Pressure swing adsorption oxygen generator capable of intelligently adapting to altitude and control method of pressure swing adsorption oxygen generator

Abstract

The invention discloses an intelligent altitude-adaptive pressure swing adsorption oxygen generator and a control method thereof.The intelligent altitude-adaptive pressure swing adsorption oxygen generator comprises a shell, an oil-free compressor is arranged in the shell and connected with an electromagnetic switching valve through a pipeline, and the electromagnetic switching valve is connected with a double-molecular-sieve adsorption tower through a pipeline; the double-molecular sieve adsorption tower is connected with the oxygen storage tank through a pipeline, an output port is formed in one side of the oxygen storage tank, a main control board is arranged in the shell, a control panel is arranged on the outer surface of the shell, a power switch is arranged on the control panel, and a pressure sensor, an altitude sensor and a CPU processing center are arranged on the main control board; according to the altitude sensor technology, the altitude of the working environment of the oxygenerator is intelligently identified, and the parameter configuration of the oxygenerator is automatically adjusted to correspondingly match the current altitude, so that the oxygenerator can generate oxygen with the concentration meeting the standard requirement at each altitude.

Description

Technical Field

[0001] The present invention relates to the technical field of oxygen generators, and particularly relates to a pressure swing adsorption oxygen generator that intelligently adapts to altitude and a control method thereof. Background Art

[0002] An oxygen generator is a type of machine for producing oxygen. Its principle is to utilize air separation technology. Generally, since it is mostly used for oxygen production, people are accustomed to calling it an oxygen generator. Due to the wide uses of oxygen and nitrogen, oxygen generators are also widely applied in the national economy.

[0003] Because the oxygen generation principle of an oxygen generator is a device that uses the pressure swing adsorption characteristics of molecular sieves to adsorb nitrogen in compressed air and separate oxygen and nitrogen in the air, thereby increasing the oxygen concentration. The atmospheric pressure corresponding to this device varies greatly at different altitudes, which will directly affect the concentration of the generated oxygen. Conventional oxygen generators stipulate the usage environment requirements for oxygen generators to ensure the oxygen concentration requirement as: atmospheric pressure 86 kPa to 106 kPa (or below 1300 meters above sea level). This severely restricts the usage scenarios of oxygen generators, resulting in the inability of existing oxygen generators to be used normally at different altitudes. Summary of the Invention

[0004] The technical solution adopted by the present invention to solve the technical problem is: a pressure swing adsorption oxygen generator that intelligently adapts to altitude and a control method thereof, including a housing. An oil-free compressor is provided inside the housing. The oil-free compressor is connected to an electromagnetic switching valve through a pipeline. The electromagnetic switching valve is connected to a double molecular sieve adsorption tower through a pipeline. The double molecular sieve adsorption tower is connected to an oxygen storage tank through a pipeline. An output port is provided on one side of the oxygen storage tank. A main control board is provided inside the housing. A control panel is provided on the outer surface of the housing. A power switch is provided on the control panel. A pressure sensor, an altitude sensor, and a CPU processing center are provided on the main control board.

[0005] As a preferred technical solution of the present invention, a pressure regulating valve is provided between the oxygen storage tank and the output port.

[0006] As a preferred technical solution of the present invention, an infusion electromagnetic valve is provided at the bottom of the liquid storage tank, and the altitude sensor is an absolute pressure type micro pressure sensor.

[0007] As a preferred technical solution of the present invention, a control method for a pressure swing adsorption oxygen generator that intelligently adapts to altitude is as follows: T1. Start the power switch through the control panel;

[0008] T2. The altitude sensor on the main control board obtains the atmospheric pressure of the external environment, converts it into altitude through calculation, and transmits the altitude information to the CPU processing center;

[0009] T3. The CPU processing center calculates the required pressure value in the double molecular sieve adsorption tower at the current altitude based on the altitude information.

[0010] T4. The CPU processing center controls the electromagnetic switching valve according to the pressure value to change the pressure in the double molecular sieve adsorption tower.

[0011] T5. The double molecular sieve adsorption tower transports oxygen to the oxygen storage tank for caching.

[0012] T6. The oxygen in the oxygen storage tank is compressed and transported to the outside after the concentration reaches the specified value.

[0013] As a preferred technical solution of the present invention, the calculation method for converting to altitude in step 2 is: Q1 / Q2 = ε2 / ε1

[0014] Where: Q1 represents the exhaust volume in the plain area,

[0015] Q2 represents the exhaust volume in the high altitude area,

[0016] ε1 and ε2 respectively represent the compression ratios in the plain and high altitude areas.

[0017] As a preferred technical solution of the present invention, the calculation method for the required pressure value in the double molecular sieve adsorption tower (4) in step 3 is:

[0018] Flow rate calculation formula at different pressures:

[0019] Where: Q represents the flow rate,

[0020] S represents the minimum cross-sectional area,

[0021] ΔP represents the pressure difference,

[0022] P2 represents the gauge pressure,

[0023] t represents the ambient temperature.

[0024] The present invention has the following advantages: According to the altitude sensor technology, it can intelligently identify the altitude of the working environment of the oxygen generator, automatically adjust the parameter configuration of the oxygen generator to correspond to the current altitude, so that the oxygen generator can produce oxygen with a concentration meeting the standard requirements at each altitude. Brief Description of the Drawings

[0025] Figure 1 It is a three-dimensional structure schematic diagram of a preferred embodiment of the present invention;

[0026] Figure 2 It is a schematic flow chart of the control method of a preferred embodiment of the present invention.

