure of an oxygen concentrator according to claim 1, characterized in that: The ventilation pipeline (6) further comprises a spring (62) and a sleeve (63), wherein the sleeve (63) is fixedly mounted on the pressure plate (3), the air pipe (61) is located in the sleeve (63) and is connected to the sleeve (63) via the spring (62), the spring (62) is sleeved on the outer surface of the air pipe (61), and one end of the spring (62) is connected to the air pipe (61), and the other end is connected to the sleeve (63).

4. The automatic calibration tool for voltage and pressure of an oxygen concentrator according to claim 3 is characterized by: The pressure sensor (7) comprises a support rod (71) and a sealed surface (72); when the air pipe (61) approaches the electric control board (5) and the sealed end (611) contacts the sealed surface (72), the support rod (71) is inserted into the air pipe (61).

5. The automatic calibration tool for voltage and pressure of an oxygen concentrator according to claim 4, characterized in that: The sealed end (611) is made of a flexible material. When the sealed end (611) contacts the sealed surface (72), the plurality of pressure rods (4) remain in a suspended state and do not contact the electric control board (5). When the spring (62) is compressed, the plurality of pressure rods (4) contact and press the electric control board (5).

6. The automatic calibration tool for voltage and pressure of an oxygen concentrator according to claim 1, characterized in that: The workbench (1) is provided with a control panel (11) and an electric meter (12) for controlling the start and stop of the driving device (2) and detecting the air pressure.

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