Oxygen supply device and method

Abstract

The invention belongs to the aviation oxygen production technology, and relates to an oxygen supply device and method, the oxygen supply device comprises a compressor, an LED indicating lamp, an oxygen partial pressure sensor, a pressure sensor and a flow sensor, and also comprises a control function for starting and stopping the compressor. The portable oxygen system controller is characterized in that the portable oxygen system controller capable of being controlled in real time is achieved, a gas circuit is controlled to be turned off through an electromagnetic valve, the oxygen concentration in the flight environment is measured through an oxygen partial pressure sensor and a pressure sensor, and the controller processes feedback signals of the sensors and judges whether a compressor is started or not to carry out oxygen production. The oxygen supply flow is measured through the flow sensor, and the controller processes feedback signals of the sensor and judges whether the oxygen production power of the compressor is adjusted or not. The portable oxygen supply device solves the problem of insufficient plateau oxygen supply, further supplements the oxygen supply capacity of the oxygen system, improves the reliability of the plateau aircraft oxygen system, and improves the flight safety of the aircraft.

Description

Technical Field

[0001] The invention belongs to aviation oxygen technology and relates to an oxygen supply device and method. Background Art

[0002] Oxygen supply technology is an indispensable technology for modern aircraft oxygen systems.

[0003] Given that the current oxygen content in plateaus is low and the concentration cannot meet the normal breathing needs of cabin crew, the limited oxygen supply capacity of plateau aircraft has become a problem that needs to be urgently addressed worldwide. Summary of the invention

[0004] The purpose of the present invention is to provide an oxygen supply device and method to achieve real-time regulation of the oxygen supply in an oxygen system.

[0005] The technical solution of the present invention is:

[0006] The present invention provides an oxygen supply device, comprising: a controller, a compressor, a sieve bed, a mask, a pressure sensor, a flow sensor and an oxygen partial pressure sensor;

[0007] The compressor is used to provide compressed air to the sieve bed, and the sieve bed is used to generate oxygen based on the compressed air and provide it to the mask; the pressure sensor is used to detect the atmospheric pressure of the atmospheric environment where the mask is located, and the flow sensor and oxygen partial pressure sensor are used to detect the flow rate and oxygen partial pressure of the product gas provided by the sieve bed;

[0008] The controller is connected with the compressor, the pressure sensor, the flow sensor, and the oxygen partial pressure sensor;

[0009] The controller is used to control the start and stop of the compressor according to the oxygen partial pressure sensor and the pressure sensor measuring the oxygen concentration in the atmospheric environment where the mask is located;

[0010] The controller is also used to control the oxygen power of the compressor through the oxygen supply flow measured by the flow sensor.

[0011] Optionally, the controller is specifically used to obtain the oxygen supply concentration of the gas output by the sieve bed based on the measurement results of the oxygen partial pressure sensor and the pressure sensor, and compare the oxygen supply concentration with a preset oxygen concentration threshold. If the oxygen supply concentration is lower than the preset oxygen concentration threshold, the controller supplies power to the compressor for an oxygen production cycle; if the oxygen supply concentration is not lower than the preset oxygen concentration threshold, the controller cuts off the power supply to the compressor.

[0012] Optionally, the controller is specifically used to calculate the ratio of the oxygen partial pressure sensor value to the pressure sensor value to obtain the oxygen supply concentration.

[0013] Optionally, the controller is specifically used to compare the flow detection result of the flow sensor with a preset flow threshold;

[0014] When the flow detection result is less than the preset flow threshold, the controller increases the operating power of the compressor.

[0015] Optionally, the oxygen supply device further includes: an oxygen concentration indicator light m and an oxygen flow indicator light n; the controller is also connected to the oxygen concentration indicator light m and the oxygen flow indicator light n;

[0016] The controller is also used to control the oxygen concentration indicator light m to light up red when the oxygen supply concentration is lower than the preset oxygen concentration threshold; to control the oxygen concentration indicator light m to light up green when the oxygen supply concentration is not lower than the preset oxygen concentration threshold; to control the oxygen flow indicator light n to light up red when the flow detection result is less than the preset flow threshold; and to control the oxygen flow indicator light n to light up green when the flow detection result is not less than the preset flow threshold.