[0027] Description of the reference numerals: 1. housing; 2. oil-free compressor; 3. electromagnetic switching valve; 4. double molecular sieve adsorption tower; 5. oxygen storage tank; 6. main control board; 7. control panel; 8. power switch. Detailed implementation manners

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] Embodiment 1

[0030] Please refer to Figure 1-2 , a pressure swing adsorption oxygen generator capable of intelligently adapting to altitude and its control method, comprising a housing 1, an oil-free compressor 2 is arranged inside the housing 1, the oil-free compressor 2 is connected to an electromagnetic switching valve 3 through a pipeline, the electromagnetic switching valve 3 is connected to a double molecular sieve adsorption tower 4 through a pipeline, the double molecular sieve adsorption tower 4 is connected to an oxygen storage tank 5 through a pipeline, an output port is arranged on one side of the oxygen storage tank 5, a main control board 6 is arranged inside the housing 1, a control panel 7 is arranged on the outer surface of the housing 1, a power switch 8 is arranged on the control panel 7, and a pressure sensor, an altitude sensor and a CPU processing center are arranged on the main control board 6.

[0031] A pressure regulating valve is arranged between the oxygen storage tank 5 and the output port; the altitude sensor is an absolute pressure type micro pressure sensor.

[0032] A control method for a pressure swing adsorption oxygen generator capable of intelligently adapting to altitude, the specific steps are as follows: T1. Start the power switch 8 through the control panel 7;

[0033] T2. The altitude sensor on the main control board 6 obtains the atmospheric pressure of the external environment, converts it into altitude through calculation, and transmits the altitude information to the CPU processing center; the calculation method is Q1 / Q2 = ε2 / ε1

[0034] Wherein: Q1 represents the exhaust volume in the plain area,

[0035] Q2 represents the exhaust volume in the high altitude area,

[0036] ε1 and ε2 respectively represent the compression ratios in the plain and high altitude areas;

[0037] T3. The CPU processing center calculates the required pressure value of the pressure in the double molecular sieve adsorption tower 4 at the current altitude according to the altitude information; the flow calculation formula under different pressures:

[0038] Wherein: Q represents the flow rate,

[0039] S represents the minimum cross-sectional area,

[0040] ΔP represents the pressure difference,

[0041] P2 represents gauge pressure,

[0042] t represents the ambient temperature;

[0043] T4. The CPU processing center controls the electromagnetic switching valve 3 according to the pressure value to change the pressure in the double molecular sieve adsorption tower 4;

[0044] T5. The double molecular sieve adsorption tower 4 transports oxygen to the oxygen storage tank 5 for caching;

[0045] T6. The oxygen in the oxygen storage tank 5 is compressed and transported to the outside after the concentration reaches the specified value.

[0046] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

[0047] The other parts not detailed in the present invention belong to the prior art, so they will not be elaborated here.

[0048] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intelligent pressure swing adsorption oxygen generator adaptable to altitude, comprising a housing (1), characterized in that, Inside the housing (1), there is an oil-free compressor (2). The oil-free compressor (2) is connected to an electromagnetic switching valve (3) through a pipeline. The electromagnetic switching valve (3) is connected to a double molecular sieve adsorption tower (4) through a pipeline. The double molecular sieve adsorption tower (4) is connected to an oxygen storage tank (5) through a pipeline. There is an output port on one side of the oxygen storage tank (5). Inside the housing (1), there is a main control board (6). On the outer surface of the housing (1), there is a control panel (7). On the control panel (7), there is a power switch (8). On the main control board (6), there are a pressure sensor, an altitude sensor, and a CPU processing center.

2. The pressure swing adsorption oxygen generator with intelligent altitude adaptation as claimed in claim 1, wherein, There is a pressure regulating valve between the oxygen storage tank (5) and the output port.

3. The pressure swing adsorption oxygen generator with intelligent altitude adaptation as claimed in claim 1, wherein The altitude sensor is an absolute pressure type micro pressure sensor.

4. An intelligent pressure swing adsorption oxygen generator adaptable to altitude and its control method. Using the intelligent pressure swing adsorption oxygen generator adaptable to altitude described in claim 1, the specific steps are as follows: T1. Start the power switch (8) through the control panel (7); T2. The altitude sensor on the main control board (6) obtains the atmospheric pressure of the external environment, converts it into altitude through calculation, and transmits the altitude information to the CPU processing center; T3. The CPU processing center calculates the pressure value that the pressure in the double molecular sieve adsorption tower (4) needs to reach at the current altitude according to the altitude information; T4. The CPU processing center controls the electromagnetic switching valve (3) according to the pressure value to change the pressure in the double molecular sieve adsorption tower (4); T5. The double molecular sieve adsorption tower (4) transports oxygen to the oxygen storage tank (5) for caching; T6. The oxygen in the oxygen storage tank (5) is compressed, and after the concentration reaches the specified value, it is transported to the outside.

5. The pressure swing adsorption oxygen generator capable of intelligently adapting to altitude and its control method according to claim 4, characterized in that, The calculation method of converting into altitude through calculation in step 2 is: Q1 / Q2 = ε2 / ε1 Where: Q1 represents the exhaust volume in the plain area, Q2 represents the exhaust volume in the high altitude area, ε1 and ε2 respectively represent the compression ratios in the plain and high altitude areas.

6. The pressure swing adsorption oxygen generator and its control method capable of intelligently adapting to altitude according to claim 4, characterized in that, The calculation method of the pressure value that the pressure in the double molecular sieve adsorption tower (4) needs to reach in step 3 is: Flow calculation formula under different pressures: Where: Q represents the flow rate, S represents the minimum cross-sectional area, ΔP represents the pressure difference, P2 represents the gauge pressure, t represents the ambient temperature.

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