[0017] Optionally, the preset oxygen concentration threshold is 21%.

[0018] Optionally, the preset flow threshold is 3m 3 / min.

[0019] 1) When the oxygen concentration is less than 21%, the controller connects the compressor to the power supply, and the indicator light m lights up red; when the oxygen concentration is greater than 21%, the controller disconnects the compressor from the power supply, and the indicator light m lights up green.

[0020] 2) When the oxygen flow rate is less than 3m 3 / min, the controller will increase the operating power of the compressor through software regulation, and the indicator light n will light up red; when the oxygen flow rate is greater than 3m 3 / min, the controller will not interfere with the operation of the compressor, and the indicator light n will light green.

[0021] The present invention also provides an oxygen supply method, which is implemented using the device described in any one of the above.

[0022] The present invention provides an oxygen supply device and method, which is a control device and method for the oxygen system of a plateau aircraft system. Through circuit design, the system can work stably and be easily adjusted to meet the adjustment requirements of the oxygen supply function during high-altitude flight, and the oxygen system has higher reliability and safety. The compressor, LED indicator, sensor, solenoid valve, and control circuit are now integrated into one, which effectively reduces the size of the oxygen supply machine and improves the portability of the oxygen supply device. The oxygen system controller of the present invention can well realize the adjustment function of the oxygen supply circuit through the control method of circuits and software, and meet the oxygen requirements in actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 Portable oxygen supply device controller and system interconnection diagram;

[0025] Figure 2 Portable oxygen supply device controller block diagram. DETAILED DESCRIPTION

[0026] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. The following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the protection scope of the specific claims of the present invention.

[0027] The oxygen supply device provided by the present invention is explained below in conjunction with the accompanying drawings.

[0028] The present invention provides an oxygen supply device, comprising: a controller, a compressor, a sieve bed, a mask, a pressure sensor, a flow sensor and an oxygen partial pressure sensor;

[0029] The compressor is used to provide compressed air to the sieve bed, and the sieve bed is used to generate oxygen based on the compressed air and provide it to the mask; the pressure sensor is used to detect the atmospheric pressure of the atmospheric environment where the mask is located, and the flow sensor and oxygen partial pressure sensor are used to detect the flow rate and oxygen partial pressure of the product gas provided by the sieve bed;

[0030] The controller is connected with the compressor, the pressure sensor, the flow sensor, and the oxygen partial pressure sensor;

[0031] The controller is used to control the start and stop of the compressor according to the oxygen partial pressure sensor and the pressure sensor measuring the oxygen concentration in the atmospheric environment where the mask is located;

[0032] The controller is also used to control the oxygen power of the compressor through the oxygen supply flow measured by the flow sensor.

[0033] Optionally, the controller is specifically used to obtain the oxygen supply concentration of the gas output by the sieve bed based on the measurement results of the oxygen partial pressure sensor and the pressure sensor, and compare the oxygen supply concentration with a preset oxygen concentration threshold. If the oxygen supply concentration is lower than the preset oxygen concentration threshold, the controller supplies power to the compressor for an oxygen production cycle; if the oxygen supply concentration is not lower than the preset oxygen concentration threshold, the controller cuts off the power supply to the compressor.

[0034] Optionally, the controller is specifically used to calculate the ratio of the oxygen partial pressure sensor value to the pressure sensor value to obtain the oxygen supply concentration.

[0035] Optionally, the controller is specifically used to compare the flow detection result of the flow sensor with a preset flow threshold;

[0036] When the flow detection result is less than the preset flow threshold, the controller increases the operating power of the compressor.

[0037] Optionally, the oxygen supply device further includes: an oxygen concentration indicator light m and an oxygen flow indicator light n; the controller is also connected to the oxygen concentration indicator light m and the oxygen flow indicator light n;

[0038] The controller is also used to control the oxygen concentration indicator light m to light up red when the oxygen supply concentration is lower than the preset oxygen concentration threshold; to control the oxygen concentration indicator light m to light up green when the oxygen supply concentration is not lower than the preset oxygen concentration threshold; to control the oxygen flow indicator light n to light up red when the flow detection result is less than the preset flow threshold; and to control the oxygen flow indicator light n to light up green when the flow detection result is not less than the preset flow threshold.

[0039] Optionally, the preset oxygen concentration threshold is 21%.

[0040] Optionally, the preset flow threshold is 3m 3 / min.

[0041] 1) When the oxygen concentration is less than 21%, the controller connects the compressor to the power supply, and the indicator light m lights up red; when the oxygen concentration is greater than 21%, the controller disconnects the compressor from the power supply, and the indicator light m lights up green.

[0042] 2) When the oxygen flow rate is less than 3m 3 / min, the controller will increase the operating power of the compressor through software regulation, and the indicator light n will light up red; when the oxygen flow rate is greater than 3m 3 / min, the controller will not interfere with the operation of the compressor, and the indicator light n will light green.

[0043] The present invention also provides an oxygen supply method, which is implemented using the device described in any one of the above.

[0044] like Figure 1 and 2As shown, the present invention provides a controller technology for a portable oxygen supply device, including a compressor, an LED indicator, an oxygen partial pressure sensor, a pressure sensor and a flow sensor, and also includes an alarm display for controlling the start and stop control function of the compressor, the gas path flow control logic, and the oxygen index. The main function is to power the compressor, the oxygen partial pressure sensor, the pressure sensor and the flow sensor, and to control the start and stop of the compressor by collecting and processing the signals of the oxygen partial pressure sensor, the pressure sensor and the flow sensor, and measuring the oxygen concentration in the cabin according to the oxygen partial pressure sensor and the pressure sensor; and to control the oxygen power of the compressor by the oxygen supply flow measured by the flow sensor.

[0045] The present invention provides a controller for a portable oxygen supply device. The controller is divided into a compressor start-stop control function and a gas circuit on-off control function, and mainly realizes the on-off of oxygen supply of an oxygen system and the oxygen flow control.

[0046] The portable oxygen supply device controller adopts electronic control integration technology. Its main functions are to power the compressor, LED indicator, oxygen partial pressure sensor, pressure sensor and flow sensor. It also collects and processes the signals of the oxygen partial pressure sensor, pressure sensor and flow sensor, measures the oxygen concentration in the cabin according to the oxygen partial pressure sensor and pressure sensor, and controls the start and stop of the compressor. It also controls the oxygen power of the compressor by measuring the oxygen supply flow rate through the flow sensor. At the same time, the controller monitors and adjusts the oxygen concentration and flow rate in real time to ensure that the oxygen output meets the predetermined requirements and achieves the safety and reliability of high-altitude flight.

[0047] To realize the start and stop control function of the compressor: the ambient atmospheric pressure is measured by the pressure sensor, and the oxygen pressure of the output gas of the oxygen supply device is measured by the oxygen partial pressure sensor. The controller collects and processes the signal fed back by the sensor to obtain the oxygen concentration of the output gas of the oxygen supply device. The calculated oxygen concentration is compared with the designed oxygen concentration threshold. If the oxygen concentration is lower than the actual use requirement, the controller will supply power to the compressor for oxygen production cycle; if the oxygen concentration reaches the actual use requirement, the controller will cut off the power supply to the compressor.

[0048] The specific implementation steps are as follows:

[0049] 1) The pressure sensor measures the cabin gas pressure;

[0050] 2) The oxygen partial pressure sensor measures the oxygen pressure output by the portable oxygen supply device;

[0051] 3) The controller collects signals from the pressure sensor and the oxygen partial pressure sensor;

[0052] 4) The controller calculates the ratio of the oxygen partial pressure sensor value to the pressure sensor value to obtain a value a;

[0053] 5) Compare the result of step 4) with the set threshold value b;

[0054] 51) If a<b, the controller turns on the compressor power supply;

[0055] 52) If a>b, the controller disconnects the compressor power supply.

[0056] The control function of the output gas flow of the portable oxygen supply device is realized: when the output gas flow is too low, the controller can adjust the operating power of the compressor.

[0057] The specific implementation steps are as follows:

[0058] 1) The flow sensor measures the oxygen flow at the output port of the portable oxygen supply device;

[0059] 2) Control the acquisition and processing of the signal of the flow sensor to obtain the value x;

[0060] 3) Compare the value x in step 2) with the designed flow threshold y;

[0061] 31) If x < y, the controller will increase the operating power of the compressor through software control;

[0062] 32) If x>y, the controller will not intervene in the operation of the compressor.

[0063] The function of LED indicator light display of the oxygen concentration signal and flow signal of the portable oxygen supply device is realized: the controller determines the oxygen concentration and oxygen flow, and controls the color of the indicator light through software regulation, which can intuitively indicate the current oxygen concentration (indicator light m) and oxygen flow (indicator light n) to the cabin occupants.

[0064] The specific lighting logic of the LED indicator is as follows:

[0065] 1) When the oxygen concentration value of the portable oxygen supply device is a<b, the indicator light m lights up red;

[0066] 2) When the oxygen concentration value of the portable oxygen supply device is a>b, the indicator light m lights up green;

[0067] 3) When the oxygen flow value x of the portable oxygen supply device is less than y, the indicator light n lights up red;

[0068] 4) When the oxygen flow value x of the portable oxygen supply device is greater than y, the indicator light n lights up green.

[0069] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. An oxygen supply device, characterized in that: include: Controllers, compressors, sieve beds, masks and pressure sensors, flow sensors and oxygen partial pressure sensors; The compressor is used to provide compressed air to the sieve bed, and the sieve bed is used to generate oxygen based on the compressed air and provide it to the mask; the pressure sensor is used to detect the atmospheric pressure of the atmospheric environment where the mask is located, and the flow sensor and oxygen partial pressure sensor are used to detect the flow rate and oxygen partial pressure of the product gas provided by the sieve bed; The controller is connected with the compressor, the pressure sensor, the flow sensor, and the oxygen partial pressure sensor; The controller is used to control the start and stop of the compressor according to the oxygen partial pressure sensor and the pressure sensor measuring the oxygen concentration in the atmospheric environment where the mask is located; The controller is also used to control the oxygen power of the compressor through the oxygen supply flow measured by the flow sensor.

2. The oxygen supply device according to claim 1, characterized in that: The controller is specifically used to obtain the oxygen supply concentration of the sieve bed output gas according to the measurement results of the oxygen partial pressure sensor and the pressure sensor, and compare the oxygen supply concentration with a preset oxygen concentration threshold. If the oxygen supply concentration is lower than the preset oxygen concentration threshold, the controller supplies power to the compressor for oxygen production cycle; if the oxygen supply concentration is not lower than the preset oxygen concentration threshold, the controller cuts off the power supply to the compressor.

3. The oxygen supply device according to claim 2, characterized in that: The controller is specifically used to calculate the ratio of the oxygen partial pressure sensor value to the pressure sensor value to obtain the oxygen supply concentration.

4. The oxygen supply device according to claim 2, characterized in that: The controller is specifically used to compare the flow detection result of the flow sensor with a preset flow threshold; When the flow detection result is less than the preset flow threshold, the controller increases the operating power of the compressor.

5. The oxygen supply device according to claim 4, characterized in that: Also includes: Oxygen concentration indicator light m and oxygen flow indicator light n; the controller is also connected to the oxygen concentration indicator light m and the oxygen flow indicator light n; The controller is also used to control the oxygen concentration indicator light m to light up red when the oxygen supply concentration is lower than the preset oxygen concentration threshold; to control the oxygen concentration indicator light m to light up green when the oxygen supply concentration is not lower than the preset oxygen concentration threshold; to control the oxygen flow indicator light n to light up red when the flow detection result is less than the preset flow threshold; and to control the oxygen flow indicator light n to light up green when the flow detection result is not less than the preset flow threshold.

6. The oxygen supply device according to claim 4, characterized in that: The preset oxygen concentration threshold is 30L / m 3 .

7. The oxygen supply device according to claim 4, characterized in that: The preset flow threshold is 20L / min.

8. An oxygen supply method, characterized in that: The method is implemented by using the device as described in any one of claims 1 to 7.

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